Heat shield handling device

Abstract

The utility model discloses a heat shield taking and placing device relates to heat shield production equipment technical field. The heat shield taking and placing device includes the bottom disc, stable module, snatchs module and displacement module. The bottom disc includes a plurality of pulleys at the bottom of bottom disc, and stable module sets up in the bottom disc, and stable module includes support foot, first drive piece that drives support foot moves along up and down direction, and support foot has the first state that exceeds the bottom of pulley downward, and the second state that does not exceed the bottom of pulley, and snatchs module includes first clamping plate, second clamping plate, the second drive piece that drives first clamping plate and second clamping plate are close or far away, and displacement module is used for adjusting the position of snatchs module and includes the lifting assembly that adjusts the position of snatchs module along up and down direction, the rotating assembly that adjusts the position of snatchs module along horizontal direction. Through adopting the technology that the utility model provides, can realize the efficient taking and placing of heat shield, avoids manual contact high temperature heat shield, effectively reduces the security risk.

Description

Technical Field

[0001] This utility model relates to the technical field of heat insulation cover production equipment, and specifically to a heat insulation cover loading and unloading device. Background Technology

[0002] In industries such as automotive and aerospace, heat shields are widely used components, typically formed by stamping metal sheets (such as steel or aluminum). However, even after current stamping machines produce heat shields with specific contours and textures from the metal sheets, manual stacking and transfer are still required.

[0003] This manual stacking and transfer method not only restricts the production efficiency of heat shields but also poses certain safety hazards. The reason is that during the stamping process, the metal sheets generate a large amount of heat due to intense plastic deformation, resulting in a high surface temperature of the freshly stamped heat shield, posing a risk of burns to workers. Utility Model Content

[0004] This invention provides a heat insulation cover handling device to solve the safety risks associated with manual handling of heat insulation covers in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a heat insulation cover loading and unloading device. The heat insulation cover loading and unloading device includes: The chassis includes a plurality of pulleys located at the bottom of the chassis; A stabilizing module is disposed on the chassis. The stabilizing module includes a support foot and a first driving member that drives the support foot to move in a vertical direction. The support foot has a first state in which it extends downward beyond the bottom of the pulley and a second state in which it does not extend beyond the bottom of the pulley. The gripping module includes a first clamping plate, a second clamping plate, and a second driving member that drives the first clamping plate and the second clamping plate to move closer to or away from each other. A displacement module is used to adjust the position of the gripping module. The displacement module includes a lifting component for adjusting the position of the gripping module in the vertical direction and a rotating component for adjusting the position of the gripping module in the horizontal direction. Wherein, the lifting component is located on the rotating component, and the gripping module is fixed to the lifting component, or the rotating component is located on the lifting component, and the gripping module is fixed to the rotating component.

[0006] This invention utilizes a lifting component to adjust the gripping module vertically and a rotating component to adjust it horizontally, allowing for flexible position adjustment of the gripping module in three-dimensional space. The gripping module employs a first clamping plate and a second clamping plate, and is equipped with a second driving component to open and close the first and second clamping plates. This enables the gripping module to flexibly adapt to heat insulation covers of different specifications or shapes, and to stably clamp and release the heat insulation covers. Furthermore, through the coordinated operation of the gripping module and the displacement module, efficient handling of heat insulation covers is achieved, avoiding manual contact with the high-temperature heat insulation covers and effectively reducing safety risks.

[0007] In addition, the stabilizing module includes a support foot and a first driving component that drives its movement. In the first state, the support foot extends downward beyond the bottom of the pulley, contacts the ground, and provides stable support for the entire heat shield loading and unloading device. In the second state, it does not extend beyond the bottom of the pulley to avoid interfering with the movement of the pulley, so that the pulley can easily drive the entire device to move freely in the plane.

[0008] According to another specific embodiment of the present invention, the lifting assembly includes a telescopic push rod that can extend and retract along the vertical direction to adjust the vertical position of the gripping module. One end of the telescopic push rod is connected to the rotating assembly, and the other end is connected to the gripping module.

[0009] According to another specific embodiment of the present invention, the rotating assembly includes a lifting plate spaced apart from the chassis along the vertical direction, a lifting column connecting the lifting plate and the chassis, and a rotating disk located on the lifting plate. One end of the telescopic push rod is connected to the rotating disk. The rotating disk can rotate around the central axis of the rotating disk to adjust the position of the gripping module in the horizontal direction.

[0010] According to another specific embodiment of the present invention, the lifting assembly includes a lifting plate spaced apart from the chassis along the vertical direction and a lifting column connecting the lifting plate and the chassis; wherein, the rotating assembly is located on the lifting plate, and the lifting column can be raised and lowered along the vertical direction to adjust the position of the gripping module in the vertical direction.

[0011] According to another specific embodiment of the present invention, the gripping module further includes a telescopic push rod capable of driving the first clamping plate and the second clamping plate to move along the vertical direction. One end of the telescopic push rod is connected to the rotating assembly, and the other end is connected to the second driving member.

[0012] According to another specific embodiment of the present invention, the rotating assembly includes a rotating disk located on the lifting plate, and a plurality of gripping modules are arranged at intervals along the circumference of the rotating disk.

[0013] According to another specific embodiment of the present invention, the stabilizing module includes a counterweight block disposed on the support foot.

[0014] According to another specific embodiment of the present invention, the heat insulation cover removal and placement device further includes a handrail.

[0015] According to another specific embodiment of the present invention, the handrail frame is located on the chassis, and the handrail frame includes a vertical section extending along the vertical direction and a horizontal section connected to the vertical section. The vertical section and the pulley are located on opposite sides of the chassis along the vertical direction.

[0016] According to another specific embodiment of the present invention, a heat insulation pad is provided on the side of the first clamping plate facing the second clamping plate, and / or the heat insulation pad is provided on the side of the second clamping plate facing the first clamping plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional schematic diagram of a heat insulation cover loading and unloading device provided in this application; Figure 2 yes Figure 1 A three-dimensional diagram from another perspective; Figure 3 yes Figure 1 A diagram from another perspective; Figure 4 This is a schematic diagram of the connection between a displacement module and a gripping module provided in this application; Figure 5 This is a three-dimensional schematic diagram of a displacement module provided in this application; Figure 6 This is a three-dimensional schematic diagram of a gripping module provided in this application.

[0018] Explanation of reference numerals in the attached figures: 1. Chassis; 10. Pulley; 11. Handrail; 110. Vertical section; 111. Horizontal section; 2. Stabilizing module; 20. Support leg; 21. First drive component; 22. Counterweight; 3. Gripping module; 30. First clamping plate; 31. Second clamping plate; 32. Second driving component; 33. Heat insulation pad; 4. Displacement module; 40. Lifting assembly; 41. Rotating assembly; 410. Rotary motor; 411. Fixing frame; 42. Telescopic push rod; 43. Lifting plate; 44. Lifting column; 45. Rotary disk. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0020] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0021] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0023] Please see Figures 1 to 3 This application provides a heat insulation cover loading and unloading device, which includes a chassis 1, a stabilizing module 2, a gripping module 3, and a displacement module 4. For ease of description, taking the chassis 1 located in a horizontal plane and at the bottom of the entire device as an example, the vertical and horizontal directions are defined.

[0024] To improve the flexibility and mobility of the heat shield loading and unloading device, the chassis 1 includes a plurality of pulleys 10 located at the bottom of the chassis 1, so that the entire device can move within a larger space.

[0025] The stabilizing module 2 is disposed on the chassis 1 and includes a support foot 20 and a first driving member 21 for driving the support foot 20 to move in the vertical direction. The support foot 20 has a first state of extending downward beyond the bottom of the pulley 10 and a second state of not extending downward beyond the bottom of the pulley 10, so as to further ensure the operational stability and safety of the heat insulation cover loading and unloading device.

[0026] Specifically, the first state is the supported state. When the support leg 20 is in this state, the support leg 20 extends downward beyond the bottom of the pulley 10, causing the pulley 10 to be suspended and unloaded. This enhances the stability of the chassis 1 and prevents the heat shield loading and unloading device from shifting due to vibration during operation.

[0027] The second state is the movable state. When the support leg 20 is in this state, the support leg 20 is raised upwards but does not exceed the bottom of the pulley 10. In this state, the chassis 1 is supported by the pulley 10, so that the heat insulation cover loading and unloading device can move flexibly by relying on the pulley 10.

[0028] The gripping module 3 includes a first clamping plate 30 and a second clamping plate 31, and is equipped with a second driving member 32 to drive the first clamping plate 30 and the second clamping plate 31 to move closer or further away. This allows the gripping module 3 to flexibly adapt to heat shields of different specifications or shapes, and to stably grip and release the heat shields.

[0029] The displacement module 4 is used to adjust the position of the gripping module 3. The displacement module 4 includes a lifting component 40 for adjusting the position of the gripping module 3 in the vertical direction and a rotating component 41 for adjusting the position of the gripping module 3 in the horizontal direction.

[0030] The lifting assembly 40 adjusts the gripping module 3 vertically, while the rotating assembly 41 adjusts it horizontally. The displacement module 4 can flexibly adjust the position of the gripping module 3 in three-dimensional space according to actual needs, thereby adapting to the working space requirements of different heights and planar distances.

[0031] This application achieves efficient handling of the heat insulation cover through the coordinated operation of the gripping module 3 and the displacement module 4, which effectively improves the transfer efficiency while reducing the safety risks of manual operation.

[0032] For example, in a specific work scenario, the displacement module 4 first adjusts the spatial position of the gripping module 3 to accurately move it to the first workstation (such as above the production line), where the gripping module 3 picks up the heat insulation cover located at that first workstation. Subsequently, the displacement module 4 adjusts the gripping module 3, which carries the heat insulation cover, to the second workstation (such as above the conveyor line), where the gripping module 3 releases the heat insulation cover to that workstation. In this way, a complete pick-and-place cycle is formed, thus completing the pick-and-place operation of the heat insulation cover without manual intervention.

[0033] Of course, the first station and the second station are not limited to the combination of production line and conveyor line. This application can realize the transfer of heat insulation cover from production line to conveyor line, and can also realize the reverse transfer of heat insulation cover from conveyor line to production line, and can also realize the transfer of heat insulation cover between different conveyor lines. This application does not limit this.

[0034] Because the center of gravity of the entire device may rise or shift when performing high-altitude retrieval and placement operations or grasping heavy heat shields, there is a risk of tipping over. Therefore, to further enhance the stability of the chassis 1, the stabilization module 2 also includes a counterweight 22 disposed on the support foot 20. This counterweight 22 can lower the overall center of gravity of the heat shield retrieval and placement device and increase the pressure of the chassis 1 on the ground, thereby improving operational safety.

[0035] In one possible implementation, the first drive element 21 is preferably a hydraulic cylinder. Using a hydraulic cylinder as a drive element can provide a smooth and large driving force to achieve stable support under heavy load conditions (such as when the support leg 20 is in the second state).

[0036] In a possible application scenario, such as Figure 2 As shown, the counterweight 22 is located at the end of the support leg 20. When the first drive member 21 drives the support leg 20 to switch from the second state to the first state, the counterweight 22 descends synchronously with the support leg 20 and contacts the ground, thereby stabilizing the chassis 1.

[0037] More specifically, each of the support feet 20 corresponds one-to-one with a pulley 10, and the support feet 20 are arranged beside the pulley 10. In this way, the supporting force of the support feet 20 can directly act on the chassis 1 structure near the pulley 10. When the two support each other, excessive bending moments within the chassis 1 frame can be avoided. For example, Figure 2 The diagram shows four pulleys 10, and four support blocks, counterweight blocks 22, and second drive components 32 are also provided.

[0038] In one possible embodiment, the heat shield loading and unloading device further includes a handrail 11. Workers can push the handrail 11 to move the chassis 1 to a designated position with the assistance of pulleys 10.

[0039] For example, such as Figure 1 As shown, the handrail 11 is located on the chassis 1 and can be symmetrically arranged on both sides of the displacement module 4, allowing workers to flexibly operate the handrail 11 to directly push the device in all directions. If the device needs to be reversed, the worker can directly operate the handrail 11 on the other side, thus enabling flexible pushing of the device even in narrow or complex working environments.

[0040] The handrail 11 includes a vertical section 110 extending along the vertical direction and a horizontal section 111 connected to the vertical section 110. This allows the horizontal force to be transmitted to the chassis 1 via the vertical section 110 when the operator grips the horizontal section 111 to apply a horizontal pushing force, thus enabling the operator to push the entire device with less effort.

[0041] The vertical section 110 and the pulley 10 are located on opposite sides of the chassis 1 along the vertical direction, which can effectively avoid uneven loading and ensure the stability and guiding accuracy of the device during movement.

[0042] For example, there are multiple gripping modules 3, which are arranged circumferentially around the rotating assembly 41. In this way, by rotating the rotating assembly 41 in a horizontal direction, different gripping modules 3 can be docked to their corresponding workstations to achieve simultaneous operation.

[0043] In a specific application scenario, two gripping modules 3 are provided, and the rotating component 41 performs a 180° reciprocating cycle to achieve synchronous horizontal displacement of the two gripping modules 3. In this way, while one gripping module 3 is performing a picking action, the other gripping module 3 is performing a releasing action, thereby effectively improving the picking and placing efficiency of the heat insulation cover.

[0044] For example, when the first clamping plate 30 and the second clamping plate 31 are driven by the second driving member 32 to move closer or further away, the second driving member 32 is preferably a double-rod cylinder. This ensures that the first clamping plate 30 and the second clamping plate 31 move synchronously and at the same speed towards each other to clamp the heat insulation pad 33, and move synchronously and at the same speed away from each other to release the heat insulation pad 33. Of course, the second driving member 32 can also be selected from other forms of linear drive elements, such as electric push rods, hydraulic cylinders, or lead screws, depending on the actual application scenario.

[0045] Combination Figure 3 As shown, a heat insulation pad 33 is provided on the side of the first clamping plate 30 facing the second clamping plate 31, and / or the heat insulation pad 33 is provided on the side of the second clamping plate 31 facing the first clamping plate 30. That is, the clamping surfaces of the first clamping plate 30 and the second clamping plate 31 that are in contact with the heat insulation cover can be covered with a heat insulation pad 33. In this way, heat transfer from the heat insulation cover at a high temperature is blocked, preventing deformation or damage to the first clamping plate 30 and the second clamping plate 31 due to heat conduction.

[0046] Based on the connection relationship between the lifting assembly 40, the rotating assembly 41, and the gripping module 3, the following two schemes can be divided: The first scheme directly drives the execution end (first clamping plate 30, second clamping plate 31) to operate through the telescopic push rod 42, which is more suitable for high-frequency, light-load operation scenarios; the second scheme drives the rotating assembly 41 to lift as a whole through the lifting column 44, which is more suitable for heavy-load operation scenarios.

[0047] In the first embodiment, when the lifting component 40 is located at the rotating component 41 and the gripping module 3 is fixed to the lifting component 40, the specific structural configuration of the displacement module 4 is as follows: the lifting component 40 includes a telescopic push rod 42 that can extend and retract along the vertical direction to adjust the vertical position of the gripping module 3. One end of the telescopic push rod 42 is connected to the rotating component 41, and the other end is connected to the gripping module 3.

[0048] In this first scheme, the high-precision adjustment of the gripping module 3 in the vertical direction is achieved by the telescopic push rod 42 extending and retracting in the vertical direction, and the first clamping plate 30 and the second clamping plate 31 are moved in the vertical direction by the telescopic push rod 42.

[0049] The lifting and lowering motion of the gripping module 3 is independently driven by the telescopic push rod 42, and the rotational motion of the gripping module 3 is independently driven by the rotating component 41. This achieves complete decoupling of the two directions of motion (up and down and horizontal directions), avoids mutual interference, and facilitates precise positioning of the gripping module 3 in three-dimensional space.

[0050] Of course, in order to improve the adjustability of the first solution in the vertical direction, the rotating assembly 41 includes a lifting plate 43 spaced apart from the chassis 1 along the vertical direction, a lifting column 44 connecting the lifting plate 43 and the chassis 1, and a rotating disk 45 located on the lifting plate 43. One end of the telescopic push rod 42 is connected to the rotating disk 45. The rotating disk 45 can rotate around the central axis of the rotating disk 45, thereby driving the telescopic push rod 42 and the gripping module 3 to rotate together, so as to adjust the position of the gripping module 3 in the horizontal direction.

[0051] Thus, based on the high-precision adjustment of the telescopic push rod 42, the liftable structure of the lifting plate 43 and the lifting column 44 can provide a supporting foundation for the rotating disk 45 and the telescopic push rod 42 and gripping module 3 connected to the rotating disk 45. It can also drive the rotating disk 45 and the telescopic push rod 42 and gripping module 3 connected to the rotating disk 45 to rise and fall significantly, thereby increasing the adaptability of the device to different working spaces.

[0052] In the second embodiment, when the rotating component 41 is located on the lifting component 40 and the gripping module 3 is fixed to the rotating component 41, the specific structural configuration of the displacement module 4 is as follows: the lifting component 40 includes a lifting plate 43 spaced apart from the chassis 1 along the vertical direction and a lifting column 44 connecting the lifting plate 43 and the chassis 1; wherein, the rotating component 41 is located on the lifting plate 43, and the lifting column 44 can be raised and lowered along the vertical direction to adjust the position of the gripping module 3 in the vertical direction.

[0053] In this second scheme, the rotating component 41 and the gripping module 3 fixed to the rotating component 41 are placed on the lifting plate 43, and the lifting column 44 drives the synchronous lifting of the entire rotating component 41 and the gripping module 3, which can lift the rotating component 41 in a large range in the vertical direction.

[0054] Of course, in order to improve the adaptability of the second solution to high frequency and light load, the gripping module 3 also includes a telescopic push rod 42 that can drive the first clamping plate 30 and the second clamping plate 31 to move in the vertical direction. One end of the telescopic push rod 42 is connected to the rotating component 41, and the other end is connected to the second driving component 32.

[0055] Thus, based on the overall large-range lifting and positioning of the lifting column 44, the gripping module 3 achieves rapid adjustment of the first clamping plate 30 and the second clamping plate 31 through the telescopic push rod 42. This allows for small-range height adjustments during pick-up and drop operations without frequently driving the heavily loaded lifting column 44; the telescopic push rod 42 of the gripping module 3 is sufficient. This improves the work cycle and reduces operating energy consumption.

[0056] The second scheme differs from the first scheme in that the connection method of the lowering component and the rotating component 41 in the displacement module 4 is different, in order to meet different working conditions.

[0057] Furthermore, regardless of whether the first scheme (the lifting component 40 is located on the rotating component 41, and the gripping module 3 is fixed to the lifting component 40) or the second scheme (the rotating component 41 is located on the lifting component 40, and the gripping module 3 is fixed to the rotating component 41) is adopted, it can have the following possible implementation methods.

[0058] In one possible specific implementation, the rotating assembly 41 further includes a rotating motor 410 for driving the rotating disk 45 to rotate, and a fixing frame 411 for fixing the rotating motor 410. The fixing frame 411 is disposed on the lifting plate 43 to improve the stability of the rotating disk 45 during rotation.

[0059] In another possible specific implementation, the driving source of the lifting column 44 can be a hydraulic cylinder, which can provide a large torque to the lifting column 44 to ensure that the lifting plate 43 is raised and lowered smoothly.

[0060] Specifically, the lifting columns 44 are arranged at the four corners of the lifting plate 43, and the hydraulic cylinders are located at the center of the lifting columns 44 to ensure the synchronous lifting of the four lifting columns 44. In this way, the lifting or lowering height of the four corners of the lifting plate 43 can be kept consistent, so as to avoid affecting the positioning accuracy of the rotating disk 45 above the lifting plate 43 and the telescopic push rod 42 and the gripping module 3 connected to the rotating disk 45.

[0061] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heat insulation cover loading and unloading device, characterized in that, include: The chassis includes a plurality of pulleys located at the bottom of the chassis; A stabilizing module is disposed on the chassis. The stabilizing module includes a support foot and a first driving member that drives the support foot to move in a vertical direction. The support foot has a first state in which it extends downward beyond the bottom of the pulley and a second state in which it does not extend beyond the bottom of the pulley. The gripping module includes a first clamping plate, a second clamping plate, and a second driving member that drives the first clamping plate and the second clamping plate to move closer to or away from each other. A displacement module is used to adjust the position of the gripping module. The displacement module includes a lifting component for adjusting the position of the gripping module in the vertical direction and a rotating component for adjusting the position of the gripping module in the horizontal direction. Wherein, the lifting component is located on the rotating component, and the gripping module is fixed to the lifting component, or the rotating component is located on the lifting component, and the gripping module is fixed to the rotating component.

2. The heat insulation cover loading and unloading device according to claim 1, characterized in that, The lifting assembly includes a telescopic push rod that can extend and retract along the vertical direction to adjust the vertical position of the gripping module. One end of the telescopic push rod is connected to the rotating assembly, and the other end is connected to the gripping module.

3. The heat insulation cover loading and unloading device according to claim 2, characterized in that, The rotating assembly includes a lifting plate spaced apart from the chassis along the vertical direction, a lifting column connecting the lifting plate and the chassis, and a rotating disk located on the lifting plate. One end of the telescopic push rod is connected to the rotating disk. The rotating disk can rotate around its central axis to adjust the position of the gripping module in the horizontal direction.

4. The heat insulation cover loading and unloading device according to claim 1, characterized in that, The lifting assembly includes a lifting plate spaced apart from the chassis along the vertical direction and a lifting column connecting the lifting plate and the chassis; wherein, the rotating assembly is located on the lifting plate, and the lifting column can be raised and lowered along the vertical direction to adjust the position of the gripping module in the vertical direction.

5. The heat insulation cover loading and unloading device according to claim 4, characterized in that, The gripping module also includes a telescopic push rod that can drive the first clamping plate and the second clamping plate to move along the vertical direction. One end of the telescopic push rod is connected to the rotating component, and the other end is connected to the second driving component.

6. The heat insulation cover loading and unloading device according to claim 4, characterized in that, The rotating assembly includes a rotating disk located on the lifting plate, and a plurality of gripping modules are arranged at circumferential intervals along the rotating disk.

7. The heat insulation cover loading and unloading device according to claim 1, characterized in that, The stabilizing module includes a counterweight block disposed on the support foot.

8. The heat insulation cover loading and unloading device according to claim 1, characterized in that, The heat insulation cover retrieval device also includes a handrail.

9. The heat insulation cover loading and unloading device according to claim 8, characterized in that, The handrail is located on the chassis and includes a vertical section extending along the vertical direction and a horizontal section connected to the vertical section. The vertical section and the pulley are located on opposite sides of the chassis along the vertical direction.

10. The heat insulation cover loading and unloading device according to any one of claims 1 to 9, characterized in that, A heat insulation pad is provided on the side of the first clamping plate facing the second clamping plate, and / or the heat insulation pad is provided on the side of the second clamping plate facing the first clamping plate.

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