Pressing method and expanding mechanism

Abstract

The invention provides a pressing method and an expansion mechanism, and the method comprises the steps: applying an opposite force to a pressing surface of a workpiece, and enabling the pressing surface to be pressed at a first preset position under the opposite force. A one-way force is applied to the flexible surface of the workpiece, the flexible surface is supported by the one-way force, and the one-way force is applied from the inside to the outside of the workpiece. The device comprises a power structure, a flexible pressure structure and an expansion structure. When the pressing surface is subjected to second pressure, the expansion structure moves towards the pressing surface through power provided by the power structure, so that the expansion structure stops at a first preset position, and when the pressing surface is subjected to second pressure, the expansion structure is tightly attached to the pressing surface and provides first pressure for the pressing surface. The flexible pressure structure is connected with the expansion structure, and the expansion structure applies one-way force to the flexible surface of the workpiece through the flexible pressure structure. According to the pressing method and the expanding mechanism, different types of force are applied in different directions, so that the defective rate of produced paper boxes is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece processing, and in particular to a pressing method and an expansion mechanism. Background Art

[0002] With the continuous development of science and technology, the quality of various products is also constantly improving. Boxes are a very common product in people's lives. For example, rectangular paper boxes for packaging wine, paper boxes for holding paper, etc. It is understandable that paper boxes need to hold items. Among the six sides of the paper box, one side must be open, and people can put items into the paper box through the open side. The paper box is processed by a workpiece with a press edge. The workpiece needs to be coated with glue on the press edge, and then the press edge needs to be buckled into the box body and glued so that the press edge and the box body are firmly attached. The glue operation is generally performed on the top surface, the pressing surface and the opposite side of the pressing surface.

[0003] In the prior art, the gluing device of the paper box is composed of a solid block slightly smaller than the paper box, and the paper box is loaded manually and the gluing is performed by a cylinder. However, the defective rate of the paper boxes produced by the existing gluing device is low and the manual operation efficiency is low. Therefore, how to reduce the defective rate of the paper boxes produced by the gluing device and improve the efficiency of automated processing has become a technical problem that technicians in this field need to solve urgently.

[0004] Through research, in order to avoid subsequent debonding, the three sides mentioned above must have a large pressing force, while the other two sides need to remain relatively free to prevent each side from being damaged by the pressing force. That is, during the gluing process, a structure is required to ensure that the top surface and the two side surfaces are subjected to a double-sided rigid pressing force to ensure that the pressing edge can be adhered to the box body, while the other two sides are subjected to a single-sided flexible pressure to ensure that the box body is stretched open, so that the surface subjected to the rigid pressing force fits better with the tool that provides the pressing force, thereby improving the adhesion strength. On the market, no structural form mentioned above has been found to meet the gluing requirements. Summary of the invention

[0005] Based on the above problems, the present application provides a lamination method and an expansion mechanism, which reduces the defective rate of paper boxes produced by the gluing device by applying different types of forces to different sides of the paper box. At the same time, the automated device can improve production efficiency.

[0006] The present application provides a lamination method, the method comprising:

[0007] Applying an opposing force to the pressing surface of the workpiece so that the pressing surface is pressed at a first preset position by the opposing force, the workpiece is a box-shaped workpiece, the opposing force includes a first pressure and a second pressure, one of which is a force applied by an external device and the other is a reaction force, the first pressure is a force from the inside of the workpiece to the outside, and the second pressure is a force from the outside of the workpiece to the inside, the edge of the box cover of the workpiece is glued and buckled into the box body and the surface in contact with the inner wall of the box body and the opposite side thereof are pressing surfaces, and the other side surfaces of the workpiece contacting the pressing surface are flexible surfaces;

[0008] In order to facilitate the operation of the machine and to control the variables easily, preferably, the second pressure is a force applied from the outside to the inside of the workpiece, and the first pressure is a reaction force from the inside of the workpiece to the outside generated by applying the second pressure;

[0009] There are many options for external equipment, as long as it can generate force on the pressing surface, such as a cylinder, a motor driving a chain gear structure to move forward, etc.

[0010] A unidirectional force is applied to the flexible surface of the workpiece to support the flexible surface by the unidirectional force, wherein the unidirectional force is a force applied from the inside to the outside of the workpiece.

[0011] In a possible implementation, the first pressure and the unidirectional force are provided by the same tensioning block, and the method further includes:

[0012] The tension block moves toward the pressing surface and the flexible surface;

[0013] When the displacement of the tension block relative to the pressing surface reaches a preset value, the tension block stops moving in the first pressure direction;

[0014] When the tension block is in contact with the flexible surface, the tension block continues to move in the direction of the unidirectional force and presses against the flexible surface, thereby applying the unidirectional force to the flexible surface.

[0015] In a possible implementation, the unidirectional force is generated by the elastic force of the elastic component itself, and the elastic force provided by the elastic component causes the tension block to move to the second preset position in the direction of the unidirectional force.

[0016] In a possible implementation, the method further includes:

[0017] When the pressing surface is subjected to the opposite force, the box cover of the workpiece is subjected to the box cover opposite force, and the box cover opposite force includes a third pressure and a fourth pressure, the fourth pressure is a force applied from the outside to the inside of the workpiece, and the third pressure is a reaction force from the inside of the workpiece to the outside generated by applying the fourth pressure.

[0018] The present application also provides an expansion mechanism, which includes:

[0019] Power structure, flexible pressure structure and expansion structure;

[0020] The expansion structure moves toward the pressing surface by the power provided by the power structure, so that the expansion structure stops at a first preset position. When the pressing surface is subjected to a second pressure, the expansion structure is pressed against the pressing surface and generates a first pressure on the pressing surface. The workpiece is a box-shaped workpiece. The second pressure is a force applied from the outside to the inside of the workpiece. The edge of the box cover of the workpiece is glued and buckled into the box body and the surface in contact with the inner wall of the box body and the opposite side thereof are the pressing surface, and the other side surfaces of the workpiece in contact with the pressing surface are flexible surfaces.

[0021] The flexible pressure structure is connected to the expansion structure, and the expansion structure applies a unidirectional force to the flexible surface of the workpiece through the flexible pressure structure.

[0022] In a possible implementation, the expansion structure includes:

[0023] Tension block and reset structure;

[0024] The tension block is used to move toward the pressing surface and the flexible surface under the power provided by the power structure;

[0025] When the displacement of the tension block relative to the pressing surface reaches a preset value, the tension block stops moving in the first pressure direction;

[0026] When the tension block is in contact with the flexible surface, the tension block continues to move in the direction of the unidirectional force and presses against the flexible surface through the force provided by the flexible pressure structure, thereby applying the unidirectional force to the flexible surface;

[0027] The reset structure is used to make the expanded structure retract to a non-expanded state under the action of the reset structure when the workpiece is processed.

[0028] In a possible implementation, the flexible pressure structure includes:

[0029] A first spring, a wedge block and a connecting rib;

[0030] When the tension block is in contact with the flexible surface, the elastic force provided by the first spring causes the tension block to move to a preset position in the direction of the unidirectional force;

[0031] The wedge block is connected to the tension block via a connecting rib;

[0032] The first spring is arranged between the wedge block and the connecting rib, and the wedge block is used to transmit the power provided by the power structure to the first spring to deform the first spring, and the first spring applies an elastic force to the tensioning block through the connecting rib, and the connecting rib applies the elastic force to the tensioning block, so that the tensioning block applies a unidirectional force to the flexible surface of the workpiece through the elastic force.

[0033] In a possible implementation, the power structure includes:

[0034] first cylinder and tapered shaft;

[0035] The output end of the first cylinder is connected to the tapered shaft;

[0036] The expansion structure is provided with a tapered surface that matches with the tapered shaft. The tapered shaft transmits the power provided by the first cylinder to the expansion structure by matching with the tapered surface.

[0037] In a possible implementation, the expansion structure includes:

[0038] A guide rail mounting plate, a first linear guide rail, a guide rail transition plate, a second linear guide rail, a jacking structure and a support column;

[0039] The guide rail mounting plate is provided with the first linear guide rail, and the first linear guide rail is arranged perpendicular to the pressing surface;

[0040] The guide rail transition plate is installed on the first linear guide rail, and the guide rail transition plate is used for transition between the first linear guide rail and the second linear guide rail;

[0041] The second linear guide rail is arranged above the guide rail transition plate, the guide rail transition plate carries a wedge-shaped structure, and the second linear guide rail is arranged perpendicular to the flexible surface;

[0042] The lifting structure is used to lift up the expansion mechanism;

[0043] The jacking structure includes a second cylinder and a transition plate;

[0044] The transition plate is installed below the first cylinder, and the second cylinder is installed below the transition plate, and the second cylinder is used to provide power for lifting the expansion mechanism;

[0045] The support column is installed between the transition plate and the tension block mounting plate, and the support column is used to support the expansion mechanism.

[0046] In a possible implementation, the expansion mechanism further includes:

[0047] Linear bearings;

[0048] The linear bearing is wrapped around the outside of the tapered shaft, and the linear bearing is used to make the tapered shaft move along the direction of the linear bearing.

[0049] Compared with the prior art, this application has the following beneficial effects:

[0050] The expansion mechanism provided by the present application includes a power structure, a flexible pressure structure and an expansion structure. The expansion mechanism of the present application can accurately control the type of force. In the background technology, the existing glue pressing device usually relies on manual operation and simple cylinder control, resulting in only rigid pressing force, which leads to problems such as uneven pressing and paper box debonding. The expansion mechanism of the present application can accurately generate flexible force and rigid force through the flexible pressure structure and the expansion structure, and the rigid surface can be subjected to the rigid pressing force. When the force is applied to the paper box from the outside, it can ensure that the pressing edge is firmly bonded to the box body. At the same time, the flexible surface is supported by appropriate unidirectional force through the flexible pressure structure, which prevents the structure of the paper box from being damaged by excess pressure and avoids the production of defective products. In addition, since the expansion mechanism provided by the present application is used to process the workpiece, the cooperation of the flexible pressure structure and the expansion structure makes the flexible surface supported by the unidirectional force, and the support of the flexible surface can make the pressing surface more firmly bonded. The expansion mechanism provided by the present application has stronger adaptability than the prior art. Through the combination of the expansion structure and the flexible pressure structure, the application of force can be adjusted in real time according to the changes in the carton shape and production needs, avoiding damage or deformation of the carton due to uneven pressing force in traditional technology. This flexible adjustment capability greatly improves the reliability and stability of the production process. Secondly, compared with the cumbersome manual operation and simple cylinder control in the background technology, the structural design of the present application makes the gluing process more automated, reducing the necessity of manual intervention, thereby greatly improving production efficiency and consistency. This not only reduces the workload of manual operation, but also reduces human operation errors, further reducing the defective rate of carton; it also improves the degree of fit between the pressing surface and the tension block, and further improves the bonding strength between the edge of the box cover and the inner side of the box body after the opposing force is applied to the pressing surface.

[0051] The lamination method provided by the present application applies corresponding forces to different surfaces of the workpiece, applies an opposite force to the lamination surface of the workpiece, and applies a unidirectional force to the flexible surface of the workpiece. The applied opposite forces include a first pressure and a second pressure. It can be understood that the action of the forces is mutual, and the reaction force generated when the second pressure acts on the lamination surface is the first pressure. The first pressure and the second pressure can act on the inner and outer sides of the lamination surface respectively, so that the lamination surfaces can be bonded more firmly. At the same time, the flexible surface is supported by appropriate unidirectional forces through the flexible pressure structure, which prevents the rigid pressure from destroying the structure of the paper box and avoids the production of defective products; it also improves the degree of fit between the lamination surface and the tension block, and further improves the bonding strength between the edge of the box cover and the inner side of the box body after the opposite force is applied to the lamination surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0053] Figure 1 A flow chart of a lamination method provided in an embodiment of the present application;

[0054] Figure 2 A schematic diagram of a workpiece provided in an embodiment of the present application;

[0055] Figure 3 Another workpiece schematic diagram provided in an embodiment of the present application;

[0056] Figure 4 A schematic diagram of the overall structure of an expansion mechanism in a retracted state provided in an embodiment of the present application;

[0057] Figure 5 A schematic diagram of the overall structure of an expansion mechanism in an expanded state provided in an embodiment of the present application;

[0058] Figure 6 A front view of an expansion mechanism in an expanded state provided in an embodiment of the present application;

[0059] Figure 7 A vertical cross-sectional view of a retracted state of an expansion mechanism provided in an embodiment of the present application;

[0060] Figure 8 A cross-sectional view of an expansion mechanism provided in an embodiment of the present application;

[0061] Fig. 9 A cross-sectional view of another expansion mechanism provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] As described above, in the prior art, the gluing device of the paper box is composed of a solid block slightly smaller than the paper box, the paper box is loaded manually, and the gluing is performed by a cylinder. However, the defective rate of the paper boxes produced by the gluing device is low.

[0063] After research, it was found that when the glue pressing device composed of solid blocks is glued, the top surface and four side surfaces of the workpiece will receive almost the same pressure. If a large force is applied, although the top surface, the pressing surface and the opposite side of the pressing surface are not easy to be glued, the flexible surface is very easy to be damaged. If the problem of damage to the flexible surface is taken into consideration, the top surface, the pressing surface and the opposite side of the pressing surface will be very easy to be glued, and the defective rate of the produced paper box is high.

[0064] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] Figure 1 A flow chart of a lamination method provided in an embodiment of the present application, the lamination method comprising:

[0066] S101: applying an opposing force to a pressing surface of a workpiece, so that the pressing surface is pressed at a first preset position by the opposing force.

[0067] An opposing force is applied to the pressing surface of the workpiece so that the pressing surface is pressed at a first preset position by the opposing force. In a possible implementation, the opposing force can be applied to the pressing surface of the workpiece by a device, such as a clamp-shaped structure, and the clamp-shaped structure is used to clamp the pressing surface to apply the opposing force. The opposing force includes a first pressure and a second pressure, one of which is a force applied by an external device and the other is a reaction force, the first pressure is a force from the inside of the workpiece to the outside, and the second pressure is a force from the outside of the workpiece to the inside.

[0068] In another possible implementation, the opposing force can be applied by a second pressure applied by a device outside the workpiece, and the device inside the workpiece sends a reaction force to the outside of the workpiece under the action of the second pressure, and the reaction force is the first pressure. For example, the first device is inside the workpiece, and the second device is outside the workpiece. The second device applies a second pressure from the outside of the workpiece to the outside of the pressing surface of the workpiece, and the first device gives a reaction force to the inside of the pressing surface of the workpiece under the action of the second pressure applied by the second device, and the reaction force is the first pressure.

[0069] There is another possible implementation method, where a fixed plate (second device) close to the pressing surface is placed outside the workpiece, and the first device inside the workpiece continuously moves outward and abuts against the pressing surface, and then continues to move to give the pressing surface a thrust from the inside to the outside (first pressure), and then the second pressure is immediately generated, which is the reaction force of the fixed plate on the pressing surface from the outside to the inside, so the opposite force on the pressing surface is generated and forms a pressing effect. The first device here can be the specific structural form of the expansion mechanism mentioned below, or it can be a power component that drives a pressing plate to move inside the workpiece and abut against the pressing surface inside the workpiece.

[0070] The workpiece can be a box-shaped workpiece, and the box-shaped workpiece can be any box-shaped workpiece, such as a rectangular workpiece and a hexagonal workpiece, etc. However, in production and life, rectangular workpieces are mainly produced and used. The edge of the box cover of the workpiece is glued and buckled into the box body and the surface that contacts the inner wall of the box body and the opposite side are the pressing surfaces, and the other side surfaces of the workpiece that contact the pressing surfaces are flexible surfaces.

[0071] Next, we will take a rectangular workpiece as an example and explain the pressing surface and the flexible surface in conjunction with the attached drawings. Figure 2 A schematic diagram of a workpiece provided in an embodiment of the present application, Figure 3 A schematic diagram of another workpiece provided in an embodiment of the present application. Figure 2 It is a rectangular workpiece with a closed lid. Figure 2 The edge of the box cover can be clearly seen. Figure 2 The pressing surface is marked in the figure. The pressing surface is the surface where the edge of the cover of the workpiece is glued into the box body and contacts the inner wall of the box body. Figure 2 The other side surface of the workpiece that contacts the press-fit surface is a flexible surface.

[0072] For ease of explanation, Figure 3 Expand the pressed surface and the opposite side of the pressed surface. Figure 3 The five surfaces of the workpiece are marked in Figure 1, which are the cover contact surface, the opposite side of the cover contact surface, the two flexible surfaces, and the top surface. Figure 3 When the box lid (top surface) of the rectangular workpiece shown in the figure is closed, the box lid contact surface contacts the box lid, and the edge of the box lid of the workpiece is glued and buckled into the box body and contacts the inner wall of the box body, that is, the box lid contact surface in the figure is the pressing surface, and the opposite side of the box lid contact surface is also the pressing surface.

[0073] S102: Apply a unidirectional force to the flexible surface of the workpiece to support the flexible surface by the unidirectional force.

[0074] The unidirectional force is a force applied from the inside of the workpiece to the outside. The unidirectional force may be a force applied from the inside of the workpiece to the outside by a device inside the workpiece.

[0075] In a possible implementation, the first pressure and the unidirectional force are provided by the same tension block. In this case, when the workpiece is processed, the tension block can move toward the pressing surface and the flexible surface. When the displacement of the tension block relative to the pressing surface reaches a preset value, the tension block can stop moving in the direction of the first pressure. In a possible implementation, the preset value can be set according to the condition of the workpiece, and a larger preset value will be set for a larger workpiece.

[0076] When the tension block fits the flexible surface, the tension block continues to move in the direction of the unidirectional force and presses against the flexible surface, applying unidirectional force to the flexible surface. It can be understood that the workpiece is a whole, and when the tension block applies unidirectional force to the flexible surface, the pressed surface of the workpiece can be more fully affected by the opposite force, and the opposite force makes the workpiece bonded more tightly, thereby preventing possible debonding during use, thereby reducing the defective rate.

[0077] The tensioning block can support the flexible surface through a unidirectional force so that the flexible surface will not be damaged.

[0078] Since the tension block continues to move in the direction of the unidirectional force and presses against the flexible surface, a unidirectional force is applied to the flexible surface. This unidirectional force can correct the flexible surface of the workpiece to a certain extent, and also improve the degree of fit between the pressing surface and the tension block, further improving the bonding strength between the edge of the box cover and the inner side of the box body after the counter force is applied to the pressing surface.

[0079] For example, if there is a small dent on a flexible surface of a workpiece, if the dent is not treated, the product produced is likely to be a defective product. When the tensioning block applies a unidirectional force to the flexible surface, the dent on the flexible surface can be repaired by the unidirectional force, thereby reducing the probability of the product being a defective product.

[0080] The unidirectional force can be generated by different devices, such as springs, rubber and inflatable devices. In a possible implementation, the unidirectional force is generated by the elastic force of the elastic member itself, and the elastic force provided by the elastic member causes the tension block to move to the second preset position in the direction of the unidirectional force. In a possible implementation, the size of the second preset position can also be set according to the size of the workpiece in the actual processing situation.

[0081] In order to make the glue applied on the workpiece adhere better, an opposing force can be applied to the cover of the workpiece. In a possible implementation, when the pressing surface is subjected to the opposing force, the cover of the workpiece is subjected to the opposing force of the cover, and the opposing force of the cover includes a third pressure and a fourth pressure, the third pressure is a force applied from the inside of the workpiece to the outside, and the fourth pressure is a force applied from the outside of the workpiece to the inside.

[0082] The lamination method provided by the present application applies corresponding forces to different surfaces of the workpiece, applies an opposite force to the lamination surface of the workpiece, and applies a unidirectional force to the flexible surface of the workpiece. The applied opposite forces include a first pressure and a second pressure. It can be understood that the action of the forces is mutual, and the reaction force generated when the second pressure acts on the lamination surface is the first pressure. The first pressure and the second pressure can act on the inner and outer sides of the lamination surface respectively, so that the lamination surfaces can be bonded more firmly. At the same time, the flexible surface is supported by appropriate unidirectional force through the flexible pressure structure, which prevents excess pressure from damaging the structure of the paper box and avoids the production of defective products; it also improves the degree of fit between the lamination surface and the tension block, and further improves the bonding strength between the edge of the box cover and the inner side of the box body after the opposite force is applied to the lamination surface.

[0083] Figure 4 This is a schematic diagram of the overall structure of an expansion mechanism in a retracted state provided by the present application. Figure 5 This is a schematic diagram of the overall structure of an expansion mechanism in the expanded state provided in the present application.

[0084] It should be noted that Figure 4 and Figure 5 What is shown is only a schematic diagram of the overall structure of an expansion mechanism. Any device that has a power structure, a flexible pressure structure and an expansion structure and works according to the method provided in this application should fall within the scope of protection of this application.

[0085] Figure 4 and Figure 5 The flexible pressure structure 100 and the expansion structure 200 are connected to each other. Figure 4 In the overall structural diagram of the expansion mechanism in the retracted state shown, the flexible pressure structure cannot be displayed in the overall diagram, and the flexible pressure structure will be described in detail in the cross-sectional diagram below.

[0086] The expansion structure 200 moves toward the pressing surface through the power provided by the power structure 100, so that the expansion structure 200 stops at the first preset position. When the pressing surface is subjected to the second pressure, the expansion structure 200 is close to the pressing surface and generates the first pressure on the pressing surface. The workpiece is a box-shaped workpiece, and the second pressure is the force applied from the outside of the workpiece to the inside. The edge of the box cover of the workpiece is glued and buckled into the box body and the surface in contact with the inner wall of the box body and the opposite side are the pressing surface, and the other side of the workpiece in contact with the pressing surface is the flexible surface. The description of the pressing surface and the flexible surface can be found in detail. Figure 2 and Figure 3 The part will not be elaborated here.

[0087] The flexible pressure structure is connected to the expansion structure 200, and the expansion structure 200 applies a unidirectional force to the flexible surface of the workpiece through the flexible pressure structure.

[0088] Figure 6A front view of an expansion mechanism in an expanded state provided in the present application, Figure 7 A vertical cross-sectional view of a retracted state of an expansion mechanism provided in this application, Figure 6 and Figure 7 Included:

[0089] Power structure, flexible pressure structure and expansion structure;

[0090] The power structure includes a first cylinder 3 and a tapered shaft 4 .

[0091] The output end of the first cylinder 3 is connected to the tapered shaft 4, and the first cylinder 3 is used to provide power for the expansion mechanism. The expansion structure is provided with a tapered surface that cooperates with the tapered shaft. The tapered shaft 4 transmits the power provided by the first cylinder 3 to the expansion structure by cooperating with the tapered surface. The cylinder refers to a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. The air in the cylinder converts thermal energy into mechanical energy by expansion.

[0092] The tension block 11 is used to move toward the pressing surface and the flexible surface under the power provided by the power structure. Specifically, the power provided by the first cylinder 3 pushes the tapered shaft 4 upward, and the tapered shaft 4 cooperates with the tapered surface to push the tension block 11 toward the pressing surface and the flexible surface.

[0093] When the displacement of the tension block 11 relative to the pressing surface reaches a preset value, the tension block stops moving.

[0094] When the tension block 11 fits against the flexible surface, the tension block 11 continues to move in the direction of the unidirectional force and presses against the flexible surface through the force provided by the flexible pressure structure, thereby applying the unidirectional force to the flexible surface.

[0095] In a possible implementation, the flexible pressure structure includes a first spring 13, a wedge block 12 and a connecting rib. Figure 6 and Figure 7 The connecting flange will be introduced in the cross-sectional view later.

[0096] In a possible implementation, when the tension block 11 is in contact with the flexible surface, the elastic force provided by the first spring 13 causes the tension block 11 to move to a preset position in the direction of the unidirectional force. The preset position can be set according to actual production conditions.

[0097] The wedge block 13 is connected to the tension block 11 through a connecting rib;

[0098] A first spring 13 is arranged between the wedge block 13 and the connecting rib. The wedge block 13 is used to transmit the power provided by the power structure to the first spring 13 to deform the first spring 13. The first spring 13 applies elastic force to the tensioning block 11 through the connecting rib. The connecting rib applies the elastic force to the tensioning block 11, so that the tensioning block 11 applies a unidirectional force to the flexible surface of the workpiece through the elastic force.

[0099] In a possible implementation, the expansion structure includes a reset structure 14, and the reset structure 14 is used to make the expansion structure retract to a non-expanded state under the action of the reset structure when the workpiece processing is completed.

[0100] The expansion structure may further include a guide rail mounting plate 6 , a first linear guide rail 8 , a guide rail transition plate 9 , a second linear guide rail 10 , a lifting structure and a support column 7 .

[0101] The lifting structure includes a second cylinder 1 and a transition plate 2 .

[0102] The guide rail mounting plate 6 is provided with a first linear guide rail 8 , which is arranged perpendicular to the pressing surface. The first linear guide rail 6 is provided with a guide rail transition plate 9 , which is used for transitioning the first linear guide rail 8 and the second linear guide rail 10 .

[0103] A second linear guide rail 10 is arranged above the guide rail transition plate 9 . The guide rail transition plate 9 carries a wedge-shaped structure. The second linear guide rail 10 is arranged perpendicular to the flexible surface.

[0104] The transition plate 2 is installed below the first cylinder 3, and the second cylinder 1 is installed below the transition plate 2. The second cylinder 1 is used to provide power for the lifting and expanding mechanism.

[0105] In a possible implementation, the expansion mechanism includes a support column 7. The support column 7 is installed between the transition plate 2 and the guide rail mounting plate 6, and the support column 7 is used to support the expansion mechanism.

[0106] In a possible implementation, the expansion mechanism may include a linear bearing 5 , which is wrapped around the outside of the tapered shaft 4 , and the linear bearing 5 is used to make the tapered shaft 4 move along the direction of the linear bearing.

[0107] When processing the workpiece, the power provided by the first cylinder 3 causes the tapered shaft 4 to rise, and the rise of the tapered shaft 4 will push the tapered surface to expand the tension block 11. The tapered shaft 4 simultaneously pushes the wedge-shaped side of the guide rail transition plate 9 and the wedge-shaped block 12, so that the tension block 11 can move toward the pressing surface and the flexible surface at the same time. When the tension block 11 reaches the first preset position and the tension block 11 is against the flexible surface, the tension block 11 can prop up the flexible surface to support the workpiece. Since the unidirectional force of the tension block 11 to prop up the flexible surface is provided by the first spring 13, the unidirectional force of the tension block 11 to prop up the flexible surface is a flexible force and will not cause damage to the flexible surface.

[0108] Figure 8 A cross-sectional view of an expansion mechanism provided in this application, Fig. 9 A cross-sectional view of another expansion mechanism provided in this application, Figure 8 and Fig. 9 It is a cross-sectional view taken at different levels. Figure 8 and Fig. 9 Included:

[0109] The tapered shaft 4, the guide rail mounting plate 6, the guide rail transition plate 9, the wedge block 12, the first spring 13, the reset structure 14, the wedge structure 15 and the connecting rib 16. Figure 8 and Fig. 9 In the embodiment, the reset structure 14 is a spring.

[0110] The guide rail transition plate 9 carries a wedge-shaped structure 15 , and the wedge block 12 is connected to the tension block 11 via a connecting rib 16 .

[0111] In one possible implementation, when the expansion mechanism expands, the conical shaft 4 rises through the power provided by the first cylinder 3, and the guide rail transition plate 9 carries a wedge-shaped side. When the conical shaft 4 rises, the conical shaft 4 touches the wedge-shaped side of the guide rail transition plate 9, thereby pushing the tensioning block 11 so that the tensioning block 11 moves under the guidance of the first linear guide 8.

[0112] When the tapered shaft 4 rises, the tapered shaft 4 touches the wedge block 12 , thereby pushing the tension block 11 so that the tension block 11 moves under the guidance of the second linear guide rail 10 .

[0113] The wedge block 12 applies elastic force to the tension block 11 through the first spring 13 and the connecting rib 16, and the tension block 11 applies unidirectional force to the flexible surface through the elastic force. In this embodiment, a square box body is taken as an example, and four tension blocks 11 are selected and set. The tension blocks 11 generate an expansion movement through the first cylinder 3, and each tension block 11 moves toward a corner of the box body respectively, and then the tension block 11 reaches the preset position of the pressing surface. At this time, the tension block supports the adjacent flexible surface, and finally an external force is applied externally to apply an opposite force to the pressing surface for pressing work. The externally applied force can be in various forms, such as a cylinder connecting a pressing plate to apply force to the pressing surface, or a motor drives a sprocket structure to make the pressing plate connected to the chain move until pressure is applied to the pressing surface, etc.

[0114] The expansion mechanism provided by the present application includes a power structure, a flexible pressure structure and an expansion structure. The expansion mechanism of the present application can accurately control the type of force. In the background technology, the existing glue pressing device usually relies on manual operation and simple cylinder control, resulting in only rigid pressing force, which leads to problems such as uneven pressing and paper box debonding. The expansion mechanism of the present application can accurately generate flexible force and rigid force through the flexible pressure structure and the expansion structure, and the rigid surface can be subjected to the rigid pressing force. When the force is applied to the paper box from the outside, it can ensure that the pressing edge is firmly bonded to the box body. At the same time, the flexible surface is supported by appropriate unidirectional force through the flexible pressure structure, which prevents the structure of the paper box from being damaged by excess pressure and avoids the production of defective products. In addition, since the expansion mechanism provided by the present application is used to process the workpiece, the cooperation of the flexible pressure structure and the expansion structure makes the flexible surface supported by the unidirectional force, and the support of the flexible surface can make the pressing surface more firmly bonded. The expansion mechanism provided by the present application has stronger adaptability than the prior art. Through the combination of the expansion structure and the flexible pressure structure, the application of force can be adjusted in real time according to the changes in the carton shape and production needs, avoiding damage or deformation of the carton due to uneven pressing force in traditional technology. This flexible adjustment capability greatly improves the reliability and stability of the production process. Secondly, compared with the cumbersome manual operation and simple cylinder control in the background technology, the structural design of the present application makes the gluing process more automated, reducing the necessity of manual intervention, thereby greatly improving production efficiency and consistency. This not only reduces the workload of manual operation, but also reduces human operating errors, further reducing the defective rate of carton boxes.

[0115] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The device embodiment described above is merely schematic, in which the unit described as a separate component may or may not be physically separated, and the component prompted as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative work.

[0116] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A lamination method, characterized in that: include: Applying an opposing force to the pressing surface of the workpiece so that the pressing surface is pressed at a first preset position by the opposing force, the workpiece is a box-shaped workpiece, the opposing force includes a first pressure and a second pressure, one of which is a force applied by an external device and the other is a reaction force, the first pressure is a force from the inside of the workpiece to the outside, and the second pressure is a force from the outside of the workpiece to the inside, the edge of the box cover of the workpiece is glued and buckled into the box body and the surface in contact with the inner wall of the box body and the opposite side thereof are pressing surfaces, and the other side surfaces of the workpiece contacting the pressing surface are flexible surfaces; A unidirectional force is applied to the flexible surface of the workpiece to support the flexible surface by the unidirectional force, wherein the unidirectional force is a force applied from the inside to the outside of the workpiece.

2. The method according to claim 1, characterized in that The first pressure and the unidirectional force are provided by the same tensioning block, and the method further comprises: The tension block moves toward the pressing surface and the flexible surface; When the displacement of the tension block relative to the pressing surface reaches a preset value, the tension block stops moving in the first pressure direction; When the tension block is in contact with the flexible surface, the tension block continues to move in the direction of the unidirectional force and presses against the flexible surface, applying the unidirectional force to the flexible surface; The second pressure is a force applied from the outside to the inside of the workpiece, and the first pressure is a reaction force generated by the inside of the workpiece toward the outside when the second pressure is applied.

3. The method according to claim 2, characterized in that The unidirectional force is generated by the elastic force of the elastic component itself, and the elastic force provided by the elastic component causes the tension block to move to a second preset position in the direction of the unidirectional force.

4. The method according to claim 1, characterized in that: The method further comprises: When the pressing surface is subjected to the opposite force, the box cover of the workpiece is subjected to the box cover opposite force, and the box cover opposite force includes a third pressure and a fourth pressure, one of which is an externally applied force and the other is a reaction force, the third pressure is a force from the inside to the outside of the workpiece, and the fourth pressure is a force from the outside to the inside of the workpiece.

5. An expansion mechanism, characterized in that: include: Power structure, flexible pressure structure and expansion structure; The expansion structure moves toward the pressing surface by the power provided by the power structure, so that the expansion structure stops at a first preset position. When the pressing surface is subjected to a second pressure, the expansion structure is pressed against the pressing surface and generates a first pressure on the pressing surface. The workpiece is a box-shaped workpiece, and the second pressure is a force applied from the outside to the inside of the workpiece. The edge of the box cover of the workpiece is glued and buckled into the box body and the surface in contact with the inner wall of the box body and the opposite side thereof are the pressing surface, and the other side surfaces of the workpiece in contact with the pressing surface are flexible surfaces. The flexible pressure structure is connected to the expansion structure, and the expansion structure applies a unidirectional force to the flexible surface of the workpiece through the flexible pressure structure.

6. The expansion mechanism according to claim 5, characterized in that: The expansion structure comprises: Tension block and reset structure; The tension block is used to move toward the pressing surface and the flexible surface under the power provided by the power structure; When the displacement of the tension block relative to the pressing surface reaches a preset value, the tension block stops moving in the first pressure direction; When the tension block is in contact with the flexible surface, the tension block continues to move in the direction of the unidirectional force and presses against the flexible surface through the force provided by the flexible pressure structure, thereby applying the unidirectional force to the flexible surface; The reset structure is used to make the expanded structure retract to a non-expanded state under the action of the reset structure when the workpiece is processed.

7. The expansion mechanism according to claim 6, characterized in that: The flexible pressure structure comprises: A first spring, a wedge block and a connecting rib; When the tension block is in contact with the flexible surface, the elastic force provided by the first spring causes the tension block to move to a preset position in the direction of the unidirectional force; The wedge block is connected to the tension block via a connecting rib; The first spring is arranged between the wedge block and the connecting rib, and the wedge block is used to transmit the power provided by the power structure to the first spring to deform the first spring, and the first spring applies an elastic force to the tensioning block through the connecting rib, and the connecting rib applies the elastic force to the tensioning block, so that the tensioning block applies a unidirectional force to the flexible surface of the workpiece through the elastic force.

8. The expansion mechanism according to claim 5, characterized in that: The power structure comprises: first cylinder and tapered shaft; The output end of the first cylinder is connected to the tapered shaft; The expansion structure is provided with a tapered surface that matches with the tapered shaft. The tapered shaft transmits the power provided by the first cylinder to the expansion structure by matching with the tapered surface.

9. The expansion mechanism according to claim 6, characterized in that: The expansion structure comprises: A guide rail mounting plate, a first linear guide rail, a guide rail transition plate, a second linear guide rail, a jacking structure and a support column; The guide rail mounting plate is provided with the first linear guide rail, and the first linear guide rail is arranged perpendicular to the pressing surface; The guide rail transition plate is installed on the first linear guide rail, and the guide rail transition plate is used for transition between the first linear guide rail and the second linear guide rail; The second linear guide rail is arranged above the guide rail transition plate, the guide rail transition plate carries a wedge-shaped structure, and the second linear guide rail is arranged perpendicular to the flexible surface; The lifting structure is used to lift up the expansion mechanism; The jacking structure includes a second cylinder and a transition plate; The transition plate is installed below the first cylinder, and the second cylinder is installed below the transition plate, and the second cylinder is used to provide power for lifting the expansion mechanism; The support column is installed between the transition plate and the tension block mounting plate, and the support column is used to support the expansion mechanism.

10. The expansion mechanism according to claim 8, characterized in that: The expansion mechanism further comprises: Linear bearings; The linear bearing is wrapped around the outside of the tapered shaft, and the linear bearing is used to make the tapered shaft move along the direction of the linear bearing.

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