High-precision baking powder extruding and cutting equipment

Abstract

The utility model discloses high-precision baking powder extruding and cutting equipment which comprises a machine frame and a working table, universal wheels are installed at the bottom of the machine frame, the working table is installed on the top of the machine frame, a conveying mechanism is installed on the working table, a cutting mechanism is arranged above the conveying mechanism, an extruding mechanism is arranged on one side of the cutting mechanism, and the extruding mechanism is arranged on the other side of the cutting mechanism. A limiting mechanism is installed on the other side of the cutting mechanism, and a material supporting mechanism is arranged below the limiting mechanism. According to the powder cake cutting device, the limiting mechanism and the material supporting mechanism are arranged, under the limiting action of the first limiting plate, the second limiting plate and the material supporting plate, the powder cake linearly moves along the material supporting plate, and the situation that the powder cake deforms and bends under the action of the gravity of the powder cake, detection errors of the powder cake are caused, and the cutting precision of the powder cake is affected is avoided; the length of the pressed powder can be accurately detected through the signal change of the photoelectric sensor, so that the length consistency of the cut pressed powder is ensured, and the cutting precision of the pressed powder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cosmetics, in particular to a high-precision baking powder extrusion and cutting device. Background Technique

[0002] Baking powder is a common cosmetic, which is mainly made by baking kaolin and other materials. The powder of baking powder is delicate and has less irritation to the skin, making it suitable for sensitive skin types. In the production process of existing baking powder, first, the powder raw materials need to be extracted (for example: the powder made from Lawsonia inermis pigment. In the production process, the Lawsonia inermis pollen is enzymolyzed to obtain the cell tissue fluid of Lawsonia inermis, the cell tissue fluid is subjected to microwave cell wall breaking to obtain the Lawsonia inermis pigment solution, and the solution is concentrated by vacuum flash evaporation and other extraction processes to obtain the Lawsonia inermis extract, and the powder raw materials are made from the extract). After extracting the powder raw materials, they are extruded and then cut into the required length, and then the obtained powder raw materials are pressed into powder cakes. The semi-finished products after powder pressing are baked into finished powder cakes through an oven.

[0003] In the current baking powder extrusion and cutting device, when the powder cake is extruded to a certain length, a cutter is directly used for cutting. Although this cutting method is relatively convenient, when the extruded powder cake is long, it is easy to bend, resulting in poor length consistency of the cut powder cake and affecting the cutting accuracy of the powder cake. In view of the above defects, it is necessary to design a high-precision baking powder extrusion and cutting device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-precision baking powder extrusion and cutting device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-precision baking powder extrusion and cutting device, including a frame and a workbench. Universal wheels are installed at the bottom of the frame, a workbench is installed at the top of the frame, a conveying mechanism is installed on the workbench, a cutting mechanism is arranged above the conveying mechanism, an extrusion mechanism is arranged on one side of the cutting mechanism, a limiting mechanism is installed on the other side of the cutting mechanism, and a material supporting mechanism is arranged below the limiting mechanism.

[0006] Preferably, the conveying mechanism includes side plates, a first motor, and a conveying belt. A driving roller is rotatably installed at one end of the side plate, a driven pulley is installed at the shaft end of the driving roller, the driven pulley is connected to the driving pulley through a transmission belt, the driving pulley is installed at the output end of the first motor, the first motor is installed on the bottom of the side plate through a first motor mounting plate, the driving roller is connected to the driven roller through the conveying belt, and the driven roller is rotatably installed at the other end of the side plate.

[0007] Preferably, the cutting mechanism includes a photoelectric sensor, a cutting knife, and a first air cylinder for driving the cutting knife to move up and down. The photoelectric sensor includes a photoelectric sensor receiving end and a photoelectric sensor transmitting end. The first air cylinder is installed on a cylinder fixing plate, and the cylinder fixing plate is installed on the top of the top plate.

[0008] Preferably, a first sensor bracket and a second sensor bracket are respectively installed on both sides of the top plate. The photoelectric sensor receiving end is installed on the first sensor bracket, and the photoelectric sensor transmitting end is installed on the second sensor bracket. A hollow groove is formed in the middle of the top plate. The piston rod of the first air cylinder passes through the hollow groove and is connected to a cutting knife fixing plate, and a cutting knife is installed at the bottom of the cutting knife fixing plate.

[0009] Preferably, the extrusion mechanism includes a material barrel, a material pressing component, and a spiral feeding component. The material pressing component is installed above the material barrel, and the spiral feeding component communicated with the material barrel is arranged at the bottom of the material barrel.

[0010] Preferably, the material pressing component includes a material pressing plate. The material pressing plate is fixedly connected to the piston rod of the second air cylinder. The second air cylinder is installed on the top of one end of a moving plate. Two spaced sliders are installed at the bottom of the other end of the moving plate. The two sliders are respectively slidably arranged on two slide rails. The two slide rails are respectively installed on a support plate. The two ends of the support plate are respectively installed on two support blocks. The tops of the two support blocks are connected with a first air cylinder mounting plate. A third air cylinder is installed on the first air cylinder mounting plate. The piston rod of the third air cylinder is fixedly connected to a connecting plate through a floating joint, and the connecting plate is installed on the moving plate.

[0011] Preferably, the spiral feeding component includes a spiral feeding pipe, a spiral shaft, spiral blades, and a second motor. The middle of the spiral feeding pipe is communicated with the bottom of the material barrel. A bearing seat is installed at one end of the spiral feeding pipe. A spiral blade is installed at one end of the spiral shaft. The other end of the spiral shaft is fixedly connected to the output end of the second motor through a coupling. The other end of the spiral feeding pipe is detachably installed with a die core. A flange plate is installed at one end of the die core. A hollow groove is formed in the middle of the die core.

[0012] Preferably, the limiting mechanism includes a bidirectional lead screw, a first limiting plate, and a second limiting plate. Screw nuts are sleeved on the positive and negative threaded sections of the bidirectional lead screw. The two screw nuts are respectively installed on the first limiting plate and the second limiting plate. First guide sleeves are installed on both the first limiting plate and the second limiting plate. The first guide sleeves are sleeved on a first guide rod. The two ends of the first guide rod are installed on a lead screw mounting seat. One end of the bidirectional lead screw is fixedly connected to a hand wheel.

[0013] Preferably, the blank holding mechanism includes a blank holding plate which is installed at one end of the moving block. The moving block is fixedly connected to the piston rod of the fourth cylinder. The fourth cylinder is installed on the second cylinder mounting plate. A second guide rod is installed on the moving block, and a second guide sleeve is sleeved on the second guide rod. The second guide sleeve is installed on the second cylinder mounting plate.

[0014] Compared with the prior art, the technical solution provided by the present utility model has at least the following technical effects or advantages:

[0015] First, the present utility model is provided with a limiting mechanism and a blank holding mechanism. Under the limiting action of the first limiting plate, the second limiting plate and the blank holding plate, the powder cake moves linearly along the blank holding plate, avoiding the deformation and bending of the powder cake under the action of its own gravity, resulting in detection errors of the powder cake and affecting the cutting accuracy of the powder cake. And an optoelectronic sensor is provided. Through the signal change of the optoelectronic sensor, the length of the powder cake can be accurately detected, thereby ensuring the consistency of the length of the cut powder cake and improving the cutting accuracy of the powder cake.

[0016] Second, the present utility model is provided with a limiting mechanism. By rotating the handwheel, the bidirectional lead screw is driven to rotate. The bidirectional lead screw drives the two lead screw nuts to move. The lead screw nuts drive the first limiting plate and the second limiting plate to move, so that the first limiting plate and the second limiting plate move towards or away from each other, thereby adjusting the distance between the first limiting plate and the second limiting plate, enabling the first limiting plate and the second limiting plate to adapt to different shapes of powder materials and improving the applicable range of the extrusion cutting equipment.

[0017] Third, in the present utility model, a die core is detachably installed on the spiral feeding pipe. A hollow groove is formed in the middle of the die core. The hollow groove can be designed into various shapes such as corresponding circles, squares, etc. according to the shape of the required powder material. And the die core is detachably installed by screwing a bolt through the flange plate and the spiral feeding pipe. When different shapes of powder materials need to be extruded, only the corresponding shaped die core needs to be replaced to achieve this. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0019] Figure 1 is a perspective view of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the present utility model;

[0021] Figure 3 is Figure 1 the structural schematic diagram of part A in

[0022] Figure 4Schematic diagram of the internal structure of the extrusion mechanism in the present utility model;

[0023] Figure 5 is Figure 2 schematic diagram of the structure at position B in

[0024] In the attached drawings:

[0025] 1. Frame; 2. Workbench; 3. Universal wheel; 4. Conveying mechanism; 401. Side plate; 402. Driven pulley; 403. Transmission belt; 404. Driving pulley; 405. First motor; 406. First motor mounting plate; 407. Conveyor belt; 5. Cutting mechanism; 501. Cutter; 502. First cylinder; 503. Cylinder fixing plate; 504. Top plate; 505. First sensor bracket; 506. Second sensor bracket; 507. Photoelectric sensor receiving end; 508. Photoelectric sensor transmitting end; 509. Support column; 510. Cutter fixing plate; 6. Extrusion mechanism; 601. Hopper; 602. Pressure plate; 603. Second cylinder; 604. Moving plate; 605. Slide block; 606. Slide rail; 607. Support plate; 608. Support board; 609. First cylinder mounting plate; 610. Third cylinder; 611. Floating joint; 612. Connecting plate; 613. Screw feeding pipe; 614. Bearing seat; 615. Screw shaft; 616. Screw blade; 617. Coupling; 618. Second motor; 619. Second motor mounting plate; 620. Die core; 621. Flange; 622. Hollow groove; 7. Limiting mechanism; 701. Bidirectional lead screw; 702. Lead screw mounting seat; 703. Lead screw nut; 704. First limiting plate; 705. Second limiting plate; 706. First guide sleeve; 707. First guide rod; 708. Handwheel; 8. Material supporting mechanism; 801. Material supporting plate; 802. Moving block; 803. Fourth cylinder; 804. Second cylinder mounting plate. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5As shown in the figure, the present utility model provides a technical solution: a high-precision baking powder extrusion and cutting device, which includes a frame 1 and a workbench 2. Universal wheels 3 are installed at the bottom of the frame 1, and the workbench 2 is installed at the top of the frame 1. A conveying mechanism 4 is installed on the workbench 2. A cutting mechanism 5 is arranged above the conveying mechanism 4. An extrusion mechanism 6 is arranged on one side of the cutting mechanism 5. A limiting mechanism 7 is installed on the other side of the cutting mechanism 5. A material supporting mechanism 8 is arranged below the limiting mechanism 7.

[0028] The conveying mechanism 4 in this embodiment includes side plates 401, a first motor 405 and a conveying belt 407. There are two side plates 401, and the two side plates 401 are installed on the workbench 2 in parallel at intervals. One end of the side plate 401 is rotatably installed with a driving roller, and a driven pulley 402 is installed at the shaft end of the driving roller. The driven pulley 402 is in transmission connection with a driving pulley 404 through a transmission belt 403. The driving pulley 404 is installed at the output end of the first motor 405. The first motor 405 is installed at the bottom of the side plate 401 through a first motor mounting plate 406. The driving roller is in transmission connection with a driven roller through the conveying belt 407, and the driven roller is rotatably installed at the other end of the side plate 401.

[0029] The cutting mechanism 5 in this embodiment includes a photoelectric sensor, a cutter 501 and a first cylinder 502 for driving the cutter 501 to move up and down. The photoelectric sensor includes a photoelectric sensor receiving end 507 and a photoelectric sensor transmitting end 508. The first cylinder 502 is installed on a cylinder fixing plate 503, and the cylinder fixing plate 503 is installed at the top of a top plate 504. First sensor brackets 505 and second sensor brackets 506 are respectively installed on both sides of the top plate 504. The photoelectric sensor receiving end 507 is installed on the first sensor bracket 505, and the photoelectric sensor transmitting end 508 is installed on the second sensor bracket 506. A hollow groove is formed in the middle of the top plate 504. The top plate 504 is installed on the workbench 2 through a support column 509. The piston rod of the first cylinder 502 passes through the hollow groove and is connected to a cutter fixing plate 510. The cutter 501 is installed at the bottom of the cutter fixing plate 510. The photoelectric sensor is electrically connected to a controller, and the controller is respectively electrically connected to the first motor 405, the first cylinder 502, a second cylinder 603, a third cylinder 610, a second motor 618 and a fourth cylinder 803.

[0030] The extrusion mechanism 6 in this embodiment includes a material barrel 601, a material pressing component and a spiral feeding component. A material pressing component is installed above the material barrel 601, and a spiral feeding component communicated with the material barrel 601 is arranged at the bottom of the material barrel 601.

[0031] The pressing assembly in this embodiment includes a pressing plate 602, which is a circular structure. The pressing plate 602 is fixedly connected to the piston rod of the second cylinder 603. The second cylinder 603 is installed on the top of one end of the moving plate 604. Two sliders 605 are installed at intervals on the bottom of the other end of the moving plate 604. The two sliders 605 are respectively slidably set on two slide rails 606. The two slide rails 606 are respectively installed on a support plate 607. The support plate 607 is a U-shaped structure. The two ends of the support plate 607 are respectively installed on two support plates 608. The support plate 608 is an L-shaped structure. The tops of the two support plates 608 are connected to the first cylinder mounting plate 609. The third cylinder 610 is installed on the first cylinder mounting plate 609. The piston rod of the third cylinder 610 is fixedly connected to the connecting plate 612 through a floating joint 611. The connecting plate 612 is installed on the moving plate 604.

[0032] The spiral feeding assembly in this embodiment includes a spiral feeding tube 613, a spiral shaft 615, a spiral blade 616 and a second motor 618. The middle part of the spiral feeding tube 613 is connected to the bottom of the barrel 601. A bearing seat 614 is installed at one end of the spiral feeding tube 613. The spiral shaft 615 is installed on the bearing seat 614 through a bearing. A spiral blade 616 is installed at one end of the spiral shaft 615. The spiral blade 616 is located in the spiral feeding tube 613. The other end of the spiral shaft 615 is fixedly connected to the output end of the second motor 618 through a coupling 617. The second The motor 618 is installed on the workbench 2 through the second motor mounting plate 619. The other end of the spiral feeding tube 613 is detachably mounted with a mold core 620. A flange 621 is mounted at one end of the mold core 620. A hollow groove 622 is opened in the middle of the mold core 620. The hollow groove 622 can be designed into various shapes such as round and square according to the required shape of the powder, and is screwed to the spiral feeding tube 613 through bolts passing through the flange 621 to realize the detachable installation of the mold core 620. When it is necessary to extrude powder of different shapes, it can be achieved by simply replacing the mold core 7 of the corresponding shape.

[0033] The limiting mechanism 7 in this embodiment includes a bidirectional lead screw 701, a first limiting plate 704 and a second limiting plate 705. The bidirectional lead screw 701 is installed at the bottom of the top plate 504 through a lead screw mounting seat 702. Lead screw nuts 703 are sleeved on the positive and negative threaded sections of the bidirectional lead screw 701. The two lead screw nuts 703 are respectively installed on the first limiting plate 704 and the second limiting plate 705. First guide sleeves 706 are installed on both the first limiting plate 704 and the second limiting plate 705. The first guide sleeves 706 are sleeved on first guide rods 707. The two ends of the first guide rods 707 are installed on the lead screw mounting seat 702. One end of the bidirectional lead screw 701 is fixedly connected to a handwheel 708. By rotating the handwheel 708, the bidirectional lead screw 701 is driven to rotate. The bidirectional lead screw 701 drives the two lead screw nuts 703 to move. The lead screw nuts 703 drive the first limiting plate 704 and the second limiting plate 705 to move, so that the first limiting plate 704 and the second limiting plate 705 move towards or away from each other, thereby adjusting the distance between the first limiting plate 704 and the second limiting plate 705, enabling the first limiting plate 704 and the second limiting plate 705 to adapt to powders of different shapes and improving the application range of the extrusion cutting equipment.

[0034] The material supporting mechanism 8 in this embodiment includes a material supporting plate 801. The material supporting plate 801 is installed at one end of a moving block 802. The moving block 802 is fixedly connected to the piston rod of a fourth cylinder 803. The fourth cylinder 803 is installed on a second cylinder mounting plate 804. A second guide rod 805 is installed on the moving block 802. A second guide sleeve 806 is sleeved on the second guide rod 805. The second guide sleeve 806 is installed on the second cylinder mounting plate 804. The second cylinder mounting plate 804 is installed on a support column 509.

[0035] Working principle of the utility model: During use, pour the powder material into the material barrel 601. The third cylinder 610 operates to push the connecting plate 612 to move, and the moving plate 604 also moves accordingly, thereby driving the first cylinder 603 and the pressure plate 602 to move above the material barrel 601. The second cylinder 603 operates to push the pressure plate 602 to move downward. The pressure plate 602 extrudes the powder material in the material barrel 601 and extrudes the powder material in the material barrel 601 into the spiral feeding pipe 613. The second motor 618 operates to drive the spiral shaft 615 to rotate, and the spiral shaft 615 drives the spiral blades 616 to rotate, so that the powder material in the spiral feeding pipe 613 can enter the mold core 620 along the conveying direction of the spiral blades 616. The powder material enters the hollow groove 622 of the mold core 620 from the spiral feeding pipe 613 and is extruded from the hollow groove 622. During the extrusion process, the powder material is extruded into a powder cake. Under the limiting action of the first limiting plate 704, the second limiting plate 705 and the material supporting plate 801, the powder cake moves linearly along the material supporting plate 801, avoiding the deformation and bending of the powder cake under the action of its own gravity, resulting in detection errors of the powder cake and affecting the cutting accuracy of the powder cake. When the powder cake is extruded to a certain length, the infrared ray emitted by the emitting end 508 of the photoelectric sensor is blocked by the powder cake, so that the receiving end 507 of the photoelectric sensor cannot receive the infrared ray. The receiving end 507 of the photoelectric sensor feeds back the signal to the controller, and the controller controls the second motor 618 to stop and controls the first cylinder 502 to operate. The first cylinder 502 pushes the cutter fixing plate 510 to move downward, so that the cutter 501 cuts the powder cake. After the cutting is completed, the fourth cylinder 803 operates to drive the moving block 802 to move, thereby driving the material supporting plate 801 to move, so that the powder cake on the material supporting plate 801 falls onto the conveying belt 407. The first motor 405 operates to drive the driving pulley 404 to rotate, and drives the driven pulley 402 to rotate under the transmission action of the transmission belt 403, and the driving roller also rotates accordingly, thereby driving the conveying belt 407 and the powder cake to move to the next process.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision baking powder extrusion and cutting device, characterized in that: The invention comprises a frame (1) and a workbench (2), wherein a universal wheel (3) is installed at the bottom of the frame (1), the workbench (2) is installed at the top of the frame (1), a conveying mechanism (4) is installed on the workbench (2), a cutting mechanism (5) is arranged above the conveying mechanism (4), a pressing mechanism (6) is arranged on one side of the cutting mechanism (5), a limiting mechanism (7) is installed on the other side of the cutting mechanism (5), and a supporting mechanism (8) is arranged below the limiting mechanism (7).

2. The high-precision baking powder extrusion and cutting equipment according to claim 1, characterized in that: The conveying mechanism (4) comprises a side plate (401), a first motor (405) and a conveying belt (407); a driving roller is rotatably mounted on one end of the side plate (401); a driven pulley (402) is mounted on the shaft end of the driving roller; the driven pulley (402) is transmission-connected to the driving pulley (404) via a transmission belt (403); the driving pulley (404) is mounted on the output end of the first motor (405); the first motor (405) is mounted on the bottom of the side plate (401) via a first motor mounting plate (406); the driving roller is transmission-connected to the driven roller via a conveying belt (407); and the driven roller is rotatably mounted on the other end of the side plate (401).

3. The high-precision baking powder extrusion and cutting equipment according to claim 1, characterized in that: The cutting mechanism (5) comprises a photoelectric sensor, a cutter (501) and a first cylinder (502) for driving the cutter (501) to move up and down, the photoelectric sensor comprises a photoelectric sensor receiving end (507) and a photoelectric sensor transmitting end (508), the first cylinder (502) is mounted on a cylinder fixing plate (503), and the cylinder fixing plate (503) is mounted on the top of a top plate (504).

4. The high-precision baking powder extrusion and cutting device according to claim 3, characterized in that: A first sensor bracket (505) and a second sensor bracket (506) are respectively installed on both sides of the top plate (504); a photoelectric sensor receiving end (507) is installed on the first sensor bracket (505); a photoelectric sensor transmitting end (508) is installed on the second sensor bracket (506); a hollow groove is opened in the middle of the top plate (504); a piston rod of the first cylinder (502) passes through the hollow groove and is connected to a cutter fixing plate (510); a cutter (501) is installed at the bottom of the cutter fixing plate (510).

5. The high-precision baking powder extrusion and cutting device according to claim 1, characterized in that: The extrusion mechanism (6) comprises a material barrel (601), a material pressing assembly and a spiral feeding assembly. The material pressing assembly is installed above the material barrel (601), and the spiral feeding assembly connected to the material barrel (601) is arranged at the bottom of the material barrel (601).

6. The high-precision baking powder extrusion and cutting device according to claim 5, characterized in that: The material pressing assembly comprises a material pressing plate (602), the material pressing plate (602) is fixedly connected to the piston rod of the second cylinder (603), the second cylinder (603) is mounted on the top of one end of the movable plate (604), and two sliders (605) are installed at intervals at the bottom of the other end of the movable plate (604), the two sliders (605) are respectively slidably set on two slide rails (606), the two slide rails (606) are respectively mounted on a support plate (607), the two ends of the support plate (607) are respectively mounted on two support plates (608), the tops of the two support plates (608) are connected to a first cylinder mounting plate (609), a third cylinder (610) is mounted on the first cylinder mounting plate (609), the piston rod of the third cylinder (610) is fixedly connected to a connecting plate (612) via a floating joint (611), and the connecting plate (612) is mounted on the movable plate (604).

7. The high-precision baking powder extrusion and cutting device according to claim 5, characterized in that: The spiral feeding assembly comprises a spiral feeding tube (613), a spiral shaft (615), a spiral blade (616) and a second motor (618); the middle part of the spiral feeding tube (613) is connected to the bottom of the barrel (601); a bearing seat (614) is installed at one end of the spiral feeding tube (613); a spiral blade (616) is installed at one end of the spiral shaft (615); the other end of the spiral shaft (615) is fixedly connected to the output end of the second motor (618) via a coupling (617); a mold core (620) is detachably installed at the other end of the spiral feeding tube (613); a flange (621) is installed at one end of the mold core (620); and a hollow groove (622) is opened in the middle of the mold core (620).

8. The high-precision baking powder extrusion and cutting device according to claim 1, characterized in that: The limiting mechanism (7) comprises a bidirectional screw (701), a first limiting plate (704) and a second limiting plate (705); screw nuts (703) are sleeved on the forward and reverse threaded sections of the bidirectional screw (701); the two screw nuts (703) are respectively mounted on the first limiting plate (704) and the second limiting plate (705); the first limiting plate (704) and the second limiting plate (705) are both mounted with a first guide sleeve (706); the first guide sleeve (706) is sleeved on a first guide rod (707); both ends of the first guide rod (707) are mounted on a screw mounting seat (702); and one end of the bidirectional screw (701) is fixedly connected to a hand wheel (708).

9. The high-precision baking powder extrusion and cutting device according to claim 1, characterized in that: The material supporting mechanism (8) comprises a material supporting plate (801), the material supporting plate (801) is mounted on one end of a moving block (802), the moving block (802) is fixedly connected to the piston rod of a fourth cylinder (803), the fourth cylinder (803) is mounted on a second cylinder mounting plate (804), a second guide rod (805) is mounted on the moving block (802), a second guide sleeve (806) is mounted on the second guide rod (805), and the second guide sleeve (806) is mounted on the second cylinder mounting plate (804).

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