Automatic plate feeding device for packaging box production

Abstract

The invention discloses an automatic plate feeding device for packaging box production, and relates to the technical field of packaging box production, the automatic plate feeding device comprises a conveying belt and a base, the base is located at one end of the conveying belt, a displaceable supporting plate is arranged at the top end of the base, plates are stacked at the top end of the supporting plate, and the automatic plate feeding device further comprises a moving mechanism and a positioning mechanism. By arranging the moving mechanism and the positioning mechanism, a motor runs to drive a threaded rod to rotate, and the threaded rod rotates to drive a push plate to slide in a transverse groove; when the push plate moves towards the conveying belt, the push plate pushes the plate at the top end to move, part of the plate is pushed to the top end of the conveying belt, and the conveying belt runs to convey the plate; and when the pushing plate moves away from the conveying belt, the supporting plate is driven to automatically move upwards, so that the plates are pushed upwards, the plates are conveniently pushed to the top end of the conveying belt next time, and the stacked plates are conveniently placed on the conveying belt in sequence.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging box production, and specifically to an automatic feeding device for plates used in packaging box production. Background Art

[0002] A packaging box, as the name implies, is a box used to package products, which is prepared by cutting, folding and bonding various types of plates. When producing a packaging box, it is necessary for workers to sequentially place the plates stacked together onto a conveyor belt, and the conveyor belt transports the plates to a cutting device for cutting operations. However, manually placing the plates has low efficiency and a large workload. In order to automatically place the plates onto the conveyor belt, an automatic feeding device for plates used in packaging box production is provided. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic feeding device for plates used in packaging box production in order to automatically place the plates onto the conveyor belt.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An automatic feeding device for plates used in packaging box production, including a conveyor belt and a base. The base is located at one end of the conveyor belt. A displaceable support plate is provided at the top end of the base. The plates are stacked on the top end of the support plate. The plates are moved onto the conveyor belt through a moving mechanism. The moving mechanism includes a mounting frame and a baffle. The mounting frame is fixedly connected to one end of the base, and the baffle is fixedly connected to the other end of the base. A horizontal groove is opened at the bottom end of the top of the mounting frame. A push plate is slidably connected to the inner wall of the horizontal groove. A motor is installed on the outer wall of the mounting frame. The output end of the motor is connected to a threaded rod, and the threaded rod penetrates through the push plate. An activity groove is opened at the top end of the base. A movable block is fixedly connected to the bottom end of the support plate, and the movable block is slidably connected to the inner wall of the activity groove. The movable block is positioned on the inner wall of the activity groove through a positioning mechanism.

[0005] As a further solution of the present invention: The moving mechanism further includes a first spur gear, which is rotatably connected to the inside of the base and located on the outer wall of the movable block. One end of the first spur gear is fixedly connected to a connecting shaft, and one end of the connecting shaft is fixedly connected to a ratchet wheel. An extrusion rod is slidably connected to the outer wall of the ratchet wheel inside the base. The extrusion rod extends above the base. A first spring is connected between the bottom end of the extrusion rod and the base. A toothed plate extending out of the extrusion rod is slidably connected to the inside of the extrusion rod. A second spring is connected between the toothed plate and the extrusion rod. The toothed plate is in contact with the ratchet wheel.

[0006] As a further solution of the present invention: The positioning mechanism includes a clamping block, the clamping block is slidably connected inside the movable block and extends out of the movable block, a third spring is connected between the clamping block and the movable block, a sliding groove is opened on the outer wall of the baffle, one end of the support plate is fixedly connected with a slider, the slider is slidably connected to the inner wall of the sliding groove, an activity frame is slidably connected inside the slider and the support plate, the top end of the activity frame extends out of the slider, a fourth spring is connected between the activity frame and the support plate, a second straight gear is rotatably connected to the outer wall of the activity frame inside the support plate, a displacement seat is slidably connected to the outer wall of the second straight gear inside the support plate, a displacement groove is opened on the outer wall of the displacement seat, a displacement rod is slidably connected to the inner wall of the displacement groove, a fifth spring is connected between the displacement rod and the displacement groove, a vertical rod passing through the clamping block is slidably connected inside the movable block, the vertical rod extends to the bottom end of the movable block, an insertion block is fixedly connected to the outer wall of the vertical rod, and a slot is opened at the top end of the clamping block.

[0007] As a further solution of the present invention: The inner wall of the horizontal groove is in contact with the top outer wall of the push plate, a threaded hole is opened on the outer wall of the push plate, and the threaded hole matches the threaded rod.

[0008] As a further solution of the present invention: The top end of the extrusion rod is provided with a first inclined surface, a first ratchet tooth is opened on the outer wall of the toothed plate, and the first ratchet tooth is engaged with the toothed plate.

[0009] As a further solution of the present invention: A first tooth groove is opened on the outer wall of the movable block, the first tooth groove is engaged with the first straight gear, and the outer wall of the movable block is in contact with the inner wall of the activity groove.

[0010] As a further solution of the present invention: A second ratchet tooth is provided on one side of the inner wall of the activity groove, and the second ratchet tooth is engaged with one end of the clamping block.

[0011] As a further solution of the present invention: The inner wall of the sliding groove is in contact with the outer wall of the slider, second tooth grooves are opened on the outer walls of the activity frame and the displacement seat, and the second tooth grooves are engaged with the second straight gear.

[0012] As a further solution of the present invention: The inner wall of the displacement groove is in contact with the outer wall of the displacement rod, and a limiting rod passing through the displacement rod is fixedly connected to the inner wall of the displacement groove.

[0013] As a further solution of the present invention: The top end of the vertical rod is provided with a second inclined surface, the top end of the slot is provided with a third inclined surface, the bottom end of the insertion block is in contact with the third inclined surface, and the outer wall of the insertion block is in contact with the inner wall of the slot.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a moving mechanism and a positioning mechanism, when the motor operates, the threaded rod rotates, and the rotation of the threaded rod drives the push plate to slide in the transverse groove; when the push plate moves towards the conveyor belt, the push plate pushes the plate at the top, and part of the plate is pushed to the top of the conveyor belt, and the conveyor belt operates to convey the plate; when the push plate moves away from the conveyor belt, it drives the support plate to move upward automatically, thereby pushing the plate upward, facilitating the next pushing of the plate to the top of the conveyor belt and facilitating the sequential placement of the stacked plates onto the conveyor belt; By providing a positioning mechanism, when the movable block slides upward in the movable groove, the clamping block engages with the second ratchet tooth to prevent the movable block from moving downward; when only the last plate remains at the top of the support plate, the slider slides to the top inner wall of the chute, and the top of the displacement rod extends out of the support plate; when the push plate pushes the plate, during the process of the push plate pushing the plate, the push plate contacts the displacement rod and pushes the displacement rod to move, and the clamping block moves away from the movable groove, canceling the positioning of the movable block, and the support plate moves to the top of the base, facilitating the automatic reset of the position of the support plate after the plate is conveyed to the top of the conveyor belt and facilitating the next supply operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a partial cross-sectional view of the mounting bracket of the present invention; Figure 3 is an installation schematic diagram of the first spur gear of the present invention; Figure 4 is an installation schematic diagram of the extrusion rod of the present invention; Figure 5 is a cross-sectional view of the extrusion rod of the present invention; Figure 6 is a cross-sectional view of the base and the baffle of the present invention; Figure 7 is an installation schematic diagram of the displacement seat of the present invention; Figure 8 is a cross-sectional view of the displacement seat of the present invention.

[0016] In the figure: 1, conveyor belt; 2, base; 3, pallet; 4, moving mechanism; 401, mounting frame; 402, horizontal groove; 403, push plate; 404, threaded rod; 405, motor; 406, baffle; 407, movable groove; 408, movable block; 409, first spur gear; 410, connecting shaft; 411, ratchet; 412, extrusion rod; 413, first spring; 414, toothed plate; 415, second spring; 5, positioning mechanism; 501, latch; 502, third spring; 503, chute; 504, slider; 505, movable frame; 506, fourth spring; 507, second spur gear; 508, displacement seat; 509, displacement groove; 510, displacement rod; 511, fifth spring; 512, vertical rod; 513, insertion block; 514, insertion slot; 6, limiting rod. Detailed implementation manners

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The following will describe the embodiments according to the overall structure of the present invention.

[0019] Please refer to Figures 1 to 8, in the embodiment of the present invention, an automatic feeding device for the board used in the production of the packaging box includes a conveyor belt 1 and a base 2. The base 2 is located at one end of the conveyor belt 1. A displaceable pallet 3 is provided at the top of the base 2. The boards are stacked on the top of the pallet 3. The boards are moved onto the conveyor belt 1 through a moving mechanism 4. The moving mechanism 4 includes a mounting frame 401 and a baffle 406. The mounting frame 401 is fixedly connected to one end of the base 2, and the baffle 406 is fixedly connected to the other end of the base 2. A transverse groove 402 is opened at the bottom end of the top of the mounting frame 401. A push plate 403 is slidably connected to the inner wall of the transverse groove 402. A motor 405 is installed on the outer wall of the mounting frame 401. The output end of the motor 405 is connected to a threaded rod 404. The threaded rod 404 penetrates through the push plate 403. An activity groove 407 is opened at the top of the base 2. An activity block 408 is fixedly connected to the bottom end of the pallet 3. The activity block 408 is slidably connected to the inner wall of the activity groove 407. The activity block 408 is positioned on the inner wall of the activity groove 407 through a positioning mechanism 5. The moving mechanism 4 further includes a first spur gear 409. The first spur gear 409 is rotatably connected to the inside of the base 2 and is located on the outer wall of the activity block 408. One end of the first spur gear 409 is fixedly connected to a connecting shaft 410. One end of the connecting shaft 410 is fixedly connected to a ratchet 411. An extrusion rod 412 is slidably connected to the outer wall of the ratchet 411 inside the base 2. The extrusion rod 412 extends above the base 2. A first spring 413 is connected between the bottom end of the extrusion rod 412 and the base 2. A toothed plate 414 extending out of the extrusion rod 412 is slidably connected to the inside of the extrusion rod 412. A second spring 415 is connected between the toothed plate 414 and the extrusion rod 412. The toothed plate 414 is in contact with the ratchet 411.

[0020] In this embodiment: When feeding the boards, the stacked boards are moved to the top of the pallet 3 through equipment such as a forklift, so that the boards are in contact with the baffle 406 (as Figure 1 shown). At this time, the motor 405 can be started. The operation of the motor 405 drives the threaded rod 404 to rotate. The rotation of the threaded rod 404 drives the push plate 403 to slide in the transverse groove 402. The reciprocating displacement of the push plate 403 can be controlled through the motor 405; When the push plate 403 moves towards the conveyor belt 1, the push plate 403 pushes the plate at the top to move, and part of the plate is pushed to the top of the conveyor belt 1. The conveyor belt 1 operates to convey the plate; when the push plate 403 moves away from the conveyor belt 1, the push plate 403 contacts the extrusion rod 412 during displacement, and pushes the extrusion rod 412 to move, squeezing the first spring 413. The displacement of the extrusion rod 412 drives the toothed plate 414 to move. When the first ratchet tooth on the toothed plate 414 contacts the ratchet wheel 411, it drives the ratchet wheel 411 to rotate. The rotation of the ratchet wheel 411 drives the connecting shaft 410 to rotate. The rotation of the connecting shaft 410 drives the first spur gear 409 to rotate. The rotation of the first spur gear 409 drives the movable block 408 to move upward in the movable groove 407. After the position of the movable block 408 is completed, the position of the movable block 408 is positioned through the cooperation of the parts in the positioning mechanism 5. The displacement of the movable block 408 drives the supporting plate 3 to move upward, thereby pushing the plate upward, which facilitates pushing the plate to the top of the conveyor belt 1 next time; when the push plate 403 separates from the extrusion rod 412, the extrusion rod 412 is displaced and reset under the elastic force of the first spring 413. At this time, the movable block 408 cannot move downward due to the action of the parts in the positioning mechanism 5, so that the ratchet wheel 411 cannot rotate in the reverse direction. At this time, the toothed plate 414 slides inside the inner wall of the extrusion rod 412 until the first ratchet tooth on the toothed plate 414 separates from the ratchet wheel 411, which is convenient for placing the plates stacked together on the conveyor belt 1 in sequence.

[0021] Please refer specifically to Figures 6 to 8 , the positioning mechanism 5 includes a clamping block 501. The clamping block 501 is slidably connected to the inside of the movable block 408 and extends out of the movable block 408. A third spring 502 is connected between the clamping block 501 and the movable block 408. A sliding groove 503 is opened on the outer wall of the baffle 406. One end of the supporting plate 3 is fixedly connected with a sliding block 504. The sliding block 504 is slidably connected to the inner wall of the sliding groove 503. An activity frame 505 is slidably connected inside the sliding block 504 and the supporting plate 3. The top end of the activity frame 505 extends out of the sliding block 504. A fourth spring 506 is connected between the activity frame 505 and the supporting plate 3. A second spur gear 507 is rotatably connected to the outer wall of the activity frame 505 inside the supporting plate 3. A displacement seat 508 is slidably connected to the outer wall of the second spur gear 507 inside the supporting plate 3. A displacement groove 509 is opened on the outer wall of the displacement seat 508. A displacement rod 510 is slidably connected to the inner wall of the displacement groove 509. A fifth spring 511 is connected between the displacement rod 510 and the displacement groove 509. A vertical rod 512 penetrating through the clamping block 501 is slidably connected inside the movable block 408. The vertical rod 512 extends to the bottom end of the movable block 408. An insertion block 513 is fixedly connected to the outer wall of the vertical rod 512. A slot 514 is opened at the top end of the clamping block 501.

[0022] In this embodiment: When the movable block 408 slides upward in the movable slot 407, the locking block 501 is engaged with the second ratchet in the movable slot 407 under the elastic force of the third spring 502, thereby positioning the position of the movable block 408 to prevent the movable block 408 from moving downward; When only the last piece of board remains at the top of the support plate 3, at this time, the top of the support plate 3 is flush with the top of the baffle 406. The slider 504 slides to the top end of the inner wall of the chute 503, and the movable frame 505 contacts the top end of the inner wall of the chute 503. The movable frame 505 is displaced under force, squeezing the fourth spring 506. The displacement of the movable frame 505 drives the second spur gear 507 to rotate. The rotation of the second spur gear 507 drives the displacement seat 508 to displace upward. The displacement of the displacement seat 508 drives the top end of the displacement rod 510 to extend out of the support plate 3, and the displacement rod 510 lifts the board a small distance; When the push plate 403 pushes the board, during the process of the push plate 403 pushing the board, a part of the board first moves to the top of the conveyor belt 1. At the same time, the push plate 403 contacts the displacement rod 510, pushing the displacement rod 510 to displace. The displacement rod 510 slides in the displacement slot 509. The displacement rod 510 contacts the vertical rod 512, pushing the vertical rod 512 to displace. The bottom end of the vertical rod 512 displaces out of the movable block 408. At the same time, the displacement of the vertical rod 512 drives the insertion block 513 to displace. The displacement of the insertion block 513 pushes the locking block 501 to displace and separate from the movable slot 407, squeezing the third spring 502, canceling the positioning of the movable block 408. At the same time, the insertion block 513 displaces into the insertion slot 514 to perform a positioning operation on the locking block 501. At this time, the movable block 408 displaces downward along the movable slot 407, thereby driving the support plate 3 to move to the top of the base 2. At this time, the bottom end of the vertical rod 512 contacts the bottom end of the movable slot 407, pushing the vertical rod 512 to displace and reset, thereby driving the insertion block 513 to displace out of the insertion slot 514. The locking block 501 is engaged with the second ratchet of the movable slot 407 under the elastic force of the third spring 502, facilitating the automatic reset of the position of the support plate 3 after the board is conveyed to the top of the conveyor belt 1, and facilitating the next supply operation.

[0023] Please refer specifically to Figures 1 to 2 , the inner wall of the horizontal groove 402 fits with the top outer wall of the push plate 403. A threaded hole is provided on the outer wall of the push plate 403, and the threaded hole matches the threaded rod 404.

[0024] In this embodiment: Start the motor 405. The operation of the motor 405 drives the threaded rod 404 to rotate. The rotation of the threaded rod 404 drives the push plate 403 to slide in the horizontal groove 402.

[0025] Please refer specifically to Figures 1 to 5, the top end of the extrusion rod 412 is provided with a first inclined surface, and the outer wall of the toothed plate 414 is provided with first ratchet teeth, and the first ratchet teeth are engaged with the toothed plate 414.

[0026] In this embodiment: when the push plate 403 moves away from the conveyor belt 1, the push plate 403 contacts the extrusion rod 412 during displacement, pushes the extrusion rod 412 to displace, squeezes the first spring 413, and the displacement of the extrusion rod 412 drives the toothed plate 414 to displace. When the first ratchet teeth on the toothed plate 414 contact the ratchet wheel 411, it drives the ratchet wheel 411 to rotate, and the rotation of the ratchet wheel 411 drives the connecting shaft 410 to rotate.

[0027] Please refer specifically to Figures 1 to 5 , the outer wall of the movable block 408 is provided with a first tooth groove, the first tooth groove is engaged with the first spur gear 409, and the outer wall of the movable block 408 is attached to the inner wall of the movable groove 407.

[0028] In this embodiment: the rotation of the connecting shaft 410 drives the first spur gear 409 to rotate, and the rotation of the first spur gear 409 drives the movable block 408 to move upward in the movable groove 407.

[0029] Please refer specifically to Figures 6 to 8 , one side of the inner wall of the movable groove 407 is provided with second ratchet teeth, and the second ratchet teeth are engaged with one end of the latch 501.

[0030] In this embodiment: when the movable block 408 slides upward in the movable groove 407, the latch 501 is engaged with the second ratchet teeth in the movable groove 407 under the elastic force of the third spring 502, so as to position the position of the movable block 408 and prevent the movable block 408 from moving downward.

[0031] Please refer specifically to Figures 6 to 8 , the inner wall of the sliding groove 503 is attached to the outer wall of the sliding block 504, and the outer walls of the movable frame 505 and the displacement seat 508 are provided with second tooth grooves, and the second tooth grooves are engaged with the second spur gear 507.

[0032] In this embodiment: when the sliding block 504 slides to the top end of the inner wall of the sliding groove 503, the movable frame 505 contacts the top end of the inner wall of the sliding groove 503, the movable frame 505 is forced to displace, squeezes the fourth spring 506, and the displacement of the movable frame 505 drives the second spur gear 507 to rotate, and the rotation of the second spur gear 507 drives the displacement seat 508 to move upward.

[0033] Please refer specifically to Figures 6 to 8 , the inner wall of the displacement groove 509 is attached to the outer wall of the displacement rod 510, and the inner wall of the displacement groove 509 is fixedly connected with a limiting rod 6 penetrating through the displacement rod 510.

[0034] In this embodiment: The displacement rod 510 slides within the displacement slot 509. The displacement rod 510 slides along the limiting rod 6, and the limiting rod 6 limits the movement of the displacement rod 510.

[0035] Please refer specifically to Figures 6 to 8 , a second inclined surface is provided at the top of the vertical rod 512, a third inclined surface is provided at the top of the slot 514, the bottom end of the insertion block 513 is in contact with the third inclined surface, and the outer wall of the insertion block 513 fits with the inner wall of the slot 514.

[0036] In this embodiment: The push plate 403 contacts the displacement rod 510 to push the displacement rod 510 to displace. The displacement rod 510 slides within the displacement slot 509. The displacement rod 510 contacts the vertical rod 512 to push the vertical rod 512 to displace. The bottom end of the vertical rod 512 displaces out of the movable block 408. At the same time, the displacement of the vertical rod 512 drives the insertion block 513 to displace. The displacement of the insertion block 513 pushes the locking block 501 to displace and separate from the movable slot 407, squeezing the third spring 502 and canceling the positioning of the movable block 408. At the same time, the insertion block 513 displaces into the slot 514 to perform a positioning operation on the locking block 501.

[0037] The above-mentioned are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An automatic feeding device for the board used in the production of packaging boxes, comprising a conveyor belt (1) and a base (2), the base (2) being located at one end of the conveyor belt (1), characterized in that, A displaceable support plate (3) is provided at the top end of the base (2), and the plates are stacked on the top end of the support plate (3). The plates are moved onto the conveyor belt (1) by a moving mechanism (4). The moving mechanism (4) includes a mounting frame (401) and a baffle (406). The mounting frame (401) is fixedly connected to one end of the base (2), and the baffle (406) is fixedly connected to the other end of the base (2). A horizontal groove (402) is formed at the bottom end of the top of the mounting frame (401), and a push plate (403) is slidably connected to the inner wall of the horizontal groove (402). A motor (405) is mounted on the outer wall of the mounting frame (401), and the output end of the motor (405) is connected to a threaded rod (404). The threaded rod (404) passes through the push plate (403). An activity groove (407) is formed at the top end of the base (2), and an activity block (408) is fixedly connected to the bottom end of the support plate (3). The activity block (408) is slidably connected to the inner wall of the activity groove (407). The activity block (408) is positioned on the inner wall of the activity groove (407) by a positioning mechanism (5).

2. The automatic sheet supply device for producing packaging boxes according to claim 1, characterized in that, The moving mechanism (4) further includes a first spur gear (409). The first spur gear (409) is rotatably connected to the inside of the base (2) and is located on the outer wall of the activity block (408). One end of the first spur gear (409) is fixedly connected to a connecting shaft (410). One end of the connecting shaft (410) is fixedly connected to a ratchet wheel (411). An extrusion rod (412) is slidably connected to the outer wall of the ratchet wheel (411) inside the base (2). The extrusion rod (412) extends above the base (2). A first spring (413) is connected between the bottom end of the extrusion rod (412) and the base (2). A toothed plate (414) extending out of the extrusion rod (412) is slidably connected to the inside of the extrusion rod (412). A second spring (415) is connected between the toothed plate (414) and the extrusion rod (412). The toothed plate (414) is in contact with the ratchet wheel (411).

3. The automatic sheet supply device for packaging box production according to claim 2, wherein The positioning mechanism (5) includes a clamping block (501). The clamping block (501) is slidably connected to the inside of the movable block (408) and extends out of the movable block (408). A third spring (502) is connected between the clamping block (501) and the movable block (408). A chute (503) is formed on the outer wall of the baffle (406). One end of the support plate (3) is fixedly connected with a slider (504). The slider (504) is slidably connected to the inner wall of the chute (503). An activity frame (505) is slidably connected to the inside of the slider (504) and the support plate (3). The top end of the activity frame (505) extends out of the slider (504). A fourth spring (506) is connected between the activity frame (505) and the support plate (3). A second spur gear (507) is rotatably connected to the inside of the support plate (3) on the outer wall of the activity frame (505). A displacement seat (508) is slidably connected to the inside of the support plate (3) on the outer wall of the second spur gear (507). A displacement groove (509) is formed on the outer wall of the displacement seat (508). A displacement rod (510) is slidably connected to the inner wall of the displacement groove (509). A fifth spring (511) is connected between the displacement rod (510) and the displacement groove (509). A vertical rod (512) passing through the clamping block (501) is slidably connected to the inside of the movable block (408). The vertical rod (512) extends to the bottom end of the movable block (408). An insertion block (513) is fixedly connected to the outer wall of the vertical rod (512). A slot (514) is formed at the top end of the clamping block (501).

4. The automatic sheet feeding device for packaging box production according to claim 2, characterized in that, The inner wall of the transverse groove (402) is in fit with the top outer wall of the push plate (403). Threaded holes are formed in the outer wall of the push plate (403), and the threaded holes are matched with the threaded rods (404).

5. The automatic sheet supply device for packaging box production according to claim 2, characterized in that, The top end of the extrusion rod (412) is provided with a first inclined surface. First ratchet teeth are formed on the outer wall of the toothed plate (414), and the first ratchet teeth are engaged with the toothed plate (414).

6. The automatic sheet feeding device for packaging box production according to claim 2, characterized in that A first tooth groove is formed on the outer wall of the movable block (408), and the first tooth groove is engaged with the first spur gear (409). The outer wall of the movable block (408) is in fit with the inner wall of the activity groove (407).

7. The automatic sheet supply device for packaging box production according to claim 3, wherein Second ratchet teeth are arranged on one side of the inner wall of the activity groove (407), and the second ratchet teeth are engaged with one end of the clamping block (501).

8. The automatic sheet feeding device for packaging box production according to claim 3, characterized in that, The inner wall of the chute (503) is in fit with the outer wall of the slider (504). Second tooth grooves are formed on the outer walls of the activity frame (505) and the displacement seat (508), and the second tooth grooves are engaged with the second spur gear (507).

9. The automatic sheet feeding device for packaging box production according to claim 3, characterized in that, The inner wall of the displacement groove (509) is in fit with the outer wall of the displacement rod (510). A limiting rod (6) passing through the displacement rod (510) is fixedly connected to the inner wall of the displacement groove (509).

10. The automatic sheet supply device for packaging box production according to claim 3, wherein The top end of the vertical rod (512) is provided with a second inclined surface, the top end of the slot (514) is provided with a third inclined surface, the bottom end of the insertion block (513) is in contact with the third inclined surface, and the outer wall of the insertion block (513) is fitted with the inner wall of the slot (514).

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