Sheet material transport fastening device and conveying tray

Abstract

This invention proposes a sheet metal transport and fastening device and a conveyor tray, comprising: a support plate on which several workpieces are placed, and several positioning holes are provided around the workpieces; an insertion member, which is vertically inserted into the positioning holes and rotates circumferentially around the positioning holes; a locking part on the insertion member, which locks the insertion member in the positioning holes; and a clamping member, which is threadedly connected to the insertion member and moves closer to or away from the side of the workpiece when the insertion member rotates relative to the positioning holes. In this invention, one end of the insertion member is locked into the positioning hole by the locking part to ensure the stability of the insertion member and the support plate. The rotation of the insertion member relative to the positioning holes causes the clamping member to move closer to or away from the side of the workpiece, thereby achieving the clamping member's contact with and separation from the side of the workpiece, and achieving the fastening or loosening of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of sheet metal transportation technology, and in particular to a sheet metal transportation fastening device and a conveying pallet. Background Technology

[0002] In the sheet material transportation process, the pallet serves as the core carrier of the sheet material. The combination of the pallet and the insert rod is a common basic positioning method in the industry. The insert rod is inserted into a preset position on the pallet, and then the insert rod and the sheet material are wrapped with a stretch film to limit the position of the stacked sheet material.

[0003] In the prior art, the fast adjustable trimming device for sheet metal transportation disclosed in CN222906775U uses a positioning rod and an adjusting screw to drive a trimming push plate. This solves the problems of gaps easily appearing between the traditional rod and the sheet metal, requiring additional filler, and the time-consuming and labor-intensive manual trimming. It achieves rapid trimming of the sheet metal and adjusts to different stacking heights. However, in practical applications, the existing trimming device still has shortcomings that urgently need optimization: The existing trimming device is directly plugged into the hexagonal socket. In long-distance transportation or on bumpy roads, the device is prone to displacement due to vibration, which affects the stability of the trimming push plate against the material. The existing trimming device is still insufficient in terms of stability with the pallet.

[0004] Therefore, a sheet metal transport fastening device and a conveying pallet are proposed to solve the technical problem of insufficient stability of existing trimming devices and pallets, so as to ensure continuous clamping of the sheet metal workpiece. Summary of the Invention

[0005] In view of this, the present invention proposes a sheet metal transport fastening device and a conveying pallet to solve the technical problem of insufficient stability of existing trimming devices and pallets, so as to ensure continuous clamping of the sheet metal workpiece.

[0006] This invention proposes a sheet metal transport and fastening device, comprising: A support plate on which several workpieces are placed, and several positioning holes are provided around the several workpieces. A plug-in component is inserted vertically into the positioning hole, and the plug-in component rotates circumferentially along the positioning hole. The plug-in component is provided with a snap-fit ​​part, which locks the plug-in component into the positioning hole. A clamping member is threadedly connected to the insertion member, and when the insertion member rotates relative to the positioning hole, the clamping member moves closer to or further away from the side of the workpiece.

[0007] Based on the above technical solution, preferably, the plug-in component includes a plug-in rod, a connecting sleeve, and a snap-fit ​​component. The connecting sleeve is adjusted vertically and fitted onto the outside of the plug-in rod. The connecting sleeve is adapted to the positioning hole and inserted into the positioning hole. The snap-fit ​​component is disposed on the connecting sleeve and is used to lock the connecting sleeve. The snap-fit ​​component serves as the snap-fit ​​part.

[0008] Based on the above technical solution, preferably, the connecting sleeve is threadedly connected to the plug rod, and the connecting sleeve is provided with a stop member. When the plug rod is screwed into the connecting sleeve to a predetermined depth, the stop member abuts against the snap-fit ​​member.

[0009] Based on the above technical solution, preferably, the clamping component includes: At least one pair of threaded parts, at least one pair of hinged parts, and an abutment are arranged sequentially along the horizontal direction. The at least one pair of threaded parts are threadedly connected to the plug rod. The at least one pair of hinged parts are hinged to the at least one pair of threaded parts in a corresponding manner. The other ends of the at least one pair of hinged parts are hinged to each other and rotatably disposed on the abutment. The threads of two adjacent threaded parts have opposite directions of rotation.

[0010] Based on the above technical solution, preferably, the abutting member is provided with a through groove, the contour of which is adapted to the contour of the hinge member.

[0011] Based on the above technical solution, preferably, the hinged member is hinged to the threaded member through a rotating shaft, and the abutting member is provided with a relief groove, which is used to avoid the rotating shaft.

[0012] Based on the above technical solution, preferably, the side of the abutment member that contacts the hinge member is provided with a protruding ridge.

[0013] Based on the above technical solution, preferably, the abutting member has an elastic layer on one side of the workpiece.

[0014] Based on the above technical solution, preferably, the end of the plug rod away from the connecting sleeve is provided with an operating part.

[0015] On the other hand, the present invention also provides a sheet metal conveying pallet, wherein the conveying pallet is provided with the sheet metal transport fastening device as described above.

[0016] The sheet metal transport and fastening device and conveyor pallet provided by the present invention have the following advantages compared with the prior art: (1) When in use, one end of the plug-in component is plugged into the inside of the positioning hole through the snap-fit ​​part to ensure the stability of the plug-in component and the bearing plate. In addition, the plug-in component rotates relative to the positioning hole, so that the clamping component moves closer to or away from the side of the workpiece, so as to realize the clamping component and the side of the workpiece to hold and separate, thereby achieving the fastening or loosening of the workpiece. (2) The abutment can accommodate the hinge through the groove, so that the whole device can be completely folded, and the folded state of the device will not affect its use. Therefore, even when working in a confined space, the fastening effect of the device is not affected in any way. The device can be folded into a smaller state first. When unfolded and pressed, the unfolded structure of the hinge can still achieve horizontal deflection, which is suitable for fastening the workpiece in a confined space. (3) When the plug rod and the stop are pressed together, the stop prevents the snap-fit ​​part from retracting into the connecting sleeve, so that the snap-fit ​​part always locks the connecting sleeve onto the bearing plate. At the same time, further rotating the plug rod will allow the clamping member to press against the workpiece. When the plug rod is locked on the bearing plate, it can also ensure that the clamping member effectively presses against the workpiece, thereby improving the stability of the fastening device in limiting the workpiece. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a top view of a sheet metal conveying pallet according to the present invention; Figure 2 This is a front view of a sheet metal conveying pallet according to the present invention; Figure 3 This is a three-dimensional structural diagram of a sheet metal transport and fastening device according to the present invention; Figure 4 This is a cross-sectional view of a sheet metal transport and fastening device according to the present invention; Figure 5 This invention Figure 4 Enlarged view of a portion of point A in the middle.

[0019] Explanation of reference numerals in the attached drawings: 100, bearing plate; 1001, positioning hole; 11, plug-in component; 111, plug-in rod; 112, connecting sleeve; 113, snap-fit ​​component; 114, stop component; 12, clamping component; 1201, groove; 1202, clearance groove; 121, threaded component; 122, hinge component; 123, abutment component; 124, rotating shaft; 125, protruding ridge; 126, elastic layer; 200, workpiece. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0021] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention 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 embodiments of the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0026] The technical solution is explained below. Existing trimming devices are directly plugged into hexagonal sockets. During long-distance transport or on bumpy roads, the device is prone to displacement due to vibration, affecting the stability of the trimming pusher against the material. The existing trimming device also lacks stability with the pallet. Therefore, if... Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a sheet metal transport and fastening device, comprising:

[0027] A support plate 100 is provided, on which several stacked sheet workpieces 200 are placed, and several positioning holes 1001 are provided around the several workpieces 200. The insertion component 11 is inserted vertically into the positioning hole 1001 and rotates circumferentially along the positioning hole 1001. The insertion component 11 is provided with a snap-fit ​​part, which locks the insertion component 11 into the positioning hole 1001. The clamping member 12 is threadedly connected to the insertion member 11, and when the insertion member 11 rotates relative to the positioning hole 1001, the clamping member 12 moves closer to or further away from the side of the workpiece 200.

[0028] In use, one end of the plug-in member 11 is engaged with the inside of the positioning hole 1001 through the snap-fit ​​part to ensure the stability of the plug-in member 11 and the support plate 100. In addition, the plug-in member 11 rotates relative to the positioning hole 1001, so that the clamping member 12 moves closer to or further away from the side of the workpiece 200, so as to achieve the abutment and separation of the clamping member 12 and the side of the workpiece 200, thereby achieving the fastening or loosening of the workpiece 200.

[0029] The plug-in component 11 includes a plug-in rod 111, a connecting sleeve 112, and a snap-fit ​​component 113. The connecting sleeve 112 is adjusted to fit over the plug-in rod 111 in a vertical direction. The connecting sleeve 112 is adapted to the positioning hole 1001 and is inserted into the positioning hole 1001. The snap-fit ​​component 113 is disposed on the connecting sleeve 112 and is used to lock the connecting sleeve 112. The snap-fit ​​component 113 serves as a snap-fit ​​part.

[0030] like Figure 3 and Figure 4 As shown, the outer peripheral wall of the insertion rod 111 is provided with external threads and is threadedly connected to the clamping member 12. When the insertion rod 111 and the clamping member 12 rotate relative to each other in the circumferential direction, the clamping member 12 can move closer to or away from the workpiece 200. The connecting sleeve 112 is a hollow cylindrical structure. The inner wall of the connecting sleeve 112 is threadedly connected to the outer peripheral wall of the insertion rod 111. The outer peripheral contour of the connecting sleeve 112 is perfectly matched with the inner wall shape of the positioning hole 1001 on the bearing plate 100. This ensures that the connecting sleeve 112 is stably inserted into the positioning hole 1001 and allows the connecting sleeve 112 to rotate flexibly in the circumferential direction of the positioning hole 1001, providing a transmission basis for driving the clamping member 12 to move horizontally. The snap-fit ​​member 113 can adopt an elastic ball-type structure and is set in the lower part of the side wall of the connecting sleeve 112. The snap-fit ​​member is equipped with a mounting hole that passes through the connecting sleeve 112 radially and a compression spring set in the mounting hole. The compression spring is not shown in the figure. There is also a snap-fit ​​ball that can retract into the mounting hole.

[0031] like Figure 1 and Figure 5 As shown, some of the positioning holes 1001 are non-circular holes, and the outer contour of the connecting sleeve 112 is adapted to the positioning hole 1001. Specifically, the positioning hole 1001 is configured as a regular hexagonal hole. When the connecting sleeve 112 is inserted into the positioning hole 1001, the connecting sleeve 112 cannot rotate relative to the positioning hole 1001. The connecting sleeve 112 is threadedly connected to the insertion rod 111. A stop 114 is provided on the connecting sleeve 112. When the insertion rod 111 is screwed into the connecting sleeve 112 to a predetermined depth, the stop 114 abuts against the snap-fit ​​member 113.

[0032] In further description, during use, when the plug rod 111 is rotated, the connecting sleeve 112 cannot rotate, allowing the plug rod 111 to be further screwed into the connecting sleeve 112. When the plug rod 111 abuts against the stop member 114, the stop member 114 prevents the locking member 113 from retracting into the connecting sleeve 112, thus ensuring that the locking member 113 always locks the connecting sleeve 112 onto the bearing plate 100. At the same time, further rotating the plug rod 111 will cause the clamping member 12 to abut against the workpiece 200. When the plug rod 111 is locked onto the bearing plate 100, it can also ensure that the clamping member 12 effectively abuts against the workpiece 200, thereby improving the stability of the fastening device in limiting the workpiece 200.

[0033] If the positioning hole 1001 is a circular hole, the plug rod 111 is screwed into the inside of the connecting sleeve 112. The plug rod 111 pushes the stop 114, making the snap-fit ​​113 unable to move, and locking the connecting sleeve 112 axially in the positioning hole 1001. Since the positioning hole 1001 is a circular hole, the plug rod 111 can rotate circumferentially and adjust the distance between the clamping member 12 and the workpiece 200.

[0034] The clamping member 12 includes at least one pair of threaded members 121, at least one pair of hinged members 122 and abutment members 123 arranged sequentially in the horizontal direction. At least one pair of threaded members 121 are threadedly connected to the plug rod 111. At least one pair of hinged members 122 are hinged to at least one pair of threaded members 121 in a corresponding manner. The other ends of at least one pair of hinged members 122 are hinged to each other and rotatably disposed on the abutment members 123. The threads of two adjacent threaded members 121 have opposite directions of rotation.

[0035] The threaded part 121 has an internal thread and is threaded to the outer peripheral wall of the plug rod 111. When the plug rod 111 rotates, the two adjacent threaded parts 121 move closer or further apart in the vertical direction. Under the action of the hinge 122, the distance between the plug rod 111 and the abutment 123 is adjusted, thereby adjusting the distance of the abutment 123 relative to the workpiece 200 in the horizontal direction, which can achieve the tightening or loosening of the workpiece 200.

[0036] Specifically, in this application, the outer peripheral wall of the plug rod 111 can be threaded to multiple pairs of threaded parts 121, and multiple threaded parts 121 are driven by a plug rod 111. Therefore, even if there are thick workpieces 200 stacked on the support plate 100, only the end of one plug rod 111 needs to be rotated to drive the supporting part 123 to move synchronously in the horizontal direction. The operation is simple and convenient, and it can provide stable support for the workpiece 200.

[0037] Taking the example of a single pair of symmetrical hinges 122 on the plug rod 111, the torque applied to the plug rod 111 is calculated through two transformations: the vertical driving force of the thread and the horizontal component of the hinge force. Before quantifying the horizontal clamping force of the abutment 123 on the workpiece 200, the vertical force needs to be calculated first. The torque for twisting the plug rod 111... The vertical force of the threaded part 121 pushing the hinge 123 in the vertical direction The relationship is:

[0038] ;Formula 1 in, Operating torque, in the range of 5-15 N×m. For thread transmission efficiency, a value of 0.8~0.9 is used. For the efficiency of the articulated transmission, a value of 0.8 to 0.9 is used. For total transmission efficiency × ,Right now, The equivalent friction angle of the thread is between 5° and 6°. The thread helix angle ranges from 5 to 12°. Thread pitch diameter, 8-12mm The working angle of the hinge is between 30° and 60°.

[0039] According to Formula 1: Transformation of Formula 1; Because the two threaded parts 121 rotate in opposite directions, when the insertion rod 111 rotates, they move synchronously and vertically closer or further apart. Furthermore, the symmetrically arranged hinges 123 ensure that the vertical driving force of the two threaded parts... Synchronous transmission, total vertical driving force is 2 ; The hinged joint converts the vertical motion of the threaded component into a horizontal force. Through force decomposition, the vertical driving force 2... Converted into horizontal clamping force At the same time, the efficiency of the articulated transmission is taken into account. Finally, it is integrated into the general formula: ;Formula 2 Formula 2 shows that the fastening device of this application has high reliability and good anti-loosening effect, and this application can be stably fixed in confined spaces.

[0040] Specifically, this section uses actual application scenario parameters to verify the horizontal clamping force of the fastening device on the workpiece 200. Select the thread pitch diameter Fine thread with a lead of 10mm and a thread helix angle of 1.75mm. =arctanπ×101.75≈3.2°, equivalent friction angle of the thread. =5°, total transmission efficiency =0.8, the angle between the hinge and the horizontal direction =35°; tan35°≈0.700. According to the formula... Substitute the operating torque =10 N·m, calculated to = With a torque of approximately 1566N, it meets the requirements for horizontal clamping of workpieces, and the operating torque is only 10N·m. It is easy to operate manually, and the 10mm thread pitch diameter adapter has a compact design.

[0041] like Figure 3 As shown, in order not to occupy space on the bearing plate 100 in the horizontal direction, the abutment 123 is provided with a through groove 1201, the contour of which is adapted to the contour of the hinge 122.

[0042] The abutment 123 can accommodate the hinge 122 through the groove 1201, allowing the entire device to be fully folded without affecting its performance. Therefore, even when working in confined spaces, the device's fastening effect is not affected. The device can be folded into a smaller state first, and when unfolded and pressed, the unfolded structure of the hinge can still achieve horizontal deflection, adapting to the fastening of the workpiece 200 in confined spaces.

[0043] In addition, it is worth mentioning that when the device is used in a confined space, the plug rod 111 is vertically inserted into the support plate 100, and the top of the plug rod 111 can be exposed in the upper area of ​​the confined space. When the operator rotates the plug rod 111, there is no need to go deep into the confined space. The operator only needs to apply a rotational force directly to the top of the plug rod 111 from the top of the space. This design completely avoids the problems of limited operating space, difficulty in reaching the hand, or obstruction of movement in confined spaces. It greatly reduces the difficulty of operation and safety risks, allowing the operator to easily and efficiently drive the clamping member 12 to press against the workpiece 200 by rotating the plug rod 111. Moreover, a single plug rod 111 is equipped with multiple threaded parts 121. Therefore, this application can achieve fastening of more than 200 points of the workpiece in confined spaces.

[0044] The hinge 122 is hinged to the threaded part 121 via the pivot 124. The abutment 123 is provided with a clearance groove 1202, which is used to avoid the pivot 124. The hinge 122 and the threaded part 121 form a stable hinge structure through the pivot 124, and the clearance groove 1202 is located on the circumferential path of the hinge 122. When the hinge 122 is folded into the groove 1201, the pivot 124 will be synchronously stored in the groove 1201 along with the rotation of the hinge 122, so that the pivot 124 will not form an additional protruding structure, further ensuring the compactness of the structure after the device is folded.

[0045] like Figure 3 As shown, in order to prevent the hinge 122 from rotating excessively, the side of the abutment 123 that contacts the hinge 122 is provided with a protruding ridge 125. The abutment 123 contacts the hinge 122 through the protruding ridge 125, ensuring that the hinge 122 will not rotate excessively and become difficult to reset. At the same time, the protruding ridge 125 can also ensure the compact structure of the device in the folded state.

[0046] like Figure 4 As shown, in order to stably abut against the side of each workpiece 200, the abutting member 123 is provided with an elastic layer 126 on one side of the workpiece 200. The thickness of the elastic layer 126 is 3-5mm, and its elastic deformation characteristics can adapt to the small tolerances of the side of the workpiece 200, ensuring that each workpiece 200 is well abutted and preventing some workpieces 200 from shifting during transportation.

[0047] like Figure 3 As shown, to facilitate the rotation of the plug rod 111, an operating part is provided at the end of the plug rod 111 away from the connecting sleeve 112. The operating part can be configured as a non-circular part, for example, rectangular or hexagonal, or butterfly-shaped. The non-circular operating part allows the operator to fully transmit the force applied by the operator to the plug rod 111 through the use of operating tools such as wrenches or sockets, with minimal torque loss.

[0048] The working principle of this sheet metal transport and fastening device is as follows: The operator applies operating torque to the hexagonal operating part of the plug rod 111. This torque is transmitted to the threaded part 121 through the threaded structure of the plug rod 111, causing the threaded part 121 to move vertically relative to the plug rod 111. Since the plug rod 111 is provided with external threads of different directions, adjacent threaded parts 121 will move relative to each other, causing adjacent hinge parts 123 to move closer or further away from each other. This converts the torque of the plug rod 111 into a horizontal component force, which is then abutted against the side of the workpiece 200 by the abutment part 123, thus completing the fastening operation of the workpiece 200.

[0049] On the other hand, the present invention also provides a sheet material conveying pallet, on which the aforementioned sheet material transport fastening device is configured, and the conveying pallet can achieve precise and stable locking of the sheet material through the integrated fastening device.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sheet metal transport and fastening device, characterized in that, include: A support plate (100) on which a plurality of workpieces (200) are placed, and a plurality of positioning holes (1001) are provided around the plurality of workpieces (200). A plug-in component (11) is inserted vertically into the positioning hole (1001). The plug-in component (11) rotates circumferentially along the positioning hole (1001). A snap-fit ​​part is provided on the plug-in component (11), and the snap-fit ​​part locks the plug-in component (11) into the positioning hole (1001). A clamping member (12) is threadedly connected to the plug member (11), and when the plug member (11) rotates relative to the positioning hole (1001), the clamping member (12) moves closer to or further away from the side of the workpiece (200).

2. The sheet metal transport and fastening device as described in claim 1, characterized in that, The plug-in component (11) includes a plug-in rod (111), a connecting sleeve (112), and a snap-fit ​​component (113). The connecting sleeve (112) is adjusted vertically and fitted onto the outside of the plug-in rod (111). The connecting sleeve (112) is adapted to the positioning hole (1001) and inserted into the positioning hole (1001). The snap-fit ​​component (113) is disposed on the connecting sleeve (112) and is used to lock the connecting sleeve (112). The snap-fit ​​component (113) serves as the snap-fit ​​part.

3. The sheet metal transport and fastening device as described in claim 1, characterized in that, The connecting sleeve (112) is threadedly connected to the plug rod (111). A stop (114) is provided on the connecting sleeve (112). When the plug rod (111) is screwed into the connecting sleeve (112) to a predetermined depth, the stop (114) abuts against the snap-fit ​​member (113).

4. The sheet metal transport and fastening device as described in claim 1, characterized in that, The clamping member (12) includes: At least one pair of threaded parts (121), at least one pair of hinged parts (122), and abutment (123) are arranged sequentially along the horizontal direction. The at least one pair of threaded parts (121) are threadedly connected to the plug rod (111). The at least one pair of hinged parts (122) are hinged to the at least one pair of threaded parts (121) in a corresponding manner. The other ends of the at least one pair of hinged parts (122) are hinged to each other and rotatably disposed on the abutment (123). The threads of two adjacent threaded parts (121) have opposite directions.

5. The sheet metal transport and fastening device as described in claim 4, characterized in that, The abutment (123) is provided with a through groove (1201), the outline of which is adapted to the outline of the hinge (122).

6. The sheet metal transport and fastening device as described in claim 5, characterized in that, The hinge (122) is hinged to the threaded part (121) via a pivot (124), and the abutment (123) is provided with a relief groove (1202) for avoiding the pivot (124).

7. The sheet metal transport and fastening device as described in claim 4, characterized in that, The side of the abutment (123) that contacts the hinge (122) is provided with a protruding ridge (125).

8. The sheet metal transport and fastening device as described in claim 4, characterized in that, The abutting member (123) has an elastic layer (126) on one side of the workpiece (200) that abuts against it.

9. The sheet metal transport and fastening device as described in claim 2, characterized in that, An operating part is provided at the end of the plug rod (111) away from the connecting sleeve (112).

10. A sheet metal conveying pallet, characterized in that, The conveying pallet is equipped with a sheet metal transport fastening device as described in any one of claims 1-9.

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