Aluminum profile straightening device

Abstract

The utility model discloses an aluminum profile straightening device, which relates to the technical field of aluminum profiles and has the technical key points that the aluminum profile straightening device comprises a bottom plate and two supporting legs fixedly arranged on the bottom surface of the bottom plate, and a fixing mechanism and a straightening mechanism are arranged above the bottom plate; the straightening mechanism is located above the fixing mechanism. The straightening mechanism comprises a straightening part and a lifting part; the aluminum profile straightening device has the technical effects that bent aluminum profiles can be straightened by arranging the straightening mechanism, and the aluminum profiles with different widths can be straightened by arranging the adjusting assembly during straightening; adjustment can be conducted according to aluminum profiles with different widths by controlling the two sliding sleeves to move front and back correspondingly, the effect is better when the aluminum profiles are straightened, pits are prevented from appearing on the surfaces of the aluminum profiles after straightening is completed, no gap exists between the two sliding sleeves by arranging a pressing plate, and the machining precision is improved. And the effect is better when the aluminum profile is straightened.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum profiles, in particular to an aluminum profile straightening device. Background Art

[0002] Aluminum products are made of aluminum and other alloy elements. Usually, they are first processed into castings, forgings, foils, plates, strips, tubes, rods, profiles, etc., and then processed by cold bending, sawing, drilling, assembly, coloring and other processes. The main metal element is aluminum, and some alloy elements are added to improve the performance of aluminum. During the processing of existing aluminum, it is easy to bend and deform the aluminum, and it needs to be straightened;

[0003] China Patent Network has published an aluminum profile straightening device, with publication number CN210023324U, which includes a box body, four support rods are welded at both ends of the upper surface of the box body, and the support rods are grouped in pairs. A fixing plate is welded in the middle of the support rods in the same group, and a support plate is welded between the ends of the support rods away from the box body. A straightening device is installed under the support plate, a fixing device is installed on the upper surface of the box body, and a cleaning device is installed on the box body. The utility model has straightening function and cleaning function.

[0004] The above-mentioned device straightens the aluminum profile by controlling the left and right movement of the pressing block when straightening the aluminum profile. However, the pressing block cannot be adjusted according to the width of the aluminum profile when straightening the aluminum profile. When straightening an aluminum profile that is wider than the pressing block, pits will appear on the surface of the aluminum profile, and the straightening process needs to be repeated, resulting in reduced efficiency. Therefore, an aluminum profile straightening device is proposed. Utility Model Content

[0005] Technical Solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aluminum profile straightening device, comprising a bottom plate and two supporting legs fixedly arranged on the bottom surface of the bottom plate, wherein a fixing mechanism and a straightening mechanism are arranged above the bottom plate;

[0007] The straightening mechanism is located above the fixing mechanism;

[0008] The straightening mechanism comprises a straightening part and a lifting part;

[0009] The straightening part is located below the lifting part;

[0010] The straightening part includes a moving block and an adjusting assembly, and the lifting part includes an electric telescopic rod and a lifting plate;

[0011] The adjusting component is located on the bottom surface of the moving block, and the adjusting component includes a fixed block and two sliding sleeves. A connecting block is fixedly arranged on the bottom surface of the moving block. The bottom surface of the connecting block is fixedly connected to the top surface of the fixed block. The surface of the fixed block is respectively fixedly connected to the bottom surfaces of the two sliding sleeves. Two sliding grooves are respectively provided on the bottom surfaces of the two sliding sleeves, and pressure plates are slidably arranged on the inner walls of the two sliding grooves.

[0012] Preferably, the fixing mechanism includes two clamping plates, the bottom surfaces of the two clamping plates are slidably connected to the top surface of the bottom plate, the top surface of the bottom plate is penetrated by a through groove, and two control blocks are slidably arranged on the inner wall of the through groove, and the top surfaces of the two control blocks are respectively fixedly connected to the bottom surfaces of the two clamping plates, and a double-axis threaded rod is arranged inside the slide groove through a bearing seat for rotation, and the front side of the double-axis threaded rod successively penetrates the back sides of the two control blocks and extends to the front of the front control block, and a first motor is fixedly arranged on the front side of the bottom plate, and the back side of the output end of the first motor penetrates the front side of the bottom plate and extends to the inner side of the bottom plate, and the back side of the output end of the first motor is fixedly connected to the front side of the double-axis threaded rod. By providing a fixing mechanism, the aluminum profile can be fixed when straightening, so that it is more stable during straightening, and by controlling the two clamping plates to move synchronously when fixing the aluminum profile, the aluminum profile can be positioned during clamping, so that the straightening effect is better.

[0013] Preferably, a fixing frame is fixedly provided on the back side of the base plate, a sliding rail is fixedly provided on the bottom surface of the fixing frame, two sliding blocks are slidingly sleeved on the surface of the sliding rail, the bottom surfaces of the two sliding blocks are respectively hinged to two connecting plates, and the bottom surfaces of the two connecting plates are hinged to the top surface of the lifting plate. By providing two sliding blocks, two connecting plates and a sliding rail, the lifting plate can be made more stable when moving up and down.

[0014] Preferably, a mounting plate is fixedly provided on the right side of the lifting plate, a second motor is fixedly provided on the right side of the mounting plate, a left side of the output end of the second motor penetrates through the right side of the mounting plate and extends to the right side of the mounting plate, a reciprocating threaded rod is fixedly provided on the left side of the output end of the second motor, a thread on the left side of the reciprocating threaded rod penetrates through the right side of the moving block and extends to the left side of the moving block, when the second motor is turned on, the rotation of the output end of the second motor can drive the reciprocating threaded rod to rotate, when the reciprocating threaded rod rotates, the two sliding sleeves can be moved back and forth left and right through the moving block, and the aluminum profile can be straightened when the two sliding sleeves move back and forth left and right.

[0015] Preferably, two support plates are fixedly provided on the right sides of the two sliding sleeves, and elastic parts are fixedly provided on the adjacent sides of the two support plates. Two wedge-shaped grooves are respectively provided on the inner walls of the two through grooves, and two wedge blocks are slidably provided on the inner walls of the two wedge grooves. The bottom surfaces of the two wedge blocks are fixedly connected to the top surface of the pressure plate, and the two sliding sleeves can be brought close to each other through the elastic parts.

[0016] Preferably, a threaded rod is fixedly provided on the left side of the fixed block, and a control plate is penetrated on the left side of the threaded rod and extends to the left side of the control plate, a nut is rotatably provided on the left side of the control plate through the second bearing seat, and the inner side of the nut is threadedly connected to the surface of the threaded rod, and a first extrusion block is fixedly provided on the right side of the control plate, and two second extrusion blocks are fixedly provided on the left sides of the two sliding sleeves, and the inclined surfaces of the first extrusion blocks are slidingly connected with the inclined surfaces of the two second extrusion blocks respectively, and a limiting rod is fixedly provided on the left side of the fixed block, and the left side of the limiting rod slides through the control plate and extends to the left side of the control plate, and the nut is manually controlled to rotate, and when the nut rotates, the control plate can be moved left and right by the threaded rod, and when the control plate moves left and right, the two sliding sleeves can be moved forward and backward respectively by the elastic member, so that the two sliding sleeves can be adjusted according to the width of the aluminum profile.

[0017] Preferably, the top surface of the fixed frame is fixedly connected to the bottom surface of the electric telescopic rod, the bottom surface of the output end of the electric telescopic rod penetrates the top surface of the fixed frame and extends to the inner side of the fixed frame, the bottom surface of the output end of the electric telescopic rod is fixedly connected to the top surface of the lifting plate, and when the electric telescopic rod is turned on, the output end of the electric telescopic rod can be extended and retracted to drive the lifting plate to move up and down, and when the lifting plate moves up and down, the two sliding sleeves can be driven to move.

[0018] Preferably, two fixing plates are fixedly provided on the top surface of the base plate, and two groups of telescopic connecting rods are fixedly provided on one side of the cameras of the two fixing plates respectively. The sides close to each other of the two groups of telescopic connecting rods are fixedly connected to the sides far from each other of the two clamping plates respectively, and two groups of clamping blocks are fixedly provided on the sides close to each other of the two clamping plates respectively. By providing two groups of telescopic connecting rods, the stability can be better when the two clamping plates move.

[0019] Beneficial Effects

[0020] Compared with the prior art, the utility model provides an aluminum profile straightening device, which has the following beneficial effects:

[0021] 1. The straightening mechanism can be used to straighten the bent aluminum profiles, and the adjustment component can be used to straighten the aluminum profiles of different widths. The two sliding sleeves can be controlled to move forward and backward respectively to adjust according to the aluminum profiles of different widths, so that the straightening effect of the aluminum profiles is better, and pits can be avoided on the surface of the aluminum profiles after the straightening is completed. The pressure plate can prevent the gap between the two sliding sleeves, so that the straightening effect of the aluminum profiles is better. The lifting part can adjust the height of the two sliding sleeves, so that the aluminum profiles of different heights can be straightened, thereby reducing the use restrictions. The two sliding blocks, two connecting plates and the slide rail can make the lifting plate more stable when moving up and down.

[0022] 2. By providing a fixing mechanism, the aluminum profile can be fixed when it is straightened, making it more stable during straightening. By controlling the synchronous movement of the two clamping plates when fixing the aluminum profile, the aluminum profile can be positioned during clamping, making the straightening effect better. By providing two sets of telescopic connecting rods, the stability can be better when the two clamping plates move. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a main perspective schematic diagram of the utility model;

[0024] Figure 2 It is a partial three-dimensional schematic diagram of the right side of the utility model;

[0025] Figure 3 It is a partial three-dimensional schematic diagram of a bottom-up cross section of the utility model;

[0026] Figure 4 This is a bottom-up stereoscopic schematic diagram of the utility model;

[0027] Figure 5 For this utility model Figure 3 Enlarged three-dimensional schematic diagram of area A in the middle.

[0028] In the figure: 1 bottom plate, 2 fixing mechanism, 21 fixing plate, 22 telescopic connecting rod, 23 clamping plate, 24 clamping block, 25 first motor, 26 control block, 27 double-axis threaded rod, 3 straightening mechanism, 31 electric telescopic rod, 32 fixing frame, 33 lifting plate, 34 connecting plate, 35 sliding block, 36 slide rail, 37 second motor, 38 adjusting component, 381 connecting block, 382 elastic member, 383 supporting plate, 384 sliding sleeve, 385 pressing plate, 386 wedge block, 387 fixing block, 388 nut, 389 limiting rod, 3810 control plate, 3811 first extrusion block, 3812 second extrusion block, 3813 threaded rod, 39 moving block, 3010 reciprocating threaded rod, 3011 mounting plate, 4 supporting leg. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] like Figure 1-Figure 5As shown, this embodiment proposes a bottom plate 1 and two supporting legs 4 fixedly arranged on the bottom surface of the bottom plate 1, and a fixing mechanism 2 and a straightening mechanism 3 are arranged above the bottom plate 1;

[0032] The straightening mechanism 3 is located above the fixing mechanism 2;

[0033] The straightening mechanism 3 includes a straightening part and a lifting part;

[0034] The straightening part is located below the lifting part;

[0035] The straightening part includes a moving block 39 and an adjusting assembly 38, and the lifting part includes an electric telescopic rod 31 and a lifting plate 33;

[0036] The adjustment component 38 is located on the bottom surface of the moving block 39. The adjustment component 38 includes a fixed block 387 and two sliding sleeves 384. The bottom surface of the moving block 39 is also fixedly provided with a connecting block 381. The bottom surface of the connecting block 381 is fixedly connected to the top surface of the fixed block 387. The surface of the fixed block 387 is respectively fixedly connected to the bottom surfaces of the two sliding sleeves 384. The bottom surfaces of the two sliding sleeves 384 are respectively provided with two sliding grooves. The inner walls of the two sliding grooves are both slidably provided with a pressing plate 385. The back of the bottom plate 1 is fixedly provided with a fixed frame 32. The bottom surface of the fixed frame 32 is fixedly provided with a slide rail 36. The sliding sleeve on the surface of the slide rail 36 is provided with two sliding blocks 35. The bottom of the two sliding blocks 35 The two connecting plates 34 are hinged on the right side of the lifting plate 33, and the bottom surfaces of the two connecting plates 34 are hinged to the top surface of the lifting plate 33. The right side of the lifting plate 33 is fixedly provided with a mounting plate 3011, and the right side of the mounting plate 3011 is fixedly provided with a second motor 37. The left side of the output end of the second motor 37 passes through the right side of the mounting plate 3011 and extends to the right of the mounting plate 3011. A reciprocating threaded rod 3010 is fixedly provided on the left side of the output end of the second motor 37. The left side of the reciprocating threaded rod 3010 passes through the right side of the moving block 39 and extends to the left of the moving block 39. Two support plates 383 are fixedly provided on the right sides of the two sliding sleeves 384, and two support plates 383 are fixedly provided on the right sides of the two sliding sleeves 384. Elastic members 382 are fixedly provided on one side of the support plate 383, and two wedge-shaped grooves are respectively provided on the inner walls of the two through grooves. Two wedge blocks 386 are slidably provided on the inner walls of the two wedge grooves. The bottom surfaces of the two wedge blocks 386 are fixedly connected to the top surface of the pressure plate 385. A threaded rod 3813 is fixedly provided on the left side of the fixed block 387. A control plate 3810 is penetrated through the left side of the threaded rod 3813 and extends to the left side of the control plate 3810. A nut 388 is rotatably provided on the left side of the control plate 3810 through the second bearing seat. The inner side of the nut 388 is threadedly connected to the surface of the threaded rod 3813. The right side of the control plate 3810 is fixedly provided with a A first extrusion block 3811 is provided, and two second extrusion blocks 3812 are fixedly provided on the left sides of the two sliding sleeves 384 respectively. The inclined surfaces of the first extrusion block 3811 are slidingly connected with the inclined surfaces of the two second extrusion blocks 3812 respectively. A limiting rod 389 is fixedly provided on the left side of the fixed block 387. The left side of the limiting rod 389 slides through the control board 3810 and extends to the left side of the control board 3810. The top surface of the fixed frame 32 is fixedly connected to the bottom surface of the electric telescopic rod 31. The bottom surface of the output end of the electric telescopic rod 31 penetrates the top surface of the fixed frame 32 and extends to the inner side of the fixed frame 32. The bottom surface of the output end of the electric telescopic rod 31 is fixedly connected to the top surface of the lifting plate 33.

[0037] In this embodiment, the bent aluminum profile can be straightened by providing a straightening mechanism 3, and the aluminum profiles of different widths can be straightened by providing an adjustment component 38 during straightening. The two sliding sleeves 384 can be controlled to move forward and backward respectively to adjust according to the aluminum profiles of different widths, so that the straightening effect of the aluminum profile is better, and pits can be avoided on the surface of the aluminum profile after straightening. The pressure plate 385 can prevent a gap between the two sliding sleeves 284, so that the straightening effect of the aluminum profile is better. The lifting part can adjust the height of the two sliding sleeves 384 so that aluminum profiles of different heights can be straightened, thereby reducing the use restrictions. The two sliding blocks 35, two connecting plates 34 and the slide rail 36 can make the lifting plate 33 more stable when moving up and down.

[0038] Example 2

[0039] like Figure 1-Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the fixing mechanism 2 includes two clamping plates 23, the bottom surfaces of the two clamping plates 23 are slidably connected to the top surface of the bottom plate 1, the top surface of the bottom plate 1 is penetrated with a through groove, and two control blocks 26 are slidably arranged on the inner wall of the through groove, and the top surfaces of the two control blocks 26 are respectively fixedly connected to the bottom surfaces of the two clamping plates 23, and a double-axis threaded rod 27 is arranged inside the slide groove through a rotation of the bearing seat, and the front side of the double-axis threaded rod 27 sequentially penetrates the back side of the two control blocks 26 and extends to the front side of the front control block 26 A first motor 25 is fixedly arranged on the front side of the bottom plate 1, and the back side of the output end of the first motor 25 passes through the front side of the bottom plate 1 and extends to the inner side of the bottom plate 1. The back side of the output end of the first motor 25 is fixedly connected to the front side of the double-axis threaded rod 27. Two fixed plates 21 are fixedly arranged on the top side of the bottom plate 1, and two groups of telescopic connecting rods 22 are fixedly arranged on one side of the two fixed plates 21. The sides close to the two groups of telescopic connecting rods 22 are fixedly connected to the sides far from the two clamping plates 23, and the sides close to the two clamping plates 23 are fixedly arranged with two groups of clamping blocks 24.

[0040] In this embodiment, by providing a fixing mechanism 2, the aluminum profile can be fixed when it is straightened, so that it is more stable during straightening, and by controlling the two clamping plates 23 to move synchronously when fixing the aluminum profile, the aluminum profile can be positioned during clamping, so that the straightening effect is better, and by providing two sets of telescopic connecting rods 22, the stability can be better when the two clamping plates 23 move.

[0041] When in use, the aluminum profile that needs to be straightened is placed on the top of the base plate 1, and the first motor 25 is turned on. The rotation of the output end of the first motor 25 can drive the double-axis threaded rod 27 to rotate, and when the double-axis threaded rod 27 rotates, the two clamping plates 23 can be brought close to each other through the two control blocks 26, and when the two clamping plates 23 are close to each other, the two groups of clamping blocks 24 can be driven to approach each other, and when the two groups of clamping blocks 24 are close to each other, the aluminum profile can be fixed, and after the fixation is completed, the nut 388 is manually controlled to rotate, and when the nut 388 rotates, the control plate 3810 can be moved left and right through the threaded rod 3813, and when the control plate 3810 moves left and right, the two sliding sleeves 384 can be moved to the front and rear sides respectively through the elastic member 382, ​​so that the aluminum profile can be fixed according to the fixing. The two sliding sleeves 384 are adjusted according to the width of the aluminum profile. When the two sliding sleeves 384 move, there will be no gap between the two sliding sleeves 384 through the pressing plate 385. After the adjustment is completed, the electric telescopic rod 31 is turned on. The output end of the electric telescopic rod 31 is extended and retracted to drive the lifting plate 33 to move up and down. When the lifting plate 33 moves up and down, the two sliding sleeves 384 can be driven to move. After the up and down height adjustment of the two sliding sleeves 38 is completed, the second motor 37 is turned on. The output end of the second motor 37 rotates to drive the reciprocating threaded rod 3010 to rotate. When the reciprocating threaded rod 3010 rotates, the two sliding sleeves 384 can be reciprocated left and right through the moving block 309. When the two sliding sleeves 384 move back and forth left and right, the aluminum profile can be straightened.

[0042] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. An aluminum profile straightening device, comprising a base plate (1) and two supporting legs (4) fixedly arranged on the bottom surface of the base plate (1), characterized in that: A fixing mechanism (2) and a straightening mechanism (3) are arranged above the bottom plate (1); The straightening mechanism (3) is located above the fixing mechanism (2); The straightening mechanism (3) comprises a straightening part and a lifting part; The straightening part is located below the lifting part; The straightening part includes a moving block (39) and an adjusting assembly (38), and the lifting part includes an electric telescopic rod (31) and a lifting plate (33); The adjusting component (38) is located on the bottom surface of the moving block (39), and the adjusting component (38) includes a fixed block (387) and two sliding sleeves (384). The bottom surface of the moving block (39) is also fixedly provided with a connecting block (381). The bottom surface of the connecting block (381) is fixedly connected to the top surface of the fixed block (387). The surface of the fixed block (387) is respectively fixedly connected to the bottom surfaces of the two sliding sleeves (384). The bottom surfaces of the two sliding sleeves (384) are respectively provided with two sliding grooves, and the inner walls of the two sliding grooves are both slidably provided with pressure plates (385).

2. The aluminum profile straightening device according to claim 1, characterized in that: The fixing mechanism (2) comprises two clamping plates (23), the bottom surfaces of the two clamping plates (23) are both slidably connected to the top surface of the bottom plate (1), the top surface of the bottom plate (1) is penetrated by a through slot, and two control blocks (26) are slidably arranged on the inner wall of the through slot, the top surfaces of the two control blocks (26) are respectively fixedly connected to the bottom surfaces of the two clamping plates (23), a double-axis threaded rod (27) is rotatably arranged inside the slide slot through a bearing seat, the front side of the double-axis threaded rod (27) passes through the back sides of the two control blocks (26) in sequence and extends to the front of the front control block (26), a first motor (25) is fixedly arranged on the front side of the bottom plate (1), the back side of the output end of the first motor (25) passes through the front side of the bottom plate (1) and extends to the inner side of the bottom plate (1), and the back side of the output end of the first motor (25) is fixedly connected to the front side of the double-axis threaded rod (27).

3. The aluminum profile straightening device according to claim 1, characterized in that: A fixing frame (32) is fixedly arranged on the back of the bottom plate (1), a slide rail (36) is fixedly arranged on the bottom surface of the fixing frame (32), two sliding blocks (35) are slidably sleeved on the surface of the slide rail (36), the bottom surfaces of the two sliding blocks (35) are respectively hinged to two connecting plates (34), and the bottom surfaces of the two connecting plates (34) are both hinged to the top surface of the lifting plate (33).

4. The aluminum profile straightening device according to claim 1, characterized in that: The right side of the lifting plate (33) is fixedly provided with a mounting plate (3011), the right side of the mounting plate (3011) is fixedly provided with a second motor (37), the left side of the output end of the second motor (37) passes through the right side of the mounting plate (3011) and extends to the right side of the mounting plate (3011), the left side of the output end of the second motor (37) is fixedly provided with a reciprocating threaded rod (3010), the left side of the reciprocating threaded rod (3010) passes through the right side of the moving block (39) through a thread and extends to the left side of the moving block (39).

5. The aluminum profile straightening device according to claim 1, characterized in that: Two support plates (383) are fixedly arranged on the right sides of the two sliding sleeves (384), and elastic members (382) are fixedly arranged on the adjacent sides of the two support plates (383). Two wedge-shaped grooves are respectively provided on the inner walls of the two through grooves, and two wedge-shaped blocks (386) are slidably arranged on the inner walls of the two wedge-shaped grooves. The bottom surfaces of the two wedge-shaped blocks (386) are fixedly connected to the top surface of the pressure plate (385).

6. The aluminum profile straightening device according to claim 5, characterized in that: A threaded rod (3813) is fixedly arranged on the left side of the fixed block (387), and a control plate (3810) is penetrated on the left side of the threaded rod (3813) and extends to the left side of the control plate (3810). A nut (388) is rotatably arranged on the left side of the control plate (3810) through the second bearing seat, and the inner side of the nut (388) is threadedly connected with the surface of the threaded rod (3813). A first extrusion block (3811) is fixedly arranged on the right side of the control plate (3810), and two second extrusion blocks (3812) are fixedly arranged on the left sides of the two sliding sleeves (384), and the inclined surfaces of the first extrusion blocks (3811) are respectively slidably connected with the inclined surfaces of the two second extrusion blocks (3812). A limiting rod (389) is fixedly arranged on the left side of the fixed block (387), and the left side of the limiting rod (389) slides through the control plate (3810) and extends to the left side of the control plate (3810).

7. The aluminum profile straightening device according to claim 3, characterized in that: The top surface of the fixing frame (32) is fixedly connected to the bottom surface of the electric telescopic rod (31); the bottom surface of the output end of the electric telescopic rod (31) penetrates the top surface of the fixing frame (32) and extends to the inside of the fixing frame (32); the bottom surface of the output end of the electric telescopic rod (31) is fixedly connected to the top surface of the lifting plate (33).

8. The aluminum profile straightening device according to claim 2, characterized in that: Two fixing plates (21) are fixedly arranged on the top surface of the bottom plate (1); two groups of telescopic connecting rods (22) are fixedly arranged on the camera side surfaces of the two fixing plates (21); the adjacent side surfaces of the two groups of telescopic connecting rods (22) are fixedly connected to the distant side surfaces of the two clamping plates (23); and two groups of clamping blocks (24) are fixedly arranged on the adjacent side surfaces of the two clamping plates (23).

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