A paper tube feeding device for a bottoming machine

Abstract

The utility model discloses a paper tube feeding device for pasting bottom machine, including receiving feeding mechanism and swing mechanism, receiving feeding mechanism includes receiving feeding subassembly, fender subassembly and pressing material subassembly, and receiving feeding subassembly includes receiving feeding table and receiving feeding drive structure, and the top of receiving feeding table is equipped with the support mesa, and fender subassembly includes fender frame, and fender frame sets up in the support mesa, and the side of fender frame is equipped with with the abutting face of fender of one side of paper tube material stack abutting limit, and receiving feeding drive structure is used for driving receiving feeding table to reciprocate along the first direction relative fender frame, to remove receiving feeding table, and make paper tube material stack fall from the support mesa, and pressing material subassembly is used for the paper tube material stack on the support mesa and is used for pressing tightly and loosening, swing mechanism includes swing frame and swing drive structure, and receiving feeding mechanism installs in swing end, and swing drive structure is used for driving receiving feeding table to swing up and down between receiving material position and the unloading position.

Description

Technical Field

[0001] This utility model relates to the field of paper bag production technology, and in particular to a paper tube feeding device for a bottom-gluing machine. Background Technology

[0002] Currently, paper bag production generally uses a combination of a tube-making machine and a bottom-sealing machine to automate the paper bag processing. The tube-making machine is used to make strips of paper into paper tubes that are open at both ends, and the bottom-sealing machine is used to seal the ends of the paper tubes. The finished paper bags can be directly filled and packaged.

[0003] In existing technology, paper tubes from the tube forming machine are stacked into paper tube stacks for use by the bottom gluing machine. Since the bottom gluing machine requires the paper tube stacks to be stacked from top to bottom for feeding, and the bottom gluing machine picks up the material from the bottom of the paper tube stack for processing, the existing conveying equipment is difficult to match the incoming material of the paper tube stacks with the feeding method of the bottom gluing machine. It is necessary to manually stack the paper tube stacks to the feed inlet of the bottom gluing machine, which is inefficient and labor-intensive. Utility Model Content The purpose of this utility model is to provide a paper tube feeding device for a paste-bottom machine, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: This utility model provides a paper tube feeding device for a paste-bottom machine, comprising: A feeding mechanism includes a feeding assembly, a blocking assembly, and a pressing assembly. The feeding assembly includes a feeding platform and a feeding drive structure. The top of the feeding platform is provided with a supporting surface for feeding and supporting a stack of paper tubes. The blocking assembly includes a blocking frame disposed on the supporting platform. The side of the blocking frame is provided with a blocking contact surface that abuts against and restricts one side of the stack of paper tubes. The feeding drive structure is used to drive the feeding platform to reciprocate relative to the blocking frame in a first direction to drop the stack of paper tubes from the supporting platform. The first direction is the same as the orientation of the blocking contact surface. The pressing assembly is located above the supporting platform and is used to press and release the stack of paper tubes on the supporting platform. The swing mechanism includes a swing frame and a swing drive structure that are connected to each other. The swing frame is provided with a swing end. The receiving and feeding mechanism is installed on the swing end. The swing drive structure is used to drive the swing end to swing up and down, so as to drive the receiving and feeding platform to swing up and down between the receiving position and the unloading position. The receiving position is located above the unloading position.

[0005] The beneficial effects of this paper tube feeding device are: In operation, the oscillating drive structure drives the feeding platform to swing to the receiving position, pushing the paper tube stack onto the support platform. The pressing component presses the paper tube stack on the support platform, and then drives the feeding platform to swing to the unloading position. At this time, the end of the support platform away from the baffle is connected to the inlet end of the bottom gluing machine. The pressing component releases the paper tube stack on the support platform, and the feeding drive structure drives the feeding platform to move relative to the baffle in the first direction. At this time, the feeding platform moves away from the baffle contact surface. Under the restriction of the baffle's side contact with the paper tube stack in the direction of movement of the feeding platform, the paper tube stack falls from the receiving frame and is stacked at the inlet end of the bottom gluing machine, thus realizing the automatic feeding of the paper tube stack in the bottom gluing machine. By pressing and releasing the paper tube stack on the support platform by the pressing component, the paper tube stack is prevented from falling off during the oscillation.

[0006] As a further improvement to the above technical solution, the receiving and feeding platform includes a plurality of support strips arranged at intervals along the second direction, and a hollow groove extending along the first direction is formed between two adjacent support strips. The baffle includes a plurality of baffle plates arranged at intervals along the second direction. One end of the baffle plate facing the receiving and feeding platform is located in the hollow groove, and the other end of the baffle plate facing away from the receiving and feeding platform extends to the top of the receiving and feeding platform. The second direction is perpendicular to the first direction and the normal vector of the supporting platform.

[0007] As a further improvement to the above technical solution, the receiving and feeding platform includes a connecting seat, and one end of the plurality of supporting plates away from the swing end is fixedly connected to the connecting seat.

[0008] As a further improvement to the above technical solution, the material blocking assembly further includes a material blocking adjustment structure, which is connected to the material blocking frame in a transmission manner. The material blocking adjustment structure is used to drive the material blocking frame to move relative to the receiving and feeding platform along the first direction, so as to adjust the initial relative position between the material blocking frame and the receiving and feeding platform.

[0009] As a further improvement to the above technical solution, the material stop is slidably mounted on the swing frame along the first direction, and the material stop adjustment structure includes an adjustment screw mounted on the swing frame and a nut seat that is threadedly engaged with the adjustment screw, and the nut seat is fixedly connected to the material stop.

[0010] As a further improvement to the above technical solution, the adjusting screw is connected to a handwheel.

[0011] As a further improvement to the above technical solution, the pressing assembly includes at least one pressing module installed on the baffle frame. The pressing module includes a pressing plate and a pressure driving unit. The pressing plate is located above the support platform, and the pressure driving unit is used to drive the pressing plate closer to and away from the support platform.

[0012] As a further improvement to the above technical solution, the receiving and feeding platform is slidably installed on the swing frame along the first direction, and the receiving and feeding drive structure is fixedly installed on the swing frame.

[0013] As a further improvement to the above technical solution, a feeding mechanism is also included. The feeding mechanism includes a feeding conveyor and a pushing component. When the receiving and feeding platform swings to the receiving position, the end of the supporting platform and the material blocking contact surface facing the same direction is connected to the discharge end of the feeding conveyor. The pushing component is used to push the paper tube stack from the feeding conveyor to the supporting platform.

[0014] As a further improvement to the above technical solution, the pushing assembly includes a pushing plate disposed on the feeding conveyor platform and a pushing drive structure for driving the pushing plate closer to and away from the receiving and feeding platform.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a front view of an embodiment of the paper tube feeding device provided by this utility model, in which the receiving and feeding platform is located at the receiving position. Figure 2 This is a schematic diagram of the swing frame and feeding mechanism of one embodiment of the paper tube feeding device provided by this utility model. Figure 3 yes Figure 1 A magnified view of part A in the middle; Figure 4 This is a front view of an embodiment of the paper tube feeding device provided by this utility model, in which the receiving and feeding platform is located at the unloading position; Figure 5 yes Figure 2 A magnified view of part B in the middle section; Icon labels: Feeding mechanism 100; feeding assembly 110; feeding platform 111; feeding drive structure 112; support table 113; support strip 114; hollow groove 115; connecting seat 116; baffle assembly 120; baffle frame 121; baffle adjustment structure 122; adjusting screw 1221; nut seat 1222; handwheel 1223; baffle plate 123; baffle contact surface 124; pressing assembly 130; pressing module 131; pressure plate 1311; pressure drive unit 1312; Swing mechanism 200; swing frame 210; swing end 211; counterweight end 212; counterweight block 213; swing drive structure 220; Paper tube stack 300; 400 racks; Feeding mechanism 500; feeding conveyor 510; pushing assembly 520; pushing plate 521. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0022] Reference Figures 1-5The paper tube feeding device for a paste-bottom machine of this utility model is illustrated in the following embodiments: like Figure 1 As shown, the paper tube feeding device of this utility model includes a feeding mechanism 100 and a swing mechanism 200.

[0023] The feeding mechanism 100 includes a feeding assembly 110, a blocking assembly 120, and a pressing assembly 130.

[0024] like Figure 2 As shown, the feeding assembly 110 in this embodiment includes a feeding platform 111 and a feeding drive structure 112, as follows: Figure 3 As shown, the top of the receiving and feeding platform 111 is provided with a support platform 113 for receiving and supporting the paper tube stack 300, and the material blocking assembly 120 includes a material blocking frame 121, which is provided on the support platform 113. The side of the material blocking frame 121 is provided with a material blocking contact surface 124 that abuts against and restricts one side of the paper tube stack 300. It can be understood that the material blocking contact surface 124 is perpendicular to the support platform 113, the bottom surface of the paper tube stack 300 abuts against the support platform 113, and one side of the paper tube stack 300 abuts against the material blocking contact surface 124.

[0025] In this embodiment, the feeding drive structure 112 is used to drive the feeding platform 111 to reciprocate relative to the baffle frame 121 along a first direction, so as to push the paper tube stack 300 out of the support platform 113. The first direction is the same as the orientation of the baffle contact surface 124. It can be understood that, as Figure 4 As shown, when the feeding drive structure 112 drives the feeding platform 111 to move relative to the baffle frame 121 in the direction away from the baffle contact surface 124, the paper tube stack 300 will be blocked by the baffle contact surface 124. The baffle contact surface 124 and the paper tube stack 300 are relatively stationary, while the support platform 113 moves relative to the baffle contact surface 124, pushing the paper tube stack 300 out of the support platform 113 through the baffle contact surface 124.

[0026] like Figure 3 As shown, the pressing assembly 130 of this embodiment is located above the support platform 113. The pressing assembly 130 is used to press and release the paper tube stack 300 on the support platform 113. When the paper tube stack 300 is placed on the support platform 113, the pressing assembly 130 presses the paper tube stack 300 on the support platform 113 to prevent relative movement between the paper tube stack 300 and the support platform 113. When it is necessary to push the paper tube stack 300 off the support platform 113, the paper tube stack 300 on the support platform 113 is released.

[0027] like Figure 1 and Figure 2As shown, the swing mechanism 200 of this embodiment includes a swing frame 210 and a swing drive structure 220 that are connected to each other in a transmission manner. The swing frame 210 is provided with a swing end 211. The feeding mechanism 100 is integrally mounted on the swing end 211. The swing drive structure 220 is used to drive the swing end 211 to swing up and down, so as to drive the feeding platform 111 to swing up and down between the receiving position and the unloading position. The receiving position is located above the unloading position, as shown in the figure. Figure 1 As shown, when the receiving and feeding platform 111 is in the receiving position, the support platform 113 in this embodiment is horizontally arranged to facilitate the conveying of the paper tube stack 300 onto the support platform 113, as follows. Figure 4 As shown, when the receiving and feeding platform 111 is in the unloading position, the supporting platform 113 is set at an inclination so that the paper tube stack 300 is pushed at an inclination into the gluing machine.

[0028] In some other embodiments, when the receiving and feeding platform 111 is in the receiving position, the supporting platform 113 may also be tilted, at which time the supporting platform 113 and the blocking contact surface 124 support the paper tube stack 300.

[0029] In operation, the oscillating drive structure 220 drives the receiving and feeding platform 111 to swing to the receiving position, pushing the paper tube stack 300 onto the support platform 113. The pressing assembly 130 presses the paper tube stack 300 on the support platform 113, and then drives the receiving and feeding platform 111 to swing to the unloading position. At this time, the end of the support platform 113 away from the baffle 121 is connected to the inlet end of the gluing machine, and the pressing assembly 130 releases the support platform. The paper tube stack 300 on 113 is driven by the feeding drive structure 112 to move the feeding platform 111 relative to the baffle frame 121 in the first direction. At this time, the feeding platform 111 moves to the side away from the baffle abutment surface 124. Under the lateral abutment restriction of the baffle frame 121 on the paper tube stack 300, the paper tube stack 300 is pushed out from the receiving frame and stacked at the inlet end of the bottom gluing machine, thereby realizing the automatic feeding of the paper tube stack 300 in the bottom gluing machine.

[0030] Furthermore, such as Figure 5 As shown, the receiving and feeding platform 111 of this embodiment includes a plurality of support strips 114 arranged at intervals along the second direction, and a hollow groove 115 extending along the first direction is formed between two adjacent support strips 114.

[0031] like Figure 5As shown, the baffle 121 of this embodiment includes a plurality of baffle plates 123 arranged at intervals along the second direction. One end of the baffle plate 123 facing the receiving and feeding platform 111 is provided in the hollow groove 115, and the other end of the baffle plate 123 facing away from the receiving and feeding platform 111 extends to the top of the receiving and feeding platform 111. The second direction is perpendicular to the first direction and the normal vector of the supporting platform 113, so that the baffle plate 123 and the supporting plate strip 114 are staggered and intersected, so that the baffle contact surface 124 can abut and restrict the sides of all the paper tubes in the paper tube stack 300.

[0032] like Figure 1 and Figure 5 As shown, the receiving and feeding platform 111 in this embodiment includes a connecting seat 116, and one end of a plurality of supporting strips 114 away from the swing end 211 is fixedly connected to the connecting seat 116, as shown. Figure 4 As shown, when the receiving and feeding platform 111 is in the receiving position, the normal vector of the support platform 113 is in the up and down direction. In this embodiment, the first direction is defined as the left and right direction, and the second direction is the front and back direction. It can be understood that the right ends of the multiple support strips 114 are fixedly connected to the connecting seat 116, and the multiple support strips 114 and multiple baffles 123 are arranged at intervals along the front and back direction. The hollow groove 115 extends along the left and right direction. At this time, the left end of the support strip 114 is for feeding and discharging the paper tube stack 300.

[0033] Furthermore, such as Figure 3 and Figure 5 As shown, the material blocking assembly 120 in this embodiment also includes a material blocking adjustment structure 122. The material blocking adjustment structure 122 is connected to the material blocking frame 121 in a transmission manner. The material blocking adjustment structure 122 is used to drive the material blocking frame 121 to move relative to the receiving and feeding table 111 in a first direction, so as to adjust the initial relative position between the material blocking frame 121 and the receiving and feeding table 111 to match paper tubes of different sizes.

[0034] like Figure 5 As shown, in this embodiment, the baffle 121 is slidably mounted on the swing frame 210 along the first direction. The baffle adjustment structure 122 includes an adjusting screw 1221 mounted on the swing frame 210 and a nut seat 1222 threadedly engaged with the adjusting screw 1221. The nut seat 1222 is fixedly connected to the baffle 121, and the adjusting screw 1221 is connected to a handwheel 1223. By rotating the adjusting screw 1221, the nut seat 1222 is moved along the first direction, thereby moving the baffle 121 relative to the feeding table 111 along the first direction. The adjusting screw 1221 and the nut seat 1222 also have a self-locking function.

[0035] like Figure 5As shown, the pressing assembly 130 of this embodiment includes at least one pressing module 131 mounted on the baffle frame 121. The pressing module 131 moves and adjusts with the baffle frame 121 to match paper tubes of different sizes. Figure 3 As shown, the pressing module 131 includes a pressing plate 1311 and a pressure driving unit 1312. The pressing plate 1311 is located above the support platform 113. The pressure driving unit 1312 is used to drive the pressing plate 1311 to move closer to and away from the support platform 113. The pressing plate 1311 abuts against the top of the paper tube stack 300 to clamp the paper tube stack 300 between the pressing plate 1311 and the support platform 113.

[0036] In this embodiment, multiple pressing modules 131 are provided, and the multiple pressing modules 131 are arranged at intervals along the second direction. The positions of the pressing modules 131 correspond one-to-one with the supporting strips 114.

[0037] The pressure drive unit 1312 can adopt a linear drive structure such as an electric pole or a cylinder.

[0038] In this embodiment, the receiving and feeding platform 111 is slidably mounted on the swing frame 210 along the first direction, and the receiving and feeding drive structure 112 is fixedly mounted on the swing frame 210. The receiving and feeding drive structure 112 can be a linear drive structure such as an electric pole or a cylinder.

[0039] like Figure 1 As shown, this embodiment also includes a frame 400, and a swing frame 210 is rotatably mounted on the frame 400, as shown. Figure 2 As shown, the end of the swing frame 210 away from the swing end 211 is the counterweight end 212. In this embodiment, a counterweight block 213 is provided at the counterweight end 212 to reduce the torque requirement on the swing drive structure 220. The swing drive structure 220 in this embodiment includes a swing linear drive unit. The telescopic drive end of the swing linear drive unit is connected to a steel cable. The steel cable is wound around several guide wheels of the frame 400 and then connected to the swing frame 210. The swing end 211 is pulled upward by the steel cable, while the downward swing of the swing end 211 is provided by the gravity of the paper tube stack 300 itself.

[0040] like Figure 1 and Figure 4 As shown, this embodiment also includes a feeding mechanism 500, which includes a feeding conveyor 510 and a pushing assembly 520. When the receiving and feeding platform 111 swings to the receiving position, the end of the supporting platform 113 that faces the material blocking contact surface 124 in the same direction connects with the discharge end of the feeding conveyor 510, as shown. Figure 1 As shown, the left end of the support platform 113 is connected to the feeding conveyor 510, and the pushing assembly 520 is used to push the paper tube stack 300 from the feeding conveyor 510 to the support platform 113.

[0041] The pushing assembly 520 in this embodiment includes a pushing plate 521 disposed on the feeding conveyor 510 and a pushing drive structure for driving the pushing plate 521 to move closer to and away from the receiving and feeding platform 111. The pushing drive structure can be a cylinder or an electric rod.

[0042] The working principle of the paper tube feeding device of this utility model is as follows: The paper tube feeding device is installed above the inlet end of the gluing machine. The feeding conveyor 510 is connected to an external conveyor line. After the paper tube stack 300 is conveyed to the feeding conveyor 510, the swing drive structure 220 drives the receiving platform 111 to swing to the receiving position. The left end of the support platform 113 is connected to the feeding conveyor 510. The pushing drive structure drives the pushing plate 521 to move from left to right, pushing the paper tube stack 300 from the feeding conveyor 510 to the support platform 113. Then, the pressing component 130 presses the paper tube stack 300 on the support platform 113. Then, the receiving and feeding platform 111 is swung to the unloading position. At this time, the end of the supporting platform 113 away from the baffle 121 is connected to the inlet end of the bottom pasting machine. The pressing component 130 releases the paper tube stack 300 on the supporting platform 113. The receiving and feeding drive structure 112 drives the receiving and feeding platform 111 to move relative to the baffle 121 in the first direction. At this time, the receiving and feeding platform 111 moves to the side away from the baffle contact surface 124. Under the side contact restriction of the baffle 121 on the paper tube stack 300, the paper tube stack 300 is pushed out from the receiving frame and stacked at the inlet end of the bottom pasting machine to realize the automatic feeding of the paper tube stack 300 in the bottom pasting machine.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A paper tube feeding device for a bottom-gluing machine, characterized in that, include: A feeding mechanism includes a feeding assembly, a blocking assembly, and a pressing assembly. The feeding assembly includes a feeding platform and a feeding drive structure. The top of the feeding platform is provided with a supporting surface for feeding and supporting a stack of paper tubes. The blocking assembly includes a blocking frame disposed on the supporting platform. The side of the blocking frame is provided with a blocking contact surface that abuts against and restricts one side of the stack of paper tubes. The feeding drive structure is used to drive the feeding platform to reciprocate relative to the blocking frame in a first direction to drop the stack of paper tubes from the supporting platform. The first direction is the same as the orientation of the blocking contact surface. The pressing assembly is located above the supporting platform and is used to press and release the stack of paper tubes on the supporting platform. The swing mechanism includes a swing frame and a swing drive structure that are connected to each other. The swing frame is provided with a swing end. The receiving and feeding mechanism is installed on the swing end. The swing drive structure is used to drive the swing end to swing up and down, so as to drive the receiving and feeding platform to swing up and down between the receiving position and the unloading position. The receiving position is located above the unloading position.

2. The paper tube feeding device according to claim 1, characterized in that: The receiving and feeding platform includes a plurality of support strips arranged at intervals along the second direction, and a hollow groove extending along the first direction is formed between two adjacent support strips; The baffle includes a plurality of baffle plates arranged at intervals along the second direction. One end of the baffle plate facing the receiving and feeding platform is located in the hollow groove, and the other end of the baffle plate facing away from the receiving and feeding platform extends to the top of the receiving and feeding platform. The second direction is perpendicular to the first direction and the normal vector of the supporting platform.

3. The paper tube feeding device according to claim 2, characterized in that: The receiving and feeding platform includes a connecting seat, and one end of the plurality of supporting strips away from the swing end is fixedly connected to the connecting seat.

4. The paper tube feeding device according to claim 1, characterized in that: The material blocking assembly further includes a material blocking adjustment structure, which is connected to the material blocking frame in a transmission manner. The material blocking adjustment structure is used to drive the material blocking frame to move relative to the receiving and feeding platform along the first direction, so as to adjust the initial relative position between the material blocking frame and the receiving and feeding platform.

5. The paper tube feeding device according to claim 4, characterized in that: The material stop frame is slidably mounted on the swing frame along the first direction. The material stop adjustment structure includes an adjustment screw mounted on the swing frame and a nut seat that is threadedly engaged with the adjustment screw. The nut seat is fixedly connected to the material stop frame.

6. The paper tube feeding device according to claim 5, characterized in that: The adjusting screw is connected to a handwheel.

7. The paper tube feeding device according to claim 4, characterized in that: The pressing assembly includes at least one pressing module mounted on the baffle frame. The pressing module includes a pressing plate and a pressure driving unit. The pressing plate is located above the support platform, and the pressure driving unit is used to move the pressing plate closer to and away from the support platform.

8. The paper tube feeding device according to claim 1, characterized in that: The receiving and feeding platform is slidably mounted on the swing frame along the first direction, and the receiving and feeding drive structure is fixedly mounted on the swing frame.

9. The paper tube feeding device according to claim 1, characterized in that: It also includes a feeding mechanism, which includes a feeding conveyor and a pushing component. When the feeding platform swings to the receiving position, the end of the supporting platform and the material blocking contact surface facing the same direction is connected to the discharge end of the feeding conveyor. The pushing component is used to push the paper tube stack from the feeding conveyor to the supporting platform.

10. The paper tube feeding device according to claim 9, characterized in that: The pushing assembly includes a pushing plate disposed on the feeding conveyor platform and a pushing drive structure for driving the pushing plate closer to and away from the receiving and feeding platform.

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