A clamp for welding vehicle seat frame

Abstract

The present invention relates to a clamp for welding a vehicle seat frame, comprising a first clamping mechanism, a second clamping mechanism, a third clamping mechanism, a fourth clamping mechanism, and a fifth clamping mechanism arranged on a base for clamping and fixing a first component, a second component, a third component, a fourth component, and a fifth component respectively; the first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism, and the fifth clamping mechanism clamp the first component, the second component, the third component, the fourth component, and the fifth component respectively and make them in the following state A. The above scheme provided by the present invention can realize reliable welding of the assembly constituting the vehicle seat, and has high welding efficiency and good welding quality.

Description

Technical Field

[0001] The invention relates to the field of vehicle seat production, and in particular to a clamp used for welding a vehicle seat frame. Background Art

[0002] Automobile seat frames are basically produced by welding process, so special welding fixtures are needed to reliably clamp these workpieces. Due to the great differences between the body structures of different models and categories, the seat structures required by these models are also different, and the shapes and structures of the components (assemblies) of their seat frames are also different. Therefore, it is necessary to design new welding fixtures that can reliably clamp these parts to improve production efficiency and welding quality. Summary of the invention

[0003] The object of the present invention is to provide a clamp for welding a vehicle seat frame, which can improve the efficiency and quality of seat production.

[0004] The present invention is specifically implemented according to the technical solutions described below.

[0005] A clamp for welding a vehicle seat frame, characterized in that it includes a first clamping mechanism, a second clamping mechanism, a third clamping mechanism, a fourth clamping mechanism, and a fifth clamping mechanism arranged on a base for clamping and fixing a first component, a second component, a third component, a fourth component, and a fifth component respectively; the first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism, and the fifth clamping mechanism respectively clamp the first component, the second component, the third component, the fourth component, and the fifth component and make them be in the following A state: the A state is that the second component and the third component are located on the A side of the fifth component, the first component and the fourth component are located on the B side of the fifth component, one side edge of the first plate body and the middle part of the first rod segment overlap and the overlapping part is in a state capable of being welded, the two ends of the fourth rod segment are respectively assembled and connected in the assembly connection grooves on the second component and the third component and the connection part is in a state capable of being welded, and the middle part of the fourth rod segment is assembled and connected in the assembly connection groove on the fourth component and the connection part is in a state capable of being welded.

[0006] The specific operation is as follows: the fifth clamping mechanism includes an A2 clamping part for clamping the second shaft segment, an A3 clamping part for clamping the fourth shaft segment between the sixth shaft segment and the second component, an A4 clamping part for clamping the eighth shaft segment, and an A5 clamping part for clamping the ninth shaft segment.

[0007] The A2 clamping part comprises an A2 clamping block and a movably mounted A2 clamping assembly, and the A2 clamping block is provided with a supporting inclined surface for supporting the second rod shaft segment.

[0008] The A2 clamping assembly includes an A2 pressure block for pressing the junction between the second shaft segment and the fourth shaft segment, and an A2 pressure plate composed of a folded plate body. One plate body portion of the A2 pressure plate is used to press the remaining segments of the second shaft segment, and the side edge of the other plate body portion is abutted against the first shaft segment for positioning.

[0009] The A3 clamping part comprises an A3 clamping block, an upper surface of the A3 clamping block is provided with a supporting groove, and the fourth rod section is arranged in the supporting groove.

[0010] The A4 clamping part includes an A4 clamping block and a movably installed A4 clamping assembly, the A4 clamping block is provided with an A4 supporting groove for supporting the eighth rod segment, the A4 supporting groove is a U-shaped groove, the length of the A4 supporting groove is consistent with the length of the eighth rod segment, the A4 clamping assembly includes an A4 pressing plate and an A4 pressing block, the A4 pressing plate is a folded pressing plate, including an A4 horizontal plate body and an A4 vertical plate body, the A4 horizontal plate body is used to press the eighth rod segment, the A4 vertical plate body is used to abut against the outer end of the eighth rod segment, and the A4 pressing block is used to press the sixth rod segment.

[0011] The A5 clamping part includes an A5 clamping block and a movably installed A5 clamping assembly. The A5 clamping block is provided with an A5 supporting groove for supporting the ninth rod segment. The A5 supporting groove is a V-shaped groove. The length of the A5 supporting groove is greater than the length of the ninth rod segment, and the groove depth of the A5 supporting groove is less than the diameter of the ninth rod segment. The A5 clamping assembly includes an A5 pressing plate and an A5 pressing block. The A5 pressing plate presses the ninth rod segment, and the A5 pressing block is used to abut and position against the outer end of the ninth rod segment.

[0012] The first clamping mechanism includes a B1 support block for supporting the first plate body and a movably installed B1 pressing block for pressing the first plate body. The B1 support block is provided with a B1 positioning pin, which is assembled and positioned with a waist-shaped hole provided on the first plate body.

[0013] The second clamping mechanism includes a B2 support block for supporting the second component and a B2 pressure block movably installed for pressing the second component, the B2 support block is provided with a B21 positioning pin and a B22 positioning pin, and the B21 positioning pin and the B22 positioning pin are respectively assembled and positioned with two circular holes provided on the second component; the third clamping mechanism includes a B3 support block for supporting the third component and a B3 pressure block movably installed for pressing the third component, the B3 support block is provided with a B31 positioning pin and a B32 positioning pin, and the B31 positioning pin and the B32 positioning pin are respectively assembled and positioned with the two circular holes provided on the third component; the fourth clamping mechanism includes a B4 support block for supporting the fourth component and a B4 pressure block for pressing the fourth component, the B4 support block is provided with a B41 positioning pin and a B42 positioning pin that are respectively assembled and positioned with the upper two circular holes of the fourth component.

[0014] The A2 clamping assembly, the A4 clamping assembly, and the A5 clamping assembly are respectively installed on the A2 flip arm, the A4 flip arm, and the A5 flip arm; the B1 pressing block, the B2 pressing block, the B3 pressing block, and the B4 pressing block are respectively installed on the B1 flip arm, the B2 flip arm, the B3 flip arm, and the B4 flip arm; the A2 flip arm, the A4 flip arm, the A5 flip arm and the B1 flip arm, the B2 flip arm, the B3 flip arm, and the B4 flip arm are all rotatably installed on the base; the A2 flip arm, the A4 flip arm, the A5 flip arm, the B2 flip arm, and the B3 flip arm are respectively adjusted to flip by the A2 cylinder, the A4 cylinder, the A5 cylinder, the B2 cylinder, and the B3 cylinder; the B1 flip arm and the B4 flip arm are respectively manually adjusted to flip by the B1 operating handle and the B4 operating handle.

[0015] The above solution provided by the present invention can realize reliable welding of the assembly constituting the automobile seat, and has high welding efficiency and good welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 A schematic diagram of the structure of the assembly consisting of various components.

[0018] Figure 3 It is a structural schematic diagram of the partially clamping mechanism in the open state.

[0019] Figure 4 Another structural schematic diagram of a partially opened clamping mechanism.

[0020] Description of the figure numbers: 01-first component, 02-second component, 03-third component, 04-fourth component, 10-fifth component, 11-first shaft segment, 12-second shaft segment, 13-third shaft segment, 14-fourth shaft segment, 15-fifth shaft segment, 16-sixth shaft segment, 17-seventh shaft segment, 18-eighth shaft segment, 19-ninth shaft segment, 20-base, 22-A2 clamping block, 2 3-A3 clamping block, 24-A4 clamping block, 25-A5 clamping block, 26-A2 pressure block, 27-A2 pressure plate, 28-A4 pressure block, 29-A4 pressure plate, 30-A5 pressure block, 31-A5 pressure plate, 32-B1 support block, 33-B2 support block, 34-B3 support block, 35-B4 support block, 36-B1 pressure block, 37-B2 pressure block, 38-B3 pressure block, 39-B4 pressure block. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0022] As used herein, the terms "parallel," "perpendicular," and the like are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors.

[0023] like Figures 1 to 4As shown, a clamp for welding a vehicle seat frame includes a first clamping mechanism, a second clamping mechanism, a third clamping mechanism, a fourth clamping mechanism, and a fifth clamping mechanism arranged on a base 20 for clamping and fixing a first component 01, a second component 02, a third component 03, a fourth component 04, and a fifth component 10 respectively; the second component 02, the third component 03, and the fourth component 04 have the same structure, the second component 02 is composed of a plate, including a second plate body and an arc-shaped assembly connection groove arranged on one side of the second plate body, the notch of the assembly connection groove is arranged upward, and two circular holes are arranged on the second plate body; the first component 01 is composed of a plate, including a first plate body, and a waist-shaped hole is arranged on the first plate body The fifth component 10 is composed of a folded rod, and the two outer sides of the fifth component 10 are respectively marked as side A and side B, including a first shaft segment 11 arranged in a transverse shape, and the two ends of the first shaft segment 11 are respectively bent toward the side A to arrange a second shaft segment 12 and a third shaft segment 13, the plane where the first shaft segment 11 and the second shaft segment 12 are located is marked as a first plane, and the plane where the first shaft segment 11 and the third shaft segment 13 are located is marked as a second plane, the first plane and the second plane are arranged in an angle shape, and the second plane is arranged horizontally, the angle between the first shaft segment 11 and the second shaft segment 12 is smaller than the angle between the first shaft segment 11 and the third shaft segment 13, and the outer ends of the second shaft segment 12 and the third shaft segment 13 are respectively bent outwards to arrange a fourth shaft segment 14 and a third shaft segment 13. The fifth shaft segment 15, the fourth shaft segment 14 and the fifth shaft segment 15 are all arranged parallel to the first shaft segment 11, the length of the fourth shaft segment 14 is greater than the length of the fifth shaft segment 15, the outer end of the fourth shaft segment 14 is bent obliquely downward toward the A side to form a sixth shaft segment 16, the outer end of the fifth shaft segment 15 is bent obliquely upward toward the A side to form a seventh shaft segment, the sixth shaft segment 16 is bent and extended toward the A side to form an eighth shaft segment 18 arranged horizontally, the seventh shaft segment is bent and extended toward the A side to form a ninth shaft segment 19 arranged horizontally, the eighth shaft segment 18, the ninth shaft segment 19 and the first shaft segment 11 are all arranged vertically; the first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism and the fifth clamping mechanism are respectively connected to the first shaft segment 11. Component 01, second component 02, third component 03, fourth component 04, and fifth component 10 are clamped and placed in the following state A: State A is: the second component 02 and the third component 03 are located on the A side of the fifth component 10, the first component 01 and the fourth component 04 are located on the B side of the fifth component 10, one side edge of the first plate body and the middle portion of the first shaft segment 11 overlap each other, and the overlapping portion is in a weldable state, both ends of the fourth shaft segment 14 are respectively assembled and connected in the assembly connection grooves on the second component 02 and the third component 03, and the connection portion is in a weldable state, and the middle portion of the fourth shaft segment 14 is assembled and connected in the assembly connection groove on the fourth component 04, and the connection portion is in a weldable state.

[0024] By implementing the above solution, reliable welding of the assembly constituting the automobile seat can be achieved with high welding efficiency and good welding quality.

[0025] The detailed scheme is as follows: the fifth clamping mechanism includes an A2 clamping part for clamping the second shaft segment 12, an A3 clamping part for clamping the fourth shaft segment 14 between the sixth shaft segment 16 and the second component 02, an A4 clamping part for clamping the eighth shaft segment 18, and an A5 clamping part for clamping the ninth shaft segment 19. Since the fifth component 10 is composed of a plurality of shaft segments located on different planes, by selecting the above clamping points, the fifth component 10 can be reliably clamped, and the fifth component 10 can be reliably assembled with the first component 01, the second component 02, the third component 03, and the fourth component 04, and the position to be welded can be in a state that is convenient for welding, thereby improving welding efficiency.

[0026] Specifically, through the combination of the table and the step surface, the first shaft segment 11 can be reliably positioned and reliably overlapped with the first component 01, so that welding can be facilitated, and the placement of the fifth component 10 is simple and convenient. The A2 clamping part includes an A2 clamping block 22 and a movably installed A2 clamping assembly, and the A2 clamping block 22 is provided with a supporting inclined surface for supporting the second shaft segment 12. The A2 clamping assembly includes an A2 pressing block 26 for pressing the junction between the second shaft segment 12 and the fourth shaft segment 14, and an A2 pressing plate 27 composed of a folded plate body, one plate body portion of the A2 pressing plate 27 is used to press the remaining segments of the second shaft segment 12, and the side of the other plate body portion is abutted against the first shaft segment 11 for positioning. The A2 pressing plate is fixedly connected to the A2 pressing block through a connecting rod. Since the first shaft segment 11 needs to be welded to the first component 01, it is not easy to set a clamping piece on the upper side of the first shaft segment 11 to clamp it. Therefore, the first shaft segment 11 is abutted by the plate body portion of the A2 pressure plate 27, so that the first shaft segment 11 is reliably clamped and will not move during welding, thereby ensuring the reliability and quality of welding.

[0027] like Figure 3 , 4As shown, the A3 clamping part includes an A3 clamping block 23, the upper surface of the A3 clamping block 23 is provided with a support groove, and the fourth shaft segment 14 is arranged in the support groove. The A4 clamping part includes an A4 clamping block 24 and a movable A4 clamping assembly, the A4 clamping block 24 is provided with an A4 support groove for supporting the eighth shaft segment 18, the A4 support groove is a U-shaped groove, and the length of the A4 support groove is consistent with the length of the eighth shaft segment 18, the A4 clamping assembly includes an A4 pressing plate 29 and an A4 pressing block 28, the A4 pressing plate 29 is a folding pressing plate, including an A4 horizontal plate body and an A4 vertical plate body, the A4 horizontal plate body is used to press the eighth shaft segment 18, the A4 vertical plate body is used to abut against the outer end of the eighth shaft segment 18, and the A4 pressing block 28 is used to press the sixth shaft segment 16. Such a configuration enables the second component 02 and the third component 03 to be well assembled and connected with the fourth shaft segment 14, and can well prevent the fourth shaft segment 14, the sixth shaft segment 16, and the eighth shaft segment 18 from moving or deforming during welding. Moreover, such a clamping method enables the fifth component 10, the second component 02, and the third component 03 to be conveniently and quickly assembled or unassembled, thereby improving welding efficiency and welding quality. The A5 clamping part includes an A5 clamping block 25 and a movably installed A5 clamping assembly. The A5 clamping block 25 is provided with an A5 supporting groove for supporting the ninth rod segment 19. The A5 supporting groove is a V-shaped groove. The length of the A5 supporting groove is greater than the length of the ninth rod segment 19, and the groove depth of the A5 supporting groove is less than the diameter of the ninth rod segment 19. The A5 clamping assembly includes an A5 pressing plate 31 and an A5 pressing block 30. The A5 pressing plate 31 presses the ninth rod segment 19, and the A5 pressing block 30 is used to abut and position against the outer end of the ninth rod segment 19. Such an arrangement enables the first component 01 and the fourth component 04 to be well assembled and connected with the first shaft segment 11 and the fifth shaft segment 15, and can well solve the problem of movement or deformation of the fifth shaft segment 15, the seventh shaft segment and the ninth shaft segment 19 during welding. Moreover, such a clamping method enables the fifth component 10 and the first component 01 and the fourth component 04 to be conveniently and quickly assembled or unassembled, thereby improving welding efficiency and welding quality.

[0028] More specifically, the first clamping mechanism includes a B1 support block 32 for supporting the first plate body and a movably installed B1 pressing block 36 for pressing the first plate body, the B1 support block 32 is provided with a B1 positioning pin, and the B1 positioning pin is assembled and positioned with the waist-shaped hole provided on the first plate body; the second clamping mechanism includes a B2 support block 33 for supporting the second component 02 and a movably installed B2 pressing block 37 for pressing the second component 02, the B2 support block 33 is provided with a B21 positioning pin and a B22 positioning pin, and the B21 positioning pin and the B22 positioning pin are respectively assembled with two circular holes provided on the second component 02. The third clamping mechanism comprises a B3 support block 34 for supporting the third component 03 and a B3 pressing block 38 movably installed for pressing the third component 03, and the B3 support block 34 is provided with a B31 positioning pin and a B32 positioning pin, and the B31 positioning pin and the B32 positioning pin are respectively assembled and positioned with two circular holes provided on the third component 03; the fourth clamping mechanism comprises a B4 support block 35 for supporting the fourth component 04 and a B4 pressing block 39 for pressing the fourth component 04, and the B4 support block 35 is provided with a B41 positioning pin and a B42 positioning pin which are respectively assembled and positioned with the upper two circular holes of the fourth component 04. The A2 clamping assembly, the A4 clamping assembly, and the A5 clamping assembly are respectively installed on the A2 flip arm, the A4 flip arm, and the A5 flip arm, the B1 pressing block 36, the B2 pressing block 37, the B3 pressing block 38, and the B4 pressing block 39 are respectively installed on the B1 flip arm, the B2 flip arm, the B3 flip arm, and the B4 flip arm, the A2 flip arm, the A4 flip arm, the A5 flip arm and the B1 flip arm, the B2 flip arm, the B3 flip arm, and the B4 flip arm are all rotatably installed on the base 20, the A2 flip arm, the A4 flip arm, the A5 flip arm, the B2 flip arm, and the B3 flip arm are respectively adjusted to flip by the A2 cylinder, the A4 cylinder, the A5 cylinder, the B2 cylinder, and the B3 cylinder, and the B1 flip arm and the B4 flip arm are respectively manually adjusted to flip by the B1 operating handle and the B4 operating handle. The B1 flip arm and the B4 flip arm are clamped manually because the hole on the first component 01 is a waist-shaped hole. Therefore, if the first component 01 moves during welding, it needs to be adjusted after the movement. Since all cylinders of general clamps use a control switch to control their clamping and loosening, other components will change due to loosening during adjustment. However, this situation will not occur when manual adjustment is used, ensuring the reliability of welding and the convenience of adjustment.

[0029] In summary, the above-mentioned solution provided by the present invention can reliably realize the welding and clamping of the seat frame small assembly, ensure the welding quality and improve the welding efficiency, simplify the welding operation and reduce the production cost.

[0030] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A clamp for welding a vehicle seat frame, characterized in that: It includes a first clamping mechanism, a second clamping mechanism, a third clamping mechanism, a fourth clamping mechanism, and a fifth clamping mechanism which are respectively arranged on the base and clamp and fix the first component, the second component, the third component, the fourth component, and the fifth component; the second component, the third component, and the fourth component have the same structure; The first clamping mechanism, the second clamping mechanism, the third clamping mechanism, the fourth clamping mechanism, and the fifth clamping mechanism clamp the first component, the second component, the third component, the fourth component, and the fifth component respectively and put them in the following state A: State A is: the second component and the third component are located on the A side of the fifth component, the first component and the fourth component are located on the B side of the fifth component, the middle portion of the first shaft segment overlaps with one side of the first plate body and the overlapping portion is in a state capable of being welded, both ends of the fourth shaft segment are respectively assembled and connected in the assembly connection grooves on the second component and the third component and the connection portion is in a state capable of being welded, and the middle portion of the fourth shaft segment is assembled and connected in the assembly connection groove on the fourth component and the connection portion is in a state capable of being welded.

2. The fixture for welding a vehicle seat frame according to claim 1, characterized in that: The fifth clamping mechanism includes an A2 clamping portion for clamping the second shaft segment, an A3 clamping portion for clamping the fourth shaft segment between the sixth shaft segment and the second member, an A4 clamping portion for clamping the eighth shaft segment, and an A5 clamping portion for clamping the ninth shaft segment.

3. The fixture for welding a vehicle seat frame according to claim 2, characterized in that: The A2 clamping part comprises an A2 clamping block and a movably mounted A2 clamping assembly, and the A2 clamping block is provided with a supporting inclined surface for supporting the second rod shaft segment.

4. The fixture for welding a vehicle seat frame according to claim 3, characterized in that: The A2 clamping assembly includes an A2 pressure block for pressing the junction between the second rod segment and the fourth rod segment, and an A2 pressure plate composed of a folded plate body. One plate body portion of the A2 pressure plate is used to press the remaining segments of the second rod segment, and the side edge of the other plate body portion is positioned against the first rod segment. The A2 pressure plate is fixedly connected to the A2 pressure block through a connecting rod.

5. The fixture for welding a vehicle seat frame according to claim 2, characterized in that: The A3 clamping part comprises an A3 clamping block, an upper surface of the A3 clamping block is provided with a supporting groove, and the fourth rod section is arranged in the supporting groove.

6. The fixture for welding a vehicle seat frame according to claim 2, characterized in that: The A4 clamping part includes an A4 clamping block and a movably installed A4 clamping assembly, the A4 clamping block is provided with an A4 supporting groove for supporting the eighth rod segment, the A4 supporting groove is a U-shaped groove, the length of the A4 supporting groove is consistent with the length of the eighth rod segment, the A4 clamping assembly includes an A4 pressing plate and an A4 pressing block, the A4 pressing plate is a folded pressing plate, including an A4 horizontal plate body and an A4 vertical plate body, the A4 horizontal plate body is used to press the eighth rod segment, the A4 vertical plate body is used to abut against the outer end of the eighth rod segment, and the A4 pressing block is used to press the sixth rod segment.

7. The fixture for welding a vehicle seat frame according to claim 2, characterized in that: The A5 clamping part includes an A5 clamping block and a movably installed A5 clamping assembly. The A5 clamping block is provided with an A5 supporting groove for supporting the ninth rod segment. The A5 supporting groove is a V-shaped groove. The length of the A5 supporting groove is greater than the length of the ninth rod segment, and the groove depth of the A5 supporting groove is less than the diameter of the ninth rod segment. The A5 clamping assembly includes an A5 pressing plate and an A5 pressing block. The A5 pressing plate presses the ninth rod segment, and the A5 pressing block is used to abut and position against the outer end of the ninth rod segment.

8. The fixture for welding a vehicle seat frame according to claim 2, characterized in that: The first clamping mechanism includes a B1 support block for supporting the first plate body and a movably installed B1 pressing block for pressing the first plate body. The B1 support block is provided with a B1 positioning pin, which is assembled and positioned with a waist-shaped hole provided on the first plate body.

9. The fixture for welding a vehicle seat frame according to claim 2, characterized in that: The second clamping mechanism includes a B2 support block for supporting the second component and a B2 pressure block movably installed for pressing the second component, the B2 support block is provided with a B21 positioning pin and a B22 positioning pin, and the B21 positioning pin and the B22 positioning pin are respectively assembled and positioned with two circular holes provided on the second component; the third clamping mechanism includes a B3 support block for supporting the third component and a B3 pressure block movably installed for pressing the third component, the B3 support block is provided with a B31 positioning pin and a B32 positioning pin, and the B31 positioning pin and the B32 positioning pin are respectively assembled and positioned with the two circular holes provided on the third component; the fourth clamping mechanism includes a B4 support block for supporting the fourth component and a B4 pressure block for pressing the fourth component, the B4 support block is provided with a B41 positioning pin and a B42 positioning pin that are respectively assembled and positioned with the upper two circular holes of the fourth component.

10. The fixture for welding a vehicle seat frame according to claim 9, characterized in that: The A2 clamping assembly, the A4 clamping assembly, and the A5 clamping assembly are respectively installed on the A2 flip arm, the A4 flip arm, and the A5 flip arm; the B1 pressure block, the B2 pressure block, the B3 pressure block, and the B4 pressure block are respectively installed on the B1 flip arm, the B2 flip arm, the B3 flip arm, and the B4 flip arm; the A2 flip arm, the A4 flip arm, the A5 flip arm and the B1 flip arm, the B2 flip arm, the B3 flip arm, and the B4 flip arm are all rotatably installed on the base; the A2 flip arm, the A4 flip arm, the A5 flip arm, the B2 flip arm, and the B3 flip arm are respectively adjusted to flip by the A2 cylinder, the A4 cylinder, the A5 cylinder, the B2 cylinder, and the B3 cylinder; the B1 flip arm and the B4 flip arm are respectively manually adjusted to flip by the B1 operating handle and the B4 operating handle.

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