Plastic part punching tool

Abstract

The utility model discloses a plastic part punching tool which comprises a positioning module, a punching module and a punching module. The punching module is adjacent to the positioning module, the punching module is opposite to the blind hole in the plastic part, and the punching module punches the blind hole; and the press-fit module is arranged over the positioning module, and the press-fit module presses down and fixes the plastic part. According to the multi-hole punching machine, multi-hole automatic punching can be achieved at a time, the punching efficiency is greatly improved, and broken material scraps are completely eradicated.

Description

Technical Field

[0001] This utility model relates to the field of punching technology, and in particular to a punching tool for plastic parts. Background Technology

[0002] In existing technologies, such as Figure 1 The square plastic part shown has screw holes at its four corners for connection and fixation. These screw holes are through holes. During injection molding, due to the flow characteristics of the molten plastic, when two or more streams of molten plastic meet within the hole, they may not completely fuse, forming a noticeable weld line at the meeting point. This weld line is usually located in the weakest area of ​​the hole, i.e., where the molten plastic flows converge. The presence of the weld line adversely affects the structural strength of the plastic part. Because the molten plastic at the weld line is not completely fused, the molecular chains in this area may not be tightly packed, leading to a decrease in mechanical properties such as strength and toughness. To solve this problem, the existing method is to design the screw holes as blind holes and then process the plastic at the blind holes. Traditional processing methods often use manual drilling, which has the following drawbacks: First, it is inefficient, as manual operation is time-consuming and labor-intensive, making it difficult to meet the needs of large-scale production; second, the debris generated during the process easily adheres to the product surface and is difficult to completely remove. This not only affects the appearance quality of the product but may also lead to customer complaints due to debris residue, causing unnecessary losses to the company. Summary of the Invention

[0003] According to an embodiment of the present invention, a punching fixture for plastic parts is provided, comprising:

[0004] The positioning module supports and positions the plastic parts.

[0005] The punching module is arranged adjacent to the positioning module. The punching module is opposite to the blind hole on the plastic part and punches out the blind hole.

[0006] The pressing module is located directly above the positioning module. The pressing module presses down to fix the plastic part.

[0007] Furthermore, the positioning module includes: a lifting cylinder, a positioning block, and a wedge mechanism;

[0008] The lifting cylinder is located at the bottom of the positioning block, and the wedge mechanism is located on the positioning block;

[0009] The output end of the lifting cylinder is connected to the wedge mechanism through the positioning block;

[0010] The positioning block and the wedge mechanism work together to support and position the plastic part;

[0011] The lifting cylinder moves vertically, causing the wedge mechanism to move horizontally outward to support the four corners of the plastic part.

[0012] Further, the wedge mechanism comprises a wedge block, four inclined sliding blocks and a folding assembly;

[0013] The bottom of the wedge block is gradually tapered to the top, the bottom of the wedge block is arranged in the positioning block, the top of the wedge block protrudes from the positioning block, and the bottom of the wedge block is connected with the output end of the jacking cylinder;

[0014] One end of the four inclined sliding blocks abuts against the wedge block, and the other end respectively extends to the four corners of the positioning block;

[0015] The sliding block pressing plate is arranged between the adjacent inclined sliding blocks, the sliding block pressing plate is fixed on the positioning block, and the inclined sliding blocks are covered and pressed;

[0016] The jacking cylinder drives the wedge block to vertically move upward, and drives the four inclined sliding blocks to move towards the four corners of the positioning block;

[0017] The folding assembly is arranged on the four inclined sliding blocks, and the folding assembly drives the inclined sliding blocks to move towards the wedge block.

[0018] Further, the folding assembly comprises a rubber ring and four folding columns;

[0019] The four folding columns are respectively fixed on the four inclined sliding blocks;

[0020] The rubber ring is tightly buckled on the four folding columns, and the rubber ring drives the four inclined sliding blocks to move towards the wedge block.

[0021] Further, a waste box is arranged around the positioning block, and the waste box receives the plastic waste after punching.

[0022] Further, the punching module comprises a punching mechanism and a cleaning mechanism;

[0023] The punching mechanism is arranged adjacent to the positioning module, the punching mechanism is opposite to the blind hole of the plastic part, and the punching mechanism punches the blind hole;

[0024] The cleaning mechanism is arranged adjacent to the punching mechanism, and the cleaning mechanism cleans the waste after the punching of the punching mechanism.

[0025] Further, the punching mechanism comprises a punching cylinder, a punch pipe connecting block, a punch pipe, a guide sleeve and a guide sleeve support;

[0026] The output end of the punching cylinder is connected with the punch pipe connecting block, the punch pipe is fixed on the punch pipe connecting block, and the punch pipe is opposite to the blind hole;

[0027] The guide sleeve is sleeved on the punch pipe to guide the punch pipe, and the guide sleeve support supports and fixes the guide sleeve;

[0028] The punching cylinder is extended to drive the punch pipe to punch the blind hole;

[0029] The cleaning mechanism is arranged in the punch pipe to clean the punching waste remaining on the punch pipe.

[0030] Further, the cleaning mechanism comprises a cleaning cylinder, a ejector pin and a ejector pin connecting block;

[0031] The cleaning cylinder is arranged on the punching cylinder, and an output end of the cleaning cylinder is connected with the ejector pin connecting block;

[0032] The ejector pin connecting block fixes the ejector pin, and the ejector pin extends into the punch pipe;

[0033] The cleaning cylinder extends out to drive the ejector pin to penetrate the punch pipe, so as to clean the residual punching waste on the punch pipe.

[0034] Further, the pressing module comprises a mounting frame, a pressing cylinder, a pressing plate and four pressing blocks;

[0035] The mounting frame is arranged above the positioning module, and the mounting frame fixes the pressing cylinder;

[0036] An output end of the pressing cylinder is connected with the pressing plate;

[0037] The four pressing blocks are respectively fixed at four corners of the pressing plate;

[0038] The pressing cylinder extends out to drive the pressing plate and the four pressing blocks to press down, so as to cover and fix the corners of the plastic part.

[0039] Further, the pressing module further comprises a guide rod and a linear bearing;

[0040] The guide rod penetrates through the mounting frame and is connected with the pressing plate, and the guide rod guides the moving direction of the pressing plate;

[0041] The linear bearing is installed on the mounting frame and is sleeved on the guide rod.

[0042] The plastic part punching tool according to the embodiment of the utility model can realize automatic punching of multiple holes at one time, greatly improves the hole opening efficiency, and eliminates the generation of broken pieces.

[0043] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the subject technology claimed. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 It is a schematic view of a plastic part according to the plastic part punching tool of the embodiment of the utility model;

[0045] Figure 2 It is a structural schematic view of the plastic part punching tool according to the embodiment of the utility model;

[0046] Figure 3 It is a structural schematic view of the positioning module of the plastic part punching tool according to the embodiment of the utility model;

[0047] Figure 4It is a sectional view schematic diagram of the positioning module of the plastic part punching tooling according to the embodiment of the utility model;

[0048] Figure 5 It is a structural schematic diagram of the punching module of the plastic part punching tooling according to the embodiment of the utility model;

[0049] Figure 6 It is a structural schematic diagram of the pressing module of the plastic part punching tooling according to the embodiment of the utility model. DETAILED DESCRIPTION

[0050] The preferred embodiment of the utility model will be described in detail below with the accompanying drawings, and the utility model will be further described.

[0051] Firstly, the plastic part punching tooling according to the embodiment of the utility model will be described in combination with Figures 1-6 The plastic part punching tooling according to the embodiment of the utility model is used for opening the blind hole of the plastic part, and the application scenario is very wide.

[0052] As Figures 1-6 Indicated, the plastic part punching tooling according to the embodiment of the utility model comprises: a positioning module 1, a punching module 2 and a pressing module 3, and the positioning module 1, the punching module 2 and the pressing module 3 are all fixedly installed in a case 4.

[0053] Specifically, as Figures 1-6 Indicated, in the embodiment, the positioning module 1 supports and positions the plastic part 5; the punching module 2 is arranged adjacent to the positioning module 1, the punching module 2 is opposite to the blind hole 51 on the plastic part 5, and the punching module 2 punches the blind hole 51; the pressing module 3 is arranged directly above the positioning module 1, and the pressing module 3 presses and fixes the plastic part 5. Through the cooperation of the positioning module 1 and the pressing module 3, the plastic part 5 can be stably and comprehensively fixed, so that the plastic part 5 is prevented from moving and deforming in the punching process. Through the punching module 2, automatic punching can be realized, which replaces manual drilling to open the hole, improves the opening efficiency and the operation safety.

[0054] Further, as Figures 1-6 Indicated, in the embodiment, the positioning module 1 comprises: a jacking air cylinder 11, a positioning block 12 and a wedge mechanism; the jacking air cylinder 11 is arranged at the bottom of the positioning block 12, and the wedge mechanism is arranged on the positioning block 12; the output end of the jacking air cylinder 11 penetrates through the positioning block 12 and is connected with the wedge mechanism; the positioning block 12 and the wedge mechanism jointly support and position the plastic part 5; the jacking air cylinder 11 moves vertically to drive the wedge mechanism to move outward horizontally, and converts the vertical movement into the movement in the horizontal direction through the wedge mechanism to support the four corners of the plastic part 5, so that the stable support of the opening position of the plastic part 5 is realized. The cooperation of the wedge mechanism and the positioning block 12 can realize the rapid positioning and fixing of the plastic part 5, can shorten the processing time and improve the production efficiency.

[0055] Further, asFigures 1-6 As shown, in this embodiment, the wedge mechanism includes: a wedge block 13, four inclined sliders 14, and a retracting assembly; the wedge block 13 gradually contracts from bottom to top, so that when the wedge block 13 is driven by the lifting cylinder 11, it can more effectively transmit the force to the inclined sliders 14, thereby ensuring that the inclined sliders 14 can move accurately and stably to the predetermined position. The bottom of the wedge block 13 is set inside the positioning block 12, the top of the wedge block 13 extends out of the positioning block 12, and the bottom of the wedge block 13 is connected to the output end of the lifting cylinder 11; one end of the four inclined sliders 14 abuts against the wedge block 13, and the other end extends to the four corners of the positioning block 12, so that the inclined sliders 14 can move evenly. The four corners of the plastic part 5 are supported and fixed to prevent them from moving or tilting during processing. A slider pressure plate 15 is provided between adjacent inclined sliders 14. The slider pressure plate 15 is fixed on the positioning block 12 and presses down on the inclined sliders 14, enhancing the stability of the inclined sliders 14. The lifting cylinder 11 drives the wedge block 13 to move vertically upward, causing the four inclined sliders 14 to open outward and move toward the four corners of the positioning block 12, thereby supporting the plastic part 5. The retracting component is set on the four inclined sliders 14. The retracting component drives the inclined sliders 14 to retract inward and move toward the wedge block 13, realizing the automatic reset of the inclined sliders 14, which facilitates the removal of the plastic part 5 after punching.

[0056] Furthermore, such as Figures 1-6 As shown, in this embodiment, the retracting assembly includes: a rubber ring 16 and four retracting posts 17; the four retracting posts 17 are respectively fixed on four inclined sliders 14; the rubber ring 16 is tightly clamped to the four retracting posts 17, and the rubber ring 16 drives the four inclined sliders 14 to move toward the wedge block 13. The retracting posts 17 can be bolts, which are inexpensive and easy to use. The rubber ring 16 is elastic, which can drive the inclined sliders 14 to automatically retract and reset, and is easy to disassemble and replace, making it convenient to use.

[0057] Furthermore, such as Figures 1-6 As shown, in this embodiment, a waste box 18 is provided around the positioning block 12. The waste box 18 receives plastic waste after punching, realizing centralized collection of waste, avoiding waste from being scattered on the workbench or the ground, thereby maintaining the cleanliness of the working environment and reducing safety hazards.

[0058] Furthermore, such as Figures 1-6 As shown, in this embodiment, the punching module 2 includes a punching mechanism and a cleaning mechanism. The punching mechanism is arranged adjacent to the positioning module 1, and is opposite to the blind hole 51 of the plastic part 5, performing rapid and automated punching on the blind hole 51. The cleaning mechanism is arranged adjacent to the punching mechanism, and promptly cleans up the waste material after punching by the punching mechanism, automating the cleaning process and reducing the workload of manual waste cleaning by operators. The number of punching mechanisms and cleaning mechanisms can be adaptively set according to the opening requirements.

[0059] Further, as shown in Figures 1-6 In this embodiment, the punching mechanism includes a punching cylinder 21, a punch pipe connecting block 22, a punch pipe 23, a guide sleeve 24, and a guide sleeve support 25. The output end of the punching cylinder 21 is connected to the punch pipe connecting block 22, and the response is fast and the driving is stable. The punch pipe 23 is fixed on the punch pipe connecting block 22, and the punch pipe 23 is opposite to the blind hole 51. The guide sleeve 24 is sleeved on the punch pipe 23 to provide accurate guidance for the punch pipe 23, ensure that the punch pipe 23 can move along the predetermined trajectory during the punching process, and the guide sleeve support 25 supports and fixes the guide sleeve 24, further enhances the stability of the guidance, and ensures the accuracy of the punching position. The punching cylinder 21 extends to drive the punch pipe 23 to punch the blind hole 51. The cleaning mechanism is arranged in the punch pipe 23 to clean the residual punching waste on the punch pipe 23. The structure is simple and convenient to maintain.

[0060] Further, as shown in Figures 1-6 In this embodiment, the cleaning mechanism includes a cleaning cylinder 26, a ejector pin 27, and a ejector pin connecting block 28. The cleaning cylinder 26 is arranged on the punching cylinder 21, and the output end of the cleaning cylinder 26 is connected to the ejector pin connecting block 28. The ejector pin connecting block 28 fixes the ejector pin 27, and the ejector pin 27 extends into the punch pipe 23. The cleaning cylinder 26 extends to drive the ejector pin 27 to penetrate the punch pipe 23 to knock off the residual punching waste on the punch pipe 23. The automatic cleaning mode greatly improves the cleaning efficiency and reduces the tediousness and time-consuming of manual cleaning.

[0061] Further, as shown in Figures 1-6 In this embodiment, the pressing module 3 includes a mounting frame 31, a pressing cylinder 32, a pressing plate 33, and four pressing blocks 34. The mounting frame 31 is arranged above the positioning module 1, and the mounting frame 31 fixes the pressing cylinder 32 to ensure the accurate position of the components such as the pressing cylinder 32, the pressing plate 33, and the pressing blocks 34 during the pressing process. By accurately controlling the extension length of the pressing cylinder 32 and the pressing depth of the pressing plate 33, the accurate pressing and fixing of the corner of the plastic part 5 can be realized. The output end of the pressing cylinder 32 is connected to the pressing plate 33. The four pressing blocks 34 are respectively fixed at the four corners of the pressing plate 33. The pressing cylinder 32 extends to drive the pressing plate 33 and the four pressing blocks 34 to press down and cover the corner of the plastic part 5. The pressing blocks 34 are made of optimal glue profiling to ensure that the corner of the plastic part 5 is pressed tightly and not damaged. The overall adaptability is strong, the pressing is stable, and the automation reduces manual intervention.

[0062] Further, as shown in Figures 1-6As shown, in the embodiment, the pressing module 3 further comprises: a guide rod 35 and a linear bearing 36; the guide rod 35 penetrates through the mounting frame 31 and is connected with the pressing plate 33, the guide rod 35 guides the moving direction of the pressing plate 33, ensures the stability and accuracy of the pressing plate 33 during the pressing process, and avoids poor pressing or equipment damage caused by deviation of the moving direction; the linear bearing 36 is installed on the mounting frame 31 and is sleeved on the guide rod 35, which provides good support and guiding effect for the guide rod 35, reduces friction and wear, and enhances the carrying capacity. The number of the guide rod 35 and the linear bearing 36 can be adaptively set to be multiple.

[0063] In the embodiment, the jacking cylinder 11 and the punching cylinder 21 can adopt double-rod cylinders, and the cleaning cylinder 26 can adopt a pen-shaped cylinder.

[0064] Working principle: when in use, the plastic part 5 is sleeved on the sliding block pressing plate 15 on the positioning block 12, the jacking cylinder 11 jacks up the wedge block 13, drives the inclined sliding block 14 connected with the wedge block 13 to be stretched out and move towards the four corners of the plastic part 5, so as to support the plastic part 5 at the blind hole 51 and ensure stability during punching; the pressing cylinder 32 drives the pressing plate 33 and the pressing block 34 to move downward and cover the four corners of the plastic part 5; the punching cylinder 21 extends, drives the punch pipe 23 to move towards the blind hole 51, and drives the punch pipe 23 to punch the plastic part 5; the cleaning cylinder 26 extends, drives the ejector pin 27 to push the waste on the punch pipe 23 out and fall into the waste box 18; all actions are reset, and the completed punched plastic part 5 is taken away.

[0065] The above, with reference to Figures 1-6 The plastic part punching tool according to the embodiment of the utility model can realize automatic punching of multiple holes at one time, greatly improves the hole opening efficiency, and eliminates the generation of broken materials.

[0066] It should be noted that in the present specification, the terms "comprising", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment. Without more limitations, the elements defined by the statement "containing" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0067] Although the content of the utility model has been described in detail by the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be defined by the appended claims.

Claims

1. A plastic part punching tool, characterized in that, Comprising: a positioning module for supporting and positioning the plastic part; a punching module adjacent to the positioning module, the punching module opposite to the blind hole on the plastic part, the punching module punching the blind hole; a pressing module arranged above the positioning module, the pressing module pressing the plastic part; the positioning module comprising a lifting cylinder, a positioning block and a wedge mechanism; the lifting cylinder arranged at the bottom of the positioning block, the wedge mechanism arranged on the positioning block; the output end of the lifting cylinder penetrating through the positioning block and connected with the wedge mechanism; the positioning block and the wedge mechanism jointly supporting and positioning the plastic part; the lifting cylinder moving vertically, driving the wedge mechanism to move horizontally outward to support the four corners of the plastic part.

2. The plastic part punching tooling of claim 1, wherein, the wedge mechanism comprising a wedge block, four inclined sliding blocks and a folding assembly; the wedge block gradually shrinking from the bottom to the top, the bottom of the wedge block arranged in the positioning block, the top of the wedge block protruding from the positioning block, the bottom of the wedge block connected with the output end of the lifting cylinder; one end of the four inclined sliding blocks abutting against the wedge block, the other end respectively extending to the four corners of the positioning block; the adjacent inclined sliding blocks provided with a sliding block pressing plate, the sliding block pressing plate fixed on the positioning block and covering the inclined sliding blocks; the lifting cylinder driving the wedge block to move vertically upward, driving the four inclined sliding blocks to move towards the four corners of the positioning block; the folding assembly arranged on the four inclined sliding blocks, the folding assembly driving the inclined sliding blocks to move towards the wedge block.

3. The plastic part punching tooling of claim 2, wherein: the folding assembly comprising a rubber ring and four folding columns; the four folding columns respectively fixed on the four inclined sliding blocks; the rubber ring tightly clamping the four folding columns, the rubber ring driving the four inclined sliding blocks to move towards the wedge block.

4. The plastic part punching tooling of claim 1, wherein, a waste box arranged around the positioning block, the waste box receiving the plastic waste after punching.

5. The plastic part punching tooling of claim 1, wherein: the punching module comprising a punching mechanism and a cleaning mechanism; the punching mechanism adjacent to the positioning module, the punching mechanism opposite to the blind hole of the plastic part, the punching mechanism punching the blind hole; the cleaning mechanism adjacent to the punching mechanism, the cleaning mechanism cleaning the waste after punching by the punching mechanism.

6. The plastic part punching tooling of claim 5, wherein, the punching mechanism comprising a punching cylinder, a punch pipe connecting block, a punch pipe, a guide sleeve and a guide sleeve support; the output end of the punching cylinder connected with the punch pipe connecting block, the punch pipe fixed on the punch pipe connecting block, the punch pipe opposite to the blind hole; the guide sleeve sleeved on the punch pipe for guiding the punch pipe, the guide sleeve support supporting and fixing the guide sleeve; the punching cylinder extending, driving the punch pipe to punch the blind hole; the cleaning mechanism arranged in the punch pipe, cleaning the punching waste remaining on the punch pipe.

7. The plastic part punching tooling of claim 6, wherein the punch is a flat punch. the cleaning mechanism comprising a cleaning cylinder, a thimble and a thimble connecting block; the cleaning cylinder arranged on the punching cylinder, the output end of the cleaning cylinder connected with the thimble connecting block; the thimble connecting block fixing the thimble, the thimble extending into the punch pipe; The cleaning cylinder extends to drive the ejector pin to pass through the punch pipe, and clean the blanking waste remained on the punch pipe.

8. The plastic part punching tooling of claim 1, wherein, The pressing module comprises a mounting frame, a pressing cylinder, a pressing plate and four pressing blocks. The mounting frame is arranged above the positioning module, and the mounting frame fixes the pressing cylinder. An output end of the pressing cylinder is connected with the pressing plate. The four pressing blocks are respectively fixed at four corners of the pressing plate. The pressing cylinder extends to drive the pressing plate and the four pressing blocks to press down and cover the corners of the plastic part.

9. The plastic part punching tooling of claim 8, wherein, The pressing module further comprises a guide rod and a linear bearing. The guide rod passes through the mounting frame and is connected with the pressing plate, and the guide rod guides the moving direction of the pressing plate. The linear bearing is installed on the mounting frame and is sleeved on the guide rod.

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