Product Description

1. PRODUCT DESCRIPTION
The lifter is designed for semi-automatic operation. The entire system consists of slide-type pillar jib

crane, cylinder hoist device, vacuum gripping device, and pneumatic rotation device, to achieve

gripping, lifting, moving and placing materials to specific location by a serial of process setting, driven

by compressed air.

2. PRODUCT CHARATERISTICS

Code	FGV-VL-08-05
Size (mm)	1400mm (L) * 1000mm (W) * 1000mm (H)
Weight (kg)	135kg (not including hoist cylinder)
Driven System	Pneumatic Components Integration
Suction Cup	Round sucker; NBR material; oil & abrasion resistance; suction 250kgf; location adjustable; with buffer spring for height compensation
No. & Size of Cups	8 pads; 250mm diameter
Structure	L type; steel material; ergonomic design
Min. Glass Size	1000mm (L) x 1000mm (W)
Safety Loading Weight	500kg
Lifting Material	Glass, marble, plastic boards, metal sheets, coated boards and other plates.
Usage	Gripping, lifting and handling in the glass production and processing line, and glass packaging.
Installation Request	Hanged on the pillar jib crane or frame crane or bridge crane; compressor power supply
Packaging	Plywood Case
Delivery Time	Within 20 days after receiving the payments
Payment terms	L/C, T/T
MOQ	1 set
Supply ability	500 sets per month
Certificate	CE, SGS
Others	OEM / ODM accepted

3. PRODUCT TECHNIQUE

Safety Loading Weight	500kg
Factor of Safety	2.5
Standard Working Power	0.6~0.8 mpa
Noise Level	< 60 Db
Vacuum Holding time	More than 30 minutes after power loss
Gripping	Suction cups in vacuum state
Hoist Cylinder	100mm diameter; 1200mm distance; universal connection; 3 position 5 way valve make cylinder stay at any height with no drop, even if power loss
Rotation	Turn up to 90 degree driven by cylinder
Safety Protection	Vacuum non-return system and vacuum compensation system
Vacuum Compensation	when vacuum reaches to the specified pressure, it automatically closes the compressed air supply, to achieve energy saving; when vacuum pressure is insufficient, it automatically restore compressed air supply, to achieve vacuum compensation.
Control Method	Color-different buttons control on the same panel

4. SAFETY INSTRUCTION

Factor of safety	According to the European CE safety requirements for lifting equipment, and safety regulations on the German accident prevention regulations UVV 18 and VBG 9a, the best safety factor for vacuum lifter is 2.5. For example, each sucker 250mm dia., with suction CZPT to 250kgf, divided by the safety factor 2.5, can load 100kg. If the lifter uses 4 suction cups, the total suction is 100*4=400kg, greater than approved glass 250kg. When the glass is handled and transported vertically, it should be multiplied by the coefficient of friction 0.8 (between rubber and glass), 400kg*0.8=320kg, still greater than the approved glass 250kg.
Safety Protection Instruction	Once glass sucked, the system is under airtight state. The only entrance for air is backflow from vacuum generator to destroy system’s vacuum state. Therefore, the lifter is equipped with the safety non-return valve, for which air can only be extracted from inner system, with no return, and through which it can ensure sufficient vacuum to keep absorption time when power loss.
Vacuum Compensation Protection	Not worried about air leakage and insufficient vacuum, because the lifter is equipped with pressure sensor and vacuum compensation system. When vacuum is not enough, the system automatically senses and resumes operation to keep sufficient vacuum.

FAQ:

Q1: Are you a trading company or a manufactory?
A1: We are a manufactory, we supply the factory price with good quality, welcome to visit !

Q2: Why choosing CZPT ?
A2: Founder of the company  engaged in machinery manufacturing industry almost 20 years of experience, professional production and export of high-quality glass processing machinery,  industrial automation machinery, etc. , exported to all parts of the world, we have been committed to doing a good job of products, service every customer. 

Q3: Machine warranty specifications ?
A3: We will provide lifelong maintenance service in the use of machinery, we will solve
problems for customers free of charge, eliminate all the troubles of customers. For
machines beyond the warranty period, we will always provide follow-up services and
provide wearing parts for free, but we do not provide freight, local customs clearance fees
and related costs.

Q4: This is the first time I buy glass machine, is it easy to operate?
A4: We can provide the operation manual or video for guiding. If it is hard for you learning, We can help you by “Team viewer” online, with telephone or WhatsApp explain. And We will send our engineers to your factory to install the machines and train your staff how to operate the machines.

Q5: How to choose a suitable machine ?
A5: You can tell us working piece material, size, and the request of machine function. We can recommend the most suitable machine according to our experience.

Q6: How can I trust your company and your products ?
A6: The whole production procedure will be under regular inspection and strict quality
control. The complete machine will be tested to make sure they can work very well
before being out of factory. The testing video and pictures will be available before
delivery.

Q7: If machine have any problem after I ordered it, what could I do ?
A7: Free parts send to you in machine warranty period if machine have any problem. Free after-sales service life for machine, please feel free contact us if your machine have any problem. We will give you 24hours service from telphone and WhatsApp.

Q8: How about the spare parts?
A8: After we deal down all the things , we will offer you a spare parts list for your reference

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.