Fine auxiliary material feeding and discharging device and method for cigarette production

Abstract

The invention discloses a fine auxiliary material feeding and discharging device and method for cigarette production, and the device comprises a full tray storage rack which is used for storing auxiliary material trays and is arranged on a bottom plate; the empty tray storage rack is used for storing empty auxiliary material trays, and the empty tray storage rack is arranged on the bottom plate; the auxiliary material tray moving device is located below the full material tray storage rack, and the auxiliary material tray moving device is driven by a driving mechanism so that the auxiliary material tray moving device can do reciprocating motion at the bottoms of the full material tray storage rack and the empty tray storage rack; the auxiliary material grabbing mechanism is used for grabbing auxiliary materials in an auxiliary material disc located on the auxiliary material disc moving device, and the auxiliary material grabbing mechanism is arranged on the bottom plate and located between the full material disc storage rack and the empty disc storage rack; and the discharging conveying device is used for conveying the auxiliary materials grabbed by the auxiliary material grabbing mechanism. In this way, the automatic feeding and discharging process of the auxiliary materials is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of material blanking, and in particular to a device and method for loading and unloading fine auxiliary materials for cigarette production. Background Art

[0002] In the cigarette production process, the loading and unloading of materials is an extremely important link, which is directly related to production efficiency, product quality and production stability. With the continuous development of cigarette production technology and the increasing requirements for product quality, more refined requirements are put forward for the loading and unloading operations of various materials. In particular, the application of small-sized auxiliary materials such as filter rod additives and popping beads in cigarette production is becoming more and more extensive. The efficient and accurate loading and unloading of these small-sized auxiliary materials has become a key problem that needs to be solved urgently. However, in the current production process of factories, there is still a general lack of refined loading and unloading mechanisms for the loading and unloading of these small-sized auxiliary materials. The traditional manual loading and unloading method is not only inefficient and prone to human errors, but also difficult to meet the needs of large-scale production. In view of this, the present invention provides a fine auxiliary material loading and unloading device and method for cigarette production. Summary of the Invention

[0003] The object of the present invention is to provide a device and method for loading and unloading fine auxiliary materials for cigarette production, so as to realize the automatic loading and unloading process of auxiliary materials and improve production efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A device for loading and unloading fine auxiliary materials for cigarette production, comprising:

[0006] A full tray storage rack is used to store auxiliary material trays and is arranged on the bottom plate;

[0007] An empty tray storage rack is used to store empty auxiliary material trays, and the empty tray storage rack is arranged on the bottom plate;

[0008] A supplementary material tray moving device, the supplementary material tray moving device is located below the full material tray storage rack, and the supplementary material tray moving device is driven by a driving mechanism so that the supplementary material tray moving device can reciprocate at the bottom of both the full material tray storage rack and the empty tray storage rack;

[0009] An auxiliary material grabbing mechanism is used to grab auxiliary materials from the auxiliary material tray on the auxiliary material tray moving device, and the auxiliary material grabbing mechanism is arranged on the bottom plate and is located between the full tray storage rack and the empty tray storage rack;

[0010] The material unloading and conveying device is used to convey the auxiliary materials grasped by the auxiliary material grasping mechanism. The material unloading and conveying device is arranged on one side of the bottom plate and close to the auxiliary material grasping mechanism.

[0011] Furthermore, the full material tray storage rack includes a first table top, a first enclosure, a blocking mechanism and a first table leg. The first table top is arranged on the bottom plate through the first table leg. The first table top is provided with a first through hole for the auxiliary material tray to pass through. The first enclosure is provided around the first through hole. A blocking mechanism for preventing the auxiliary material tray from falling is provided on the outside of the first through hole.

[0012] Furthermore, the blocking mechanism includes a first cylinder and a block, the push-out end of the first cylinder is provided with a block, and the side of the auxiliary material tray is provided with a groove for the block to extend into.

[0013] Furthermore, the auxiliary material grabbing mechanism includes a cross linear module, a pneumatic finger cylinder and a splint. The cross linear module is arranged on the base plate through a support. A pneumatic finger cylinder is arranged on the slide of the cross linear module. Splints are arranged on the two clamping ends of the pneumatic finger cylinder. The clamping area between the splints and the conveying surface of the unloading conveying device are located in the same vertical plane.

[0014] Furthermore, the empty plate storage rack includes a second table top, a second enclosure, and second table legs. The second table top is arranged on the bottom plate through the second table legs. The second table top is provided with a second through hole for the auxiliary material plate to pass through. Wedge-shaped blocks are provided on both sides of the second through hole. A grating is also provided on the upper part of the second enclosure.

[0015] Furthermore, the driving mechanism includes two pulleys, a servo motor and a belt. A belt is wound between the two pulleys, and one of the pulleys is connected to the output end of the servo motor. The belt is connected to the auxiliary material tray moving device. Side end plates are provided at both ends of the base plate, and proximity switches are provided on both side end plates. The proximity switch is used to drive the servo motor to rotate in the opposite direction when the auxiliary material tray moving device approaches. A guide rod is also connected between the two side end plates.

[0016] Furthermore, the auxiliary material tray moving device includes an upper base plate and a lower base plate, the upper base plate and the lower base plate are connected by a connecting column and a push plate is provided on the upper surface of the upper base plate, and a second cylinder is provided on the lower base plate, and the push end of the second cylinder is connected to the push plate.

[0017] Furthermore, a limiting boss is provided on the upper surface of the upper base plate, and the limiting boss is located at the outer periphery of the push plate. Guide sleeves are provided on both sides of the bottom surface of the upper base plate, and the guide sleeves are passed through the guide rods. A belt connecting seat is also provided on one side of the bottom surface of the upper base plate, and the belt connecting seat is connected to the belt.

[0018] On the other hand, the present invention also provides a method for loading and unloading fine auxiliary materials for cigarette production, comprising:

[0019] S1. Removing and loading trays: The driving mechanism drives the auxiliary material tray moving device to move forward to the bottom of the full tray placement rack. At this time, the second cylinder of the auxiliary material tray moving device pushes upward and the first cylinder retracts, so that the auxiliary material tray at the bottom of the full tray placement rack falls on the push plate of the auxiliary material tray moving device to complete the tray removal action. Then, the first cylinder is pushed out so that the stopper blocks the auxiliary material tray in the full tray placement rack;

[0020] S2, unloading: the auxiliary material tray moving device moves backward. When the auxiliary material on the front side of the auxiliary material tray is just under the clamping plate, the movement mode of the auxiliary material tray moving device is switched to intermittent motion. The auxiliary material in the auxiliary material tray is grabbed and placed on the unloading conveyor device through the cooperation of the cross linear module and the pneumatic finger cylinder;

[0021] S3. Empty tray storage: After all the auxiliary materials in the auxiliary material tray are grabbed, the auxiliary material tray moving device continues to move backward to the bottom of the empty tray storage rack. The second cylinder of the auxiliary material tray moving device pushes upward again, so that the push plate pushes the empty auxiliary material tray into the empty tray storage rack. When the second cylinder falls back, the auxiliary material tray is blocked by the wedge-shaped block. When the auxiliary material trays are stacked at the grating, an alarm is sounded.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention is provided with a full material tray storage rack, an empty material tray storage rack, an auxiliary material tray moving device and an auxiliary material grabbing mechanism. The auxiliary material tray moving device can move back and forth under the full material tray storage rack and the empty material tray storage rack, so as to realize the taking out and storage of the auxiliary material tray. When taking out, the auxiliary material tray is pulled out from the bottom of the full material tray storage rack through the cooperation of the second cylinder and the first cylinder without affecting other full material trays on the upper layer. When storing, the auxiliary material tray is pushed to the bottom of the empty material tray storage rack through the pushing of the second cylinder and the action of the wedge-shaped stopper. When unloading, the auxiliary material in the auxiliary material tray is grabbed through the cooperation of the cross linear module and the finger cylinder, and in this process, the movement mode of the auxiliary material tray moving device is intermittent movement, so that the splint has sufficient time to grab the auxiliary material to complete the unloading process. Through this technical means, the automatic control of the auxiliary material loading and unloading process is realized, and the efficiency of the unloading and unloading process is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the invention structure.

[0025] Figure 2 This is a schematic diagram of the structure of the full tray placement rack.

[0026] Figure 3 This is a schematic diagram of the empty disk storage rack structure.

[0027] Figure 4 for Figure 3 Schematic diagram of the middle wedge stop link.

[0028] Figure 5 This is a schematic diagram of the auxiliary material grabbing mechanism structure.

[0029] Figure 6 Schematic diagram of the driving mechanism structure.

[0030] Figure 7 This is a structural diagram of the auxiliary material tray moving device.

[0031] In the figure, 1-full tray storage rack, 1a-first table board, 1b-first table leg, 1c-first through hole, 1d-first enclosure, 1e-first cylinder, 1f-stop;

[0032] 2-empty plate storage rack, 2a-second table top, 2b-second through hole, 2c-second table leg, 2d-second enclosure, 2e-grating, 2f-wedge-shaped stopper;

[0033] 3-base plate, 3a-side end plate, 3b-guide rod, 3c-proximity switch;

[0034] 4- unloading conveying device;

[0035] 5- auxiliary material tray moving device, 5a- upper base plate, 5b- guide sleeve, 5c- lower base plate, 5d- belt connecting seat, 5e- push plate, 5f- limiting boss, 5g- second cylinder, 5h- connecting column;

[0036] 6- auxiliary material grabbing mechanism, 6a- cross linear module, 6b- slide, 6c- pneumatic finger cylinder, 6d- splint, 6e- support;

[0037] 7-driving mechanism, 7a-servo motor, 7b-belt, 7c-pulley;

[0038] 8- auxiliary material tray, 8a- trough body. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0041] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] See also Figure 1 The present invention provides a device for loading and unloading fine auxiliary materials for cigarette production, comprising: a full tray storage rack 1, an empty tray storage rack 2, an auxiliary material tray moving device 5, an auxiliary material grabbing mechanism 6 and a material unloading conveying device 4. The following will introduce and explain the structures one by one.

[0043] A full tray storage rack 1 is used to store auxiliary material trays 8. The full tray storage rack 1 is arranged on the bottom plate 3. The auxiliary material trays 8 filled with auxiliary materials are vertically stacked in the full tray storage rack 1;

[0044] Specifically, see Figure 2 The full material tray storage rack 1 includes a first table board 1a, a first enclosure 1d, a blocking mechanism and a first table leg 1b. The first table board 1a is arranged on the bottom plate 3 through the first table leg 1b. The first table board 1a is provided with a first through hole 1c for the auxiliary material tray 8 to pass through. The first enclosure 1d is provided around the first through hole 1f. The first enclosure 1d is composed of 4 L-shaped steel frames, and the length and width of the space enclosed by the first enclosure 1d match the length and width of the auxiliary material tray 8, thereby preventing the auxiliary material tray 8 from sliding in the first enclosure 1d and causing inaccurate positioning. A blocking mechanism for preventing the auxiliary material tray 8 from falling is provided on the outside of the first through hole 1f. The preferred number of blocking mechanisms is 2 and is located in the first through hole 1f.

[0045] In some embodiments, the blocking mechanism includes a first cylinder 1e and a stopper 1f. The push-out end of the first cylinder 1e is provided with a stopper 1f. The side of the auxiliary material tray 8 is provided with a groove 8a for the stopper 1f to extend into.

[0046] Since the auxiliary material trays 8 are stacked vertically in the full tray storage rack 1, when the bottom auxiliary material tray 8 is not taken out, the cylinder 1e is in an extended state, so that the stoppers 1f extend into the grooves 8a on both sides of the auxiliary material tray 8, thereby preventing the auxiliary material tray 8 from falling;

[0047] An empty tray storage rack 2, which is used to store empty auxiliary material trays 8, and is arranged on the bottom plate 3;

[0048] Specifically, see Figure 3The empty plate storage rack 2 includes a second table board 2a, a second enclosure 2d, and a second table leg 2c. The second table board 2a is arranged on the bottom plate 3 through the second table leg 2c. The second table board 2a is provided with a second through hole 2b for the auxiliary material tray 8 to pass through. Wedge-shaped blocks 2f are provided on both sides of the second through hole 2b. A grating 2e is also provided on the upper part of the second enclosure 2d. When the stored auxiliary material tray 8 reaches the grating 2e, it indicates that the empty plate storage rack 2 is full and an alarm is issued.

[0049] More specifically, if Figure 4 As shown, a protrusion is provided at the bottom of the wedge-shaped stopper 2f, which makes the wedge-shaped stopper 2f only able to be pushed upwards but unable to be pushed downwards. When the empty auxiliary material tray 8 needs to be stored, the auxiliary material tray 8 passes upward through the second through hole 2b while pushing the wedge-shaped stopper 2f upwards. When the two sides of the auxiliary material tray 8 are separated from the wedge-shaped stopper 2f, the wedge-shaped stopper 2f returns to its original level. Preferably, in order to enable the wedge-shaped stopper 2f to more reliably restore its original position, a torsion spring can be provided on the rotating shaft of the wedge-shaped stopper 2f.

[0050] The auxiliary material tray moving device 5 is located below the full tray storage rack 1 and is driven by a driving mechanism 7 so that the auxiliary material tray moving device 5 can reciprocate at the bottom of both the full tray storage rack 1 and the empty tray storage rack 2.

[0051] See also Figure 6 In some embodiments, the driving mechanism 7 includes two pulleys 7c, a servo motor 7a and a belt 7b. A belt 7b is wound between the two pulleys 7c, and one of the pulleys 7c is connected to the output end of the servo motor 7a. The belt 7b is connected to the auxiliary material tray moving device 5. Of course, the present application is not limited to this driving method. Side end plates 3a are provided at both ends of the base plate 3. Both side end plates 3a are provided with proximity switches 3c. The proximity switch 3c is used to drive the servo motor 7a to rotate in the opposite direction when the auxiliary material tray moving device 5 approaches. A guide rod 3b is also connected between the two side end plates 3a, so that the movement of the auxiliary material tray moving device 5 is more stable.

[0052] See also Figure 7 The auxiliary material tray moving device 5 includes an upper base plate 5a and a lower base plate 5c. The upper base plate 5a and the lower base plate 5c are connected by a connecting column 5h and a push plate 5e is provided on the upper surface of the upper base plate 5a. The lower base plate 5c is provided with a second cylinder 5g, and the pushing end of the second cylinder 5g is connected to the push plate 5e, thereby realizing the pushing of the push plate 5e.

[0053] A limiting boss 5f is provided on the upper surface of the upper base plate 5a, and the limiting boss 5f is located on the outer periphery of the push plate 5e, thereby limiting the movement of the auxiliary material tray 8. Guide sleeves 5b are provided on both sides of the bottom surface of the upper base plate 5a, and the guide sleeves 5b are passed through the guide rod 3b. A belt connecting seat 5d is also provided on one side of the bottom surface of the upper base plate 5a, and the belt connecting seat 5d is connected to the belt 7b.

[0054] An auxiliary material grabbing mechanism 6 is used to grab auxiliary materials from an auxiliary material tray 8 on the auxiliary material tray moving device 5. The auxiliary material grabbing mechanism 6 is arranged on the bottom plate 3 and is located between the full tray storage rack 1 and the empty tray storage rack 2;

[0055] For details, please refer to Figure 5 The auxiliary material grabbing mechanism 6 includes a cross linear module 6a, a pneumatic finger cylinder 6c and a splint 6d. The cross linear module 6a and the pneumatic finger cylinder 6c are prior arts, and the present invention will not elaborate on them. The cross linear module 6a is arranged on the base plate 3 through a support 6e, and a pneumatic finger cylinder 6c is arranged on the slide 6b of the cross linear module 6a. Splints 6d are arranged on the two clamping ends of the pneumatic finger cylinder 6c. The clamping area between the splints 6d is located in the same vertical plane as the conveying surface of the unloading conveying device 4.

[0056] The material unloading and conveying device 4 is used to convey the auxiliary materials grabbed by the auxiliary material grabbing mechanism 6 . The material unloading and conveying device 4 is arranged on one side of the bottom plate 3 and close to the auxiliary material grabbing mechanism 6 .

[0057] In another aspect, the present invention further provides a method for loading and unloading fine auxiliary materials for cigarette production, comprising:

[0058] S1. Removing the tray and loading the material: the driving mechanism 7 drives the auxiliary material tray moving device 5 to move forward to the position directly below the full tray placement rack 1. At this time, the second cylinder 5g of the auxiliary material tray moving device 5 pushes upward and the first cylinder 1e retracts, so that the auxiliary material tray 8 at the bottom of the full tray placement rack 1 falls on the push plate 5e of the auxiliary material tray moving device 5 to complete the tray removal action. Then, the first cylinder 1e pushes out so that the stopper 1f blocks the auxiliary material tray 8 in the full tray placement rack 1.

[0059] S2, unloading: the auxiliary material tray moving device 5 moves backward. When the auxiliary material on the front side of the auxiliary material tray 8 is just below the clamping plate 6d, the auxiliary material tray moving device 5 moves intermittently. The auxiliary material in the auxiliary material tray 8 is grabbed and placed on the unloading conveying device 4 through the cooperation of the cross linear module 6a and the pneumatic finger cylinder 6c.

[0060] S3. Empty tray storage: After all the auxiliary materials in the auxiliary material tray 8 are grabbed, the auxiliary material tray moving device 5 continues to move backward to just below the empty tray storage rack 2. The second cylinder 5g of the auxiliary material tray moving device 5 pushes upward again, so that the push plate 5e pushes the empty auxiliary material tray 8 into the empty tray storage rack 2. When the second cylinder 5g falls back, the auxiliary material tray 8 is blocked by the wedge-shaped stopper 2f. When the auxiliary material tray 8 is stacked at the grating, an alarm is sounded.

[0061] Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it will be understood that numerous other modifications and implementations may be devised by those skilled in the art that fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications may be made to the components or arrangements of the subject combination arrangement within the scope of the present disclosure, the drawings, and the claims. In addition to variations and modifications to the components or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A device for loading and unloading fine auxiliary materials for cigarette production, characterized in that: include: A full material tray storage rack (1), wherein the full material tray storage rack (1) is used to store auxiliary material trays (8), and the full material tray storage rack (1) is arranged on the bottom plate (3); An empty tray storage rack (2), the empty tray storage rack (2) is used to store empty auxiliary material trays (8), and the empty tray storage rack (2) is arranged on the bottom plate (3); A supplementary material tray moving device (5), the supplementary material tray moving device (5) is located below the full tray storage rack (1), and the supplementary material tray moving device (5) is driven by a driving mechanism (7) so that the supplementary material tray moving device (5) can perform reciprocating motion at the bottom of both the full tray storage rack (1) and the empty tray storage rack (2); An auxiliary material grabbing mechanism (6) is used to grab auxiliary materials from an auxiliary material tray (8) on the auxiliary material tray moving device (5), wherein the auxiliary material grabbing mechanism (6) is arranged on the bottom plate (3) and is located between the full tray storage rack (1) and the empty tray storage rack (2); The material unloading and conveying device (4) is used to convey the auxiliary materials grabbed by the auxiliary material grabbing mechanism (6). The material unloading and conveying device (4) is arranged on one side of the bottom plate (3) and close to the auxiliary material grabbing mechanism (6).

2. The device for loading and unloading fine auxiliary materials for cigarette production according to claim 1, characterized in that: The full material tray storage rack (1) comprises a first table top (1a), a first enclosure (1d), a blocking mechanism and a first table leg (1b); the first table top (1a) is arranged on the bottom plate (3) via the first table leg (1b); a first through hole (1c) for the auxiliary material tray (8) to pass through is provided on the first table top (1a); a first enclosure (1d) is provided on the periphery of the first through hole (1f); and a blocking mechanism for preventing the auxiliary material tray (8) from falling is provided on the outside of the first through hole (1f).

3. The device for loading and unloading fine auxiliary materials for cigarette production according to claim 2, characterized in that: The blocking mechanism comprises a first cylinder (1e) and a block (1f); the push-out end of the first cylinder (1e) is provided with the block (1f); and the side of the auxiliary material tray (8) is provided with a groove (8a) for the block (1f) to extend into.

4. The device for loading and unloading fine auxiliary materials for cigarette production according to claim 1, characterized in that: The auxiliary material grabbing mechanism (6) comprises a cross linear module (6a), a pneumatic finger cylinder (6c) and a clamping plate (6d); the cross linear module (6a) is arranged on the base plate (3) via a support (6e); a pneumatic finger cylinder (6c) is arranged on the slide (6b) of the cross linear module (6a); clamping plates (6d) are arranged on the two clamping ends of the pneumatic finger cylinder (6c); and a clamping area between the clamping plates (6d) and a conveying surface of the unloading conveying device (4) are located in the same vertical plane.

5. The device for loading and unloading fine auxiliary materials for cigarette production according to claim 1, characterized in that: The empty plate storage rack (2) comprises a second table top (2a), a second enclosure (2d), and a second table leg (2c); the second table top (2a) is arranged on the bottom plate (3) via the second table leg (2c); a second through hole (2b) for the auxiliary material tray (8) to pass through is provided on the second table top (2a); wedge-shaped stoppers (2f) are provided on both sides of the second through hole (2b); and a grating (2e) is further provided on the upper portion of the second enclosure (2d).

6. The device for loading and unloading fine auxiliary materials for cigarette production according to claim 1, characterized in that: The driving mechanism (7) comprises two pulleys (7c), a servo motor (7a) and a belt (7b). A belt (7b) is wound between the two pulleys (7c), and one of the pulleys (7c) is connected to the output end of the servo motor (7a). The belt (7b) is connected to the auxiliary material tray moving device (5). Side end plates (3a) are provided at both ends of the bottom plate (3). Both side end plates (3a) are provided with proximity switches (3c). The proximity switches (3c) are used to drive the servo motor (7a) to rotate in the opposite direction when the auxiliary material tray moving device (5) approaches. A guide rod (3b) is also connected between the two side end plates (3a).

7. The device for loading and unloading fine auxiliary materials for cigarette production according to claim 1, characterized in that: The auxiliary material tray moving device (5) comprises an upper base plate (5a) and a lower base plate (5c), the upper base plate (5a) and the lower base plate (5c) are connected via a connecting column (5h), and a push plate (5e) is provided on the upper surface of the upper base plate (5a), and a second cylinder (5g) is provided on the lower base plate (5c), and the push end of the second cylinder (5g) is connected to the push plate (5e).

8. The device for loading and unloading fine auxiliary materials for cigarette production according to claim 7, characterized in that: A limiting boss (5f) is provided on the upper surface of the upper base plate (5a), and the limiting boss (5f) is located on the outer periphery of the push plate (5e). Guide sleeves (5b) are provided on both sides of the bottom surface of the upper base plate (5a), and the guide sleeves (5b) are passed through the guide rods (3b). A belt connecting seat (5d) is also provided on one side of the bottom surface of the upper base plate (5a), and the belt connecting seat (5d) is connected to the belt (7b).

9. A method for loading and unloading fine auxiliary materials for cigarette production, characterized in that: include S1. Taking the tray and loading the material: the driving mechanism (7) drives the auxiliary material tray moving device (5) to move forward to the position directly below the full tray placement rack (1). At this time, the second cylinder (5g) of the auxiliary material tray moving device (5) pushes upward and the first cylinder (1e) retracts, so that the auxiliary material tray (8) located at the bottom of the full tray placement rack (1) falls on the push plate (5e) of the auxiliary material tray moving device (5) to complete the tray taking action. Then, the first cylinder (1e) is pushed out so that the stopper (1f) blocks the auxiliary material tray (8) in the full tray placement rack (1); S2, unloading: the auxiliary material tray moving device (5) moves backward. When the auxiliary material on the front side of the auxiliary material tray (8) is just below the clamping plate (6d), the auxiliary material tray moving device (5) moves in an intermittent manner. The auxiliary material in the auxiliary material tray (8) is grabbed onto the unloading conveying device (4) through the cooperation of the cross linear module (6a) and the pneumatic finger cylinder (6c); S3. Empty tray storage: After all the auxiliary materials in the auxiliary material tray (8) are taken out, the auxiliary material tray moving device (5) continues to move backward to the bottom of the empty tray storage rack (2), and the second cylinder (5g) of the auxiliary material tray moving device (5) pushes upward again, so that the push plate (5e) pushes the empty auxiliary material tray (8) into the empty tray storage rack (2). When the second cylinder (5g) falls back, the auxiliary material tray (8) is blocked by the wedge-shaped stopper (2f). When the auxiliary material tray (8) is stacked at the grating, an alarm is sounded.

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