Linkage multi-station welding tooling

Abstract

The present invention discloses a linkage type multi-station welding fixture, which is characterized by comprising a base, a bottom plate and a lifting type positioning and demoulding frame; the bottom plate is mounted on the base and has a positioning station protruding from the upper surface of the bottom plate and for loading a workpiece; the lifting type positioning and demoulding frame comprises a base plate, a pressure plate and a lifting drive component; the base plate is arranged on the upper surface of the base plate and can move up and down relative to the base plate; one side of the pressure plate is hinged to the side of the base plate, and the other side is a free side, and a locking structure is provided between the free side and the base plate to lock the free side to the base plate; the lifting drive component is arranged between the base and the base plate to drive the base plate and the pressure plate to move up and down, and after moving downward, the pressure plate presses the workpiece on the positioning station, and after rising, the base plate drives the workpiece out of the positioning station. The present invention can significantly improve the convenience and efficiency of workpiece welding.

Description

Technical Field

[0001] The present invention relates to the field of welding tooling, in particular to a linkage type multi-station welding tooling. Background Art

[0002] With the development of society, sofas with adjustable functions have become increasingly common in people's daily lives. These adjustable sofas are equipped with an internal mechanical support frame, also known as a functional iron frame. This mechanical support frame generally includes a footrest mechanism, a seat mechanism, and a backrest mechanism. A series of mechanical linkages between the three mechanisms adjust the relative positions and angles of the footrest, seat, and backrest, enabling switching between sitting, relaxing, and fully reclining positions.

[0003] like Figure 6 The figure shows a workpiece 4 used in the headrest of the backrest mechanism for the spring in the headrest to be hung. It needs to be welded and then assembled into the headrest. When welding this workpiece in the prior art, the pin rod 42 is inserted into the plate body 41, and then both are inserted into the corresponding positioning fixture for positioning, that is, the plate body is inserted into the positioning pin of the positioning fixture through the hole position, and the pin rod is inserted into the positioning hole of the positioning plate in the positioning fixture, and then the welding operation is performed; after the welding is completed, the operator manually removes the workpiece from the positioning fixture. When removing, due to the clamping force between the plate body and the positioning pin of the positioning fixture, it increases the difficulty for the operator to manually remove the workpiece from the positioning fixture, so further improvement is needed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a linkage type multi-station welding tool, which can significantly improve the convenience and efficiency of workpiece welding.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A linkage type multi-station welding tool, characterized by comprising a base, a bottom plate and a lifting positioning and demoulding frame;

[0007] The bottom plate is mounted on the base and has a positioning station protruding from the upper surface of the bottom plate for loading the workpiece;

[0008] The lifting positioning and demoulding frame includes a base plate, a pressing plate and a lifting drive component;

[0009] The base plate is arranged on the upper surface of the bottom plate and can move up and down relative to the bottom plate;

[0010] One side of the pressure plate is hinged to the side of the base plate, and the other side is a free side. A locking structure for locking the free side to the base plate is provided between the free side and the base plate.

[0011] The lifting drive component is arranged between the base and the base plate to drive the base plate and the pressing plate to move up and down. After moving downward, the pressing plate presses the workpiece on the positioning station. After rising, the base plate drives the workpiece to leave the positioning station.

[0012] Preferably, there are a plurality of positioning stations, and each positioning station is formed by a positioning pin inserted into the base plate and a positioning hole opened on the base plate.

[0013] Preferably, the base plate is provided with a guide rod, and the bottom plate is provided with a guide sleeve for cooperation with the guide rod.

[0014] Preferably, the locking structure includes a first locking sleeve, a second locking sleeve and a locking rod;

[0015] The first locking sleeve is fixed on the base plate, and the second locking sleeve is fixed on the free side of the pressure plate. When the free side is rotated downward, the first locking sleeve and the second locking sleeve can be docked.

[0016] The locking rod is slidably engaged in the first locking sleeve and can simultaneously slide into the second locking sleeve that is docked with the first locking sleeve.

[0017] Preferably, the first locking sleeve and the second locking sleeve are provided in two groups, the two ends of the locking rod are respectively fitted in the two first locking sleeves, and the middle portion of the locking rod is bent outwards.

[0018] The advantages of the present invention are: through the lifting positioning and demoulding frame, multiple workpieces can be pressed and positioned on the positioning station, and multiple workpieces can be driven to leave the positioning station at the same time, with the characteristics of operation detection and high welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the linkage type multi-station welding tool provided in this embodiment;

[0020] Figure 2 A schematic diagram of the pressing plate provided in this embodiment pressing against a workpiece;

[0021] Figure 3 A schematic diagram of the demoulding process of a workpiece provided in this embodiment;

[0022] Figure 4 This is a schematic diagram of the workpiece after demoulding provided in this embodiment;

[0023] Figure 5 A schematic diagram of the coordination of the workpiece provided in this embodiment at the positioning station;

[0024] Figure 6 A schematic diagram of the workpiece. DETAILED DESCRIPTION

[0025] Combine Figures 1 to 6The linked multi-station welding tool of the present invention is further described.

[0026] A linkage type multi-station welding fixture is characterized by comprising a base 1, a bottom plate 5 and a lifting type positioning and demolding frame 2. The bottom plate 5 is mounted on the base 1 and has a positioning station protruding from the upper surface of the bottom plate 5 and for loading the workpiece 4. The lifting type positioning and demolding frame 2 comprises a base plate 22, a pressure plate 21 and a lifting drive component; the base plate 22 is arranged on the upper surface of the bottom plate 5 and can move up and down relative to the base plate 5; one side of the pressure plate 21 is hinged to the side of the base plate 22, and the other side is a free side 212 that can rotate, and a locking structure 23 is provided between the free side 212 and the base plate 22 to lock the free side 212 to the base plate 22. The lifting drive component is arranged between the base 1 and the base plate 22 to drive the base plate 22 and the pressure plate 21 to move up and down. After moving downward, the pressure plate 21 presses the workpiece 4 on the positioning station. After rising, the base plate 22 drives the workpiece 4 out of the positioning station.

[0027] Specifically, the base 1 comprises a bottom frame 11 formed by four tubes connected end to end, a plurality of plates 13 arranged within the bottom frame, and a plurality of positioning plates 12 fixed to both the bottom frame and the plates 13. The positioning plates 12 have openings on their undersides for the tubes to pass through, and the undersides of the positioning plates 12 and the plates 13 are plugged into each other. The tops of the positioning plates 12 have protruding engaging portions, which are slotted into the base plate 22, allowing the engaging portions to be secured to the base plate 22 in a horizontal position.

[0028] There are multiple positioning stations, arranged along the length of the base plate 5, to facilitate the simultaneous welding of multiple workpieces. Each positioning station is formed by two positioning pins 6 inserted into the base plate 5 and a positioning hole provided therein. The actual number of positioning pins 6 and positioning holes can be adjusted based on actual needs. The positioning pins 6 include a support portion 61 fixed to the base plate 5 and used to support the workpiece 4, and a positioning portion 62 located at the upper end of the support portion 61 and having a smaller diameter than the support portion 61, allowing it to be inserted into the hole in the workpiece 4.

[0029] A guide rod extending downward is provided at the edge of the base plate 22 , and a guide sleeve for the guide rod to cooperate with is provided on the bottom plate 5 .

[0030] One side of the pressure plate 21, i.e., the first side, is hingedly connected to the first side of the base plate 22 via a hinge 3. The second side of the pressure plate 21 is a free side 212, which is rotatable relative to the second side of the bottom plate 5. The locking structure 23 includes a first locking sleeve 231, a second locking sleeve 232, and a locking rod 233. The first locking sleeve 231 is welded and fixed to the second side of the base plate 22, and the second locking sleeve 232 is welded and fixed to the free side 212 of the pressure plate 21. When the free side 212 is rotated downward to a position parallel to the pressure plate 21 and the base plate 22, the first locking sleeve 231 and the second locking sleeve 232 are docked. The locking rod 233 slides into the first locking sleeve 231 and can simultaneously slide into the second locking sleeve 232 docked with the first locking sleeve 231, thereby locking the first and second locking sleeves 231, 232, and preventing the pressure plate 21 from turning over.

[0031] The first locking sleeve 231 and the second locking sleeve 232 are provided in two sets to enhance locking stability. The two ends 2331 of the locking rod 233 fit into the two first locking sleeves 231, respectively, with the middle portion of the locking rod 233 bent outward. The specific number of first locking sleeves 231 and second locking sleeves 232 can be set according to actual conditions.

[0032] The lifting drive component is a cylinder, the cylinder body of the cylinder is fixed to the plate body 13 through a fixing plate, and the piston rod of the cylinder passes through the bottom plate 5 and is connected to the base plate 22, thereby driving the base plate 22 and the pressure plate 21 to move up and down.

[0033] A relief opening 211 is provided at a position of the pressing plate 21 corresponding to the positioning pin 6 for facilitating welding and observation.

[0034] During specific use, the base plate 22 is moved to the bottom of the positioning portion 62 by the cylinder, the pressing plate 21 is above the positioning portion 62, and the free side 212 of the pressing plate 21 is in an open state; the workpieces 4 are placed one by one on the positioning station by a robot or manually; after the placement is completed, the pressing plate 21 is turned over so that the pressing plate 21 is parallel to the base plate 22, and the first locking sleeve 231 and the second locking sleeve 232 are docked; the locking rod 233 is moved so that the end of the locking rod 233 is simultaneously located in the first locking sleeve 231 and the second locking sleeve 232, and the free side of the pressing plate 21 is opened. 212 is locked on the base plate 22; the cylinder drives the base plate 22 and the pressure plate 21 to move downward synchronously, so that the lower surface of the pressure plate 21 is pressed against the upper surface of the workpiece 4, pressing the workpiece 4; the welding operation is performed; after the welding is completed, the cylinder drives the base plate 22 to move upward to the top of the positioning portion 62, and during the upward movement of the base plate 22, the workpiece 4 is driven out of the positioning position; finally, the sliding locking rod 233 turns the free side 212 of the pressure plate 21 upward, and the welded workpiece 4 can be taken away; this cycle of welding operation is sufficient, and it has the characteristics of convenient operation and high welding efficiency.

[0035] Unless otherwise specified, in the present invention, if there are terms such as "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationships, they are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationships in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, they can understand the specific meanings of the above terms in conjunction with the accompanying drawings and according to specific circumstances.

[0036] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this disclosure should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A linkage type multi-station welding tool, characterized by: It includes a base, a bottom plate and a lifting positioning demoulding frame; The bottom plate is mounted on the base and has a positioning station protruding from the upper surface of the bottom plate for loading the workpiece; The lifting positioning and demoulding frame includes a base plate, a pressing plate and a lifting driving component; The base plate is arranged on the upper surface of the bottom plate and can move up and down relative to the bottom plate; One side of the pressure plate is hinged to the side of the base plate, and the other side is a free side. A locking structure for locking the free side to the base plate is provided between the free side and the base plate. The lifting drive component is arranged between the base and the base plate to drive the base plate and the pressure plate to move up and down. After moving down, the pressure plate presses the workpiece on the positioning station. After rising, the base plate drives the workpiece to leave the positioning station. The locking structure includes a first locking sleeve, a second locking sleeve and a locking rod; The first locking sleeve is fixed on the base plate, and the second locking sleeve is fixed on the free side of the pressure plate. When the free side is rotated downward, the first locking sleeve and the second locking sleeve can be docked. The locking rod is slidably engaged in the first locking sleeve and can simultaneously slide into the second locking sleeve docked with the first locking sleeve; One side of the pressure plate, i.e., the first side, is hinged to the first side of the base plate through a hinge, and the second side of the pressure plate is a free side capable of rotating relative to the second side of the base plate; The lifting drive component is a cylinder, the cylinder body of the cylinder is fixed on the plate body through a fixing plate, and the piston rod of the cylinder passes through the bottom plate and is connected to the base plate, thereby driving the base plate and the pressure plate to move up and down.

2. The linkage type multi-station welding tool according to claim 1 is characterized in that: There are a plurality of positioning stations, and each positioning station is formed by a positioning pin inserted into the bottom plate and a positioning hole opened on the bottom plate.

3. The linkage type multi-station welding tool according to claim 1 is characterized in that: The base plate is provided with a guide rod, and the bottom plate is provided with a guide sleeve for matching with the guide rod.

4. The linkage type multi-station welding tool according to claim 1 is characterized in that: There are two sets of the first locking sleeves and the second locking sleeves. Both ends of the locking rod are respectively fitted in the two first locking sleeves, and the middle portion of the locking rod is bent outward.

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