Bottom plate feeding device of paper box forming machine

Abstract

The utility model relates to a bottom plate feeding device of a paper box forming machine, which is characterized in that the bottom of a stock bin is provided with a push plate output device, the top of the stock bin is connected with a longitudinal moving feeding conveying belt, the longitudinal moving feeding conveying belt is in transmission connection with a feeding driving device, and the stock bin is further provided with a feeding signal sensor for detecting that the stacking height of a bottom plate drops to a set position. And the feeding driving device is connected with the feeding signal sensor. A stack of stacked bottom plates can be pre-stored and arranged on the longitudinally-moving feeding conveying belt, pre-placement operation is convenient, the supply capacity is enhanced, long-time continuous feeding can be achieved through the bottom plates stored on the longitudinally-moving feeding conveying belt, the longitudinally-moving feeding conveying belt can cooperate with a feeding signal sensor to control a feeding driving device to operate, and the feeding efficiency is improved. Materials are supplemented in time according to the height of the bottom plate materials in the stock bin, the problem that the bottom plate materials are frequently supplemented to the stock bin manually is avoided, and the number of the bottom plates in the stock bin does not need to be paid attention to manually all the time.

Description

Technical Field

[0001] The utility model relates to a bottom plate feeding device of a paper box forming machine. Background Art

[0002] During the forming process of a paper box, the bottom plate (for making the box bottom) can be assembled onto a horizontal paper box mold (which can be called a mold) and connected to the box body surrounding the mold to form the box body structure of the paper box. Among them, during the forming process, it is necessary to continuously supplement the bottom plates into the equipment, and all are in manual mode. It is necessary to always pay attention to the number of bottom plates (such as in the bin), ensure timely replenishment of the bottom plates, avoid equipment shutdown, which is time-consuming and laborious, resulting in relatively high production costs and short supply capacity. If the personnel leave for a period of time, it may cause equipment shutdown.

[0003] In addition, for a paper box forming machine with two heads, it is difficult for one person to take care of and supplement the bottom plates in the bins on both sides, and it is very easy to occur the situation of material shortage and shutdown. In addition, the paper box forming machine also produces paper boxes of different specifications and sizes, and the specifications and sizes of the bottom plates will also change accordingly. Summary of the Utility Model

[0004] In view of the technical problems existing in the background art, the utility model aims to provide a bottom plate feeding device of a paper box forming machine that can replenish materials in a timely manner and has a relatively long supply capacity.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: the bottom plate feeding device of a paper box forming machine includes a bin for stacking bottom plates, and a push plate output device is arranged at the bottom of the bin. The push plate output device includes a single-plate transverse moving discharging push head, and is characterized in that: a longitudinal moving feeding conveyor belt is connected to the top of the bin, the longitudinal moving feeding conveyor belt is drivingly connected to a feeding driving device, and the bin is also equipped with a feeding signal sensor for detecting that the stacking height of the bottom plates in the bin drops to a set position, and the feeding driving device is connected to the feeding signal sensor.

[0006] The following various optimizations or supplementary explanations can be carried out on the above technical scheme respectively.

[0007] For example, the height position of the feeding signal sensor is adjusted and set.

[0008] Among them, the set position is located at the top of the bin, and the set position is flush with the conveying surface of the longitudinal moving feeding conveyor belt or the set position is slightly lower than the conveying surface of the longitudinal moving feeding conveyor belt.

[0009] Among them, the set position is not higher than the conveying surface of the longitudinal moving feeding conveyor belt.

[0010] For example, the silo includes a left supporting rail and a right supporting rail, which are respectively arranged horizontally. The single-board transverse feeding pusher is disposed between the left supporting rail and the right supporting rail, and the single-board transverse feeding pusher is installed on a transverse seat, which is disposed on a transverse rail. The silo further includes a left silo stop and a right silo stop, the left silo stop is arranged above the left supporting rail, and the right silo stop is arranged above the right supporting rail. The silo further includes a front silo stop and a rear silo stop, the front silo stop is disposed in front of the left silo stop and the right silo stop, and there is a single-board discharging gap between the front silo stop and the lower left supporting rail and right supporting rail; the rear silo stop is disposed behind the left silo stop and the right silo stop, and the left silo stop, the right silo stop, the front silo stop and the rear silo stop cooperate to enclose a stacking accommodation space above the left supporting rail and the right supporting rail.

[0011] Among them, the front silo stop includes a front left silo stop and a front right silo stop, the rear silo stop includes a rear left silo stop and a rear right silo stop, the front left silo stop and the rear left silo stop are respectively arranged on the front and rear sides of the left silo stop, the front right silo stop and the rear right silo stop are respectively arranged on the front and rear sides of the right silo stop, and the left silo stop, the right silo stop, the front left silo stop, the front right silo stop, the rear left silo stop and the rear right silo stop cooperate to enclose a stacking accommodation space above the left supporting rail and the right supporting rail.

[0012] It can be further optimized that the left supporting rail is disposed on a longitudinal rail, the front left silo stop is adjusted in height on the left silo stop, the front right silo stop is adjusted in height on the right silo stop, the rear left silo stop is adjusted in the front and rear positions on the left supporting rail, and the rear right silo stop is adjusted in the front and rear positions on the right supporting rail.

[0013] In addition, the left silo stop can be installed on the left supporting rail, the right silo stop can be installed on the right supporting rail, and the right silo stop is disposed below the input end of the longitudinal feeding conveyor belt; the right supporting rail is relatively fixedly arranged; the upper part of the left silo stop further has a longitudinal feeding in-place blocking portion.

[0014] Even further optimized, front guiding material into the silo side plates and rear guiding material into the silo side plates are respectively arranged corresponding to the front and rear sides of the top of the silo, and the front guiding material into the silo side plates and the rear guiding material into the silo side plates are respectively arranged on both sides of the conveying direction of the longitudinal feeding conveyor belt; the upper part of the left silo stop is located between the front guiding material into the silo side plate and the rear guiding material into the silo side plate.

[0015] For additional optimization, the front guiding material into the silo side plate is relatively fixedly arranged, and the rear guiding material into the silo side plate is adjusted in the front and rear positions relatively.

[0016] For another example, the feeding signal sensor uses a photoelectric eye; the photoelectric eye is arranged for horizontal irradiation; the set position is adjusted in height; the feeding signal sensor is adjusted in height on the front guiding material into the silo side plate or the rear guiding material into the silo side plate.

[0017] The beneficial effects of the present utility model are as follows. The bottom plate feeding device of the carton forming machine can pre-store and arrange a pile of stacked bottom plates on the longitudinal feeding conveyor belt. The pre-placement operation is convenient, the supply capacity is enhanced, and long-term continuous feeding can be achieved by using the bottom plates stored on the longitudinal feeding conveyor belt. Moreover, the longitudinal feeding conveyor belt can be operated (such as starting and stopping) by the feeding signal sensor in cooperation with the feeding driving device, and can replenish the feeding in the bin (the material bin) in a timely manner according to the height of the bottom plate material in the bin, avoiding the problem of manually frequently replenishing the bottom plate material in the bin, eliminating the need for manual attention to the number of bottom plates in the bin at all times, being more efficient, and the time for the operator to leave for a period of time can also be relatively extended after the supply capacity is enhanced, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following describes the implementation manners, relevant details and working principles of the embodiments of the present utility model in conjunction with the drawings.

[0019] Figure 1 It is a schematic top view of the structure of the present utility model.

[0020] Figure 2 is Figure 1 a schematic three-dimensional structure diagram of

[0021] In the figure:

[0022] 1. Material bin; 11. Left supporting rail; 12. Right supporting rail; 13. Left bin stopper; 14. Right bin stopper; 15. Front bin stopper; 16. Rear bin stopper; 17. Longitudinal rail;

[0023] 151. Front left bin stopper; 161. Rear left bin stopper; 162. Rear right bin stopper;

[0024] 131. Longitudinal feeding in-place blocking part;

[0025] 100. Positioning block; 101. Upper limiting block;

[0026] 2. Pusher plate output device; 20. Single-plate transverse moving discharging pusher head; 21. Transverse moving seat; 22. Transverse rail;

[0027] 3. Longitudinal feeding conveyor belt; 30. Feeding driving device; 31. Front guiding material into bin side plate; 32. Rear guiding material into bin side plate;

[0028] 4. Feeding signal sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the implementation manners of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Referring to the accompanying drawings, in the embodiment of this implementation manner, the bottom plate feeding device of the carton forming machine includes a bin 1 for stacking bottom plates, that is, the bin 1 has a stacking accommodation space for stacking bottom plates layer by layer. A push plate output device 2 is provided at the bottom of the bin 1. Among them, the push plate output device 2 includes a single-plate transverse moving discharge push head 20. The single-plate transverse moving discharge push head 20 cooperates to push out the bottom plates at the bottom of the bin 1 one by one. The transverse movement of the single-plate transverse moving discharge push head 20 can be driven by a motor or a cylinder, etc.

[0031] For efficient operation, to avoid the problem of equipment shutdown caused by insufficient bottom plate materials in the bin 1, and to have a long supply capacity and the ability to supply materials for a long time to avoid the problem of frequent manual replenishment and make it more efficient; in this implementation manner, a longitudinal moving feeding conveyor belt 3 is connected to the top of the bin 1. A stack of stacked bottom plates can be arranged and placed on the longitudinal moving feeding conveyor belt 3, and the longitudinal moving feeding conveyor belt 3 gradually transports a stack of stacked bottom plates to the bin 1; among them, the longitudinal moving feeding conveyor belt 3 is drivingly connected to a feeding driving device 30 (such as including a driving motor, such as a servo motor, etc.), and the feeding driving device 30 cooperates to drive the longitudinal moving feeding conveyor belt 3 to operate for feeding; and, the bin 1 is also equipped with a feeding signal sensor 4 for detecting that the stacking height of the bottom plates therein (i.e., in the bin 1) drops to a set position. The feeding signal sensor 4 can detect that the stacking height of the bottom plates in the bin 1 drops to the set position. When the bottom plates stacked (at the bottom) in the bin 1 are pushed out one by one, the stacking height of the bottom plates (referring to the height position of the topmost bottom plate) will gradually decrease. When it gradually drops to the set position, the feeding signal sensor 4 will detect this signal. After detecting the signal that the stacking height of the bottom plates in the bin 1 drops to the set position, the feeding driving device 30 is connected to the feeding signal sensor 4, and the feeding signal sensor 4 cooperates to control the operation of the feeding driving device 30 (such as starting and stopping the driving motor. The way of the sensor cooperating to control the operation is a mature technology), and the set position is set according to requirements (manually). Among them, the conveying length of the longitudinal moving feeding conveyor belt 3 is set according to requirements, so as to place a suitable number of stacks of bottom plate materials according to requirements.

[0032] The bottom plate feeding device of this carton forming machine can pre-store and arrange a stack of bottom plates stacked on the longitudinal feeding conveyor belt 3. The pre-placement operation is convenient, enhancing the supply capacity. It can achieve long-term continuous feeding by using the bottom plates stored on the longitudinal feeding conveyor belt 3. Moreover, the longitudinal feeding conveyor belt 3 can be controlled by the feeding signal sensor 4 to cooperate with the feeding drive device 30 to operate (such as start and stop). It can replenish the supply to the inside (in the bin 1) in a timely manner according to the height of the bottom plate material in the bin 1, avoiding the problem of manually frequently replenishing the bottom plate material in the bin 1. There is no need for manual attention to the quantity of bottom plates in the bin 1 all the time, which is more efficient. After the supply capacity is enhanced, the length of time that the operator can leave for a period of time is also relatively increased, which is more convenient.

[0033] Based on the above embodiments respectively, the following optimizations or further explanations can be carried out.

[0034] For example, the height position of the feeding signal sensor 4 is adjusted and set to adjust to a suitable height position, and the height of the stacked bottom plates is debugged to drop to the set position. That is, the set position can depend on the height position of the feeding signal sensor 4. Through the height position adjustment and setting, a suitable height can be debugged to ensure a smooth connection, and the bottom plates on the longitudinal feeding conveyor belt 3 can be connected and conveyed to the bin 1 more smoothly.

[0035] Among them, the set position is not higher than the conveying surface of the longitudinal feeding conveyor belt 3 to avoid blocking the longitudinal feeding conveyor. For example, the set position is set flush with the conveying surface of the longitudinal feeding conveyor belt 3; or, the set position is slightly lower than the conveying surface of the longitudinal feeding conveyor belt, for example, with a height difference of 1-3 bottom plate thicknesses, to avoid problems such as material jamming or uneven stacking caused by too large a drop. Among them, the set position is located at the top of the bin 1.

[0036] In addition, the silo 1 includes a left supporting rail 11 and a right supporting rail 12. The left supporting rail 11 and the right supporting rail 12 are respectively arranged horizontally. The single-board transverse feeding push head 20 is disposed between the left supporting rail 11 and the right supporting rail 12. The left supporting rail 11 and the right supporting rail 12 can cooperate to support the bottom plate in the silo 1, and can also cooperate to support the bottom plate when it is pushed out by the single-board transverse feeding push head 20. Among them, on the ends of the left supporting rail 11 and the right supporting rail 12, positioning blocks 100 (including front side blocks and side blocks) can be provided to cooperate with the positioning of the bottom plate, so that the bottom plate can be more accurately pushed into place; the positioning blocks 100 can be disassembled and assembled by fasteners, which is convenient for adjusting the position or replacing the size specifications. On the paths of the left supporting rail 11 and the right supporting rail 12, a limiting upper block 101 can also be provided. When the bottom plate is pushed on the left supporting rail 11 and the right supporting rail 12, the bottom plate is restricted to be pushed forward in the gap between the limiting upper block 101 and the (left and right) supporting rails, avoiding flying upward and being more stable. After the bottom plate is pushed into place, it can be transferred to the forming die by subsequent structures (such as a lifting and rotating plate with air suction holes, etc.). Among them, the single-board transverse feeding push head 20 is installed on the transverse seat 21. The transverse seat 21 is disposed on the transverse rail 22. The transverse seat 21 can move on the transverse rail 22. The transverse seat 21 can be driven back and forth by a cylinder or a motor, etc., so as to drive the single-board transverse feeding push head 20 to move back and forth horizontally. Generally, the top of the single-board transverse feeding push head 20 has a retracting and lifting lifting surface (such as an inclined surface or a curved surface). When the single-board transverse feeding push head 20 retracts, it can lift the bottom plate in the silo 1, and the single-board transverse feeding push head 20 can retract smoothly; or, the single-board transverse feeding push head 20 has a supporting and holding surface for holding the bottom plate of the silo 1 (except the bottommost bottom plate). During the forward and backward movement of the single-board transverse feeding push head 20, it can hold the other bottom plates in the silo 1 except the bottommost bottom plate, and the single-board transverse feeding push head 20 can retract smoothly; in addition, mature technologies will not be elaborated.

[0037] The silo 1 further includes a left silo baffle 13 and a right silo baffle 14 (both can be baffles). The left silo baffle 13 is disposed above the left supporting rail 11, and the right silo baffle 14 is disposed above the right supporting rail 12. The silo 1 further includes a front silo baffle 15 and a rear silo baffle 16. The front silo baffle 15 is disposed in front of the left silo baffle 13 and the right silo baffle 14. A single-board discharging gap (for a single bottom plate to be pushed out by the single-board transverse feeding push head 20) is left between the front silo baffle 15 and the lower left supporting rail 11 and right supporting rail 12; the rear silo baffle 16 is disposed behind the left silo baffle 13 and the right silo baffle 14. The left silo baffle 13, the right silo baffle 14, the front silo baffle 15 and the rear silo baffle 16 cooperate to enclose a stacking and accommodating space above the left supporting rail 11 and the right supporting rail 12, and the bottom plates will be stacked and placed in the stacking and accommodating space.

[0038] For example, the front bin baffle 15 includes a front left bin baffle 151 and a front right bin baffle. The rear bin baffle 16 includes a rear left bin baffle 161 and a rear right bin baffle 162. The front left bin baffle 151 and the rear left bin baffle 161 are respectively arranged on the front and rear sides of the left bin baffle 13, and the front right bin baffle and the rear right bin baffle 162 are respectively arranged on the front and rear sides of the right bin baffle 14. The left bin baffle 13, the right bin baffle 14, the front left bin baffle 151, the front right bin baffle, the rear left bin baffle 161 and the rear right bin baffle 162 can cooperate to enclose a stacking accommodation space above the left support rail 11 and the right support rail 12.

[0039] In addition, the left support rail 11 is arranged on the longitudinal track 17, so that the left support rail 11 can adjust its longitudinal position. The components on the left support rail 11 (such as the left bin baffle 13, the front left bin baffle 151, and the rear left bin baffle 161) are adjusted together in the (left and right) longitudinal position. The rear left bin baffle 161 is adjusted in the front and rear position on the left support rail 11, and the rear right bin baffle 162 is adjusted in the front and rear position on the right support rail 12, so as to be adjusted to adapt to the bottom plates of different length, width and size specifications after adjustment. The front left bin baffle 151 is adjusted in the height position on the left bin baffle 13, and the front right bin baffle is adjusted in the height position on the right bin baffle 14. The size of the single-board discharge gap can be adjusted, so as to be adjusted to adapt to the bottom plates of different thickness specifications after adjustment. Among them, the relative (front and rear) position of the front side of the bin 1 remains unchanged, and the transverse forward stroke of the single-board transverse movement discharge push head 20 remains relatively unchanged. For example, when driven by a cylinder, the relative stroke is relatively stable.

[0040] Among them, the left bin baffle 13 is installed on the left support rail 11, and the right bin baffle 14 is installed on the right support rail 12. The right bin baffle 14 is arranged below the input end of the longitudinal movement feeding conveyor belt 3, and is smoothly connected without affecting the input of the bottom plate; the right support rail 12 is relatively fixedly arranged. Only by adjusting the position of the left support rail 11 on the longitudinal track 17 can the left and right positions be adjusted. The right support rail 12 and the components on it do not need to be adjusted additionally left and right, and the relative position with the longitudinal movement feeding conveyor belt 3 does not need to be adjusted additionally, and the matching connection structure is relatively stable. The upper part of the left bin baffle 13 also has a longitudinal movement feeding in-place blocking part 131. When the longitudinal movement feeding conveyor belt 3 longitudinally moves the bottom plate into the bin 1, it can be blocked by the longitudinal movement feeding in-place blocking part 131 to ensure that the bottom plate arrives smoothly.

[0041] On the front and rear sides of the top of the bin 1, a front guide material into the bin side plate 31 and a rear guide material into the bin side plate 32 are respectively arranged correspondingly (which can be L-shaped plates respectively). The front guide material into the bin side plate 31 and the rear guide material into the bin side plate 32 are respectively arranged on both sides of the conveying direction of the longitudinal movement feeding conveyor belt 3 to ensure that at the connection between the longitudinal movement feeding conveyor belt 3 and the bin 1, the front guide material into the bin side plate 31 and the rear guide material into the bin side plate 32 cooperate to limit and correct the front and rear positions of the bottom plate and guide it into the bin 1. The bottom plates arranged on the longitudinal movement feeding conveyor belt 3 can be smoothly connected and enter the bin 1, and the connection is more stable. The upper part of the left bin baffle 13 is located between the front guide material into the bin side plate 31 and the rear guide material into the bin side plate 32.

[0042] In addition, the front guide material inlet bin side plate 31 is relatively fixedly arranged, and the rear guide material inlet bin side plate 32 is relatively arranged with adjustable front and rear positions. It can not only be adjusted to adapt to the front and rear different size specifications requirements of the bottom plate; moreover, the front guide material inlet bin side plate 31 can keep the relative (front and rear) position consistent with the front side of the bin 1 unchanged, and only the rear guide material inlet bin side plate 32 needs to be adjusted, so the structure is more reasonable and the adjustment is more convenient.

[0043] Among them, the feeding signal sensor 4 can adopt an optoelectronic eye, and the technology is relatively mature, such as an infrared or laser optoelectronic eye, etc.; the optoelectronic eye is arranged with horizontal irradiation; the setting position is adjustable in height; the feeding signal sensor 4 can be installed on the front guide material inlet bin side plate 31 or the rear guide material inlet bin side plate 32 for height position adjustment setting.

Claims

1. A bottom plate feeding device of a paper box forming machine, comprising a material bin (1) for stacking bottom plates, a push plate output device (2) provided at the bottom of the material bin (1), the push plate output device (2) comprising a single plate transverse discharging push head (20), characterized in that: The top of the silo (1) is connected to a longitudinal feeding conveyor belt (3), and the longitudinal feeding conveyor belt (3) is connected to a feeding drive device (30). The silo (1) is also provided with a feeding signal sensor (4) for detecting when the stacking height of the bottom plate thereof drops to a set position, and the feeding drive device (30) is connected to the feeding signal sensor (4).

2. The bottom plate feeding device of the carton forming machine according to claim 1, characterized in that: The high and low position adjustment setting of the feed signal sensor (4).

3. The bottom plate feeding device of the carton forming machine according to claim 1, characterized in that: The set position is located at the top of the silo (1), and the set position is flush with the conveying surface of the longitudinal feeding conveyor belt (3) or the set position is slightly lower than the conveying surface of the longitudinal feeding conveyor belt.

4. The bottom plate feeding device of the carton forming machine according to claim 1, characterized in that: The setting position is not higher than the conveying surface of the longitudinal feeding conveyor belt (3).

5. The bottom plate feeding device of the carton forming machine according to claim 1, characterized in that: The material bin (1) comprises a left support rail (11) and a right support rail (12), the left support rail (11) and the right support rail (12) are arranged horizontally, a single board transverse discharging pusher (20) is arranged between the left support rail (11) and the right support rail (12), the single board transverse discharging pusher (20) is installed on a transverse displacement seat (21), and the transverse displacement seat (21) is arranged on a transverse track (22). The silo (1) further comprises a silo left stopper (13) and a silo right stopper (14), wherein the silo left stopper (13) is arranged above the left support rail (11), and the silo right stopper (14) is arranged above the right support rail (12). The silo (1) further comprises a silo front stopper (15) and a silo rear stopper (16). The warehouse front stopper (15) is arranged at the front of the warehouse left stopper (13) and the warehouse right stopper (14), and a single board discharge gap is left between the warehouse front stopper (15) and the left support rail (11) and the right support rail (12) below; the warehouse rear stopper (16) is arranged at the rear of the warehouse left stopper (13) and the warehouse right stopper (14). The left bin block (13), the right bin block (14), the front bin block (15) and the rear bin block (16) cooperate to enclose the top of the left support rail (11) and the right support rail (12) to form a stacking and accommodating space.

6. The bottom plate feeding device of the carton forming machine according to claim 5, characterized in that: The warehouse front block (15) includes a warehouse front left block (151) and a warehouse front right block. The warehouse rear block (16) includes a warehouse rear left block (161) and a warehouse rear right block (162). The warehouse front left block (151) and the warehouse rear left block (161) are respectively arranged on the front and rear sides of the warehouse left block (13). The warehouse front right block and the warehouse rear right block (162) are respectively arranged on the front and rear sides of the warehouse right block (14). The left bin block (13), the right bin block (14), the front left bin block (151), the front right bin block, the rear left bin block (161) and the rear right bin block (162) cooperate to enclose the top of the left support rail (11) and the right support rail (12) to form a stacking accommodation space.

7. The bottom plate feeding device of the carton forming machine according to claim 6, characterized in that: The left support rail (11) is arranged on the longitudinal track (17). The left stopper (151) in front of the bin is adjusted in height on the left stopper (13). The right stopper in front of the bin can be adjusted in height on the right stopper (14). The left stopper (161) at the rear of the bin is adjusted in the forward and backward position on the left support rail (11). The right stopper (162) at the rear of the bin is arranged on the right support rail (12) to adjust the front and rear positions.

8. The bottom plate feeding device of the carton forming machine according to claim 6, characterized in that: The left bin stopper (13) is installed on the left support rail (11). The bin right stopper (14) is mounted on the right support rail (12), and the bin right stopper (14) is arranged below the input end of the longitudinal feeding conveyor belt (3); the right support rail (12) is relatively fixedly arranged; The upper portion of the left bin stopper (13) also has a longitudinally movable material feeding stopper (131).

9. The bottom plate feeding device of the carton forming machine according to claim 8, characterized in that: The front and rear sides of the top of the silo (1) are also provided with a front material introduction side plate (31) and a rear material introduction side plate (32) respectively. The front material guide into the warehouse side plate (31) and the rear material guide into the warehouse side plate (32) are respectively arranged on both sides of the conveying direction of the longitudinal feeding conveyor belt (3); The upper portion of the left bin stop (13) is located between the front material introduction bin side plate (31) and the rear material introduction bin side plate (32).

10. The bottom plate feeding device of the paper box forming machine according to claim 9, characterized in that: The front guide material entry bin side plate (31) is relatively fixedly arranged. The rear material guide into the bin side plate (32) is adjusted relative to the front and rear positions. The feed signal sensor (4) adopts a photoelectric eye; the photoelectric eye is set to illuminate horizontally; the setting position is set to adjust the height; The feeding signal sensor (4) is arranged at a height-adjustable position on the front material-introducing bin side plate (31) or the rear material-introducing bin side plate (32).

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