An automated board loading and unloading production line

Abstract

To address the issues of low efficiency and precision in existing sheet metal processing, this invention provides an automated sheet metal loading and unloading production line, comprising, from front to back, a loading mechanism, a gravity centering platform, a loading worktable, a first processing unit, an intermediate roller conveyor, a second processing unit, and an unloading mechanism, as well as: a feeding device equipped with two sets of clamping mechanisms located on the front and rear sides of the intermediate roller conveyor; a side positioning device fixedly connected to the inner side of the clamping mechanisms; an end positioning device located behind the loading worktable; a transfer platform located below the intermediate roller conveyor, comprising a base, a height adjustment mechanism connected above the base, and a sheet metal fixing device connected above the height adjustment mechanism; and a lateral adjustment mechanism, including a connection between the base and the height adjustment mechanism, for moving the height adjustment mechanism and the sheet metal fixing device along the width direction of the sheet metal. This invention can effectively improve sheet metal processing efficiency and precision.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing equipment technology, and in particular to an automatic sheet metal loading and unloading production line. Background Technology

[0002] Existing sheet metal production lines typically use a single clamping mechanism to hold the sheet metal and process it sequentially through the processing units along the processing direction. Since the feeding device only contains one clamping mechanism, the sheet metal raw materials can only be processed in sequence, which greatly reduces the processing efficiency of the production line.

[0003] Moreover, during the processing, the sheet metal is subject to factors such as compression and vibration from the processing unit, which can cause the clamping mechanism to be unable to hold the sheet metal stably, thereby affecting the processing accuracy of subsequent processing units. Summary of the Invention

[0004] To address the problems of low efficiency and low precision in existing sheet metal processing, this invention provides an automated sheet metal loading and unloading production line, employing the following technical solution:

[0005] An automated sheet metal loading and unloading production line, characterized in that it comprises, from front to back, a loading mechanism, a gravity centering platform, a loading worktable, a first processing unit, an intermediate roller conveyor, a second processing unit, an unloading worktable, and an unloading mechanism, and,

[0006] The feeding device is distributed along the front and back direction of the plate processing on the outside of the loading worktable, the first processing unit, the intermediate roller conveyor and the second processing unit. The feeding device is equipped with a clamping mechanism that slides along the front and back direction. There are two sets of clamping mechanisms, which are located on the front and back sides of the intermediate roller conveyor respectively.

[0007] A side positioning device is fixedly connected to the inside of the clamping mechanism, and the length of the side positioning device is adjustable in the width direction of the plate.

[0008] An end positioning device is installed at one end of the loading workbench near the first processing unit, and the height of the end positioning device is adjustable.

[0009] The transfer platform is located below the intermediate roller conveyor and consists of a base, a height adjustment mechanism connected above the base, and a plate fixing device connected above the height adjustment mechanism. The height adjustment mechanism is used to drive the plate fixing device to extend a certain height above the intermediate roller conveyor and retract it to below the intermediate roller conveyor.

[0010] A lateral adjustment mechanism includes a drive mechanism connected between a base and a height adjustment mechanism, used to drive the height adjustment mechanism and the plate fixing device to move along the width direction of the plate;

[0011] The clamping mechanism is equipped with a first positioning switch and a second positioning switch on its inner side and the end positioning device on its upper side, respectively. A position detection mechanism for detecting the end position of the plate in the processing direction is provided on the outer side of the intermediate roller conveyor in front of the feed port of the second processing unit.

[0012] Furthermore, the feeding device includes a feeding frame and a feeding guide rail fixedly connected above the feeding frame, the lengths of which are horizontally distributed along the processing direction of the sheet material.

[0013] Furthermore, the clamping mechanism includes a sliding plate, a drive motor, a rack, and clamping pliers. The rack is fixedly connected to the feeding frame and its length is distributed along the processing direction of the sheet material. The sliding plate is slidably connected to the feeding guide rail. The output end of the drive motor is connected to the rack through gear meshing. The clamping pliers are fixedly connected to the sliding plate.

[0014] Furthermore, the side positioning device includes a hydraulic cylinder and a positioning column. The hydraulic cylinder is fixedly connected to the clamping clamp, and the piston rod axis of the hydraulic cylinder is distributed along the direction perpendicular to the length of the feeding guide rail. The positioning column is fixedly connected to the end of the piston rod of the hydraulic cylinder, and the first positioning switch is fixedly connected to the inside of the clamping clamp.

[0015] Furthermore, the end positioning device includes a positioning bracket, a positioning cylinder, and a positioning plate. The positioning bracket is located below the loading workbench. The piston rod of the positioning cylinder is vertically distributed and its upper end is fixedly connected to the positioning plate. It is used to drive the positioning plate to extend above the upper surface of the loading workbench and retract to below the upper surface of the loading workbench. The second positioning switch is fixedly connected to the side of the positioning plate near the loading workbench. A first guide post is vertically distributed between the positioning plate and the positioning bracket.

[0016] Furthermore, the height adjustment mechanism includes a sliding seat, a lifting cylinder, and a moving frame. The sliding seat is slidably connected to the base above the base along a direction perpendicular to the length of the feeding guide rail. The cylinder body of the lifting cylinder is fixedly connected to the sliding seat. The piston rod of the lifting cylinder is distributed in a vertical direction and its movable end is fixedly connected to the moving frame. A second guide column is provided between the moving frame and the sliding seat in a vertical direction.

[0017] Furthermore, the plate fixing device consists of multiple sets of fixing units spaced apart between the intermediate rollers. Each fixing unit consists of a fixing rod, a telescopic spring, an electromagnetic mounting frame, and an electromagnet. The fixing rod is fixedly connected above the height adjustment mechanism. The telescopic spring is distributed vertically and its upper and lower ends are fixedly connected to the electromagnetic mounting frame and the fixing rod, respectively. The electromagnet is fixedly connected above the electromagnetic mounting frame.

[0018] Furthermore, the driving mechanism includes a driving cylinder, the cylinder body of which is fixedly connected to the base, one end of the piston rod of the driving cylinder being fixedly connected to the sliding seat, and a third guide post being provided between the base and the sliding seat.

[0019] Furthermore, the position detection mechanism is provided in two sets and symmetrically arranged on the outer side of the middle roller conveyor near the second processing unit. The position detection mechanism includes a fixed base, a column fixedly connected to the fixed base, an adjusting cylinder, a slide plate, a switch bracket, and a photoelectric switch. The cylinder body of the adjusting cylinder is fixedly connected to the column, the piston rod of the adjusting cylinder is vertically distributed and its upper end is fixedly connected to the slide plate, the switch bracket is fixedly connected to the slide plate, and the photoelectric switch is fixedly connected to the switch bracket.

[0020] Furthermore, both the loading and unloading mechanisms consist of a truss, a longitudinal guide rail mounted on the truss, a transverse guide rail slidably connected above the longitudinal guide rail, and a robotic arm slidably connected to the transverse guide rail.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. Through the feeding mechanism, gravity-assisted middle platform, feeding worktable, feeding device, unloading worktable, unloading mechanism, and the front and rear clamping mechanisms set on the feeding device, and the transfer platform located at the middle roller conveyor, the automated processing of sheet material can be realized, while improving the processing efficiency of sheet material.

[0023] 2. Before processing, the raw material is positioned by the side positioning device on the front clamping mechanism and the end positioning device at the rear of the loading worktable. During processing, the raw material is repositioned by the side positioning device on the rear clamping mechanism and the lateral adjustment mechanism on the transfer platform. This ensures the position of the raw material in the subsequent processing, improves the processing accuracy, and avoids problems caused by inaccurate positioning due to external factors such as vibration of the processing device or assembly error of the feeding device, which may affect the processing accuracy.

[0024] 3. During the processing of the sheet metal, the two sets of clamping mechanisms are transferred on the transfer platform, so that the two sets of clamping mechanisms reciprocate between the starting position and the processing unit, and between the processing unit and the finished product frame, to improve the efficiency of the clamping mechanism and thus improve the efficiency of sheet metal processing.

[0025] 4. The transfer platform is set below the intermediate roller conveyor. During operation, the lifting cylinder drives the moving frame and electromagnet to move up and down to fix the sheet material, improving the overall structural compactness. Moreover, the electromagnet and magnet mounting frame are connected to the moving frame through a telescopic spring. When the lifting cylinder drives the electromagnet to rise, the presence of the telescopic spring allows the electromagnet to be higher than the upper end of the intermediate roller conveyor by a certain height, thereby improving the success rate of the electromagnet fixing the sheet material. After the electromagnet fixes the sheet material, the sheet material can compress the telescopic spring under its own gravity, so that the lower end of the sheet material contacts the intermediate roller conveyor.

[0026] 5. The lateral adjustment mechanism, height adjustment structure, and sheet metal fixing device together form a transfer platform, simplifying the space for component arrangement. The purpose is to complete the handover work between the front clamping mechanism and the rear clamping mechanism, while simultaneously repositioning the sheet metal material on the side through the lateral adjustment mechanism. This ensures the accurate position of the rear clamping mechanism clamping the sheet metal material on the side in the width direction. The rear clamping mechanism clamps the sheet metal material and moves it backward. Through photoelectric switches of two sets of position detection mechanisms, the accurate position of the front and rear ends of the sheet metal material is ensured, thereby guaranteeing the edge distance processing accuracy of the sheet metal material entering the second processing unit. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 Right view of the structure of the present invention

[0029] Figure 3 Top view of the structure of the present invention

[0030] Figure 4 Schematic diagram of the feeding mechanism

[0031] Figure 5 Schematic diagram of the feeding device

[0032] Figure 6 for Figure 5 Enlarged diagram at point A

[0033] Figure 7 Schematic diagram of clamp structure

[0034] Figure 8 Schematic diagram of the end positioning device

[0035] Figure 9 Left view of the end positioning device

[0036] Figure 10 Schematic diagram of the transfer platform and intermediate roller conveyor structure

[0037] Figure 11 for Figure 10 Main view

[0038] Figure 12 for Figure 10 Top view

[0039] Figure 13 Schematic diagram of the transfer platform structure

[0040] Figure 14 Main view of the transfer platform structure

[0041] Figure 15 Left view of the transition platform structure

[0042] Figure 16 Top view of the transfer platform structure

[0043] Figure 17 and Figure 18 3D diagram of the position detection mechanism

[0044] Among them, 1-feeding mechanism, 101-truss, 102-longitudinal guide rail, 103-longitudinal gear and rack transmission mechanism, 104-longitudinal slider, 105-transverse guide rail, 106-transverse gear and rack transmission mechanism, 107-transverse slider, 108-robotic arm;

[0045] 2-Gravity on the central platform;

[0046] 3- Loading workbench;

[0047] 4-First processing unit;

[0048] 5-Intermediate roller conveyor;

[0049] 6-Second processing unit;

[0050] 7- Unloading workbench;

[0051] 8- Feeding mechanism;

[0052] 9-feeding device, 901-feeding frame, 902-feeding guide rail;

[0053] 10-Clamping mechanism, 1001-Slide plate, 1002-Drive motor, 1003-Rack, 1004-Clamping clamp, 1005-Hydraulic cylinder, 1006-Positioning pin, 1007-First position switch, 1008-Connecting plate;

[0054] 11-End positioning device, 1101-Positioning bracket, 1102-Positioning cylinder, 1103-Positioning plate, 1104-Second position switch, 1105-First guide post;

[0055] 12-Transfer platform, 1201-Base, 1202-Sliding seat, 1203-Lifting cylinder, 1204-Second guide column, 1205-Moving frame, 1206-Fixed rod, 1207-Telescopic spring, 1208-Magnet mounting bracket, 1209-Electromagnet, 1210-Drive cylinder, 1211-Third guide column, 1212-Mounting plate;

[0056] 13-Position detection mechanism, 1301-Fixed base, 1302-Column, 1303-Adjusting cylinder, 1304-Guide plate, 1305-Switch bracket, 1306-Photoelectric switch, 1307-Slide groove, 1308-Slide rail. Detailed Implementation

[0057] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0058] In the description of the invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the view direction or positional relationship, and are only for the convenience of describing the invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0059] In this embodiment, for ease of description, the front-back direction is the processing sequence direction of the sheet metal, and the left-right direction is the width direction of the sheet metal.

[0060] like Figures 1-3The automatic board loading and unloading production line shown includes a loading mechanism, a gravity centering platform 2, a loading worktable 3, a first processing unit 4, an intermediate roller conveyor 5, a second processing unit 6, and an unloading worktable 7 arranged sequentially from front to back. The loading mechanism 1 is arranged above the gravity centering platform 2 and the loading worktable 3, and the unloading mechanism 8 is arranged above the unloading worktable 7. It also includes a feeding device 9, which is distributed from front to back on the outer sides of the loading worktable 3, the first processing unit 4, the intermediate roller conveyor 5, the second processing unit 6, and the unloading worktable 7. A set of clamping mechanisms 10 is arranged at the front and rear of the feeding device 9. A transfer platform 12 is arranged below the intermediate roller conveyor 5. A side positioning mechanism is arranged on the side of the clamping mechanism 10 near the loading worktable 3. An end positioning device 11 is arranged between the loading worktable 3 and the first processing unit 4. A board fixing device is arranged on the transfer platform 12. Position detection mechanisms 13 are arranged on the left and right sides of the intermediate roller conveyor 5 near the feed port of the second processing unit 6.

[0061] Specifically, the feeding mechanism 1 and the unloading mechanism 8 have the same structure, such as... Figure 4 As shown, the entire assembly consists of a truss 101, longitudinal guide rails 102, a longitudinal gear and rack transmission mechanism 103, a longitudinal slider 104, a transverse guide rail 105, a transverse gear and rack transmission mechanism 106, a transverse slider 107, and a robotic arm 108. The longitudinal guide rails 102 are fixedly connected to the upper left and right sides of the truss 101, and their length is distributed back and forth along the plate processing direction. The transverse guide rails 105 are distributed left and right, and their left and right ends are fixedly connected to the longitudinal slider 104. The longitudinal slider 104 is equipped with a longitudinal gear and rack transmission mechanism 103, which can drive the transverse guide rails 105 along the longitudinal direction. The guide rail 102 slides back and forth, and the horizontal slider 107 is slidably connected to the horizontal guide rail 105. The robot arm 108 is fixedly connected to the horizontal slider 107, and a horizontal gear and rack transmission mechanism 106 is provided on the horizontal slider 107. The robot arm 108 can slide left and right along the horizontal guide rail 105 with the horizontal slider 107 under the drive of the horizontal gear and rack transmission mechanism 106. The longitudinal gear and rack transmission mechanism 103 and the horizontal gear and rack transmission mechanism 106 are both composed of a motor, a transmission gear and a transmission rack. The output shaft of the motor is connected to the transmission rack through the transmission gear and drives the slider to slide along the guide rail.

[0062] like Figure 5 As shown, the feeding device 9 consists of a feeding frame 901 and a feeding guide rail 902 fixedly connected above the feeding frame 901. The feeding guide rail 902 is horizontally distributed along the front-back direction.

[0063] like Figure 6As shown, the clamping mechanism 10 includes a slide plate 1001, a drive motor 1002, a rack 1003, and clamping clamps 1004. The slide plate 1001 is slidably connected to the upper part of the feeding guide rail 902. The rack 1003 is distributed along the front-back direction and is fixedly connected to the feeding frame 901. The drive motor 1002 is fixedly connected to the slide plate 1001, and the output shaft of the drive motor 1002 is connected to the rack 1004 through a gear. Two sets of clamping clamps 1004 are provided, both of which are fixedly connected to the slide plate 1001. The drive motor 1002 can drive the slide plate 1001 and the clamping clamps 1004 to slide along the length direction of the feeding guide rail 902.

[0064] like Figure 7 As shown, a set of side positioning mechanisms is fixedly connected to the front and rear sides of the clamping clamp 1004. The side positioning mechanism consists of a hydraulic cylinder 1005 and a positioning post 1006. The hydraulic cylinder 1005 is fixedly connected to the clamping clamp 1004. The piston rod axis of the hydraulic cylinder 1005 is distributed along the left and right direction, that is, perpendicular to the plate processing direction. The positioning post 1006 is fixed to the end of the piston rod of the hydraulic cylinder 1005. The hydraulic cylinder 1005 can drive the positioning post 1006 to extend and retract along the direction perpendicular to the plate processing direction, thereby performing side positioning of the plate. In addition, two sets of first position switches 1007 are also provided on the inner sides of the front and rear ends of the clamping clamp 1004 to monitor whether the side of the plate is close to the positioning post 1006. A connecting plate 1008 is fixedly connected to the outer side of the clamping clamp 1004. The clamping clamp 1004 is fixedly connected to the slide plate 1001 through the connecting plate 1008.

[0065] like Figure 8 and Figure 9 As shown, the end positioning device 11 consists of a positioning bracket 1101, a positioning cylinder 1102, and a positioning plate 1103. The cylinder body of the positioning cylinder 1102 is fixed to the positioning bracket 1101. The piston rod axis of the positioning cylinder 1102 is distributed in the vertical direction. The upper end of the piston rod is fixedly intercepted by the positioning plate 1103. Two sets of first guide columns 1105 are also provided between the positioning plate 1103 and the positioning bracket 1101. Both sets of first guide columns 1105 are telescopic structures that can be extended and retracted in the height direction and are symmetrically distributed on both sides of the positioning cylinder 1102. A second position switch 1104 is provided on the positioning plate 1103. The positioning cylinder 1102 drives the positioning plate 1103 to move up and down, thereby positioning the end of the plate in the front-back direction. The second position switch 1104 detects whether the plate is in position.

[0066] like Figures 10-16As shown, the adapter platform 12 includes a base 1201, a height adjustment mechanism, a lateral adjustment mechanism, and a plate fixing device. The height adjustment mechanism consists of a sliding seat 1202, a lifting cylinder 1203, and a second guide column 1204. The lifting cylinder 1203 has its axis distributed vertically, and its cylinder body is fixed to the sliding seat 1202. The upper end of the piston rod is connected to the plate fixing device, which can move the plate fixing device up and down through the height adjustment mechanism. The second guide column 1204 is distributed vertically, and two sets of second guide columns 1204 are symmetrically arranged on the left and right sides of the lifting cylinder 1203. The lateral adjustment mechanism includes a drive cylinder 1210, a third guide column 1211, and a mounting plate 1212. The mounting plate 1212 is fixedly connected to the top of the base 1201. The cylinder body of the drive cylinder 1210 is fixed to the mounting plate 1212, and the piston rod has its axis distributed horizontally, with its outer end connected to the sliding seat 1202. 02 Fixed connection, two sets of third guide columns 1211 are symmetrically arranged on the left and right sides of the drive cylinder 1210. The drive cylinder 1210 can drive the height adjustment mechanism to move left and right along the base 1201. The plate fixing device includes a movable frame 1205, multiple sets of fixed rods 1206 fixedly connected to the upper part of the movable frame, and fixed units fixedly connected to the fixed rods 1206. The fixed rods 1206 are distributed in the left and right direction, and multiple sets are arranged at intervals along the front and back direction of the movable frame 1205. Two sets of fixed units are fixedly connected to each set of fixed rods 1206. Each set of fixed units consists of a telescopic spring 1207, a magnet mounting frame 1208, and an electromagnet 1209. The upper and lower ends of the telescopic spring 1207 are fixedly connected to the fixed rod 1206 and the magnet mounting frame 1208, respectively. The electromagnet 1209 is fixedly connected to the upper part of the magnet mounting frame 1208 by bolts.

[0067] In the transfer platform 12, the lifting cylinder 1203 can drive the plate fixing device to move up and down, so that the plate fixing device can be in at least two states above and below the intermediate roller conveyor 5. When it is necessary to fix the plate above the intermediate roller conveyor 5, the lifting cylinder 1203 is activated, driving the plate fixing device to move upward to above the intermediate roller conveyor 5. Then the electromagnet 1209 is energized, and the plate is fixed by adsorbing the electromagnet 1209. In addition, the drive cylinder 1210 can drive the height adjustment device and the plate fixing device to move left and right, so as to reposition the side of the plate at the front end of the feed port of the second processing unit 6 to ensure the accurate position of the side of the plate in the width direction.

[0068] like Figure 17 and Figure 18As shown, a set of position detection mechanisms 13 is provided on each of the left and right sides of the intermediate roller conveyor 5 near the feed inlet of the second processing unit 6. Each position detection mechanism 13 includes a fixed base 1301, a column 1302, an adjusting cylinder 1303, a guide plate 1304, a switch bracket 1305, and a photoelectric switch 1306. The column 1302 is fixedly connected to the fixed base 1301. The cylinder body of the adjusting cylinder 1303 is fixedly connected to the column 1302. The piston rods are vertically distributed and their upper ends are fixedly connected to the guide plate 1304. The switch bracket 1305 is fixedly connected to... Above the guide plate 1304, the photoelectric switch 1306 is fixedly connected to the switch bracket 1305, and a slide rail 1308 is provided on the guide plate 1306, and a slide groove 1307 is provided on the column 1302. The guide plate 1306 and the column 1302 are slidably connected up and down through the slide groove 1307 and the slide rail 1308. The photoelectric switches 1306 on the two sets of position detection mechanisms 13 are used for photoelectric positioning to ensure the accurate position of the upper end of the plate in the front and rear directions. The two sets of photoelectric switches 1306 can be adjusted by the adjusting cylinder 1303 to keep the height consistent.

[0069] The principle of using this device for sheet metal processing is as follows:

[0070] In this embodiment, in order to optimize the board processing flow, the first processing unit 4 adopts a typing unit and the second processing unit 6 adopts a drilling unit.

[0071] First, the robotic arm 108 of the feeding mechanism 1 clamps the sheet material and places it on the gravity centering platform 2. The gravity centering platform 2 determines the end and side positioning reference. Then, the robotic arm 108 transports the sheet material to the feeding worktable 2. The side positioning mechanism on the front clamping mechanism 10 is activated, and the positioning column 1006 is in the extended state. The side of the sheet material is positioned by the positioning column 1006, and the end of the sheet material is positioned by the end positioning device 11. At the same time, the first position switch 1007 and the second position switch 1104 detect whether the sheet material is accurately positioned. If so, the clamping clamp 1004 is activated to clamp the sheet material. Next, the drive motor 1002 on the front clamping mechanism 10 is activated, causing the front clamping mechanism 10 and the sheet material to move backward along the feeding guide rail 902 until they reach the typing unit processing position. After typing is completed, the front clamping mechanism 10 continues to feed the sheet material to the position above the intermediate roller conveyor 5 and the transfer platform 12. Then, the lifting cylinder 1203 is activated, causing the moving frame 1205 and the electromagnet 1209 to move upward to the position above the intermediate roller conveyor 5. At the same time, the electromagnet 1209 is energized, the clamping clamp 1004 on the front clamping mechanism 10 releases the sheet material, the hydraulic cylinder 1005 is activated, causing the positioning column 1006 to retract, and the front clamping mechanism returns to the loading position. The initial position of the front end of the workbench 3; due to the compression of the extension spring 1207 by the weight of the sheet material itself, the lower surface of the sheet material contacts the upper end face of the intermediate roller conveyor 5, thereby ensuring uniform force distribution. After the electromagnet 1209 fixes the sheet material, the rear clamping mechanism 10 moves to the position of the transfer platform 12, and the hydraulic cylinder 1005 on the rear clamping mechanism 10 drives the positioning column 1006 to extend. The drive cylinder 1210 on the lateral adjustment mechanism moves, driving the height adjustment mechanism and the sheet fixing device to move left and right as a whole until the side of the sheet material is close to the positioning column 1006 on the rear clamping mechanism 10. The first position switch 1007 sends a signal, and then... The front clamping mechanism 10 clamps the sheet material; the rear clamping mechanism 10 clamps the sheet material and moves it backward. Through the photoelectric switches 1306 of two sets of position detection mechanisms 13, the accurate position of the end of the sheet material in the front and rear directions is ensured, thereby ensuring the edge distance processing accuracy of the sheet material entering the drilling unit; after the side repositioning and end positioning of the sheet material are completed, the rear clamping mechanism 10 drives the sheet material to continue moving backward and enter the drilling unit for drilling operation. After drilling is completed, the finished sheet material is conveyed to the unloading worktable 7 through the rear clamping mechanism 10, and then transported to the finished product box by the unloading mechanism 8. This cycle is repeated to realize the continuous processing of the sheet material.

[0072] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. An automatic board loading and unloading production line, characterized in that, It includes, from front to back, a feeding mechanism, a gravity centering platform, a feeding worktable, a first processing unit, an intermediate roller conveyor, a second processing unit, a discharging worktable, and a discharging mechanism, as well as: The feeding device is distributed along the front and back direction of the plate processing on the outside of the loading worktable, the first processing unit, the intermediate roller conveyor and the second processing unit. The feeding device is equipped with a clamping mechanism that slides along the front and back direction. There are two sets of clamping mechanisms, which are located on the front and back sides of the intermediate roller conveyor respectively. A side positioning device is fixedly connected to the inside of the clamping mechanism, and the length of the side positioning device is adjustable in the width direction of the plate. An end positioning device is installed at one end of the loading workbench near the first processing unit, and the height of the end positioning device is adjustable. The transfer platform is located below the intermediate roller conveyor and consists of a base, a height adjustment mechanism connected above the base, and a plate fixing device connected above the height adjustment mechanism. The height adjustment mechanism is used to drive the plate fixing device to extend a certain height above the intermediate roller conveyor and retract it to below the intermediate roller conveyor. A lateral adjustment mechanism is connected between the base and the height adjustment mechanism, and is used to drive the height adjustment mechanism and the plate fixing device to move along the width direction of the plate. The clamping mechanism is equipped with a first positioning switch and a second positioning switch on its inner side and the end positioning device on its upper side, respectively. A position detection mechanism for detecting the end position of the plate in the processing direction is provided on the outer side of the intermediate roller conveyor in front of the feed port of the second processing unit.

2. The automatic board loading and unloading production line according to claim 1, characterized in that, The feeding device includes a feeding frame and a feeding guide rail fixedly connected above the feeding frame. The lengths of the feeding guide rails are all horizontally distributed along the processing direction of the sheet material.

3. The automatic board loading and unloading production line according to claim 2, characterized in that, The clamping mechanism includes a sliding plate, a drive motor, a rack, and clamping clamps. The rack is fixedly connected to the feeding frame and its length is distributed along the processing direction of the sheet material. The sliding plate is slidably connected to the feeding guide rail. The output end of the drive motor is connected to the rack through gear meshing. The clamping clamps are fixedly connected to the sliding plate.

4. The automatic board loading and unloading production line according to claim 3, characterized in that, The side positioning device includes a hydraulic cylinder and a positioning column. The hydraulic cylinder is fixedly connected to the clamping clamp, and the piston rod axis of the hydraulic cylinder is distributed along the direction perpendicular to the length of the feeding guide rail. The positioning column is fixedly connected to the end of the piston rod of the hydraulic cylinder, and the first positioning switch is fixedly connected to the inside of the clamping clamp.

5. The automatic board loading and unloading production line according to claim 1, characterized in that, The end positioning device includes a positioning bracket, a positioning cylinder, and a positioning plate. The positioning bracket is located below the loading workbench. The piston rod of the positioning cylinder is vertically distributed and its upper end is fixedly connected to the positioning plate. It is used to drive the positioning plate to extend above the upper surface of the loading workbench and retract to below the upper surface of the loading workbench. The second positioning switch is fixedly connected to the side of the positioning plate near the loading workbench. A first guide post is vertically distributed between the positioning plate and the positioning bracket.

6. The automatic board loading and unloading production line according to claim 1, characterized in that, The height adjustment mechanism includes a sliding seat, a lifting cylinder, and a moving frame. The sliding seat is slidably connected to the top of the base along a direction perpendicular to the length of the feeding guide rail. The cylinder body of the lifting cylinder is fixedly connected to the sliding seat. The piston rod of the lifting cylinder is distributed in a vertical direction and its movable end is fixedly connected to the moving frame. A second guide column is provided between the moving frame and the sliding seat in a vertical direction.

7. The automatic board loading and unloading production line according to claim 1 or 6, characterized in that, The plate fixing device consists of multiple sets of fixing units spaced apart between the intermediate rollers. Each fixing unit consists of a fixing rod, a telescopic spring, an electromagnetic mounting frame, and an electromagnet. The fixing rod is fixedly connected above the height adjustment mechanism. The telescopic spring is distributed vertically and its upper and lower ends are fixedly connected to the electromagnetic mounting frame and the fixing rod, respectively. The electromagnet is fixedly connected above the electromagnetic mounting frame.

8. The automatic board loading and unloading production line according to claim 6, characterized in that, The lateral adjustment mechanism includes a drive cylinder, the cylinder body of which is fixedly connected to the base, one end of the piston rod of which is fixedly connected to the sliding seat, and a third guide column is provided between the base and the sliding seat.

9. The automatic board loading and unloading production line according to claim 1, characterized in that, The position detection mechanism is provided in two sets and symmetrically arranged on the outer side of the middle roller conveyor near the second processing unit. The position detection mechanism includes a fixed base, a column fixedly connected to the fixed base, an adjusting cylinder, a slide plate, a switch bracket, and a photoelectric switch. The cylinder body of the adjusting cylinder is fixedly connected to the column, the piston rod of the adjusting cylinder is vertically distributed and its upper end is fixedly connected to the slide plate, the switch bracket is fixedly connected to the slide plate, and the photoelectric switch is fixedly connected to the switch bracket.

10. The automatic board loading and unloading production line according to claim 1, characterized in that, Both the loading and unloading mechanisms consist of a truss, a longitudinal guide rail mounted on the truss, a transverse guide rail slidably connected above the longitudinal guide rail, and a robotic arm slidably connected to the transverse guide rail.

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