Fixture

Abstract

The present invention relates to a correction jig, comprising: a correction mechanism, wherein the correction mechanism comprises a correction piece, a positioning piece connected to the correction piece, wherein the free end of the positioning piece is adapted to the shape of a part to be processed; a first hole is provided in the thickness direction of the correction piece; a jig substrate, wherein the second hole is provided in the thickness direction of the jig substrate, and a third hole for the positioning piece to pass through; and a limiting guide post, wherein the limiting guide post passes through the second hole and the first hole in sequence to limit the position of the correction bar relative to the jig substrate. The correction jig of the present invention drives the correction bar to move by the limiting guide post, thereby driving the movement of the correction piece relative to the jig substrate, and finally realizing the movement of the positioning piece relative to the jig substrate, thereby affecting the position of the FPC board relative to the jig substrate, and finally realizing the relative position accuracy of the front and back components of the FPC board.

Description

Technical Field

[0001] This invention relates to the field of FPC technology, and in particular to a corrective fixture. Background Technology

[0002] FPC, or Flexible Printed Circuit Board, is a highly reliable and extremely flexible printed circuit board made with polyimide or polyester film as the substrate. It is characterized by high wiring density, light weight, and thinness.

[0003] When mounting ANT components on an FPC board, the accuracy of the FPC board's position is crucial, as it affects the quality of the product. Currently, no structure on the market can meet this requirement, so there is an urgent need for a structure that can correct the FPC position to meet the accuracy requirements. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem of insufficient accuracy of FPC position in the prior art, and to provide a correction fixture that can correct the position of FPC board.

[0005] To solve the above-mentioned technical problems, the present invention provides a corrective fixture, comprising,

[0006] Alignment mechanism, comprising an alignment component and a positioning component connected to the alignment component, wherein the free end of the positioning component is adapted to the shape of the part to be processed; the alignment component has a first hole in the thickness direction;

[0007] A fixture substrate, wherein the fixture substrate has a second hole in the thickness direction and a third hole for the positioning member to pass through;

[0008] A limiting guide post passes through the second hole and the first hole in sequence to limit the position of the alignment strip relative to the fixture substrate.

[0009] In one embodiment of the present invention, the alignment component includes a first alignment strip and a second alignment strip, the first and second alignment strips are stacked, the first alignment strip is provided with a first positioning element, the second alignment strip is provided with a second positioning element, the first alignment strip is provided with a hole for the second positioning element to pass through, and the first positioning element and the second positioning element cooperate to drive the workpiece to be processed to perform alignment movement.

[0010] In one embodiment of the present invention, the first hole is provided on the same side of the first and second alignment bars. When the limiting guide post passes through the first hole of the first alignment bar and the second alignment bar in sequence, the limiting guide post drives the first and second alignment bars to move in alignment until the first hole on the first and second alignment bars is coaxial.

[0011] In one embodiment of the present invention, the first positioning member and the second positioning member are arranged in a one-to-one correspondence, and the first and second positioning members of each group are provided with grooves on opposite sides that are adapted to the parts to be processed.

[0012] In one embodiment of the present invention, the two ends of the alignment bar are disposed at the bottom of the fixture substrate by alignment blocks, the alignment blocks are provided with blind grooves to accommodate the ends of the alignment bar, and the alignment bar moves between the blind grooves at both ends for alignment.

[0013] In one embodiment of the present invention, the alignment mechanism further includes an alignment reset member, which resets the alignment bar.

[0014] In one embodiment of the present invention, the alignment member comprises two sets and is located on both sides of the longitudinal direction of the fixture substrate.

[0015] In one embodiment of the present invention, a cover plate is further included, and the limiting guide post is disposed on the cover plate.

[0016] In one embodiment of the present invention, an auxiliary support device is further included. The auxiliary support device includes a support platform and a movable platform connected to the support platform. The movable platform is movable relative to the support platform. The limiting guide post is disposed on the support platform. The movable platform is provided with a fourth hole through which the limiting guide post passes.

[0017] In one embodiment of the present invention, the fourth hole is also for the alignment member to pass through, and the moving platform is further provided with a preliminary positioning mechanism, which restricts the displacement of the fixture substrate.

[0018] The technical solution of the present invention has the following advantages compared with the prior art:

[0019] 1. The corrective fixture of the present invention drives the alignment bar to move through the limiting guide post, thereby driving the alignment component to move relative to the fixture base plate, and finally realizing the movement of the positioning component relative to the fixture base plate, thereby affecting the position of the FPC board relative to the fixture base plate, and ultimately achieving the relative positional accuracy of the front and back components of the FPC board.

[0020] 2. The alignment motion of the present invention only requires one action of the limiting guide post to complete the alignment. Attached Figure Description

[0021] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0022] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention.

[0023] Figure 2 Is it like this? Figure 1 A partial structural diagram of the corrective fixture is shown.

[0024] Figure 3 Is it like this? Figure 1 A schematic diagram of the alignment mechanism in the correction fixture shown.

[0025] Figure 4 Is it like this? Figure 1 The diagram shown is a top-view schematic of the alignment mechanism in the corrective fixture.

[0026] Figure 5 Is it like this? Figure 1 A top-view schematic diagram of the alignment mechanism in the correction fixture shown.

[0027] Figure 6 Is it like this? Figure 1 The diagram shows the structure of the cover plate portion of the corrective fixture.

[0028] Figure 7 Is it like this? Figure 1 The diagram shows a bottom view of the corrective fixture.

[0029] Figure 8 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention.

[0030] Figure 9 Is it like this? Figure 8 A partial structural diagram of the corrective fixture is shown.

[0031] Figure 10 Is it like this? Figure 8 The diagram shown is a structural schematic of the correction fixture, which includes an auxiliary support device.

[0032] Figure 11 Is it like this? Figure 8 A schematic diagram of the support platform in the aforementioned correction fixture.

[0033] Explanation of reference numerals in the accompanying drawings: 1. Fixture base plate; 2. Alignment mechanism; 21. Positioning element; 211. First positioning element; 212. Second positioning element; 22. Alignment bar; 221. First alignment bar; 222. Second alignment bar; 23. Alignment block; 231. Alignment bar receiving groove; 232. Reset groove; 3. Cover plate; 4. Part placement groove; 5. Positioning pin; 6. Clearance groove; 7. Pick-up hole; 8. Limiting guide post; 9. Locking element; 91. Handheld end; 92. Limiting end; 10. Pressing element; 11. Control guide post; 12. Through groove; 13. Limiting part; 14. Auxiliary support device; 141. Support platform; 142. Moving platform; 143. Moving guide post; 144. Horizontal limiting element; 145. Vertical limiting element. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0035] Example 1

[0036] Reference Figure 1-7 As shown, a corrective fixture of the present invention includes a fixture base plate 1, a straightening mechanism 2, and a cover plate 3. The fixture base plate 1 has a relatively thin cubic structure. A part placement groove 4 for placing FPC parts to be processed is provided on the upper surface of the fixture base plate 1. Positioning pins 5 are provided at the four corners of the part placement groove 4 to position the FPC parts to be processed. Several clearance grooves 6 are also provided within the covered area of ​​the part placement groove 4 to accommodate SIP elements on the lower surface of the FPC parts to be processed. Retrieval holes 7 are also provided on both lateral sides of the part placement groove 4 (in this embodiment, the lateral direction is from one short side to the other short side of the upper or lower surface of the fixture base plate 1, and the longitudinal direction is from one long side to the other long side) to facilitate the retrieval of the fixture base plate 1. Therefore, a circular hole is provided at one corner of the fixture base plate 1 to distinguish the orientation of the fixture base plate. A groove for placing an identification code is provided at the other corner of the fixture base plate 1 (preferably diagonally opposite to the corner where the circular hole is located). The identification code facilitates quick replacement of the fixture base plate 1 when it is damaged. Preferably, the identification code can be a QR code. The fixture substrate 1 is also provided with several heat dissipation holes.

[0037] The alignment mechanism 2 includes a positioning member 21 and an alignment member 22. The two ends of the alignment member 22 are disposed at the bottom of the fixture base plate 1 via alignment blocks 23. The alignment blocks 23 are fixed to the bottom surface of the fixture base plate 1, and there is a predetermined distance between the two ends of the alignment blocks 23. The alignment member 22 can move between the two ends of the alignment blocks 23 to change its position relative to the fixture base plate 1 (the moving distance is about 0-1mm depending on the accuracy). To further achieve corrective movement in the relative two-end directions, in this embodiment, the adjusting member 22 includes a first adjusting strip 221 and a second adjusting strip 222, which are placed vertically (i.e., stacked). The adjusting block 23 is provided with adjusting strip receiving grooves 231 to accommodate the two ends of the first and second adjusting strips. The adjusting block 23 at the right end is also provided with a first adjusting strip reset member, and the adjusting block at the left end is also provided with a second adjusting strip reset member. In this embodiment, preferably, a reset groove 232 can be further opened inward on the adjusting strip receiving groove 231 on the adjusting block 23 to place the reset member. The reset member can preferably be a spring or other mechanism with elastic properties. In this embodiment, the first adjusting strip 221 is located above the second adjusting strip 222 (it should be noted that the second adjusting strip 222 can also be located above). Preferably, the width of the second adjusting strip 222 is greater than the width of the first adjusting strip 221 to avoid interference. The first alignment bar 221 is provided with a first positioning element 211, and the second alignment bar 22 is provided with a second positioning element 212. The first alignment bar 221 is provided with a hole for the second positioning element 212 on the second alignment bar 222 to pass through. The first positioning element 211 and the second positioning element 212 are arranged in a one-to-one correspondence. In this embodiment, preferably, both the first and second alignment bars include five positioning elements, which are arranged in a one-to-one correspondence. Each group of the first and second positioning elements has a groove on the opposite side that corresponds to the SIP element on the bottom surface of the FPC part to be processed. In this embodiment, the fixture substrate 1 is provided with a corresponding position for the first and second positioning elements to pass through. The third hole is through which the top ends of the first and second positioning members pass, located on the fixture substrate 1 and at a predetermined distance from the upper surface of the fixture substrate 1. The free end shapes of the first and second positioning members are adapted to the shape of the SIP elements distributed on the bottom surface of the FPC processing part. That is, the height of the first positioning member 211 on the first alignment bar 221 is higher than that of the second positioning member 212 on the second alignment bar 222, so as to ensure that the top of the first positioning member 211 on the first alignment bar 221 and the top of the second positioning member 212 on the second alignment bar 222 are at the same horizontal height. The first and second alignment bars are also provided with L-shaped grooves to distinguish the direction of the alignment bars. In order to further improve the correction accuracy, in this embodiment, two sets of alignment members 22 are provided and are longitudinally distributed at the bottom of the fixture substrate 1 (it should be noted that the two sets are in opposite directions, i.e., set in reverse).

[0038] The cover plate 3 is a thin cubic structure with holes (preferably, it includes one large hole and eight small holes, the area of ​​the large hole is about one-third of the cover plate, located in the middle of the cover plate 3 and similar in shape to the cover plate 3, and the eight small holes are arranged on both sides of the large hole) to facilitate heat dissipation and the measurement of data on the FPC parts to be processed by the vision system. One corner of the cover plate 3 is provided with an identification code and an identification holder for placing the identification code, which sinks to the bottom of the cover plate 3 through a hole, allowing for quick replacement based on the identification code if the cover plate 3 is damaged. Similarly, a QR code is preferred. The cover plate 3 is provided with limiting guide posts 8. The first and second alignment bars have a first hole in their thickness direction, and the fixture base plate 1 has a second hole in its thickness direction. The limiting guide posts 8 pass through the second hole and the first hole in sequence to limit the position of the first and second alignment bars relative to the fixture base plate 1. In this embodiment, each set of alignment members 22 corresponds to one limiting guide post 8, that is, there are two limiting guide posts 8, which are arranged diagonally opposite each other. It should be noted that, in order to improve the accuracy of the limit, other limit guide posts can be added to the alignment member 22 (the holes are only shown on the alignment strip in the figure, and the guide posts are not shown). It should also be noted that the first hole can be set at both ends of each set of alignment members 22 (that is, each set of alignment members 22 corresponds to two limit guide posts 8).

[0039] The cover plate 3 is provided with locking members 9 for locking the relative position of the cover plate 3 and the fixture base plate 1. The locking members 9 include two, and are respectively located on the lateral sides of the cover plate 3. The locking member 9 is configured as a press-locking member. The locking member 9 includes a handheld end 91, a limiting end 92, and a guide post. The guide post passes through the cover plate 3 along its thickness direction. The handheld end 91 and the limiting end 92 are respectively connected to the two ends of the guide post. The handheld end 91 is located on the side of the cover plate 3 facing away from the fixture base plate 1 (i.e., the upper surface). There is a predetermined distance between the handheld end 91 and the upper surface of the cover plate 3. An elastic reset member (preferably, a spring can be used in this embodiment, with the spring sleeved on the guide post) is connected between the handheld end 91 and the cover plate 3. The fixture base plate 1 has a hole through which the limiting end 92 passes. The fixture base plate 1 has a through groove 12 through which the limiting end 92 passes. The through groove 12 has a limiting part 13 that restricts the reset of the limiting end 92.

[0040] The cover plate 3 is also provided with a pressing member 10 for pressing the parts to be processed. The pressing member 10 can press the FPC parts to be processed and steel sheets. The pressing member 10 includes an outer sleeve, an elastic member, and a pressing part. One end of the outer sleeve is open and fixed to the cover plate. The opening of the outer sleeve faces the fixture base plate 1. The elastic member and the pressing part are disposed inside the outer sleeve. The elastic member pushes the top of the pressing part out of the outer sleeve, keeping the pressing part in a normally open state. The outer sleeve is provided with a blocking member to prevent the elastic member from completely pushing out the pressing part. In order to limit the distance between the cover plate 3 and the fixture base plate 1, control guide posts 11 are also provided at the four corners of the cover plate 3. The fixture base plate 1 is provided with matching holes. The end of the guide post near the cover plate 3 is larger (i.e., the control end). The hole on the fixture base plate 1 can only accommodate the other end of the control guide post 11 to pass through. That is, the distance between the cover plate 3 and the fixture base plate 1 is limited by the size of the control end.

[0041] The lower surface of the fixture substrate 1 is also provided with several slots for placing magnets, so that the steel sheet can be firmly placed on the FPC part to be processed. In this embodiment, since the FPC is pressed with a steel sheet, the slots for placing magnets are provided. For pressing the FPC, adhesive tape can also be used.

[0042] The working principle of this invention is as follows: The FPC part to be processed is placed in the part placement groove 4 of the fixture substrate 1 and initially positioned by the positioning pin 5. At this time, the SIP part of the lower surface of the FPC part to be processed is basically matched and positioned with the positioning part on each set of alignment parts 22. The remaining parts on the lower surface are distributed in the clearance groove 6. At this time, the steel sheet is placed on the FPC part to be processed and the FPC part to be processed is firmly pressed by the magnet. Then, the ANT element is printed by soldering. After the ANT element is printed, the cover plate 3 begins to press down. At this time, the limiting guide post 8 passes through the second hole and the first hole in sequence. Under the action of the limiting guide post 8, the first and second alignment bars move relative to each other until the first hole on the first and second alignment bars is coaxial (that is, the limiting guide post 8 can pass through the two holes at the same time). At this time, the first and second positioning parts adjust the position of the FPC part so that the relative position of the ANT element and SIP element on the front and back of the FPC part to be processed reaches high precision. During the movement, the pressing part 10 presses down the ANT element printed on the upper surface of the FPC. Finally, press down the locking member 9 to allow the limiting end 92 to pass through the through slot 12 of the fixture base plate 1. Then rotate the locking member 9 so that the limiting end 92 is restricted by the limiting part 13 and cannot return to its original position. At this time, the cover plate 3 is locked to the fixture base plate 1. Finally, the entire component enters reflow soldering for welding. Remove the FPC and reset all mechanisms.

[0043] Example 2

[0044] In the above embodiment, the limiting guide post 8 is disposed on the cover plate 3. That is, when the correction movement is performed, the position of the straightening mechanism 2 is relatively fixed, and the limiting guide post 8 is activated.

[0045] Reference Figure 8-11 As shown, in this embodiment, a correction fixture is provided in which the position of the limiting guide post 8 is relatively fixed and the alignment mechanism 2 generates an action. Compared with the above embodiment, the correction accuracy is further improved and the stability is higher.

[0046] The corrective fixture further includes an auxiliary support device 14, which includes a support platform 141 and a movable platform 142 connected to the support platform 141. The limiting guide post 8 is disposed on the support platform 141, and the support platform 141 is also provided with a movable guide post 143. The movable platform 142 moves up and down relative to the support platform 141 along the movable guide post 143. Preferably, in this embodiment, there are six movable guide posts 143, four of which are located at the four corners of the support platform 141, and the remaining two are located at the middle of the longer side of the support platform 141. The support platform 141 is also provided with holes through which the locking member 9 and the control guide post 11 pass.

[0047] The moving platform 142 is provided with a fourth hole through which the limiting guide post 8 passes. In this embodiment, the size of the fourth hole is such that the entire alignment mechanism 2 passes through so that the fixture base plate 1 can be placed on the moving platform 142. The moving platform 142 is also provided with a preliminary positioning mechanism, which includes a horizontal limiting member 144 and a vertical limiting member 145. The horizontal limiting member 144 and the vertical limiting member 145 are both provided on the upper surface of the moving platform 142. The moving platform 142 is also provided with holes through which the locking member 9 and the control guide post 11 pass.

[0048] In this embodiment, when a corrective movement is required, the fixture base plate 1 is first placed on the moving platform 142. The horizontal limiting member 144 and the vertical limiting member 145 perform initial positioning of the fixture base plate. Subsequently, the entire moving platform 142 moves toward the support platform 141, and the limiting guide post 8 performs a corrective movement. The rest of the process is similar to that in Embodiment 1 above, and will not be described in detail here.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A correction jig, characterized in that: include, A correction mechanism, the correction mechanism comprising a correction piece and a positioning piece connected to the correction piece, wherein the free end of the positioning piece is adapted to the shape of the part to be processed; a first hole is provided in the thickness direction of the correction piece; A fixture substrate, wherein a second hole and a third hole for the positioning member to pass through are provided in the thickness direction of the fixture substrate; A limiting guide post, the limiting guide post passes through the second hole and the first hole in sequence to limit the position of the adjusting member relative to the fixture substrate; The straightening member includes a first straightening bar and a second straightening bar, the first and second straightening bars are stacked, the first straightening bar is provided with a first positioning member, the second straightening bar is provided with a second positioning member, the first straightening bar is provided with a hole for the second positioning member to pass through, and the first positioning member and the second positioning member cooperate to drive the part to be processed to perform a straightening movement.

2. A correction jig according to claim 1, characterized in that: The first hole is provided on the same side of the first and second alignment strips. When the limiting guide column passes through the first holes of the first and second alignment strips in sequence, the limiting guide column drives the first and second alignment strips to align until the first holes on the first and second alignment strips are coaxial.

3. A correction jig according to claim 2, characterized in that: The first positioning members and the second positioning members are arranged in one-to-one correspondence, and the first and second positioning members of each group are provided with grooves adapted to the parts to be processed on the opposite sides thereof.

4. A correction jig according to claim 1, characterized in that: The two ends of the correction piece are arranged at the bottom of the fixture base plate through a correction block. The correction block is provided with a blind groove for accommodating the end of the correction bar. The correction bar moves between the blind grooves at the two ends for correction.

5. A correction jig according to claim 1, characterized in that: The correction mechanism also includes a correction reset member, which resets the correction bar.

6. A correction jig according to any one of claims 1 to 5, characterized in that: The adjusting parts include two groups and are respectively located on two longitudinal sides of the fixture base plate.

7. A correction jig according to any one of claims 1 to 5, characterized in that: It also includes a cover plate, and the limiting guide column is arranged on the cover plate.

8. A correction jig according to any one of claims 1 to 5, characterized in that: It also includes an auxiliary support device, which includes a support platform and a mobile platform connected to the support platform, the mobile platform can move relative to the support platform, the limiting guide column is arranged on the support platform, and the mobile platform is provided with a fourth hole for the limiting guide column to pass through.

9. A correction jig according to claim 8, characterized in that: The fourth hole is also used for the adjusting member to pass through. The movable platform is also provided with a preliminary positioning mechanism, and the preliminary positioning mechanism limits the displacement of the fixture substrate.

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