A precision automatic welding equipment for parts

Abstract

The application belongs to the technical field of intelligent welding equipment, and specifically discloses a precision automatic welding equipment for parts, which comprises a workbench, a mounting frame is fixedly connected to the top of the workbench, a welding structure is arranged on the inner top wall of the mounting frame, and a placing mechanism located above the workbench is arranged on the inner side of the mounting frame; the placing mechanism comprises a connecting frame slidingly connected to the inner side of the workbench, and guide blocks are fixedly connected to the inner walls of the mounting frame on both sides; the auxiliary structure can preheat another working cavity during the welding process, so that the parts placed in the other working cavity are fully preheated, the temperature difference between the remaining positions of the parts and the welding points during the welding process is reduced, the deformation of the parts caused by the temperature difference is avoided, the welding effect is improved, and when the parts in one working cavity are welded, the limiting preheating work on the un-welded parts in the other working cavity can be simultaneously completed, so that the work efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of intelligent welding equipment technology, and specifically relates to an automatic welding equipment for precision parts. Background Technology

[0002] As the foundation of the automotive industry, auto parts are a necessary factor to support the industry's continued healthy development. In particular, the current vigorous independent development and innovation in the automotive industry requires a strong parts system for support. Welding is often required, and since manual welding can be very harmful to workers, some auto parts are welded using automated welding equipment to avoid the risk of injury from sparks generated during the process.

[0003] A search revealed a Chinese patent (publication number CN214868223U) disclosing an automatic welding device for processing automotive parts. This patented technology, through the configuration of a first lead screw, a limiting plate, a rack, and a welding mechanism, ensures effective fixation of the parts by the limiting plate simultaneously fixing multiple surfaces of the parts when the clamping plate secures both sides of the parts, preventing slippage during operation. The device is also suitable for welding parts of various shapes, guaranteeing its effectiveness. However, during welding, the significant temperature difference between the surface of the placed parts and the welding torch can easily cause deformation due to temperature variations around the parts and at the weld point, affecting the welding result. Therefore, those skilled in the art have developed an automatic welding device for precision parts to address the problems mentioned in the background section. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic welding device for precision parts.

[0005] To achieve the above objectives, the present invention provides an automatic welding equipment for precision parts, including a worktable. A mounting frame is fixedly connected to the top of the worktable. A welding structure is provided on the inner top wall of the mounting frame. A placement mechanism is provided on the inner side of the mounting frame above the worktable. The placement mechanism includes a connecting frame slidably connected to the inner side of the worktable. Guide blocks are fixedly connected to both sides of the inner wall of the mounting frame, and the two guide blocks are symmetrically distributed. Two working cavities are formed on the surface of the connecting frame. A limiting structure is provided inside each working cavity. An auxiliary structure is provided inside the connecting frame. The auxiliary structure includes an adjustment cavity formed inside the connecting frame. A partition is fixedly connected to the inner wall of the adjustment cavity. Mounting holes are evenly distributed and connected to adjacent working cavities on both sides of the inner wall of the adjustment cavity. Auxiliary components are provided inside each mounting hole, and the mounting orientations of two adjacent auxiliary components are opposite. An installation cavity is formed inside the connecting frame below the adjustment cavity. Two sets of symmetrically distributed connecting holes are formed on the inner top wall of the installation cavity. A one-way valve is provided inside each connecting hole. A fan is provided inside the installation cavity.

[0006] In the above technical solution, the inner wall of the mounting cavity is provided with two sets of staggered exhaust channels on both sides, and the other end of the exhaust channel is connected to the adjustment cavity.

[0007] In the above technical solution, the inner wall of the adjustment cavity is further provided with two symmetrically distributed sliding plates, one end of which extends through the connecting frame and is located on the same horizontal line as the guide block, and through holes are provided on the surface of both sliding plates.

[0008] In the above technical solution, the through holes on the two surfaces of the sliding plate are staggered, the through holes are connected to the adjacent mounting holes, and the surface of the sliding plate is fixedly connected with baffles that are staggered with the through holes.

[0009] In the above technical solution, the auxiliary component further includes a mounting plate fixedly connected to the inner wall of the mounting hole, a mounting rod fixedly connected to one side of the mounting plate, a through groove opened on the surface of the mounting rod, a sealing ring slidably connected to the surface of the mounting rod, and the outer edge of the sealing ring contacting the inner wall of the mounting hole.

[0010] In the above technical solution, a return spring is further fixedly connected to the surface of the sealing ring, and the other end of the return spring is fixedly connected to the surface of the mounting plate.

[0011] In the above technical solution, the limiting structure further includes two connecting blocks that slide on the inner wall of the working cavity and are symmetrically distributed. A connecting plate is fixedly connected to the surface of the connecting block. The other end of the connecting plate extends through the connecting frame, and a bidirectional lead screw is fixedly connected to one side of the connecting frame. The connecting plate and the bidirectional lead screw are threadedly connected.

[0012] In the above technical solution, the connecting block is further provided with uniformly distributed sliding cavities inside. A sliding plate is slidably connected to the inner wall of the sliding cavity. A connecting rod is fixedly connected to one side of the sliding plate. The other end of the connecting rod passes through the connecting block and is fixedly connected to a connecting shell. A compression bladder is provided at the other end of the connecting shell. A first spring is fixedly connected between the connecting shell and the surface of the connecting block.

[0013] In the above technical solution, the connecting rod is further provided with a liquid storage cavity inside, and a squeezing plate is slidably connected to the inner wall of the liquid storage cavity. A second spring is fixedly connected between one side of the squeezing plate and the liquid storage cavity. A liquid passage hole communicating with the connecting shell is provided on the surface of the connecting rod. Hydraulic oil is filled between the end of the squeezing plate away from the second spring and the inside of the liquid storage cavity.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By setting up an auxiliary structure, the other working chamber can be preheated during the welding process, so that the parts placed in the other working chamber are fully preheated, reducing the temperature difference between the other parts and the welding point during the welding process, avoiding the deformation of the parts due to temperature difference, and improving the welding effect. At the same time, when welding the parts in one working chamber, the limiting preheating of the unwelded parts can be completed simultaneously in the other working chamber, improving work efficiency.

[0016] By setting a limiting structure, the compression bladder can first contact the surface of the component during the limiting process. Due to the combined action of the compression plate and the second spring, the hydraulic oil inside the reservoir is injected into the compression bladder, causing it to bulge. After contacting the surface of the component, it adheres to the surface and gradually deforms due to the obstruction of the surface. At this time, the hydraulic oil is guided back into the reservoir through the fluid passage to press the compression plate and compress the second spring. The deformed compression bladder can then adhere to the surface of the component, making it suitable for fixing components with irregular surfaces, thus improving the applicability of the structure and simplifying operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an automatic welding equipment for precision parts proposed in this invention;

[0018] Figure 2This is a partial cross-sectional schematic diagram of an automatic welding equipment for precision parts proposed in this invention;

[0019] Figure 3 This is a schematic diagram showing the distribution of guide blocks in an automatic welding equipment for precision parts proposed in this invention.

[0020] Figure 4 This is a schematic diagram of the connection between the connecting plate and the bidirectional lead screw in an automatic welding equipment for precision parts proposed in this invention;

[0021] Figure 5 This is a schematic diagram showing the connection between the extrusion bladder and the connecting shell of an automatic welding equipment for precision parts proposed in this invention;

[0022] Figure 6 for Figure 5 Enlarged view of A in the middle;

[0023] Figure 7 This is a schematic diagram showing the distribution of the adjustment cavity and the mounting cavity in an automatic welding equipment for precision parts proposed in this invention.

[0024] Figure 8 This is a schematic diagram showing the connection between the sealing ring and the mounting rod in an automatic welding equipment for precision parts according to the present invention.

[0025] In the diagram: 1. Workbench; 101. Mounting bracket; 2. Placement mechanism; 201. Connecting bracket; 202. Guide block; 21. Auxiliary structure; 2101. Adjustment chamber; 2102. Mounting chamber; 2103. One-way valve; 2104. Fan; 2105. Slide plate; 2106. Through hole; 2107. Partition plate; 2108. Mounting hole; 2109. Baffle plate; 2110. Exhaust passage; 2111. Mounting plate; 2112. Mounting rod; 2113, sealing ring; 2114, return spring; 2115, through groove; 22, limiting structure; 2201, double-acting lead screw; 2202, connecting plate; 2203, connecting block; 2204, sliding cavity; 2205, sliding plate; 2206, first spring; 2207, compression bladder; 2208, connecting rod; 2209, second spring; 2210, compression plate; 2211, connecting shell; 3, welded structure. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1-8The automatic welding equipment for precision parts shown includes a worktable 1. A mounting frame 101 is fixedly connected to the top of the worktable 1. A welding structure 3 is provided on the inner top wall of the mounting frame 101. A placement mechanism 2 located above the worktable 1 is provided on the inner side of the mounting frame 101. The placement mechanism 2 includes a connecting frame 201 slidably connected to the inner side of the worktable 1. Guide blocks 202 are fixedly connected to both sides of the inner wall of the mounting frame 101. The two guide blocks 202 are symmetrically distributed. Two working cavities are formed on the surface of the connecting frame 201. A limiting structure 22 is provided inside the working cavity. An auxiliary structure 21 is provided inside the connecting frame 201. The auxiliary structure 21 includes... The device includes an adjustment cavity 2101 located inside the connecting frame 201. A partition 2107 is fixedly connected to the inner wall of the adjustment cavity 2101. Mounting holes 2108, which are evenly distributed and connected to adjacent working cavities, are opened on both sides of the inner wall of the adjustment cavity 2101. An auxiliary component is installed inside the mounting hole 2108, and the mounting orientation of two adjacent auxiliary components is opposite. An installation cavity 2102 located below the adjustment cavity 2101 is opened inside the connecting frame 201. Two sets of symmetrically distributed connecting holes are opened on the inner top wall of the installation cavity 2102. A one-way valve 2103 is installed inside the connecting hole. A fan 2104 is installed inside the installation cavity 2102.

[0028] The one-way valve 2103 allows air inside the regulating chamber 2101 to enter the mounting chamber 2102 in one direction, and the partition 2107 divides the interior of the regulating chamber 2101 into two independent chambers, so that the flow of gas in the two chambers will not interfere with each other.

[0029] like Figures 1-8 As shown, the inner wall of the mounting cavity 2102 has two sets of staggered exhaust channels 2110 on both sides. The other end of the exhaust channel 2110 is connected to the adjustment cavity 2101. The inner wall of the adjustment cavity 2101 is slidably connected to two symmetrically distributed sliding plates 2105. One end of the sliding plate 2105 passes through the connecting frame 201 and is located on the same horizontal line as the guide block 202. The surfaces of the two sliding plates 2105 are provided with through holes 2106. The through holes 2106 on the surfaces of the two sliding plates 2105 are staggered. The through holes 2106 are connected to the adjacent mounting holes 2108. The surfaces of the sliding plates 2105 are fixedly connected to baffles 2109 that are staggered with the through holes 2106.

[0030] Under the action of the guide block 202, the position of the two slide plates 2105 can be adjusted during the sliding of the connecting frame 201 along the surface of the workbench 1. The guide block 202 pushes the slide plates 2105 to slide along the inner wall of the connecting frame 201. Since the through holes 2106 on the surface of the two slide plates 2105 are staggered, the connection between them and the mounting holes 2108 on both sides and the interior of the adjustment cavity 2101 is also staggered. As the baffle 2109 moves with the slide plate 2105, the baffle 2109 on one side of the slide plate 2105 blocks the exhaust channel 2110, and the baffle 2109 on the other side is staggered with the exhaust channel 2110, so that the gas guided into the mounting cavity 2102 by the fan 2104 can only be discharged through the unblocked exhaust channel 2110.

[0031] The diameter of the exhaust channel 2110 is larger than the opening diameter of the connection hole. This design can prevent a large amount of gas from flowing back into the interior of the mounting cavity 2102.

[0032] like Figures 1-8 As shown, the auxiliary component includes a mounting plate 2111 fixedly connected to the inner wall of the mounting hole 2108. A mounting rod 2112 is fixedly connected to one side of the mounting plate 2111. A through groove 2115 is opened on the surface of the mounting rod 2112. A sealing ring 2113 is slidably connected to the surface of the mounting rod 2112. The outer edge of the sealing ring 2113 contacts the inner wall of the mounting hole 2108. A return spring 2114 is fixedly connected to the surface of the sealing ring 2113. The other end of the return spring 2114 is fixedly connected to the surface of the mounting plate 2111.

[0033] By pushing the sealing ring 2113, it can slide along the surface of the mounting rod 2112, and in this process, it can move to the through groove 2115. At this time, the gas can bypass the sealing ring 2113 through the through groove 2115. By adjusting the position of the sliding plate 2105 through the guide block 202, the gas inside the working chamber located below the welded structure 3 can be pushed by the starting fan 2104 through the mounting hole 2108 to push the sealing ring 2113 and through the through groove 2115 and the corresponding through hole 2106 into the interior of the regulating chamber 2101, and then into the connection hole and the one-way valve 2103. Under the action of the gas, the gas is introduced into the mounting cavity 2102. The exhaust channel 2110 on the side near the welding structure 3 is blocked by the baffle 2109, so that the gas cannot flow back to this side. It can only be introduced into the other side of the partition 2107 through the exhaust channel 2110 on the other side, and discharged into another working cavity through the mounting hole 2108. The other working cavity is used to place the unwelded parts. In this process, the residual heat generated during the welding process can be used to preheat the unwelded parts, improve the subsequent welding effect, and reduce the heat damage to other parts caused by the heat emitted during the welding process.

[0034] like Figures 1-8 As shown, the limiting structure 22 includes two connecting blocks 2203 that slide on the inner wall of the working cavity and are symmetrically distributed. A connecting plate 2202 is fixedly connected to the surface of the connecting block 2203. The other end of the connecting plate 2202 passes through the connecting frame 201, and a bidirectional lead screw 2201 is fixedly connected to one side of the connecting frame 201. The connecting plate 2202 and the surface of the bidirectional lead screw 2201 are threadedly connected.

[0035] The connecting block 2203 has evenly distributed sliding cavities 2204 inside. A sliding plate 2205 is slidably connected to the inner wall of the sliding cavity 2204. A connecting rod 2208 is fixedly connected to one side of the sliding plate 2205. The other end of the connecting rod 2208 passes through the connecting block 2203 and is fixedly connected to a connecting shell 2211. A compression bladder 2207 is provided at the other end of the connecting shell 2211. A first spring 2206 is fixedly connected between the connecting shell 2211 and the surface of the connecting block 2203.

[0036] The connecting rod 2208 has a liquid storage chamber inside, and a squeezing plate 2210 is slidably connected to the inner wall of the liquid storage chamber. A second spring 2209 is fixedly connected between one side of the squeezing plate 2210 and the liquid storage chamber. A liquid passage hole connected to the connecting shell 2211 is opened on the surface of the connecting rod 2208. Hydraulic oil is filled between the end of the squeezing plate 2210 away from the second spring 2209 and the inside of the liquid storage chamber.

[0037] Rotating the bidirectional lead screw 2201 causes the two threaded connecting plates 2202 to move closer together, which in turn causes the two connecting blocks 2203 to move closer together. During this process, the compression bladder 2207 can move closer to the parts placed inside the working chamber. The compression bladder 2207 can first contact the surface of the parts. Due to the combined action of the compression plate 2210 and the second spring 2209, the hydraulic oil inside the reservoir is injected into the compression bladder 2207, causing the compression bladder 2207 to bulge. After contacting the surface of the parts, it adheres to the surface of the parts and gradually deforms due to the obstruction of the surface of the parts. At this time, the hydraulic oil is guided back into the reservoir through the fluid passage to pressurize the compression plate 2210 and compress the second spring 2209. At this time, the deformed compression bladder 2207 can conform to the surface of the component, making it suitable for fixing components with irregular surfaces, improving the applicability of the structure, and avoiding the situation where the traditional limiting method has a poor fixing and limiting effect on components with irregular surfaces. At the same time, the cooperation of the connecting rod 2208, the first spring 2206, the sliding plate 2205 and the sliding cavity 2204 can avoid damage to the surface of the component due to excessive compression. When excessive compression occurs, the connecting shell 2211 is blocked by the surface of the component, causing the connecting rod 2208 to retract into the interior of the sliding cavity 2204. At this time, the first spring 2206 can be compressed, which will not cause excessive compression to the component and thus prevent damage. This provides a certain degree of fault tolerance for the limiting process.

[0038] Working principle: By adjusting the position of the slide plate 2105 through the guide block 202, the gas inside the working chamber located below the welding structure 3 can be pushed through the mounting hole 2108 to push the sealing ring 2113 and through the through groove 2115 and the corresponding through hole 2106 into the regulating chamber 2101 under the action of the starting fan 2104. Then, under the action of the connecting hole and the one-way valve 2103, it is introduced into the mounting chamber 2102. The exhaust channel 2110 on the side closer to the welding structure 3 is blocked by the baffle 2109, so that the gas cannot flow back to this side and can only flow through the exhaust channel 2110 on the other side. 110 is introduced to the other side of the partition 2107 and discharged into another working chamber through the mounting hole 2108. The other working chamber is used to place unwelded parts. In this process, the residual heat generated during the welding process can be used to preheat the unwelded parts, improve the subsequent welding effect, and reduce the heat damage to other parts caused by the heat emitted during the welding process. With the cooperation of the limiting structure 22 and the two working chambers, the parts in the other working chamber can be limited and preheated while the parts in one working chamber are being welded, thus improving work efficiency.

[0039] Rotating the bidirectional lead screw 2201 can drive the two threaded connecting plates 2202 to move closer together, thereby driving the two connecting blocks 2203 to move closer together. During this process, the compression bladder 2207 can move closer to the parts placed inside the working chamber. The compression bladder 2207 can first contact the surface of the parts. Due to the combined action of the compression plate 2210 and the second spring 2209, the hydraulic oil inside the reservoir is injected into the compression bladder 2207, causing the compression bladder 2207 to bulge. After contacting the surface of the parts, it adheres to the surface of the parts and is gradually deformed by the obstruction of the surface of the parts. At this time, the hydraulic oil is guided back into the reservoir through the liquid passage to press the compression plate 2210 and compress the second spring 2209. The deformed compression bladder 2207 can adhere to the surface of the parts, making it suitable for fixing parts with irregular surfaces and improving the applicability of the structure.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An automatic welding equipment for precision parts, comprising a worktable (1), characterized in that, The top of the workbench (1) is fixedly connected to a mounting frame (101), the inner top wall of the mounting frame (101) is provided with a welding structure (3), and the inner side of the mounting frame (101) is provided with a placement mechanism (2) located above the workbench (1). The placement mechanism (2) includes a connecting frame (201) slidably connected to the inner side of the workbench (1). Guide blocks (202) are fixedly connected to both sides of the inner wall of the mounting frame (101). The two guide blocks (202) are symmetrically distributed. Two working cavities are opened on the surface of the connecting frame (201). A limiting structure (22) is provided inside the working cavity. An auxiliary structure (21) is provided inside the connecting frame (201). The auxiliary structure (21) includes an adjustment cavity (2101) inside the connecting frame (201). A partition (2107) is fixedly connected to the inner wall of the adjustment cavity (2101). The inner walls of the adjustment cavity (2101) are provided with uniformly distributed mounting holes (2108) that are connected to the adjacent working cavities. An auxiliary component is provided inside the mounting hole (2108), and the mounting orientations of two adjacent auxiliary components are opposite. An installation cavity (2102) located below the adjustment cavity (2101) is provided inside the connecting frame (201). The inner top wall of the installation cavity (2102) is provided with two sets of symmetrically distributed connecting holes. A one-way valve (2103) is provided inside the connecting hole. A fan (2104) is provided inside the installation cavity (2102).

2. The apparatus according to claim 1, wherein The inner wall of the mounting cavity (2102) has two sets of staggered exhaust channels (2110) on both sides, and the other end of the exhaust channel (2110) is connected to the adjustment cavity (2101).

3. The apparatus of claim 2, wherein the apparatus further comprises a plurality of sensors configured to detect the position of the plurality of precision parts. The inner wall of the adjustment cavity (2101) is slidably connected with two symmetrically distributed sliding plates (2105). One end of each sliding plate (2105) passes through the connecting frame (201) and is located on the same horizontal line as the guide block (202). Both sliding plates (2105) have through holes (2106) on their surfaces.

4. The apparatus according to claim 3, wherein Through holes (2106) are staggered on the surfaces of the two slide plates (2105). The through holes (2106) are connected to the adjacent mounting holes (2108). Baffles (2109) are fixedly connected to the surfaces of the slide plates (2105) and are staggered with the through holes (2106).

5. The apparatus of claim 4, wherein the apparatus further comprises a plurality of sensors for detecting the position of the workpiece and the position of the welding head. The auxiliary component includes a mounting plate (2111) fixedly connected to the inner wall of the mounting hole (2108). A mounting rod (2112) is fixedly connected to one side of the mounting plate (2111). A through groove (2115) is opened on the surface of the mounting rod (2112). A sealing ring (2113) is slidably connected to the surface of the mounting rod (2112). The outer edge of the sealing ring (2113) is in contact with the inner wall of the mounting hole (2108).

6. The apparatus of claim 5, wherein the apparatus further comprises a plurality of sensors for detecting the position of the workpiece and the position of the welding head. A return spring (2114) is fixedly connected to the surface of the sealing ring (2113), and the other end of the return spring (2114) is fixedly connected to the surface of the mounting plate (2111).

7. The apparatus of claim 1, wherein The limiting structure (22) includes two connecting blocks (2203) that slide on the inner wall of the working cavity and are symmetrically distributed. A connecting plate (2202) is fixedly connected to the surface of the connecting block (2203). The other end of the connecting plate (2202) passes through the connecting frame (201), and a bidirectional lead screw (2201) is fixedly connected to one side of the connecting frame (201). The connecting plate (2202) and the surface of the bidirectional lead screw (2201) are threadedly connected.

8. The apparatus of claim 7, wherein the apparatus further comprises a plurality of sensors for detecting the position of the workpiece and the position of the welding head. The connecting block (2203) has evenly distributed sliding cavities (2204) inside. A sliding plate (2205) is slidably connected to the inner wall of the sliding cavity (2204). A connecting rod (2208) is fixedly connected to one side of the sliding plate (2205). The other end of the connecting rod (2208) passes through the connecting block (2203) and is fixedly connected to a connecting shell (2211). A compression bladder (2207) is provided at the other end of the connecting shell (2211). A first spring (2206) is fixedly connected between the connecting shell (2211) and the surface of the connecting block (2203).

9. The apparatus of claim 8, wherein, The connecting rod (2208) has a liquid storage chamber inside, and a squeezing plate (2210) is slidably connected to the inner wall of the liquid storage chamber. A second spring (2209) is fixedly connected between one side of the squeezing plate (2210) and the liquid storage chamber. A liquid passage hole communicating with the connecting shell (2211) is opened on the surface of the connecting rod (2208). Hydraulic oil is filled between the end of the squeezing plate (2210) away from the second spring (2209) and the inside of the liquid storage chamber.

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