Punching equipment for injection molded part

Abstract

The utility model discloses an injection molding part punching device which is characterized in that the injection molding part punching device comprises a machine table and two sets of punching mechanisms which are transversely arranged, a supporting plate is arranged at the top of the machine table, a supporting frame is installed on the machine table above the supporting plate, and the punching mechanisms are installed on the supporting frame; a product supporting part corresponding to the punching mechanism is arranged on the supporting plate, and a product supporting groove and a punching receding groove are formed in the top of the product supporting part. The punching mechanism comprises a pressing plate, a punching block, a mounting plate and a driving part, the driving part is fixedly mounted at the top of the supporting frame, the punching block and the pressing plate are mounted at the bottom of the mounting plate, and the mounting plate, the pressing plate and the punching block are arranged below the supporting frame; the driving end of the driving part penetrates through the supporting frame to be connected with the top of the mounting plate, the pressing plate is arranged over the product supporting part, and the punching block is arranged over against the punching receding groove. According to the utility model, the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model relates to the field of production and processing of injection molded parts, in particular to a punching device for injection molded parts. Background Art

[0002] Injection molded parts are a general term for various injection molded products produced by injection molding machines, including various packaging, parts, and so on. Due to the advantages of injection molding such as high production efficiency and easy production automation, injection molding technology is widely used in the production of various packaging components and parts. After injection molding, the injection molded product is connected to the sprue and runner molding, and the connection between the runner and the product needs to be separated. Different products have sprues set in different positions. For runners set on the side, cutting is relatively convenient and is generally done manually with a knife or scissors. However, for structures with a through groove in the middle of the product and the runners set in the through groove, especially structures with multiple runners, trimming is inconvenient and inefficient, and the labor intensity of the operator is relatively high. Therefore, how to improve trimming efficiency and reduce the labor intensity of the operator is a direction that those skilled in the art need to work on. Summary of the Invention

[0003] The utility model aims to provide an injection molded part punching device, which effectively improves the cleaning efficiency of the flow channel and the nozzle and reduces the labor intensity of the operator by using the structure.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an injection molded part punching device, comprising a machine platform and two sets of punching mechanisms arranged horizontally, a support plate is provided on the top of the machine platform, a support frame is installed on the machine platform above the support plate, and the punching mechanism is installed on the support frame;

[0005] The support plate is provided with a product support portion corresponding to the punching mechanism, and the top of the product support portion is provided with a product support groove and a punching clearance groove;

[0006] The punching mechanism includes a pressing plate, a punching block, a mounting plate and a driving part. The driving part is fixedly mounted on the top of the support frame, the punching block and the pressing plate are mounted on the bottom of the mounting plate, the mounting plate, the pressing plate and the punching block are arranged below the support frame, the driving end of the driving part passes through the support frame and is connected to the top of the mounting plate, the pressing plate is arranged directly above the product support part, and the punching block is arranged directly opposite the punching clearance groove.

[0007] In the above technical solution, the top of the punching block is fixedly mounted on the bottom surface of the mounting plate, and the pressing plate is vertically movably connected to the mounting plate via a connecting piece.

[0008] In the above technical solution, the connecting member includes a connecting plate and at least two first guide rods, the top of the pressure plate is fixedly connected to the bottom of the connecting plate, the bottoms of multiple first guide rods are fixedly connected to the top of the connecting plate, the mounting plate is provided with first through holes corresponding to the first guide rods one by one, the top of each first guide rod passes through the first through hole and is arranged directly above the mounting plate, and the top of each first guide rod is provided with a screw head;

[0009] A spring is sleeved on each of the first guide rods, and two ends of the spring respectively abut against the top surface of the connecting plate and the bottom surface of the mounting plate.

[0010] In the above technical solution, a guide sleeve is further provided on the mounting plate above each first through hole, the top of the first guide rod passes through the guide sleeve and is arranged above the guide sleeve, and the screw head is arranged above the guide sleeve;

[0011] When the spring is in an extended state, the screw head abuts against the top surface of the guide sleeve.

[0012] In the above technical solution, a product clearance cavity is provided on the bottom surface of the pressure plate, facing the product support groove, a first through groove connected to the bottom surface of the connecting plate is provided on the top of the connecting plate, and a second through groove connected to the top surface of the pressure plate is provided on the top of the product clearance cavity. The second through groove is arranged opposite to the first through groove, and the punching block is arranged opposite to the first through groove and the second through groove, and the bottom of the punching block can pass through the first through groove and the second through groove and be arranged below the bottom surface of the pressure plate.

[0013] In the above technical solution, when the spring is extended, the bottom surface of the punching block retracts into the second through slot; when the spring is compressed, the bottom of the punching block passes through the second through slot and is arranged below the bottom surface of the pressure plate.

[0014] In the above technical solution, a plurality of second guide rods are provided on the top of the mounting plate, the tops of the second guide rods pass through the support frame and are arranged above the top surface of the support frame, and the middle parts of the second guide rods are movably connected to the support frame.

[0015] In the above technical solution, the bottom of the punching clearance groove is connected to the bottom surface of the product support part, and the top of the support plate is provided with a blanking groove corresponding to the punching clearance groove, and the bottom of the blanking groove is connected to the bottom surface of the support plate.

[0016] In the above technical solution, a blanking chute is further provided on the machine platform below the support plate, and the blanking chute is arranged downwardly from left to right, and the blanking chute is arranged directly below the plurality of blanking chutes;

[0017] A material receiving box is also placed on the machine platform, and the material receiving box is arranged below the right end of the blanking chute.

[0018] In the above technical solution, the punching mechanism is divided into two groups, and two product support parts are provided on the support plate, and each product support part is arranged directly below a group of the punching mechanism.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] 1. In the present invention, the product support groove on the product support part is used to support and position the product, the pressing plate in the punching mechanism is used to press the product into the product support groove, the punching block is used to punch the product at the position where the punching is required, and the punching block is made to give way through the punching groove, so that the punching waste can be discharged from the punching groove, which can effectively improve the punching efficiency of the waste, ensure the accuracy and quality of the incision, ensure the punching effect of the product, and reduce the labor intensity of the operator;

[0021] 2. In this utility model, a spring is used to apply downward pressure to the pressing plate. The elastic force of the spring presses the product tightly into the product support groove, ensuring the stability of the product position during the punching process, and ensuring the punching effect and accuracy;

[0022] 3. The utility model also provides a guide sleeve to guide the movement of the guide rod, thereby reducing the thickness of the pressure plate, reducing the processing difficulty and processing cost. At the same time, a product clearance cavity is provided on the bottom surface of the pressure plate, so that the pressure plate can be suitable for the clamping and limiting of products of different shapes. Then, through the cooperation of the guide rod and the guide sleeve, it is ensured that the product clearance cavity is pressed on the top of the product when the pressure plate moves downward, ensuring the stability of the pressure plate pressing the product, ensuring the punching accuracy, and preventing damage to the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the first embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention (some mechanisms are not shown);

[0025] Figure 3 This is a structural diagram of the product support portion in Example 1 of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of the punching structure in Example 1 of the present utility model;

[0027] Figure 5 yes Figure 4 Exploded diagram.

[0028] Among them: 1. Machine; 2. Punching mechanism; 3. Support plate; 4. Support frame; 5. Product support part; 6. Product support groove; 7. Punching clearance groove; 8. Press plate; 9. Punching block; 10. Mounting plate; 11. Drive part; 12. Control switch; 13. Connector; 14. Connecting plate; 15. First guide rod; 16. First through hole; 17. Screw head; 18. Spring; 19. Guide sleeve; 20. Product clearance cavity; 21. First through groove; 22. Second through groove; 23. Second guide rod; 24. Blanking chute; 25. Material receiving box. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] Example 1: See Figure 1-5 As shown, an injection molded part punching device includes a machine platform 1 and two sets of punching mechanisms 2 arranged horizontally. A support plate 3 is provided on the top of the machine platform 1. A support frame 4 is installed on the machine platform 1 above the support plate 3. The punching mechanisms 2 are installed on the support frame 4.

[0031] The support plate 3 is provided with a product support portion 5 corresponding to the punching mechanism 2, and the top of the product support portion 5 is provided with a product support groove 6 and a punching clearance groove 7;

[0032] The punching mechanism 2 includes a pressing plate 8, a punching block 9, a mounting plate 10 and a driving part 11. The driving part 11 is fixedly mounted on the top of the support frame 4. The punching block 9 and the pressing plate 8 are mounted on the bottom of the mounting plate 10. The mounting plate 10, the pressing plate 8 and the punching block 9 are arranged below the support frame 4. The driving end of the driving part 11 passes through the support frame 4 and is connected to the top of the mounting plate 10. The pressing plate 8 is arranged directly above the product support part 5, and the punching block 9 is arranged directly opposite the punching clearance groove 7.

[0033] In this embodiment, the drive unit utilizes a pneumatic cylinder, and the punching mechanism comprises two groups, spaced laterally apart. The product support units also comprise two groups, spaced laterally apart, with each product support unit positioned directly below a group of punching mechanisms. A control switch 12 is provided at the front end of the machine to control the operation of the drive units of the two punching mechanisms. During use, the product is placed in the product support slot, the shape of which matches the lower portion of the product. The punching clearance slot is positioned directly below the punching block and directly below the position where the product needs to be punched. The punching clearance slot is provided on the bottom surface of the product support slot. The operator controls the extension and retraction of the output shaft of the driving part (the driving part can be an air cylinder or an oil cylinder, and the output shaft is the driving end) through the control switch. When the driving part drives the mounting plate to move downward, the pressure plate and the punching block will be driven downward through the mounting plate. The pressure plate will rest on the top of the product and press the product into the product support groove. The punching block will punch the part of the product that needs to be punched, and the punched waste will be punched into the punching clearance groove, thereby realizing the punching of the product waste.

[0034] See also Figure 4 、 5 As shown, the top of the punching block 9 is fixedly mounted on the bottom surface of the mounting plate 10 , and the pressing plate 8 is vertically movably connected to the mounting plate 10 via a connecting piece 13 .

[0035] The connecting member includes a connecting plate 14 and at least two first guide rods 15. The top of the pressure plate 8 is fixedly connected to the bottom of the connecting plate 14. The bottoms of multiple first guide rods 15 are fixedly connected to the top of the connecting plate 14. The mounting plate 10 is provided with first through holes 16 corresponding to the first guide rods 15. The top of each first guide rod 15 passes through the first through hole 16 and is arranged directly above the mounting plate 10. The top of each first guide rod 15 is provided with a screw head 17.

[0036] A spring 18 is sleeved on each of the first guide rods 15 , and two ends of the spring 18 respectively abut against the top surface of the connecting plate 14 and the bottom surface of the mounting plate 10 .

[0037] When the pressing plate is lifted up, the pressing plate is pushed upward to separate from the product, and the pressing plate is pulled away from the product by the spring.

[0038] In this embodiment, two sets of punching mechanisms are provided. Therefore, while one set of punching mechanisms is punching products, the operator removes the punched products from the product support slots of the other set of product support units and replaces the uncut products in the product support slots. The two sets of punching mechanisms and two sets of product support units allow one set of punching mechanisms to punch products while the other set is used to replace materials, thereby improving punching efficiency.

[0039] See also Figure 4 、 5 As shown, a guide sleeve 19 is further provided on the mounting plate 10 above each first through hole 16. The top of the first guide rod 15 passes through the guide sleeve 19 and is arranged above the guide sleeve 19. The screw head 17 is arranged above the guide sleeve 19.

[0040] When the spring 18 is extended, the screw head 17 abuts against the top surface of the guide sleeve 19 .

[0041] In this embodiment, the screw head limits the downward movement of the pressure plate. The provision of the guide sleeve can reduce the thickness of the pressure plate, reduce the material used for the pressure plate, and lower the cost of the pressure plate. Furthermore, the provision of the guide sleeve provides a longer guide for the vertical movement of the guide rod, preventing deformation of the guide rod, ensuring smooth movement of the guide rod, and also ensuring the stability of the vertical movement of the pressure plate. The guide rod is arranged parallel to the driving direction of the drive unit, that is, parallel to the axis of the cylinder output shaft.

[0042] See also Figure 5As shown, a product clearance cavity 20 is provided on the bottom surface of the pressing plate 8, facing the product support groove 6, and a first through groove 21 communicating with the bottom surface of the connecting plate 14 is provided on the top of the connecting plate 14. A second through groove 22 communicating with the top surface of the pressing plate 8 is provided on the top of the product clearance cavity 20, and the second through groove 22 is arranged opposite to the first through groove 21. The punching block 9 is arranged opposite to the first through groove 21 and the second through groove 22, and the bottom of the punching block 9 can pass through the first through groove 21 and the second through groove 22 and be arranged below the bottom surface of the pressing plate 8.

[0043] When the spring is in an extended state, the bottom surface of the punching block retracts into the second through slot; when the spring is in a compressed state, the bottom of the punching block passes through the second through slot and is disposed below the bottom surface of the pressing plate.

[0044] In this embodiment, a product clearance groove is provided on the bottom surface of the pressure plate. The product clearance groove can match the top shape of the product, so that the product is subjected to more uniform force. During the punching process, the periphery of the punching position can be protected to prevent deformation or damage to the product punching position, thereby ensuring the punching effect and qualified rate. The provision of the first through groove and the second through groove gives way to the punching block, and after the mounting plate is moved up, the punching block will not leak out when the spring is extended. A blade is provided at the bottom outer edge of the punching block for punching the product. Since the punching block will not leak out, the blade will not leak out either. In this way, when the operator changes the product, even if the operator accidentally touches the top of the pressure plate, the operator will not come into contact with the blade of the punching block, thereby preventing the operator from being scratched.

[0045] See also Figure 2 、 4 As shown in Figure 5, a plurality of second guide rods 23 are provided on the top of the mounting plate 10. The tops of the second guide rods 23 pass through the support frame 4 and are arranged above the top surface of the support frame 4, and the middle parts of the second guide rods 23 are movably connected to the support frame 4.

[0046] By setting up the second guide rod, the extension of the output shaft of the cylinder (driving part) can be guided and limited to prevent the radial force that may be generated during the punching process from causing radial deformation of the cylinder output shaft, thereby ensuring the service life and stability of the cylinder, reducing the maintenance rate and extending the service life.

[0047] At the same time, a second guide sleeve matching the second guide rod can be set on the top of the support frame, and the second guide rod and the second guide sleeve are slidably connected. This can also extend the moving guide distance of the second guide rod, ensure the stability of the movement, prevent radial deformation, and not increase the thickness of the mounting frame, thereby reducing costs.

[0048] See also Figure 3As shown, the bottom of the punching clearance groove 7 is connected to the bottom surface of the product support part, and the top of the support plate 3 is provided with a blanking groove corresponding to the punching clearance groove, and the bottom of the blanking groove is connected to the bottom surface of the support plate.

[0049] When the punching block moves down to punch the product where it needs to be punched, the plastic itself has a certain elastic deformation ability. In order to ensure that the product can be cut at the punching position, the punching block needs to move down a little below the punching position. Therefore, a punching clearance groove is set to give the punching block room to ensure the cutting effect. When the punching block moves down, the punched waste is flushed into the punching clearance groove and falls through the blanking groove, preventing the waste from affecting the placement of the product and subsequent punching.

[0050] See also Figure 2 As shown, a blanking chute 24 is further provided on the machine platform 1 below the support plate 3. The blanking chute 24 is arranged downwardly from left to right. The blanking chute 24 is arranged directly below the plurality of blanking chutes.

[0051] A material receiving box 25 is also placed on the machine platform 1 , and the material receiving box 25 is arranged below the right end of the blanking chute 24 .

[0052] In order to facilitate the collection of waste, the waste falls from the material chute into the inclined material chute through the setting of the material chute and the material receiving box, and then slides through the material chute and falls into the material receiving box, so that the operator only needs to clean the waste in the waste box regularly or replace the empty waste box.

Claims

1. An injection molded part punching device, characterized in that: It includes a machine platform and two sets of punching mechanisms arranged horizontally, wherein a support plate is provided on the top of the machine platform, a support frame is installed on the machine platform above the support plate, and the punching mechanism is installed on the support frame; The support plate is provided with a product support portion corresponding to the punching mechanism, and the top of the product support portion is provided with a product support groove and a punching clearance groove; The punching mechanism includes a pressing plate, a punching block, a mounting plate and a driving part. The driving part is fixedly mounted on the top of the support frame, the punching block and the pressing plate are mounted on the bottom of the mounting plate, the mounting plate, the pressing plate and the punching block are arranged below the support frame, the driving end of the driving part passes through the support frame and is connected to the top of the mounting plate, the pressing plate is arranged directly above the product support part, and the punching block is arranged directly opposite the punching clearance groove.

2. The injection molded part punching equipment according to claim 1, characterized in that: The top of the punching block is fixedly mounted on the bottom surface of the mounting plate, and the pressing plate is vertically movably connected to the mounting plate via a connecting piece.

3. The injection molded part punching equipment according to claim 2, characterized in that: The connecting member includes a connecting plate and at least two first guide rods, the top of the pressure plate is fixedly connected to the bottom of the connecting plate, the bottoms of multiple first guide rods are fixedly connected to the top of the connecting plate, the mounting plate is provided with first through holes corresponding to the first guide rods, the top of each first guide rod passes through the first through hole and is arranged directly above the mounting plate, and the top of each first guide rod is provided with a screw head; A spring is sleeved on each of the first guide rods, and two ends of the spring respectively abut against the top surface of the connecting plate and the bottom surface of the mounting plate.

4. The injection molded part punching equipment according to claim 3, characterized in that: A guide sleeve is further provided on the mounting plate above each of the first through holes, the top of the first guide rod passes through the guide sleeve and is arranged above the guide sleeve, and the screw head is arranged above the guide sleeve; When the spring is in an extended state, the screw head abuts against the top surface of the guide sleeve.

5. The injection molded part punching equipment according to claim 3, characterized in that: A product clearance cavity is provided on the bottom surface of the pressure plate, facing the product support groove; a first through groove connected to the bottom surface of the connecting plate is provided on the top of the connecting plate; a second through groove connected to the top surface of the pressure plate is provided on the top of the product clearance cavity; the second through groove is provided opposite to the first through groove; the punching block is provided opposite to the first through groove and the second through groove, and the bottom of the punching block can pass through the first through groove and the second through groove and be provided below the bottom surface of the pressure plate.

6. The injection molded part punching equipment according to claim 5, characterized in that: When the spring is in an extended state, the bottom surface of the punching block retracts into the second through slot; when the spring is in a compressed state, the bottom of the punching block passes through the second through slot and is disposed below the bottom surface of the pressing plate.

7. The injection molded part punching equipment according to claim 1, characterized in that: A plurality of second guide rods are provided on the top of the mounting plate, the tops of the second guide rods pass through the support frame and are arranged above the top surface of the support frame, and the middle portions of the second guide rods are movably connected to the support frame.

8. The injection molded part punching equipment according to claim 1, characterized in that: The bottom of the punching and making way groove is communicated with the bottom surface of the product support part, and the top of the support plate is provided with a blanking groove corresponding to the punching and making way groove, and the bottom of the blanking groove is communicated with the bottom surface of the support plate.

9. The injection molded part punching device according to claim 8, characterized in that: A blanking chute is also provided on the machine platform below the support plate, and the blanking chute is arranged downwardly from left to right, and the blanking chute is arranged directly below the plurality of blanking chutes; A material receiving box is also placed on the machine platform, and the material receiving box is arranged below the right end of the blanking chute.

10. The injection molded part punching equipment according to claim 1, characterized in that: There are two groups of punching mechanisms, and two product supporting parts are provided on the support plate. Each product supporting part is arranged directly below one group of punching mechanisms.

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