Combined roller table heavy load alignment loading and unloading machine

Abstract

The utility model discloses a heavy-load alignment loading and unloading machine with a combined roller table. The heavy-load alignment loading and unloading machine comprises a multifunctional rack, a movable roller table, a multi-point hydraulic translation alignment device, a portal frame, a radar control conveying device, a heavy pushing feeding device and the like. A movable roller table is installed at the top of the multifunctional machine frame, a pushing device is arranged between the movable roller table and the multifunctional machine frame, multi-point hydraulic translation alignment devices are installed at the positions, close to the two ends, of the bottom of the multifunctional machine frame, and a portal frame is installed at the rear end of the top of the machine frame. A radar monitoring device is arranged in the portal frame, a re-pushing device and a feeding device are arranged between the front end and the two sides of the multifunctional rack respectively, and materials pushed in from the feeding device fall into the top of the movable roller table after passing through the feeding device. According to the utility model, the automation of cargo loading and unloading between a warehouse and a freight carriage is realized, the loading and unloading of full-vehicle heavy cargos can be realized at one time, the truck allocation waiting time is greatly reduced, and the logistics loading and unloading quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to a combined roller table heavy-load counter-position loading and unloading machine. Background Art

[0002] After the assembly line is packed, heavy goods need to be piled together and then loaded into the carriage manually or by forklifts. In actual operation, manual loading is inefficient and laborious, and the loading efficiency is slow. There will be a situation where heavy goods are piled up and there is no time to load, and there will also be problems with trucks waiting in line for loading. Forklift loading is more dangerous, and the depth of forklift insertion into the carriage is limited. Forklifts with larger widths or deeper vans cannot be loaded.

[0003] Based on the above problems, we designed a combined roller table heavy-load positioning loader and unloader that can achieve efficient loading. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a roller combination roller table heavy-load alignment loader and unloader which can realize efficient loading.

[0005] The utility model is realized by the following technical solutions:

[0006] A combined roller table heavy-load alignment loader and unloader comprises a multi-functional frame, a mobile roller table is installed on the top of the multi-functional frame, a pushing device is arranged between the mobile roller table and the multi-functional frame, a multi-point hydraulic translation alignment device is installed at the bottom of the multi-functional frame near both ends, a gantry is installed at the top rear end position of the multi-functional frame, a heavy-load pushing device is arranged to slide up and down in the gantry, a feeding device is arranged at the front end of the multi-functional frame, a feeding device is arranged between the two sides of the multi-functional frame, and the feeding device is arranged between the multi-functional frame and the feeding device after the feeding device is lowered, and the material pushed in from the feeding device falls onto the top of the mobile roller table after passing through the feeding device.

[0007] Preferably, rollers are evenly distributed on the plate surface of the mobile roller platform, and the rollers are rotatably arranged. Some of the rollers partially protrude above the mobile roller platform, and the loaded heavy goods are supported by the rollers. Some of the rollers protrude downward to the outside of the mobile roller platform, and these parts of the rollers are rollingly supported on the top of the multi-functional frame, and support the mobile roller platform to detach from the multi-functional frame.

[0008] Preferably, a rack is provided inside the gantry, the rack is arranged vertically, and the heavy-load pushing device is adapted to the rack.

[0009] Preferably, the heavy-load pushing device includes a movable bracket, a central controller and an operation panel, both ends of the movable bracket are inserted into the gantry, pulleys are installed at both ends and the front and rear end surfaces of the movable bracket, the pulleys are in contact with the inner wall of the gantry, a reduction motor is installed on the top of the movable bracket, the reduction motor is connected to a transmission shaft, a bearing is matched between the transmission shaft and the movable bracket, a gear meshing with the rack is arranged at the end of the transmission shaft, and more than two hydraulic push rods are installed at the front end of the movable bracket, and a push plate is installed after the telescopic end of the hydraulic push rod passes through the movable bracket; a radar bracket is arranged at the end surface of the movable bracket facing the push plate, a positioning and ranging radar is installed through the radar bracket, the cargo loading and unloading completion status is monitored in real time, and the relevant information is input into the central controller, and human-computer interaction is performed through the operation panel; the multi-point hydraulic translation alignment device is driven by the positioning and ranging radar and the central controller, and the overall translation and rotation alignment of the multi-functional rack can be realized through multi-point displacement coordination.

[0010] Preferably, the push plate is connected with a guide rod, and a linear bearing is matched between the guide rod and the movable bracket.

[0011] Preferably, the multi-point hydraulic translation alignment device includes a base plate, a hydraulic moving rod is provided in the middle of the base plate, a slide is provided inside the base plate, a slot for giving way to the hydraulic moving rod is provided in the middle of the slide, a hydraulic support rod is installed inside the multi-functional frame, the telescopic end of the hydraulic support rod is fixed to the slide, and both ends of the hydraulic moving rod are fixed to the slide.

[0012] Preferably, the feeding device includes a reduction motor installed in the multi-functional frame, and a chain transmission mechanism installed outside the multi-functional frame and driven by the reduction motor. It also includes slide rails installed on both sides of the outside of the multi-functional frame, and a first slide plate slidably installed through the slide rails. The first slide plate is fixed to the chain transmission mechanism, and when the chain transmission mechanism rotates, the first slide plate is driven to slide along the slide rails. A swing arm is connected through the rotation of the first slide plate, and a push rod is installed between the swing arms on both sides. Shaft rods are provided at both ends of the push rod, which are fixed to the swing arm through the shaft rod, and rollers are installed on the shaft rod. A plurality of rollers are rotatably arranged at the top of the rod. When the swing arm swings down to the limit position, the push rod is located between the multifunctional frame and the feeding device. The heavy goods entering from the feeding device fall onto the top of the mobile roller table after passing through the rollers. A telescopic rod is installed on the side of the multifunctional frame. The movable end of the telescopic rod acts on the swing arm. A lower limit device is arranged on the outer side of the multifunctional frame. The lower limit device limits the swing of the swing arm. When the swing arm swings up to the limit position, the roller acts on the top of the multifunctional frame. At this time, under the support of the roller, the bottom of the push rod is in clearance with the mobile roller table. As the push rod translates above the mobile roller table, the heavy goods at one end of the top of the mobile roller table are pushed to the other end.

[0013] Preferably, the feeding device includes a base, a plurality of feed rollers are arranged in parallel on the top of the base, the feed rollers are rotatable, side brackets are arranged at the front and rear ends of the base, and a pushing rod is slidably arranged between the side brackets on both sides, and the pushing rod is gap-matched with the feed rollers.

[0014] A radar bracket is arranged at the end surface of the movable bracket facing the push plate, and a ranging radar is installed through the radar bracket.

[0015] The beneficial effects of the utility model are:

[0016] Advantage 1: the device can be adaptively adjusted according to the position of the truck compartment so as to facilitate the sliding of the mobile roller platform into the compartment, and has stronger adaptability.

[0017] Advantage 2: The application of this device eliminates the step of manually loading heavy goods into the carriage, making the operation more convenient and quick, the loading efficiency higher, and the loading of a whole truckload of heavy goods can be achieved at one time, greatly reducing the time trucks have to queue for loading.

[0018] Advantage three: the device has a high degree of equipment integration and can be directly built on the side of the assembly line. The heavy goods packaged on the assembly line are directly stacked on the mobile roller table to improve production efficiency.

[0019] Advantage four: the utility model realizes the mechanization of cargo loading and unloading between warehouses and freight carriages, making the operation more convenient and quick, and can realize the loading and unloading of a whole truckload of heavy cargo at one time, greatly reducing the waiting time for truck dispatch and improving the quality and efficiency of logistics loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 is the distribution diagram of the drum;

[0023] Figure 3 It is a structural schematic diagram of a heavy-load pushing device;

[0024] Figure 4 is a schematic diagram of a push plate;

[0025] Figure 5 It is a structural schematic diagram of a multi-point hydraulic translation alignment device;

[0026] Figure 6 It is a schematic diagram of the coordination between the feeding device and the feeding device;

[0027] Figure 7 is a partial schematic diagram of the push rod;

[0028] Figure 8 A top view of the feeding device. DETAILED DESCRIPTION

[0029] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0030] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0031] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, in the description of the present invention, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "set", "socket", "connect", "penetrate", "plug in" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1 A combined roller platform heavy-load alignment loader and unloader shown in the figure includes a multi-functional frame 1, a movable roller platform 2 is installed on the top of the frame 1, a pushing device is provided between the movable roller platform 2 and the frame 1, a multi-point hydraulic translation alignment device 3 is installed at the bottom of the frame 1 near both ends, a gantry 4 is installed at the top rear end position of the frame 1, a heavy-load pushing device 5 is provided for sliding up and down in the gantry 4, a feeding device 8 is installed at the front end of the multi-functional frame 1, a feeding device 6 is provided between the two sides of the multi-functional frame 1, and the feeding device 6 is located between the multi-functional frame 1 and the feeding device 8 after being lowered, and the material pushed in from the feeding device 8 falls into the top of the movable roller platform 2 after passing through the feeding device 6.

[0035] In the above technical scheme, the loaded heavy goods are stacked above the moving roller platform 2, and the moving roller platform 2 is pushed by the pushing device. The moving roller platform 2 carrying the heavy goods is pushed into the carriage. At this time, the heavy-load pushing device 5 moves downward and blocks the front of the heavy goods. At this time, the pushing device drives the moving roller platform 2 to reset, and the heavy goods are blocked in the carriage by the heavy-load pushing device 5. The moving roller platform 2 is pulled out from the bottom of the heavy goods, leaving the heavy goods in the carriage.

[0036] See also Figure 2As shown, rollers 21 are evenly distributed on the plate surface of the mobile roller platform 2, and the rollers 21 are rotatably arranged. Some of the rollers 21 partially protrude above the mobile roller platform 2, and the loaded heavy goods are supported by the rollers 21. Some of the rollers 21 protrude downward to the outside of the mobile roller platform 2, and this part of the rollers 21 is rollingly supported on the top of the multi-functional frame 1, and supports the mobile roller platform 2 to detach from the multi-functional frame 1.

[0037] In the above technical solution, the roller 21 is used to provide rolling support for the sliding of the movable roller stage 2 , thereby reducing the moving resistance of the movable roller stage 2 .

[0038] Part of the rollers 21 are supported on the bottom of the heavy goods, so that the movable roller platform 2 can be easily pulled away from the bottom of the heavy goods.

[0039] See also Figure 1 and Figure 3 As shown, a rack 7 is provided inside the gantry 4 , the rack 7 is vertically arranged, and the heavy-load pushing device 5 is adapted to the rack 7 .

[0040] See also Figure 3 and Figure 4 As shown, the heavy-load pushing device 5 includes a movable bracket 501, a central controller 9 and an operation panel 10. Both ends of the movable bracket 501 are inserted into the gantry 4. Pulleys 502 are installed at both ends and the front and rear end surfaces of the movable bracket 501. The pulleys 502 are in contact with the inner wall of the gantry 4. A reduction motor 503 is installed on the top of the movable bracket 501. The reduction motor 503 is connected to a transmission shaft 504. A bearing 505 is matched between the transmission shaft 504 and the movable bracket 501. A gear 506 meshing with the rack 7 is arranged at the end of the transmission shaft 504. More than two hydraulic push rods 507 are installed at the front end of the movable bracket 501. The telescopic end of the hydraulic push rod 507 passes through the movable bracket 501 and is equipped with a push plate 508. A radar bracket 5551 is arranged at the end surface of the movable bracket 501 facing the push plate 508, and a positioning and ranging radar 5552 is installed through the radar bracket 5551. ， The cargo loading and unloading completion status is monitored in real time, and the relevant information is input into the central controller 9, and human-computer interaction is performed through the operation panel 10; the multi-point hydraulic translation alignment device 3 is jointly driven by the positioning and ranging radar 5552 and the central controller 9, and the overall translation and rotation alignment of the multi-function rack 1 can be realized through multi-point displacement coordination.

[0041] In the above technical scheme, the position of the movable bracket 501 is adjusted by the cooperation of the gear and the rack. When loading heavy goods, the movable bracket 501 moves upward to avoid affecting the moving roller table 2 carrying the heavy goods into the car. After the moving roller table 2 is pushed into place, the movable bracket 501 moves downward and is pushed out to act on the heavy goods through the push plate 508, completing the limiting of the heavy goods and pushing the heavy goods completely into the car. At this time, the moving roller table 2 is pulled out and disengaged, which effectively avoids the risk of the moving roller table 2 being pulled outward and bringing the heavy goods out of the car again, and also avoids the risk of the heavy goods falling to the ground due to insufficient pushing depth of the heavy goods.

[0042] See also Figure 3 As shown, the push plate 508 is connected to a guide rod 509 , and a linear bearing 510 is provided between the guide rod 509 and the movable bracket 501 .

[0043] This technical solution can make the movement of the push plate 508 more stable.

[0044] See also Figure 5 As shown, the multi-point hydraulic translation alignment device 3 includes a base plate 31, a hydraulic moving rod 32 is arranged in the middle of the base plate 31, a slide plate 33 is arranged in the base plate 31, and a slot 34 for giving way to the hydraulic moving rod 32 is arranged in the middle of the slide plate 33. A hydraulic support rod 35 is installed inside the multi-functional frame 1, and the telescopic end of the hydraulic support rod 35 is fixed to the slide plate 33, and the two ends of the hydraulic moving rod 32 are fixed to the slide plate 33.

[0045] In the above technical solution, the hydraulic support rod 35 can adjust the height of the multifunctional frame 1 to facilitate the sliding of the mobile roller platform 2 into the carriage, and the slide plate 33 can slide along the base plate 31 to facilitate the alignment of the mobile roller platform 2 and the carriage.

[0046] See also Figure 1 , Figure 6 , Figure 7 and Figure 8The feeding device 6 shown includes a reduction motor installed inside the multifunctional frame 1, and a chain transmission mechanism 601 installed outside the multifunctional frame 1 and driven by the reduction motor. It also includes slide rails 602 installed on both sides of the outside of the multifunctional frame 1, and a first slide plate 603 slidably installed through the slide rails 602. The first slide plate 603 is fixed to the chain transmission mechanism 601. When the chain transmission mechanism 601 rotates, the first slide plate 603 is driven to slide along the slide rails 602. The first slide plate 603 is connected to the swing arm 604 through rotation. A push rod 605 is installed between the swing arms 604 on both sides. Shaft rods 606 are set at both ends of the push rod 605. The push rods 606 are fixed to the swing arm 604 through the shaft rod 606. Rollers 607 are installed on the shaft rod 606. The top of the push rod 605 is rotatably provided with a plurality of rollers 608. When the swing arm 604 swings down to the limit position, the push rod 605 is located between the multifunctional frame 1 and the feeding device 8. The heavy goods entering from the feeding device 8 fall into the top of the mobile roller table 2 after passing through the rollers 607. A telescopic rod 609 is installed on the side of the multifunctional frame 1. The movable end of the telescopic rod 609 acts on the swing arm 604. A lower limit device 610 is arranged on the outer side of the multifunctional frame 1. The lower limit device 610 forms a limit for the swing of the swing arm 604. When the swing arm 604 swings up to the limit position, the rollers 607 act on the top of the multifunctional frame 1. At this time, under the support of the rollers 607, the bottom of the push rod 605 is in clearance with the mobile roller table 2. As the push rod translates above the mobile roller table, the heavy goods at one end of the top of the mobile roller table are pushed to the other end.

[0047] See also Figure 8 As shown, the feeding device 8 includes a base 801, and a plurality of feeding rollers 802 are arranged in parallel on the top of the base 801, and the feeding rollers 802 are rotatable. Side brackets 803 are arranged at the front and rear ends of the base 801, and a pushing rod 804 is slidably arranged between the side brackets 803 on both sides, and the pushing rod 804 is loosely matched with the feeding rollers 802.

[0048] In the above technical scheme, the packed heavy goods are pushed toward the direction of the mobile roller platform 2 by the pushing rod 804. The pushing rod 804 is manually driven or electrically driven. The heavy goods slide down to the top of the mobile roller platform 2 through the transition of the roller 608. At this time, the telescopic rod 609 is lifted. The telescopic rod 609 is an electric telescopic rod or a hydraulic telescopic rod. After being lifted to the limit position, the roller 607 is supported on the top of the multi-functional frame 1. At this time, the chain transmission mechanism is driven by the reduction motor. The first slide plate slides along the slide rail 602 driven by the chain transmission mechanism, pushing the heavy goods from one end of the mobile roller platform to the other end, completing the automatic pushing of the heavy goods.

[0049] See also Figure 4 As shown, a radar bracket 5551 is provided at the end surface of the movable bracket 501 facing the push plate 508 , and a ranging radar 5552 is installed through the radar bracket 5551 .

[0050] When the movable bracket 501 descends to the bottom and the push plate 508 is pushed outward, the ranging radar 5552 monitors the pushing distance of the heavy goods. When the pushing depth is insufficient, an alarm is sounded through an external alarm.

[0051] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A combined roller table heavy-load aligning loader and unloader, characterized in that: The invention comprises a multifunctional frame (1), a movable roller table (2) is installed on the top of the multifunctional frame (1), a pushing device is arranged between the movable roller table (2) and the multifunctional frame (1), and a multi-point hydraulic translation alignment device (3) is installed at the bottom of the multifunctional frame (1) near both ends; a gantry (4) is installed at the rear end position of the top of the multifunctional frame (1), a heavy load pushing device (5) is arranged in the gantry (4) for sliding up and down, a feeding device (8) is arranged at the front end of the multifunctional frame (1), a feeding device (6) is arranged between the two sides of the multifunctional frame (1), and the feeding device (6) is located between the multifunctional frame (1) and the feeding device (8) after being lowered, and the material pushed in from the feeding device (8) falls into the top of the movable roller table (2) after passing through the feeding device (6).

2. The combined roller table heavy-load aligning loader and unloader according to claim 1 is characterized in that: Rollers (21) are evenly distributed on the plate surface of the movable roller platform (2), and the rollers (21) are rotatably arranged. Some of the rollers (21) partially protrude above the movable roller platform (2), and the loaded heavy goods are supported by the rollers (21). Some of the rollers (21) protrude downward to the outside of the movable roller platform (2), and these parts of the rollers (21) are rollingly supported on the top of the multifunctional frame (1), and support the movable roller platform (2) to separate from the multifunctional frame (1).

3. The combined roller table heavy-load aligning loader and unloader according to claim 1 is characterized in that: A rack (7) is arranged inside the gantry (4), the rack (7) is arranged vertically, and the heavy-load pushing device (5) is adapted to the rack (7).

4. The combined roller table heavy-load aligning loader and unloader according to claim 3 is characterized in that: The heavy-load pushing device (5) comprises a movable bracket (501), a central controller (9) and an operation panel (10), the two ends of the movable bracket (501) are inserted into the gantry (4), the two ends and the front and rear end surfaces of the movable bracket (501) are equipped with pulleys (502), the pulleys (502) are attached to the inner wall of the gantry (4), and a reduction motor (503) is installed on the top of the movable bracket (501), the reduction motor (503) is connected to a transmission shaft (504), and the transmission shaft (504) and the movable bracket (501) are connected to each other. 1), a bearing (505) is matched between the transmission shaft (504), a gear (506) meshing with the rack (7) is arranged at the end of the transmission shaft (504), two or more hydraulic push rods (507) are installed at the front end of the movable bracket (501), and the telescopic end of the hydraulic push rod (507) passes through the movable bracket (501) and is equipped with a push plate (508); a radar bracket (5551) is arranged at the end surface of the movable bracket (501) facing the push plate (508), and a positioning and ranging radar (5552) is installed through the radar bracket (5551) ， The cargo loading and unloading completion status is monitored in real time, and the relevant information is input into the central controller (9), and human-machine interaction is performed through the operation panel (10); the multi-point hydraulic translation alignment device (3) is jointly driven by the positioning and ranging radar (5552) and the central controller (9), and the overall translation and rotation alignment of the multi-function rack (1) can be achieved through multi-point displacement coordination.

5. The combined roller table heavy-load aligning loader and unloader according to claim 4 is characterized in that: The push plate (508) is connected to a guide rod (509), and a linear bearing (510) is provided between the guide rod (509) and the movable bracket (501).

6. The combined roller table heavy-load aligning loader and unloader according to claim 1 is characterized in that: The multi-point hydraulic translation alignment device (3) comprises a base plate (31), a hydraulic moving rod (32) is arranged in the middle of the base plate (31), a slide plate (33) is arranged in the base plate (31), a notch (34) for accommodating the hydraulic moving rod (32) is arranged in the middle of the slide plate (33), a hydraulic support rod (35) is installed inside the multifunctional frame (1), the telescopic end of the hydraulic support rod (35) is fixed to the slide plate (33), and the two ends of the hydraulic moving rod (32) are fixed to the slide plate (33).

7. The combined roller table heavy-load aligning loader and unloader according to claim 1 is characterized in that: The feeding device (6) includes a reduction motor installed inside the multifunctional frame (1), and a chain transmission mechanism (601) installed outside the multifunctional frame (1) and driven by the reduction motor. It also includes slide rails (602) installed on both sides of the outside of the multifunctional frame (1), and a first slide plate (603) slidably installed through the slide rails (602). The first slide plate (603) is fixed to the chain transmission mechanism (601). When the chain transmission mechanism (601) rotates, it drives the first slide plate (603) to slide along the slide rails (602). The first slide plate (603) is connected to the swing arm (604) through rotation. A push rod (605) is installed between the swing arms (604) on both sides. A shaft rod (606) is provided at both ends of the push rod (605). The push rod is fixed to the swing arm (604) through the shaft rod (606). A roller (607) is installed on the shaft rod (606). The top of the push rod (605) is rotatably provided with a plurality of rollers (608). When the swing arm (604) swings down to the limit position, the push rod (605) is located between the multifunctional frame (1) and the feeding device (8). The heavy goods entering from the feeding device (8) fall onto the top of the moving roller table (2) after passing through the rollers (607). A telescopic rod (609) is installed on the side of the multifunctional frame (1). The movable telescopic rod (609) The end of the push rod (605) acts on the swing arm (604), and a lower limit device (610) is arranged on the outer side of the multifunctional frame (1), and the lower limit device (610) limits the downward swing of the swing arm (604); when the swing arm (604) swings up to the limit position, the roller (607) acts on the top of the multifunctional frame (1), and at this time, under the support of the roller (607), the bottom of the push rod (605) is clearance-matched with the movable roller platform (2).

8. The combined roller table heavy-load aligning loader and unloader according to claim 7 is characterized in that: The feeding device (8) comprises a base (801), a plurality of feeding rollers (802) are arranged in parallel on the top of the base (801), and the feeding rollers (802) are rotatable. Side brackets (803) are arranged at the front and rear ends of the base (801), and a pushing rod (804) is slidably arranged between the side brackets (803) on both sides, and the pushing rod (804) is clearance-matched with the feeding rollers (802).

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