Automatic stub bar cutting device

The automatic cutting device utilizes pneumatic drive and a screw chute structure to achieve automated cutting, solving the problem of low precision in manual cutting, improving cutting efficiency and adaptability, and reducing human fatigue.

CN224145273UActive Publication Date: 2026-04-21FONG CHEN PLASTIC TECH IND SUZHOU
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FONG CHEN PLASTIC TECH IND SUZHOU
Filing Date
2025-04-07
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

The current cutting of raw materials mainly relies on manual operation, which leads to hand fatigue after long hours of work, reduced cutting accuracy, low efficiency, and inability to meet the needs of products of different sizes.

Method used

An automatic material cutting device was designed, which uses a pneumatic device to drive the cutting head. Combined with a lead screw and slide structure, it can achieve precise adjustment of the cutting head and automated cutting. The air source is controlled by PLC to achieve efficient cutting and adapt to different product sizes.

Benefits of technology

It improves the accuracy and efficiency of material cutting, reduces operator fatigue, shortens equipment preparation time, and enhances product quality stability and production capacity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automatic stub bar cutting device which comprises a bottom plate and fixing holes formed in the four corners of the bottom plate, two L-shaped metal plates are arranged on the bottom plate, pneumatic devices are arranged on the L-shaped metal plates respectively, a cutting head is arranged on one sides of the pneumatic devices, a mounting plate is arranged on the outer side of the cutting head, and the mounting plate is connected with the L-shaped metal plates. A plurality of sliding grooves are formed in the bottom plate, two sliding blocks are arranged at the bottom of the L-shaped metal plate, moving blocks are arranged at the bottoms of the sliding blocks, a lead screw is arranged in the middle of the moving blocks, a connecting rod is arranged at one end of the lead screw, a rotary knob is arranged at one end of the connecting rod, and a clamping head is arranged at the other end of the connecting rod. According to the automatic stub bar cutting device, a traditional manual cutting mode is completely replaced, the stub bar cutting accuracy and the work efficiency are remarkably improved, meanwhile, the physical fatigue of workers is relieved, the quality stability is improved, manpower is saved, and the productivity is improved.
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Description

Technical Field

[0001] This utility model belongs to the technical field of material cutting equipment, specifically relating to an automatic material cutting device. Background Technology

[0002] Excess material refers to the excess material remaining on the product during industrial production, especially during material molding or processing, due to process requirements or mold structure limitations. This material is usually formed naturally during the product molding stage (such as injection molding, casting, stamping, extrusion, etc.), connected to the main body of the product but not the part needed for the final product. Handling excess material involves both material recycling, such as crushing and reusing plastic runner material, and precise cutting by manual or automated equipment to reduce waste and ensure product quality.

[0003] However, existing cutting materials are usually cut manually. After long hours of work, workers' hands become fatigued and painful, which leads to inaccurate cutting, resulting in incomplete cutting and reduced cutting efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an automatic material cutting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic material cutting device, including a base plate and fixing holes disposed at the four corners of the base plate;

[0006] The base plate has two L-shaped metal plates, each equipped with a pneumatic device. Each pneumatic device has a cutting head on one side, a mounting plate on the outside of the cutting head, and a connector on the other side. The base plate has multiple sliding grooves, and the bottom of each L-shaped metal plate has two sliders. Each slider has a moving block at its bottom, and a lead screw in the middle of the moving block. One end of the lead screw has a connecting rod, one end of which has a knob, and the other end has a locking connector. Support plates are located on both sides of the bottom of the base plate.

[0007] Preferably, the support plate is welded to the base plate, the connecting rod and the lead screw are integrally formed, and the connecting rod is rotatably connected to the support plate.

[0008] Preferably, the knob is welded to the connecting rod, the lead screw is welded to the clamp connector, the clamp connector is provided with a clamp groove, and the clamp connector is rotatably connected to the support plate on the other side.

[0009] Preferably, the lead screw is threadedly connected to the moving blocks, and the internal threads of the screw holes on the two moving blocks are opposite. Rotating the lead screw can cause the two moving blocks to move relative to each other or in opposite directions.

[0010] Preferably, the pneumatic device is fixedly installed to the L-shaped metal plate by screws, the slider is welded to the L-shaped metal plate, the slider can slide inside the groove, and the slider and the moving block are fixedly installed by screws.

[0011] Preferably, the connector can be connected to an external air source, and the pneumatic device can drive the cutting head to perform cutting actions through an air source controlled by an external PLC. The cutting head is rotatably connected to the mounting plate, and the mounting plate is fixedly installed with the pneumatic device.

[0012] Preferably, the base plate can be fixedly installed with other equipment through fixing holes, and the base plate can support the pneumatic device and the cutting head.

[0013] Compared with the prior art, this utility model provides an automatic material cutting device, which has the following features:

[0014] Beneficial effects:

[0015] 1. By configuring the mounting plate, pneumatic device, cutting head, and connector, operation is achieved simply by connecting the connector to an external air source. The PLC control system precisely controls the air supply, and the pneumatic device, driven by the air source, drives the cutting head to complete the cutting action. The cutting head can rotate flexibly on the mounting plate, achieving efficient cutting of product material ends. When the air source is released, the cutting head automatically resets to prepare for the next round of cutting. This design not only completely replaces the traditional manual cutting method but also effectively solves the problem of decreased accuracy due to fatigue in manual operation, significantly improving the accuracy and efficiency of material cutting, while reducing operator fatigue, improving quality stability, saving manpower, and increasing production capacity.

[0016] 2. Through the arrangement of lead screw, slide rail, support plate, moving block, knob, snap-fit ​​connector and slider, the lead screw, which is stably supported by the support plate, rotates under the drive of the knob. The moving block with reverse thread design drives the slider to slide smoothly along the slide rail, so that the two cutting heads can achieve precise relative displacement, thereby easily adjusting the cutting spacing. This mechanism eliminates the tedious process of repeatedly disassembling and assembling metal plates in the traditional way. It can quickly complete the adjustment according to products of different sizes, which not only greatly shortens the equipment preparation time, but also further improves the smoothness and adaptability of the overall cutting operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 For the present utility model Figure 1 Schematic diagram of a partial structure.

[0019] Figure 3 This is a schematic diagram of the bottom structure of the L-shaped metal plate of this utility model.

[0020] Figure 4 For the present utility model Figure 3 Schematic diagram of a partial structure.

[0021] In the diagram: 1. Mounting plate; 2. Cutting head; 3. Pneumatic device; 4. Connector; 5. Slide groove; 6. Knob; 7. Fixing hole; 8. Base plate; 9. L-shaped metal plate; 10. Connecting rod; 11. Support plate; 12. Moving block; 13. Sliding block; 14. Lead screw; 15. Slot; 16. Connector. Detailed Implementation

[0022] 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.

[0023] This utility model provides, for example Figure 1-4 An automatic material cutting device is shown, including a base plate 8 and fixing holes 7 at the four corners of the base plate 8;

[0024] Two L-shaped metal plates 9 are mounted on the base plate 8. Pneumatic devices 3 are mounted on each L-shaped metal plate 9. A cutting head 2 is located on one side of the pneumatic device 3. A mounting plate 1 is located on the outside of the cutting head 2. A connector 4 is located on the other side of the pneumatic device 3. Multiple sliding grooves 5 are provided on the base plate 8. Two sliders 13 are located at the bottom of the L-shaped metal plates 9. A moving block 12 is located at the bottom of the sliders 13. A lead screw 14 is located in the middle of the moving block 12. A connecting rod 10 is located at one end of the lead screw 14. A knob 6 is located at one end of the connecting rod 10. A snap-fit ​​connector 16 is located at the other end. Support plates 11 are provided on both sides of the bottom of the base plate 8.

[0025] In this embodiment, the automatic material cutting device is a device used to automatically identify and cut off excess material or waste remaining after product molding in the production process. When a product with a material head is transported to the automatic material cutting device, the pneumatic device 3 can be driven by the external PLC to use the cutting head 2 to cut off the excess material head. The automated equipment completes the replacement of manual cutting and improves the cutting efficiency of the material head. For complex products, it may be necessary to reprogram or adjust the cutting head 2 according to production needs to adapt to the processing of different types of material heads.

[0026] pass Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the support plate 11 is welded to the base plate 8, the connecting rod 10 and the lead screw 14 are integrally formed, the connecting rod 10 is rotatably connected to the support plate 11, the knob 6 is welded to the connecting rod 10, the lead screw 14 is welded to the snap-fit ​​connector 16, the snap-fit ​​connector 16 is provided with a snap-fit ​​groove 15, the snap-fit ​​connector 16 is rotatably connected to the support plate 11 on the other side, the lead screw 14 is threadedly connected to the moving block 12, the internal threads of the screw holes on the two moving blocks 12 are opposite, rotating the lead screw 14 can make the two moving blocks 12 move relative to each other or in opposite directions, and the pneumatic device 3 is connected by screws. The slider 13 is welded to the L-metal plate 9 and can slide inside the slide groove 5. The slider 13 and the moving block 12 are fixedly installed with screws. The connector 4 can be connected to an external air source. The pneumatic device 3 can drive the cutting head 2 to perform cutting action through the air source controlled by the external PLC. The cutting head 2 is rotatably connected to the mounting plate 1. The mounting plate 1 and the pneumatic device 3 are fixedly installed. The base plate 8 can be fixedly installed with other equipment through the fixing hole 7. The base plate 8 can support the pneumatic device 3 and the cutting head 2.

[0027] Preferably, with the mounting plate 1, pneumatic device 3, cutting head 2, and connector 4, the cutting device requires the connector 4 to be connected to an external air source before use. An external PLC can control the air source to intake and exhaust air. The pneumatic device can drive the cutting head 2 to cut through the air source. The cutting head 2 can rotate on the mounting plate 1 to cut products with material ends. After the air source is released, the cutting head 2 rotates and opens on the mounting plate 1, ready to cut the next product. This device can replace employees in manually cutting material ends, avoiding the decrease in cutting accuracy caused by long-term work by employees, and improving the accuracy and efficiency of material end cutting.

[0028] Preferably, through the arrangement of lead screw 14, slide groove 5, support plate 11, moving block 12, knob 6, snap-fit ​​connector 16 and slider 13, the support plate 11 can provide support for lead screw 14. Rotating knob 6 can drive lead screw 14 to rotate. Lead screw 14 is threadedly connected to moving block 12. Due to the reverse design of the threads on moving block 12, when lead screw 14 is rotated, slider 13 at the bottom of L metal plate 9 can slide inside slide groove 5, thereby driving the two cutting heads 2 to move relative to each other or in opposite directions. Finally, the cutting distance between the two cutting heads 2 is adjusted, so that the device can be adjusted according to the size of the product with material head, avoiding the need for disassembly and reassembly of L metal plate 9 and base plate 8, which is convenient and quick, and further improves the cutting efficiency of the equipment.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic material cutting device, comprising a base plate (8) and fixing holes (7) disposed at the four corners of the base plate (8); characterized in that Two L-shaped metal plates (9) are provided on the base plate (8). Pneumatic devices (3) are provided on the L-shaped metal plates (9). A cutting head (2) is provided on one side of the pneumatic device (3). An installation plate (1) is provided on the outside of the cutting head (2). A connector (4) is provided on the other side of the pneumatic device (3). Multiple sliding grooves (5) are provided on the base plate (8). Two sliders (13) are provided at the bottom of the L-shaped metal plates (9). A moving block (12) is provided at the bottom of the sliders (13). A lead screw (14) is provided in the middle of the moving block (12). A connecting rod (10) is provided at one end of the lead screw (14). A knob (6) is provided at one end of the connecting rod (10). A snap-fit ​​connector (16) is provided at the other end. Support plates (11) are provided on both sides of the bottom of the base plate (8).

2. The automatic tip cutting device according to claim 1, characterized in that: The support plate (11) is welded to the base plate (8), the connecting rod (10) and the lead screw (14) are integrally formed, and the connecting rod (10) is rotatably connected to the support plate (11).

3. An automatic tipping device according to claim 2, wherein: The knob (6) is welded to the connecting rod (10), the lead screw (14) is welded to the connector (16), the connector (16) is provided with a slot (15), and the connector (16) is rotatably connected to the support plate (11) on the other side.

4. An automatic tipping device according to claim 3, wherein: The lead screw (14) is threadedly connected to the moving block (12). The internal threads of the screw holes on the two moving blocks (12) are opposite. Rotating the lead screw (14) can make the two moving blocks (12) move relative to each other or in opposite directions.

5. An automatic tipping device according to claim 4, wherein: The pneumatic device (3) is fixedly installed to the L metal plate (9) by screws. The slider (13) is welded to the L metal plate (9). The slider (13) can slide inside the slide groove (5). The slider (13) and the moving block (12) are fixedly installed by screws.

6. An automatic tipping device according to claim 5, wherein: The connector (4) can be connected to an external air source. The pneumatic device (3) can drive the cutting head (2) to perform cutting actions through an air source controlled by an external PLC. The cutting head (2) is rotatably connected to the mounting plate (1), and the mounting plate (1) is fixedly installed with the pneumatic device (3).

7. The automatic tip cutting device of claim 1, wherein: The base plate (8) can be fixedly installed with other equipment through the fixing holes (7), and the base plate (8) can support the pneumatic device (3) and the cutting head (2).