A visual inspection mechanism for hot-stamped sheet metal

Abstract

This invention relates to the field of visual inspection equipment technology, and discloses a visual inspection mechanism for hot stamping sheet metal. It includes a frame, a lead screw slide, an inspection device, and auxiliary devices. The auxiliary devices include a support plate, a positioning frame, a fixing frame, a servo reducer, a positioning sleeve, a locking rod, and a pushing assembly. During inspection, an external robot clamps and transports the product to a fixture for fixation. Then, the lead screw slide moves the product to a position below the inspection device for inspection. After inspection, if the surface is qualified, the servo reducer rotates and positions the positioning frame, exposing the other inspection surface of the product through a through-hole inspection cavity on the positioning frame. The inspection can then continue directly through the inspection device. After inspection, the lead screw slide continues to move, transporting the product to the discharge side of the frame. A picking robot on this side then transports the product to a qualified or abnormal conveyor line, thus achieving rapid inspection of double-sided sheet metal and improving processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of visual inspection equipment technology, and in particular to a visual inspection mechanism for hot stamping sheet metal. Background Technology

[0002] After hot stamping sheet metal processing, the surface needs to be inspected to ensure the quality of subsequent product processing. Traditional manual visual inspection is inefficient and is also subject to subjective human factors, resulting in inaccurate inspection quality.

[0003] In the current technology, most inspections are carried out through vision devices. Vision inspection refers to the process of converting the target into an image signal through machine vision products (i.e., image acquisition devices, which are divided into CMOS and CCD types), and transmitting it to a dedicated image processing system. Based on pixel distribution and information such as brightness and color, the signal is converted into a digital signal. The image system performs various operations on these signals to extract the features of the target, and then controls the operation of the equipment on site based on the judgment results.

[0004] However, the existing equipment has the following problems when in use: most of the existing equipment can only perform single-sided inspection. When both sides of the sheet metal need to be inspected, the sheet metal is usually removed after one side is completely inspected, and then the other side is inspected by another device. This method not only requires the addition of inspection equipment, but also affects the inspection efficiency due to the removal and reinstallation of the part after inspection. Summary of the Invention

[0005] The purpose of this invention is to provide a visual inspection mechanism for hot stamping sheet metal, which enables rapid inspection of double-sided sheet metal and improves processing efficiency.

[0006] To achieve the above objectives, the present invention provides a visual inspection mechanism for hot stamping sheet metal; it includes a frame on which a lead screw slide and an inspection device are mounted, and also includes auxiliary devices;

[0007] The auxiliary device includes a support plate, a positioning frame, a fixed frame, a servo reducer, a positioning sleeve, a locking rod, and a pushing assembly. The support plate is mounted on the slide of the lead screw slide table. The positioning frame is rotatably mounted between the support plates and has a sheet metal clamp mounted on top, with a through detection cavity. The fixed frame is mounted on the support plate. The servo reducer is mounted on the fixed frame, and its splined end is inserted into the spline cavity on the mounting shaft on the left side of the positioning frame. The positioning sleeve is mounted on the positioning frame. The locking rod is slidably inserted into the positioning sleeve. The pushing assembly is located on the side of the support plate near the locking rod.

[0008] The detection device includes a mounting frame and a mating assembly. The mounting frame is detachably connected to the frame and is located at the middle position along the length of the frame. The mating assembly is located on the top of the mounting frame.

[0009] The mating components include a detection camera and a mating light source. The detection camera is detachably connected to the mounting bracket. The mating light source is detachably connected to the mounting bracket and is symmetrically arranged on both sides of the detection camera.

[0010] The pushing component includes a U-shaped frame and a power component. The U-shaped frame is detachably connected to the support plate and is located on the side of the support plate near the locking rod, and is slidably connected to the locking rod. The power component is disposed on the side of the U-shaped frame near the locking rod.

[0011] The power component includes a hydraulic cylinder and a connecting plate. The hydraulic cylinder is mounted on the U-shaped frame, and the connecting plate is fixedly connected to its output end. The connecting plate is detachably connected to the disc of the locking rod.

[0012] The U-shaped frame is equipped with a linear bearing that cooperates with the locking rod to achieve sliding isolation.

[0013] The system also includes a protective device, which consists of a limiting block and a protective component. The limiting block is detachably connected to the frame and is located on both sides of the servo motor of the lead screw slide, and is provided with a non-penetrating T-shaped groove. The protective component is located on the top of the limiting block.

[0014] The protective assembly includes a top plate and a support member, with the top plate positioned above the servo motor of the lead screw slide via the support member.

[0015] The supporting component includes a T-shaped plate and a tie rod. The T-shaped plate is integrally formed with the top plate and is fixed to the limiting block by the tie rod. The tie rod passes through the T-shaped plate and is threadedly connected to the limiting block.

[0016] The top plate has multiple support rods integrally installed at its bottom, and the bottom of the support rods abuts against the frame.

[0017] This invention discloses a visual inspection mechanism for hot-stamped sheet metal. During inspection, an external robot clamps and transports the product to a fixture for fixation. Then, a lead screw slide moves the product to a position below the inspection device for inspection. If the inspected surface is qualified, a servo reducer actuates to rotate and position the positioning frame, exposing the other inspected surface of the product through a through-hole inspection cavity on the positioning frame. The inspection can then continue directly through the inspection device. After inspection, the lead screw slide continues to move, transporting the product to the discharge side of the frame. The unloading robot on this side then transports the product to the qualified or abnormal conveyor line, thereby achieving rapid inspection of double-sided sheet metal and improving processing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the overall structure of the visual inspection mechanism for hot stamping sheet metal according to the first embodiment of the present invention.

[0020] Figure 2 This is the first embodiment of the present invention. Figure 1 Enlarged view of point A in the middle.

[0021] Figure 3 This is a schematic diagram of the protective device according to the second embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the overall structure of the visual inspection mechanism for hot stamping sheet metal according to the third embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the insertion device according to the third embodiment of the present invention.

[0024] In the diagram: 101-Frame, 102-Screw slide, 103-Support plate, 104-Positioning frame, 105-Detection chamber, 106-Fixed frame, 107-Servo reducer, 108-Positioning sleeve, 109-Locking rod, 110-Mounting frame, 111-Detection camera, 112-Matching light source, 113-U-shaped frame, 114-Hydraulic cylinder, 115-Connecting plate, 116-Linear bearing, 201-Limit block, 202-Top plate, 203-T-shaped plate, 204-Tie rod, 205-Support rod, 301-Limit frame, 302-Slide plate, 303-Locking cap, 304-Rectangular plate, 305-Binding block. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0026] First embodiment:

[0027] like Figure 1 and Figure 2 As shown, where Figure 1 This is a schematic diagram of the overall structure of a vision inspection mechanism used for hot stamping sheet metal. Figure 2 yes Figure 1The enlarged view at point A shows that this invention provides a visual inspection mechanism for hot-stamped sheet metal, comprising a frame 101, a lead screw slide 102, an inspection device, and auxiliary devices. The auxiliary devices include a support plate 103, a positioning frame 104, a fixing frame 106, a servo reducer 107, a positioning sleeve 108, a locking rod 109, and a pushing assembly. The inspection device includes a mounting frame 110 and a mating assembly. The mating assembly includes an inspection camera 111 and a mating light source 112. The pushing assembly includes a U-shaped frame 113 and a power component. The power component includes a hydraulic cylinder 114 and a connecting plate 115. This solution enables rapid inspection of double-sided sheet metal, improving processing efficiency. It is understood that this solution can improve processing efficiency.

[0028] In this embodiment, a lead screw slide 102 and a detection device are mounted on the frame 101. The structure of the lead screw slide 102 is similar to the X-axis worktable structure of a vertical machining center in the prior art. A telescopic protective sleeve is provided on the outside of the lead screw of the lead screw slide 102 for dust prevention. In addition, all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as positioning pins, bolts, rivets, and welding, which are mature in the prior art. When corresponding parts need to be sealed during installation, sealing gaskets or sealant can be used. Finally, the control method of this application is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect the structure, shape and their combination, the control method and circuit connection will not be explained in detail. The device is powered by a built-in power supply or an external power supply.

[0029] Preferably, the support plate 103 is mounted on the slide of the lead screw slide table 102, the positioning frame 104 is rotatably mounted between the support plates 103, and a sheet metal clamp is mounted on the top, with a through detection cavity 105. The fixing frame 106 is mounted on the support plate 103, the servo reducer 107 is mounted on the fixing frame 106, and the spline end of its output end is inserted into the spline cavity on the mounting shaft on the left side of the positioning frame 104. The positioning sleeve 108 is mounted on the positioning frame 104, and the locking rod 109 is slidably inserted into the positioning sleeve 108. The pushing assembly is located on the side of the support plate 103 near the locking rod 109. The top of the support plate 103 is provided with a bearing mounting cavity to facilitate the installation of the mounting shafts on both sides of the positioning frame 104. The drive motor of the servo reducer 107 is a servo motor with a brake mechanism and an encoder, which facilitates rotation angle control. Its gearbox is fixed to the fixing frame 106 by positioning pins and bolts. The positioning sleeves 108 are symmetrically installed and have a T-shaped structure. The discs are fixed by positioning pins and bolts. The locking rod 109 is T-shaped. The clamps (not shown in the figure) on the positioning frame 104 are mature pneumatic working clamps with existing technology, and the clamps are not the structure protected by this application.

[0030] Preferably, the mounting bracket 110 is detachably connected to the frame 101 and is located at the middle position along the length of the frame 101; the mating assembly is disposed on the top of the mounting bracket 110. The mounting bracket 110 consists of detachable supports on both sides and a detachable horizontal plate on the top. The mating assembly is disposed on the horizontal plate.

[0031] Preferably, the detection camera 111 is detachably connected to the mounting bracket 110; the mating light source 112 is detachably connected to the mounting bracket 110 and symmetrically arranged on both sides of the detection camera 111. The housing of the detection camera 111 is fixed by bolts, and the mating light source 112 is used to cooperate with the detection camera 111 during operation.

[0032] Preferably, the U-shaped frame 113 is detachably connected to the support plate 103 and is located on the side of the support plate 103 near the locking rod 109, and is slidably connected to the locking rod 109; the power component is disposed on the side of the U-shaped frame 113 near the locking rod 109. The U-shaped frame 113 is provided with a through hole to facilitate the installation of the locking rod 109.

[0033] Preferably, the hydraulic cylinder 114 is mounted on the U-shaped frame 113, and the connecting plate 115 is fixedly connected to its output end; the connecting plate 115 is detachably connected to the disc of the locking rod 109. The hydraulic cylinder 114 is a product capable of installing a magnetic ring switch, facilitating feedback to the control system on the engagement position of the locking rod 109 and the positioning sleeve 108. When the positioning frame 104 needs to be rotated, the hydraulic cylinder 114 first retracts, completely disengaging the locking rod 109 from the positioning sleeve 108. Then, the servo reducer 107 drives the positioning frame 104 to rotate. After rotation to the correct position, the hydraulic cylinder 114 actuates, pushing the locking rod 109 into the positioning sleeve 108 for locking engagement. The connecting plate 115 is fixed to the disc of the locking rod 109 by positioning pins and bolts.

[0034] Preferably, a linear bearing 116 is installed on the U-shaped frame 113 to cooperate with the locking rod 109, achieving sliding isolation. The linear bearing 116 adopts a T-shaped linear sliding bearing of the prior art, which avoids sliding contact between the locking rod 109 and the U-shaped frame 113 support, thus helping to extend the service life of the U-shaped frame 113.

[0035] When using this invention to achieve rapid inspection of double-sided sheet metal and improve processing efficiency, during inspection, an external robot (not shown in the figure) clamps and transports the product to a fixture for fixation. Then, the lead screw slide 102 moves the product to the area below the inspection device for inspection. After inspection, if the affected side is qualified, the servo reducer 107 actuates to rotate and position the positioning frame 104. After rotation into position, the hydraulic cylinder 114 actuates to push the locking rod 109 into the positioning sleeve 108 for locking, thus allowing the other inspection side of the product to pass through. The product is exposed through the through-hole detection cavity 105 on the positioning frame 104, and can then be directly detected by the detection device. After the detection is completed, the lead screw slide 102 continues to move, conveying the product to the discharge side of the frame 101. The picking robot (not shown in the figure) on this side conveys the product to the qualified conveyor line or the abnormal conveyor line. If the product is unqualified in the first detection, the lead screw slide 102 continues to move to convey the product to the picking robot, thereby realizing the rapid detection of double-sided sheet metal and improving processing efficiency.

[0036] Second embodiment:

[0037] like Figure 3 As shown, where Figure 3This is a schematic diagram of the protective device. Based on the first embodiment, the present invention provides a visual inspection mechanism for hot stamping sheet metal that also includes a protective device. The protective device includes a limiting block 201 and a protective component. The protective component includes a top plate 202 and a supporting member. The supporting member includes a T-shaped plate 203 and a pull rod 204.

[0038] Preferably, the limiting block 201 is detachably connected to the frame 101 and is located on both sides of the servo motor of the lead screw slide 102, and is provided with a non-penetrating T-shaped groove; the protective component is located on the top of the limiting block 201. The limiting block 201 is fixed by positioning pins and bolts arranged from bottom to top, and the non-penetrating T-shaped groove facilitates the limiting of the T-shaped plate 203.

[0039] Preferably, the top plate 202 is mounted above the servo motor of the lead screw slide 102 via the supporting member. The top plate 202 helps to prevent the product from falling and impacting the servo motor of the lead screw slide 102 when it is being loaded onto the fixture.

[0040] Preferably, the T-shaped plate 203 is integrally formed with the top plate 202 and is fixed to the limiting block 201 by the pull rod 204; the pull rod 204 passes through the T-shaped plate 203 and is threadedly connected to the limiting block 201. The T-shaped end at the bottom of the T-shaped plate 203 directly matches the T-shaped groove, and a through hole is provided on the T-shaped end. Threaded holes are provided on the side wall of the limiting block 201 where the T-shaped groove does not pass through, facilitating the installation of the pull rod 204. The pull rod 204 has a T-shaped structure.

[0041] Preferably, the bottom of the top plate 202 is integrally provided with multiple support rods 205, the bottom of which abuts against the frame 101. The support rods 205 are used to improve the stability of the top plate 202 when subjected to impact from vertically falling objects.

[0042] In this embodiment, the top plate 202 structure helps to prevent the product from falling and impacting the servo motor of the lead screw slide 102 when it is being loaded onto the fixture, thereby improving the safety of the equipment.

[0043] Third embodiment:

[0044] like Figure 4 and Figure 5 As shown, where Figure 4 This is a schematic diagram of the overall structure of a vision inspection mechanism used for hot stamping sheet metal. Figure 5 This is a schematic diagram of the insertion device. Based on the first embodiment, the present invention provides a visual inspection mechanism for hot stamping sheet metal, which also includes an insertion device. The insertion device includes a limiting frame 301, a sliding plate 302, and a locking cap 303.

[0045] The limiting frame 301 is installed on the top of the mounting bracket 110. The sliding plate 302 is detachably connected to the limiting frame 301, and its stepped shaft passes through the rectangular plate 304 on the limiting frame 301. The locking cap 303 is threaded to the stepped external thread end on the stepped shaft and abuts against the rectangular plate 304. The limiting frame 301 is fixed by bolts. A U-shaped binding block 305 is installed on its inner bottom near the detection camera 111. The binding block 305 is provided with a semi-circular groove that matches the working cable of the detection camera 111 and the cooperating light source 112, which facilitates the binding of the cable with cable ties. The opening of the binding block 305 faces the vertical side wall of the limiting frame 301. The top of the limiting frame 301 is provided with a non-penetrating sliding groove. The sliding grooves are symmetrically arranged to facilitate the direct installation of the sliding plate 302. The rectangular plate 304 is fixed by positioning pins and bolts.

[0046] In this embodiment, the structure of the limiting frame 301, the sliding plate 302, and the locking cap 303 can provide protection when the working cables of the detection camera 111 and the cooperating light source 112 are installed.

[0047] It should be noted that the illustrations provided in the above embodiments are for illustrative purposes only and represent schematic diagrams, not actual physical images. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the figures. All technologies, shapes, and structural parts not described in detail in this invention are well-known technologies.

[0048] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A visual inspection mechanism for hot stamping sheet metal, comprising a frame on which a lead screw slide and an inspection device are mounted; Its features are, It also includes auxiliary devices; The auxiliary device includes a support plate, a positioning frame, a fixed frame, a servo reducer, a positioning sleeve, a locking rod, and a pushing assembly. The support plate is mounted on the slide of the lead screw slide table. The positioning frame is rotatably mounted between the support plates and has a sheet metal clamp mounted on top, with a through detection cavity. The fixed frame is mounted on the support plate. The servo reducer is mounted on the fixed frame, and its splined end is inserted into the spline cavity on the mounting shaft on the left side of the positioning frame. The positioning sleeve is mounted on the positioning frame. The locking rod is slidably inserted into the positioning sleeve. The pushing assembly is located on the side of the support plate near the locking rod.

2. The visual inspection mechanism for hot stamping sheet metal as described in claim 1, characterized in that, The testing device includes a mounting frame and a mating assembly. The mounting frame is detachably connected to the frame and is located at the middle position along the length of the frame. The mating assembly is disposed on the top of the mounting frame.

3. The visual inspection mechanism for hot stamping sheet metal as described in claim 2, characterized in that, The mating components include a detection camera and a mating light source. The detection camera is detachably connected to the mounting bracket. The mating light source is detachably connected to the mounting bracket and is symmetrically arranged on both sides of the detection camera.

4. The visual inspection mechanism for hot stamping sheet metal as described in claim 1, characterized in that, The pushing assembly includes a U-shaped frame and a power component. The U-shaped frame is detachably connected to the support plate and is located on the side of the support plate near the locking rod, and is slidably connected to the locking rod. The power component is disposed on the side of the U-shaped frame near the locking rod.

5. The visual inspection mechanism for hot stamping sheet metal as described in claim 4, characterized in that, The power component includes a hydraulic cylinder and a connecting plate. The hydraulic cylinder is mounted on the U-shaped frame, and the connecting plate is fixedly connected to its output end. The connecting plate is detachably connected to the disc of the locking rod.

6. The visual inspection mechanism for hot stamping sheet metal as described in claim 5, characterized in that, A linear bearing is installed on the U-shaped frame to cooperate with the locking rod, thereby achieving sliding isolation.

7. The visual inspection mechanism for hot stamping sheet metal as described in claim 1, characterized in that, It also includes a protective device, which includes a limiting block and a protective component. The limiting block is detachably connected to the frame and is located on both sides of the servo motor of the lead screw slide, and is provided with a non-penetrating T-shaped groove. The protective component is located on the top of the limiting block.

8. The visual inspection mechanism for hot stamping sheet metal as described in claim 7, characterized in that, The protective assembly includes a top plate and a support member, with the top plate positioned above the servo motor of the lead screw slide via the support member.

9. The visual inspection mechanism for hot stamping sheet metal as described in claim 8, characterized in that, The supporting component includes a T-shaped plate and a tie rod. The T-shaped plate is integrally formed with the top plate and is fixed to the limiting block by the tie rod. The tie rod passes through the T-shaped plate and is threadedly connected to the limiting block.

10. The visual inspection mechanism for hot stamping sheet metal as described in claim 8, characterized in that, Multiple support rods are integrally installed at the bottom of the top plate, and the bottom of the support rods abuts against the frame.

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