Paper folding device capable of being automatically adjusted

Abstract

The utility model discloses an automatically adjustable paper folding device which comprises a conveying device and a support arranged at one end of the head of the conveying device, two pressing pieces located above the conveying device are arranged on the support in a spaced mode, and a conveying gap for a carton to pass through is formed between the pressing pieces and the conveying device. Two baffles located on the outer sides of the two pressing pieces correspondingly are further arranged on the support in a sliding mode, paper folding transverse rods extending in the conveying direction of the conveying device are arranged on the two sides of the conveying device correspondingly, and the head ends of the paper folding transverse rods on the two sides are rotationally connected with the bottoms of the inner sides of the two baffles correspondingly. The joint of the paper folding cross rod and the baffle is flush with or lower than the table top of the conveying device, the tail end of the paper folding cross rod is rotationally connected with the conveying device, and the height of the tail end of the paper folding cross rod is larger than that of the conveying gap. The carton folding device can adapt to folding of cartons of different sizes, and the applicability of the carton folding device is improved.

Description

Technical Field

[0001] The utility model belongs to the field of carton processing equipment, and particularly relates to an automatically adjustable paper folding device. Background Art

[0002] Cartons are the most widely used packaging products. According to different materials, there are corrugated cartons, single-layer cardboard boxes, etc., with various specifications and models. Corrugated cartons are formed by bonding face paper, inner paper, core paper, and corrugated paper processed into corrugated shapes. According to the requirements of commodity packaging, corrugated cardboard can be processed into single-sided corrugated cardboard, three-layer corrugated cardboard, five-layer, seven-layer, eleven-layer corrugated cardboard, etc. According to the corrugated shape, it can be divided into V-shaped, U-shaped, and UV-shaped. Commonly used cartons are three-layer and five-layer, and seven-layer is less used. Each layer is divided into inner paper, corrugated paper, core paper, and face paper. The inner and face papers are made of tea board paper and kraft paper, and the core paper is made of corrugated paper. The colors and feels of various papers are different, and the papers produced by different manufacturers are also different.

[0003] In the production process of corrugated cartons, corrugated paper needs to be processed through processes such as die cutting, indentation, and folding to obtain a formed corrugated carton, that is, through indentation and folding, it has the preliminary shape of a carton. The application number CN202220578482.9, a folding device for carton production, disclosed in the prior art, after the cardboard drops onto the conveying platform through the feeding component, it is squeezed and fixed by the squeezing component on the folding component, then squeezed and folded by the descending folding plate, and finally conveyed out of the guiding plate by the driving component, so as to improve the automation degree of cardboard folding processing and achieve the effect of improving production efficiency. However, the operation of this device is not only cumbersome and complex, but also cannot fold cartons of different sizes, which is not conducive to use and has low applicability. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the existing technical defects and provide an automatically adjustable paper folding device. The folding of the carton moving forward is realized through the cooperation of the pressing piece above the conveying device and the paper folding cross bars on both sides, and the paper folding cross bars are linked with the baffle, so that the distance between the first ends of the two paper folding cross bars is always less than the length of the carton, thereby adapting to the folding of cartons of different sizes and improving its applicability.

[0005] To solve the above technical problems, the utility model provides an automatically adjustable paper folding device, which includes a conveying device and a bracket arranged at one end of the head of the transmission device. Two pressing plates are spaced on the bracket and located above the conveying device. A conveying gap for the cardboard box to pass through is formed between the pressing plate and the conveying device. Two baffles are also slidably arranged on the bracket and located outside the two pressing plates respectively. The two sides of the conveying device are both provided with paper folding cross bars extending along the conveying direction. The first ends of the paper folding cross bars on both sides are respectively rotatably connected to the inner bottom of the two baffles, and the connection part of the paper folding cross bar and the baffle is flush with the table top of the conveying device or lower than the table top of the conveying device. The end of the paper folding cross bar is rotatably connected to the conveying device and the height is higher than the conveying gap.

[0006] Further, the paper folding cross bar includes a first telescopic rod. The first end of the first telescopic rod is rotatably connected to the inner bottom of the baffle, and the end is rotatably connected to the conveying device. The first telescopic rod gradually rises along the conveying direction of the conveying device, and the distance between the two first telescopic rods on both sides gradually decreases along the conveying direction of the conveying device, and the distance between the ends of the two first telescopic rods ≤ the distance between the two pressing plates.

[0007] Further, lifting platforms that can be lifted up and down are symmetrically arranged on both sides of the conveying device. The end of the first telescopic rod is rotatably connected to one end of the lifting platform.

[0008] Further, the lifting platform includes a fixing plate with a height higher than the conveying gap and a first driving device for driving the fixing plate to move up and down. The end of the first telescopic rod is rotatably connected to the first end of the fixing plate. The first driving device includes a first rotating seat arranged outside the conveying device, a first lead screw that is vertically arranged and threadedly connected to the first rotating seat, and a first motor for driving the first lead screw to rotate and move up and down.

[0009] Further, the paper folding cross bar also includes a second telescopic rod. The first end of the second telescopic rod is rotatably connected to the end of the fixing plate, and the end is rotatably connected to the conveying device. The second telescopic rod gradually decreases along the conveying direction of the conveying device, and the distance between the two second telescopic rods on both sides gradually decreases along the conveying direction of the conveying device.

[0010] Further, second driving devices are arranged on both sides of the end of the conveying device. The second driving device includes a second rotating seat fixed on the conveying device, a second lead screw that is horizontally arranged and threadedly connected to the second rotating seat, and a second motor for driving the second lead screw to rotate and move in the width direction of the conveying device. The inner end of the second lead screw extends inwards above the conveying device. The end of the second telescopic rod is rotatably connected to the inner end of the second lead screw.

[0011] Further, third driving devices for driving the two baffles to approach or separate from each other are symmetrically arranged on both sides of the bracket. The third driving device includes a third lead screw rotatably arranged on the bracket and horizontally disposed, and a third motor for driving the rotation of the third lead screw. The inner end of the third lead screw extends inward above the transmission device and is perpendicular to the transmission device. A lead screw nut is threadedly connected to the third lead screw, and the baffle is fixedly connected to the lead screw nut.

[0012] Further, two first guiding and limiting rods and a second guiding and limiting rod are arranged at intervals in the front and rear at the upper end of the bracket and are located above the conveying device. The upper end of the baffle is slidably arranged on the first guiding and limiting rod, the upper end of the pressing piece is slidably arranged on the second guiding and limiting rod, and fourth driving devices for driving the two pressing pieces to approach or separate from each other are symmetrically arranged on both sides of the bracket.

[0013] Further, the conveying device includes a base, two conveying belts slidably arranged on the base and symmetrically disposed, and a fifth driving device symmetrically arranged on the base for driving the two conveying belts to approach or separate from each other. The two conveying belts are respectively slidably arranged on the base and the bracket through supporting seats. The surface of the conveying belt is flush with the surface of the supporting seat. The two pressing pieces are respectively located above the two supporting seats. At least one guiding shaft penetrating through the two supporting seats is arranged on the base.

[0014] Further, the fifth driving device includes a fifth lead screw rotatably arranged on the base and horizontally passing through the supporting seat, and a fifth motor for driving the rotation of the fifth lead screw. A lead screw nut is threadedly connected to the fifth lead screw, and the supporting seat is fixedly connected to the lead screw nut.

[0015] The utility model has the following beneficial effects:

[0016] In the present utility model, when in use, the carton is placed at the head of the conveying device. At this time, the positions of the two baffles are adjusted according to the size of the carton so that the two baffles clamp the carton. Since the head end of the folding paper cross bar is connected to the baffle, during the adjustment of the baffle, the head end of the folding paper cross bar is synchronously driven to move, and the connection part between the two is flush with or lower than the tabletop of the conveying device. Thus, both ends of the carton are placed above the folding paper cross bar. Then, the conveying device operates to drive the carton to be conveyed forward into the conveying gap between the pressing piece and the conveying device. By virtue of the downward pressing relationship of the pressing piece, a folding position is formed at the pressing piece. In combination with the characteristic that the head end of the folding paper cross bar is lower and the tail end is higher, both ends of the carton are folded upward around the folding position during the forward conveying process. In this structure, through the linkage relationship between the folding paper cross bar and the baffle, it is not necessary to manually adjust the two folding paper cross bars, achieving the purpose of automatically adjusting the distance between the head ends of the two folding paper cross bars, so that the distance between the head ends of the two folding paper cross bars is always smaller than the length of the carton. Thus, both ends of cartons of different sizes are always located above the folding paper cross bar during folding, thereby enabling the folding of cartons of different sizes to be adapted, improving its applicability.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, which will become apparent from the following description or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 is a schematic diagram of the automatically adjustable paper folding device in the embodiment;

[0020] Figure 2 is a schematic diagram of another perspective of the automatically adjustable paper folding device in the embodiment;

[0021] Figure 3 is Figure 2 an enlarged schematic diagram of A in

[0022] Figure 4 is Figure 2 an enlarged schematic diagram of B in

[0023] Figure 5 is a top view of the automatically adjustable paper folding device in the embodiment;

[0024] Figure 6 is a side view of the automatically adjustable paper folding device in the embodiment;

[0025] Figure 7 is a front view of the automatically adjustable paper folding device in the embodiment;

[0026] Figure 8Schematic diagram of the unfolded cardboard box in the embodiment just placed at the head of the paper folding device;

[0027] Figure 9 Schematic diagram of the cardboard box sliding along the first telescopic rod and folding in the embodiment;

[0028] Figure 10 Schematic diagram of the cardboard box sliding to the lifting platform in the embodiment;

[0029] Figure 11 Schematic diagram of the cardboard box sliding along the second telescopic rod and folding in the embodiment. Specific embodiments

[0030] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and described below in conjunction with the drawings and specific embodiments; it should be noted that in the text, descriptions such as "first" and "second" are used to distinguish different components, etc., and do not represent a sequence, nor do they limit that "first" and "second" are different types.

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0032] Embodiment 1

[0033] As Figures 1 to 7 shown, the automatically adjustable paper folding device shown in this embodiment includes a conveying device and a bracket 1 provided at one end (i.e., the input end) of the head of the transmission device. The conveying device is used to convey the cardboard box from front to back. Two pressing pieces 10 are spaced on the bracket 1 above the conveying device. A conveying gap for the cardboard box to be conveyed forward is formed between the pressing pieces 10 and the conveying device. That is, during the initial forward conveyance of the cardboard box, two downward pressing positioning points are formed by the pressing pieces 10. Two baffles 11 are also slidably provided on the bracket 1 respectively outside the two pressing pieces 10, which are used to clamp both ends of the cardboard box when the cardboard box is initially placed on the conveying device. Folding paper crossbars extending along the conveying direction are provided on both sides of the conveying device. The first ends of the folding paper crossbars on both sides are respectively rotatably connected to the inner bottoms of the two baffles 11. That is, the folding paper crossbars are connected to the baffles one by one, and the connection part of the folding paper crossbar and the baffle 11 is flush with or lower than the tabletop of the conveying device. In this way, when the cardboard box is initially placed, its two ends are placed on the first ends of the folding paper crossbars. The end of the folding paper crossbar is rotatably connected to the conveying device and the height is higher than the conveying gap.

[0034] In the above, when in use, place the cardboard box at the head of the conveying device. At this time, adjust the positions of the two baffles according to the size of the cardboard box so that the two baffles clamp the cardboard box 100 (as Figure 8 shown). Since the head end of the folding paper cross bar is connected to the baffle, during the adjustment of the baffle, the head end of the folding paper cross bar is synchronously driven to move, and the connection between the two is flush with or lower than the tabletop of the conveying device, so that both ends of the cardboard box are placed above the folding paper cross bar. Then, the conveying device works to drive the cardboard box forward and convey it into the conveying gap between the pressing piece and the conveying device. Utilize the downward pressing relationship of the pressing piece to form a folding position at the pressing piece, and cooperate with the characteristic that the head end of the folding paper cross bar is lower and the tail end is higher, so that both ends of the cardboard box 100 are folded upward around the folding position during the forward conveying process (as Figure 9 shown); in this structure, through the linkage relationship between the folding paper cross bar and the baffle, there is no need to manually adjust the two folding paper cross bars, achieving the purpose of automatically adjusting the distance between the head ends of the two folding paper cross bars, so that the distance between the head ends of the two folding paper cross bars is always less than the length of the cardboard box. Furthermore, both ends of cardboard boxes of different sizes are always located above the folding paper cross bar during folding, thus enabling the folding of cardboard boxes of different sizes and improving its applicability.

[0035] In an embodiment, the folding paper cross bar includes a first telescopic rod 21. The head end of the first telescopic rod 21 is rotatably connected to the inner bottom of the baffle 11, and the tail end is rotatably connected to the conveying device. Utilize its telescopic and rotatable characteristics to enable the first telescopic rod to adaptively stretch or contract during the movement with the baffle, avoiding the problem of jamming of the first telescopic rod during the movement with the baffle; the height of the first telescopic rod 21 gradually increases along the conveying direction of the conveying device, and the distance between the two first telescopic rods 21 on both sides gradually decreases along the conveying direction of the conveying device, that is, the two first telescopic rods 21 on both sides gradually converge and gradually rise from front to back, so that both ends of the cardboard box are gradually folded upward in a sliding manner along the two first telescopic rods 21 on both sides (as Figure 9 shown); and the distance between the tail ends of the two first telescopic rods 21 on both sides ≤ the distance between the two pressing pieces 10, that is, the tail end position of the first telescopic rod 21 is flush with the two pressing pieces. When the cardboard box 100 slides to this position, its two ends are just in a nearly vertical state after being folded upward (as Figure 10 shown).

[0036] Preferably, a support rod 12 protrudes inward from the inner bottom of the baffle 11, and the head end of the first telescopic rod 21 communicates with the tail end of the support rod, so that the support rod 12 can support both ends of the cardboard box.

[0037] In one embodiment, lifting platforms 3 that can be lifted up and down are symmetrically provided on both sides of the conveying device, and the end of the first telescopic rod 21 is rotatably connected to one end of the lifting platform, that is, the height of a certain section of the first telescopic rod is controlled by the lifting of the lifting platform, so as to better adapt to the folding of cartons of different lengths. The larger the folded dimensions of the two ends of the carton, the higher the lifting platform is, so as to better support the folded carton and prevent the carton from being deflected and deformed outward due to gravity and the like; conversely, the smaller the folded dimensions of the two ends of the carton, the lower the lifting platform is, so as to prevent the height of the lifting platform from being higher than the folded dimensions of the high end of the carton so that the two ends of the folded carton fall under the first telescopic rod; at this time, when the carton is conveyed to the position of the fixed platform and passes through the fixed platform outward, because the distance between the front and rear ends of the fixed platforms on both sides is the same, the folded state of the two ends of the carton 100 remains unchanged, that is, it will not continue to fold downward (such as Figure 10 shown).

[0038] In one embodiment, the lifting platform 3 includes a fixed plate 31 whose height is higher than the conveying gap and a first driving device for driving the fixed plate 31 to move up and down, and the end of the first telescopic rod 21 is rotatably connected to the head end of the fixed plate 31; the first driving device includes a first rotating seat 32 arranged on the outside of the conveying device, a first screw 33 threadedly connected to the first rotating seat 32 and vertically arranged, and a first motor 34 that drives the first screw 33 to rotate and move up and down.

[0039] Preferably, a first screw nut 35 is rotatably provided in the middle of the first rotating seat 32, the first screw 33 is passed through the first rotating seat 32 and the first screw nut up and down and is threadedly connected to the first screw nut 35, and the output shaft of the first motor 34 is meshed with the first screw nut through a gear or is transmission-connected to the first screw nut 35 through a first belt 36.

[0040] Preferably, there are two first rotating seats 32 and two first screws 33 in the lifting platform 3, the two first screws 33 are respectively passed through the two first rotating seats 32, the fixing plate 31 is fixed to the upper ends of the two first screws, the first motor 34 is connected to one of the first screws 33, and the two first screws 33 are connected by belt transmission.

[0041] In one embodiment, the origami cross bar further comprises a second telescopic rod 22, the head end of the second telescopic rod 22 is rotatably connected to the end of the fixed plate 31, and the end is rotatably connected to the conveying device. By utilizing its retractable and rotatable characteristics, the second telescopic rod 22 is adaptively stretched or contracted during the process of ascending and descending with the lifting platform 3, so as to avoid the problem of the second telescopic rod being stuck during the process of ascending and descending with the lifting platform 3; the height of the second telescopic rod 22 is gradually reduced along the conveying direction of the conveying device, and the distance between the second telescopic rods 22 on both sides is gradually reduced along the conveying direction of the conveying device, that is, the second telescopic rods 22 on both sides are gradually retracted and gradually lowered from front to back, so that the two ends of the carton slide forward along the fixed platform 31 and are placed under the second telescopic rods 22 on both sides, and the second telescopic rods are gradually used to press down and fold the two ends of the carton 100 (such as Figure 11 shown).

[0042] In one embodiment, the first telescopic rod and the second telescopic rod are both telescopic structures composed of two front and rear rods of different sizes.

[0043] In another embodiment, the first telescopic rod and the second telescopic rod may also be a sliding telescopic structure composed of two front and rear rods that are slidably sleeved.

[0044] In one embodiment, a second driving device is provided on both sides of the end of the conveying device, and the second driving device includes a second rotating seat 41 fixed on the conveying device, a second lead screw 42 threadedly connected to the second rotating seat 41 and horizontally passing through the second rotating seat 41, and a second motor 43 driving the second lead screw 42 to rotate and move along the width direction of the conveying device. The inner end of the second lead screw 42 extends inward to the top of the conveying device, and the end of the second telescopic rod 22 is rotatably connected to the inner end of the second lead screw 42. The height of the second lead screw 42 is higher than the height of the conveying gap, ensuring that the carton can pass under the two second lead screws 42 during forward conveyance.

[0045] Preferably, a second screw nut 44 is rotatably provided in the middle of the second rotating seat 41, the second screw 42 is passed through the second rotating seat 41 and the second screw nut 44 on the left and right and is threadedly connected to the second screw nut 44, and the output shaft of the second motor 43 is meshed with the second screw nut 44 through gears or is transmission-connected to the second screw nut 44 through a second belt 45.

[0046] In one embodiment, third driving devices are symmetrically provided on both sides of the bracket 1 for driving the two baffles 12 to move closer to or away from each other. The third driving device includes a third lead screw 51 which is rotatably arranged on the bracket 1 through a bearing and horizontally passes through the baffle 11 inwardly, and a third motor 52 which drives the third lead screw 51 to rotate. The inner end of the third lead screw 51 extends inwardly to the top of the transmission device and is perpendicular to the transmission device. A lead screw nut is threadedly connected to the third lead screw 51, and the baffle 11 is fixedly connected to the lead screw nut, so that the third lead screw 51 is driven to rotate under the action of the third motor 52, and the lead screw nut moves back and forth along the third lead screw 51 and drives the baffle to move back and forth.

[0047] In one embodiment, a first guide limit rod 13 and a second guide limit rod 14 located above the conveying device are spaced apart at the front and rear ends of the upper end of the bracket 1. The upper end of the baffle 11 is slidably disposed on the first guide limit rod 14 to prevent the baffle 11 from self-rotating when moving with the screw nut; the upper end of the pressing plate 10 is slidably disposed on the second guide limit rod 14, and fourth driving devices (not shown in the figure) are symmetrically disposed on both sides of the bracket 1 for driving the two pressing plates to move closer to or away from each other. The fourth driving device is the same as the third driving device, so that the positions of the two pressing plates can be adjusted according to the folding positions required for folding cartons of different sizes.

[0048] In one embodiment, the conveying device includes a base 60, two conveying belts 61 slidably arranged on the base 60 and symmetrically arranged, and two fifth driving devices symmetrically arranged on the base 60 and driving the two conveying belts 61 to move closer to or away from each other, so that the distance between the two conveying belts 61 can be adjusted according to the folding size of the carton. The two conveying belts 61 are respectively slidably arranged on the base 60 and the bracket 1 through the support seat 62. The surface of the conveying belt 61 is flush with the surface of the support seat 62. The two pressing plates 10 are respectively located above the two support seats 62. The base 60 is provided with at least one guide shaft 63 passing through the two support seats 62, which is used to play a sliding guide role; the second rotating seat 41 is arranged on the end of the support seat 62.

[0049] In one embodiment, the fifth driving device includes a fifth screw 71 that is rotatably arranged on the base 60 through a bearing and horizontally passes through the corresponding side support seat 62, and a fifth motor 72 that drives the fifth screw 71 to rotate. A screw nut is threadedly connected to the fifth screw 71, and the support seat 62 is fixedly connected to the screw nut.

[0050] Preferably, there are two fifth screws 71 in each fifth drive device, each fifth screw 71 is provided with a screw nut threadedly connected to the support seat, the two fifth screws 71 are respectively passed through the front and rear ends of the support seat 62, the fifth motor 72 is transmission connected to one of the fifth screws 71, and the two fifth screws 71 are transmission connected via a fifth belt 73.

[0051] In other embodiments, the first driving device, the second driving device, the third driving device, the fourth driving device, and the fifth driving device may also adopt a belt transmission mechanism or a cylinder transmission mechanism, etc. Both the belt transmission mechanism and the cylinder transmission mechanism are conventional transmission mechanisms in the prior art, and will not be elaborated in detail here.

[0052] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used herein to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to helping understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An automatically adjustable paper folding device, characterized in that: It comprises a conveying device and a bracket arranged at one end of the head of the transmission device, the bracket is provided with two pressure plates located above the conveying device at intervals, a conveying gap for the carton to be conveyed through is formed between the pressure plates and the conveying device, the bracket is also slidably provided with two baffles respectively located on the outer sides of the two pressure plates, the two sides of the bracket are symmetrically provided with third driving devices respectively used to drive the two baffles to approach or move away from each other, both sides of the conveying device are provided with origami cross bars extending along the conveying direction thereof, the head ends of the origami cross bars on both sides are respectively rotatably connected to the inner bottoms of the two baffles, and the connection between the origami cross bars and the baffles is flush with or lower than the table surface of the conveying device, and the end of the origami cross bar is rotatably connected to the conveying device and its height is higher than the conveying gap; A lifting platform that can be lifted up and down is symmetrically arranged on both sides of the conveying device, and the lifting platform includes a fixed plate with a height higher than the conveying gap and a first driving device that drives the fixed plate to move up and down; The origami crossbar comprises a first telescopic rod and a second telescopic rod, the head end of the first telescopic rod is rotatably connected to the inner bottom of the baffle, and the end thereof is rotatably connected to the head end of the fixed plate; the first telescopic rod is gradually raised along the conveying direction of the conveying device, and the distance between the first telescopic rods on both sides is gradually reduced along the conveying direction of the conveying device, and the distance between the ends of the first telescopic rods on both sides is made ≤ the distance between the two pressing sheets; the head end of the second telescopic rod is rotatably connected to the end of the fixed plate, and the end thereof is rotatably connected to the conveying device; the second telescopic rod is gradually lowered along the conveying direction of the conveying device, and the distance between the second telescopic rods on both sides is gradually reduced along the conveying direction of the conveying device; The conveying device includes a base, two conveying belts slidably arranged on the base and symmetrically arranged, and two fifth driving devices symmetrically arranged on the base and driving the two conveying belts to move closer to or away from each other. The two conveying belts are respectively slidably arranged on the base and the bracket through support seats, the surface of the conveying belts is flush with the surface of the support seat, and the two pressing plates are respectively located above the two support seats.

2. The automatically adjustable paper folding device according to claim 1, characterized in that: The first driving device comprises a first rotating seat arranged outside the conveying device, a first lead screw threadedly connected to the first rotating seat and vertically arranged, and a first motor driving the first lead screw to rotate and move up and down.

3. The automatically adjustable paper folding device according to claim 2, characterized in that: A second driving device is provided on both sides of the end of the conveying device, and the second driving device includes a second rotating seat fixed on the conveying device, a second screw threadedly connected to the second rotating seat and horizontally arranged, and a second motor that drives the second screw to rotate and move along the width direction of the conveying device. The inner end of the second screw extends inwardly to the top of the conveying device, and the end of the second telescopic rod is rotatably connected to the inner end of the second screw.

4. The automatically adjustable paper folding device according to any one of claims 1 to 3, characterized in that: The third driving device includes a third lead screw rotatably arranged on a bracket and horizontally arranged, and a third motor driving the third lead screw to rotate. The inner end of the third lead screw extends inwardly to the top of the transmission device and is perpendicular to the transmission device. A lead screw nut is threadedly connected to the third lead screw, and the baffle is fixedly connected to the lead screw nut.

5. The automatically adjustable paper folding device according to claim 4, characterized in that: Two first guide limit rods and a second guide limit rod are spaced apart at the front and rear ends of the upper end of the bracket and are located above the conveying device. The upper end of the baffle is slidably disposed on the first guide limit rod, and the upper end of the pressing plate is slidably disposed on the second guide limit rod, and fourth driving devices are symmetrically disposed on both sides of the bracket for driving the two pressing plates to move closer to or away from each other.

6. The automatically adjustable paper folding device according to claim 5, characterized in that: The base is provided with at least one guide shaft penetrating the two support seats.

7. The automatically adjustable paper folding device according to claim 6, characterized in that: The fifth driving device includes a fifth lead screw rotatably arranged on the base and horizontally passing through the support seat, and a fifth motor driving the fifth lead screw to rotate. A lead screw nut is threadedly connected to the fifth lead screw, and the support seat is fixedly connected to the lead screw nut.

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