CN113967780A - Relay support spot welding fixture - Google Patents
Relay support spot welding fixture Download PDFInfo
- Publication number
- CN113967780A CN113967780A CN202111209687.6A CN202111209687A CN113967780A CN 113967780 A CN113967780 A CN 113967780A CN 202111209687 A CN202111209687 A CN 202111209687A CN 113967780 A CN113967780 A CN 113967780A
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- Prior art keywords
- pressing
- yoke
- block
- adjusting
- magnetic circuit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
Abstract
The invention provides a spot welding fixture for a relay bracket, which comprises a fixture body, an upper pressing mechanism, a lower pressing mechanism and a yoke adjusting mechanism, wherein a cavity for accommodating an electromagnetic mechanism of a relay is arranged in the center of the fixture body, the upper pressing mechanism and the lower pressing mechanism comprise yoke pressing elastic pins, the yoke pressing elastic pins are arranged at the lower part of the cavity of the fixture body, the yoke adjusting mechanism comprises a differential head and a yoke adjusting block, the differential head is arranged at the upper part of the fixture body, the yoke adjusting block is slidably arranged in the cavity, the telescopic end of the differential head is inserted into the inner cavity of the fixture body and connected with the upper end of the yoke adjusting block, a lug is arranged at the end part of the yoke adjusting block downwards, and the yoke pressing elastic pins and the lug are arranged at the same side in the inner cavity. The invention provides a spot welding fixture for a relay bracket, which realizes high-precision adjustment and control of a magnetic circuit gap, improves the electromagnetic parameter control capability of a relay, reduces the dependence on the machining precision of parts, completes two times of welding by one-time clamping, ensures the positioning precision, improves the welding efficiency, and improves the product qualification rate and the quality consistency.
Description
Technical Field
The invention belongs to the technical field of relay manufacturing, and particularly relates to a spot welding fixture for a relay bracket.
Background
The relay is divided into an electromagnetic mechanism and a contact system, the electromagnetic mechanism comprises a magnetic circuit combination, a third yoke, magnetic steel and a bracket, the magnetic circuit combination, the third yoke and the magnetic steel are assembled together by spot welding through a front bracket and a rear bracket, as shown in figure 1, a first yoke, a second yoke and an armature are assembled at two sides of a coil in the magnetic circuit combination, the third yoke and the magnetic steel are assembled at one side of the second yoke, a magnetic circuit gap between the second yoke, the armature and the third yoke is ensured in the spot welding process, in the prior art, a Chinese patent with the publication number of CN107931922A provides a clamp for the spot welding of the armature combination of the relay, a magnetic circuit combination part is placed in the clamp in the welding process, spot welding is carried out after clamping, the magnetic circuit gap is ensured after being attached to the clamp, adjustment cannot be carried out, the size of the clamp is relatively fixed, when the dimensional tolerance of the part is larger, the control fluctuation of the magnetic circuit gap is larger, the requirement on part processing is high. Meanwhile, in the prior art, the spot welding support of the electromagnetic mechanism can only be performed in a single-side spot welding mode, namely, the support on one side is firstly spot-welded, and the support on the other side is clamped for spot welding in a positioning mode after the position of the yoke is adjusted. The spot welding process has the advantages that the clamp is simple in design, and the problems of poor positioning precision and low welding efficiency caused by the fact that clamping positioning and welding are required twice are solved, and the improvement of the production efficiency and the qualification rate of products is restricted.
Disclosure of Invention
In order to solve the technical problems, the invention provides a spot welding fixture for a relay bracket, which realizes high-precision adjustment and control of a magnetic circuit gap, improves the electromagnetic parameter control capability of a relay, reduces the dependence on the part machining precision, completes two times of welding by one-time clamping, ensures the positioning precision, improves the welding efficiency, and improves the product qualification rate and the quality consistency.
The invention is realized by the following technical scheme:
the utility model provides a relay support spot welding anchor clamps, including the anchor clamps body, hold-down mechanism and yoke adjustment mechanism from top to bottom, the anchor clamps body center sets up the cavity that holds relay electromagnetism mechanism, hold-down mechanism includes that the yoke compresses tightly the bullet pin from top to bottom, the yoke compresses tightly the bullet pin and installs in the specific cavity lower part of anchor clamps, yoke adjustment mechanism includes differential head and yoke regulating block, differential head installs on anchor clamps body upper portion, yoke regulating block slidable mounting is in the cavity, the flexible end of differential head inserts anchor clamps internal chamber and is connected with yoke regulating block upper end, the tip of yoke regulating block is provided with the lug downwards, the yoke compresses tightly bullet pin and lug and sets up in same one side along the left right direction in the inner chamber. When welding, the magnetic circuit combination of the relay is placed in a cavity of the fixture body, the third yoke and the magnetic steel are placed on one side of a yoke pressing elastic pin, the yoke pressing elastic pin upwards abuts against the third yoke to enable the third yoke to sequentially abut against the armature and the second yoke, the magnetic circuit gap is zero at the moment, the micro-head is adjusted to drive a yoke adjusting block to move downwards, a convex block of the yoke adjusting block is enabled to touch the third yoke, the reading of the micro-head is marked as A (namely initial '0' scale), the micro-head is continuously rotated to enable the convex block to push the third yoke to move downwards, the magnetic circuit gap is generated among the third yoke, the armature and the second yoke, the reading of the micro-head is marked as B at the moment, when the reading difference value (B-A) of the micro-head of two times is equal to the required specified magnetic circuit gap value, bracket spot welding is carried out, the high-precision control of the magnetic circuit gap is realized, and the electromagnetic parameter control capability of the relay is improved, the dependence on the machining precision of the parts is reduced, and the product qualification rate and the quality consistency are improved.
The upper and lower pressing mechanisms also comprise a pressing adjusting screw rod and a magnetic circuit pressing pushing block, the pressing adjusting screw rod is connected with the upper part of the clamp body in a screwing way, the lower end of the pressing adjusting screw rod is connected with the magnetic circuit pressing pushing block, the magnetic circuit pressing pushing block is installed on the guiding sliding rail in a sliding way, a through hole is axially arranged at the center of the pressing adjusting screw rod, a differential head is installed at the upper part of the through hole, the yoke adjusting mechanism also comprises an adjusting connecting rod and a reset spring, the adjusting connecting rod is installed in the through hole in a sliding way, the reset spring is sleeved on the outer ring of the adjusting connecting rod to enable the upper end surface of the adjusting connecting rod to abut against the lower end surface of a telescopic head of the differential head, a abdicating groove is arranged at the center of the magnetic circuit pressing pushing block, the lower end of the adjusting connecting rod extends into the abdicating groove, the yoke adjusting block is installed on the magnetic circuit pressing pushing block in a sliding way, the lower end of the adjusting connecting rod is connected with the yoke adjusting block, the pressing adjusting screw rod is rotated to drive the magnetic circuit pressing pushing block to move up and down, the clamping and the loosening of the magnetic circuit combination are realized, and the adjusting connecting rod is jacked to move downwards by rotating the differential head to drive the yoke adjusting block to move downwards; when the rotating differential head is reset, the reset spring drives the adjusting connecting rod to move upwards again, and the position adjustment of the third yoke is realized. The two sets of control structures of magnetic circuit combination limiting and third yoke position adjusting are simultaneously realized in the up-down direction, and the operation is convenient.
Further, yoke adjustment mechanism still includes the connecting block, and the groove of stepping down is inserted in the connecting block middle part, connecting block both ends and yoke regulating block fixed connection, and terminal surface and the groove tank bottom of stepping down are provided with pressure spring under the connecting block between, and the connecting block up end supports and leans on terminal surface under the adjusting link, when the rotation differential head resets, realizes that the yoke regulating block shifts up and resets.
Still compress tightly the ejector pad including the support, the magnetic circuit compresses tightly the groove lower part opening both sides of stepping down of ejector pad and is provided with waist type spout, and the support compresses tightly the upper portion of ejector pad and passes through the spacer pin and install in waist type spout, and compression spring sets up and compresses tightly between ejector pad and the connecting block at the support, and the support compresses tightly the ejector pad lower extreme and is provided with limit baffle along the fore-and-aft direction, plays the elasticity and rises tightly the effect, is convenient for pack into the support.
The differential head mounting block is arranged on the lower portion of the differential head and fixed in a through hole of the compression adjusting screw rod through a set screw.
Still include magnetic circuit combination stopper and support stopper, anchor clamps body cavity lower part is provided with the support locating piece, and magnetic circuit combination stopper is fixed at support locating piece both ends along the fore-and-aft direction, and the support stopper is fixed at anchor clamps body both ends along the fore-and-aft direction, and the joint support compresses tightly stop gear around the ejector pad constitution, can two supports of clamping simultaneously, and twice welding is accomplished to a clamping, has guaranteed positioning accuracy, improves welding efficiency, further guarantees product quality.
The lower end of the pressing adjusting screw rod is provided with a recess, the upper end of the magnetic circuit pressing pushing block is provided with a convex hull, and the convex hull is embedded in the recess.
The upper and lower pressing mechanisms further comprise elastic pin installation seats, magnets are embedded in the elastic pin installation seats and attracted to the outer side of the lower portion of the clamp body through magnetic force, and the lower ends of the elastic pins pressed by the yoke iron penetrate through the lower portion of the clamp body and are embedded in the elastic pin installation seats.
The magnetic circuit combination, the magnetic steel and the third yoke are limited and fixed from the left side and the right side, and positioning accuracy is guaranteed.
Furthermore, the left and right pressing mechanism comprises guide installation seats, positioning blocks, positioning screws, pressing blocks and pressing screws, the two guide installation seats are fixed on the left and right sides of the cavity of the fixture body respectively, the positioning blocks and the pressing blocks are arranged on the left and right sides of the cavity of the fixture body in a sliding mode respectively and extend into the cavity, the positioning screws are screwed with the guide installation seats on the same side of the positioning blocks, the end portions of the positioning screws are connected with the positioning blocks, the pressing screws are screwed with the guide installation seats on the same side of the pressing blocks, and the end portions of the pressing screws are connected with the pressing blocks.
The invention has the beneficial effects that:
compared with the prior art, through setting up front and back stop gear, control hold-down mechanism, upper and lower hold-down mechanism and yoke adjustment mechanism on the anchor clamps main part, adopt front and back stop gear to implement magnetic circuit combination and support front and back location, adopt upper and lower hold-down mechanism to implement upper and lower location, adopt yoke adjustment mechanism to implement the accurate position location of yoke, guaranteed the magnetic circuit clearance, adopt left and right hold-down mechanism to implement side direction location and final fixation, accomplish the magnetic circuit combination of relay, the centre gripping and the location of third yoke, magnet steel and support, realize the high accuracy regulation and control of magnetic circuit clearance, improve the electromagnetic parameter control ability of relay, reduce the dependence to part machining precision, twice welding is accomplished in clamping once, guaranteed the positioning accuracy, improve welding efficiency, improved product qualification rate and quality uniformity.
Drawings
FIG. 1 is a schematic diagram of an electromagnetic mechanism requiring spot welding according to the present invention;
FIG. 2 is a schematic view showing the construction of a spot welding jig according to the present invention;
FIG. 3 is a view of the structure in the direction A-A in FIG. 2;
FIG. 4 is a view of the structure in the direction B-B in FIG. 3;
FIG. 5 is a schematic view showing a structure in a state where a magnetic path gap is 0 in spot welding of the bracket according to the present invention;
fig. 6 is a schematic structural view of the present invention in a state where the gap of the magnetic circuit is adjusted at the time of spot welding of the bracket.
In the figure: 1-a clamp body, 2-a front and back limiting mechanism, 3-a left and right pressing mechanism, 4-an up and down pressing mechanism, 5-a yoke adjusting mechanism, 6-an electromagnetic mechanism, 11-a clamp body, 12-a guide slide rail, 13-a support positioning block, 21-a support pressing push block, 22-a magnetic circuit combination limiting block, 23-a support limiting block, 24-a fixing screw, 25-a limiting pin, 26-a first screw, 31-a guide mounting seat, 32-a positioning block, 33-a positioning screw, 34-a pressing block, 35-a pressing screw, 36-a second screw, 41-a pressing adjusting screw, 411-a recess, 42-a magnetic circuit pressing push block, 421-a convex bag, a yoke pressing elastic pin 43, 44-a magnet and 45-an elastic pin mounting seat, 51-differential head, 52-yoke iron adjusting block, 521-lug, 53-connecting block, 54-differential head mounting block, 55-set screw, 56-adjusting connecting rod, 57-return spring, 58-compression spring, 61-first yoke iron, 62-second yoke iron, 63-third yoke iron, 64-magnetic steel, 65-bracket, 66-ceramic piece and 67-armature iron.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 2 to 4, a spot welding fixture for a relay bracket comprises a fixture body 11, an upper pressing mechanism 4, a lower pressing mechanism 4 and a yoke adjusting mechanism 5, wherein a cavity for accommodating an electromagnetic mechanism of the relay is arranged in the center of the fixture body 11, the upper pressing mechanism 4 and the lower pressing mechanism 4 comprise yoke pressing elastic pins 43, the yoke pressing elastic pins 43 are arranged at the lower part of the cavity of the fixture body 11, the yoke adjusting mechanism 5 comprises differential heads 51 and yoke adjusting blocks 52, the differential heads 51 are arranged at the upper part of the fixture body 11, the yoke adjusting blocks 52 are slidably arranged in the cavity, the telescopic ends of the differential heads 51 are inserted into the inner cavity of the fixture body 11 and connected with the upper ends of the yoke adjusting blocks 52, a convex block 521 is arranged downwards at the end part of the yoke adjusting blocks 52, and the yoke pressing elastic pins 43 and the convex block 521 are arranged on the same side in the inner cavity along the left-right direction.
The left side and the right side of a cavity of the fixture body 11 are provided with guide slide rails 12 along the up-down direction, the up-down pressing mechanism 4 further comprises a pressing adjusting screw rod 41 and a magnetic circuit pressing pushing block 42, the pressing adjusting screw rod 41 is connected with the upper part of the fixture body 11 in a screwing manner, the lower end of the pressing adjusting screw rod 41 is connected with the magnetic circuit pressing pushing block 42, the magnetic circuit pressing pushing block 42 is slidably mounted on the guide slide rails 12, the center of the pressing adjusting screw rod 41 is provided with a through hole along the axial direction, a differential head 51 is mounted on the upper part of the through hole, the yoke adjusting mechanism 5 further comprises an adjusting connecting rod 56 and a return spring 57, the adjusting connecting rod 56 is slidably mounted in the through hole, the outer ring of the adjusting connecting rod 56 is sleeved with the return spring 57 to enable the upper end surface of the adjusting connecting rod 56 to abut against the lower end surface of the telescopic head of the differential head 51, the center of the magnetic circuit pressing pushing block 42 is provided with a abdicating groove, the lower end of the adjusting connecting rod 56 extends into the abdicating groove, the yoke adjusting block 52 is slidably mounted on the magnetic circuit pressing pushing block 42, the lower end of the adjusting link 56 is connected to the yoke adjusting block 52.
The lower part of the differential head 51 is provided with a differential head mounting block 54, and the differential head mounting block 54 is fixed in the through hole of the compression adjusting screw 41 through a set screw 55.
The clamp comprises a clamp body 11 and is characterized by further comprising a front limiting mechanism 2 and a rear limiting mechanism 2, wherein the front limiting mechanism 2 and the rear limiting mechanism 2 comprise a support pressing push block 21, a magnetic circuit combination limiting block 22 and a support limiting block 23, the support pressing push block 21 is fixed at the lower end of the magnetic circuit pressing push block 42, a limiting baffle is arranged at the lower end of the support pressing push block 21 along the front-rear direction, a support positioning block 13 is arranged at the lower portion of a cavity of the clamp body 11, the magnetic circuit combination limiting block 22 is fixed at two ends of the support positioning block 13 along the front-rear direction, and the support limiting block 23 is fixed at two ends of the clamp body 11 along the front-rear direction.
The lower end of the magnetic circuit pressing push block 42 is provided with a groove, the upper end of the support pressing push block 21 is inserted into the groove, and the support pressing push block 21 is fixedly connected with the magnetic circuit pressing push block 42 through a limiting pin 25.
The lower end of the pressing adjusting screw 41 is provided with a recess 411, the upper end of the magnetic circuit pressing push block 42 is provided with a convex hull 421, and the convex hull 421 is embedded in the recess 411.
The upper and lower pressing mechanisms 4 further comprise elastic pin installation seats 45, magnets 44 are embedded in the elastic pin installation seats 45 and attracted to the outer side of the lower portion of the clamp body 11 through magnetic force, and the lower ends of the yoke pressing elastic pins 43 penetrate through the lower portion of the clamp body 11 and are embedded in the elastic pin installation seats 45.
The clamp further comprises a left pressing mechanism 3 and a right pressing mechanism 3, wherein the left pressing mechanism 3 and the right pressing mechanism 3 are arranged on the left side and the right side of the cavity of the clamp body 11.
The left pressing mechanism 3 and the right pressing mechanism 3 comprise guide installation seats 31, positioning blocks 32, positioning screws 33, pressing blocks 34 and pressing screws 35, the two guide installation seats 31 are fixed on the left side and the right side of a cavity of the fixture body 11 respectively, the positioning blocks 32 and the pressing blocks 34 are arranged on the left side and the right side of the cavity of the fixture body 11 in a sliding mode respectively and extend into the cavity, the guide installation seats 31 on the same side of the positioning screws 33 and the positioning blocks 32 are screwed, the end portions of the positioning screws 33 are connected with the positioning blocks 32, the guide installation seats 31 on the same side of the pressing screws 35 and the pressing blocks 34 are screwed, and the end portions of the pressing screws 35 are connected with the pressing blocks 34.
Examples
As shown in fig. 2 to 4, a relay bracket spot welding jig includes a jig main body 1, a front and rear limiting mechanism 2, a left and right pressing mechanism 3, an up and down pressing mechanism 4, and a yoke adjusting mechanism 5.
The clamp main body 1 comprises a clamp body 11, a guide slide rail 12 and a support positioning block 13. The fixture body 11 is a rectangular body with a cavity in the middle, a screw hole is arranged on the upper side of the rectangular body, a light hole is arranged on the lower side of the rectangular body, slide rail holes, screw holes and guide holes are arranged on two side faces of the rectangular body, guide slide rails 12 are arranged on two side walls of the cavity of the fixture body and axially parallel to the screw hole on the upper side of the rectangular body, and a support positioning block 13 is arranged on the lower side of the rectangular body.
The up-down pressing mechanism 4 comprises a pressing adjusting screw rod 41, a magnetic circuit pressing push block 42, a yoke pressing elastic pin 43, a magnet 44 and an elastic pin mounting seat 45. A through hole is axially formed in the center of the pressing adjusting screw 41, a boss is arranged at the upper part of the pressing adjusting screw 41, a recess 411 is arranged at the lower end of the pressing adjusting screw 41, a convex hull 421 is arranged at the upper end of a magnetic circuit pressing push block 42, the convex hull 421 is embedded in the recess 411, waist-shaped sliding grooves are arranged at two sides of the magnetic circuit pressing push block 42 and are installed on the guide sliding rail 12, inner cavities are formed in the left side and the right side of an elastic pin installation seat 45, magnets 44 are embedded in the inner cavities, and the elastic pin installation seat 45 is tightly absorbed at the lower part of the clamp body 11 under the magnetic force action of the magnets 44; the lower end of the yoke pressing spring pin 43 passes through the lower part of the clamp body 11 and is embedded on the spring pin mounting seat.
The front and rear limiting mechanism 2 comprises a support pressing push block 21, a magnetic circuit combination limiting block 22, a support limiting block 23, a fixing screw 24, a limiting pin 25 and a first screw 26. Waist-shaped sliding grooves are formed in two sides of an opening in the lower portion of the abdicating groove of the magnetic circuit pressing pushing block 42, the upper portion of the support pressing pushing block 21 is installed in the waist-shaped sliding grooves through limiting pins 25, and limiting baffles are arranged at the lower end of the support pressing pushing block 21 in the front-back direction; the magnetic circuit combination limiting block 22 is fixed with the clamp main body 1 through a first screw 26 and fixed at two ends of the support positioning block 13 along the front-back direction, and the magnetic circuit combination limiting block 22 is provided with a U-shaped groove for accommodating a rotating shaft of the ceramic part 66; two support stoppers 23 are arranged in tandem on the lower side of the clamp body 11, and the support stoppers 23 are fixed on the lower side of the clamp body 11 by fixing screws 24.
The left and right pressing mechanisms 3 are composed of a guide mounting seat 31, a positioning block 32, a positioning screw 33, a pressing block 34, a pressing screw 35 and a second screw 36. The middle of the guide mounting seat 31 is provided with a screw hole, the positioning block 32 penetrates through a hole on the left side of the clamp body 11 and is connected with the guide mounting seat 31 through a positioning screw 33, the pressing block 34 penetrates through a hole on the right side of the clamp body 11 and is connected with the guide mounting seat 31 through a pressing screw 35, and the guide mounting seat 31 is fixed on the left side and the right side of the clamp body 11 through second screws 36.
The yoke adjusting mechanism 5 includes a differential head 51, a yoke adjusting block 52, a connecting block 53, a differential head mounting block 54, a set screw 55, an adjusting link 56, a return spring 57, and a pressing spring 58. A through hole is formed in the center of the pressing adjusting screw rod 41 along the axial direction, a scale is arranged on the differential head 51, a differential head mounting block 54 is embedded in the head, and the differential head mounting block is fixed to the upper portion of the through hole of the pressing adjusting screw rod 41 through a set screw 55; the adjusting connecting rod 56 is slidably arranged in the through hole, and a return spring 57 is sleeved on the outer ring of the adjusting connecting rod 56 to enable the upper end face of the adjusting connecting rod 56 to abut against the lower end face of the telescopic head of the differential head 51; a abdicating groove is formed in the center of the magnetic circuit pressing pushing block 42, the lower end of the adjusting connecting rod 56 extends into the abdicating groove, the middle part of the connecting block 53 is inserted into the abdicating groove, and a pressing spring 58 is arranged between the lower end surface of the connecting block 53 and the support pressing pushing block 21, so that the upper end surface of the connecting block 53 abuts against the lower end surface of the adjusting connecting rod 56; the two ends of the connecting block 53 are fixedly connected with the yoke adjusting block 52, the yoke adjusting block 52 is slidably mounted on the magnetic circuit pressing pushing block 42, a projection 521 is downwardly arranged at the end of the yoke adjusting block 52, and the yoke pressing spring pin 43 and the projection 521 are arranged on the same side in the left-right direction in the inner cavity of the fixture body 11.
Pack into the 11 inner chambers of anchor clamps bodies with magnetic circuit combination, magnet steel, third yoke during the welding, magnet steel and third yoke are placed and are compressed tightly cotter 43 one side at the yoke, with two supports of relay electromagnetic mechanism, symmetric distribution is on two faces of relay electromagnetic mechanism, and concrete centre gripping location process is as follows:
as shown in fig. 5, the magnetic circuit combination of the relay is placed in the cavity of the fixture body 11, one side of the ceramic piece 66 of the magnetic circuit combination is downward, the rotating shaft thereof is placed in the U-shaped groove of the magnetic circuit combination limiting block 22 to complete front and rear positioning, the left side is tightly attached to the positioning block 32, the pressing adjusting screw 41 is rotated, the pressing adjusting screw 41 pushes the magnetic circuit pressing push block 42 to move along the guide slide rail 12 of the fixture body 1, and the magnetic circuit pressing push block 42 positions the magnetic circuit combination of the relay in the cavity of the fixture body 11 to complete up-down positioning and left-right pre-positioning of the magnetic circuit combination; placing a piece of bracket 65 of the relay behind the clamp main body 1, pushing up the pressing push block 21 by the upper side of the bracket and clamping the pressing push block 21 between the bracket positioning block 13 and the bracket limiting block 23, pressing the bracket to open the push block 21 under the tension action of the pressing spring 58, clamping the bracket, and completing the up-down and left-right positioning of a piece of bracket 65 behind; magnetic steel 64 and a third yoke 63 of the relay are sequentially placed in a cavity of the fixture body 11 between a magnetic circuit combination of the electromagnetic mechanism and the pressing blocks 34 of the left and right pressing mechanisms 3, the pressing screw 35 is rotated, the pressing screw 35 pushes the pressing blocks 34 to slide along guide holes in the right side of the fixture body 11, the pressing blocks 34 sequentially press the third yoke 63 and the magnetic steel 64, the third yoke 63 is made to be tightly attached to the magnetic steel 64, the magnetic steel 64 is made to be tightly attached to the magnetic circuit combination, left and right pre-positioning of the third yoke 63 is completed, and then the pressing screw 35 is slightly loosened; placing the other bracket 65 of the relay in front of the clamp main body 1, pushing up the pressing push block 21 by the upper side of the bracket and clamping the pressing push block 21 between the bracket positioning block 13 and the bracket limiting block 23, under the tension action of the pressing spring 58, pressing the bracket push block 21 to open, clamping the other bracket 65, and completing the up-down and left-right positioning of the front bracket 65; inserting the spring pin mounting seat 45 embedded with the yoke iron pressing spring pin 43 in the upper and lower pressing mechanisms 4 through a bottom hole of the fixture body 11, moving the relay yoke iron upwards under the tension action of the yoke iron pressing spring pin 43, pushing the armature 67 of the magnetic circuit combination to rotate, and finishing the close fitting and positioning of the third yoke iron 63, the armature 67 and the second yoke iron 62 of the relay; rotating the differential head 51 of the yoke adjusting mechanism 5, pushing the adjusting connecting rod 56 by the differential head, pushing the connecting block 53 and the yoke adjusting block 52 by the adjusting connecting rod 56 to move along the magnetic circuit pressing pushing block 42, and recording the reading of the differential head 51 as A (namely, initial '0' scale) when the bump 521 on the right side of the yoke adjusting block 52 contacts the third yoke 63 of the relay; as shown in fig. 6, the differential head 51 of the yoke adjusting mechanism 5 is continuously rotated, the third yoke 63 of the relay moves downward under the pushing of the bump 521 on the right side of the yoke adjusting block 52, at this time, the rotating gap of the armature 67 is the magnetic circuit gap of the electromagnetic mechanism of the relay, at this time, the reading of the differential head 51 is B, the difference (B-a) between the readings of the two differential heads 51 is the magnetic circuit gap of the electrode mechanism, when the difference (B-a) is equal to the required magnetic circuit gap number, it indicates that the position of the third yoke 63 of the electromagnetic mechanism is the position required by the product, finally, the pressing screw 35 is rotated, the pressing block 34 is pushed, and the third yoke 63 of the relay and the magnetic steel 64 are pressed in sequence, and finally, the clamping and positioning of the magnetic circuit combination of the relay, the magnetic steel 64, the third yoke 63 and the bracket 65 of the present invention are completed; and (3) sending the spot welding fixture clamped with the relay magnetic circuit combination, the magnetic steel 64, the third yoke 63 and the bracket 65 into a double-end spot welding machine to complete one-time welding of the two brackets of the relay electromagnetic mechanism.
The invention provides a spot welding fixture for a relay bracket, which is characterized in that a front limiting mechanism, a rear limiting mechanism, a left pressing mechanism, a right pressing mechanism, an upper pressing mechanism, a lower pressing mechanism and a yoke adjusting mechanism are arranged on a fixture main body, the front limiting mechanism and the rear limiting mechanism are adopted to carry out magnetic circuit combination and front and rear positioning of the bracket, the upper pressing mechanism and the lower pressing mechanism are adopted to carry out upper and lower positioning, the yoke adjusting mechanism is adopted to carry out accurate position positioning of the yoke, a magnetic circuit gap is ensured, the left pressing mechanism and the right pressing mechanism are adopted to carry out lateral positioning and final fixing, clamping and positioning of the magnetic circuit combination, the third yoke, magnetic steel and the bracket of the relay are completed, high-precision clamping and control of the magnetic circuit gap are realized, the electromagnetic parameter control capability of the relay is improved, the dependence on the part machining precision is reduced, two times of welding are completed once, the positioning precision is ensured, the welding efficiency is improved, and the product qualification rate and the quality consistency are improved.
Claims (10)
1. The utility model provides a relay support spot welding anchor clamps which characterized in that: comprises a clamp body (11), an upper and lower pressing mechanism (4) and a yoke iron adjusting mechanism (5),
the center of the clamp body (11) is provided with a cavity for accommodating the electromagnetic mechanism of the relay,
the upper and lower pressing mechanisms (4) comprise yoke iron pressing elastic pins (43), the yoke iron pressing elastic pins (43) are arranged at the lower part of the cavity of the clamp body (11),
the yoke adjusting mechanism (5) comprises a differential head (51) and a yoke adjusting block (52), the differential head (51) is installed on the upper portion of the clamp body (11), the yoke adjusting block (52) is installed in the cavity in a sliding mode, the telescopic end of the differential head (51) is inserted into the inner cavity of the clamp body (11) and connected with the upper end of the yoke adjusting block (52), a protruding block (521) is arranged on the end portion of the yoke adjusting block (52) downwards, and a yoke pressing spring pin (43) and the protruding block (521) are arranged on the same side in the inner cavity in the left-right direction.
2. The spot welding fixture for the relay bracket as claimed in claim 1, wherein: the magnetic circuit pressing device is characterized in that guide sliding rails (12) are arranged on the left side and the right side of a cavity of the clamp body (11) in the up-down direction, the up-down pressing mechanism (4) further comprises a pressing adjusting screw rod (41) and a magnetic circuit pressing pushing block (42), the pressing adjusting screw rod (41) is connected with the upper portion of the clamp body (11) in a screwing mode, the lower end of the pressing adjusting screw rod (41) is connected with the magnetic circuit pressing pushing block (42), the magnetic circuit pressing pushing block (42) is installed on the guide sliding rails (12) in a sliding mode, a through hole is formed in the center of the pressing adjusting screw rod (41) in the axial direction, a micro head (51) is installed on the upper portion of the through hole, the yoke adjusting mechanism (5) further comprises an adjusting connecting rod (56) and a return spring (57), the adjusting connecting rod (56) is installed in the through hole in a sliding mode, the adjusting connecting rod (56) is sleeved with an outer ring return spring (57) to enable the upper end face of the adjusting connecting rod (56) to abut against the lower end face of the micro head (51), the magnetic circuit compresses tightly ejector pad (42) center and sets up the groove of stepping down, and adjusting link (56) lower extreme stretches into in the groove of stepping down, and yoke adjusting block (52) slidable mounting is on magnetic circuit compresses tightly ejector pad (42), and adjusting link (56) lower extreme is connected with yoke adjusting block (52).
3. The spot welding jig for the relay holder according to claim 2, wherein: yoke adjustment mechanism (5) still include connecting block (53), and connecting block (53) middle part is inserted and is stepped down the groove, and connecting block (53) both ends and yoke regulating block (52) fixed connection are provided with pressure spring (58) down connecting block (53) between terminal surface and the groove tank bottom of stepping down, and terminal surface under connecting block (53) supports and leans on adjusting connecting rod (56).
4. The spot welding jig for the relay holder as set forth in claim 3, wherein: still compress tightly ejector pad (21) including the support, the magnetic circuit compresses tightly groove lower part opening both sides of ejector pad (42) and is provided with waist type spout, and the support compresses tightly the upper portion of ejector pad (21) and passes through spacer pin (25) and install in waist type spout, and pressure spring (58) set up and compress tightly between ejector pad (21) and connecting block (53) at the support, and the support compresses tightly ejector pad (21) lower extreme and is provided with limit baffle along the fore-and-aft direction.
5. The spot welding jig for the relay holder according to claim 2, wherein: the lower part of the differential head (51) is provided with a differential head mounting block (54), and the differential head mounting block (54) is fixed in a through hole of the pressing adjusting screw rod (41) through a set screw (55).
6. The spot welding jig for the relay holder according to claim 2, wherein: the clamp comprises a clamp body (11) and is characterized by further comprising a magnetic circuit combination limiting block (22) and a support limiting block (23), wherein a support positioning block (13) is arranged on the lower portion of the cavity of the clamp body (11), the magnetic circuit combination limiting block (22) is fixed at two ends of the support positioning block (13) in the front-back direction, and the support limiting block (23) is fixed at two ends of the clamp body (11) in the front-back direction.
7. The spot welding jig for the relay holder according to claim 2, wherein: the lower end of the pressing adjusting screw rod (41) is provided with a recess (411), the upper end of the magnetic circuit pressing push block (42) is provided with a convex hull (421), and the convex hull (421) is embedded in the recess (411).
8. The spot welding fixture for the relay bracket as claimed in claim 1, wherein: the upper and lower pressing mechanisms (4) further comprise elastic pin installation seats (45), magnets (44) are embedded in the elastic pin installation seats (45) and attract the elastic pin installation seats through magnetic force to be arranged on the outer side of the lower portion of the clamp body (11), and the lower ends of the yoke pressing elastic pins (43) penetrate through the lower portion of the clamp body (11) and are embedded in the elastic pin installation seats (45).
9. The spot welding fixture for the relay bracket as claimed in claim 1, wherein: the clamp further comprises a left pressing mechanism and a right pressing mechanism (3), wherein the left pressing mechanism and the right pressing mechanism (3) are arranged on the left side and the right side of the cavity of the clamp body (11).
10. The spot welding jig for the relay holder as set forth in claim 9, wherein: the left and right pressing mechanism 3 comprises guide installation seats (31), positioning blocks (32), positioning screws (33), pressing blocks (34) and pressing screws (35), the two guide installation seats (31) are fixed on the left and right sides of a cavity of the fixture body (11) respectively, the positioning blocks (32) and the pressing blocks (34) are arranged on the left and right sides of the cavity of the fixture body (11) in a sliding mode and extend into the cavity respectively, the positioning screws (33) are screwed with the guide installation seats (31) on the same side of the positioning blocks (32), the end portions of the positioning screws (33) are connected with the positioning blocks (32), the pressing screws (35) are screwed with the guide installation seats (31) on the same side of the pressing blocks (34), and the end portions of the pressing screws (35) are connected with the pressing blocks (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209687.6A CN113967780B (en) | 2021-10-18 | 2021-10-18 | Relay support spot welding fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209687.6A CN113967780B (en) | 2021-10-18 | 2021-10-18 | Relay support spot welding fixture |
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| CN113967780A true CN113967780A (en) | 2022-01-25 |
| CN113967780B CN113967780B (en) | 2023-03-24 |
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| Publication number | Publication date |
|---|---|
| CN113967780B (en) | 2023-03-24 |
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