Barrel box forming machine

Abstract

The utility model discloses a barrel box forming machine. The barrel box forming machine comprises a first station, a second station, a third station, a fourth station, a fifth station, a sixth station and at least one inner mold moving among the six stations. The first station is used for feeding a bottom cover onto an inner mold; the second station is used for feeding a combined body of the surface paper and the grey board to the lower part of the inner mold and aligning the combined body with the inner mold; the third station is used for pressing down the assembly to form the barrel body and folding the c15 edge of the facial tissue; the fourth station is used for folding the c14 edge, the c16 edge and the c18 edge of the surface paper; according to the utility model, the edge folding sequence of each edge of the barrel bottom in the barrel box is optimized, the double-layer space station layout is combined, the space is fully utilized, the occupied area of equipment is reduced, the integration level is high, the mechanical efficiency of the mold and the expansion of the box type are considered, the waiting and avoiding time of a forming mechanism in a single station is shortened, and the production efficiency is improved. And the mechanical action efficiency of the equipment is improved, so that the overall teaching efficiency is improved.

Description

Technical Field

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

[0002] The barrel-shaped box forming process involves assembling a combination of face paper and grey board into a barrel shape. This process involves multiple steps, and barrel-shaped box forming equipment typically has four workstations on the same working surface to perform each process sequentially. In the process of assembling the grey board into a barrel shape, the grey board is first pressed down by a mold, and then the active forming mechanism on both sides of the workstation folds the grey board onto the mold for forming. After the barrel body is formed, the remaining edge of the face paper corresponding to the bottom part of the barrel needs to be folded at the same workstation. This not only results in a large number of mechanical actions integrated in a single workstation, affecting the overall processing efficiency, but also leads to low mechanical action utilization efficiency of the equipment. The mechanical structures performing different functions need to avoid each other, which also results in low space utilization and large floor space. Utility Model Content

[0003] The main purpose of this utility model is to provide a barrel and box forming machine, which aims to solve existing technical problems.

[0004] To achieve the above objectives, this utility model provides a barrel and box forming machine, including a first station, a second station, a third station, a fourth station, a fifth station, a sixth station, and at least one inner mold that flows between the six stations, wherein the first station, the second station, and the sixth station are located on the first layer, and the third station, the fourth station, and the fifth station are located on the second layer.

[0005] The first station is used to load the bottom cover onto the inner mold;

[0006] The second station is used to feed the combination of face paper and gray board to the bottom of the inner mold and align it with the inner mold;

[0007] The third station is used to press down the assembly to form the barrel body and to fold the c15 edge of the paper.

[0008] The fourth station is used to fold the c14, c16, and c18 edges of the face paper.

[0009] The sixth station is used to remove the formed barrel from the inner mold.

[0010] Furthermore, the fourth station is equipped with a first folding mechanism for folding the c14 edge of the face paper and a second folding mechanism for folding the c16 and c18 edges of the face paper.

[0011] Furthermore, the fourth station is also equipped with a third folding mechanism for folding the c17 edge of the face paper.

[0012] Furthermore, the fifth station is also equipped with a third folding mechanism for folding the c17 edge of the face paper.

[0013] Furthermore, it also includes a seventh station, which is used to grab the assembly of incoming materials, correct its deviation, and align it for descent. During the descent, the c11, c12, and c13 edges of the face paper are pre-folded to a vertical position and then folded onto the gray board.

[0014] Furthermore, the seventh workstation is equipped with an industrial robot for gripping the incoming assembly and a fourth folding mechanism for folding the c11, c12, and c13 edges of the paper.

[0015] Furthermore, it also includes a conveying mechanism for conveying the assembly of the gray board and face paper after being folded by the fourth folding mechanism to the second work station.

[0016] Furthermore, the third workstation is equipped with,

[0017] The support section is used to support the b3 surface of the gray board when the assembly moves down to form the shape;

[0018] The side plates are provided in two opposite positions and are used to limit and shape the b2 and b4 surfaces of the gray board when the inner mold presses the assembly into the lower space.

[0019] The first barrel edge-cutting assembly is used to bend the b1 side of the gray board into shape;

[0020] The second barrel edge-cutting assembly is used to shape the c1 side of the face paper onto the gray board.

[0021] Furthermore, the third workstation is also equipped with a drive mechanism for driving any one of the side plates to descend and avoid the rotating inner mold.

[0022] A barrel-shaped box forming machine includes a first station, a second station, a third station, a fourth station, a fifth station, a sixth station, and at least one inner mold that flows between the six stations, wherein the first station, the second station, and the sixth station are located on the first layer, and the third station, the fourth station, and the fifth station are located on the second layer.

[0023] The first station is used to load the bottom cover onto the inner mold;

[0024] The second station is used to feed the combination of face paper and gray board to the bottom of the inner mold and align it with the inner mold;

[0025] The third station is used to press down the assembly to form the barrel body of the barrel box;

[0026] The fourth station is used to fold the c14, c16, c17, and c18 edges of the face paper.

[0027] The fifth station is used to remove the formed barrel from the inner mold.

[0028] The beneficial effects of this utility model are reflected in:

[0029] 1. The folding sequence of the barrel body forming and the remaining bottom paper of the barrel box has been optimized, and the folding sequence of the bottom sealing paper C17 of the barrel box is placed in a later step. This not only ensures the folding requirements of the bottom paper of traditional symmetrical boxes, but also meets the folding requirements of the bottom paper of asymmetrical boxes, making it more compatible with a wider range of box types.

[0030] 2. By utilizing a double-layer spatial layout, the workstations for forming the barrel body and folding the bottom paper are separated, increasing the number of workstations, reducing the processing time of a single workstation, and improving the overall processing efficiency of the equipment; the mechanical structure integrated on the single workstation plane is adjusted to be stacked in the upper and lower spaces, reducing the floor space occupied.

[0031] 3. The covering action during the barrel forming process effectively utilizes the mold's descent stroke, reducing the time for mechanical avoidance in adjacent action sequences, and further improving the utilization efficiency of the mechanical structure's stroke. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the barrel and box forming machine (lower space demolding) of this utility model;

[0033] Figure 2 This is a schematic diagram of the first embodiment of the c17 edge forming structure of the face paper (symmetrical barrel bottom face paper) of this utility model;

[0034] Figure 3 This is a schematic diagram of the second embodiment of the c17 edge forming structure of the face paper (symmetrical barrel bottom face paper) of this utility model;

[0035] Figure 4 This is a schematic diagram of the c17 edge forming of the face paper (asymmetrical barrel bottom face paper) of this utility model;

[0036] Figure 5 This is a schematic diagram of the barrel body molding structure of the barrel box of this utility model;

[0037] Figure 6 This is a top view of the structure at the seventh workstation of this utility model;

[0038] Figure 7 This is a three-dimensional structural diagram of the seventh station of this utility model;

[0039] Figure 8 This is a schematic diagram of the barrel and box forming machine (upper space demolding) of this utility model;

[0040] Explanation of reference numerals in the attached figures:

[0041] A. Bottom cover; B. Gray board; C. Facing paper;

[0042] 100. First station; 200. Second station; 300. Third station; 301. Supporting part; 302. Side plate; 303. First barrel edge trimming assembly; 304. Second barrel edge trimming assembly; 305. Platform; 306. Drive mechanism; 400. Fourth station; 401. First folding mechanism; 402. Second folding mechanism; 403. Third folding mechanism; 500. Fifth station; 600. Sixth station; 700. Seventh station; 701. Industrial robot; 702. Fourth folding mechanism; 800. Inner mold; 900. Handling mechanism. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0044] Example 1: In this example, a symmetrical box bottom is used as an example. The C15, C16, C17, and C18 sides are symmetrical in shape at the bottom of the box after molding. The middle part of the bottom gray board is exposed and requires an additional sheet of paper of equal area to be applied to seal the four folded edges and the exposed part.

[0045] Please see Figure 1 This utility model provides a barrel and box forming machine, including a first station 100, a second station 200, a third station 300, a fourth station 400, a fifth station 500, a sixth station 600, and at least one inner mold 800 that flows between the six stations. The first station 100, the second station 200, and the sixth station 600 are located in the first layer, and the third station 300, the fourth station 400, and the fifth station 500 are located in the second layer.

[0046] It should be noted that the layer numbers for the first and second layers are represented by... Figure 1 The labels shown are arranged from top to bottom, with the first layer at... Figure 1 The upper layer shown, the second layer is... Figure 1 The lower layer is shown.

[0047] The first station 100 is used to load the bottom cover A onto the inner mold 800;

[0048] The second station 200 is used to feed the assembly of face paper C and gray board B to the bottom of the inner mold 800 and align it with the inner mold 800;

[0049] The third station 300 is used to press down the assembly to form the barrel body and fold the edge of the paper Cc15.

[0050] The fourth station 400 is used to fold the c14, c16 and c18 edges of the face paper C;

[0051] The sixth station 600 is used to remove the formed barrel from the inner mold 800.

[0052] In this embodiment, the bottom cover A is fed from the first station 100 onto the inner mold 800. The inner mold 800 is then transferred to the second station 200. The assembly of the face paper C and the gray board B is pre-moved to the second station 200 to wait. The inner mold 800 moves down to contact the assembly and presses it down from the second station 200 of the first layer to the third station 300 of the second layer. At the third station 300, the initial forming of the barrel and the c15 edge folding of the face paper C are completed. The inner mold 800 continues to transfer the barrel to the fourth station 400 in the lower space. At the fourth station 400, the c14 edge (barrel opening) of the face paper C and the c16 and c18 edges of the bottom face paper C are folded to achieve the complete forming of the barrel. Finally, the inner mold 800 drives the formed barrel to be output outward at the sixth station 600.

[0053] Specifically, during the assembly loading, edges C11, C12, and C13 of the face paper C are already folded. As the barrel box begins to take shape, edge C15 of the bottom face paper C is folded at the third station 300, and edges C14 of the top face paper C and edges C16 and C18 of the bottom face paper C are folded at the fourth station 400. By splitting the folding action of the face paper C into multiple stations and optimizing the folding sequence of the face paper C, the folding efficiency of the face paper C is improved. At the same time, placing the folding sequence of edge C17 in a later step ensures that the folding requirements of traditional symmetrical bottom face papers are met, while also satisfying the folding requirements of asymmetrical bottom face papers, thus compatibility with a wider range of box types.

[0054] Specifically, by decomposing the barrel forming and paper folding actions into multiple steps at the second station 200, the third station 300, and the fourth station 400, the processing time of a single station is reduced, and the overall processing efficiency of the equipment is improved. At the same time, the second station 200, the third station 300, and the fourth station 400 are arranged in a double-layer space layout. The second station 200 is responsible for supporting the assembly. The inner mold 800 lowers and presses the assembly to the third station 300 in the lower space. At the third station 300, the barrel box is formed by a forming structure (specifically, the published patent: CN117067681A, which discloses a forming mechanism that can be applied to this application). Finally, at the fourth station 400 in the lower space, the folding mechanism is used to fold the barrel opening and the paper C at the bottom of the barrel. This avoids the problems of complex mechanical mechanisms, large footprint, and low mechanical efficiency integrated on a single station plane in traditional equipment.

[0055] Specifically, after the assembly is loaded at the second station 200, it is pressed down by the inner mold 800 to the lower third station 300. The limiting structure at the third station 300 allows the b2 and b4 surfaces of the assembly to adhere to the side wall of the mold. This makes the covering action during the barrel forming process effectively utilize the downward stroke of the inner mold 800, reducing the time for mechanical avoidance in the sequence of adjacent actions in traditional equipment, and further improving the utilization efficiency of the mechanical structure stroke.

[0056] Specifically, since the barrel lid is initially fed on the first layer of the double-layer station, after the barrel box is formed on the second layer of the fifth station 500, the formed barrel box is driven back to the first layer for discharge by the inner mold 800. This not only ensures that the combination of bottom cover A, gray board B and face paper C and the formed barrel box are all on the same layer, resulting in better uniformity and a more reasonable and aesthetically pleasing overall equipment layout, but also allows the barrel box to be output at the sixth station 600, enabling the inner mold 800 to directly transfer to the first station 100 on the first layer, connecting with the subsequent bottom cover A feeding, thus improving compatibility.

[0057] In one embodiment, please refer to Figure 2 The fourth station 400 is provided with a first folding mechanism 401 for folding the c14 edge of the face paper C and a second folding mechanism 402 for folding the c16 and c18 edges of the face paper C.

[0058] Specifically, the first folding mechanism 401 and the second folding mechanism 402 can be brush rollers or shovels, etc.

[0059] In one embodiment, please refer to Figure 2 The fourth station 400 is also equipped with a third folding mechanism 403 for folding the edge of the paper Cc17.

[0060] Specifically, the third folding mechanism 403 can be a brush roller, a shovel, or a plate with a brush attached, etc.

[0061] In one embodiment, please refer to Figure 2 The fourth station 400 is the third folding mechanism 403 used to fold the c17 edge of the face paper C.

[0062] In this embodiment, the c17 edge of the face paper C is folded by the third folding mechanism 403, and the folding operation of the bottom face paper of the bucket is completed in sequence.

[0063] Specifically, the third folding mechanism 403 can be a brush roller, a shovel, or a plate with a brush attached, etc.

[0064] In one embodiment, please refer to Figure 6 and Figure 7 It also includes a seventh station 700, which is used to grab the assembly of incoming materials, correct its deviation in the air, and then align and descend. During the descent, the c11, c12, and c13 edges of the face paper C are pre-folded to a vertical position and then folded onto the gray board B.

[0065] Specifically, the seventh station 700 is equipped with an industrial robot 701 for gripping the incoming material assembly and a fourth folding mechanism 702 for folding the c11, c12 and c13 edges of the paper C.

[0066] In this embodiment, the gray board B and the face paper C that make up the container have been glued together in the previous process and are fed in the form of an assembly. The subsequent process requires folding the protruding part of the face paper C. The assembly is picked up by an industrial robot 701. During the process, the posture of the assembly is detected by a vision recognition camera and the industrial robot 701 is coordinated to correct the angle so that the assembly is aligned with the fourth folding mechanism 702. Then, the industrial robot 701 moves the assembly down. During the descent, the c11, c12, and c13 edges of the face paper will be blocked by the fourth folding mechanism 702 and pre-folded to a vertical state. After the assembly is completely in place, the c11, c12, and c13 edges of the face paper are directly folded horizontally by the fourth folding mechanism 702, so that the c11, c12, and c13 edges of the face paper are folded onto the gray board B.

[0067] The advantages of this embodiment compared to traditional folding mechanisms are that traditional folding mechanisms exist independently of the barrel and box forming machine, have low overall integration, occupy a large area, and generally involve multiple steps such as picking, coarse positioning, and fine positioning, which is time-consuming and results in low processing efficiency. In contrast, this application uses an industrial robot 701 with visual recognition to correct the deviation of the assembly during the picking process. Then, during the placement of the assembly, the c11, c12, and c13 edges of the face paper are pre-folded to a vertical state. Finally, the fourth folding mechanism 702 directly pushes the c11, c12, and c13 edges of the face paper to complete the folding. The entire folding process can be performed at a single station and is integrated into the barrel and box forming machine, resulting in higher integration, more accurate positioning, simpler structure, and significantly improved processing efficiency.

[0068] Specifically, the fourth folding mechanism 702 can be a brush roller, a shovel, or a plate with brushes attached, etc.

[0069] In one embodiment, please refer to Figure 6 It also includes a conveying mechanism 900, which is used to convey the combination of gray board B and face paper C after being folded by the fourth folding mechanism 702 to the second station 200.

[0070] In this embodiment, the positioned assembly is fed to the second station 200 by the conveying mechanism 900, and the folding process of the c11, c12 and c13 edges of the face paper C is decomposed. By using more stations, the efficiency of the action of each step is improved, thereby improving the overall processing efficiency.

[0071] Specifically, the handling mechanism 900 can move the positioned assembly by swinging or linear reciprocating motion.

[0072] In one embodiment, please refer to Figure 5 The third work station 300 is provided with a support part 301, which is used to support the b3 surface of the gray board B when the assembly moves down to form the shape.

[0073] Side plates 302 are provided in two opposite positions and are used to limit and form the b2 and b4 surfaces of gray plate B when the inner mold 800 presses the assembly to the lower space.

[0074] The first barrel edge-cutting assembly 303 is used to bend and shape the b1 side of the gray board B.

[0075] The second barrel edge-cutting assembly 304 is used to form the c1 side of the face paper C onto the gray board B.

[0076] In this embodiment, the positioned assembly is transferred to the second station 200 and supported by the platform 305 at the second station 200. The inner mold 800 moves down to contact the b3 surface of the gray board B and presses the assembly down to the lower third station 300. The assembly is supported by the support part 301. During the process of moving down to the third station 300, the assembly is limited by the two side plates 302, so that the b2 and b4 surfaces of the gray board B are folded upward to form the shape. Then, the b1 surface of the gray board B is bent into shape by the first barrel edge shaving assembly 303. Finally, the c1 surface of the face paper C is formed onto the b1 surface of the gray board B to cover it, realizing the initial forming of the barrel box.

[0077] In one embodiment, please refer to Figure 5 The third station 300 is also equipped with a drive mechanism 306, which is used to drive any one of the side plates 302 to descend and avoid the inner mold 800 that is flowing.

[0078] In this embodiment, the drive mechanism 306 drives any one of the side plates 302 to actively descend, avoiding the inner mold 800 that flows from the third station 300 to the fourth station 400, thus preventing the side plate 302 from blocking the normal flow of the inner mold 800 due to the forming of the barrel body.

[0079] Specifically, the drive mechanism 306 can be a cylinder or a linear motor.

[0080] Example 2: Please refer to Figure 3 The fifth station 500 is also equipped with a third folding mechanism 403 for folding the c17 edge of the face paper C.

[0081] This embodiment is configured in such a way that another opportunity is provided to fold the c17 edge of the face paper C.

[0082] The remaining structures in this embodiment are the same as in Embodiment 1.

[0083] Example 3: Please refer to Figure 4 This embodiment is applicable to the folding requirements of the bottom face paper of an asymmetrical box, wherein the area of ​​the c17 edge of the face paper C is larger than the other remaining edges.

[0084] The incoming box state in this embodiment is the same as in the previous embodiment. It can be understood that when the box enters the barrel forming machine provided by this utility model and moves to the fourth station 400 according to the processing sequence, the c15, c16, and c18 edges of the face paper C have been folded. Then, the third folding mechanism 403 set in the fourth station 400 folds the c17 edge to cover the folded three edges and wrap the bottom of the barrel box.

[0085] The remaining structures in this embodiment are the same as in Embodiment 1.

[0086] Example 4: Please refer to Figure 8This application also provides a barrel and box forming machine, including a first station 100, a second station 200, a third station 300, a fourth station 400, a fifth station 500, a sixth station 600, and at least one inner mold 800 that flows between the six stations, wherein the first station 100, the second station 200, and the sixth station 600 are located on the first layer, and the third station 300, the fourth station 400, and the fifth station 500 are located on the second layer;

[0087] The first station 100 is used to load the bottom cover A onto the inner mold 800;

[0088] The second station 200 is used to feed the assembly of face paper C and gray board B to the bottom of the inner mold 800 and align it with the inner mold 800;

[0089] The third station 300 is used to press down the assembly to form the barrel body of the barrel box;

[0090] The fourth station 400 is used to fold the c14, c16, c17 and c18 edges of the face paper C.

[0091] The fifth station 500 is used to remove the formed barrel from the inner mold 800.

[0092] Since the various workstations in this application are distributed in two layers, in this embodiment, after the barrel is formed at the fifth workstation 500 on the lower layer, it can be directly output on the lower layer and connected to subsequent equipment, which shortens the transfer time between the formed barrel and adjacent processing equipment, thereby improving the overall processing efficiency.

[0093] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0094] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0095] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A barrel / box forming machine, characterized in that: It includes a first station (100), a second station (200), a third station (300), a fourth station (400), a fifth station (500), a sixth station (600), and at least one inner mold (800) that flows between the six stations, wherein the first station (100), the second station (200), and the sixth station (600) are located in the first layer, and the third station (300), the fourth station (400), and the fifth station (500) are located in the second layer; The first station (100) is used to load the bottom cover (A) onto the inner mold (800); The second station (200) is used to feed the combination of face paper (C) and gray board (B) to the bottom of the inner mold (800) and align it with the inner mold (800); The third station (300) is used to press down the assembly to form the barrel body and fold the edge of the paper (C)c15. The fourth station (400) is used to fold the c14, c16 and c18 edges of the face paper (C); The sixth station (600) is used to remove the formed barrel from the inner mold (800).

2. The barrel / box forming machine as described in claim 1, characterized in that: The fourth workstation (400) is provided with a first folding mechanism (401) for folding the c14 edge of the paper (C) and a second folding mechanism (402) for folding the c16 and c18 edges of the paper (C).

3. The barrel / box forming machine as described in claim 2, characterized in that: The fourth station (400) is also provided with a third folding mechanism (403) for folding the edge of the paper (C)c17.

4. The barrel / box forming machine as described in claim 2, characterized in that: The fifth station (500) is also provided with a third folding mechanism (403) for folding the edge of the paper (C)c17.

5. The barrel / box forming machine as described in claim 1, characterized in that: It also includes a seventh station (700), which is used to grab the assembly of incoming materials and correct its deviation before aligning and lowering it. During the descent, the c11, c12 and c13 edges of the face paper (C) are pre-folded to a vertical state and then folded onto the gray board (B).

6. The barrel / box forming machine as described in claim 5, characterized in that: The seventh workstation (700) is equipped with an industrial robot (701) for gripping the incoming assembly and a fourth folding mechanism (702) for folding the c11, c12 and c13 edges of the paper (C).

7. The barrel and box forming machine as described in claim 6, characterized in that: It also includes a conveying mechanism (900) for conveying the combination of gray board (B) and face paper (C) after being folded by the fourth folding mechanism (702) to the second work station (200).

8. The barrel / box forming machine as described in claim 1, characterized in that: The third workstation (300) is equipped with, The support part (301) is used to support the b3 surface of the gray plate (B) when the assembly moves down to form the shape; Side plates (302) are provided in two opposite positions and are used to limit and form the b2 and b4 surfaces of the gray plate (B) when the inner mold (800) presses the assembly down to the lower space; The first barrel edge-cutting assembly (303) is used to bend the b1 side of the gray board (B) into shape; The second barrel edge-cutting assembly (304) is used to form the c1 side of the face paper (C) onto the gray board (B).

9. The barrel / box forming machine as described in claim 8, characterized in that: The third workstation (300) is also provided with a drive mechanism (306) for driving any one of the side plates (302) to descend and avoid the flowing inner mold (800).

10. A barrel / box forming machine, characterized in that: It includes a first station (100), a second station (200), a third station (300), a fourth station (400), a fifth station (500), a sixth station (600), and at least one inner mold (800) that flows between the six stations, wherein the first station (100), the second station (200), and the sixth station (600) are located in the first layer, and the third station (300), the fourth station (400), and the fifth station (500) are located in the second layer; The first station (100) is used to load the bottom cover (A) onto the inner mold (800); The second station (200) is used to feed the combination of face paper (C) and gray board (B) to the bottom of the inner mold (800) and align it with the inner mold (800); The third station (300) is used to press down the assembly to form the barrel body of the barrel box; The fourth station (400) is used to fold the c14, c16, c17 and c18 edges of the face paper (C); The fifth station (500) is used to remove the formed barrel from the inner mold (800).

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