Mim micro part rapid punching and setting process

Abstract

The present application relates to the technical field of MIN, in particular to a kind of MIM micro parts quick punching and placing process, comprising the following steps: S100, after micro parts are taken out from forming equipment, overturn, then shift to mobile fixture;S200, ceramic sheet and punching fixture are placed in turn in transfer fixture;S300, mobile fixture is inverted to placing fixture, so that the micro parts in mobile fixture enter punching fixture;S400, after the ceramic sheet and punching fixture of stacking are taken away from transfer fixture, put into punching equipment;S500, the micro parts in punching fixture are punched using punching equipment;S600, the ceramic sheet and punching fixture of stacking are taken out from punching equipment, then install material fixture to the end of punching fixture away from ceramic sheet;S700, the ceramic sheet, punching fixture and material fixture of stacking are overturned, then let the micro parts in punching fixture fall into material fixture;S800, the micro parts in material fixture are blown gas treatment.The present application improves the punching efficiency of micro parts.

Description

Technical Field

[0001] This invention relates to the field of MIN technology, and in particular to a rapid punching and stacking process for MIM micro parts. Background Technology

[0002] For micro-parts formed by MIM (Metal Injection Molding), such as internal gear shells, the forming process typically involves two steps: the first step is to form the part using the MIM process, and the second step is to punch holes in the formed micro-part to create its internal teeth. However, due to the extremely small size of these micro-parts (such as the internal gear shells used in mobile phones), they need to be flipped after forming before punching. This flipping process involves a swivel tray, which can easily cause the micro-part to shift in posture or position, thus affecting the overall process efficiency. Summary of the Invention

[0003] This invention addresses the problems of existing technologies by providing a rapid punching and tray-stacking process for MIM micro-parts, which can quickly complete tray-stacking during the forming and punching process of micro-parts, thereby improving efficiency.

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

[0005] This invention provides a rapid punching and stacking process for MIM (Micro-Insulation) parts, comprising the following steps: S100. After removing the miniature part from the molding equipment, flip it over and then transfer it to the moving fixture; S200. Place ceramic pieces and a punching fixture sequentially in the turnover fixture; S300. The moving fixture containing the micro-parts is inverted onto the swivel plate fixture so that the micro-parts inside the moving fixture enter the punching fixture. S400. After removing the stacked ceramic sheets and punching fixture from the rotating shaft fixture, place them into the punching equipment; S500. Using a punching machine to punch micro-parts in a punching fixture; S600. Remove the stacked ceramic sheets and punching fixture from the punching equipment, and then install the material holding fixture onto the end of the punching fixture away from the ceramic sheets; S700. The stacked ceramic sheets, punching fixture, and material container are flipped over, and then the micro-parts inside the punching fixture fall into the material container. S800. Perform air blowing treatment on the micro parts inside the material container fixture.

[0006] Furthermore, step S100 specifically includes: S110. Place a guide fixture on the receiving fixture, and make the holes on the receiving fixture correspond one-to-one with the holes on the guide fixture. S120. A robotic arm is used to place miniature parts into a guide fixture and a receiving fixture; S130. A movable fixture is stacked at the end of the guide fixture away from the receiving fixture, and the holes of the movable fixture are connected to the holes of the guide fixture one by one. S140. Rotate the stacked receiving fixture, guide fixture and moving fixture together by 180° so that the micro parts fall completely into the moving fixture; S150. Sequentially and vertically remove the receiving fixture and the guide fixture.

[0007] Furthermore, between steps S120 and S130, the stacked receiving fixture and guide fixture are shaken.

[0008] Furthermore, in step S200, when the ceramic sheet and the punching fixture are stacked, the ceramic sheet covers one end of all the holes in the punching fixture.

[0009] Furthermore, step S400 specifically includes: S410. Pull the lower die of the punching equipment out of the punching equipment; S420. After removing the stacked ceramic sheets and punching fixture from the rotating shaft fixture, place them into the lower mold; S430. Use the pin to pass through the punching fixture, ceramic sheet and lower die in sequence; S440. Reset the lower die into the punching equipment.

[0010] Furthermore, step S500 specifically includes: S510. Using a punching machine to punch micro parts; S520. Air blowing treatment is applied to the punching fixture; S530. Use a punching machine to punch the micro parts again; S540. Air blowing treatment is applied to the punching fixture.

[0011] Furthermore, step S700 specifically includes: S710. Flip over the stacked ceramic sheets, punching fixture, and material container fixture; S720. Remove the ceramic sheet from the punching fixture in a direction perpendicular to the end face of the punching fixture; S730. A punching fixture is struck to allow the miniature parts inside the punching fixture to fall into the material container; S740. Remove the punching fixture from the material container fixture in a direction perpendicular to the end face of the material container fixture.

[0012] Furthermore, step S800 specifically includes: S810. Transfer the micro-parts in the material container fixture to the air-blowing lower fixture; S820. Cover the upper air-blowing fixture with the lower air-blowing fixture, and make the holes of the upper air-blowing fixture correspond and connect with the holes of the lower air-blowing fixture one by one. S830. Inflate a micro-part at one end of an air-blowing fixture; S840. A micro-part is blown with air at one end of an air-blowing fixture; S850. Remove the upper air-blowing fixture from the lower air-blowing fixture, and then cover the container fixture onto the lower air-blowing fixture; S860. Rotate the covered air-blowing lower fixture and the container fixture together by 180°, and then remove the air-blowing lower fixture from the container fixture.

[0013] Furthermore, the air-blowing lower fixture includes a main body and a limiting part disposed on the side wall of the main body. The thickness of the limiting part is greater than the thickness of the main body. The limiting part is used to limit and align the material container / air-blowing upper fixture that covers the main body. The hole of the air-blowing lower fixture is disposed in the main body.

[0014] Furthermore, the holes in the upper and lower air-blowing fixtures are both through holes; the holes in the upper and lower air-blowing fixtures cooperate to form acupoints for accommodating and limiting the micro-parts.

[0015] The beneficial effects of the present invention: The present invention uses multiple jigs in a clever combination to allow micro parts to maintain their corresponding posture and relative position during flipping and transfer, thereby improving the overall production efficiency. Attached Figure Description

[0016] Figure 1 This is a flowchart of the present invention.

[0017] Figure 2 This is a flowchart of step S100 of the present invention.

[0018] Figure 3 This is a flowchart of step S400 of the present invention.

[0019] Figure 4 This is a detailed flowchart of step S800 of the present invention.

[0020] Figure 5 This is a schematic diagram of the turnover fixture used in this invention.

[0021] Reference numerals: 1—moving fixture, 2—turnover fixture, 3—ceramic sheet, 4—punching fixture, 5—display fixture, 6—punching equipment, 7—material holding fixture, 8—material receiving fixture, 9—guide fixture, 10—miniature parts, 11—lower air blowing fixture, 12—upper air blowing fixture, 13—air blowing gun, 21—body, 22—positioning part, 23—mounting groove, 61—lower mold, 62—pin, 63—upper mold, 111—main body, 112—limiting part. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown, the present invention provides a rapid punching and stacking process for MIM micro parts, comprising the following steps: S100. After removing the micro part 10 from the molding equipment, flip it over and then transfer it to the moving fixture 1; S200. Place ceramic sheet 3 and punching fixture 4 sequentially in turnover fixture 2; S300. The movable fixture 1 containing the micro part 10 is inverted onto the plate fixture 5 so that the micro part 10 in the movable fixture 1 enters the punching fixture 4. S400. After removing the stacked ceramic sheets 3 and the punching fixture 4 from the rotating shaft fixture, place them into the punching equipment 6; S500. The micro part 10 in the punching fixture 4 is punched using the punching equipment 6; S600. Remove the stacked ceramic sheet 3 and the punching fixture 4 from the punching equipment 6, and then install the material container 7 onto the end of the punching fixture 4 away from the ceramic sheet 3. S700. Flip over the stacked ceramic sheet 3, punching fixture 4 and material container 7, and then let the micro part 10 in the punching fixture 4 fall into the material container 7. S800. The micro-parts 10 inside the material fixture 7 are subjected to air blowing treatment.

[0024] In actual use, the moving fixture 1, the punching fixture 4, and the swivel fixture 5 each have holes distributed in a rectangular array. The holes in the moving fixture 1 and the swivel fixture 5 are blind holes, while the holes in the punching fixture 4 are through holes (preferably T-shaped through holes). These holes are used to accommodate the micro parts 10.

[0025] The following defines the upper surface of the micro-part 10 after molding and its position in the mold as the top and the lower surface as the bottom, and then provides a more detailed description of the invention: After the micro part 10 is formed, it needs to be flipped over and placed in the movable fixture 1. Then, the movable fixture 1 containing the micro part 10 is inverted (i.e., the blind hole and the through hole are aligned and connected) so that the micro part 10 falls into the punching fixture 4. Then, the movable fixture 1 is removed from the punching fixture 4 in a direction perpendicular to the contact surface between the movable fixture 1 and the punching fixture 4. At this time, the micro part 10 is successfully flipped over so that its top is facing up and falls onto the punching fixture 4 and is sent into the punching equipment 6 for punching. After punching, the ceramic sheet 3, the punching fixture 4, and the material container 7 that is fitted to the punching fixture 4 are rotated 180° so that the micro parts 10 inside the punching fixture 4 fall smoothly into the material container 7. The advantage of this is that it allows the micro parts 10 to be transferred and to be separated from the waste generated by punching through the transfer. Then, the micro parts 10 inside the material container 7 are blown with air to remove the debris and any residual waste on their surface.

[0026] The above method involves the use of multiple jigs made manually. The ceramic sheet 3 provides support without scratching the micro parts 10, thus enabling the punching and tray-setting actions to be completed while maintaining the relative distance and posture between the micro parts 10, thereby ensuring overall production efficiency.

[0027] In this embodiment, step S100 specifically includes: S110. Place a guide fixture 9 on the receiving fixture 8, and make the holes on the receiving fixture 8 and the holes on the guide fixture 9 correspond and connect one by one; S120. A robotic arm is used to place the micro-part 10 into the guide fixture 9 and the receiving fixture 8; S130. The movable fixture 1 is stacked at the end of the guide fixture 9 away from the receiving fixture 8, and the holes of the movable fixture 1 are connected to the holes of the guide fixture 9 one by one. S140. Rotate the stacked receiving fixture 8, guide fixture 9 and moving fixture 1 together by 180° so that the micro part 10 falls completely into the moving fixture 1. S150. Sequentially and vertically remove the receiving fixture 8 and the guide fixture 9.

[0028] When the micro part 10 is taken out of the equipment, it has already been sintered and shaped, so its hardness is sufficient. When the guide fixture 9 is stacked on the receiving fixture 8, the end with the smaller inner diameter of the through hole needs to be aligned with the hole on the receiving fixture 8. Then, the robot arm and suction cup module are used to take the micro part 10 out of the equipment and put it into the guide fixture 9. The micro part 10 is corrected along the hole on the guide fixture 9 and partially enters the receiving fixture 8. Then, the end of the moving fixture 1 with the hole is attached to the guide fixture 9. The three stacked items are then fixed and rotated 180° so that the micro part 10 falls smoothly into the moving fixture 1 and is rotated. This makes the bottom of the micro part 10 face up, which is convenient for adjusting the top of the micro part 10 to face up when it is transferred to the punching fixture 4. In order not to affect the micro part 10, the receiving fixture 8 and the guide fixture 9 are then removed vertically. This vertical removal means that the receiving fixture 8 and the guide fixture 9 are moved away from the moving fixture 1 in a direction perpendicular to the end face of the moving fixture 1 that is close to the guide fixture 9.

[0029] Since the moving fixture 1 and the guide fixture 9 are stacked together and flipped, the micro part 10 does not have enough space to shift during the flipping action in step S140, and can only fall into the hole of the moving fixture 1 along the through hole.

[0030] Specifically, between steps S120 and S130, the stacked receiving fixture 8 and guide fixture 9 are shaken. The shaking method mainly involves fixing the receiving fixture 8 and guide fixture 9 with pins or other structures, and then shaking them slightly 3-5 times. This can correct the posture of the micro part 10, ensuring that the micro part 10 is positioned in the guide fixture 9 and the receiving fixture 8 in the desired posture.

[0031] Specifically, in step S200, when the ceramic sheet 3 and the punching fixture 4 are stacked, the ceramic sheet 3 covers one end of all the holes in the punching fixture 4. That is, in order to save costs, the area of ​​the ceramic sheet 3 is smaller than the area of ​​the punching fixture 4. The ceramic sheet 3 only needs to cover the holes in the punching fixture 4 to ensure that the micro part 10 is blocked by the ceramic sheet 3, thereby stably supporting the micro part 10 without sticking to it. During punching, the precision of the punching equipment 6 needs to be set to ensure that the punching task is completed without impacting the ceramic sheet 3 and causing damage to it.

[0032] Therefore, the punching device 6 of the present invention preferably uses a servo motor as the drive source.

[0033] In this embodiment, the turnover fixture 2 includes a body 21 and a plurality of positioning parts 22. The plurality of positioning parts 22 can be disposed at each corner of the edge of the body 21. The body 21 is recessed inward to form a mounting groove 23, the depth of which is adapted to the thickness of the ceramic sheet 3. Thus, when the ceramic sheet 3 is installed on the body 21, the ceramic sheet 3 precisely fills the mounting groove 23 to form a flat surface. When the punching fixture 4 is placed on the turnover fixture 2, the plurality of positioning parts 22 respectively abut against each corner of the edge of the punching fixture 4, thereby achieving the effect of stacking the punching fixture 4 and the turnover fixture 2, and ensuring that the ceramic sheet 3 precisely covers all the holes of the punching fixture 4.

[0034] In this embodiment, step S400 specifically includes: S410. Pull the lower die 61 of the punching equipment 6 out of the punching equipment 6; S420. After removing the stacked ceramic pieces 3 and the punching fixture 4 from the rotating shaft fixture, place them into the lower mold 61; S430. Use pin 62 to pass through punching fixture 4, ceramic sheet 3 and lower mold 61 in sequence; S440. Reset the lower die 61 into the punching device 6.

[0035] The upper die 63 of the punching device 6 is used for punching, while the lower die 61 is used to accommodate the ceramic sheet 3 and the punching fixture 4 stacked together. Before punching, a pin 62 is used to pass through the punching fixture 4, the ceramic sheet 3, and the lower die 61 to fix them relatively, so as to ensure that the relative posture of the three will not change during the punching process, thus ensuring the accuracy of punching.

[0036] In this embodiment, step S500 specifically includes: S510. The micro part 10 is punched using the punching equipment 6; S520. Air blowing treatment is applied to the punching fixture 4; S530. Use punching equipment 6 to punch the micro part 10 again; S540. Perform air blowing treatment on the punching fixture 4.

[0037] In the punching process, the micro-parts 10 are punched by the upper die 63 of the punching equipment 6. This invention requires two punching operations to ensure that all holes in the micro-parts 10 are reliably formed. After each punching operation, the micro-parts 10 need to be blown with air to remove the debris adhering to the surface of the micro-parts 10 due to punching, ensuring that the reliability of the punching operation will not be affected by debris interference in the next punching operation.

[0038] In this embodiment, step S700 specifically includes: S710. Flip over the stacked ceramic sheet 3, punching fixture 4 and material container 7; S720. Remove the ceramic sheet 3 from the punching fixture 4 in a direction perpendicular to the end face of the punching fixture 4; S730. The punching fixture 4 is struck to allow the miniature part 10 inside the punching fixture 4 to fall into the material container 7; S740. Remove the punching fixture 4 from the material container 7 in a direction perpendicular to the end face of the material container 7.

[0039] After punching is completed, the micro-part 10 needs to be transferred to the container fixture 7 for storage and transportation. During this process, the present invention utilizes the method of flipping the ceramic sheet 3, the punching fixture 4, and the container fixture 7 to transfer the micro-part 10 with its bottom facing upwards into the container fixture 7. Since the punching process is complete at this point, which end of the micro-part 10 faces upwards will not affect subsequent process operations.

[0040] After punching, due to the extrusion of the punching equipment 6, the micro part 10 will have a certain degree of interference fit with the punching fixture 4, that is, the micro part 10 is stuck on the punching fixture 4. In order to allow the micro part 10 to smoothly enter the material container 7 from the punching fixture 4, the present invention requires the use of a rubber-tipped hammer or the operator's hand to gently tap the punching fixture 4, so as to disengage the micro part 10 from the punching fixture 4 through vibration, thus ensuring the reliability of the transfer.

[0041] In this embodiment, step S800 specifically includes: S810. Transfer the micro part 10 in the material container 7 to the air-blowing lower fixture 11; S820. Cover the upper air-blowing fixture 12 with the lower air-blowing fixture 11, and make the holes of the upper air-blowing fixture 12 correspond and connect with the holes of the lower air-blowing fixture 11 one by one. S830. Air is blown onto the micro part 10 at one end of the air-blowing fixture 11; S840. Inflate the micro part 10 at one end of the air-blowing fixture 12; S850. Remove the upper air-blowing fixture 12 from the lower air-blowing fixture 11, and then cover the lower air-blowing fixture 7 with the material container fixture 7; S860. Rotate the covered air-blowing lower fixture 11 and the container fixture 7 together by 180°, and then remove the air-blowing lower fixture 11 from the container fixture 7.

[0042] Specifically, the air-blowing lower fixture 11 includes a main body 111 and a limiting part 112 disposed on the side wall of the main body 111. The thickness of the limiting part 112 is greater than the thickness of the main body 111. The limiting part 112 is used to limit and align the material-containing fixture 7 / air-blowing upper fixture 12 that covers the main body 111. The hole of the air-blowing lower fixture 11 is disposed in the main body 111.

[0043] The structure of the lower air-blowing fixture 11 is similar to that of the turnover fixture 2, except that the lower air-blowing fixture 11 has more holes than the turnover fixture 2; while the upper air-blowing fixture 12 is shaped to fit the main body 111. Therefore, when the upper air-blowing fixture 12 covers the lower air-blowing fixture 11, the limiting part 112 can be used to make the upper air-blowing fixture 12 and the main body 111 aligned and covered, ensuring that the holes correspond one-to-one.

[0044] Furthermore, the holes in the upper air-blowing fixture 12 and the lower air-blowing fixture 11 are both through holes; the holes in the upper air-blowing fixture 12 and the lower air-blowing fixture 11 cooperate to form acupoints for accommodating and limiting the micro-parts 10.

[0045] In this embodiment, the air blowing step is achieved by clamping and fixing the micro-part 10 with the upper air blowing fixture 12 and the lower air blowing fixture 11, and then blowing air from both sides of the micro-part 10 using the air blowing gun 13. During this process, the upper air blowing fixture 12 and the lower air blowing fixture 11 each have a hole, which can be a "T"-shaped structure. The larger inner diameter of the hole accommodates the micro-part 10, while the smaller inner diameter limits its movement. This allows the air blowing gun 13 to fold the micro-part 10 through the hole and blow air, cleaning debris from the surface of the micro-part 10 and removing any remaining punching residue that has not yet detached from the micro-part 10.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. 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 invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A rapid punching and tray-loading process for MIM micro-parts, characterized in that, Includes the following steps: S100. After removing the miniature part from the molding equipment, flip it over and then transfer it to the moving fixture; S200. Place ceramic pieces and a punching fixture sequentially in the turnover fixture; S300. The moving fixture containing the micro-parts is inverted onto the swivel plate fixture so that the micro-parts inside the moving fixture enter the punching fixture. S400. After removing the stacked ceramic sheets and punching fixture from the rotating shaft fixture, place them into the punching equipment; S500. Using a punching machine to punch micro-parts in a punching fixture; S600. Remove the stacked ceramic sheets and punching fixture from the punching equipment, and then install the material holding fixture onto the end of the punching fixture away from the ceramic sheets; S700. The stacked ceramic sheets, punching fixture, and material container are flipped over, and then the micro-parts inside the punching fixture fall into the material container. S800. Perform air blowing treatment on the micro parts inside the material container fixture.

2. The rapid punching and tray-loading process for MIM micro-parts according to claim 1, characterized in that, Step S100 specifically includes: S110. Place a guide fixture on the receiving fixture, and make the holes on the receiving fixture correspond one-to-one with the holes on the guide fixture. S120. A robotic arm is used to place miniature parts into a guide fixture and a receiving fixture; S130. A movable fixture is stacked at the end of the guide fixture away from the receiving fixture, and the holes of the movable fixture are connected to the holes of the guide fixture one by one. S140. Rotate the stacked receiving fixture, guide fixture and moving fixture together by 180° so that the micro parts fall completely into the moving fixture; S150. Sequentially and vertically remove the receiving fixture and the guide fixture.

3. The rapid punching and tray-loading process for MIM micro-parts according to claim 2, characterized in that, Between steps S120 and S130, the method further includes: shaking the stacked receiving fixture and guide fixture.

4. The rapid punching and tray-loading process for MIM micro-parts according to claim 1, characterized in that, In step S200, when the ceramic sheet and the punching fixture are stacked, the ceramic sheet covers one end of all the holes in the punching fixture.

5. The rapid punching and tray-loading process for MIM micro-parts according to claim 1, characterized in that, Step S400 specifically includes: S410. Pull the lower die of the punching equipment out of the punching equipment; S420. After removing the stacked ceramic sheets and punching fixture from the rotating shaft fixture, place them into the lower mold; S430. Use the pin to pass through the punching fixture, ceramic sheet and lower die in sequence; S440. Reset the lower die into the punching equipment.

6. The rapid punching and tray-loading process for MIM micro-parts according to claim 1, characterized in that, Step S500 specifically includes: S510. Using a punching machine to punch micro parts; S520. Air blowing treatment is applied to the punching fixture; S530. Use a punching machine to punch the micro parts again; S540. Air blowing treatment is applied to the punching fixture.

7. The rapid punching and tray-loading process for MIM micro-parts according to claim 1, characterized in that, Step S700 specifically includes: S710. Flip over the stacked ceramic sheets, punching fixture, and material container fixture; S720. Remove the ceramic sheet from the punching fixture in a direction perpendicular to the end face of the punching fixture; S730. A punching fixture is struck to allow the miniature parts inside the punching fixture to fall into the material container; S740. Remove the punching fixture from the material container fixture in a direction perpendicular to the end face of the material container fixture.

8. The rapid punching and sloshing process for MIM micro-parts according to claim 1, characterized in that, Step S800 specifically includes: S810. Transfer the micro-parts in the material container fixture to the air-blowing lower fixture; S820. Cover the upper air-blowing fixture with the lower air-blowing fixture, and make the holes of the upper air-blowing fixture correspond and connect with the holes of the lower air-blowing fixture one by one. S830. Inflate a micro-part at one end of an air-blowing fixture; S840. A micro-part is blown with air at one end of an air-blowing fixture; S850. Remove the upper air-blowing fixture from the lower air-blowing fixture, and then cover the container fixture onto the lower air-blowing fixture; S860. Rotate the covered air-blowing lower fixture and the container fixture together by 180°, and then remove the air-blowing lower fixture from the container fixture.

9. The rapid punching and sloshing process for MIM micro parts according to claim 8, characterized in that, The air-blowing lower fixture includes a main body and a limiting part disposed on the side wall of the main body. The thickness of the limiting part is greater than the thickness of the main body. The limiting part is used to limit and align the material container / air-blowing upper fixture that covers the main body. The hole of the air-blowing lower fixture is disposed in the main body.

10. The rapid punching and sloshing process for MIM micro-parts according to claim 8, characterized in that, The holes in the upper and lower air-blowing fixtures are both through holes; the holes in the upper and lower air-blowing fixtures cooperate to form acupoints for accommodating and limiting the micro-parts.

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