A burr removing machine for injection molding of automobile plastic parts

Abstract

The application provides a burr removing machine for injection molding of automobile plastic parts, and relates to the technical field of dry ice deburring. The burr removing machine comprises a first lead screw, a second lead screw horizontally arranged above the first lead screw, and a third lead screw. The first lead screw is provided with a first sliding block, the second lead screw is provided with a second sliding block, the second sliding block is a fixed part of the third lead screw, and the third lead screw is provided with a third sliding block. The third sliding block comprises a first rotating part and a nozzle connected with the first rotating part and connected with a dry ice source. The first sliding block comprises a second rotating part and a clamping seat connected with the second rotating part. When high-pressure gas contacts a workpiece, sputtering occurs, and the sputtering range changes with the change of the angle of the workpiece. Since the nozzle is limited to rotate in the front-rear direction, when the clamping seat deflects to one side, most of the sputtering high-pressure gas flow will flow downward. Accordingly, the extension amount of the first soft plate from the interlayer is adjusted to cover the sputtering range of the high-pressure gas flow, thereby achieving the function of safety protection.

Description

Technical Field

[0001] This invention relates to the field of dry ice deburring technology, and more particularly to a burr removal machine for injection molding of automotive plastic parts. Background Technology

[0002] Dry ice has an extremely low temperature. When it is sprayed onto the surface of an object, it rapidly sublimates into carbon dioxide gas, generating high pressure. During this process, the high-pressure gas generated by the sublimation of dry ice instantly impacts the surface of the part, knocking away burrs and impurities, causing them to peel off from the surface. Dry ice deburring has advantages such as being pollution-free, damage-free, and highly efficient. However, as mentioned above, the working principle of dry ice deburring relies on high-pressure gas contacting the workpiece surface. Based on user feedback, high-pressure gas may overflow or splash out during high-pressure gas deburring, posing a safety hazard. In addition, pre-cooling the workpiece can improve the deburring effect; however, current dry ice deburring equipment does not effectively utilize the splashed high-pressure gas for pre-cooling the workpiece, resulting in waste. Therefore, it is necessary to propose a burr removal machine for the fine treatment of automotive plastic parts, focusing on protection and reuse. Summary of the Invention

[0003] The purpose of this invention is to provide a burr removal machine for injection molding of automotive plastic parts, so as to solve the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A burr removal machine for injection molding of automotive plastic parts includes a first lead screw, a second lead screw spanning and mounted above the first lead screw, and a third lead screw. The first lead screw is equipped with a first slider, the second lead screw is equipped with a second slider, the second slider is a fixing part of the third lead screw, and the third lead screw is equipped with a third slider.

[0006] The third slider has a first rotating part and a nozzle connected to the first rotating part and connected to a dry ice source;

[0007] The first slider has a second rotating part and a clamp connected to the second rotating part;

[0008] The clamp has extensions at its four corners, and a cover plate for fixing the workpiece is provided on the top of the clamp. The cover plate and the clamp are sandwiched together. The clamp has a first groove on both sides that communicates with the sandwich and extends into the extension.

[0009] It also includes a first flexible plate that extends out of the interlayer and enters two first slots at both ends. Each extension is equipped with a first spring that pulls the portion of the first flexible plate into the first slot. There is also a counterweight connected to the first flexible plate in the interlayer. When the clamp rotates, the counterweight slides under gravity in the interlayer and pulls the first flexible plate to adjust the amount of the first flexible plate extending into the first slots on both sides.

[0010] It also includes a second flexible plate, which is close to the bottom of the clamp and extends upward to the extensions on both sides that are not covered by the first flexible plate. Each extension is equipped with a second spring, which pulls the upwardly extended portion of the second flexible plate so that when the first rotating part squeezes the end of any second flexible plate with the nozzle, the other end of the second flexible plate extends further upward.

[0011] Preferably, the first flexible plate contacts the edge of the cover plate, and the cover plate has a second groove on the side near the first flexible plate. The second groove is located between the interlayer and the first groove, and the groove openings on both sides of the second groove extend to the second flexible plate.

[0012] Preferably, the frost layer pre-cooled on the surface of the first flexible plate is cut and transferred into the second groove during the contact between the first flexible plate and the cover plate.

[0013] Preferably, the second groove is supported by a first flexible plate that enters the first groove from within the interlayer, and after being supported, the second groove forms a space for melting the frost layer.

[0014] Preferably, the water from the melted frost adheres to the surfaces of the first and second flexible boards.

[0015] Preferably, the first rotating part includes an extension frame installed in front of the third slider. The extension frame is equipped with a fourth motor and a reducer meshing with the fourth motor. The reducer is equipped with a nozzle clamp, which is the fixing part of the nozzle. When the fourth motor outputs power, the nozzle clamp drives the nozzle to rotate back and forth.

[0016] Preferably, the second rotating part includes a protrusion disposed at the first slider, and a fifth motor is fixed behind the protrusion. The power transmission part of the fifth motor extends to the front of the protrusion and fixes the clamp, so that when the fifth motor outputs power, the clamp is driven to rotate left and right by the fifth motor.

[0017] Preferably, the nozzle is equipped with a hose that is connected to a dry ice source.

[0018] Preferably, a first motor is also used in conjunction with the first lead screw, which transmits power to the first lead screw to move the first slider back and forth. A second motor is also used in conjunction with the second lead screw, which transmits power to the second lead screw to move the second slider left and right. A third motor is also used in conjunction with the third lead screw, which transmits power to the third lead screw to move the third slider up and down.

[0019] Preferably, the first lead screw is equipped with a base, and the base has support frames on both sides. The support frames support the second lead screw, so that the second lead screw spans across and is located above the first lead screw.

[0020] The beneficial effects of this invention are:

[0021] 1. When high-pressure gas comes into contact with the workpiece, there is sputtering. The sputtering range changes with the angle of the workpiece. Since the nozzle is limited to rotating in the front and back direction, when the clamp is deflected to one side, most of the sputtered high-pressure gas flow will be downward. Therefore, adjusting the extension of the first flexible plate from the interlayer can cover the sputtering range of the high-pressure gas flow and play a safety protection role.

[0022] 2. When the nozzle pointing at the workpiece squeezes the end of any of the second flexible plates during rotation, the other end of the second flexible plate extends further upward. The extended position will be directly opposite the nozzle of the nozzle, thus working with the first flexible plate to create a complete protective barrier, minimizing the safety hazards of high-pressure airflow during sputtering. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a burr removal machine used in the injection molding of automotive plastic parts.

[0024] Figure 2 for Figure 1 A schematic diagram of the structure after removing the protective mechanism, clamps, and fifth motor;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a combined structural diagram of the protective mechanism and clamps;

[0027] Figure 5 This is a structural diagram of the combined structure of the first protective part and the fixture;

[0028] Figure 6 This is a structural diagram of the combination of the second protective part and the clamp;

[0029] Figure 7 for Figure 4 The structure diagram of the fixture shown is as follows;

[0030] Figure 8 This is a schematic diagram of the structure of the first protective section;

[0031] Reference numerals: 1. Base; 2. Support frame; 3. First lead screw; 4. Second lead screw; 5. Third lead screw; 6. First slider; 7. Second slider; 8. Third slider; 9. First motor; 10. Second motor; 11. Third motor; 12. Extension frame; 13. Fourth motor; 14. Reducer; 15. Hose; 16. Fifth motor; 17. Clamp; 18. Protrusion; 19. Nozzle clamp; 20. Nozzle; 21. Extension; 22. First groove; 23. First flexible plate; 24. First spring; 25. First slider; 26. Second flexible plate; 27. Second slider; 28. Second spring; 29. ​​Positioning block; 30. Second groove; 31. Cover plate; 32. Counterweight. Detailed Implementation

[0032] To make the technical means, creative features, achieved objectives, and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention.

[0033] Specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0034] Example 1

[0035] This embodiment presents a burr removal machine for injection molding of automotive plastic parts. Please refer to [link / reference]. Figures 1-8 The deburring machine for injection molding of automotive plastic parts includes three axes and two rotating axes.

[0036] Specifically, the three-axis system is located above the base 1. The first lead screw 3 is closest to the base 1. The first lead screw 3 is equipped with a first motor 9 for outputting power and a first slider 6 that slides in cooperation with the first lead screw 3.

[0037] Please see Figure 1 and Figure 2 The base 1 has support frames 2 on both sides. The support frames 2 are responsible for fixing the second lead screw 4. The second lead screw 4 spans across and is located above the first lead screw 3. The structure that cooperates with the second lead screw 4 includes the second motor 10 and the second slider 7 that slides with the second lead screw 4.

[0038] Please continue reading. Figure 1 and Figure 2 The second slider 7 is used to fix the third lead screw 5, which is the same as the first lead screw 3 and the second lead screw 4. The third lead screw 5 is equipped with a third motor 11 for outputting power, and a third slider 8 that slides with the third lead screw 5.

[0039] Please see Figure 2 and Figure 3 The third slider 8 is equipped with a first rotating part, which includes an extension frame 12 installed in front of the third slider 8. The extension frame 12 is equipped with a fourth motor 13 and a reducer 14 meshing with the fourth motor 13. The reducer 14 is equipped with a nozzle clamp 19. Thus, when the fourth motor 13 outputs power, the speed is adjusted by the reducer 14, causing the nozzle clamp 19 to rotate back and forth.

[0040] Please see Figure 1 and Figure 2 The first slider 6 is equipped with a second rotating part, which includes a protrusion 18 provided at the first slider 6. A fifth motor 16 is located behind the protrusion 18. The power transmission part of the fifth motor 16 extends to the front of the protrusion 18. Thus, with the power transmission part of the fifth motor 16 as the axis, a left-right rotation movement can be performed.

[0041] Please see Figures 1-3 The aforementioned nozzle clamp 19 holds the nozzle 20 with the nozzle facing downwards. In addition, the nozzle 20 has a hose 15 connected to the dry ice source. Thus, the pump unit pumps in the dry ice source, and the dry ice is guided by the hose 15 to be sprayed outwards from the nozzle 20.

[0042] Please see Figure 1 The shaft through which the aforementioned fifth motor 16 transmits power is fixed with a clamping seat 17. Compared to a traditional workpiece clamping seat, this embodiment makes significant improvements to the clamping seat 17, such as... Figures 4-8 As shown, the specific improvements are as follows:

[0043] First, the clamp 17 has extensions 21 at its four corners. The clamp 17 is also equipped with a cover plate 31 for fixing the workpiece. There is a sandwich between the cover plate 31 and the clamp 17. It should be noted that the clamp 17 is equipped with a first groove 22 on both sides that communicates with the sandwich. The first groove 22 extends into the extension 21.

[0044] Second, there is a first flexible board 23, which extends out of the interlayer and enters the two first slots 22 at both ends. Related accessories are also made around the first flexible board 23.

[0045] Specifically, each extension 21 is equipped with a first spring 24. One end of the first spring 24 is fixed to the end of the groove that extends into the extension 21 from the first groove 22, and the other end is fixed to a first slide head 25 that slides with the first groove 22. The first slide head 25 is the fixing part of the first flexible plate 23. In this way, the first spring 24 will pull the first flexible plate 23 into the part of the first groove 22.

[0046] To further explain, there is also a counterweight 32 connected to the first flexible plate 23 in the interlayer. When the clamping seat 17 rotates, the counterweight 32 slides under gravity in the interlayer and pulls the first flexible plate 23, adjusting the amount of the first flexible plate 23 extending into the first grooves 22 on both sides in the interlayer.

[0047] Third, there is a second flexible plate 26. The second flexible plate 26 is close to the bottom of the clamp 17 and extends upward to the extension 21 on both sides that are not covered by the first flexible plate 23. It is consistent with the first flexible plate 23. The second flexible plate 26 is also equipped with related accessories.

[0048] Specifically, each extension 21 is equipped with a second spring 28. One end of the second spring 28 has a positioning block 29 fixed to the end of the first groove 22, and the other end of the second spring 28 is fixed with a second slider 27, which is the fixing part of the second flexible plate 26. In this way, the second spring 28 will pull the upward extension of the second flexible plate 26, and when the nozzle 20 squeezes the end of any second flexible plate 26, the other end of the second flexible plate 26 will extend further upward.

[0049] In this embodiment, the main function of the first flexible circuit board 23 and the second flexible circuit board 26 is protection.

[0050] The first flexible plate 23 has the characteristic of adaptive protection. The mechanism for adjusting the amount of the first flexible plate 23 extending into the first grooves 22 on both sides is the effect of gravity on the counterweight 32 itself.

[0051] To better understand the principle, the first flexible plate 23, which is a whole, is divided into three sections. The first section is located in the interlayer, and the second and third sections are located in the two first grooves 22 respectively. Accordingly, when the clamp 17 tilts to one side, the second section, which is on the same side as the tilt direction, will be further supplemented by the first section. Correspondingly, the third section will be supplemented into the first section. It can be expected that the first section with a larger area will widely cover the splashing range of the nozzle 20.

[0052] It should be noted that when high-pressure gas comes into contact with the workpiece, there is sputtering. The sputtering range changes with the angle of the workpiece. Since the nozzle 20 is limited to rotating in the front and back direction, when the clamp 17 is deflected to one side, most of the sputtered high-pressure gas flow will be downward. Based on this, and combined with the actual situation, adjusting the extension of the first flexible plate 23 from the interlayer can cover the sputtering range of the high-pressure gas flow and play a safety protection role.

[0053] The second flexible plate 26 is characterized by passive protection. Specifically, when the nozzle 20 pointing at the workpiece squeezes the end of any of the second flexible plates 26 during rotation, the other end of the second flexible plate 26 extends further upward. The extended position will be directly opposite the nozzle of the nozzle 20, thus working together with the first flexible plate 23 to create a complete protective barrier, minimizing the safety hazards of high-pressure airflow during sputtering.

[0054] In this embodiment, the first flexible plate 23 and the second flexible plate 26 can be pressed at their ends to move the portion extending to the extension 21 downwards, making it convenient for personnel to fix and disassemble the workpiece.

[0055] In this embodiment, the first flexible printed circuit board 23 and the second flexible printed circuit board 26 also have other functions, the specific functions of which are as follows:

[0056] Please see Figures 4-8 The first flexible plate 23 contacts the edge (top edge) of the cover plate 31. The cover plate 31 has a second groove 30 on the side near the first flexible plate 23. The second groove 30 is between the interlayer and the first groove 22, and the groove openings on both sides of the second groove 30 extend to the second flexible plate 26.

[0057] Under the influence of low-temperature sputtering gas, the surface of the first flexible plate 23 will be covered with a frost layer. Accordingly, during the rotation of the clamp 17, the first flexible plate 23 will cut off and transfer the frost layer pre-cooled on its surface to the second groove 30 under the traction of the counterweight 32.

[0058] It should be noted that the second groove 30 is supported by the first flexible plate 23 that enters the first groove 22 from the interlayer. After being supported, the second groove 30 forms a space for melting the frost layer. In addition, the cover plate 31 is the fixing part of the workpiece. As described above, the workpiece is pre-cooled, and the deburring effect is better. In this way, the frost layer in the second groove 30 will melt in the heat absorption of the cover plate 31. The melted water will re-adhere to the surface of the first flexible plate 23. Repeating the above actions can pre-cool the workpiece and improve the deburring quality.

[0059] Please see Figure 5 and Figure 7 As explained above, the grooves on both sides of the second groove 30 extend to the second flexible plate 26. It can be foreseen that the melted water will not only adhere to the surface of the first flexible plate 23, but also to the surface of the second flexible plate 26. In addition, the surface of the second flexible plate 26 is in contact with the edge (top edge) of the clamp 17. Thus, the edge of the clamp 17 will cut the frost layer adhering to the surface of the second flexible plate 26, thereby cooling the cover plate 31 that fixes the workpiece. The effect is the same as that of the first flexible plate 23.

[0060] In this embodiment, the first flexible plate 23 and the second flexible plate 26 have cutting actions, which produce sound. Therefore, using melted water as a lubricating medium can reduce the sound generated by the cutting action.

[0061] 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.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A burr removal machine for injection molding of automotive plastic parts, comprising a first lead screw, a second lead screw spanning and mounted above the first lead screw, and a third lead screw, wherein... The first lead screw component is equipped with a first slider, the second lead screw component is equipped with a second slider, the second slider is a fixing part of the third lead screw component, and the third lead screw component is equipped with a third slider. The third slider has a first rotating part and a nozzle connected to the first rotating part and connected to a dry ice source. The first slider has a second rotating part and a clamp connected to the second rotating part; The clamp has extensions at its four corners, and a cover plate for fixing the workpiece is provided on the top of the clamp. The cover plate and the clamp are sandwiched together. The clamp has a first groove on both sides that communicates with the sandwich and extends into the extension. It also includes a first flexible board that extends out of the interlayer and its two ends enter two first slots. Each extension is equipped with a first spring that pulls the portion of the first flexible board into the first slot. The interlayer also includes a counterweight connected to the first flexible plate. When the clamp rotates, the counterweight slides and pulls the first flexible plate within the interlayer under gravity, adjusting the amount by which the first flexible plate extends into the first grooves on both sides. It also includes a second flexible plate, which is close to the bottom of the clamp and extends upward to the extension portion on both sides that are not covered by the first flexible plate. Each extension portion is equipped with a second spring, which pulls the upward extension portion of the second flexible plate. When the first rotating part squeezes the end of any second flexible plate with the nozzle, it causes the other end of the second flexible plate to extend further upward.

2. The burr removal machine for injection molding of automotive plastic parts according to claim 1, characterized in that: The first flexible plate contacts the edge of the cover plate. The cover plate has a second groove on the side near the first flexible plate. The second groove is located between the interlayer and the first groove, and the groove openings on both sides of the second groove extend to the second flexible plate.

3. The burr removal machine for injection molding of automotive plastic parts according to claim 2, characterized in that: The frost layer pre-cooled on the surface of the first flexible board is cut and transferred into the second groove during the contact between the first flexible board and the cover plate.

4. The burr removal machine for injection molding of automotive plastic parts according to claim 3, characterized in that: The second groove is supported by the first flexible plate that enters the first groove from the interlayer, and after being supported, the second groove forms a space for melting the frost layer.

5. The burr removal machine for injection molding of automotive plastic parts according to claim 4, characterized in that: The water from the melted frost adheres to the surfaces of the first and second flexible boards.

6. The burr removal machine for injection molding of automotive plastic parts according to claim 1, characterized in that: The first rotating part includes an extension frame installed in front of the third slider. The extension frame is equipped with a fourth motor and a reducer meshing with the fourth motor. The reducer is equipped with a nozzle clamp, which is the fixing part of the nozzle. When the fourth motor outputs power, the nozzle clamp drives the nozzle to rotate back and forth.

7. The burr removal machine for injection molding of automotive plastic parts according to claim 1, characterized in that: The second rotating part includes a protrusion provided at the first slider. A fifth motor is fixed behind the protrusion. The power transmission part of the fifth motor extends to the front of the protrusion and fixes the clamp. When the fifth motor outputs power, the clamp is driven to rotate left and right by the fifth motor.

8. The burr removal machine for injection molding of automotive plastic parts according to claim 6, characterized in that: The nozzle is equipped with a hose that is connected to a dry ice source.

9. A burr removal machine for injection molding of automotive plastic parts according to claim 1, characterized in that: The first lead screw is also equipped with a first motor, which transmits power to the first lead screw to move the first slider back and forth. The second lead screw is also equipped with a second motor, which transmits power to the second lead screw to move the second slider left and right. The third lead screw is also equipped with a third motor, which transmits power to the third lead screw to move the third slider up and down.

10. A burr removal machine for injection molding of automotive plastic parts according to claim 1, characterized in that: The first lead screw component is equipped with a base, and the base has support frames on both sides. The support frames support the second lead screw component, so that the second lead screw component spans across and is located above the first lead screw component.

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