Paperboard line touching machine for packaging carton production
By using a detachable blade design and a dual-limiting structure, the problem of difficult quick replacement of traditional crimping knives and crimping position deviation caused by a single limit is solved, thus achieving efficient maintenance and improved safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI POLY HUAYING PACKAGING CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional fixed crimping knives are difficult to replace quickly after wear, requiring professional personnel to disassemble the entire machine, which affects production efficiency. Existing equipment uses a single limiting structure, which is susceptible to vibration and high-speed operation, causing blade displacement, resulting in crimping position deviation and safety hazards.
It adopts a detachable blade design and a double limiting structure. The connecting frame is driven by a cylinder to move the crimping knife. Combined with the double constraints of the limiting block and the clamping block, it ensures the precise positioning of the crimping knife in the horizontal and vertical directions. When disassembly is required, it can be quickly disassembled by the cooperation of the limiting block and the lead screw.
It improves the ease of equipment maintenance and safety, reduces equipment downtime, enhances crimping accuracy and production flexibility, avoids the risk of blade detachment, and strengthens operational safety.
Smart Images
Figure CN224256186U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging carton production technology, and in particular to a cardboard crimping machine for packaging carton production. Background Technology
[0002] The cardboard creasing machine for packaging cartons is a key piece of equipment in the packaging industry for achieving efficient carton forming. It creasing the cardboard to allow it to fold along predetermined lines. In actual production, a cardboard creasing machine typically consists of core components such as a paper feeding mechanism, a creasing mechanism, a transmission system, and a control system.
[0003] 1. The paper feeding mechanism uses components such as conveyor belts and paper feeding wheels to stably transport the cardboard to the creasing station;
[0004] 2. The creasing mechanism, as the core execution unit, uses creasing knives to perform creasing operations on the cardboard;
[0005] 3. The transmission system uses gears, chains, or belts to provide power to all components of the equipment;
[0006] 4. The control system uses a PLC or touch screen to precisely adjust parameters such as paper feeding speed and creasing depth.
[0007] Currently, to meet the production needs of packaging cartons, the industry has made various technological improvements to cardboard crimping machines. Some manufacturers use highly automated single-gantry crimping machines to reduce costs by simplifying the structure; others use double-gantry crimping machines to improve crimping efficiency and stability; and still others have launched fully automatic crimping machines, achieving full automation from paper feeding to crimping.
[0008] However, the above implementation still has the following problems. In terms of blade maintenance, traditional fixed creasing knives are difficult to replace quickly after wear, requiring professional personnel to disassemble the entire machine, resulting in long downtime and affecting production efficiency. In terms of creasing accuracy control, existing equipment mostly uses a single limiting structure to fix the blade, which is easily affected by factors such as vibration and high-speed operation, causing the blade to shift, resulting in creasing position deviation, and causing quality problems such as poor carton folding and bursting. In addition, if the single limiting device becomes loose, there is also a safety hazard of the blade falling off. To solve the above problems, this equipment adopts a detachable blade design and a double limiting design, which effectively improves the equipment's maintenance convenience, production flexibility, creasing accuracy and safety. Utility Model Content
[0009] To address the shortcomings of existing technologies, this utility model provides a cardboard creasing machine for packaging carton production. It solves the problem that traditional fixed creasing knives are difficult to replace quickly after wear, requiring professional personnel to disassemble the entire machine, resulting in long downtime and reduced production efficiency. In terms of creasing accuracy control, existing equipment mostly uses a single limiting structure to fix the blade, which is easily affected by factors such as vibration and high-speed operation, causing the blade to shift and resulting in creasing position deviation.
[0010] To achieve the above objectives, this utility model provides the following technical solution:
[0011] A cardboard creasing machine for producing packaging cartons includes a machine body, a fixed plate inside the machine body, a connecting frame inside the fixed plate, a creasing knife movably engaged inside the connecting frame, a lead screw rotatably connected inside the creasing knife, two clamping blocks movably connected inside the creasing knife, a limit block movably engaged inside the connecting frame, a return spring fixedly connected to the upper surface of the limit block, and a cylinder fixedly mounted on the upper surface of the fixed plate, the piston of the cylinder being fixedly connected to the creasing knife.
[0012] Preferably, the upper surface of the crimping knife has two sliding grooves, which are movably connected to two clamping blocks respectively. Both clamping blocks are threadedly connected to the lead screw. Limiting grooves are provided on both the left and right sides of the connecting frame, and the two limiting grooves are movably engaged with the two clamping blocks respectively.
[0013] Preferably, the connecting frame has a rectangular groove, which is movably engaged with the limiting block. The reset spring is fixedly connected to the rectangular groove. A push block is fixedly connected to the front surface of the limiting block. The upper surface of the pressure knife has a slot, which is movably engaged with the limiting block.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. Pulling the push block moves the fixed limit block together, compressing the return spring. At this time, the limit block will disengage from the slot on the crimping knife, opening the limit. Then, by rotating the screw, the two clamping blocks sleeved on it move in opposite directions under the action of the threads, thus disengaging from the two limit slots on the connecting frame and opening the limit. At this time, the crimping knife can be disassembled. When maintaining a fixed crimping knife, close contact with sharp parts is required, which poses a risk of scratches. The detachable design allows the entire blade assembly to be disassembled to a safe area for maintenance, reducing direct contact between operators and dangerous parts and improving workshop safety.
[0016] 2. The crimping knife is double-constrained by a limit block and two clamping blocks to ensure that it is accurately positioned in both the horizontal and vertical directions. This solves the shortcomings of a single limit in terms of accuracy, stability and safety. The double limit is redundantly designed so that even if one limit fails, the other can still keep the blade fixed and avoid the risk of falling off. Attached Figure Description
[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0018] Figure 1 This is an overall structural diagram of the present invention;
[0019] Figure 2 This is an overall plan view of the present invention;
[0020] Figure 3 This is a structural diagram of the fixing plate of this utility model;
[0021] Figure 4 This is a structural diagram of the connecting frame of this utility model.
[0022] Legend: 1. Body; 2. Fixing plate; 3. Cylinder; 4. Wire pressing knife; 5. Connecting frame; 6. Lead screw; 7. Clamping block; 8. Slot; 9. Slide groove; 10. Limiting groove; 11. Rectangular groove; 12. Return spring; 13. Push block; 14. Limiting block. Detailed Implementation
[0023] This application provides a cardboard creasing machine for packaging carton production, which effectively solves the problems of traditional fixed creasing knives being difficult to replace quickly after wear, requiring professional personnel to disassemble the entire machine, resulting in long downtime and affecting production efficiency. In terms of creasing accuracy control, existing equipment mostly uses a single limiting structure to fix the blade, which is easily affected by factors such as vibration and high-speed operation, causing the blade to shift and resulting in creasing position deviation. This equipment adopts a detachable blade design and a double limiting design, which effectively improves the ease of maintenance, production flexibility, creasing accuracy and safety of the equipment.
[0024] Example
[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application effectively solves the problem that traditional fixed crimping knives are difficult to replace quickly after wear, requiring professional personnel to disassemble the entire machine, resulting in long downtime and reduced production efficiency. Regarding crimping accuracy control, existing equipment often uses a single limiting structure to fix the blade, which is easily affected by vibration, high-speed operation, and other factors, leading to blade displacement and crimping position deviation. The overall approach is as follows:
[0026] To address the problems existing in the prior art, this utility model provides a cardboard creasing machine for packaging carton production, including a machine body 1. A fixed plate 2 is installed inside the machine body 1, and a connecting frame 5 is installed inside the fixed plate 2. A creasing knife 4 is movably engaged within the connecting frame 5. A lead screw 6 is rotatably connected inside the creasing knife 4, and two clamping blocks 7 are movably connected inside the creasing knife 4. A limit block 14 is movably engaged within the connecting frame 5, and a return spring 12 is fixedly connected to the upper surface of the limit block 14. A cylinder 3 is fixedly installed on the upper surface of the fixed plate 2, and the piston of the cylinder 3 is fixedly connected to the creasing knife 4. During use, starting the cylinder 3 moves the fixed connecting frame 5, which in turn moves the engaged creasing knife 4. The creasing knife 4 creasing the cardboard, forming creases on the cardboard, which facilitates subsequent folding and shaping of the cardboard. In the molding process, it can be folded according to the predetermined fold line. The crimping knife 4 and the connecting frame 5 are combined. When it is necessary to disassemble the crimping knife 4, the push block 13 needs to be pulled to move the fixed limit block 14 together, which compresses the return spring 12. At this time, the limit block 14 will disengage from the slot 8 opened on the crimping knife 4 and open the limit. At this time, by rotating the screw 6, the two clamping blocks 7 sleeved on it will move in opposite directions under the action of the thread, thereby disengaging from the two limit slots 10 opened on the connecting frame 5 and opening the limit. At this time, the crimping knife 4 can be disassembled. When maintaining the fixed crimping knife 4, it is necessary to have close contact with the sharp parts, which poses a risk of scratches. The detachable design supports the overall disassembly of the blade assembly to a safe area for maintenance, reducing the direct contact between operators and dangerous parts and improving workshop safety.
[0027] The upper surface of the crimping knife 4 has two sliding grooves 9, which are movably connected to two clamping blocks 7 respectively. Both clamping blocks 7 are threadedly connected to the lead screw 6. Limiting grooves 10 are provided on both the left and right sides of the connecting frame 5. The two limiting grooves 10 are movably engaged with the two clamping blocks 7 respectively. A rectangular groove 11 is provided inside the connecting frame 5. The rectangular groove 11 is movably engaged with the limiting block 14. The return spring 12 is fixedly connected to the rectangular groove 11. A push block 13 is fixedly connected to the front surface of the limiting block 14. A slot 8 is provided on the upper surface of the crimping knife 4. The slot 8 is movably engaged with the limiting block 14. The crimping knife 4 is doubly constrained by the limiting block 14 and the two clamping blocks 7 to ensure that it is accurately positioned in both the horizontal and vertical directions. This solves the shortcomings of single limiting in terms of accuracy, stability and safety. The double limiting is redundantly designed so that even if one limiting fails, the other can still keep the blade fixed and avoid the risk of falling off.
[0028] Among them, the main body 1 serves as the main body of the equipment, providing installation support space for various components such as the fixing plate 2, forming the basic framework of the cardboard crimping machine, and ensuring the orderly combination of various components and the overall stable operation;
[0029] Fixed plate 2: Installed inside the machine body 1, used to fix components such as cylinder 3, provide reference support for the movement of connecting frame 5, etc., and ensure the accurate installation position of the wire pressing mechanism;
[0030] Cylinder 3: Fixed on the fixed plate 2, it drives the connecting frame 5 and the creasing knife 4 to move through the piston movement, so as to realize the power output of the creasing knife 4 to creasing the cardboard;
[0031] Creasing knife 4: The core execution component, which is snapped into the connecting frame 5. Under the drive of the cylinder 3, it forms creases on the cardboard. Its detachable design makes it easy to maintain and replace.
[0032] Connecting frame 5: Located inside the fixed plate 2, it is movably engaged with the crimping knife 4. Under the action of the cylinder 3, it drives the crimping knife 4 to move. At the same time, it cooperates with the clamping block 7 through the limiting groove 10 to achieve double limiting.
[0033] Lead screw 6: Rotatably connected to the wire pressing knife 4, it drives the two clamping blocks 7 to move in opposite directions or towards each other through the thread action, so as to achieve engagement or disengagement with the upper limit groove 10 of the connecting frame 5, and assist in the disassembly and installation of the wire pressing knife 4;
[0034] Clamping block 7: It is movably connected inside the crimping knife 4 and threadedly connected to the lead screw 6. After moving, it engages with the limiting groove 10 of the connecting frame 5, forming a double limiting constraint on the horizontal direction of the crimping knife 4.
[0035] Slot 8: It is formed on the upper surface of the crimping knife 4 and engages with the limiting block 14 to form a double limiting constraint on the vertical direction of the crimping knife 4, ensuring its accurate positioning;
[0036] Slide groove 9: Located on the upper surface of the crimping knife 4, it is movably connected to the clamping block 7, providing a guide path for the movement of the clamping block 7 and ensuring that it slides in a predetermined direction to achieve the limiting function;
[0037] Limiting groove 10: Located on the left and right sides of the connecting frame 5, it is movably engaged with the clamping block 7. Through the clamping action of the clamping block 7, the horizontal displacement of the wire pressing knife 4 is limited, thereby improving the positioning accuracy.
[0038] Rectangular groove 11: It is opened in the connecting frame 5 and is movably engaged with the limiting block 14, providing space for the movement of the limiting block 14 so that it can cooperate with the slot 8 of the wire pressing knife 4 to achieve vertical limiting;
[0039] Reset spring 12: It is fixedly connected to the rectangular groove 11 and connected to the limit block 14. After the push block 13 pulls the limit block 14 to move, it provides a reset spring force to ensure that the limit block 14 and the slot 8 are stably engaged.
[0040] Push block 13: Fixed to the front surface of limit block 14, making it easy for the operator to manually pull the limit block 14 to move, release the limit block 14 from the slot 8, and facilitate the disassembly of the wire pressing knife 4;
[0041] Limiting block 14: It is movable and snapped into the connecting frame 5. It engages with the slot 8 of the wire pressing knife 4 to form a vertical constraint in the double limiting, preventing the wire pressing knife 4 from moving up and down.
[0042] Working principle:
[0043] During use, the cylinder 3 drives the fixed connecting frame 5 to move. The movement of the connecting frame 5 moves the clamped creasing knife 4 together, which in turn crimps the cardboard, creating fold lines. This allows the cardboard to be folded along the predetermined fold lines in subsequent folding and forming processes. The creasing knife 4 and the connecting frame 5 are a combined design. When the creasing knife 4 needs to be disassembled, the push block 13 is pulled to move the fixed limiting block 14 together, compressing the return spring 12. At this time, the limiting block 14 will disengage from the slot 8 on the creasing knife 4, opening the limit. Then, by rotating the screw 6, the two clamping blocks 7 sleeved on it will move in opposite directions due to the thread action. The blade moves and disengages from the two limiting slots 10 on the connecting frame 5, opening the limit. At this point, the crimping knife 4 can be disassembled. When maintaining the fixed crimping knife 4, close contact with sharp parts is required, posing a risk of scratches. The detachable design allows for the complete disassembly of the blade assembly to a safe area for maintenance, reducing direct contact between operators and dangerous parts and improving workshop safety. The crimping knife 4 is doubly constrained by the limiting block 14 and two clamping blocks 7, ensuring that it is accurately positioned in both the horizontal and vertical directions. This solves the shortcomings of a single limit in terms of accuracy, stability, and safety. The double limit, through redundant design, ensures that even if one limit fails, the other can still keep the blade fixed, avoiding the risk of falling off.
[0044] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A cardboard crimping machine for producing packaging cartons, comprising a machine body (1), characterized in that, The machine body (1) is provided with a fixing plate (2), the fixing plate (2) is provided with a connecting frame (5), the connecting frame (5) is movably connected with a wire pressing knife (4), and the wire pressing knife (4) is rotatably connected with a lead screw (6). The wire pressing knife (4) has two clamping blocks (7) connected to it, and the connecting frame (5) has a limit block (14) that is movably engaged. The upper surface of the limit block (14) is fixedly connected with a reset spring (12).
2. The cardboard crimping machine for producing packaging cartons as described in claim 1, characterized in that: A cylinder (3) is fixedly installed on the upper surface of the fixing plate (2); The piston of the cylinder (3) is fixedly connected to the wire pressing knife (4).
3. The cardboard crimping machine for producing packaging cartons as described in claim 1, characterized in that: The upper surface of the crimping knife (4) has two grooves (9); The two slides (9) are movably connected to the two clamping blocks (7) respectively.
4. The cardboard crimping machine for producing packaging cartons as described in claim 1, characterized in that: Both clamping blocks (7) are threadedly connected to the lead screw (6).
5. A cardboard crimping machine for producing packaging cartons as described in claim 1, characterized in that: Limiting grooves (10) are provided on both the left and right sides of the connecting frame (5); The two limiting grooves (10) are respectively engaged with the two clamping blocks (7).
6. The cardboard crimping machine for producing packaging cartons as described in claim 1, characterized in that: A rectangular groove (11) is provided inside the connecting frame (5); The rectangular groove (11) is movably engaged with the limiting block (14).
7. A cardboard crimping machine for producing packaging cartons as described in claim 6, characterized in that: The reset spring (12) is fixedly connected to the rectangular groove (11); Among them, the front surface of the limiting block (14) is fixedly connected to the push block (13).
8. The cardboard crimping machine for producing packaging cartons as described in claim 1, characterized in that: The upper surface of the crimping knife (4) is provided with a slot (8); The slot (8) is engaged with the limiting block (14).