A seamless welding machine
By designing a water circulation path in a seamless welding machine for cooling, the overheating problem caused by high material conductivity when welding gold and silver products is solved, and the continuous and efficient operation of the equipment and the improvement of welding efficiency is achieved.
Patent Information
- Application Number
- CN202420711779.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-08
AI Technical Summary
When welding gold and silver products, existing seamless welding machines have low resistivity due to high material conductivity, which generates huge short-circuit current during welding, causing overheating of transformers, copper strips and welding electrodes, affecting welding quality and equipment life, and require frequent shutdown and cooling, reducing working efficiency.
A seamless welding machine is designed, using a water circulation path for cooling, including a water tank, a water pump, an air-cooled water chiller, a water-cooled plate and a water-cooled pipe. The water-cooled chiller is cooled in time through the air-cooled chiller. The water-cooled plate cools the conductive chuck and welding electrodes to cool, and the water-cooled pipe cools the low-pressure water-cooled resistance welding transformer.
It realizes timely cooling and cooling of seamless welding machines when continuously welding gold and silver products, avoids the problem of overheating of welding fixtures and electrodes, improves welding efficiency and service life of equipment, and reduces oxidation and aging caused by high temperatures.
Smart Images
Figure CN222740507U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of welding devices, in particular to a seamless welding machine. Background Art
[0002] Currently, gold and silver products, especially bracelets, are generally welded by seamless welding. The seamless welding machines available on the market basically use low-voltage and high-current resistance welding. In actual use, the purchased welding machines have extremely high conductivity and extremely low resistivity of gold and silver products. The same welding temperature requires a larger current. Therefore, when welding heavy solid bracelets, a huge short-circuit current will be generated on the low-voltage side of the transformer.
[0003] Since the transformer, connecting copper busbar and welding electrodes are all made of pure copper, the resistivity of pure copper is much greater than that of gold and silver materials. Therefore, after the extremely short-circuit current on the low-voltage side of the transformer is generated, the transformer, connecting copper busbar and welding electrodes will generate geometric multiples of huge heat. After welding three large-diameter bracelets in succession, the welding fixture began to heat up and change color. After the number of continuous welding reached five, the operator could clearly feel the heat radiation released by the fixture. When the number of continuous welding reached 8-10 pieces, the equipment would become seriously heated and the temperature of the welding electrode would exceed 200°C. If welding was continued without heat dissipation, burns and electric fires were likely to occur, and the output efficiency of the transformer would be low.
[0004] In order to ensure operational safety, conventional seamless welding machines need to stop after continuously producing 8-10 gold and silver products, and rely on natural cooling or compressed air cooling for auxiliary cooling. Welding can only be continued after the equipment drops to the operating temperature. Using this method to cool down greatly reduces work efficiency.
[0005] However, even if the machine is shut down on time, conventional seamless welding machines will still have the following problems after using them for a period of time: 1. The conductive chuck of the welding fixture will oxidize and turn black due to high temperature, and there is a certain probability that the surface will oxidize and fall off. The resulting oxide layer will affect the conductivity of the conductive chuck, causing the contact surface resistance of the welding electrode and the wristband to increase, which is prone to sparks and poor welding; 2. The welding electrode will experience oxidation wear, and the electrode thickness will gradually decrease; 3. Excessive heating will cause thermal deformation of other related components. For example, the clamping cylinder will experience unsmooth operation, jamming, and loss of control; 4. It will cause the insulating support components of the welding fixture to age, lose strength and insulation, and in severe cases, welding work cannot be carried out. Utility Model Content
[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a seamless welding machine. The utility model can achieve timely cooling.
[0007] To achieve the above-mentioned purpose, the utility model provides a seamless welding machine, comprising: a water tank; a water pump, the water inlet of the water pump is connected to the water tank through a pipeline; an air-cooled chiller, the water outlet of the water pump is connected to the water inlet of the air-cooled chiller; a welding fixture, the welding fixture comprises a conductive chuck, the conductive chuck is fitted and fixed with a water-cooling plate, the water outlet of the air-cooled chiller is connected to the water inlet of the water-cooling plate through a pipeline; a low-voltage water-cooled resistance welding transformer, the low-voltage water-cooled resistance welding transformer comprises a water-cooling pipe, the water outlet of the water-cooling plate is connected to the water inlet of the water-cooling pipe through a pipeline, and the water outlet of the water-cooling pipe is connected to the water tank.
[0008] Furthermore, the seamless welding machine also includes a cabinet, the bottom of which is provided with supporting legs, the cabinet is provided with vertical partitions, the vertical partitions divide the interior of the cabinet into a first cavity and a second cavity, the water pump and the water tank are both located in the first cavity, the air-cooled chiller is installed on the outside of the bottom of the cabinet, and the welding fixture and the low-voltage water-cooled resistance welding transformer are both installed on the outside of the top of the cabinet.
[0009] Further, the welding fixture includes: a first clamping part, the first clamping part includes an insulating bracket, a dynamic clamp, a clamping cylinder, the conductive clamp and the water-cooling plate, the insulating bracket includes a transverse insulating plate and a vertical insulating plate, the vertical insulating plate is fixedly arranged on the upper end surface of the transverse insulating plate, the clamping cylinder is installed on the side of the vertical insulating plate and drives the dynamic clamp to move in the vertical direction, the conductive clamp is arranged in parallel between the transverse insulating plate and the dynamic clamp, the water-cooling plate is arranged in parallel between the conductive clamp and the transverse insulating plate, and is clamped by the conductive clamp and the transverse insulating plate, and the transverse insulating plate of the first clamping part is fixedly connected to the top of the cabinet; a second clamping part, the second clamping part and the first clamping part have the same structure, and the two are symmetrically arranged, the dynamic clamp, the conductive clamp and the water-cooling plate are located between the two vertical insulating plates; a driving member, the driving member drives the transverse insulating plate of the second clamping part to move in a direction close to or away from the first clamping part.
[0010] Furthermore, the water-cooling plate of the first clamping part and the water-cooling plate of the second clamping part are connected in series. Before being connected in series, the two water-cooling plates are connected to the water outlet of the air-cooled chiller through a pipeline. After being connected in series, the two water-cooling plates are connected to the water inlet of the water cooling pipe.
[0011] Furthermore, the driving member includes a driving block, a driving cylinder and two parallel optical axes, the driving block is fixedly mounted on the lower end surface of the transverse insulating plate on the second clamping part, and positioning blocks are respectively provided at the opposite ends of the optical axis, and the four positioning blocks are respectively fixedly connected to the top of the cabinet, and a movable sliding block and a fixed sliding block are sleeved on the optical axis, and the upper end surfaces of the fixed sliding block and the movable sliding block are flush, and the upper end surfaces of the two fixed sliding blocks are respectively fixedly fitted with the lower end surfaces of the transverse insulating plate on the first clamping part, and the upper end surfaces of the two movable sliding blocks are respectively fixedly fitted with the lower end surfaces of the transverse insulating plate on the second clamping part, and the driving cylinder is installed on the top of the cabinet, and the driving cylinder is drivingly connected to the driving block, and the driving cylinder drives the driving block to move in a direction close to or away from the first clamping part.
[0012] Furthermore, the low-voltage water-cooled resistance welding transformer also includes a connecting copper bar, and the opposite ends of the connecting copper bar are electrically connected to the two conductive clamps by means of a copper braided wire soft connection.
[0013] Furthermore, the seamless welding machine also includes a voltage regulator and a circuit board, the voltage regulator and the circuit board are respectively installed in the second cavity, and the vertical partition is a bakelite board.
[0014] Furthermore, supporting insulating plates are respectively provided on the opposite sides of the two vertical insulating plates, and the bottoms of the supporting insulating plates are fixedly connected to the transverse insulating plates.
[0015] The beneficial effects of the utility model are:
[0016] The water tank, the water pump, the air-cooled chiller, the water-cooling plate and the water-cooling pipe form a water circulation passage, wherein the air-cooled chiller can timely cool the water flowing in the water circulation passage, the water-cooling plate cools down the conductive chuck, and the water-cooling pipe cools down the low-voltage water-cooled resistance welding transformer, so that the utility model can continuously perform gold and silver product welding, thereby improving work efficiency;
[0017] The water cooling plate cools the conductive chuck by fitting with the conductive chuck, preventing the conductive chuck surface from being oxidized and blackened, preventing the welding electrode from being oxidized and worn due to high temperature, and preventing other components from being aged, thermally deformed, losing strength and insulation due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0019] Figure 1 This is the overall structure diagram of a seamless welding machine of the utility model;
[0020] Figure 2 This is a structural diagram of an angle of a welding fixture for seamless welding of the utility model;
[0021] Figure 3 This is a structural diagram of another angle of a seamless welding fixture of the utility model;
[0022] Figure 4 This is a structural diagram of another angle of a welding fixture for seamless welding of the utility model.
[0023] In the figure, 1. water tank; 2. water pump; 3. air-cooled chiller; 4. welding fixture; 41. first clamping part; 411. insulating bracket; 4111. vertical insulating plate; 4112. horizontal insulating plate; 412. moving chuck; 413. clamping cylinder; 414. conductive chuck; 415. water-cooled plate; 42. second clamping part; 43. driving member; 431. driving block; 432. driving cylinder; 433. optical axis; 434. positioning block; 435. fixed slide block; 436. moving slide block; 5. low-voltage water-cooled resistance welding transformer; 51. water-cooling pipe; 52. connecting copper busbar; 6. cabinet; 61. second cavity; 62. first cavity; 7. vertical partition; 8. supporting leg; 9. voltage regulator. DETAILED DESCRIPTION
[0024] The following is combined with Figure 1 -Attached Figure 4 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
[0025] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0026] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0027] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0028] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0029] The utility model provides a seamless welding machine.
[0030] A seamless welding machine comprises: a water tank 1; a water pump 2, wherein the water inlet of the water pump 2 is connected to the water tank 1 through a pipeline; an air-cooled water chiller 3, wherein the water outlet of the water pump 2 is connected to the water inlet of the air-cooled water chiller 3; a welding fixture 4, wherein the welding fixture 4 comprises a conductive chuck 414, wherein the conductive chuck 414 is fitted and fixed with a water-cooling plate 415, wherein the water outlet of the air-cooled water chiller 3 is connected to the water inlet of the water-cooling plate 415 through a pipeline; and a low-voltage water-cooled resistance welding transformer 5, wherein the low-voltage water-cooled resistance welding transformer 5 comprises a water-cooling pipe 51, wherein the water outlet of the water-cooling plate 415 is connected to the water inlet of the water-cooling pipe 51 through a pipeline, wherein the water outlet of the water-cooling pipe 51 is connected to the water tank 1.
[0031] In the specific embodiment, the specific structures of the air-cooled chiller 3 and the low-voltage water-cooled resistance welding transformer 5 are both within the scope of the prior art. In actual applications, both can be directly purchased and assembled.
[0032] In the technical solution proposed in the present application, the water tank 1, the water pump 2, the air-cooled chiller 3, the water-cooling plate 415 and the water-cooling pipe 51 form a water circulation passage, wherein the air-cooled chiller 3 can timely cool the water flowing in the water circulation passage, the water-cooling plate 415 cools down the conductive chuck 414, and the water-cooling pipe 51 cools down the low-voltage water-cooled resistance welding transformer 5, so that the utility model can uninterruptedly weld gold and silver products, thereby improving work efficiency; the water-cooling plate 415 cools down the conductive chuck 414 by fitting with the conductive chuck 414, thereby preventing the surface of the conductive chuck 414 from being oxidized and blackened, preventing the welding electrode from being oxidized and worn due to high temperature, and preventing other components from being aged, thermally deformed, losing strength and losing insulation due to high temperature.
[0033] The seamless welding machine also includes a cabinet 6, a support leg 8 is provided at the bottom of the cabinet 6, a vertical partition 7 is provided inside the cabinet 6, and the vertical partition 7 divides the interior of the cabinet 6 into a first cavity 62 and a second cavity 61, the water pump 2 and the water tank 1 are both located in the first cavity 62, the air-cooled chiller 3 is installed on the outside of the bottom of the cabinet 6, and the welding fixture 4 and the low-voltage water-cooled resistance welding transformer 5 are both installed on the outside of the top of the cabinet 6. In a specific embodiment, the cabinet 6 is a sealed structure, and the seamless welding machine also includes a voltage regulator 9 and a circuit board, which are respectively installed in the second cavity 61, and the vertical partition 7 is a bakelite board.
[0034] The vertical partition 7 realizes the separation of water and electricity in the cabinet 6 , and the air-cooled chiller 3 is installed on the outside of the bottom of the cabinet 6 , which facilitates the heat dissipation of the air-cooled chiller 3 itself.
[0035] The welding fixture 4 includes: a first clamping part 41, the first clamping part 41 includes an insulating bracket 411, a dynamic clamp 412, a clamping cylinder 413, a conductive clamp 414 and a water-cooling plate 415, the insulating bracket 411 includes a horizontal insulating plate 4112 and a vertical insulating plate 4111, the vertical insulating plate 4111 is fixedly arranged on the upper end surface of the horizontal insulating plate 4112, the clamping cylinder 413 is installed on the side of the vertical insulating plate 4111, and drives the dynamic clamp 412 to move in the vertical direction, the conductive clamp 414 is arranged parallel to the horizontal insulating plate 4112 and the dynamic clamp 412, and the water-cooling plate 415 is arranged parallel to the horizontal insulating plate 4112 and the dynamic clamp 412. The conductive clamp 414 and the horizontal insulating plate 4112 are located between the conductive clamp 414 and the horizontal insulating plate 4112, and are clamped by the conductive clamp 414 and the horizontal insulating plate 4112. The horizontal insulating plate 4112 of the first clamping part 41 is fixedly connected to the top of the cabinet 6; the second clamping part 42, the second clamping part 42 and the first clamping part 41 have the same structure, and the two are symmetrically arranged, the dynamic clamp 412, the conductive clamp 414 and the water-cooled plate 415 are located between the two vertical insulating plates 4111; the driving member 43, the driving member 43 drives the horizontal insulating plate 4112 of the second clamping part 42 to move toward or away from the first clamping part 41.
[0036] When welding gold and silver bracelets, the dynamic clamp 412 and the conductive clamp 414 cooperate to clamp the bracelet, and under the drive of the driving member 43, the part of the bracelet to be welded is aligned.
[0037] The water-cooling plate 415 of the first clamping part 41 and the water-cooling plate of the second clamping part 42 are connected in series. Before the two water-cooling plates are connected in series, they are connected to the water outlet of the air-cooled chiller 3 through a pipeline. After the two water-cooling plates 415 are connected in series, they are connected to the water inlet of the water-cooling pipe 51. In a specific embodiment, an M-shaped channel is provided in the water-cooling plate 415. The provision of the M-shaped channel can increase the contact area between the water-cooling plate 415 and the conductive clamp 414.
[0038] Compared with the two water-cooling plates 415 being connected in parallel, the two water-cooling plates 415 are connected in series, which not only simplifies the arrangement of the pipelines, but also prevents the M-shaped passage in the water-cooling plate 415 from being blocked.
[0039] The driving member 43 includes a driving block 431, a driving cylinder 432 and two parallel optical axes 433. The driving block 431 is fixedly arranged on the lower end surface of the horizontal insulating plate on the second clamping part 42. Positioning blocks 434 are respectively provided at the opposite ends of the optical axis 433. The four positioning blocks 434 are respectively fixedly connected to the top of the cabinet 6. A movable slider 436 and a fixed slider 435 are sleeved on the optical axis 433. The upper end surfaces of the fixed slider 435 and the movable slider 436 are flush. The upper end surfaces of the two fixed sliders 435 are respectively fixedly fitted with the lower end surfaces of the horizontal insulating plate 4112 on the first clamping part 41. The upper end surfaces of the two movable sliders 436 are respectively fixedly fitted with the lower end surfaces of the horizontal insulating plate on the second clamping part 42. The driving cylinder 432 is installed on the top of the cabinet 6. The driving cylinder 432 is drivingly connected to the driving block 431. The driving cylinder 432 drives the driving block 431 to move in the direction close to or away from the first clamping part 41. In a specific embodiment, the driving cylinder 432 is a small adjustable stroke mini cylinder.
[0040] The low-voltage water-cooled resistance welding transformer 5 further includes a connecting copper bar 52 , and opposite ends of the connecting copper bar 52 are electrically connected to two conductive clamps 414 by means of copper braided wire soft connection.
[0041] The copper braided wire soft connection not only reduces the skin effect of large current, but also facilitates the movement of the conductive clamp 414.
[0042] Supporting insulating plates are respectively provided on the opposite sides of the two vertical insulating plates 4111 , and the bottoms of the supporting insulating plates are fixedly connected to the horizontal insulating plates 4112 .
[0043] The provision of the supporting insulating plate ensures the firmness of the vertical insulating plate 4111 .
[0044] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.
Claims
1. A seamless welding machine, characterized in that: include: Water tank; A water pump, wherein the water inlet of the water pump is connected to the water tank through a pipeline; An air-cooled chiller, wherein the water outlet of the water pump is connected to the water inlet of the air-cooled chiller; A welding fixture, the welding fixture comprising a conductive chuck, the conductive chuck being fitted and fixed with a water-cooled plate, the water outlet of the air-cooled chiller being connected to the water inlet of the water-cooled plate through a pipeline; A low-voltage water-cooled resistance welding transformer, the low-voltage water-cooled resistance welding transformer comprises a water cooling pipe, the water outlet of the water cooling plate is connected to the water inlet of the water cooling pipe through a pipeline, and the water outlet of the water cooling pipe is connected to the water tank.
2. A seamless welding machine as claimed in claim 1, characterized in that: The seamless welding machine also includes a cabinet, the bottom of which is provided with supporting legs, and the cabinet is provided with vertical partitions, which divide the interior of the cabinet into a first cavity and a second cavity, the water pump and the water tank are both located in the first cavity, the air-cooled chiller is installed on the outside of the bottom of the cabinet, and the welding fixture and the low-voltage water-cooled resistance welding transformer are both installed on the outside of the top of the cabinet.
3. A seamless welding machine as claimed in claim 2, characterized in that: The welding fixture comprises: A first clamping part, the first clamping part comprises an insulating bracket, a movable clamp, a clamping cylinder, the conductive clamp and the water-cooling plate, the insulating bracket comprises a transverse insulating plate and a vertical insulating plate, the vertical insulating plate is fixedly arranged on the upper end surface of the transverse insulating plate, the clamping cylinder is installed on the side of the vertical insulating plate, and drives the movable clamp to move in the vertical direction, the conductive clamp is arranged parallel to the transverse insulating plate and the movable clamp, the water-cooling plate is arranged parallel to the conductive clamp and the transverse insulating plate, and is clamped by the conductive clamp and the transverse insulating plate, and the transverse insulating plate of the first clamping part is fixedly connected to the top of the cabinet; A second clamping part, wherein the second clamping part has the same structure as the first clamping part and the two are symmetrically arranged, and the dynamic clamping head, the conductive clamping head and the water cooling plate are located between the two vertical insulating plates; A driving member drives the transverse insulating plate of the second clamping part to move toward or away from the first clamping part.
4. A seamless welding machine as claimed in claim 3, characterized in that: The water-cooling plate of the first clamping part and the water-cooling plate of the second clamping part are connected in series. Before being connected in series, the two water-cooling plates are connected to the water outlet of the air-cooled chiller through a pipeline. After being connected in series, the two water-cooling plates are connected to the water inlet of the water cooling pipe.
5. A seamless welding machine as claimed in claim 3, characterized in that: The driving member includes a driving block, a driving cylinder and two parallel optical axes. The driving block is fixedly mounted on the lower end surface of the transverse insulating plate on the second clamping part. Positioning blocks are respectively provided at the opposite ends of the optical axis. The four positioning blocks are respectively fixedly connected to the top of the cabinet. A movable slider and a fixed slider are sleeved on the optical axis. The upper end surfaces of the fixed slider and the movable slider are flush. The upper end surfaces of the two fixed sliders are respectively fixedly fitted with the lower end surface of the transverse insulating plate on the first clamping part. The upper end surfaces of the two movable sliders are respectively fixedly fitted with the lower end surface of the transverse insulating plate on the second clamping part. The driving cylinder is installed on the top of the cabinet. The driving cylinder is drivingly connected to the driving block. The driving cylinder drives the driving block to move in a direction close to or away from the first clamping part.
6. A seamless welding machine as claimed in claim 3, characterized in that: The low-voltage water-cooled resistance welding transformer also includes a connecting copper bar, and the opposite ends of the connecting copper bar are electrically connected to the two conductive clamps through a copper braided wire soft connection.
7. A seamless welding machine as claimed in claim 2, characterized in that: The seamless welding machine further comprises a voltage regulator and a circuit board, wherein the voltage regulator and the circuit board are respectively installed in the second cavity, and the vertical partition is a bakelite board.
8. A seamless welding machine as claimed in claim 3, characterized in that: The two vertical insulating plates are respectively provided with supporting insulating plates on their opposite sides, and the bottoms of the supporting insulating plates are fixedly connected to the transverse insulating plates.