Buffering device of covering part and conveying system

Abstract

The utility model provides a buffering device for a covering part and a conveying system, the buffering device comprises a guide structure, the guide structure is used for reducing the vertical distance between one or more points of the covering part and a conveying belt when the covering part falls to the conveying belt; and the supporting structure is used for supporting the guiding structure, and at least part of the supporting structure is located above the conveying belt. Due to the adoption of the guide structure, when the covering part is placed on the conveyor belt, the area with weak strength is firstly in contact with the guide structure, and when the front part of the covering part moves on the conveyor belt, the vertical distance between the area with weak strength and the conveyor belt can be gradually reduced under the action of the guide structure; and the impact force borne by the final weak-strength area when the weak-strength area falls onto the conveying belt is reduced, so that the deformation probability of the weak-strength area is reduced. The length and the angle of the guide structure can be adjusted according to the conveying speed of the conveying belt, and the automatic adjusting function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-scale cover transmission, in particular to a buffer device and a conveying system for a cover. Background Art

[0002] When large covers are transported on a conveyor belt, the parts and the conveyor belt are in either point contact or surface contact. For surface contact, only two surfaces may be required, but for point contact, at least three points of the parts must be on the conveyor belt to keep the parts stable.

[0003] When a part makes point contact with the conveyor belt, due to size and shape limitations, some points typically make contact first, while others lag behind. This lag occurs when the part's weight is applied to the part, subjecting it to a greater impact. If the part is sufficiently strong, it will not deform regardless of the height from which it falls. However, for covering components like the side panels, one of the contact points is the taillight mating point, a sharp point that is relatively weak due to the surrounding mating relationship. When the side panel mold is completed, the grabbing tool grabs the side panel out of the mold and places it flat on the conveyor belt. First, the two points on the side contact the conveyor belt, and then the point at the taillight mating point contacts the conveyor belt when it falls. The taillight mating point has a certain distance from the horizontal surface. Due to the inertia of the falling side panel, the sharp point at the rear of the side panel collides with the conveyor belt when it contacts the conveyor belt, causing the taillight mating point to collapse and deform, forming a pit defect on the surface of the side panel outer panel. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a buffer device and a conveying system for a cover, which is used to solve the problem in the prior art that the last point where the component contacts the conveyor belt when falling is due to the action of gravity inertia, and when it contacts the conveyor belt, it is equivalent to a collision, which may cause deformation of the component.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides, on the one hand, a buffer device for a cover, comprising:

[0006] A guide structure for reducing the vertical distance between one or more points of the cover and the conveyor belt when the cover falls onto the conveyor belt;

[0007] The support structure is used to provide support for the guide structure, and the support structure is at least partially located above the conveyor belt.

[0008] Furthermore, the guide structure includes a guide member, which has a receiving portion and a sliding portion located downstream of the receiving portion in the conveying direction of the conveyor belt, the receiving portion is used to receive the placed covering member, and the sliding portion is used to guide the covering member to slide out of the guide member from the receiving portion to the sliding portion.

[0009] Furthermore, the guide structure also includes a first adjustment component, the guide member is connected to the first adjustment component, and the first adjustment component is used to adjust the vertical height of the side of the guide member close to the conveyor belt from the conveyor belt.

[0010] Furthermore, the first adjustment component includes a first adjustment power and a first gear connected to an output shaft of the first adjustment power, and the guide member is provided with an adjustment tooth engaged with the first gear.

[0011] Furthermore, it also includes a second adjustment component, which is used to adjust the angle between the guide member and the conveyor belt.

[0012] Furthermore, the second adjustment assembly includes an adjustment seat and a second adjustment power connected to the adjustment seat, the guide member is slidingly connected to the adjustment seat, and the second adjustment power is used to rotate the adjustment seat to change the angle between the guide member and the conveyor belt.

[0013] Furthermore, it also includes a first base, the adjustment seat is located in the first base, and both sides of the adjustment seat are rotatably connected to the first base.

[0014] Furthermore, the support structure includes a support frame, a third adjustment component is installed on the support frame, the guide structure is installed on the third adjustment component, and the third adjustment component is used to change the position of the guide structure in the width direction of the conveyor belt.

[0015] Furthermore, the third adjustment component includes a third adjustment power, a lead screw and a slider, the third adjustment power is used to control the rotation of the lead screw, the slider is sleeved on the lead screw and connected by a thread, and the guide structure is connected to the slider.

[0016] On the other hand, the present invention further provides a conveying system for covers, comprising a conveyor belt and the above-mentioned buffer device, wherein both sides of the support structure are located outside the conveyor belt, and the guide structure is located above the conveyor belt.

[0017] As described above, the buffer device provided by the present invention has the following beneficial effects: Due to the use of a guide structure, when the cover is placed on the conveyor belt, the relatively weak area first contacts the guide structure. As the front portion of the cover moves on the conveyor belt, the guide structure gradually reduces the vertical distance between the weak area and the conveyor belt. This ultimately reduces the impact force on the weak area when it falls onto the conveyor belt, thereby reducing the probability of deformation. The present invention also provides an automatic adjustment function for the length and angle of the guide structure according to the conveyor belt's speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic structural diagram of the transmission system of the utility model;

[0019] Figure 2 for Figure 1 A magnified view of middle A;

[0020] Figure 3 Schematic diagram of the structure of the buffer device;

[0021] Figure 4 for Figure 3 Enlarged view of middle B;

[0022] Figure 5 Structural diagram of the guide structure Figure 1 ;

[0023] Figure 6 Structural diagram of the guide structure Figure 2 ;

[0024] Figure 7 A top view of the guide member;

[0025] Figure 8 It is a structural diagram of the adjustment seat;

[0026] Figure 9 The working flow diagram of the transmission system provided by the utility model;

[0027] Figure 10 A simplified diagram of the transmission system.

[0028] Part Number Description

[0029] 10-guide structure, 101-guide member, 102-first adjusting power, 103-first gear, 104-adjusting seat, 105-connecting ear, 106-body, 107-perforation, 108-opening, 109-rotating shaft, 110-second adjusting power, 111-first base, 112-second gear, 113-third gear, 114-third adjusting power, 115-second base, 116-slider, 117-slide rail, 118-limit sensor, 119-connecting plate, 120-sensing block, 20-support structure, 201-support frame, 30-conveyor belt. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0031] It should be noted that the diagrams provided in this embodiment are only used to illustrate the basic concept of the present invention. Therefore, the diagrams only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complex. The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the conditions for the implementation of the present invention, so they have no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0032] See Figure 1 The present invention provides a cushioning device for a cover, comprising a guide structure 10 and a support structure 20. The guide structure 10 is used to reduce the vertical distance between one or more points of the cover and the conveyor belt 30 when the cover falls onto the conveyor belt 30. The support structure 20 is used to provide support for the guide structure 10 so that the force of the guide structure 10 is sufficient to enable the component to slide on the guide structure 10. The support structure 20 is installed above the conveyor belt 30.

[0033] The support structure 20 can be suspended or ground-mounted. It is preferably a door-shaped structure mounted on the ground for ease of movement. The ends of the support structure 20 are located outside the conveyor belt 30. The bottom can be fixed to the ground or equipped with rollers, allowing the position of the support structure 20 to be adjusted.

[0034] The support structure 20 includes a support frame 201, with a third adjustment assembly mounted on top of the support frame 201. The guide structure 10 is mounted on the third adjustment assembly, and the third adjustment assembly can be used to adjust the position of the guide structure 10 along the width of the conveyor belt 30. The third adjustment assembly can use pneumatic, hydraulic, or electric means to control the movement of the guide structure 10.

[0035] The third adjustment component preferably adopts a servo screw slide type, so as to accurately control the position of the guide structure 10. The third adjustment component includes a third adjustment power 114, a screw, a slider 116 and a slide rail 117, and the slider 116 is threadedly connected to the screw. The third adjustment power 114 controls the rotation of the screw, and the screw rotates while driving the slider 116 to rotate. A second base 115 is installed on the third adjustment component, and the second base 115 is connected to the slider 116. The two sides of the second base 115 can be connected to the slider 116 through an L-shaped connecting plate 119. The second base 115 cooperates with the slide rail 117 through the connecting plate 119, so that the position of the second base 115 will not be deflected.

[0036] Limit sensors 118 are mounted on both ends of the sidewalls of the third adjustment assembly. These limit the sliding position of the second base 115, preventing it from moving beyond the travel of the slide rail 117. A sensing block 120 is mounted on the connecting plate 119. When the sensing block 120 contacts the sensor, the third adjustment power 114 stops outputting power.

[0037] The length of the slide rail 117 can be the same as the width of the top of the support structure 20, or it can be slightly shorter. The second base 115 is open at one end and closed at the rest. Figure 4 As shown, this can prevent dust and other impurities from entering the interior of the guide structure 10 as much as possible.

[0038] Slide rails 117 are provided above and below the lead screw. The upper and lower slide rails 117 are connected by a connecting plate 119. Both ends of the lead screw are rotatably connected to the connecting plate 119. The connecting plate 119 provides support for the lead screw.

[0039] The guide structure 10 includes a guide member 101 and a first adjustment component. The guide member 101 is connected to the first adjustment component. The first adjustment component is used to adjust the vertical height of the guide member 101 close to the conveyor belt 30 from the conveyor belt 30. Figure 1 and Figure 3 As shown, the guide member 101 is a long strip of guide rod. The guide member 101 has a receiving portion and a slide-out portion located downstream of the receiving portion in the conveying direction of the conveyor belt. The receiving portion is used to receive the placed cover, that is, the area when the cover falls onto the guide member 101. The slide-out portion is used to guide the cover to slide out of the guide member 101, and the cover moves from the receiving portion to the slide-out portion. The guide member 101 descends monotonically and continuously. The preferred guide member 101 is straight and tilted from high to low. The guide member 101 tilts downward along the direction of advancement of the conveyor belt 30. The guide member 101 descends monotonically and continuously, that is, the guide member 101 is generally designed to be arc-shaped. The arc shape is not conducive to the movement of the cover, and the guide member is continuous, not segmented, so that the sliding of the cover is smooth.

[0040] When the end picker grabs the parts and drops them onto the conveyor belt 30, the areas with stronger strength first contact the conveyor belt 30, and the areas with weaker strength do not fall directly onto the conveyor belt 30, but first contact the guide member 101. Then the parts move forward under the movement of the conveyor belt 30, and the vertical distance between the areas with weaker strength and the conveyor belt 30 gradually decreases.

[0041] For example, when the side panel previously fell onto the conveyor belt 30, after the end picker leveled the side panel, the vertical distance between the tail weaker area and the conveyor belt 30 was about 50 mm. Under the action of gravitational potential energy, this weaker area fell and collided with the conveyor belt 30. The higher the height, the greater the gravitational potential energy. After the guide 101 is installed, the bottom of the guide 101 can be slightly higher than the conveyor belt 30 without affecting the movement of the conveyor belt 30. For example, the bottom of the guide 101 can be slightly higher than the conveyor belt 30 by 2-3 mm. The gravitational potential energy height of the side panel was 50 mm before, but now it is 2-3 mm. Under the condition of unchanged gravity, the gravitational potential energy is reduced by dozens of times. The impact force is related to the gravitational potential energy. The smaller the impact force on the side panel, the lower the probability of deformation of the side panel.

[0042] The guide member 101 can be made of metal, which is strong enough. However, in order to reduce the friction between the guide member 101 and the components, a layer of rubber can be wrapped around the outside of the guide member 101 to prevent the components from being scratched. The side of the component that contacts the guide member 101 is the side facing the interior of the vehicle, and the weaker area at the rear of the side outer panel will not be deformed when sliding against the guide member 101.

[0043] Because different components have varying masses and their weak areas can withstand different impact forces, each component has a corresponding calculated drop height. A second adjustment assembly and a first adjustment assembly are mounted within the third adjustment base. The first adjustment assembly is used to adjust the vertical height difference between the bottom of the guide member 101 and the conveyor belt 30, while the second adjustment assembly is used to adjust the angle between the guide member 101 and the horizontal plane.

[0044] The first adjustment assembly includes a first adjustment power 102 and a first gear 103 connected to the output shaft of the first adjustment power 102 . The guide member 101 is provided with an adjustment tooth engaged with the first gear 103 .

[0045] A plurality of adjustment teeth are provided along the length direction of the guide member 101. The first adjustment power 102 adopts a servo motor. A first gear 103 is installed on the output shaft of the first adjustment power 102. The first gear 103 is engaged with the guide member 101 to control the bottom of the guide member 101 to move toward or away from the conveyor belt 30.

[0046] The first base 111 is mounted within the second base 115. The second adjustment assembly is mounted within the first base 111. The second adjustment assembly is used to adjust the angle of the guide member 101 relative to the conveyor belt 30. The second adjustment assembly includes an adjustment seat 104 and a second adjustment power 110 connected to the adjustment seat 104. The guide member 101 is slidably connected to the adjustment seat 104. The second adjustment power 110 is used to rotate the adjustment seat to change the angle between the guide member 101 and the conveyor belt 30.

[0047] The cross section of the first base 111 is U-shaped. The adjustment base 104 is located inside the first base 111 . Both sides of the adjustment base 104 are rotatably connected to the inner wall of the first base 111 via the rotating shaft 109 . The adjustment base 104 can change its angle relative to the first base 111 .

[0048] The adjustment seat 104 includes a connecting lug 105, through which the output shaft of the first adjustment power 102 passes, which is equivalent to the first adjustment power 102 being installed on the connecting lug 105. Both sides of the connecting lug 105 are rotatably connected to the inner wall of the first base 111.

[0049] However, in order to better control the guide member 101, the adjustment seat 104 further includes a body 106. The body 106 is connected to the connecting lug 105 and can be integrally formed. The entire adjustment seat 104 is L-shaped when viewed from the side.

[0050] The main body 106 mainly provides a support for the guide member 101, so that when the guide member 101 adjusts the distance between its bottom and the conveyor belt 30, in addition to the first gear 103 being connected to the guide member 101, the main body 106 of the adjustment seat 104 also provides support force for the guide member 101.

[0051] In order to save space, a through hole 107 is set in the main body 106. 107 is set along the length direction of the guide member 101. The guide member 101 passes through the through hole 107. An opening 108 is set on the side of the main body 106 close to the first gear 103. A part of the first gear 103 can pass through the opening 108 to fit the gear of the guide member 101.

[0052] In order to enable the guide member 101 to move smoothly in the body 106 , a guide groove may be provided on the inner wall of the body 106 , and a guide block may be provided on the outer wall of the guide member 101 .

[0053] The output shaft of the second adjusting power 110 is connected to a second gear 112, and a third gear 113 is sleeved on the rotating shaft 109 of the adjusting seat 104. The third gear 113 is fixedly connected to the rotating shaft 109, and the rotating shaft 109 and the adjusting seat 104 are also fixedly connected. The adjusting seat 104 and the rotating shaft 109 cannot rotate relative to each other, so that the angle of the adjusting seat 104 can be changed. The rotation of the second adjusting power 110 drives the second gear 112 and the third gear 113 to rotate, thereby controlling the angle of the adjusting seat 104. Since the guide member 101 and the first adjusting power 102 are equivalent to being connected to the adjusting seat 104 as a whole, when the angle of the adjusting seat 104 changes, the angle of the guide member 101 also changes accordingly.

[0054] On the other hand, the present application also provides a conveying system for covers, comprising a conveyor belt 30 and the aforementioned buffer device, wherein the buffer device is located above the conveyor belt 30, the two sides of the support frame 201 are located outside the conveyor belt 30, and the guide structure 10 is located above the conveyor belt 30. Rollers can be installed at the bottom of the support frame 201 to adjust the position of the support frame 201. The support frame 201 can also be set to be height-adjustable, multi-section, or liftable.

[0055] Working process: According to the shape of the component, the output of the third adjustment power 114 is controlled to adjust the position of the guide member 101 in the width direction of the conveyor belt 30. The vertical distance between the bottom of the guide member 101 and the conveyor belt 30 is adjusted by the first adjustment power 102, and the horizontal angle between the guide member 101 and the conveyor belt 30 is adjusted by the second adjustment power 110. When the end tool grabs the component from the mold and places it on the conveyor belt 30, the stronger part of the component first contacts the conveyor belt 30, and the weaker area contacts the guide member 101. The conveyor belt 30 moves forward, driving the component forward as well. Then, the vertical distance between the weaker area and the conveyor belt 30 gradually decreases. Finally, it can fall onto the conveyor belt 30 with almost a slight height difference, so that the gravitational potential energy of the weaker area is as small as possible, reducing the impact on the weaker area and thus reducing deformation.

[0056] Regarding the transportation problem of large covering parts, such as side outer panels, after they are produced and formed by molds, since there is a sharp point structure at the taillight mating point of the side outer panel, the strength here is relatively weak. Before proposing the buffer device, this applicant made various attempts to try to improve the problem of easy deformation at the taillight mating point of the side outer panel.

[0057] One method is to add support at the flange of the D-pillar outer panel to reduce the impact on the taillights of the side outer panel. After the side outer panel is delivered to its place, the support is cut off. Although this solution can reduce the impact on the sharp corners of the taillights and reduce deformation, the subsequent support cannot be eliminated by cutting the edges, resulting in the inability to weld the cut edges during welding. Therefore, this solution is not feasible.

[0058] Another method is to install a bracket support on the conveyor belt 30, and place the side outer panel on the bracket support. For example, supporting foam can be placed on the conveyor belt 30. However, since the conveyor belt 30 is circulated, the supporting foam needs to be recovered and placed, either by manual recovery or by robotic arms, which increases the cost.

[0059] Another method is to suspend the taillight mating part of the side outer panel so that the taillight mating part does not contact the conveyor belt 30. For example, the taillight mating part is located outside the conveyor belt 30, which is equivalent to suspending the side outer panel relative to the conveyor belt 30. The side outer panel is tilted outward relative to the conveyor belt 30. In this solution, the side outer panel may fall off the conveyor belt 30 during transportation.

[0060] After verification of various solutions, the buffer device provided by the utility model is simple in structure, lowest in cost, highest in possibility and best in effect.

[0061] The following steps are used when the cover is transported on the conveyor belt 30:

[0062] Component data and the conveying speed of the conveyor 30 are acquired.

[0063] The component data primarily includes information about whether there are weak areas at the point where the component contacts the conveyor belt 30, as well as the component's mass. Furthermore, the maximum height of the weak area when it descends is calculated before the component is conveyed. In one embodiment of the present invention, the component data is first used to determine whether the component is a side panel. If it is not, the component does not require a buffer and can be placed directly onto the conveyor belt 30 using an end effector. In this case, the guide structure 10 is positioned to the side of the support frame 201, preventing interference with the component's descent.

[0064] If the part is a side panel, the system then determines whether it is a left or right side panel. Since the left and right side panels are symmetrically arranged, the positions of the guide structure 10 are also different. If the part is determined to be a left side panel, the third regulating power 114 rotates N1 revolutions in the forward direction, moving the guide structure 10 to the first position. After the side panel transfer is complete, the third regulating power 114 rotates N1 revolutions in the reverse direction to reset the guide structure 10. If the part is determined to be a right side panel, the third regulating power 114 rotates N2 revolutions, moving the guide structure 10 to the second position. After the side panel transfer is complete, the third regulating power 114 rotates N2 revolutions in the reverse direction to reset the guide structure 10.

[0065] The angle of the guide 101 is adjusted by the component data and the conveying speed of the conveyor belt 30, and the position of the point where the component contacts the guide is determined.

[0066] The vertical height of the bottom of the guide member 101 from the conveyor belt 30 is related to the weight of the component itself and the gravitational potential energy that its weak area can withstand. The maximum gravitational potential energy that the weak area of each component can withstand is pre-stored in the system before transportation.

[0067] The angle between the guide member 101 and the conveyor belt 30 is related to the conveying speed of the conveyor belt 30 .

[0068] In order not to affect the production speed, the time t for the parts to fall from the guide member 101 to the conveyor belt 30 is generally set to be constant. Figure 10 As shown, the length of the guide member 101 Where H is the vertical distance between the bottom of the guide member 101 and the conveyor belt 30, V is the conveying speed of the conveyor belt 30, and L is the length of the guide member 101 from point C where the parts are placed to the end close to the conveyor belt 30.

[0069] Generally, for the same type of component, the vertical distance H between the bottom of the guide 101 and the conveyor belt 30 is constant, and the time t for the component to fall from the guide 101 to the conveyor belt 30 is constant. Therefore, the length L of the guide 101 is related to the conveying speed of the conveyor belt 30. If the speed of the conveyor belt 30 is fast, the length L of the guide 101 is relatively long, and the point C where the end tool lowers the component onto the guide 101 is farther away from one side of the conveyor belt 30; on the contrary, when the speed of the conveyor belt 30 decreases, the length L of the guide 101 decreases, and the point C where the end tool lowers the component onto the guide 101 is closer to one side of the conveyor belt 30.

[0070] The angle θ between the guide member 101 and the horizontal plane of the conveyor belt 30 is arctan[H / (v*t)]. Assuming the time t for a component to fall from the guide member 101 onto the conveyor belt 30 is constant, and for the same component, the vertical distance H between the bottom of the guide member 101 and the conveyor belt 30 is constant, the angle θ between the guide member 101 and the horizontal plane of the conveyor belt 30 can also be determined. The faster the conveyor belt 30, the smaller the angle θ between the horizontal planes of the conveyor belt 30, and the slower the conveyor belt 30, the larger the angle θ between the horizontal planes of the conveyor belt 30.

[0071] After the position and angle of the guide 101 are determined, the end picker grabs the component from the mold and supports at least one point of the cover on the conveyor belt 30, so that the part with greater strength is in contact with the conveyor belt 30, and at least one point of the weaker area on the cover is in contact with the guide 101. The cover is supported by the guide 101, and the conveyor belt 30 moves forward, driving the cover forward as well. Then, the vertical distance between the weaker area and the conveyor belt 30 gradually becomes smaller, and finally the cover can almost fall from the guide 101 to the conveyor belt 30 with a slight height difference.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A cushioning device for a cover, characterized in that: include: A guide structure for reducing the vertical distance between one or more points of the cover and the conveyor belt when the cover falls onto the conveyor belt; The support structure is used to provide support for the guide structure, and the support structure is at least partially located above the conveyor belt.

2. The cushioning device for a cover according to claim 1, characterized in that: The guide structure includes a guide member, which has a receiving portion and a slide-out portion located downstream of the receiving portion in the conveying direction of the conveyor belt. The receiving portion is used to receive the placed covering member, and the slide-out portion is used to guide the covering member to slide out from the guide member, from the receiving portion to the slide-out portion.

3. The cushioning device for a cover according to claim 2, characterized in that: The guide structure also includes a first adjustment component, the guide member is connected to the first adjustment component, and the first adjustment component is used to adjust the vertical height of the side of the guide member close to the conveyor belt from the conveyor belt.

4. The cushioning device for a cover according to claim 3, characterized in that: The first adjustment component includes a first adjustment power and a first gear connected to the output shaft of the first adjustment power, and the guide member is provided with an adjustment tooth engaged with the first gear.

5. The cushioning device for a cover according to any one of claims 2 to 4, characterized in that: It also includes a second adjustment component, which is used to adjust the angle between the guide member and the conveyor belt.

6. The cushioning device for a cover according to claim 5, characterized in that: The second adjustment assembly includes an adjustment seat and a second adjustment power connected to the adjustment seat. The guide is slidably connected to the adjustment seat. The second adjustment power is used to rotate the adjustment seat to change the angle between the guide and the conveyor belt.

7. The cushioning device for a cover according to claim 6, characterized in that: It also includes a first base, the adjustment seat is located in the first base, and both sides of the adjustment seat are rotatably connected to the first base.

8. The cushioning device for a cover according to claim 1, characterized in that: The supporting structure includes a supporting frame, a third adjusting component is installed on the supporting frame, the guiding structure is installed on the third adjusting component, and the third adjusting component is used to change the position of the guiding structure in the width direction of the conveyor belt.

9. The cushioning device for a cover according to claim 8, characterized in that: The third adjustment component includes a third adjustment power, a lead screw and a slider. The third adjustment power is used to control the rotation of the lead screw. The slider is sleeved on the lead screw and connected by a thread. The guide structure is connected to the slider.

10. A conveying system for covering parts, characterized in that: It comprises a conveyor belt and the buffer device according to any one of claims 1 to 9, wherein both sides of the support structure are located outside the conveyor belt, and the guide structure is located above the conveyor belt.

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