Stable clamp for handrail welding machining

Abstract

The invention discloses a stable clamp for handrail welding machining, and relates to the field of handrail welding machining. An auxiliary positioning rubber part is mounted at the upper end of a reserved base, and a handrail workpiece to be machined is placed on the inner side of the auxiliary positioning rubber part; the inner side of the reserved base is rotationally connected with a movable butt joint piece, and the surface of the reserved base is fixedly connected with a fixed supporting plate. According to the stable clamp for handrail welding machining, in the welding work process, after a workpiece needing to be machined is placed between the auxiliary positioning rubber parts, the movable butt joint parts can be rotated by 90 degrees, so that the auxiliary positioning suction cup assemblies on the outer sides of the movable butt joint parts make contact with the outer side of the workpiece, and self-adaptive positioning treatment is conducted; a traditional bolt type mounting and positioning mechanism is not needed, the positioning stability is high, stable self-adaptive locking treatment is effectively carried out on a contacted workpiece, the dismounting link after positioning is more convenient, and the welding precision is effectively guaranteed in the follow-up welding work process.

Description

Technical Field

[0001] The invention relates to the technical field of handrail welding processing, in particular to a stable clamp used for handrail welding processing. Background Art

[0002] Barrier-free handrails are assistive devices designed for the elderly and disabled. Handrails made of stainless steel or alloy materials require welding during processing, and the welding process requires auxiliary positioning of the workpiece in contact, which is then handled using a welding fixture. For example, the patent with publication number CN117548957A discloses a handrail vertical bracket sheet metal welding fixture, which includes a fixture base with a left clamping portion and a right clamping portion arranged opposite each other on the left and right sides. The left clamping portion is used to clamp and position the first left handrail vertical bracket sheet metal and the second left handrail vertical bracket sheet metal, while the right clamping portion is used to clamp and position the first right handrail vertical bracket sheet metal and the second right handrail vertical bracket sheet metal. This fixture can effectively clamp and position the first left handrail vertical bracket sheet metal, the second left handrail vertical bracket sheet metal, the first right handrail vertical bracket sheet metal, and the second right handrail vertical bracket sheet metal, meeting the clamping requirements of automated welding and improving welding efficiency and quality. Another example is the patent with publication number CN118809051A, which discloses a welding fixture for metal armrests of chairs. The fixture comprises a support platform, the bottom surface of which is fixedly connected to a plurality of support columns, the upper surface of which is fixedly provided with a clamping seat with a concave cross-section, and an arc-shaped support seat fixedly installed in the clamping seat; two symmetrical clamping assemblies are installed on the clamping seat, each of which comprises a bending rod slidably connected to the clamping seat, and one end of each bending rod is fixedly connected to a clamping plate, and the side surface of the clamping plate away from the bending rod is fixedly connected to a rubber pad. After clamping, the workpiece can be effectively prevented from moving. When the metal armrest is subsequently welded, the welding position will not deviate, the welding quality of the metal armrest is high, and the clamping effect of the metal armrest is good. For example, the patent publication number CN207479904U discloses a welding fixture for metal armrests of a chair, which includes a frame, a main drive mechanism, a connecting mechanism, a lower die, an ejector drive mechanism, an ejector, and an upper die. The upper die with a die cavity and a limit block and the lower die form a clamping structure that can wrap around the metal armrest of the chair, thereby ensuring that the metal armrest can be fully clamped while not deforming due to force. Furthermore, the lower die is provided with a retractable ejector. When clamped, the ejector descends to expose the welding position, thereby ensuring that the welding position is not affected by the fixture. Furthermore, the present invention arranges the cylinder of the main drive mechanism at the bottom of the frame, thereby reducing the overall height of the present invention and facilitating its placement. Most of the above-mentioned existing technologies have improved their overall structure, and the existing handrail welding processing fixtures mostly use bolt-type installation and positioning mechanisms, which are cumbersome to operate, and their positioning stability is limited. They cannot effectively perform stable adaptive locking processing on the contacting workpieces. The disassembly process after positioning requires multiple steps of operation, and thus there are certain limitations in use. Summary of the Invention

[0003] The purpose of the present invention is to provide a stable fixture for handrail welding processing, so as to solve the problem that the above-mentioned background technology mostly adopts a bolt-type installation and positioning mechanism, which is cumbersome to operate, has limited positioning stability, cannot effectively perform stable adaptive locking processing on the contacting workpiece, and requires multiple steps of operation in the disassembly link after positioning.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a stable fixture for handrail welding processing, comprising a reserved base, an auxiliary positioning rubber part is installed on the upper end of the reserved base, and the handrail workpiece to be processed is placed on the inner side of the auxiliary positioning rubber part; the inner side of the reserved base is rotatably connected to a movable docking part, the surface of the reserved base is fixedly connected to a fixed support plate, the interior of the movable docking part is penetrated by a resistance contact part, and the resistance contact part corresponds to the inner position of the fixed support plate, the outer side of the movable docking part is provided with an auxiliary positioning suction cup assembly, and the inner side of the movable docking part is provided with an adaptive positioning structure, and the outer side of the contacting workpiece is adaptively auxiliary positioned by the adaptive positioning part structure.

[0005] Further preferably, the adaptive positioning structure is provided with a first liquid capsule, and the first liquid capsule is adhesively connected to the inside of the movable docking piece, the outer position of the first liquid capsule is docked with the inner side of the interfering contact piece, and a supply hose is provided on the inner side of the first liquid capsule, and the supply hose passes through the inner side of the movable docking piece.

[0006] Further preferably, a second liquid bag is adhesively connected to the inner side of the edge of the movable docking piece, and the lower end of the second liquid bag is docked with the auxiliary positioning suction cup assembly, and the second liquid bag is connected to the end of the supply hose, and the inner side of the auxiliary positioning suction cup assembly is nested and docked with a built-in reserved piston.

[0007] Further preferably, the movable docking piece forms a 90° rotating structure along the upper end of the reserved base, and the resisting contact piece on the outside of the movable docking piece is synchronously pressed inward when it rotates to contact with the fixed support plate, and the resisting contact piece synchronously applies pressure to the first liquid bag in contact, and the movable docking piece is rotated 90° so that the auxiliary positioning suction cup assembly on its outside contacts the outside of the workpiece for adaptive positioning processing, without the need for a traditional bolt-type installation and positioning mechanism, easy operation, and high positioning stability, which effectively performs stable adaptive locking processing on the contacted workpiece.

[0008] Further preferably, when the first liquid bag is pressurized, it supplies liquid to the interior of the second liquid bag at the end through the supply hose, and during the expansion of the second liquid bag, it pushes the auxiliary positioning suction cup assembly at the lower end to move downward along the inner side of the movable docking piece.

[0009] Further preferably, an auxiliary adsorption structure is provided on the inner side of the auxiliary positioning suction cup assembly, and the outer side of the contacted workpiece is secondary positioned by the auxiliary adsorption structure. The auxiliary adsorption structure is provided with a built-in reserved cavity, and the built-in reserved cavity is opened on the inner side of the auxiliary positioning suction cup assembly, and the built-in reserved cavity and the built-in reserved piston position are docked with each other, and a transverse docking piece is nested and installed on the inner side of the upper end of the movable docking piece, and the outer side of the transverse docking piece corresponds to the inner position of the fixed support plate.

[0010] Further preferably, a return spring is fixedly connected to the outer side of the transverse docking piece, and a reserved steel wire rope is docked to the outer side of the transverse docking piece, and the reserved steel wire rope passes through the inner side of the movable docking piece, and the end of the reserved steel wire rope is docked with the upper end of the built-in reserved piston.

[0011] Further preferably, the outer side of the transverse docking member moves inward along the inner side of the movable docking member as the movable docking member rotates and contacts the inner side of the fixed support plate, and the outer side of the transverse docking member forms an elastic support through a reset spring.

[0012] Further preferably, in the process of the transverse docking piece moving inward along the inner side of the movable docking piece, the built-in reserved piston at the end is driven to move upward along the inner side of the auxiliary positioning suction cup assembly through the reserved steel wire rope, and the outer side of the built-in reserved piston forms a fitting docking state along the inner side of the built-in reserved cavity. In the process of the transverse docking piece moving inward along the inner side of the movable docking piece, the reserved steel wire rope will be used for traction, thereby driving the built-in reserved piston at the end to move upward along the inner side of the auxiliary positioning suction cup assembly, and then cooperating with the auxiliary positioning suction cup assembly to perform internal negative pressure suction.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The stable fixture for handrail welding is provided with an adaptive positioning structure, which performs adaptive auxiliary positioning on the outer side of the contacted workpiece through the adaptive positioning member structure. During the welding process, it is only necessary to place the workpiece to be processed between the auxiliary positioning rubber members, and then the movable docking member can be rotated 90 degrees to make the auxiliary positioning suction cup assembly on the outer side contact the outer side of the workpiece for adaptive positioning processing. There is no need for a traditional bolt-type installation and positioning mechanism, the operation is convenient, and the positioning is highly stable. It effectively performs stable adaptive locking processing on the contacted workpiece, and the disassembly link after positioning is more convenient, so that the welding accuracy can be effectively guaranteed during the subsequent welding process. Furthermore, when the abutting contact piece on the outside of the movable docking piece moves to contact the fixed support plate, the abutting contact piece will be pressurized and move inward, thereby simultaneously applying pressure to the first liquid bag on the inside, and the pressurized first liquid bag will then supply the liquid to the inside of the second liquid bag at the end through the supply hose. By expanding the second liquid bag and moving it downward, the auxiliary positioning suction cup assembly at the lower end moves downward along the inner side of the movable docking piece, thereby performing adaptive adsorption and positioning processing on the outer side of the contacted workpiece, thereby improving the practicality of the device.

[0014] Furthermore, an auxiliary adsorption structure is provided, through which the outer side of the contacting workpiece is subjected to secondary positioning processing. During the rotation of the movable docking part, the transverse docking part at the upper end of its outer side will synchronously contact the contacting fixed support plate, allowing the transverse docking part to move synchronously along the inner side of the movable docking part. During the inward movement of the transverse docking part along the inner side of the movable docking part, it will be pulled by the reserved steel wire rope, thereby driving the built-in reserved piston at the end to move upward along the inner side of the auxiliary positioning suction cup assembly, and then cooperate with the auxiliary positioning suction cup assembly to perform internal negative pressure suction, so that the auxiliary positioning suction cup assembly in the positioning state can improve its positioning stability, thereby effectively ensuring its positioning strength during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of the base reserved for the present invention; Figure 3 This is a schematic diagram of a half-section three-dimensional structure of a movable docking piece of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the supply hose of the present invention; Figure 5 For the present invention Figure 3 Schematic diagram of the partially enlarged structure; Figure 6 A schematic diagram of the three-dimensional structure of the steel wire rope is reserved for the present invention; Figure 7This is a schematic diagram of the three-dimensional structure of the transverse docking member of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the built-in reserved piston of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the fixed support plate of the present invention.

[0016] In the figure: 1. Reserved base; 2. Auxiliary positioning rubber part; 3. Movable docking part; 4. Fixed support plate; 5. Interference contact part; 6. First liquid bag; 7. Supply hose; 8. Second liquid bag; 9. Auxiliary positioning suction cup assembly; 10. Built-in reserved piston; 11. Built-in reserved cavity; 12. Horizontal docking part; 13. Return spring; 14. Reserved wire rope. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figures 1-9 The present invention provides the following technical solutions: a stable fixture for handrail welding processing, which solves the problem that most bolt-type installation and positioning mechanisms are cumbersome to operate and have limited positioning stability. The fixture discloses an auxiliary positioning rubber part 2 installed on the upper end of a reserved base 1, and the handrail workpiece to be processed is placed on the inner side of the auxiliary positioning rubber part 2; a movable docking part 3 is rotatably connected to the inner side of the reserved base 1, and a fixed support plate 4 is fixedly connected to the surface of the reserved base 1, and a resistance contact part 5 is connected to the inside of the movable docking part 3, and the resistance contact part 5 corresponds to the inner position of the fixed support plate 4. An auxiliary positioning suction cup assembly 9 is provided on the outer side of the movable docking part 3, and an adaptive positioning structure is provided on the inner side of the movable docking part 3, and the adaptive positioning part structure is used to adaptively assist in positioning the outer side of the contacted workpiece.

[0019] The adaptive positioning structure is provided with a first liquid capsule 6, and the first liquid capsule 6 is bonded to the inside of the movable docking member 3, the outer position of the first liquid capsule 6 is connected to the inner side of the contact member 5, and the inner side of the first liquid capsule 6 is provided with a supply hose 7, and the supply hose 7 passes through the inner side of the movable docking member 3, and the inner side of the side end of the movable docking member 3 is bonded with a second liquid capsule 8, and the lower end of the second liquid capsule 8 is connected to the auxiliary positioning suction cup assembly 9, and the second liquid capsule 8 is connected to the end of the supply hose 7, and the auxiliary positioning suction cup assembly 9 is nested and docked with a built-in reserved piston 10, and the movable docking piece 3 forms a 90° rotation structure along the upper end of the reserved base 1, and the resisting contact piece 5 on the outside of the movable docking piece 3 is rotated to contact with the fixed support plate 4 and is synchronously pressed inward, and the resisting contact piece 5 simultaneously applies pressure to the first liquid capsule 6 in contact, and when the first liquid capsule 6 is pressurized, it supplies the work to the inside of the second liquid capsule 8 at the end through the supply hose 7, and the second liquid capsule 8 expands during the process of pushing the auxiliary positioning suction cup assembly 9 at the lower end along the inner side of the movable docking piece 3 to The movable docking part 3 is movable downward. During the welding process, it is only necessary to place the workpiece to be processed between the auxiliary positioning rubber parts 2, and then the movable docking part 3 can be rotated 90 degrees so that the auxiliary positioning suction cup assembly 9 on its outside contacts the outside of the workpiece for adaptive positioning processing. There is no need to use a traditional bolt-type installation and positioning mechanism. The operation is convenient, and its positioning stability is high. It effectively performs a stable adaptive locking processing on the contacted workpiece. The disassembly link after positioning is more convenient, so that the welding accuracy can be effectively guaranteed during the subsequent welding process. When the resistance contact piece 5 on the outside of the movable docking part 3 moves to contact the fixed support plate 4, the resistance contact piece 5 will be pressed inward and then synchronously pressurize the first liquid capsule 6 on the inside, and the pressurized first liquid capsule 6 will then be supplied to the inside of the second liquid capsule 8 at the end through the supply hose 7. The auxiliary positioning suction cup assembly 9 at the lower end is pushed downward by the expansion of the second liquid capsule 8, thereby adaptively adsorbing and positioning the outside of the contacted workpiece.

[0020] Example 2: Based on Example 1, in order to solve the problem that the contacted workpiece cannot be effectively and stably adaptively locked, and the disassembly process after positioning requires multiple steps, an auxiliary adsorption structure is also disclosed. Its specific structure is as follows: The inner side of the auxiliary positioning suction cup assembly 9 is provided with an auxiliary adsorption structure, which performs secondary positioning processing on the outer side of the workpiece in contact with the auxiliary adsorption structure; The auxiliary adsorption structure is provided with a built-in reserved cavity 11, and the built-in reserved cavity 11 is opened on the inner side of the auxiliary positioning suction cup assembly 9, and the built-in reserved cavity 11 and the built-in reserved piston 10 are docked with each other, and a transverse docking piece 12 is nested and installed on the inner side of the upper end of the movable docking piece 3, and the outer side of the transverse docking piece 12 corresponds to the inner position of the fixed support plate 4, and the outer side of the transverse docking piece 12 is fixedly connected with a return spring 13, and the outer side of the transverse docking piece 12 is docked with a reserved steel wire rope 14, and the reserved steel wire rope 14 passes through the inner side of the movable docking piece 3, and the end of the reserved steel wire rope 14 is docked with the upper end of the built-in reserved piston 10, and the outer side of the transverse docking piece 12 moves inward along the inner side of the movable docking piece 3 when it moves to contact with the inner side of the fixed support plate 4, and the outer side of the transverse docking piece 12 is elastically supported by the return spring 13, and the transverse docking piece 12 moves along the movable docking piece 3. When the movable docking part 3 rotates, the transverse docking part 12 at its outer upper end will synchronously contact the fixed support plate 4 in contact, allowing the transverse docking part 12 to move synchronously along the inner side of the movable docking part 3, and the transverse docking part 12 will be pulled by the reserved steel wire rope 14 during the inward movement of the inner side of the movable docking part 3, thereby driving the built-in reserved piston 10 at the end to move upward along the inner side of the auxiliary positioning suction cup assembly 9, and then cooperate with the auxiliary positioning suction cup assembly 9 to perform internal negative pressure suction, so that the auxiliary positioning suction cup assembly 9 in the positioning state can improve its positioning stability, thereby effectively ensuring its positioning strength during the welding process.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stable fixture for handrail welding processing, comprising a reserved base (1), an auxiliary positioning rubber part (2) being installed on the upper end of the reserved base (1), and a handrail workpiece to be processed is placed inside the auxiliary positioning rubber part (2); Its characteristics are: The inner side of the reserved base (1) is rotatably connected to a movable docking piece (3), the surface of the reserved base (1) is fixedly connected to a fixed support plate (4), the interior of the movable docking piece (3) is penetrated by a resisting contact piece (5), and the resisting contact piece (5) corresponds to the inner side of the fixed support plate (4), the outer side of the movable docking piece (3) is provided with an auxiliary positioning suction cup assembly (9), and the inner side of the movable docking piece (3) is provided with an adaptive positioning structure, and the outer side of the contacting workpiece is adaptively auxiliary positioned by the adaptive positioning piece structure.

2. A stable fixture for handrail welding according to claim 1, characterized in that: The adaptive positioning structure is provided with a first liquid capsule (6), and the first liquid capsule (6) is bonded to the inside of the movable docking member (3), the outer side of the first liquid capsule (6) is docked with the inner side of the abutting contact member (5), and a supply hose (7) is provided on the inner side of the first liquid capsule (6), and the supply hose (7) passes through the inner side of the movable docking member (3).

3. A stable fixture for handrail welding according to claim 2, characterized in that: The inner side of the edge of the movable docking member (3) is bonded with a second liquid capsule (8), and the lower end of the second liquid capsule (8) is docked with the auxiliary positioning suction cup assembly (9), and the second liquid capsule (8) is connected to the end of the supply hose (7), and the inner side of the auxiliary positioning suction cup assembly (9) is nested and docked with a built-in reserved piston (10).

4. A stable fixture for handrail welding according to claim 3, characterized in that: The movable docking member (3) forms a 90° rotating structure along the upper end of the reserved base (1), and the resisting contact member (5) on the outer side of the movable docking member (3) is simultaneously pressed and moved inward when it rotates to contact the fixed support plate (4), and the resisting contact member (5) simultaneously applies pressure to the first liquid capsule (6) in contact.

5. A stable fixture for handrail welding according to claim 4, characterized in that: When the first liquid capsule (6) is pressurized, it supplies liquid to the interior of the second liquid capsule (8) at the end through the supply hose (7), and during the expansion of the second liquid capsule (8), it pushes the auxiliary positioning suction cup assembly (9) at the lower end to move downward along the inner side of the movable docking piece (3).

6. The stable fixture for handrail welding according to claim 3, characterized in that: An auxiliary adsorption structure is provided on the inner side of the auxiliary positioning suction cup assembly (9), and secondary positioning processing is performed on the outer side of the workpiece in contact with the auxiliary adsorption structure; The auxiliary adsorption structure is provided with a built-in reserved cavity (11), and the built-in reserved cavity (11) is opened on the inner side of the auxiliary positioning suction cup assembly (9), and the built-in reserved cavity (11) and the built-in reserved piston (10) are docked with each other, and a transverse docking member (12) is nested and installed on the inner side of the upper end of the movable docking member (3), and the outer side of the transverse docking member (12) corresponds to the inner side of the fixed support plate (4).

7. A stable fixture for handrail welding according to claim 6, characterized in that: The outer side of the transverse docking member (12) is fixedly connected to a return spring (13), and the outer side of the transverse docking member (12) is docked with a reserved steel wire rope (14), and the reserved steel wire rope (14) passes through the inner side of the movable docking member (3), and the end of the reserved steel wire rope (14) is docked with the upper end of the built-in reserved piston (10).

8. The stable fixture for handrail welding according to claim 7, characterized in that: The outer side of the transverse docking member (12) moves inward along the inner side of the movable docking member (3) as the movable docking member (3) rotates and contacts the inner side of the fixed support plate (4), and the outer side of the transverse docking member (12) forms an elastic support work through the return spring (13).

9. The stable fixture for handrail welding according to claim 8, characterized in that: During the process of the transverse docking member (12) moving inward along the inner side of the movable docking member (3), the built-in reserved piston (10) at the end is driven by the reserved steel wire rope (14) to move upward along the inner side of the auxiliary positioning suction cup assembly (9), and the outer side of the built-in reserved piston (10) forms a fitting docking state along the inner side of the built-in reserved cavity (11).

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