Cap pulling jig

Abstract

The utility model relates to the technical field of SMT (Surface Mount Technology), and discloses a cap pulling jig which comprises a box body and a pressing plate, and the box body is provided with a first through hole; the pressing plate is arranged in the box body in a penetrating mode, the pressing plate is connected with the box body in a sliding mode, a check block is arranged on the pressing plate, the pressing plate can slide in the box body in the first direction so that the check block can at least partially shield the first through hole, and the pressing plate can slide in the box body in the second direction so that the check block can move in the direction away from or close to the first through hole. And time and labor are saved when the rubber cap of the ejector pin is rapidly pulled out, and the working efficiency of equipment in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of SMT patch technology, in particular to a capping fixture. Background Art

[0002] SMT is surface mount technology, which is a series of process flows based on printed circuit boards (PCBs). The surface mount technology (SMT) process of flexible circuit boards mainly includes three basic steps: solder paste printing, mounting and reflow soldering.

[0003] When mounting components, the ejector pins are attached to a soldering pad in groups of two. Accuracy must be ensured, and the spacing and parallelism between the two pins must be consistent. Currently, two ejector pins are fixed with rubber caps, and the two adjacent ejector pins are positioned using the rubber caps. They are then fixed in order on the components of the PCB board, and finally the rubber caps are removed. The manual removal process is time-consuming and labor-intensive. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a cap removing jig.

[0005] The utility model is implemented by the following technical scheme: a capping jig, comprising a box body, the box body being provided with a first through hole; a pressing plate, the pressing plate being passed through the box body and being slidably connected to the box body, a stopper being arranged on the pressing plate, the pressing plate being able to slide in a first direction within the box body so that the stopper at least partially blocks the first through hole, and the pressing plate being able to slide in a second direction within the box body so that the stopper moves in a direction away from or close to the first through hole.

[0006] Optionally, the box body includes a cover plate and a shell, the cover plate is detachably connected to the shell and forms a accommodating cavity, the first through hole is arranged on the cover plate, both sides of the shell have notches connected to the accommodating cavity, and the pressure plate passes through the accommodating cavity and the notch.

[0007] Optionally, the first through holes are provided in a plurality and are arranged in an array on the cover plate.

[0008] Optionally, the blocking block includes a connecting portion and a resisting portion, the connecting portion is connected to the pressing plate, the resisting portion is connected to the connecting portion, and the resisting portion can partially block two adjacent first through holes.

[0009] Optionally, a second through hole is provided on the pressing plate, and the connecting portion is located beside the second through hole.

[0010] Optionally, the second through holes are provided in a plurality and are arranged in an array on the pressing plate, and at least one connecting portion is provided next to each of the second through holes.

[0011] Optionally, an elastic structure is provided between the bottom of the shell and the pressing plate.

[0012] Optionally, a avoidance opening is provided on the cover plate.

[0013] Optionally, a positioning column is provided on the cover plate.

[0014] Optionally, the pressing plate and the box body are detachably connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model inserts two ejector pins into the fixing holes of the rubber cap, one of which extends outward, so that the two ejector pins are parallel to each other, so that every two ejector pins are divided into a group, when the patch is installed, the mechanical arm of the equipment directly absorbs the rubber cap, and places the two extended ejector pin parts on the welding pad for welding, and after the welding is completed, the rubber cap at the other end is pulled out from the ejector pin. At this time, one end of the rubber cap extends into the first through hole, and the pressing plate is horizontally moved along the first direction so that the stopper is located between the rubber cap and the first through hole, and then the pressing plate is moved along the second direction to drive the stopper to gradually approach the end of the rubber cap and abut against it, so that the rubber cap is separated from the ejector pin under the squeezing of the stopper, and the rubber cap is quickly pulled out, which saves time and labor and improves the working efficiency of the equipment when it is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the capping fixture of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the capping fixture of the utility model from another perspective;

[0019] Figure 3 It is a structural schematic diagram of the pressing plate of the utility model;

[0020] Figure 4 for Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0021] Figure 5 This is a schematic diagram of the utility model after the middle pressure plate is moved;

[0022] Figure 6 for Figure 5 A local enlarged schematic diagram of the middle A;

[0023] Figure 7 It is a schematic diagram of the middle pressure plate of the utility model in the initial position;

[0024] Figure 8 Figure 7 A local enlarged schematic diagram at B;

[0025] Fig. 9 It is a cross-sectional schematic diagram of the rubber cap in the capping fixture of the utility model.

[0026] Description of main symbols:

[0027] 1. Box body; 2. Pressing plate; 3. First through hole; 11. Cover plate; 12. Shell; 13. Accommodating cavity; 14. Notch; 15. Avoidance opening; 4. Stopper; 41. Connecting part; 42. Stopping part; 5. Second through hole; 6. Positioning column; 7. Spring column; 8. Rubber cap; 9. Ejector pin; 10. PCB board. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0029] Please combine Figure 1-9 As shown, a capping jig of this embodiment includes a box body 1, a first through hole 3 is opened on the box body 1, a pressing plate 2 is penetrated through the box body 1, and the pressing plate 2 is slidably connected to the box body 1, a stopper 4 is arranged on the pressing plate 2, the pressing plate 2 can slide along the first direction in the box body 1, so that the stopper 4 at least partially blocks the first through hole 3, and the pressing plate 2 can slide along the second direction in the box body 1, so that the stopper 4 moves away from or close to the first through hole 3. Wherein, taking space as a coordinate system, the first direction is the horizontal direction, i.e., the X-axis direction or the Y-axis direction, and the second direction is the vertical direction, i.e., the Z-axis direction. In this embodiment, the moving direction of the pressing plate 2 has a sequence, first moving along the first direction Y-axis to a position, and then moving along the second direction Z-axis. To return to reset, first move along the second direction, and then move along the first direction to complete the reset action.

[0030] Two ejector pins are inserted into the fixing holes of the rubber cap, and one of them extends outward so that the two ejector pins are parallel to each other. In this way, every two ejector pins are grouped together. When the patch is installed, the mechanical arm of the equipment directly absorbs the rubber cap and places the two extended ejector pin parts on the soldering pad for welding. After welding is completed, the rubber cap at the other end is pulled out from the ejector pin. At this time, one end with the rubber cap extends into the first through hole 3, and the pressing plate 2 is horizontally moved along the first direction so that the stopper 4 is located between the rubber cap and the first through hole 3. The pressing plate 2 is then moved along the second direction to drive the stopper 4 to gradually approach the end of the rubber cap and abut against it. The rubber cap is separated from the ejector pin under the squeezing of the stopper 4, and the rubber cap is quickly removed, which saves time and effort and improves the working efficiency of the equipment when it is in use.

[0031] like Figure 1-2As shown, the box body 1 is made of metal aluminum alloy, and the box body 1 includes a cover plate 11 and a shell 12. The cover plate 11 and the shell 12 are detachably connected to form a receiving cavity 13. The first through hole 3 is set on the cover plate 11. The two sides of the shell 12 have notches 14 connected to the receiving cavity 13, and the pressing plate 2 passes through the receiving cavity 13 and the notch 14. The shell 12 is used to collect the rubber caps that have been removed and removed, so as to facilitate centralized processing; the cover plate 11 can be detachably connected to the shell 12, and the cover plate 11 can be opened to pour out the rubber caps, and the first through hole 3 on the cover plate 11 can be customized and replaced according to different PCB board specifications; the two ends of the pressing plate 2 pass through the notches 14 on both sides to provide force points, and people can hold them with their hands to move the pressing plate 2 and press down the pressing plate 2.

[0032] An elastic structure is provided between the bottom of the housing 12 and the pressing plate 2. An elastic structure is provided between the bottom of the housing 12 and the pressing plate 2, specifically a spring column 7. After the pressing plate 2 is pressed down in the second direction, the stopper 4 removes the rubber cap, and the elastic force of the spring can automatically reset, and then move to the initial position in the first direction, which can save effort.

[0033] Specifically, the number of first through holes 3 is set to be several, and they are arranged in an array on the cover plate 11. The cover plate 11 is provided with several first through holes 3 in an array, and a cap removal area is formed in a concentrated manner. When the PCB board is placed on the cover plate 11, all the rubber caps welded on its surface can enter the first through holes 3, so that all of them can be removed at one time.

[0034] More specifically, the cover plate 11 is further provided with an avoidance opening 15, which is arranged adjacent to the first through hole 3 area on the cover plate 11. In order to increase the welding rate, two PCB boards are placed on a carrier, one positive and one negative. Since there are two boards on the carrier, after the ejector pin is welded, one of the boards does not need to have its rubber cap removed or has already been removed, so when the carrier is inverted on the cover plate 11, one of the boards needs to be avoided. The avoidance opening 15 allows the components on the PCB board in this area to extend into the box body 1 without interference.

[0035] In addition, when the carrier is inverted on the cover 11, it needs to be fixed and positioned. A positioning column 6 is provided on the cover 11. The positioning column 6 is divided into two groups, and there are four groups respectively, which are distributed in the four corner areas of the cover 11 to position the carrier so that the ejector pin of the PCB board can be just aligned with the first through hole 3.

[0036] like Figure 3-9As shown, the block 4 includes a connecting portion 41 and a resisting portion 42. The connecting portion 41 is connected to the pressure plate 2, and the resisting portion 42 is connected to the connecting portion 41. The resisting portion 42 can partially block two adjacent first through holes 3. The first through holes 3 are distributed in an array, and the connecting portion 41 is fixed between adjacent first through holes 3. The other end of the connecting portion 41 is connected to the resisting portion 42. The cross section of the resisting portion 42 is larger than the cross section of the connecting portion 41, so that the resisting portion 42 can simultaneously block two adjacent first through holes 3, with a compact structure and high utilization rate. The resisting portion 42 is used to abut against the end of the rubber cap. In each first through hole 3, the rubber cap is abutted by two resisting portions 42, so that the force is balanced when the rubber cap is removed, and the removal is smoother without causing damage to the ejector pin.

[0037] Furthermore, the pressing plate 2 is provided with a second through hole 5, and the connecting portion 41 is located beside the second through hole 5. The second through hole 5 is connected to the accommodating cavity 13, and the rubber cap can be inserted into the second through hole 5, and can enter the accommodating cavity 13 of the box body 1 when it is removed.

[0038] Furthermore, the number of the second through holes 5 is set to be several, and they are arranged in an array on the pressing plate 2, and at least one connecting portion 41 is arranged next to each second through hole 5. The number of the second through holes 5 is adapted to the first through holes 3, and the connecting portion 41 is arranged on the second through holes 5. In the initial position, the first through hole 3 and the second through hole 5 are partially overlapped and connected. At this time, the stopper 4 is partially blocked by the cover plate 11, and the caliber of the first through hole 3 is the largest. When the rubber cap is inserted and ready to be removed, the pressing plate 2 is moved horizontally, and the stopper 4 is moved to the position of the rubber cap, and then the pressing plate 2 is moved along the second direction, and the stopper 4 abuts against the rubber cap to remove it from the ejector pin, and the rubber cap enters the accommodating cavity 13 of the box body 1 through the second through hole 5 with gravity, and is collected and processed.

[0039] The pressing plate 2 is detachably connected to the box body 1. The pressing plate 2 can also be customized according to the specifications of different PCBs and the distribution of the plastic caps welded thereon, and can be disassembled and replaced according to actual needs later, with wide adaptability.

[0040] The implementation principle of a capping fixture in the embodiment of the present application is as follows: two PCB boards are fixed on the carrier, one facing up and the other facing down, one of which has a newly welded ejector pin, the PCB board is inverted on the cover plate 11, the carrier is positioned by the positioning column 6, the end with the rubber cap extends into the first through hole 3 and the second through hole 5, and the components on the other PCB board extend into the avoidance opening 15. At the initial position, the block 4 is located between the adjacent first through holes 3, and the pressing plate 2 begins to move horizontally downward, the block 4 partially blocks the first through hole 3 and is aligned with the end of the rubber cap, and then the pressing plate 2 is pressed downward in the vertical direction, the stopper 42 of the block 4 gradually approaches the end of the rubber cap and squeezes, the rubber cap is pulled off the ejector pin, and the detached rubber cap enters the accommodating cavity 13 of the box body 1 from the second through hole 5, is collected and processed, and then the pressing plate 2 is reset in the vertical direction under the elastic force of the spring, and then the pressing plate 2 is manually moved horizontally back to the initial position to prepare for the next capping action.

[0041] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A capping jig, characterized in that: include: A box body, wherein the box body is provided with a first through hole; A pressure plate, wherein the pressure plate passes through the box body and is slidably connected to the box body, a stopper is provided on the pressure plate, the pressure plate can slide in a first direction within the box body so that the stopper at least partially blocks the first through hole, and the pressure plate can slide in a second direction within the box body so that the stopper moves away from or close to the first through hole.

2. The capping jig according to claim 1, characterized in that: The box body includes a cover plate and a shell, the cover plate is detachably connected to the shell and forms a accommodating cavity, the first through hole is arranged on the cover plate, both sides of the shell have notches connected to the accommodating cavity, and the pressing plate passes through the accommodating cavity and the notches.

3. The cap removal jig according to claim 2, characterized in that: The first through holes are provided in a plurality and arranged in an array on the cover plate.

4. The cap removal jig according to any one of claims 1 to 3, characterized in that: The blocking block includes a connecting portion and a resisting portion, wherein the connecting portion is connected to the pressing plate, and the resisting portion is connected to the connecting portion, and the resisting portion can partially block two adjacent first through holes.

5. The cap removal jig according to claim 4, characterized in that: The pressing plate is provided with a second through hole, and the connecting portion is located beside the second through hole.

6. The cap removal jig according to claim 5, characterized in that: There are a plurality of the second through holes, which are arranged in an array on the pressing plate, and at least one connecting portion is arranged next to each of the second through holes.

7. The cap removal jig according to claim 2, characterized in that: An elastic structure is arranged between the bottom of the shell and the pressing plate.

8. The cap removal jig according to claim 2, characterized in that: The cover plate is provided with an escape opening.

9. The cap removal jig according to claim 2, characterized in that: The cover plate is provided with a positioning column.

10. The cap removal jig according to claim 1, characterized in that: The pressing plate is detachably connected to the box body.

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