A welding fixture for special-shaped workpieces

Abstract

The utility model provides a welding fixture for special-shaped workpieces, including a fixture table, the upper end of which is provided with a horizontally arranged rectangular driving groove; including a motor, a rectangular nut block and a cylindrical positioning side block, the motor is fixedly installed on the left end surface inside the rectangular driving groove, the right end of the motor output shaft is fixedly connected with a horizontally arranged screw rod, the other end of the screw rod is rotatably connected with the right end surface inside the rectangular driving groove, the rectangular nut block is threadedly sleeved on the screw rod, the upper end surface of the rectangular nut block is fixedly installed with a first clamping block, and the first clamping block is located above the fixture table, and two cylindrical positioning side blocks are provided, both of which are located on the right side of the first clamping block, and are symmetrically arranged on the front and rear sides of the first clamping block. The utility model can realize multi-point clamping and fixing of special-shaped workpieces, thereby improving the fixing effect of the special-shaped workpieces and having better stability.

Description

Technical Field

[0001] The utility model relates to the field of clamps, in particular to a welding clamp for special-shaped workpieces. Background Art

[0002] Welding, also known as fusion or melting, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials such as plastics. Welding is achieved through three methods: fusion welding, pressure welding and brazing. During the welding process, fixtures are needed to fix the workpiece.

[0003] The existing clamping tooling places the workpiece between two clamping plates and clamps the special-shaped workpiece by adjusting the distance between the clamping plates. Since the shapes of various parts of the special-shaped workpiece are different, the clamping plates can only clamp the two end points of the special-shaped workpiece when clamping, and cannot clamp stably, which is inconvenient.

[0004] In summary, the present application now proposes a special-shaped workpiece welding fixture to solve the above-mentioned problems. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a welding fixture for special-shaped workpieces to solve the problems raised in the above background technology.

[0006] Based on the above purpose, the utility model provides a special-shaped workpiece welding fixture, including a fixture table, the upper end of the fixture table is provided with a horizontally arranged rectangular driving groove;

[0007] It includes a motor, a rectangular nut block and a cylindrical positioning side block. The motor is fixedly installed on the left end surface of the rectangular driving groove. The right end of the motor output shaft is fixedly connected to a horizontally arranged screw rod. The other end of the screw rod is rotatably connected to the right end surface of the rectangular driving groove. The rectangular nut block is threadedly mounted on the screw rod. A first clamping block is fixedly installed on the upper end surface of the rectangular nut block, and the first clamping block is located above the clamping table. Two cylindrical positioning side blocks are provided, and the two cylindrical positioning side blocks are both located on the right side of the first clamping block and are symmetrically arranged on the front and rear sides of the first clamping block.

[0008] Preferably, the side end surface of the rectangular nut block is slidably fitted with the inner wall of the rectangular driving groove in a horizontal direction.

[0009] More preferably, it further comprises a positioning mechanism, wherein the positioning mechanism is installed on the upper end surface of the fixture table.

[0010] Preferably, the positioning mechanism includes a positioning shell and a second clamping block. The positioning shell is installed on the upper end of the fixture table and is located on the right side of the cylindrical positioning side block. The left end and the lower end surface of the positioning shell are both open. The right end of the second clamping block slides through the opening at the left end of the positioning shell and extends to the interior of the positioning shell. The second clamping block is located directly to the right of the first clamping block.

[0011] More preferably, the positioning mechanism further comprises a reset push rod and a reset cylinder, the left end of the reset push rod is fixedly connected to the right end surface of the second clamping block, the right end of the reset cylinder is fixedly connected to the right end surface inside the positioning shell, a reset spring is fixedly installed on the right end surface inside the reset cylinder, and the other end of the reset spring is fixedly connected to the right end of the reset push rod;

[0012] The right end of the reset push rod passes through the left end of the reset cylinder and extends to the inside of the reset cylinder.

[0013] Preferably, the side end surface of the reset push rod is slidably fitted with the inner wall of the reset cylinder in the horizontal direction.

[0014] More preferably, the positioning mechanism also includes a strip-shaped positioning through hole and a guide connecting block, the strip-shaped positioning through hole is opened at the upper end of the positioning shell, and the strip-shaped positioning through hole is arranged in a horizontal direction, the guide connecting block is fixedly installed on the upper end surface of the second clamping block, the upper end of the guide connecting block passes through the strip-shaped positioning through hole, and is fixedly connected with a positioning plate, and the positioning plate is detachably fixedly connected to the upper end surface of the positioning shell by a top screw.

[0015] Preferably, the side end surface of the guide connection block is slidably fitted with the inner side wall of the strip-shaped positioning through hole in a horizontal direction.

[0016] From the above, it can be seen that the beneficial effects of the utility model are:

[0017] 1. For this type of special-shaped workpiece welding fixture, when the positioning mechanism is installed on the fixture table, before welding, the special-shaped workpiece can be placed on the upper end of the fixture table, and the two cylindrical positioning side blocks are made close to the right end of the special-shaped workpiece, and then the motor is started. The motor can drive the screw to rotate, and the rotating screw can drive the rectangular nut block to move right, and then drive the first clamping block to move right. The first clamping block that moves right can clamp the special-shaped workpiece and fix it on the two cylindrical positioning side blocks, thereby realizing three-end clamping of the special-shaped workpiece, thereby improving the stability of clamping the special-shaped workpiece.

[0018] 2. For this type of special-shaped workpiece welding fixture, after the positioning mechanism is installed on the fixture table, the right end of the special-shaped workpiece can be placed against the left end of the second clamping block. When the first clamping block moves to the right to fix the special-shaped workpiece on the cylindrical positioning side block, the right end of the special-shaped workpiece will squeeze the second clamping block. At this time, the reset push rod moves to the right to squeeze the reset spring, and the reset spring undergoes elastic deformation. At this time, the second clamping block will drive the positioning plate to move to the right through the guide connecting block. When the first clamping block moves to the maximum stroke, that is, after the special-shaped workpiece is fixed on the two cylindrical positioning side blocks, the shell tightens the top screw to fix the positioning plate, and then the second clamping block can be fixed, so that the second clamping block can support the right end of the special-shaped workpiece, thereby realizing that the first clamping block, the second clamping block and the two cylindrical positioning side blocks can stably clamp and fix the four end points of the special-shaped workpiece.

[0019] The utility model can realize multi-point clamping and fixing of special-shaped workpieces, thereby improving the fixing effect of the special-shaped workpieces and achieving better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the positioning mechanism in the utility model;

[0023] Figure 3 It is a schematic diagram of the upward side structure of the positioning mechanism in the utility model;

[0024] Figure 4 It is an exploded view of the local structure of the positioning mechanism in the utility model.

[0025] In the accompanying drawings: 1. fixture table; 2. motor; 3. screw rod; 4. first clamping block; 5. rectangular driving slot; 6. cylindrical positioning side block; 7. positioning mechanism;

[0026] 701. Positioning shell; 702. Second clamping block; 703. Top screw; 704. Positioning plate; 705. Strip-shaped positioning through hole; 706. Reset cylinder; 707. Reset ejector rod; 708. Guide connecting block; 709. Reset spring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the utility model should be the common meanings understood by people with ordinary skills in the field to which the disclosure belongs. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Example 1

[0030] See also Figure 1 A welding fixture for a special-shaped workpiece includes a fixture table 1, and a horizontally arranged rectangular driving groove 5 is opened at the upper end of the fixture table 1;

[0031] It includes a motor 2, a rectangular nut block and a cylindrical positioning side block 6. The motor 2 is fixedly installed on the left end surface of the rectangular driving groove 5. The right end of the output shaft of the motor 2 is fixedly connected to a horizontally arranged screw rod 3. The other end of the screw rod 3 is rotatably connected to the right end surface of the rectangular driving groove 5. The rectangular nut block is threadedly mounted on the screw rod 3. The upper end surface of the rectangular nut block is fixedly installed with a first clamping block 4, and the first clamping block 4 is located above the clamping table 1. Two cylindrical positioning side blocks 6 are provided. The two cylindrical positioning side blocks 6 are both located on the right side of the first clamping block 4 and are symmetrically arranged on the front and rear sides of the first clamping block 4.

[0032] Before welding, the special-shaped workpiece can be placed on the upper end of the clamp table 1, and the two cylindrical positioning side blocks 6 are made close to the right end of the special-shaped workpiece, and then the motor 2 is started. The motor 2 can drive the screw rod 3 to rotate, and the rotating screw rod 3 can drive the rectangular nut block to move right, and then drive the first clamping block 4 to move right. The first clamping block 4 that moves right can clamp the special-shaped workpiece and fix it on the two cylindrical positioning side blocks 6, thereby realizing three-end clamping of the special-shaped workpiece, thereby improving the stability of clamping the special-shaped workpiece.

[0033] As an improved solution of the above solution, the side end surface of the rectangular nut block is slidably fitted with the inner wall of the rectangular driving groove 5 in the horizontal direction.

[0034] Through the above design, the stability of the rectangular nut block in horizontal movement in the rectangular driving groove 5 can be improved.

[0035] As an improved solution of the above solution, it further includes a positioning mechanism 7 , which is installed on the upper end surface of the fixture table 1 .

[0036] Example 2

[0037] Reference Figure 1-4 , a special-shaped workpiece welding fixture, compared with embodiment 1, this embodiment also includes a positioning mechanism 7, the positioning mechanism 7 includes a positioning shell 701 and a second clamping block 702, the positioning shell 701 is installed at the upper end of the fixture table 1, and is located on the right side of the cylindrical positioning side block 6, the left end and the lower end surface of the positioning shell 701 are both open, the right end of the second clamping block 702 slides through the open part of the left end of the positioning shell 701, and extends to the inside of the positioning shell 701, and the second clamping block 702 is located on the right side of the first clamping block 4; the positioning mechanism 7 also includes a reset push rod 707 and a reset cylinder 706, the left end of the reset push rod 707 is fixedly connected to the right end surface of the second clamping block 702, the right end of the reset cylinder 706 is fixedly connected to the right end surface inside the positioning shell 701, and a reset spring 709 is fixedly installed on the right end surface inside the reset cylinder 706, and the other end of the reset spring 709 is fixedly connected to the The right end of the reset push rod 707 is fixedly connected; the right end of the reset push rod 707 passes through the left end of the reset cylinder 706 and extends to the inside of the reset cylinder 706; the side end face of the reset push rod 707 slides and fits with the inner wall of the reset cylinder 706 in the horizontal direction; the positioning mechanism 7 also includes a strip positioning through hole 705 and a guide connecting block 708, the strip positioning through hole 705 is opened at the upper end of the positioning shell 701, and the strip positioning through hole 705 is arranged in the horizontal direction, the guide connecting block 708 is fixedly installed on the upper end face of the second clamping block 702, the upper end of the guide connecting block 708 passes through the strip positioning through hole 705, and is fixedly connected with a positioning plate 704, and the positioning plate 704 is detachably fixedly connected to the upper end face of the positioning shell 701 through a top screw 703; the side end face of the guide connecting block 708 slides and fits with the inner wall of the strip positioning through hole 705 in the horizontal direction.

[0038] Working process: the right end of the special-shaped workpiece can be placed against the left end of the second clamping block 702. When the first clamping block 4 moves to the right to fix the special-shaped workpiece on the cylindrical positioning side block 6, the right end of the special-shaped workpiece will squeeze the second clamping block 702. At this time, the reset push rod 707 moves to the right to squeeze the reset spring 709, and the reset spring 709 undergoes elastic deformation. At this time, the second clamping block 702 will drive the positioning plate 704 to move to the right through the guide connecting block 708. When the first clamping block 4 moves to the maximum stroke, that is, after the special-shaped workpiece is fixed on the two cylindrical positioning side blocks 6, the shell tightens the top screw 703, and then the positioning plate 704 can be fixed, and then the second clamping block 702 can be fixed, so that the second clamping block 702 can support the right end of the special-shaped workpiece, thereby realizing that the first clamping block 4, the second clamping block 702 and the two cylindrical positioning side blocks 6 can stably clamp and fix the four end points of the special-shaped workpiece;

[0039] When the use is completed and the special-shaped workpiece is disassembled, the reset spring 709 recovers its deformation, thereby driving the reset push rod 707 and the second clamping block 702 to reset, so as to facilitate quick use next time.

[0040] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In accordance with the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0041] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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 welding fixture for a special-shaped workpiece, comprising: A fixture table (1), wherein a horizontally arranged rectangular driving groove (5) is provided at the upper end of the fixture table (1); The invention is characterized by comprising: A motor (2), the motor (2) being fixedly mounted on the left end surface inside the rectangular drive slot (5), the right end of the output shaft of the motor (2) being fixedly connected to a horizontally arranged screw rod (3), the other end of the screw rod (3) being rotatably connected to the right end surface inside the rectangular drive slot (5); A rectangular nut block, wherein the rectangular nut block is threadably mounted on the screw rod (3), a first clamping block (4) is fixedly mounted on the upper end surface of the rectangular nut block, and the first clamping block (4) is located above the clamping table (1); and A cylindrical positioning side block (6), wherein two cylindrical positioning side blocks (6) are provided, and the two cylindrical positioning side blocks (6) are both located on the right side of the first clamping block (4) and are symmetrically arranged on the front and rear sides of the first clamping block (4).

2. A welding fixture for special-shaped workpieces according to claim 1, characterized in that: The side end surface of the rectangular nut block is slidably fitted with the inner wall of the rectangular driving groove (5) in the horizontal direction.

3. A welding fixture for special-shaped workpieces according to claim 2, characterized in that: Also includes: A positioning mechanism (7), wherein the positioning mechanism (7) is mounted on an upper end surface of the fixture table (1).

4. A welding fixture for special-shaped workpieces according to claim 3, characterized in that: The positioning mechanism (7) comprises: A positioning shell (701), the positioning shell (701) being installed at the upper end of the fixture table (1) and located on the right side of the cylindrical positioning side block (6), and the left end and the lower end surface of the positioning shell (701) are both open; and The second clamping block (702) has a right end that slides through the left end opening of the positioning shell (701) and extends into the interior of the positioning shell (701). The second clamping block (702) is located directly to the right of the first clamping block (4).

5. A welding fixture for special-shaped workpieces according to claim 4, characterized in that: The positioning mechanism (7) further comprises: A reset push rod (707) and a reset cylinder (706), wherein the left end of the reset push rod (707) is fixedly connected to the right end surface of the second clamping block (702), and the right end of the reset cylinder (706) is fixedly connected to the right end surface inside the positioning shell (701). A reset spring (709) is fixedly installed on the right end surface inside the reset cylinder (706), and the other end of the reset spring (709) is fixedly connected to the right end of the reset push rod (707); The right end of the reset push rod (707) passes through the left end of the reset cylinder (706) and extends into the interior of the reset cylinder (706).

6. A welding fixture for special-shaped workpieces according to claim 5, characterized in that: The side end surface of the reset push rod (707) is slidably fitted with the inner wall of the reset cylinder (706) in the horizontal direction.

7. A welding fixture for special-shaped workpieces according to claim 6, characterized in that: The positioning mechanism (7) further comprises: A strip-shaped positioning through hole (705), wherein the strip-shaped positioning through hole (705) is opened at the upper end of the positioning shell (701), and the strip-shaped positioning through hole (705) is arranged along the horizontal direction; and A guide connection block (708) is fixedly mounted on the upper end surface of the second clamping block (702); the upper end of the guide connection block (708) passes through the strip-shaped positioning through hole (705) and is fixedly connected to a positioning plate (704); and the positioning plate (704) is detachably fixedly connected to the upper end surface of the positioning shell (701) via a top screw (703).

8. The welding fixture for special-shaped workpieces according to claim 7, characterized in that: The side end surface of the guide connection block (708) is slidably fitted with the inner wall of the strip-shaped positioning through hole (705) in the horizontal direction.

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