Welding device for large-length-diameter-ratio product with sealing foil

Abstract

The invention discloses a welding device for a large-length-diameter-ratio product with a sealing foil. The welding device comprises a clamping mechanism and a cooling mechanism. A rotary driving source is arranged at the lower end of the clamping mechanism, the output end of the rotary driving source is in driving connection with the fixed end of the clamping mechanism, and the fixed end of the rotary driving source is detachably and fixedly connected with the table top of the working machine table. The cooling mechanism comprises a cooling pipe, a cooling source and a supporting assembly. The cooling pipe is in a barrel shape, the top end of the cooling pipe is in a closed state, the lower end of the cooling pipe is in an open state, cooling holes are formed in the peripheral wall of the cooling pipe and penetrate through the cooling pipe, and the cooling holes and the pipe wall of the cooling pipe are arranged at an angle of 45 degrees. And the horizontal plane of the exhaust port of the cooling hole is lower than the air inlet of the cooling pipe. The technical problem that in the technical field of welding, heat generated by welding of an assembly with the large length-diameter ratio easily causes sealing failure of the assembly is solved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a welding device for a product with a sealing foil having a large aspect ratio. Background Art

[0002] In the prior art, the first part is a barrel-shaped body, the cross-sectional diameter of the lower half of the first part is smaller than the cross-sectional diameter of the upper half, the second part is a tube, the inner diameter of the second part is smaller than the cross-sectional diameter of the lower half of the first part, the lower half of the first part is provided with a through hole, the lower half of the first part is inserted into the second part, the first part and the second part are usually assembled by interference fit to achieve a tight connection, which requires extremely precise size matching between the two to ensure that the contact surface can withstand a certain pressure without leakage, and the assembled first part and the second part have a large aspect ratio. In order to further enhance the sealing effect, a layer of high-performance sealing foil is usually attached to the surface of the first part, which is fixed to the first part by a special adhesive and bears the main sealing function of the product. Its design can withstand high temperatures up to 150°C without failure.

[0003] However, in actual applications, since the joint between the first part and the second part needs to be welded, a large amount of heat generated during the welding process will not only accumulate inside the second part, but will also directly affect the sealing foil, which may cause the local temperature to rise rapidly. In addition, the large aspect ratio of the first part and the second part makes it difficult for the heat to be dissipated quickly, and it is easy to form a heat accumulation area, thereby increasing the risk of heat failure of the sealing foil, affecting the sealing performance and overall reliability of the product. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a welding device for products with large aspect ratio and sealing foil, so as to solve the technical problem in the field of welding technology that the heat generated by welding assemblies with large aspect ratios can easily lead to sealing failure of the assemblies.

[0005] In order to achieve the above technical objectives, the technical solution of the present invention provides a welding device for a product with a large aspect ratio and a sealing foil, comprising:

[0006] A clamping mechanism and a cooling mechanism; a rotating driving source is provided at the lower end of the clamping mechanism; the output end of the rotating driving source is drivingly connected to the fixed end of the clamping mechanism; the fixed end of the rotating driving source is detachably fixedly connected to the table top of the working machine; the cooling mechanism includes a cooling pipe, a cooling source and a supporting assembly; the cooling pipe is barrel-shaped; the top end of the cooling pipe is in a closed state; the lower end of the cooling pipe is in an open state; a cooling hole is provided on the peripheral wall of the cooling pipe; the cooling hole passes through the cooling pipe; the cooling hole is arranged at a 45° angle to the pipe wall of the cooling pipe; the horizontal plane of the exhaust port of the cooling hole is lower than the air inlet of the cooling pipe.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] High welding quality and high product qualification rate: The welding device for products with sealing foil having a large aspect ratio provided by the invention utilizes a cooling mechanism to rapidly cool down products with sealing foil having a large aspect ratio during welding, and rapidly discharges the high temperature generated by welding out of the inner cavity of the second part through the gas discharged through the cooling hole, so as to prevent the sealing foil from being damaged due to excessive temperature, thereby causing failure of the sealing between the first part and the second part, thereby greatly improving the qualification rate of this series of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the working state of the welding device for the product with sealing foil having a large aspect ratio provided by the present invention;

[0010] Figure 2 It is a schematic diagram of the three-dimensional structure of the welding device for the product with sealing foil having a large aspect ratio provided by the present invention;

[0011] Figure 3 It is a schematic diagram of the position arrangement of the parts A, B and cooling pipes provided by the present invention when in working state;

[0012] Figure 4 It is a schematic diagram of the exploded structure of the assembly of parts A and B provided by the present invention;

[0013] Figure 5 It is a schematic cross-sectional structural diagram of a cooling pipe provided by the present invention;

[0014] Figure 6 It is a schematic diagram of the three-dimensional structure of the assembly of parts A and B provided by the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0018] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 ,in Figure 3 as well as Figure 5 The arrows in the figure represent the direction of gas flow.

[0019] This embodiment provides a welding device for a sealing foil product with a large aspect ratio, comprising: a clamping mechanism 1 , a cooling mechanism 2 and a working machine 3 .

[0020] In this embodiment, the following explanation is required: since the first part 5 is a hollow structure with through holes in its upper and lower halves, in order to ensure the sealing of the assembly of the first part 5 and the second part 6, it is necessary to stick the sealing foil 7 at the contact point between the first part 5 and the second part 6, and the sealing foil 7 is made of aluminum foil.

[0021] Furthermore, the welding device for a product with a large aspect ratio and a sealing foil provided in the present embodiment is used for welding a first part 5 and a second part 6, wherein both the first part 5 and the second part 6 are metal parts, the first part 5 is a barrel-shaped body, the cross-sectional diameter of the lower half of the first part 5 is smaller than the cross-sectional diameter of the upper half, the second part 6 is tubular, the inner diameter of the second part 6 is smaller than the cross-sectional diameter of the lower half of the first part 5, a through hole is provided in the lower half of the first part 5, a sealing foil 7 is pasted on the outer peripheral wall of the lower half of the first part 5, the lower half of the first part 5 is inserted into the second part 6, and the first part 5 and the second part 6 are assembled by interference fit.

[0022] Furthermore, the clamping mechanism 1 comprises a chuck 11, a clamping claw 12 and a clamping drive source. The output end of the clamping drive source is drivingly connected to the chuck 11, the bottom end of the clamping claw 12 is fixedly connected to the chuck 11, and three chucks 11 and clamping claws 12 are arranged in a circumferential array.

[0023] Furthermore, the clamping mechanism 1 adopts a pneumatically driven three-jaw chuck, and the three chucks 11, the clamping jaws 12 and the clamping drive source are arranged in a circular array with an interval of 120° between adjacent ones.

[0024] Furthermore, when the first part 5 and the second part 6 assembly are clamped, the output ends of the three clamping drive sources extend simultaneously, thereby driving the chuck 11 and the claw 12 to move toward the first part 5 and the second part 6 assembly, thereby clamping the first part 5 and the second part 6 assembly, wherein a slider guide assembly is also provided at the lower end of the chuck 11 for guiding the linear movement of the chuck 11 and the claw 12 to ensure that they open and close smoothly and synchronously.

[0025] Furthermore, in this embodiment, the clamping drive source selects a pneumatic drive source, which has the following advantages in this embodiment: 1. Rapid clamping improves work efficiency: the pneumatic drive source can quickly respond to operating instructions, and can achieve instant automatic centering and clamping of the workpiece by pressing a button. It improves work efficiency and reduces human resource costs; 2. Large clamping force and wide range: the pneumatic drive source provides a strong clamping force, which is suitable for workpieces of various sizes and shapes. It can apply sufficient clamping force to workpieces with larger diameters while maintaining high precision, ensuring stability during processing; 3. High clamping accuracy: the pneumatic drive source adopts a fully enclosed structure, selects high-quality materials and precision manufacturing processes, effectively prevents dust and other impurities from entering, ensures accuracy and reliability under long-term operation, and can ensure that the circumferential and radial runout of the first part 5 and the second part 6 assembly after clamping is within a very small range, usually within 0.15mm.

[0026] Furthermore, a rotation driving source 4 is provided at the lower end of the clamping mechanism 1 , the output end of the rotation driving source 4 is drivingly connected to the fixed end of the clamping mechanism 1 , and the fixed end of the rotation driving source 4 is detachably fixedly connected to the tabletop of the working machine 3 .

[0027] Furthermore, when the clamping mechanism 1 clamps the first part 5 and the second part 6 assembly for welding, the first part 5 and the second part 6 assembly needs to be rotated, and the rotation drive source 4 works to drive the clamping mechanism 1 to rotate relative to the work machine 3.

[0028] Further, preferably, the rotation drive source 4 is a pneumatic drive source.

[0029] Furthermore, the cooling mechanism 2 includes a cooling pipe 21 , a cooling source 22 and a support assembly 23 , and the support assembly 23 is used to support, position and fix the cooling pipe 21 .

[0030] Furthermore, the cooling tube 21 is barrel-shaped, and the top end of the cooling tube 21 is in a closed state to prevent the gas from blowing to the joint position of the sealing foil 7 and the first part 5 in a high-temperature environment, and directly blow the two apart.

[0031] The lower end of the cooling pipe 21 is in an open state, and a cooling hole 21a is opened on the peripheral wall of the cooling pipe 21. The cooling hole 21a runs through the cooling pipe 21. The cooling hole 21a is arranged at a 45° angle to the wall of the cooling pipe 21, and the horizontal plane of the exhaust port of the cooling hole 21a is lower than the air inlet of the cooling pipe 21.

[0032] Furthermore, when the first part 5 and the second part 6 are assembled and welded, the lower end of the cooling pipe is connected to the output end of the cooling source 22 for gas to flow in. Since the top end of the cooling pipe 21 is closed, the cooling hole 21a is opened in the upper part, and the gas in the cooling pipe 21 flows out through the cooling hole 21a.

[0033] Furthermore, since the cooling hole 21a is arranged at an angle of 45° to the tube wall of the cooling tube 21, the horizontal plane of the exhaust port 21b of the cooling hole 21a is lower than the air inlet 21c of the cooling tube 21, and the gas discharged through the cooling hole 21a is discharged downward at an angle of 45° to the horizontal plane.

[0034] Furthermore, since the cooling tube 21 is placed in the inner cavity of the second part 6 when welding the first part 5 and the second part 6 assembly, the heat generated during the welding of the connection between the first part 5 and the second part 6 is quickly discharged from the inner cavity of the second part 6 through the gas discharged through the cooling hole 21a, so as to prevent the sealing foil 7 from being damaged by excessive temperature and causing failure of the seal between the first part 5 and the second part 6.

[0035] Furthermore, the support assembly 23 includes a first connecting member 231, a second connecting member 232 and a support plate 233, one end of the first connecting member 231 is fixedly connected to one end of the second connecting member 232 by obtuse angle welding, the other end of the first connecting member 231 is detachably fixedly connected to one side of the fixed end of the clamping mechanism 1, and the other end of the second connecting member 232 is fixedly connected to one side of the support plate 233 by welding.

[0036] Furthermore, the first connecting member 231 is welded and fixed to the fixed end of the clamping mechanism 1. When the clamping mechanism 1 rotates, the supporting assembly 23 is stationary relative to the clamping mechanism 1 to prevent motion interference.

[0037] Furthermore, the support plate 233 is provided with a cooling pipe mounting hole 233a and a cooling pipe exhaust hole 233b. The cooling pipe mounting hole 233a passes through the support plate 233 up and down and is arranged at the center of the support plate 233. The diameter of the cooling pipe mounting hole 233a is equal to the outer diameter of the cooling pipe 21, and the cooling pipe exhaust hole 233b passes through the support plate 233.

[0038] Furthermore, the cooling pipe installation hole 233a provided on the support plate 233 is used to limit the cooling pipe 21 to prevent the cooling pipe 21 from moving in a horizontal plane.

[0039] Furthermore, the cooling pipe exhaust hole 233b is used to exhaust the gas flowing out of the inner cavity of the second part 6 from top to bottom, so as to prevent the inner cavity of the second part 6 from being blocked by gas and the heat cannot be discharged.

[0040] Furthermore, the cooling pipe 21 is placed in the cooling pipe mounting hole 233a, and the lower end of the cooling pipe 21 is connected to an air pipe. An air pipe mounting hole that runs through the upper and lower parts is opened at the center of the clamping mechanism 1. The air pipe passes through the air pipe mounting hole and is connected to the output end of the cooling source 22 arranged at the lower end of the working machine 3, so as to supply air to the cooling pipe 21.

[0041] Furthermore, the cross-sectional area of ​​the support plate 233 is larger than the cross-sectional area of ​​the second part 6, and is used to limit the vertical position of the assembly of the first part 5 and the second part 6. In the welding state, the upper end surface of the cooling tube 21 is infinitely close to the lower end surface of the first part 5, which is convenient for driving the gas flow to the maximum extent to achieve the best cooling effect.

[0042] Furthermore, in this embodiment, the temperature at the sealing foil 7 can be ensured by the aperture and number of the cooling holes 21 a, and the pressure and cooling time provided by the cooling source 22, so that the optimal cooling effect can be achieved through the corresponding combination.

[0043] Working principle: The welding device for sealing foil products with a large aspect ratio provided by the invention includes a clamping mechanism 1, a cooling mechanism 2 and a working machine 3. A rotary drive source 4 is provided at the lower end of the clamping mechanism 1, and the output end of the rotary drive source 4 is drivingly connected to the fixed end of the clamping mechanism 1, and the fixed end of the rotary drive source 4 is detachably fixedly connected to the table top of the working machine 3. When the clamping mechanism 1 clamps the assembly of the first part 5 and the second part 6 for welding, the assembly of the first part 5 and the second part 6 needs to be rotated, and the rotary drive source 4 works to drive the clamping mechanism 1 to rotate relative to the working machine 3. The cooling mechanism 2 includes a cooling pipe 21, a cooling source 22 and a support assembly 23, and the support assembly 23 is used to support, position and fix the cooling pipe 21. The lower end of the cooling pipe 21 is in an open state, and a cooling hole 21a is opened on the peripheral wall of the cooling pipe 21. The cooling hole 21a runs through the cooling pipe 21. The cooling hole 21a is arranged at a 45° angle to the wall of the cooling pipe 21, and the horizontal plane of the exhaust port of the cooling hole 21a is lower than the air inlet of the cooling pipe 21.

[0044] Specifically, when welding the assembly of the first part 5 and the second part 6, the assembly of the first part 5 and the second part 6 is placed on the support plate 23, the cooling tube 21 is inserted into the second part 6, and the clamping mechanism 1 works to clamp and center the assembly of the first part 5 and the second part 6. When the clamping mechanism 1 is driven to rotate by the rotation drive source 4, the cooling source 22 works simultaneously with it to provide gas into the cooling tube 21. At this time, the welding gun 8 moves to the connection between the first part 5 and the second part 6 for welding. The high temperature generated by welding is quickly discharged from the inner cavity of the second part 6 through the gas discharged through the cooling hole 21a to prevent the sealing foil 7 from being damaged due to excessive temperature, resulting in failure of the seal between the first part 5 and the second part 6.

[0045] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A welding device for a product with a large aspect ratio and a sealing foil, used for welding a first part and a second part, characterized in that: include: A clamping mechanism and a cooling mechanism; a rotating driving source is provided at the lower end of the clamping mechanism; the output end of the rotating driving source is drivingly connected to the fixed end of the clamping mechanism; the fixed end of the rotating driving source is detachably fixedly connected to the table top of the working machine; the cooling mechanism includes a cooling pipe, a cooling source and a supporting assembly; the cooling pipe is barrel-shaped; the top end of the cooling pipe is in a closed state; the lower end of the cooling pipe is in an open state; a cooling hole is provided on the peripheral wall of the cooling pipe; the cooling hole passes through the cooling pipe; the cooling hole is arranged at a 45° angle to the pipe wall of the cooling pipe; the horizontal plane of the exhaust port of the cooling hole is lower than the air inlet of the cooling pipe.

2. The welding device for sealing foil products with large aspect ratio according to claim 1 is characterized in that: The support assembly includes a first connecting member, a second connecting member and a support plate; one end of the first connecting member is fixedly connected to one end of the second connecting member by welding at an obtuse angle; the other end of the first connecting member is detachably fixedly connected to one side of the fixed end of the clamping mechanism; the other end of the second connecting member is fixedly connected to one side of the support plate by welding.

3. The welding device for sealing foil products with large aspect ratio according to claim 2 is characterized in that: The support plate is provided with a cooling pipe mounting hole and a cooling pipe exhaust hole; the cooling pipe mounting hole passes through the support plate up and down and is arranged at the center of the support plate; the diameter of the cooling pipe mounting hole is equal to the outer diameter of the cooling pipe; the cooling pipe exhaust hole passes through the support plate.

4. The welding device for sealing foil products with large aspect ratio according to claim 3 is characterized in that: The cooling pipe is placed in the cooling pipe mounting hole; the lower end of the cooling pipe is connected with an air pipe; an air pipe mounting hole that runs through the center of the clamping mechanism is opened up and down; the air pipe passes through the air pipe mounting hole and is connected with the output end of the cooling source arranged at the lower end of the working machine.

5. The welding device for sealing foil products with large aspect ratio according to claim 4 is characterized in that: The cross-sectional area of ​​the support plate is larger than the cross-sectional area of ​​the second part; in the welding state, the upper end surface of the cooling tube is infinitely close to the lower end surface of the first part.

6. The welding device for sealing foil products with large aspect ratio according to claim 5 is characterized in that: The first part is a barrel-shaped body; the cross-sectional diameter of the lower half of the first part is smaller than the cross-sectional diameter of the upper half; the second part is tubular; the inner diameter of the second part is smaller than the cross-sectional diameter of the lower half of the first part; a through hole is provided in the lower half of the first part; a sealing foil is pasted on the outer peripheral wall of the lower half of the first part; the lower half of the first part is inserted into the second part; the first part and the second part are assembled by interference fit.

7. The welding device for sealing foil products with large aspect ratio according to claim 6 is characterized in that: The clamping mechanism comprises a chuck, a clamping claw and a clamping drive source; the output end of the clamping drive source is drivingly connected to the chuck; the bottom end of the clamping claw is fixedly connected to the chuck; and three chucks and clamping claws are arranged in a circular array.

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