Automatic drawing gun special for die bench worker
By combining hydraulic cylinder groups, forward and reverse power motors, and a braking system, the problem of low efficiency in existing plastic mold fitting tools has been solved, realizing efficient and automated mold assembly and disassembly, reducing labor costs and accident risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-07
AI Technical Summary
Existing plastic mold fitting tools have low efficiency in removing the mold gun, and manual operation is time-consuming and laborious, which can easily lead to work accidents. They are also difficult to efficiently disassemble and assemble mold parts, especially rusted guide pillars.
By employing a hydraulic cylinder assembly, forward and reverse power motors, detachable screws, and a braking system, combined with a pneumatic motor and a return spring, automated mold assembly and disassembly can be achieved, improving assembly and disassembly efficiency and accuracy.
It significantly improves mold assembly and disassembly efficiency, reduces labor costs, lowers accident risks, and makes the gun-removing equipment more precise and efficient.
Smart Images

Figure CN224089440U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plastic mould fitter's tool, specifically to a special automatic gun pulling device for mould fitter. BACKGROUND
[0002] The existing plastic mould fitter's tool on the market generally has the problem of gun pulling, which is a craft weapon of 20 years ago, one screw rod and one handle, two components, simple combination, manual assembly and disassembly, which is relatively troublesome, when encountering mould components, the gun pulling device cannot take out the guide pillar, and it takes a long time to disassemble four guide pillars.
[0003] The existing mould gun pulling device has the following shortcomings:
[0004] 1) The traditional plastic mould fitter's tool gun pulling device uses manual screwing and unscrewing, which wastes a lot of time and affects work efficiency;
[0005] 2) The guide pillar on the mould encounters rusted old mould guide pillars, and the traditional gun pulling device is helpless because the mould guide pillar is rusted and stuck in the mould, and the arm strength is far from enough, which affects the mould maintenance time, the traditional gun pulling device has a M10 screw thread, the arm cannot exert force, the screw rod length is limited, the thread frequently slips, and the late maintenance is very inconvenient;
[0006] 3) The traditional gun pulling device has an unreasonable handle, the handle end and the screw rod intersect, and when pulling backward, the thumb is always hit, the probability of hand injury during mould fitter work is relatively high, and work accidents frequently occur;
[0007] 4) Overall, the existing plastic mould fitter's tool gun pulling device has low precision and low efficiency, and wastes a lot of time during use, which affects the work efficiency of the plastic mould fitter;
[0008] Therefore, in view of the above problems, the existing structure is improved, and a special automatic gun pulling device for mould fitter is provided. UTILITY MODEL CONTENTS
[0009] The utility model aims at providing a special automatic gun pulling device for mould fitter to solve the problem of low precision and low efficiency of manual screwing, which affects the work efficiency of the plastic mould fitter.
[0010] In order to achieve the above object, the utility model provides the following technical scheme: a special automatic gun of mould bench worker, including tool main part, the outer wall of tool main part is provided with first handle, one end of tool main part is provided with second handle, the outer wall of tool main part is provided with pneumatic motor, the output of pneumatic motor is fixedly connected with mounting screw hole, the inner wall of mounting screw hole is threadedly connected with connecting screw head, the outer wall of connecting screw head is fixedly connected with screw rod, the outer wall of screw rod is sleeved with spring that is attached to the surface of mounting screw hole, the outer wall of tool main part is provided with the oil cylinder main part of being located screw rod side, the outer wall of tool main part is provided with brake assembly.
[0011] Further, the outer wall of the second handle is provided with a motor control switch, the outer wall of the second handle is provided with an oil cylinder control switch, the outer wall of the second handle is provided with an oil way interface, the outer wall of the oil cylinder main body is provided with a gas way interface, and the outer wall of the gas way interface is provided with a solenoid valve.
[0012] Further, the brake assembly includes a brake block, the outer wall of the tool main body is rotatably connected with a lead screw, one end of the lead screw is fixedly connected with a knob, and the outer wall of the lead screw is threadedly connected with the brake block in sliding connection with the outer wall of the tool main body.
[0013] Further, the outer wall of the tool main body is provided with a bearing sleeved on the outer wall of the screw rod, and the oil cylinder main body is symmetrically arranged on both sides of the screw rod.
[0014] Further, the lead screw is provided with two groups, and the rotation directions of the two groups of lead screws are opposite.
[0015] Further, the brake block forms a sliding structure between the lead screw and the tool main body, a sliding groove is formed in the connecting part of the outer wall of the tool main body and the brake block, and the brake block and the lead screw are one-to-one correspondingly arranged.
[0016] Further, one end of the spring is fixedly connected between the bearing provided on the outer wall of the tool main body.
[0017] Compared with the prior art, the utility model has the beneficial effects that:
[0018] This invention significantly improves work efficiency and saves time in mold assembly and disassembly by incorporating a hydraulic cylinder assembly, a forward and reverse power motor, a detachable screw assembly, a braking system, and a return spring. It solves the problem of insufficient strength and breakage of cold-drawing guns used by plastic mold fitters in the past, which led to difficulty in pulling out the mold due to insufficient power. This invention saves mold assembly and disassembly time, improves work efficiency, and reduces labor costs. The existing automatic gun-pulling device for mold fitters is powerful, efficient, and fast, making the gun-pulling equipment for plastic mold fitters more precise and standardized. The rotating motor clockwise screws the screw into the mold guide post; after stopping, the hydraulic cylinder assembly is activated. The rod inside the hydraulic cylinder assembly presses against the mold plate, pulling it backward at a uniform speed, thus achieving rapid assembly and disassembly. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the main body of the tool of this utility model;
[0020] Figure 2 This is a three-dimensional structural diagram of the main body of the tool of this utility model from another direction;
[0021] Figure 3 This is a schematic diagram of the overall back structure of the tool body of this utility model;
[0022] Figure 4 This is a schematic diagram of the connection structure between the mounting screw hole and the connecting screw head of this utility model;
[0023] Figure 5 This is a schematic diagram of the screw position distribution structure of this utility model;
[0024] Figure 6 This utility model Figure 5 A magnified structural diagram at point A in the diagram.
[0025] In the picture:
[0026] 1. Tool body; 2. First handle; 3. Second handle; 4. Pneumatic motor; 5. Motor control switch; 6. Hydraulic cylinder control switch; 7. Hydraulic circuit interface; 8. Hydraulic cylinder body; 9. Pneumatic circuit interface; 10. Solenoid valve; 11. Screw; 12. Mounting screw hole; 13. Connecting screw head; 14. Spring; 15. Brake assembly; 1501. Lead screw; 1502. Knob; 1503. Brake block. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example
[0028] like Figures 1-6 As shown, an automatic gun puller for mold fitters includes a tool body 1, a first handle 2 on the outer wall of the tool body 1, a second handle 3 at one end of the tool body 1, a pneumatic motor 4 on the outer wall of the tool body 1, a mounting screw hole 12 fixedly connected to the output end of the pneumatic motor 4, a connecting screw head 13 threadedly connected to the inner wall of the mounting screw hole 12, a screw rod 11 fixedly connected to the outer wall of the connecting screw head 13, a spring 14 sleeved on the outer wall of the screw rod 11 and fitting against the surface of the mounting screw hole 12, a hydraulic cylinder body 8 located on one side of the screw rod 11 on the outer wall of the tool body 1, and a brake assembly 15 on the outer wall of the tool body 1.
[0029] like Figure 2 As shown, a motor control switch 5 is provided on the outer wall of the second handle 3, a cylinder control switch 6 is provided on the outer wall of the second handle 3, an oil circuit interface 7 is provided on the outer wall of the second handle 3, an air circuit interface 9 is provided on the outer wall of the cylinder body 8, and a solenoid valve 10 is provided on the outer wall of the air circuit interface 9. The solenoid valve 10 facilitates the automated operation of the tool.
[0030] like Figure 6 As shown, the brake assembly 15 includes a brake block 1503. A lead screw 1501 is rotatably connected to the outer wall of the tool body 1. A knob 1502 is fixedly connected to one end of the lead screw 1501. The brake block 1503 is threadedly connected to the outer wall of the lead screw 1501 and slidably connected to the outer wall of the tool body 1. The setting of the brake block 1503 is beneficial to enable the lead screw 11 to be self-locked and fixed in time when not in use.
[0031] like Figure 3 and Figure 4 As shown, the outer wall of the tool body 1 is provided with a bearing sleeved on the outer wall of the screw 11, and the cylinder body 8 is symmetrically arranged on both sides of the screw 11, which facilitates the quick lifting and disassembly of the mold by means of the symmetrical arrangement of the cylinder body 8 on both sides of the screw 11.
[0032] like Figure 6 As shown, there are two sets of lead screws 1501, and the two sets of lead screws 1501 rotate in opposite directions. This is beneficial to the two sets of brake blocks 1503 sliding relative to each other by setting two sets of lead screws 1501 rotating in opposite directions.
[0033] like Figure 6As shown, the brake block 1503 forms a sliding structure with the lead screw 1501 and the tool body 1. A groove is provided at the connection between the outer wall of the tool body 1 and the brake block 1503. The brake block 1503 and the lead screw 1501 are arranged in a one-to-one correspondence, which is conducive to the rotation of the lead screw 1501 and drives the brake block 1503 to slide along the outer wall of the tool body 1, thereby playing the role of quickly locking the screw 11.
[0034] like Figure 2 As shown, one end of the spring 14 is fixedly connected to the bearing provided on the outer wall of the tool body 1. This fixed connection between the spring 14 and the bearing provided on the outer wall of the tool body 1 helps to improve the stability of the connection between the screw 11 and the pneumatic motor 4.
[0035] Working Principle: When using this automatic mold-making tool puller, the hydraulic cylinder assembly, forward and reverse power motor, detachable screw 11 assembly, braking system, and spring 14 significantly improve work efficiency and save mold assembly and disassembly time. It solves the problems of insufficient strength and breakage of cold-drawing guns previously used by plastic mold fitters, which led to difficulty in pulling out the mold due to insufficient power. This saves mold assembly and disassembly time, improves work efficiency, and reduces labor costs. The existing automatic mold-making tool puller is powerful, efficient, and fast, making the tool puller equipment for plastic mold fitters more precise and standardized. The rotating motor clockwise screws the screw into the mold guide post. After stopping, the hydraulic cylinder assembly is activated. The rod inside the hydraulic cylinder assembly presses against the mold plate, pulling it backward at a uniform speed, thus achieving rapid assembly and disassembly.
[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. An automatic tool remover for mold fitters, comprising a tool body (1), characterized in that, The outer wall of the tool body (1) is provided with a first handle (2), one end of the tool body (1) is provided with a second handle (3), the outer wall of the tool body (1) is provided with a pneumatic motor (4), the output end of the pneumatic motor (4) is fixedly connected to a mounting screw hole (12), the inner wall of the mounting screw hole (12) is threadedly connected with a connecting screw head (13), the outer wall of the connecting screw head (13) is fixedly connected with a screw rod (11), the outer wall of the screw rod (11) is sleeved with a spring (14) that fits against the surface of the mounting screw hole (12), the outer wall of the tool body (1) is provided with a hydraulic cylinder body (8) located on one side of the screw rod (11), and the outer wall of the tool body (1) is provided with a brake assembly (15).
2. The automatic gun extractor for mold fitters according to claim 1, characterized in that, The outer wall of the second handle (3) is provided with a motor control switch (5), the outer wall of the second handle (3) is provided with a cylinder control switch (6), the outer wall of the second handle (3) is provided with an oil circuit interface (7), the outer wall of the cylinder body (8) is provided with an air circuit interface (9), and the outer wall of the air circuit interface (9) is provided with a solenoid valve (10).
3. The automatic gun extractor for mold fitters according to claim 1, characterized in that, The brake assembly (15) includes a brake block (1503), a lead screw (1501) is rotatably connected to the outer wall of the tool body (1), a knob (1502) is fixedly connected to one end of the lead screw (1501), and a brake block (1503) is threadedly connected to the outer wall of the lead screw (1501) and slidably connected to the outer wall of the tool body (1).
4. The automatic gun extractor for mold fitters according to claim 1, characterized in that, The outer wall of the tool body (1) is provided with a bearing sleeved on the outer wall of the screw (11), and the cylinder body (8) is symmetrically arranged on both sides of the screw (11).
5. The automatic gun extractor for mold fitters according to claim 3, characterized in that, The lead screw (1501) is provided in two sets, and the two sets of lead screws (1501) rotate in opposite directions.
6. The automatic gun extractor for mold fitters according to claim 3, characterized in that, The brake block (1503) forms a sliding structure with the tool body (1) through the lead screw (1501). The outer wall of the tool body (1) and the connection part of the brake block (1503) are provided with a sliding groove. The brake block (1503) and the lead screw (1501) are arranged in a one-to-one correspondence.
7. The automatic tool remover for mold fitters according to claim 1, characterized in that, One end of the spring (14) is fixedly connected to the bearing provided on the outer wall of the tool body (1).