A plastic workpiece gate shearing device

Abstract

This utility model discloses a plastic workpiece gate shearing device, relating to the field of plastic workpiece processing. It includes a main body, a workpiece fixing and control mechanism, and a gate shearing mechanism. The gate shearing mechanism includes a support platform fixed inside the main body and a lifting platform mounted above the support platform. A lifting cylinder is installed at the bottom of the support platform, capable of pushing the lifting platform to move vertically. Multiple shearing stations are installed above the lifting platform, each equipped with multiple shearing components. This utility model has multiple shearing stations internally, and the workpiece fixing and control mechanism for fixing the plastic workpiece can move along the direction of the ball screw guide rail under the action of the guide rail. Therefore, when shearing the gate of a plastic workpiece, the corresponding shearing station can be selected according to the model of the plastic workpiece. This structural design makes the device applicable to different models of plastic workpieces, thus broadening its application range.

Description

Technical Field

[0001] This utility model relates to the field of plastic workpiece processing technology, and in particular to a plastic workpiece gate shearing device. Background Technology

[0002] In the manufacturing process of plastic products, the gate is a crucial channel through which molten plastic is injected into the mold. The design and treatment of the gate directly affect the appearance and performance of the plastic product. Traditionally, the gate needs to be removed by shearing equipment after molding to ensure the quality of the final product.

[0003] However, most existing shearing equipment is designed for specific models or specifications of plastic workpieces. This single-function equipment limits its flexibility on the production line, leading to frequent equipment changes or adjustments when dealing with various products. This increases equipment downtime and maintenance costs. In traditional shearing processes, when multiple gates exist, the equipment often has to shear them one by one. This step-by-step shearing method is not only time-consuming but also reduces overall efficiency due to the linear arrangement of the workflow. In batch production, especially large-scale production, product turnaround time is severely slowed down. Furthermore, due to improper equipment design or operation during the shearing process, incomplete shearing can easily occur. This not only affects the appearance of the plastic workpiece but may also lead to quality problems in subsequent use. For example, gate residue may affect the strength and integrity of the product. Fluctuations in shearing quality not only affect the yield rate of finished products but also increase subsequent rework and scrap rates, further increasing production costs.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a plastic workpiece gate shearing device. The device has multiple shearing stations, and the workpiece fixing control mechanism for fixing the plastic workpiece can move along the direction of the guide rail under the action of the ball screw guide rail. Therefore, when shearing the gate of the plastic workpiece, the corresponding shearing station can be selected according to the model of the plastic workpiece. This structural setting makes the device applicable to different models of plastic workpieces, and its application range is wider.

[0006] To achieve the above objectives, this utility model provides a plastic workpiece gate shearing device, including a device body, a workpiece fixing control mechanism, and a gate shearing mechanism. The workpiece fixing control mechanism is located inside the upper part of the device body and is used to fix the plastic workpiece to be sheared. The gate shearing mechanism is located inside the lower part of the device body and is used to shear the gate of the fixed plastic workpiece. The bottom of the workpiece fixing control mechanism is provided with a slide block and a driving slide. A guide rail that slides with the slide block is installed inside the upper part of the device body at the position of the slide block. A ball screw guide rail is installed inside the upper part of the device body at the position of the driving slide. The ball screw guide rail can control the horizontal movement of the workpiece fixing control mechanism along the direction of the guide rail.

[0007] The gate shearing mechanism includes a support platform fixed inside the main body of the equipment and a lifting platform disposed above the support platform. A lifting cylinder capable of pushing the lifting platform to move in the vertical direction is installed at the bottom of the support platform. Multiple shearing stations are installed above the lifting platform, and multiple shearing components are provided at each shearing station.

[0008] In one embodiment of this utility model, the workpiece fixing control mechanism includes a base plate, a workpiece carrier plate, a top plate, and a workpiece pressure plate. The base plate is slidably mounted on the upper part of the main body of the equipment via a sliding block and a driving slide. The workpiece carrier plate is fixed on the top of the base plate. Both the base plate and the workpiece carrier plate have shearing openings at their centers. The top plate is fixedly installed on the top of the base plate via a column. The workpiece pressure plate is disposed between the workpiece carrier plate and the top plate. A linear cylinder is installed on the top of the top plate. The piston rod of the linear cylinder passes through the top plate and connects to the top of the workpiece pressure plate. Based on this, when fixing a plastic workpiece using this device, the plastic workpiece is first fastened to the top of the workpiece carrier plate. At this time, the gates at the bottom of the plastic workpiece are all located within the shearing opening area. Then, the linear cylinder operates, driving the workpiece pressure plate to move downwards, cooperating with the workpiece carrier plate to press and fix the plastic workpiece.

[0009] In one embodiment of this utility model, two vertically arranged first guide rods are symmetrically installed between the workpiece carrier plate and the top plate. A guide sleeve adapted to the first guide rod is embedded in the workpiece pressure plate. The guide sleeve is slidably sleeved on the first guide rod. Based on this, when the workpiece pressure plate is raised and lowered under the action of the linear cylinder, the movement of the workpiece pressure plate is more stable through the limiting effect of the workpiece pressure plate and the guide sleeve.

[0010] In one embodiment of this utility model, multiple guide tubes are installed below the support platform, and a second guide rod is installed at the bottom of the lifting platform corresponding to the position of each guide tube. The second guide rod is slidably inserted into the guide tube. Based on this, when the lifting platform is lifted, the lifting platform is more stable due to the limiting effect of the second guide rod and the guide tube.

[0011] In one embodiment of this utility model, the shearing assembly includes a fixed U-frame, a second shear frame, and a first shear frame. The fixed U-frame is fixedly installed above the lifting platform via a base. The second shear frame has an inverted L-shaped structure at its lower end and a vertically upward extending portion above its horizontal end. A shearing control cylinder is installed on the lower outer side of the second shear frame. The first shear frame is disposed inside the fixed U-frame and located on the opposite side of the second shear frame. The inner side of the first shear frame has an inwardly extending portion.

[0012] In this design, both the first and second shear frames have shearing blades fixedly mounted on their tops via blade fixing plates. A pin is rotatably mounted on the inner side of the upper part of the fixed U-frame. The horizontal end of the second shear frame, located at the connection position of its upward extension, and the inner extension of the first shear frame are both rotatably sleeved on the pin, forming a "scissor structure" between the first and second shear frames. A push-pull connector is movably mounted on the bottom of the first shear frame. The piston rod of the shear control cylinder is movably connected to the push-pull connector. Based on this, when the shear control cylinder operates, it can increase or decrease the lower distance between the first and second shear frames. Through the lever principle, the upper distance between the first and second shear frames decreases or increases, thereby achieving the separation or clamping of the two shearing blades, i.e., achieving the shearing of the gate.

[0013] In one embodiment of this utility model, a receiving cylinder is provided above the support platform corresponding to each shearing component position, and a receiving guide groove is fixedly installed above the lifting platform corresponding to each shearing component position by a support rod. The receiving guide groove adopts an inclined structure, with one end of the receiving guide groove located below the two shearing blades of the corresponding shearing component and the other end located at the corresponding receiving cylinder position.

[0014] In one embodiment of the present invention, a collection box is provided at the lower interior of the main body of the device. The collection box is located at the bottom of the receiving guide groove. The upper inner side of the receiving cylinder has an opening, and the bottom of the receiving guide groove is slidably engaged in the opening.

[0015] Compared with the prior art, the plastic workpiece gate shearing device according to this utility model has multiple shearing stations inside. The workpiece fixing control mechanism for fixing the plastic workpiece can move along the direction of the guide rail under the action of the ball screw guide rail. Therefore, when shearing the gate of the plastic workpiece, the corresponding shearing station can be selected according to the model of the plastic workpiece. This structural setting makes the device applicable to different models of plastic workpieces, with a wider range of applications. Furthermore, through the structural design of the lifting platform and workpiece pressure plate in the device, it is more stable during operation, thereby ensuring the accuracy of the correspondence between the shearing components and the gate of the plastic workpiece during the shearing process, thus improving the shearing effect and the quality of shearing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a plastic workpiece gate shearing device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal upper structure of a plastic workpiece gate shearing device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of a plastic workpiece fixing control mechanism pressing a plastic workpiece in a plastic workpiece gate shearing device according to an embodiment of the present invention;

[0019] Figure 4 This is a bottom view of a workpiece fixing control mechanism in a plastic workpiece gate shearing device according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of a plastic workpiece gate shearing device according to an embodiment of the present invention when the workpiece fixing control mechanism releases the clamping of the plastic workpiece;

[0021] Figure 6 This is a schematic diagram of the internal lower structure of a plastic workpiece gate shearing device according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of a gate shearing mechanism in a plastic workpiece gate shearing device according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the overall structure of the shearing component in a plastic workpiece gate shearing device according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the shearing component in a plastic workpiece gate shearing device according to an embodiment of the present invention from another perspective.

[0025] Reference numerals: 1. Main body of equipment; 10. Guide rail; 11. Ball screw guide rail; 12. Collection box;

[0026] 2. Workpiece fixing control mechanism; 20. Base plate; 200. Slide block; 201. Drive slide; 202. Shearing port; 21. Workpiece carrier plate; 22. Top plate; 23. Column; 24. Linear cylinder; 25. Workpiece pressure plate; 26. First guide rod; 27. Guide sleeve;

[0027] 3. Gate shearing mechanism; 30. Support platform; 300. Receiving cylinder; 301. Support rod; 302. Receiving guide chute; 31. Lifting platform; 32. Shearing assembly; 320. Fixed U-frame; 321. First shear frame; 322. Second shear frame; 323. Shearing control cylinder; 324. Blade fixing plate; 325. Shearing blade; 326. Base; 327. Push-pull connector; 33. Lifting cylinder; 34. Second guide rod; 35. Guide tube;

[0028] 4. Plastic workpieces. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0030] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0031] like Figure 1 As shown, a preferred embodiment of the present invention provides a plastic workpiece gate shearing device, comprising a device body 1, a workpiece fixing control mechanism 2, and a gate shearing mechanism 3. The workpiece fixing control mechanism 2 is located inside the upper part of the device body 1 and is used to fix the plastic workpiece 4 to be sheared. The gate shearing mechanism 3 is located inside the lower part of the device body 1 and is used to shear the fixed plastic workpiece 4. The bottom of the workpiece fixing control mechanism 2 is provided with a slide 200 and a drive slide 201. A guide rail 10 that slides with the slide 200 is installed inside the upper part of the device body 1 at the position of the slide 200. A ball screw guide rail 11 is installed inside the upper part of the device body 1 at the position of the drive slide 201. The workpiece fixing control mechanism 2 can be controlled to move horizontally along the direction of the guide rail 10 through the ball screw guide rail 11.

[0032] The gate shearing mechanism 3 includes a support platform 30 fixed inside the main body 1 and a lifting platform 31 set above the support platform 30. The bottom of the support platform 30 is equipped with a lifting cylinder 33 that can push the lifting platform 31 to move in the vertical direction. Multiple shearing stations are installed above the lifting platform 31, and multiple shearing components 32 are set on each shearing station.

[0033] Working principle: When using this device, the plastic workpiece 4 to be cut is first fastened onto the workpiece fixing control mechanism 2 for fixation. After the plastic workpiece 4 is fixed, the device is started. At this time, the workpiece fixing control mechanism 2 moves to the corresponding cutting position inside the main body 1 under the action of the ball screw guide rail 11. When it moves to the corresponding cutting position, it stops. At this time, the lifting cylinder 33 runs, pushing the lifting platform 31 to move upward. The cutting component 32 moves synchronously to the gate at the bottom of the plastic workpiece 4, and the gate is cut in one go through the plastic workpiece 4.

[0034] In summary, the equipment has multiple shearing stations. The workpiece fixing control mechanism 2, used to fix the plastic workpiece 4, can move along the direction of the guide rail 10 under the action of the ball screw guide rail 11. Therefore, when shearing the gate of the plastic workpiece 4, the corresponding shearing station can be selected according to the model of the plastic workpiece 4. This structural setting makes the equipment applicable to different models of plastic workpiece 4, with a wider range of applications. It should be noted that the gate position is different for each model of plastic workpiece 4. In addition, it should be noted that the ball screw guide rail 11 is an existing mature equipment. Its principle is a linear track. The linear track is equipped with a screw and a screw nut that matches the screw. The screw nut is connected to the slide 200. One end of the linear track is equipped with a motor connected to the screw. Therefore, when the motor runs, it drives the screw to rotate. With the cooperation of the screw nut, the slide 200 moves, thereby realizing the station movement control of the plastic workpiece 4.

[0035] Specifically, such as Figures 1-5As shown, in order to fix the plastic workpiece 4, in this embodiment, the workpiece fixing control mechanism 2 includes a base plate 20, a workpiece carrier plate 21, a top plate 22, and a workpiece pressure plate 25. The base plate 20 is slidably mounted on the upper part of the equipment body 1 via a slide block 200 and a driving slide 201. The workpiece carrier plate 21 is fixed to the top of the base plate 20. Both the base plate 20 and the workpiece carrier plate 21 have shearing openings 202 at their centers. The top plate 22 is fixedly installed above the base plate 20 via a column 23. The workpiece pressure plate 25 is disposed on... Between the workpiece carrier plate 21 and the top plate 22, a linear cylinder 24 is installed on the top of the top plate 22. The piston rod of the linear cylinder 24 passes through the top plate 22 and connects to the top of the workpiece pressure plate 25. Based on this, when fixing the plastic workpiece 4 with this device, the plastic workpiece 4 is first fastened above the workpiece carrier plate 21. At this time, the gates at the bottom of the plastic workpiece 4 are all located in the area of ​​the shearing port 202. Then the linear cylinder 24 runs, driving the workpiece pressure plate 25 to move downward, and cooperates with the workpiece carrier plate 21 to press and fix the plastic workpiece 4.

[0036] Specifically, such as Figures 1-5 As shown, in order to make the workpiece pressure plate 25 more stable during lifting and lowering, in this embodiment, two vertically arranged first guide rods 26 are symmetrically installed between the workpiece carrier plate 21 and the top plate 22. The workpiece pressure plate 25 is fitted with a guide sleeve 27 that is adapted to the first guide rod 26. The guide sleeve 27 is slidably sleeved on the first guide rod 26. Based on this, when the workpiece pressure plate 25 is lifted and lowered under the action of the linear cylinder 24, the workpiece pressure plate 25 moves more stably through the limiting effect of the workpiece pressure plate 25 and the guide sleeve 27.

[0037] Specifically, such as Figures 6-9 As shown, in order to ensure that the lifting platform 31 is more stable during the lifting process, in this embodiment, multiple guide tubes 35 are installed under the support platform 30. A second guide rod 34 is installed at the bottom of the lifting platform 31 corresponding to the position of each guide tube 35. The second guide rod 34 is slidably inserted into the guide tube 35. Based on this, when the lifting platform 31 is lifted, the lifting of the lifting platform 31 is more stable due to the limiting effect of the second guide rod 34 and the guide tube 35.

[0038] Specifically, such as Figures 6-9 As shown, in order to cut the gate of the plastic workpiece 4, in this embodiment, the shearing assembly 32 includes a fixed U-frame 320, a second shear 322, and a first shear 321. The fixed U-frame 320 is fixedly installed above the lifting platform 31 via a base 326. The second shear 322 has an inverted L-shaped structure at its lower part and a vertically upward extending part above its horizontal end. A shearing control cylinder 323 is installed on the lower outer side of the second shear 322. The first shear 321 is located inside the fixed U-frame 320 and on the opposite side of the second shear 322. The inner side of the first shear 321 has an inwardly extending part.

[0039] In this design, the tops of both the first shear frame 321 and the second shear frame 322 are fixedly mounted with shearing blades 325 via blade fixing plates 324. A pin is rotatably mounted on the inner side of the upper part of the fixed U-frame 320. The horizontal end of the second shear frame 322, located at the connection position of the upward extension portion, and the inner extension portion of the first shear frame 321 are both rotatably sleeved on the pin, forming a "scissor structure" between the first shear frame 321 and the second shear frame 322. A push-pull connector 327 is movably mounted at the bottom of the first shear frame 321. The front end of the piston rod of the shear control cylinder 323 is movably connected to the push-pull connector 327. Based on this, when the shear control cylinder 323 is running, it can drive the lower distance between the first shear frame 321 and the second shear frame 322 to increase or decrease. Through the lever principle, the upper distance between the first shear frame 321 and the second shear frame 322 decreases or increases, thereby realizing the separation or clamping of the two shearing blades 325, that is, realizing the shearing of the gate.

[0040] Specifically, such as Figures 6-9 As shown, in order to facilitate the collection of the gate and avoid affecting the normal operation of the equipment, in this embodiment, a receiving cylinder 300 is provided above the support platform 30 corresponding to the position of each shearing component 32, and a receiving guide groove 302 is fixedly installed above the lifting platform 31 corresponding to the position of each shearing component 32 by a support rod 301. The receiving guide groove 302 adopts an inclined structure, with one end of the receiving guide groove 302 located below the two shearing blades 325 of the corresponding shearing component 32, and the other end located at the position of the corresponding receiving cylinder 300.

[0041] Specifically, such as Figures 6-9 As shown, in order to further facilitate the collection of the gate, in this embodiment, a collection box 12 is provided at the bottom of the inside of the main body 1 of the equipment. The collection box 12 is located at the bottom of the receiving guide 302. The receiving cylinder 300 has an opening on the upper inner side. The bottom of the receiving guide 302 is slidably engaged in the opening.

[0042] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A plastic workpiece gate shearing apparatus, characterized by, It includes: Equipment body (1); The workpiece fixing control mechanism (2) is located inside the upper part of the main body of the equipment (1) and is used to fix the plastic workpiece (4) to be cut. The gate shearing mechanism (3) is located inside the lower part of the main body of the equipment (1) and is used to shear the gate of the fixed plastic workpiece (4); The workpiece fixing control mechanism (2) is provided with a slide (200) and a drive slide (201) at its bottom. A guide rail (10) that slides and engages with the slide (200) is installed on the upper part of the equipment body (1) at the position of the slide (200). A ball screw guide rail (11) is installed on the upper part of the equipment body (1) at the position of the drive slide (201). The workpiece fixing control mechanism (2) can be controlled to move horizontally along the direction of the guide rail (10) by means of the ball screw guide rail (11). The gate shearing mechanism (3) includes a support platform (30) fixed inside the main body (1) of the equipment and a lifting platform (31) set above the support platform (30). The bottom of the support platform (30) is equipped with a lifting cylinder (33) that can push the lifting platform (31) to move in the vertical direction. Multiple shearing stations are installed above the lifting platform (31), and multiple shearing components (32) are set on each shearing station.

2. A plastic workpiece gate shearing apparatus according to claim 1, wherein The workpiece fixing control mechanism (2) includes: The base plate (20) is slidably mounted above the interior of the main body (1) via a slide (200) and a drive slide (201); The workpiece carrier plate (21) is fixed on the top of the base plate (20), and both the base plate (20) and the workpiece carrier plate (21) have shearing openings (202) at their centers. The top plate (22) is fixedly installed above the bottom plate (20) by a column (23); A workpiece pressure plate (25) is disposed between the workpiece carrier plate (21) and the top plate (22); A linear cylinder (24) is installed on the top of the top plate (22), and the piston rod of the linear cylinder (24) passes through the top plate (22) and is connected to the top of the workpiece pressure plate (25).

3. The plastic workpiece gate shearing device according to claim 2, characterized in that, Two vertically arranged first guide rods (26) are symmetrically installed between the workpiece carrier plate (21) and the top plate (22). The workpiece pressure plate (25) is fitted with a guide sleeve (27) adapted to the first guide rod (26), and the guide sleeve (27) is slidably sleeved on the first guide rod (26).

4. The plastic workpiece gate shearing device according to claim 1, characterized in that, Multiple conduits (35) are installed below the support platform (30). A second guide rod (34) is installed at the bottom of the lifting platform (31) corresponding to the position of each conduit (35). The second guide rod (34) slides into the conduit (35).

5. The plastic workpiece gate shearing device according to claim 1, characterized in that, The shearing component (32) includes: A fixed U-shaped frame (320) is fixedly installed above the lifting platform (31) via a base (326); The second shear frame (322) has an inverted L-shaped structure at its bottom. The horizontal end of the second shear frame (322) has a vertically upward extending part. A shear control cylinder (323) is installed on the lower outer side of the second shear frame (322). The first scissor (321) is disposed inside the fixed U-frame (320) and on the opposite side of the second scissor (322), and the inner side of the first scissor (321) has an inwardly extending portion; The top of both the first shear frame (321) and the second shear frame (322) is fixedly mounted with shearing blades (325) via blade fixing plates (324). A pin is rotatably mounted on the inner side of the upper part of the fixed U-frame (320). The horizontal end of the second shear frame (322) and the inner part of the first shear frame (321) are rotatably sleeved on the pin. A push-pull connector (327) is movably mounted on the bottom of the first shear frame (321). The front end of the piston rod of the shearing control cylinder (323) is movably connected to the push-pull connector (327).

6. The plastic workpiece gate shearing device according to claim 5, characterized in that, Above the support platform (30), a receiving cylinder (300) is provided corresponding to each shearing component (32). Above the lifting platform (31), a receiving guide groove (302) is fixedly installed on each shearing component (32) via a support rod (301). The receiving guide groove (302) adopts an inclined structure. One end of the receiving guide groove (302) is located below the two shearing blades (325) of the corresponding shearing component (32), and the other end is located at the corresponding receiving cylinder (300).

7. The plastic workpiece gate shearing device according to claim 6, characterized in that, A collection box (12) is provided at the bottom of the main body (1) of the device. The collection box (12) is located at the bottom of the receiving guide groove (302). The receiving cylinder (300) has an opening on the upper inner side. The bottom of the receiving guide groove (302) is slidably engaged in the opening.

Images