Container bottom forming device

Abstract

The utility model provides a container bottom forming device. The container bottom forming device comprises a star shaft, an inner pressing block installed at the end of the star shaft and an outer pressing block fixed to a profiling process frame body and driven by an air cylinder in a telescopic mode. The side edge of the outer pressing block is provided with at least two first cooling ports which are communicated through a flow channel arranged in the outer pressing block, and the first cooling ports are externally provided with a cooling liquid supply device through a liquid pipeline. The star shaft is provided with a second cooling port; the interior of the inner pressing block is hollow, the lower connecting boss is connected with the hollow part of the inner pressing block, and a cooling cavity is reserved between the interior of the connected inner pressing block and the lower connecting boss. The outer pressing block, the star shaft and the inner pressing block are all provided with the flow channels for circulating the cooling liquid, the cooling cavity is reserved in the inner pressing block, and the star shaft, the inner pressing block and the outer pressing block are combined for cooling, so that the temperature of a binder during pressing can be rapidly reduced, the cooling efficiency is high, the retention time of a product is shortened, and the production efficiency is improved. And the production efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to a container bottom forming device, belonging to the technical field of packaging box production. Background Art

[0002] Automatic box forming technology is a common automated production technology in the box production field. Traditional manual labor is inefficient, with inaccurate measurement and the risk of packaging material loss. Automated packaging replaces manual labor and offers high precision. Furthermore, automated packaging lines improve product packaging consistency, reduce packaging errors, and thus increase production efficiency.

[0003] In the packaging box pressing process, the bottom forming stage needs to be folded and the adhesive is then pressed. Due to the characteristics of the adhesive, it is a flowing liquid at a high temperature and becomes a solid after cooling. In order to increase the solidification speed of the adhesive, the existing technology has already used an active cooling method during the pressing process to reduce the temperature of the adhesive, so that it is cooled and converted to a solidified state, achieving stable bonding and accelerating production efficiency. However, the existing cooling device is generally located in the pressing block and is cooled after contacting the box body. The heat exchange time takes longer, affecting production efficiency. Summary of the Invention

[0004] Purpose of the invention: In view of the deficiencies in the prior art, the present invention provides a container bottom forming device, which realizes rapid cooling during pressing and achieves efficient pressing by providing flow channels and cooling cavities for the circulation of coolant in the star axis, the inner pressure block and the outer pressure block.

[0005] Technical solution: A container bottom forming device includes a star shaft, an inner pressure block installed at the end of the star shaft, and an outer pressure block fixed on a forming process frame and driven by a cylinder for expansion and contraction;

[0006] At least two first cooling ports are provided on the side of the outer pressing block and are connected through a flow channel provided inside the outer pressing block. The first cooling ports are supplied with cooling liquid through an external cooling liquid supply device via a liquid pipeline.

[0007] One end of the star shaft is detachably connected to the rotating frame through the upper connecting boss, and the other end is detachably connected to the inner pressure block through the lower connecting boss. The upper connecting boss and the lower connecting boss are both provided with a second cooling port, and the second cooling ports of the upper connecting boss and the lower connecting boss are connected through a flow channel running through the star shaft;

[0008] The interior of the inner pressure block is arranged to be hollow, and the lower connecting boss is connected to the hollow portion of the inner pressure block. A cooling cavity is left between the interior of the inner pressure block and the lower connecting boss after connection.

[0009] The utility model provides flow channels for circulating cooling liquid on the outer pressure block, the star shaft and the inner pressure block, and leaves a cooling cavity inside the inner pressure block. In the previous process, the bottom of the packaging box is bent and liquid adhesive is applied at the key connection points. The high temperature keeps the adhesive on the surface of the packaging box. In the current process, the combined cooling of the star shaft, the inner pressure block and the outer pressure block can rapidly reduce the temperature of the adhesive during pressing, and solidify it to fix the bottom of the packaging box into a whole. The cooling efficiency is high, the residence time of the product is reduced, and the production efficiency is further improved.

[0010] The inner pressing block is provided with a side seam pressing structure on one side close to the outer pressing block, and the side seam pressing structure includes four corner pressing protrusions, a triangular folding area pressing protrusion and an overlapping seam pressing protrusion, the top surfaces of which are located on the same horizontal plane;

[0011] The four-corner pressing protrusions include four corner pressing protrusions arranged at the four corners of the bottom of the outer pressing block corresponding to the folding positions of the four corners of the packaging box;

[0012] The triangular folding area pressing protrusion includes two symmetrically arranged convex surfaces corresponding to the shape and position of the triangular folding area of the packaging box;

[0013] The folding seam pressing protrusion includes at least one folding seam protrusion arranged at the folding seam position of the packaging box.

[0014] By providing corresponding raised portions at the gaps corresponding to the bent portions at the bottom of the packaging box, the raised portions can generate greater pressure during pressing, making the bonding portions more secure.

[0015] The inner pressing block is provided with a first pressing platform, a pressing shallow groove and a second pressing platform which are lowered in sequence from top to bottom near the outer pressing block;

[0016] The four-corner pressing protrusions are arranged at the four corners of the first pressing platform;

[0017] The front end of one of the two convex surfaces, which is close to the overlapping portion of the triangular folding area of the packaging box, is arranged in a shallow pressing groove, and the rear end and the other convex surface are both arranged on the first pressing platform. The upper end of the convex surface arranged in the shallow groove is provided with at least one pressing protrusion;

[0018] The overlapping seam protrusion is arranged at the junction of the first pressing platform and the second pressing platform.

[0019] In case of overlapping triangular folding areas, a shallow groove is provided to accommodate the overlapping parts for pressing in this area, thereby avoiding excessive pressing that causes the adhesive to be squeezed to the outside of the packaging box, affecting the appearance and user experience.

[0020] The lap seam protrusions include a lap seam pressing protrusion arranged on the first press platform and a lap seam shaping protrusion arranged on the second press platform. The top of the lap seam shaping protrusion is on the same horizontal plane as the first press platform.

[0021] The overlap seam pressing protrusion is used to tighten the overlapping part of the bottom of the packaging box coated with adhesive, that is, the area close to the inner side of the overlapping side seam. The overlap seam shaping protrusion is used to press the side seam position to prevent the side seam from warping when the overlap seam pressing protrusion is crimped, making the bottom of the packaging box flatter.

[0022] Process grooves are provided on any two opposite sides of the star shaft, and the inner pressure block and the star shaft are fixedly connected as one through bolts arranged at the bottom of the process grooves.

[0023] In order to avoid interference between the connecting parts and the packaging box, a process groove is set on the side of the star axis to facilitate the installation of bolts connected to the internal pressure block. At the same time, during the crimping process of the packaging box, the bottom is gradually sealed and the air is pushed out in the opposite direction. The process groove is also set to facilitate the discharge of air.

[0024] Sealing rubber rings are provided on the outer sides of the upper connecting boss and the lower connecting boss.

[0025] In order to ensure that the connection surfaces of the upper and lower connecting bosses of the star shaft have good airtightness.

[0026] The outer pressure block is provided with two adjustment slots in the same direction, and an adjustment hole is provided on any one of the two side surfaces of the outer pressure block in the same direction as the adjustment slot. An internal thread is provided in the adjustment hole, and the position of the outer pressure block is adjusted by rotating the adjustment bolt fixed on the pressing process frame.

[0027] During actual application, the position of the external pressure block needs to be slightly adjusted according to actual usage conditions, and the horizontal adjustment of the external pressure block is achieved by setting adjustment slots and adjustment holes.

[0028] Beneficial effects: The utility model provides flow channels for circulating cooling liquid on the outer pressure block, the star shaft and the inner pressure block, and leaves a cooling cavity inside the inner pressure block. In the previous process, the bottom of the packaging box is bent and liquid adhesive is applied at the key connection points. The high temperature keeps the adhesive on the surface of the packaging box. In the current process, the combined cooling of the star shaft, the inner pressure block and the outer pressure block can rapidly reduce the temperature of the adhesive during pressing, and solidify it to fix the bottom of the packaging box into one. The cooling efficiency is high, which reduces the product residence time and further improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0031] Figure 2 It is a schematic diagram of the lower structure of the utility model.

[0032] Figure 3 This is a structural diagram of the bottom surface of the internal pressure block of the utility model.

[0033] Figure 4 This is a side structural diagram of the internal pressure block of the utility model. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] like Figures 1 to 4 As shown, a container bottom forming device includes a star shaft 1, an inner pressure block 2 installed at the end of the star shaft 1, and an outer pressure block 3 fixed on a forming process frame and driven by a cylinder.

[0038] At least two first cooling ports 31 are provided on the side of the outer pressing block 3 and are connected through a flow channel provided inside the outer pressing block 3. The first cooling ports 31 are supplied with an external cooling liquid through a liquid pipeline.

[0039] One end of the star shaft 1 is detachably connected to the rotating frame via an upper connecting boss 11, and the other end is detachably connected to the inner pressure block 2 via a lower connecting boss 12. Both the upper connecting boss 11 and the lower connecting boss 12 are provided with a second cooling port 13, and the second cooling ports 13 of the upper connecting boss 11 and the lower connecting boss 12 are connected via a flow channel running through the star shaft 1;

[0040] The interior of the inner pressure block 2 is hollow, and the lower connecting boss 12 is connected to the hollow portion of the inner pressure block 2 . A cooling cavity 21 is left between the interior of the inner pressure block 2 and the lower connecting boss 12 after connection.

[0041] The utility model is provided with flow channels for circulating cooling liquid on the outer pressure block 3, the star axis 1 and the inner pressure block 2, and a cooling cavity 21 is left inside the inner pressure block 2. In the previous process, the bottom of the packaging box is bent and liquid adhesive is applied at the key connection points. The high temperature keeps the adhesive on the surface of the packaging box. In the current process, the combined cooling of the star axis 1, the inner pressure block 2 and the outer pressure block 3 can rapidly reduce the temperature of the adhesive during the pressing period, and solidify it to fix the bottom of the packaging box into a whole. The cooling efficiency is high, the residence time of the product is reduced, and the production efficiency is further improved.

[0042] The inner pressing block 2 is provided with a side seam pressing structure on the side close to the outer pressing block 3, and the side seam pressing structure includes four corner pressing protrusions, a triangular folding area pressing protrusion and an overlapping seam pressing protrusion, the top surfaces of which are located on the same horizontal plane;

[0043] The four-corner pressing protrusions include four corner pressing protrusions 22 arranged at the four corners of the bottom of the inner pressing block 2 corresponding to the folding positions of the four corners of the packaging box;

[0044] The triangular folding area pressing protrusion includes two symmetrically arranged protrusions 23 corresponding to the shape and position of the triangular folding area of the packaging box;

[0045] The folding seam pressing protrusion includes at least one folding seam protrusion 24 arranged at the folding seam position of the packaging box.

[0046] By providing corresponding raised portions at the gaps corresponding to the bent portions at the bottom of the packaging box, the raised portions can generate greater pressure during pressing, making the bonding portions more secure.

[0047] The inner pressing block 2 is provided with a first pressing platform 25, a pressing shallow groove 26 and a second pressing platform 27 which are arranged in descending order from top to bottom near the outer pressing block 3;

[0048] The four-corner pressing protrusions are arranged at the four corners of the first pressing platform 25;

[0049] The front end of one of the two convex surfaces 23, which is close to the overlapping portion of the triangular folding area of the packaging box, is set in the pressing shallow groove 26, and the rear end and the other convex surface 23 are both set on the first pressing platform 25. The upper end of the convex surface 23 set in the shallow groove is provided with at least one pressing protrusion 231;

[0050] The folding protrusion 24 is provided at the junction of the first pressing platform 25 and the second pressing platform 27 .

[0051] In the case of overlapping triangular folding areas, a shallow groove is set to accommodate the overlapping parts for pressing in this area, avoiding excessive pressing that causes the adhesive to be squeezed to the outside of the packaging box, affecting the appearance and user experience.

[0052] The lap seam protrusions 24 include a lap seam pressing protrusion 241 provided on the first pressing platform 25 and a lap seam shaping protrusion 242 provided on the second pressing platform 27 . The top of the lap seam shaping protrusion 242 is on the same horizontal plane as the first pressing platform 25 .

[0053] The overlap seam pressing protrusion 241 is used to press the overlapping part of the bottom of the packaging box coated with adhesive, that is, the area close to the inner side of the overlapping side seam. The overlap seam shaping protrusion 242 is used to press the side seam position to prevent the side seam from warping when the overlap seam pressing protrusion 241 is pressed, so as to make the bottom of the packaging box flatter.

[0054] Process grooves 14 are formed on any two opposite sides of the star shaft 1 , and the inner pressure block 2 and the star shaft 1 are fixedly connected as one through bolts 15 arranged at the bottom of the process grooves 14 .

[0055] In order to avoid interference between the connecting parts and the packaging box, a process groove 14 is set on the side of the star axis 1 to facilitate the installation of the bolt 15 connected to the inner pressure block 2. At the same time, during the crimping process of the packaging box, the bottom is gradually sealed and the air is pushed out in the opposite direction. The setting of the process groove 14 also facilitates the discharge of air.

[0056] Sealing rubber rings 16 are provided on the outer sides of the upper connecting boss 11 and the lower connecting boss 12 .

[0057] In order to ensure that the connection surfaces of the upper and lower connecting bosses 12 of the star shaft 1 have good airtightness.

[0058] The outer pressure block 3 is provided with two adjustment slots 32 in the same direction, and an adjustment hole 33 is provided on any one of the two side surfaces of the outer pressure block 3 in the same direction as the adjustment slot 32. An internal thread is provided in the adjustment hole 33, and the position of the outer pressure block 3 is adjusted by rotating the adjustment bolt fixed on the press process frame.

[0059] During actual application, the position of the external pressure block 3 needs to be fine-tuned according to actual usage conditions, and the horizontal adjustment of the external pressure block 3 is achieved by providing the adjustment slot 32 and the adjustment hole 33 .

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0061] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A container bottom forming device, comprising a star shaft (1), an inner pressure block (2) mounted on the end of the star shaft (1), and an outer pressure block (3) fixed on a forming process frame and driven by a cylinder for expansion and contraction; characterized in that: At least two first cooling ports (31) are provided on the side of the outer pressing block (3) and are connected through a flow channel provided inside the outer pressing block (3). The first cooling ports (31) are connected to an external cooling liquid supply device through a liquid pipeline. One end of the star shaft (1) is detachably connected to the rotating frame via an upper connecting boss (11), and the other end is detachably connected to the inner pressure block (2) via a lower connecting boss (12), and both the upper connecting boss (11) and the lower connecting boss (12) are provided with a second cooling port (13), and the second cooling ports (13) of the upper connecting boss (11) and the lower connecting boss (12) are communicated via a flow channel penetrating the star shaft (1); The interior of the internal pressure block (2) is configured to be hollow, and the lower connecting boss (12) is connected to the hollow portion of the internal pressure block (2). After the connection, a cooling cavity (21) is left between the interior of the internal pressure block (2) and the lower connecting boss (12).

2. The container bottom forming device according to claim 1, characterized in that: The inner pressure block (2) is provided with a side seam pressing structure on one side close to the outer pressure block (3), and the side seam pressing structure comprises four corner pressing protrusions, a triangular folding area pressing protrusion, and an overlapping seam pressing protrusion, the top surfaces of which are located on the same horizontal plane; The four-corner pressing protrusions include four corner pressing protrusions (22) arranged at the four corners of the bottom of the inner pressing block (2) corresponding to the folding positions of the four corners of the packaging box; The triangular folding area pressing protrusion comprises two symmetrically arranged convex surfaces (23) corresponding to the shape and position of the triangular folding area of the packaging box; The folding seam pressing protrusion comprises at least one folding seam protrusion (24) arranged at the folding seam position of the packaging box.

3. The container bottom forming device according to claim 2, characterized in that: The inner pressure block (2) is provided with a first pressure platform (25), a pressing shallow groove (26), and a second pressure platform (27) which are arranged in descending order from top to bottom on one side of the inner pressure block (2) close to the outer pressure block (3); The four-corner pressing protrusions are arranged at the four corners of the first pressing platform (25); The front end of one of the two convex surfaces (23) located near the overlapping portion of the triangular folding area of the packaging box is arranged in a shallow pressing groove (26), and the rear end and the other convex surface (23) are both arranged on a first pressing platform (25), and the upper end of the convex surface (23) arranged in the shallow groove is provided with at least one pressing protrusion (231); The overlapping seam protrusion (24) is arranged at the junction of the first pressing platform (25) and the second pressing platform (27).

4. The container bottom forming device according to claim 3, characterized in that: The lap seam protrusion (24) comprises a lap seam pressing protrusion (241) provided on the first pressing platform (25) and a lap seam shaping protrusion (242) provided on the second pressing platform (27), wherein the top of the lap seam shaping protrusion (242) is on the same horizontal plane as the first pressing platform (25).

5. The container bottom forming device according to claim 1, characterized in that: Process grooves (14) are provided on any two opposite sides of the star shaft (1), and the inner pressure block (2) and the star shaft (1) are fixedly connected as one body via bolts (15) arranged at the bottom of the process grooves (14).

6. The container bottom forming device according to claim 1, characterized in that: Sealing rubber rings (16) are provided on the outer sides of the upper connecting boss (11) and the lower connecting boss (12).

7. The container bottom forming device according to claim 1, characterized in that: The outer pressure block (3) is provided with two adjustment slots (32) in the same direction, and an adjustment hole (33) is provided on any one of the two side surfaces of the outer pressure block (3) in the same direction as the adjustment slots (32). An internal thread is provided in the adjustment hole (33), and the position of the outer pressure block (3) is adjusted by rotating an adjustment bolt fixed on the press process frame.

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