Automatic feeding and positioning device for large plates

Abstract

The invention discloses an automatic feeding and positioning device for large plates, which comprises a rack mechanism, a driving mechanism, a clamping mechanism and a positioning mechanism, the driving mechanism comprises a first mounting bracket, a second mounting bracket and a driving device mounted on the second mounting bracket, the first mounting bracket is provided with a guide pillar mounting plate, and the guide pillar mounting plate is provided with a guide pillar; a guide pillar is arranged on the second mounting support, one end of the guide pillar penetrates through the guide pillar mounting plate to be arranged in the first mounting support, a stop plate is arranged at the end, penetrating through the guide pillar mounting plate, of the guide pillar, and a first elastic piece is arranged between the second mounting support and the guide pillar mounting plate. And a second elastic piece is arranged on the guide pillar between the stop plate and the guide pillar mounting plate. Through the structural design of the device, the defects of low machining and positioning efficiency and unstable quality are overcome, and the production efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of large plate processing, in particular to an automatic feeding and positioning device for large plates. BACKGROUND

[0002] Currently, the plate size and groove size used by special tanks are various, and the traditional feeding and positioning method is as follows: the plate is hoisted to the workbench by a crane, the workbench is usually a fixed roller frame, the plate is manually pushed to the approximate position, and then the plate is positioned to the appropriate position by a positioning tool, so that the plate to be processed edge and the equipment platform vertical edge are kept relatively parallel, and the other three edges of the plate are fed and positioned in the same way. The production efficiency of this feeding and positioning method is low, the labor intensity is large, and the parallelism of the plate edges completely depends on the previous plate cutting process, which leads to unstable diagonal size of the plate and affects the subsequent welding process. SUMMARY

[0003] The present application provides an automatic feeding and positioning device for large plates with high processing and positioning efficiency and stable quality.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows: an automatic feeding and positioning device for large plates, comprising a rack mechanism, a pushing and pulling mechanism installed on one side of the rack mechanism, and a positioning mechanism installed on the other side of the rack mechanism, the pushing and pulling mechanism comprising a driving mechanism and a clamping mechanism, the driving mechanism being installed on the rack mechanism and being movable along the rack mechanism, the clamping mechanism being installed on the driving mechanism; the driving mechanism comprising a first mounting bracket, a second mounting bracket, and a driving device installed on the second mounting bracket, the first mounting bracket being provided with a guide column mounting plate, the second mounting bracket being provided with a guide column, one end of the guide column being arranged in the first mounting bracket through the guide column mounting plate, the end of the guide column passing through the guide column mounting plate being provided with a stop plate, a first elastic member being arranged between the second mounting bracket and the guide column mounting plate, a second elastic member being arranged on the guide column between the stop plate and the guide column mounting plate; the first mounting bracket and the second mounting bracket are both provided with a first sliding block, the rack mechanism is provided with a first guide rail, and the first sliding block cooperates with the first guide rail.

[0005] As a further improvement of the present application, the clamping mechanism comprises a clamping mounting bracket, a first pressing block, a second pressing block, and a first hydraulic cylinder, the first pressing block being installed on the clamping mounting bracket, the first hydraulic cylinder being installed on the clamping mounting bracket and opposite to the first pressing block, the second pressing block being installed on the extension end of the first hydraulic cylinder and cooperating with the first pressing block to clamp the plate.

[0006] As a further improvement of the present invention, a second guide rail is provided on the clamping mounting bracket, a second slider is provided on the first mounting bracket, and the second guide rail is cooperatively connected to the second slider; a nitrogen spring is provided along the second guide rail between the first mounting bracket and the clamping mounting bracket, and both ends of the nitrogen spring are respectively installed on the first mounting bracket and the clamping mounting bracket.

[0007] As a further improvement of the present invention, a first proximity switch and a second proximity switch are provided in the first mounting bracket, a first positioning device is provided on the second mounting bracket, a second positioning device is provided on the stop plate, the first proximity switch cooperates with the first positioning device, and the second proximity switch cooperates with the second positioning device.

[0008] As a further improvement of the present invention, the material rack mechanism includes a column, a material rack provided with an opening on the column, a roller rack adjustable up and down in the material rack, and a lifting mechanism for adjusting the roller rack.

[0009] As a further improvement of the present invention, the lifting mechanism includes a second hydraulic cylinder, an active arm and a driven arm. The middle part of the active arm is rotatably installed at the bottom of the material rack and the two ends are respectively connected to the hydraulic cylinder and the roller frame. The driven arm is rotatably installed at the bottom of the material rack and connected to the roller frame.

[0010] As a further improvement of the present invention, the positioning mechanism includes a positioning mounting plate arranged on the material rack, a rotating shaft and a cylinder arranged on the positioning mounting plate, and a rotatable positioning rod arranged on the rotating shaft, and the protruding end of the cylinder is connected to the positioning rod.

[0011] As a further improvement of the present invention, a third slider is provided on the positioning mounting plate, a third guide rail is provided on the material rack, and the third slider cooperates with the third guide rail.

[0012] As a further improvement of the present invention, the driving device includes a driving motor, a reducer connected to the driving motor, and a driving gear arranged on the reducer. The material rack is provided with a driving rack, and the driving gear cooperates with the driving rack.

[0013] The processing steps of the automatic feeding and positioning device for large plates as described above are as follows: S1: The plate is placed on the rack mechanism, the positioning mechanism is in the retracted state, and the push-pull mechanism is located at the starting end of the rack mechanism; S2: The pulling mechanism is started and pushes the plate toward the processing equipment until the plate contacts the limit plate on the processing equipment, and the first elastic member is compressed to perform the first positioning. After positioning, the pulling mechanism is pushed to stop moving; S3: Fix the plate on the processing equipment, retract the limit plate, push the pull-back mechanism back to its original position, and the processing equipment completes the processing of the plate edge; S4: the processed edge of the plate is manually placed on the clamping mechanism; S5: the clamping mechanism is started and clamps the plate, the driving mechanism drives the clamping mechanism to move towards the positioning mechanism until the plate contacts the positioning mechanism, and the second elastic member is compressed for repositioning, and the driving mechanism stops moving after repositioning; S6: the driving mechanism moves towards the processing equipment until the second elastic member is reset, and the clamping mechanism is opened at the same time; S7: the advancing and pulling back mechanism pushes the plate towards the processing area, fixes the plate at a suitable position, and completes the edge processing.

[0014] Through the above technical scheme, the present application has the following technical effects: (1) by arranging the first elastic member and the second elastic member on both sides of the guide column mounting plate, when processing the first edge of the plate, the plate will continuously receive the pushing force of the first elastic member to maintain the positioning size of the plate; (2) the positioning mechanism is used to position the first edge, and then the advancing and pulling back mechanism is used to complete the edge processing, which ensures the parallelism of the two edges and realizes semi-automatic processing and improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a front view of the present application; Figure 3 is a side view of the present application; Figure 4 is a schematic diagram of the structure of the advancing and pulling back mechanism Figure 5 is a schematic diagram of the structure of the positioning mechanism; Figure 6 is a schematic diagram of the overall structure of the present application; Figure 7 is a schematic diagram of the overall structure of the present application; The marks of the components in the drawings are as follows: 1, rack mechanism; 11, column; 12, rack; 121, first guide rail; 122, third guide rail; 123, driving rack; 13, roller frame; 14, lifting mechanism; 141, second hydraulic cylinder; 142, driving arm; 143, driven arm; 2, pushing and pulling mechanism; 21, driving mechanism; 211, first mounting bracket; 2111, second slider; 2112, first proximity switch; 2113, second proximity switch; 212, second mounting bracket; 2121, first homing device; 213, driving device; 2131, driving motor; 2132, speed reducer; 2133, driving gear; 214, guide column; 215, guide column mounting plate; 216, stop plate; 2161, second homing device; 217, first elastic member; 218, second elastic member; 219, first slider; 22, clamping mechanism; 221, clamping mounting bracket; 222, first pressing block; 223, second pressing block; 224, first hydraulic cylinder; 225, second guide rail; 23, nitrogen spring; 3, positioning mechanism; 31, positioning mounting plate; 32, rotating shaft; 33, air cylinder; 34, positioning rod; 35, third slider; 36, positioning block; 4, auxiliary roller. DETAILED DESCRIPTION

[0016] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The above-described is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0018] An automatic feeding and positioning device for large plates, comprising a rack mechanism, a pushing and pulling mechanism, a clamping mechanism, a positioning mechanism and an auxiliary roller. Figures 1-7As shown, it comprises a rack mechanism 1, a pushing and pulling mechanism 2 installed on one side of the rack mechanism 1, and a positioning mechanism 3 installed on the other side of the rack mechanism 1, the pushing and pulling mechanism 2 comprises a driving mechanism 21 and a clamping mechanism 22, the driving mechanism 21 is installed on the rack mechanism 1 and can move along the rack mechanism 1, and the clamping mechanism 22 is installed on the driving mechanism 21. In this embodiment, the racks 12 are two in a group, the pushing and pulling mechanism pushes the plate on the rack mechanism 1 to the processing equipment, and the pushing and pulling mechanism 2 stops working when the plate contacts the limiting plate on the processing equipment, the processing equipment fixes the plate, and then processes the first edge, manually positions the processed edge, places it on the rack 12, and then the clamping mechanism 22 clamps the plate, the driving mechanism 21 pulls back to the positioning mechanism 3 until the plate contacts the positioning mechanism 3, the driving mechanism 21 completes positioning, stops working and resets, and then pushes the positioned plate to the processing equipment to complete the edge processing.

[0019] The driving mechanism 21 comprises a first mounting bracket 211 which is hollow and has an opening, a second mounting bracket 212 which is composed of two plates vertically connected, and a driving device 213 installed on the second mounting bracket 212, the first mounting bracket 211 is provided with a guide column mounting plate 215 which is welded on the side close to the second mounting plate, the second mounting bracket 212 is provided with two guide columns 214 on the side close to the first mounting bracket 211, one end of the guide column 214 passes through the guide column mounting plate 215 and is arranged in the first mounting bracket 211, the end of the guide column 214 passing through the guide column mounting plate 215 is provided with a stop plate 216, a first elastic member 217 is arranged between the second mounting bracket 212 and the guide column mounting plate 215, and a second elastic member 218 is arranged between the stop plate 216 and the guide column mounting plate 215, both the first elastic member 217 and the second elastic member 218 are rectangular springs; the side of the first mounting bracket 211 and the second mounting bracket 212 close to the rack mechanism 1 is provided with two first sliding blocks 219, and the side of the rack mechanism 1 close to the pushing and pulling mechanism 2 is provided with two first guide rails 121, the first sliding block 219 cooperates with the first guide rail 121 to move the pushing and pulling mechanism 2 along the rack mechanism 1. In this embodiment, in order to further ensure the positioning size, when the edge of the plate to be processed contacts the positioning device on the processing equipment and completes positioning, the first elastic member 217 in the driving mechanism 21 will be compressed, the plate will continuously receive the pushing force of the first elastic member 217, the positioning size of the plate during processing is maintained, and the driving mechanism 21 is pulled back after the plate is fixed by the processing equipment; when the plate contacts the positioning mechanism 3, the second elastic member 218 will also be compressed to maintain the continuous pushing force, at this time the driving mechanism 21 stops pulling back to prevent the driving mechanism 21 from moving too far and damaging the positioning mechanism 3.

[0020] The clamping mechanism 22 comprises a clamping mounting bracket 221, a first pressing block 222, a second pressing block 223 and a first hydraulic cylinder 224. The clamping mounting bracket 221 is composed of a vertical plate and two horizontal plates extending to the same side at both ends of the vertical plate. The first pressing block 222 is fixedly installed at the inner side of the horizontal plate at the top end of the clamping mounting bracket 221. The first hydraulic cylinder 224 is installed at the outer side of the bottom end of the clamping mounting bracket 221 and the extending end thereof is opposite to the first pressing block 222 through the horizontal plate at the bottom end. The second pressing block 223 is installed at the extending end of the first hydraulic cylinder 224 and cooperates with the first pressing block 222 to clamp the plate. In this embodiment, the plate is between the first pressing block 222 and the second pressing block 223 during the process of pushing and pulling back the plate. The driving mechanism 21 drives the clamping mechanism 22 to move. In order to prevent the plate from directly contacting the clamping mounting bracket 221 and causing damage, a bumper is arranged at the inner side of the vertical plate between the two horizontal plates of the clamping mounting bracket 221. The bumper can be made of flexible material or rigid material due to the buffering effect of the first elastic member 217 and the second elastic member 218. The plate can be directly pulled back to the appropriate position for positioning and ensuring the positioning accuracy through the clamping action of the first pressing block 222 and the second pressing block 223 driven by the first hydraulic cylinder 224. In addition, in order to keep the stress uniform during clamping and prevent damage to the frame of the clamping mechanism 22 due to long-term use, the first pressing block 222 and the second pressing block 223 are both universal structures. The interiors of the first pressing block 222 and the second pressing block 223 are spherical surfaces (not shown in the figure). The first pressing block 222 and the second pressing block 223 are limited by the set screws to realize rotation.

[0021] In order to ensure that the plate is kept horizontally moving on the rack mechanism 1, the vertical plate of the clamping mounting bracket 221 is provided with a second guide rail 225 near the side of the first mounting bracket 211, the first mounting bracket 211 is provided with a second sliding block 2111 near the side of the clamping mounting bracket 221, the second guide rail 225 cooperates with the second sliding block 2111 to make the clamping mounting bracket 221 move in the vertical direction of the first mounting bracket 211, a nitrogen spring 23 is arranged between the first mounting bracket 211 and the clamping mounting bracket 221 along the second guide rail 225, the nitrogen spring 23 is arranged along the guide rail direction, the bottom end of the nitrogen spring 23 is mounted on the first mounting bracket 211, and the top end is mounted on the clamping mounting bracket 221. In the embodiment, when the first hydraulic cylinder 224 drives the second pressing block 223 to clamp the plate close to the first pressing block 222, when the height of the second pressing block 223 is higher than the height of the rack 12, the clamping mechanism 22 is driven by the gravity of the plate to make the nitrogen spring 23 contract until the plate is pressed on the rack 12, the nitrogen spring 23 stops contracting, at this time, the upper surface of the second pressing block 223 is flush with the upper surface of the rack 12; at the same time, the positions of the second guide rail 225 and the second sliding block 2111 on the first mounting bracket 211 and the clamping mounting bracket 221 can be arbitrarily exchanged, so that the clamping mounting bracket 221 can move in the vertical direction of the first mounting bracket 211, and here it is not described in detail.

[0022] As another embodiment, the installation positions of the first hydraulic cylinder 224 and the first pressing block 222 can be exchanged, the second pressing block 223 is mounted on the extension end of the first hydraulic cylinder 224, the upper surface of the first pressing block 222 is flush with the upper surface of the rack 12, at this time, the clamping mounting bracket 221 can be directly fixedly connected with the first mounting bracket 211, and only the first hydraulic cylinder 224 is driven to complete clamping.

[0023] The first installation support 211 is provided with a first proximity switch 2112 and a second proximity switch 2113 near one end of the second installation support 212, the second installation support 212 is provided with a first positioning device 2121, the stop plate 216 is provided with a second positioning device 2161, the first proximity switch 2112 cooperates with the first positioning device 2121, and the second proximity switch 2113 cooperates with the second positioning device 2161. In the embodiment, when the advancing and retracting mechanism 2 pushes the plate to the processing equipment for positioning, the first proximity switch 2112 is compressed by the first elastic member 217 to approach the first positioning device 2121 until contact, and the driving device 213 stops running after contact, and at this time, the plate is fixed by cooperation of the advancing and retracting mechanism 2 and the processing equipment; when the advancing and retracting mechanism 2 clamps the plate to retract for the second time, the second proximity switch 2113 is compressed by the second elastic member 218 to approach the second positioning device 2161 until contact, and the driving device 213 stops running after contact, and the second positioning of the plate is completed.

[0024] The rack mechanism 1 comprises a height-adjustable column 11, a rack 12 provided with an opening on the column 11, a roller frame 13 which is up and down adjustable in the rack 12, and a lifting mechanism 14 for adjusting the roller frame 13; the lifting mechanism 14 comprises a second hydraulic cylinder 141, a driving arm 142 and a driven arm 143, the middle part of the driving arm 142 is rotatably installed at the bottom of the rack 12 and the two ends thereof are connected with the hydraulic cylinder and the roller frame 13 respectively, and the driven arm 143 is rotatably installed at the bottom of the rack 12 and connected with the roller frame 13. In the embodiment, the bottom of the rack 12 is provided with a hydraulic cylinder mounting seat, a driving arm 142 mounting seat and a driven arm 143 mounting seat, the second hydraulic cylinder 141 is installed on the hydraulic cylinder mounting seat, the middle part of the driving arm 142 is rotatably installed on the driving arm 142 mounting seat, and the driven arm 143 is installed on the driven arm 143 mounting seat, the driving arm 142, the driven arm 143 and the roller frame 13 form a four-link system, the roller frame 13 can be lifted or lowered by the lifting mechanism 14, and the roller frame 13 is lifted to be higher than the upper surface of the rack 12 during advancing and retracting, so that the plate only contacts with the rollers, and the frictional force during advancing and retracting is reduced; during plate processing, the roller frame 13 is retracted to be lower than the upper surface of the rack 12, and the pressure of the plate acts on the rack 12, so that the service life of the roller frame 13 is prolonged, and in order to preliminarily and rapidly position the two edges of the plate in one direction, an auxiliary roller 4 is further arranged on one side of the outermost rack 12, and the plate is rapidly positioned by cooperation of the processed edge and the auxiliary roller 4.

[0025] The positioning mechanism 3 comprises a positioning mounting plate 31 arranged on the rack 12, a rotating shaft 32 and a pneumatic cylinder 33 arranged on the side of the positioning mounting plate 31 away from the rack 12, and a positioning rod 34 rotatably arranged on the rotating shaft 32, and the extending end of the pneumatic cylinder 33 is connected to the positioning rod 34. In the embodiment, the positioning rod 34 is in the shape of L, one end of the positioning rod 34 is connected to the rotating shaft 32, and a connecting end is arranged on the end of the positioning rod 34 away from the rotating shaft 32 and extending away from the side of the rack 12, and the extending end of the pneumatic cylinder 33 is connected to the connecting end. Through the extension and retraction of the pneumatic cylinder 33, the height of the positioning rod 34 can be adjusted by rotating the positioning rod 34 along the rotating shaft 32, so as to facilitate the feeding and discharging of the board. Meanwhile, a positioning block 36 made of rigid material is arranged on the end of the positioning rod 34 away from the rotating shaft 32, the positioning block 36 is in the shape of C, a protruding rib is arranged in the positioning block 36, a groove is arranged on the positioning rod 34 and can be matched with the rib, the positioning block 36 can be quickly replaced through the rib and the groove, and the positioning size can be finely adjusted. The positioning block 36 has three different thicknesses and is placed beside the positioning mechanism 3. Through the positioning block 36, the damage of the board to the positioning mechanism 3 can be prevented when the board contacts the positioning mechanism 3.

[0026] The third sliding block 35 is arranged on the side of the positioning mounting plate 31 close to the rack 12, the third guide rail 122 is arranged on the side of the rack 12 close to the positioning mechanism 3, and the third sliding block 35 and the third guide rail 122 are matched to move the positioning mechanism 3 along the rack 12. In the embodiment, the third guide rail 122 and the third sliding block 35 are arranged to adapt to different sizes of the board.

[0027] The driving device 213 comprises a driving motor 2131, a speed reducer 2132 connected to the driving motor 2131, and a driving gear 2133 arranged on the speed reducer 2132. The rack 12 is provided with a driving rack 123, the driving rack 123 is arranged along the first sliding rail, and the driving gear 2133 is matched with the driving rack 123 to move the driving mechanism 21 on the rack 12.

[0028] The specific working steps of the present application are as follows: S1: horizontally placing the board on the rack 12, at this time, the roller frame 13 and the positioning mechanism 3 are in the retracted state, and the advancing and retracting mechanism 2 is at the starting end of the rack 12 to facilitate the hoisting of the board, and the height of the second pressing block 223 is slightly lower than the upper surface of the rack 12; S2: the roller frame 13 is lifted by the lifting mechanism 14, the plate is above the rack 12, and the plate only contacts the roller, reducing the frictional resistance during movement; a positioning plate is arranged on the connected processing equipment to perform the first positioning of the plate, the first pressing block 222 and the second pressing block 223 do not contact the plate at this time, the advancing and pulling back mechanism pushes the plate to move on the roller frame 13 to the processing equipment, until the plate contacts the limiting plate on the processing equipment, the first elastic element 217 in the advancing and pulling back mechanism 2 is compressed, until the first proximity switch 2112 is triggered, the advancing and pulling back mechanism 2 stops working, at this time the plate will be subjected to a continuous pushing force, ensuring the positioning size of the plate; S3: the plate is fixed on the processing equipment, and the limiting plate is retracted, the advancing and pulling back mechanism 2 is reset, and the processing equipment completes the processing of the edge of the plate; during processing, the roller frame 13 is in a recycling state; S4: the first edge of the processed plate is positioned by manual and abuts against the anti-collision block on the clamping mechanism 22, ensuring the parallelism of the two edges after processing; S5: the clamping mechanism 22 is started and clamps the plate, the roller frame 13 is lifted higher than the rack 12, the driving mechanism 21 drives the clamping mechanism 22 to move to the positioning mechanism 3 until the plate contacts the positioning mechanism 3 and compresses the second elastic element 218, and then the driving motor 2131 stops moving to complete the repositioning after the second proximity switch 2113 is triggered; S6: the driving motor 2131 slowly moves to the processing equipment until the second elastic element 218 is reset, and the clamping mechanism is also opened; S7: the advancing and pulling back mechanism 2 pushes the plate to the processing area of the processing equipment again until the plate is sent to the appropriate position to complete the processing, at this time the positioning plate of the equipment is not started, and the advancing and pulling back mechanism 2 controls the running distance.

[0029] The processing of the other two edges of the plate can repeat the above actions, when the length-width ratio of the plate is large, two of the racks 12 can be lengthened to realize the processing of a larger size plate.

[0030] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent flow transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An automatic feeding and positioning device for large plates, characterized in that: The invention comprises a material rack mechanism (1), a push-pull-back mechanism (2) installed on one side of the material rack mechanism (1), and a positioning mechanism (3) installed on the other side of the material rack mechanism (1), wherein the push-pull-back mechanism (2) comprises a driving mechanism (21) and a clamping mechanism (22), wherein the driving mechanism (21) is installed on the material rack mechanism (1) and can move along the material rack mechanism (1), and the clamping mechanism (22) is installed on the driving mechanism (21); the driving mechanism (21) comprises a first mounting bracket (211), a second mounting bracket (212), and a driving device (213) installed on the second mounting bracket (212), wherein the first mounting bracket (211) is provided with a guide column mounting plate (215), and the second mounting bracket (212) is provided with a guide column mounting plate (216). A guide post (214) is provided, one end of the guide post (214) passes through a guide post mounting plate (215) and is arranged in a first mounting bracket (211); a stop plate (216) is provided at one end of the guide post (214) passing through the guide post mounting plate (215); a first elastic member (217) is provided between the second mounting bracket (212) and the guide post mounting plate (215); a second elastic member (218) is provided on the guide post (214) between the stop plate (216) and the guide post mounting plate (215); a first slider (219) is provided on both the first mounting bracket (211) and the second mounting bracket (212); a first guide rail (121) is provided on the material rack mechanism (1); and the first slider (219) cooperates with the first guide rail (121).

2. The automatic feeding and positioning device for large plates according to claim 1, characterized in that: The clamping mechanism (22) comprises a clamping mounting bracket (221), a first pressure block (222), a second pressure block (223) and a first hydraulic cylinder (224), wherein the first pressure block (222) is mounted on the clamping mounting bracket (221), the first hydraulic cylinder (224) is mounted on the clamping mounting bracket (221) and is opposite to the first pressure block (222), and the second pressure block (223) is mounted on the protruding end of the first hydraulic cylinder (224) and cooperates with the first pressure block (222) to clamp the plate.

3. The automatic feeding and positioning device for large plates according to claim 2, characterized in that: A second guide rail (225) is provided on the clamping mounting bracket (221), a second slider (2111) is provided on the first mounting bracket (211), and the second guide rail (225) is cooperatively connected to the second slider (2111); a nitrogen spring (23) is provided between the first mounting bracket (211) and the clamping mounting bracket (221) along the second guide rail (225), and two ends of the nitrogen spring (23) are respectively mounted on the first mounting bracket (211) and the clamping mounting bracket (221).

4. The automatic feeding and positioning device for large plates according to claim 1, characterized in that: A first proximity switch (2112) and a second proximity switch (2113) are provided in the first mounting bracket (211), a first positioning device (2121) is provided on the second mounting bracket (212), and a second positioning device (2161) is provided on the stop plate (216). The first proximity switch (2112) cooperates with the first positioning device (2121), and the second proximity switch (2113) cooperates with the second positioning device (2161).

5. The automatic feeding and positioning device for large plates according to claim 1, characterized in that: The material rack mechanism (1) comprises a column (11), a material rack (12) provided with an opening on the column (11), a roller rack (13) adjustable up and down in the material rack (12), and a lifting mechanism (14) for adjusting the roller rack (13).

6. The automatic feeding and positioning device for large plates according to claim 5, characterized in that: The lifting mechanism (14) includes a second hydraulic cylinder (141), an active arm (142) and a driven arm (143). The middle portion of the active arm (142) is rotatably mounted on the bottom of the material rack (12) and the two ends are respectively connected to the hydraulic cylinder and the roller rack (13). The driven arm (143) is rotatably mounted on the bottom of the material rack (12) and is connected to the roller rack (13).

7. The automatic feeding and positioning device for large plates according to claim 1, characterized in that: The positioning mechanism (3) comprises a positioning mounting plate (31) provided on the material rack mechanism (1), a rotating shaft (32) and a cylinder (33) provided on the positioning mounting plate (31), and a rotatable positioning rod (34) provided on the rotating shaft (32), wherein the protruding end of the cylinder (33) is connected to the positioning rod (34).

8. The automatic feeding and positioning device for large plates according to claim 7, characterized in that: A third slider (35) is provided on the positioning mounting plate (31), a third guide rail (122) is provided on the material rack mechanism (1), and the third slider (35) cooperates with the third guide rail (122).

9. The automatic feeding and positioning device for large plates according to claim 1, characterized in that: The driving device (213) comprises a driving motor (2131), a reducer (2132) connected to the driving motor (2131), and a driving gear (2133) provided on the reducer (2132); a driving rack (123) is provided on the material rack mechanism (1); and the driving gear (2133) cooperates with the driving rack (123).

10. A processing step of the automatic feeding and positioning device for large plates according to any one of claims 1 to 9, characterized in that: The steps are as follows: S1: The plate is placed on the rack mechanism (1), the positioning mechanism (3) is in the retracted state, and the push-pull mechanism (2) is located at the starting end of the rack mechanism (1); S2: the pulling mechanism is started and the plate is pushed toward the processing equipment until the plate contacts the limit plate on the processing equipment, and the first elastic member (217) is compressed to perform the first positioning, and after positioning, the pulling mechanism is pushed to stop moving; S3: Fix the plate on the processing equipment, retract the limit plate, push the pull-back mechanism (2) to reset, and the processing equipment completes the processing of the plate edge; S4: manually pressing the processed edge of the plate against the clamping mechanism (22); S5: The clamping mechanism (22) starts and clamps the plate, and the driving mechanism (21) drives the clamping mechanism (22) to move toward the positioning mechanism (3) until the plate contacts the positioning mechanism (3), and compresses the second elastic member (218) to re-position the plate. After re-positioning, the driving mechanism (21) stops moving; S6: the driving mechanism (21) moves toward the processing equipment until the second elastic member (218) is reset, and the clamping mechanism opens; S7: The push-pull mechanism (2) pushes the plate toward the processing area, sends it to a suitable position to fix the plate, and completes the edge processing.

Images