A device for flanging a hollow metal tube

Abstract

The application discloses a hollow metal pipe flanging device, which comprises a fixing seat, a fixing mechanism, a pulling mechanism and an expanding mechanism are correspondingly arranged on the fixing seat; the fixing mechanism is used for fixing the hollow metal pipe and aligning the hollow metal pipe with the expanding mechanism; the pulling mechanism is connected with the fixing mechanism, and the fixing mechanism can move to the direction of the expanding mechanism through the pulling mechanism; the expanding mechanism is used for flanging the end of the hollow metal pipe, and the expanding flanging mode is adopted to replace the original extruding flanging mode, that is, the axial extruding processing is changed into the radial expanding flanging, and no matter how long the hollow metal pipe is, the end of the hollow metal pipe can be flanged, and the two ends of the hollow metal pipe are not forced, so that the operation is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of automation equipment technology, specifically a hollow metal tube flange device. Background Technology

[0002] Building panel support components can be understood as two parallel building panels with several support components placed between them to form an I-shaped structure. For a long time, most support components were made of solid metal, which was costly. Later, due to improvements in technology, most support components are now made of hollow metal tubes. Usually, the support components are not very long, and their production typically uses longer hollow metal tubes as raw materials, which are then cut. Manual cutting is not only inefficient, but also results in large length errors in the cut support components. Using support components of varying heights can cause the building panels to be non-parallel, affecting their use. To address this, our company has developed a device for cutting metal tubes. Since the hollow metal tubes are relatively long, our proposed solution is to fold one end of the hollow metal tube and then use a gripper to hold the folded end and pull it into the cutting device. Because the hollow tube is long and the other end is not under stress, it is not possible to fold it by extrusion. Therefore, we have proposed a folding device that differs from the extrusion method. Summary of the Invention

[0003] The purpose of this invention is to provide a device for flanging hollow metal tubes to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A hollow metal tube flange device includes a fixed base, on which a fixing mechanism, a pulling mechanism and an expanding mechanism are correspondingly installed;

[0006] The fixing mechanism is used to fix the hollow metal tube and align the hollow metal tube with the expansion mechanism.

[0007] The pulling mechanism is connected to the fixing mechanism, and the fixing mechanism can be moved towards the expanding mechanism through the pulling mechanism;

[0008] The expansion mechanism is used to flange the ends of the hollow metal tube.

[0009] In a further technical solution, the expansion mechanism includes several resettable movable components arranged in a circular array, and each movable component is provided with a conical abutment block 1. The sidewalls of the several conical abutment blocks 1 abut against the inner wall of the hollow metal tube, and a conical abutment block 2 abuts against the inner side of the several conical abutment blocks 1. The conical abutment block 2 is connected to a cylinder 1.

[0010] In a further technical solution, the movable component includes a fixed block and a sliding pair, the sliding pair being connected to the movable block, and a plurality of springs being provided between the movable block and the fixed block.

[0011] A further technical solution also includes a drive device, which is connected to a turntable assembly via a transmission belt. The turntable assembly is fixedly mounted on a fixed plate, and the movable component is fixedly mounted on the fixed plate. One output end of the cylinder passes through the turntable assembly and the fixed plate.

[0012] In a further technical solution, the turntable assembly includes a rotating shaft that passes through the fixed base. A turntable body and a bearing sleeve are fitted on the rotating shaft. Both the rotating shaft and the turntable body are connected to a fixed plate. The bearing sleeve is fixed on the fixed base. The output end of cylinder one passes through the rotating shaft and is connected to conical contact block two.

[0013] A further technical solution is provided where a fixed block 2 is provided between two adjacent movable components, and a cylindrical abutment block 3 is provided on the fixed block 2. Several cylindrical abutment blocks 3 are located on the rear side of several conical abutment blocks 1, and the space enclosed by several cylindrical abutment blocks 3 is larger than the space enclosed by several conical abutment blocks 1. The sidewalls of several cylindrical abutment blocks 3 abut against the flange.

[0014] In a further technical solution, the fixing mechanism includes a movable plate, the middle of which is provided with a working hole corresponding to the expansion mechanism. A resettable clamping component one and a clamping component two are symmetrically installed on the upper and lower sides of the movable plate corresponding to the working hole. The pulling mechanism passes through the movable plate and is connected to both sides of the clamping component one and the clamping component two respectively.

[0015] In a further technical solution, the clamping component one and the clamping component two have the same structure. The clamping component two includes a clamping seat with a semi-circular clamping position. At least one torsion bar is connected to each side of the clamping seat, and the other end of the torsion bar is connected to the movable plate.

[0016] A further technical solution is provided with a plurality of positioning rods on the fixed base, the positioning rods passing through the movable plate, and a limiting nut fixed at the end of the positioning rod. A second spring is sleeved on the positioning rod, and the two ends of the second spring abut against the fixed base and the movable plate respectively.

[0017] In a further technical solution, the pulling mechanism includes two cylinders, each with a connecting frame at its output end. A pull rod and a pull rod are rotatably connected to the connecting frame. The other ends of the pull rods pass through the movable slots on the movable plate and are rotatably connected to clamping assembly one and clamping assembly two, respectively.

[0018] The beneficial effects of this invention are:

[0019] This invention replaces the original extrusion flanging method with an expansion flanging method, that is, it changes the original axial extrusion processing to radial expansion flanging. No matter how long the hollow metal tube is, one end can be flanged without putting force on both ends of the hollow metal tube, which is convenient to operate.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] Figure 1 Assembly drawing of the complete machine.

[0022] Figure 2 Overall structure of the invention Figure 1 .

[0023] Figure 3 : Structural diagram of the expansion mechanism of the present invention.

[0024] Figure 4 : A structural diagram of the turntable assembly of the present invention.

[0025] Figure 5 : Exploded view of the expansion mechanism of the present invention.

[0026] Figure 6 Overall structure of the invention Figure 2 .

[0027] Figure 7 : Structural diagrams of the fixing mechanism and pulling mechanism of the present invention.

[0028] Figure 8 : A schematic diagram of the workflow of this invention.

[0029] Reference numerals: 1-Fixed base, 2-Fixing mechanism, 21-Modible plate, 211-Modible strip hole, 22-Working hole, 23-Clamping assembly one, 24-Clamping assembly two, 241-Clamping seat, 242-Clamping position, 243-Torque bar, 251-Positioning rod, 252-Limit nut, 253-Spring two, 3-Pull mechanism, 31-Cylinder two, 32-Connecting frame, 33-Pull rod one, 34-Pull rod two, 4-Expanding machine 41-Moving component, 411-Fixed block one, 412-Sliding pair, 413-Moving block, 414-Spring one, 42-Conical abutment block one, 43-Conical abutment block two, 44-Cylinder one, 451-Drive device, 452-Transmission belt, 453-Turntable assembly, 4531-Rotating shaft, 4532-Turntable body, 4533-Bearing sleeve, 46-Fixed plate, 47-Fixed block two, 48-Cylindrical abutment block three. Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Please refer to Figure 1-8 ;

[0032] The flanging device of the present invention can flanging one end of a metal hollow tube without the need for force at both ends. Therefore, the device can be used in conjunction with cutting equipment or used alone.

[0033] Specifically, it includes a fixed base 1, on which a fixing mechanism 2, a pulling mechanism 3, and an expansion mechanism 4 are installed. The fixing mechanism 2 is used to fix the hollow metal tube and align the hollow metal tube with the expansion mechanism 4. The pulling mechanism 3 is connected to the fixing mechanism 2 and can move the fixing mechanism 2 toward the expansion mechanism 4 through the pulling mechanism 3. The expansion mechanism 4 is used to fold the end of the hollow metal tube.

[0034] The above technical solution has two implementation methods:

[0035] In the first implementation method, the hollow metal tube is transported to the fixing mechanism 2 by a feeding device or manual operation. Then, the position of the hollow metal tube is fixed by the fixing mechanism 2. After that, the fixing mechanism 2 is moved towards the fixing seat 1 by the pulling mechanism 3. At the same time, the hollow metal tube will also move and be inserted into the expansion mechanism 4. The actuating component of the expansion mechanism 4 is inserted into the inner side of the end of the hollow metal tube. The actuating components of the expansion mechanism 4 are opened away from each other and abut against the inner wall of the hollow metal tube. As the actuating components gradually open, a flange is formed at the end of the hollow metal tube.

[0036] In the second implementation method, the hollow metal tube is transported to the fixing mechanism 2 by a feeding device or manual operation, and then further inserted into the expansion mechanism 4. At the same time, the actuating component in the expansion mechanism 4 is also inserted into the inner side of the end of the hollow metal tube. As the actuating component gradually opens, a flange is formed at the end of the hollow metal tube. Meanwhile, the fixing mechanism 2 is moved towards the fixing seat 1 by the pulling mechanism 3, and the hollow metal tube will also move accordingly, that is, the hollow metal tube assembly extends into the expansion mechanism 4, thereby increasing the area of ​​the flange.

[0037] After the two methods described above are used to flip the edge, the actuating component of the expansion mechanism 4 retracts, the pulling mechanism 3 resets, and at the same time, the fixing mechanism 2 is pushed away from the fixing base 1, so that the hollow metal tube is separated from the expansion mechanism 4. Meanwhile, the fixing mechanism 2 loosens the hollow metal tube, which can then be removed.

[0038] The flanging mechanism of the present invention replaces the original extrusion flanging method with an expansion flanging method, that is, it changes the original axial extrusion processing to radial expansion flanging. No matter how long the hollow metal tube is, one end can be flanged, which is convenient for operation. Then, the flanged part is clamped by a gripper and pulled into the cutting device.

[0039] Of course, it can also be used alone. Take a section of the cut hollow metal tube, install the above-described method, put it into the flanging device to flanging one end, then take it out, and then flanging the other end in the same way.

[0040] One embodiment of the expansion mechanism 4 of the present invention specifically includes a plurality of resettable movable components 41 arranged in a circular array, and a conical abutment block 42 is provided on each movable component 41. In this embodiment, the smaller end of the conical abutment block 42 faces the hollow metal tube, and the sidewalls of the plurality of conical abutment blocks 42 abut against the inner wall of the hollow metal tube. A conical abutment block 43 abuts against the inner side of the plurality of conical abutment blocks 42. In this embodiment, the setting direction of the conical abutment block 43 is opposite to that of the conical abutment block 42, and the conical abutment block 43 is connected to a cylinder 44. In the initial state, the plurality of conical abutment blocks 42 are gathered together and located on the outer periphery of the conical abutment block 43. At this time, the plurality of conical abutment blocks 42 are... 2 can abut against the conical abutment block 43 or not; then, according to the above embodiment, the hollow metal tube is fed and fixed. At this time, several conical abutment blocks 42 and 43 extend into the inner side of the hollow metal tube; the expansion mechanism 4 starts to operate, and the conical abutment block 43 is driven to retract by the cylinder 44. At this time, the conical abutment block 43 moves relative to the conical abutment block 42 and abuts against it. As the conical abutment block 43 gradually retracts, several conical abutment blocks 42 gradually expand outward. At the same time, the side of the conical abutment block 42 away from the conical abutment block 43 abuts against the inner wall of the hollow metal tube. As the conical abutment block 42 gradually expands outward, the contact part between the hollow metal tube and the conical abutment block 42 gradually tilts outward to form a flange.

[0041] After the flanging is completed, cylinder 44 pushes the conical abutment block 43 outward, and under the action of the movable component 41, the conical abutment block 42 retracts and resets, that is, several conical abutment blocks 42 gather together again.

[0042] Furthermore, the movable component 41 includes a fixed block 411 and a sliding pair 412. The sliding pair 412 is connected to a movable block 413. A plurality of springs 414 are provided between the movable block 413 and the fixed block 411. Under the action of the springs 414, the movable block 413 moves away from the fixed block 411. A conical abutment block 42 is provided on the movable block 413. There are a plurality of movable components 41, which are arranged in a circular array. In this embodiment, the plurality of movable blocks 413 converge towards the center. With the setting of the sliding pair 412, the movement of the movable block 413 is smoother, and it also has a limiting function.

[0043] When the conical abutment block 43 retracts under the action of cylinder 44, it causes the conical abutment block 42 to expand outward. At this time, the movable block 413 compresses the spring 414. When the conical abutment block 43 extends under the push of cylinder 44, the movable block 413 extends along the extension direction of the sliding pair 412 under the action of spring 414, causing several conical abutment blocks 42 to converge again.

[0044] The expansion mechanism 4 of this invention includes a driving device 451, which is connected to a turntable assembly 453 via a transmission belt 452. Driven by the driving device 451 and the belt, the turntable assembly 453 rotates. A fixed plate 46 is fixedly mounted on the turntable assembly 453, and a movable component 41 is fixedly mounted on the fixed plate 46. The output end of a cylinder 44 passes through the turntable assembly 453 and the fixed plate 46. When the turntable assembly 453 rotates, the output end of the cylinder 44 can move relative to the turntable assembly 453. It remains stationary and does not rotate with the turntable assembly 453. Specifically, the turntable assembly 453 drives the fixed plate 46 to rotate, and the movable assembly 41 and the conical abutment block 42 will also rotate. In this embodiment, the conical abutment block 42 can be rotatably connected to the movable assembly 41. When performing the flanging operation, the rotation method allows several conical abutment blocks 42 to contact every position on the inner edge of the hollow metal tube, that is, the edge position of the hollow metal tube is subjected to more uniform force, avoiding deformation during flanging.

[0045] In one embodiment of the turntable assembly 453, a rotating shaft 4531 passes through the fixed base 1. A turntable body 4532 and a bearing sleeve 4533 are fitted on the rotating shaft 4531. Both the rotating shaft 4531 and the turntable body 4532 are connected to the fixed plate 46. The bearing sleeve 4533 is fixed on the fixed base 1. The output end of the cylinder 44 passes through the rotating shaft 4531 and is connected to the conical abutment block 43. In this embodiment, the bearing sleeve 4533 is provided with a mounting bracket for fixing the cylinder 44.

[0046] Furthermore, a fixing block 2 47 is provided between two adjacent movable components 41, and a cylindrical abutment block 3 48 is provided on the fixing block 2 47. Several cylindrical abutment blocks 3 48 are located behind several conical abutment blocks 1 42, that is, the cylindrical abutment blocks 3 are located between two conical abutment blocks 1 42, and the conical abutment blocks 1 42 contact the hollow metal tube before the cylindrical abutment blocks 3. The space enclosed by several cylindrical abutment blocks 3 48 is larger than the space enclosed by several conical abutment blocks 1 42. Several cylindrical abutment blocks 3 48... The side wall of block 3 48 abuts against the flange of the hollow metal tube; when several conical abutment blocks 1 42 abut against the inner side wall of the hollow metal tube and gradually expand, the end of the hollow metal tube forms a conical flange. Then, the pulling mechanism 3 moves the fixing mechanism 2 closer to the fixing seat 1, and simultaneously drives the hollow metal tube to gradually penetrate into the expansion mechanism 4, and finally makes the conical flange abut against the side wall of several cylindrical abutment blocks 3. It should be noted that the fixing block 2 47 is also installed on the fixing plate 46 and rotates synchronously, so that the outward turning angle of the conical flange is larger.

[0047] One embodiment of the fixing mechanism 2 of the present invention specifically includes a movable plate 21. The movable plate 21 has a working hole 22 in its center corresponding to the expansion mechanism 4. Resettable clamping components 23 and 24 are symmetrically installed on the upper and lower sides of the movable plate 21, corresponding to the working hole 22. A pulling mechanism 3 passes through the movable plate 21 and connects to both sides of the clamping components 23 and 24 respectively. In the initial state, the clamping components 23 and 24 are in an open state, and the pulling mechanism 3 performs two pulling actions. The first... The pulling action causes the clamping components 23 and 24 to move closer together under the action of the pulling mechanism 3, and finally clamp the hollow metal tube. At this time, the clamping position 242 formed by the clamping components 23 and 24 is aligned with the working hole 22, that is, the hollow metal hole is aligned with the working hole 22. After the clamping and fixing are completed, the pulling mechanism 3 performs a second action, pulling the entire fixing mechanism 2 closer to the expansion mechanism 4, so that the actuating component of the expansion mechanism 4 passes through the working hole 22 and is inserted into the hollow metal tube, and finally the flanging operation is performed.

[0048] Of course, before fixing the hollow metal tube, the hollow metal tube can be passed through the working hole 22 and then clamped and fixed by clamping component one 23 and clamping component two 24.

[0049] In the above embodiments, the clamping component 23 and the clamping component 24 are described as vertically symmetrical. However, in practical applications, it is possible to arrange them in a horizontally symmetrical manner, which should fall within the protection scope of this solution.

[0050] A reset device is also provided between the fixing mechanism 2 and the fixing seat 1. After the flanging operation is completed, the pulling force of the pulling mechanism 3 disappears. At this time, the reset device pushes the fixing mechanism 2 away from the fixing seat 1 to reset. In this embodiment, the reset mechanism includes a number of positioning rods 251 fixed on the fixing seat 1. The positioning rods 251 pass through the movable plate 21, and a limiting nut 252 is fixed at the end of the positioning rods 251. A second spring 253 is sleeved on the positioning rods 251. The two ends of the second spring 253 abut against the fixing seat 1 and the movable plate 21 respectively.

[0051] In this embodiment, clamping component 1 23 and clamping component 24 have the same structure. The structure of clamping component 24 will be described below. Specifically, it includes a clamping seat 241 with a semi-circular clamping position 242. The corresponding clamping component 1 23 has the other half of the clamping position 242 for cooperation. At least one torsion bar 243 is connected to each side of the clamping seat 241. The other end of the torsion bar 243 is connected to the movable plate 21. When the pulling mechanism 3 applies a pulling force to clamping component 1 23 and clamping component 244 that is greater than the torque of the torsion bar 243, clamping component 1 23 and clamping component 244 move closer to each other to form a clamping and fixing state for the hollow metal tube. When the pulling force of the pulling mechanism 3 disappears, the clamping seat 241 is reset by the torsion bar 243, that is, clamping component 1 23 and clamping component 24 move away from each other, releasing the clamping state.

[0052] In addition, the clamping seat 241 on the clamping component 23 is provided with positioning tooth 1, and the clamping seat 241 on the clamping component 24 is provided with positioning tooth 2. When the clamping component 23 and the clamping component 24 form a clamping state, positioning tooth 1 and positioning tooth 2 mesh.

[0053] One embodiment of the present invention regarding the pulling mechanism 3 specifically includes two cylinders 31. Each cylinder 31 has a connecting frame 32 at its output end. A pull rod 33 and a pull rod 34 are rotatably connected to the connecting frame 32. The other ends of the pull rods 33 and 34 pass through the movable slots 211 on the movable plate 21 and are rotatably connected to the clamping assembly 23 and clamping assembly 24, respectively. It should be noted that pull rods 1 and 2 are respectively provided on both sides of the clamping assembly 23 and clamping assembly 24. In the initial state, the clamping assembly 23 and clamping assembly 24 are in an open state. The pull rods 33 and 34 on both sides are in a figure-eight shape. When the cylinder 31 drives the connecting rod to move backward, it pulls the pull rods 33 and 34 backward respectively. At the same time, the pull rods 33 and 34 will gradually retract to form a parallel state. Meanwhile, the clamping components 23 and 24 will gradually approach each other to form a clamping state. When the cylinder 31 pulls the connecting frame 32 backward again, the clamping components 23 and 24 cannot release the force because they are in abutting position. At this time, the cylinder 31 can pull the fixing mechanism 2 to move towards the fixing seat 1.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A device for flanging hollow metal tubes, characterized in that: It includes a fixed base (1), on which a fixing mechanism (2), a pulling mechanism (3) and an expanding mechanism (4) are correspondingly installed; The fixing mechanism (2) is used to fix the hollow metal tube and align the hollow metal tube with the expansion mechanism (4); The pulling mechanism (3) is connected to the fixing mechanism (2), and the fixing mechanism (2) can be moved towards the expansion mechanism (4) by the pulling mechanism (3); The expansion mechanism (4) is used to flange the end of the hollow metal tube; The expansion mechanism (4) includes several resettable movable components (41), which are arranged in a circular array. Each movable component (41) is provided with a conical abutment block (42). The sidewalls of the conical abutment blocks (42) abut against the inner wall of the hollow metal tube. A conical abutment block (43) abuts against the inner side of the conical abutment blocks (42). The conical abutment block (43) is connected to the cylinder (44).

2. The hollow metal tube flange-flanging device according to claim 1, characterized in that: The movable component (41) includes a fixed block (411) and a sliding pair (412). The sliding pair (412) is connected to a movable block (413). A plurality of springs (414) are provided between the movable block (413) and the fixed block (411).

3. A hollow metal tube flange-flanging device according to claim 1 or 2, characterized in that: It also includes a drive device (451), which is connected to a turntable assembly (453) via a transmission belt (452). The turntable assembly (453) is fixedly mounted on a fixed plate (46). The movable component (41) is fixed on the fixed plate (46). The output end of cylinder one (44) passes through the turntable assembly (453) and the fixed plate (46).

4. The hollow metal tube flange-flanging device according to claim 3, characterized in that: The turntable assembly (453) includes a rotating shaft (4531) that passes through the fixed base (1). A turntable body (4532) and a bearing sleeve (4533) are fitted on the rotating shaft (4531). Both the rotating shaft (4531) and the turntable body (4532) are connected to the fixed plate (46). The bearing sleeve (4533) is fixed on the fixed base (1). The output end of cylinder one (44) passes through the rotating shaft (4531) and is connected to the conical abutment block two (43).

5. The hollow metal tube flange-flanging device according to claim 3, characterized in that: A fixing block 2 (47) is provided between two adjacent movable components (41). A cylindrical abutment block 3 (48) is provided on the fixing block 2 (47). Several cylindrical abutment blocks 3 (48) are located on the rear side of several conical abutment blocks 1 (42), and the space enclosed by several cylindrical abutment blocks 3 (48) is larger than the space enclosed by several conical abutment blocks 1 (42). The sidewalls of several cylindrical abutment blocks 3 (48) abut against the flange.

6. The hollow metal tube flange-flanging device according to claim 1, characterized in that: The fixing mechanism (2) includes a movable plate (21). The movable plate (21) has a working hole (22) in the middle that corresponds to the expansion mechanism (4). The working hole (22) is located on the upper and lower sides of the movable plate (21) and a resettable clamping component one (23) and a clamping component two (24) are symmetrically installed. The pulling mechanism (3) passes through the movable plate (21) and is connected to both sides of the clamping component one (23) and the clamping component two (24).

7. The hollow metal tube flange device according to claim 6, characterized in that: The clamping assembly one (23) and clamping assembly two (24) have the same structure. The clamping assembly two (24) includes a clamping seat (241), and the clamping seat (241) is provided with a semi-circular clamping position (242). At least one torsion bar (243) is connected to each side of the clamping seat (241), and the other end of the torsion bar (243) is connected to the movable plate (21).

8. The hollow metal tube flange-flanging device according to claim 7, characterized in that: The fixed base (1) is provided with a plurality of positioning rods (251), the positioning rods (251) penetrate the movable plate (21), and a limiting nut (252) is fixed at the end of the positioning rod (251). A second spring (253) is sleeved on the positioning rod (251), and the two ends of the second spring (253) abut against the fixed base (1) and the movable plate (21) respectively.

9. The hollow metal tube flange-flanging device according to claim 6, characterized in that: The pulling mechanism (3) includes two cylinders (31), and each cylinder (31) has a connecting frame (32) at its output end. A pull rod (33) and a pull rod (34) are rotatably connected to the connecting frame (32). The other ends of the pull rod (33) and the pull rod (34) pass through the movable slot (211) on the movable plate (21) and are rotatably connected to the clamping assembly (23) and the clamping assembly (24).

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