A relay contact spot welding fixture

Abstract

The present invention relates to the technical field of relay contact processing, and in particular to a relay contact spot welding fixture, comprising a box body and a contact assembly, a positioning assembly is arranged at the bottom of the inner cavity of the box body, and the bottom of the contact assembly is located in the positioning assembly, a clamping mechanism is fixedly installed on the left and right side walls of the inner cavity of the box body, and the output end of the clamping mechanism abuts against the left and right sides of the contact assembly, and support assemblies are symmetrically arranged on the left and right sides of the positioning assembly, and the upper end of the support assembly abuts against the contact assembly. The relay contact spot welding fixture fixes the terminals outside the relay through the positioning mechanism to pre-position the contact assembly, fixes the relay housing through the clamping mechanism to fix the contact assembly as a whole, fixes the contact seat through the supporting assembly to fix the processing part of the contact assembly, and the fixture performs multi-stage fixation on the contact assembly to make the contact sheet more stable during the spot welding process.

Description

Technical Field

[0001] The invention relates to the technical field of relay contact processing, and in particular to a relay contact spot welding fixture. Background Art

[0002] Relay contacts are an important part inside the relay, used to transmit or disconnect current. Relay contacts are generally made of conductive materials and are usually fixed to the contact seat by welding. However, during the welding process, in order to keep the contacts stable, a clamp is needed to fix the contacts.

[0003] The existing relay contact spot welding fixture only fixes the relay, while the existing relay is often provided with multiple groups of contacts inside to realize multi-terminal control. Before spot welding, the multiple groups of contact pieces are placed on the contact seat, and the contact pieces are spot welded in turn using a spot welding gun. The spot welding gun spot welds one contact piece at a time. To complete the spot welding of multiple groups of contact pieces, it is necessary to manually move the position of the fixture continuously and change the spot welding position, resulting in low processing efficiency. In addition, the shape of the internal structure of the relay is irregular. If the outer shell of the relay is clamped alone, the processing position cannot be well clamped during the spot welding process. In addition, during spot welding, the contact piece is hit by the spot welding gun and is easily separated from the contact seat. Therefore, the present invention provides a relay contact spot welding fixture. Summary of the invention

[0004] 1. Technical Problems to be Solved: The present invention provides a relay contact spot welding fixture that can solve the problems mentioned in the above background technology.

[0005] 2. Technical solution: To achieve the above purpose, the present invention adopts the following technical solution: a relay contact spot welding fixture, including a box body and a contact assembly, a positioning assembly is arranged at the bottom of the inner cavity of the box body, and the bottom of the contact assembly is located in the positioning assembly, the left and right side walls of the inner cavity of the box body are respectively fixedly installed with clamping mechanisms, and the output end of the clamping mechanism abuts against the left and right sides of the contact assembly, the left and right sides of the positioning assembly are symmetrically provided with supporting assemblies, and the upper end of the supporting assembly abuts against the contact assembly, a moving plate is slidably connected to the bottom of the box body, and a first transposition mechanism is installed above the moving plate, and the first transposition mechanism is fixedly connected to the box body, a bottom plate is arranged below the moving plate, and a second transposition mechanism is arranged between the moving plate and the bottom plate;

[0006] The positioning assembly comprises knobs symmetrically arranged on the front wall of the box body, the knobs are respectively axially fixedly connected to lead screws, and the lead screws are respectively threadedly connected to positioning plates, and the upper ends of the positioning plates are each provided with positioning grooves;

[0007] The supporting assembly includes a plate group fixedly connected on the left and right sides of the positioning plate, the plate group is composed of two C-shaped plates, the upper end of the C-shaped plate is provided with a convex groove, and an I-shaped plate is slidably connected in the convex groove, a paddle plate is fixedly connected to the top of the I-shaped plate, a sliding rod is fixedly connected to one side of the paddle plate, and the sliding rod is slidably inserted into the adjacent paddle plate, and a magnet is fixedly connected to one end of the I-shaped plate.

[0008] Preferably, the contact assembly comprises a relay housing, a plurality of contact seats are fixedly connected to the upper end of the relay housing, and contact sheets are arranged on the contact seats, and a plurality of terminals are fixedly connected to the lower end of the relay housing.

[0009] Preferably, the clamping mechanism comprises a cylinder fixedly mounted on the side wall of the inner cavity of the box body, the output end of the cylinder is fixedly connected to a pressure plate, sliding sleeves at both ends of the pressure plate are provided with guide rods, and one end of the guide rod is fixedly connected to a clamping plate, and a spring is connected between the clamping plate and the pressure plate.

[0010] Preferably, the first shifting mechanism includes a first motor fixedly mounted on the upper end of the movable plate, the output shaft of the first motor is connected to a driving pin and a convex locking arc through a coupling, a first slot plate is fixedly connected to one side of the box body, a plurality of radial slots and a plurality of concave locking arcs are provided on the first slot plate, the driving pin cooperates with the radial slots, and the convex locking arc and the concave locking arc cooperate with each other.

[0011] Preferably, the second shifting mechanism includes a second motor fixedly mounted on the upper end of the base plate, the output shaft of the second motor is connected to a half gear through a coupling, the half gear is meshingly connected to a toothed plate, and one end of the toothed plate is fixedly connected to a second slot plate, a wheel groove is formed on the second slot plate, a pulley is clamped in the wheel groove, and the pulley is fixedly connected to the bottom center of the movable plate.

[0012] Preferably, the two lead screws are partially threaded, and the rest is a smooth rod, and the threaded portions of the two lead screws are staggered, and the two positioning plates are respectively threadedly connected to the corresponding lead screws and slidably sleeved on the smooth rod portion of the other lead screw.

[0013] Preferably, a flexible pad is bonded to one side of the clamping plate close to the contact assembly.

[0014] Preferably, a first sliding groove is opened in the left and right directions on the upper end of the movable plate, and a first sliding pin is fixedly connected to the bottom of the box body, and the first sliding pin is located inside the corresponding first sliding groove.

[0015] Preferably, side support plates are symmetrically installed above the bottom plate, a second sliding pin is fixedly connected to the upper end of the side support plate, a second sliding groove is opened at the bottom of the movable plate, and the second sliding pin is located inside the corresponding second sliding groove.

[0016] 3. Beneficial effects:

[0017] 1. The relay contact spot welding fixture fixes the terminals outside the relay through a positioning mechanism to pre-position the contact assembly, fixes the relay housing through a clamping mechanism to fix the contact assembly as a whole, fixes the contact seat through a supporting assembly to fix the processing part of the contact assembly, and the fixture fixes the contact assembly at multiple levels to make the contact sheet more stable during the spot welding process.

[0018] 2. The relay contact spot welding fixture drives the box to move left and right through the first transposition mechanism to transpose the contact piece in the left and right direction, and drives the movable plate to move forward and backward through the second transposition mechanism to transpose the contact piece in the forward and backward direction. The process of driving the contact piece by the first transposition mechanism and the second transposition mechanism and the time required for spot welding of the contact piece are coordinated with each other, and the contact piece is spot welded continuously to improve the efficiency of spot welding.

[0019] 3. The relay contact spot welding fixture adjusts the support component synchronously during the process of adjusting the positioning component, so that the support component cooperates with the contact seat, thereby improving the application range of the support component, and the support component abuts against the contact sheet to prevent the contact sheet from falling off during spot welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal structure of the box body of the present invention.

[0023] Figure 3 Schematic diagram of the contact assembly of the present invention.

[0024] Figure 4 It is a schematic diagram of the positioning component of the present invention.

[0025] Figure 5 It is a schematic diagram of the clamping mechanism of the present invention.

[0026] Figure 6 It is a schematic diagram of the support assembly of the present invention.

[0027] Figure 7 The present invention Figure 6 Enlarged view of point A in the middle.

[0028] Figure 8 It is a schematic diagram of the first transposition mechanism of the present invention.

[0029] Fig. 9 The present invention Figure 8 Enlarged view of point B.

[0030] Fig.10 Schematic diagram of the second transposition mechanism of the present invention.

[0031] Fig.11 The present invention Fig.10 Enlarged view of point C in the middle.

[0032] Reference numerals: 1. box body;

[0033] 2. Contact assembly; 21. Relay housing; 22. Contact seat; 23. Contact sheet; 24. Terminal;

[0034] 3. Positioning assembly; 31. Knob; 32. Lead screw; 33. Positioning plate; 34. Positioning slot;

[0035] 4. Clamping mechanism; 41. Cylinder; 42. Pressing plate; 43. Guide rod; 44. Clamping plate; 45. Spring;

[0036] 5. Support assembly; 50. Plate assembly; 51. C-shaped plate; 52. Convex groove; 53. I-shaped plate; 54. Paddle plate; 55. Slide rod; 56. Magnet;

[0037] 6. Mobile board;

[0038] 7. First shifting mechanism; 71. First motor; 72. Toggle pin; 73. Convex locking arc stop; 74. First slot plate; 75. Radial slot; 76. Concave locking arc stop; 77. First slide slot; 78. First slide pin;

[0039] 8. Bottom plate;

[0040] 9. Second shifting mechanism; 91. Side support plate; 92. Second sliding pin; 93. Second sliding slot; 94. Second motor; 95. Half gear; 96. Tooth plate; 97. Second slot plate; 98. Wheel slot; 99. Pulley. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0042] See also Figure 1-Figure 3A relay contact spot welding fixture provided according to an embodiment of the present invention comprises a box body 1 and a contact assembly 2, a positioning assembly 3 is provided at the bottom of the inner cavity of the box body 1, and the bottom of the contact assembly 2 is located in the positioning assembly 3, a clamping mechanism 4 is fixedly installed on the left and right side walls of the inner cavity of the box body 1, and the output end of the clamping mechanism 4 abuts against the left and right sides of the contact assembly 2, a supporting assembly 5 is symmetrically provided on the left and right sides of the positioning assembly 3, and the upper end of the supporting assembly 5 abuts against the contact assembly 2, a moving plate 6 is slidably connected to the lower part of the box body 1, and a first transposition mechanism 7 is installed above the moving plate 6, and the first transposition mechanism 7 is fixedly connected to the box body 1, a bottom plate 8 is provided below the moving plate 6, and a second transposition mechanism 9 is provided between the moving plate 6 and the bottom plate 8; the contact assembly 2 comprises a relay housing 21, a plurality of contact seats 22 are fixedly connected to the upper end of the relay housing 21, and contact sheets 23 are provided on the contact seats 22, and a plurality of terminals 24 are fixedly connected to the lower end of the relay housing 21.

[0043] When working, the device is placed on a work surface for spot welding, and the distance of the positioning component 3 is adjusted first, so that the positioning component 3 and the terminal 24 at the bottom of the contact component 2 are matched, and the terminal 24 is plugged into the positioning component 3, and then the clamping mechanism 4 clamps the relay housing 21 of the contact component 2, and then the support component 5 is slid to abut against the contact sheet 23. When the positioning component 3 is adjusted in distance, the support component 5 moves synchronously with the positioning component 3, and when the positioning component 3 is matched with the terminal 24, the support component 5 and the contact sheet 23 are in contact with each other. The first switching mechanism 7 drives the box body 1 to move in intervals in the left and right directions, and the second switching mechanism 9 drives the movable plate 6 to move in intervals in the front and rear directions, so that the contact assembly 2 in the box body 1 moves in intervals in two directions, and the contact pieces 23 are spot-welded continuously. Then, the device is turned by hand to make another row of contact pieces 23 cooperate with the spot welding gun, and the contact pieces 23 are spot-welded by the first switching mechanism 7 and the second switching mechanism 9.

[0044] See also Figure 3 and Figure 4 The positioning assembly 3 includes knobs 31 symmetrically arranged on the front wall of the box body 1, the knobs 31 are axially fixedly connected with screws 32, and the screws 32 are respectively threadedly connected with positioning plates 33, and the upper ends of the positioning plates 33 are provided with positioning grooves 34. The two screws 32 are partially threaded, and the rest are smooth rods, and the threaded parts of the two screws 32 are staggered with each other. The two positioning plates 33 are respectively threadedly connected to the corresponding screws 32 and slidably sleeved on the smooth rod part of the other screw 32.

[0045] During operation, adjust the positioning assembly 3 to cooperate with the contact assembly 2, and place the contact assembly 2 on the positioning assembly 3. Specifically, turn the knob 31 to move the positioning plate 33 on the screw 32 (the left knob 31 turns clockwise, the front positioning plate 33 moves forward, the right knob 31 turns clockwise, the rear positioning plate 33 moves forward) until the distance between the two positioning plates 33 is equal to the distance between the two rows of terminals 24, and then insert the terminal 24 into the positioning slot 34.

[0046] See also Figure 1 and Figure 5 The clamping mechanism 4 includes a cylinder 41 fixedly mounted on the inner side wall of the box body 1, a pressing plate 42 is fixedly connected to the output end of the cylinder 41, and guide rods 43 are provided on both ends of the pressing plate 42. The guide rods 43 can only slide left and right along the pressing plate 42 and cannot rotate;

[0047] One end of the guide rod 43 is fixedly connected to a clamping plate 44 , a spring 45 is connected between the clamping plate 44 and the pressure plate 42 , and a flexible pad is bonded to one side of the clamping plate 44 close to the contact assembly 2 .

[0048] During operation, the clamping mechanism 4 clamps the relay housing 21. Specifically, the cylinder 41 performs process work to push the pressure plate 42 to move toward the relay housing 21 until the clamping plate 44 abuts against the relay housing 21. At this time, the cylinder 41 continues to perform process work, and the clamping plate 44 compresses the spring 45. The elastic potential energy generated by the compression of the spring 45 pushes the clamping plate 44 to clamp the relay housing 21. In the process of clamping the relay housing 21, the relay housing 21 is slowly clamped by the deformation of the spring 45 to prevent damage to the relay housing 21, and the flexible pad is in contact with the relay housing 21 to protect the surface of the relay housing 21.

[0049] See also Figure 3 , Figure 4 , Figure 6 and Figure 7 The support assembly 5 includes a plate group 50 fixedly connected to the left and right sides of the positioning plate 33. The plate group 50 is composed of two C-shaped plates 51. A convex groove 52 is opened on the upper end of the C-shaped plate 51, and an I-shaped plate 53 is slidably connected in the convex groove 52. A dial plate 54 is fixedly connected above the I-shaped plate 53. A sliding rod 55 is fixedly connected to one side of the dial plate 54, and the sliding rod 55 is slidably inserted into the adjacent dial plate 54. A magnet 56 is fixedly connected to one end of the I-shaped plate 53.

[0050] During operation, the positioning component 3 drives the supporting component 5 to cooperate with the contact seat 22, and the supporting component 5 abuts against the contact piece 23 on the contact seat 22. Specifically, when the positioning component 3 adjusts the positioning plate 33 to cooperate with the terminal 24, the C-shaped plate 51 and the positioning plate 33 move synchronously, and the shift plate 54 above the C-shaped plate 51 move away from each other until the C-shaped plate 51 cooperates with the contact seat 22. At this time, the I-shaped plate 53 is slid so that the I-shaped plate 53 is stuck between the two rows of contact seats 22, and the contact piece 23 on the contact seat 22 is abutted to prevent the contact piece 23 from moving or even falling off when the contact piece 23 is spot-welded.

[0051] See also Figure 1 , Figure 3 , Figure 8 and Fig. 9 The first shifting mechanism 7 includes a first motor 71 fixedly installed on the upper end of the moving plate 6. The output shaft of the first motor 71 is connected to a toggle pin 72 and a convex locking arc 73 through a coupling. A first slot plate 74 is fixedly connected to one side of the box body 1. The first slot plate 74 is provided with a plurality of radial slots 75 and a plurality of concave locking arcs 76. The toggle pin 72 cooperates with the radial slots 75, and the convex locking arc 73 and the concave locking arc 76 cooperate with each other. A first sliding groove 77 is provided in the left and right directions of the upper end of the moving plate 6. A first sliding pin 78 is fixedly connected to the bottom of the box body 1, and the first sliding pin 78 is located inside the corresponding first sliding groove 77.

[0052] During operation, the first shifting mechanism 7 drives the box body 1 to move left and right, so that the contact piece 23 moves left and right. Specifically, the first motor 71 works to drive the toggle pin 72 to rotate, and the toggle pin 72 enters the radial groove 75, exerting a force on the first slot plate 74. Since the first slide groove 77 on the movable plate 6 guides and limits the first slide pin 78 at the bottom of the box body 1, the first slot plate 74 drives the box body 1 to move left and right, so that the contact piece 23 moves left and right, and the convex locking arc 73 and the concave locking arc 76 cooperate to lock the first slot plate 74 between the toggle pin 72 turning out of the radial groove 75 and the next time it enters the radial groove 75, and the distance that the toggle pin 72 drives the first slot plate 74 to move is equal to the distance between adjacent contact pieces 23.

[0053] See also Figure 1 , Figure 3 , Fig.10 and Fig.11The second shifting mechanism 9 includes a second motor 94 fixedly mounted on the upper end of the base plate 8, the output shaft of the second motor 94 is connected to a half gear 95 through a coupling, the half gear 95 is meshedly connected to a toothed plate 96, and one end of the toothed plate 96 is fixedly connected to a second slot plate 97, a wheel groove 98 is provided on the second slot plate 97, a pulley 99 is clamped in the wheel groove 98, and the pulley 99 is fixedly connected to the bottom center of the moving plate 6, a side support plate 91 is symmetrically installed above the base plate 8, a second sliding pin 92 is fixedly connected to the upper end of the side support plate 91, a second slide groove 93 is provided at the bottom of the moving plate 6, and the second slide pin 92 is located inside the corresponding second slide groove 93.

[0054] During operation, the second shifting mechanism 9 drives the movable plate 6 to move forward and backward, so that the contact piece 23 moves forward and backward. Specifically, the second motor 94 drives the tooth plate 96 to move left and right through the half gear 95, so that the second slot plate 97 moves left and right, so that the second slot plate 97 applies a force to the movable plate 6. Since the second sliding pin 92 on the side support plate 91 guides and limits the second sliding slot 93 on the movable plate 6, and the wheel groove 98 on the second slot plate 97 guides and limits the pulley 99 at the bottom of the movable plate 6, the second slot plate 97 drives the movable plate 6 to move forward and backward, so that the contact piece 23 moves forward and backward, and the half gear 95 engages with the tooth plate 96 once to drive the second slot plate 97 to move a distance that is equal to the distance between the contact piece 23 and the welding gun.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A relay contact spot welding fixture, comprising a housing (1) and a contact assembly (2), characterized in that: A positioning assembly (3) is provided at the bottom of the inner cavity of the box body (1), and the bottom of the contact assembly (2) is located in the positioning assembly (3). Clamping mechanisms (4) are fixedly installed on the left and right side walls of the inner cavity of the box body (1), and the output end of the clamping mechanism (4) abuts against the left and right sides of the contact assembly (2). Support assemblies (5) are symmetrically provided on the left and right sides of the positioning assembly (3), and the upper end of the support assembly (5) abuts against the contact assembly (2). A movable plate (6) is slidably connected to the bottom of the box body (1), and a first movable plate (6) is installed above the movable plate (6). a shifting mechanism (7), wherein the first shifting mechanism (7) is fixedly connected to the box body (1), a bottom plate (8) is arranged below the movable plate (6), and a second shifting mechanism (9) is arranged between the movable plate (6) and the bottom plate (8); the positioning assembly (3) comprises knobs (31) symmetrically arranged on the front wall of the box body (1), the knobs (31) are respectively axially fixedly connected to lead screws (32), and the lead screws (32) are respectively threadedly connected to positioning plates (33), and the upper ends of the positioning plates (33) are each provided with positioning grooves (34); The support assembly (5) comprises a plate group (50) fixedly connected to the left and right sides of the positioning plate (33), the plate group (50) being composed of two C-shaped plates (51), the upper end of the C-shaped plate (51) being provided with a convex groove (52), and an I-shaped plate (53) being slidably connected in the convex groove (52), a shift plate (54) being fixedly connected above the I-shaped plate (53), a sliding rod (55) being fixedly connected to one side of the shift plate (54), and the sliding rod (55) being slidably inserted into the interior of an adjacent shift plate (54), and a magnet (56) being fixedly connected to one end of the I-shaped plate (53); The contact assembly (2) comprises a relay housing (21), a plurality of contact seats (22) being fixedly connected to the upper end of the relay housing (21), and a contact sheet (23) being provided on each of the contact seats (22), and a plurality of terminals (24) being fixedly connected to the lower end of the relay housing (21); The terminals (24) outside the relay are fixed by the positioning assembly (3), the relay housing (21) is fixed by the clamping mechanism (4), the contact seat (22) is fixed by the supporting assembly (5), and the contact assembly is fixed in multiple stages; the housing (1) is driven to move left and right by the first transposition mechanism (7), and the contact assembly (2) is transposed in the left and right directions; the moving plate (6) is driven to move forward and backward by the second transposition mechanism (9), and the contact assembly (2) is transposed in the front and back directions; the first transposition mechanism and the second transposition mechanism cooperate with each other to continuously spot weld the contact sheet (23).

2. A relay contact spot welding fixture according to claim 1, characterized in that: The clamping mechanism (4) comprises a cylinder (41) fixedly mounted on the inner cavity side wall of the box body (1); a pressure plate (42) is fixedly connected to the output end of the cylinder (41); guide rods (43) are provided on sliding sleeves at both ends of the pressure plate (42); one end of the guide rod (43) is fixedly connected to a clamping plate (44); and a spring (45) is connected between the clamping plate (44) and the pressure plate (42).

3. A relay contact spot welding fixture according to claim 1, characterized in that: The first shifting mechanism (7) comprises a first motor (71) fixedly mounted on the upper end of the moving plate (6); the output shaft of the first motor (71) is connected to a driving pin (72) and a convex locking arc (73) via a coupling; a first slot plate (74) is fixedly connected to one side of the housing (1); a plurality of radial slots (75) and a plurality of concave locking arcs (76) are formed on the first slot plate (74); the driving pin (72) and the radial slots (75) cooperate with each other; and the convex locking arc (73) and the concave locking arc (76) cooperate with each other.

4. A relay contact spot welding fixture according to claim 1, characterized in that: The second shifting mechanism (9) comprises a second motor (94) fixedly mounted on the upper end of the base plate (8); the output shaft of the second motor (94) is connected to a half gear (95) via a coupling; the half gear (95) is meshingly connected to a toothed plate (96); one end of the toothed plate (96) is fixedly connected to a second slot plate (97); a wheel groove (98) is formed on the second slot plate (97); a pulley (99) is clamped in the wheel groove (98); and the pulley (99) is fixedly connected to the center of the bottom of the movable plate (6).

5. A relay contact spot welding fixture according to claim 1, characterized in that: The two lead screws (32) are partially threaded, and the rest is a smooth rod, and the threaded portions of the two lead screws (32) are interlaced with each other. The two positioning plates (33) are respectively threadedly connected to the corresponding lead screws (32) and slidably sleeved on the smooth rod portion of the other lead screw (32).

6. A relay contact spot welding fixture according to claim 2, characterized in that: A flexible pad is bonded to one side of the clamping plate (44) close to the contact assembly (2).

7. A relay contact spot welding fixture according to claim 3, characterized in that: A first sliding groove (77) is provided on the upper end of the movable plate (6) in the left-right direction, and a first sliding pin (78) is fixedly connected to the bottom of the box body (1), and the first sliding pin (78) is located inside the corresponding first sliding groove (77).

8. A relay contact spot welding fixture according to claim 4, characterized in that: A side support plate (91) is symmetrically installed above the bottom plate (8), a second sliding pin (92) is fixedly connected to the upper end of the side support plate (91), a second sliding groove (93) is opened at the bottom of the movable plate (6), and the second sliding pin (92) is located inside the corresponding second sliding groove (93).

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