A paper box forming ear folding plate mechanism

Abstract

A paper box forming ear plate folding mechanism includes: a bracket body, a lifting device and an ear plate folding clamp device. The ear plate folding clamp device includes an ear plate folding cylinder, and a connecting plate and an external forming plate are arranged on both sides of the ear plate folding cylinder. The ear plate folding cylinder is connected to one end of the connecting plate; the other end of the connecting plate is connected to the external forming plate. An internal forming plate is symmetrically arranged on the lower side of the bottom of the ear plate folding cylinder, the external forming plate is located on the lower side of the bottom of the ear plate folding cylinder, and the internal forming plate is located on the lower side of the external forming plate. The lifting device includes a lifting cylinder, the lifting cylinder is fixed on the top of the bracket body, and the lifting cylinder is connected to the ear plate folding cylinder. With the mechanism of the present application, the internal and external forming plates cooperate to complete the folding of the ear plate, providing a new solution for the automatic folding and forming of the ear plate of a large paper box (with a size greater than 100X100X100mm), avoiding the complex process and high cost caused by gluing, and being efficient, stable and low-cost.

Description

Technical Field

[0001] The present application relates to the technical field of cartoning machines, and in particular to a paper box forming ear folding plate mechanism. Background Art

[0002] In the field of traditional cartoning machines, the molding of large white cardboard boxes with a size of more than 100X100X100mm has always been an industry problem. Even if the carton has been corrugated before the ear folding, when the ear folding is automatically sealed, the ear plate is too large and still has a certain degree of rigidity. The traditional mechanism will cause the entire ear plate to fold incorrectly and deform, resulting in the failure of the box body molding, and the qualified efficiency of the carton ear folding is low.

[0003] The traditional ear plate folding mechanism is composed of a rotating pressure plate and a fixed pressure plate. The fixed pressure plate presses one ear plate of the carton through a guide during the transportation of the carton body, and the rotating pressure plate presses the other ear plate of the carton through a driving device. This structure can only adapt to carton sizes less than 100X100X100mm. If the size exceeds this, the ear plate folding will fail due to the inherent rigidity of the carton.

[0004] At present, large paper boxes are mostly formed by slotted corrugated paper or manual box making, but this method is costly and the qualified efficiency of the paper box folding ear board is low. Summary of the invention

[0005] The present application provides a paper box forming ear plate folding mechanism, the main purpose of which is to improve the ear plate folding efficiency of large paper boxes with a size exceeding 100X100X100mm.

[0006] In one embodiment of the present application, a paper box forming ear folding plate mechanism is provided, comprising: a bracket body, a lifting device and an ear folding plate clamp device;

[0007] The folding ear plate clamp device comprises an ear plate folding cylinder, and a connecting plate and an external forming plate are arranged on both sides of the ear plate folding cylinder; the ear plate folding cylinder is connected to one end of the connecting plate; the other end of the connecting plate is connected to the external forming plate; the internal forming plates are symmetrically arranged on the lower side of the bottom of the ear plate folding cylinder, the external forming plate is located on the lower side of the bottom of the ear plate folding cylinder, and the internal forming plate is located on the lower side of the external forming plate;

[0008] The lifting device comprises a lifting cylinder, the lifting cylinder is fixed on the top of the bracket body, and the lifting cylinder is connected to the ear plate folding cylinder.

[0009] In one embodiment, the external forming plate includes a first ear plate folding plate and a second ear plate folding plate, the first ear plate folding plate is placed horizontally, the second ear plate folding plate is placed obliquely, and the second ear plate folding plates on the left and right sides are close to each other to form an eight-shape; one end of the first ear plate folding plate is fixedly connected to the connecting plate, and the other end is connected to the second ear plate folding plate.

[0010] In one embodiment, a mounting plate is provided on a side of the first ear plate folding plate away from the second ear plate folding plate, and at least one strip through hole is provided on the mounting plate, and a width direction of the strip through hole on the mounting plate is the same as a width direction between the left and right sides of the ear plate folding cylinder; the external forming plate is fixedly connected to the connecting plate via the strip through hole.

[0011] In one embodiment, the connecting plate includes a first connecting plate and a second connecting plate; one end of the first connecting plate is connected to the ear plate folding cylinder, and the other end is fixedly connected to the second connecting plate; at least one strip through hole is opened on the second connecting plate, one end of the second connecting plate is fixedly connected to the first connecting plate through the strip through hole, and the other end is fixedly connected to the mounting plate; the strip through hole on the second connecting plate is used to adjust the height of the second connecting plate.

[0012] In one embodiment, the folding ear plate clamp device also includes a third connecting plate, and the third connecting plate includes a horizontal plate and a vertical plate, the vertical plate is fixed to the side of the ear plate folding cylinder, and the horizontal plate is located on the lower side of the bottom of the ear plate folding cylinder.

[0013] In one embodiment, the internal forming plate includes a horizontal sorting plate, a fourth connecting plate and a fifth connecting plate, and the horizontal sorting plate, the first ear plate folding plate and the fifth connecting plate are parallel to each other; one end of the fourth connecting plate is connected to the fifth connecting plate, and the other end is connected to the horizontal sorting plate; at least one strip through hole is arranged on the fifth connecting plate, and the internal forming plate is fixedly connected to the horizontal plate through the strip through hole on the fifth connecting plate; the fourth connecting plates on the internal forming plates on the left and right sides are arranged close to each other.

[0014] In one embodiment, the internal forming plate also includes an end guide plate and a guide wedge block; the end guide plate is arranged on the side of the horizontal sorting plate away from the fourth connecting plate, and the end guide plate is bent toward the side close to the fourth connecting plate; the guide wedge block is fixed at the bottom of the internal forming plate, and the guide wedge block is used to organize items inside the paper box.

[0015] In one embodiment, the guide wedge block is a structure protruding downward along the bottom of the internal forming plate, and the guide wedge block has an inclined slope. The slopes on the left and right sides of the guide wedge blocks are away from each other and form an inverted figure eight shape.

[0016] In one embodiment, at least one linear bearing is disposed on the top of the bracket body, and at least one guide shaft is disposed between the top of the bracket body and the ear plate folding cylinder, wherein one end of the guide shaft is fixed to the ear plate folding cylinder, and the other end passes through the linear bearing.

[0017] In one embodiment, the lifting cylinder is an adjustable stroke lifting cylinder.

[0018] According to the carton forming ear plate folding mechanism in the above embodiment, by setting a lifting device, the up and down movement of the ear plate folding clamp device is realized, and the opening and closing of the ear plate folding clamp device is realized by the ear plate folding cylinder. Due to the provision of an external forming plate and an internal forming plate, the internal forming plate is located inside the carton, the external forming plate is located outside the carton, the ear plate is located between the external forming plate and the internal forming plate, the external forming plate completes the bending and pressing of the ear plate, and the internal forming plate limits and supports the ear plate. With the carton forming ear plate folding mechanism of the present application, the external forming plate and the internal forming plate cooperate to complete the folding of the ear plate, and the ear plate folding operation can be smoothly performed on large carton with a size exceeding 100X100X100mm, which is more efficient, and at the same time, the qualified rate of the ear plate folding can be improved, and the phenomenon of ear plate folding failure easily caused by the poor rigidity of the large carton can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the closed structure of the folding ear plate clamp device in one embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the open structure of the folding ear plate clamp device in one embodiment of the present application;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of a paper box forming ear folding plate mechanism in one embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the planar structure of a paper box forming folding ear plate mechanism in one embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the structure of an external molding plate in one embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the structure of an internal forming plate in one embodiment of the present application;

[0025] Figure 7 This is a schematic diagram of the structure of the internal forming plate in another embodiment of the present application;

[0026] Figure 8 This is a schematic diagram of the structure of the third connecting plate in one embodiment of the present application;

[0027] Fig. 9 for Figure 1 A schematic diagram of the structure is enlarged;

[0028] Fig.10 This is a schematic diagram of the paper box structure. DETAILED DESCRIPTION

[0029] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0030] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0031] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0032] like Figure 1-10 As shown, a paper box forming ear folding plate mechanism 10 includes: a bracket body 101, a lifting device and an ear folding plate clamp device.

[0033] The folding ear plate fixture device includes an ear plate folding cylinder 106, and a connecting plate 108 and an external forming plate 109 are arranged on both sides of the ear plate folding cylinder 106. The ear plate folding cylinder 106 is connected to one end of the connecting plate 108; the other end of the connecting plate 108 is connected to the external forming plate 109. The internal forming plates 110 are symmetrically arranged on the lower side of the bottom of the ear plate folding cylinder 106, and the external forming plate 109 is located on the lower side of the bottom of the ear plate folding cylinder 106, and the internal forming plate 110 is located on the lower side of the external forming plate 109.

[0034] The lifting device includes a lifting cylinder 102 , which is fixed on the top of the bracket body 101 , and the lifting cylinder 102 is connected to the ear plate folding cylinder 106 .

[0035] like Figure 3 As shown, the bracket body 101 is approximately a right-angle structure, having a horizontal bracket and a vertical bracket, and the top of the bracket body 101 is the upper surface of the horizontal bracket. The lifting cylinder 102 includes a first cylinder rod 103, one end of the first cylinder rod 103 is fixed on the ear plate folding cylinder 106, and the other end is arranged on the lifting cylinder 102. The ear plate folding cylinder 106 includes at least two second cylinder rods 107, at least one second cylinder rod 107 is arranged on the left and right sides of the ear plate folding cylinder 106, one end of the second cylinder rod 107 is arranged on the ear plate folding cylinder 106, and the other end is fixed on the connecting plate 108. The one end and the other end refer to the two opposite ends of the same component. Driven by the lifting cylinder 102, the first cylinder rod 103 drives the folding ear plate clamp device to move up and down. Driven by the ear plate folding cylinder 106, the second cylinder rod 107 moves left and right, so that the external forming plates 109 on the left and right sides move left and right, approaching or moving away from each other. Before the ear plates are folded, the ear plate folding clamp device descends, the internal forming plate 110 is located inside the carton to be folded, and the external forming plates 109 on the left and right sides are located outside the left and right ear plates of the carton. After the ear plate folding clamp device descends to a suitable height, under the action of the second cylinder rod 107, the external forming plates 109 on the left and right sides approach each other to fold the ear plates on the carton. When folding the ear plates, the ear plates are located between the external forming plates 109 and the internal forming plates 110, and the internal forming plates 110 support and limit the ear plates, while the external forming plates 109 complete the bending and pressing action on the ear plates. After the ear plates are folded, the external forming plates 109 on the left and right sides are driven away from each other by the second cylinder rod 107, and the ear plate folding clamp device moves upward to avoid interference with the carton conveying device. The ear plate clamp device is similar to an opening and closing device. Driven by the ear plate folding cylinder 106, the external forming plates 109 on the left and right sides of the ear plate folding cylinder 106 move closer to or farther away from each other, forming an open or closed state of the ear plate clamp device to complete the folding action of the ear plate.

[0036] The carton forming ear plate folding mechanism 10 in the above embodiment of the present application realizes the up and down movement of the ear plate folding fixture device by setting a lifting device, and realizes the opening and closing of the ear plate folding fixture device by the ear plate folding cylinder 106. Due to the provision of an external forming plate 109 and an internal forming plate 110, the internal forming plate 110 is located inside the carton, the external forming plate 109 is located outside the carton, the ear plate is located between the external forming plate 109 and the internal forming plate 110, the external forming plate 109 completes the bending and pressing of the ear plate, and the internal forming plate 110 limits and supports the ear plate. With the carton forming ear plate folding mechanism 10 of the present application, the external forming plate 109 and the internal forming plate 110 cooperate to complete the folding of the ear plate, and the ear plate folding operation can be smoothly performed on large carton with a size exceeding 100X100X100mm, which is more efficient, and at the same time, the qualified rate of the ear plate folding can be improved, and the phenomenon of ear plate folding failure that is easy to cause due to the poor rigidity of the large carton is avoided.

[0037] like Figure 5 As shown, in one embodiment, the external forming plate 109 includes a first ear plate folding plate 1091 and a second ear plate folding plate 1092. The first ear plate folding plate 1091 is placed horizontally, and the second ear plate folding plate 1092 is placed obliquely. The second ear plate folding plates 1092 on the left and right sides are close to each other to form an eight-shaped shape. One end of the first ear plate folding plate 1091 is fixedly connected to the connecting plate 108, and the other end is connected to the second ear plate folding plate 1092. The first ear plate folding plate 1091 and the second ear plate folding plate 1092 are integrally arranged. Specifically, a mounting plate 1093 is arranged on the side of the first ear plate folding plate 1091 away from the second ear plate folding plate 1092, and at least one strip through hole is arranged on the mounting plate 1093. The width direction of the strip through hole on the mounting plate 1093 is the same as the width direction between the left and right sides of the ear plate folding cylinder 106. The external forming plate 109 is fixedly connected to the connecting plate 108 through the strip through hole.

[0038] During the folding process of the ear plate, the second ear plate folding plate 1092 first contacts the ear plate. The inclined second ear plate folding plate 1092 is set so that the ear plate has a transition process when contacting the second ear plate folding plate 1092, and the ear plate changes from an open state to a state of folding inwards close to each other. After the second ear plate folding plate 1092 rotates the ear plate inwards and rotates in the direction where the left and right ear plates approach each other, the first ear plate folding plate 1091 contacts the ear plate to further complete the bending and pressing of the ear plate. When folding the ear plate, the external forming plate 109 adopting this structure can realize the folding of ear plates of larger sizes, avoiding the situation where the first ear plate folding plate 1091 is used to fold the large ear plate directly, because the ear plate is too large and the rigidity of the paper box is poor, and the erroneous deformation occurs. Improve the qualified rate and efficiency of ear plate folding.

[0039] The purpose of setting the mounting plate 1093 is to fix the external molding plate 109 on the connecting plate 108. As long as a strip-shaped through hole can be set on the mounting plate 1093, the length of the mounting plate 1093 is less than the length of the first ear plate folding plate 1091. The mounting plate 1093 saves materials and reduces costs while meeting the requirements. Figure 4 As shown, the line between the left and right connecting plates 108 is the width direction, the length direction is perpendicular to the width direction on the same horizontal plane, and the height direction is perpendicular to the width direction on the same vertical plane. Strip-shaped through holes are provided on the mounting plate 1093 to more flexibly adjust the distance between the left and right external mounting plates 1093, thereby increasing the applicability of the folding ear plate clamp device in terms of width.

[0040] like Fig. 9 As shown, in one embodiment, the connecting plate 108 includes a first connecting plate 1081 and a second connecting plate 1082. One end of the first connecting plate 1081 is fixedly connected to the second cylinder rod 107 on the ear plate folding cylinder 106, and the other end is fixedly connected to the second connecting plate 1082. At least one bar-shaped through hole is provided on the second connecting plate 1082, one end of the second connecting plate 1082 is fixedly connected to the first connecting plate 1081 through the bar-shaped through hole, and the other end is fixedly connected to the mounting plate 1093. The bar-shaped through hole on the second connecting plate 1082 is used to adjust the height of the second connecting plate 1082.

[0041] By designing the connecting plate 108 into two independent structures of the first connecting plate 1081 and the second connecting plate 1082, the use of the connecting plate 108 is more flexible. For example, when the size of the connecting plate 108 is not suitable, if the connecting plate 108 is not split into the first connecting plate 1081 and the second connecting plate 1082, it is necessary to replace the connecting plate 108 as a whole; if the connecting plate 108 is divided into the first connecting plate 1081 and the second connecting plate 1082, when the second connecting plate 1082 is not suitable, it is only necessary to replace the second connecting plate 1082. By providing a strip through hole on the second connecting plate 1082, the height flexibility of the folding ear plate clamp device can be increased. For example, when the height adjustment distance of the first cylinder rod 103 on the lifting cylinder 102 is not enough, the second connecting plate 1082 can be installed downward relative to the first connecting plate 1081 through the strip through hole.

[0042] like Figure 8 As shown, in one embodiment, the folding ear plate clamp device further includes a third connecting plate 111, and the third connecting plate 111 includes a horizontal plate and a vertical plate, the vertical plate is fixed to the side of the ear plate folding cylinder 106, and the horizontal plate is located at the lower side of the bottom of the ear plate folding cylinder 106. Figure 6As shown, the internal forming plate 110 includes a horizontal finishing plate 112, a fourth connecting plate 113 and a fifth connecting plate 114. The horizontal finishing plate 112, the first ear plate folding plate 1091 and the fifth connecting plate 114 are parallel to each other. One end of the fourth connecting plate 113 is connected to the fifth connecting plate 114, and the other end is connected to the horizontal finishing plate 112. At least one strip through hole is provided on the fifth connecting plate 114, and the internal forming plate 110 is fixedly connected to the horizontal plate through the strip through hole on the fifth connecting plate 114. The fourth connecting plates 113 on the internal forming plates 110 on the left and right sides are arranged close to each other.

[0043] The third connecting plate 111 is provided to more conveniently fix and connect the internal forming plate 110. The height of the vertical plate is different, and the distance between the horizontal plate and the bottom of the ear plate folding cylinder 106 is different. The specific height of the vertical plate is set as needed and is not specifically limited. Among them, the horizontal sorting plate 112, the fourth connecting plate 113 and the fifth connecting plate 114 are sheet metal parts that are integrally arranged. The strip through hole on the fifth connecting plate 114 can adjust the distance between the internal forming plates 110 on the left and right sides. For example, for a smaller carton, by adjusting the installation position of the strip through hole on the fifth connecting plate 114, the distance between the internal mounting plates 1093 on the left and right sides can be reduced; if for a larger carton, by adjusting the installation position of the strip through hole on the fifth connecting plate 114, the distance between the internal mounting plates 1093 on the left and right sides can be increased. The strip through hole is provided on the fifth connecting plate 114 to increase the flexibility of use in the width direction of the folding ear plate clamp device.

[0044] like Figure 7 As shown, in one embodiment, the internal forming plate 110 further includes an end guide plate 115 and a guide wedge block 116. The end guide plate 115 is provided on the side of the horizontal sorting plate 112 away from the fourth connecting plate 113, and the end guide plate 115 is bent toward the side close to the fourth connecting plate 113. The guide wedge block 116 is fixed to the bottom of the internal forming plate 110, and the guide wedge block 116 is used to sort out the items inside the paper box. The guide wedge block 116 is a downwardly protruding structure along the bottom of the internal forming plate 110, and the guide wedge block 116 has an inclined slope, and the slopes on the left and right sides of the guide wedge blocks 116 are away from each other, forming an inverted figure eight shape.

[0045] When the ear plates are folded, several packs of toilet paper are installed inside the paper box, and the several packs of toilet paper, i.e., the wrapping paper, are randomly distributed inside the paper box, and the heights of different positions are inconsistent. When the internal forming plate 110 is placed in the paper box, the end guide plate 115 is a guide plate close to the side wall of the paper box, and the width of the end guide plate 115 is small, and has a small bending arc. For example, the end guide plate 115 is a guide plate with a width of 3 cm, and the end guide plate 115 with a small width and a bending arc, when the internal forming plate 110 enters the inside of the paper box, the wrapping paper at the side wall of the paper box can be locally guided and arranged, so that the wrapping paper at the side wall of the paper box moves to the inside of the paper box. A guiding wedge block 116 is set, and the wrapping paper inside the paper box can be arranged in a larger area, and the fluffy incoming materials can also be flattened and arranged, so that the items inside the paper box are placed more neatly, and the heights between the parts are more uniform and consistent, and then the wrapping paper in the paper box is flattened and arranged by the lower side of the horizontal finishing plate 112. At the same time, the upper side of the horizontal sorting plate 112 plays a supporting and limiting role for the ear plate, preventing the ear plate from being unevenly stressed and easily deformed, and also preventing the ear plate from being pressed into the paper box to an excessive extent.

[0046] like Figure 3 As shown, in one embodiment, at least one linear bearing 104 is provided at the top of the bracket body 101, and at least one guide shaft 105 is provided between the top of the bracket body 101 and the ear plate folding cylinder 106, one end of the guide shaft 105 is fixed on the ear plate folding cylinder 106, and the other end passes through the linear bearing 104. The provision of the guide shaft 105 can increase the lifting stability of the folding ear plate clamp device, and prevent the folding ear plate clamp device from rotating during the lifting process. At the same time, the guide shaft 105 exerts a force on the folding ear plate clamp device, making the lifting of the folding ear plate clamp device more stable. Specifically, a fixed plate can be provided between the guide shaft 105 and the top of the ear plate folding cylinder 106, the fixed plate is fixed on the ear plate folding cylinder 106, one end of the guide shaft 105 is connected and fixed on the fixed plate, and the other end passes through the linear bearing 104.

[0047] The fixed connection mentioned in the present application can be a detachable fixed connection, such as a bolt connection. The detachable connection is convenient for assembly, maintenance and replacement of the device.

[0048] In one embodiment, the lifting cylinder 102 is an adjustable stroke lifting cylinder. By adjusting the knob of the adjustable stroke lifting cylinder, the appropriate height of the lifting cylinder 102 can be adjusted to make it more convenient to use.

[0049] like Fig.10 As shown, the paper box 20 includes a box body 21, an ear plate 22 and a box cover 23. Figure 1As shown, when the carton forming ear folding plate mechanism 10 bends and presses the ear plate 22 of the carton 20, the carton pressing mechanism 30 is required to press the carton 20. The carton pressing mechanism 30 presses the carton 20, which can prevent the relative position of the carton 20 from shifting when the ear plate is folded on the carton 20, and on the other hand, after the ear plate is folded, the ear plate clamp device is prevented from taking the entire carton 20 out when it rises.

[0050] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A paper box forming ear folding plate mechanism, characterized in that: include: Bracket body, lifting device and folding ear plate clamp device; The folding ear plate clamp device comprises an ear plate folding cylinder, and a connecting plate and an external forming plate are arranged on both sides of the ear plate folding cylinder; the ear plate folding cylinder is connected to one end of the connecting plate; the other end of the connecting plate is connected to the external forming plate; the internal forming plates are symmetrically arranged on the lower side of the bottom of the ear plate folding cylinder, the external forming plate is located on the lower side of the bottom of the ear plate folding cylinder, and the internal forming plate is located on the lower side of the external forming plate; The lifting device comprises a lifting cylinder, the lifting cylinder is fixed on the top of the bracket body, and the lifting cylinder is connected to the ear plate folding cylinder; The external forming plate comprises a first ear plate folding plate and a second ear plate folding plate, the first ear plate folding plate is placed horizontally, the second ear plate folding plate is placed obliquely, and the second ear plate folding plates on the left and right sides are close to each other to form an eight-shaped shape; one end of the first ear plate folding plate is fixedly connected to the connecting plate, and the other end is connected to the second ear plate folding plate; The folding ear plate clamp device further comprises a third connecting plate, wherein the third connecting plate comprises a horizontal plate, and the horizontal plate is located at the lower side of the bottom of the ear plate folding cylinder; The internal forming plate comprises a horizontal finishing plate, a fourth connecting plate and a fifth connecting plate, wherein the horizontal finishing plate, the first ear plate folding plate and the fifth connecting plate are parallel to each other; one end of the fourth connecting plate is connected to the fifth connecting plate, and the other end is connected to the horizontal finishing plate; at least one strip through hole is arranged on the fifth connecting plate, and the internal forming plate is fixedly connected to the horizontal plate through the strip through hole on the fifth connecting plate; the fourth connecting plates on the internal forming plates on the left and right sides are arranged close to each other; The internal forming plate also includes an end guide plate and a guide wedge block; the end guide plate is arranged on the side of the horizontal sorting plate away from the fourth connecting plate, and the end guide plate is bent toward the side close to the fourth connecting plate; the guide wedge block is fixed at the bottom of the internal forming plate, and the guide wedge block is used to sort the items inside the paper box.

2. The carton forming ear folding plate mechanism according to claim 1, characterized in that: A mounting plate is arranged on a side of the first ear plate folding plate away from the second ear plate folding plate, and at least one strip-shaped through hole is arranged on the mounting plate, and the width direction of the strip-shaped through hole on the mounting plate is the same as the width direction between the left and right sides of the ear plate folding cylinder; the external forming plate is fixedly connected to the connecting plate via the strip-shaped through hole.

3. The carton forming ear folding plate mechanism according to claim 2, characterized in that: The connecting plate includes a first connecting plate and a second connecting plate; one end of the first connecting plate is connected to the ear plate folding cylinder, and the other end is fixedly connected to the second connecting plate; at least one strip through hole is opened on the second connecting plate, one end of the second connecting plate is fixedly connected to the first connecting plate through the strip through hole, and the other end is fixedly connected to the mounting plate; the strip through hole on the second connecting plate is used to adjust the height of the second connecting plate.

4. The carton forming ear folding plate mechanism according to claim 2, characterized in that: The third connecting plate further comprises a vertical plate, and the vertical plate is fixed to a side surface of the ear plate folding cylinder.

5. The carton forming ear folding plate mechanism according to claim 1, characterized in that: The guide wedge block is a structure protruding downward along the bottom of the internal forming plate. The guide wedge block has an inclined slope. The slopes on the left and right sides of the guide wedge blocks are away from each other and form an inverted figure eight shape.

6. The carton forming ear folding plate mechanism according to claim 1, characterized in that: At least one linear bearing is arranged on the top of the bracket body, and at least one guide shaft is arranged between the top of the bracket body and the ear plate folding cylinder. One end of the guide shaft is fixed on the ear plate folding cylinder, and the other end passes through the linear bearing.

7. The carton forming ear folding plate mechanism according to any one of claims 1 to 6, characterized in that: The lifting cylinder is an adjustable stroke lifting cylinder.

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