Punching, pressing and pre-folding machine

Abstract

The utility model relates to the technical field of automatic card folding equipment, in particular to a punching, pressing and pre-folding machine which comprises a punching and pre-folding assembly which comprises a lower die structure, an upper die structure and a pre-folding piece. The lower die structure is fixedly mounted and is provided with a stock bin for placing materials; the upper die structure is arranged on the lower die structure and connected with a lifting driving piece, and a punching cutter and a line pressing cutter are further installed on the lower end face of the upper die structure; the pre-folding piece is arranged at the discharging end corresponding to the stock bin and connected with a pre-folding driving piece. According to the utility model, in the processes of punching, line pressing and pre-folding of paper products, a punching cutter, a line pressing cutter and a pre-folding piece are integrally arranged, punching and line pressing of materials are synchronously carried out, pre-folding action is rapidly completed when the materials do not completely flow out of the stock bin, and the integration degree of the whole structure is high; the process steps of the materials are completed in an extremely short moving line, the execution efficiency is high, and cost can be effectively controlled in the production and manufacturing process.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic card folding equipment, in particular to a punching and creasing pre-folding machine. Background Art

[0002] The process of preparing and forming packaging boxes generally includes cutting and folding of the box body, lining, handles and other parts. Based on the different packaging products, the shape, structural composition, forming method and folding method of the packaging box are also different. With the rapid development of the packaging field, traditional manual operations cannot achieve online operations, which leads to low efficiency, high cost, waste of materials, cumbersome material transportation, and large floor space. The disadvantages are gradually being overcome, so automated production lines are gradually born.

[0003] The research and development of automated production lines is based on the structural form of the product. The molding of the local connection structure of the paper handle in the existing packaging box generally involves processes such as loading, cutting, and pre-folding. The defects of automated equipment in the existing technology are:

[0004] First, the equipment has a low integration level, and each process requires different mechanisms to perform actions, so the floor space and cost cannot be effectively controlled;

[0005] Second, the incoming materials are prone to problems such as sticking, wrinkling, and deformation, and the yield rate is low.

[0006] Therefore, the utility model develops a punching and pressing line pre-folding machine to solve the problems existing in the prior art. Utility Model Content

[0007] The utility model aims to provide a punching and creasing pre-folding machine to solve the problems of low integration and low yield of paper product forming equipment in the prior art.

[0008] The technical solution of the utility model is: a punching and creasing pre-folding machine, including a punching and pre-folding component, the punching and pre-folding component includes:

[0009] A lower mold structure, which is fixedly installed and has a silo for placing materials;

[0010] An upper die structure, the upper die structure is placed on the lower die structure and is connected to a lifting drive member, and a punching tool and a crimping tool are also installed on the lower end surface of the upper die structure;

[0011] A pre-folding component is arranged at a discharge end corresponding to the silo and is connected to a pre-folding driving component.

[0012] Preferably, a pressing plate is connected below the upper die structure, and the pressing plate has a contoured cavity for the punching tool and the crimping tool to pass through;

[0013] The pressing plate is connected to the upper mold structure by a tie rod, the top of the tie rod is fixed to the upper mold structure, and the bottom passes through and supports the pressing plate; the tie rod is linked to the upper mold structure, and the lower mold structure has a cavity for accommodating the bottom of the tie rod.

[0014] Preferably, two rows of guide columns are fixed on the upper end surface of the lower mold structure, each row of guide columns is distributed parallel to the direction of material movement, and the material bin is formed between the two rows of guide columns;

[0015] The pressing plate is provided with an avoidance cavity for accommodating the top of the guide column.

[0016] Preferably, the lifting drive member is arranged below the lower mold structure, the fixed end of the lifting drive member is fixedly connected to the lower mold structure, and the movable end of the lifting drive member is connected to the upper mold structure through a plurality of guide rods.

[0017] Preferably, the outer wall surface of the pre-folding member which is biased toward one end of the upper mold structure is constructed as a pre-folding surface, and the pre-folding driving member drives the pre-folding member to move in a vertical direction.

[0018] Preferably, a feeding assembly is also provided on one side of the input end of the silo;

[0019] The feeding assembly comprises a feeding module along the material moving direction and a clamping module installed on the feeding module.

[0020] Preferably, the feeding module adopts a combination of a servo motor and a screw rod, and the length direction of the screw rod is parallel to the length direction of the silo; the clamping module includes a lower clamping plate fixedly connected to the output end of the screw rod, an upper clamping plate arranged above the lower clamping plate, and a clamping drive member that drives the upper clamping plate to move up and down.

[0021] Preferably, a flow guide component is further provided on the side of the feeding component that is biased toward the material feeding end;

[0022] The flow guide assembly includes a positioning flow channel and a guide wheel; the positioning flow channel and the material bin are used to accommodate long strip materials in the length direction, and the guide wheel is pressed on the material in the positioning flow channel.

[0023] Preferably, the axis of the guide wheel is horizontal and perpendicular to the length direction of the positioning flow channel; the guide wheel is connected to a drive motor and is installed on an adjustment seat, and the adjustment seat is adjusted by a clamping drive member.

[0024] Preferably, a guide bearing pressed onto the material is further provided in the positioning flow channel, the axis of the guide bearing is horizontal, and the middle part is penetrated and fixed by a fixed connecting rod.

[0025] Compared with the prior art, the advantages of the utility model are:

[0026] (1) During the punching, creasing and pre-folding process of paper products, the punching tool, creasing tool and pre-folding piece are integrated, the punching and creasing of materials are carried out simultaneously, and the pre-folding action is completed quickly before the material flows out of the silo completely. The overall structure has a high degree of integration; the material completes the process steps within an extremely short moving line, with high execution efficiency, and can effectively control costs during the production process.

[0027] (2) In order to further improve the degree of automation, a feeding component and a guide component are added to the front end of the stamping pre-folding component to ensure that materials can be continuously supplied to the stamping pre-folding component, thereby achieving work continuity and solving the current problem of low production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0029] Figure 1 This is a structural schematic diagram of the material forming process of the utility model;

[0030] Figure 2 It is a structural schematic diagram of a punching, creasing and pre-folding machine described in the utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the flow guide assembly of the utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the feeding assembly of the utility model;

[0033] Figure 5 It is a schematic diagram of the partial structure of the punching pre-folding assembly of the utility model;

[0034] Figure 6 It is a structural schematic diagram of the punching pre-folding assembly of the utility model;

[0035] Figure 7 It is a schematic diagram of the lower mold structure of the utility model;

[0036] Figure 8 It is a side view of the partial structure of the punching pre-folding assembly of the utility model;

[0037] Fig. 9 This is a schematic diagram of the material punching and pressing process described in the utility model;

[0038] Fig.10 It is a schematic diagram of the pressing plate and the lower mold structure of the utility model.

[0039] Among them: 1. diversion component;

[0040] 11. positioning flow channel, 111. lower bottom plate, 112. adjusting plate, 12. guide wheel, 121. adjusting seat, 13. guide bearing, 131. connecting rod, 14. elbow clamp;

[0041] 2. Feeding components;

[0042] 21. feeding module, 22. clamping module, 221. lower clamping plate, 222. upper clamping plate;

[0043] 3. Stamping pre-folding components;

[0044] 31. lower mold structure, 311. material bin, 312. guide column, 313. cavity;

[0045] 32. Upper die structure, 321. Punching tool, 3211. Arc end, 3212. Flat end, 322. Crimp tool;

[0046] 33. pre-folding member, 331. pre-folding driving member, 332. pre-folding surface;

[0047] 34, pressing plate, 341, contour cavity, 342, pull rod, 343, avoidance cavity;

[0048] 35. lifting drive member, 351. guide rod;

[0049] 36. Waste material outflow plate, 37. Finished product outflow plate. DETAILED DESCRIPTION

[0050] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0051] For ease of understanding, the application scenario of the present application is first described. In the process of preparing and forming a paper packaging box, a paper-plastic structure with a handle is involved, and paper accessories that need to be cut and pre-folded are involved. The main forming process is as follows: Figure 1 As shown, the material is in the form of a coil in the initial state, and then it is fed along the feeding direction, and the punching and pressing processes are completed to form Figure 1 In the state a shown in the figure, the material is a paper handle in the state a, with a curved cutting end and a pressing line structure formed in the middle; then it is pre-folded along the pressing line position to form Figure 1 The punching, creasing and pre-folding machine of the present application is used to perform the above-mentioned actions, which will be described in detail below.

[0052] like Figure 2 As shown, a punching, creasing and pre-folding machine comprises a flow guide component 1, a feeding component 2 and a punching and pre-folding component 3 which are sequentially arranged along the material moving direction.

[0053] Regarding the flow guide component 1, Figure 3As shown, it includes a positioning flow channel 11, a guide wheel 12 and a guide bearing 13.

[0054] The positioning channel 11 is formed by slotting a long strip of plate to accommodate the material and guide the material. Therefore, the width of the slot is the same as the width of the material, ensuring the straightness of the material during the feeding process, achieving efficient feeding, and avoiding bending and deformation of the material in the plane direction. In one embodiment, the positioning channel 11 can be formed by combining multiple fixedly connected plates, combined with Figure 3 As shown, it includes a lower bottom plate 111 and two adjustment plates 112. The two adjustment plates 112 are fixedly connected to the lower bottom plate 111, and a groove structure for accommodating materials is formed between the two adjustment plates 112. The advantage of this structural design is that when the width of the material changes, it is only necessary to adjust the distance between the two adjustment plates 112, and then a waist-shaped hole is opened on the adjustment plate 112 along the length direction perpendicular to the positioning channel 11, which is convenient for fixation after position adjustment.

[0055] In other embodiments, the positioning channel 11 may also be formed by integrally casting a plate, and the groove structure is then directly formed by casting.

[0056] The axis of the guide wheel 12 is arranged in the horizontal direction and is perpendicular to the length direction of the positioning channel 11; in one embodiment, the guide wheel 12 is directly mounted on the adjustment seat 121, and the adjustment seat 121 is adjusted by a clamping drive member, and the clamping drive member can adopt an elbow clamp 14, so that the guide wheel 12 is pressed on the material in the positioning channel 11; during the material supply process, the guide wheel 12 fits the material and rotates. During the process, the guide wheel 12 is mainly used to prevent the material from arching or deforming, and at the same time, combined with the feeding assembly 2 at the rear end, the material can be stretched. In other embodiments, the clamping drive member can also use a cylinder, which drives the guide wheel 12 on the adjustment seat 121 to be pressed on the material; the guide wheel 12 can also be connected to the drive motor and installed in combination on the adjustment seat 121, and the adjustment seat 121 is adjusted by the elbow clamp 14 so that the guide wheel 12 is pressed on the material in the positioning flow channel 11; during the material supply process, the guide wheel 12 driven by the drive motor assists in providing power for the material to move forward, while also preventing the material from arching or deforming, and can be combined with the clamping of the feeding component 2 to stretch the material.

[0057] The axis of the guide bearing 13 is arranged in the horizontal direction, and the middle part is penetrated and fixed by a fixed connecting rod 131, and the outer wall is pressed on the material in the positioning flow channel 11. During the process of the material moving forward, the outer ring of the guide bearing 13 rotates and always presses on the material, further avoiding the material at the corresponding position from being arched, deformed, wrinkled, etc. In one embodiment, as Figure 3As shown, two guide bearings 13 are provided, and are respectively provided on both sides of the guide wheel 12. In other embodiments, the number of guide bearings 13 is not limited, and they only need to be distributed along the length direction of the positioning flow channel 11.

[0058] Regarding the feeding component 2, as Figure 4 As shown, it includes a feeding module 21 along the material movement direction, and a clamping module 22 installed on the feeding module 21.

[0059] In one embodiment, the feeding module 21 uses a combination of a servo motor and a screw, and the length direction of the screw is parallel to the length direction of the positioning channel 11; in other embodiments, the feeding module 21 can also use a rodless cylinder, a piston telescopic cylinder, etc.

[0060] The clamping module 22 includes a lower clamping plate 221 fixedly connected to the output end of the feeding module 21, an upper clamping plate 222 arranged above the lower clamping plate 221, and a clamping drive member driving the upper clamping plate 222 to move up and down. The clamping drive member can be a clamping cylinder to drive the upper clamping plate 222 to approach the lower clamping plate 221 and clamp the material. It should be noted that the height of the material clamped by the upper clamping plate 222 and the lower clamping plate 221 is the same as the height of the material in the positioning flow channel 11, thereby ensuring that the material can always move at the same height to prevent deformation caused by different heights.

[0061] Regarding the punching pre-folding component 3, as Figure 5 , Figure 6 As shown, it includes a lower mold structure 31, an upper mold structure 32 and a pre-folded part 33.

[0062] The lower mold structure 31 is fixedly installed, such as Figure 7 As shown, the lower mold structure 31 has a material bin 311 for placing materials; the material bin 311 and the positioning flow channel 11 are aligned in the length direction.

[0063] Specifically, in one embodiment, the lower mold structure 31 is a flat plate-shaped structure, and its upper end face is the end face facing upward in the application scenario. Two rows of guide columns 312 are fixed to the upper end face, and a material bin 311 is formed between the two rows of guide columns 312; each row of guide columns 312 is distributed in a direction parallel to the material movement direction, and the two rows of guide columns 312 are arranged on both sides of the length direction of the material; the guide columns 312 are T-shaped columns that are small at the bottom and large at the top, and the small-sized column at the lower end of the guide column 312 is used to limit the outer wall of the material, and the large-sized column at the upper end of the guide column 312 is used to limit the upper end face of the material, thereby ensuring the accuracy of the material position during punching and pressing.

[0064] In other embodiments, guide structures of other shapes may be used, such as a plate with an inverted L-shaped cross-section, or a groove may be directly opened on the lower mold structure 31 to form the silo 311 .

[0065] The upper mold structure 32 is placed on the lower mold structure 31 and is connected to a lifting drive member 35 . A punching tool 321 and a crimping tool 322 are also installed on the lower end surface of the upper mold structure 32 .

[0066] Specifically, Figure 8 As shown, the punching tool 321 and the creasing tool 322 are distributed along the feeding direction of the material, and the punching and creasing operations are completed synchronously. Fig. 9 As shown, the punching tool 321 has a curved end 3211 and a flat end 3212, wherein the curved end 3211 is used to form a curved cutting end at the end of the paper handle, and the flat end 3212 is used to cut off waste materials at the curved structure. Fig. 9 The shaded area shown in the figure is the cut waste. The creasing cutter 322 directly applies force to the material, thereby forming a creasing line on the upper end surface of the material, which is convenient for subsequent pre-folding. After the punching and creasing are completed, the Figure 1 The paper handle in state a is shown in FIG.

[0067] It should be noted that the installation positions of the punching tool 321 and the crimping tool 322 cannot be opposite, otherwise both ends of the paper handle to be formed need to be cut with a tool, which not only increases the tool cost, but also requires consideration of issues such as installation and spatial layout; therefore, in the present application, the punching tool 321 and the crimping tool 322 are arranged along the feeding direction of the material. For example, the movement direction of the material is set from point A to point B, so the punching tool 321 is installed at a position biased towards point A, and the crimping tool 322 is installed at a position biased towards point B.

[0068] Combination Figure 6 As shown, the lifting drive member 35 is arranged below the lower mold structure 31, and adopts a telescopic cylinder. The fixed end of the lifting drive member 35 is fixedly connected to the lower mold structure 31, and the movable end of the lifting drive member 35 is connected to the upper mold structure 32 through a plurality of guide rods 351. In actual application scenarios, the guide rods 351 penetrate the mounting platform corresponding to the lower mold structure 31, and the guide rods 351 not only play a connecting role, but also ensure stability during the driving process.

[0069] A pressing plate 34 is also connected below the upper mold structure 32, and the pressing plate 34 is located between the upper mold structure 32 and the lower mold structure 31. Fig.10 As shown, the pressing plate 34 has a contoured cavity 341 for the punching tool 321 and the crimping tool 322 to pass through.

[0070] The pressing plate 34 is connected to the upper mold structure 32 by a plurality of tie rods 342. In actual application scenarios, each tie rod 342 is arranged longitudinally, the top of the tie rod 342 is fixed to the upper mold structure 32, and the bottom penetrates and supports the pressing plate 34; the tie rod 342 is linked to the upper mold structure 32, and the lower mold structure 31 has a cavity 313 for accommodating the bottom of the tie rod 342. In this application, directional words such as top and bottom are based on the corresponding directions in actual application scenarios.

[0071] In this embodiment, the pull rod 342 has no fixed connection with the pressing plate 34, ensuring that the pressing plate 34 can move with the upper mold structure 32 before contacting the material. After the pressing plate 34 contacts the material, the upper mold structure 32 can independently drive the punching tool 321 and the crimping tool 322 to continue to move downward, and the structure and spatial layout are reasonable. Figure 8 As shown, the tie rod 342 is in the shape of an inverted T-shaped column with a large bottom and a small top, and the pressing plate 34 is supported on the upper end surface of the large-sized column at the lower end. When the pressing plate 34 is pressed on the material, since the tie rod 342 needs to continue to move downward with the upper mold structure 32, the lower mold structure 31 must have a cavity for accommodating the bottom of the tie rod 342. At the same time, in order to ensure that the pressing plate 34 can smoothly fit the upper end surface of the material, the pressing plate 34 must also have an avoidance cavity 343 for accommodating the large-sized column at the upper end of the guide column 312.

[0072] In the present embodiment, a pressure plate 34 is provided between the upper mold structure 32 and the lower mold structure 31 to ensure the flatness of the material during the punching and creasing process. Regarding the installation of the pressure plate 34, a pull rod 342 is used for support, and the two have no fixed connection relationship, to ensure that the pressure plate 34 can move with the upper mold structure 32 before it contacts the material. After the pressure plate 34 contacts the material, the upper mold structure 32 can independently drive the punching tool 321 and the creasing tool 322 to continue to move downward, and the structure and spatial layout are reasonable.

[0073] like Figure 5 As shown, the pre-folding member 33 is disposed at the discharge end corresponding to the bin 311 and is connected to a pre-folding driving member 331. Figure 8As shown, the outer wall surface of the pre-folding member 33 at one end of the upper mold structure 32 is constructed as a pre-folding surface 332. The pre-folding surface 332 cooperates with the outer wall end surface of the end of the pressing plate 34. When the pre-folding member 33 moves, the relative positions of the pre-folding surface 332 and the outer wall end surface of the end of the pressing plate 34 change, driving the paper handle to deform, so that the deformed part of the paper handle is accommodated between the outer wall of the pressing plate 34 and the pre-folding surface 332, thereby realizing the pre-folding of the paper handle; the pre-folding drive member 331 drives the pre-folding member 33 to move in the vertical direction. In the initial state, the pre-folding member 33 is below the plane where the material is located. When the paper handle moves outward after punching and pressing, the pressing position is aligned with the pre-folding surface 332, and the movement stops. The pre-folding drive member 331 drives the pre-folding member 33 upward to realize the pre-folding of the paper handle to form a Figure 1 The b state shown in .

[0074] To sum up the above, in this embodiment, the pressing plate 34 is not only used to prevent the material from arching, deformation, tearing and other problems during punching and pressing, but also used to cooperate with the pre-folding part 33 to complete the pre-folding process. Regarding the installation of its structure, there is no fixed connection relationship, and the design is ingenious.

[0075] In this embodiment, the punching tool 321, the crimping tool 322, and the pre-folding part 33 are integrated, the punching and crimping of the material are carried out simultaneously, and the pre-folding action is completed quickly before the material flows out of the silo 311 completely. The overall structure has a high degree of integration; the material completes the process steps within an extremely short moving line, the execution efficiency is high, and the cost can be effectively controlled during the production process.

[0076] Since the final product and waste generated during the punching, creasing and pre-folding processes will be obtained, the punching and pre-folding assembly 3 also includes an inclined waste discharge plate 36 and a finished product discharge plate 37, wherein the feed inlet of the waste discharge plate 36 is directly below the punching tool 321, and the feed inlet of the finished product discharge plate 37 is directly below the pre-folded part 33.

[0077] In summary, the present application is mainly based on the punching, pressing and pre-folding actions of the stamping pre-folding component 3, but by adding a feeding component 2 and a guide component 1 at the front end of the stamping pre-folding component 3, it is ensured that the material can be continuously supplied to the stamping pre-folding component 3, thereby achieving the continuity of work and solving the current problem of low production efficiency.

[0078] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A punching and creasing pre-folding machine, characterized in that: It includes a punching pre-folding component, and the punching pre-folding component includes: A lower mold structure, which is fixedly installed and has a silo for placing materials; An upper die structure, the upper die structure is placed on the lower die structure and is connected to a lifting drive member, and a punching tool and a crimping tool are also installed on the lower end surface of the upper die structure; A pre-folding component is arranged at a discharge end corresponding to the silo and is connected to a pre-folding driving component.

2. A punching and creasing pre-folding machine according to claim 1, characterized in that: A pressing plate is also connected below the upper die structure, and the pressing plate has a contoured cavity for the punching tool and the crimping tool to penetrate; The pressing plate is connected to the upper mold structure by a tie rod, the top of the tie rod is fixed to the upper mold structure, and the bottom passes through and supports the pressing plate; the tie rod is linked to the upper mold structure, and the lower mold structure has a cavity for accommodating the bottom of the tie rod.

3. The punching and creasing pre-folding machine according to claim 2, characterized in that: Two rows of guide columns are fixed on the upper end surface of the lower mold structure, each row of guide columns is distributed parallel to the direction of material movement, and the material bin is formed between the two rows of guide columns; The pressing plate is provided with an avoidance cavity for accommodating the top of the guide column.

4. The punching and creasing pre-folding machine according to claim 2, characterized in that: The lifting drive member is arranged below the lower mold structure, the fixed end of the lifting drive member is fixedly connected to the lower mold structure, and the movable end of the lifting drive member is connected to the upper mold structure through a plurality of guide rods.

5. The punching and creasing pre-folding machine according to claim 2, characterized in that: The outer wall surface of the pre-folding member that is biased toward one end of the upper mold structure is configured as a pre-folding surface, and the pre-folding driving member drives the pre-folding member to move in a vertical direction.

6. A punching, creasing and pre-folding machine according to any one of claims 1 to 5, characterized in that: A feeding assembly is also provided on one side of the input end of the silo; The feeding assembly comprises a feeding module along the material moving direction and a clamping module installed on the feeding module.

7. The punching and creasing pre-folding machine according to claim 6, characterized in that: The feeding module adopts a combination of a servo motor and a screw rod, and the length direction of the screw rod is parallel to the length direction of the silo; the clamping module includes a lower clamping plate fixedly connected to the output end of the screw rod, an upper clamping plate arranged above the lower clamping plate, and a clamping drive member that drives the upper clamping plate to move up and down.

8. The punching and creasing pre-folding machine according to claim 6, characterized in that: A flow guide component is also provided on one side of the feeding component that is biased toward the material feeding end; The flow guide assembly includes a positioning flow channel and a guide wheel; the positioning flow channel and the material bin are used to accommodate long strip materials in the length direction, and the guide wheel is pressed on the material in the positioning flow channel.

9. The punching and creasing pre-folding machine according to claim 8, characterized in that: The axis of the guide wheel is horizontal and perpendicular to the length direction of the positioning flow channel; the guide wheel is connected to a driving motor and is installed on an adjustment seat, and the adjustment seat is adjusted by a pressing driving member.

10. A punching and creasing pre-folding machine according to claim 8 or 9, characterized in that: A guide bearing pressed onto the material is also provided in the positioning flow channel, the axis of the guide bearing is horizontal, and the middle part is penetrated and fixed by a fixed connecting rod.

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