A neutral machine cover fixture structure

Abstract

The present invention discloses a centering hood fixture structure, which includes a tooling frame arranged symmetrically left and right. A left Z-direction positioning support block and a right Z-direction positioning support block are respectively vertically protruded downward on the left and right sides of the front part of the tooling frame; a left Z-direction positioning mechanism and a right Z-direction positioning mechanism are respectively vertically protruded downward on the left and right sides of the middle part of the tooling frame; a left XY-direction positioning mechanism and a right XY-direction positioning mechanism are respectively vertically protruded downward on the left and right sides of the rear part of the tooling frame. By adopting the centering hood fixture structure of the present invention, after the hood is installed, the left and right gap differences can be small, ensuring the centering of the hood assembly; at the same time, the dimension chain can be short, the Y-direction accuracy can be high, and it is less affected by the processing process, reducing the adjustment workload; moreover, the debugging in the quality cultivation process is convenient, the rework cost is low, the debugging efficiency is high, and the applicability is wide.

Description

Technical Field

[0001] The present invention relates to a fixture structure, and particularly to a centering hood fixture structure. Background Art

[0002] With the rapid development of the automotive industry, consumers have higher and higher requirements for the appearance of automobiles. The overall appearance of the vehicle directly affects consumers' evaluation of the vehicle. In addition to the styling design, the most important thing for the overall appearance of the vehicle is the gap and flushness matching. For the overall vehicle gap and flushness, in addition to controlling the dimensional tolerances of individual parts and the dimensional chain, the fixture design and the fixture positioning strategy formulation also need to be considered. The design concept of the fixture and the rationality of the positioning strategy play a very important role.

[0003] Currently, the following problems generally exist in the fixture design and positioning strategy of each vehicle manufacturer for the hood:

[0004] ① Select the left and right front shock absorber mounting seats as the main and secondary positioning holes;

[0005] ② From the single-piece sub-assembly of the left and right front shock absorbers to the assembly and adjustment line, at least 5 upper-piece workstations are passed through for welding, the dimensional chain is long, and the cumulative error is large;

[0006] ③ For the left-side positioning main positioning hole, with the left side as the reference, all tolerances are accumulated on the right side;

[0007] ④ After the hood is installed, the left side meets the product design requirements. Due to the problem of tolerance accumulation on the right side, it is not easy to control, resulting in uneven left and right gaps between the hood and the fender, and a large amount of adjustment work is required;

[0008] ⑤ When the tolerance accumulation is large, hard adjustment is usually used to ensure that the hood temporarily meets the same gap with the left and right fenders. However, after painting baking or after the vehicle leaves the factory and travels on the road for a period of time, after the stress of the hard adjustment is completely released, the centering of the hood rebounds to the state before adjustment again, seriously affecting consumers' evaluation of the vehicle. Summary of the Invention

[0009] The present invention aims at the drawbacks of the prior art and provides a centering hood fixture structure.

[0010] The centering hood fixture structure described in the present invention includes a tooling frame arranged symmetrically left and right. The left side and the right side of the front part of the tooling frame are respectively vertically and convexly provided with a left Z-direction positioning support block and a right Z-direction positioning support block;

[0011] The left side and the right side of the middle part of the tooling frame are respectively vertically and convexly provided with a left Z-direction positioning mechanism and a right Z-direction positioning mechanism;

[0012] On the left and right sides of the rear part of the tooling frame, a left XY-direction positioning mechanism and a right XY-direction positioning mechanism are respectively vertically protruded downward.

[0013] In the centering hood fixture structure of the present invention, the left Z-direction positioning support block includes a left vertical rod and a left horizontal rod extending vertically to the right from the end of the left vertical rod, and the left horizontal rod is fixedly arranged at the lower edge of the left side of the front part of the tooling frame;

[0014] The right Z-direction positioning support block includes a right vertical rod and a right horizontal rod extending vertically to the left from the end of the right vertical rod, and the right horizontal rod is fixedly arranged at the lower edge of the right side of the front part of the tooling frame.

[0015] In the centering hood fixture structure of the present invention, the left Z-direction positioning mechanism includes a left connecting rod protruding downward from the lower edge of the left side of the middle part of the tooling frame, and a left Z-direction support block is arranged at the bottom end of the left connecting rod;

[0016] A left-side flipping mechanism extending to the right is further connected and arranged at the bottom end of the left connecting rod, a leftward bending connecting rod is connected and arranged downward at the end of the left-side flipping mechanism, and a left Z-direction flipping clamping block is arranged on the upper edge of the end of the leftward bending connecting rod;

[0017] The right Z-direction positioning mechanism includes a right connecting rod protruding downward from the lower edge of the right side of the middle part of the tooling frame, and a right Z-direction support block is arranged at the bottom end of the right connecting rod;

[0018] A right-side flipping mechanism extending to the left is further connected and arranged at the bottom end of the right connecting rod, a rightward bending connecting rod is connected and arranged downward at the end of the right-side flipping mechanism, and a right Z-direction flipping clamping block is arranged on the upper edge of the end of the rightward bending connecting rod.

[0019] In the centering hood fixture structure of the present invention, the left Z-direction support block includes a left vertical rod and a left horizontal rod extending vertically backward from the end of the left vertical rod, and the left horizontal rod is fixedly arranged at the lower edge of the bottom end of the left connecting rod;

[0020] The right Z-direction support block includes a right vertical rod and a right horizontal rod extending vertically backward from the end of the right vertical rod, and the right horizontal rod is fixedly arranged at the lower edge of the bottom end of the right connecting rod.

[0021] In the centering hood fixture structure of the present invention, the left Z-direction flipping clamping block includes a left vertical rod and a left horizontal rod extending vertically to the right from the bottom end of the left vertical rod, and the left horizontal rod is fixedly arranged at the upper edge of the end of the leftward bending connecting rod;

[0022] The right Z - direction flipping and clamping block includes a right vertical rod and a right horizontal rod extending vertically leftward from the bottom end of the right vertical rod, and the right horizontal rod is fixedly arranged on the upper edge of the end of the right - bending connecting rod.

[0023] In the centering machine - cover fixture structure of the present invention, the left XY - direction positioning mechanism includes a left connecting rod protruding downward from the left lower edge of the rear part of the tooling frame, and a left X - direction support block is arranged at the bottom end of the left connecting rod;

[0024] A right - flipping mechanism is arranged at the lower part of the left connecting rod, and the left X - direction flipping and clamping block is arranged through a left - bending connecting rod by means of the right - flipping mechanism;

[0025] A left - flipping mechanism is arranged at the lower part of the left connecting rod, and the left Y - direction flipping and clamping block is arranged through a lower - direction connecting rod by means of the left - flipping mechanism;

[0026] The right XY - direction positioning mechanism includes a right connecting rod protruding downward from the right lower edge of the rear part of the tooling frame, and a right X - direction support block is arranged at the bottom end of the right connecting rod;

[0027] A left - flipping mechanism is arranged at the lower part of the right connecting rod, and the right X - direction flipping and clamping block is arranged through a right - bending connecting rod by means of the left - flipping mechanism;

[0028] A right - flipping mechanism is arranged at the lower part of the right connecting rod, and the right Y - direction flipping and clamping block is arranged through a lower - direction connecting rod by means of the right - flipping mechanism.

[0029] In the centering machine - cover fixture structure of the present invention, the left X - direction support block includes a left horizontal rod protruding forward, and a left cross - rod protruding vertically leftward at the rear end of the left horizontal rod, and the left cross - rod is fixedly arranged on the front - side outer wall of the bottom end of the left connecting rod;

[0030] The right X - direction support block includes a right horizontal rod protruding forward, and a right cross - rod protruding vertically rightward at the rear end of the right horizontal rod, and the right cross - rod is fixedly arranged on the front - side outer wall of the bottom end of the right connecting rod.

[0031] In the centering machine - cover fixture structure of the present invention, the left X - direction flipping and clamping block includes a left horizontal rod protruding backward, and a left cross - rod protruding vertically rightward at the front end of the left horizontal rod, and the left cross - rod is fixedly arranged on the rear - side outer wall of the end of the left - bending connecting rod;

[0032] The right X - direction flipping and clamping block includes a right horizontal rod protruding backward, and a right cross - rod protruding vertically leftward at the front end of the right horizontal rod, and the right cross - rod is fixedly arranged on the rear - side outer wall of the end of the right - bending connecting rod.

[0033] In the centering hood fixture structure of the present invention, the left Y-direction flipping clamping block includes a left flat rod protruding rightward. The left end of the left flat rod has a left vertical rod protruding vertically upward, and the left vertical rod is fixedly arranged on the right outer wall of the bottom end of the lower connecting rod.

[0034] The right Y-direction flipping clamping block includes a right flat rod protruding leftward. The right end of the right flat rod has a right vertical rod protruding vertically upward, and the right vertical rod is fixedly arranged on the left outer wall of the bottom end of the lower connecting rod.

[0035] Adopting the centering hood fixture structure of the present invention can make the left and right clearances have small differences after the hood is installed, ensuring the centering of the hood assembly. At the same time, it can make the dimension chain short, with high precision in the Y direction, less affected by the processing process, reducing the adjustment workload. Moreover, the debugging in the quality cultivation process is convenient, the rework cost is low, the debugging efficiency is high, and the applicability is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram of the centering hood fixture structure of the present invention;

[0037] Figure 2 is a schematic diagram of the left Z-direction positioning mechanism in the centering hood fixture structure of the present invention;

[0038] Figure 3 is a schematic diagram of the left XY-direction positioning mechanism in the centering hood fixture structure of the present invention;

[0039] Figure 4 is an application schematic diagram of the centering hood fixture structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0040] The following further elaborates on the present invention with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0041] As shown in Figure 1 、 Figure 2 、 Figure 3 , the centering hood fixture structure of the present invention includes a tooling frame 1 arranged symmetrically left and right. The left side and the right side of the front part of the tooling frame 1 are respectively vertically protruded downward with a left Z-direction positioning support block 8 and a right Z-direction positioning support block 7. The left side and the right side of the middle part of the tooling frame 1 are respectively vertically protruded downward with a left Z-direction positioning mechanism 4 and a right Z-direction positioning mechanism 3. The left side and the right side of the rear part of the tooling frame are respectively vertically protruded downward with a left XY-direction positioning mechanism 6 and a right XY-direction positioning mechanism 5.

[0042] Specifically, the left Z - direction positioning support block 8 includes a left vertical rod 82 and a left horizontal rod 81 extending vertically to the right from the end of the left vertical rod 82, and the left horizontal rod 81 is fixedly arranged at the lower edge 83 on the left side of the front part of the tooling frame 1. The right Z - direction positioning support block 7 is arranged symmetrically with the left Z - direction positioning support block 8 about the left - right direction, that is, the right Z - direction positioning support block 7 includes a right vertical rod and a right horizontal rod extending vertically to the left from the end of the right vertical rod, and the right horizontal rod is fixedly arranged at the lower edge on the right side of the front part of the tooling frame.

[0043] The left Z - direction positioning mechanism 4 includes a left connecting rod 41 protruding downward from the lower edge on the left side of the middle part of the tooling frame 1. A left Z - direction support block 45 is arranged at the bottom end of the left connecting rod 41. A left - side flipping mechanism 42 extending to the right is also connected and arranged at the bottom end of the left connecting rod 41 (the left - side flipping mechanism 42 includes a support body 422 fixedly arranged with the left connecting rod 41. A pivot shaft 421 is arranged on the support body 422, and other components can be connected through the pivot shaft 421 to realize the flipping of the components. It should be noted that the principles and compositions of other flipping mechanisms in this embodiment are the same as those of the left - side flipping mechanism 42, so they will not be specifically described in detail in the following embodiments). The end of the left - side flipping mechanism 42 is connected downward to a left - bending connecting rod 43, and a left Z - direction flipping and clamping block 44 is arranged on the upper edge 443 of the end of the left - bending connecting rod 43.

[0044] Symmetrically with the aforementioned left Z - direction positioning mechanism 4 about the left - right direction, the right Z - direction positioning mechanism includes a right connecting rod protruding downward from the lower edge on the right side of the middle part of the tooling frame. A right Z - direction support block is arranged at the bottom end of the right connecting rod; a right - side flipping mechanism extending to the left is also connected and arranged at the bottom end of the right connecting rod. The end of the right - side flipping mechanism is connected downward to a right - bending connecting rod, and a right Z - direction flipping and clamping block is arranged on the upper edge of the end of the right - bending connecting rod.

[0045] In the present invention, the left Z - direction support block 45 specifically includes a left vertical rod 451 and a left horizontal rod 452 extending vertically backward from the end of the left vertical rod 451, and the left horizontal rod 452 is fixedly arranged at the lower edge 453 at the bottom end of the left connecting rod 41. Symmetrically with the aforementioned left Z - direction support block 45 about the left - right direction, the right Z - direction support block includes a right vertical rod and a right horizontal rod extending vertically backward from the end of the right vertical rod, and the right horizontal rod is fixedly arranged at the lower edge at the bottom end of the right connecting rod.

[0046] In the present invention, the left Z-direction flipping clamping block 44 specifically includes a left vertical rod 441 and a left horizontal rod 442 extending vertically to the right from the bottom end of the left vertical rod 441. The left horizontal rod 442 is fixedly arranged on the upper edge 443 of the end of the leftward bending connecting rod 43. Symmetrically arranged left and right with the left Z-direction flipping clamping block 44, the right Z-direction flipping clamping block includes a right vertical rod and a right horizontal rod extending vertically to the left from the bottom end of the right vertical rod. The right horizontal rod is fixedly arranged on the upper edge of the end of the rightward bending connecting rod.

[0047] In the present invention, the left XY-direction positioning mechanism 6 specifically includes a left connecting rod 61 protruding downward from the left lower edge of the rear part of the tooling frame 1. A left X-direction support block 67 is arranged at the bottom end of the left connecting rod 61. A rightward flipping mechanism 62 is arranged at the lower part of the left connecting rod 61, and the rightward flipping mechanism 62 sets a left X-direction flipping clamping block 64 through a leftward bending connecting rod 63. A leftward flipping mechanism 68 is arranged at the lower part of the left connecting rod 61, and the leftward flipping mechanism 68 sets a left Y-direction flipping clamping block 65 through a downward connecting rod 66. Symmetrically arranged left and right with the left XY-direction positioning mechanism 6, the right XY-direction positioning mechanism includes a right connecting rod protruding downward from the right lower edge of the rear part of the tooling frame. A right X-direction support block is arranged at the bottom end of the right connecting rod; a leftward flipping mechanism is arranged at the lower part of the right connecting rod, and the leftward flipping mechanism sets a right X-direction flipping clamping block through a rightward bending connecting rod; a rightward flipping mechanism is arranged at the lower part of the right connecting rod, and the rightward flipping mechanism sets a right Y-direction flipping clamping block through a downward connecting rod.

[0048] Specifically, the left X-direction support block 67 includes a left horizontal rod 671 protruding forward. The rear end of the left horizontal rod 671 has a left cross bar 672 protruding vertically to the left, and the left cross bar 672 is fixedly arranged at the front side outer wall of the bottom end of the left connecting rod 61. Symmetrically arranged left and right with the left X-direction support block 67, the right X-direction support block includes a right horizontal rod protruding forward. The rear end of the right horizontal rod has a right cross bar protruding vertically to the right, and the right cross bar is fixedly arranged at the front side outer wall of the bottom end of the right connecting rod.

[0049] The left X-direction flipping clamping block 64 includes a left horizontal rod 641 protruding backward. The front end of the left horizontal rod 641 has a left cross bar 642 protruding vertically to the right, and the left cross bar 642 is fixedly arranged at the rear side outer wall 643 of the end of the leftward bending connecting rod 63. Symmetrically arranged left and right with the left X-direction flipping clamping block 64, the right X-direction flipping clamping block includes a right horizontal rod protruding backward. The front end of the right horizontal rod has a right cross bar protruding vertically to the left, and the right cross bar is fixedly arranged at the rear side outer wall of the end of the rightward bending connecting rod.

[0050] The left Y-direction flipping and clamping block 65 includes a left flat rod 651 protruding rightward. The left end of the left flat rod 651 has a left vertical rod 652 protruding vertically upward, and the left vertical rod 652 is fixedly arranged at the right outer wall of the bottom end of the lower connecting rod 66. Symmetrically arranged left and right with the left Y-direction flipping and clamping block 65, the right Y-direction flipping and clamping block includes a right flat rod protruding leftward. The right end of the right flat rod has a right vertical rod protruding vertically upward, and the right vertical rod is fixedly arranged at the left outer wall of the bottom end of the lower connecting rod.

[0051] Figure 4 The figure shows an application schematic diagram of the centering hood fixture structure of the present invention. As Figure 4 shown, in specific applications, the N-2-1 positioning principle is used for the hood, that is, 4 Z-direction positionings, 2 X-direction positionings, and 1 Y-direction positioning are ensured for the hood, so that the fixture of the present invention is fixed on the vehicle body.

[0052] Among them, the right Z-direction positioning support block 7 and the left Z-direction positioning support block 8 are respectively fitted to the Z-direction planes of the corresponding components at the end of the hood.

[0053] The left Z-direction support block 45 in the left Z-direction positioning mechanism 4 is fitted to the Z-direction plane of the corresponding component and clamps the left Z-direction flipping and clamping block 44. Similarly, the right Z-direction positioning mechanism 3 is also processed in the same manner as the aforementioned left Z-direction positioning mechanism 4.

[0054] Then, the left X-direction support block 67 and the left X-direction flipping and clamping block 64 in the left XY-direction positioning mechanism 6 are positioned. Similarly, the right XY-direction positioning mechanism 5 is also processed in the same manner as the aforementioned left XY-direction positioning mechanism 6 to ensure the X-direction fixation of the hood fixture of the present invention.

[0055] Then, the left Y-direction flipping and clamping block 65 in the left XY-direction positioning mechanism 6 and the right Y-direction flipping and clamping block in the right XY-direction positioning mechanism 5 are positioned in the Y direction. This positioning method can ensure the centering positioning of the hood fixture of the present invention in the Y direction.

[0056] In the centering hood fixture structure of the present invention, the Z-direction positioning is realized by the Z-direction positioning support block, the Z-direction support block and the Z-direction flipping and clamping block, ensuring the overall Z-direction fixation of the hood tooling. The X-direction positioning is realized by the X-direction support block and the X-direction flipping and clamping block, ensuring the X-direction fixation of the hood tooling. The Y-direction positioning is realized by the Y-direction flipping and clamping block. This positioning method can ensure the centering positioning in the Y direction and avoid the tolerance accumulation on one side.

[0057] By adopting the centering hood fixture structure of the present invention, after the hood is installed, the left and right gap differences can be small, ensuring the centering of the hood assembly; at the same time, the dimension chain can be short, with high precision in the Y direction and little influence from the processing process, reducing the adjustment workload; moreover, the debugging in the quality cultivation process is convenient, with low rework cost, high debugging efficiency, and wide applicability.

[0058] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A neutral machine cover fixture structure, including a tooling frame arranged symmetrically left and right, characterized in that, On the left and right sides of the front part of the tooling frame, a left Z-direction positioning support block and a right Z-direction positioning support block are respectively vertically protruded downward; On the left and right sides of the middle part of the tooling frame, a left Z-direction positioning mechanism and a right Z-direction positioning mechanism are respectively vertically protruded downward; On the left and right sides of the rear part of the tooling frame, a left XY-direction positioning mechanism and a right XY-direction positioning mechanism are respectively vertically protruded downward; Among them, the left XY-direction positioning mechanism includes a left connecting rod protruding downward from the lower edge of the left side of the rear part of the tooling frame, and a left X-direction support block is arranged at the bottom end of the left connecting rod; A rightward flipping mechanism is arranged at the lower part of the left connecting rod, and a left X-direction flipping clamping block is arranged through a leftward bent connecting rod by the rightward flipping mechanism; A leftward flipping mechanism is arranged at the lower part of the left connecting rod, and a left Y-direction flipping clamping block is arranged through a downward connecting rod by the leftward flipping mechanism; The left Y-direction flipping clamping block includes a left flat rod protruding rightward, and a left vertical rod protruding vertically upward at the left end of the left flat rod, and the left vertical rod is fixedly arranged on the right outer wall of the bottom end of the downward connecting rod; The right XY-direction positioning mechanism includes a right connecting rod protruding downward from the lower edge of the right side of the rear part of the tooling frame, and a right X-direction support block is arranged at the bottom end of the right connecting rod; A leftward flipping mechanism is arranged at the lower part of the right connecting rod, and a right X-direction flipping clamping block is arranged through a rightward bent connecting rod by the leftward flipping mechanism; A rightward flipping mechanism is arranged at the lower part of the right connecting rod, and a right Y-direction flipping clamping block is arranged through a downward connecting rod by the rightward flipping mechanism; The right Y-direction flipping clamping block includes a right flat rod protruding leftward, and a right vertical rod protruding vertically upward at the right end of the right flat rod, and the right vertical rod is fixedly arranged on the left outer wall of the bottom end of the downward connecting rod.

2. The centering hood fixture structure according to claim 1, characterized in that, The left Z-direction positioning support block includes a left vertical rod and a left flat rod extending vertically rightward from the end of the left vertical rod, and the left flat rod is fixedly arranged on the lower edge of the left side of the front part of the tooling frame; The right Z-direction positioning support block includes a right vertical rod and a right flat rod extending vertically leftward from the end of the right vertical rod, and the right flat rod is fixedly arranged on the lower edge of the right side of the front part of the tooling frame.

3. The centering hood fixture structure according to claim 1, characterized in that, The left Z-direction positioning mechanism includes a left connecting rod protruding downward from the lower edge of the left side of the middle part of the tooling frame, and a left Z-direction support block is arranged at the bottom end of the left connecting rod; A rightward left-side flipping mechanism is further connected and arranged at the bottom end of the left connecting rod, a leftward bent connecting rod is downwardly connected to the end of the left-side flipping mechanism, and a left Z-direction flipping clamping block is arranged on the upper edge of the end of the leftward bent connecting rod; The right Z-direction positioning mechanism includes a right connecting rod protruding downward from the lower edge of the right side of the middle part of the tooling frame, and a right Z-direction support block is arranged at the bottom end of the right connecting rod; A leftward right-side flipping mechanism is further connected and arranged at the bottom end of the right connecting rod, a rightward bent connecting rod is downwardly connected to the end of the right-side flipping mechanism, and a right Z-direction flipping clamping block is arranged on the upper edge of the end of the rightward bent connecting rod.

4. The centering machine cover fixture structure according to claim 3, characterized in that, The left Z-direction support block includes a left vertical rod and a left horizontal rod extending vertically backward from the end of the left vertical rod, and the left horizontal rod is fixedly arranged on the lower edge of the bottom end of the left connecting rod; The right Z-direction support block includes a right vertical rod and a right horizontal rod extending vertically backward from the end of the right vertical rod, and the right horizontal rod is fixedly arranged on the lower edge of the bottom end of the right connecting rod.

5. The centering machine cover fixture structure according to claim 3, wherein, The left Z-direction flipping and clamping block includes a left vertical rod and a left horizontal rod extending vertically to the right from the bottom end of the left vertical rod, and the left horizontal rod is fixedly arranged on the upper edge of the end of the leftward bent connecting rod; The right Z-direction flipping and clamping block includes a right vertical rod and a right horizontal rod extending vertically to the left from the bottom end of the right vertical rod, and the right horizontal rod is fixedly arranged on the upper edge of the end of the rightward bent connecting rod.

6. The centering machine cover fixture structure according to claim 1, characterized in that The left X-direction support block includes a left horizontal rod protruding forward, and the rear end of the left horizontal rod has a left crossbar protruding vertically to the left, and the left crossbar is fixedly arranged on the front outer wall of the bottom end of the left connecting rod; The right X-direction support block includes a right horizontal rod protruding forward, and the rear end of the right horizontal rod has a right crossbar protruding vertically to the right, and the right crossbar is fixedly arranged on the front outer wall of the bottom end of the right connecting rod.

7. The centering machine cover fixture structure according to claim 1, characterized in that, The left X-direction flipping and clamping block includes a left horizontal rod protruding backward, and the front end of the left horizontal rod has a left crossbar protruding vertically to the right, and the left crossbar is fixedly arranged on the rear outer wall of the end of the leftward bent connecting rod; The right X-direction flipping and clamping block includes a right horizontal rod protruding backward, and the front end of the right horizontal rod has a right crossbar protruding vertically to the left, and the right crossbar is fixedly arranged on the rear outer wall of the end of the rightward bent connecting rod.

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