Double-station injection molding part water gap punching device

Abstract

The utility model relates to the technical field of injection molding part production, and discloses a double-station injection molding part water gap punching device. The double-station injection molding part water gap punching device comprises a working table and a punching mechanism erected on the working table, turntables are rotatably installed on the positions, on the left side and the right side of the punching mechanism, of the working table respectively, a plurality of jigs are arranged on the turntables, and lower cutting dies are installed on the jigs; the punching mechanism comprises an I-shaped bearing frame erected on the working table, a punching air cylinder is vertically and downwards arranged at the top of the bearing frame, an upper cutting die is arranged at the telescopic end of the punching air cylinder, and a cutter is arranged in the upper cutting die; the punching mechanism is of a double-station structure, and the edge of one side of the rotary disc extends to the position below the upper cutting die. On the one hand, an uninterrupted punching system is circularly formed under the structure, the punching efficiency of the double-station injection molding part water gap punching device is improved, on the other hand, water gap punching operation can be conducted on injection molding parts of two different specifications at the same time through the double-station structure, and the applicability of the double-station injection molding part water gap punching device is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding production technology, specifically a dual-station injection molding gate punching device. Background Technology

[0002] In the manufacturing process of plastic products, injection molding is typically used. During molding, excess molding material is generated at the gate (known in the industry as a sprue). To ensure product integrity and a good appearance, the remaining sprue needs to be removed after molding. Currently, traditionally, this is done by manually trimming the sprue after molding. However, manual trimming is inefficient, produces poor results, and is labor-intensive. Therefore, sprue cutting machines have been developed to improve upon this manual trimming method.

[0003] Currently, existing sprue punching machines perform sprue punching operations by placing the mold carrying the injection molded part on a station below the punching die. After punching, the entire mold carrying the injection molded part is removed manually or by an external robot and replaced with the mold carrying the injection molded part to be punched, and the punching operation is repeated. However, during the mold replacement period, the punching machine is in a standby state and cannot perform continuous punching operations, resulting in excessively slow punching efficiency.

[0004] Therefore, there is an urgent need for a dual-station injection molding part gate punching device to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a dual-station injection molding part gate punching device to solve the problem that the existing gate punching machine cannot perform continuous punching operations, resulting in slow punching efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model provides a dual-station injection molding part gate punching device, including a worktable and a punching mechanism mounted on the worktable. Turntables are rotatably mounted on the worktables on the left and right sides of the punching mechanism. Multiple fixtures are provided on the turntables, and lower cutting molds for holding the injection molding parts to be punched are mounted on the fixtures.

[0008] The punching mechanism includes an "I"-shaped support frame mounted on the workbench. A punching cylinder is vertically downward mounted on the top of the support frame. An upper cutting die is mounted on the telescopic end of the punching cylinder. A cutting blade is provided inside the upper cutting die.

[0009] The punching mechanism is a dual-station structure, with one edge of the turntable extending below the upper cutting die, and the punching cylinder driving the upper cutting die to perform up-and-down punching motion relative to the lower cutting die.

[0010] As an optional technical solution for a dual-station injection molding part gate punching device, the upper cutting die includes a drive plate installed on the telescopic end of the punching cylinder, a mounting plate is provided at the bottom of the drive plate, the cutter is vertically connected to the bottom surface of the mounting plate, a movable plate is provided at the bottom of the mounting plate that can move up and down, and the free end of the cutter can pass through the movable plate.

[0011] As an optional technical solution for a dual-station injection molding part gate punching device, the bottom surface of the mounting plate is provided with multiple hanging rods and a first guide rod. The movable plate is suspended by the hanging rods, and the free end of the first guide rod passes through the movable plate and extends below it. The lower cutting die is provided with multiple positioning holes that match the first guide rod. Springs are connected between the left and right sides of the mounting plate and the movable plate.

[0012] As an optional technical solution for a dual-station injection molding part gate punching device, the support frame includes two X-axis support plates installed on the worktable. The top of the X-axis support plate is connected to a base plate, and Z-axis support plates are respectively installed on both sides of the base plate. The top of the Z-axis support plate is connected to a top plate, and the punching cylinder is located on the top plate.

[0013] As an optional technical solution for a dual-station injection molding part gate punching device, two second guide rods are spaced apart on one side of the upper end face of the drive plate. The top ends of the second guide rods pass through the top plate and extend above it. A connecting rod is installed between the top ends of the two second guide rods.

[0014] As an optional technical solution for a dual-station injection molding part gate punching device, a third guide rod is connected between the top plate and the bottom plate, and the drive plate is slidably mounted on the third guide rod.

[0015] As an optional technical solution for a dual-station injection molding part gate punching device, the outer side of the Z-axis support plate is provided with multiple limit sensors, and the side of the drive plate is provided with a limit sensing plate that matches the limit sensors.

[0016] As an optional technical solution for a dual-station injection molding part gate punching device, two shoulder pieces are symmetrically installed on the top of the drive plate, and a "T"-shaped connector is engaged between the two shoulder pieces. The telescopic end of the punching cylinder is connected to the "T"-shaped connector.

[0017] As an optional technical solution for a dual-station injection molding part gate punching device, a rotary motor is installed on the worktable, and the turntable is horizontally mounted on the output end of the rotary motor.

[0018] As an optional technical solution for a dual-station injection molding part gate punching device, a vertically upward limiting cylinder is provided on the worktable below the turntable, and the telescopic end of the limiting cylinder is connected to a limiting rod. Multiple equally spaced limiting holes are provided on the outer edge of the turntable.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model provides a dual-station injection molding part gate punching device, which includes a worktable and a punching mechanism mounted on the worktable. Turntables are rotatably mounted on the worktables on both the left and right sides of the punching mechanism. Multiple fixtures are provided on the turntables, and lower cutting dies for holding the injection molded parts to be punched are mounted on the fixtures. The punching mechanism includes an "I"-shaped support frame mounted on the worktable. A punching cylinder is vertically mounted on the top of the support frame. An upper cutting die is mounted on the telescopic end of the punching cylinder. A cutting blade is provided inside the upper cutting die. The punching mechanism has a dual-station structure. One edge of the turntable extends to the bottom of the upper cutting die. The punching cylinder drives the upper cutting die to perform up and down punching motion relative to the lower cutting die.

[0021] In the above structure, the injection molded part with the sprue material to be punched is placed on the lower die by manual operation or an external robot. The rotary motor drives the turntable to rotate the lower die carrying the injection molded part to below the upper die. The punching cylinder drives the upper die and the cutter to move downwards. The cutter cuts the sprue material attached to the injection molded product. The punching cylinder then drives the upper die and the cutter to move upwards to reset. The rotary motor drives the turntable to rotate, and the downstream external robot grabs the punched injection molded part. This cycle forms a continuous punching system, which improves the punching efficiency of the dual-station injection molded part sprue punching device. On the other hand, the dual-station structure can simultaneously perform sprue punching operations on two different specifications of injection molded parts, increasing its applicability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the dual-station injection molding part gate punching device in this utility model embodiment;

[0023] Figure 2 This is a schematic diagram of the punching mechanism in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the upper cutting die in an embodiment of the present invention;

[0025] Figure 4 This is an exploded view of the upper cutting die in an embodiment of this utility model;

[0026] Figure 5 This is a top view of the lower cutting die in an embodiment of this utility model;

[0027] Figure 6 for Figure 1 Enlarged diagram of point A in the middle.

[0028] In the picture:

[0029] 1. Workbench;

[0030] 2. Punching mechanism; 20. Support frame; 201. X-axis support plate; 202. Base plate; 203. Z-axis support plate; 204. Top plate; 21. Punching cylinder; 22. Upper cutting die; 220. Drive plate; 221. Mounting plate; 222. Movable plate; 223. Hanging rod; 224. First guide rod; 225. Spring; 226. Shoulder piece; 227. "T" connector; 23. Cutting blade; 24. Second guide rod; 240. Connecting rod; 25. Third guide rod; 26. Limit sensor; 27. Limit sensing plate; 28. Guide through hole;

[0031] 3. Turntable; 30. Fixture; 31. Lower cutting mold; 310. Positioning hole; 311. Injection part; 32. Rotary motor; 33. Limit cylinder; 330. Limit rod; 331. Limit hole. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0037] like Figure 1-6 As shown, this utility model provides a dual-station injection molding part sprue punching device. The dual-station injection molding part sprue punching device includes a worktable 1 and a punching mechanism 2 mounted on the worktable 1. Turntables 3 are rotatably mounted on the worktables 1 on both the left and right sides of the punching mechanism 2. Multiple jigs 30 are provided on the turntables 3. A lower cutting die 31 for holding the injection molding part 311 to be punched is mounted on the jigs 30. The punching mechanism 2 includes an "I"-shaped support frame 20 mounted on the worktable 1. A punching cylinder 21 is vertically downward mounted on the top of the support frame 20. An upper cutting die 22 is mounted on the telescopic end of the punching cylinder 21. A cutter 23 is provided inside the upper cutting die 22. The punching mechanism 2 has a dual-station structure. One edge of the turntable 3 extends to the bottom of the upper cutting die 22. The punching cylinder 21 drives the upper cutting die 22 to perform up and down punching motion relative to the lower cutting die 31.

[0038] This utility model provides a dual-station injection molding part sprue punching device. The injection molding part 311 with sprue material to be punched is placed on the lower cutting die 31 by manual operation or an external robotic arm. A rotary motor 32 drives a turntable 3 to rotate, moving the lower cutting die 31 carrying the injection molding part 311 below the upper cutting die 22. A punching cylinder 21 drives the upper cutting die 22 and the cutter 23 downwards, cutting the sprue material attached to the injection molding product. The punching cylinder 21 then drives the upper cutting die 22 and the cutter 23 upwards to reset. The rotary motor 32 drives the turntable 3 to rotate, and the downstream external robotic arm picks up the punched injection molding part 311. This cycle forms a continuous punching system, improving the punching efficiency of the dual-station injection molding part sprue punching device. Furthermore, the dual-station structure allows for simultaneous sprue punching of two different specifications of injection molding parts 311, increasing its applicability.

[0039] Specifically, such as Figure 3-4 As shown, the upper cutting die 22 includes a drive plate 220 mounted on the telescopic end of the punching cylinder 21. The bottom of the drive plate 220 has two stacked mounting plates 221. A cutter 23 is vertically and downwardly fixedly connected to the bottom surface of the mounting plate 221. It should be noted that the number of cutters 23 and the spacing between them can be set according to the specifications and shape of the injection molded part 311 to be punched, so as to meet the requirements of punching sprue material for injection molded parts 311 of different specifications. On the other hand, four vertically downward first guide rods 224 are respectively installed at the four corners of the bottom surface of the mounting plate 221, and two vertically downward hanging rods 223 are respectively installed at the longer two side edges of the bottom surface of the mounting plate 221. That is, the installation position of the hanging rods 223 is located at the cutter 21. On the outside of 3, it can provide greater clearance for the cutter 23 when it moves downward; furthermore, two movable plates 222 are slidably mounted on the lifting rod 223, and the movable plates 222 are provided with clearance cavities that match the accommodating cavity of the lower cutting die 31; the free end of the cutter 23 can pass through the movable plates 222; the two movable plates 222 are passed through the free end of the lifting rod 223, and the diameter of the bottom end of the movable plates 222 is larger than the diameter of the rod body, so that the movable plates 222 are hoisted on the lifting rod 223, so that the movable plates 222 can move up and down on the lifting rod 223 without detaching from the lifting rod 223; guide holes 28 are provided at the four corners of the movable plates 222, and the free end of the first guide rod 224 passes through the guide holes 28 and extends to the bottom of the movable plates 222, such as Figure 5As shown, positioning holes 310 matching the first guide rods 224 are respectively provided at the four corners of the lower cutting die 31. When the punching cylinder 21 drives the upper cutting die 22 and the cutter 23 to move downward, the free ends of the four first guide rods 224 are first inserted into the four positioning holes 310 of the lower cutting die 31 to achieve precise mold closing positioning between the movable plate 222 and the lower cutting die 31, which improves the accuracy of the dual-station injection molding part sprue punching device when punching sprue material. Secondly, springs 225 are respectively connected on the left and right sides between the mounting plate 221 and the movable plate 222. Before the movable plate 222 and the lower cutting die 31 are closed, the spring force of the springs 225 acts as a spring force. A certain gap is maintained between the mounting plate 221 and the movable plate 222, so that the free end of the cutter 23 retracts into the movable plate 222. When the punching cylinder 21 drives the entire upper cutting mold 22 to punch the sprue material of the injection molded part 311 on the lower cutting mold 31, the movable plate 222 will first close with the lower cutting mold 31 so that the cavity on the movable plate 222 can press and position the sprue material on the injection molded part 311. The punching cylinder 21 continues to drive the mounting plate 221 to move downward, the spring 225 is compressed, and the cutter 23 passes through the movable plate 222 to cut the sprue material on the injection molded part 311, thereby completing the efficient positioning and punching operation of the sprue material.

[0040] In this embodiment, as Figure 2 As shown, the support frame 20 includes two X-axis support plates 201 mounted on the workbench 1. A base plate 202 is connected to the top of the X-axis support plate 201, and Z-axis support plates 203 are respectively mounted on both sides of the base plate 202. A top plate 204 is connected to the top of the Z-axis support plate 203. The punching cylinder 21 is vertically mounted downwards on the top plate 204. Furthermore, two second guide rods 24 are spaced apart on the outer upper surface of the drive plate 220. The top ends of the second guide rods 24 pass through the top plate 204 and extend above it. A connecting rod 240 is installed between the top ends of the two second guide rods 24. When the punching cylinder 21 drives the upper cutting die 22 to move downwards, the connecting rod 240 effectively prevents the second guide rods 24 from detaching from the top plate 204, thus improving the upper cutting die 22's stability. The stability of the up-and-down movement; furthermore, a third guide rod 25 is connected between the top plate 204 and the bottom plate 202, and the drive plate 220 is slidably mounted on the third guide rod 25; in the above structure, two second guide rods 24 are set above the drive plate 220 and the top plate 204, and two third guide rods 25 are set on the inner side of the upper cutting die 22 close to the support frame 20, so that the turntable 3 can extend to the lower part of the upper cutting die 22 to drive the lower cutting die 31 to rotate below the upper cutting die 22, thereby realizing that the multiple lower cutting dies 31 on the turntable 3 can continuously transfer the injection molded part 311 to the lower part of the upper cutting die 22 for sprue blanking operation, so that the dual-station injection molded part sprue blanking device can perform blanking operation without interruption and improve blanking efficiency.

[0041] Furthermore, the outer side of the Z-axis support plate 203 is provided with two upper and lower limit sensors 26, and the side of the drive plate 220 is provided with a limit sensing plate 27 that matches the limit sensors 26; through the cooperation of the limit sensors 26 and the limit sensing plate 27, the upper cutting die 22 can be precisely controlled to move up and down, thereby achieving precise punching of the sprue material.

[0042] Furthermore, such as Figure 3 and Figure 4 As shown, two shoulder pieces 226 are symmetrically installed on the top of the drive plate 220. A "T" shaped connector 227 is engaged between the two shoulder pieces 226. The telescopic end of the punching cylinder 21 is connected to the "T" shaped connector 227. When it is necessary to change to a different upper cutting die 22 for punching operations, the entire upper cutting die 22 can be removed from the "T" shaped connector 227 through the shoulder piece 226 for replacement, realizing the operation of quickly changing the upper cutting die 22.

[0043] In this embodiment, as Figure 1 and Figure 6 As shown, a rotary motor 32 is installed on the workbench 1, and a turntable 3 is horizontally mounted on the output end of the rotary motor 32. The rotary motor 32 drives the turntable 3 to rotate, thereby driving the lower cutting die 31 to cyclically move the injection molded part 311 to the lower part of the upper cutting die 22 for punching operation. Furthermore, a vertically upward limiting cylinder 33 is provided on the workbench 1 below the turntable 3. The telescopic end of the limiting cylinder 33 is connected to a limiting rod 330. Multiple equally spaced limiting holes 331 are provided on the outer edge of the turntable 3. After the turntable 3 moves the injection molded part 311 to be punched to the lower part of the upper cutting die 22, the limiting cylinder 33 drives the limiting rod 330 to move upward and pass through the limiting hole 331 to limit the entire turntable 3, preventing the turntable 3 from causing the lower cutting die 31 to shift position when the upper cutting die 22 punches the sprue material, thus further improving the punching accuracy of the sprue material.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A dual-station injection molding part sprue punching device, comprising a worktable and a punching mechanism mounted on the worktable, characterized in that, The punching mechanism has turntables rotatably mounted on the worktables on both the left and right sides. Each turntable is equipped with a plurality of fixtures, and each fixture is equipped with a lower cutting die for holding the injection molded part to be punched. The punching mechanism includes an "I"-shaped support frame mounted on the workbench. A punching cylinder is vertically downward mounted on the top of the support frame. An upper cutting die is mounted on the telescopic end of the punching cylinder. A cutting blade is provided inside the upper cutting die. The punching mechanism is a dual-station structure, with one edge of the turntable extending below the upper cutting die, and the punching cylinder driving the upper cutting die to perform up-and-down punching motion relative to the lower cutting die.

2. The dual-station injection molding part gate punching device according to claim 1, characterized in that, The upper cutting die includes a drive plate installed on the telescopic end of the punching cylinder. The bottom of the drive plate is provided with a mounting plate. The cutter is vertically connected to the bottom surface of the mounting plate. The bottom of the mounting plate is provided with a movable plate that can move up and down. The free end of the cutter can pass through the movable plate.

3. The dual-station injection molding part gate punching device according to claim 2, characterized in that, The bottom surface of the mounting plate is provided with multiple hanging rods and a first guide rod. The movable plate is suspended by the hanging rods. The free end of the first guide rod passes through the movable plate and extends below it. The lower cutting die is provided with multiple positioning holes that match the first guide rod. Springs are connected between the left and right sides of the mounting plate and the movable plate.

4. A dual-station injection molding part gate punching device according to claim 3, characterized in that, The support frame includes two X-axis support plates installed on the workbench. A base plate is connected to the top of the X-axis support plate, and Z-axis support plates are installed on both sides of the base plate. A top plate is connected to the top of the Z-axis support plate, and the punching cylinder is located on the top plate.

5. A dual-station injection molding part gate punching device according to claim 4, characterized in that, Two second guide rods are spaced apart on one side of the upper end face of the drive plate. The top end of the second guide rod passes through the top plate and extends above it. A connecting rod is installed between the top ends of the two second guide rods.

6. A dual-station injection molding part gate punching device according to claim 4, characterized in that, A third guide rod is connected between the top plate and the bottom plate, and the drive plate is slidably mounted on the third guide rod.

7. A dual-station injection molding part gate punching device according to claim 6, characterized in that, The outer side of the Z-axis support plate is provided with multiple limit sensors, and the side of the drive plate is provided with a limit sensing plate that matches the limit sensors.

8. A dual-station injection molding part gate punching device according to claim 7, characterized in that, Two shoulder pieces are symmetrically mounted on the top of the drive plate, and a "T"-shaped connector is engaged between the two shoulder pieces. The telescopic end of the punching cylinder is connected to the "T"-shaped connector.

9. A dual-station injection molding part gate punching device according to claim 8, characterized in that, A rotary motor is installed on the workbench, and the turntable is horizontally mounted at the output end of the rotary motor.

10. A dual-station injection molding part gate punching device according to claim 9, characterized in that, A vertically upward limiting cylinder is provided on the work platform below the turntable. The telescopic end of the limiting cylinder is connected to a limiting rod. Multiple equally spaced limiting holes are provided on the outer edge of the turntable.

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