A packaging device for plastic bag production and processing

Abstract

This invention discloses a packaging device for plastic bag production and processing, relating to the field of plastic packaging equipment technology. It includes a workbench with supporting legs fixedly installed at its bottom. Two rotating shafts are rotatably mounted inside the workbench, with the output end of a motor fixedly installed on the left side of each shaft. The two shafts are connected via a conveyor belt. A packaging device is located at the front of the workbench, and a feeding box is fixedly installed at the top. A centering device is located at the top of the workbench, and a discharge control device is located inside the feeding box. A pushing device is located at the bottom of the feeding box. Through repeated pushing by a pusher plate, the rolled plastic bags are ensured to always remain at the center of the conveyor belt, reducing the risk of equipment malfunction or bag drop due to misalignment. Simultaneously, it ensures stable movement of the bags throughout the conveying process, improving the overall efficiency of the production line.

Description

Technical Field

[0001] This invention relates to the field of plastic packaging equipment technology, specifically a packaging device used in the production and processing of plastic bags. Background Technology

[0002] Packaging equipment refers to devices used for packaging, counting, bundling, and sealing finished plastic bag products (such as pre-made bags, cut bags, etc.). The function of packaging equipment is to neatly and systematically pack finished plastic bags for storage, transportation, and sale.

[0003] Patent publication number CN107934031B relates to the field of plastic packaging equipment technology. This patent discloses a packaging device for plastic bag production and processing, including a support frame. A support plate is fixedly connected to the top surface of the support frame. A motor is fixedly connected to the middle of one end of the upper surface of the support plate. A conveyor belt is arranged on the upper surface of the support plate, away from the motor. Gears are meshed at both ends of the inner surface of the conveyor belt, and the rotating end of the motor is rotatably connected to the gears via a belt. A sliding plate is arranged on the surface of the conveyor belt away from the motor, and a movable receiving plate is connected to the end of the sliding plate away from the conveyor belt. This patent relates to the field of plastic packaging equipment technology. This packaging device for plastic bag production and processing achieves the purpose of rapid packaging of plastic bags, which is beneficial to improving work efficiency. Furthermore, vacuum heat sealing packaging helps to prevent damage to plastic bags during transportation, thereby improving economic benefits.

[0004] In the aforementioned patent, a sliding plate is provided on the surface of the conveyor belt away from the motor, and a movable receiving plate is connected to the end of the sliding plate away from the conveyor belt. This achieves the purpose of quickly packaging plastic bags and is beneficial to improving work efficiency. However, when the packaged plastic bags are conveyed into the packaging device through the conveyor device, it is difficult to keep the plastic bags in the center position of the conveyor device. This may cause the plastic bags to deviate from the conveying route, resulting in incomplete packaging. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a packaging device for the production and processing of plastic bags, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a packaging device for plastic bag production and processing, comprising a workbench, a support leg fixedly installed at the bottom of the workbench, two rotating shafts rotatably installed inside the workbench, an output end of a motor fixedly installed on the left side of the rotating shafts, the two rotating shafts being connected by a conveyor belt, a packaging device provided at the front of the workbench, a feeding box fixedly installed at the top of the workbench, and a centering device provided at the top of the workbench;

[0007] The centering device includes a bracket, a second motor, a rotating rod, a fixed rod, a sliding column, a first push plate, and an inclined plate. The bracket is fixedly installed on the top of the workbench, the second motor is fixedly installed on the top of the bracket, the rotating rod is fixedly installed on the output end of the second motor, the fixed rod is fixedly installed on the circumference of the rotating rod, the sliding column slides through the bracket, the first push plate is fixedly installed on the end of the sliding column near the fixed rod, and the inclined plate is fixedly installed on the back of the first push plate. When the plastic bag is started to be conveyed, the second motor is started, which drives the rotating rod to start rotating. The rotating rod rotates and drives the fixed rod to start rotating. The rotation of the fixed rod pushes the first push plate to move to the left. The movement of the first push plate to the left drives the sliding column to move to the left and squeezes the first spring. As the fixed rod continues to rotate, it stops pushing the first push plate. Then, the first push plate moves to the right and resets under the action of the first spring. Under the repeated push of the fixed rod, the first push plate moves left and right.

[0008] The feed box is equipped with a control discharge device for controlling the entry and exit of plastic bags and a pushing device for ensuring that the plastic bags can be correctly moved onto the conveyor belt. The control discharge device ensures that the amount of plastic bags entering and exiting can be reasonably controlled, and the pushing device ensures that the plastic bags can be effectively pushed from the channel of the feed box to the designated position of the conveyor device.

[0009] According to the above technical solution, the fixed rod contacts the push plate, and a spring is provided between the push plate and the bracket. The contact ensures that the fixed rod can push the push plate when it rotates, and the spring ensures that the push plate can achieve self-reset.

[0010] According to the above technical solution, the control discharge device includes a fixed plate, a slide bar, an inclined block, a movable door, and an L-shaped rod. The fixed plate is fixedly installed on the inner wall of the feed box. The slide bar slides through the feed box. The inclined block is fixedly installed at the end of the slide bar near the support. The movable door is fixedly installed at the end of the slide bar away from the inclined block. The L-shaped rod is fixedly installed on the top of the push plate. When the push plate moves to the right, it drives the L-shaped rod to move to the right. The L-shaped rod moves to the right, pushing the inclined block forward. The inclined block moves forward, driving the slide bar forward. The slide bar moves forward, driving the movable door forward. The movable door moves forward, opening the feed box channel.

[0011] According to the above technical solution, the control discharge device further includes rack one, gear, push plate two, and rack two. Rack one is fixedly installed on the left side of the movable door, gear is rotatably installed on the left side of the feed box, push plate two is slidably installed on the top of the fixed plate, and rack two is fixedly installed on the left side of push plate two. When the movable door moves forward, it drives rack one to move forward. The forward movement of rack one drives gear to start rotating. The rotation of gear drives rack two to start moving backward. The backward movement of rack two drives push plate two to start moving backward. Push plate two moves backward and pushes the rolled plastic bags on the fixed plate into the channel of the feed box.

[0012] According to the above technical solution, the inclined block one and the L-shaped rod are both set as inclined surfaces, the rack one meshes with the gear, the gear meshes with the rack two, and a spring two is provided between the slide rod and the outer wall of the feed box. By setting the inclined surfaces, it is ensured that the L-shaped rod can smoothly push the inclined block one when moving. By meshing, it is ensured that the rack one can drive the gear to rotate when moving. By meshing, it is ensured that the gear can drive the rack two to move when rotating. By setting the spring two, it is ensured that the slide rod can achieve self-reset.

[0013] According to the above technical solution, the pushing device includes a push plate three, a connecting rod, an inclined block two, and a push rod. The push plate three is slidably installed on the inner wall of the feed box. The connecting rod is fixedly installed on the left side of the push plate three. The inclined block two is fixedly installed on the end of the connecting rod away from the push plate three. The push rod is fixedly installed on the left side of the rack two. When the rack two moves backward, it drives the push rod to start moving backward. The push rod moves backward and pushes the inclined block two to start moving to the right. The inclined block two moves to the right and drives the connecting rod to start moving to the right. The connecting rod moves to the right and drives the push plate three to start moving to the right.

[0014] According to the above technical solution, the pushing device further includes an inclined rod, a moving plate, and an inclined block three. The inclined rod is fixedly installed at the bottom of the inclined block two, the moving plate is slidably installed at the bottom of the feed box, and the inclined block three is fixedly installed on the back of the moving plate. When the inclined block two moves to the right, it drives the inclined rod to start moving to the right. The movement of the inclined rod to the right pushes the inclined block three to start moving forward, and the forward movement of the inclined block three drives the moving plate to start moving forward.

[0015] According to the above technical solution, the sides of the inclined block two and the push rod that are close to each other are both set as inclined surfaces, the sides of the inclined rod and the inclined block three that are close to each other are both set as inclined surfaces, and a spring three is provided between the moving plate and the feed box. By setting the inclined surfaces, it is ensured that the push rod can smoothly push the inclined block two when moving, by setting the inclined surfaces, it is ensured that the inclined rod can smoothly push the inclined block three when moving, and by setting the spring three, it is ensured that the moving plate can achieve self-reset.

[0016] This invention provides a packaging device for the production and processing of plastic bags. It has the following beneficial effects:

[0017] (1) The invention starts by conveying rolled plastic bags to the packaging device through the rotation of the conveyor belt. The automatic conveying of the conveyor belt reduces the number of times workers have to manually handle the plastic bags, thereby reducing labor intensity. At the same time, it can ensure that each plastic bag is delivered to the next stage according to certain specifications, avoiding the influence of human factors on packaging quality, thereby improving the quality consistency of the final product. The repeated pushing of the pusher plate ensures that the rolled plastic bags are always located in the center of the conveyor belt, avoiding deviation and reducing the risk of equipment failure or bag falling due to deviation. At the same time, it ensures that the bags move stably throughout the conveying process, avoiding jamming or unevenness, and improving the overall efficiency of the production line.

[0018] (2) This invention, by reciprocating the opening and closing of the channel to reasonably control the amount of plastic bags entering and leaving, can ensure that the working rhythm of each link on the production line is consistent, avoid congestion or idleness, and at the same time ensure that the production will not stop due to excessive or insufficient accumulation of plastic bags, thereby reducing waiting time and maintaining the continuity of the production process. By pushing the second pusher plate backward to push the rolled plastic bags on the fixed plate to the channel of the feeding box, it is ensured that the plastic bags can continuously and evenly enter the channel, reducing the production stop time caused by accumulation, thereby improving the overall production efficiency. At the same time, it avoids excessive accumulation of plastic bags near the channel of the feeding box, thereby ensuring a balanced supply of plastic bags in subsequent processing or production processes.

[0019] (3) The invention can effectively push the plastic bag from the feed box to the designated position of the conveying device when the plastic bag falls onto the conveyor belt through the channel by moving the push plate three to the right, ensuring that the plastic bag falls accurately on the surface of the conveyor belt or other conveying device, while avoiding the plastic bag from stopping or being delayed at the feed inlet, thereby improving the overall conveying efficiency of the production line. The moving plate moves forward to avoid the plastic bag directly impacting the surface of the conveying device, reducing wear and damage to the conveying device, and avoiding waste caused by the plastic bag falling inaccurately or unevenly. Attached Figure Description

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the shaft and motor structure of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of the centering device structure of the present invention;

[0023] Figure 4 This is a cross-sectional schematic diagram of the push plate and the inclined panel structure of the present invention;

[0024] Figure 5This is a cross-sectional schematic diagram of the structure of the discharge control device of the present invention;

[0025] Figure 6 This is a cross-sectional schematic diagram of the sliding rod and movable door structure of the present invention;

[0026] Figure 7 This is a cross-sectional schematic diagram of the structure of the driving device of the present invention;

[0027] Figure 8 This is a cross-sectional schematic diagram of the inclined block three and the movable plate structure of the present invention.

[0028] In the diagram: 1. Workbench; 2. Support leg; 3. Rotating shaft; 4. Motor 1; 5. Conveyor belt; 6. Packaging device; 7. Feed box; 8. Bracket; 9. Motor 2; 10. Rotating rod; 11. Fixed rod; 12. Sliding column; 13. Push plate 1; 14. Inclined plate; 151. Fixed plate; 152. Sliding rod; 153. Inclined block 1; 154. Sliding door; 155. L-shaped rod; 156. Rack 1; 157. Gear; 158. Push plate 2; 159. Rack 2; 161. Push plate 3; 162. Connecting rod; 163. Inclined block 2; 164. Inclined rod; 165. Moving plate; 166. Inclined block 3; 167. Push rod. Detailed Implementation

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Please see Figures 1-8 One embodiment of the present invention is: a packaging device for plastic bag production and processing, including a workbench 1, a support leg 2 fixedly installed at the bottom of the workbench 1, two rotating shafts 3 rotatably installed inside the workbench 1, the output end of a motor 4 fixedly installed on the left side of the rotating shafts 3, the two rotating shafts 3 being connected by a conveyor belt 5, a packaging device 6 being provided at the front of the workbench 1, a feeding box 7 being fixedly installed at the top of the workbench 1, and a centering device being provided at the top of the workbench 1;

[0031] The centering device includes a bracket 8, a second motor 9, a rotating rod 10, a fixed rod 11, a sliding column 12, a push plate 13, and an inclined plate 14. The bracket 8 is fixedly installed on the top of the workbench 1, the second motor 9 is fixedly installed on the top of the bracket 8, the rotating rod 10 is fixedly installed on the output end of the second motor 9, the fixed rod 11 is fixedly installed on the circumference of the rotating rod 10, the sliding column 12 slides through the bracket 8, the push plate 13 is fixedly installed on the end of the sliding column 12 near the fixed rod 11, and the inclined plate 14 is fixedly installed on the back of the push plate 13. Through the repeated pushing of the push plate 13, the rolled plastic bag is ensured to always be located in the center of the conveyor belt 5, avoiding deviation and reducing the risk of equipment failure or bag falling due to deviation. At the same time, it ensures that the bag moves stably throughout the conveying process, avoiding jamming or unevenness, and improving the overall efficiency of the production line.

[0032] The fixed rod 11 contacts the push plate 13. A spring is provided between the push plate 13 and the bracket 8. The contact ensures that the fixed rod 11 can push the push plate 13 when it rotates. The spring ensures that the push plate 13 can achieve self-reset.

[0033] In this embodiment, the operation is as follows: First, the operator checks whether the equipment is working properly. After confirming that everything is correct, motor 4 is started, which drives shaft 3 to rotate. The rotation of shaft 3 drives conveyor belt 5 to rotate, which in turn transports the rolled plastic bags to packaging device 6. The automatic transport of conveyor belt 5 reduces the number of times workers manually handle the plastic bags, thus reducing labor intensity. Simultaneously, it ensures that each plastic bag is delivered to the next stage according to certain specifications, avoiding the impact of human factors on packaging quality and improving the consistency of the final product quality. When the plastic bags begin to be transported, motor 9 is started, which drives rotating rod 10 to rotate. Rotating rod 10 then... The fixed rod 11 starts to rotate, which pushes the push plate 13 to move to the left. The leftward movement of the push plate 13 causes the sliding column 12 to move to the left and squeeze the spring. As the fixed rod 11 continues to rotate, it stops pushing the push plate 13. Then, the push plate 13 starts to move to the right and reset under the action of the spring. With the repeated pushing of the fixed rod 11, the push plate 13 starts to move left and right. The repeated pushing of the push plate 13 ensures that the rolled plastic bag is always in the center of the conveyor belt 5, avoiding deviation and reducing the risk of equipment failure or bag falling due to deviation. At the same time, it ensures that the bag moves stably throughout the conveying process, avoiding jamming or unevenness, and improving the overall efficiency of the production line.

[0034] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, the feed box 7 is provided with a control discharge device for controlling the entry and exit of plastic bags and a pushing device for ensuring that the plastic bags can be correctly moved onto the conveyor belt 5. The control discharge device ensures that the amount of plastic bags entering and exiting can be reasonably controlled, and the pushing device ensures that the plastic bags can be effectively pushed from the channel of the feed box 7 to the designated position of the conveyor device. The control discharge device includes a fixed plate 151, a slide bar 152, an inclined block 153, a movable door 154, and an L-shaped rod 155. The fixed plate 151 is fixedly installed on... The inner wall of the feeding box 7 has a sliding rod 152 that slides through it. An inclined block 153 is fixedly installed at the end of the sliding rod 152 near the support 8. A movable door 154 is fixedly installed at the end of the sliding rod 152 away from the inclined block 153. An L-shaped rod 155 is fixedly installed on the top of the push plate 13. By reciprocating the opening and closing of the channel, the amount of plastic bags entering and leaving the box can be reasonably controlled. This ensures that the working rhythm of each link on the production line remains consistent, avoiding congestion or idleness. At the same time, it ensures that the production will not stop due to excessive or insufficient accumulation of plastic bags, thereby reducing waiting time and maintaining the continuity of the production process.

[0035] The material discharge control device also includes rack 156, gear 157, push plate 158, and rack 159. Rack 156 is fixedly installed on the left side of the movable door 154, gear 157 is rotatably installed on the left side of the feed box 7, push plate 158 is slidably installed on the top of the fixed plate 151, and rack 159 is fixedly installed on the left side of push plate 158. Push plate 158 moves backward to push the rolled plastic bags on the fixed plate 151 into the channel of the feed box 7, ensuring that the plastic bags can continuously and evenly enter the channel, reducing production downtime caused by accumulation, thereby improving overall production efficiency. At the same time, it avoids excessive accumulation of plastic bags near the channel of the feed box 7, thereby ensuring a balanced supply of plastic bags in subsequent processing or production.

[0036] The inclined block 153 and the L-shaped rod 155 are both inclined on the side that are close to each other. The rack 156 meshes with the gear 157, the gear 157 meshes with the rack 159, and the slide rod 152 is provided with a spring 2 between it and the outer wall of the feed box 7. The inclined surface ensures that the L-shaped rod 155 can smoothly push the inclined block 153 when it moves. The meshing ensures that the rack 156 can drive the gear 157 to rotate when it moves. The meshing ensures that the gear 157 can drive the rack 159 to move when it rotates. The spring 2 ensures that the slide rod 152 can achieve self-reset.

[0037] The pushing device includes a push plate 161, a connecting rod 162, an inclined block 163, and a push rod 167. The push plate 161 is slidably installed on the inner wall of the feed box 7. The connecting rod 162 is fixedly installed on the left side of the push plate 161. The inclined block 163 is fixedly installed on the end of the connecting rod 162 away from the push plate 161. The push rod 167 is fixedly installed on the left side of the rack 159. When the push plate 161 moves to the right, it can effectively push the plastic bag from the channel of the feed box 7 to the designated position of the conveying device when the plastic bag falls onto the conveyor belt 5 through the channel. This ensures that the plastic bag falls accurately onto the surface of the conveyor belt 5 or other conveying devices, while avoiding the plastic bag from stopping or being delayed at the feed inlet, thereby improving the overall conveying efficiency of the production line.

[0038] The pushing device also includes an inclined rod 164, a moving plate 165, and an inclined block 166. The inclined rod 164 is fixedly installed at the bottom of the inclined block 163, the moving plate 165 is slidably installed at the bottom of the feed box 7, and the inclined block 166 is fixedly installed on the back of the moving plate 165. The moving plate 165 moves forward to avoid the plastic bag directly impacting the surface of the conveying device, reducing wear and damage to the conveying device, and avoiding waste caused by inaccurate or uneven dropping of the plastic bag.

[0039] The inclined plane block 163 and the push rod 167 are both inclined planes on their sides, and the inclined rod 164 and the inclined plane block 166 are both inclined planes on their sides. A spring is installed between the moving plate 165 and the feed box 7. The inclined planes ensure that the push rod 167 can smoothly push the inclined plane block 163 when moving, the inclined rod 164 can smoothly push the inclined plane block 166 when moving, and the spring ensures that the moving plate 165 can achieve self-reset.

[0040] In this embodiment, as the push plate 13 moves to the right, it simultaneously drives the L-shaped rod 155 to move to the right. The L-shaped rod 155's rightward movement pushes the inclined block 153 forward, which in turn drives the slide rod 152 forward. The slide rod 152's forward movement then drives the moving door 154 forward, opening the feed box 7's channel. As the channel opens, the rolled plastic bags fall onto the conveyor belt 5. When the push plate 13 moves to the left, it drives the L-shaped rod 155 to move to the left. The L-shaped rod 155 then stops pushing the inclined block 153, and the slide rod 152, under the action of the spring, begins to move and reset, closing the channel. By repeatedly opening and closing the channel, the amount of plastic bags entering and leaving the production line is reasonably controlled, ensuring that the work rhythm of each link in the production line remains consistent. To avoid congestion or idleness, and to ensure that production does not stop due to excessive or insufficient accumulation of plastic bags, thus reducing waiting time and maintaining the continuity of the production process, the moving door 154 moves forward, driving rack 156 to move forward. The forward movement of rack 156 drives gear 157 to rotate, which in turn drives rack 159 to move backward. The backward movement of rack 159 drives push plate 158 to move backward, pushing the rolled plastic bags on the fixed plate 151 into the channel of the feed box 7. This ensures that the plastic bags can continuously and evenly enter the channel, reducing production downtime caused by accumulation and improving overall production efficiency. At the same time, it prevents excessive accumulation of plastic bags near the channel of the feed box 7, thus ensuring a balanced supply of plastic bags in subsequent processing or production.

[0041] As rack 2 159 moves backward, it drives push rod 167 to move backward. Push rod 167 moves backward, pushing inclined block 2 163 to move to the right. Inclined block 2 163 moves to the right, driving connecting rod 162 to move to the right. Connecting rod 162 moves to the right, driving push plate 3 161 to move to the right. Push plate 3 161 moves to the right, effectively pushing the plastic bag from the feed box 7 to the designated position of the conveyor device when it falls onto the conveyor belt 5 through the channel, ensuring that the plastic bag falls accurately onto the conveyor belt 5 or other conveyor devices. The surface is protected to prevent plastic bags from stagnating or being delayed at the feed inlet, thereby improving the overall conveying efficiency of the production line. As the inclined block 163 moves to the right, it drives the inclined rod 164 to move to the right. The rightward movement of the inclined rod 164 pushes the inclined block 166 to move forward. The forward movement of the inclined block 166 drives the moving plate 165 to move forward. The forward movement of the moving plate 165 prevents the plastic bags from directly impacting the surface of the conveying device, reducing wear and damage to the conveying device, and avoiding waste caused by inaccurate or uneven dropping of plastic bags.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A packaging device for plastic bag production and processing, comprising a workbench (1), characterized in that: The workbench (1) is fixedly equipped with support legs (2) at the bottom. Two rotating shafts (3) are rotatably installed inside the workbench (1). The output end of motor (4) is fixedly installed on the left side of the rotating shaft (3). The two rotating shafts (3) are connected by a conveyor belt (5). A packaging device (6) is provided at the front of the workbench (1). A feeding box (7) is fixedly installed on the top of the workbench (1). A centering device is provided on the top of the workbench (1). The centering device includes a bracket (8), a second motor (9), a rotating rod (10), a fixed rod (11), a sliding column (12), a push plate (13), and an inclined plate (14). The bracket (8) is fixedly installed on the top of the workbench (1), the second motor (9) is fixedly installed on the top of the bracket (8), the rotating rod (10) is fixedly installed on the output end of the second motor (9), the fixed rod (11) is fixedly installed on the circumferential surface of the rotating rod (10), the sliding column (12) slides through the bracket (8), the push plate (13) is fixedly installed on the end of the sliding column (12) near the fixed rod (11), and the inclined plate (14) is fixedly installed on the back of the push plate (13). The feed box (7) is equipped with a control discharge device for controlling the entry and exit of plastic bags and a pushing device for ensuring that the plastic bags can be correctly moved onto the conveyor belt (5). The fixing rod (11) contacts the push plate (13), and a spring is provided between the push plate (13) and the bracket (8); The control discharge device includes a fixed plate (151), a slide rod (152), an inclined block (153), a movable door (154), and an L-shaped rod (155). The fixed plate (151) is fixedly installed on the inner wall of the feed box (7). The slide rod (152) slides through the feed box (7). The inclined block (153) is fixedly installed at the end of the slide rod (152) near the bracket (8). The movable door (154) is fixedly installed at the end of the slide rod (152) away from the inclined block (153). The L-shaped rod (155) is fixedly installed on the top of the push plate (13). The control discharge device also includes rack one (156), gear (157), push plate two (158) and rack two (159). Rack one (156) is fixedly installed on the left side of the movable door (154). Gear (157) is rotatably installed on the left side of the feed box (7). Push plate two (158) is slidably installed on the top of the fixed plate (151). Rack two (159) is fixedly installed on the left side of push plate two (158). The inclined block one (153) and the L-shaped rod (155) are both set as inclined surfaces on their sides that are close to each other. The rack one (156) meshes with the gear (157). The gear (157) meshes with the rack two (159). A spring two is provided between the slide rod (152) and the outer wall of the feed box (7). The pushing device includes a push plate three (161), a connecting rod (162), an inclined block two (163), and a push rod (167). The push plate three (161) is slidably installed on the inner wall of the feed box (7). The connecting rod (162) is fixedly installed on the left side of the push plate three (161). The inclined block two (163) is fixedly installed on the end of the connecting rod (162) away from the push plate three (161). The push rod (167) is fixedly installed on the left side of the rack two (159). The pushing device also includes a ramp (164), a moving plate (165), and a ramp block three (166). The ramp (164) is fixedly installed at the bottom of the ramp block two (163), the moving plate (165) is slidably installed at the bottom of the feed box (7), and the ramp block three (166) is fixedly installed on the back of the moving plate (165). The inclined block two (163) and the push rod (167) are both inclined on the side that are close to each other. The inclined rod (164) and the inclined block three (166) are both inclined on the side that are close to each other. A spring three is provided between the moving plate (165) and the feed box (7).

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