Efficient welding device for hydraulic oil cylinder

Abstract

The invention discloses an efficient welding device of a hydraulic oil cylinder, and relates to the technical field of oil cylinder welding. The efficient welding device comprises a main body frame, a conveying table is fixedly mounted on the surface of the mounting table, and a cylinder body is placed on the surface of the mounting table; the pressing mechanism comprises a plurality of pressing rods installed on the installation table and further comprises two pressing cylinders installed on the installation table, the pressing rods move upwards under the action of the transmission mechanism, the pressing cylinders make contact with the upper surface of the installation base all the time under the action of the extrusion springs due to the fact that the pressing rods are fixed, and the pressing cylinders move downwards along with rising of the transmission mechanism. Through the arrangement of the pressing rod and the pressing cylinder, the mounting seat is fixed between the pressing rod and the pressing cylinder under the limiting action of the pressing rod and the thrust action of the pressing cylinder, so that the purpose of automatically fixing the mounting seat is achieved, the positioning stability of the mounting seat when the mounting seat is welded on the cylinder body is ensured, and meanwhile, the positioning accuracy and stability are improved through positioning of the diagonal round holes of the mounting seat.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinder welding, in particular to a high-efficiency welding device for a hydraulic oil cylinder. Background Art

[0002] At present, with the development of manufacturing industry, many large machines have begun to use hydraulic cylinders for mechanical transmission. Hydraulic cylinders convert hydraulic energy into mechanical energy. There is no transmission gap during the transmission process, and the movement process is very smooth. In the manufacturing process of hydraulic cylinders, different mechanical processing processes are performed on the parts, and finally they are assembled to obtain the finished hydraulic cylinders.

[0003] At present, when welding the cylinder body of the hydraulic cylinder, the mounting seat needs to be welded to the cylinder body cylinder. However, during the welding process, when the position of the mounting seat is manually adjusted for welding, there is a welding deviation in the hole position of the mounting seat, resulting in that when installing the connecting rod of the hydraulic cylinder, the connecting rod cannot be normally installed on the cylinder and needs to be readjusted, which greatly affects the production efficiency of the hydraulic cylinder.

[0004] Based on this, the present invention designs a high-efficiency welding device for a hydraulic cylinder to solve the above problems. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide an efficient welding device for a hydraulic cylinder, aiming to solve the technical problems existing in the prior art mentioned in the background technology.

[0006] The embodiment of the present invention is implemented as follows: a high-efficiency welding device for a hydraulic cylinder, the device comprising: Main frame: including a mounting platform arranged on the main frame, a conveying platform is fixedly mounted on the surface of the mounting platform, and a cylinder body is placed on the surface of the mounting platform; The clamping mechanism includes a plurality of clamping rods mounted on the mounting platform, and two clamping cylinders mounted on the mounting platform. A plurality of mounting seats are placed on the surface of the conveying platform, and a compression spring is fixedly mounted on the surface of each clamping cylinder. Anti-pull mechanism: used to limit the mounting seat; Buckle mechanism: used to cooperate with the reverse pull mechanism to fix and clamp the mounting seat; Rotation mechanism: used to drive the mounting seat to rotate; Transmission mechanism: used to drive the mounting seat to move vertically; Docking mechanism: used to drive the butt welding between the mounting seat and the cylinder body.

[0007] Furthermore, the back-pull mechanism includes two fixed cylinders installed on the mounting table, a connecting cylinder is fixedly installed on the inner wall of each fixed cylinder, a back-thrust rod is slidably connected to the inner wall of the connecting cylinder, a tension spring is fixedly installed on the surface of the back-thrust rod, a clamping cylinder is slidably connected to the inner wall of the fixed cylinder, the clamping cylinder is slidably connected to the surface of the connecting cylinder, a swing rod is rotatably connected to the surface of the back-thrust rod, an end of the swing rod away from the back-thrust rod is rotatably connected to the clamping rod, the clamping rod and the swing rod are connected by a compression spring, an end of the clamping rod away from the swing rod is rotatably connected to the surface of the connecting cylinder, the back-thrust rod is arranged in a cross shape, and an end away from the swing rod is arranged in an arc surface.

[0008] Furthermore, the snap mechanism includes two snap cylinders installed on the mounting platform, each snap cylinder has a snap rod passing through its inner wall and is slidably connected to the snap rod, the snap rod is connected to the surface of the snap cylinder through a snap spring, and the snap rod is located inside the snap cylinder and is set to be hemispherical.

[0009] Furthermore, the device also includes a feedback mechanism, which includes a conical cylinder installed on a mounting table, a feedback spring fixedly installed on the surface of the conical cylinder, the surface of the conical cylinder contacts two sliding rods, the surface of each sliding rod is rotatably connected to two linkage rods, the sliding rod is slidably connected to the surface of the buckle cylinder, and each linkage rod is connected to a buckle rod at one end away from the sliding rod.

[0010] Furthermore, the rotating mechanism includes a rotating table installed on a mounting table, two rotating gears are fixedly installed on the surface of the rotating table, each rotating gear is meshed with a fixed rack, a snap cylinder is fixedly installed on the surface of the rotating table, a clamping cylinder passes through the interior of the rotating table and is slidably connected to the clamping cylinder, one end of the tension spring away from the reverse thrust rod is connected to the surface of the rotating table, a fixed cylinder is fixedly installed on the surface of the rotating table, and one end of the feedback spring away from the conical cylinder is connected to the surface of the rotating table.

[0011] Furthermore, the transmission mechanism includes two transmission motors installed on the mounting platform, and a transmission screw is fixedly installed at the output end of each transmission motor. The transmission screw and the screw slider form a spiral pair transmission, and a rotating gear passes through the interior of the screw slider and is rotationally connected to the rotating gear.

[0012] Furthermore, the docking mechanism includes a docking screw installed on the mounting table, the docking screw and the main sliding plate form a spiral pair transmission, a transmission motor is fixedly installed on the surface of the main sliding plate, a fixed rack is fixedly installed on the surface of the main sliding plate, and a transmission screw penetrates the interior of the main sliding plate and is rotationally connected to the transmission screw.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention enables the clamping rod to move upward under the action of the transmission mechanism. Since the clamping rod is fixed, the clamping cylinder is always in contact with the upper surface of the mounting seat under the action of the extrusion spring. As the transmission mechanism rises, the mounting seat is limited by the clamping rod and the thrust of the clamping cylinder, and is fixed between the clamping rod and the clamping cylinder, thereby achieving the purpose of automatically fixing the mounting seat, ensuring the stability of the positioning of the mounting seat when it is welded on the cylinder body, and at the same time, positioning is performed through the diagonal circular holes of the mounting seat, thereby increasing the accuracy and stability of positioning.

[0014] 2. The present invention rotates the mounting seat 90 degrees toward the cylinder body, and then the mounting seats at both ends move toward the cylinder body through the action of the docking mechanism, thereby ensuring that there is no welding deviation in the mounting holes of the two mounting seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a high-efficiency welding device for a hydraulic cylinder provided in an embodiment of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A; Figure 3 For the present invention Figure 1 Schematic diagram of the oblique cross-section structure; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at B; Figure 5 It is a cross-sectional structural schematic diagram of another viewing angle of a high-efficiency welding device for a hydraulic cylinder of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at C; Figure 7 For the present invention Figure 6 A schematic diagram of the structure at D of FIG. Figure 8 For the present invention Figure 6 A schematic diagram of the structure at E of FIG. Fig. 9 This is a schematic diagram of the installation position structure of the fixed rack of the present invention; Fig.10 For the present invention Fig. 9 Enlarged structural diagram of F.

[0016] In the attached drawings: 1, main frame; 101, mounting platform; 102, conveying platform; 103, cylinder body; 2, clamping mechanism; 201, clamping rod; 202, clamping cylinder; 203, mounting seat; 204, extrusion spring; 3, back-pull mechanism; 301, fixed cylinder; 302, connecting cylinder; 303, back-thrust rod; 304, tension spring; 305, swing rod; 306, compression spring; 4, buckle mechanism; 401, buckle rod; 40 2. Snap spring; 403. Snap cylinder; 5. Feedback mechanism; 501. Conical cylinder; 502. Feedback spring; 503. Sliding rod; 504. Linkage rod; 6. Rotating mechanism; 601. Rotating table; 602. Rotating gear; 603. Fixed rack; 7. Transmission mechanism; 701. Transmission motor; 702. Transmission screw; 703. Screw slider; 8. Docking mechanism; 801. Docking screw; 802. Main sliding plate. DETAILED DESCRIPTION

[0017] 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.

[0018] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, in one embodiment, a high-efficiency welding device for a hydraulic cylinder is provided, the device comprising: The main frame 1 includes a mounting platform 101 disposed on the main frame 1, a conveying platform 102 is fixedly mounted on the surface of the mounting platform 101, and a cylinder body 103 is placed on the surface of the mounting platform 101; The clamping mechanism 2 includes a plurality of clamping rods 201 mounted on the mounting platform 101, and two clamping cylinders 202 mounted on the mounting platform 101. A plurality of mounting seats 203 are placed on the surface of the conveying platform 102, and a compression spring 204 is fixedly mounted on the surface of each clamping cylinder 202; Anti-pull mechanism 3: used to limit the mounting seat 203; Buckle mechanism 4: used to cooperate with the reverse pulling mechanism 3 to fix and clamp the mounting seat 203; Rotating mechanism 6: used to drive the mounting seat 203 to rotate; Transmission mechanism 7: used to drive the mounting seat 203 to move in the vertical direction; Butt-jointing mechanism 8 is used to drive the mounting seat 203 and the cylinder body 103 to be butt-jointed and welded.

[0020] In practical application of the embodiment of the present invention, when performing welding operation on the mounting base 203, as shown in FIG. Figure 1 As shown, the output of the conveyor 102 causes the mounting seat 203 to be located directly below the clamping rod 201. At this time, the clamping rod 201 and the clamping cylinder 202 are driven downward by the action of the transmission mechanism 7. The clamping rod 201 first passes through the mounting hole of the mounting seat 203. At this time, as the clamping cylinder 202 descends, the clamping cylinder 202 contacts the surface of the mounting seat 203. At this time, under the action of the reaction force of the mounting seat 203, the clamping cylinder 202 moves upward, and then the clamping rod 201 is driven to move away from the central axis of the clamping cylinder 202 through the action of the reverse pulling mechanism 3, as shown in FIG. Figure 7 As shown, at this time, the clamping rod 201 is fixed under the action of the buckle mechanism 4, and at this time, the clamping rod 201 moves upward under the action of the transmission mechanism 7. Since the clamping rod 201 is fixed, the clamping cylinder 202 is always in contact with the upper surface of the mounting seat 203 under the action of the extrusion spring 204. As the transmission mechanism 7 rises, the mounting seat 203 is limited by the clamping rod 201 and the thrust of the clamping cylinder 202, and is fixed between the clamping rod 201 and the clamping cylinder 202, thereby achieving the purpose of automatically fixing the mounting seat 203, ensuring the stability of the positioning of the mounting seat 203 when it is welded on the cylinder body 103, and at the same time, positioning is performed through the diagonal circular holes of the mounting seat 203, which increases the accuracy and stability of positioning. At this time, the mounting seat 203 is driven to rise together under the action of the transmission mechanism 7, as shown in FIG. Figure 2 As shown, during the rising process, the rotating mechanism 6 drives the mounting seat 203 to rotate ninety degrees in the direction of the cylinder body 103, and then the mounting seats 203 at both ends are moved toward the position of the cylinder body 103 through the action of the docking mechanism 8, thereby ensuring that there is no welding deviation in the mounting holes of the two mounting seats 203. When moving to the cylinder body 103, the two mounting seats 203 are welded to the opposite surfaces through the welding equipment. When the welding is firm, they continue to move toward each other under the action of the docking mechanism 8. Under the action of the snap mechanism 4, the clamping rod 201 no longer restricts the mounting seat 203, and is reset through the action of the reverse pulling mechanism 3. At this time, it starts to move in the opposite direction under the action of the docking mechanism 8, so that the clamping rod 201 is separated from the mounting seat 203. When the device is separated from the mounting seat 203, the welding of the other surface of the mounting seat 203 is completed by the welding device, thereby achieving the purpose of accurately positioning and welding the mounting seat 203.

[0021] like Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, as a preferred embodiment of the present invention, the back-pull mechanism 3 includes two fixed cylinders 301 installed on the mounting table 101, and the inner wall of each fixed cylinder 301 is fixedly installed with a connecting cylinder 302, and the inner wall of the connecting cylinder 302 is slidably connected with a reverse thrust rod 303, and the surface of the reverse thrust rod 303 is fixedly installed with a tension spring 304, the clamping cylinder 202 is slidably connected to the inner wall of the fixed cylinder 301, the clamping cylinder 202 is slidably connected to the surface of the connecting cylinder 302, and the surface of the reverse thrust rod 303 is rotatably connected with a swing rod 305, and the end of the swing rod 305 away from the reverse thrust rod 303 is rotatably connected to the clamping rod 201, and the clamping rod 201 and the swing rod 305 are connected by a compression spring 306, and the end of the clamping rod 201 away from the swing rod 305 is rotatably connected to the surface of the connecting cylinder 302, the reverse thrust rod 303 is set to a cross shape, and the end away from the swing rod 305 is set to an arc surface.

[0022] In practical application, the embodiment of the present invention is as follows: Figure 7 As shown, when the pressing cylinder 202 is driven downward by the action of the transmission mechanism 7, the pressing cylinder 202 is pressed upward under the reaction of the mounting seat 203, as shown in FIG. Figure 6 and Figure 8 As shown, the upward movement of the pressing cylinder 202 pushes the reverse push rod 303 to move upward, and the tension spring 304 is stretched, as shown in FIG. Figure 7 As shown, the upward movement of the reverse thrust rod 303 drives the swing rod 305 to swing, and then drives the clamping rod 201 to swing. It should be noted here that during the upward movement of the reverse thrust rod 303, the connecting cylinder 302 always moves downward, and the clamping rod 201 and the swing rod 305 move away from the central axis of the reverse thrust rod 303 through relative movement. When the reverse thrust rod 303 moves to the buckle mechanism 4, the reverse thrust rod 303 is locked and limited by the buckle mechanism 4 at this time, so that when the clamping rod 201 rises subsequently under the action of the transmission mechanism 7, it works together with the clamping cylinder 202 to fix and limit the mounting seat 203.

[0023] like Fig. 9 and Fig.10 As shown, as another preferred embodiment of the present invention, the snap mechanism 4 includes two snap cylinders 403 installed on the mounting platform 101, and the inner wall of each snap cylinder 403 is penetrated by a snap rod 401 and is slidably connected to the snap rod 401, and the snap rod 401 is connected to the surface of the snap cylinder 403 through a snap spring 402, and the snap rod 401 is located inside the snap cylinder 403 and is set to be hemispherical.

[0024] In actual application of the embodiment of the present invention, when the reverse thrust rod 303 moves upward, Fig.10As shown, at this time, the arc surface of the reverse push rod 303 squeezes the hemispherical shape inside the snap rod 401, causing the snap rod 401 to move away from the central axis of the snap cylinder 403. When the reverse push rod 303 continues to move upward, the reverse push rod 303 is engaged into the inside of the snap cylinder 403, and the snap rod 401 limits the reverse push rod 303 under the action of the snap spring 402. When the welding of the two opposing surfaces of the two mounting seats 203 is completed later, the snap cylinders 403 on both sides continue to move relative to each other under the action of the docking mechanism 8, driving the snap rod 401 away from the central axis of the snap cylinder 403, and then the reverse push rod 303 is separated from the limiting effect of the snap rod 401 under the action of the tension spring 304, so that the device and the mounting seat 203 can be separated normally.

[0025] like Figure 4 As shown, as another preferred embodiment of the present invention, the device also includes a feedback mechanism 5, which includes a conical cylinder 501 installed on the mounting table 101, and a feedback spring 502 is fixedly installed on the surface of the conical cylinder 501. The surface of the conical cylinder 501 contacts two sliding rods 503, and the surface of each sliding rod 503 is rotatably connected to two linkage rods 504. The sliding rod 503 is slidably connected to the surface of the buckle cylinder 403, and each linkage rod 504 is connected to the buckle rod 401 at one end away from the sliding rod 503.

[0026] In actual application of the embodiment of the present invention, after the welding of the two opposite surfaces of the two mounting seats 203 is completed, the conical cylinders 501 at both ends are driven to continue to move toward each other under the action of the docking mechanism 8, such as Figure 4 As shown, from Figure 4 When viewed from the front, the conical cylinder 501 is squeezed by the cylinder body 103 and moves in the opposite direction to the buckle cylinder 403. At this time, the sliding rod 503 slides along the surface of the conical cylinder 501. When it moves to the inclined surface of the conical cylinder 501, the sliding rod 503 is driven to move to the left under the squeezing force of the inclined surface. The sliding rod 503 moves to the left and drives the buckle rod 401 away from the central axis of the buckle cylinder 403 through the swing of the linkage rod 504. At this time, the buckle rod 401 no longer limits the reverse push rod 303, so that the reverse push rod 303 is reset under the action of the tension spring 304, and then the clamping rod 201 is reset. At this time, the device is detached from the mounting seat 203 under the action of the docking mechanism 8, which is convenient for subsequent welding operations.

[0027] like Figure 1 and Figure 2As shown, as another preferred embodiment of the present invention, the rotating mechanism 6 includes a rotating table 601 installed on the mounting table 101, and two rotating gears 602 are fixedly installed on the surface of the rotating table 601, and each rotating gear 602 is meshed with a fixed rack 603. A snap cylinder 403 is fixedly installed on the surface of the rotating table 601, and a clamping cylinder 202 penetrates the interior of the rotating table 601 and is slidably connected to the clamping cylinder 202. The end of the tension spring 304 away from the reverse thrust rod 303 is connected to the surface of the rotating table 601, and a fixed cylinder 301 is fixedly installed on the surface of the rotating table 601. The end of the feedback spring 502 away from the conical cylinder 501 is connected to the surface of the rotating table 601.

[0028] In practical application, under the action of the transmission mechanism 7, the embodiment of the present invention is Figure 1 and Figure 2 As shown, from Figure 2 When viewed from the front direction, the rotating table 601 is driven to move upward. At this time, the rotating table 601 is driven to rotate clockwise through the meshing action of the gear rack. At this time, the mounting seat 203 rotates ninety degrees clockwise to face the cylinder body 103, and then the mounting seat 203 is docked with the cylinder body 103 through the action of the docking mechanism 8.

[0029] like Figure 1 As shown, as another preferred embodiment of the present invention, the transmission mechanism 7 includes two transmission motors 701 installed on the mounting platform 101, and a transmission screw 702 is fixedly installed at the output end of each transmission motor 701. The transmission screw 702 and the screw slider 703 form a spiral pair transmission, and the interior of the screw slider 703 is penetrated by a rotating gear 602 and is rotationally connected to the rotating gear 602.

[0030] In actual application of the embodiment of the present invention, when performing a grabbing operation of the mounting seat 203, as shown in FIG. Figure 1 As shown, at this time, the transmission motor 701 starts to run, and the operation of the transmission motor 701 drives the lead screw slider 703 to move downward through the spiral pair transmission. After the mounting seat 203 is fixed by the clamping rod 201 and the clamping cylinder 202, the transmission motor 701 runs in the reverse direction, driving the mounting seat 203 to rotate under the action of the rotating mechanism 6. After rotating ninety degrees, the transmission motor 701 stops running, thereby completing the grasping and positioning operation of the mounting seat 203.

[0031] like Figure 1As shown, as another preferred embodiment of the present invention, the docking mechanism 8 includes a docking screw 801 installed on the mounting table 101, the docking screw 801 and the main sliding plate 802 form a spiral pair transmission, the surface of the main sliding plate 802 is fixedly mounted with a transmission motor 701, the surface of the main sliding plate 802 is fixedly mounted with a fixed rack 603, and the interior of the main sliding plate 802 is penetrated by a transmission screw 702 and is rotatably connected to the transmission screw 702.

[0032] In actual application of the embodiment of the present invention, after the transmission mechanism 7 completes the grabbing and positioning operation of the mounting seat 203, the docking screw 801 starts to rotate under external drive, such as Figure 1 As shown, under the action of the spiral pair transmission, the two main sliding plates 802 are driven to move toward each other, so that the mounting seat 203 moves to the cylinder body 103 for positioning. After the welding is completed and the mounting seat 203 is separated from the limit, the docking screw 801 starts to move for reset, thereby facilitating subsequent welding operations.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient welding device for a hydraulic cylinder, characterized in that: The device comprises: The main frame (1) comprises a mounting platform (101) arranged on the main frame (1), a conveying platform (102) being fixedly mounted on the surface of the mounting platform (101), and a cylinder body (103) being placed on the surface of the mounting platform (101); The clamping mechanism (2) comprises a plurality of clamping rods (201) mounted on the mounting platform (101), and also comprises two clamping cylinders (202) mounted on the mounting platform (101). A plurality of mounting seats (203) are placed on the surface of the conveying platform (102), and a compression spring (204) is fixedly mounted on the surface of each clamping cylinder (202); Anti-pull mechanism (3): used to limit the mounting seat (203); The buckle mechanism (4) is used to cooperate with the reverse pulling mechanism (3) to fix and clamp the mounting seat (203); Rotating mechanism (6): used to drive the mounting seat (203) to rotate; Transmission mechanism (7): used to drive the mounting seat (203) to move in a vertical direction; Butt-jointing mechanism (8): used to drive the mounting seat (203) and the cylinder body (103) to be butt-jointed and welded; The reverse pulling mechanism (3) comprises two fixed cylinders (301) mounted on a mounting platform (101), a connecting cylinder (302) being fixedly mounted on the inner wall of each fixed cylinder (301), a reverse thrust rod (303) being slidably connected to the inner wall of the connecting cylinder (302), a tension spring (304) being fixedly mounted on the surface of the reverse thrust rod (303), a pressing cylinder (202) being slidably connected to the inner wall of the fixed cylinder (301), and a pressing cylinder (202) being slidably connected to the surface of the connecting cylinder (302). The surface of the reverse push rod (303) is rotatably connected to a swing rod (305), one end of the swing rod (305) away from the reverse push rod (303) is rotatably connected to the clamping rod (201), the clamping rod (201) and the swing rod (305) are connected via a compression spring (306), one end of the clamping rod (201) away from the swing rod (305) is rotatably connected to the surface of the connecting tube (302), the reverse push rod (303) is arranged in a cross shape, and one end away from the swing rod (305) is arranged in an arcuate surface.

2. The high-efficiency welding device for a hydraulic cylinder according to claim 1, characterized in that: The buckle mechanism (4) comprises two buckle cylinders (403) mounted on a mounting platform (101); a buckle rod (401) penetrates the inner wall of each buckle cylinder (403) and is slidably connected to the buckle rod (401); the buckle rod (401) is connected to the surface of the buckle cylinder (403) via a buckle spring (402); the buckle rod (401) is located inside the buckle cylinder (403) and is arranged in a hemispherical shape.

3. The high-efficiency welding device for a hydraulic cylinder according to claim 2, characterized in that: The device further comprises a feedback mechanism (5), the feedback mechanism (5) comprising a conical cylinder (501) mounted on a mounting platform (101), a feedback spring (502) being fixedly mounted on the surface of the conical cylinder (501), the surface of the conical cylinder (501) being in contact with two sliding rods (503), the surface of each sliding rod (503) being rotatably connected to two linkage rods (504), the sliding rods (503) being slidably connected to the surface of the buckle cylinder (403), and one end of each linkage rod (504) away from the sliding rod (503) being connected to the buckle rod (401).

4. The high-efficiency welding device for a hydraulic cylinder according to claim 3, characterized in that: The rotating mechanism (6) comprises a rotating table (601) mounted on a mounting platform (101); two rotating gears (602) are fixedly mounted on the surface of the rotating table (601); each rotating gear (602) is meshed with a fixed rack (603); a buckle cylinder (403) is fixedly mounted on the surface of the rotating table (601); a pressing cylinder (202) penetrates the interior of the rotating table (601) and is slidably connected to the pressing cylinder (202); an end of the tension spring (304) away from the reverse thrust rod (303) is connected to the surface of the rotating table (601); a fixed cylinder (301) is fixedly mounted on the surface of the rotating table (601); and an end of the feedback spring (502) away from the conical cylinder (501) is connected to the surface of the rotating table (601).

5. The high-efficiency welding device for a hydraulic cylinder according to claim 4, characterized in that: The transmission mechanism (7) comprises two transmission motors (701) mounted on a mounting platform (101), a transmission screw (702) being fixedly mounted on the output end of each transmission motor (701), the transmission screw (702) and a screw slider (703) forming a helical pair transmission, and a rotating gear (602) passing through the interior of the screw slider (703) and being rotationally connected to the rotating gear (602).

6. The high-efficiency welding device for a hydraulic cylinder according to claim 5, characterized in that: The docking mechanism (8) comprises a docking screw (801) mounted on a mounting platform (101), the docking screw (801) and a main sliding plate (802) forming a spiral pair transmission, a transmission motor (701) being fixedly mounted on the surface of the main sliding plate (802), a fixed rack (603) being fixedly mounted on the surface of the main sliding plate (802), and a transmission screw (702) penetrating the interior of the main sliding plate (802) and being rotationally connected to the transmission screw (702).

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