A flattening device for carton processing

Abstract

The utility model discloses a kind of flattening devices for carton processing, including support frame, conveying assembly is equipped on the support frame, support frame outside is fixedly provided with mounting bracket, rotating frame is rotatably provided in mounting bracket inner side, mounting disc is fixedly provided at rotating frame bottom end, compression roller is rotatably provided in mounting disc inner side, the compression roller is provided with multiple groups, fixed block is rotatably provided in mounting bracket inner side, adjusting plate is slidably provided in fixed block, adjusting plate bottom end is rotatably connected with rotating frame top end, adjusting hole is formed in adjusting plate, the adjusting hole is provided with multiple groups, insertion hole is formed in fixed block, fixed mechanism is provided in insertion hole and adjusting hole, and fixed mechanism includes insertion rod and fixed sleeve, insertion rod is inserted in insertion hole and adjusting hole, fixed sleeve is inserted in insertion rod top end, operator only needs to push adjusting plate to make insertion hole and insertion hole alignment, insertion rod can be quickly inserted, cooperate with the automatic locking mechanism of compression spring and clamping block, height adjustment can be completed without complex tool disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box processing technology, and more specifically, it relates to a flattening device for cardboard box processing. Background Technology

[0002] Cardboard box processing companies face the enormous challenge of handling various cardboard box specifications. Traditional cardboard box flattening equipment generally suffers from poor adaptability. When faced with cardboard boxes of different thicknesses, existing equipment cannot automatically adjust according to the thickness of the cardboard box. Operators need to frequently stop the machine to change molds or manually adjust the equipment parameters. This fixed flattening method is not only inefficient, but also prone to causing thin cardboard boxes to be over-compressed and deformed or thick cardboard boxes to be under-compressed. Especially when handling mixed batches of cardboard boxes, the limitations of the equipment are more obvious, which seriously restricts the improvement of production efficiency and product quality, while increasing labor costs and equipment maintenance difficulty.

[0003] In actual production, carton processing companies often need to switch quickly between different orders, which places higher demands on the flexibility and response speed of the equipment. However, the existing flattening devices have obvious deficiencies in terms of adjustment and fixing mechanisms. The adjustment process requires the use of special tools for complex disassembly and assembly operations, and a single adjustment can take up to tens of minutes, which seriously affects the continuity of production. At the same time, the unlocking process is equally cumbersome, requiring multiple fixing points to be released one by one in a specific order, which not only increases the difficulty of operation, but also easily leads to equipment damage or safety hazards due to improper operation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a flattening device for carton processing to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flattening device for carton processing, comprising a support frame, a conveying assembly on the support frame, a mounting frame fixedly mounted on the outer side of the support frame, a rotating frame rotatably mounted on the inner side of the mounting frame, a mounting plate fixedly mounted at the bottom end of the rotating frame, a pressure roller rotatably mounted on the inner side of the mounting plate, multiple sets of pressure rollers, a fixing block rotatably mounted on the inner side of the mounting frame, an adjusting plate slidably mounted inside the fixing block, the bottom end of the adjusting plate rotatably connected to the top end of the rotating frame, and adjusting holes provided on the adjusting plate, multiple sets of adjusting holes. The device has an insertion hole, and a fixing mechanism is installed within the insertion hole and adjustment hole. The fixing mechanism includes an insertion rod and a fixing sleeve. The insertion rod is inserted into the insertion hole and adjustment hole, and the fixing sleeve is inserted into the top of the insertion rod. A sliding groove is provided on the outer side of the insertion rod. Multiple sets of sliding grooves are provided, and each has a locking block slidingly mounted on its inner side. A retaining ring is fixedly mounted on the inner side of the fixing sleeve. An unlocking sleeve is slidably mounted on the inner side of the fixing sleeve. A push block is fixedly mounted on the inner side of the unlocking sleeve. A movable groove is provided inside the insertion rod. The unlocking sleeve and the push block are slidably connected to the movable groove. Compression springs are provided between each set of locking blocks and the sliding groove. Multiple sets of compression springs are provided.

[0008] The present invention is further configured such that a sliding groove is provided on the outer side of the fixed sleeve, and a slider is fixedly provided on the outer side of the unlocking sleeve. Multiple sets of the sliding groove and the slider are provided and slidably connected. Through this configuration, the sliding cooperation between the slider and the sliding groove can be realized, thereby ensuring that the flattening device is more flexible and precise during the adjustment process, and facilitating quick locking and unlocking adjustment.

[0009] The present invention is further configured such that an annular groove is provided on the outer side of the fixed sleeve, a rotating sleeve is rotatably provided on the outer side of the fixed sleeve, a limiting plate is fixedly provided on the top of the rotating sleeve, multiple sets of limiting plates slide in the annular groove, and multiple sets of sliders are provided with limiting grooves on the outer side. This design can effectively limit the rotation range of the rotating sleeve, ensure the rotation accuracy of the device, avoid damage caused by excessive rotation or loss of control, and enhance the stability and safety of the device.

[0010] The present invention is further configured such that a positioning block is slidably provided on the outer side of the rotating sleeve, and multiple sets of positioning blocks are provided, each with a return spring connected to its top end. The bottom ends of the multiple sets of return springs are fixedly connected to the outer wall of the rotating sleeve. A limiting sleeve is slidably provided on the outer side of the fixed sleeve, and the limiting sleeve abuts against the top of the multiple sets of positioning blocks. Through the elastic action of the return spring, the positioning block can quickly return to the predetermined position after the external force is released, ensuring the accurate positioning and stability of the device during operation and reducing the risk of misoperation.

[0011] The present invention is further configured such that a guide block is fixedly provided on the inner side of the limiting sleeve, and a guide groove is provided on the outer side of the fixed sleeve. Multiple sets of guide blocks and guide grooves are provided and slidably connected. Tension springs are provided between the multiple sets of guide blocks and guide grooves. This configuration optimizes the connection between the guide blocks and guide grooves through tension springs, enhances the stability of the device, makes the sliding of the limiting sleeve smoother, and thus improves the accuracy of operation and the long-term stability of the equipment.

[0012] The present invention is further configured such that a rotating sleeve is rotatably provided on the outside of the fixed sleeve, and a longitudinal rod is fixedly provided on the outside of the rotating sleeve. The longitudinal rod is provided in multiple sets, and each set has a limit hole on its outside. A limit rod is fixedly provided on the outside of the limit sleeve. The limit rod is provided in multiple sets. Through the cooperation of the limit rod and the limit hole, the rotation range of the longitudinal rod can be precisely controlled to prevent excessive rotation or deviation, thus ensuring the efficient operation and long-term stability of the device.

[0013] The present invention is further configured such that a compression spring is connected to the inner side of the movable groove, and an abutment plate is fixedly provided at the top of the compression spring. The elasticity of the compression spring can provide stable pressure support for the flattening device, so that the carton is subjected to uniform and appropriate pressure during the flattening process, ensuring the flatness of the carton and the long-term stability of the device.

[0014] The present invention is further configured such that a positioning sleeve is fixedly provided on the bottom surface of the rotating sleeve, and a sliding hole is provided on the inner side of the positioning sleeve. Multiple sets of sliding holes are provided, and each set of sliding holes is connected to a push spring. Each set of push springs is connected to an abutment block at its top. The multiple sets of abutment blocks slide in the multiple sets of sliding holes respectively. An abutment groove is provided on the outer side of the fixed sleeve. Multiple sets of abutment grooves are provided and abut against the multiple sets of abutment blocks respectively. This design achieves precise adjustment of the positioning sleeve through the cooperation of the push springs and abutment blocks, ensuring the stable positioning of the rotating sleeve and effectively preventing errors caused by inaccurate positioning, thereby improving the overall accuracy and stability of the flattening device.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a flattening device for carton processing, which has the following advantages:

[0017] 1. This carton processing flattening device adopts an innovative linkage design between the adjusting plate and the rotating frame. By sliding the adjusting plate within the fixed block, the rotation angle of the rotating frame is controlled, thereby precisely adjusting the height position of the pressure roller. This enables rapid adaptation to cartons of different thicknesses. Operators only need to push the adjusting plate to align the adjusting hole with the insertion hole, and the insertion rod can be quickly inserted. With the automatic locking mechanism of the compression spring and the locking block, height adjustment can be completed without complicated tool disassembly and assembly. This integrated adjustment method completely solves the problem of frequent mold changes required by traditional equipment. It is particularly suitable for work scenarios in e-commerce logistics and automated packaging production that require processing cartons of various specifications, significantly improving production efficiency and equipment utilization. At the same time, precise height control ensures that thin cartons are not over-compressed and deformed, while thick cartons can be fully flattened, greatly improving the consistency and stability of product quality.

[0018] 2. This device adopts a multi-level linkage safety locking system, including the cooperation between the rotating sleeve and the abutment block, the interlocking between the limit sleeve and the positioning block, and the linkage between the rotating sleeve and the limiting plate, forming a complete protection network against accidental loosening. This solves the problem of adjustment position drift that easily occurs in traditional flattening equipment during high-frequency vibration operation. This multi-level locking structure ensures that the adjustment plate can maintain accurate positioning even under continuous high-load operation conditions through mutual restraint. This design is particularly suitable for the production needs of carton processing enterprises that require long-term continuous operation. By improving the reliability and stability of the equipment, it effectively avoids product quality fluctuations and equipment downtime caused by positioning loosening, significantly reduces maintenance costs and production interruption risks, and ensures the continuity of the production process and the stability of product quality.

[0019] 3. The unlocking process of this device is designed with full consideration of ease of operation and time efficiency. By rotating the rotating sleeve, the longitudinal rod is driven to rotate, which releases the multi-level locking of the limit rod, positioning block and limiting plate in sequence. Then, the push block is pushed to make the unlocking sleeve slide and compress the locking block, so that the unlocking plate and the insertion rod can be easily unlocked and pulled out. The entire unlocking process can be completed in just a few minutes, which is significantly reduced compared to the adjustment time of traditional equipment which takes tens of minutes. The operation steps are simple and clear, and it is suitable for operators of all skill levels. At the same time, the device integrates the collaborative working mode of the conveying components and multiple sets of pressure rollers, realizing continuous conveying and uniform flattening of cartons. This modular design not only facilitates maintenance, but also ensures the uniformity of the flattening effect, providing carton processing enterprises with an efficient and convenient automated flattening solution. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a flattening device for cardboard box processing according to the present invention;

[0021] Figure 2 This is a schematic diagram of the rotating frame in this utility model;

[0022] Figure 3 This is a schematic diagram of the separation structure of the insertion rod and the fixing sleeve in this utility model;

[0023] Figure 4 This is a cross-sectional view of the fixing sleeve and the insertion rod in this utility model;

[0024] Figure 5 This is a cross-sectional view of the fixing sleeve in this utility model;

[0025] Figure 6 This is a cross-sectional view of the insertion rod and the limiting sleeve in this utility model.

[0026] In the diagram: 1. Support frame; 2. Conveying assembly; 3. Mounting frame; 4. Rotating frame; 5. Mounting plate; 6. Pressure roller; 7. Fixing block; 8. Adjusting plate; 9. Adjusting hole; 10. Insertion hole; 11. Insertion rod; 12. Fixing sleeve; 13. Sliding groove; 14. Locking block; 15. Locking ring; 16. Unlocking sleeve; 17. Push block; 18. Movable groove; 19. Compression spring; 20. Slide groove; 21. Sliding block; 22. Annular groove; 23. Rotating sleeve; 24. Limiting plate; 25. Limiting groove; 26. Positioning block; 27. Return spring; 28. Limiting sleeve; 29. ​​Guide block; 30. Guide groove; 31. Tension spring; 32. Rotating sleeve; 33. Longitudinal rod; 34. Limiting hole; 35. Limiting rod; 36. Compression spring; 37. Abutting plate; 38. Positioning sleeve; 39. Sliding hole; 40. Push spring; 41. Abutting block; 42. Abutting groove; 43. Positioning groove. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5A cardboard box flattening device includes a support frame 1, a conveying assembly 2 on the support frame 1, a mounting frame 3 fixedly mounted on the outer side of the support frame 1, a rotating frame 4 rotatably mounted on the inner side of the mounting frame 3, a mounting plate 5 fixedly mounted at the bottom end of the rotating frame 4, a pressure roller 6 rotatably mounted on the inner side of the mounting plate 5, and multiple sets of pressure rollers 6. A fixing block 7 rotatably mounted on the inner side of the mounting frame 3, an adjusting plate 8 slidably mounted inside the fixing block 7, the bottom end of the adjusting plate 8 rotatably connected to the top end of the rotating frame 4, and multiple sets of adjusting holes 9. An insertion hole 10 is provided on the fixing block 7, and a fixing mechanism is provided in the insertion hole 10 and the adjusting hole 9. The structure includes a plug rod 11 and a fixing sleeve 12. The plug rod 11 is inserted into the insertion hole 10 and the adjustment hole 9. The fixing sleeve 12 is inserted into the top of the plug rod 11. A sliding groove 13 is provided on the outer side of the plug rod 11. Multiple sets of sliding grooves 13 are provided, and each set of them has a sliding locking block 14. A retaining ring 15 is fixedly provided on the inner side of the fixing sleeve 12. An unlocking sleeve 16 is slidably provided on the inner side of the fixing sleeve 12. A push block 17 is fixedly provided on the inner side of the unlocking sleeve 16. A movable groove 18 is provided inside the plug rod 11. The unlocking sleeve 16, the push block 17 and the movable groove 18 are slidably connected. Compression springs 19 are provided between each set of locking blocks 14 and the sliding groove 13. Multiple sets of compression springs 19 are provided.

[0031] The outer side of the fixed sleeve 12 is provided with a groove 20, and the outer side of the unlocking sleeve 16 is provided with a slider 21. The groove 20 and the slider 21 are provided with multiple sets and are slidably connected. This structure constitutes a guide sliding mechanism. When the multiple sets of sliders 21 slide in the groove 20, they provide a stable guiding effect, ensuring that the unlocking sleeve 16 can only move linearly along the preset trajectory without rotational deviation. This multi-point guiding design enhances the accuracy and stability of the unlocking process.

[0032] An annular groove 22 is provided on the outer side of the fixed sleeve 12, and a rotating sleeve 23 is rotatably provided on the outer side of the fixed sleeve 12. A limiting plate 24 is fixedly provided at the top of the rotating sleeve 23. Multiple sets of limiting plates 24 slide in the annular groove 22, and multiple sets of sliders 21 are provided with limiting grooves 25 on their outer sides. This design forms a first-level locking mechanism. The rotating sleeve 23 drives the limiting plate 24 to rotate in the annular groove 22. When the limiting plate 24 rotates to a specific position, it will be locked into the limiting groove 25 of the slider 21, forming a physical lock and preventing the slider 21 from sliding along the slide groove 20, thereby restricting the movement of the unlocking sleeve 16.

[0033] A positioning block 26 is slidably provided on the outer side of the rotating sleeve 23. Multiple positioning blocks 26 are provided, and each of them is connected to a return spring 27 at its top. The bottom ends of the multiple sets of return springs 27 are fixedly connected to the outer wall of the rotating sleeve 32. A limiting sleeve 28 is slidably provided on the outer side of the fixed sleeve 12. The limiting sleeve 28 abuts against the top of the multiple sets of positioning blocks 26. This structure constitutes a second-level locking protection system. The return spring 27 pulls the positioning block 26 to make it protrude outward, and the limiting sleeve 28 abuts against the top of the positioning block 26, forming a positioning lock on the rotating sleeve 23 to prevent the rotating sleeve 23 from rotating accidentally. When unlocking is required, the limiting sleeve 28 is removed and the positioning block 26 retracts under the action of the return spring 27, releasing the lock on the rotating sleeve 23.

[0034] A guide block 29 is fixedly provided on the inner side of the limiting sleeve 28, and a guide groove 30 is provided on the outer side of the fixed sleeve 12. Multiple sets of guide blocks 29 and guide grooves 30 are provided and slidably connected. Tension springs 31 are connected between the multiple sets of guide blocks 29 and guide grooves 30. This mechanism provides the guiding and resetting functions of the limiting sleeve 28. The sliding of the guide block 29 in the guide groove 30 ensures the linear movement of the limiting sleeve 28. The tension spring 31 provides an inward pulling force so that the limiting sleeve 28 has an automatic resetting characteristic. When the external force is released, it can automatically return to the position of the limiting positioning block 26 to achieve automatic locking.

[0035] A rotating sleeve 32 is rotatably provided on the outside of the fixed sleeve 12. A longitudinal rod 33 is fixedly provided on the outside of the rotating sleeve 32. Multiple sets of longitudinal rods 33 are provided, and each has a limit hole 34 on its outside. A limit rod 35 is fixedly provided on the outside of the limit sleeve 28. Multiple sets of limit rods 35 are provided. This structure forms a third-level locking mechanism. The limit rod 35 is inserted into the limit hole 34 of the longitudinal rod 33. The rotation of the rotating sleeve 32 causes the limit hole 34 to be misaligned or aligned with the limit rod 35. When aligned, the limit rod 35 is inserted into the limit hole 34 to lock the limit sleeve 28. When misaligned, the limit rod 35 is disengaged from the limit hole 34, releasing the restriction on the limit sleeve 28 and allowing it to move under the action of the tension spring 31.

[0036] A compression spring 36 is connected to the inner side of the movable slot 18, and an abutment plate 37 is fixed to the top of the compression spring 36. This structure provides a buffer and feedback mechanism for the unlocking process. When the unlocking sleeve 16 is inserted into the movable slot 18, the push block 17 abuts against the abutment plate 37 and compresses the compression spring 36. The compression spring 36 provides a stable reaction force to ensure that the unlocking sleeve 16 can maintain appropriate pressure when pushing the card block 14, while providing tactile feedback for the unlocking process.

[0037] A positioning sleeve 38 is fixedly provided on the bottom surface of the rotating sleeve 32. A sliding hole 39 is provided on the inner side of the positioning sleeve 38. Multiple sets of sliding holes 39 are provided, and each set of sliding holes 39 is connected to a push spring 40. Each set of push springs 40 is connected to a stop block 41 at its top. The multiple sets of stop blocks 41 slide in the multiple sets of sliding holes 39 respectively. An abutment groove 42 is provided on the outer side of the fixed sleeve 12. Multiple sets of abutment grooves 42 are provided and abut against the multiple sets of abutment blocks 41 respectively. This mechanism constitutes the positioning and locking system of the rotating sleeve 32. The push spring 40 pushes the abutment block 41 to extend out of the sliding hole 39 and embed into the abutment groove 42, forming a positioning lock for the rotating sleeve 32. When the rotating sleeve 32 rotates, the abutment block 41 moves in the abutment groove 42. The elastic action of the push spring 40 provides positioning feedback, ensuring that the rotating sleeve 32 can be accurately positioned to the preset angle position.

[0038] In this embodiment, during use, the control adjustment plate 8 slides within the fixed block 7, and the adjustment plate 8 pushes the rotating frame 4 to rotate along the mounting frame 3. The rotating frame 4 pushes multiple sets of pressure rollers 6 down to a suitable position and aligns the adjustment hole 9 with the insertion hole 10. Then, the insertion rod 11 is inserted into the insertion hole 10 and the adjustment hole 9, and the fixing sleeve 12 is inserted into the top of the insertion rod 11. The insertion hole 10 pushes multiple sets of locking blocks 14 to slide into the sliding groove 13 and compresses the compression spring 19. After the multiple sets of locking blocks 14 are fully locked into the fixing sleeve 12, the multiple sets of compression springs 19 reset and push the locking blocks 14 to slide out of the sliding groove 13, so that the bottom surface of the multiple sets of locking blocks 14 abuts against the top surface of the locking ring 15, thereby completing the fixing of the adjustment plate 8. The carton is conveyed by the conveying component 2 and flattened by the pressure rollers 6.

[0039] More specifically, when it is necessary to unlock the adjusting plate 8, rotating the rotating sleeve 32 drives multiple sets of vertical rods 33 to rotate, pushing the abutment blocks 41 to slide along the sliding holes 39 and pressing the push springs 40 through multiple sets of abutment grooves 42. Continuous rotation of the rotating sleeve 32 causes the multiple sets of abutment blocks 41 to move continuously within the multiple sets of abutment grooves 42. The rotation of the rotating sleeve 32 causes multiple sets of limiting rods 35 to disengage from the limiting holes 34, releasing the restriction on the limiting sleeve 28. Multiple sets of tension springs 31 pull the limiting sleeve 28 to release the abutment on the multiple sets of positioning blocks 26. Multiple sets of return springs 27 pull the positioning blocks 26 so that their bottom ends disengage from the positioning grooves 43. Release the positioning of the rotating sleeve 23, rotate the rotating sleeve 23 to drive the multiple sets of limiting plates 24 to slide along the annular groove 22 and disengage from the limiting groove 25, release the restriction on the multiple sets of sliders 21, push the push block 17 to make the unlocking sleeve 16 slide along the movable groove 18 and squeeze the compression spring 36. The unlocking sleeve 16 abuts against the outside of the multiple sets of locking blocks 14, so that the multiple sets of locking blocks 14 squeeze the compression spring 19, so that the multiple sets of locking blocks 14 disengage from the locking ring 15. Then the fixing sleeve 12 can be separated from the insertion rod 11, and the insertion rod 11 can be pulled out of the insertion hole 10 and the adjustment hole 9 to complete the unlocking of the adjustment plate 8.

[0040] In summary, during use or operation of the overall equipment: During use, the control adjustment plate 8 slides within the fixed block 7, pushing the rotating frame 4 to rotate along the mounting frame 3. The rotating frame 4 pushes multiple sets of pressure rollers 6 down to the appropriate position and aligns the adjustment hole 9 with the insertion hole 10. Then, the insertion rod 11 is inserted into the insertion hole 10 and the adjustment hole 9. The fixing sleeve 12 is inserted into the top of the insertion rod 11. Multiple sets of locking blocks 14 are pushed into the sliding groove 13 through the insertion hole 10, compressing the compression spring 19. After the multiple sets of locking blocks 14 are fully engaged within the fixing sleeve 12, the multiple sets of compression springs 19 reset, pushing the locking blocks 14 out of the sliding groove 13, causing the bottom surface of the multiple sets of locking blocks 14 to abut against the top surface of the retaining ring 15, thus completing the fixation of the adjustment plate 8. The carton is conveyed by the conveying component 2, and the carton is flattened by the pressure rollers 6.

[0041] When it is necessary to unlock the adjusting plate 8, rotating the rotating sleeve 32 drives multiple sets of vertical rods 33 to rotate. Through multiple sets of abutment grooves 42, the abutment blocks 41 slide along the sliding holes 39 and squeeze the push springs 40. Continuous rotation of the rotating sleeve 32 causes the multiple sets of abutment blocks 41 to move continuously within the multiple sets of abutment grooves 42. The rotation of the rotating sleeve 32 causes multiple sets of limiting rods 35 to disengage from the limiting holes 34, releasing the restriction on the limiting sleeve 28. Through multiple sets of tension springs 31, the limiting sleeve 28 is pulled to release the abutment on the multiple sets of positioning blocks 26. Through multiple sets of return springs 27, the positioning blocks 26 are pulled so that their bottom ends disengage from the positioning grooves 43, releasing the abutment. Positioning the rotating sleeve 23, rotating the rotating sleeve 23 causes multiple sets of limiting plates 24 to slide along the annular groove 22 and disengage from the limiting groove 25, releasing the restriction on multiple sets of sliders 21, pushing the push block 17 so that the unlocking sleeve 16 slides along the movable groove 18 and squeezes the compression spring 36. The unlocking sleeve 16 abuts against the outside of multiple sets of locking blocks 14, so that multiple sets of locking blocks 14 squeeze the compression spring 19, so that multiple sets of locking blocks 14 disengage from the locking ring 15. Then the fixing sleeve 12 can be separated from the insertion rod 11, and the insertion rod 11 can be pulled out of the insertion hole 10 and the adjustment hole 9 to complete the unlocking of the adjustment plate 8.

[0042] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option.

[0043] In all the solutions mentioned above, the operation of electrical components, unless otherwise specified, is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and wiring connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here. The specific models and specifications of the electrical components involved in this solution need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, and therefore will not be described in detail.

[0044] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be described in detail in this utility model.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flattening device for carton processing, comprising a support frame (1), characterized in that: The support frame (1) is provided with a conveying assembly (2). A mounting frame (3) is fixedly provided on the outside of the support frame (1). A rotating frame (4) is rotatably provided on the inside of the mounting frame (3). A mounting plate (5) is fixedly provided at the bottom of the rotating frame (4). A pressure roller (6) is rotatably provided on the inside of the mounting plate (5). Multiple sets of pressure rollers (6) are provided. A fixing block (7) is rotatably provided on the inside of the mounting frame (3). An adjusting plate (8) is slidably provided in the fixing block (7). The bottom end of the adjusting plate (8) is rotatably connected to the top end of the rotating frame (4). An adjusting hole (9) is provided on the adjusting plate (8). Multiple sets of adjusting holes (9) are provided. An insertion hole (10) is provided on the fixing block (7). A fixing mechanism is provided in the insertion hole (10) and the adjusting hole (9). The fixing mechanism includes an insertion rod (11) and a fixing rod. The fixed sleeve (12) and the insertion rod (11) are inserted into the insertion hole (10) and the adjustment hole (9). The fixed sleeve (12) is inserted into the top of the insertion rod (11). The insertion rod (11) has a sliding groove (13) on the outside. The sliding groove (13) is provided with multiple sets and each of them has a sliding block (14) on its inner side. The fixed sleeve (12) is fixedly provided with a retaining ring (15). The fixed sleeve (12) is slidably provided with an unlocking sleeve (16) on its inner side. The unlocking sleeve (16) is fixedly provided with a push block (17) on its inner side. The insertion rod (11) has a movable groove (18). The unlocking sleeve (16), the push block (17), and the movable groove (18) are slidably connected. Each of the multiple sets of blocks (14) and the sliding groove (13) is connected with a compression spring (19). The compression spring (19) is provided with multiple sets.

2. A flattening device for carton processing according to claim 1, characterized in that: The outer side of the fixed sleeve (12) is provided with a sliding groove (20), and the outer side of the unlocking sleeve (16) is provided with a slider (21). The sliding groove (20) and the slider (21) are provided with multiple sets and are slidably connected.

3. The flattening device for carton processing according to claim 2, characterized in that: An annular groove (22) is provided on the outside of the fixed sleeve (12), and a rotating sleeve (23) is provided on the outside of the fixed sleeve (12). A limiting plate (24) is fixed on the top of the rotating sleeve (23). Multiple sets of limiting plates (24) slide in the annular groove (22), and multiple sets of sliders (21) are provided with limiting grooves (25) on the outside.

4. The flattening device for carton processing according to claim 3, characterized in that: A positioning block (26) is slidably provided on the outer side of the rotating sleeve (23). The positioning block (26) is provided in multiple sets and each of the top ends is connected to a reset spring (27). The bottom ends of the multiple sets of reset springs (27) are fixedly connected to the outer wall of the rotating sleeve (32). A limiting sleeve (28) is slidably provided on the outer side of the fixed sleeve (12). The limiting sleeve (28) abuts against the top of the multiple sets of positioning blocks (26).

5. A flattening device for carton processing according to claim 4, characterized in that: A guide block (29) is fixedly provided on the inner side of the limiting sleeve (28), and a guide groove (30) is provided on the outer side of the fixing sleeve (12). The guide block (29) and the guide groove (30) are provided in multiple sets and are slidably connected. A tension spring (31) is provided between the multiple sets of guide blocks (29) and the guide groove (30).

6. The flattening device for carton processing according to claim 5, characterized in that: A rotating sleeve (32) is provided on the outside of the fixed sleeve (12), and a longitudinal rod (33) is fixed on the outside of the rotating sleeve (32). The longitudinal rod (33) is provided in multiple sets and each of them has a limit hole (34) on its outside. A limit rod (35) is fixed on the outside of the limit sleeve (28), and the limit rod (35) is provided in multiple sets.

7. A flattening device for carton processing according to claim 6, characterized in that: A compression spring (36) is connected to the inner side of the movable groove (18), and an abutment plate (37) is fixedly provided at the top of the compression spring (36).

8. A flattening device for carton processing according to claim 7, characterized in that: A positioning sleeve (38) is fixedly provided on the bottom surface of the rotating sleeve (32). A sliding hole (39) is provided on the inner side of the positioning sleeve (38). Multiple sets of sliding holes (39) are provided, and push springs (40) are connected to the inner side of each set. Abutting blocks (41) are connected to the top of each set of push springs (40). Multiple abutting blocks (41) slide in multiple sets of sliding holes (39). An abutting groove (42) is provided on the outer side of the fixed sleeve (12). Multiple sets of abutting grooves (42) are provided and abut against multiple sets of abutting blocks (41) respectively. Multiple positioning grooves (43) are provided on the outer wall of the fixed sleeve (12) and abut against multiple sets of positioning blocks (26).

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