Fixture for friction stir welding of energy storage cavity

Abstract

The utility model discloses a fixture for friction stir welding of an energy storage cavity, which relates to the technical field of welding fixtures and comprises a base for bearing two workpieces to be welded and a pre-positioning component arranged on the base. The supporting table is provided with a lower channel allowing one side of a to-be-welded workpiece to penetrate through, and the supporting table is further provided with an upper lifting face used for bearing the other side of the to-be-welded workpiece. The two workpieces to be welded can be pre-positioned on the base through the supporting table, the openings of the two workpieces to be welded can be supported through the supporting table due to the fact that the two workpieces to be welded are each in a U-shaped opening shape, and meanwhile the supporting table can be locked on the base through the locking piece. The two workpieces to be welded are locked on the base, namely, the two workpieces to be welded are locked on the base, then the eccentric support is driven to rotate until the eccentric support abuts against the base, and locking between the supporting table and the base can be more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a fixture for energy storage cavity friction stir welding. Background Art

[0002] With the rapid development of the new energy industry and the gradual strengthening of environmental protection awareness, the development and stabilization of energy forms have become the focus of industrial development, and energy storage technology has become an indispensable key link. Especially in the power system, the use of energy storage products to store the excess supply of existing electricity is not only a full utilization of existing energy, but also a powerful tool to reduce costs.

[0003] Current energy storage products are generally square tube-type energy storage cavities. The square tube-type energy storage cavity is a hollow deep cavity structure that is fully covered on all sides, penetrated at both ends, and has no support inside. The wall is thin and easy to deform. Therefore, during processing, it is generally composed of two symmetrical parts welded together.

[0004] After searching, the patent document (authorization announcement number is CN214236732U) discloses a profile stir friction welding fixture, including a base plate, on which a plurality of workpieces to be friction welded are placed, the workpieces to be friction welded are placed close to each other to form a whole workpiece to be friction welded, the three sides or four sides of the whole workpiece to be friction welded are limited by positioning blocks, the positioning blocks are fixed on the base plate, and a clamping cylinder is provided on the base plate near the end of each workpiece to be friction welded, that is, each workpiece to be friction welded is provided with two clamping cylinders.

[0005] When the above-mentioned clamp is in use, the workpiece to be friction welded is limited and fixed as a whole through the limiting interval formed by the multiple positioning blocks, and the workpiece to be friction welded is further limited and fixed by the clamping cylinder; however, since the multiple positioning blocks are fixedly arranged on the base plate, the size of the clamping interval that can be formed by the multiple positioning blocks is constant. When the multiple workpieces to be friction welded are placed in the limiting interval according to the welding state, the multiple workpieces to be friction welded are all in a shaking and free state within the limiting interval. Even if the multiple workpieces to be friction welded are subsequently clamped and limited by multiple clamping cylinders, it cannot be guaranteed that the positions of the multiple workpieces to be friction welded on the base plate as a whole will always remain consistent during the subsequent welding process, that is, the consistency of the multiple products after welding cannot be guaranteed.

[0006] Furthermore, if the above-mentioned clamp is used to clamp the two parts of the energy storage cavity of the hollow deep cavity structure, initially, the two symmetrical parts of the energy storage cavity are placed in the limit interval. However, due to the shape characteristics of the two symmetrical parts of the energy storage cavity being U-shaped openings, this limit interval cannot effectively limit the two symmetrical parts of the energy storage cavity. At the same time, the subsequent pressing of the pressing cylinder, since there is no supporting component for the energy storage cavity, the pressing cylinder is also prone to deformation damage to the two symmetrical parts of the energy storage cavity.

[0007] To this end, we propose a clamp for energy storage cavity friction stir welding to solve the problem that the clamp in the prior art cannot well clamp and limit the two symmetrical parts of the energy storage cavity, and cannot protect the energy storage cavity formed after welding. Utility Model Content

[0008] The purpose of the utility model is to solve the problems existing in the prior art and to propose a clamp for energy storage cavity friction stir welding, which is suitable for the energy storage cavity and can be used to clamp and limit the two symmetrical parts of the energy storage cavity, thereby facilitating subsequent welding work.

[0009] In order to solve the above problems, the utility model provides the following technical solutions:

[0010] A fixture for energy storage cavity friction stir welding comprises a base for carrying two workpieces to be welded and a pre-positioning component arranged on the base, wherein:

[0011] The pre-positioning assembly includes a support platform disposed on a base, the support platform having a lower channel for one side of the workpiece to be welded to pass through, and the support platform also has an upper lifting surface for supporting the other side of the workpiece to be welded;

[0012] It also includes two clamping assemblies, which are respectively used to clamp one side of two workpieces to be welded on the upper lifting surface, and a moving area for the welding head to move is formed between the two clamping assemblies.

[0013] As a further solution of the utility model: one end of the support platform is movably arranged on the base, and a locking member for locking the other end of the support platform is arranged on the base.

[0014] As a further solution of the utility model: the lock element includes a lock tongue arranged on the base, and a lock tongue seat matched with the lock tongue is arranged at the end of the support platform.

[0015] As a further solution of the utility model: an eccentric support that can interfere with the base is rotatably arranged on the support platform, and an operating rod is fixedly arranged on the eccentric support. When the eccentric support interferes with the base, the direction of the interference force of the eccentric end of the eccentric support on the base is the same as the direction of the locking force of the locking element on the support platform.

[0016] As a further solution of the utility model: the middle position of the upper lifting surface is recessed inward to form a groove, and a plurality of adjustment support blocks are movably arranged in the groove, and the plurality of adjustment support blocks can all pass through the groove and be higher than the upper lifting surface.

[0017] As a further solution of the utility model: the clamping assembly includes a cylinder and a cylinder connecting seat arranged on a base, the cylinder connecting seat is provided with a movable hinge, the movable hinge is provided with a bent arm, the bent arm is detachably provided with a top pressure beam, and the top pressure beam is located above the support platform.

[0018] As a further solution of the utility model: it also includes a clamping assembly, which is arranged on the base and has a clamping area with adjustable size, and the support platform is located in the clamping area; the clamping assembly includes two fixed strips fixedly arranged on the base, and the support platform is located between the two fixed strips, one of the fixed strips is movably provided with a plurality of clamping blocks on one side close to the support platform, and the clamping area is formed between the plurality of clamping blocks and the other fixed strip.

[0019] As a further solution of the utility model: multiple groups of mounting parts are provided on the fixed long strip, the multiple groups of mounting parts are arranged along the length direction of the fixed long strip, and the multiple groups of mounting parts are respectively arranged in one-to-one correspondence with multiple clamping blocks, each group of mounting parts includes a number of movable pins, and the several movable pins are movably set on the fixed long strip, the clamping blocks are fixedly set on the several movable pins, and the fixed long strip is provided with a reset spring fixedly connected to the movable pins.

[0020] As a further solution of the utility model: a plurality of handles are movably provided on the fixed strip, the plurality of handles are respectively provided in one-to-one correspondence with the plurality of clamping blocks, and the plurality of handles are respectively connected with the corresponding clamping blocks.

[0021] As a further solution of the utility model: a stopper is fixedly arranged on the base, and the stopper is used to prevent the welding workpiece from moving toward the length direction of the fixed strip.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. Through the setting of the pre-positioning component, the two workpieces to be welded can be pre-positioned on the base by using the support table in the pre-positioning component. Since the two workpieces to be welded are both U-shaped openings, the support table can be used to support the openings of the two workpieces to be welded. At the same time, the support table can be locked on the base by using a lock, that is, the positions of the two workpieces to be welded are locked on the base, and then the eccentric support is driven to rotate until the eccentric support conflicts with the base, which can make the locking between the support table and the base more stable, ensuring the accuracy of the subsequent welding of the two workpieces to be welded;

[0024] 2. Through the setting of the clamping assembly, a clamping area with adjustable size is formed between the multiple clamping blocks and the fixed strip. The clamping area can be used to clamp the two pre-positioned workpieces to be welded. During this clamping process, due to the presence of multiple clamping blocks, the workpieces to be welded will not be subject to significant clamping damage; at the same time, due to the presence of the clamping area, the positions of the subsequent workpieces to be welded can be the same, ensuring the consistency of multiple products after welding;

[0025] 3. By setting up multiple adjustment support blocks, before welding, the heights of multiple adjustment support blocks on the groove can be pre-set, so that multiple adjustment support blocks can lift up the side of the two workpieces to be welded that are close to each other and form an arc shape. After welding is completed, this preset lifting can play a role in anti-deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0029] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 4 It is a schematic diagram of the overall structure of the support platform on the base in the utility model;

[0031] Figure 5 It is a schematic diagram of the overall structure of the support platform and the lock member in the utility model;

[0032] Figure 6 It is a schematic diagram of the overall structure of two workpieces to be welded in the utility model arranged on a support platform;

[0033] Figure 7 It is an overall structural schematic diagram of two workpieces to be welded in the utility model in a welding working state.

[0034] In the figure: 1. base; 2. support platform; 201. lower channel; 202. upper lifting surface; 3. fixed strip; 4. clamping block; 5. locking piece; 6. eccentric support; 7. mounting piece; 701. movable pin; 702. reset spring; 8. handle; 9. cylinder; 10. cylinder connecting seat; 11. movable hinge; 12. bending arm; 13. top pressure beam; 14. adjusting support block; 15. stop block; 16. operating lever; a. workpiece to be welded; b. welding head. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1-Figure 7 As shown, a fixture for energy storage cavity friction stir welding is used to clamp and position two parts that constitute a square tube-type energy storage cavity, that is, to clamp and position two workpieces a to be welded; specifically, the fixture includes a base 1 and a pre-positioning component arranged on the base 1, wherein: after the two workpieces a to be welded are placed on the base 1, the pre-positioning component can be used to pre-position the two workpieces a to be welded on the base 1, so that the positions of the two workpieces a to be welded can meet subsequent welding requirements.

[0037] like Figure 1 and Figure 4-Figure 6 As shown, for the setting of the above-mentioned pre-positioning component, the pre-positioning component includes a support table 2 movably arranged on the base 1, the support table 2 has a lower channel 201 for one side of the workpiece a to be welded to pass through, and the support table 2 also has an upper lifting surface 202 for supporting the other side of the workpiece a to be welded; in the process of placing the two workpieces a to be welded on the base 1, the lower channel 201 is used for one side of the two workpieces a to be welded to pass through, and at the same time, the other sides of the two workpieces a to be welded will be placed on the upper lifting surface 202, so that the two workpieces a to be welded can be well preset on the base 1, which is convenient for subsequent welding.

[0038] like Figure 4 As shown, one end of the support platform 2 is movably arranged on the base 1, and a lock 5 for locking the other end of the support platform 2 is arranged on the base 1. The lock 5 includes a lock tongue arranged on the base 1, and a lock tongue seat adapted to work with the lock tongue is arranged at the end of the support platform 2. At the same time, an eccentric support 6 is rotatably arranged on the support platform 2, and an operating rod 16 is fixedly arranged on the eccentric support 6. When the eccentric support 6 conflicts with the base 1, that is, Figure 4 In the state shown, the direction of the resisting force of the eccentric support 6 on the base 1 is the same as the direction of the locking force of the lock member 5 on the support platform 2, so that the locking action between the lock tongue and the lock tongue seat is tighter.

[0039] When it is necessary to assemble two workpieces a to be welded on the base 1, the operating rod 16 can be driven to remain horizontal first. The rotation of the operating rod 16 can drive the eccentric support 6 to rotate, so that the eccentric end of the eccentric support 6 is disengaged from the base and does not conflict with the base 1. Then the locking effect of the lock 5 on the support platform 2 can be released. Since one end of the support platform 2 is movably mounted on the base 1, the staff can drive the support platform 2 to rotate with its hinge point as the center of the circle. Next, the two workpieces a to be welded are set on the base 1, and are pre-limited on the base 1 by the lower channel 201 and the upper lifting surface 202 on the support platform 2. At this time, the status of the two workpieces a to be welded and the support platform 2 can be determined by Figure 6 Then the support platform 2 can be locked on the base 1 by using the lock 5. Figure 4 and Figure 5 The lock 5 shown in is set as a hasp lock. Of course, in actual use, it is not limited to setting the lock 5 as a hasp lock, and the lock 5 can also be set as other locks in the prior art, as long as it can achieve the function of locking the support platform 2.

[0040] After locking the support platform 2 with the lock 5, the staff can drive the operating lever 16 to rotate, and the rotation of the operating lever 16 can drive the eccentric support 6 to rotate until the eccentric end of the eccentric support 6 conflicts with the base 1. At this time, the position of the support platform 2 will be completely locked under the limiting action of the lock 5 and the eccentric support 6, ensuring the pre-positioning and limiting effect of the support platform 2 on the two workpieces a to be welded. Due to the existence of the support platform 2, it can better meet the U-shaped characteristics of the two workpieces a to be welded, support the positions of the openings of the two workpieces a to be welded, and ensure the accuracy of positioning.

[0041] Further, such as Figure 4-Figure 5 As shown, in the process of welding two workpieces a to be welded via welding head b, in order to prevent the energy storage cavity formed by the welding of the two workpieces a to be welded from being deformed, the middle position of the upper lifting surface 202 can be recessed inward to form a groove, and a plurality of adjustment support blocks 14 that can penetrate the groove are movably arranged in the groove. Before welding, the heights at which the plurality of adjustment support blocks 14 penetrate the upper lifting surface 202 can be pre-set, so that the plurality of adjustment support blocks 14 can lift the side of the two workpieces a to be welded that are close to each other upward and in an arc shape. After the welding is completed, this preset lifting can effectively play a role in counter-deformation of the energy storage cavity. The adjustable position of the plurality of adjustment support blocks 14 on the groove can be achieved by bolts, etc. This is a conventional technical means, and in order to avoid cumbersome writing, it will not be repeated here.

[0042] like Figure 1-Figure 2 and Figure 6-Figure 7As shown, this embodiment also includes two clamping assemblies, which are used to clamp two workpieces a to be welded on one side of the upper lifting surface 202, and at the same time, an active area for the welding head b to move is formed between the two clamping assemblies. Specifically, the clamping assembly includes a cylinder 9 and a cylinder connecting seat 10 arranged on the base 1, and a movable hinge 11 is arranged on the cylinder connecting seat 10, and a bending arm 12 is arranged on the movable hinge 11. A top pressure beam 13 is detachably arranged on the bending arm 12, and the top pressure beam 13 is located above the support platform 2. Figure 6 As shown, after the clamping area is used to clamp the positions of the two workpieces a to be welded, the cylinder 9 can be used to drive the bending arm 12 and the top pressure beam 13 to perform corresponding actions, so that the top pressure beam 13 presses the workpiece a to be welded below it, and then the welding head b is used to weld the two workpieces a to be welded.

[0043] Of course, in this embodiment, the method of driving the top pressure beam 13 is not limited to being set as the cylinder 9, and can also be set as the existing technology such as the oil cylinder, as long as the driving action set can realize the top pressure beam 13 to press the welding workpiece a. On the basis of setting the above-mentioned pre-positioning components and clamping components, etc., this embodiment can also be fixed with a stopper 15 on the base 1, and the stopper 15 is located between the fixed strip 3 and the support table 2. The stopper 15 is used to prevent the welding workpiece a from moving toward the length direction of the fixed strip 3, which can better improve the limiting effect.

[0044] like Figure 1-Figure 3 As shown, a clamping assembly is additionally provided in the present embodiment, and the clamping assembly includes two fixed strips 3 fixedly arranged on the base 1, and the support platform 2 is located between the two fixed strips 3, and a plurality of clamping blocks 4 are movably provided on one side of one of the fixed strips 3 close to the support platform 2, and a clamping area with adjustable size is formed between the plurality of clamping blocks 4 and the other fixed strip 3; after the two workpieces a to be welded are pre-positioned by using the support platform 2, the two workpieces a to be welded will be placed on the clamping area, and then the plurality of clamping blocks 4 on the fixed strip 3 can be driven to move, so that the plurality of clamping blocks 4 jointly push one of the workpieces a to be welded to move, until the clamping area clamps the two workpieces a to be welded, and then the subsequent welding process can be performed.

[0045] Of course, in the process of clamping two workpieces a to be welded by the clamping area, in order to protect the workpieces a to be welded, a plurality of clamping blocks 4 can also be provided on the other fixed strip 3, and the material of the clamping blocks 4 can be set to rubber or the like.

[0046] like Figure 2-Figure 3As shown, in order to achieve the installation of multiple clamping blocks 4, multiple groups of mounting parts 7 can be provided on the fixed strip 3, and the multiple groups of mounting parts 7 are arranged along the length direction of the fixed strip 3, and the multiple groups of mounting parts 7 are respectively provided in one-to-one correspondence with the multiple clamping blocks 4, each group of mounting parts 7 includes a plurality of movable pins 701, and the plurality of movable pins 701 are movably provided on the fixed strip 3, and the clamping blocks 4 are fixedly provided on the plurality of movable pins 701, and the fixed strip 3 is provided with a reset spring 702 fixedly connected with the movable pins 701, specifically, the reset spring 702 can be sleeved on the movable pins 701; at the same time, multiple handles 8 are movably provided on the fixed strip 3, and the plurality of handles 8 are respectively provided in one-to-one correspondence with the plurality of clamping blocks 4, and the plurality of handles 8 are respectively connected to the corresponding clamping blocks 4, and when the handles 8 are driven to rotate, the clamping block 4 can be driven to move, and by controlling the rotation direction of the handles 8, the clamping block 4 can be moved toward another fixed strip 3, that is, the clamping area is reduced. At the same time, during the movement of the clamp block 4, the clamp block 4 will drive the movable pin 701 to move, and then the reset spring 702 will be compressed. When the handle 8 is reset and rotated, under the elastic action of the reset spring 702, the movable pin 701 will drive the clamp block 4 to reset and move.

[0047] It should be noted that the movement of the multiple clamping blocks 4 is not limited to the provision of the handle 8, and the handle 8 may also be replaced by an electric telescopic rod in the prior art, thereby realizing automatic adjustment of the size of the clamping area.

[0048] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A fixture for energy storage cavity friction stir welding, characterized in that: The invention comprises a base (1) for supporting two workpieces (a) to be welded and a pre-positioning component arranged on the base (1), wherein: The pre-positioning assembly comprises a support platform (2) arranged on a base (1), the support platform (2) having a lower channel (201) for one side of a workpiece (a) to be welded to pass through, and the support platform (2) also having an upper lifting surface (202) for supporting the other side of the workpiece (a) to be welded; It also includes two clamping assemblies, which are respectively used to clamp one side of two workpieces (a) to be welded located on the upper lifting surface (202), and a moving area for the welding head (b) to move is formed between the two clamping assemblies.

2. The energy storage cavity friction stir welding fixture according to claim 1, characterized in that: One end of the support platform (2) is movably arranged on the base (1), and a locking element (5) for locking the other end of the support platform (2) is arranged on the base (1).

3. The energy storage cavity friction stir welding fixture according to claim 2, characterized in that: The locking element (5) comprises a locking tongue arranged on a base (1), and a locking tongue seat matching the locking tongue is arranged at the end of the supporting platform (2).

4. The energy storage cavity friction stir welding fixture according to claim 3, characterized in that: An eccentric support (6) is rotatably arranged on the support platform (2) and can contact the base (1), and an operating rod (16) is fixedly arranged on the eccentric support (6). When the eccentric support (6) contacts the base (1), the direction of the contact force of the eccentric end of the eccentric support (6) on the base (1) is the same as the direction of the locking force of the locking element (5) on the support platform (2).

5. The energy storage cavity friction stir welding fixture according to claim 1, characterized in that: The middle portion of the upper lifting surface (202) is recessed inward to form a groove, and a plurality of adjustment support blocks (14) are movably arranged in the groove. The plurality of adjustment support blocks (14) can all pass through the groove and be higher than the upper lifting surface (202).

6. A fixture for energy storage cavity friction stir welding according to any one of claims 1 to 5, characterized in that: The clamping assembly comprises a cylinder (9) and a cylinder connecting seat (10) arranged on a base (1); a movable hinge (11) is arranged on the cylinder connecting seat (10); a bent arm (12) is arranged on the movable hinge (11); a top pressure beam (13) is detachably arranged on the bent arm (12); and the top pressure beam (13) is located above the support platform (2).

7. The energy storage cavity friction stir welding fixture according to claim 6, characterized in that: It also comprises a clamping assembly, which is arranged on the base (1) and has a clamping area with an adjustable size, and the support platform (2) is located in the clamping area; the clamping assembly comprises two fixed strips (3) fixedly arranged on the base (1), and the support platform (2) is located between the two fixed strips (3), wherein a plurality of clamping blocks (4) are movably arranged on one side of one of the fixed strips (3) close to the support platform (2), and the clamping area is formed between the plurality of clamping blocks (4) and the other fixed strip (3).

8. The energy storage cavity friction stir welding fixture according to claim 7, characterized in that: The fixed strip (3) is provided with a plurality of groups of mounting parts (7), which are arranged along the length direction of the fixed strip (3), and the plurality of groups of mounting parts (7) are respectively arranged in one-to-one correspondence with the plurality of clamping blocks (4), each group of mounting parts (7) comprises a plurality of movable pins (701), the plurality of movable pins (701) are movably arranged on the fixed strip (3), the clamping blocks (4) are fixedly arranged on the plurality of movable pins (701), and the fixed strip (3) is provided with a return spring (702) fixedly connected to the movable pins (701).

9. The energy storage cavity friction stir welding fixture according to claim 8, characterized in that: A plurality of handles (8) are movably arranged on the fixed strip (3), the plurality of handles (8) are respectively arranged in one-to-one correspondence with the plurality of clamping blocks (4), and the plurality of handles (8) are respectively connected to the corresponding clamping blocks (4).

10. The energy storage cavity friction stir welding fixture according to claim 7, characterized in that: A stopper (15) is fixedly arranged on the base (1), and the stopper (15) is used to prevent the welding workpiece (a) from moving in the length direction of the fixed strip (3).

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