Profile R-angle chamfering die for PCB (printed circuit board) contact pin production

Abstract

The utility model discloses an appearance R-angle chamfering die for PCB (printed circuit board) contact pin production, which relates to the technical field of PCB contact pin production, and comprises an upper die and a lower die, a left convex die downwards penetrating through a fixed plate and a stripper plate in sequence is fixedly arranged on the bottom surface of an upper backing plate, and a right convex die downwards penetrating through a lower backing plate is fixedly arranged on the bottom surface of a lower backing plate. A first arc-shaped groove is longitudinally formed in the bottom surface of the extending end of the left male die, and a right male die sequentially penetrating through the fixing plate and the discharging plate is further fixedly arranged on the bottom surface of the upper base plate. The lower die comprises a base, a lower base plate and a female die plate which are sequentially and fixedly arranged into a whole from bottom to top, a left insert penetrating through the female die plate is fixedly arranged on the top surface of the lower base plate, the top surface of the left insert is flush with the top surface of the female die plate, and a longitudinally-arranged positioning plate is fixedly arranged in the left insert. The beneficial effects of the utility model are that the work intensity of workers is reduced, and the production efficiency of contact pins is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing pins for PCB boards, in particular to an outer shape chamfering mold for manufacturing pins for PCB boards. Background Art

[0002] After the PCB board is manufactured, pins on a flying probe tester need to be inserted into the detection holes in the PCB board to test the electrical performance of the PCB board. There are many specifications and types of pins. The structure of a certain pin 1 is as Figures 1 - 2 shown. It is in a long strip shape as a whole, and an R chamfer 2 is formed at each of the four corners of the pin 1 along its length direction.

[0003] In the production workshop, a blank 3 as shown in Figures 3 - 4 is mainly used to produce the required pin 1. The blank 3 is in a long strip shape as a whole, and the cross-section of the blank 3 is rectangular. The method of using the blank 3 to produce the pin 1 in the workshop is as follows:

[0004] S1. A worker takes out a blank 3, sends the blank 3 to the stamping station of the stamping die, controls the punch of the stamping die to move downward, the punch stamps an R chamfer 2 at the upper right corner of the blank 3, and then the worker adjusts the position of the blank 3. After the position is adjusted, the punch of the stamping die is controlled to move downward again to stamp an R chamfer 2 at the upper left corner of the blank 3;

[0005] S2. The blank 3 is turned over, and the operation in step S1 is repeated twice to stamp R chamfers 2 at the other two corners of the blank 3, thereby producing a pin 1;

[0006] S3. The worker repeats the operations in steps S1 - S2 many times, and then can produce pins 1 corresponding to multiple blanks 3.

[0007] However, although the workshop can produce pins 1 using the blank 3, there are still the following technical defects in terms of technology:

[0008] In steps S1 - S2, the worker needs four processes to stamp R chamfers 2 at the four corners of the blank 3 respectively, which undoubtedly increases the production time of a single pin 1, and thus reduces the production efficiency of the pin 1. In addition, during the production process, the position of the blank 3 needs to be frequently adjusted so that the corner of the blank 3 is positioned directly below the punch of the stamping die. This not only increases the working intensity of the worker, but also further reduces the production efficiency of the pins.

[0009] Therefore, there is an urgent need for an outer shape chamfering mold that can reduce the working intensity of workers and greatly improve the production efficiency of pins. Summary of the Utility Model

[0010] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a chamfering die with an inverted R-shaped outer contour for PCB pin insertion production, which can reduce the working intensity of workers and greatly improve the production efficiency of pin insertion.

[0011] The purpose of the utility model is realized through the following technical solutions: A chamfering die with an inverted R-shaped outer contour for PCB pin insertion production, which includes an upper die and a lower die. The upper die includes an upper bolster, an upper backing plate, a fixing plate, and a stripper plate fixedly arranged in sequence from top to bottom. A left punch fixedly penetrates through the fixing plate and the stripper plate downward on the bottom surface of the upper backing plate. A longitudinally arranged first circular arc groove is formed on the bottom surface of the extending end of the left punch. A right punch sequentially penetrates through the fixing plate and the stripper plate is also fixedly arranged on the bottom surface of the upper backing plate. The bottom surface of the right punch is flush with the bottom surface of the stripper plate.

[0012] The lower die includes a base, a lower backing plate, and a concave template fixedly arranged in sequence from bottom to top. A left insert fixedly penetrates through the concave template is arranged on the top surface of the lower backing plate. The top surface of the left insert is flush with the top surface of the concave template. A longitudinally arranged positioning plate is fixedly arranged inside the left insert. The outer contour of the top surface of the positioning plate matches the outer contour of the bottom surface of the blank. The positioning plate is located directly below the first circular arc groove, and the top surface of the positioning plate is flush with the top surface of the left insert.

[0013] A right insert fixedly penetrates through the concave template is arranged on the top surface of the lower backing plate. A longitudinally arranged second circular arc groove is formed on the top surface of the extending end of the right insert. The second circular arc groove is located directly below the right punch.

[0014] The upper bolster, upper backing plate, fixing plate, and stripper plate of the upper die are fixedly connected together by locking screws.

[0015] The base, lower backing plate, and concave template of the lower die are fixedly connected together by locking screws.

[0016] A groove is formed inside the left insert, and the positioning plate is embedded in the groove.

[0017] Arc-shaped surfaces are formed on both the left and right sides of the bottom of the first circular arc groove, and arc-shaped surfaces are formed on both the left and right sides of the bottom of the second circular arc groove.

[0018] The utility model has the following advantages: It can reduce the working intensity of workers and greatly improve the production efficiency of pin insertion. Description of the Drawings

[0019] Figure 1 Isometric view of the PCB pin

[0020] Figure 2 For Figure 1 Cross-sectional schematic diagram of

[0021] Figure 3 Isometric view of the blank

[0022] Figure 4 is the schematic cross-sectional view of Figure 3 ;

[0023] Figure 5 is the structural schematic diagram of the present utility model;

[0024] Figure 6 is Figure 5 the partial enlarged view of part A of

[0025] Figure 7 the structural schematic diagram of the left punch;

[0026] Figure 8 is the axonometric drawing of the positioning plate;

[0027] Figure 9 is Figure 8 the schematic cross-sectional view of

[0028] Figure 10 the structural schematic diagram of the right insert;

[0029] Figure 11 the schematic diagram of positioning the blank;

[0030] Figure 12 is Figure 11 the partial enlarged view of part B of

[0031] Figure 13 the schematic diagram of the first circular arc groove buckling on the upper end of the blank;

[0032] Figure 14 is Figure 13 the partial enlarged view of part C of

[0033] Figure 15 the structural schematic diagram of the blank with two R corners;

[0034] Figure 16 the schematic diagram of the blank being embedded into the second circular arc groove of the right insert;

[0035] Figure 17 is Figure 16 the partial enlarged view of part D of

[0036] Figure 18 the schematic diagram of the right punch stamping on the top surface of the blank;

[0037] Figure 19 is Figure 18 the partial enlarged view of part E of

[0038] In the figure:

[0039] 1 - pin, 2 - R corner, 3 - blank;

[0040] 4 - upper die, 5 - lower die, 6 - upper support, 7 - upper backing plate, 8 - stripper plate, 9 - left punch, 10 - first arc-shaped groove, 11 - right punch;

[0041] 12 - base, 13 - lower backing plate, 14 - cavity plate, 15 - left insert, 16 - positioning plate, 17 - right insert, 18 - second arc-shaped groove. Specific embodiments

[0042] The following further describes the present utility model in conjunction with the accompanying drawings. The protection scope of the present utility model is not limited to the following:

[0043] As Figures 5 - 10 shown, a die for chamfering the outer shape in the production of PCB board pins includes an upper die 4 and a lower die 5. The upper die 4 includes an upper support 6, an upper backing plate 7, a fixed plate, and a stripper plate 8 fixedly arranged in sequence from top to bottom. A left punch 9 is fixedly arranged on the bottom surface of the upper backing plate 7 and sequentially penetrates through the fixed plate and the stripper plate 8 downward. A longitudinally arranged first arc-shaped groove 10 is formed on the bottom surface of the extended end of the left punch 9. A right punch 11 is also fixedly arranged on the bottom surface of the upper backing plate 7 and sequentially penetrates through the fixed plate and the stripper plate 8. The bottom surface of the right punch 11 is flush with the bottom surface of the stripper plate 8.

[0044] The lower die 5 includes a base 12, a lower backing plate 13, and a cavity plate 14 fixedly arranged in sequence from bottom to top. A left insert 15 penetrating through the cavity plate 14 is fixedly arranged on the top surface of the lower backing plate 13. The top surface of the left insert 15 is flush with the top surface of the cavity plate 14. A longitudinally arranged positioning plate 16 is fixedly arranged inside the left insert 15. A groove is formed inside the left insert 15, and the positioning plate 16 is embedded in the groove. The outer contour of the top surface of the positioning plate 16 matches the outer contour of the bottom surface of the blank 3. The positioning plate 16 is located directly below the first arc-shaped groove 10, and the top surface of the positioning plate 16 is flush with the top surface of the left insert 15. A right insert 17 penetrating through the cavity plate 14 is fixedly arranged on the top surface of the lower backing plate 13. A longitudinally arranged second arc-shaped groove 18 is formed on the top surface of the extended end of the right insert 17. The second arc-shaped groove 18 is located directly below the right punch 11.

[0045] The upper support 6, the upper backing plate 7, the fixed plate, and the stripper plate 8 of the upper die 4 are fixedly connected to each other by locking screws. The base 12, the lower backing plate 13, and the cavity plate 14 of the lower die 5 are fixedly connected to each other by locking screws.

[0046] Arc-shaped surfaces are formed on both the left and right sides of the bottom of the first arc-shaped groove 10. Arc-shaped surfaces are formed on both the left and right sides of the bottom of the second arc-shaped groove 18.

[0047] The working process of the present utility model is as follows:

[0048] S1. Workers fixedly connect the upper support of the upper die 4 to the stamping head of the stamping die.

[0049] S2. Workers take out a blank 3 as shown in, place the blank 3 flat on the top surface of the positioning plate 16, and ensure that the outer contour of the bottom surface of the blank 3 matches the outer contour of the top surface of the positioning plate 16, thereby realizing the positioning of the blank 3. As shown in, at this time, the blank 3 is just right below the first circular arc groove 10 of the left punch 9. Figures 3 - 4 shown, at this time, the blank 3 is just right below the first circular arc groove 10 of the left punch 9. Figures 11 - 12 shown, at this time, the blank 3 is just right below the first circular arc groove 10 of the left punch 9.

[0050] S3. Control the stamping head of the stamping die to move downward. The stamping head drives the upper support 6, the upper backing plate 7, the fixing plate and the stripper plate 8 to move downward synchronously, and then drives the left punch 9 and the right punch 11 to move downward synchronously. The left punch 9 drives the first circular arc groove 10 to move towards the blank 3. When the die is closed, the first circular arc groove 10 buckles on the upper end of the blank 3. As shown in, at the same time, the arc surfaces on the left and right sides of the first circular arc groove 10 respectively buckle on the upper left corner and the upper right corner of the blank 3, and then R corners 2 are formed on both corners of the blank 3. As shown in. Figures 13 - 14 shown, at the same time, the arc surfaces on the left and right sides of the first circular arc groove 10 respectively buckle on the upper left corner and the upper right corner of the blank 3, and then R corners 2 are formed on both corners of the blank 3. As shown in. Figure 15 shown;

[0051] S4. Control the stamping head of the stamping die to move upward. The punch head drives the upper support 6, the upper backing plate 7, the fixing plate and the stripper plate 8 to move upward synchronously, and then drives the left punch 9 and the right punch 11 to move upward synchronously. The left punch 9 is separated from the blank 3. After separation, the worker takes away the blank 3 from the positioning plate 16.

[0052] S5. Workers embed the blank 3 with two R corners 2 into the second circular arc groove 18 of the right insert 17. As shown in. Figures 16 - 17 shown;

[0053] S6. Control the stamping head of the stamping die to move downward. The stamping head drives the upper support 6, the upper backing plate 7, the fixing plate and the stripper plate 8 to move downward synchronously, and then drives the left punch 9 and the right punch 11 to move downward synchronously. The right punch 11 moves towards the blank 3. When the die is closed, the right punch 11 punches on the top surface of the blank 3. As shown in, at the same time, the arc surfaces on the left and right sides of the second circular arc groove 18 respectively buckle on the lower left corner and the lower right corner of the blank 3, and then R corners 2 are formed on both corners of the blank 3, thereby finally producing the pin 1 with four R corners 2. The structure of the produced pin 1 is as shown in. Figures 18 - 19 shown, at the same time, the arc surfaces on the left and right sides of the second circular arc groove 18 respectively buckle on the lower left corner and the lower right corner of the blank 3, and then R corners 2 are formed on both corners of the blank 3, thereby finally producing the pin 1 with four R corners 2. The structure of the produced pin 1 is as shown in. Figures 1 - 2 shown;

[0054] S7. Workers repeat the operations of steps S2 to S6 multiple times, and then the pins 1 can be produced corresponding to multiple blanks 3.

[0055] Among them, from step S2 to S3, only need to position the blank 3 on the positioning plate 16 first, and then control the punch of the stamping die to move downward, then two R corners 2 can be formed on the blank 3; then in steps S5 to S6, position the blank 3 in the second circular arc groove 18, and then control the punch of the stamping die to move downward again, then the other two R corners 2 can be formed on the blank 3, and then the required pin 1 can be formed.

[0056] It can be seen from this that this die only needs two processes to form R corners 2 on the four corners of the blank 3. Therefore, compared with the forming method in the workshop, this die does not require workers to form R corners 2 at the four corners of the blank 3 in four separate processes, thus shortening the production time of a single pin 1, and further greatly improving the production efficiency of the pin 1.

[0057] In addition, during the whole production process, workers only need to position the blank 3 in the positioning plate 16 and the second circular arc groove 18 respectively to produce the pin 1. Therefore, compared with the production method in the workshop, this die does not require workers to frequently adjust the position of the blank 3, which not only reduces the working intensity of the workers, but also further improves the production efficiency of the pin 1.

[0058] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An outer shape chamfering die for PCB pin production, characterized in that: It includes an upper die (4) and a lower die (5). The upper die (4) includes a top plate (6), an upper backing plate (7), a fixing plate, and a stripper plate (8) fixedly arranged in sequence from top to bottom. A left punch (9) is fixedly arranged on the bottom surface of the upper backing plate (7) and sequentially penetrates through the fixing plate and the stripper plate (8) downward. A longitudinally arranged first circular arc groove (10) is formed on the bottom surface of the extending end of the left punch (9). A right punch (11) that sequentially penetrates through the fixing plate and the stripper plate (8) is also fixedly arranged on the bottom surface of the upper backing plate (7). The bottom surface of the right punch (11) is flush with the bottom surface of the stripper plate (8). The lower die (5) includes a base (12), a lower backing plate (13), and a concave template (14) fixedly arranged in sequence from bottom to top. A left insert (15) that penetrates through the concave template (14) is fixedly arranged on the top surface of the lower backing plate (13). The top surface of the left insert (15) is flush with the top surface of the concave template (14). A longitudinally arranged positioning plate (16) is fixedly arranged inside the left insert (15). The outer contour of the top surface of the positioning plate (16) matches the outer contour of the bottom surface of the blank (3). The positioning plate (16) is located directly below the first circular arc groove (10), and the top surface of the positioning plate (16) is flush with the top surface of the left insert (15). A right insert (17) that penetrates through the concave template (14) is fixedly arranged on the top surface of the lower backing plate (13). A longitudinally arranged second circular arc groove (18) is formed on the top surface of the extending end of the right insert (17). The second circular arc groove (18) is located directly below the right punch (11).

2. The outer shape chamfering die for PCB pin production according to claim 1, characterized in that: The top plate (6), the upper backing plate (7), the fixing plate, and the stripper plate (8) of the upper die (4) are fixedly connected to each other by locking screws.

3. The external chamfering die for producing PCB pins according to claim 1, characterized in that: The base (12), the lower backing plate (13), and the concave template (14) of the lower die (5) are fixedly connected to each other by locking screws.

4. A chamfering die for producing the outer shape of PCB pins according to claim 1, characterized in that: A groove is formed inside the left insert (15), and the positioning plate (16) is embedded in the groove.

5. The profile chamfering die for PCB pin production according to claim 1, characterized in that: Arc surfaces are formed on both the left and right sides of the bottom of the first circular arc groove (10), and arc surfaces are formed on both the left and right sides of the bottom of the second circular arc groove (18).

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