Potentiometer stamping tool

Abstract

A potentiometer stamping tool relates to the technical field of stamping and adopts the technical scheme that the potentiometer stamping tool comprises an upper die holder and a lower die holder, the upper die holder is provided with an air cylinder, a piston rod of the air cylinder is connected with an upper clamping plate, the potentiometer stamping tool further comprises a brush sheet stamping unit and a bottom plate stamping unit, and the brush sheet stamping unit comprises a first punch and a first female die insert; the first punch is provided with an arc-shaped part, the first female die insert is provided with a positioning circular groove matched with a potentiometer rotating shaft, and the positioning circular groove is provided with a limiting part; the bottom plate punching unit comprises a second punch and a second female die insert, the second punch is provided with four grooves, and the second female die insert is provided with a positioning groove matched with a potentiometer shell. According to the utility model, the brush sheet stamping unit and the bottom plate stamping unit are integrated, one stamping action can synchronously complete the installation of brush sheets and bottom plates, the continuous operation of potentiometer assembly is realized, the assembly efficiency is improved, and the brush sheets and the bottom plates can also be independently operated; manual operation is replaced by mechanical operation, in-place installation can be ensured, and the product yield is improved.

Description

Technical Field

[0001] This utility model relates to the field of stamping technology, and in particular to a potentiometer stamping fixture. Background Technology

[0002] A potentiometer includes a housing 11, a base plate 13 inserted into four fixed posts 12 of the housing 11, a rotating shaft 14 rotatably connected to the housing 11, and brushes 15 inserted into two posts on the end face of the rotating shaft 14. The housing and the rotating shaft are respectively as shown in the figure. Figure 1 , 2 As shown. In traditional production processes, manual labor is required to insert the base plate 13 onto the four fixed posts 12 and to insert the brush 15 onto the end face of the rotating shaft 14. This repetitive labor can easily lead to fatigue, resulting in improper installation and affecting product quality. Utility Model Content

[0003] To address the problem that manual installation in existing technologies is prone to fatigue and incomplete installation, this utility model provides a potentiometer stamping fixture.

[0004] This utility model provides the following technical solution: a potentiometer stamping fixture, including an upper die base and a lower die base, wherein the upper die base is provided with a cylinder, and the piston rod of the cylinder is connected to an upper clamping plate, and further includes:

[0005] The brush stamping unit includes a first punch disposed on the upper clamping plate and a first die insert disposed on the lower die base. The first punch has an arc-shaped portion at one end facing the first die insert, and the first die insert has a positioning groove that cooperates with the potentiometer shaft. The positioning groove has a limiting portion.

[0006] The base plate stamping unit includes a second punch disposed on the upper clamping plate and a second die insert disposed on the lower die base. The second punch has four grooves at one end facing the second die insert, and the second die insert has a positioning groove that mates with the potentiometer housing.

[0007] Preferably, brush stamping units are provided on both sides of the base plate stamping unit.

[0008] Preferably, the piston rod of the cylinder is connected to a connecting plate via a connecting block, the connecting plate is connected to the upper clamping plate, and the first punch is provided with a flange that extends between the upper clamping plate and the connecting plate.

[0009] Preferably, the brush stamping unit further includes a first punch sleeve slidably connected to the first punch. The first punch sleeve has a flange at one end facing the upper clamping plate and a protrusion corresponding to the arc-shaped portion at one end facing the lower die base, with the protrusion extending below the arc-shaped portion. The upper clamping plate is also connected to an upper punch plate, which has a sliding groove that is clearance-fitted with the flange of the first punch sleeve. The sliding groove has a constriction at one end facing the lower die base, and the constriction is slidably connected to the first punch sleeve.

[0010] Preferably, the base plate stamping unit further includes a punch insert connected to the upper punch plate. The second punch includes four punches connected to the punch insert and a second punch sleeve. The punches are provided with flanges that extend between the punch insert and the upper punch plate. The second punch sleeve is provided with a first boss. The first boss is provided with four second bosses that correspond to the four punches respectively. The punches pass through the second punch sleeve and the first boss and extend to the second bosses. The punches are retracted into the second bosses so that the second bosses form the groove on the side facing the lower die base.

[0011] Preferably, the lower mold base is provided with a lower template that mates with the first die insert, and the first die insert is provided with a flange that extends between the lower template and the lower mold base.

[0012] The beneficial effects of this utility model are: This utility model integrates the brush stamping unit and the base plate stamping unit into one unit. One stamping action can simultaneously complete the installation of the brush and the base plate, realize continuous operation of potentiometer assembly, improve assembly efficiency, or they can be operated separately; mechanical operation replaces manual operation, which can ensure proper installation and improve product yield. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the potentiometer housing.

[0014] Figure 2 This is a schematic diagram of the potentiometer shaft.

[0015] Figure 3 This is a three-dimensional schematic diagram of one embodiment of a stamping fixture.

[0016] Figure 4 This is a front view of one embodiment of a stamping fixture.

[0017] Figure 5 This is a cross-sectional view of one embodiment of the brush stamping unit.

[0018] Figure 6 for Figure 5 AA cross-section view.

[0019] Figure 7 for Figure 6 Enlarged view of part B.

[0020] Figure 8 for Figure 3 Enlarged view of part C.

[0021] Figure 9 for Figure 6 Enlarged view of part D.

[0022] Figure 10 This is a cross-sectional view of one embodiment of the base plate stamping unit.

[0023] Reference numerals: 11. Outer shell; 12. Fixing post; 13. Base plate; 14. Rotating shaft; 15. Brush blade; 21. Upper mold base; 22. Lower mold base; 221. Guide post; 23. Cylinder; 24. Upper clamping plate; 25. Connecting block; 26. Connecting plate; 27. Upper punch plate; 271. Slide groove; 28. Lower template; 31. First punch; 311. Arc-shaped part; 32. First die insert; 321. Positioning groove; 322. Limiting part; 33. First punch sleeve; 331. Protrusion; 41. Second punch; 411. Groove; 412. Punch; 413. Second punch sleeve; 414. First boss; 415. Second boss; 42. Second die insert; 421. Positioning groove; 43. Punch insert. Detailed Implementation

[0024] The embodiments of this utility model will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement them after reading this specification. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] This utility model provides a potentiometer stamping fixture, including an upper die holder 21 and a lower die holder 22. Please refer to... Figure 3 , 4 The upper mold base 21 is equipped with a cylinder 23. The piston rod of the cylinder 23 is bolted to a connecting block 25. The connecting block 25 is bolted to a connecting plate 26. The connecting plate 26 is bolted to an upper clamping plate 24. The upper clamping plate is bolted to an upper punch plate 27. The lower mold base 22 is also equipped with multiple guide posts 221. The connecting plate 26, the upper clamping plate 24, and the upper punch plate 27 are all slidably connected to the guide posts 221. The cylinder 23 drives the upper clamping plate 24 and the others to move up and down along the guide posts 221.

[0026] The stamping fixture includes a brush stamping unit for inserting the potentiometer brush 15 onto two pillars on the end face of the rotating shaft 14. The brush stamping unit includes a first punch 31 disposed on the upper clamping plate 24, a first die insert 32 disposed on the lower die base 22, and a first punch sleeve 33 slidably connected to the first punch 31.

[0027] Please refer to Figure 5-7 The first punch 31 is provided with a flange, and the flange extends between the upper clamping plate 24 and the connecting plate 26 to fix the first punch 31. The first punch 31 is provided with an arc-shaped part 311 at one end facing the first die insert 32. During stamping, the arc-shaped part 311 contacts the area of ​​the brush 15 near the two pillars on the end face of the rotating shaft 14, inserts the brush 15 onto the two pillars on the end face of the rotating shaft 14, and avoids contact with other areas of the brush 15 to prevent damage to the brush 15. The first punch sleeve 33 is fitted onto the outer wall of the first punch 31. A flange is provided at the end facing the upper clamping plate 24. The upper punch plate 27 is provided with a sliding groove 271 that clearance-fits the flange of the first punch sleeve 33. A constriction is provided at the end of the sliding groove 271 facing the lower die base 22. This constriction is slidably connected to the first punch sleeve 33, allowing the first punch sleeve 33 to slide relative to the first punch 31, and the constriction also serves to limit the movement of the first punch sleeve 33. The first punch sleeve 33 has a protrusion 331 at the end facing the lower die base 22, corresponding to the arc-shaped portion 311. During stamping, the first punch sleeve 33 contacts the brush 15 in the area near the two pillars on the end face of the rotating shaft 14, avoiding other areas of the brush 15 to prevent damage. Furthermore, the protrusion 331 extends below the arc-shaped portion 311. After stamping, when the first punch 31 moves upward, the protrusion 331 can be stripped from the brush 15 under gravity.

[0028] Please refer to Figure 5 , 8 The lower mold base 22 is provided with a lower template 28 that mates with the first die insert 32. The first die insert 32 is provided with a flange that extends between the lower template 28 and the lower mold base 22, thereby fixing the first die insert 32. The first die insert 32 is provided with a positioning groove 321 that mates with the potentiometer shaft. The potentiometer shaft 14 is inserted into the positioning groove 321, and the positioning groove 321 is provided with a limiting part 322. The limiting part 322 corresponds to the notch of the shaft 14, so that after the shaft 14 is fixed, the area near the two pillars on its end face corresponds to the arc-shaped part 311.

[0029] During brush stamping, the rotating shaft 14 is first inserted into the positioning groove 321, and the brush 15 is placed on the rotating shaft. Then, the pneumatic cylinder moves the first punch 31 downward, and the arc-shaped part 311 is stamped on the area near the two pillars on the end face of the rotating shaft 14. The brush 15 is then inserted into the two pillars on the end face of the rotating shaft 14. Then, the first punch 31 moves upward, and with the assistance of the first punch sleeve 33, the first punch 31 disengages from the brush 15.

[0030] The stamping fixture also includes a base plate stamping unit for inserting the base plate 13 of the potentiometer onto the four fixing posts 12 of the housing 11. The base plate stamping unit includes a second punch 41 disposed on the upper clamping plate 24 and a second die insert 42 disposed on the lower die holder 22.

[0031] Please refer to Figure 9 , 10 A punch insert 43 is bolted to the notch of the upper punch plate 27. The second punch 41 includes four punches 412 connected to the punch insert 43 and a second punch sleeve 413. The punches 412 are provided with flanges that extend between the punch insert 43 and the upper punch plate 27 to fix the punches. The second punch sleeve 413 is bolted to the punch insert 43 and is provided with a first boss 414. The first boss 414 is provided with four second bosses 415 corresponding to the four punches 412. The punches 412 pass through the second punch sleeve 413 and the first boss 414 and extend to the second bosses 415. The punches 412 are retracted into the second bosses 415 so that the side of the second bosses 415 facing the lower die base 22 forms a groove 411. The lower mold base 22 is bolted to a second mold insert 42, which has a positioning groove 421 that mates with the potentiometer housing for fixing the housing 11.

[0032] During the stamping of the base plate, the outer shell 11 is first placed in the positioning groove 421, then the rotating shaft 14 with the brush 15 inserted is inserted into the outer shell 11, and the base plate 13 is snapped into the top of the four fixing posts 12, covering the rotating shaft 14. Then, the pneumatic cylinder moves the second punch 41 down, and the four grooves 411 correspond to the four fixing posts 12 of the outer shell 11 respectively, so that the second protrusion 415 avoids the fixing posts 12 and contacts the base plate 13, pressing the base plate 13 and the four fixing posts 12 together until the outer shell 11 blocks the base plate 13, and then the second punch 41 is reset.

[0033] This invention integrates the brush stamping unit and the base plate stamping unit into one unit. A single stamping action can simultaneously complete the installation of the brush and base plate, enabling continuous potentiometer assembly and improving assembly efficiency. Alternatively, they can be operated separately. Mechanical operation replaces manual labor, ensuring proper installation and improving product yield. Preferably, a brush stamping unit is provided on both sides of the base plate stamping unit to improve brush stamping efficiency and facilitate cyclic operation.

[0034] The above describes one or more embodiments of this utility model in a relatively specific and detailed manner, but it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A potentiometer stamping fixture, comprising an upper die holder and a lower die holder, wherein the upper die holder is equipped with a cylinder, and the piston rod of the cylinder is connected to an upper clamping plate, characterized in that, Also includes: The brush stamping unit includes a first punch disposed on the upper clamping plate and a first die insert disposed on the lower die base. The first punch has an arc-shaped portion at one end facing the first die insert, and the first die insert has a positioning groove that cooperates with the potentiometer shaft. The positioning groove has a limiting portion. The base plate stamping unit includes a second punch disposed on the upper clamping plate and a second die insert disposed on the lower die base. The second punch has four grooves at one end facing the second die insert, and the second die insert has a positioning groove that mates with the potentiometer housing.

2. The potentiometer stamping fixture according to claim 1, characterized in that, Both sides of the base plate stamping unit are equipped with brush stamping units.

3. The potentiometer stamping fixture according to claim 1, characterized in that, The piston rod of the cylinder is connected to a connecting plate via a connecting block, and the connecting plate is connected to the upper clamping plate. The first punch is provided with a flange, and the flange extends between the upper clamping plate and the connecting plate.

4. The potentiometer stamping fixture according to claim 3, characterized in that, The brush stamping unit further includes a first punch sleeve slidably connected to the first punch. The first punch sleeve has a flange at one end facing the upper clamping plate and a protrusion corresponding to the arc-shaped portion at one end facing the lower die base, with the protrusion extending below the arc-shaped portion. The upper clamping plate is also connected to an upper punch plate, which has a sliding groove that is clearance-fitted with the flange of the first punch sleeve. The sliding groove has a constriction at one end facing the lower die base, and the constriction is slidably connected to the first punch sleeve.

5. A potentiometer stamping fixture according to claim 4, characterized in that, The base plate stamping unit further includes a punch insert connected to the upper punch plate. The second punch includes four punches connected to the punch insert and a second punch sleeve. The punches are provided with flanges that extend between the punch insert and the upper punch plate. The second punch sleeve is provided with a first boss. The first boss is provided with four second bosses that correspond to the four punches respectively. The punches pass through the second punch sleeve and the first boss and extend to the second bosses. The punches are retracted into the second bosses so that the second bosses form the groove on the side facing the lower die base.

6. A potentiometer stamping fixture according to claim 1, characterized in that, The lower mold base is provided with a lower template that mates with the first die insert. The first die insert is provided with a flange that extends between the lower template and the lower mold base.

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