Feeder for processing of a body closure

Abstract

The application discloses a feeding machine for processing of a vehicle body closure, comprising a punch and a rack arranged beside the punch, the rack being provided with a clamping conveying part for conveying a material plate and an abutting unit for limiting the material plate from both sides and from the top during conveying; the abutting unit comprises a pair of mounting plates, at least one set of horizontal pulleys and at least one set of vertical pulleys; the mounting plates are respectively fixed to the top of the rack; the horizontal pulleys are horizontally slidably arranged on the mounting plates, and the mounting plates are provided with a waist hole for guiding and limiting the horizontal sliding stroke of the horizontal pulleys; the outer side of the horizontal pulley has a chamfer structure for guiding the edge of the material plate to contact and drive the horizontal pulley to move horizontally when the material plate is conveyed by the clamping conveying part; the device can automatically avoid the horizontal pulley along the waist hole even if the edge of the material plate has burrs, so that the material plate can be stably conveyed to the punching area without affecting the subsequent continuous punching rhythm.

Description

Technical Field

[0001] This invention relates to the field of feeding machine technology, and more specifically, to a feeding machine for processing vehicle body closure parts. Background Technology

[0002] Body closures (such as doors, hoods, and trunk lids) are important components of the automobile body and require multiple stamping processes for continuous forming during automobile manufacturing. The feeder, as a key conveying device connecting the uncoiled material bin and the stamping equipment, plays a crucial role in the automated and continuous production of body closures.

[0003] Currently, the feeding machine used for processing body closure parts on the market includes a frame, a conveyor roller conveyor set on the frame, a lateral limiting mechanism for lateral positioning of the material plate, and a drive device for driving the conveyor roller conveyor. The lateral limiting mechanism typically includes several lateral limiting rollers arranged at intervals along the width direction of the material plate. Lateral centering and precise positioning of the material plate during the conveying process are achieved through the rolling contact between the limiting rollers and the edge of the material plate.

[0004] Furthermore, when using a single inspection camera that shoots from above, the warping characteristics in the images captured by the camera are often not obvious because the deformation direction of the material plate edge is nearly parallel to the camera's optical axis, and the surface of the metal plate is subject to reflective interference. This can easily lead to missed detections or misjudgments. Although this type of feeder can achieve continuous and stable conveying and lateral positioning of long plates, effectively ensuring the continuous cycle and processing accuracy of stamping production, in actual use, after uncoiling and initial stamping and shearing, burrs inevitably form on the edges of the long plates. When the plates move along the conveying direction, the burrs on the edges of the plates are prone to contact with the lateral limiting rollers. The burrs are very likely to get stuck in the gap between the rollers and the plates or wrap around the roller surface, causing the limiting rollers to be obstructed or even jammed. This can lead to conveying interruptions, scratches and damage to the edges of the plates, or affect the production cycle of subsequent continuous stamping, seriously reducing production efficiency and product quality. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a feeder with a contact unit for processing body closure parts.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The invention is further configured to include a stamping press and a frame located beside the stamping press. The frame is provided with a clamping and conveying part for conveying a material plate, and an abutment unit for restricting the material plate on both sides and the top during the conveying process. The abutment unit includes a pair of mounting plates, at least one set of transverse pulleys, and at least one set of vertical pulleys. The pair of mounting plates are respectively fixed to the top sides of the frame. The transverse pulleys are slidably mounted on the mounting plates, and the mounting plates are provided with recessed holes for guiding and restricting the transverse sliding stroke of the transverse pulleys. The outer side of the transverse pulleys has a chamfer. The structure guides the edge of the material plate to contact and drive the transverse pulley to move laterally when the material plate is pushed and conveyed by the clamping and conveying unit; the vertical pulley is vertically slidably mounted on the transverse pulley, and the vertical pulley is used to abut the top of the material plate, and can be driven to slide upward by the warped surface when the material plate has edge warping; the abutment unit also includes a displacement detection unit, which includes at least one detection camera, for detecting the lateral displacement of the transverse pulley and the vertical displacement of the vertical pulley, and judging whether there are burrs or warping on the edge of the material plate based on the detected displacement.

[0007] By adopting the above technical solution, even if there are burrs on the edge of the material plate, the transverse pulley can adaptively avoid them along the kidney hole to avoid jamming, ensuring that the material plate is stably conveyed to the stamping area without affecting the subsequent continuous stamping cycle. At the same time, online detection of burrs and warping is realized, solving the technical problem of burrs causing conveying and stamping interruptions in the existing technology.

[0008] The invention is further configured such that: the abutment unit also includes a first mounting member, a positioning rod, and a return spring; the first mounting member is disposed on the transverse pulley, the first mounting member is a cylindrical structure, and the first mounting member is slidably disposed in the kidney hole; the positioning rod is inserted through the kidney hole, and there is a clearance fit between the positioning rod and the first mounting member; a return spring is disposed on the outside of the positioning rod, one end of the return spring abuts against the side of the first mounting member, and the other end of the return spring abuts against the kidney hole; when there are burrs or unevenness on both sides of the material plate, the transverse pulley can move along the kidney hole to adaptively avoid the burr parts, and after the burr passes, it is driven by the return spring to return to the reference transverse position.

[0009] The invention is further configured such that: the abutting unit also includes a second mounting member; the second mounting member is slidably disposed on the first mounting member, and the bottom of the second mounting member is connected to the vertical pulley; a vertical spline groove is provided on the first mounting member, and the second mounting member slides in cooperation with the vertical spline groove to restrict the vertical sliding of the second mounting member; when there is edge warping at the corner of the material plate, the warped surface can contact the vertical pulley and drive the vertical pulley to slide upward.

[0010] The invention is further configured such that: the displacement detection unit includes a first detection camera, a second detection camera, and a third detection camera; the first detection camera is mounted on the frame and is used to photograph the top surface of the material plate from above to identify pits or scratches on the top surface; the second detection camera is mounted on the mounting plate and is used to detect the lateral displacement of the transverse pulley; the third detection camera is mounted on the mounting plate and is used to detect the vertical sliding displacement of the vertical pulley; when there is edge warping at the corner of the material plate, the warped part pushes against the transverse and vertical pulleys from the side, and the second detection camera indirectly detects the warping by photographing the lateral displacement and the third detection camera indirectly detects the warping by photographing the vertical displacement.

[0011] The present invention is further configured such that: there are multiple sets of transverse pulleys, which are arranged at intervals along the material plate conveying direction, and the spacing between adjacent transverse pulleys is configured to enable continuous detection of the material plate edge.

[0012] The invention is further configured such that: under normal conveying conditions, the vertical pulley maintains a non-contact gap with the top surface of the material plate; when there is edge warping at the corner of the material plate, the warped surface pushes upward against the vertical pulley, driving the vertical pulley to slide upward.

[0013] The invention is further configured such that: under normal conveying conditions, the first mounting component maintains a reference lateral position within the kidney hole; when there are burrs on the edge of the material plate, the burr portion pushes the lateral pulley along the lateral direction, and the first mounting component generates an adaptive lateral displacement along the kidney hole; after the burr passes, the reset spring pushes the first mounting component and the lateral pulley back to their initial positions.

[0014] The invention is further configured as follows: a second detection camera corresponds to a transverse pulley and is provided with a first preset threshold, which is the upper limit of the allowable transverse fluctuation range of the transverse pulley under normal conveying conditions; a third detection camera corresponds to a vertical pulley and is provided with a second preset threshold, which is the upper limit of the allowable vertical fluctuation range of the vertical pulley under normal conveying conditions; when the transverse displacement exceeds the first preset threshold and the vertical displacement does not exceed the second preset threshold, it is determined that there are burrs or depressions on the edge of the material plate; when the transverse displacement exceeds the first preset threshold and the vertical displacement exceeds the second preset threshold, it is determined that there is edge warping at the corner of the material plate; when the first detection camera detects that there are uneven defects on the top surface of the material plate, the displacement detection unit records the coordinates of the defect position; the displacement detection unit sends the judgment result and the corresponding position coordinates to the stamping machine so that the stamping machine can avoid the area in the subsequent stamping process.

[0015] The invention is further configured such that: a frame and abutment unit are provided on both sides of the stamping machine, and the abutment units on both sides are arranged symmetrically; when the material plate is conveyed, the transverse pulleys on both sides abut against the two side edges of the material plate simultaneously, and the vertical pulleys on both sides abut against the top two sides of the material plate simultaneously.

[0016] The present invention is further configured such that: when it is determined that the edge is warped, the warping height of the material plate edge is determined according to the vertical displacement detected by the third detection camera; and the steepness of the material plate edge warping is determined according to the ratio of the lateral displacement detected by the second detection camera to the vertical displacement detected by the third detection camera.

[0017] By adopting the above technical solution, when the corner of the material plate warps, the warped part pushes against the horizontal and vertical pulleys from the side. The second and third detection cameras indirectly obtain the warping information by shooting the displacement of the pulleys, which makes up for the inability of a single top camera to stably detect edge warping.

[0018] In summary, this application includes at least one of the following beneficial technical effects: By setting up the abutment unit, even if there are burrs on the edge of the material plate, the transverse pulley can adaptively avoid them along the kidney hole to prevent jamming and ensure that the material plate is stably conveyed to the stamping area without affecting the subsequent continuous stamping cycle.

[0019] By setting up a displacement detection unit, when the corner of the material plate warps, the warped part pushes against the horizontal and vertical pulleys from the side. The second and third detection cameras indirectly obtain warping information by shooting the displacement of the pulleys, which makes up for the inability of a single top camera to stably detect edge warping. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the feeding machine for processing vehicle body closure parts according to the present invention; Figure 2 This is a front view of the structure of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial three-dimensional structural diagram of the contact unit of the present invention; Figure 5 This is a partial three-dimensional structural diagram of the displacement detection unit of the present invention; Figure 6 This is a perspective structural diagram of the first and second mounting components of the present invention; Figure 7 This is a front cross-sectional view of the material plate under normal conveying conditions according to the present invention; Figure 8 This is a frontal cross-sectional view of the material plate of the present invention under the condition of edge warping.

[0021] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Clamping and conveying unit; 2. Abutting unit; 21. Mounting plate; 22. Horizontal pulley; 23. Vertical pulley; 24. First mounting component; 25. Positioning rod; 26. Return spring; 27. Second mounting component; 201. Displacement detection unit; 2011. First detection camera; 2012. Second detection camera; 2013. Third detection camera. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] Please see Figures 1-8 The present invention provides the following technical solutions: Example 1: In order to solve the technical problem in the prior art that when the feeder is conveying a long plate, the burrs on the edge of the plate are easily jammed with the lateral limiting roller, which leads to the interruption of conveying, damage to the plate, or affects the subsequent continuous stamping cycle.

[0025] The device includes a stamping press and a frame 1 located beside the stamping press. The frame 1 is equipped with a clamping and conveying section 11 for conveying material plates, and an abutment unit 2 for restricting the material plates on both sides and top during the conveying process. The abutment unit 2 includes a pair of mounting plates 21, at least one set of transverse pulleys 22, and at least one set of vertical pulleys 23. The pair of mounting plates 21 are respectively fixed to the top sides of the frame 1. The transverse pulleys 22 are slidably mounted on the mounting plates 21, and the mounting plates 21 are provided with recessed holes for guiding and restricting the transverse sliding stroke of the transverse pulleys 22. The outer side of the transverse pulleys 22 has a chamfered structure. The material plate is used to guide the edge of the material plate to contact and drive the transverse pulley 22 to move laterally when the material plate is pushed and conveyed by the clamping and conveying unit 11; the vertical pulley 23 is vertically slidably mounted on the transverse pulley 22, the vertical pulley 23 is used to abut the top of the material plate, and when the material plate has edge warping, it can be driven to slide upward by the warped surface; the abutment unit 2 also includes a displacement detection unit 201, which includes at least one detection camera, used to detect the lateral displacement of the transverse pulley 22 and the vertical displacement of the vertical pulley 23, and to determine whether there are burrs or warping on the edge of the material plate based on the detected displacement.

[0026] The chamfered structure on the outer side of the transverse pulley 22 guides the edge of the material plate to contact the pulley when the material plate is pushed by the clamping and conveying part 11, driving the transverse pulley 22 to move laterally, thereby adapting to changes in the width of the material plate. The vertical pulley 23 can slide vertically. When the edge of the material plate is warped upwards, the warped surface pushes against the vertical pulley 23, driving it to slide upwards. The displacement detection unit 201 monitors the lateral displacement of the transverse pulley 22 and the vertical displacement of the vertical pulley 23 in real time, and determines whether there are burrs or warping on the edge of the material plate based on whether the displacement exceeds a preset threshold.

[0027] See Figure 4 and Figure 5 The abutment unit 2 also includes a first mounting member 24, a positioning rod 25, and a return spring 26. The first mounting member 24 is mounted on the transverse pulley 22 and has a cylindrical structure. The first mounting member 24 is slidably mounted in the kidney hole. The positioning rod 25 passes through the kidney hole and is clearance-fitted with the first mounting member 24. A return spring 26 is provided on the outside of the positioning rod 25. One end of the return spring 26 abuts against the side of the first mounting member 24, and the other end of the return spring 26 abuts against the kidney hole. When there are burrs or unevenness on both sides of the material plate, the transverse pulley 22 can move along the kidney hole to adaptively avoid the burr parts, and after the burr passes, it is driven by the return spring 26 to return to the reference transverse position.

[0028] When burrs are present on the edge of the material plate, direct contact between the burrs and the rollers can cause jamming or scratches. This device features a first mounting component 24 on the transverse pulley 22. The first mounting component 24 is cylindrical and slidably mounted within the kidney-shaped hole of the mounting plate 21. A positioning rod 25 passes through the kidney-shaped hole, and the positioning rod 25 is clearance-fitted with the first mounting component 24. A return spring 26 is sleeved on the outside of the positioning rod 25, with one end abutting against the side of the first mounting component 24 and the other end abutting against the end of the kidney-shaped hole. When a burr passes over the edge of the material plate, the burr pushes the transverse pulley 22 laterally, and the first mounting component 24 adaptively moves laterally along the kidney-shaped hole, allowing the transverse pulley 22 to avoid the burr. After the burr passes, the elastic force of the return spring 26 pushes the first mounting component 24 and the transverse pulley 22 back to the predetermined transverse position.

[0029] See Figure 6 The abutment unit 2 also includes a second mounting member 27; the second mounting member 27 is slidably disposed on the first mounting member 24, and the bottom of the second mounting member 27 is connected to the vertical pulley 23; the first mounting member 24 is provided with a vertical spline groove, and the second mounting member 27 slides in cooperation with the vertical spline groove to restrict the vertical sliding of the second mounting member 27; when there is edge warping at the corner of the material plate, the warped surface can contact the vertical pulley 23 and drive the vertical pulley 23 to slide upward.

[0030] When the corner of the material plate warps upward, the warped surface pushes against the vertical pulley 23, driving the second mounting part 27 to slide upward along the vertical spline groove, causing the vertical pulley 23 to generate a vertical displacement relative to the horizontal pulley 22. This vertical displacement is captured by the displacement detection unit 201 and used as the basis for determining the existence of warping.

[0031] Example 2: In order to solve the problem that in the prior art, when a single detection camera is used to take pictures from above, the warping deformation direction of the material plate edge is close to parallel to the camera's optical axis, and there is reflective interference on the surface of the metal plate, the warping features in the images captured by the camera are often not obvious enough, which can easily lead to missed detections or misjudgments.

[0032] See Figure 2 , Figure 5 The displacement detection unit 201 includes a first detection camera 2011, a second detection camera 2012, and a third detection camera 2013. The first detection camera 2011 is mounted on the frame 1 and is used to photograph the top surface of the material plate from above to identify pits or scratches on the top surface. The second detection camera 2012 is mounted on the mounting plate 21 and is used to detect the lateral displacement of the transverse pulley 22. The third detection camera 2013 is mounted on the mounting plate 21 and is used to detect the vertical sliding displacement of the vertical pulley 23. When there is edge warping at the corner of the material plate, the warped part pushes against the transverse pulley 22 and the vertical pulley 23 from the side. The second detection camera 2012 indirectly detects the warping by photographing the lateral displacement and the third detection camera 2013 indirectly detects the warping by photographing the vertical displacement.

[0033] The first inspection camera 2011 is mounted on the frame 1 and photographs the top surface of the material plate from above to identify surface defects such as dents and scratches. The second inspection camera 2012 is mounted on the mounting plate 21 and photographs the lateral displacement of the transverse pulley 22 from the side. The third inspection camera 2013 is mounted on the mounting plate 21 and photographs the vertical displacement of the vertical pulley 23 from the side. When the corner of the material plate warps, the warped part pushes against the transverse pulley 22 and the vertical pulley 23 from the side. The second and third inspection cameras 2012 and 2013 indirectly obtain warping information by photographing the displacement of the pulleys, which makes up for the inability of a single top camera to stably detect edge warping.

[0034] See Figure 1 The transverse pulleys 22 are in multiple sets and are arranged at intervals along the material conveying direction. The spacing between adjacent transverse pulleys 22 is configured to enable continuous detection of the material plate edge.

[0035] A single detection point may miss minor local defects. This device uses multiple sets of transverse pulleys 22, spaced apart along the material conveying direction. The distance between adjacent pulleys is less than the minimum defect characteristic length of the material plate. For example, if the minimum length of a burr or warping that may appear on the material plate is 10mm, then the distance between adjacent pulleys is set to 8mm. When a local burr or warping exists at the edge of the material plate, at least one set of pulleys can contact the defect and generate displacement, thereby achieving continuous scanning detection of the material plate edge and eliminating blind spots.

[0036] See Figure 7 Under normal conveying conditions, the vertical pulley 23 maintains a non-contact gap with the top surface of the material plate; when there is edge warping at the corner of the material plate, the warped surface pushes upward against the vertical pulley 23, driving the vertical pulley 23 to slide upward.

[0037] Under normal conveying conditions, the vertical pulley 23 maintains a non-contact gap with the top surface of the material plate, for example, 1-2 mm, to avoid unnecessary friction and wear. When the corner of the material plate is warped upwards, the warped surface pushes against the vertical pulley 23, driving the vertical pulley 23 to slide upwards, so that the pulley contacts the material plate and generates a displacement signal.

[0038] See Figure 7 Under normal conveying conditions, the first mounting component 24 maintains a reference lateral position within the kidney hole; when there are burrs on the edge of the material plate, the burr part pushes the lateral pulley 22 laterally, and the first mounting component 24 generates an adaptive lateral displacement along the kidney hole; after the burr passes, the reset spring 26 pushes the first mounting component 24 and the lateral pulley 22 back to the initial position.

[0039] Under normal conveying conditions, the first mounting component 24 maintains a predetermined lateral position, i.e., the position of the lateral pulley 22, under the preload of the return spring 26, for guiding the linear conveying of the material plate. When there are burrs on the edge of the material plate, the burrs push the lateral pulley 22 laterally, and the first mounting component 24 undergoes adaptive lateral displacement along the waist hole, temporarily deviating from the reference position to avoid the burrs; after the burrs pass, the elastic force of the return spring 26 pushes the first mounting component 24 and the lateral pulley 22 back to the predetermined lateral position, providing an accurate guiding reference for subsequent material plates.

[0040] See Figure 8The second detection camera 2012 corresponds to the horizontal pulley 22 and is equipped with a first preset threshold, which is the upper limit of the allowable horizontal fluctuation range of the horizontal pulley 22 under normal conveying conditions. The third detection camera 2013 corresponds to the vertical pulley 23 and is equipped with a second preset threshold, which is the upper limit of the allowable vertical fluctuation range of the vertical pulley 23 under normal conveying conditions. When the horizontal displacement exceeds the first preset threshold and the vertical displacement does not exceed the second preset threshold, it is determined that there are burrs or depressions on the edge of the material plate. When the horizontal displacement exceeds the first preset threshold and the vertical displacement exceeds the second preset threshold, it is determined that there is edge warping at the corner of the material plate. When the first detection camera 2011 detects that there are uneven defects on the top surface of the material plate, the displacement detection unit 201 records the coordinates of the defect position. The displacement detection unit 201 sends the judgment result and the corresponding position coordinates to the stamping machine so that the stamping machine can avoid the area in the subsequent stamping process.

[0041] The first preset threshold is the upper limit of the allowable lateral fluctuation range of the transverse pulley 22 under normal conveying conditions, for example, 0.5mm, used to determine whether there are burrs or unevenness at the edge of the material plate; the second preset threshold is the upper limit of the allowable vertical fluctuation range of the vertical pulley 23 under normal conveying conditions, for example, 0.3mm, used to determine whether there is edge warping at the corner of the material plate. Both preset thresholds are abnormal thresholds, exceeding which indicates a defect in the corresponding direction. When the second detection camera 2012 detects that the lateral displacement exceeds the first preset threshold, it determines that there are burrs or unevenness at the edge of the material plate; when the third detection camera 2013 detects that the vertical displacement exceeds the second preset threshold, it determines that there is edge warping at the corner of the material plate; when the first detection camera 2011 detects that there are pits or scratches on the top surface of the material plate, it determines that there is a surface defect. The displacement detection unit 201 records the position coordinates of the above defects, burrs, or warping on the material plate and sends the coordinate data to the stamping machine. The stamping machine automatically avoids the defect area according to the received coordinate data and only stamps the qualified parts.

[0042] See Figure 1 The press is equipped with a frame 1 and abutment unit 2 on both sides, and the abutment units 2 on both sides are arranged symmetrically. When the material plate is conveyed, the horizontal pulleys 22 on both sides abut against the two sides of the material plate simultaneously, and the vertical pulleys 23 on both sides abut against the top two sides of the material plate simultaneously.

[0043] During the conveying of the material plate, the transverse pulleys 22 on both sides simultaneously abut against the two side edges of the material plate, applying symmetrical lateral constraint forces; the vertical pulleys 23 on both sides simultaneously abut against the top two sides of the material plate, applying symmetrical vertical constraint forces.

[0044] See Figure 5 and Figure 8When it is determined that the edge is warped, the height of the warped edge of the material plate is determined based on the vertical displacement detected by the third detection camera 2013; the steepness of the warped edge of the material plate is determined based on the ratio of the lateral displacement detected by the second detection camera 2012 to the vertical displacement detected by the third detection camera 2013.

[0045] When edge warping occurs at the corner of the material plate, the warped surface simultaneously pushes the transverse pulley 22 laterally and the vertical pulley 23 vertically, generating lateral and vertical displacements respectively. When the lateral displacement exceeds a first preset threshold and the vertical displacement exceeds a second preset threshold, it indicates that edge warping does indeed exist at that location, rather than a simple burr. At this time, the vertical displacement detected by the third detection camera 2013 directly reflects the height of the warped point; the larger the vertical displacement, the more severe the upward warping. Simultaneously, by comparing the ratio between the lateral and vertical displacements, the steepness of the warped point can be determined: a relatively large vertical displacement indicates a steeper warping, while a relatively large lateral displacement indicates a gentler warping. This quantitative information provides a precise reference for the press's avoidance decision regarding the warped point.

[0046] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A feeding machine for processing vehicle body closure parts, comprising a stamping press and a frame (1) disposed beside the stamping press, characterized in that: The frame (1) is provided with a clamping and conveying part (11) for conveying the material plate, and an abutting unit (2) for restricting the material plate on both sides and the top during the conveying process. The abutment unit (2) includes a pair of mounting plates (21), at least one set of transverse pulleys (22) and at least one set of vertical pulleys (23); A pair of mounting plates (21) are fixed to the top sides of the frame (1); The transverse pulley (22) is slidably mounted on the mounting plate (21), and the mounting plate (21) is provided with a kidney hole for guiding and limiting the transverse sliding stroke of the transverse pulley (22). The outer side of the transverse pulley (22) has a chamfered structure for guiding the edge of the material plate to contact and drive the transverse pulley (22) to move laterally when the material plate is pushed and conveyed by the clamping conveying part (11). The vertical pulley (23) is vertically slidably mounted on the horizontal pulley (22). The vertical pulley (23) is used to abut the top of the material plate and can be driven upward by the warped surface when the material plate has edge warping. The contact unit (2) also includes a displacement detection unit (201), which includes at least one detection camera for detecting the lateral displacement of the transverse pulley (22) and the vertical displacement of the vertical pulley (23), and for determining whether there are burrs or warping on the edge of the material plate based on the detected displacement.

2. The feeding machine for processing vehicle body closure parts according to claim 1, characterized in that: The abutment unit (2) also includes a first mounting part (24), a positioning rod (25), and a return spring (26); the first mounting part (24) is mounted on the transverse pulley (22), the first mounting part (24) is a cylindrical structure, and the first mounting part (24) is slidably mounted in the kidney hole; the positioning rod (25) is inserted in the kidney hole, and the positioning rod (25) and the first mounting part (24) are fitted with a clearance; a return spring (26) is provided on the outside of the positioning rod (25), one end of the return spring (26) abuts against the side of the first mounting part (24), and the other end of the return spring (26) abuts against the kidney hole; when there are burrs or unevenness on both sides of the material plate, the transverse pulley (22) can move along the kidney hole to adaptively avoid the burr part, and after the burr passes, it is driven by the return spring (26) to return to the reference transverse position.

3. The feeding machine for processing vehicle body closure parts according to claim 2, characterized in that: The abutment unit (2) also includes a second mounting member (27); the second mounting member (27) is slidably mounted on the first mounting member (24), and the bottom of the second mounting member (27) is connected to the vertical pulley (23); the first mounting member (24) has a vertical spline groove, and the second mounting member (27) slides with the vertical spline groove to restrict the vertical sliding of the second mounting member (27); when there is edge warping at the corner of the material plate, the warped surface can contact the vertical pulley (23) and drive the vertical pulley (23) to slide upward.

4. The feeding machine for processing vehicle body closure parts according to claim 3, characterized in that: The displacement detection unit (201) includes a first detection camera (2011), a second detection camera (2012), and a third detection camera (2013). The first detection camera (2011) is mounted on the frame (1) and is used to photograph the top surface of the material plate from above to identify pits or scratches on the top surface. The second detection camera (2012) is mounted on the mounting plate (21) and is used to detect the lateral displacement of the transverse pulley (22). The third detection camera (2013) is mounted on the mounting plate (21) and is used to detect the vertical sliding displacement of the vertical pulley (23). When there is edge warping at the corner of the material plate, the warped part pushes against the transverse pulley (22) and the vertical pulley (23) from the side. The second detection camera (2012) detects the warping indirectly by photographing the lateral displacement and the third detection camera (2013) detects the warping indirectly by photographing the vertical displacement.

5. The feeding machine for processing vehicle body closure parts according to claim 4, characterized in that: There are multiple sets of transverse pulleys (22), which are arranged at intervals along the material conveying direction. The spacing between adjacent transverse pulleys (22) is configured to enable continuous detection of the material plate edge.

6. The feeding machine for processing vehicle body closure parts according to claim 5, characterized in that: Under normal conveying conditions, the vertical pulley (23) maintains a non-contact gap with the top surface of the material plate; when there is edge warping at the corner of the material plate, the warped surface pushes upward against the vertical pulley (23), driving the vertical pulley (23) to slide upward.

7. The feeding machine for processing vehicle body closure parts according to claim 2, characterized in that: Under normal conveying conditions, the first mounting part (24) maintains a reference lateral position in the kidney hole; when there are burrs on the edge of the material plate, the burr part pushes the lateral pulley (22) in the lateral direction, and the first mounting part (24) generates an adaptive lateral displacement along the kidney hole; after the burr passes, the reset spring (26) pushes the first mounting part (24) and the lateral pulley (22) back to the initial position.

8. The feeding machine for processing vehicle body closure parts according to claim 4, characterized in that: The second detection camera (2012) corresponds to the horizontal pulley (22) and is equipped with a first preset threshold, which is the upper limit of the allowable horizontal fluctuation range of the horizontal pulley (22) under normal conveying conditions; the third detection camera (2013) corresponds to the vertical pulley (23) and is equipped with a second preset threshold, which is the upper limit of the allowable vertical fluctuation range of the vertical pulley (23) under normal conveying conditions; when the horizontal displacement exceeds the first preset threshold and the vertical displacement does not exceed the second preset threshold, it is determined that there are burrs or depressions on the edge of the material plate; when the horizontal displacement exceeds the first preset threshold and the vertical displacement exceeds the second preset threshold, it is determined that there is edge warping at the corner of the material plate; when the first detection camera (2011) detects that there are uneven defects on the top surface of the material plate, the displacement detection unit (201) records the coordinates of the defect position; the displacement detection unit (201) sends the judgment result and the corresponding position coordinates to the stamping machine so that the stamping machine can avoid the area in the subsequent stamping process.

9. The feeding machine for processing vehicle body closure parts according to claim 1, characterized in that: The press is equipped with a frame (1) and abutment unit (2) on both sides, and the abutment units (2) on both sides are arranged symmetrically. When the material plate is conveyed, the transverse pulleys (22) on both sides abut against the two sides of the material plate simultaneously, and the vertical pulleys (23) on both sides abut against the top two sides of the material plate simultaneously.

10. The feeding machine for processing vehicle body closure parts according to claim 8, characterized in that: When it is determined that the edge is warped, the height of the warping of the material plate edge is determined according to the vertical displacement detected by the third detection camera (2013); the steepness of the warping of the material plate edge is determined according to the ratio of the lateral displacement detected by the second detection camera (2012) to the vertical displacement detected by the third detection camera (2013).

Images