CN210099201U - Spot welding electrode holder for engine sealing gasket - Google Patents
Spot welding electrode holder for engine sealing gasket Download PDFInfo
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- CN210099201U CN210099201U CN201920797384.2U CN201920797384U CN210099201U CN 210099201 U CN210099201 U CN 210099201U CN 201920797384 U CN201920797384 U CN 201920797384U CN 210099201 U CN210099201 U CN 210099201U
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- welding
- spot welding
- welding electrode
- installation piece
- servo motor
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Abstract
Engine seal gasket spot welding electrode holder, including servo motor, servo motor's output is provided with ball nut pair, ball nut pair's front end fixed connection push pedal, the fixed linear bearing that sets up in upper and lower both ends of push pedal, linear bearing uses with the cooperation of cylinder axle, the other end of cylinder axle sets up the motor fixed plate, the fixed linear guide that sets up of opposite side of motor fixed plate is vice, both ends are respectively fixed still about the push pedal have first installation piece, the articulated connecting rod that sets up on the first installation piece, the other end of connecting rod articulates on the second installation piece, the second installation piece is restricted and slides from top to bottom in linear guide is vice, the second installation piece is fixed connection weld holder still, set up the welding electrode on the weld holder. The utility model discloses following beneficial effect has: the clamping force can be accurately adjusted, the welding force of the clamp holder can be accurately adjusted through setting parameters aiming at sealing gaskets with different sheet numbers, and the appearance quality of products after spot welding is guaranteed.
Description
Technical Field
The utility model belongs to seal gasket field, concretely relates to engine seal gasket spot welding electrode holder.
Background
The quality of the sealing performance of the automobile engine is one of the important marks for measuring the quality of the automobile. Current seal gasket all is through cylinder gripping device clamp tightly, and the manual work often can appear the multi-disc few piece when doing, sometimes glue also hardly to distinguish together the naked eye, often discover through inspection personnel that the product has the multi-disc few piece condition at last, although discovered but also can only scrap because can't reprocess.
And metal gasket is softer, and many welding together need a strength at first to lean on them closely together, and the electric current of applying again reaches reliable welding effect, in manual welding, uses the gripping device of cylinder, can change the gripping power along with the size of atmospheric pressure, if the electrode cap installation bad even can not hit the product at all, has produced a lot of waste products again.
In addition, the electrode cap needs to be periodically polished, the electrode cap is abraded due to polishing, the electrode cap is continuously shortened, and the metal gasket cannot be clamped by the air cylinder holding device.
Disclosure of Invention
Not enough to prior art, the utility model provides an engine seal gasket spot welding electrode holder solves current cylinder and holds the tight device and can change the power of holding along with atmospheric pressure size, can produce the too big or problem that can not bump the product of clamp force.
The utility model discloses a following technical scheme realizes.
Engine seal gasket spot welding electrode holder, including servo motor, servo motor's output is provided with ball nut pair, ball nut pair's front end fixed connection push pedal, the fixed linear bearing that sets up in upper and lower both ends of push pedal, linear bearing uses with the cooperation of cylinder axle, the other end of cylinder axle sets up the motor fixed plate, the fixed linear guide that sets up of opposite side of motor fixed plate is vice, both ends are respectively fixed still about the push pedal have first installation piece, the articulated connecting rod that sets up on the first installation piece, the other end of connecting rod articulates on the second installation piece, the second installation piece is restricted and slides from top to bottom in linear guide is vice, the second installation piece is fixed connection weld holder still, set up the welding electrode on the weld holder. The equipment has stable and reliable action and high repetition precision, not only replaces the heavy manual labor of people, but also improves the welding quality, which is the key for ensuring the high-quality and stable production of products. The core device of the spot welding machine is a set of precise spot welding electrode holder, and the device has the following three advantages. 1. The distance between the electrode caps can be intelligently measured, the phenomenon of abnormal welding thickness is prevented, the generation of waste products is restrained, and the cost of an enterprise is saved; 2. the clamping force can be accurately adjusted, and the welding force of the clamp holder can be accurately adjusted by setting parameters aiming at sealing gaskets with different combinations of numbers, so that the appearance quality of products after spot welding is ensured; 3. the clamping distance caused by the loss of the electrode cap can be intelligently corrected to be increased, and the welded sealing gasket is a stamping part formed by thin plates, so that the rigidity is poor, irregular deformation is easily generated, and the position of a workpiece in the clamp is unstable and has larger change. In order to obtain a satisfactory welding effect, a unique intelligent floating mechanism with an automatic compensation function is designed in the design of the clamp holder so as to compensate for the automatic adjustment of electrode abrasion. The servo motor can flexibly and changeably control the output length of the ball screw nut pair according to a program, so that the clamping degree of the clamp holder is flexibly adjusted, and the problem that the distance between welding electrodes is insufficient after the electrodes are abraded is solved. The novel design, the ingenious structure and the reliable performance can completely meet various requirements of spot welding operation of the sealing gasket of the engine. And the action is flexible, the failure rate is low, and the use and the maintenance are convenient.
Preferably, the second mounting block is provided with a protrusion, the linear guide rail pair is provided with a sliding groove, and the protrusion is limited in the sliding groove.
Preferably, a linkage plate is further arranged between the welding seat and the second mounting block, and the welding seat, the second mounting block and the linkage plate are fixed through bolts.
Preferably, a motor base is arranged outside the servo motor shell, and the ball screw nut pair is arranged in the motor base.
Compared with the prior art: the clamping force can be accurately adjusted, the welding force of the clamp holder can be accurately adjusted through setting parameters aiming at sealing gaskets with different sheet numbers, and the appearance quality of products after spot welding is guaranteed.
Drawings
Fig. 1 is one of the schematic structural diagrams of the present invention.
Fig. 2 is a second schematic structural diagram of the present invention.
Fig. 3 is a schematic diagram of the measurement method of the present invention.
Fig. 4 is a schematic diagram of the compensation method of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the embodiments.
An engine sealing gasket spot welding electrode holder comprises a servo motor 1, wherein a ball screw nut pair 3 is arranged at the output end of the servo motor 1, a push plate 4 is fixedly connected at the front end of the ball screw nut pair 3, linear bearings are fixedly arranged at the upper end and the lower end of the push plate 4, the linear bearings are matched with a cylindrical shaft 5 for use, a motor fixing plate 7 is arranged at the other end of the cylindrical shaft 5, a linear guide rail pair 8 is fixedly arranged at the other side of the motor fixing plate 7, first mounting blocks are respectively and fixedly arranged at the upper end and the lower end of the push plate 4, a connecting rod 6 is hinged on the first mounting block, the other end of the connecting rod 6 is hinged on a second mounting block 11, the second mounting block 11 is limited in the linear guide rail pair 8 to slide up and down, the second mounting block 11 is also fixedly connected with a welding seat 9, and a welding electrode 10 is arranged on the welding seat 9, second installation piece 11 be provided with the arch, linear guide pair 8 on be provided with the spout, protruding restriction in the spout, welding seat 9 and second installation piece 11 between still be provided with linkage plate, welding seat 9, second installation piece 11 and linkage plate between pass through the bolt fastening, 1 casing of servo motor set up motor cabinet 2 outward, ball screw nut 3 vice setting in motor cabinet 2.
In the use, servo motor 1 drives ball screw nut pair 3 and rotates, is provided with the nut on the ball screw nut pair 3, and what with the nut complex is push pedal 4, so become linear motion rotary motion, push pedal 4 is forward, and the first installation piece that is connected with push pedal 4 moves forward.
In the forward moving process, in order to keep a certain straightness, the linear bearing is matched with the cylindrical shaft 5 for use, in the forward moving process of the first installation block, the hinged connecting rod 6 rotates relatively and moves forward relatively, the second installation block 11 is hinged to the other end of the connecting rod 6, the second installation block 11 moves downward under the action of the connecting rod, the upper second installation block 11 and the lower second installation block 11 are close to each other, the second installation block is fixedly connected with the welding seat 9 through the linkage plate, at the moment, the welding seat 9 and the welding electrode 10 move vertically, and the two welding electrodes 10 are close to each other.
Similarly, when the servo motor 1 drives the ball screw nut pair 3 to rotate in the opposite direction, the upper and lower second mounting blocks 11 are driven to be away from each other in the leftward movement and rotation processes of the connecting rod 6, so that the two welding electrodes are away from each other.
The second mounting block 11 slides up and down in the linear guide rail pair 8, and the protrusion of the second mounting block 11 slides in the sliding groove, so that the motion track of the second mounting block 11 is realized.
The metal gasket is softer, many welding together, at first need a strength tightly lean on them together, exert the electric current again and reach reliable welding effect, in manual welding, use the gripping device of cylinder, can change the gripping power along with the size of atmospheric pressure, if the electrode cap installation is not good even can not touch the product at all, so must directly embody the actual stress state between two electrode caps and just can have more reliable welding condition, we carry out direct control to servo 1, through the current moment of torsion feedback of once 5 milliseconds, come the stress of audio-visual embodiment electrode cap, corresponding gripping power is obtained in rethread conversion, and can be according to the difference of product, set for different gripping power.
The metal gasket is softer, many welding together, at first need a strength tightly lean on them together, exert the electric current again and reach reliable welding effect, in manual welding, use the gripping device of cylinder, can change the gripping power along with the size of atmospheric pressure, if the electrode cap installation is not good even can not touch the product at all, so must directly embody the actual stress state between two electrode caps and just can have more reliable welding condition, we carry out direct control to servo 1, through the current moment of torsion feedback of once 5 milliseconds, come the stress of audio-visual embodiment electrode cap, corresponding gripping power is obtained in rethread conversion, and can be according to the difference of product, set for different gripping power.
The measuring method of the seal gasket spot welding electrode holder comprises an upper connecting rod 6 and a lower connecting rod 6, wherein the two connecting rods 6 comprise two left circle centers and two right circle centers, and the measuring method is characterized in that the length between the left circle center and the right circle center of one connecting rod is set as a, the transverse linear distance from the left circle center to the right circle center of one connecting rod is set as a variable b, the variable b is controlled by the servo motor 1, and the variable b is reduced along with the rightward movement of the push plate 4; the method comprises the following three steps of setting the longitudinal linear distance from the center of a right side of one connecting rod to the center of a left side of the connecting rod as a variable c, setting the distance between the centers of left sides of two connecting rods as d, and setting the distance between the centers of right sides of two connecting rods as e: first step, calibrating a reference triangle:
according to the design time, the distance between the upper electrode cap and the lower electrode cap is 0, a determined triangle is calibrated, the distance d is 103.1mm, the side length b is 68.98mm, and the side length c is calculated by the following formula
c=
=79.16mm
Calibrating the data of the upper electrode and the lower electrode at the distance of 0: calculating a distance formula of an upper welding electrode and a lower welding electrode under a calibration state by using the triangle calibrated in the first step, wherein a variable k is required to be introduced, k is an increment of the side length b, the increment k is 0 under the calibration state
Thirdly, confirming a final algorithm, namely the relationship between the distance between an upper electrode and a lower electrode and the servo position: a variable m is required to be added, wherein the variable m is a servo equal dividing variable, when the calibration is carried out in the first step and the second step, the equal dividing variable is equal to 0, meanwhile, the condition 1) servo system precision is required to be introduced, the calculation is carried out according to a circle of 100000 equal dividing, the condition 2) lead screw pitch is 5mm, and the final formula is
Distance between upper and lower welding electrodes =
The calibration needs to be completed when the equipment leaves a factory, and the servo motor has a power-off holding function for an absolute value encoder, so that the calibration is only needed once, the clamping action of the upper electrode cap and the lower electrode cap can be performed when the equipment is started, so as to confirm the corresponding distance between the upper electrode cap and the lower electrode cap when no object exists, and the product thickness of the upper electrode cap support and the lower electrode cap support can be calculated on the basis of the distance during normal work.
The method is characterized in that a plurality of small pieces often appear in manual work, sometimes the small pieces are adhered together and are difficult to distinguish by naked eyes, finally, the condition that the small pieces exist in the product is often found by an inspector, although the small pieces are found, the product can only be scrapped due to incapability of being repaired, and the fact that whether the thickness of the product is abnormal or not is known before welding through a mechanical structure and an algorithm.
The welding electrodes 10 are driven by the servo motor 1, the servo motor 1 firstly gathers 2 welding electrodes 10 to obtain a servo position when no article exists between the electrodes, and the current position is taken as a 0-distance state through internal conversion. Then, when material exists in the middle of each welding, the clamping thickness is calculated according to the subsequent clamping position, so that whether a plurality of small pieces exist or not can be detected between the discharge welding.
A compensation method for a seal gasket spot welding electrode holder is characterized in that upper and lower electrodes are clamped at 2 speeds, a high speed V1 and a low speed V2, the electrodes are clamped to a position 1 at a V1 speed, then the electrodes advance to a set torque of a set servo motor 1 at a V2 speed, after each grinding, the position 1 needs to be continuously adjusted through the servo motor 1, a fixed quantity q is introduced, the q is a safety distance set for preventing collision after the high-speed clamping of the upper and lower electrodes is stopped, and the distance between the upper and lower electrode caps should be q + y on the assumption that the thickness of a product is y after the high-speed clamping is stopped. q + y is a fixed value, the distance of each grinding is calculated by the clamping of the empty clamp after each grinding, and assuming that the empty clamping distance after the first grinding is amm, the clamping distance after the second grinding is a-bmm, each electrode cap is worn by b/2mm, then the original high-speed V1 travels from position 1 to q + y + a, and position 1 travels to q + y + a-b after grinding.
The electrode cap is required to be ground regularly, the grinding can cause the abrasion of the electrode cap, the electrode cap is continuously shortened, the numerical value of the measured thickness becomes inaccurate after each grinding, an action and an algorithm are introduced, and after the electrode cap is ground, the equipment can automatically and again hold the welding electrode without welding materials and correct the position 1 of the electrode cap.
The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.
Claims (4)
1. The holder for the spot welding electrode of the sealing gasket of the engine is characterized by comprising a servo motor (1), wherein a ball screw nut pair (3) is arranged at the output end of the servo motor (1), a push plate (4) is fixedly connected with the front end of the ball screw nut pair (3), linear bearings are fixedly arranged at the upper end and the lower end of the push plate (4), the linear bearings are matched with a cylindrical shaft (5) for use, a motor fixing plate (7) is arranged at the other end of the cylindrical shaft (5), a linear guide rail pair (8) is fixedly arranged at the other side of the motor fixing plate (7), first mounting blocks are respectively and fixedly arranged at the upper end and the lower end of the push plate (4), a connecting rod (6) is hinged on the first mounting blocks, the other end of the connecting rod (6) is hinged on a second mounting block (11), and the second mounting block (11) is limited in the linear guide rail pair (8) to slide up and down, the second mounting block (11) is further fixedly connected with a welding seat (9), and a welding electrode (10) is arranged on the welding seat (9).
2. The engine gasket spot welding electrode holder according to claim 1, wherein the second mounting block (11) is provided with a protrusion, the linear guide pair (8) is provided with a sliding slot, and the protrusion is limited in the sliding slot.
3. The engine gasket spot welding electrode holder according to claim 1, wherein a linkage plate is further arranged between the welding seat (9) and the second mounting block (11), and the welding seat (9), the second mounting block (11) and the linkage plate are fixed through bolts.
4. The engine sealing gasket spot welding electrode holder according to claim 1, wherein a motor base (2) is arranged outside the housing of the servo motor (1), and the ball screw nut pair (3) is arranged in the motor base (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797384.2U CN210099201U (en) | 2019-05-30 | 2019-05-30 | Spot welding electrode holder for engine sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797384.2U CN210099201U (en) | 2019-05-30 | 2019-05-30 | Spot welding electrode holder for engine sealing gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210099201U true CN210099201U (en) | 2020-02-21 |
Family
ID=69563996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920797384.2U Expired - Fee Related CN210099201U (en) | 2019-05-30 | 2019-05-30 | Spot welding electrode holder for engine sealing gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210099201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193654A (en) * | 2019-05-30 | 2019-09-03 | 舟山海山机械密封材料股份有限公司 | Gasket seal spot welding electrode holder and its measurement and compensation method |
-
2019
- 2019-05-30 CN CN201920797384.2U patent/CN210099201U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193654A (en) * | 2019-05-30 | 2019-09-03 | 舟山海山机械密封材料股份有限公司 | Gasket seal spot welding electrode holder and its measurement and compensation method |
| CN110193654B (en) * | 2019-05-30 | 2024-01-30 | 舟山海山机械密封材料股份有限公司 | Sealing gasket spot welding electrode holder and measuring and compensating method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |