Pressing method and blooming mechanism

Abstract

The application provides a pressing method and a structure for opening, which comprises the following steps: applying a counterforce to a pressing surface of a workpiece, so that the pressing surface is pressed at a first preset position under the counterforce; and applying a unidirectional force to a flexible surface of the workpiece, and supporting the flexible surface by the unidirectional force. The unidirectional force is a force applied from the inside of the workpiece to the outside. The structure comprises a power structure, a flexible pressure structure and an opening structure. The opening structure is moved to the pressing surface by power provided by the power structure, so that the opening structure stops at the first preset position. When the pressing surface is subjected to a second pressure, the opening structure is tightly attached to the pressing surface and provides a first pressure to the pressing surface. The flexible pressure structure is connected to the opening structure, and the opening structure applies the unidirectional force to the flexible surface of the workpiece through the flexible pressure structure. The pressing method and the structure for opening provided by the application can reduce the defective rate of the produced cartons by applying different types of forces in different directions.

Description

TECHNICAL FIELD

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

[0002] With the continuous development of science and technology, the quality of various products is also continuously improved. 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 can be understood that the paper box needs to hold the goods, and among the six faces of the paper box, one face must be open, and people can put the goods into the paper box through the open face. The paper box is processed by a workpiece with a pressing edge. The workpiece needs to be coated with glue on the pressing edge, and then the pressing edge needs to be buckled into the box body and subjected to a pressing glue process, so that the pressing edge is firmly attached to the box body. The pressing glue operation is generally the top surface, the pressing surface and the opposite surface of the pressing surface.

[0003] In the prior art, the paper box pressing glue device is composed of a solid block slightly smaller than the paper box, and the paper box is manually loaded by a gas cylinder. However, the existing pressing glue device has a high rate of defective paper boxes and low manual operation efficiency. Therefore, how to reduce the defective rate of the paper box produced by the pressing glue device and improve the automatic processing efficiency has become a technical problem that needs to be solved by the technical personnel in the field.

[0004] Through research, in order to avoid subsequent glue opening, the three faces mentioned above must have a larger pressing force, while the other two faces need to remain relatively free to prevent each face from being damaged by the pressing force. That is, a structure is needed during the pressing glue process to ensure that the top surface and the two side surfaces are subjected to double-sided rigid pressing force to ensure that the pressing edge can be attached to the box body, while the other two surfaces are subjected to single-sided flexible pressure to ensure that the box body is opened to make the face subjected to the rigid pressing force more closely attached to the tool providing the pressing force, thereby improving the attachment firmness. On the market, there is no structure that can meet the pressing glue requirements. SUMMARY

[0005] Based on the above problems, the present application provides a pressing method and an opening mechanism, which can reduce the defective rate of the paper box produced by the pressing glue device by applying different types of force to different sides of the paper box, and the automatic device can improve the production efficiency.

[0006] The present application provides a pressing method, which comprises:

[0007] Applying a counterforce to a pressing surface of a workpiece, the pressing surface being pressed at a first preset position by the counterforce, the workpiece being a box-shaped workpiece, the counterforce including a first pressure and a second pressure, one of the pressures being a force applied by an external device and the other being a reaction force, the first pressure being a force applied from inside to outside of the workpiece, and the second pressure being a force applied from outside to inside of the workpiece, a surface of an edge of a cover of the workpiece, which is glued and then buckled into a box body and contacts an inner wall of the box body, and a surface opposite to the surface being the pressing surface, and other surfaces of the workpiece, which are adjacent to the pressing surface, being flexible surfaces;

[0008] To facilitate operation and easy control of variables, preferably, the second pressure is a force applied from outside to inside of the workpiece, and the first pressure is a reaction force applied from inside to outside of the workpiece generated by the second pressure.

[0009] The external device can be selected from various devices capable of applying a force to the pressing surface, such as a cylinder, a motor driving a chain and gear structure, and the like.

[0010] Applying a one-way force to the flexible surface of the workpiece, and supporting the flexible surface by the one-way force, the one-way force being a force applied from inside to outside of the workpiece.

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

[0012] The tensioning block moves to the pressing surface and the flexible surface.

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

[0014] When the tensioning block is attached to the flexible surface, the tensioning block continues to displace in the direction of the one-way force and abuts against the flexible surface, thereby applying the one-way force to the flexible surface.

[0015] In a possible implementation, the one-way force is generated by an elastic force of an elastic member, and the elastic force of the elastic member causes the tensioning block to move in the direction of the one-way force to a second preset position.

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

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

[0018] The application also provides an opening mechanism, which comprises:

[0019] a power structure, a flexible pressure structure and an opening structure;

[0020] The opening structure is moved to the pressing surface by the power provided by the power structure, and stops at a first preset position. When the pressing surface is subjected to a second pressure, the opening structure is tightly attached to 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 surface of the box cover edge of the workpiece, after being coated with glue, is buckled into the box body and in contact with the inner wall of the box body and its opposite surface are the pressing surface. The other side surface of the workpiece in contact with the pressing surface is a flexible surface.

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

[0022] In a possible implementation, the opening structure comprises:

[0023] a tightening block and a reset structure;

[0024] The tightening block is used to move to the pressing surface and the flexible surface under the power provided by the power structure.

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

[0026] When the tightening block is attached to the flexible surface, the tightening block continues to displace in the direction of the unidirectional force and abuts against the flexible surface under the force provided by the flexible pressure structure, so as to apply the unidirectional force to the flexible surface.

[0027] The reset structure is used to make the opening structure retract to an unopened state under the action of the reset structure when the workpiece is processed.

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

[0029] a first spring, a wedge-shaped block and a connecting flange;

[0030] When the tightening block is attached to the flexible surface, the elastic force provided by the first spring makes the tightening block move to a preset position in the direction of the unidirectional force.

[0031] The wedge-shaped block is connected to the tightening block through the connecting flange.

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

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

[0034] A first cylinder and a conical shaft;

[0035] The output end of the first cylinder is connected with the conical shaft;

[0036] The expansion structure is provided with a conical surface matched with the conical shaft, and the conical shaft transmits power provided by the first cylinder to the expansion structure through cooperation with the conical surface.

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

[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 first linear guide rail is arranged on the guide rail mounting plate and is perpendicular to the pressing surface;

[0040] The guide rail transition plate is arranged on the first linear guide rail and is used for transitioning 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 perpendicular to the flexible surface;

[0042] The jacking structure is used for jacking up the expansion mechanism;

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

[0044] The transition plate is arranged below the first cylinder, the second cylinder is arranged below the transition plate, and the second cylinder is used for providing power for jacking up the expansion mechanism;

[0045] The support column is arranged between the transition plate and the expansion block mounting plate, and is used for supporting the expansion mechanism.

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

[0047] Linear bearing

[0048] The linear bearing is wrapped outside the conical shaft, and the linear bearing is used to move the conical shaft in the direction of the linear bearing.

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

[0050] The opening mechanism provided by the application comprises a power structure, a flexible pressure structure and an opening structure, and the opening mechanism can accurately control the type of force. In the background art, existing glue pressing devices usually rely on manual operation and simple cylinder control, resulting in only rigid pressing force, thereby causing uneven pressing, paper box opening and other problems. The opening mechanism of the application can accurately generate flexible force and rigid force through the flexible pressure structure and the opening structure, and the rigid surface can be subjected to rigid pressing force, and in the case of external force applied to the paper box, it can ensure that the pressing edge is firmly bonded with the box body. At the same time, the flexible surface is supported by the appropriate one-way force through the flexible pressure structure, preventing excessive pressure from damaging the structure of the paper box and avoiding the generation of defective products. Moreover, when the workpiece is processed by the opening mechanism provided by the application, the flexible surface is supported by the one-way force through the cooperation of the flexible pressure structure and the opening structure, and the pressing surface can be more firmly bonded through the support of the flexible surface. The opening mechanism provided by the application has strong adaptability compared with the prior art, and through the combination of the opening structure and the flexible pressure structure, the force can be adjusted in real time according to the changes of the paper box shape and the production requirements, avoiding the damage or deformation of the paper box caused by uneven pressing force in the traditional technology. This flexible adjustment capability greatly improves the reliability and stability in the production process. Secondly, compared with the complicated manual operation and simple cylinder control in the background technology, the structural design of the application makes the glue pressing process more automated, reducing the necessity of manual intervention, thereby greatly improving the production efficiency and consistency. This not only reduces the work intensity of manual operation, but also reduces human operation errors, further reduces the defective rate of paper boxes; also improves the adhesion degree of the pressing surface and the tightening block, further improves the adhesion firmness of the lid edge and the inside surface of the box body after the implementation of the opposite force on the pressing surface.

[0051] The pressing method provided by the application applies corresponding forces to different surfaces of the workpiece, applies a counterforce to the pressing surface of the workpiece, and applies a unidirectional force to the flexible surface of the workpiece. The counterforce applied includes a first pressure and a second pressure. It can be understood that the forces act on each other, and the reaction force generated when the second pressure acts on the pressing surface is the first pressure. The first pressure and the second pressure can act on the inner side and the outer side of the pressing surface respectively, so that the pressing surface can be bonded more firmly. At the same time, the flexible surface is supported by the flexible pressure structure to obtain a proper unidirectional force, which prevents the rigid pressure from damaging the structure of the carton and avoids the generation of defective products; and the adhesion degree of the pressing surface and the tensioning block is improved, and the adhesion firmness of the edge of the cover and the inner side of the box body after the counterforce is applied to the pressing surface is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0053] Figure 1 A flowchart of a pressing method provided by an embodiment of the present application;

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

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

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

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

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

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

[0060] Figure 8 A cross-sectional view of a tensioning mechanism provided by an embodiment of the present application;

[0061] Figure 9 Another cross-sectional view of a tensioning mechanism provided by an embodiment of the present application. DETAILED DESCRIPTION

[0062] As described above, the prior art paper box pressing device is composed of a solid block slightly smaller than the paper box, the paper box is put on manually, and the glue is pressed by a cylinder. However, the existing pressing device has a low yield of paper box.

[0063] It is found through research that, when the pressing device composed of the solid block presses the glue, the top surface and the four side surfaces of the workpiece will equally receive almost the same pressure. If a larger force is applied, although the top surface, the pressing surface and the opposite surface of the pressing surface are not easy to open the glue, the flexible surface is very easy to be damaged. If the damage of the flexible surface is taken into account, the top surface, the pressing surface and the opposite surface of the pressing surface will be very easy to open the glue, and the yield of the paper box is relatively high.

[0064] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0065] Figure 1 A flow chart of a pressing method provided by the embodiments of the present application, the pressing method comprises:

[0066] S101: applying a counterforce to the pressing surface of the workpiece, so that the pressing surface is pressed in a first preset position under the counterforce.

[0067] The counterforce is applied to the pressing surface of the workpiece, so that the pressing surface is pressed in a first preset position under the counterforce. In a possible implementation, the counterforce can be applied to the pressing surface of the workpiece by a device, for example, a clamping structure, which clamps the pressing surface to apply the counterforce. The counterforce includes a first pressure and a second pressure, one of which is the force applied by the external device, and the other is the reaction force. The first pressure is the force from the inside of the workpiece to the outside, and the second pressure is the force from the outside of the workpiece to the inside.

[0068] In another possible implementation, the counterforce can apply the second pressure by the device outside the workpiece, and the device inside the workpiece generates a reaction force to the outside of the workpiece under the action of the second pressure, which 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 the second pressure to the outside of the pressing surface of the workpiece from the outside of the workpiece, and the first device gives the inside of the pressing surface of the workpiece a reaction force under the action of the second pressure applied by the second device, which is the first pressure.

[0069] In another possible implementation, a fixed plate (second device) is placed outside the workpiece and adjacent to the pressing surface, and the first device inside the workpiece continuously moves outward and abuts against the pressing surface, and then a pushing force (first pressure) is generated from the inside to the outside of the pressing surface by further moving the first device, and then a second pressure is generated, which is the reaction force from the outside to the inside of the pressing surface of the fixed plate, and then the counterforce of the pressing surface is generated and the pressing effect is formed. The first device can be a specific structure of the opening mechanism described below, or 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, which can be any box-shaped workpiece, such as a rectangular workpiece and a hexagonal prism-shaped workpiece, etc. However, in production and life, the rectangular workpiece is mainly produced and used. The workpiece is a rectangular workpiece with a closed box cover, and the face of the box cover edge that is in contact with the inner wall of the box body after being glued and buckled into the box body and the opposite face are the pressing surfaces, and the other side of the workpiece abutting against the pressing surface is the flexible surface.

[0071] Next, taking the rectangular workpiece as an example, the pressing surface and the flexible surface are described in combination with the drawings, Figure 2 a workpiece provided by an embodiment of the present application, Figure 3 another workpiece provided by an embodiment of the present application. Figure 2 is a rectangular workpiece with a closed box cover, and in Figure 2 the box cover edge can be clearly seen, Figure 2 the pressing surface is marked in the figure, which is the face of the box cover edge that is in contact with the inner wall of the box body after being glued and buckled into the box body. In Figure 2 the other side of the workpiece abutting against the pressing surface is the flexible surface.

[0072] For ease of description, Figure 3 the pressing surface and the opposite face of the pressing surface are unfolded, Figure 3 five faces of the workpiece are marked in the figure, which are a box cover contact face, an opposite face of the box cover contact face, two flexible surfaces, and a top face. In Figure 3 the rectangular workpiece shown in the figure, when the box cover (top face) is closed, the box cover contact face is in contact with the box cover, and the face of the box cover edge that is in contact with the inner wall of the box body after being glued and buckled into the box body is the pressing surface, and the opposite face of the box cover contact face is also the pressing surface.

[0073] S102: A unidirectional force is applied 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, and the unidirectional force can be a force applied from the inside of the workpiece to the outside by a device inside the workpiece.

[0075] In one possible implementation, the first pressure and the one-way force are provided by the same tightening block. In this case, the tightening block can move towards the pressing surface and the flexible surface when the workpiece is being processed. When the displacement of the tightening block relative to the pressing surface reaches a preset value, the tightening block can stop moving in the first pressure direction. In one possible implementation, the preset value can be set according to the size of the workpiece. The larger the workpiece, the larger the preset value.

[0076] When the tightening block is in contact with the flexible surface, the tightening block continues to displace in the direction of the one-way force and abuts against the flexible surface to apply the one-way force to the flexible surface. It can be understood that the workpiece is an entirety. When the tightening block applies the one-way force to the flexible surface, the pressing surface of the workpiece can be more fully subjected to the counterforce, so that the workpiece is bonded more tightly through the counterforce, thereby preventing the workpiece from being opened during use, thereby reducing the rate of defective products.

[0077] The tightening block can support the flexible surface through the one-way force, so that the flexible surface will not be damaged.

[0078] Since the tightening block continues to displace in the direction of the one-way force and abuts against the flexible surface to apply the one-way force to the flexible surface, the one-way force can correct the flexible surface of the workpiece to a certain extent, and also improve the contact degree of the pressing surface with the tightening block, thereby further improving the bonding firmness of the edge of the box cover to the inner side of the box body after the counterforce is applied to the pressing surface.

[0079] For example, if there is a small depression on one flexible surface of the workpiece, the product produced without processing the depression will have a high probability of being a defective product. When the tightening block applies the one-way force to the flexible surface, the depression on the flexible surface can be repaired through the one-way force, thereby reducing the probability of the product being a defective product.

[0080] The one-way force can be generated by different devices, such as springs, rubbers, and inflation devices. In one possible implementation, the one-way force is generated by the elastic force of the elastic member. The elastic force provided by the elastic member causes the tightening block to move in the direction of the one-way force to a second preset position. In one possible implementation, the size of the second preset position can also be set according to the size of the workpiece in actual processing.

[0081] In order to better bond the glue applied on the workpiece, the counterforce can be applied to the box cover of the workpiece. In one possible implementation, when the pressing surface is subjected to the counterforce, the box cover of the workpiece is subjected to a box cover counterforce. The box cover counterforce 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 pressing method provided in this application applies corresponding forces to different surfaces of the workpiece, applying counterforce to the pressing surface and unidirectional force to the flexible surface. The applied counterforce includes a first pressure and a second pressure. It is understood that the forces are mutual; the reaction force generated when the second pressure acts on the pressing surface is the first pressure. The first and second pressures can act on the inner and outer sides of the pressing surface, respectively, allowing for a stronger bond. Simultaneously, the flexible surface receives appropriate unidirectional force support through the flexible pressure structure, preventing excessive pressure from damaging the carton's structure and avoiding defective products. It also improves the adhesion between the pressing surface and the tensioning block, further enhancing the bonding strength between the lid edge and the inner surface of the box after the counterforce is applied to the pressing surface.

[0083] Figure 4 This application provides an overall structural diagram of an expansion mechanism in its retracted state. Figure 5 This application provides an overall structural diagram of an expansion mechanism in its expanded state.

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

[0085] Figure 4 and Figure 5 It includes a power structure 100 and an expansion structure 200. Because the flexible pressure structure is connected to the expansion structure, in... Figure 4 In the overall structural diagram of the expansion mechanism in its retracted state, the flexible pressure structure cannot be shown in the overall diagram. The flexible pressure structure will be described in detail in the cross-sectional diagram below.

[0086] The expansion structure 200 moves towards the pressing surface via the power provided by the power structure 100, stopping at a first preset position. When the pressing surface is subjected to a second pressure, the expansion structure 200 presses against the pressing surface and generates a first pressure on it. The workpiece is a box-shaped workpiece. The second pressure is a force applied from the outside of the workpiece to the inside. The surface of the workpiece's lid edge, after being glued and fastened into the box body, that contacts the inner wall of the box body and its opposite side is the pressing surface. The other sides of the workpiece that contact the pressing surface are flexible surfaces. For a detailed description of the pressing surface and the flexible surface, please refer to [link to relevant documentation]. Figure 2 and Figure 3 The details of that part will not be elaborated here.

[0087] The flexible pressure structure and the expansion structure 200 are connected, 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 the open state of the opening mechanism provided in the present application, Figure 7 A vertical cross-sectional view of the retracted state of the opening mechanism provided in the present application, Figure 6 and Figure 7 comprise:

[0089] a power structure, a flexible pressure structure and an opening structure;

[0090] The power structure comprises a first cylinder 3 and a conical shaft 4.

[0091] The output end of the first cylinder 3 is connected with the conical shaft 4, and the first cylinder 3 is used to provide power for the opening mechanism. The opening structure is provided with a conical surface matched with the conical shaft, and the conical shaft 4 transmits the power provided by the first cylinder 3 to the opening structure through the matching with the conical surface. The cylinder refers to a cylindrical metal machine part that guides the piston to perform linear reciprocating motion in the cylinder. Air in the cylinder converts heat energy into mechanical energy through expansion.

[0092] The tightening block 11 is used to move towards the pressure surface and the flexible surface under the power provided by the power structure. Specifically, the power provided by the first cylinder 3 pushes the conical shaft 4 to rise, and the conical shaft 4 pushes the tightening block 11 to move towards the pressure surface and the flexible surface through the matching with the conical surface.

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

[0094] When the tightening block 11 adheres to the flexible surface, the tightening block 11 continues to displace in the direction of the one-way force and abuts against the flexible surface through the force provided by the flexible pressure structure, and applies the one-way force to the flexible surface.

[0095] In a possible implementation, the flexible pressure structure comprises a first spring 13, a wedge-shaped block 12 and a connecting flange. Since the connecting flange is not good Figure 6 and Figure 7 are shown, the connecting flange will be introduced in the cross-sectional view in the following.

[0096] In a possible implementation, when the tightening block 11 adheres to the flexible surface, the elastic force provided by the first spring 13 makes the tightening block 11 move to a preset position in the direction of the one-way force. The preset position can be set according to the actual production situation.

[0097] The wedge-shaped block 13 is connected with the tightening block 11 through the connecting flange;

[0098] The wedge-shaped block 13 and the connecting flange are provided with a first spring 13, the wedge-shaped block 13 is used to transmit the power provided by the power structure to the first spring 13 to make the first spring 13 deform, the first spring 13 applies an elastic force to the tensioning block 11 through the connecting flange, the connecting flange applies the elastic force to the tensioning block 11, so that the tensioning block 11 applies a one-way force to the flexible surface of the workpiece through the elastic force.

[0099] In a possible implementation, the tensioning structure includes a reset structure 14, the reset structure 14 is used to make the tensioning structure retract to the un-tensioned state under the action of the reset structure when the workpiece is processed.

[0100] The tensioning structure can 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 jacking structure, and a support column 7.

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

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

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

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

[0105] In a possible implementation, the tensioning 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 tensioning mechanism.

[0106] In a possible implementation, the tensioning mechanism can include a linear bearing 5, the linear bearing 5 is wrapped outside the tapered shaft 4, and the linear bearing 5 is used to make the tapered shaft 4 move in the direction of the linear bearing.

[0107] When the workpiece is processed, the power provided by the first cylinder 3 makes the conical shaft 4 rise, and the rising of the conical shaft 4 pushes the conical surface to make the expansion block 11 expand. The conical shaft 4 simultaneously pushes the wedge-shaped side of the guide rail transition plate 9 and the wedge-shaped block 12, so that the expansion block 11 can move to the pressing surface and the flexible surface at the same time. When the expansion block 11 reaches the first preset position and the expansion block 11 abuts against the flexible surface, the expansion block 11 can support the flexible surface, so as to support the workpiece. Since the one-way force of the expansion block 11 supporting the flexible surface is provided by the first spring 13, the one-way force of the expansion block 11 supporting the flexible surface belongs to the flexible force and will not cause damage to the flexible surface.

[0108] Figure 8 A cross-sectional view of an expansion mechanism provided by the present application, Figure 9 A cross-sectional view of another expansion mechanism provided by the present application, Figure 8 and Figure 9 are cross-sectional views taken at different horizontal planes, and Figure 8 and Figure 9 include:

[0109] The conical shaft 4, the guide rail mounting plate 6, the guide rail transition plate 9, the wedge-shaped block 12, the first spring 13, the reset structure 14, the wedge-shaped structure 15 and the connecting stop edge 16. In Figure 8 and Figure 9 , the reset structure 14 is a spring.

[0110] The guide rail transition plate 9 carries the wedge-shaped structure 15, and the wedge-shaped block 12 is connected with the expansion block 11 through the connecting stop edge 16.

[0111] In a possible implementation, when the expansion mechanism expands, the conical shaft 4 rises by the power provided by the first cylinder 3, the guide rail transition plate 9 carries the wedge-shaped side, and when the conical shaft 4 rises, the conical shaft 4 touches the wedge-shaped side of the guide rail transition plate 9, so as to push the expansion block 11 to move under the guidance of the first linear guide rail 8.

[0112] When the conical shaft 4 rises, the conical shaft 4 touches the wedge-shaped block 12, so as to push the expansion block 11 to move under the guidance of the second linear guide rail 10.

[0113] The wedge-shaped block 12 applies an elastic force to the tensioning block 11 through the first spring 13 and the connecting flange 16, and the tensioning block 11 applies a one-way force to the flexible surface through the elastic force. In this embodiment, a square box body is taken as an example, four tensioning blocks 11 are selected and arranged, the tensioning blocks 11 are moved apart by the first air cylinder 3, each tensioning block 11 moves towards one corner of the box body, and then the tensioning block 11 reaches the preset position of the pressing surface, at this time the tensioning block supports the adjacent flexible surface, and finally an external force is applied to implement a counterforce on the pressing surface for pressing work. The external force can be applied in various forms, for example, a pressing plate connected with the air cylinder applies force to the pressing surface, or a motor drives a chain wheel structure to make the pressing plate connected with the chain move until the pressing plate applies pressure to the pressing surface.

[0114] The opening mechanism provided by the present application comprises a power structure, a flexible pressure structure and an opening structure, and the opening mechanism can accurately control the type of force. In the background art, the existing glue pressing device usually relies on manual operation and simple cylinder control, resulting in only rigid pressing force, thereby causing uneven pressing, paper box opening and other problems. The opening mechanism of the present application can accurately generate flexible force and rigid force through the flexible pressure structure and the opening structure, and the rigid surface can be subjected to rigid pressing force, and in the case of external force applied to the paper box, it can ensure that the pressing edge is firmly bonded with the box body. At the same time, the flexible surface is supported by the appropriate one-way force through the flexible pressure structure, preventing excessive pressure from damaging the structure of the paper box and avoiding the generation of defective products. Moreover, when the workpiece is processed by the opening mechanism provided by the present application, the flexible surface is supported by the one-way force through the cooperation of the flexible pressure structure and the opening structure, and the pressing surface can be more firmly bonded through the support of the flexible surface. The opening mechanism provided by the present application has strong adaptability compared with the prior art, and through the combination of the opening structure and the flexible pressure structure, the force can be adjusted in real time according to the changes of the paper box shape and production requirements, avoiding the damage or deformation of the paper box caused by uneven pressing force in the traditional technology. This flexible adjustment capability greatly improves the reliability and stability in the production process. Secondly, compared with the complicated manual operation and simple cylinder control in the background technology, the structural design of the present application makes the glue pressing process more automated, reducing the necessity of manual intervention, thereby greatly improving the production efficiency and consistency. This not only reduces the work intensity of manual operation, but also reduces human operation errors, further reducing the defective rate of paper boxes.

[0115] It should be noted that each of the embodiments of the present specification is described in a progressive manner, and the same or similar parts between the embodiments can be mutually referred to, and each of the embodiments focuses on the differences from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, they are described more simply, and the relevant parts can be referred to the part of the description of the method embodiments. The above-described device embodiments are only illustrative, and the units described as separate components can or can not be physically separated, and the components indicated as units can or can not be physical units, that is, they can be located in one place, or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiments according to the actual needs. Those skilled in the art can understand and implement it without creative labor.

[0116] The above describes only one specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pressing method, characterized in that, include: A counterforce is applied to the pressing surface of the workpiece, causing the pressing surface to be pressed into a first preset position by the counterforce. The workpiece is a box-shaped workpiece. The counterforce 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 surface of the workpiece's lid, after being glued and fastened into the box body and in contact with the inner wall of the box body, and the opposite side thereof, are the pressing surfaces. The other sides of the workpiece that are in contact with the pressing surfaces are flexible surfaces. A unidirectional force is applied to the flexible surface of the workpiece to support the flexible surface. The unidirectional force is a force applied from the inside of the workpiece to the outside. The first pressure and the unidirectional force are provided by a tensioning block, and the method further includes: The tensioning block moves toward the pressing surface and the flexible surface; When the displacement of the tensioning block relative to the pressing surface reaches a preset value, the tensioning block stops moving in the first pressure direction; When the tensioning block is in contact with the flexible surface, the tensioning 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 of the workpiece to the inside, and the first pressure is a reaction force from the inside of the workpiece to the outside generated by the application of the second pressure; The method further includes: When the pressing surface is subjected to the opposing force, the lid of the workpiece is subjected to the opposing force of the lid. The opposing force of the lid 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 of the workpiece to the outside, and the fourth pressure is a force from the outside of the workpiece to the inside.

2. The method according to claim 1, characterized in that, The first pressure and the unidirectional force are provided by the same tensioning block.

3. The method according to claim 2, characterized in that, 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 tensioning block to move to the second preset position in the direction of the unidirectional force.

4. An expansion mechanism, characterized in that, include: Dynamic structure, flexible pressure structure and expansion structure; The expansion structure moves toward the pressing surface by the power provided by the power structure, and stops at the first preset position. When the pressing surface is subjected to the second pressure, the expansion structure adheres to the pressing surface and generates the first pressure on the pressing surface. The workpiece is a box-shaped workpiece. The second pressure is a force applied from the outside of the workpiece to the inside. The edge of the workpiece's lid is glued and then snapped into the box body and contacts the inner wall of the box body. The surface opposite to it is the pressing surface. The other sides of the workpiece that contact the pressing surface are flexible surfaces. The flexible pressure structure and the expansion structure are connected, and the expansion structure applies a unidirectional force to the flexible surface of the workpiece through the flexible pressure structure; The expansion structure includes: Tensioner block and reset structure; The tensioning block is used to move towards the pressing surface and the flexible surface under the power provided by the power structure; When the displacement of the tensioning block relative to the pressing surface reaches a preset value, the tensioning block stops moving in the first pressure direction; When the tensioning block is in contact with the flexible surface, the tensioning block continues to move in the direction of the unidirectional force by the force provided by the flexible pressure structure and presses against the flexible surface, thus applying the unidirectional force to the flexible surface; The reset structure is used to cause the expanded structure to retract into an unexpanded state under the action of the reset structure when the workpiece is processed.

5. The expansion mechanism according to claim 4, characterized in that, The flexible pressure structure includes: First spring, wedge block, and connecting stop; When the tensioning block is in contact with the flexible surface, the elastic force provided by the first spring causes the tensioning block to move to a preset position in the direction of the unidirectional force; The wedge block is connected to the tensioning block via a connecting flange; The first spring is disposed between the wedge block and the connecting stop. The wedge block is used to transmit the power provided by the power structure to the first spring to cause the first spring to deform. The first spring applies an elastic force to the tensioning block through the connecting stop. The connecting stop 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.

6. The expansion mechanism according to claim 4, characterized in that, The power structure includes: First cylinder and conical shaft; The output end of the first cylinder is connected to the conical shaft; The expansion structure is provided with a tapered surface that mates with the tapered shaft. The tapered shaft transmits the power provided by the first cylinder to the expansion structure through the mate with the tapered surface.

7. The expansion mechanism according to claim 6, characterized in that, The expansion structure includes: Guide rail mounting plate, first linear guide rail, guide rail transition plate, second linear guide rail, lifting structure and support column; The first linear guide rail is provided on the guide rail mounting plate, 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 to transition between the first linear guide rail and the second linear guide rail; The second linear guide rail is provided 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 the expansion mechanism; The lifting 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. The second cylinder is used to provide power for lifting the expansion mechanism. The support column is installed between the transition plate and the mounting plate of the tensioning block, and the support column is used to support the expansion mechanism.

8. The expansion mechanism according to claim 6, characterized in that, The expansion mechanism further includes: Linear bearings; The linear bearing is wrapped around the outside of the tapered shaft, and the linear bearing is used to move the tapered shaft in the direction of the linear bearing.

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