A carton folder-gluer

Abstract

The utility model discloses a kind of carton flanging machine, including processing table, supporting table, supporting assembly, lifting table, support frame, driving assembly, lower pressing plate, glue injection assembly and bending assembly, wherein, supporting table is L type structure, supporting assembly is installed in the top of processing table, lifting table is screw-threaded in the top of supporting assembly, support frame is fixedly connected in the top side of processing table, driving assembly is installed in the top of support frame, and the output end of driving assembly is through the top of support frame and is screw-threaded with the top of lower pressing plate, glue injection assembly is installed in the inner wall of support frame, and the output end of glue injection assembly is connected with the top of lower pressing plate, bending assembly is provided with two groups, and symmetrically installed in the outer wall both sides of processing table. Thus, it solves the problem that the edge is not fully contacted and firmly bonded due to lack of precise step-by-step pressure in the background art, ensuring that the edge is tightly bonded and the structure is stable.

Description

Technical Field

[0001] This utility model relates to the field of paper box folding technology, and in particular to a paper box folding machine. Background Technology

[0002] Currently, paper box folding machines are commonly used equipment in the paper box processing industry. They are mainly used to bend and glue the edges of paper box blanks to form finished paper boxes with specific structures, meeting the needs of packaging, storage and other scenarios. They are widely used in packaging production in the food, daily chemical and electronics industries.

[0003] Existing paper box folding machines have shortcomings in the coordinated processing of folding and bonding. Specifically, after completing the folding and glue application, they often rely on a single press or a single bend to achieve the folded edge, lacking a precise step-by-step pressure mechanism for the bent edge. This results in insufficient contact between the folded edge and the glued surface, easily leading to gaps at the bonding joint and insufficient bonding strength, which in turn affects the structural stability of the finished paper box and fails to meet the requirements of high-precision processing quality. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to propose a paper box folding machine, which sets up an L-shaped support platform with a spacing adapted to the folding edge of the paper box to position the paper box. The drive component drives the lower pressure plate to press down on the folding edge for the first time, and the glue injection component injects glue at the same time. Then, the bending component push plate applies pressure a second time, and finally the lower pressure plate presses down again to complete the bonding, forming a step-by-step pressure mechanism. This solution solves the problem of insufficient contact between the folding edge and the glue injection surface caused by the lack of precise step-by-step pressure in existing equipment, ensuring that the folding edge is firmly bonded and improving the structural stability of the paper box.

[0006] To achieve the above objectives, this utility model proposes a paper box folding machine, including a processing table, a support table, a support assembly, a lifting table, a support frame, a drive assembly, a lower pressure plate, a glue injection assembly, and a bending assembly. The bottoms of two support tables are symmetrically slidably connected to the top of the processing table via guide rails. Each support table has an L-shaped structure. The support assembly is installed on the top of the processing table. The lifting table is threaded onto the top of the support assembly. The support frame is fixedly connected to one side of the top of the processing table. The drive assembly is installed on the top of the support frame, and its output end passes through the top of the support frame and is threadedly connected to the top of the lower pressure plate. The glue injection assembly is installed on the inner wall of the support frame, and its output end is connected to the top of the lower pressure plate. Two sets of bending assemblies are provided and symmetrically installed on both sides of the outer wall of the processing table.

[0007] This utility model discloses a paper box folding machine. According to the specifications of the paper box, the distance between the two L-shaped support platforms is adjusted and fixed by the fastening bolts on the outer wall of the processing table and the screw holes of the guide rail of the support platform. The paper box is positioned by the top limiting plate of the sliding support platform. The paper box is placed on the support platform and the lifting platform. The lifting platform is supported by the support sleeve plate, support arm and support spring of the support component to provide height adjustment and buffer support. The first drive device of the drive component on the support frame is started. The drive arm drives the lower pressure plate to press down, which works with the support platform to complete the initial folding. At the same time, the glue injection pump of the glue injection component delivers the glue in the storage tank to the lower pressure plate through the connecting hose. The glue is injected into the folding and bonding area from the bottom glue injection port. After the lower pressure plate is lifted, the second drive device of the bending component on both sides of the processing table drives the push plate to penetrate the inner wall of the support platform to apply pressure to the bent edge for a second time. Then the drive component drives the lower pressure plate to press down again to realize the folding and bonding. This process solves the problem of insufficient contact and weak adhesion between the folded edge and the glued surface caused by the lack of precise step-by-step pressure in the background technology through a step-by-step pressure mechanism of "initial folding and glue injection, secondary pressure by the push plate, and further pressure by the lower plate", thus ensuring tight adhesion of the folded edge and structural stability.

[0008] In addition, the paper box folding machine proposed above according to this utility model may also have the following additional technical features: Specifically, the drive assembly includes a first drive device and a drive arm, wherein the first drive device is mounted on the top of the support frame, the output end of the first drive device passes through the top of the support frame and is fixedly connected to one end of the drive arm, and the other end of the drive arm is threadedly connected to the top of the lower pressure plate.

[0009] Specifically, the glue injection assembly includes a liquid storage tank, a glue injection pump, and a connecting hose. The liquid storage tank and the glue injection pump are both installed on the inner wall of the support frame, and the input end of the glue injection pump is connected to the output port of the liquid storage tank. The connecting hose is provided between the top of the lower pressure plate and the output end of the glue injection pump, and they are connected through the connecting hose.

[0010] Specifically, the bending assembly includes a second driving device and a push plate. The second driving device is installed on the outer wall of the processing table. The output end of the second driving device passes through the outer wall of the processing table and is fixedly connected to one end of the push plate. The other end of the push plate slides through the inner wall of the support table.

[0011] Specifically, the support assembly includes a support sleeve, a support arm, and a support spring. The support sleeve is fixedly connected to the inner bottom of the processing table. One end of the support arm slides through the top of the support sleeve. The support spring is provided between one end of the support arm and the inner bottom of the support sleeve, and is connected to the support arm through the support spring.

[0012] Specifically, the bottom of the lower pressure plate has multiple symmetrical glue injection ports.

[0013] Specifically, the top of the support platform is slidably engaged with a limiting plate.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the paper box folding machine of this utility model; Figure 2 This is a schematic diagram of the lower pressure plate structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the injection port structure according to an embodiment of the present invention; Figure 4 This is one embodiment of the present utility model. Figure 2 Enlarged structural diagram at point A in the middle.

[0016] As shown in the figure: 1. Processing table; 2. Support table; 21. Limiting plate; 3. Supporting components; 31. Supporting sleeve; 32. Supporting arm; 33. Supporting spring; 4. Lifting platform; 5. Support frame; 6. Drive assembly; 61. First drive device; 62. Drive arm; 7. Lower pressure plate; 71. Glue injection port; 8. Glue dispensing assembly; 81. Liquid reservoir; 82. Glue dispensing pump; 83. Connecting hose; 9. Bending assembly; 91. Second drive device; 92. Push plate. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0018] The paper box folding machine of this utility model embodiment will be described below with reference to the accompanying drawings.

[0019] like Figures 1-4 As shown, the paper box folding machine of this utility model embodiment may include a processing table 1, a support table 2, a support assembly 3, a lifting table 4, a support frame 5, a drive assembly 6, a lower pressure plate 7, an injection assembly 8, and a bending assembly 9.

[0020] The bottoms of the two support platforms 2 are symmetrically slidably connected to the top of the processing table 1 via guide rails. The support platform 2 has an L-shaped structure. The support component 3 is installed on the top of the processing table 1, and the lifting platform 4 is threaded onto the top of the support component 3.

[0021] It should be noted that the L-shaped support platform 2 described in this embodiment can form a close-fitting support for two adjacent sides of the cardboard box. With the sliding engagement of the guide rail and the processing table 1, the distance between the two support platforms 2 can be flexibly adjusted to adapt to the folding requirements of cardboard boxes of different specifications. The threaded connection between the lifting platform 4 and the support component 3 makes it easy to adjust the lifting height according to the thickness of the cardboard box. At the same time, the support component 3 can provide buffer support for the lifting platform 4 to avoid hard contact that could cause deformation of the cardboard box and improve the overall support stability.

[0022] It should be understood that fastening bolts are threaded on the outer wall of the processing table 1, and multiple threaded holes matching the fastening bolts are equally spaced on the guide rail of the support table 2.

[0023] The support frame 5 is fixedly connected to the top side of the processing table 1, the drive assembly 6 is installed on the top of the support frame 5, and the output end of the drive assembly 6 passes through the top of the support frame 5 and is threadedly connected to the top of the lower pressure plate 7.

[0024] It should be noted that the support frame 5 described in this embodiment ensures the stability of the overall structure through its fixed connection with the processing table 1, providing a stable installation foundation for the drive component 6. The threaded connection between the output end of the drive component 6 and the lower pressure plate 7 not only facilitates the disassembly and replacement of the lower pressure plate 7, but also ensures that the lower pressure plate 7 remains horizontal when it is raised and lowered by the drive component 6, avoiding edge deviation due to uneven force and improving edge accuracy.

[0025] The glue injection assembly 8 is installed on the inner wall of the support frame 5, and the output end of the glue injection assembly 8 is connected to the top of the lower pressure plate 7.

[0026] It should be noted that the glue injection component 8 described in this embodiment is installed on the inner wall of the support frame 5, which saves the overall space of the equipment and shortens the connection path between the glue injection component 8 and the lower pressure plate 7, reducing the residue and loss during the glue delivery process. At the same time, the direct connection between the glue injection component 8 and the lower pressure plate 7 can ensure that the glue injection action is synchronized with the pressing action of the lower pressure plate 7, ensuring that the glue is accurately applied to the folded edge bonding area, improving the glue injection efficiency and accuracy.

[0027] Two sets of bending components 9 are provided and are symmetrically installed on both sides of the outer wall of the processing table 1.

[0028] It should be noted that the two sets of bending components 9 described in this embodiment are symmetrically installed on both sides of the outer wall of the processing table 1, which can apply a uniform force to the folded edges on both sides of the cardboard box, avoiding the cardboard box from tilting due to force on one side. The design of installing them on the outer wall of the processing table 1 not only facilitates the maintenance and repair of the bending components 9, but also does not occupy the working space on the top of the processing table 1, ensuring that they do not interfere with each other when working together with components such as the support table 2 and the lower pressure plate 7, thereby improving the coordination and consistency of the folding action.

[0029] Specifically, according to the specifications of the cardboard box, the distance between the two L-shaped support platforms 2 is adjusted and fixed by cooperating with the fastening bolts on the outer wall of the processing table 1 and the screw holes on the guide rail of the support platform 2. The limiting plate 21 on the top of the sliding support platform 2 positions the cardboard box and places it on the support platform 2 and the lifting platform 4. The lifting platform 4 adjusts its height and obtains buffer support through the threaded connection of the support component 3. The drive component 6 on the support frame 5 is activated, which drives the lower pressure plate 7 to move downward. The initial folding is completed under the limit of the L-shaped support platform 2. At the same time, the glue injection component 8 injects glue from the glue injection port 71 into the folded edge bonding area through the connection with the lower pressure plate 7. After the lower pressure plate 7 is lifted, the bending components 9 on both sides of the processing table 1 drive the push plate 92 to apply pressure to the bent edge a second time. Then the drive component 6 drives the lower pressure plate 7 to press down again, so that the folded edge can fully contact and firmly bond with the glue injection surface under the step pressure. This process solves the problem in the background technology that the existing equipment lacks precise step-by-step pressure, resulting in insufficient contact and weak adhesion between the folded edge and the glue injection surface. It ensures the tightness and structural stability of the paper box folded edge bonding by using a step-by-step pressure mechanism of "initial pressure folding, simultaneous glue injection, secondary pressure from push plate 92 and pressure from lower plate 7".

[0030] In one embodiment of this utility model, such as Figures 1-4 As shown, the drive assembly 6 includes a first drive device 61 and a drive arm 62. The first drive device 61 is mounted on the top of the support frame 5. The output end of the first drive device 61 passes through the top of the support frame 5 and is fixedly connected to one end of the drive arm 62. The other end of the drive arm 62 is threadedly connected to the top of the lower pressure plate 7.

[0031] It should be noted that the first drive device 61 described in this embodiment is installed on the top of the support frame 5. It can provide stable support for the drive action with the help of the stable structure of the support frame 5, and avoid shaking during the drive process. One end of the drive arm 62 is fixedly connected to the output end of the first drive device 61 to ensure the directness and stability of power transmission. The other end is threadedly connected to the lower pressure plate 7, which not only facilitates the quick disassembly and replacement of the lower pressure plate 7, but also ensures the levelness of the lower pressure plate 7 after installation through the threaded connection, preventing the lower pressure plate 7 from tilting due to loose connection. The first drive device 61 is a cylinder.

[0032] Specifically, when the cardboard box needs to be pressed down for folding or gluing, the first drive device 61 starts and outputs power, driving the drive arm 62 to move up and down. The drive arm 62 then drives the lower pressure plate 7 to move up and down synchronously. In the initial folding stage, the lower pressure plate 7 is precisely pressed down under the drive of the drive arm 62, and works with the L-shaped support platform 2 to complete the folding of the cardboard box. In the gluing stage, the lower pressure plate 7 is pressed down again to achieve folding and gluing. This structure, through the coordinated action of the first drive device 61 and the drive arm 62, precisely controls the timing and magnitude of the lifting and lowering of the lower pressure plate 7, solving the problem in the background technology of insufficient contact between the folding edge and the glue injection surface and weak adhesion due to the lack of precise pressure control, and ensuring the precise realization of the two pressing actions in the step-by-step pressure mechanism.

[0033] In one embodiment of this utility model, such as Figures 1-4 As shown, the glue injection assembly 8 includes a liquid storage tank 81, a glue injection pump 82, and a connecting hose 83. The liquid storage tank 81 and the glue injection pump 82 are both installed on the inner wall of the support frame 5, and the input end of the glue injection pump 82 is connected to the output port of the liquid storage tank 81. A connecting hose 83 is provided between the top of the lower pressure plate 7 and the output end of the glue injection pump 82, and they are connected through the connecting hose 83.

[0034] It should be noted that the liquid storage tank 81 and the glue pump 82 described in this embodiment are installed on the inner wall of the support frame 5, which makes full use of the internal space of the support frame 5, avoids the components being exposed and occupying the working space of the processing table 1, and shortens the connection path between the two, reducing glue delivery loss. The setting of the connecting hose 83 is adapted to the lifting and lowering movement of the lower pressure plate 7, and can flexibly extend and retract with the lower pressure plate 7, avoiding the restriction of the movement of the lower pressure plate 7 due to rigid connection, while ensuring the continuity of glue delivery.

[0035] Specifically, the liquid storage tank 81 is used to store the adhesive required for folding. When the lower pressure plate 7 is folded downwards for the first time under the drive component 6, the glue injection pump 82 is started, which draws the adhesive from the liquid storage tank 81 and delivers it to the lower pressure plate 7 through the connecting hose 83. Then, the adhesive is injected into the folded edge of the cardboard box through the glue injection port 71 at the bottom of the lower pressure plate 7. This structure controls the amount of adhesive output through the glue injection pump 82. Combined with the linkage between the connecting hose 83 and the lower pressure plate 7, the glue injection action and the folding action of the lower pressure plate 7 are synchronized. This solves the problem of asynchronous glue injection and folding and inaccurate glue control in the background technology, which leads to weak folding adhesion. It ensures that the adhesive is accurately applied to the bonding surface during folding, laying the foundation for subsequent bonding.

[0036] In one embodiment of this utility model, such as Figures 1-4 As shown, the bending assembly 9 includes a second driving device 91 and a push plate 92. The second driving device 91 is installed on the outer wall of the processing table 1. The output end of the second driving device 91 passes through the outer wall of the processing table 1 and is fixedly connected to one end of the push plate 92. The other end of the push plate 92 slides through the inner wall of the support table 2.

[0037] It should be noted that the second drive device 91 described in this embodiment is installed on the outer wall of the processing table 1, which facilitates the maintenance and repair of the components in the later stage, and does not occupy the cardboard processing space on the top of the processing table 1. The design of the push plate 92 sliding through the inner wall of the support platform 2 allows the push plate 92 to directly act on the bending edge of the cardboard box on the support platform 2, avoiding the force loss caused by the intermediate transmission link, while ensuring the accuracy of the movement direction of the push plate 92. The second drive device 91 is a cylinder.

[0038] Specifically, after the lower pressure plate 7 completes the initial folding and gluing and is lifted, the second drive device 91 is activated, driving the push plate 92 to move inward to the processing table 1. After the push plate 92 slides through the inner wall of the support table 2, it applies inward pressure to the bent side of the carton, so that the bent edge and the gluing surface are initially bonded. This structure, through the secondary pressure of the push plate 92, forms an intermediate transition bonding step after the folding and gluing, which solves the problem in the background technology that the folding is only pressed down once or simply bent, resulting in insufficient contact with the gluing surface. It also prepares for the lower pressure plate 7 to press down again for bonding, improving the tightness of the bonding between the folding edge and the gluing surface.

[0039] In one embodiment of this utility model, such as Figures 1-4 As shown, the support assembly 3 includes a support sleeve 31, a support arm 32, and a support spring 33. The support sleeve 31 is fixedly connected to the inner bottom of the processing table 1. One end of the support arm 32 slides through the top of the support sleeve 31. A support spring 33 is provided between one end of the support arm 32 and the inner bottom of the support sleeve 31, and they are connected by the support spring 33.

[0040] It should be noted that the support sleeve 31 described in this embodiment is fixed to the bottom of the inner side of the processing table 1, providing a stable mounting base for the support arm 32 and the support spring 33. The support arm 32 slides through the top of the support sleeve 31 and can slide up and down flexibly according to the thickness of the paper box or the pressure of the lower pressure plate 7. With the elastic support of the support spring 33, it can form a buffer effect on the lifting platform 4 and avoid the paper box from deforming due to hard contact when the lower pressure plate 7 is pressed down.

[0041] Specifically, when the cardboard box is placed on the lifting platform 4, the lifting platform 4 transmits pressure to the support spring 33 through the support arm 32. The support spring 33 adapts to the weight of the cardboard box, so that the height of the lifting platform 4 matches the support platform 2. When the pressure plate 7 is pressed down, the pressure is transmitted through the cardboard box to the lifting platform 4 and the support arm 32. The support spring 33 is further compressed to buffer the pressure of the pressure plate 7 and prevent the cardboard box from deforming due to excessive force. This structure solves the problem of cardboard box deformation caused by hard contact of the support structure in the background technology, which affects the folding accuracy and bonding effect, by elastic buffering of the support spring 33. It ensures that the cardboard box maintains structural integrity during folding and bonding, and improves the processing quality.

[0042] In one embodiment of this utility model, such as Figures 1-4 As shown, the bottom of the lower pressure plate 7 has multiple glue injection ports 71 symmetrically opened.

[0043] It should be noted that the multiple glue inlets 71 described in this embodiment are symmetrically distributed at the bottom of the lower pressure plate 7, which allows the glue to be output evenly from the bottom of the lower pressure plate 7, covering the entire bonding surface of the paper box fold, avoiding glue concentration or local glue shortage due to a single glue inlet 71, and ensuring that the amount of glue in each part of the fold is consistent.

[0044] In one embodiment of this utility model, such as Figures 1-4 As shown, the top of the support platform 2 is slidably engaged with the limiting plate 21.

[0045] It should be noted that the limiting plate 21 described in this embodiment is slidably engaged with the top of the support platform 2, and its position can be flexibly adjusted according to different sizes of paper boxes to limit and fix the side of the paper box, preventing the paper box from shifting during folding, gluing and pressure application, and ensuring the accuracy of the folding position.

[0046] In summary, the cardboard box folding machine of this utility model adjusts and fixes the distance between the two L-shaped support platforms 2 according to the specifications of the cardboard box by matching the fastening bolts on the outer wall of the processing table 1 with the guide rail screw holes of the support platform 2. The top limiting plate 21 of the sliding support platform 2 positions the cardboard box, and the cardboard box is placed on the support platform 2 and the lifting platform 4. The lifting platform 4 is provided with height adjustment and buffer support by the support sleeve plate 31, support arm 32 and support spring 33 of the support assembly 3. The first driving device 61 of the driving assembly 6 on the support frame 5 is activated. The drive arm 62 drives the lower pressure plate 7 to press down, cooperating with the support platform 2 to complete the initial folding. At the same time, the glue injection pump 82 of the glue injection assembly 8 delivers glue from the storage tank 81 to the lower pressure plate 7 through the connecting hose 83, injecting it into the folded edge bonding area from the bottom glue injection port 71. After the lower pressure plate 7 is lifted, the second drive device 91 of the bending assembly 9 on both sides of the processing table 1 drives the push plate 92 to penetrate the inner wall of the support platform 2 to apply secondary pressure to the bent edge. Subsequently, the drive assembly 6 drives the lower pressure plate 7 to press down again, realizing the folded edge bonding. This process, through the step-by-step pressure mechanism of "initial folding glue injection, secondary pressure from the push plate 92, and secondary pressure from the lower pressure plate 7", solves the problem of insufficient contact and weak bonding between the folded edge and the glue injection surface caused by the lack of precise step-by-step pressure in the background technology, ensuring tight bonding and structural stability of the folded edge.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A paper box folding machine, characterized in that, It includes a processing table (1), a support table (2), a support assembly (3), a lifting platform (4), a support frame (5), a drive assembly (6), a lower pressure plate (7), a glue injection assembly (8), and a bending assembly (9), among which, The bottoms of the two support platforms (2) are symmetrically slidably connected to the top of the processing table (1) via guide rails. The support platform (2) has an L-shaped structure. The support assembly (3) is installed on the top of the processing table (1). The lifting platform (4) is threadedly installed on the top of the support assembly (3). The support frame (5) is fixedly connected to the top side of the processing table (1), the drive assembly (6) is installed on the top of the support frame (5), and the output end of the drive assembly (6) passes through the top of the support frame (5) and is threadedly connected to the top of the lower pressure plate (7). The glue injection assembly (8) is installed on the inner wall of the support frame (5), and the output end of the glue injection assembly (8) is connected to the top of the lower pressure plate (7); Two sets of bending components (9) are provided and are symmetrically installed on both sides of the outer wall of the processing table (1).

2. The paper box folding machine according to claim 1, characterized in that, The drive assembly (6) includes a first drive device (61) and a drive arm (62), wherein, The first drive device (61) is installed on the top of the support frame (5). The output end of the first drive device (61) passes through the top of the support frame (5) and is fixedly connected to one end of the drive arm (62). The other end of the drive arm (62) is threadedly connected to the top of the lower pressure plate (7).

3. The paper box folding machine according to claim 1, characterized in that, The dispensing assembly (8) includes a liquid reservoir (81), a dispensing pump (82), and a connecting hose (83), wherein, The liquid storage tank (81) and the glue injection pump (82) are both installed on the inner wall of the support frame (5), and the input end of the glue injection pump (82) is connected to the output port of the liquid storage tank (81). The top of the lower pressure plate (7) and the output end of the glue injection pump (82) are both provided with the connecting hose (83), and are connected through the connecting hose (83).

4. The paper box folding machine according to claim 1, characterized in that, The bending assembly (9) includes a second drive device (91) and a push plate (92), wherein, The second drive device (91) is installed on the outer wall of the processing table (1). The output end of the second drive device (91) passes through the outer wall of the processing table (1) and is fixedly connected to one end of the push plate (92). The other end of the push plate (92) slides through the inner wall of the support table (2).

5. The paper box folding machine according to claim 1, characterized in that, The supporting assembly (3) includes a supporting sleeve (31), a supporting arm (32), and a supporting spring (33), wherein, The support sleeve (31) is fixedly connected to the bottom inner side of the processing table (1). One end of the support arm (32) slides through the top of the support sleeve (31). A support spring (33) is provided between one end of the support arm (32) and the bottom inner side of the support sleeve (31), and is connected through the support spring (33).

6. The cardboard box folding machine according to claim 1, characterized in that, The bottom of the lower pressure plate (7) is symmetrically provided with multiple glue injection ports (71).

7. The paper box folding machine according to claim 1, characterized in that, The top of the support platform (2) is slidably engaged with a limiting plate (21).

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