Automatic creasing device for paperboard

Abstract

The utility model relates to paperboard processing equipment's technical field especially, more particularly to a kind of paperboard automatic indentation device, comprising: double-layer hollow roller body: one end surface is provided with column groove, and the inner wall of column groove is rotatably connected with driving column, and the surface of driving column is evenly provided with arc guide groove;Convex strip;Annular cleaning frame: symmetrically slidingly connected in outer guide groove inner wall, and located convex strip outer side;One-way dust extraction socket. Therefore, the utility model indentation precision is high, can be accurately adjusted the height of convex strip by arc guide groove and positioning clamping structure, adapts to different crease demand, and crease position error is ±0.1mm inside;Cleaning does not need artificial cleaning one by one, quickly completes convex strip scraping, depth cleaning, and single cleaning time is greatly shortened, also avoids convex strip damage, prolongs its life;Compact structure integrates indentation and cleaning function, saves space, easy to operate, maintenance cost is low, and it is suitable for different technical level personnel use.

Description

Technical Field

[0001] This utility model relates to the technical field of cardboard processing equipment, and in particular to an automatic cardboard creasing device. Background Technology

[0002] In the field of cardboard packaging box production, the creasing process is a key step to ensure the accuracy of subsequent folding and forming. As the core execution component of the CN216832532U cardboard automatic creasing device, the surface cleanliness of the embossed strip directly determines the creasing quality and production stability. In this device, the embossed strip forms creases by squeezing and engaging with the cardboard. During batch processing, cardboard fibers, paper dust, and printing residues tend to adhere to the surface of the embossed strip and the root of the groove. If not cleaned in time, it will lead to unclear crease lines, frayed edges, and even "bursting" defects, seriously affecting the product qualification rate.

[0003] However, the current industry relies on manual operation for cleaning the protrusions of this device. The cleaning process requires the use of tools such as brushes and scrapers to clean each protrusion individually. Specifically, the operator needs to wipe or scrape the surface of each protrusion one by one. For stubborn impurities, repeated operation is required to clean them thoroughly.

[0004] This "tool-by-tool cleanup" approach has significant drawbacks:

[0005] On the one hand, the working efficiency is extremely low. The rollers of this device are arranged with multiple protrusions along the circumference. Each cleaning requires operating on all the protrusions one by one. Especially in high-speed production lines, the machine needs to be stopped multiple times a day for cleaning, which takes up a lot of production time and seriously restricts the overall processing efficiency of the device.

[0006] On the other hand, the labor intensity is high. Operators need to maintain a bent-over posture and hold tools for a long time. In addition, the cleaning process requires frequent disassembly and assembly of the ring seals. The repetitive movements can easily lead to hand fatigue and back strain, which does not meet the requirements of modern production for "low labor intensity".

[0007] In addition, manual cleaning of each one has the problem of inconsistent cleaning quality. Due to differences in the operator's experience and physical condition, some ridges may not be thoroughly cleaned, and residual impurities will still affect the subsequent indentation effect. At the same time, if the tool does not apply proper pressure to the surface of the ridge during manual operation, it may cause scratches and wear on the ridge, which will shorten the service life of the ridge and increase the maintenance cost of the device. Utility Model Content

[0008] This utility model aims to at least partially solve one of the technical problems in the related art.

[0009] Therefore, the purpose of this utility model is to propose an automatic cardboard creasing device. This utility model has high creasing accuracy, and the height of the raised strips can be precisely adjusted through the arc-shaped guide groove and positioning snap-fit ​​structure to adapt to different crease requirements, with a crease position error within ±0.1mm. Cleaning does not require manual cleaning of each strip, and the raised strips can be quickly scraped off and deeply cleaned, greatly reducing the cleaning time per cycle and avoiding damage to the raised strips, thus extending their lifespan. The compact structure integrates creasing and cleaning functions, saving space, and is simple to operate with low maintenance costs, making it suitable for use by personnel of different technical levels.

[0010] To achieve the above objectives, this utility model proposes an automatic cardboard creasing device, comprising:

[0011] Double-layer hollow roller body: A column groove is opened on one end surface, and a drive column is rotatably connected to the inner wall of the column groove. The surface of the drive column is uniformly opened with arc-shaped guide grooves, and the depth of the arc-shaped guide grooves gradually decreases from one end to the other end.

[0012] The convex strip is slidably connected to the inner wall of the inner guide groove on the surface of the double-layer hollow roller body, and a spring is fixedly connected between it and the inner wall of the inner guide groove. An arc-shaped knife holder is fixedly connected at the port of the inner guide groove and sleeved on the outside of the convex strip. One end of the convex strip passes through the outer guide groove on the surface of the double-layer hollow roller body and exits outside the outer shell. The convex strip has its own guide shaft. One end of the guide shaft passes through the through hole in the inner wall of the inner guide groove and enters the column groove, and is slidably connected to the inner wall of the arc-shaped guide groove.

[0013] Annular cleaning frame: symmetrically slidably connected to the inner wall of the outer guide groove and located outside the protrusion. The cleaning end of the annular cleaning frame penetrates into the hollow cavity of the double-layer hollow roller through the outer guide groove and is fixedly connected with a cleaning brush head. The cleaning brush head is in contact with the inner shell surface.

[0014] One-way dust extraction socket: installed on the surface of the outer shell and connected to the inner wall of the mounting hole of the hollow cavity.

[0015] In addition, the automatic cardboard creasing device proposed in the above application may also have the following additional technical features:

[0016] Specifically, a drive disk is integrally formed on one end surface of the drive column outside the column groove and is slidably connected to the end face of the double-layer hollow roller body. A connecting shaft hole is opened on the surface of the drive disk, and a left connecting part is integrally formed on one end surface of the double-layer hollow roller body away from the column groove.

[0017] The outer shell surface of the double-layer hollow roller body is fixedly connected to a left positioning seat and a right fixing seat, respectively, and is located outside the outer guide groove;

[0018] The right fixed seat is located outside the drive disk and is slidably connected to the outer end face of the drive disk. A right connecting part is integrally formed on the surface of the right fixed seat at the position corresponding to the connecting shaft hole. One end of the right connecting part is located inside the connecting shaft hole and is slidably connected to the inner wall of the connecting shaft hole.

[0019] Both the left and right connecting parts have connecting keyways on their surfaces. One end of the connecting key shaft is inserted into the connecting keyway and is fixedly connected to the inner wall of the connecting keyway by a fixing bolt.

[0020] Specifically, magnets are provided on the surfaces of the left positioning seat and the right fixing seat at positions corresponding to the annular cleaning frame, and are magnetically fixed to the surface of the annular cleaning frame.

[0021] Specifically, one end of the connecting rod of the right fixed seat is fixedly connected to the surface of the outer shell, and an arc-shaped hole frame is fixedly connected between the surfaces of the connecting rod;

[0022] A handle base is fixedly connected to the surface of the drive disk and is located on one side of the arc-shaped hole frame. Positioning clips and positioning holes are respectively provided on the surface of the handle base and the position of the arc-shaped hole frame. The positioning clips are engaged and fixed with the positioning holes.

[0023] Specifically, the length of the outer guide groove is greater than the length of the inner guide groove, and the height of the annular cleaning frame protruding from the outer shell surface is lower than the height of the convex strip protruding from the outer shell surface.

[0024] Specifically, a gentle platform is integrally formed at the highest point of the inner wall of the arc-shaped guide groove;

[0025] The smooth platform is provided in multiple sets, and the multiple sets of smooth platforms are evenly arranged on the inner wall of the arc-shaped guide groove, so that the inner wall of the arc-shaped guide groove is generally stepped.

[0026] The surface of the double-layer hollow roller body near the left connecting part is provided with a dustproof air inlet seat that communicates with the interior of the hollow cavity.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] (i) High indentation accuracy, adaptable to diverse needs

[0030] 1. Adjustable height of raised strip and adjustable crease depth: Through the cooperation of arc-shaped guide groove and guide shaft, the protrusion height of the raised strip can be precisely adjusted (the adjustment range is determined by the depth difference of the arc-shaped guide groove). Combined with the locking function of positioning card head and multiple sets of positioning card holes, it can adapt to the crease requirements of different depths from 0.1-5mm, and meet the creasing process requirements of different materials such as thin cardboard and thick cardboard.

[0031] 2. Stable structure and strong consistency of creases: The drive column slides with the right connecting part through the connecting shaft hole to ensure the stability of the axis during rotation; the convex strip slides along the inner and outer guide grooves in both directions to avoid deviation or shaking during creasing, so that the crease position error of the same batch of cardboard is controlled within ±0.1mm, which significantly improves the product qualification rate.

[0032] (ii) Cleaning automation reduces labor intensity and costs.

[0033] 1. No tools required for individual cleaning, increasing efficiency by over 80%: Abandoning the traditional method of "manually cleaning each protrusion with a brush and scraper", the cleaning time is reduced from the traditional 15-20 minutes to 2-3 minutes by using a retractable scraping method and a ring cleaning frame. Moreover, no parts need to be disassembled, greatly reducing downtime for maintenance and adapting to the continuous operation requirements of high-speed production lines.

[0034] 2. Stable cleaning quality and avoidance of damage to the protrusions: The initial scraping of the arc-shaped blade holder and the deep cleaning of the cleaning brush head form a "double cleaning", which can thoroughly remove impurities from the surface and head of the protrusions, avoiding the problems of scratches and wear on the protrusions caused by uneven force during manual cleaning, extending the service life of the protrusions by more than 30%, and reducing the cost of parts replacement.

[0035] (iii) Compact structure and high degree of functional integration

[0036] 1. Integrated design saves installation space: The indentation strip, cleaning mechanism and impurity collection chamber are integrated into the double-layer hollow roller body, eliminating the need for additional independent cleaning equipment. The overall volume of the device is reduced by 40% compared to the combination of "indentation machine + independent cleaning machine", which is suitable for the layout requirements of small workshop spaces.

[0037] 2. Dual protection to safeguard the working environment: The one-way dust extraction socket prevents impurities from being discharged, and the dustproof air inlet seat prevents external dust from entering the hollow cavity. The dual protection ensures that impurities do not fall into the workshop environment during the cleaning process, reducing dust pollution, and at the same time, preventing impurities from adhering again and affecting the quality of the indentation.

[0038] (iv) Easy to operate and suitable for personnel with different technical skills

[0039] 1. Simple adjustment and operation, no professional skills required: The extension and retraction of the convex strip can be completed by rotating the drive plate through the handle base. The snap-fit ​​design between the positioning card head and the positioning card hole realizes "one-click locking", which can be quickly mastered even by non-professional operators, reducing personnel training costs.

[0040] 2. Low maintenance cost: The spring, arc-shaped tool holder and other components have simple structures and low procurement costs. Attached Figure Description

[0041] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0042] Figure 1 This is a schematic diagram of the structure of an automatic cardboard creasing device according to the present invention;

[0043] Figure 2 This is a schematic diagram of the drive column structure in an automatic cardboard creasing device according to the present invention;

[0044] Figure 3 This is a schematic diagram of the arc-shaped guide groove structure in an automatic cardboard creasing device of this utility model;

[0045] Figure 4 This is a schematic diagram of the magnet structure in an automatic cardboard creasing device according to the present invention;

[0046] Figure 5 This is a schematic diagram of the inner guide groove structure in an automatic cardboard creasing device of this utility model;

[0047] Figure 6 This is a schematic diagram of the annular cleaning frame structure in an automatic cardboard creasing device of this utility model.

[0048] As shown in the figure:

[0049] 1. Double-layer hollow roller body; 11. Column groove; 12. Drive column; 13. Arc-shaped guide groove; 14. Inner guide groove; 15. Spring; 16. Arc-shaped knife holder; 17. Outer guide groove; 100. Hollow cavity;

[0050] 2. Protruding strip; 21. Guide shaft;

[0051] 3. Circular cleaning frame; 31. Cleaning end; 32. Cleaning brush head;

[0052] 4. Single-direction dust extraction socket; 41. Mounting hole; 42. Dustproof air inlet base;

[0053] 121. Drive plate; 122. Connecting shaft hole; 200. Left connecting part; 300. Left positioning seat; 400. Right fixing seat; 500. Right connecting part; 600. Connecting keyway; 601. Fixing bolt;

[0054] 301. Magnet; 401. Connecting rod bracket; 402. Arc-shaped hole bracket; 403. Positioning clip hole; 123. Handle base; 124. Positioning clip head; 131. Flat platform. Detailed Implementation

[0055] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0056] The following description, in conjunction with the accompanying drawings, describes an embodiment of an automatic cardboard creasing device according to the present invention.

[0057] like Figures 1-6 As shown, an automatic cardboard creasing device according to an embodiment of the present invention includes:

[0058] Double-layer hollow roller body 1: A column groove 11 is opened on one end surface, and a drive column 12 is rotatably connected to the inner wall of the column groove 11. An arc-shaped guide groove 13 is evenly opened on the surface of the drive column 12, and the depth of the arc-shaped guide groove 13 gradually decreases from one end to the other end.

[0059] convex strip 2: It is slidably connected to the inner wall of the inner guide groove 14 on the inner shell surface of the double-layer hollow roller body 1, and a spring 15 is fixedly connected between it and the inner wall of the inner guide groove 14. An arc-shaped knife holder 16 is fixedly connected at the end of the inner guide groove 14 and sleeved on the outside of the convex strip 2. One end of the convex strip 2 passes through the outer guide groove 17 on the outer shell surface of the double-layer hollow roller body 1 and exits the outer shell. The convex strip 2 has its own guide shaft 21. One end of the guide shaft 21 passes through the through hole in the inner wall of the inner guide groove 14 and enters the interior of the column groove 11, and is slidably connected to the inner wall of the arc-shaped guide groove 13.

[0060] Annular cleaning frame 3: symmetrically slidably connected to the inner wall of the outer guide groove 17 and located outside the protrusion 2. The cleaning end 31 of the annular cleaning frame 3 passes through the outer guide groove 17 and enters the hollow cavity 100 of the double-layer hollow roller body 1, and is fixedly connected with a cleaning brush head 32. The cleaning brush head 32 is in contact with the inner shell surface.

[0061] One-way dust extraction socket 4: installed on the surface of the outer casing and connected to the inner wall of the mounting hole 41, which communicates with the interior of the hollow cavity 100.

[0062] It should be noted that the inner wall of the one-way vacuum socket 4 described in this embodiment is provided with elastic silicone, which can automatically close after the vacuum cleaner nozzle is pulled out.

[0063] It should be noted that this device must be used in conjunction with the device in CN216832532U to achieve automatic indentation operation.

[0064] Specifically, its working principle is as follows: This device achieves integrated operation of the indentation and cleaning functions through a coordinated mechanism of "indentation operation - ridge cleaning - impurity collection," specifically divided into two core workflows: indentation mode and cleaning mode.

[0065] (a) Indentation mode: Precisely forming creases

[0066] Adjustment and locking of the position of the protrusion 2: By rotating the drive disk 121, the drive column 12 is rotated. The arc-shaped guide groove 13 on the surface of the drive column 12 (the depth gradually changes from one end to the other) pushes the guide shaft 21 of the protrusion 2 to move. When the guide shaft 21 slides from the deep end to the shallow end along the arc-shaped guide groove 13 (which can be understood as sliding from the low end to the high end), it overcomes the elastic force of the spring 15 and pushes the protrusion 2 to extend outward along the inner guide groove 14 until one end of the protrusion 2 passes through the outer guide groove 17 and protrudes from the surface of the double-layer hollow roller body 1, forming the protrusion structure required for the indentation. At this time, the position of the drive column 12 is locked by the positioning clip 124 of the handle seat 123 and the positioning clip 403 of the arc-shaped hole frame 402, ensuring that the protrusion 2 maintains a stable height during the indentation process.

[0067] Roller-linked creasing: The device is connected to the external transmission system through the connecting keyway 600 of the left connecting part 200 and the right connecting part 500. The double-layer hollow roller 1 rotates with the transmission system. When the cardboard passes between the two sets of rollers, the ridge 2 engages with the groove or ridge 2 of the other roller. The pressure action forms a clear crease on the surface of the cardboard. At the same time, the magnets 301 on the left positioning seat 300 and the right fixing seat 400 attract and fix the annular cleaning frame 3 to prevent it from shifting and interfering with the operation of the ridge 2 during the creasing process.

[0068] (ii) Cleaning mode: Automatically removes impurities from the raised strip 2

[0069] Retraction and initial scraping of the protruding strip 2: When cleaning is required, release the engagement between the positioning clip head 124 and the positioning clip hole 403, rotate the drive disk 121 in the opposite direction, and make the guide shaft 21 slide from the shallow end to the deep end along the arc-shaped guide groove 13. The spring 15 restores its deformation and pulls the protruding strip 2 to retract along the inner guide groove 14. The protruding part of the protruding strip 2 gradually retracts into the hollow cavity 100 of the double-layer hollow roller body 1 until it is flush with the inner shell surface. During this process, the arc-shaped knife holder 16 (sleeved on the outside of the protruding strip 2) at the port of the inner guide groove 14 performs initial scraping of paper dust, fibers and other impurities attached to the surface of the protruding strip 2. The scraped impurities fall directly into the hollow cavity 100.

[0070] Deep cleaning and impurity collection: After the protrusion 2 is fully retracted, the magnet 301 is released from adsorption on the annular cleaning frame 3, and the annular cleaning frame 3 is pushed to slide along the outer guide groove 17. The cleaning end 31 of the annular cleaning frame 3 drives the cleaning brush head 32 to move synchronously. The cleaning brush head 32 makes full contact with the inner shell surface, the arc-shaped blade holder 16 surface and the end face of the protrusion 2 to perform deep cleaning of the stubborn impurities that have been initially scraped away. After cleaning is completed, the annular cleaning frame 3 is pushed back to the initial position and re-adsorbed and fixed by the magnet 301, returning to the standby state of the indentation mode.

[0071] Hollow cavity 100 impurity removal: After the device has accumulated a set number of runs, the suction pipe of the external vacuum cleaner is inserted into the mounting hole 41 through the one-way dust extraction socket 4, connecting the hollow cavity 100 of the double-layer hollow roller body 1. Under the action of negative pressure, the impurities collected in the hollow cavity 100 are quickly extracted. At the same time, the dustproof air inlet seat 42 balances the air pressure inside the hollow cavity 100, preventing excessive negative pressure from causing external dust to enter, ensuring thorough cleaning without contaminating the internal structure of the device.

[0072] In one embodiment of this utility model, such as Figures 1-6 As shown, a drive disk 121 is integrally formed on one end surface of the drive column 12 located outside the column groove 11, and is slidably connected to the end face of the double-layer hollow roller body 1. A connecting shaft hole 122 is opened on the surface of the drive disk 121, and a left connecting part 200 is integrally formed on one end surface of the double-layer hollow roller body 1 away from the column groove 11.

[0073] The outer shell surface of the double-layer hollow roller body 1 is fixedly connected with the left positioning seat 300 and the right fixing seat 400, respectively, and is located outside the outer guide groove 17;

[0074] The right fixed seat 400 is located outside the drive disk 121 and is slidably connected to the outer end face of the drive disk 121. The right fixed seat 400 is integrally formed with a right connecting part 500 at the position corresponding to the connecting shaft hole 122. One end of the right connecting part 500 is located inside the connecting shaft hole 122 and is slidably connected to the inner wall of the connecting shaft hole 122.

[0075] Both the left connecting part 200 and the right connecting part 500 have connecting keyways 600 on their surfaces. One end of the connecting key shaft is inserted into the connecting keyway 600 and is fixedly connected to the inner wall of the connecting keyway 600 by a fixing bolt 601.

[0076] Specifically, the drive disc 121 and the drive column 12 are integrally formed, which makes it convenient for the operator to rotate to drive the drive column 12 and thereby adjust the position of the convex strip 2. It is also slidably connected to the end face of the double-layer hollow roller body 1 to ensure stability during rotation.

[0077] Connection and positioning: The left connecting part 200 and the right connecting part 500 cooperate with the connecting keyway 600 and the fixing bolt 601 to quickly fix them with the connecting key shaft on the frame to realize the installation of the device. The connecting shaft hole 122 cooperates with the right connecting part 500 to ensure that the shaft center does not deviate when the drive column 12 rotates, thus improving the structural stability.

[0078] In one embodiment of this utility model, such as Figures 1-6 As shown, magnets 301 are provided on the surfaces of the left positioning seat 300 and the right fixing seat 400 at positions corresponding to the annular cleaning frame 3, and are magnetically fixed to the surface of the annular cleaning frame 3.

[0079] Specifically, magnets 301 are installed on the surfaces of the left positioning seat 300 and the right fixing seat 400 at positions corresponding to the annular cleaning frame 3. The annular cleaning frame 3 can be fixed by magnetic attraction. Its core function is to limit and fix the annular cleaning frame 3 after it has finished cleaning and reset, so as to avoid the annular cleaning frame 3 shifting and the protruding stroke of the protruding strip 2 conflicting when the device switches to the indentation mode and the protruding strip 2 extends outward, thus ensuring that the indentation operation is carried out normally. The attraction force of the magnet 301 can be controlled by adjusting its volume to ensure that the annular cleaning frame 3 can be stably fixed and that it can be easily pushed to slide for cleaning later.

[0080] In one embodiment of this utility model, such as Figures 1-6 As shown, one end of the connecting rod bracket 401 of the right fixed base 400 is fixedly connected to the surface of the outer shell, and an arc-shaped hole bracket 402 is fixedly connected between the surfaces of the connecting rod bracket 401.

[0081] A handle seat 123 is fixedly connected to the surface of the drive disk 121 and is located on one side of the arc-shaped hole frame 402. A positioning head 124 and a positioning hole 403 are respectively provided on the surface of the handle seat 123 and the position of the arc-shaped hole frame 402. The positioning head 124 and the positioning hole 403 are engaged and fixed.

[0082] Specifically, the right fixed seat 400 is fixed to the outer shell of the double-layer hollow roller body 1 through the connecting rod frame 401. The arc-shaped hole frame 402 fixed between the connecting rod frames 401 provides a limit and operating basis for the adjustment of the drive disk 121. The handle seat 123 on the drive disk 121 makes it easy for the operator to rotate the drive disk 121 and thus adjust the position of the convex strip 2.

[0083] The positioning head 124 of the handle base 123 engages with the positioning hole 403 of the arc-shaped hole frame 402. The two sets of positioning heads 124, together with multiple sets of positioning holes 403, can achieve precise positioning of the drive disc 121 in multiple positions, ensuring that the position of the convex strip 2 is stable after adjustment. This not only facilitates quick operation but also ensures the accuracy when switching between indentation or cleaning modes, improving the practicality and ease of operation of the device.

[0084] In one embodiment of this utility model, such as Figures 1-6 As shown, the length of the outer guide groove 17 is greater than the length of the inner guide groove 14, and the height of the annular cleaning frame 3 protruding from the outer shell surface is lower than the height of the protruding strip 2 protruding from the outer shell surface.

[0085] Specifically, the inner guide groove 14 is mainly used for the sliding guidance of the protrusion 2, which can be used to achieve indentation or retraction cleaning by extending and contracting the protrusion 2; while the outer guide groove 17 not only needs to adapt to the movement of the protrusion 2, but also needs to provide sliding space for the annular cleaning frame 3. The longer outer guide groove 17 can ensure that the annular cleaning frame 3 has enough stroke to slide along the outer guide groove 17, complete the comprehensive cleaning of the protrusion 2, the arc-shaped blade holder 16 and other components, and avoid incomplete cleaning due to insufficient space.

[0086] When the device is used for creasing, the convex strips 2 of the upper and lower rollers need to mesh with each other to squeeze the cardboard to form a crease. If the annular cleaning frame 3 protrudes too high, it will contact the other roller before the convex strips 2, hindering the normal creasing of the convex strips 2. A lower protrusion height can ensure that the convex strips 2 can cooperate smoothly with the opposite roller, while avoiding the annular cleaning frame 3 interfering with the installation distance between the upper and lower rollers, ensuring that the creasing operation is carried out normally.

[0087] In one embodiment of this utility model, such as Figures 1-6 As shown, a gentle platform 131 is integrally formed at the highest point of the inner wall of the arc-shaped guide groove 13;

[0088] Multiple sets of smooth platforms 131 are provided, and the multiple sets of smooth platforms 131 are evenly arranged on the inner wall of the arc-shaped guide groove 13, so that the inner wall of the arc-shaped guide groove 13 is generally stepped.

[0089] A dustproof air inlet seat 42 communicating with the interior of the hollow cavity 100 is provided on one side surface of the double-layer hollow roller body 1 near the left connecting part 200.

[0090] Specifically, the flat platform 131 is integrally formed on the inner wall of the arc-shaped guide groove 13 and multiple sets are provided, making the inner wall of the guide groove stepped. The flat platform 131 can provide stable support for the guide shaft 21 of the protrusion 2. When the guide shaft 21 slides to the highest point, it can accurately stop on the flat platform 131, avoiding displacement of the guide shaft 21 due to device vibration, ensuring the stable protrusion height of the protrusion 2, and thus ensuring consistent crease depth. Multiple sets of stepped flat platforms 131 can also realize multi-level height adjustment of the protrusion 2, adapting to more diverse cardboard creasing needs.

[0091] The dustproof air inlet seat 42 is located on the side surface of the double-layer hollow roller body 1 near the left connecting part 200 and is connected to the hollow cavity 100. When the hollow cavity 100 is dusted through the one-way dust extraction socket 4, the dustproof air inlet seat 42 can balance the air pressure inside and outside the cavity to prevent excessive negative pressure from damaging the roller body structure. At the same time, it can filter the air entering the hollow cavity 100 to prevent external dust from entering the cavity with the airflow and contaminating the collected impurities or adhering to the protrusions 2 and cleaning components, ensuring the cleanliness of the device and reducing the frequency of subsequent maintenance.

[0092] In summary, the automatic cardboard creasing device of this utility model has high creasing accuracy. The height of the convex strip 2 can be precisely adjusted through the arc-shaped guide groove 13 and the positioning snap-fit ​​structure to adapt to different crease requirements, with a crease position error within ±0.1mm. Cleaning does not require manual cleaning of each strip, and the convex strip 2 can be quickly scraped off and deeply cleaned, greatly reducing the cleaning time per cycle and avoiding damage to the convex strip 2, thus extending its lifespan. The compact structure integrates creasing and cleaning functions, saving space, and is simple to operate with low maintenance costs, making it suitable for use by personnel with different technical skills.

[0093] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0095] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic cardboard creasing device, characterized in that, include: Double-layer hollow roller body (1): A column groove (11) is opened on one end surface. A drive column (12) is rotatably connected to the inner wall of the column groove (11). An arc-shaped guide groove (13) is evenly opened on the surface of the drive column (12). The depth of the arc-shaped guide groove (13) gradually decreases from one end to the other end. The protruding strip (2) is slidably connected to the inner wall of the inner guide groove (14) on the inner shell surface of the double-layer hollow roller body (1), and a spring (15) is fixedly connected between it and the inner wall of the inner guide groove (14). An arc-shaped knife holder (16) is fixedly connected at the port of the inner guide groove (14) and sleeved on the outside of the protruding strip (2). One end of the protruding strip (2) passes through the outer guide groove (17) on the outer shell surface of the double-layer hollow roller body (1) and exits outside the shell. The protruding strip (2) has its own guide shaft (21). One end of the guide shaft (21) passes through the through hole in the inner wall of the inner guide groove (14) and enters the column groove (11), and is slidably connected to the inner wall of the arc-shaped guide groove (13). Annular cleaning frame (3): symmetrically slidably connected to the inner wall of the outer guide groove (17) and located outside the protrusion (2). The cleaning end (31) of the annular cleaning frame (3) passes through the outer guide groove (17) into the hollow cavity (100) of the double-layer hollow roller body (1) and is fixedly connected with a cleaning brush head (32). The cleaning brush head (32) is in contact with the inner shell surface. One-way dust extraction socket (4): The inner wall of the mounting hole (41) is disposed on the surface of the housing and communicates with the interior of the hollow cavity (100).

2. The automatic cardboard creasing device according to claim 1, characterized in that, The drive column (12) is integrally formed with a drive disk (121) on one end surface outside the column groove (11), and is slidably connected to the end face of the double-layer hollow roller body (1). The drive disk (121) has a connecting shaft hole (122) on its surface, and the double-layer hollow roller body (1) is integrally formed with a left connecting part (200) on one end surface away from the column groove (11). The outer shell surface of the double-layer hollow roller body (1) is fixedly connected to the left positioning seat (300) and the right fixing seat (400), respectively, and is located outside the outer guide groove (17); The right fixing seat (400) is located outside the drive disk (121) and is slidably connected to the outer end face of the drive disk (121). The right fixing seat (400) has a right connecting part (500) integrally formed at the position corresponding to the connecting shaft hole (122) on its surface. One end of the right connecting part (500) is located inside the connecting shaft hole (122) and is slidably connected to the inner wall of the connecting shaft hole (122). Both the left connecting part (200) and the right connecting part (500) have connecting keyways (600) on their surfaces. One end of the connecting key shaft is inserted into the connecting keyway (600) and is fixedly connected to the inner wall of the connecting keyway (600) by a fixing bolt (601).

3. The automatic cardboard creasing device according to claim 2, characterized in that, Magnets (301) are provided on the surfaces of the left positioning seat (300) and the right fixing seat (400) at positions corresponding to the annular cleaning frame (3), and are magnetically fixed to the surface of the annular cleaning frame (3).

4. The automatic cardboard creasing device according to claim 2, characterized in that, One end of the connecting rod frame (401) of the right fixed seat (400) is fixedly connected to the surface of the outer shell, and an arc-shaped hole frame (402) is fixedly connected between the surfaces of the connecting rod frame (401). The drive disc (121) is fixedly connected to a handle seat (123) and located on one side of the arc-shaped hole frame (402). The handle seat (123) is provided with a positioning head (124) and a positioning hole (403) respectively at the corresponding positions of the arc-shaped hole frame (402). The positioning head (124) and the positioning hole (403) are engaged and fixed.

5. The automatic cardboard creasing device according to claim 1, characterized in that, The length of the outer guide groove (17) is greater than the length of the inner guide groove (14), and the height of the annular cleaning frame (3) protruding from the outer shell surface is lower than the height of the protruding strip (2) protruding from the outer shell surface.

6. The automatic cardboard creasing device according to claim 1, characterized in that, A gentle platform (131) is integrally formed at the highest point of the inner wall of the arc-shaped guide groove (13). The smooth platform (131) is provided in multiple sets, and the multiple sets of smooth platforms (131) are evenly arranged on the inner wall of the arc-shaped guide groove (13), so that the inner wall of the arc-shaped guide groove (13) is stepped as a whole. The double-layer hollow roller body (1) has a dustproof air inlet seat (42) on one side surface near the left connecting part (200) that communicates with the interior of the hollow cavity (100).

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