Parallel seam welding clamp for positioning and clamping tube shell

Abstract

The utility model relates to the technical field of tube shell clamps, in particular to a parallel seam welding clamp used for positioning and clamping a tube shell, which comprises a clamp bottom plate, a plurality of limiting grooves used for containing and limiting the tube shell and a rod body groove used for installing a pull rod in a sliding mode are arranged on the clamp bottom plate; the clamping assembly comprises a rod body fixing plate, a plurality of pull rods and a plurality of positioning parts, one ends of the pull rods are installed on the rod body fixing plate, the pull rods are installed on the clamp bottom plate in a sliding mode, the positioning parts are installed on the pull rods, and the pull rods and the rod body fixing plate move synchronously so that the positioning parts can press the pipe shells in the limiting grooves. The method is used for solving the technical problems that in the prior art, when parallel seam welding is carried out on a tube shell and a cover plate, the welding airtightness is lowered, and the product yield is lowered due to the fact that the cover plate tilts up.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipe shell clamp technical field especially a parallel seam welding clamp for positioning and clamping pipe shell. BACKGROUND

[0002] The description in this section is provided only for the purpose of summarizing the disclosure and not for the purpose of constraining the prior art.

[0003] With the rapid development of society, the fine requirement of electronic products is higher and higher. With the traditional plastic package being difficult to meet the reliability requirement, the parallel seam welding packaging process method realizes the airtight packaging between the pipe shell and the cover plate through welding, that is, the periphery of the pipe shell and the cover plate is welded through resistance welding, and the parallel seam welding packaging process method is applied more and more widely.

[0004] A multi-station parallel seam welding pipe shell fixing device is disclosed in the prior art, and the invention patent with the publication number CN115283918B discloses a body, a pressing mechanism and an upper pressing cover. The body is provided with a plurality of installation stations, and each installation station is provided with a containing groove for inserting a pin on the opposite sides. The pressing mechanism includes a first pressing part and a second pressing part. When the pipe shell is in a fixed state, the first pressing part presses the upper part of the pin on one side of the pipe shell. The upper pressing cover is provided with a plurality of station grooves corresponding to the installation stations. The station grooves penetrate the upper and lower surfaces of the upper pressing cover for exposing the pipe shell. The fixing device further includes a locking member for locking the upper pressing cover on the body and limiting the movement of the upper pressing cover. The fixing device has the advantages of reducing damage to the pipe shell and ensuring the welding sealing effect. However, the related technology including the above technical solution still has many problems, such as: when the parallel seam welding is used to weld the pipe shell and the cover plate, the cover plate and the pipe shell will be warped when the welding wheel contacts the end of the cover plate for welding, which will cause the welding airtightness to decrease and the product yield to decrease. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a parallel seam welding clamp for positioning and clamping pipe shell, which solves the technical problems of decreasing welding airtightness and product yield caused by the warping of the cover plate during parallel seam welding of the pipe shell and the cover plate in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A parallel seam welding clamp for positioning and clamping pipe shell, comprising:

[0008] A clamp base plate is provided on the clamp base plate a plurality of limiting grooves for accommodating and limiting the pipe shell and a rod body groove for sliding installation of a pull rod;

[0009] The clamping assembly comprises a rod body fixing plate, a plurality of pull rods installed at one end of the rod body fixing plate and slidingly installed on the clamp base plate, and a plurality of positioning portions installed on the pull rods, wherein the pull rods move synchronously with the rod body fixing plate to realize the compression of the positioning portions on the pipe shell in the limiting groove.

[0010] Further, one end of the pull rod is fixedly installed opposite to the rod body fixing plate, and the other end is installed with a blocking portion. An elastic member is sleeved on the pull rod, one end of the elastic member abuts against the blocking portion, and the other end abuts against the clamp base plate.

[0011] Further, a limiting rod is rotatably installed on the rod body fixing plate, a clamping portion is installed on the limiting rod, and an insertion slot is arranged on the clamp base plate for the clamping portion to be inserted. When the rod body fixing plate moves in the direction of approaching the clamp base plate under the restoring force of the elastic member, the clamping portion is inserted into the insertion slot of the clamp base plate, and at this time, the positioning portion compresses the pipe shell. When a force is applied to the limiting rod to move it in the direction away from the clamp base plate, the clamping portion is separated from the insertion slot, and at the same time, the limiting rod is rotated, at this time, the clamping portion is not aligned with the insertion slot, and further, the positioning portion is away from the pipe shell and loses the compression on it.

[0012] Further, an end linear bearing is installed on one end of the pull rod close to the rod body fixing plate, and a tail linear bearing is installed on the other end of the pull rod away from the rod body fixing plate. The end linear bearing is in interference fit with the front end bearing hole of the rod body groove, and the tail linear bearing is in interference fit with the tail end bearing hole of the rod body groove. The elastic member is abutted between the tail linear bearing and the blocking portion.

[0013] Further, the limiting groove is arranged as a rectangular recess with one end partially open. One corner of the limiting groove away from the opening is a limiting corner, and the two faces constituting the corner are a horizontal limiting face and a vertical limiting face, respectively. The horizontal limiting face and the vertical limiting face limit the two faces of the pipe shell, respectively.

[0014] Further, the positioning portion adopts an L-shaped spring piece, which is composed of a positioning piece and a limiting piece with an included angle and is integrally formed. The spring piece is installed on the pull rod through the positioning piece, and when the limiting piece compresses the pipe shell, it abuts against the opposite corner away from the limiting corner.

[0015] Further, a bending portion is arranged on the free end of the limiting piece, and the bending direction of the bending portion is away from the side of the pipe shell.

[0016] Further, the clamp base plate is installed on a workbench, at least one sliding table is arranged on the bottom of the clamp base plate, a sliding groove is arranged on the workbench in sliding fit with the sliding table, and the clamp base plate is fixedly installed opposite to the workbench.

[0017] Further, the jig bottom plate bottom is provided with a positioning hole, a clamping part matched with the positioning hole is installed on the workbench to press the jig bottom plate, and a positioning block is installed on the side of the jig bottom plate away from the positioning hole to limit the side of the jig bottom plate away from the positioning hole.

[0018] Further, the clamping part is provided as an L-shaped elastic sheet, one end of the clamping part is a fixed end installed on the workbench, and the other end is provided with a bent edge inclined to the fixed end, and the shape of the positioning hole is matched with the shape of the clamping part.

[0019] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0020] (1). The utility model discloses a jig bottom plate is positioned to the pipe shell, and the positioning part of the clamping assembly is combined to press the pipe shell, so that the accurate positioning of the pipe shell is realized, and the situation that the pipe shell and the cover plate are lifted at one end due to stress is avoided when parallel seam welding is carried out, so that the air tightness of parallel seam welding of the pipe shell and the cover plate is improved.

[0021] (2). The utility model discloses a linear bearing and a tail linear bearing between the pull rod and the rod body fixing plate, which realize the reciprocating stable sliding of the pull rod, realize the automatic reset of the pull rod through the elastic element, realize the accurate positioning of the pipe shell through the limiting groove, realize the accurate positioning of the pipe shell through the cooperation of the positioning part, realize the relative fixation between the jig bottom plate and the workbench through the positioning hole of the jig bottom plate and the clamping part matched with the positioning hole, and the jig bottom plate and the workbench are convenient to disassemble and assemble. ACCURACY

[0022] Figure 1 It is a perspective structure schematic view of the utility model;

[0023] Figure 2 It is a perspective structure schematic view of the utility model;

[0024] Figure 3 It is a perspective structure schematic view of the utility model;

[0025] Figure 4 It is a perspective structure schematic view of the utility model;

[0026] Figure 5 It is a perspective structure schematic view of the utility model;

[0027] Figure 6 It is a perspective structure schematic view of the utility model;

[0028] Figure 7 It is a perspective structure schematic view of the utility model;

[0029] Figure 8 It is a perspective structure schematic view of the utility model; Figure 7A local enlarged structure schematic view at the middle A.

[0030] 100, workbench; 200, clamp base plate; 201, tail end bearing hole; 202, positioning hole; 203, limiting groove; 2031, longitudinal limiting surface; 2032, transverse limiting surface; 204, rod body groove; 205, front end bearing hole; 300, cover plate; 401, limiting rod; 403, clamping portion; 404, rod body fixing plate; 405, adjusting rod; 407, pull rod; 408, end linear bearing; 409, tail linear bearing; 410, elastic member; 411, blocking portion; 500, positioning portion; 501, positioning sheet; 502, limiting sheet; 503, bending portion; 600, positioning block; 700, clamping portion. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] The accompanying drawings are only used for illustrative description and cannot be understood as a limitation to the patent;

[0033] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0034] The following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0035] In the description of the present application, it should be understood that the terms "first", "second", "third" and the like are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] Further, in the description of the present application, unless otherwise specified, "a plurality of" refers to two or more. The association relationship of "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship. The utility model will be further described below in combination with the drawings and embodiments.

[0037] In order to solve the limitations of the prior art, the embodiment provides a technical scheme, and the technical scheme of the utility model will be further described below in combination with the drawings and embodiments.

[0038] The utility model discloses to the parallel seam welding operation of shell and cover plate 300 in prior art, because the position of shell and cover plate 300 far from the force point is easy to occur the phenomenon of warping due to the force of welding spot, and the phenomenon of warping is very easy to cause the poor welding air tightness, and the problem of reducing the yield of welding, therefore, the utility model optimizes and improves the fixture positioning structure of shell when carrying out parallel seam welding.

[0039] Referring to the drawings Figures 1-4 And the drawings Figures 7-8 A parallel seam welding fixture for positioning and clamping the shell, comprising: a fixture base plate 200, a plurality of limiting grooves 203 for accommodating and limiting the shell are arranged on the fixture base plate 200, and a rod body groove 204 for sliding installation of the pull rod 407, it can be understood here that the limiting groove 203 is used for limiting the shell, and the rod body groove 204 is used for reciprocating sliding installation of the pull rod 407, the specific structure of the limiting groove 203 is that the limiting groove 203 is arranged as a long rectangular groove with one end partially open, one corner of the limiting groove 203 far from the opening is a limiting corner, and the two faces constituting the corner are a horizontal limiting face 2032 and a vertical limiting face 2031 respectively, the horizontal limiting face 2032 and the vertical limiting face 2031 limit the two faces of the shell respectively, and the fixture base plate 200 is provided with a plurality of limiting grooves 203, and the limiting grooves 203 are arranged in parallel on the fixture base plate 200. Figure 4It can be understood that part of the opening of the limiting groove 203 is to avoid the positioning part 500, and the purpose of the limiting angle of the limiting groove 203 is to fully and accurately position the pipe shell, because as long as the machining accuracy of the limiting angle is ensured, the end away from the limiting angle is tightly positioned by the positioning part 500, so that the accurate positioning of all pipe shells can be ensured. The transverse limiting surface 2032 and the longitudinal limiting surface 2031 are perpendicular to each other in machining to facilitate accurate positioning of the pipe shell, and the inner corners of the limiting groove 203 are provided with avoiding grooves for avoiding the corners of the pipe shell, so as to reduce the machining difficulty caused by accurate positioning of the pipe shell. The accurate positioning of the pipe shell is realized by surface positioning; the clamping assembly includes a rod body fixing plate 404, a plurality of pull rods 407 installed at one end of the rod body fixing plate 404 and slidingly installed on the clamp bottom plate 200, and a plurality of positioning parts 500 installed on the pull rods 407. The pull rod 407 moves synchronously with the rod body fixing plate 404 to realize the tight pressing of the positioning part 500 to the pipe shell in the limiting groove 203. It can be understood that the rod body fixing plate 404 is a flat plate, the number of pull rods 407 in the drawing is seven, and any other number can also be used. The pull rod 407 is vertically installed with the rod body fixing plate 404 and is detachably connected by screws, so that the pull rod 407 moves synchronously with the rod body fixing plate 404, and the positioning part 500 is detachably installed on the pull rod 407 by screws. Therefore, when the pull rod 407 moves, the positioning part 500 moves, thereby realizing the tight positioning of the pipe shell by the positioning part 500.

[0040] Referring to the accompanying Figure 1 and 2, one end of the pull rod 407 is fixedly installed opposite to the rod body fixing plate 404, and the other end is installed with the blocking part 411, which can adopt a disc or other structure and is fixedly installed at the tail end of the pull rod 407 through a nut, the pull rod 407 is sleeved with the elastic element 410, one end of the elastic element 410 abuts against the blocking part 411, and the other end abuts against the clamp bottom plate 200, and the elastic element 410 adopts a spring. The limiting rod 401 is rotatably installed on the rod body fixing plate 404, the limiting rod 401 is installed on the rod body fixing plate 404 through a nut, the limiting rod 401 is installed with the clamping part 403, the clamping part 403 adopts a horizontal rod perpendicular to the axis of the limiting rod 401, the clamp bottom plate 200 is provided with the insertion slot for the clamping part 403, the shape of the insertion slot is consistent with that of the clamping part 403 and the size of the insertion slot is greater than that of the clamping part 403, when the rod body fixing plate 404 moves in the direction of approaching the clamp bottom plate 200 under the restoring force of the elastic element 410, the clamping part 403 is aligned and inserted into the insertion slot of the clamp bottom plate 200, at this time, the positioning part 500 abuts against the pipe shell, when the limiting rod 401 is forced to move away from the clamp bottom plate 200, the clamping part 403 is separated from the insertion slot, and the limiting rod 401 is rotated at this time, the clamping part 403 is not aligned with the insertion slot, and then the positioning part 500 is away from the pipe shell and loses the abutment, at this time, the elastic element 410 is in a compressed state. The end portion linear bearing 408 is installed at one end of the pull rod 407 close to the rod body fixing plate 404, the tail portion linear bearing 409 is installed at the other end of the pull rod 407 away from the rod body fixing plate 404, the end portion linear bearing 408 is in interference fit with the front end bearing hole 205 of the rod body groove 204, the tail portion linear bearing 409 is in interference fit with the tail end bearing hole 201 of the rod body groove 204, the elastic element 410 abuts between the tail portion linear bearing 409 and the blocking part 411, by adopting the end portion linear bearing 408 and the tail portion linear bearing 409, the straightness of the reciprocating sliding operation of the pull rod 407 can be ensured, and then the stability of the operation of the pull rod 407 can be ensured. In addition, two adjusting rods 405 are also installed on the rod body fixing plate 404, the two adjusting rods 405 are located on the two sides of the limiting rod 401, one end of the adjusting rod 405 penetrates through the installation on the rod body fixing plate 404, and the other end is threadedly installed on the clamp bottom plate 200, the purpose of arranging the adjusting rod 405 is that the maximum distance between the rod body fixing plate 404 and the clamp bottom plate 200 can be adjusted through the adjusting rod 405, so that the relative position of the positioning part 500 and the limiting groove 203 can be adjusted.

[0041] adopted Figure 5 and 6The positioning part 500 adopts an L-shaped spring, which is composed of an integrally formed positioning piece 501 and a limiting piece 502 with an included angle. The spring is mounted on the pull rod 407 through the positioning piece 501. The positioning piece 501 has an elongated hole, and a screw passes through the hole to mount it on the pull rod 407. The installation position of the positioning piece 501 can be adjusted by changing the position of the screw in the elongated hole, thus making it suitable for positioning tubes of different lengths. When the limiting piece 502 presses against the tube, it is diagonally aligned with the part away from the limiting angle. A bent part 503 is provided at the free end of the limiting piece 502. The bending direction of the bent part 503 is away from the tube. The purpose of the bent part 503 is to prevent scratches caused by the positioning part 500 pressing against the tube. Simultaneously, a rubber or silicone pad can be installed on the side of the limiting piece 502 facing the tube to protect the appearance of the tube when it is pressed, ensuring the quality of the tube's appearance.

[0042] See appendix Figure 1 Appendix Figure 3 and attached Figure 4 The fixture base plate 200 is mounted on the worktable 100. At least one slide is provided at the bottom of the fixture base plate 200. A sliding groove is provided on the worktable 100 to slide along the slide. It can be understood that the slide is an isosceles trapezoid, and the shape of the sliding groove matches it. The fixture base plate 200 and the worktable 100 are fixedly installed relative to each other. This relative fixed installation facilitates the positioning of the fixture base plate 200 for parallel seam welding operations. A positioning hole 202 is provided at the bottom of the fixture base plate 200. A snap-fit ​​part 700 is installed on the worktable 100, which engages with the positioning hole 202 to press the bottom of the fixture. A positioning block 600 is installed on the side of the fixture base plate 200 away from the positioning hole 202. This positioning block 600 is used to limit the movement of the side of the fixture base plate 200 away from the positioning hole 202. The snap-fit ​​part 700 is configured as an L-shaped spring piece, and one end of the snap-fit ​​part 700 is a fixed end installed on the worktable 100, and the other end is provided with a bent edge inclined towards its fixed end. The shape of the positioning hole 202 matches the shape of the snap-fit ​​part 700. It can be understood that the fixed end of the snap-fit ​​part 700 is installed on the worktable 100, and its free end is elastic. When the worktable 100 and the fixture base plate 200 are installed, and it is necessary to limit the fixture base plate 200, the fixed end of the snap-fit ​​part 700 is installed on the worktable 100, and the other end is snapped into the positioning hole 202 of the fixture base plate 200. Since the shape of the positioning hole 202 matches the shape of the snap-fit ​​part 700, the fixture base plate 200 can be positioned better.

[0043] When the tube shell is positioned by the utility model, the rod body fixing plate 404 is first forced to move away from the direction of the clamp base plate 200, at which time the clamping part 403 is separated from the clamping groove of the clamp base plate 200, then the limiting rod 401 is rotated, at which time the clamping part 403 is tightly pressed against the side of the clamp base plate 200, the pull rod 407 slides along the rod body groove 204, the positioning part 500 is driven to move away from the limiting groove 203, the tube shell is placed in the limiting groove 203, then the limiting rod 401 is rotated, under the reset force of the elastic member 410, the rod body fixing plate 404 moves along the direction of approaching the clamp base plate 200, the clamping part 403 enters the clamping groove, at which time the positioning part 500 moves synchronously with the pull rod 407 and the rod body fixing plate 404, the positioning part 500 contacts and compresses the tube shell, under the action of the positioning part 500, the tube shell is tightly pressed against the limiting angle of the limiting groove 203, thereby the positioning of the tube shell is completed.

[0044] The above description of disclosed embodiments enables those skilled in the art to carry out or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0045] The above description is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A parallel seam welding fixture for positioning and clamping a tube shell, characterized by, The utility model relates to a pipe clamping device, including: A clamping base plate (200) is provided with a plurality of limiting grooves (203) for accommodating and limiting the pipe shell and a rod groove (204) for slidingly installing a pull rod (407); A clamping assembly includes a rod fixing plate (404), a plurality of pull rods (407) slidably installed on the clamping base plate (200) and mounted at one end on the rod fixing plate (404), and a plurality of positioning parts (500) mounted on the pull rods (407), the pull rods (407) move synchronously with the rod fixing plate (404) to realize the compression of the positioning parts (500) on the pipe shell in the limiting grooves (203).

2. A parallel seam welding fixture for positioning and clamping a tube shell as defined in claim 1, wherein One end of the pull rod (407) is fixedly installed opposite to the rod fixing plate (404), and the other end is installed with a blocking part (411), the pull rod (407) is sleeved with an elastic member (410), one end of the elastic member (410) abuts against the blocking part (411), and the other end abuts against the clamping base plate (200).

3. A parallel seam welding fixture for positioning and clamping a tube shell as defined in claim 2, wherein A limiting rod (401) is rotatably installed on the rod fixing plate (404), the limiting rod (401) is installed with a clamping part (403), and the clamping base plate (200) is provided with a slot for inserting the clamping part (403).

4. A parallel seam welding fixture for positioning and clamping a tube shell as defined in claim 3, wherein The end of the pull rod (407) close to the rod fixing plate (404) is installed with an end linear bearing (408), and the end away from the rod fixing plate (404) is installed with a tail linear bearing (409), the end linear bearing (408) is interference-fitted with a front bearing hole (205) of the rod groove (204), the tail linear bearing (409) is interference-fitted with a tail end bearing hole (201) of the rod groove (204), and the elastic member (410) is abutted between the tail linear bearing (409) and the blocking part (411).

5. A parallel seam welding fixture for positioning and clamping a tube shell according to any one of claims 1-4, characterized in that, The limiting groove (203) is provided as a rectangular recess with one end partially open, one corner of the limiting groove (203) away from the opening is a limiting corner, and two faces constituting the corner are a horizontal limiting face (2032) and a vertical limiting face (2031), respectively, the horizontal limiting face (2032) and the vertical limiting face (2031) limit two faces of the pipe shell, respectively.

6. A parallel seam welding fixture for positioning and clamping a tube shell as defined in claim 5, wherein The positioning part (500) adopts an L-shaped elastic sheet, the elastic sheet is composed of a positioning sheet (501) and a limiting sheet (502) which are integrally formed and have an included angle, the elastic sheet is installed on the pull rod (407) through the positioning sheet (501), and the limiting sheet (502) is abutted against the opposite corner of the limiting corner away from the pipe shell when compressing the pipe shell.

7. A parallel seam welding fixture for positioning and clamping a tube shell as defined in claim 6, wherein The free end of the limiting sheet (502) is provided with a bending part (503), and the bending direction of the bending part (503) is away from the side of the pipe shell.

8. A parallel seam welding fixture for positioning and clamping a tube shell according to claim 7, characterized in that The clamping base plate (200) is installed on a workbench (100), at least one sliding table is arranged at the bottom of the clamping base plate (200), a sliding groove is arranged on the workbench (100) and slidably matched with the sliding table, and the clamping base plate (200) is fixedly installed opposite to the workbench (100).

9. A parallel seam welding fixture for positioning and clamping a tube shell as defined in claim 8, wherein, The bottom of the clamp base plate (200) is provided with a positioning hole (202), the workbench (100) is provided with a clamping part (700) which is matched with the positioning hole (202) and is used for pressing the clamp base plate (200), and a positioning block (600) is arranged on the side of the clamp base plate (200) which is away from the positioning hole (202) and is used for limiting the side of the clamp base plate (200) which is away from the positioning hole (202).

10. A parallel seam welding fixture for positioning and clamping a tube shell as defined in claim 9, wherein, The clamping part (700) is provided as an L-shaped elastic sheet, one end of the clamping part (700) is a fixed end which is arranged on the workbench (100), and the other end is provided with a bent edge which is inclined to the fixed end, and the shape of the positioning hole (202) is matched with the shape of the clamping part (700).

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