A sheet metal processing device

Abstract

This invention discloses a sheet metal processing device, including a processing platform, a sheet metal clamping mechanism, and multiple elastic pre-tensioning components. The sheet metal clamping mechanism includes a support, a first telescopic rod, and a clamping plate. The support is connected to the processing platform, the first telescopic rod is connected to the support, and the clamping plate is connected to the free end of the first telescopic rod. The elastic pre-tensioning components are connected to the lower surface of the clamping plate and are used to adapt to the micro-undulations and macro-deformations of the sheet metal surface, and to clamp the sheet metal. The clamping plate has a cavity, and the elastic pre-tensioning components include a connecting rod, a contact head, a limiting plate, and a second spring. The connecting rod is slidably connected to the lower wall of the clamping plate. The contact head is connected to the lower end of the connecting rod. This invention, through multiple independently floating elastic pre-tensioning components, can adaptively clamp the sheet metal surface unevenness, avoiding local overpressure damage or insecure fixation; the clamping force detection and visual marking functions facilitate sheet metal quality control and subsequent sheet metal processing.

Description

Technical Field

[0001] This invention belongs to the field of sheet metal processing technology, and specifically relates to a sheet metal processing device. Background Technology

[0002] In sheet metal processing, reliable sheet metal fixation is crucial for ensuring processing accuracy and surface quality. Various sheet metal fixing devices have emerged in the prior art. For example, Chinese utility model patent CN211101827U discloses a rapid positioning and cutting device for sheet metal. This device includes a worktable, a cutting mechanism, a positioning mechanism, and a clamping mechanism. The clamping mechanism uses a liftable baffle to firmly press the sheet metal from top to bottom, while two opposing square rods moving closer or further apart achieve lateral restraint of the sheet metal. This solution achieves basic sheet metal fixation through mechanical clamping.

[0003] However, the clamping mechanism of this device uses a rigid baffle to directly press against the upper surface of the board. Actual boards (especially engineered wood or natural wood) often have surface unevenness, warping, or thickness tolerances. The rigid baffle cannot adapt to the micro-undulations and macro-deformations of the board surface, resulting in excessive pressure on localized areas after clamping, causing indentations or damage. Meanwhile, these areas fail to be effectively fixed due to poor contact, easily leading to vibration and displacement during processing, severely affecting processing accuracy and yield.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a sheet metal processing device.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a sheet metal processing device that can solve the problem that the rigid clamping structure in existing sheet metal processing devices cannot adapt to the unevenness of the sheet metal surface, which can easily cause local overpressure damage or insecure fixation.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution: A sheet metal processing apparatus includes a processing platform, a sheet metal clamping mechanism, and multiple elastic pre-tensioning components. The sheet metal clamping mechanism includes a support, a first telescopic rod, and a clamping plate. The support is connected to the processing platform, the first telescopic rod is connected to the support, and the clamping plate is connected to the free end of the first telescopic rod. The elastic pre-tensioning components are connected to the lower surface of the clamping plate and are used to adapt to the micro-undulations and macro-deformations of the sheet metal surface, and to clamp the sheet metal.

[0008] In one or more embodiments of the present invention, the clamping plate has a cavity, and the elastic preload includes a connecting rod, a contact head, a limiting plate, and a second spring. The connecting rod is slidably connected to the lower bottom wall of the clamping plate. The contact head is connected to the lower end of the connecting rod. The limiting plate is connected to the side wall of the connecting rod located within the cavity. The second spring is disposed within the cavity and wraps around the connecting rod, and is located between the limiting plate and the top wall of the cavity.

[0009] In one or more embodiments of the present invention, the contact head is made of elastic rubber material, and a pressure sensor is provided on the top wall of the cavity, the pressure sensor corresponding to the second spring.

[0010] In one or more embodiments of the present invention, the pressing plate is further provided with a receiving cavity, the receiving cavity is provided with a marking liquid, the bottom wall of the receiving cavity is provided with a through hole, and the receiving cavity is connected to the cavity through the through hole.

[0011] In one or more embodiments of the present invention, a plurality of sliding rods are slidably provided inside the pressing plate, the sliding rods corresponding to the connecting rods, one end of the sliding rod located in the receiving cavity is connected to a blocking plate, the blocking plate can cover the through hole, one end of the sliding rod located in the cavity is connected to a mesh frame, a first spring is provided between the mesh frame and the top wall of the cavity, and the first spring wraps around the sliding rod.

[0012] In one or more embodiments of the present invention, the end of the connecting rod located in the cavity is connected to a collection cover, the connecting rod is provided with a flow channel, the collection cover is connected to the flow channel, and the collection cover is located on the lower side of the mesh frame.

[0013] In one or more embodiments of the present invention, an elastic sleeve is connected between the limiting plate and the top wall of the cavity, the elastic sleeve surrounds the collecting cover and is disposed inside the second spring.

[0014] In one or more embodiments of the present invention, the connecting rod is integrally connected to a liquid distribution ring on the side wall outside the clamping plate. The liquid distribution ring is connected to the flow channel. The bottom of the liquid distribution ring is provided with a plurality of leakage holes. The outer surface of the contact head is provided with a flow guide groove. The leakage holes correspond to the flow guide groove.

[0015] In one or more embodiments of the present invention, a third telescopic rod is connected inside the contact head, a label plate is connected to the free end of the third telescopic rod, the third telescopic rod is electrically connected to the pressure sensor, and a clearance groove matching the label plate is provided at the bottom of the contact head.

[0016] In one or more embodiments of the present invention, a pair of sidewalls of the pressing plate are each connected to a side clamping mechanism, the side clamping mechanism comprising a pair of second telescopic rods and a side plate. The second telescopic rods are connected to the sidewalls of the pressing plate. The side plate is connected to the free ends of the pair of second telescopic rods, and an elastic pad is provided on the side of the side plate near the pressing plate.

[0017] Compared with the prior art, the sheet metal processing device of the present invention can adaptively press the unevenness of the sheet metal surface through multiple independently floating elastic pre-tightening members, avoiding the problems of local overpressure damage or insecure fixation; through the pressing force detection and visual marking function, it is convenient for sheet metal quality control and subsequent sheet metal processing. Attached Figure Description

[0018] 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 recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a sheet metal processing device according to an embodiment of the present invention; Figure 2 This is a first-angle perspective view of the plate clamping mechanism in one embodiment of the present invention; Figure 3 This is a front view of the sheet metal clamping mechanism in one embodiment of the present invention; Figure 4 This is a second perspective view of the plate clamping mechanism in one embodiment of the present invention; Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle; Figure 6 This is a cross-sectional view of an elastic preload element in one embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the structure at point B; Figure 8 This is a cross-sectional view of the pressing mechanism in one embodiment of the present invention; Figure 9 for Figure 8 Schematic diagram of the structure at point C; Figure 10 for Figure 8 Schematic diagram of the structure at point D.

[0020] Explanation of key figure labels: 1-Processing platform, 2-Sheet pressing mechanism, 201-Bracket, 202-First telescopic rod, 203-Pressure plate, 2031-Receiving cavity, 20311-Through hole, 2032-Cavity, 2033-Marking liquid, 2034-Slide rod, 2035-Blocking plate, 2036-Network frame, 2037-First spring, 204-Side clamping mechanism, 2041-Second telescopic rod, 2042-Side plate, 3-Elastic pre-tightening component, 301-Connecting rod, 3011-Flow channel, 3012-Dispensing ring, 30121-Leakage hole, 302-Contact head, 3021-Guide groove, 3022-Third telescopic rod, 3023-Marking plate, 303-Limiting plate, 3031-Elastic sleeve, 304-Second spring, 305-Collection cover. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0022] like Figures 1 to 10 As shown, a sheet metal processing apparatus according to one embodiment of the present invention includes a processing platform 1, a sheet metal clamping mechanism 2, and multiple elastic preload members 3. The processing platform 1 is used to support the sheet metal to be processed. The sheet metal clamping mechanism 2, in conjunction with the multiple elastic preload members 3, can adapt to the micro-undulations and macro-deformations of the sheet metal surface to clamp the sheet metal. Each elastic preload member 3 can independently adapt to the local unevenness of the sheet metal surface, avoiding local overpressure damage or insecure fixation caused by rigid clamping.

[0023] Among them, multiple elastic pre-tightening components 3 are arranged in a matrix to ensure uniform pressing on the surface of the board. The arrangement density can be designed according to the processing accuracy requirements of the board. The higher the processing accuracy requirements, the greater the arrangement density.

[0024] like Figures 1 to 3 As shown, the plate clamping mechanism 2 includes a bracket 201, a first telescopic rod 202, and a clamping plate 203. The bracket 201 is a welded steel structure with sufficient strength and rigidity, and is bolted to the processing platform 1 to provide stable support for the first telescopic rod 202 and the clamping plate 203. One end of the first telescopic rod 202 is connected to the crossbeam of the bracket 201 via a flange, and the other end is bolted to the center of the upper surface of the clamping plate 203 to ensure the stability of the clamping plate 203 during lifting and lowering.

[0025] By controlling the extension and retraction of the first telescopic rod 202, the pressure plate 203 can be driven to move up and down vertically, thereby achieving the pressing or releasing of the sheet material. When the first telescopic rod 202 extends, the pressure plate 203 moves downward, causing the elastic pre-tensioning member 3 to contact and press the sheet material. When the first telescopic rod 202 retracts, the pressure plate 203 moves upward, the elastic pre-tensioning member 3 separates from the sheet material, completing the release of the sheet material and facilitating loading and unloading operations.

[0026] like Figures 1 to 10 As shown, the clamping plate 203 has a cavity 2032. The elastic preload member 3 includes a connecting rod 301, a contact head 302, a limiting plate 303, and a second spring 304. The connecting rod 301 is slidably inserted through the lower bottom wall of the clamping plate 203, with its lower end extending out of the clamping plate 203 and connecting to the contact head 302. The limiting plate 303 is fixedly connected to the side wall of the connecting rod 301 located within the cavity 2032. The second spring 304 is located within the cavity 2032 and sleeved outside the connecting rod 301, situated between the limiting plate 303 and the top wall of the cavity 2032, providing a downward elastic preload force to the connecting rod 301.

[0027] In the initial state, the second spring 304 is in a naturally extended or slightly compressed state, pushing the limiting plate 303 downwards and keeping the contact head 302 extended from the bottom surface of the pressing plate 203. When the pressing plate 203 descends, the contact head 302 contacts the plate, and according to the undulation of the plate surface, the connecting rod 301 can slide upwards to compress the second spring 304, thereby achieving adaptive pressing.

[0028] For raised areas on the board surface, the contact head 302 experiences a larger reaction force, pushing the connecting rod 301 to slide upwards along the mounting hole. The connecting rod 301 then moves the limiting plate 303 upwards, compressing the second spring 304. The second spring 304 generates a counter-elastic force, which is applied to the raised areas of the board through the contact head 302, achieving a pressing effect. For recessed areas on the board surface, the contact head 302 experiences a smaller reaction force, the connecting rod 301 slides upwards a shorter distance, and the compression of the second spring 304 is smaller. The elastic force it generates is compatible with the contact state of the recessed areas, preventing insecure fixing due to poor contact.

[0029] Each elastic preload 3 independently completes the above-mentioned expansion and compression process without interfering with each other, thereby achieving adaptive compression of the unevenness of the board surface, ensuring that all parts of the board are subjected to uniform and appropriate compression force, which not only ensures the stability of the fixation, but also avoids local overpressure damage.

[0030] Furthermore, the contact head 302 is made of elastic rubber material, preferably wear-resistant, pressure-resistant, and non-slip nitrile rubber or silicone. Its bottom is curved to increase the contact area with the board surface, improve friction, and avoid rigid contact that could scratch the board surface.

[0031] Specifically, a pressure sensor is provided on the upper top wall of the cavity 2032. The pressure sensor corresponds to the second spring 304 and is used to detect the reaction force after the second spring 304 is compressed, thereby determining whether the clamping force between each contact head 302 and the plate is uniform. When the clamping force at a certain point is too small or too large, the stroke of the first telescopic rod 202 can be adjusted through the control system.

[0032] Furthermore, all pressure sensors are electrically connected to an external control system, transmitting the detected clamping force data to the control system's display screen in real time. Operators can then visually view the clamping force values ​​at various points on the board. The control system has preset threshold values ​​for a reasonable clamping force range. When the clamping force value detected by a pressure sensor exceeds the threshold range, the control system will issue an audible and visual alarm signal to remind the operator to adjust it in time.

[0033] The operator can control the extension and retraction of the first telescopic rod 202 through the control system to regulate the overall clamping force: when most of the clamping force values ​​are below the lower threshold, the first telescopic rod 202 is extended further, causing the clamping plate 203 to move downwards, increasing the compression of the second spring 304 and raising the overall clamping force. When most of the clamping force values ​​are above the upper threshold, the first telescopic rod 202 is slightly retracted, causing the clamping plate 203 to move upwards, reducing the compression of the second spring 304, lowering the overall clamping force, and ensuring that the clamping force of each part of the plate is within the set reasonable range.

[0034] like Figures 1 to 10 As shown, the clamping plate 203 is also provided with a receiving cavity 2031, which stores a marking liquid 2033. The bottom wall of the receiving cavity 2031 is provided with a through hole 20311, and the receiving cavity 2031 is connected to the cavity 2032 through the through hole 20311.

[0035] The receiving cavity 2031 is located on the upper part of the pressing plate 203 and is used to store the marking liquid 2033. The top of the cavity is provided with an openable filling port, which makes it convenient for operators to replenish the marking liquid 2033 in a timely manner. The filling port is provided with a sealing plug to prevent the marking liquid 2033 from leaking and external impurities from entering.

[0036] In this embodiment, the marking liquid 2033 can be selected from colored ink, fluorescent liquid, or erasable marking liquid. Colored ink is suitable for processing of boards that do not require subsequent removal of markings, fluorescent liquid is suitable for processing of boards with high-precision detection, and erasable marking liquid is suitable for processing scenarios that require maintaining the cleanliness of the board surface. Operators can flexibly choose according to actual processing needs.

[0037] In addition, multiple sliding rods 2034 are slidably arranged inside the clamping plate 203, and each sliding rod 2034 corresponds one-to-one with the connecting rod 301. One end of the sliding rod 2034 located inside the receiving cavity 2031 is connected to a blocking plate 2035, which covers and seals the through hole 20311. One end of the sliding rod 2034 located inside the cavity 2032 is connected to a mesh frame 2036. The mesh frame 2036 is a metal mesh structure with a certain strength and permeability, facilitating the passage of the marking liquid 2033. A first spring 2037 is provided between the mesh frame 2036 and the top wall of the cavity 2032, and the first spring 2037 is sleeved on the outside of the sliding rod 2034.

[0038] When the connecting rod 301 slides upward, its upper end can push the mesh frame 2036, causing the sliding rod 2034 to move upward, thereby driving the blocking plate 2035 to leave the through hole 20311, and the marking liquid 2033 in the receiving cavity 2031 can flow into the cavity 2032 through the through hole 20311.

[0039] like Figures 8 to 10 As shown, the upper end of the connecting rod 301, located within the cavity 2032, is connected to a collecting cover 305. A flow channel 3011 is provided inside the connecting rod 301, and the collecting cover 305 communicates with the flow channel 3011. The collecting cover 305 is funnel-shaped and located below the mesh frame 2036. When the marking liquid 2033 flows out from the through hole 20311, it drips or flows into the collecting cover 305 and then enters the flow channel 3011.

[0040] An elastic sleeve 3031 is connected between the limiting plate 303 and the top wall of the cavity 2032. The elastic sleeve 3031 surrounds the collection cover 305 and is located inside the second spring 304, serving a sealing and guiding function to prevent the marking liquid 2033 from contaminating the second spring 304 and the pressure sensor. At the same time, it allows the marking liquid 2033 flowing out through the through hole 20311 to be directly collected in the collection cover 305.

[0041] Additionally, a liquid distribution ring 3012 is integrally formed and connected to the side wall of the connecting rod 301 outside the clamping plate 203, and the liquid distribution ring 3012 is connected to the flow channel 3011. The bottom of the liquid distribution ring 3012 is provided with multiple leakage holes 30121. The outer surface of the contact head 302 is provided with a flow guide groove 3021, and the leakage holes 30121 correspond to the flow guide groove 3021.

[0042] When the marking liquid 2033 reaches the liquid distribution ring 3012 through the flow channel 3011, it drips from the drain hole 30121 into the guide groove 3021, and then flows down along the outer surface of the contact head 302 to the surface of the plate, marking the plate during the pressing process. Specifically: When a certain part of the plate is a protrusion and the clamping force is too large, the contact head 302 receives a large reaction force, which pushes the connecting rod 301 to slide upward a large distance. The collecting cover 305 at the upper end of the connecting rod 301 pushes the mesh frame 2036 upward, causing the mesh frame 2036 to move upward against the elastic force of the first spring 2037. The mesh frame 2036 drives the sliding rod 2034 to slide upward, and the sliding rod 2034 drives the blocking plate 2035 to move upward, causing the blocking plate 2035 to separate from the through hole 20311, and the through hole 20311 to open.

[0043] Under the influence of gravity, the marking liquid 2033 in the receiving cavity 2031 flows into the cavity 2032 through the through hole 20311, passes through the mesh frame 2036 and is accurately collected by the collection cover 305, then enters the flow channel 3011 of the connecting rod 301, flows into the annular flow channel of the liquid distribution ring 3012, and then drips from the drain hole 30121 at the bottom of the liquid distribution ring 3012 into the guide groove 3021 on the outer surface of the contact head 302, flows down along the guide groove 3021, and finally drips onto the raised part of the plate, forming a colored liquid mark.

[0044] The greater the upward sliding distance of the connecting rod 301, the wider the opening of the through hole 20311, the more the marking liquid 2033 flows out, and the more obvious the liquid marks on the board surface. Operators can judge the degree of board protrusion and the extent of excessive clamping force based on the depth of the liquid marks. When the clamping force at a certain part of the board is within the normal range, the upward sliding distance of the connecting rod 301 is small, and it cannot push the mesh frame 2036. The blocking plate 2035 remains in the closed state of the through hole 20311, the marking liquid 2033 does not flow out, and there are no liquid marks on the board surface.

[0045] like Figure 7 As shown, a third telescopic rod 3022 is internally connected to the contact head 302, and a marking plate 3023 is connected to the free end of the third telescopic rod 3022. The third telescopic rod 3022 is electrically connected to a pressure sensor. In the initial state, the third telescopic rod 3022 is in a retracted state, and the marking plate 3023 is housed in the recessed groove and does not contact the surface of the board. When the pressure sensor detects that the clamping force at a certain contact head 302 is lower than the lower threshold, it indicates that the part of the board is recessed, with poor contact and insufficient clamping force. At this time, the third telescopic rod 3022 can be extended, allowing the marking plate 3023 to emerge from the recessed groove and imprint itself onto the surface of the board, forming a mark, which facilitates subsequent processing of the board.

[0046] Among them, the label plate 3023 is a rigid metal plate with a preset marking pattern engraved on its bottom for easy and quick identification.

[0047] In this embodiment, the first telescopic rod 202, the second telescopic rod 2041, and the third telescopic rod 3022 can be selected as pneumatic cylinders, hydraulic cylinders, or electric push rods according to actual usage requirements. Electric push rods are preferred because they have the characteristics of high control accuracy, fast response speed, low energy consumption, and low noise, making them more suitable for automated control scenarios in sheet metal processing.

[0048] like Figures 2 to 5 As shown, a pair of sidewalls of the clamping plate 203 are each connected to a side clamping mechanism 204. Each side clamping mechanism 204 includes a pair of second telescopic rods 2041 and a side plate 2042. One end of the second telescopic rod 2041 is fixedly connected to the sidewall of the clamping plate 203, and the other end is connected to the side plate 2042. An elastic pad is provided on the side of the side plate 2042 near the clamping plate 203.

[0049] After the clamping plate 203 clamps the plate, the second telescopic rod 2041 drives the side plate 2042 to move to the side of the plate, thereby limiting the plate to the side and preventing the plate from shifting laterally during processing.

[0050] In practical use, the material to be processed is placed on the processing platform 1, and the first telescopic rod 202 is activated, causing the clamping plate 203 to move downwards. Multiple contact heads 302 first contact the surface of the material. Based on the microscopic undulations and macroscopic deformation of the material surface, each connecting rod 301 slides upwards to varying degrees, compressing the corresponding second spring 304. Pressure sensors monitor the clamping force at each point in real time. When the clamping force of all contact heads 302 reaches the set range, the first telescopic rod 202 stops descending. Then, the second telescopic rod 2041 extends, causing the side plates 2042 to clamp the edges of the material from both sides, completing the fixation. For areas with abnormal clamping force, if the clamping force is greater than the set threshold, it indicates a protrusion in the material, and the marking liquid 2033 will automatically flow out and form a mark on the material surface. If the clamping force is less than the set threshold, it indicates a depression in the material, and a mark is imprinted using the marking plate 3023 for subsequent quality traceability or reprocessing.

[0051] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sheet metal processing device, characterized in that, include: Processing platform; A sheet metal clamping mechanism includes a bracket, a first telescopic rod, and a clamping plate. The bracket is connected to the processing platform, the first telescopic rod is connected to the bracket, and the clamping plate is connected to the free end of the first telescopic rod. Multiple elastic preload elements are connected to the bottom surface of the pressing plate to adapt to the micro-undulations and macro-deformation of the plate surface and to press the plate.

2. The sheet metal processing device according to claim 1, characterized in that, The clamping plate has a cavity, and the elastic preload includes: The connecting rod is slidably connected to the bottom wall of the clamping plate; A contact head is connected to the lower end of the connecting rod; A limiting plate is connected to the side wall of the connecting rod located within the cavity; A second spring is disposed within the cavity and wraps around the connecting rod. The second spring is located between the limiting plate and the top wall of the cavity.

3. The sheet metal processing device according to claim 2, characterized in that, The contact head is made of elastic rubber, and a pressure sensor is provided on the top wall of the cavity, which corresponds to the second spring.

4. The sheet metal processing device according to claim 2, characterized in that, The clamping plate is also provided with a receiving cavity, which contains a marking liquid. The bottom wall of the receiving cavity is provided with a through hole, and the receiving cavity is connected to the cavity through the through hole.

5. The sheet metal processing apparatus according to claim 4, characterized in that, Multiple sliding rods are slidably arranged inside the clamping plate. The sliding rods correspond to the connecting rods. One end of the sliding rod located in the receiving cavity is connected to a blocking plate, which can cover the through hole. One end of the sliding rod located in the cavity is connected to a mesh frame. A first spring is provided between the mesh frame and the top wall of the cavity, and the first spring wraps around the sliding rod.

6. The sheet metal processing apparatus according to claim 5, characterized in that, The end of the connecting rod located inside the cavity is connected to a collection cover. The connecting rod has a flow channel, the collection cover is connected to the flow channel, and the collection cover is located on the lower side of the mesh frame.

7. The sheet metal processing apparatus according to claim 6, characterized in that, An elastic sleeve is connected between the limiting plate and the top wall of the cavity. The elastic sleeve surrounds the collecting cover and is located inside the second spring.

8. A sheet metal processing apparatus according to claim 6, characterized in that, The connecting rod is integrally connected to the side wall outside the clamping plate with a liquid distribution ring. The liquid distribution ring is connected to the flow channel. The bottom of the liquid distribution ring is provided with multiple leakage holes. The outer surface of the contact head is provided with a flow guide groove. The leakage holes correspond to the flow guide groove.

9. A sheet metal processing device according to claim 3, characterized in that, The contact head is internally connected to a third telescopic rod, the free end of which is connected to a label plate. The third telescopic rod is electrically connected to the pressure sensor, and the bottom of the contact head is provided with a clearance groove that matches the label plate.

10. A sheet metal processing apparatus according to claim 1, characterized in that, The clamping plate has a pair of side walls each connected to a side clamping mechanism, the side clamping mechanism comprising: A pair of second telescopic rods are connected to the side wall of the clamping plate; A side plate is connected to the free ends of a pair of second telescopic rods, and an elastic pad is provided on the side of the side plate near the pressure plate.

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