A sheet positioning device, a material holding mechanism, a machining center and a machining method

Abstract

The present invention discloses a plate positioning device, a material holding mechanism, a plate processing center and a processing method, including a plate positioning device for vertically positioning a plate, a material tank of the plate processing center, a rotating mechanism, a first driving mechanism for carrying the rotating mechanism to move in the Y and Z axis directions relative to the machine tool, a processing head, a workbench, and a second driving mechanism for driving the processing head to move; the rotating mechanism includes a manipulator, and after the first driving mechanism drives the manipulator of the rotating mechanism to position the plate to be processed perpendicular to the machine tool, the plate is then placed on the workbench. The vertically established plate positioning device enables the plate to be positioned in the vertical direction, effectively reducing the area occupied by the positioning device on the processing center and improving the overall production efficiency of the machine.

Description

Technical Field

[0001] The present invention relates to the field of automatic loading and unloading of sheet processing, and particularly to a sheet positioning device, a material holding mechanism, a machining center and a machining method. Background Art

[0002] In the processing of glass sheets in the 3C industry (Computer, Communication, and Consumer Electronic), numerically controlled machine tools are generally used for grinding and milling forming. Before processing the sheet workpiece by the numerically controlled machine tool, the blank must be accurately positioned to ensure the processing accuracy.

[0003] In the field of sheet processing, the workpiece blank is generally transported from the material tank to the fixture by a manipulator or manually. After positioning and clamping the workpiece with the fixture, the processing starts. For example, Chinese Patent ZL201620545086.0 and Chinese Patent ZL201810004889.9.

[0004] ZL201620545086.0 discloses a processing positioning device, including a V-shaped pushing mechanism for horizontally pushing the sheet, a V-shaped fixing mechanism for blocking the horizontal movement of the sheet, and a processing platform. The V-shaped pushing mechanism is located outside the processing platform, and the V-shaped fixing mechanism is located on the diagonal side of the V-shaped pushing mechanism relative to the processing platform. An adsorption groove is provided on the processing platform. The V-shaped pushing mechanism includes a first stopper, a second stopper, a first guide rod cylinder, and a dust cover. The first stopper and the second stopper form a V-shaped structure. The V-shaped structure can move horizontally driven by the cylinder, thereby pushing the sheet to move along the diagonal of the processing platform. When the sheet is pushed to the V-shaped fixing mechanism, the pushing stops, the sheet is clamped, and the air extraction device is started. The air extraction device is connected to the adsorption groove through a pipeline, and the sheet is adsorbed on the processing platform and finally accurately fixed.

[0005] ZL201810004889.9 discloses a flexible positioning fixture. The front and rear driving devices and the left and right driving devices of the flexible positioning fixture can be independently driven, and the driving devices and the guiding devices are both arranged in the bottom frame of the workbench. The positioning fixture can form one or more positioning stations as needed to position workpieces of different sizes and quantities.

[0006] The above-mentioned prior art and common general knowledge all revolve around solving the problems of positioning and clamping of sheet workpieces. The basic technical route for solving such problems is also to continuously combine, decompose, and sort the positioning, clamping, and transportation of blank workpieces in different ways to obtain better efficiency, space, protection, and cost. Therefore, for the designers of machine tools, they must consider maximizing the utilization rate of the machine tool in the planar direction. Especially on the workbench, make full use of the planar dimensions as much as possible, load sheet materials with corresponding dimensions, and reduce the occupation of the workbench by the fixture positioning mechanism. However, the positioning devices or fixtures disclosed in the above-mentioned prior art all set the fixtures / positioning devices on or around the workbench, occupying the usage area of the workbench.

[0007] To solve the above problems, Chinese Patent ZL201710980003.X discloses an integrated numerical control processing device. Its positioning platform is set on the workbench surface of the numerical control equipment rack and is close to the rotary loading and unloading mechanism. The multi-axis motion robot is set above the workbench surface; the grasping mechanism is connected to the multi-axis motion robot and is used to transfer the sheet to be processed in the rotary loading and unloading mechanism to the positioning platform under the drive of the multi-axis motion robot, transfer the sheet to be processed positioned on the positioning platform to the numerical control machine tool, and transfer the formed sheet processed by the numerical control processing machine tool to the rotary loading and unloading mechanism.

[0008] The "Machine Tool Design Manual" and the "Machine Tool Fixture Design Manual" disclose that the blank workpiece is first positioned and installed on a quick-change pallet, and then the quick-change pallet is quickly installed on the positioning fixture of the machine tool workbench to improve the loading and unloading clamping efficiency at the machine tool end and reduce the downtime of the machine tool caused by clamping workpieces. In addition, for some blank parts, they are directly positioned in the material trough, and the manipulator transfers the blanks in the material trough and loads them onto the fixture on the workbench.

[0009] The above-mentioned Chinese patent positions the sheet to be processed outside the workbench, solving the problem of occupying the space dimensions of the workbench, but a planar space dimension adapted to it is still required outside the workbench. Therefore, the overall planar space dimension has not been reduced, but instead, the space occupation within the planar range has increased. And designing the positioning mechanism in the material trough requires complete integration with the material trough, imposing too many restrictions on the material trough, making the structure of the material trough complex, or requiring higher precision of the material trough, with poor economy and operability.

[0010] In addition, in the case of loading and unloading by the loading and unloading device, the sheet is transported from the material tank to the fixture for positioning, which will inevitably cause a change in the position of the sheet. When the processed sheet is retrieved from the workbench after processing, the processed sheet with the changed position either adjusts the loading and unloading device to put the processed sheet back into the material tank, or adjusts the position of the material tank to adapt to this change. In the application of the cantilever manipulator loading and unloading device, the position adaptation is achieved by adjusting the material tank. However, the material tanks in the prior art are all realized by independent driving mechanisms, with complex structures and high costs.

[0011] Based on the above prior art, the following problems still need to be solved.

[0012] 1. When the positioning device is not installed on the workbench, how to minimize the occupation of the horizontal area by the positioning device to a greater extent;

[0013] 2. How to make the positioning more accurate and reliable, and not generate a large mechanical force to clamp and break the ultra-thin sheet such as glass during positioning;

[0014] 3. For the displacement change of the sheet after passing through the positioning process from the material tank, how to make the adjustment of the position of the material tank simpler, more economical and effective;

[0015] 4. How to arrange the transfer paths of the workbench, positioning device, material tank and loading and unloading device in the machining center to be shorter, the space to be more compact, and the downtime for loading and unloading of the machine tool to be shorter. Summary of the Invention

[0016] The technical problem solved by the present invention is to provide a sheet positioning fixture, a storage mechanism, a machining center and a machining method to solve the above problems.

[0017] To achieve the above object, the present invention discloses a sheet positioning device, characterized in that: the positioning device is used for positioning the sheet to be processed in a sheet machining center before processing; the positioning device is of an upright structure and is vertically arranged on the machine tool of the sheet machining center, and the positioning device positions the sheet to be processed perpendicular to the machine tool.

[0018] Preferably, the sheet machining center further includes a material tank and a workbench, and the positioning device is located adjacent to the rear of the material tank and between the material tank and the workbench.

[0019] Setting the positioning device adjacent to the rear of the material tank and vertically, so that the sheet is positioned in the direction perpendicular to the machine tool, effectively reduces the occupation area of the positioning device on the machining center, and makes the material transfer path of the loading and unloading device shorter.

[0020] Preferably, the sheet machining center further includes a material tank and a workbench, and the positioning device is located adjacent to the front of the material tank.

[0021] Preferably, the positioning device comprises a bracket for mounting the positioning device on a plate processing center machine tool, a fixed positioning block and a movable positioning block mounted on the bracket, and the bracket, the fixed positioning block and the movable positioning block together enclose a positioning cavity. The movable positioning block can change its left and right position along the bracket, and the positioning cavity is used to accommodate the plate to be processed. When the plate to be processed is transported and inserted into the cavity, the movable positioning block changes its position to accurately position the plate.

[0022] Preferably, a guide rail is installed on the bracket, a guide rail slider which can move left and right along the guide rail is provided on the guide rail, left and right slides are installed on the guide rail slider, and the movable positioning block is installed on the left and right slides.

[0023] Preferably, the plate positioning device further comprises a driver, and the driver drives the left and right slides to drive the movable positioning block to slide left and right along the guide rail.

[0024] Preferably, the bracket, the fixed positioning block and the movable positioning block are respectively provided with positioning slots.

[0025] Preferably, the movable positioning block is also equipped with an elastic force-limiting piece. The setting of the left and right slides drives the movable positioning block to realize the positioning of the plate to be processed, and the setting of the elastic force-limiting piece buffers the positioning clamping force of the plate to avoid the plate from being crushed during positioning and clamping.

[0026] Preferably, the left and right slides of the plate positioning device are provided with a trough paddle that can drive the trough to slide left and right. When the left and right slides of the positioning device move left and right, the trough paddle simultaneously moves the trough left and right to adapt to the position change when the finished plate is put back into the trough.

[0027] The present invention also provides a material containing mechanism of a plate processing center, comprising a material trough and the plate positioning device mentioned above.

[0028] Preferably, the trough is provided with a driving block, and the trough paddle of the plate positioning device can drive the driving block to drive the trough to slide left and right. By cleverly arranging the trough paddle on the left and right slides of the positioning device / or on the components that can move left and right relative to the machine tool, a single drive can perform the mobile driving function of two functional objects, achieving an unexpected function sharing technical effect, simplifying the structure, reducing costs, and further reducing space occupancy.

[0029] Preferably, the material trough includes a material trough box for holding the plate material, and a tray for receiving the material trough box. A slide rail is installed on the machine tool of the plate processing center. The tray is installed on the slide rail and can slide left and right along the slide rail.

[0030] Preferably, the tray is a frame-shaped space structure, and a circular positioning rod is arranged inside the frame-shaped space structure, and the material trough box is placed inside the frame-shaped space.

[0031] The present invention also provides a sheet processing center, which applies the above-mentioned material holding mechanism, and further includes: a rotation mechanism, a first driving mechanism for carrying the rotation mechanism to move in the Y and Z axis directions relative to the machine tool, a processing head, a workbench, and a second driving mechanism for driving the processing head to move; the rotation mechanism includes a manipulator, and after the first driving mechanism drives the manipulator of the rotation mechanism to position the sheet to be processed perpendicular to the machine tool, the sheet to be processed is then placed on the workbench.

[0032] Preferably, the rotation mechanism further includes a rotating and moving frame, the manipulator is installed on the rotating and moving frame, the manipulator includes a processed sheet picker and a sheet to be processed picker arranged one in front of and the other behind the rotating and moving frame, and the processed sheet picker and the sheet to be processed picker are provided with suction cups in the same orientation; one end of the rotating and moving frame is connected to a driving device that drives it to perform a circular motion.

[0033] Preferably, when positioning the sheet to be processed, the manipulator inserts the sheet to be processed picked from the material trough into the positioning cavity of the sheet positioning device, and the left and right sliding tables of the sheet positioning device drive the movable positioning block to move towards the fixed positioning block in the opposite direction to press the sheet to be processed, and the manipulator continues to insert the sheet to be processed to the bottom of the positioning cavity and releases the sheet to be processed, so as to realize the positioning of the sheet to be processed before being placed on the workbench.

[0034] Preferably, when the second driving mechanism drives the processing head to process the sheet, the sheet to be processed picker of the manipulator picks up the positioned sheet to be processed from the sheet positioning device, and the manipulator rotates 90 degrees; when the processing head finishes processing the sheet, the manipulator and the workbench move relative to each other so that the processed sheet picker is located above the workbench, the processed sheet picker of the manipulator picks up the processed sheet from the workbench, the manipulator and the workbench move relative to each other so that the sheet to be processed picker is located above the workbench, and the sheet to be processed picker of the manipulator places the sheet to be processed on the workbench. While the processing head is processing, the rotation mechanism has completed picking up the positioned sheet to be processed, reducing the downtime of the processing head caused by loading and unloading operations, and improving the production efficiency of the whole machine. By using two pickers, one in front of and the other behind, the rotating and moving frame only needs to rotate 90 degrees to easily realize loading and unloading or material replacement, further improving the efficiency of loading and unloading / material replacement.

[0035] Preferably, when the processed sheet picker places the processed sheet back into the material chute, the chute paddle of the sheet positioning device drives the chute to slide left and right to adjust the position of the chute. At the same time, the manipulator rotates 90 degrees to place the processed sheet into the chute. Since there is a certain tolerance in the chute for the sheets loaded into it to facilitate the loading of the sheets, the sheets before processing have been positioned by the positioning device. The purpose is to eliminate the uncertainty of the position caused by the tolerance in the chute. However, the relative position of the positioned sheet in the left - right direction will change within the chute, that is, the whole positioned sheet has been displaced. To adapt to this change and enable the processed finished sheets to be smoothly loaded into the chute, the chute must make an adaptive adjustment in the left - right direction, and the chute paddle of the sheet positioning device drives the chute to make timely displacement adjustment.

[0036] Preferably, the workbench includes a processing table. The positioning cavity of the sheet positioning device corresponds to the processing table of the sheet processing center and also corresponds to the chute. Due to the corresponding relationship between the positioning cavity and the processing table, when the sheet positioned by the positioning cavity is taken to the processing table by the unprocessed sheet picker, the manipulator can accurately place the unprocessed sheet on the corresponding processing table, and the sheet placed on the processing table can be precisely processed by the processing head. Similarly, since the positioning cavity corresponds to the chute, when the manipulator picks up the unprocessed sheet, it can also accurately place the unprocessed sheet in the corresponding positioning cavity for positioning.

[0037] Preferably, the first drive mechanism includes: first guide rails respectively arranged on the left and right sides of the chute in the Y - axis direction. Corresponding to the first guide rails, there are first sliders that slide in the front - rear direction along the first guide rails, and a first drive device that drives the first slider to slide in the front - rear direction. Along the up - down direction on the first slider, there are second guide rails. Corresponding to the second guide rails, there are second sliders that can slide in the up - down direction along the second guide rails, and a second drive device that drives the second slider to move in the up - down direction.

[0038] Preferably, the processing head includes a processing headstock, a fixed seat, and a main shaft installed on the fixed seat. The processing headstock is arranged below the main shaft and is connected to the main shaft.

[0039] Preferably, the second drive mechanism includes a base, an X - axis guide rail fixed on the base, an X - axis slider and an X - axis drive motor arranged on the X - axis guide rail. The X - axis slider is driven by the X - axis drive motor to slide on the X - axis guide rail. The workbench is arranged on a Y - axis guide rail and is driven by a Y - axis drive motor to slide on the Y - axis guide rail. An Z - axis guide rail and an Z - axis drive motor are arranged on the X - axis slider. The processing headstock is installed on the Z - axis guide rail through a headstock fixing seat, and the headstock fixing seat is driven by the Z - axis drive motor to slide on the Z - axis guide rail.

[0040] The present invention also provides a processing method of a plate processing center, comprising the following steps:

[0041] 101. When the second driving mechanism drives the processing head to process the plate, the plate picker to be processed picks up the positioned plate to be processed, and the manipulator rotates 90 degrees;

[0042] 102. The processing head completes processing of the plate, and the processed plate picker of the manipulator picks up the processed plate from the workbench. The manipulator and the workbench move relative to each other so that the plate picker to be processed is located above the workbench. The first driving mechanism drives the manipulator so that the plate picker to be processed places the plate to be processed on the workbench.

[0043] 103. The first driving mechanism drives the manipulator to rotate 90 degrees, so that one side of the processed plate obtained by the processed plate picker faces the processed plate placement area of ​​the material trough. At the same time, the material trough paddle of the plate positioning device drives the material trough to slide left and right to adjust the position of the material trough. The first driving mechanism drives the processed plate picker of the manipulator to put the processed plate into the processed plate placement area of ​​the material trough, and the plate picker to be processed is unloaded.

[0044] 104. The first driving mechanism drives the rotating moving frame to rotate 180 degrees in the opposite direction, so that one side of the plate picker to be processed faces the placement area of ​​the plate to be processed in the trough and moves a set distance. At the same time, the trough paddle of the plate positioning device drives the trough to slide left and right to adjust the position of the trough, and the plate picker to be processed picks up the plate to be processed;

[0045] 105 . The plate picker to be processed inserts the plate to be processed into the positioning cavity of the plate positioning device for positioning, and then continues with step 101 .

[0046] Preferably, the step of inserting the plate to be processed into the positioning cavity of the plate positioning device for positioning by the plate picker is:

[0047] The robot inserts the plate to be processed picked up from the material trough into the positioning cavity of the plate positioning device;

[0048] The left and right slides of the plate positioning device drive the movable positioning block to move toward the opposite fixed positioning block to push the plate to be processed. The manipulator continues to insert the plate to be processed into the bottom of the positioning cavity and releases the plate to be processed, thereby realizing the positioning of the plate to be processed before being placed on the workbench.

[0049] Through the above technical solutions, we can see that:

[0050] 1. The positioning device is erected so that the sheet is positioned in a direction perpendicular to the machine tool, and it is not set above the chute and the workbench, effectively reducing the area occupied by the positioning device in the machining center. In particular, the positioning device is set adjacent to the rear of the chute, making the material handling path of the loading and unloading device shorter. In the entire machine tool, only a manipulator, a first driving mechanism, a positioning device, a workbench, a machining head, and a second driving mechanism are required. With a very small machining space, operations such as loading and unloading, sheet positioning, and sheet machining can be completed. The structure of the machining center is simpler and the operation is more convenient.

[0051] 2. The movable positioning block changes its left and right position along the bracket. The positioning cavity is used to accommodate the sheet to be machined. When the sheet to be machined is inserted into the cavity through transportation, the movable positioning block accurately positions the sheet through position change. And the elastic force-limiting piece is used to buffer the positioning and clamping force on the sheet, avoiding cracking the sheet during positioning and clamping.

[0052] 3. By cleverly setting the chute paddle on the left and right sliding tables of the positioning device / or on the components that can move left and right relative to the machine tool, a single drive can perform the moving drive functions of two functional objects, achieving an unexpected technical effect of function sharing, simplifying the structure, reducing the cost, and further reducing the space occupation.

[0053] 4. When the second driving mechanism drives the machining head to machine the sheet, the first driving mechanism drives the manipulator of the rotating mechanism to pick up and position the sheet to be machined from the positioning device and rotate 90 degrees, waiting for the machining head to complete the machining of the sheet for timely loading and unloading. While the machining head is machining, the rotating mechanism completes picking up the sheet to be machined from the positioning device, reducing the overlong downtime of the machining head caused by loading and unloading operations and improving the overall production efficiency of the machine.

[0054] 5. After the manipulator of a sheet machining center of the present invention obtains the sheet to be machined from the chute, it needs to be positioned on the sheet positioning device. Through the double-supported rotating mechanism (assuming the rotating mechanism is between two second sliding tables), the insufficient rigidity of the cantilever structure is avoided. When the manipulator transports the sheet to be machined from the positioning device to the machining table on the workbench, it can maintain a high transportation accuracy. Coupled with the correspondence between the machining table and the positioning cavity of the positioning device, the technical effect of accurately placing the sheet to be machined on the machining table for precise machining is achieved. At the same time, there are two pickers, one in front and one behind, with suction cups arranged in the same orientation. By simply rotating 90 degrees clockwise / counterclockwise, the material picking and replacement are completed, effectively shortening the loading and unloading time, improving the production efficiency of the machine tool, and not affecting the machining time.

[0055] 6. To facilitate the loading of the board, there is a certain tolerance in the material chute for the boards loaded into it. Before processing, the board has been positioned by the positioning device. The purpose is to eliminate the uncertainty of the position caused by the tolerance in the material chute. However, after positioning, the relative position of the board in the left - right direction changes within the material chute, that is, the whole positioned board has a displacement. To adapt to this change and enable the processed finished board to be smoothly loaded into the material chute, the material chute must be adjusted adaptively in the left - right direction. In addition, due to the material chute being pushed to the left, the whole unprocessed board in the material chute has a slight left - ward displacement change. Therefore, before the unprocessed board picker picks up the unprocessed board from the material chute, the left - right slide drives the material chute to move slightly to the right. Similarly, it is to ensure that when the unprocessed board picker picks up the unprocessed board and places it for positioning by the positioning device, the unprocessed board can be accurately placed into the positioning cavity for positioning. The setting of the chute paddle of the board positioning device can drive the material chute to adapt to the above - mentioned displacement change in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a perspective view of a board positioning device according to Embodiment 1 of the present invention;

[0057] Figure 2 is a front view of a board positioning

[0058] device according to Embodiment 1 of the present invention;

[0059] Figure 3 is a perspective view of a material chute of a board processing center according to Embodiment 2 of the present invention;

[0060] Figure 4 is an assembly schematic diagram of the material chute and the positioning device of a board processing center (excluding the material chute box) according to Embodiment 2 of the present invention;

[0061] Figure 5 is a perspective view of a board processing center according to Embodiment 3 of the present invention;

[0062] Figure 6 is a side view of a board processing center according to Embodiment 3 of the present invention;

[0063] Figure 7 is a flowchart of a board processing method according to Embodiment 4 of the present invention.

[0064] Among them, 1 - positioning device, 11 - bracket, 12 - fixed positioning block, 13 - movable positioning block, 14 - guide rail, 15 - left - right slide, 16 - driver, 17 - positioning slot, 18 - elastic force - limiting piece, 19 - chute paddle;

[0065] 2 - material chute, 21 - material chute box, 22 - tray, 23 - slide rail, 24 - circular positioning rod, 25 - driving block;

[0066] 3 - Rotating mechanism, 31 - Rotary moving frame, 32 - Machined plate picker, 33 - Plate to be machined picker, 34 - Driving device;

[0067] 4 - Machine tool;

[0068] 5 - First driving mechanism, 51 - First guide rail, 52 - First sliding table, 53 - First driving device, 54 - Second guide rail, 55 - Second sliding table, 56 - Second driving device;

[0069] 6 - Machining head, 61 - Machining headstock, 611 - Tool bit, 62 - Fixed seat, 63 - Spindle;

[0070] 7 - Workbench, 71 - Machining table;

[0071] 8 - Second driving mechanism, 81 - Base, 811 - X - axis guide rail, 82 - X - axis sliding table, 83 - Y - axis guide rail, 84 - Z - axis driving motor. Detailed implementation manners

[0072] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0073] In the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "front" and "rear" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0074] The following further illustrates the specific implementation manners of the present invention in conjunction with the accompanying drawings.

[0075] Embodiment 1:

[0076] Refer to the attached Figure 1-2 , the embodiment of the present invention provides a plate positioning device 1 for positioning a plate in a direction perpendicular to the machine tool in a plate processing center. The plate processing center includes a machine tool, a material tank and a workbench, and the horizontal plane of the workbench is parallel to the horizontal plane of the machine tool.

[0077] The positioning device 1 is of an upright structure and can be vertically arranged on the machine tool of the plate processing center and installed adjacent to the rear of the material tank, between the material tank and the workbench. In addition, the positioning device 1 can also be installed adjacent to the front of the material tank.

[0078] The positioning device 1 includes: a bracket 11 for mounting the positioning device 1 on a plate processing center machine tool, a plurality of fixed positioning blocks 12 and movable positioning blocks 13 detachably mounted on the bracket 11; during the use of the positioning device 1, the plate will be placed in a U-shaped positioning cavity jointly enclosed by the bracket 11, the fixed positioning blocks 12 and the movable positioning blocks 13. The position of the fixed positioning blocks 12 relative to the bracket 11 remains unchanged, while the movable positioning blocks 13 will change their left and right positions along the bracket 11 to complete the precise positioning of the plate.

[0079] Further, a guide rail 14 is mounted on the bracket 11, and a guide rail slider (not shown in the drawings) that can move left and right along the guide rail 14 is provided on the guide rail 14. A left and right slide table 15 is mounted on the guide rail slider, and the movable positioning block 13 is mounted on the left and right slide table 15, so that the movable positioning block 13 can slide left and right along with the left and right slide table 15; the positioning device 1 further includes a driver 16, and the driver 16 drives the left and right slide table 15 to drive the movable positioning block 13 to slide left and right along the guide rail 14.

[0080] Further, a plurality of positioning slots 17 are respectively provided on the bracket 11, the fixed positioning blocks 12 and the movable positioning blocks 13. In this embodiment, there are two positioning slots 17 provided on the bracket 11, the fixed positioning blocks 12 and the movable positioning blocks 13 respectively, and the positioning slots 17 are used to clamp the plate.

[0081] Further, an elastic force limiting piece 18 is also mounted at the middle position between the two positioning slots 17 on the movable positioning block 13. The elastic force limiting piece 18 is provided to buffer the positioning clamping force on the plate when the movable positioning block 13 positions the plate, and avoid crushing the plate during positioning and clamping.

[0082] Further, a material groove dial 19 is also provided on one side of the left and right slide table 15. The material groove dial 19 dials the material groove to move left and right while the left and right slide table 15 moves left and right to adapt to the position change when the finished plate is loaded back into the material groove. Of course, the material groove dial 19 is not limited to being mounted on the left and right slide table 15. As long as the material groove dial 19 is provided on a certain component of the positioning device 1 that can move left and right relative to the machine tool and dials the material groove to move left and right, it is within the protection scope of the present invention.

[0083] The main function of the positioning device 1 is that since there will be errors when the loading and unloading mechanism of the plate processing center places the plate to be processed on the workbench of the processing center, if the plate to be processed is directly placed on the workbench, it may cause the position and state of the plate to be processed to be uncertain and cannot be accurately processed. Therefore, before the plate to be processed is sent to the workbench, the plate to be processed needs to be accurately positioned and then sent to the workbench to achieve accurate processing of the plate to be processed. In this embodiment, the positioning device 1 can accurately position the plate loaded into the U-shaped accommodating cavity by controlling the left and right sliding tables 15 to drive the left and right movement of the movable positioning block 13. Moreover, since the fixed positioning block 12 and the movable positioning block 13 can be detached from the bracket 11, according to the size change of different plates, before use, the positions of the fixed positioning block 12 and the movable positioning block 13 are adjusted to adapt to the size change of different plates.

[0084] Moreover, by not setting the positioning device on the workbench, the utilization rate of the workbench area is higher, the risk of interference between the structures with similar functions such as the positioning device and the movement of the processing head is reduced, and the complexity and protection requirements of the positioning device are lowered. The positioning device is arranged adjacent to the rear of the material tank and perpendicular to the machine tool, and the plate is positioned in the direction perpendicular to the machine tool, effectively reducing the area occupied by the positioning device in the processing center and making the material transportation path of the loading and unloading device shorter.

[0085] Embodiment 2:

[0086] See the appendix Figure 3-4 , this embodiment provides a material holding mechanism for a plate processing center, including the positioning device 1 in Embodiment 1 and a material tank 2. The material tank 2 is used in combination with the positioning device 1 in Embodiment 1.

[0087] The material tank 2 includes a material tank box 21 for holding plates and a tray 22 for receiving the material tank box 21. A slide rail 23 is detachably installed on the machine tool of the plate processing center, and the tray 22 is installed on the slide rail 23 and can slide left and right along the slide rail 23.

[0088] The tray 22 is a frame-shaped space surrounded by multiple aluminum profiles. A circular positioning rod 24 is arranged in the frame-shaped space for positioning the material tank box 21 in the left and right directions shown in the drawings, and the material tank box 21 is placed in the frame-shaped space.

[0089] A driving stopper 25 is further arranged on the tray 22. The chute paddle 19 of the positioning device 1 drives the driving stopper 25, thereby driving the tray 22 and the chute box 21 to slide left and right along the slide rail 23 to adapt to the position change when the finished sheet is loaded back into the chute. Moreover, the left and right sliding distance of the tray 22 can be set and adjusted by the chute paddle 19. Of course, this embodiment is not limited to being used in combination with the positioning device 1. Positioning devices containing chute paddles with the same function can all be used in combination with the chute in this embodiment.

[0090] In particular, in this embodiment, by cleverly arranging chute paddles on the left and right sliding tables of the positioning device, only by driving the left and right sliding tables 15 of the positioning device 1 can the moving driving functions of two functional objects (i.e., the movable positioning stopper 13 and the chute 2) be executed, achieving an unexpected technical effect of function sharing, simplifying the structure, reducing the cost, and further reducing the space occupation.

[0091] Embodiment 3:

[0092] For the convenience of understanding the technical solution in this embodiment, referring to the attached drawings, taking the perspective of the operator standing directly in front of the machining center facing the machining head as the reference, the X, Y, and Z axes are defined as a Cartesian coordinate system. The extending direction of the X axis is the left and right horizontal direction, the left side of the operator is the left side of the machining center, and the right side of the operator is the right side of the machining center; the extending direction of the Y axis is the front and back longitudinal direction, the side close to the operator is the front side of the machining center, and the side far from the operator is the rear side of the machining center; the extending direction of the Z axis is the up and down vertical direction.

[0093] See the attached Figure 5-6 , an embodiment of the present invention provides a sheet machining center. In addition to including the positioning device 1 and the chute 2 in Embodiments 1 and 2, it further includes a rotating mechanism 3, a machine tool 4, a first driving mechanism 5 for carrying the rotating mechanism 3 to move in the Y and Z axis directions relative to the machine tool 4, a machining head 6, a workbench 7, and a second driving mechanism 8 for driving the machining head 6 to move.

[0094] The rotating mechanism 3 includes a rotating moving frame 31. A manipulator is installed on the rotating moving frame 31, namely a machined sheet picker 32 and a to-be-machined sheet picker 33, which are arranged one in front of and one behind the rotating moving frame 31. One end of the rotating moving frame 31 is connected to a driving device 34 that drives it to perform a circular rotating motion. The driving device 34 can adopt a servo motor, a direct drive servo, or a pneumatic motor. A speed reducer can be added between the driving device 34 and the rotating moving frame 31 to increase the torque, so that the rotating moving frame 31 can drive more manipulators to rotate. The rotating moving frame 31 drives the machined sheet picker 32 and the to-be-machined sheet picker 33 to perform a rotating motion relative to the front, lower, and rear three faces of the machining center.

[0095] Furthermore, the processed sheet picker and the to-be-processed sheet picker are provided with suction cups in the same orientation; in this embodiment, when the processed sheet picker 32 and the to-be-processed sheet picker 33 are driven by the rotary moving frame 31 to be parallel to the horizontal plane below the machining center, suction cups are provided on the side of the processed sheet picker 32 and the to-be-processed sheet picker 33 facing the horizontal plane below the machining center, while no suction cups are provided on the other side away from the horizontal plane of the machining center.

[0096] The first driving mechanism 5 includes: first guide rails 51 respectively arranged in the Y-axis direction on the left and right sides of the material trough 2, first sliders 52 corresponding to the first guide rails 51 and sliding in the front-back direction along the first guide rails 51, and a first driving device 53 for driving the first slider 52 to slide in the front-back direction; second guide rails 54 are respectively arranged in the up-down direction on the first slider 52, second sliders 55 corresponding to the second guide rails 54 and sliding in the up-down direction along the second guide rails 54, and a second driving device 56 for driving the second slider 55 to move in the up-down direction.

[0097] In this embodiment, the rotating mechanism 3 and the first driving mechanism 5 together constitute a loading and unloading device for picking and placing sheets, and the rotary moving frame 31 is erected between the two second sliders 55.

[0098] In addition, through the first driving mechanism 5, the manipulator can easily move back and forth and up and down, and can easily move to the workbench 7 after picking and placing materials up and down. The first driving mechanism 5 can work independently with the machining head 6 and the workbench 7 to improve the machining efficiency. Since the first guide rails 51 are arranged on both sides of the material trough, it is convenient for the entire loading and unloading device to be combined with the machining head 6 and the second driving mechanism 8. In terms of space utilization, the space occupied by the machining part can be reduced. At the same time, the double-support rotating mechanism 3 avoids the insufficient rigidity of the single-side cantilever structure, not only laying a precision foundation for positioning the sheets outside the workbench 7, but also as long as the length of the rotary moving mechanism 31 and the power of the rotating mechanism 3 meet the requirements, the manipulator can be maximally expanded on the rotary moving mechanism 31, and the number of manipulators corresponds to the number of workbenches 7, greatly improving the work efficiency and breaking through the limitation of the existing machining machine tools that generally can only expand two workbenches under the limitation of the space structure. In this embodiment, at least two manipulators are installed on the rotary moving frame, a material trough 2 is correspondingly arranged below each manipulator, and a workbench 7 is correspondingly arranged at the rear of each material trough 2.

[0099] Furthermore, a cleaning air curtain (not shown in the figure) is also provided on the rotary transfer frame 31, between the processed sheet picker 32 and the to-be-processed sheet picker 33, in the same direction as the side of the picker suction cup, for cleaning the workbench 7.

[0100] The processing head 6 includes a processing headstock 61, and a cutter head 611 is installed below the processing headstock. The cutter head 611 can perform processing such as grinding, milling, and drilling on the plate. For the driving mechanism for driving the processing headstock 61 to process, an existing robot arm can be used to realize the movement of the processing headstock 61 on the X, Y, and Z axes.

[0101] Furthermore, the processing head 6 further includes a fixed seat 62, a main shaft 63 installed on the fixed seat 62, and the processing headstock 61 is arranged below the main shaft 63 and connected to the main shaft 63. The main shaft 63 can rotate at high speed and precision to cooperate with the processing headstock 61 to process the plate.

[0102] And generally, the workbench 7 is fixed relative to the machine tool 4 and cannot change its position. However, once the position of the workbench 7 is fixed, it will cause inconvenience to the feeding and discharging efficiency and the cleaning of the workbench 7; moreover, the structure of the processing headstock 61 moving along the Y axis will also inevitably cause problems such as a large space occupied by the processing head 6 and low feeding and discharging efficiency.

[0103] Therefore, to further save the processing space, the second driving mechanism drives the whole processing head 6 to move on the X and Z axes, and the workbench 7 can move back and forth along the Y axis. Specifically, the second driving mechanism 8 includes a base 81, an X-axis guide rail 811 fixed on the base 81, an X-axis slide table 82 and an X-axis driving motor (not shown in the figure) are provided on the X-axis guide rail 811. The X-axis slide table 82 slides on the X-axis guide rail 811 under the drive of the X-axis driving motor 83. The workbench 7 is arranged on the Y-axis guide rail 83 and is driven by a Y-axis driving motor (not shown in the figure) to slide on the Y-axis guide rail 83. A Z-axis guide rail (not shown in the figure) and a Z-axis driving motor 84 are provided on the X-axis slide table 82. The processing headstock 61 is installed on the Z-axis guide rail through the headstock fixing seat 62, and the headstock fixing seat 62 slides on the Z-axis guide rail under the drive of the Z-axis driving motor 85. It can be seen that in this embodiment, the workbench 7 is driven by a Y-axis driving motor of the second driving mechanism 8 to move on the Y axis, so that the processing head 6 can realize a complete grinding and milling action without moving on the Y axis, and at the same time avoid interference with the manipulator in the front and back directions.

[0104] Further, a processing table 81 is installed on the workbench 8. The processing table 81 is a vacuum adsorption workbench that can adsorb and clamp the board. The U-shaped positioning cavity of the board positioning device 1 corresponds to the processing table 81 of the board processing center and also corresponds to the material tank 2. Due to the corresponding relationship between the positioning cavity and the processing table 81, when the board positioned by the positioning cavity is picked up by the board to be processed picker and placed on the processing table 81, the manipulator can accurately place the board to be processed on the corresponding processing table 81. The board placed on the processing table 81 can be accurately processed by the processing head 6; similarly, since the positioning cavity corresponds to the material tank 2, when the manipulator picks up the board to be processed, it can also accurately place the board to be processed in the corresponding positioning cavity for positioning.

[0105] The processing center, together with the double-support rotating mechanism 3 and other components of the above-mentioned processing center, constitutes a complete gantry fixed-beam type processing center.

[0106] After the manipulator of the board processing center in this embodiment obtains the board to be processed from the material tank, it needs to be positioned on the board positioning device. By means of the double-support rotating mechanism (assuming the rotating mechanism is between two second sliding tables), the insufficient rigidity of the cantilever structure is avoided. When the manipulator transports the board to be processed from the positioning device to the processing table on the workbench, it can maintain a high transportation accuracy. Coupled with the corresponding relationship between the processing table and the positioning cavity of the positioning device, the technical effect of accurately placing the board to be processed on the processing table for precise processing is achieved. At the same time, there are two pickers, one in front and one behind, with suction cups on the same side. Only by rotating 90 degrees can the material picking and replacement be completed, without affecting the processing time.

[0107] Embodiment 4:

[0108] See Appendix Figure 7 The embodiment of the present invention provides a board processing method, which is based on the positioning device 1, the material tank 2 and the board processing center in the above-mentioned Embodiments 1-3 as processing equipment, and proposes a processing method that can improve the processing efficiency.

[0109] The processing method includes the following steps:

[0110] 101. When the second driving mechanism drives the processing head to process the board, the board to be processed picker picks up the positioned board to be processed, and the manipulator rotates 90 degrees;

[0111] 102. After the processing head finishes processing the board, the processed board picker of the manipulator picks up the processed board from the workbench. The manipulator and the workbench move relative to each other so that the board to be processed picker is located above the workbench. The first driving mechanism drives the manipulator, so that the board to be processed picker places the board to be processed into the workbench;

[0112] 103. The first driving mechanism drives the manipulator to rotate 90 degrees, so that one side of the processed plate picked up by the processed plate picker faces the processed plate placement area of the material chute. At the same time, the chute paddle of the plate positioning device drives the chute to slide left and right to adjust the position of the chute. The first driving mechanism drives the processed plate picker of the manipulator to place the processed plate in the processed plate placement area of the chute, and at the same time, the unprocessed plate picker is empty.

[0113] 104. The first driving mechanism drives the rotating moving frame to rotate 180 degrees in the reverse direction, so that one side of the unprocessed plate picker faces the placement area of the unprocessed plate in the material chute, and moves a set distance. At the same time, the chute paddle of the plate positioning device drives the chute to slide left and right to adjust the position of the chute, and the unprocessed plate picker picks up the unprocessed plate.

[0114] 105. The unprocessed plate picker inserts the unprocessed plate into the positioning cavity of the plate positioning device for positioning, and continues with step 101.

[0115] The step of the unprocessed plate picker inserting the unprocessed plate into the positioning cavity of the plate positioning device for positioning is as follows:

[0116] a. The manipulator inserts the unprocessed plate picked up from the material chute into the positioning cavity of the plate positioning device.

[0117] b. The left and right sliding tables of the plate positioning device drive the movable positioning block to move towards the fixed positioning block in the opposite direction to press the unprocessed plate. The manipulator continues to insert the unprocessed plate to the bottom of the positioning cavity and releases the unprocessed plate, so as to realize the positioning of the unprocessed plate before it is placed on the workbench.

[0118] The whole process of the specific processing method is introduced as follows:

[0119]

Preparation state before plate processing

[0120] Assume that the operator faces the machining center. Taking the operator's perspective when facing the front of the machining center as the standard, the left side of the operator is the left direction, the right side is the right direction, the side of the machining center close to the operator is the front, and the other side far from the operator is the rear.

[0121] When the machining center is in the machining preparation state, the material chute contains unprocessed plates, the rotating mechanism is located above the material chute, the positioning device is in the open state (that is, the movable positioning block is at the rightmost position where it can move in the X-axis direction). In addition, under the linkage of the chute paddle, the material chute is also at the rightmost position where it can move in the X-axis direction.

[0122] The processing head is located at the upper leftmost position of the machining center, i.e., the leftmost side in the X-axis direction, the uppermost side in the Z-axis direction, and the rearmost side in the Y-axis direction; the worktable is located at the rearmost side in the Y-axis direction; the rotating mechanism is located at the foremost side in the Y-axis direction and the uppermost side in the Z-axis direction; the unprocessed plate picker and the processed plate picker are parallel to the horizontal plane of the machining center and the side with the suction cups faces downward, and the unprocessed plate picker and the processed plate picker are arranged one in front and the other behind (defining the front picker as the unprocessed plate picker and the rear picker as the processed plate picker).

[0123]

Loading

[0124] When the machining center starts processing, the rotary moving frame rotates counterclockwise by 90 degrees, so that the orientation of the unprocessed plate picker and the processed plate picker relative to the machining center changes from the horizontal direction to the vertical direction. At this time, the unprocessed plate picker is below and the processed plate picker is above.

[0125] The first driving mechanism drives the manipulator to move downward and forward. After reaching the position close to the unprocessed plate in the material tank and reaching the set position, the unprocessed plate picker picks up the first unprocessed plate, and the rotating mechanism drives the unprocessed plate picker to move upward and withdraw the unprocessed plate from the material tank; after picking up the unprocessed plate, the first driving mechanism drives the rotary moving frame to move backward to above the positioning device and continue to move downward to insert the unprocessed plate into the U-shaped positioning cavity of the positioning device; when the unprocessed plate reaches the set position of the U-shaped positioning cavity, the left and right sliding tables of the positioning device drive the movable positioning block to move leftward, and the unprocessed plate is positioned in the X-axis direction under the action of the elastic limiting piece. At this time, the unprocessed plate picker continues to suck the unprocessed plate and slightly presses downward (for some plates with slightly larger mass, it can also rely on its own gravity to press), and the unprocessed plate is positioned in the Z-axis direction; when the positioning in both the X-axis and Z-axis directions is completed, the unprocessed plate picker releases the unprocessed plate, and the positioning of the unprocessed plate is completed; then, the unprocessed plate picker picks up the positioned unprocessed plate again, and at the same time the movable positioning block moves rightward, and the unprocessed plate picker withdraws the unprocessed plate upward from the positioning device. The first driving mechanism drives the rotary moving frame to the front of the worktable and simultaneously rotates the rotary moving frame clockwise by 90 degrees. At this time, both pickers face downward and are parallel to the worktable, and the unprocessed plate picker adsorbs the unprocessed plate, while the processed plate picker is suspended; while the first driving mechanism drives the manipulator to move towards the worktable, the worktable also moves from the rear to the front, and the cleaning air curtain is opened to blow and clean the surface of the processing table on the worktable; after the worktable reaches the set position in front of the machining center, the first driving mechanism drives the unprocessed plate picker to release the unprocessed plate onto the processing table and move it away from the processing area, and the processing head performs numerical control processing on the first plate blank.

[0126]

Ingredients preparation

[0127] Repeat the above-mentioned pre-sequence actions, the plate picker to be processed obtains the second plate to be processed in the material trough, completes positioning, and is driven by the first driving mechanism to the top of the processing table and in front of the processing head to wait for the processing of the first plate to be processed to be completed.

[0128]

Material change

[0129] When the first plate is processed, the manipulator of the rotating mechanism picks up the second plate to be processed from the positioning device, and the manipulator rotates 90 degrees counterclockwise. At this time, the picker for the plate to be processed and the picker for the processed plate are arranged one after the other, waiting for the processing head to complete the processing. After the processing is completed, the processing head and the workbench return to the initial position (that is, the processing head is located at the upper left of the processing center, and the workbench is located at the rear). The relative movement of the manipulator and the workbench makes the picker for the processed plate align with the processed plate on the processing table of the workbench. After picking up the processed plate, the vacuum of the processing table is turned off, and the first plate is processed. A driving mechanism drives the processed plate picker to slightly lift the processed plate upwards, and the processed plate is removed from the processing table. At the same time, the manipulator and the worktable move relative to each other, and the cleaning air curtain on the rotating mechanism opens to blow and clean the surface of the processing table. When the processing table reaches the rear set position (that is, the plate picker to be processed is aligned above the processing table), the plate picker to be processed loads the plate to be processed into the processing table, and the processing table sucks the plate to be processed. The plate picker to be processed releases the plate to be processed and moves away from the processing area, and the processing head performs CNC processing on the second plate to be processed. At this time, the plate picker to be processed is suspended in the air, and the processed plate picker has the processed plate sucked on it.

[0130] When the rotating moving frame moves away from the processing area, it rotates 90 degrees clockwise at the appropriate set position. At this time, the two pickers face forward and are perpendicular to the horizontal plane of the workbench, and continue to move to the set position in front of the trough. At this time, the trough paddle moves the trough as a whole to the left, and the processed plate picker continues to insert the processed plate into the set trough of the trough. After that, the trough paddle drives the trough as a whole to reset to the right, and the rotating mechanism drives the manipulator to rotate 180 degrees, so that the plate picker to be processed picks up the next plate from the trough, and continues to complete a complete loading and unloading and processing operation.

[0131] The reason why the entire trough needs to be slightly moved to the left before loading the plates to be processed is that, in order to facilitate the loading of the plates, the trough will have a certain tolerance for the plates loaded therein. Before processing, the plates are positioned by the positioning device, the purpose of which is to eliminate the uncertainty of the position of the plates caused by the tolerance in the trough. However, the relative position of the plates in the trough in the X-axis direction will change after positioning, that is, the positioned plates are displaced to the left as a whole. In order to adapt to this change and enable the processed finished plates to be smoothly loaded into the trough, the trough must be adaptively adjusted in the X-axis direction, that is, the trough must be slightly displaced to the left, and the trough paddles on the left and right slides can move the trough and the bracket in a linked manner in the X-axis direction (left and right).

[0132] In addition, since the material trough is moved to the left, the entire sheet to be processed in the material trough has a slight displacement to the left. Therefore, before the sheet picker picks up the sheet to be processed from the material trough, the left and right slides drive the material trough to reset slightly to the right. This is also for the purpose of accurately placing the sheet to be processed into the U-shaped positioning cavity for positioning when the sheet picker picks up the sheet to be processed and places it on the positioning device for positioning.

[0133]

Rack replacement

[0134] After all the plates in the tray are processed, the system controller sends a signal to change the rack. The tray locking device opens, and the tray and the tray box on it can be removed from the slide rail manually or by an automated robot, or only the tray box can be replaced, and the tray box containing the blanks can be loaded onto the tray. The tray locking device is locked, and the next cycle of automated processing is carried out.

[0135] A control motor can be added to control the locking device of the trough, and the control motor drives the rotating shaft of the locking device to rotate. Of course, the control of the locking device of the trough can also adopt a pneumatic or hydraulic rotary pressing cylinder.

[0136] Of course, in this embodiment, the front picker is set as a picker for processed plates, and the rear picker is set as a picker for plates to be processed, and their corresponding operation methods and processing methods are all within the protection scope of the present invention.

[0137] A person skilled in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the storage medium may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0138] In this embodiment, while the processing head is processing, the rotating mechanism completes the positioning of the to-be-processed plate, reducing the excessive downtime of the processing head caused by loading and unloading operations and improving the production efficiency of the whole machine. At the same time, there are two pickers, one in the front and the other in the back. At the workbench end, only by moving the workbench back and forth can the material be changed, effectively shortening the loading and unloading time and improving the production efficiency of the machine tool. At the material chute end, the material picking and loading are completed by the rotation of the rotating mobile rack, without affecting the processing time.

[0139] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A material storage mechanism for a sheet processing center, characterized in that: it includes a material trough and a sheet positioning device; the positioning device is used for positioning the sheet to be processed in the sheet processing center before processing; the positioning device is of an upright structure and is vertically arranged on the machine tool of the sheet processing center, and the positioning device positions the sheet to be processed perpendicular to the machine tool; the positioning device includes a bracket for installing the positioning device on the machine tool of the sheet processing center, a fixed positioning block and a movable positioning block installed on the bracket, and the bracket, the fixed positioning block and the movable positioning block jointly enclose a positioning cavity; a guide rail is installed on the bracket, and a guide rail slider that can move left and right along the guide rail is arranged on the guide rail, and a left and right slide table is installed on the guide rail slider, and the movable positioning block is installed on the left and right slide table; a material trough dial that can drive the material trough to slide left and right is arranged on the left and right slide table of the sheet positioning device; the material trough is provided with a driving block, and the material trough dial of the sheet positioning device can drive the driving block to drive the material trough to slide left and right.

2. The material storage mechanism for a sheet processing center according to claim 1, characterized in that: the sheet processing center further includes a workbench, and the positioning device is located adjacent to the rear of the material trough and between the material trough and the workbench.

3. The material storage mechanism for a sheet processing center according to claim 1, characterized in that: the sheet processing center further includes a workbench, and the positioning device is located adjacent to the front of the material trough.

4. The material storage mechanism for a sheet processing center according to claim 1, characterized in that: the sheet positioning device further includes a driver, and the driver drives the left and right slide table to drive the movable positioning block to slide left and right along the guide rail.

5. The material storage mechanism for a sheet processing center according to claim 1, characterized in that: positioning card slots are respectively arranged on the bracket, the fixed positioning block and the movable positioning block.

6. The material storage mechanism for a sheet processing center according to claim 1, characterized in that: an elastic force limiting piece is further installed on the movable positioning block.

7. The material storage mechanism for a sheet processing center according to claim 1, characterized in that: the material trough includes a material trough box for storing sheets and a tray for receiving the material trough box, a slide rail is installed on the machine tool of the sheet processing center, and the tray is installed on the slide rail and can slide left and right along the slide rail.

8. The material storage mechanism for a sheet processing center according to claim 7, characterized in that: the tray is a frame-shaped space structure, and a circular positioning rod is arranged in the frame-shaped space structure, and the material trough box is placed in the frame-shaped space.

9. A sheet processing center, characterized in that, it includes the material storage mechanism for a sheet processing center according to any one of claims 1-8 above, and further includes: a rotating mechanism, a first driving mechanism for carrying the rotating mechanism to move in the Y and Z axis directions relative to the machine tool, a processing head, a workbench, and a second driving mechanism for driving the processing head to move; the rotating mechanism includes a manipulator, and after the first driving mechanism drives the manipulator of the rotating mechanism to position the sheet to be processed perpendicular to the machine tool, it is then placed into the workbench.

10. The sheet processing center according to claim 9, characterized in that: The rotating mechanism further includes a rotating moving frame, the manipulator is installed on the rotating moving frame, the manipulator includes a processed sheet picker and a to-be-processed sheet picker arranged one in front of the other relative to the rotating moving frame, and the processed sheet picker and the to-be-processed sheet picker are provided with suction cups in the same orientation; one end of the rotating moving frame is connected to a driving device that drives it to perform a circular motion.

11. The sheet processing center according to claim 9, characterized in that: When positioning the to-be-processed sheet, the manipulator inserts the to-be-processed sheet picked up from the material trough into the positioning cavity of the sheet positioning device, and the left and right sliding tables of the sheet positioning device drive the movable positioning block to move towards the opposite fixed positioning block to press the to-be-processed sheet, and the manipulator continues to insert the to-be-processed sheet to the bottom of the positioning cavity and releases the to-be-processed sheet, so as to realize the positioning of the to-be-processed sheet before being placed on the workbench.

12. The sheet processing center according to claim 9, characterized in that: When the second driving mechanism drives the processing head to process the sheet, the to-be-processed sheet picker of the manipulator picks up the positioned to-be-processed sheet from the sheet positioning device, and the manipulator rotates 90 degrees; when the processing head finishes processing the sheet, the processed sheet picker of the manipulator picks up the processed sheet from the workbench, the relative movement of the manipulator and the workbench makes the to-be-processed sheet picker located above the workbench, and the to-be-processed sheet picker of the manipulator places the to-be-processed sheet on the workbench.

13. The sheet processing center according to claim 9, characterized in that: When the processed sheet picker places the processed sheet back into the material trough, the material trough dial of the sheet positioning device drives the material trough to slide left and right to adjust the position of the material trough, and at the same time the manipulator rotates 90 degrees and places the processed sheet into the material trough.

14. The sheet processing center according to any one of claims 9-13, characterized in that: The workbench includes a processing table, and the positioning cavity of the sheet positioning device corresponds to the processing table of the sheet processing center and also corresponds to the material trough.

15. The sheet processing center according to any one of claims 9-13, characterized in that: The first driving mechanism includes: first guide rails respectively arranged on the left and right sides of the material trough in the Y-axis direction, first sliders corresponding to the first guide rails and sliding in the front and back directions along the first guide rails, and a first driving device for driving the first slider to slide in the front and back directions; second guide rails are respectively arranged on the first slider in the up and down directions, second sliders corresponding to the second guide rails and sliding in the up and down directions along the second guide rails, and a second driving device for driving the second slider to move in the up and down directions.

16. The sheet processing center according to any one of claims 9-13, characterized in that: The processing head includes a processing machine head, a fixed seat, and a main shaft installed on the fixed seat, and the processing machine head is arranged under the main shaft and connected to the main shaft.

17. The sheet processing center according to any one of claims 9-13, characterized in that: The second driving mechanism includes a base, an X-axis guide rail fixed on the base, an X-axis slide and an X-axis drive motor are provided on the X-axis guide rail, the X-axis slide is driven by the X-axis drive motor to slide on the X-axis guide rail, the workbench is arranged on the Y-axis guide rail and is driven by a Y-axis drive motor to slide on the Y-axis guide rail, the X-axis slide is provided with a Z-axis guide rail and a Z-axis drive motor, the processing head is installed on the Z-axis guide rail through a head fixing seat, and the head fixing seat is driven by the Z-axis drive motor to slide on the Z-axis guide rail.

18. A processing method of a plate processing center, using the plate processing center according to any one of claims 9 to 17, It is characterized in that The following steps are involved:

101. When the second driving mechanism drives the processing head to process the plate, the plate picker to be processed picks up the positioned plate to be processed, and the manipulator rotates 90 degrees; 102. The processing head completes processing of the plate, and the processed plate picker of the manipulator picks up the processed plate from the workbench. The manipulator and the workbench move relative to each other so that the plate picker to be processed is located above the workbench. The first driving mechanism drives the manipulator so that the plate picker to be processed places the plate to be processed on the workbench.

103. The first driving mechanism drives the manipulator to rotate 90 degrees, so that one side of the processed plate obtained by the processed plate picker faces the processed plate placement area of ​​the material trough. At the same time, the material trough paddle of the plate positioning device drives the material trough to slide left and right to adjust the position of the material trough. The first driving mechanism drives the processed plate picker of the manipulator to put the processed plate into the processed plate placement area of ​​the material trough, and the plate picker to be processed is unloaded.

104. The first driving mechanism drives the rotating moving frame to rotate 180 degrees in the opposite direction, so that one side of the plate picker to be processed faces the placement area of ​​the plate to be processed in the trough and moves a set distance. At the same time, the trough paddle of the plate positioning device drives the trough to slide left and right to adjust the position of the trough, and the plate picker to be processed picks up the plate to be processed; 105 . The plate picker to be processed inserts the plate to be processed into the positioning cavity of the plate positioning device for positioning, and then continues with step 101 .

19. A processing method for a plate processing center as claimed in claim 18, It is characterized in that The steps of inserting the plate to be processed into the positioning cavity of the plate positioning device for positioning are as follows: The robot inserts the plate to be processed picked up from the material trough into the positioning cavity of the plate positioning device; The left and right slides of the plate positioning device drive the movable positioning block to move toward the opposite fixed positioning block to push the plate to be processed. The manipulator continues to insert the plate to be processed into the bottom of the positioning cavity and releases the plate to be processed, thereby realizing the positioning of the plate to be processed before being placed on the workbench.

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