CN215221229U - Electric energy meter terminal spot welding machine - Google Patents

Abstract

The utility model discloses an electric energy meter terminal spot welder, include: the spot welding machine comprises a machine table, a clamp, an X-axis driving device, an upper spot welding assembly, a lower spot welding assembly and a control device, wherein the clamp is used for clamping a spot welding workpiece; the X-axis driving device is used for driving the clamp to reciprocate along the X-axis direction, and the upper spot welding assembly comprises an upper electrode capable of moving up and down and a cooling device surrounding the upper electrode; the lower spot welding assembly comprises a lower electrode capable of moving up and down, and the central line of the lower electrode is superposed with the central line of the upper electrode; the device is electrically connected with the X-axis driving device, the upper spot welding assembly and the lower spot welding assembly. The utility model discloses an electric energy meter terminal spot welder blows through the work piece solder joint after the spot welding finishes of cooling device, in the twinkling of an eye of spot welding, the heat still can not be in time of conduction, blows the cooling for the surface of welding point does not discolour, and the finished product effect of reinforcing product improves production efficiency.

Description

Electric energy meter terminal spot welding machine

Technical Field

The utility model relates to a spot welding equipment technical field especially relates to an electric energy meter terminal spot welder.

Background

The structure of the embedded electric energy meter is different from the structure of the conventional electric energy meter, the size is small, the functions are multiple, and particularly, the auxiliary interface terminals are multiple. The electric energy meter is characterized in that copper parts need to be connected in the machining process, and the connection mode between the copper parts is brazing (1); (2) electron beam welding; (3) resistance welding, the current common welding mode is resistance welding, the resistance welding mainly comprises the steps that two parts needing to be connected are put together, then, a welding point needing to be connected is connected together through a technology that a contact electrode at a contact position generates heat through instantaneous large welding current, and the welding point is melted. The binding post of electric energy meter mainly uses copper as main raw materials, and spot welding in-process welding department generates heat, and natural cooling leads to the solder joint part to discolour, and solder joint department discolours and influences electronic product's outward appearance, causes large batch to scrap, and extravagant serious, and the cooling slowly leads to the continuity of work can be bad.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned prior art current situation, the utility model aims to solve the technical problem that a can cool off electric energy meter terminal spot welder of spot welding work piece fast is provided to improve production efficiency and promote welding quality.

In order to solve the technical problem, the utility model provides an electric energy meter terminal spot welder, include: a machine platform; the clamp is arranged on the machine table and used for clamping spot welding workpieces; the X-axis driving device is used for driving the clamp to reciprocate along the X-axis direction; the upper spot welding assembly is arranged above the clamp and comprises an upper electrode capable of moving up and down and a cooling device surrounding the upper electrode; the lower spot welding assembly is arranged below the clamp and comprises a lower electrode capable of moving up and down, and the central line of the lower electrode is superposed with the central line of the upper electrode; and the control device is electrically connected with the X-axis driving device, the upper spot welding assembly and the lower spot welding assembly.

The electric energy meter terminal spot welding machine with the structure blows air to the welding spot of the workpiece after spot welding is finished through the cooling device, and blows air for cooling in the moment that heat is not conducted in time in the moment of spot welding, so that the surface of the welding spot is not discolored, the finished product effect of a product is enhanced, and the production efficiency is improved.

In one embodiment, the upper spot welding assembly further comprises an upper spot welding cylinder, the telescopic rod of the upper spot welding cylinder is connected with the upper electrode, and the central line of the telescopic rod of the upper spot welding cylinder coincides with the central line of the upper electrode.

In one embodiment, the cooling device comprises an air guide pipe surrounding the upper electrode and at least one air blowing pipe, one end of the air blowing pipe is communicated with the air guide pipe, and the other end of the air blowing pipe points to the spot welding workpiece.

In one embodiment, the air blowing pipe comprises two air blowing pipes, and the two air blowing pipes are mutually inverted in a splayed shape.

In one embodiment, the lower spot welding assembly further comprises a lower spot welding cylinder, wherein a telescopic rod of the lower spot welding cylinder is connected with the lower electrode, and a central line of the telescopic rod of the lower spot welding cylinder coincides with a central line of the lower electrode.

In one embodiment, the fixture comprises a base body, a positioning groove formed in the base body, and an X-axis positioning assembly, a Y-axis positioning assembly and an auxiliary positioning assembly which are installed on the base body.

In one embodiment, the base body is provided with a positioning groove matched with a base of the spot welding workpiece, a groove wall of the positioning groove is provided with an X-axis reference surface and a Y-axis reference surface which are perpendicular to each other, the X-axis positioning assembly is arranged on a groove wall of the positioning groove opposite to the X-axis reference surface and used for exerting elastic force on the base, and the Y-axis positioning assembly is arranged on a groove wall of the positioning groove opposite to the Y-axis reference surface and used for exerting elastic force on the base.

In one embodiment, the auxiliary positioning assembly comprises a linear guide rail mounted on the base, a slide slidably connected to the linear guide rail, a first elastic member mounted between the slide and the base, and an auxiliary clamping member mounted on the slide.

In one embodiment, the auxiliary positioning assembly further comprises an auxiliary positioning assembly and a pin positioning assembly for positioning the pin.

In one embodiment, the contact pin positioning assembly comprises a sliding hole arranged on the sliding base and extending along the X-axis direction, a sliding block installed in the sliding hole and capable of sliding along the sliding hole, a positioning pin connected with the sliding block, and a second elastic member arranged between the sliding block and the sliding base, wherein a positioning opening matched with the contact pin is formed in the end head of the positioning pin.

The advantageous effects of the additional features of the present invention will be explained in the detailed description of the preferred embodiments of the present description.

Drawings

FIG. 1 is a front view of a spot welding workpiece according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a front view of a spot welder for terminals of an electric energy meter according to an embodiment of the present invention;

fig. 4 is a left side view of the electric energy meter terminal spot welder shown in fig. 3;

FIG. 5 is an enlarged view taken along line M in FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is a schematic perspective view of a fixture of the electric energy meter terminal spot welder shown in FIG. 3;

FIG. 8 is an enlarged view of a portion of FIG. 7 at N;

FIG. 9 is a front view of the clamp of FIG. 7;

FIG. 10 is an enlarged partial view at I of FIG. 9;

FIG. 11 is a right side view of the clamp of FIG. 7;

FIG. 12 is a bottom view of the clamp of FIG. 7;

FIG. 13 is a cross-sectional view taken along line C-C of FIG. 9;

fig. 14 is a front view of the drop height compensation mechanism of the electric energy meter terminal spot welder shown in fig. 3;

fig. 15 is a sectional view taken along line D-D in fig. 14.

Description of reference numerals: 10. an upper spot welding assembly; 110. spot welding the cylinder; 120. an upper electrode; 20. a lower spot welding assembly; 210. a lower spot welding cylinder; 220. a lower electrode; 230. a limiting plate; 240. a telescopic rod; 30. an X-axis drive device; 40. a clamp; 410. a base body; 420. positioning a groove; 421. an X-axis datum plane; 422. a Y-axis datum plane; 430. an auxiliary positioning assembly; 431. a linear guide rail; 432. a slide base; 433. a first elastic member; 434. an auxiliary clamp; 435. a slide hole; 436. a slider; 437. a second elastic member; 438. positioning pins; 440. an X-axis positioning assembly; 441. mounting holes; 443. steel balls; 444. a spring; 450. a Y-axis positioning assembly; 50. a fall compensating mechanism; 520. a drop head compensation cylinder; 540. a fall cushion block; 541. a notch; 60. A control device; 70. a cooling device; 71. an air duct; 72. an air blowing pipe; 80. a machine platform; 100. spot welding the workpiece; 101. a base; 102. a first current terminal; 103. a second current terminal; 104. a relay; 105. A transformer; 106. and (6) inserting pins.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

Fig. 1 is a front view of a spot welding workpiece 100 according to an embodiment of the present invention, and fig. 2 is a cross-sectional view taken along line a-a in fig. 1. As shown in fig. 1-2, the spot welding workpiece 100 in this embodiment is an electric energy meter terminal, which includes a base 101, a relay 104, and a transformer 105, wherein the base 101 is provided with a first current terminal 102 and a second current terminal 103, the first current terminal 102 has a height H higher than the second current terminal 103, the terminals of the relay 104 and the transformer 105 are welded to the first current terminal 102 and the second current terminal 103, respectively, and the transformer 105 has a pin 106.

The electric energy meter terminal spot welder is used for welding a first current terminal 102 and a second current terminal 103 with a relay 104 terminal and an instrument transformer 105 terminal respectively. Referring to fig. 3 to 6, an exemplary electric energy meter terminal spot welder includes a machine table 80, a clamp 40, an X-axis driving device 30, an upper spot welding assembly 10, a lower spot welding assembly 20, a drop compensating mechanism 50, and a control device 60, wherein the clamp 40 is disposed on the machine table 80 for clamping a spot welding workpiece 100. The X-axis driving device 30 serves to drive the jig 40 to reciprocate in the X-axis direction. The upper spot welding assembly 10 is arranged above the X-axis driving device 30, and the upper spot welding assembly 10 comprises an upper electrode 120 which can move up and down; the lower spot welding assembly 20 is arranged below the X-axis driving device 30, the lower spot welding assembly 20 comprises a lower electrode 220 capable of moving up and down, the central line of the lower electrode 220 is overlapped with the central line of the upper electrode 120, and the lower electrode 220 and the upper electrode 120 are matched to melt solder between the first current terminal 102 and the terminal of the relay 104 or between the second current terminal 103 and the terminal of the transformer 105, so that the first current terminal 102 and the second current terminal 103 are respectively welded with the terminal of the relay 104 and the terminal of the transformer 105. The fall compensation mechanism 50 is used to adjust the maximum stroke of the upward movement of the lower electrode 220. The control device 60 is electrically connected to the X-axis driving device 30, the upper spot welding assembly 10, the lower spot welding assembly 20 and the drop height compensation mechanism 50.

As shown in fig. 7 to 13, the exemplary jig 40 includes a holder body 410, an X-axis positioning assembly 440, a Y-axis positioning assembly 450, and an auxiliary positioning assembly 430, wherein the holder body 410 is used for placing the spot welding workpiece 100, and the X-axis positioning assembly 440 is mounted on the holder body 410 for positioning the spot welding workpiece 100 in the X-axis direction; the Y-axis positioning assembly 450 is mounted on the base 410 and is used for positioning the spot welding workpiece 100 in the Y-axis direction; the auxiliary positioning assembly 430 is installed on the base 410 and is used for positioning the transformer 105 on the spot welding workpiece 100. The spot welding workpiece 100 is positioned by the fixture 40, and the welding precision is ensured.

The holder body 410 as an example is provided with a positioning groove 420 matched with the base 101 of the spot welding workpiece 100, a groove wall of the positioning groove 420 is provided with an X-axis reference surface 421 and a Y-axis reference surface 422 which are perpendicular to each other, and the X-axis positioning assembly 440 is arranged on a groove wall of the positioning groove 420 opposite to the X-axis reference surface 421 for applying an elastic force on the base 101, so that the X-axis positioning assembly 440 cooperates with the X-axis reference surface 421 to realize positioning of the base 101 in the X-axis direction. The Y-axis positioning component 450 is disposed on a groove wall of the positioning groove 420 opposite to the Y-axis reference surface 422, and is configured to apply an elastic force on the base 101, so that the Y-axis positioning component 450 and the Y-axis reference surface 422 cooperate to position the base 101 in the Y-axis direction. As shown in fig. 13, the X-axis positioning assembly 440 as an example includes a mounting hole 441 provided on a groove wall of the positioning groove 420, and a spring 440 installed in the mounting hole 441 for applying an elastic force to the steel ball 443. The structure of the Y-axis positioning assembly 450 is the same as that of the X-axis positioning assembly 440, and is not described herein again.

Referring to fig. 7-10, the auxiliary positioning assembly 430 includes a linear guide 431 mounted on the base body 410, a sliding base 432 slidably connected to the linear guide 431, a first elastic member 433 mounted between the sliding base 432 and the base body 410, and an auxiliary clamping member 434 mounted on the sliding base 432. The mutual inductor 105 on the spot welding workpiece 100 is clamped and fixed through the auxiliary clamping piece 434, the clamping stability of the spot welding workpiece 100 is further improved, and due to the fact that clamping is carried out through the elastic piece, stable spot welding is guaranteed, and meanwhile adjustment is convenient.

Preferably, the auxiliary positioning assembly 430 further includes a pin positioning assembly for positioning the pin 106, the pin positioning assembly includes a sliding hole 435 disposed on the sliding base 432 and extending along the X-axis direction, a sliding block 436 mounted in the sliding hole 435 and capable of sliding along the sliding hole 435, a positioning pin 438 connected to the sliding block 436, and a second elastic member 437 disposed between the sliding block 436 and the sliding base 432, and a positioning hole engaged with the pin 106 is disposed on a tip of the positioning pin 438.

In order to improve the welding efficiency, the fixture 40 in this embodiment includes two positioning grooves 420, two X-axis positioning assemblies 440, a Y-axis positioning assembly 450, and two auxiliary positioning assemblies 430, wherein the two positioning grooves 420 are arranged at intervals along the X-axis direction.

The X-axis driving device 30 as an example includes a lead screw (not shown in the figure), a nut (not shown in the figure) provided on the lead screw, and a motor (not shown in the figure) for driving the lead screw to rotate, and the jig 40 is connected to the nut.

The upper spot welding assembly 10 in this embodiment further includes an upper spot welding cylinder 110, the telescopic rod of the upper spot welding cylinder 110 is connected to the upper electrode 120, and the central line of the telescopic rod of the upper spot welding cylinder 110 coincides with the central line of the upper electrode 120, the utility model discloses an upper spot welding cylinder 110 realizes the motion function of the upper electrode 120 in the vertical direction, reaches the function of regulating and controlling the distance between the upper electrode 120 and the lower electrode 220, and further realizes the spot welding function of the spot welding workpiece 100; further, the center line of the expansion rod of the upper spot welding cylinder 110 coincides with the center line of the upper electrode 120, and the cylinder is not damaged even if a large force is applied to the spot welding workpiece 100.

Referring to fig. 1-2, the upper spot welding assembly 10 further includes a cooling device 70 for cooling the spot welding workpiece 100. As shown in fig. 5, the exemplary cooling device 70 includes an air duct 71 surrounding the upper electrode 120 and an air blowing tube 72 having one end communicating with the air duct 71 and the other end directed to the welding site. The utility model discloses in, the gas holder that sets up on board 80 is to the gas blow pipe 72 air feed of cooling device 70, and the gas blow pipe 72 can cool off the work piece solder joint fast, avoids solder joint department copper product oxidation to change colour, keeps the spot welding effect of spot welding product. In this embodiment, there are two air blowing pipes 72, and the two air blowing pipes 72 are in an inverted-splayed shape. The electric energy meter terminal spot welding machine with the structure blows air to the welding spot of the workpiece after spot welding is finished through the cooling device 70, and blows air for cooling in the instant that heat is not conducted in time in the instant of spot welding, so that the surface of the welding spot is not discolored, the finished product effect of a product is enhanced, and the production efficiency is improved.

The lower spot welding subassembly 20 in this embodiment still includes the lower spot welding cylinder 210, and the telescopic link 240 and the bottom electrode 220 of lower spot welding cylinder 210 are connected, and the central line of the telescopic link 240 of lower spot welding cylinder 210 coincides with the central line of bottom electrode 220, the utility model discloses a lower spot welding cylinder 210 realizes bottom electrode 220 at the motion function of vertical direction, reaches the function of distance between regulation and control upper electrode 120 and the bottom electrode 220, and then realizes spot welding function of spot welding work piece 100. The lower spot welding cylinder 210 is a stroke-controllable cylinder, and the fall compensation mechanism 50 is used for controlling the stroke of the lower spot welding cylinder 210.

As shown in fig. 3, 4 and 6, the lower end of the telescopic rod 240 of the lower spot welding cylinder 210 extends out from the lower end of the cylinder body, and the lower end of the telescopic rod 240 is provided with a limit plate 230. As shown in fig. 13 and 14, the fall compensating mechanism 50 includes the fall cushion block 540 that can move between the operating position and the non-operating position and the fall compensating cylinder 520 that is used for driving the fall cushion block 540, and at the operating position, the fall cushion block 540 inserts between the lower end of limiting plate 230 and cylinder body, and at the non-operating position, the fall cushion block 540 dodges the limiting plate 230, the utility model discloses a fall cushion block 540 of different thickness adjusts the stroke of the telescopic link 240 of the lower spot welding cylinder 210 hypomere, improves the function that the lower electrode 220 adapts to different height solder joints, is favorable to the improvement of spot welding precision.

Referring to fig. 6, the front end of the fall cushion block 540 is provided with a semicircular notch 441, and the rear end of the fall cushion block 540 is detachably connected with the telescopic rod 240 of the fall compensation cylinder 520, and the utility model discloses a screw is fixed. Because the different heights of the spot welding workpiece 100 are different, the rear end of the fall cushion block 540 is detachably connected with the telescopic rod 240 of the fall compensation cylinder 520, so that the fall cushion blocks 540 with different thicknesses can be conveniently replaced according to different fall compensation heights.

Assembling the fixture 40 with the spot welding workpiece 100 installed on the X-axis driving device 30, driving the fixture 40 on the X-axis driving device 30 to reciprocate between the upper spot welding assembly 10 and the lower spot welding assembly 20 through the control device 60, controlling the stroke ends of the upper spot welding cylinder 110 and the lower spot welding cylinder 210 to move through the control device 60, driving the upper electrode 120 and the lower electrode 220 to move until reaching a welding point, and then controlling the upper electrode 120 and the lower electrode 220 through the control device 60 to complete welding of the welding point of the spot welding workpiece 100;

in the welding process, as the number of welding spots of the spot welding workpiece 100 is large and a certain fall exists in height, at the moment, the fall compensation cylinder 520 is driven to drive the fall cushion block 540 to move to a piston rod at one end of the lower spot welding cylinder 210 far away from the lower electrode 220, the fall cushion block 540 is located at a working position, the fall cushion block 540 is abutted against the limiting plate 230 at the end part of the lower spot welding cylinder 210, the stroke regulation function of the lower spot welding cylinder 210 is realized, the compensation function of the spot welding position of the lower electrode 220 is further realized, the spot welding precision is ensured, and the spot welding effect is improved.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. A spot welding machine for electric energy meter terminals is characterized by comprising:

a machine platform;

the clamp is arranged on the machine table and used for clamping spot welding workpieces;

the X-axis driving device is used for driving the clamp to reciprocate along the X-axis direction;

the upper spot welding assembly is arranged above the clamp and comprises an upper electrode capable of moving up and down and a cooling device surrounding the upper electrode;

the lower spot welding assembly is arranged below the clamp and comprises a lower electrode capable of moving up and down, and the central line of the lower electrode is superposed with the central line of the upper electrode; and

and the control device is electrically connected with the X-axis driving device, the upper spot welding assembly and the lower spot welding assembly.

2. The electric energy meter terminal spot welder of claim 1, wherein the upper spot welding assembly further comprises an upper spot welding cylinder, wherein the telescoping rod of the upper spot welding cylinder is connected to the upper electrode, and wherein the centerline of the telescoping rod of the upper spot welding cylinder coincides with the centerline of the upper electrode.

3. The spot welder of electric energy meter terminals as claimed in claim 1, wherein said cooling means comprises a gas tube surrounding said upper electrode and at least one gas blowing tube having one end communicating with said gas tube and the other end directed toward said spot welding workpiece.

4. The electric energy meter terminal spot welding machine according to claim 3, comprising two of said blowing pipes, wherein said two blowing pipes are inverted "splay" to each other.

5. The electric energy meter terminal spot welder of claim 1, wherein the lower spot welding assembly further comprises a lower spot welding cylinder, wherein the telescoping rod of the lower spot welding cylinder is connected to the lower electrode, and wherein the centerline of the telescoping rod of the lower spot welding cylinder coincides with the centerline of the lower electrode.

6. The spot welder for terminals of electric energy meters according to any one of the claims 1 to 5, wherein the fixture comprises a base, a positioning groove formed on the base, and an X-axis positioning assembly, a Y-axis positioning assembly and an auxiliary positioning assembly mounted on the base.

7. The electric energy meter terminal spot welder according to claim 6, wherein said base body is provided with a positioning groove for mating with a base of the spot welding workpiece, a groove wall of said positioning groove having an X-axis reference surface and a Y-axis reference surface perpendicular to each other, said X-axis positioning member is provided on a groove wall of said positioning groove opposite to said X-axis reference surface for applying an elastic force on the base, and said Y-axis positioning member is provided on a groove wall of said positioning groove opposite to said Y-axis reference surface for applying an elastic force on the base.

8. The spot welder for electric energy meter terminals as claimed in claim 6, wherein said auxiliary positioning assembly comprises a linear guide mounted on the base, a slide slidably connected to the linear guide, a first elastic member mounted between the slide and the base, and an auxiliary clamp mounted on the slide.

9. The spot welder for electric energy meter terminals according to claim 8, wherein said auxiliary positioning assembly further comprises an auxiliary positioning assembly further comprising a pin positioning assembly for positioning a pin.

10. The spot welding machine for the terminals of the electric energy meter as claimed in claim 9, wherein the pin positioning assembly comprises a slide hole extending along the X-axis direction and arranged on the slide base, a slide block mounted in the slide hole and capable of sliding along the slide hole, a positioning pin connected with the slide block, and a second elastic member arranged between the slide block and the slide base, and a positioning opening matched with the pin is arranged on the end of the positioning pin.

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