A brake disc workpiece rotating drive device

Abstract

The utility model relates to a brake disc workpiece rotation drive device belongs to brake disc measurement technical field, the disc body of brake disc is equipped with bolt hole, including frame, poking head mechanism, rotating mechanism and elevating system, the poking head mechanism includes poking lever outer tube and the poking lever of floating setting, the lower extreme of poking lever is equipped with poking head, the poking head projects the poking lever outer tube can with bolt hole insert fitting cooperation, and can drive brake disc rotating action under the action of rotating mechanism, the utility model discloses simple structure, utilizes the cooperation of poking head and the bolt hole of brake disc, and the poking head acts on the disc surface of brake disc, under the action of rotating mechanism, the poking head walks along the bolt hole center circle track of the circle of the bolt hole distribution of brake disc, until the poking head turns to the bolt hole position, and the poking head of floating poking lever inserts and packs into the bolt hole, realizes the automation of brake disc rotation drive, does not need manual participation, reduces the labor intensity of worker, prepares for the automation measurement of brake disc.

Description

Technical Field

[0001] This utility model relates to a brake disc workpiece rotation drive device, belonging to the field of brake disc measurement technology. Background Technology

[0002] A brake is a component in a braking system used to generate braking force that impedes the movement or tendency of a vehicle to move. Currently, based on the different rotating elements, they can be divided into two main categories: drum brakes and disc brakes. In a disc brake, the rotating element in the friction pair is a disc-shaped brake disc, also known as a brake disc. Its end face is the working surface, and the friction elements clamp the brake disc from both sides to generate braking force.

[0003] The quality of a car's braking system is related to the personal safety of drivers and pedestrians. The car brake disc is a key component related to the car's safety performance. Therefore, after the car brake disc is manufactured, it is necessary to measure the end face runout of the brake disc and the uniformity of the disc body thickness.

[0004] Traditionally, brake disc measurement involves manually placing the brake disc on a support fixture, moving the fixture to the measurement position, and using a dial indicator (such as a micrometer) to measure the brake disc. The brake disc is then manually rotated, requiring manual loading and unloading. This manual operation is labor-intensive, inefficient, and often results in random sampling of brake discs, making 100% inspection impossible and compromising quality control.

[0005] To match the automated production of brake discs and solve the aforementioned problems of existing manual measurement of brake discs, research began on a brake disc measuring instrument capable of automated measurement. To achieve automated measurement of brake discs, the problem of brake disc rotation drive needs to be solved. Therefore, a brake disc workpiece rotation drive device is needed. This drive device can achieve rotation drive of the brake disc during measurement without interfering with the measurement of the brake disc. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a brake disc workpiece rotation drive device.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a brake disc workpiece rotation driving device, wherein the brake disc body is provided with bolt holes, including a frame, a dial mechanism set on the frame, a rotating mechanism for driving the dial mechanism to rotate, and a lifting mechanism for driving the dial mechanism to move up and down. The dial mechanism includes a dial rod outer cylinder and a dial rod floating inside the dial rod outer cylinder. The lower end of the dial rod is provided with a dial head, which extends out of the dial rod outer cylinder and can be inserted into the bolt hole. Under the action of the rotating mechanism, it can drive the brake disc to rotate.

[0008] The beneficial effects of this utility model are as follows: This drive device fully utilizes the bolt holes on the brake disc. Under the action of the lifting mechanism, the head of the floating lever acts on the surface of the brake disc. Under the action of the rotating mechanism, the head travels along the circular trajectory of the bolt holes, until it reaches the bolt hole position. The head of the floating lever is then inserted into the bolt hole, and the rotating mechanism activates, enabling the brake disc to rotate via the lever. This achieves the rotational drive of the brake disc workpiece, meeting the requirements for automatic rotation of the brake disc and preparing for automatic measurement of the brake disc. This utility model has a simple structure, utilizing the cooperation between the head and the bolt holes of the brake disc to automate the rotational drive of the brake disc without manual intervention, reducing the labor intensity of workers and preparing for automated measurement of the brake disc.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the dial mechanism also includes a spring disposed inside the outer cylinder of the dial lever, the lower end of the spring acting on the top of the dial lever.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the lower end of the spring inside the outer cylinder of the lever acts on the top of the lever. When the lever head encounters an obstacle or is not accurately aligned with the bolt hole during the process of searching for the bolt hole of the brake disc, the spring can play a role in buffering and resetting, allowing the lever to float within a certain range. This avoids damage to the lever head or the surface of the brake disc due to hard contact, while ensuring that the lever head can be inserted into the bolt hole more flexibly and accurately, improving the stability and reliability of the entire drive device, and further ensuring the smooth operation of the automatic rotation drive of the brake disc.

[0012] Furthermore, the top of the lever is provided with a lever head, and the outer cylinder of the lever is provided with a limiting ring platform for limiting the lever head.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the limiting ring platform can limit the position of the lever head. When the lever floats up and down under the action of the spring, the limiting ring platform can prevent the lever from falling out of the outer cylinder of the lever, ensuring that the lever always moves within a reasonable range, thus guaranteeing the stability and safety of the lever mechanism.

[0014] Furthermore, the rotating mechanism can also be used to adjust the position of the dial.

[0015] The advantage of adopting the above-mentioned further solution is that the position of the dial can be adjusted according to the different pitch circles of the bolt holes on different models of brake discs, so that the dial can be accurately inserted into the bolt holes of the brake disc to rotate the brake disc, thus meeting the needs of automatic measurement of the brake disc.

[0016] Furthermore, the rotating mechanism is a rotary motor, and the dial mechanism is connected to the drive end of the rotary motor via a connecting plate.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the output shaft of the rotary motor is connected to the dial mechanism through a connecting plate. One end of the connecting plate is connected to the output shaft of the rotary motor, and the other end is connected to the dial mechanism. The connection position between the dial mechanism and the connecting plate can be adjusted according to the pitch circle of the bolt hole of the brake disc, so that under the action of the rotary motor, the dial of the dial mechanism sliding on the surface of the brake disc can accurately slide into the bolt hole of the brake disc, thereby driving the brake disc to rotate. The rotary motor can provide a stable and continuous power output to the dial mechanism, so that the dial mechanism can work at a predetermined speed, ensuring that the dial of the dial mechanism moves accurately and smoothly in the process of finding and inserting into the bolt hole of the brake disc, thereby realizing the automated rotation drive of the brake disc and enhancing the stability and reliability of the drive device during operation.

[0018] Furthermore, the rotating mechanism employs an electric rotating gripper, which includes at least two driving grippers, a gripper motor for controlling the radial movement of the driving grippers, and a rotary motor for driving the driving grippers to rotate. The dialing mechanism is connected to the driving grippers.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the rotating mechanism can use an electrically driven rotary gripper. There can be two or three drive grippers, and their radial positions are adjustable. There can be one or more shifting mechanisms. For example, if one shifting mechanism is provided, it can be installed on one of the drive grippers. The position of the drive gripper can be adjusted by a gripper motor so that the shifting head corresponds to the pitch circle of the bolt hole on the brake disc, allowing it to be smoothly inserted into the bolt hole. The radial position adjustment of the drive grippers under the control of the gripper motor can adapt to bolt holes in different positions, thus accommodating the rotation drive of brake discs of different sizes. After the shifting mechanism is positioned, the rotary motor can drive the entire shifting mechanism to rotate, enabling the brake disc to rotate automatically, enhancing the flexibility and adaptability of the drive device in the automated rotation of the brake disc.

[0020] Furthermore, the dialing mechanism is mounted on the lifting mechanism via the rotating mechanism.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the dialing mechanism is installed on the rotating mechanism, and the dialing mechanism can rotate on the rotating mechanism, thereby driving the brake disc on the measuring position to rotate. The rotating mechanism is installed on the lifting mechanism, and under the action of the lifting mechanism, the dialing mechanism can move up and down. The dialing mechanism can be lowered to the position where the dialing head can be inserted into the bolt hole of the brake disc under the action of the lifting mechanism, and then the rotation drive of the brake disc is realized under the action of the rotating mechanism.

[0022] Furthermore, the lifting mechanism includes a lifting cylinder, which is mounted on the frame, and the rotating mechanism is connected to the piston rod of the lifting cylinder via a cylinder connecting plate.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the lifting cylinder mounted on the frame provides a stable and reliable driving force for the lifting of the entire head mechanism. The lifting cylinder precisely drives the rotating mechanism and the head mechanism to move up and down, thereby moving the head mechanism to the appropriate position, that is, the position where the head can be inserted and engaged with the bolt holes of the brake disc. The lifting cylinder drive structure is simple and easy to implement, and can effectively ensure the stability and accuracy of the head mechanism during the lifting process, greatly improving the reliability of the brake disc workpiece rotation drive.

[0024] Furthermore, a vertical slide is provided between the rotating mechanism and the cylinder connecting plate.

[0025] The beneficial effect of adopting the above-mentioned further solution is that one end of the vertical slide is connected to the rotating mechanism and the other end is connected to the piston rod of the lifting cylinder, thereby realizing the connection between the rotating mechanism and the lifting mechanism through the vertical slide.

[0026] Furthermore, the vertical slide is provided with a slide mounting base, and a guide mechanism is provided between the frame and the slide mounting base. The guide mechanism includes a slide rail and a slider adapted to the slide rail. The slider is disposed on the slide mounting base, and the slide rail is disposed on the frame.

[0027] The beneficial effect of adopting the above-mentioned further solution is that the guide mechanism ensures that the vertical slide moves linearly along a predetermined trajectory during lifting and lowering, avoiding possible deviation or wobbling of the slide during movement. The cooperation between the slide rail and the slider provides stable guidance for the up-and-down movement of the dial mechanism, further improving the accuracy and reliability of the brake disc workpiece rotation drive.

[0028] Furthermore, the frame is provided with a guide frame, and the slide mounting base is provided with a slide groove that matches the side wall of the guide frame.

[0029] The beneficial effects of adopting the above-mentioned further solution are that the cooperation between the guide frame and the slide rail can further constrain the movement trajectory of the vertical slide, making it more stable and accurate during the lifting process, and further enhancing the stability of the vertical slide's up and down movement. In addition, the guide frame also provides additional support for the slide mounting base, enhancing the structural rigidity of the drive device.

[0030] Furthermore, the guide frame is provided with an upper buffer and a lower buffer for cushioning the slide mounting base.

[0031] The beneficial effects of adopting the above-mentioned further solution are that the upper and lower buffers can effectively buffer when the slide mount moves to the top and bottom of the guide frame, reduce the impact force between the slide mount and the guide frame, reduce wear and noise caused by impact, help protect the device components, extend their service life, and improve the stability and reliability of the device operation. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 for Figure 1 Front view structural diagram; Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the AA direction; Figure 4 This is a schematic diagram of the lifting mechanism of Embodiment 1 of this utility model; Figure 5 This is a structural schematic diagram of the lifting mechanism in Embodiment 1 of this utility model from a bottom view angle; Figure 6 for Figure 5 A three-dimensional structural diagram from another angle; Figure 7 This is a schematic diagram of the bolt hole insertion state of the dial and brake disc of this utility model; Figure 8 This is a schematic diagram of the brake disc structure; Figure 9 for Figure 8 A schematic diagram of the cross-sectional structure along the BB direction; Figure 10 This is a schematic diagram of the three-dimensional structure of the brake disc; In the diagram, 100 is the frame; 200 is the dial mechanism; 201 is the outer cylinder of the dial lever; 202 is the dial lever; 203 is the spring; 204 is the lever head; 205 is the limiting ring platform; 300 is the rotating mechanism; 301 is the driving gripper; 302 is the gripper motor; 303 is the rotary motor; 401 is the lifting cylinder; 402 is the cylinder connecting plate; 403 is the vertical slide; 404 is the slide mounting base; 405 is the slide rail; 406 is the slider; 407 is the guide frame; 408 is the slide groove; 409 is the upper buffer; 410 is the lower buffer; 500 is the brake disc; and 501 is the bolt hole. Detailed Implementation

[0033] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0034] Example 1, such as Figures 1-10As shown, a brake disc workpiece rotation drive device is provided. The brake disc 500 has bolt holes 501 on its disc body. It includes a frame 100, a dial mechanism 200 mounted on the frame 100, a rotation mechanism 300 for driving the dial mechanism 200 to rotate, and a lifting mechanism for driving the dial mechanism 200 to move up and down. The dial mechanism 200 includes a dial rod outer cylinder 201 and a dial rod 202 floatingly disposed in the dial rod outer cylinder 201. The lower end of the dial rod 202 is provided with a dial head. The dial head extends out of the dial rod outer cylinder 201 and can be inserted into the bolt hole 501. Under the action of the rotating mechanism 300, it can drive the brake disc 500 to rotate.

[0035] The shifter mechanism 200 also includes a spring 203 disposed within the outer cylinder 201 of the shift lever, with the lower end of the spring 203 acting on the top of the shift lever 202. When the shifter is searching for the bolt hole 501 of the brake disc 500, if it encounters an obstacle or is not accurately aligned with the bolt hole 501, the spring 203 can buffer and reset, allowing the shift lever 202 to float within a certain range. This prevents damage to the shifter or the surface of the brake disc 500 due to hard contact, while ensuring that the shifter can be inserted into the bolt hole 501 more flexibly and accurately. This improves the stability and reliability of the entire drive device, further ensuring the smooth automatic rotation drive of the brake disc 500.

[0036] The lever 202 has a lever head 204 at its top, and a limiting ring 205 is provided inside the lever outer cylinder 201 to limit the lever head 204. The limiting ring 205 can limit the lever head 204 of the lever 202. When the lever 202 floats up and down under the action of the spring 203, the limiting ring 205 can prevent the lever 202 from falling out of the lever outer cylinder 201, ensuring that the lever 202 always moves within a reasonable range, thus ensuring the stability and safety of the lever mechanism 200.

[0037] The rotating mechanism can also be used to adjust the position of the dial head. The position of the dial head can be adjusted according to the different pitch circles of the bolt holes 501 on different models of brake discs 500, so that the dial head can be accurately inserted into the bolt holes of the brake disc to rotate the brake disc, thus meeting the automatic measurement requirements of the brake disc 500.

[0038] The rotating mechanism 300 employs an electrically driven rotary gripper, which includes at least two drive grippers 301, a gripper motor 302 for controlling the radial movement of the drive grippers 301, and a rotary motor 303 for driving the drive grippers 301 to rotate. The lever outer cylinder 201 of the dial mechanism 200 is connected to the drive grippers 301. The rotating mechanism 300 can employ an electrically driven rotary gripper. There can be two or three drive grippers 301, and their radial positions are adjustable. There can be one or more toggle mechanisms 200. For example, if one toggle mechanism 200 is provided, it can be installed on one of the drive grippers 301. The position of the drive gripper 301 can be adjusted by the gripper motor 302 so that the toggle can correspond to the pitch circle of the bolt hole 501 of the brake disc 500, allowing the toggle to be smoothly inserted into the bolt hole 501. Under the control of the gripper motor 302, the radial position of the drive grippers 301 can be adjusted to adapt to bolt holes 501 in different positions, thus accommodating the rotation drive of brake discs 500 of different sizes. After the toggle mechanism 200 is positioned, the rotary motor 303 drives the entire toggle mechanism 200 to rotate, enabling the brake disc 500 to rotate automatically, enhancing the flexibility and adaptability of the drive device in the automated rotation of the brake disc 500.

[0039] The dialing mechanism 200 is mounted on the lifting mechanism via the rotating mechanism 300. The dialing mechanism 200 is mounted on the rotating mechanism 300, allowing it to rotate and drive the brake disc 500 at the measuring position to rotate. During the measurement process, the brake disc's rotational speed only needs to be stable and does not need to be too fast. The brake disc below the dialing mechanism and the brake disc positioning support component can have sliding friction or rolling friction. The rotating mechanism 300 is mounted on the lifting mechanism, allowing the dialing mechanism 200 to move up and down under the action of the lifting mechanism. The dialing mechanism 200 can descend to a position where the dial can be inserted into the bolt hole 501 of the brake disc 500, and then, under the action of the rotating mechanism 300, drive the rotation of the brake disc 500.

[0040] The lifting mechanism includes a lifting cylinder 401, which is mounted on the frame 100. The rotating mechanism 300 is connected to the piston rod of the lifting cylinder 401 via a cylinder connecting plate 402. The lifting cylinder 401, mounted on the frame 100, provides a stable and reliable driving force for the lifting of the entire dialing mechanism 200. The lifting cylinder 401 precisely drives the rotating mechanism 300 and the dialing mechanism 200 to move up and down, thereby moving the dialing mechanism 200 to a suitable position, i.e., a position where the dial can be inserted into the bolt hole 501 of the brake disc 500. The lifting cylinder 401 has a simple and easy-to-implement drive structure, effectively ensuring the stability and accuracy of the dialing mechanism 200 during lifting, greatly improving the reliability of the workpiece rotation drive of the brake disc 500.

[0041] A vertical slide 403 is provided between the rotating mechanism 300 and the cylinder connecting plate 402. One end of the vertical slide 403 is connected to the rotating mechanism 300, and the other end is connected to the piston rod of the lifting cylinder 401. The connection between the rotating mechanism 300 and the lifting mechanism is realized through the vertical slide 403.

[0042] The vertical slide 403 is provided with a slide mounting base 404. A guide mechanism is provided between the frame 100 and the slide mounting base 404. The guide mechanism includes a slide rail 405 and a slider 406 adapted to the slide rail 405. The slider 406 is disposed on the slide mounting base 404, and the slide rail 405 is disposed on the frame 100. The guide mechanism ensures that the vertical slide 403 moves linearly along a predetermined trajectory during lifting and lowering, avoiding possible deviation or wobbling of the slide during movement. The cooperation between the slide rail 405 and the slider 406 provides stable guidance for the up and down movement of the dial mechanism 200, further improving the accuracy and reliability of the workpiece rotation drive of the brake disc 500.

[0043] The frame 100 is provided with a guide frame 407, and the slide table mounting base 404 is provided with a slide groove 408 that is adapted to the side wall of the guide frame 407. The cooperation between the guide frame 407 and the slide groove 408 can further constrain the movement trajectory of the vertical slide table 403, making it more stable and accurate during lifting and lowering, and further enhancing the stability of the vertical slide table 403's up and down movement. In addition, the guide frame 407 also provides additional support for the slide table mounting base 404, enhancing the structural rigidity of the drive device.

[0044] The guide frame 407 is equipped with an upper buffer 409 and a lower buffer 410 for cushioning the slide mount 404. The upper buffer 409 and the lower buffer 410 can effectively cushion the slide mount 404 when it moves to the top and bottom of the guide frame 407, reduce the impact force between the slide mount 404 and the guide frame 407, reduce wear and noise caused by impact, help protect the device components, extend their service life, and improve the smoothness and reliability of the device operation.

[0045] In Example 2, the rotating mechanism 300 employs a rotary motor, and the dialing mechanism 200 is connected to the drive end of the rotary motor via a connecting plate. The output shaft of the rotary motor can be connected to the dialing mechanism 200 via the connecting plate. One end of the connecting plate is connected to the output shaft of the rotary motor, and the other end is connected to the dialing mechanism. The connection position between the dialing mechanism and the connecting plate can be adjusted according to the pitch circle of the bolt hole of the brake disc, so that under the action of the rotary motor, the dialing head sliding on the surface of the brake disc can accurately slide into the bolt hole of the brake disc, thereby driving the brake disc to rotate. This provides a stable and continuous power output to the dialing mechanism 200, allowing the dialing mechanism 200 to operate at a predetermined speed. This ensures that the dialing head of the dialing mechanism 200 moves accurately and smoothly during the process of finding and inserting into the bolt hole 501 of the brake disc 500, thereby achieving automated rotational drive of the brake disc 500 and enhancing the stability and reliability of the drive device during operation. The remaining structure is the same as in Example 1, and therefore will not be described further here.

[0046] This drive device makes full use of the bolt holes 501 on the brake disc 500. The position of the dial mechanism 200 needs to be adjusted according to the circular position of the bolt holes 501 on the brake disc 500 to be measured. After the adjustment is completed, the lifting cylinder 401 is activated, and the dial mechanism 200 moves towards the brake disc 500 below. When the dial of the lever 202 acts on the disc surface of the brake disc 500, the lifting cylinder 401 stops, the rotating mechanism is activated, and the dial of the lever 202 moves along the pitch circle trajectory of the bolt holes 501 on the brake disc 500 until the dial of the lever 202 rotates to the bolt holes 501 on the brake disc 500. Under the action of the spring 203, the dial of the lever 202 is inserted into the bolt holes 501 of the brake disc 500. The rotating mechanism is activated, which can drive the brake disc 500 to rotate, thereby realizing the rotation drive of the brake disc 500. This can provide strong support for the automated measurement of the end face runout of the brake disc 500.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A brake disc workpiece rotation drive device, wherein the brake disc (500) has bolt holes (501) on its disc body, characterized in that, It includes a frame (100), a dial mechanism (200) mounted on the frame (100), a rotating mechanism (300) for driving the dial mechanism (200) to rotate, and a lifting mechanism for driving the dial mechanism (200) to move up and down. The dial mechanism (200) includes a dial outer cylinder (201) and a dial rod (202) floatingly disposed in the dial outer cylinder (201). The lower end of the dial rod (202) is provided with a dial head. The dial head extends out of the dial outer cylinder (201) and can be inserted into the bolt hole (501). Under the action of the rotating mechanism (300), it can drive the brake disc (500) to rotate.

2. The brake disc workpiece rotation drive device according to claim 1, characterized in that, The dial mechanism (200) also includes a spring (203) disposed in the outer cylinder (201) of the dial lever, the lower end of which acts on the top of the dial lever (202).

3. The brake disc workpiece rotation drive device according to claim 2, characterized in that, The top of the lever (202) is provided with a lever head (204), and the outer cylinder (201) of the lever is provided with a limiting ring platform (205) for limiting the lever head (204).

4. The brake disc workpiece rotation drive device according to claim 1, characterized in that, The rotating mechanism can also be used to adjust the position of the dial.

5. The brake disc workpiece rotation drive device according to any one of claims 1-4, characterized in that, The rotating mechanism (300) is a rotating motor, and the dial mechanism (200) is connected to the drive end of the rotating motor through a connecting plate; Alternatively, the rotating mechanism (300) may employ an electric rotating gripper, which includes at least two driving grippers (301), a gripper motor (302) for controlling the radial movement of the driving grippers (301), and a rotary motor (303) for driving the driving grippers (301) to rotate. The dialing mechanism (200) is connected to the driving grippers (301).

6. The brake disc workpiece rotation drive device according to any one of claims 1-4, characterized in that, The dial mechanism (200) is mounted on the lifting mechanism via the rotating mechanism (300); the lifting mechanism includes a lifting cylinder (401), which is mounted on the frame (100), and the rotating mechanism (300) is connected to the piston rod of the lifting cylinder (401) via a cylinder connecting plate (402).

7. The brake disc workpiece rotation drive device according to claim 6, characterized in that, A vertical slide (403) is provided between the rotating mechanism (300) and the cylinder connecting plate (402).

8. The brake disc workpiece rotation drive device according to claim 7, characterized in that, The vertical slide (403) is provided with a slide mounting base (404), and a guide mechanism is provided between the frame (100) and the slide mounting base (404). The guide mechanism includes a slide rail (405) and a slider (406) adapted to the slide rail (405). The slider (406) is disposed on the slide mounting base (404), and the slide rail (405) is disposed on the frame (100).

9. The brake disc workpiece rotation drive device according to claim 8, characterized in that, The frame (100) is provided with a guide frame (407), and the slide mount (404) is provided with a slide groove (408) that is adapted to the side wall of the guide frame (407).

10. The brake disc workpiece rotation drive device according to claim 9, characterized in that, The guide frame (407) is provided with an upper buffer (409) and a lower buffer (410) for buffering the slide mount (404).

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