Shaft lead resistor forming device

Abstract

The utility model discloses a shaft lead resistor forming device which comprises a T-shaped forming base, the top of the T-shaped forming base is provided with a forming tire, a silica gel pad is arranged above the forming tire, a fixing assembly is arranged above the silica gel pad, the top of the forming tire is provided with a groove, one side of the top of the forming tire is provided with an arc-shaped surface, and the other side of the forming tire is provided with a fixing assembly. A bottom clamping groove is formed in the bottom of the forming tire, a resistor clamping groove is formed in the top of the silica gel pad, a to-be-formed resistor is arranged in the resistor clamping groove, and a resistor pin is arranged in the middle of the to-be-formed resistor. According to the utility model, a plurality of groups of resistor clamping grooves are arranged on the silica gel pad, and the outer contour of the forming tire is arranged to be in a shape consistent with that of the formed resistor pins, so that a plurality of resistors to be formed can be quickly and uniformly bent at a time, and the forming efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shaft lead resistance forming, particularly to shaft lead resistance forming device. BACKGROUND

[0002] The shaft lead resistance accounts for 60% in the through-hole type PCB product, the forming work of the resistance pin of this kind is very large, the company's electric installation line currently all adopts manual forming, the precision cannot satisfy the requirement, and the efficiency is greatly reduced through repeated shearing each time.

[0003] The general solution of the shaft lead resistance can adopt automatic pin forming equipment, but is not applicable to the production of multiple varieties and small batches, another solution adopts resistance pin forming pliers, the forming pliers can only complete the forming of one resistance each time, the efficiency is not high, and the two ends of the formed pin have no inward arc, and the distance between the resistance and the board surface after the resistance is inserted into the board cannot meet the requirement of 0.5 to 1.5 mm. In the prior art, a corresponding thickness of a pad is needed to be placed under the resistance before welding to ensure the distance between the resistance and the PCB surface, and the pad is removed after welding, and the efficiency is low. SUMMARY

[0004] The main purpose of the utility model is to provide the shaft lead resistance forming device, can effectively solve the problem in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0006] The shaft lead resistance forming device comprises a T-shaped forming base, characterized in that: a forming die is arranged at the top of the T-shaped forming base, and a silica gel pad is arranged above the forming die; and a resistance to be formed is clamped in the silica gel pad.

[0007] The forming die is a strip-shaped component, a through groove is arranged at the middle position of the top of the forming die, a bottom clamping groove is arranged at the middle position of the bottom of the forming die, the top of the side wall of the forming die, i.e. the top of the side wall of the groove, is an arc surface, and the top of the two side walls of the groove is a symmetrical arc surface; the bottom clamping groove of the forming die is sleeved on the top of the T-shaped forming base, and the length of the top of the T-shaped forming base is less than the length of the bottom clamping groove; and the outer contour of the cross section of the forming die is consistent with the shape of the resistance pin after forming.

[0008] The silica gel pad is a strip-shaped component, the silica gel pad can be inserted into the groove to form a clearance fit, the end of the silica gel pad is flush with the end of the groove, the thickness of the silica gel pad is greater than the depth of the groove, the top of the silica gel pad is provided with resistance clamping grooves arranged at equal intervals and penetrating through, and the resistance clamping grooves are all perpendicular to the side wall of the groove.

[0009] The resistance to be formed has resistance pins extending from both ends, and the resistance to be formed is clamped in the resistance clamping groove, and the resistance pins extend from both ends of the resistance clamping groove.

[0010] Further, the upper side of the silica gel pad is provided with a fixing assembly, which clamps and fixes the silica gel pad on the molding die.

[0011] Further, the to-be-molded resistor is clamped in the resistor clamping groove, and the top surface of the to-be-molded resistor is higher than the top surface of the silica gel pad.

[0012] Further, the fixing assembly comprises a positioning top plate, two L-shaped clamping rods and a connecting top plate; the two ends of the positioning top plate are provided with symmetrical connecting grooves, the openings of the connecting grooves are flush with the two ends of the positioning top plate; the two L-shaped clamping rods are symmetrically hinged at the openings of the connecting grooves through hinge shafts, and the horizontal plates of the two L-shaped clamping rods are located below the positioning top plate for clamping; the connecting top plate is transversely arranged on the top of the vertical rods of the two L-shaped clamping rods, one end of the connecting top plate is hingedly connected with the top end of the vertical rod of one L-shaped clamping rod and can horizontally rotate, and the side surface of the other end of the connecting top plate is provided with a connecting groove and can be hung on the connecting bolt on the top end of the vertical rod of the other L-shaped clamping rod; the top surface of the positioning top plate abuts against the top surface of the silica gel pad, the inner side surfaces of the vertical rods of the two L-shaped clamping rods abut against the flush end surfaces of the silica gel pad and the molding die, and the horizontal plates of the two L-shaped clamping rods are clamped in the bottom clamping grooves at the bottom of the molding die.

[0013] Further, the outer contour of the cross section of the molding die is H-shaped with the upper end being wide and the lower end being narrow, the upper end of the cross section is a circular arc of two symmetrical arc surfaces, and the waist lines on the two sides of the cross section are inwardly inclined inclined lines.

[0014] Compared with the prior art, the utility model has the advantages that by arranging a plurality of resistor clamping grooves on the silica gel pad and arranging the outer contour of the molding die into a shape consistent with the shape of the resistor pin after molding, the to-be-molded resistors can be subjected to rapid and unified bending processing in multiple pieces at a time, and the molding efficiency is greatly improved. The stability during the resistor bending and molding process can be further improved by cooperating with the fixing assembly. In addition, due to the feature that the outer contour of the molding die is consistent with the shape of the resistor pin after molding, the shape of the outer contour of the molding die can be adjusted, so that the molded resistor can directly obtain the effect of a distance of 0.5-1mm between the resistor and the board surface when being inserted into the PCB board surface. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the structure schematic diagram of the whole device of the utility model;

[0016] Figure 2 is the structure schematic diagram of the bottom of the whole device of the utility model;

[0017] Figure 3 is the structure schematic diagram of the fixing assembly of the utility model;

[0018] Figure 4 is the structure schematic diagram of the molding die of the utility model;

[0019] Figure 5 is the structural schematic diagram of the silica gel pad of the utility model;

[0020] Figure 6 is the structural schematic diagram of the device and the formed resistance;

[0021] Figure 7 is the structural schematic diagram of the formed resistance.

[0022] In the figure: 1, T forming base; 2, forming belly; 3, recess; 4, bottom clamping groove; 5, arc surface; 6, silica gel pad; 7, resistance clamping groove; 8, resistance to be formed; 9, resistance lead; 10, fixed assembly; 11, positioning top plate; 12, connecting groove; 13, hinged shaft; 14, L-shaped clamping rod; 15, connecting top plate; 16, positioning bolt; 17, connecting bolt; 18, connecting recess; 19, cross section; 20, circular arc; 21, waist line. DETAILED DESCRIPTION

[0023] In order to make the technical personnel in the field better understand the technical scheme of the utility model, the utility model is further explained in detail below in combination with the drawings and specific embodiments.

[0024] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 5 , the shaft lead resistance forming device includes T forming base 1, the top of T forming base 1 is provided with forming belly 2, and the top of forming belly 2 is provided with silica gel pad 6, and the top of silica gel pad 6 is provided with fixed assembly 10. The resistance to be formed 8 is clamped in silica gel pad 6. The specific structure is as follows:

[0025] As shown in Figure 2 , the shape of T forming base 1 is inverted T-shaped.

[0026] As shown in Figure 3 , forming belly 2 is a strip-shaped component. The top middle position of forming belly 2 is provided with a through recess 3. The bottom middle position of forming belly 2 is provided with bottom clamping groove 4. The top of the side wall of forming belly 2, that is, the top of the side wall of recess 3, is arc surface 5. The top of the two side walls of recess 3 is symmetrical arc surface 5, that is, the top of the side wall of forming belly 2 is two symmetrical arc surfaces 5.

[0027] As shown in Figure 1 , Figure 2 and Figure 4 , the bottom clamping groove 4 of forming belly 2 is sleeved on the top of T forming base 1. The length of the top of T forming base 1 is less than the length of bottom clamping groove 4.

[0028] AsFigure 1 and Figure 5 As shown in the figure, the silica gel pad 6 is a strip-shaped component. The length of the silica gel pad 6 is consistent with the length of the groove 3. The width of the silica gel pad 6 is adapted to the width of the groove 3. The thickness of the silica gel pad 6 is greater than the depth of the groove 3. The silica gel pad 6 can be inserted into the groove 3 to form a clearance fit, and the end of the silica gel pad 6 is flush with the end of the groove 3, and the bottom of the silica gel pad 6 is attached to the bottom surface of the groove 3. The top of the silica gel pad 6 is provided with through-resistor card slots 7 arranged at equal intervals. Each resistor card slot 7 is perpendicular to the side wall of the groove 3. The middle of the to-be-formed resistor 8 is provided with a resistor pin 9. The length of the to-be-formed resistor 8 is less than the length of the resistor card slot 7. The to-be-formed resistor 8 is clamped in the resistor card slot 7, and the resistor pin 9 extends out of both ends of the resistor card slot 7. The resistor card slot 7 forms a squeeze on the to-be-formed resistor 8. The silica gel pad 6 clamped with the to-be-formed resistor 8 is inserted into the groove 3, and the resistor pin 9 extends outward from the two arc-shaped surfaces 5 of the molded tire 2.

[0029] It should be noted that the silica gel pad 6 is provided due to its excellent strength and elasticity. When the to-be-formed resistor 8 is clamped in the resistor card slot 7 of the silica gel pad 6, the silica gel pad 6 is inserted into the groove 3, and finally the silica gel pad 6 is squeezed by the fixing assembly 10, the elasticity of the silica gel pad 6 and the friction generated by the squeeze can well fix the to-be-formed resistor 8, so that it can play a good fixed clamping role when the resistor pin 9 is subsequently bent. In addition, the silica gel pad 6 can also effectively isolate the to-be-formed resistor 8, so that the to-be-formed resistors 8 will not affect each other. The silica gel pad 6 is made of two-component silica gel using a reverse mold process.

[0030] As shown in the figure, Figure 1 , Figure 2 and Figure 3As shown, the fixing assembly 10 comprises a positioning top plate 11, two L-shaped clamping rods 14 and a connecting top plate 15. The two ends of the positioning top plate 11 are provided with symmetrical connecting grooves 12. The connecting grooves 12 are U-shaped grooves, and the openings of the connecting grooves 12 are flush with the two ends of the positioning top plate 11. The two L-shaped clamping rods 14 have vertical rods and horizontal plates. The vertical rods of the two L-shaped clamping rods 14 are respectively hingedly connected at the openings of the connecting grooves 12 through hinged shafts 13. The horizontal plates of the two L-shaped clamping rods 14 are located below the positioning top plate 11, and the two horizontal plates are opposite to each other to play a clamping role. The two L-shaped clamping rods 14 can be turned around the hinged shafts 13 to play an opening or clamping role. The connecting top plate 15 is transversely arranged at the top of the vertical rods of the two L-shaped clamping rods 14. One end of the connecting top plate 15 is hingedly connected with the top end of the vertical rod of one L-shaped clamping rod 14 through a positioning bolt 16, and can be horizontally rotated. The other end of the connecting top plate 15 is provided with a connecting groove 18 on the side surface, and the top end of the vertical rod of the other L-shaped clamping rod 14 is provided with a connecting bolt 17. The connecting groove 18 of the connecting top plate 15 can be hung and buckled with the connecting bolt 17, thereby realizing the positioning and clamping role of the L-shaped clamping rod 14. The area surrounded by the bottom surface of the positioning top plate 11, the horizontal plates of the two L-shaped clamping rods 14 and the vertical rods of the two L-shaped clamping rods 14 is a fixed clamping area.

[0031] When the fixing assembly 10 is used, in the fixed clamping area, the positioning top plate 11 abuts against the top of the silica gel pad 6 and the to-be-molded resistor 8, the inner side surfaces of the vertical rods of the two L-shaped clamping rods 14 abut against the flush end surfaces of the silica gel pad 6 and the molded body 2, and the horizontal plates of the two L-shaped clamping rods 14 are clamped in the bottom clamping grooves 4 at the bottom of the molded body 2. The connecting groove 18 of the connecting top plate 15 is hung and buckled with the connecting bolt 17, and the two L-shaped clamping rods 14 complete the fixed clamping of the silica gel pad 6, the molded body 2 and the T-shaped molded base 1. In the fixed clamping state, the connecting top plate 15 will form extrusion on the top of the silica gel pad 6 and the to-be-molded resistor 8, and under the friction force generated by the elastic deformation of the silica gel pad 6, the to-be-molded resistor 8 will be stably located in the resistor clamping groove 7.

[0032] The utility model discloses a bottom clamping groove 4 is connected in the bottom of T formation base 1's top in use, thereby make T formation base 1 and the moulding tyre 2 set together, again the resistance pin 9 and the resistance that the to be shaped resistance 8 constitute together is placed in the top of silica gel pad 6, the silica gel pad 6 is connected in the recess 3 inside the top of moulding tyre 2, the bottom of silica gel pad 6 and the bottom inner wall of recess 3 contact, again the positioning top board 11 is overlapped in the top of silica gel pad 6, the bottom of positioning top board 11 and the top of silica gel pad 6, the to be shaped resistance 8 contact, the vertical rod of L-shaped clamping rod 14 is hinged in the both ends of positioning top board 11, the horizontal board of L-shaped clamping rod 14 is connected in the bottom clamping groove 4 inside the bottom of moulding tyre 2, again the connecting top board 15 is along the positioning bolt 16 and is rotated, the connecting recess 18 of connecting top board 15 far from the connecting bolt 17 one end of positioning bolt 16 is connected in the outside of connecting bolt 17, rotates connecting bolt 17, thereby realizes the positioning connection of connecting top board 15 to two L-shaped clamping rod 14, further realizes the positioning clamping of moulding tyre 2 and silica gel pad 6, improves the stability of moulding tyre 2 and silica gel pad 6, through the arc surface 5 of setting in the top of moulding tyre 2, the bending of resistance pin 9 is convenient, makes resistance pin 9 along the contour of moulding tyre 2 and bends, realizes the cutting of resistance pin 9 length through special quality elbow scissors.

[0033] It should be noted that when the to-be-shaped resistance 8 is placed in the utility model, the resistance pin 9 is bent and cut, and the shaped structure of the resistance can be directly obtained through the outer contour of the molding tire 2. Figure 4 、 Figure 6 and Figure 7 As shown in the utility model, each resistance clamping groove 7 corresponds to the cross section 19 of the molding tire 2, that is, the outer contour of the cross section 19 of the molding tire 2 is consistent with the shape of the molded resistance pin. Figure 4 and Figure 6 In the utility model, the end face of the molding tire 2 is the cross section 19. The outer contour of the cross section 19 is an H-shaped structure with a wide upper end and a narrow lower end. The upper end is a circular arc 20 of two symmetrical arc surfaces 5, and the waist line 21 on both sides of the cross section 19 is an inwardly inclined line. When bending, the resistance pin 9 is bent according to the outer contour of the cross section 19, and then cut along the lower end of the cross section 19, so that the molding of the resistance is completed. After the molding tire 2 is set to the H-shaped structure with a wide upper end and a narrow lower end, the distance between the two ends of the molded resistance pin 9 at the bending part is slightly greater than the width between the two resistance pins 9. The width between the two ends of the molded resistance pin 9 is consistent with the hole distance of the subsequent welding on the PCB board. Such a design can use the rebound force generated by the wide upper end and the narrow lower end of the molded resistance pin 9 to fix the resistance.

[0034] In the utility model, the arc line 20 of the section 19 of the forming tire 2 determines the bending position and the radian of the resistance pin 9, the inclination of the waist line 21 determines the angle of the convergence between the foot parts of the resistance pin 9, and the lower end of the forming tire 2 determines the position of the cutting of the resistance pin 9. Therefore, according to the size of the hole distance on the PCB board surface, the outer contour of the section 19 of the forming tire 2 can be adjusted, so that the effect that the bottom surface of the resistance is 0.5 to 1 mm away from the PCB board surface after the resistance pin 9 of the resistance after forming is inserted into the PCB board surface is obtained.

Claims

1. A device for forming a shaft lead resistance, comprising a T-shaped forming base (1), characterized in that: The top of the T-shaped forming base (1) is provided with a forming mold (2), and the top of the forming mold (2) is provided with a silica gel pad (6); a resistance to be formed (8) is clamped in the silica gel pad (6); The forming mold (2) is a strip-shaped component, the top middle position of the forming mold (2) is provided with a through groove (3), the bottom middle position of the forming mold (2) is provided with a bottom clamping groove (4), the top of the side wall of the forming mold (2) is an arc surface (5), and the top of the two side walls of the groove (3) is respectively an arc surface (5) in symmetry; the bottom clamping groove (4) of the forming mold (2) is sleeved on the top of the T-shaped forming base (1), and the length of the top of the T-shaped forming base (1) is less than that of the bottom clamping groove (4); the outer contour of the cross section (19) of the forming mold (2) is consistent with the shape of the resistance pin after forming; The silica gel pad (6) is a strip-shaped component, the silica gel pad (6) can be inserted into the groove (3) to form a gap fit, and the end of the silica gel pad (6) is flush with the end of the groove (3), the thickness of the silica gel pad (6) is greater than the depth of the groove (3), the top of the silica gel pad (6) is provided with through resistance clamping grooves (7) arranged at equal intervals, and the resistance clamping grooves (7) are perpendicular to the side walls of the groove (3); The resistance to be formed (8) has resistance pins (9) extending from both ends, and the resistance to be formed (8) is clamped in the resistance clamping groove (7) with the resistance pins (9) extending from both ends of the resistance clamping groove (7).

2. The shaft lead resistance forming apparatus of claim 1, wherein: The resistance to be formed (8) clamped in the resistance clamping groove (7) has a top surface higher than the top surface of the silica gel pad (6).

3. The shaft lead resistance forming apparatus of claim 1, wherein: The top of the silica gel pad (6) is provided with a fixing assembly (10) for fixing and clamping the silica gel pad (6) on the forming mold (2).

4. The shaft lead resistance forming apparatus of claim 3, wherein: The fixing assembly (10) comprises a positioning top plate (11), an L-shaped clamping rod (14) and a connecting top plate (15); the two ends of the positioning top plate (11) are provided with symmetrical connecting grooves (12), the openings of the connecting grooves (12) are flush with the two ends of the positioning top plate (11); the L-shaped clamping rod (14) has two rods, the vertical rods of the two L-shaped clamping rods (14) are respectively symmetrically hinged to the openings of the connecting grooves (12) through hinge shafts (13), and the horizontal plates of the two L-shaped clamping rods (14) are located below the positioning top plate (11) for clamping; the connecting top plate (15) is transversely arranged on the top of the vertical rods of the two L-shaped clamping rods (14), one end of the connecting top plate (15) is hingedly connected with the top end of the vertical rod of one L-shaped clamping rod (14) and can horizontally rotate, and the side surface of the other end of the connecting top plate (15) is provided with a connecting groove (18) which can be hung on the connecting bolt on the top end of the vertical rod of the other L-shaped clamping rod (14); the top surface of the positioning top plate (11) abuts against the top surface of the silica gel pad (6), the inner side surfaces of the vertical rods of the two L-shaped clamping rods (14) abut against the flush end surfaces of the silica gel pad (6) and the forming mold (2), and the horizontal plates of the two L-shaped clamping rods (14) are clamped in the bottom clamping groove (4) at the bottom of the forming mold (2).

5. The shaft lead resistance forming apparatus of claim 1, wherein: The outer contour of the section (19) of the shaped tyre (2) is an H shape with a wide upper end and a narrow lower end, the upper end of the section (19) is a circular arc (20) of the two symmetrical arc surfaces (5), and the waist line (21) on both sides of the section (19) is an inwardly inclined slant line.

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