Edge folding mechanism and box folding device

Abstract

The utility model relates to the technical field of folding box manufacturing, and provides an edge folding mechanism and a box folding device. An operation bedplate of the box folding device comprises a primary forming position and a secondary forming position; the four limiting forming rods are distributed in a rectangular shape and fixed to the one-time forming position. The number of the edge folding mechanisms is two, the two edge folding mechanisms are arranged in the first horizontal direction in a mirror image mode, the edge pressing swing arms directly face each other, and bases of the edge folding mechanisms are fixed to the secondary forming position. A base of the edge folding mechanism is provided with a first driving piece; the first driving piece can drive the support to reciprocate relative to the base in the first horizontal direction. The second driving piece can enable the blank pressing swing arm to rotate relative to the bracket; one end of the folding swing arm is rotatably connected with the support, the rotating axis is parallel to the second horizontal direction, and the other end can be turned into the box body. Thus, the edge pressing swing arm can bend the paperboard in the rotating direction of the edge pressing swing arm and rotate along the folding marks, concentrated stress of the paperboard can be reduced, and new folding marks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of folding box manufacturing, in particular to a folding edge mechanism and a folding box device. Background Art

[0002] A folding box machine is a device that automatically folds a flat paper box into an inner box and is an indispensable part of the automated production packaging process. Among them, the paper box forming mechanism, as the core mechanism, is used for bending the sides of the cardboard, which greatly affects the operation quality.

[0003] Generally, after pre-processing, the cardboard has creases on its surface, and each part is bent along the creases to obtain a box body that meets the factory requirements. However, it is found in the production process that the deformation of the box body caused by the generation of new creases during bending is particularly prominent.

[0004] The reason is that the existing paper box forming mechanism includes a frame and a contact rod. The contact rod is fixed to the frame and horizontally placed. Generally, the contact rod is located above the crease position. When aligning and processing the cardboard, the frame moves horizontally, and the contact rod abuts against the folding page, causing the folding page to bend into the box along the crease. However, in the case of low crease clarity, the linear impact causes the folding page to form new creases around the crease and flip along the new creases, resulting in inconsistent width dimensions between the folding page and the side wall of the box body, and the finished box body is loose or squeezed and deformed.

[0005] Therefore, there is an urgent need for a folding edge mechanism and a folding box device to solve the above technical problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a folding edge mechanism and a folding box device, which can enable the cardboard to rotate along with the crease, reduce the generation of concentrated stress of the cardboard, and reduce the generation of new creases, thereby improving the qualified rate of the paper box.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] The folding edge mechanism includes:

[0009] A base, on which a first driving member is installed;

[0010] A bracket, which is slidably connected to the base, and the first driving member can drive the bracket to reciprocate relative to the base along a first horizontal direction;

[0011] A pressing edge swing arm, one end of which is hinged to the bracket, the axis of the hinge is parallel to a second horizontal direction, and is connected to the bracket through a second driving member, and the second driving member can make the pressing edge swing arm rotate relative to the bracket;

[0012] The folding swing arm, one end of the folding swing arm is rotatably connected to the bracket, the axis of rotation is parallel to the second horizontal direction, and the other end can be turned into the inner side of the box body;

[0013] The first horizontal direction and the second horizontal direction are perpendicular.

[0014] As a preferred technical solution of the hemming mechanism, two pressing swing arms are symmetrically arranged in the second horizontal direction, the two pressing swing arms are connected by a connecting rod, and the second driving member is rotatably connected to the connecting rod.

[0015] As a preferred technical solution of the hemming mechanism, the other end of the pressing swing arm is provided with a round chamfer.

[0016] As a preferred technical solution of the hemming mechanism, the folding swing arm includes a first connecting portion, a second connecting portion and an abutting portion. The first connecting portion, the second connecting portion and the abutting portion are relatively fixed. The second connecting portion is hinged to the bracket. The first connecting portion is connected to the bracket through a third driving member, and the abutting portion can be turned over into the box body.

[0017] As a preferred technical solution of the hemming mechanism, it further includes a first suction cup. The adsorption surface of the first suction cup faces away from the bracket and is used for adsorbing the side wall of the box body.

[0018] A box folding device is also provided, which includes a frame, a limiting forming rod and the above-mentioned hemming mechanism. The frame includes a working table board. The working table board includes a primary forming position and a secondary forming position; four limiting forming rods are provided, distributed in a rectangle and fixed to the primary forming position; two hemming mechanisms are provided, and the two hemming mechanisms are mirror-symmetrically arranged in the first horizontal direction and the pressing swing arms face each other. The base of the hemming mechanism is fixed to the secondary forming position.

[0019] As a preferred technical solution of the box folding device, the box folding device further includes a pushing mechanism. The pushing mechanism includes a fourth driving member and a loading plate. The loading plate is slidably connected to the working table board. The fourth driving member can drive the loading plate to reciprocate between the primary forming position and the secondary forming position. The loading plate is used for carrying the box body.

[0020] As a preferred technical solution of the box folding device, the box folding device further includes a stamping mechanism. The stamping mechanism is located above the primary forming position. The stamping mechanism includes a fifth driving member and a stamping bottom plate. One end of the fifth driving member is fixed to the top of the frame, and the other end is fixed to the stamping bottom plate, and can drive the stamping bottom plate to reciprocate in the vertical direction;

[0021] The above-mentioned first horizontal direction, the above-mentioned second horizontal direction and the above-mentioned vertical direction are perpendicular to each other in pairs.

[0022] As a preferred technical solution of the above-mentioned folding box device, the folding box device further includes a feeding mechanism. The above-mentioned feeding mechanism includes a material taking plate and a sixth driving member. The above-mentioned machine frame further includes a feeding position. The above-mentioned sixth driving member can drive the above-mentioned material taking plate to reciprocate between the above-mentioned feeding position and the above-mentioned one-time forming position. The above-mentioned material taking plate is provided with suction cups for adsorbing cardboard.

[0023] As a preferred technical solution of the above-mentioned folding box device, the above-mentioned material taking plate is provided with a U-shaped groove. When the above-mentioned material taking plate is located at the above-mentioned one-time forming position, the above-mentioned stamping bottom plate can pass through the above-mentioned U-shaped groove along the above-mentioned vertical direction. The above-mentioned stamping bottom plate is provided with suction cups and can adsorb the above-mentioned cardboard.

[0024] Advantages of the utility model:

[0025] The limiting forming rods are perpendicular to the working table board. Four limiting forming rods enclose a rectangular area and are respectively located at the vertices of the rectangle. During use, the cardboard is located directly above the one-time forming position. Align the bottom plate of the cardboard with the rectangular area. The cardboard is perpendicular to the limiting forming rods. Move the cardboard along the axial direction of the limiting forming rods towards the side of the working table board. The side wall of the cardboard is turned relative to the bottom plate due to abutting against the limiting forming rods until the bottom plate fits against the working table board. At this time, the side wall is perpendicular to the bottom plate, completing one fold; Subsequently, move the cardboard that has completed one fold to the secondary forming position.

[0026] During use, when the secondary forming position is vacant, the frames of the two folding edge mechanisms are relatively stationary. When the cardboard that has completed one fold is placed at the secondary forming position, the cardboard is located between the two folding edge mechanisms. The second driving member drives the free end of the edge pressing swing arm to rotate downward from top to bottom. During the rotation of the edge pressing swing arm, it can bend the first folding portion inward along the second crease. At this time, the first folding portion and the second folding portion tend to be coplanar, while the first folding portion and the supporting portion tend to be perpendicular. Subsequently, the third driving member drives the folding swing arm to rotate. During the flipping process of the free end of the folding swing arm, it can press against the second folding portion from top to bottom and bend it relative to the first folding portion along the third crease, so that the second folding portion and the supporting portion are attached to the inner side of the box body. Subsequently, start the first driving member and move a small distance along the first horizontal direction to make the forces on the second folding portion and the first folding portion balanced.

[0027] In this way, the first folding portion rotates relative to the supporting portion along the second crease as the edge pressing swing arm rotates, conforming to the trend of the second crease. It is not easy to generate new creases between the first folding portion and the supporting portion. The produced box body meets the preset size, improving the product consistency and the qualified product rate. Description of the drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments of the present utility model. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained according to the content of the embodiments of the present utility model and these attached drawings.

[0029] Figure 1 is a schematic structural diagram of a folding box device provided by an embodiment of the present utility model;

[0030] Figure 2 is a side view of a folding box device provided by an embodiment of the present utility model;

[0031] Figure 3 is an assembly schematic diagram of a stamping mechanism and a feeding mechanism provided by an embodiment of the present utility model;

[0032] Figure 4 is a schematic structural diagram of a hemming mechanism provided by an embodiment of the present utility model;

[0033] Figure 5 is a side view of a hemming mechanism provided by an embodiment of the present utility model;

[0034] Figure 6 is a schematic structural diagram of a cardboard provided by an embodiment of the present utility model.

[0035] In the figure:

[0036] X, the first horizontal direction; Y, the second horizontal direction; Z, the vertical direction;

[0037] 100, hemming mechanism; 110, base; 120, bracket; 130, edge pressing swing arm; 140, second driving member; 150, folding swing arm; 151, first connecting portion; 152, second connecting portion; 153, abutting portion; 160, connecting rod; 170, third driving member; 180, first suction cup;

[0038] 210, working table board; 211, primary forming position; 212, secondary forming position;

[0039] 300, limiting forming rod;

[0040] 410, loading board;

[0041] 500, stamping mechanism; 510, fifth driving member; 520, stamping bottom plate;

[0042] 600, feeding mechanism; 610, material taking board; 611, U-shaped groove; 620, sixth driving member;

[0043] 700, cardboard; 710, bottom wall; 721, first crease; 722, support portion; 723, second crease; 724, first bending portion; 725, second crease; 726, second bending portion. Detailed implementation mode

[0044] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0045] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; 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 internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0046] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0047] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, 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 therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0048] Such as Figure 6As shown, the cardboard 700 is bent to form a box body. The cardboard 700 is pre-treated in advance to form a bottom plate and several side plates. For the convenience of description, a rectangular box body is taken as an example. The cardboard 700 includes a bottom plate located in the middle and four side walls respectively connected to the bottom plate. Taking one of the side walls as an example, the side wall includes a support portion 722, a first bending portion 724, and a second bending portion 726. A first crease 721 is formed between the support portion 722 and the bottom plate, a second crease 725 is formed between the support portion 722 and the first bending portion 724, and a third crease is formed between the second bending portion 726 and the first bending portion 724. The first crease 721, the second crease 725, and the third crease are parallel.

[0049] As Figures 1 to 3 As shown, the present utility model provides a folding box device, which includes a frame, a limiting forming rod 300, and a folding edge mechanism 100. The frame includes an operating table plate 210, and the operating table plate 210 includes a primary forming position 211 and a secondary forming position 212; four limiting forming rods 300 are provided, which are distributed in a rectangular shape and fixed to the primary forming position 211; two folding edge mechanisms 100 are provided, and the two folding edge mechanisms 100 are mirror-symmetrically arranged in the first horizontal direction X and the pressing edge swing arms 130 face each other. The base 110 of the folding edge mechanism 100 is fixed to the secondary forming position 212.

[0050] Specifically, the limiting forming rod 300 is perpendicular to the operating table plate 210. The four limiting forming rods 300 enclose a rectangular area and are respectively located at the vertices of the rectangle. During use, the cardboard 700 is located directly above the primary forming position 211. The bottom plate of the cardboard 700 is overlapped with the rectangular area. The cardboard 700 is perpendicular to the limiting forming rod 300, and the cardboard 700 is moved along the axial direction of the limiting forming rod 300 towards the side of the operating table plate 210. The side walls of the cardboard 700 are flipped relative to the bottom plate due to abutting against the limiting forming rod 300 until the bottom plate is attached to the operating table plate 210. At this time, the side walls are perpendicular to the bottom plate, and the first bending is completed; then the cardboard 700 that has completed the first bending is moved to the secondary forming position 212.

[0051] Specifically, as Figure 4 and Figure 5As shown in the figure, the hemming mechanism 100 includes a base 110, a bracket 120, a hemming swing arm 130, and a folding swing arm 150. Among them, the base 110 is installed with a first driving member; the bracket 120 is slidably connected to the base 110, and the first driving member can drive the bracket 120 to reciprocate relative to the base 110 along the first horizontal direction X; one end of the hemming swing arm 130 is hinged to the bracket 120, and the axis of the hinge is parallel to the second horizontal direction Y, and is connected to the bracket 120 through a second driving member 140. The second driving member 140 can make the hemming swing arm 130 rotate relative to the bracket 120; one end of the folding swing arm 150 is rotatably connected to the bracket 120, and the axis of rotation is parallel to the second horizontal direction Y, and the other end can turn into the inner side of the box body.

[0052] Specifically, the hemming swing arm 130 relative to the bracket 120 includes a first position and a second position. When in the first position, the free end of the hemming swing arm 130 is adjacent to the bracket 120 in the first horizontal direction X. At this time, in the projection in the second horizontal direction Y, the overlapping area of the hemming swing arm 130 and the bracket 120 is S1; when in the second position, the free end of the hemming swing arm 130 is away from the bracket 120 in the first horizontal direction X. At this time, in the projection in the second horizontal direction Y, the overlapping area of the hemming swing arm 130 and the bracket 120 is S2, and S1 > S2 is satisfied. The hemming swing arm 130 is driven by the first driving member to rotate and switch between the first position and the second position. The folding swing arm 150 relative to the bracket 120 includes a third position and a fourth position. When in the third position, the other end of the folding swing arm 150 is away from the base 110 in the vertical direction Z. When in the fourth position, the other end of the folding swing arm 150 is close to the base 110 in the third direction Z and is located below the hemming swing arm 130 in the second position.

[0053] Furthermore, the two hemming mechanisms 100 include a fifth position and a sixth position. When in the fifth position, the frames of the two hemming mechanisms 100 are separated from each other in the first horizontal direction X. When in the sixth position, the frames of the two hemming mechanisms 100 are close to each other. The hemming mechanism 100 realizes the switching between the fifth position and the sixth position by driving the frame through the first driving member.

[0054] During use, when the secondary forming position 212 is vacant, the frames of the two hemming mechanisms 100 are relatively stationary, the edge pressing swing arm 130 is in the first position, and the folding swing arm 150 is in the third position; when the cardboard 700 that has been bent once is placed at the secondary forming position 212, the cardboard 700 is located between the two hemming mechanisms 100. The second driving member 140 is activated to switch the edge pressing swing arm 130 from the first position to the second position. During the rotation of the edge pressing swing arm 130, the first bent portion 724 can be bent inward along the second fold line 725. At this time, the first bent portion 724 and the second bent portion 726 approach coplanarity, while the first bent portion 724 and the support portion 722 approach perpendicularity. Subsequently, the third driving member 170 is activated to switch the folding swing arm 150 from the third position to the fourth position. During the flipping of the free end of the folding swing arm 150, it can press against the second bent portion 726 from top to bottom and bend the second bent portion 726 relative to the first bent portion 724 along the third fold line, so that the second bent portion 726 and the support portion 722 are attached to the inner side of the box body. Subsequently, the first driving member is activated to cause the frame to switch between the fifth position and the sixth position and move a small range in the first horizontal direction X, so that the forces on the second bent portion 726 and the first bent portion 724 are balanced.

[0055] In this way, as the edge pressing swing arm 130 rotates, the first bent portion 724 rotates relative to the support portion 722 along the second fold line 723, conforming to the trend of the second fold line 723. It is not easy to generate new fold lines between the first bent portion 724 and the support portion 722, and the produced box body meets the preset dimensions, improving the product consistency and the yield rate.

[0056] It should be noted that in this embodiment, when the edge pressing swing arm 130 is in the first position, the free end of the edge pressing swing arm 130 is located above the hinge point between the edge pressing swing arm 130 and the bracket 120. When it is switched to the second position, the second driving member 140 rotates the free end of the edge pressing swing arm 130 from top to bottom. During the rotation, the free end preferentially abuts against the first bent portion 724 or the second bent portion 726 of the cardboard 700 in the rotation direction and will not affect the support portion 722 of the cardboard 700.

[0057] Optionally, two edge pressing swing arms 130 are symmetrically arranged in the second horizontal direction Y. The two edge pressing swing arms 130 are connected by a connecting rod 160, and the second driving member 140 is rotationally connected to the connecting rod 160.

[0058] Optionally, a round chamfer is provided at the other end of the edge pressing swing arm 130. In this way, when the edge pressing swing arm 130 abuts against the first bent portion 724 or the second bent portion 726, stress concentration can be avoided, and scratches are not formed on the surface of the cardboard 700.

[0059] Specifically, the folding swing arm 150 includes a first connecting portion 151, a second connecting portion 152, and an abutting portion 153. The first connecting portion 151, the second connecting portion 152, and the abutting portion 153 are relatively fixed. The second connecting portion 152 is hinged to the bracket 120. The first connecting portion 151 is connected to the bracket 120 through a third driving member 170. The abutting portion 153 can be turned over into the box body.

[0060] Optionally, the hemming mechanism 100 further includes a first suction cup 180. The adsorption surface of the first suction cup 180 faces away from the bracket 120 and is used to adsorb the side wall of the cardboard 700.

[0061] Specifically, the first suction cup 180 is used to adsorb the supporting portion 722 of the side wall of the cardboard 700. In this way, the supporting portion 722 is always kept perpendicular to the bottom plate, avoiding that when the pressing swing arm 130 bends the first bending portion 724 or the second bending portion 726, the supporting portion 722 is pushed aside, resulting in the deformation of the box body.

[0062] Optionally, the box folding device further includes a pushing mechanism. The pushing mechanism includes a fourth driving member and a loading plate 410. The loading plate 410 is slidably connected to the working table plate 210. The fourth driving member can drive the loading plate 410 to reciprocate between the one-time forming position 211 and the secondary forming position 212. The loading plate 410 is used to carry the box body. Using the pushing mechanism can make the bending process of the cardboard 700 continuous, reduce the intermittent interval, and improve the working speed.

[0063] Optionally, the box folding device further includes a stamping mechanism 500. The stamping mechanism 500 is located above the one-time forming position 211. The stamping mechanism 500 includes a fifth driving member 510 and a stamping bottom plate 520. One end of the fifth driving member 510 is fixed to the top of the machine frame, and the other end is fixed to the stamping bottom plate 520, and can drive the stamping bottom plate 520 to reciprocate along the vertical direction Z.

[0064] The first horizontal direction X, the second horizontal direction Y, and the vertical direction Z are perpendicular to each other in pairs. The stamping bottom plate 520 is used to move the bottom plate of the cardboard 700 toward the side where the working table plate 210 is located. With the relative movement between the bottom plate and the side plate, the side plate is turned up under the abutting action of the limiting forming rod 300.

[0065] Optionally, the folding box device further includes a feeding mechanism 600, which includes a feeding plate 610 and a sixth driving member 620. The frame further includes a feeding position. The sixth driving member 620 can drive the feeding plate 610 to reciprocate between the feeding position and the primary forming position 211. The feeding plate 610 is equipped with a suction cup for adsorbing the paperboard 700. Specifically, the feeding position is located on one side of the second horizontal direction Y of the work table 210. A guide rail is provided on the top of the frame along the second horizontal direction Y. The feeding plate 610 slides along the guide rail. The sixth driving member 620 is installed on the guide rail so that the feeding plate 610 can reciprocate between the feeding position and the primary forming position 211 along the guide rail. The feeding plate 610 adsorbs the paperboard 700 through the suction cup. The transportation of the paperboard 700 is completed.

[0066] Optionally, the pick-up plate 610 is provided with a U-shaped groove 611. When the pick-up plate 610 is located at the primary forming position 211, the stamping bottom plate 520 can pass through the U-shaped groove 611 along the vertical direction Z. The stamping bottom plate 520 is equipped with a suction cup to absorb the paperboard 700. Specifically, the pick-up plate 610 is provided with a plurality of suction cups, which are arranged along the edge of the U-shaped groove 611. The U-shaped groove 611 avoids the bottom plate of the paperboard 700 in the vertical direction Z. The picking plate 610 and the stamping bottom plate 520 are at the same distance from the work surface in the vertical direction Z at the primary forming position 211. When the picking plate 610 moves from the loading position to the primary forming position 211 along the second horizontal direction Y, the stamping bottom plate 520 is located at the origin position and can be inserted into the U-shaped groove 611. The suction cup of the stamping bottom plate 520 absorbs the bottom plate of the cardboard 700, while the suction cup of the picking plate 610 abandons the cardboard 700. The stamping bottom plate 520 presses the cardboard 700 at the primary forming position 211 along the vertical direction Z to complete the initial bending, and the picking plate 610 returns to the loading position to grab the cardboard 700.

[0067] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Folding mechanism, characterized in that: include: A base (110), wherein the base (110) is provided with a first driving member; a bracket (120), the bracket (120) being slidably connected to the base (110), and the first driving member being capable of driving the bracket (120) to reciprocate relative to the base (110) along a first horizontal direction (X); A side-pressing swing arm (130), one end of which is hinged to the bracket (120), the axis of which is parallel to the second horizontal direction (Y), and is connected to the bracket (120) via a second driving member (140), and the second driving member (140) can enable the side-pressing swing arm (130) to rotate relative to the bracket (120); A folding swing arm (150), one end of which is rotatably connected to the bracket (120), the axis of rotation being parallel to the second horizontal direction (Y), and the other end of which can be folded into the inner side of the box body.

2. The folding mechanism according to claim 1, characterized in that: Two edge pressing swing arms (130) are symmetrically arranged in the second horizontal direction (Y); the two edge pressing swing arms (130) are connected via a connecting rod (160); and the second driving member (140) is rotationally connected to the connecting rod (160).

3. The folding mechanism according to claim 1, characterized in that: The other end of the edge pressing swing arm (130) is provided with a round chamfer.

4. The folding mechanism according to claim 1, characterized in that: The folding swing arm (150) comprises a first connecting portion (151), a second connecting portion (152) and a contact portion (153); the first connecting portion (151), the second connecting portion (152) and the contact portion (153) are relatively fixed; the second connecting portion (152) is hinged to the bracket (120); the first connecting portion (151) is connected to the bracket (120) via a third driving member (170); and the contact portion (153) can be flipped into the box body.

5. The folding mechanism according to claim 1, characterized in that: It also includes a first suction cup (180), wherein the suction surface of the first suction cup (180) faces away from the bracket (120) and is used for sucking the side wall of the box body.

6. A box folding device, characterized in that: It comprises a frame, a limiting forming rod (300) and a folding mechanism (100) as described in any one of claims 1 to 5, wherein the frame comprises a working table (210), and the working table (210) comprises a primary forming position (211) and a secondary forming position (212); four limiting forming rods (300) are arranged, distributed in a rectangular shape, and fixed to the primary forming position (211); two folding mechanisms (100) are arranged, and the two folding mechanisms (100) are mirror-imaged in the first horizontal direction (X) and the edge pressing swing arm (130) is directly opposite, and the base (110) of the folding mechanism (100) is fixed to the secondary forming position (212).

7. The box folding device according to claim 6, characterized in that: The invention also includes a pushing mechanism, wherein the pushing mechanism includes a fourth driving member and a carrier plate (410), wherein the carrier plate (410) is slidably connected to the workbench (210), and the fourth driving member can drive the carrier plate (410) to move back and forth between the primary molding position (211) and the secondary molding position (212), and the carrier plate (410) is used to carry the box body.

8. The box folding device according to claim 6, characterized in that: The machine also comprises a stamping mechanism (500), the stamping mechanism (500) being located above the primary forming position (211), the stamping mechanism (500) comprising a fifth driving member (510) and a stamping bottom plate (520), one end of the fifth driving member (510) being fixed to the top of the frame, and the other end being fixed to the stamping bottom plate (520), and being capable of driving the stamping bottom plate (520) to reciprocate along the vertical direction (Z); The first horizontal direction (X), the second horizontal direction (Y) and the vertical direction (Z) are perpendicular to each other.

9. The box folding device according to claim 8, characterized in that: The machine frame further comprises a loading mechanism (600), wherein the loading mechanism (600) comprises a feeding plate (610) and a sixth driving member (620), and the frame further comprises a loading position, wherein the sixth driving member (620) can drive the feeding plate (610) to reciprocate between the loading position and the primary forming position (211), and the feeding plate (610) is provided with a suction cup for adsorbing the paperboard (700).

10. The box folding device according to claim 9, characterized in that: The material taking plate (610) is provided with a U-shaped groove (611); when the material taking plate (610) is located at the primary forming position (211), the stamping bottom plate (520) can pass through the U-shaped groove (611) along the vertical direction (Z); and the stamping bottom plate (520) is provided with a suction cup capable of adsorbing the paperboard (700).

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