A clamping device

Abstract

The utility model discloses a clamping device, including middle part clamping subassembly and two end part clamping subassembly of symmetrical setting in middle part clamping subassembly both sides, middle part clamping subassembly includes middle part support, the arm of support and middle part driving part of installing on middle part support, the pressure arm of being driven by middle part driving part, the movable, end part clamping subassembly includes end part support, end part telescopic spare and end part clamping spare of being located in the movable end of end part telescopic spare of installing on end part support, and the movable end of end part telescopic spare is equipped with the location hole and the fixture, utilize the limit mode of axle positioning and axle positioning and fixture combination, respectively to main body sheet metal spare and side plate sheet metal spare are limited, only through the arm of support and pressure arm to main body sheet metal spare are clamped, through end part clamping spare to the end of side plate sheet metal spare is clamped, effectively reduce the clamp quantity required by welding frock, improve production efficiency, reduce the cost of maintenance clamp in later period, promote production benefit.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a clamping device. Background Technology

[0002] In the manufacturing of automotive airbag housings, the structure typically consists of a U-shaped main sheet metal part and side sheet metal parts that cover both ends of the U-shape, assembled and welded together. To ensure precise alignment and a stable relative position between the U-shaped sheet metal part and the two side panels before welding, traditional clamping devices require numerous specialized fixtures. These fixtures must apply independent positioning and clamping forces to specific parts of the U-shaped sheet metal part and the two side panels to achieve the required geometric accuracy and stability for assembly.

[0003] However, overly complex fixtures not only increase the time cost of operation and affect production efficiency, but also increase the cost of maintaining the fixtures later, thus affecting production benefits. Utility Model Content

[0004] In view of this, the present invention provides a clamping device to solve the problem that the clamping devices in the prior art use overly complicated clamps, which not only increases the time cost of operation and affects production efficiency, but also increases the cost of later maintenance of the clamps and affects production benefits.

[0005] To achieve one or more of the above objectives or other objectives, this utility model proposes a clamping device, including a central clamping component and two end clamping components symmetrically arranged on both sides of the central clamping component.

[0006] The central clamping assembly includes a central support, a support arm mounted on the central support, a central drive component, and a downwardly movable pressure arm driven by the central drive component. The support arm is used to support the main sheet metal part and has at least two vertically positioned shafts on it. The positioning shafts are used to insert into corresponding holes on the bottom wall of the main sheet metal part to restrict its horizontal movement. The pressure arm is used to press down and abut against the inner wall of the main sheet metal part to restrict its vertical movement.

[0007] The end clamping assembly includes an end bracket, an end telescopic member mounted on the end bracket, and an end clamping member located at the movable end of the end telescopic member. The movable end of the end telescopic member is provided with a positioning hole and a locking position. The positioning hole is used for the insertion of a limiting post of the side panel sheet metal part to limit its movement in the radial direction of the positioning hole. The locking position is used to engage with the corner of the side panel sheet metal part to limit its rotation about the positioning hole. The end clamping member is used to clamp the end of the side panel sheet metal part after it has been limited by the positioning hole and the locking position. The end telescopic member is used to drive its movable end to move the clamped side panel sheet metal part to the adjacent end opening that covers the main body sheet metal part.

[0008] Preferably, the central driving component is a clamping cylinder, which is located on the outside of the central support. A swing arm is driven to the top of the clamping cylinder, and the pressure arm is fixedly connected to the swing arm.

[0009] Preferably, the pressure arm includes a driving part, a connecting part, and a pressing part. The driving part is connected to the swing arm. The middle part of the connecting part is fixed to the end of the driving part away from the swing arm and is horizontally arranged along the vertical direction of the driving part. The pressing part has two parts and is symmetrically arranged at both ends of the connecting part for pressing down and abutting against the inner wall of the main sheet metal part.

[0010] Preferably, the support arm includes a main arm and a secondary arm. The main arm is fixedly connected to the inner side of the central support. The middle part of the secondary arm is fixedly connected to the end of the main arm away from the central support and is horizontally arranged along the vertical direction of the main arm. Both ends of the secondary arm are provided with central support blocks. The two central support blocks are used to support the main sheet metal part.

[0011] Preferably, a clamping bracket is fixedly provided on one side of the movable end of the end telescopic member. The end clamping member includes a telescopic cylinder, a clamping arm, and a clamping block. The telescopic cylinder and the clamping block are respectively arranged vertically on the clamping bracket. The rear end of the clamping arm is hinged to the telescopic rod of the telescopic cylinder, and the middle part of the clamping arm is hinged to the clamping bracket. The telescopic cylinder can drive the front end of the clamping arm to swing down, and cooperate with the clamping block to clamp the upper end of the side plate sheet metal part.

[0012] Preferably, the end clamping member further includes an end support block, which is disposed on the clamping bracket and located below the clamping block, for supporting the lower end of the side panel sheet metal part.

[0013] Preferably, a positioning arm is fixedly connected to one side of the movable end of the end telescopic member, and the positioning hole and the locking position are formed at the end of the positioning arm.

[0014] Preferably, the end telescopic member is arranged obliquely upwards.

[0015] Preferably, the clamping device further includes an unloading telescopic component, which is positioned upward below the support arm to lift the welded airbag box upward, helping the airbag box to disengage from the positioning post.

[0016] Preferably, the support arm is provided with a central sensor for confirming that the main sheet metal part is clamped in place, and the clamping block is fitted with an end sensor for confirming that the side sheet metal part is clamped in place.

[0017] Implementing the embodiments of this utility model will have the following beneficial effects:

[0018] After adopting the above-mentioned clamping device, in use, first place the main sheet metal part on the support arm, and insert the positioning shaft into the corresponding hole on the bottom wall of the main sheet metal part to restrict its horizontal movement. Then, drive the pressure arm downward through the middle drive component to abut against the inner wall of the main sheet metal part to restrict its vertical movement and fix the main sheet metal part. Then, through the cooperation of the limiting post on the outer side of the side sheet metal part with the positioning hole, the side sheet metal part is sleeved on the movable end of the end telescopic component, and the corner of the side sheet metal part is locked in the locking position. Then, the end clamping component clamps the end of the side sheet metal part after being limited by the positioning hole and the locking position, and fixes the side sheet metal part to the movable end of the end telescopic component. Finally, driven by the end telescopic component, the side plate sheet metal part is moved to cover the adjacent end opening of the main sheet metal part, thereby realizing the splicing of the side plate sheet metal part and the main sheet metal part for the next welding operation. Using the dual-axis positioning and the limiting method of axis positioning and clamping, the main sheet metal part and the side plate sheet metal part are limited respectively. The main sheet metal part is clamped only by the support arm and the pressure arm, and the end clamping component is used to clamp the end of the side plate sheet metal part. This effectively reduces the number of fixtures required for welding tooling, avoids the use of complicated fixtures, reduces the time cost of operation, improves production efficiency, reduces the cost of later maintenance of fixtures, and improves production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] in:

[0021] Figure 1 This is a perspective view of the entire utility model;

[0022] Figure 2 This is a perspective view of the present invention with one end clamping component hidden.

[0023] Figure 3 This is a perspective view of the central clamping component in this utility model;

[0024] Figure 4 This is a perspective view of the end clamping component of this utility model;

[0025] Figure 5 This is a perspective view of the side panel sheet metal part and the main body sheet metal part after being spliced ​​together in this utility model.

[0026] In the diagram: 1. Middle support; 11. Positioning shaft; 12. Middle drive component; 2. Support arm; 21. Main arm; 22. Secondary arm; 23. Middle support block; 3. Pressure arm; 31. Drive unit; 32. Connecting unit; 33. Pressing unit; 4. End support; 41. End telescopic component; 42. Clamping support; 5. End clamping component; 51. Telescopic cylinder; 52. Clamping arm; 53. Clamping block; 54. End support block; 6. Positioning arm; 61. Positioning hole; 62. Locking position; 7. Unloading telescopic component; 81. Middle sensor; 82. End sensor; 91. Main sheet metal part; 92. Side sheet metal part; 93. Limiting post. Detailed Implementation

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this invention, are intended to cover non-exclusive inclusion. The terms "middle," "end," etc., in the specification, claims, or foregoing drawings of this invention are used to distinguish different objects and not to describe a particular order.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] like Figure 1-5 As shown, a clamping device includes a central clamping assembly and two end clamping assemblies symmetrically arranged on both sides of the central clamping assembly.

[0031] The central clamping assembly includes a central support 1, a support arm 2 mounted on the central support 1, a central drive 12, and a downwardly movable pressure arm 3 driven by the central drive 12. The support arm 2 is used to support the main sheet metal part 91, and at least two positioning shafts 11 are vertically provided on it. The positioning shafts 11 are used to insert into corresponding holes on the bottom wall of the main sheet metal part 91 to restrict its horizontal movement. The pressure arm 3 is used to press down and abut against the inner wall of the main sheet metal part 91 to restrict its vertical movement.

[0032] The end clamping assembly includes an end bracket 4, an end telescopic member 41 mounted on the end bracket 4, and an end clamping member 5 located at the movable end of the end telescopic member 41. The movable end of the end telescopic member 41 is provided with a positioning hole 61 and a locking position 62. The positioning hole 61 is used for the insertion of the limiting post 93 of the side plate sheet metal part 92 to limit its movement in the radial direction of the positioning hole 61. The locking position 62 is used to engage with the corner of the side plate sheet metal part 92 to limit its rotation about the positioning hole 61. The end clamping member 5 is used to clamp the end of the side plate sheet metal part 92 after it is limited by the positioning hole 61 and the locking position 62. The end telescopic member 41 is used to drive its movable end to move the clamped side plate sheet metal part 92 to the adjacent end opening that covers the main body sheet metal part 91.

[0033] In use, first place the main sheet metal part 91 on the support arm 2, and insert the positioning shaft 11 into the corresponding hole on the bottom wall of the main sheet metal part 91 to restrict its horizontal movement. Then, drive the pressure arm 3 downward through the middle drive member 12 to abut against the inner wall of the main sheet metal part 91 to restrict its vertical movement, thus fixing the main sheet metal part 91. Then, through the cooperation of the limiting post 93 on the outer side of the side sheet metal part 92 and the positioning hole 61, the side sheet metal part 92 is sleeved on the movable end of the end telescopic member 41, and the corner of the side sheet metal part 92 is locked in the locking position 62. Then, the end clamping member 5 clamps the end of the side sheet metal part 92 after being limited by the positioning hole 61 and the locking position 62, thus fixing the side sheet metal part 92 to the movable end of the end telescopic member 41. Finally, driven by the end telescopic component 41, the side plate sheet metal part 92 is moved to cover the adjacent end opening of the main sheet metal part 91, thereby realizing the splicing of the side plate sheet metal part 92 and the main sheet metal part 91 for the next welding operation. Using the dual-axis positioning and the limiting method of the combination of axis positioning and clamping position 62, the main sheet metal part 91 and the side plate sheet metal part 92 are limited respectively. The main sheet metal part 91 is clamped only by the support arm 2 and the pressure arm 3, and the end of the side plate sheet metal part 92 is clamped by the end clamping component 5. This effectively reduces the number of fixtures required for welding tooling, avoids the use of complicated fixtures, reduces the time cost of operation, improves production efficiency, reduces the cost of later maintenance of fixtures, and improves production efficiency.

[0034] Furthermore, the central drive component 12 is a clamping cylinder, which is located on the outside of the central support 1. A swing arm is driven and connected to the top of the clamping cylinder, and the pressure arm 3 is fixedly connected to the swing arm.

[0035] In one embodiment, the central drive component 12 may be a cylinder, which is arranged facing upwards and can drive the pressure arm 3 to move downwards and abut against the inner wall of the main sheet metal part 91.

[0036] Furthermore, the pressure arm 3 includes a drive part 31, a connecting part 32, and a pressing part 33. The drive part 31 is connected to the swing arm. The middle part of the connecting part 32 is fixedly connected to the end of the drive part 31 away from the swing arm and is horizontally arranged along the vertical direction of the drive part 31. The pressing part 33 has two parts and is symmetrically arranged at both ends of the connecting part 32 for pressing down and abutting against the inner wall of the main sheet metal part 91.

[0037] Furthermore, the support arm 2 includes a main arm 21 and a secondary arm 22. The main arm 21 is fixed to the inner side of the central support 1. The middle part of the secondary arm 22 is fixed to the end of the main arm 21 away from the central support 1 and is horizontally arranged along the vertical direction of the main arm 21. Both ends of the secondary arm 22 are provided with central support blocks 23. The two central support blocks 23 are used to support the bottom wall of the main sheet metal part 91 at two points respectively. With the insertion of the positioning shaft 11, the main sheet metal part 91 is kept horizontal.

[0038] Furthermore, a clamping bracket 42 is fixedly provided on one side of the movable end of the end telescopic member 41. The end clamping member 5 includes a telescopic cylinder 51, a clamping arm 52, and a clamping block 53. The telescopic cylinder 51 and the clamping block 53 are respectively arranged vertically on the clamping bracket 42. The rear end of the clamping arm 52 is hinged to the telescopic rod of the telescopic cylinder 51, and the middle part of the clamping arm 52 is hinged to the clamping bracket 42. The telescopic cylinder 51 can drive the clamping arm 52 through the telescopic rod, so that the front end of the clamping arm 52 swings down around the hinge axis in the middle part, and cooperates with the clamping block 53 to clamp the upper end of the side plate sheet metal part 92, thereby completely fixing the side plate sheet metal part 92 to the movable end of the end telescopic member 41, so that the end telescopic member 41 can move the side plate sheet metal part 92 to accurately cover the adjacent end opening of the main body sheet metal part 91.

[0039] Furthermore, the end clamping member 5 also includes an end support block 54, which is disposed on the clamping bracket 42 and located below the clamping block 53. It is used to support the lower end of the side plate sheet metal part 92, further providing support for the clamping of the side plate sheet metal part 92 and improving the clamping accuracy and stability of the side plate sheet metal part 92.

[0040] Furthermore, a positioning arm 6 is fixedly connected to one side of the movable end of the end telescopic member 41, and a positioning hole 61 and a locking position 62 are formed at the end of the positioning arm 6.

[0041] Furthermore, the end telescopic component 41 is obliquely arranged upward towards the support arm 2 so that the end telescopic component 41 moves obliquely from bottom to top to cover the adjacent end opening of the main sheet metal component 91. This makes it easier for the lower flange of the side sheet metal component 92 to cover the lower edge of the adjacent end opening of the main sheet metal component 91, reducing the probability of interference between the two during the covering process and improving production efficiency.

[0042] Furthermore, the clamping device also includes an unloading telescopic component 7, which is a cylinder. The unloading telescopic component 7 is positioned upward below the support arm 2 and is used to lift the welded airbag box upward, helping the airbag box to disengage from the positioning shaft 11 and improving the disassembly efficiency of the workpiece.

[0043] Furthermore, the support arm 2 is provided with a central sensor 81 for confirming that the main sheet metal part 91 is clamped in place, and the clamping block 53 is fitted with an end sensor 82 for confirming that the side sheet metal part 92 is clamped in place. The central sensor 81 and the end sensor 82 can be pressure sensors or distance sensors. This detection method is existing technology and will not be described in this embodiment.

[0044] Specifically, the aforementioned telescopic component can be any electric or pneumatic device capable of telescopic function, such as a linear motor, and in this embodiment, a cylinder is preferred.

[0045] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A clamping device, characterized in that, include: A central clamping assembly, and two end clamping assemblies symmetrically arranged on both sides of the central clamping assembly; The central clamping assembly includes a central support, a support arm mounted on the central support, a central drive component, and a downwardly movable pressure arm driven by the central drive component. The support arm is used to support the main sheet metal part and has at least two vertically positioned shafts on it. The positioning shafts are used to insert into corresponding holes on the bottom wall of the main sheet metal part to restrict its horizontal movement. The pressure arm is used to press down and abut against the inner wall of the main sheet metal part to restrict its vertical movement. The end clamping assembly includes an end bracket, an end telescopic member mounted on the end bracket, and an end clamping member located at the movable end of the end telescopic member. The movable end of the end telescopic member is provided with a positioning hole and a locking position. The positioning hole is used for the insertion of a limiting post of the side panel sheet metal part to limit its movement in the radial direction of the positioning hole. The locking position is used to engage with the corner of the side panel sheet metal part to limit its rotation about the positioning hole. The end clamping member is used to clamp the end of the side panel sheet metal part after it has been limited by the positioning hole and the locking position. The end telescopic member is used to drive its movable end to move the clamped side panel sheet metal part to the adjacent end opening that covers the main body sheet metal part.

2. The clamping device according to claim 1, characterized in that, The central driving component is a clamping cylinder, which is located on the outside of the central support. A swing arm is driven and connected to the top of the clamping cylinder, and the pressure arm is fixedly connected to the swing arm.

3. The clamping device according to claim 1, characterized in that, The pressure arm includes a driving part, a connecting part, and a pressing part; The drive unit is connected to the swing arm, and the middle part of the connecting part is fixed to the end of the drive unit away from the swing arm and is horizontally arranged along the vertical direction of the drive unit. The pressing part has two parts and is symmetrically arranged at both ends of the connecting part, which are used to press down and abut against the inner wall of the main sheet metal part.

4. The clamping device according to claim 1, characterized in that, The support arm includes a main arm and a secondary arm; The main arm is fixed to the inner side of the central support. The middle part of the auxiliary arm is fixed to the end of the main arm away from the central support and is horizontally arranged along the vertical direction of the main arm. Both ends of the auxiliary arm are provided with central support blocks. The two central support blocks are used to support the main sheet metal parts.

5. A clamping device according to claim 1, characterized in that, A clamping bracket is fixedly provided on one side of the movable end of the end telescopic component. The end clamping component includes a telescopic cylinder, a clamping arm, and a clamping block. The telescopic cylinder and the clamping block are respectively arranged vertically on the clamping bracket. The rear end of the clamping arm is hinged to the telescopic rod of the telescopic cylinder, and the middle part of the clamping arm is hinged to the clamping bracket. The telescopic cylinder can drive the front end of the clamping arm to swing down, and cooperate with the clamping block to clamp the upper end of the side plate sheet metal part.

6. A clamping device according to claim 5, characterized in that, The end clamping component also includes an end support block, which is disposed on the clamping bracket and located below the clamping block, for supporting the lower end of the side panel sheet metal part.

7. A clamping device according to claim 1, characterized in that, A positioning arm is fixedly connected to one side of the movable end of the end telescopic component, and the positioning hole and the locking position are formed at the end of the positioning arm.

8. A clamping device according to claim 1, characterized in that, The end telescopic component is set at an upward angle.

9. A clamping device according to claim 1, characterized in that, The clamping device also includes a discharge telescopic component, which is positioned upwards below the support arm and is used to lift the welded airbag box upwards, helping the airbag box to disengage from the positioning post.

10. A clamping device according to claim 5, characterized in that, The support arm is equipped with a central sensor to confirm that the main sheet metal part is clamped in place, and the clamping block is fitted with an end sensor to confirm that the side sheet metal part is clamped in place.

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