Numerical control laser processing equipment for clamp adjusting shim

Abstract

The invention discloses clamp adjusting gasket numerical control laser machining equipment, and belongs to the technical field of laser machining equipment.The clamp adjusting gasket numerical control laser machining equipment comprises a fixing base, a clamping mechanism, an adjusting part, a supporting part, a right-angle fixing base, a pressing part and a laser head, the fixing base is provided with the clamping mechanism for placing a machined part, and the fixing base is provided with the adjusting part; the top end of the adjusting piece is rotationally connected with one end of the bottom of the clamping mechanism, a supporting piece for supporting the other end of the clamping mechanism is arranged on the fixing base, a right-angle fixing base is fixed to the side edge of the fixing base, and a pressing piece for pressing and limiting the clamping mechanism is arranged on the right-angle fixing base. And the laser head is used for carrying out laser processing operation on the clamped and limited workpiece. The laser machining device has the advantages that on one hand, the machined parts of different types and sizes can be clamped and limited, on the other hand, the laser machining positions of the machined parts can be adjusted, and therefore laser machining operation can be conducted on different positions.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing equipment, in particular to numerically controlled laser processing equipment for clamp adjustment gaskets. Background Art

[0002] Laser processing uses the energy of light to reach a high energy density at the focal point after being focused by a lens, and relies on the photothermal effect for processing. Laser processing does not require tools, has a fast processing speed, and has small surface deformation, and can process various materials. Laser beams are used to perform various processing on materials, such as drilling, cutting, scribing, welding, heat treatment, etc.

[0003] When using existing CNC laser processing equipment, a fixture can only clamp and limit one type of workpiece, and can only perform laser processing operations on fixed positions, which limits its scope of application and has poor actual application effects. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention aims to provide a fixture adjustment gasket CNC laser processing device.

[0005] The technical solution of the present invention is as follows: a fixture adjustment gasket CNC laser processing equipment, comprising a fixed base, a clamping mechanism, an adjusting member, a supporting member, a right-angle fixing seat, a pressing member and a laser head, the fixed base being provided with a clamping mechanism for placing a workpiece, the fixed base being provided with an adjusting member, the top of the adjusting member being rotatably connected to one end of the bottom of the clamping mechanism, the fixed base being provided with a supporting member for supporting the other end of the clamping mechanism, a right-angle fixing seat being fixed on the side of the fixed base, the right-angle fixing seat being provided with a pressing member for pressing and limiting the clamping mechanism, and the laser head performing laser processing operations on the clamped and limited workpiece.

[0006] Preferably, the clamping mechanism comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are rotatably connected to each other, and right-angle notches are provided on opposite surfaces of one end of the upper clamping plate and the lower clamping plate.

[0007] Preferably, the upper clamping plate and the lower clamping plate are rotatably connected at the ends, a connecting hinge is provided between the ends of the upper clamping plate and the lower clamping plate, and arc-shaped protrusions are provided on the upper clamping plate and the lower clamping plate at the right-angle notch positions.

[0008] Preferably, when the upper clamping plate and the lower clamping plate are rotated to 180 degrees, the top surfaces of the upper clamping plate and the lower clamping plate are in the same plane. When the workpiece is subjected to laser processing, the upper clamping plate and the lower clamping plate support the workpiece at the same time, and the workpiece is pressed and limited by the pressing piece.

[0009] Preferably, the upper clamping plate and the lower clamping plate are rotatably connected in the middle, an extension block is fixed at the bottom of the upper clamping plate near the middle position, sliding round rods are fixed on both sides of the extension block, a limiting groove is provided through the middle position of the lower clamping plate, the width of the upper clamping plate is equal to the width of the limiting groove, a sliding connection groove is provided on the side of the limiting groove on the lower clamping plate, and the sliding connection groove is slidably connected to the sliding round rod.

[0010] Preferably, the upper clamping plate and the lower clamping plate are of equal length;

[0011] When the upper clamping plate is located directly above the lower clamping plate, the upper clamping plate and the lower clamping plate rotate around the sliding round rod, and the workpiece is clamped and limited by the upper clamping plate and the lower clamping plate;

[0012] When the upper clamping plate is offset and arranged above the lower clamping plate, the sliding round rod on the upper clamping plate slides in the sliding connection groove on the lower clamping plate, and the side edge of the workpiece is limited by the upper clamping plate.

[0013] Preferably, the adjusting member includes a first adjusting bolt and a first rotating connecting card, the first adjusting bolt is threadedly screwed on the fixed base, the top of the first adjusting bolt is connected to the lower clamping plate through the first rotating connecting card, and the first rotating connecting card is located at the bottom of the lower clamping plate near the side.

[0014] Preferably, the support member includes a second adjusting bolt and a supporting collar, the second adjusting bolt is threadedly screwed on the fixed base, the second adjusting bolt is sleeved with the supporting collar, and the bottom of the supporting collar is placed on the fixed base.

[0015] Preferably, the second adjusting bolt is smoothly arranged near the top, and the top of the second adjusting bolt is arranged as a hemispherical structure.

[0016] Preferably, the pressing part includes a third adjusting bolt, a second rotating connecting card and a pressing plate, the third adjusting bolt is threadedly screwed on the right-angle fixing seat, the bottom of the third adjusting bolt is connected to the pressing plate through the second rotating connecting card, and the pressing plate is configured as a flat plate-like structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. An adjusting member for adjusting the height of the clamping mechanism is provided at one end of the bottom of the clamping mechanism, and the clamping mechanism and the adjusting member are rotatably connected. A supporting member for supporting the position of the clamping mechanism after rotation is provided at the other end of the bottom of the clamping mechanism. A pressing member for pressing and limiting the clamping mechanism or the workpiece is also provided above the clamping mechanism. Through this structural setting, on the one hand, clamping and limiting can be performed for workpieces of different types and sizes, and on the other hand, the position of laser processing of the workpiece can be adjusted, so that laser processing operations can be performed at different positions, making it more applicable;

[0019] 2. The clamping mechanism includes a rotatable upper clamping plate and a lower clamping plate, which can be used for clamping operations on workpieces of different types and sizes. At the same time, when placing the workpiece, the openable space between the upper clamping plate and the lower clamping plate is large, which is convenient for installation operations. When positioning the workpiece, the workpiece or the upper clamping plate can be pressed and restricted by the pressing piece, thereby restricting the position of the workpiece, making the placement position of the workpiece more stable and the actual application effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0021] Figure 1 It is a structural schematic diagram of the fixture adjustment gasket CNC laser processing equipment of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the clamping mechanism of the present invention when it is tilted;

[0023] Figure 3 It is a schematic diagram of the structure of the clamping mechanism of the present invention when it is unfolded;

[0024] Figure 4 This is a schematic structural diagram of the clamping mechanism of Example 1 of the present invention;

[0025] Figure 5 An exploded view of the clamping mechanism of Example 2 of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the upper clamping plate and the lower clamping plate when they are connected in Example 2 of the present invention;

[0027] Figure 7 This is a schematic diagram of the result when the upper clamping plate and the lower clamping plate are misaligned in Example 2 of the present invention;

[0028] Figure 8 is a schematic structural diagram of a second adjusting bolt of the present invention;

[0029] Fig. 9 It is a schematic structural diagram of the pressing part of the present invention.

[0030] Explanations in the figure: 10. Fixed base; 20. Clamping mechanism; 21. Upper clamping plate; 22. Lower clamping plate; 23. Right-angle notch; 24. Connecting hinge; 25. Arc-shaped protrusion; 2011. Protruding block; 2012. Sliding round rod; 2021. Limiting groove; 2022. Sliding connecting groove; 30. Adjusting member; 31. First adjusting bolt; 32. First rotating connecting card; 40. Support member; 41. Second adjusting bolt; 42. Support collar; 50. Right-angle fixing seat; 60. Pressing member; 61. Third adjusting bolt; 62. Second rotating connecting card; 63. Pressing plate; 70. Laser head. DETAILED DESCRIPTION

[0031] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0032] Example 1

[0033] like Figure 1-2 As shown, the fixture adjustment gasket CNC laser processing equipment includes a fixed base 10, a clamping mechanism 20, an adjusting member 30, a supporting member 40, a right-angle fixing seat 50, a pressing member 60 and a laser head 70. The fixed base 10 is provided with a clamping mechanism 20 for placing a workpiece, the fixed base 10 is provided with an adjusting member 30, the top of the adjusting member 30 is rotatably connected to one end of the bottom of the clamping mechanism 20, the fixed base 10 is provided with a supporting member 40 for supporting the other end of the clamping mechanism 20, a right-angle fixing seat 50 is fixed on the side of the fixed base 10, the right-angle fixing seat 50 is provided with a pressing member 60 for pressing and limiting the clamping mechanism 20, and the laser head 70 performs laser processing operations on the clamped and limited workpiece.

[0034] Specifically, the fixed base 10 is provided with an adjusting member 30 with adjustable height. The adjusting member 30 and the clamping mechanism 20 are rotatably connected, so that the clamping mechanism 20 can be rotated at different angles. When the workpiece is limited by the two clamping mechanisms 20, the workpiece can be adjusted to a horizontal position on the one hand, and can be adjusted to an inclined state on the other hand, thereby facilitating laser processing operations on the workpiece. At the same time, it can be applied to workpieces of different shapes, structures and positions for laser processing operations, making it more applicable.

[0035] like Figure 4As shown, the clamping mechanism 20 includes an upper clamping plate 21 and a lower clamping plate 22 , which are rotatably connected to each other, and right-angle notches 23 are provided on opposite surfaces of one end of the upper clamping plate 21 and the lower clamping plate 22 .

[0036] Specifically, by setting the upper clamping plate 21 and the lower clamping plate 22, the workpiece can be placed between the upper clamping plate 21 and the lower clamping plate 22, and the workpiece can be clamped and limited by the upper clamping plate 21 and the lower clamping plate 22. The clamped upper clamping plate 21 is pressed by the pressing piece 60, and the lower clamping plate 22 is supported by the support piece 40, so that the upper clamping plate 21 and the lower clamping plate 22 have a better limiting effect on the workpiece.

[0037] like Figure 4 As shown, the upper clamping plate 21 and the lower clamping plate 22 are rotatably connected at the ends, a connecting hinge 24 is provided between the ends of the upper clamping plate 21 and the lower clamping plate 22, and an arc-shaped protrusion 25 is provided at the right-angle notch 23 on the upper clamping plate 21 and the lower clamping plate 22. Through the end rotation connection mode, the upper clamping plate 21 and the lower clamping plate 22 can be opened to a larger angle, thereby facilitating the placement operation of the workpiece, and at the same time, it can be suitable for the placement and clamping of larger workpieces, making it more applicable.

[0038] like Figure 3 As shown, when the upper clamping plate 21 and the lower clamping plate 22 are rotated to 180 degrees, the top surfaces of the upper clamping plate 21 and the lower clamping plate 22 are in the same plane. When the workpiece is subjected to laser processing, the upper clamping plate 21 and the lower clamping plate 22 support the workpiece at the same time, and the workpiece is pressed and limited by the pressing piece 60.

[0039] When the upper clamping plate 21 and the lower clamping plate 22 are rotated to 180 degrees, the placement area of ​​the workpiece can be increased, so that it is suitable for placing workpieces of larger volume. When the workpiece is placed on the top of the upper clamping plate 21 and the lower clamping plate 22, the position of the workpiece can be limited by the pressing member 60 by performing top pressing and limiting on the workpiece. Through this structural setting, its scope of use can be further improved, allowing more different types of workpieces to be laser processed.

[0040] Example 2

[0041] like Figure 1-2As shown, the fixture adjustment gasket CNC laser processing equipment includes a fixed base 10, a clamping mechanism 20, an adjusting member 30, a supporting member 40, a right-angle fixing seat 50, a pressing member 60 and a laser head 70. The fixed base 10 is provided with a clamping mechanism 20 for placing a workpiece, the fixed base 10 is provided with an adjusting member 30, the top of the adjusting member 30 is rotatably connected to one end of the bottom of the clamping mechanism 20, the fixed base 10 is provided with a supporting member 40 for supporting the other end of the clamping mechanism 20, a right-angle fixing seat 50 is fixed on the side of the fixed base 10, the right-angle fixing seat 50 is provided with a pressing member 60 for pressing and limiting the clamping mechanism 20, and the laser head 70 performs laser processing operations on the clamped and limited workpiece.

[0042] like Figure 5 As shown, the clamping mechanism 20 includes an upper clamping plate 21 and a lower clamping plate 22 , which are rotatably connected to each other, and right-angle notches 23 are provided on opposite surfaces of one end of the upper clamping plate 21 and the lower clamping plate 22 .

[0043] The upper clamping plate 21 and the lower clamping plate 22 are rotatably connected near the middle position, so that the upper clamping plate 21 and the lower clamping plate 2 can clamp and limit the workpiece, which is suitable for normal workpiece clamping and limiting; right-angle grooves 23 are provided on the opposite surfaces of one end of the upper clamping plate 21 and the lower clamping plate 22, so that a stepped structure is formed on the upper clamping plate 21 and the lower clamping plate 22, which can be suitable for laser processing operations of stepped workpieces, thereby further improving its scope of application.

[0044] like Figure 5 As shown, the upper clamping plate 21 and the lower clamping plate 22 are rotatably connected in the middle, a protruding block 2011 is fixed at the bottom of the upper clamping plate 21 near the middle position, and sliding round rods 2012 are fixed on both sides of the protruding block 2011. A limiting groove 2021 is provided through the middle position of the lower clamping plate 22, and the width of the upper clamping plate 21 is equal to the width of the limiting groove 2021. A sliding connection groove 2022 is provided on the side of the limiting groove 2021 on the lower clamping plate 22, and the sliding connection groove 2022 is slidably connected to the sliding round rod 2012.

[0045] Through this structural setting, on the one hand, relative rotation adjustment can be made between the upper clamping plate 21 and the lower clamping plate 22, and on the other hand, the upper clamping plate 21 can be slid on the lower clamping plate 22, so that a stepped structure is formed between the upper clamping plate 21 and the lower clamping plate 22. The workpiece is placed on the lower clamping plate 22, and the side of the workpiece is blocked and limited by the upper clamping plate 21, and the top of the workpiece is pressed and limited by the pressing piece 60, so that it is suitable for placing higher workpieces.

[0046] like Figure 6As shown, the lengths of the upper clamping plate 21 and the lower clamping plate 22 are equal; when the upper clamping plate 21 is located directly above the lower clamping plate 22, the upper clamping plate 21 and the lower clamping plate 22 rotate around the sliding round rod 2012, and the workpiece is clamped and limited by the upper clamping plate 21 and the lower clamping plate 22. Through this structural setting, the sliding round rod 2012 can be rotated at any position in the sliding connection groove 2022, so that the upper clamping plate 21 can rotate to different shapes relative to the lower clamping plate 22, so as to be suitable for clamping and limiting workpieces of different sizes, so that its application range is further improved;

[0047] like Figure 7 As shown, when the upper clamping plate 21 is offset and arranged above the lower clamping plate 22, the sliding round rod 2012 on the upper clamping plate 21 slides in the sliding connecting groove 2022 on the lower clamping plate 22, and the upper clamping plate 21 is used to limit the side of the workpiece. Through this structural setting, the upper clamping plate 21 can be located on the lower clamping plate 22 and slide, so that a stepped structure is formed between the upper clamping plate 21 and the lower clamping plate 22. On the one hand, large-volume stepped workpieces can be placed, and the position of the workpieces can be further restricted by the pressing piece 60. On the other hand, the workpieces can be placed on the lower clamping plate 22, and the side of the workpieces can be blocked and limited by the upper clamping plate 21, so that more different types of workpieces can be clamped and limited, further improving its scope of application.

[0048] Example 3

[0049] On the basis of Example 1 or Example 2, Figure 1 As shown, the adjusting member 30 includes a first adjusting bolt 31 and a first rotating connecting card 32. The first adjusting bolt 31 is threadedly screwed on the fixed base 10. The top of the first adjusting bolt 31 is connected to the lower clamping plate 22 through the first rotating connecting card 32. The first rotating connecting card 32 is located at the bottom of the lower clamping plate 22 near the side.

[0050] Specifically, the user rotates the first adjusting bolt 31 to adjust the position of the end of the first adjusting bolt 31 relative to the fixed base 10, thereby adjusting the height of the clamping mechanism 20 relative to the fixed base 10, which is suitable for clamping and limiting different types of workpieces. In addition, the first adjusting bolt 31 and the lower clamping plate 22 are connected by a first rotating connecting card 32, so that the lower clamping plate 22 can rotate around the first rotating connecting card 32, thereby facilitating the adjustment of the clamping mechanism 20 at different angles, that is, the workpiece can be adjusted at different angles.

[0051] like Figure 4As shown, the support member 40 includes a second adjusting bolt 41 and a supporting collar 42 . The second adjusting bolt 41 is threadedly screwed on the fixed base 10 . The supporting collar 42 is sleeved on the second adjusting bolt 41 . The bottom of the supporting collar 42 is placed on the fixed base 10 .

[0052] Specifically, the user rotates the second adjusting bolt 41 to adjust the position of the end of the second adjusting bolt 41 relative to the fixed base 10. After the clamping mechanism 20 clamps the limited workpiece, the second adjusting bolt 41 is used to support the bottom end of the clamping mechanism 20. This structure allows the clamping mechanism 20 to be supported and limited by the second adjusting bolt 41 no matter what angle the clamping mechanism 20 is rotated to, so that the position of the clamping mechanism 20 after placement is more stable.

[0053] A supporting collar 42 is sleeved on the second adjusting bolt 41, and the bottom of the supporting collar 42 is placed on the fixed base 10. Through this structural setting, the supporting area at the bottom of the clamping mechanism 20 can be increased, making the placement position of the clamping mechanism 20 more stable and having a better practical application effect.

[0054] like Figure 8 As shown, the second adjusting bolt 41 is smoothly arranged near the top position, and the top of the second adjusting bolt 41 is arranged as a hemispherical structure, so that the top of the second adjusting bolt 41 can better restrict the position of the bottom of the clamping mechanism 20, and can be applied to different angles of the clamping mechanism 20, with a wider range of applications.

[0055] like Fig. 9 As shown, the pressing part 60 includes a third adjusting bolt 61, a second rotating connecting card 62 and a pressing plate 63. The third adjusting bolt 61 is threadedly connected to the right-angle fixing seat 50. The bottom of the third adjusting bolt 61 is connected to the pressing plate 63 through the second rotating connecting card 62. The pressing plate 63 is set as a flat plate structure.

[0056] Specifically, the user rotates the third adjusting bolt 61, driving the pressing plate 63 set at the bottom of the third adjusting bolt 61 to adjust the position. The pressing plate 63 restricts the position of the workpiece or the clamping mechanism 20, thereby making the placement of the workpiece on the clamping mechanism 20 more stable and achieving better practical application effects.

[0057] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. Fixture adjustment gasket CNC laser processing equipment, characterized by: The invention comprises a fixed base (10), a clamping mechanism (20), an adjusting member (30), a supporting member (40), a right-angle fixing seat (50), a pressing member (60) and a laser head (70); the fixed base (10) is provided with a clamping mechanism (20) for placing a workpiece; the fixed base (10) is provided with an adjusting member (30); the top end of the adjusting member (30) is rotatably connected to the bottom end of the clamping mechanism (20); the fixed base (10) is provided with a supporting member (40) for supporting the other end of the clamping mechanism (20); a right-angle fixing seat (50) is fixed on the side of the fixed base (10); the right-angle fixing seat (50) is provided with a pressing member (60) for pressing and limiting the clamping mechanism (20); and the laser head (70) performs laser processing operations on the clamped and limited workpiece.

2. The fixture adjustment gasket CNC laser processing equipment according to claim 1, characterized in that: The clamping mechanism (20) comprises an upper clamping plate (21) and a lower clamping plate (22), wherein the upper clamping plate (21) and the lower clamping plate (22) are rotatably connected to each other, and right-angled notches (23) are provided on opposite surfaces at one end of the upper clamping plate (21) and the lower clamping plate (22).

3. The fixture adjustment gasket CNC laser processing equipment according to claim 2, characterized in that: The upper clamping plate (21) and the lower clamping plate (22) are rotatably connected at the ends, a connecting hinge (24) is provided between the ends of the upper clamping plate (21) and the lower clamping plate (22), and arc-shaped protrusions (25) are provided at the positions of the right-angle notches (23) on the upper clamping plate (21) and the lower clamping plate (22).

4. The fixture adjustment gasket CNC laser processing equipment according to claim 3 is characterized in that: When the upper clamping plate (21) and the lower clamping plate (22) are rotated to 180 degrees, the top surfaces of the upper clamping plate (21) and the lower clamping plate (22) are in the same plane. When laser processing is performed on the workpiece, the upper clamping plate (21) and the lower clamping plate (22) simultaneously support the workpiece, and the workpiece is pressed and limited by the pressing piece (60).

5. The fixture adjustment gasket CNC laser processing equipment according to claim 2, characterized in that: The upper clamping plate (21) and the lower clamping plate (22) are rotatably connected in the middle, a protruding block (2011) is fixed at the bottom of the upper clamping plate (21) near the middle, and sliding round rods (2012) are fixed on both sides of the protruding block (2011). A limiting groove (2021) is provided through the middle of the lower clamping plate (22), the width of the upper clamping plate (21) is equal to the width of the limiting groove (2021), and a sliding connection groove (2022) is provided on the side of the limiting groove (2021) on the lower clamping plate (22), and the sliding connection groove (2022) is slidably connected to the sliding round rod (2012).

6. The fixture adjustment gasket CNC laser processing equipment according to claim 5, characterized in that: The upper clamping plate (21) and the lower clamping plate (22) are of equal length; When the upper clamping plate (21) is located directly above the lower clamping plate (22), the upper clamping plate (21) and the lower clamping plate (22) rotate around the sliding round rod (2012), and the workpiece is clamped and limited by the upper clamping plate (21) and the lower clamping plate (22); When the upper clamping plate (21) is offset and arranged above the lower clamping plate (22), the sliding round rod (2012) on the upper clamping plate (21) slides in the sliding connection groove (2022) on the lower clamping plate (22), and the side edge of the workpiece is limited by the upper clamping plate (21).

7. The fixture adjustment gasket CNC laser processing equipment according to claim 4 or 6, characterized in that: The adjusting member (30) comprises a first adjusting bolt (31) and a first rotating connecting clamp (32); the first adjusting bolt (31) is threadedly screwed on the fixed base (10); the top of the first adjusting bolt (31) is connected to the lower clamping plate (22) via the first rotating connecting clamp (32); the first rotating connecting clamp (32) is located at the bottom of the lower clamping plate (22) near the side edge.

8. The fixture adjustment gasket CNC laser processing equipment according to claim 5, characterized in that: The support member (40) comprises a second adjusting bolt (41) and a supporting collar (42); the second adjusting bolt (41) is threadedly screwed onto the fixed base (10); the second adjusting bolt (41) is sleeved with the supporting collar (42); the bottom of the supporting collar (42) is placed on the fixed base (10).

9. The fixture adjustment gasket CNC laser processing equipment according to claim 8, characterized in that: The second adjusting bolt (41) is smoothly arranged near the top, and the top of the second adjusting bolt (41) is arranged in a hemispherical structure.

10. The fixture adjustment gasket CNC laser processing equipment according to claim 8, characterized in that: The pressing part (60) comprises a third adjusting bolt (61), a second rotating connecting clamp (62) and a pressing plate (63); the third adjusting bolt (61) is threadedly connected to the right-angle fixing seat (50); the bottom of the third adjusting bolt (61) is connected to the pressing plate (63) via the second rotating connecting clamp (62); and the pressing plate (63) is configured as a flat plate-shaped structure.

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