Machining device for small plate preforms

Abstract

The utility model discloses a processing device for a small-sized plate preform, which belongs to a carbon material processing device and comprises a working rack, a movable pedestal, a spraying mechanism, a needling mechanism and a cutting mechanism, the working rack comprises a working table plate and a supporting plate which are arranged in an up-and-down layered manner, and the working table plate is provided with a guide groove along the length direction of the working table plate; one end of the working table plate is provided with a spraying mechanism which is opened in the corresponding side of the guide groove; the movable pedestal is slidably arranged in the length direction of the supporting plate. The sealing cabin door comprises a door plate for sealing the spraying cabin body and an opening and closing driving mechanism; the needling mechanism is correspondingly arranged above the working table plate and can perform reciprocating needling action on the processing raw materials on the placing table plate; and the cutting mechanism is correspondingly arranged on one side of the needling mechanism and can cut the processing raw materials on the placing table plate. The device can meet the machining requirements of small plate workpieces, and is suitable for laboratory research and development and structural design of carbon material workpieces.

Description

Technical Field

[0001] The utility model relates to a carbon material processing device, in particular to a processing device for a small plate preform. Background Art

[0002] With the rapid development of carbon-carbon material related fields such as aerospace, semiconductors, and new energy vehicles, the variety of thermal structural products has put forward more requirements on the production cost and efficiency of plate-type preforms. However, the research and development of preform processing equipment is relatively backward, and the research and development of small workpiece products relies more on existing large-scale processing equipment, resulting in high product structure design and verification costs and the following technical problems: (1) Using plate-type preforms for production equipment verification wastes more carbon fiber materials and is costly; (2) Production equipment occupies a large area, has many process partitions, low degree of integration, and low overall efficiency; (3) Production equipment generally lacks misalignment, which affects process design and requires manual misalignment, affecting the performance of the final preform; (4) The density limit of the preform is limited, and it is impossible to add more free carbon to the gap. The traditional immersion and direct spraying processes will cause environmental pollution; if the homogeneous free carbon can be scientifically increased, the subsequent deposition process time can be greatly shortened. Utility Model Content

[0003] Technical problem to be solved: In view of many deficiencies in the prior art, the utility model provides a processing device for a small plate preform, which meets the processing requirements of small plate workpieces and is suitable for laboratory research and development and structural design of carbon material workpieces.

[0004] Technical solution: The utility model discloses a processing device for a small plate preform, the processing device comprising:

[0005] A workbench, the workbench comprising a support frame and corresponding workbench plates and support plates arranged in layers above and below the support frame, the workbench plates being provided with guide grooves along their length direction;

[0006] A movable platform, the movable platform comprises a guide slide slidably arranged along the length direction of the supporting plate, the guide slide is provided with a horizontal movement driving mechanism and a lifting driving mechanism for driving the guide slide to move, the top end of the lifting driving mechanism is transmission-connected to a placement plate slidably connected above the guide groove and drives the placement plate to perform lifting action;

[0007] A spray mechanism, the spray mechanism comprising a spray cabin body provided at one end of the workbench corresponding to the side opening corresponding to the guide groove and a plurality of high-pressure spray heads provided on the spray cabin body, and the high-pressure spray heads are connected to the carbon powder tank through a spray pipe;

[0008] A sealed cabin door, the sealed cabin door comprising a door panel connected to slide up and down along the opening end of the spray cabin body and an opening and closing driving mechanism for driving the door panel to rise and fall;

[0009] A needling mechanism, which is disposed above the workbench and can perform a reciprocating needling action on the processing raw materials placed on the workbench;

[0010] The cutting mechanism is arranged on one side of the needling mechanism and can cut the processing raw materials placed on the table.

[0011] Preferably, the lifting drive mechanism comprises a lifting transmission box fixedly connected to the guide slide and a first lifting drive motor drivingly connected to the lifting transmission box, and a lifting rod is liftingly connected to the lifting transmission box;

[0012] A supporting base plate located below the workbench is arranged at the top end of the lifting rod. The top end of the supporting base plate is fixedly connected to the workbench through four groups of connecting columns, and the connecting columns are slidably connected in the guide grooves.

[0013] Preferably, a limiting block is provided on one side edge of the workbench, and a limiting groove is longitudinally provided inside the limiting block;

[0014] A guide column is arranged on one side of the supporting bottom plate, and the outer end of the guide column is slidably connected in the limiting groove.

[0015] Preferably, the support plate is provided with two guide rails in parallel along its length direction, and a card slot is provided on the bottom surface of the guide slide, and the guide slide is mounted on the guide rails through the card slot;

[0016] The horizontal movement driving mechanism includes a first transmission rack arranged on the support plate in parallel with the guide rail, a travel driving motor is arranged on the guide slide, and a first driving gear meshingly connected with the first transmission rack is arranged at the shaft end of the travel driving motor.

[0017] Preferably, the opening and closing drive mechanism includes a second transmission rack longitudinally arranged at the top end of the door panel and a second lifting drive motor, and the shaft end of the second lifting drive motor is provided with a second drive gear meshingly connected to the second transmission rack.

[0018] Preferably, the acupuncture mechanism includes a supporting back plate and a crank shaft and a first guide block arranged from top to bottom along the supporting back plate, a driving rod is slidably connected in the first guide block, a driving cam is arranged at the top end of the driving rod, and the driving cam is connected by a driving shaft extending from the crank shaft; an acupuncture driving mechanism connected to the crank shaft is arranged on the back side of the supporting back plate.

[0019] Preferably, a needling support plate is provided at the lower end of the driving rod, and a second guide block located below the needling support plate is provided on the surface of the supporting back plate, two connecting rods are slidably connected in the second guide block, the top end of the connecting rod is fixedly connected to the needling support plate through an adjusting nut, and the bottom end of the needling support plate is fixedly connected to the needle plate.

[0020] Preferably, the cutting mechanism comprises a mounting frame, and a guide slide is provided at the top of the mounting frame;

[0021] A lifting connecting rod is arranged in the guide slide, a third transmission rack is arranged along the axial direction of one side of the lifting connecting rod, and a connecting plate is arranged at the lower end of the lifting connecting rod;

[0022] A third lifting drive motor is arranged on the back side of the mounting frame, and a third driving gear meshingly connected with a third transmission rack is arranged on the driving shaft end of the third lifting drive motor;

[0023] The lower end of the connecting plate is rotatably connected to a rotating knife rod, the outer circumference of the rotating knife rod is provided with a spiral groove along its axial direction, and a limiting rod is provided on one side of the mounting frame, and an inner end of the limiting rod is clamped in the spiral groove;

[0024] The lower end of the rotating knife rod is fixedly connected with a knife body.

[0025] Preferably, the knife body has a plurality of cutting blades evenly distributed in the circumferential direction.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] 1. The processing device of the utility model has a compact structure, realizes miniaturization design, reduces floor space, and can reduce noise, which is suitable for laboratory research and development and structural design;

[0028] 2. The device is highly integrated and can realize the functions of needle offset and needle depth adjustment. It also has auxiliary cutting function, increases the closed spraying of adhesive, and can verify the relevance of the type and amount of free carbon to the subsequent deposition process, realizing multiple functions in one;

[0029] 3. The processing device is simple to operate and easy to maintain. The process parameters can be adjusted through intelligent control. In addition to manually assisting the completion of carbon material laying, the PLC system can be used to control the needling frequency, needling depth, needling time, spraying operations, cutting operations and other process flows, thereby improving the degree of automation and production efficiency of the production system, and having repeatability and high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the front three-dimensional structure of the processing device of the utility model;

[0031] Figure 2 for Figure 1 Schematic diagram of the front side of the partial structure of the middle processing device;

[0032] Figure 3 for Figure 1 Schematic diagram of the rear side of the partial structure of the middle processing device;

[0033] Figure 4 for Figure 1 Schematic diagram of the structure of the middle cutting mechanism;

[0034] Figure 5 for Figure 1 Schematic diagram of the front structure of the moving pedestal;

[0035] Figure 6 for Figure 5 Schematic diagram of the rear structure of the moving pedestal.

[0036] Figure numerals: 100, processing device; 1, workbench; 11, support frame; 12, workbench; 13, support tray; 14, guide groove; 15, support top plate; 16, guide rail; 17, first transmission rack; 2, moving platform; 21, guide slide; 22, lifting transmission box; 23, first lifting drive motor; 24, lifting rod; 25, support bottom plate; 26, placement table; 27, connecting column; 28, guide column; 29, limit block; 210, travel drive motor; 211, first drive gear; 3, spray mechanism; 31, spray cabin; 32, high-pressure nozzle; 4, sealing cabin door; 41, door panel; 42, second transmission rack; 43, second lifting drive Motor; 44, second driving gear; 5, needling mechanism; 51, supporting back plate; 52, needling driving mechanism; 53, crank shaft; 54, driving shaft; 55, driving cam; 56, first guide block; 57, driving rod; 58, needling support plate; 59, connecting rod; 510, adjusting nut; 511, second guide block; 512, needling support plate; 513, needle plate; 6, cutting mechanism; 61, mounting frame; 611, guide slide; 62, third lifting driving motor; 63, third driving gear; 64, lifting connecting rod; 641, third transmission rack; 642, connecting disk; 65, rotating knife rod; 651, spiral groove; 66, limiting rod; 67, knife body; 671, cutting blade. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present utility model clearer, the following will be combined with the attached Figures 1 to 6 The technical scheme of the embodiment of the utility model is clearly and completely described as shown. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0038] like Figures 1 to 3 In the illustrated embodiment, the utility model is a processing device for a small plate preform, the processing device 100 includes a workbench 1, a movable stand 2, a spray mechanism 3, a sealed hatch 4, a needling mechanism 5 and a cutting mechanism 6. The workbench 1 includes a support frame 11 and a workbench 12 and a support plate 13 arranged in layers above and below the support frame 11. The workbench 12 is provided with a guide groove 14 along its length. The processing device has a compact structure, realizes a miniaturized design, reduces the floor space, and can reduce noise. It can be directly placed on the laboratory table platform and is suitable for laboratory research and development and structural design.

[0039] like Figure 1 and Figures 5-6 In the illustrated embodiment, the movable platform 2 includes a guide slide 21 slidably arranged along the length direction of the support plate 13, and the guide slide 21 is provided with a horizontal moving drive mechanism and a lifting drive mechanism for driving the guide slide to move. The top of the lifting drive mechanism is transmission-connected to a placement table 26 that is slidably connected above the guide groove 14 and drives the placement table 26 to perform lifting movements. Specifically, the lifting drive mechanism includes a lifting transmission box 22 fixedly connected to the guide slide 21 and a first lifting drive motor 23 transmission-connected to the lifting transmission box 22, and a lifting rod 24 is lifting-connected to the lifting transmission box 22, and the lifting transmission box 22 and the lifting rod 24 adopt a worm gear transmission method to realize the lifting movement of the lifting rod; a support bottom plate 25 located below the workbench 12 is provided at the top of the lifting rod 24, and the top of the support bottom plate 25 is fixedly connected to the workbench 12 through four groups of connecting columns 27, and the connecting columns 27 are connected to the workbench 12. The connecting column 27 is slidably connected in the guide groove 14; a limiting block 29 is arranged on one edge of the working table 12, and a limiting groove is longitudinally arranged in the limiting block 29; a guide column 28 is arranged on one side of the supporting base plate 25, and the outer end of the guide column 28 is slidably connected in the limiting groove. When the lifting rod 24 drives the supporting base plate 25 and the placing table 26 to rise and fall, the guide column 28 can slide along the limiting groove of the limiting block 29, thereby providing stable support for the lifting action of the placing table, thereby realizing the lifting and lowering adjustment of the processing station of the carbon material on the placing table.

[0040] Two guide rails 16 are arranged in parallel along the length direction of the support plate 13, and a card slot is provided on the bottom surface of the guide slide 21, and the guide slide 21 is mounted on the guide rail 16 through the card slot; Figure 5As shown, the guide rails 16 on the support tray 13 include two, and the guide slide 21 is correspondingly slidably connected to the guide rails 16. The horizontal movement drive mechanism includes a first transmission rack 17 arranged on the support tray 13 in parallel with the guide rails 16, and a travel drive motor 210 is arranged on the guide slide 21. The driving shaft end of the travel drive motor 210 is provided with a first drive gear 211 meshingly connected with the first transmission rack 17. The forward and reverse rotation of the travel drive motor 210 can drive the first drive gear 211 to cooperate with the first transmission rack 17 to realize the adjustment of the left and right processing positions of the guide slide and its upper components along the guide rails 16.

[0041] like Figure 1 and Figure 3 In the illustrated embodiment, the spray mechanism 3 includes a spray chamber 31 disposed corresponding to the opening of the side corresponding to the guide groove 14 at one end of the workbench 12 and a plurality of high-pressure nozzles 32 disposed correspondingly on the spray chamber 31, and the high-pressure nozzles 32 are connected to the carbon powder tank through a spray pipe. The spray chamber 31 is located at the opening side and extends out the support top plate 15. The high-pressure nozzles 32 are connected to the carbon powder tank through the spray pipe, and the free carbon powder can be sprayed into the spray chamber through the high-pressure nozzles 32. The sealed cabin door 4 includes a door panel 41 connected to slide up and down along the opening end of the spray cabin body 31 and an opening and closing drive mechanism for driving the door panel 41 to rise and fall. The opening and closing drive mechanism includes a second transmission rack 42 and a second lifting drive motor 43 longitudinally arranged at the top of the door panel 41. The shaft end of the second lifting drive motor 43 is provided with a second driving gear 44 meshingly connected to the second transmission rack 42. The second lifting drive motor can realize the lifting and lowering action of the door panel through the cooperation of the second driving gear and the second transmission rack to realize the opening or closing of the spray cabin body, which is more conducive to the adhesion of free carbon powder.

[0042] like Figures 1-2 In the illustrated embodiment, the acupuncture mechanism 5 is correspondingly arranged above the workbench 12, and the acupuncture mechanism 5 includes a support back plate 51 fixedly connected to the support top plate 15, a crank shaft 53 and a first guide block 56 arranged from top to bottom along the support back plate 51, a driving rod 57 is slidably connected in the first guide block 56, a driving cam 55 is arranged at the top of the driving rod 57, and the driving cam 55 is transmission-connected through a driving shaft 54 ​​extending from the crank shaft 53; an acupuncture driving mechanism 52 transmission-connected to the crank shaft 53 is arranged on the back side of the support back plate 51, and the acupuncture driving mechanism 52 includes a driving motor and a transmission; the acupuncture driving mechanism 52 can drive the driving cam 55 to rotate through the crank shaft 53 and the driving shaft 54 ​​thereon, and then drive the driving rod 57 to move up and down along the first guide block 56, such as the lower end of the driving rod 57 is directly fixedly connected to the acupuncture push plate 512, and the bottom end of the acupuncture push plate 512 is fixedly connected to the needle plate 513, and the acupuncture driving mechanism 52 can drive the acupuncture push plate 512 and the needle plate 513 to perform reciprocating acupuncture action up and down. In a preferred embodiment, if Figure 2In the illustrated embodiment, a needling support plate 58 is provided at the lower end of the driving rod 57, and a second guide block 511 located below the needling support plate 58 is provided on the plate surface of the supporting back plate 51, and two connecting rods 59 are slidably connected in the second guide block 511, and the top end of the connecting rod 59 is connected by an adjusting nut 510, and the bottom end of the connecting rod 59 is fixedly connected with a needling abutment plate 512 and a needle plate 513; specifically, the connecting rod 59 includes two rods, and the upper ends thereof are connected to the needling support plate 58 by adjusting nuts 510 respectively, and the height of the connecting rod and the needling abutment plate at the lower end thereof can be adjusted by adjusting the nuts 510 to achieve needle depth adjustment, and a plurality of needles can be connected to the needling abutment plate according to needs, and the spacing between the needles can be set according to needs, and the needling mechanism 5 cooperates with the horizontal movement of the placement table 26 to achieve staggered needle adjustment; the needling mechanism 5 can perform reciprocating needling action on the processed raw materials on the placement table 26.

[0043] like Figures 3-4 In the illustrated embodiment, the cutting mechanism 6 is correspondingly arranged on one side of the needling mechanism 5, and the cutting mechanism 6 includes a mounting frame 61 fixedly connected to the supporting top plate 15, and a guide slide 611 is arranged at the top of the mounting frame 61; a lifting connecting rod 64 is arranged in the guide slide 611, and a third transmission rack 641 is arranged on one side of the lifting connecting rod 64 along its axial direction, and a connecting plate 642 is arranged at the lower end of the lifting connecting rod 64; a third lifting drive motor 62 is arranged on the back side of the mounting frame 61, and a third driving gear 63 meshingly connected to the third transmission rack 641 is arranged at the driving shaft end of the third lifting drive motor 62, and the third lifting drive motor can realize the lifting action of the lifting connecting rod through the cooperation of the third driving gear and the third transmission rack. A rotary cutter bar 65 is rotatably connected to the lower end of the connecting disk 642, and a spiral groove 651 is arranged on the outer circumference of the rotary cutter bar 65 along its axial direction. A limit rod 66 is arranged on one side of the mounting frame 61, and one inner end of the limit rod 66 is clamped in the spiral groove 651. A cutter body 67 is fixedly connected to the lower end of the rotary cutter bar 65, and a plurality of cutting blades 671 are evenly distributed in the circumferential direction of the cutter body 67. During operation, when the rotary cutter bar 65 is lifted and lowered along the connecting disk 642, the limit rod 66 cooperates with the spiral groove 651, so that the rotary cutter bar can rotate forward or reverse along the connecting disk, thereby driving the cutter body 67 to rotate and cut the processing material placed on the table 26.

[0044] The working principle or working method of the utility model:

[0045] During operation, the travel drive motor 210 cooperates with the first transmission rack 17 through the first drive gear 211 to transfer the placement plate 26 to the bottom of the needling mechanism 5, and the processed raw materials are placed on the placement plate 26. The processing height of the placement plate 26 can be adjusted by the lifting drive mechanism, and then the needling mechanism 5 performs the needling action. The working principle of the needling mechanism 5 is that the needling drive mechanism 52 drives the driving cam 55, and the driving cam 55 drives the driving rod 57 to achieve the purpose of reciprocating drive. The driving rod 57 is connected with the connecting rod 59 and the needle plate 513. The needle plate 513 is equipped with a needle, and the needle has hook teeth. When the needling drive mechanism 52 drives the needle plate 513 to move, it will synchronously drive the needle to follow. During the needling operation, the product to be processed is flattened on the placement plate 26, and the needling drive mechanism drives the needle to move back. The needling hook teeth will carry the product fiber to make the layers hooked, and the operation is ended after the specified number of processes is reached. After the needling operation is completed, the horizontal moving drive mechanism drives the placing table 26 to carry the intermediate product into the spraying chamber 31 for spraying of free carbon powder. A high-pressure nozzle 32 is installed above the spraying chamber 31 and connected to the spraying pipe and the carbon powder tank. The carbon powder tank is pressurized by an air pump. Before the spraying operation, the sealing door 4 must be closed to make the spraying chamber completely sealed, and the pressurized carbon powder is sprayed on the surface of the processed product; after the spraying operation is completed, the mobile seat 2 returns the intermediate product to the needling area again, repeats the stacking cycle needling action, and after the intermediate product is processed to the required thickness, the mobile seat 2 sends the intermediate product to the cutting area for cutting. The cutting mechanism 6 is driven by the third lifting drive motor 62. When the third lifting drive motor 62 drives the third transmission rack 641 to press down, the spiral groove 651 causes the knife body to rotate, and the product is cut by the rotation and downward pressure of the rotating knife rod. After the cutting is completed, the product is removed from the machine to complete the operation task.

[0046] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A processing device for a small plate preform, characterized in that: The processing device (100) comprises: A workbench (1), the workbench (1) comprising a support frame (11) and a workbench plate (12) and a support plate (13) arranged in layers above and below the support frame (11) corresponding to each other, the workbench plate (12) being provided with a guide groove (14) along its length direction; A movable platform (2), the movable platform (2) comprising a guide slide (21) slidably arranged along the length direction of the support plate (13), the guide slide (21) being provided with a horizontal movement drive mechanism and a lifting drive mechanism for driving the guide slide to move, the top end of the lifting drive mechanism being transmission-connected to a placement platform (26) slidably connected above the guide groove (14) and driving the placement platform (26) to perform a lifting action; A spray mechanism (3), the spray mechanism (3) comprising a spray chamber (31) disposed at one end of a workbench (12) corresponding to a side opening corresponding to the guide groove (14), and a plurality of high-pressure spray heads (32) disposed correspondingly on the spray chamber (31), and the high-pressure spray heads (32) are connected to a carbon powder tank via a spray pipe; A sealed cabin door (4), the sealed cabin door (4) comprising a door panel (41) connected to slide up and down along the opening end of the spray cabin body (31) and an opening and closing driving mechanism for driving the door panel (41) to rise and fall; A needling mechanism (5), the needling mechanism (5) being arranged above the workbench (12) and capable of reciprocatingly needling the raw materials placed on the workbench (26); A cutting mechanism (6) is arranged on one side of the acupuncture mechanism (5) and can cut the processed raw materials placed on the table (26).

2. The processing device for small plate preform according to claim 1, characterized in that: The lifting drive mechanism comprises a lifting transmission box (22) fixedly connected to the guide slide (21) and a first lifting drive motor (23) drivingly connected to the lifting transmission box (22), and a lifting rod (24) is liftingly connected to the lifting transmission box (22); A supporting base plate (25) located below the workbench (12) is arranged at the top end of the lifting rod (24); the top end of the supporting base plate (25) is fixedly connected to the workbench (12) via four groups of connecting columns (27); and the connecting columns (27) are slidably connected in the guide groove (14).

3. The processing device for small plate preform according to claim 2, characterized in that: A limiting block (29) is provided on one side edge of the workbench (12), and a limiting groove is longitudinally provided inside the limiting block (29); A guide column (28) is provided on one side of the supporting bottom plate (25), and the outer end of the guide column (28) is slidably connected in the limiting groove.

4. The processing device for a small plate preform according to claim 1, characterized in that: The support plate (13) is provided with two guide rails (16) in parallel along its length direction, and a clamping groove is provided on the bottom surface of the guide slide (21), and the guide slide (21) is clamped on the guide rails (16) through the clamping groove; The horizontal movement drive mechanism comprises a first transmission rack (17) arranged on the support plate (13) in parallel with the guide rail (16); a travel drive motor (210) is arranged on the guide slide (21); and a first drive gear (211) meshingly connected with the first transmission rack (17) is arranged at the shaft end of the travel drive motor (210).

5. The processing device for small plate preform according to claim 1, characterized in that: The opening and closing drive mechanism comprises a second transmission rack (42) longitudinally arranged at the top end of the door panel (41) and a second lifting drive motor (43); a second driving gear (44) meshingly connected to the second transmission rack (42) is arranged at the shaft end of the second lifting drive motor (43).

6. The processing device for small plate preform according to claim 1, characterized in that: The acupuncture mechanism (5) comprises a supporting back plate (51), a crank shaft (53) and a first guide block (56) arranged from top to bottom along the supporting back plate (51); a driving rod (57) is slidably connected inside the first guide block (56); a driving cam (55) is arranged at the top end of the driving rod (57); the driving cam (55) is connected in transmission through a driving shaft (54) extending from the crank shaft (53); an acupuncture driving mechanism (52) connected in transmission to the crank shaft (53) is arranged on the back side of the supporting back plate (51).

7. The processing device for a small plate preform according to claim 6, characterized in that: A needling support plate (58) is arranged at the lower end of the driving rod (57); a second guide block (511) located below the needling support plate (58) is arranged on the plate surface of the supporting back plate (51); two connecting rods (59) are slidably connected in the second guide block (511); the top end of the connecting rod (59) is fixedly connected to a needling support plate (512) through an adjusting nut (510); and the bottom end of the needling support plate (512) is fixedly connected to a needle plate (513).

8. The processing device for a small plate preform according to claim 1, characterized in that: The cutting mechanism (6) comprises a mounting frame (61), and a guide opening (611) is provided at the top of the mounting frame (61); A lifting connecting rod (64) is arranged in the guide sliding opening (611), a third transmission rack (641) is arranged on one side of the lifting connecting rod (64) along its axial direction, and a connecting plate (642) is arranged at the lower end of the lifting connecting rod (64); A third lifting drive motor (62) is arranged on the back side of the installation frame (61); a third driving gear (63) meshingly connected to a third transmission rack (641) is arranged at the driving shaft end of the third lifting drive motor (62); The lower end of the connecting disk (642) is rotatably connected to a rotating knife rod (65), the outer periphery of the rotating knife rod (65) is provided with a spiral groove (651) along its axial direction, and a limiting rod (66) is provided on one side of the mounting frame (61), and an inner end of the limiting rod (66) is clamped in the spiral groove (651); The lower end of the rotating knife rod (65) is fixedly connected to a knife body (67).

9. The processing device for a small plate preform according to claim 8, characterized in that: The knife body (67) is provided with a plurality of cutting blades (671) evenly distributed in the circumferential direction.

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