Inner frame paper cutting device
By using the adjustment and positioning mechanisms of the inner frame paper cutting device, the problem of needing to replace the entire device after the cutter wears out is solved, thus achieving the effects of reducing costs and improving efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HONGTA TOBACCO (GROUP) CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-21
AI Technical Summary
The existing inner frame paper cutter needs to be replaced as a whole after it wears out, which increases production costs and reduces production efficiency. The modular cutter replacement operation is complicated and affects production efficiency.
Design an inner frame paper cutting device. Through adjustment and positioning mechanisms, the cutter and the cutter guard are made to cooperate. The relative position of the cutter is changed by adjusting the component, so as to avoid directly replacing the cutter and only replace the worn blade.
It extends the cutter replacement cycle, reduces production costs, improves production efficiency, simplifies the adjustment process, and ensures cutting results.
Smart Images
Figure CN224144824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tobacco processing technology, and in particular to an inner frame paper cutting device. Background Technology
[0002] In tobacco production and processing, packaging machines are needed to package cartons. During operation, these machines use inner frame paper cutters to cut the roll-type inner frame paper. These inner frame paper cutters typically use a shearing method, and due to the high production speed of packaging machines, the inner frame paper cutters wear out quickly. Most existing inner frame paper cutters are one-piece cutters, which cannot be adjusted after wear and must be replaced entirely, increasing production costs and reducing efficiency. While modular cutters allow for blade replacement only after wear, reducing production costs, the replacement process is cumbersome and time-consuming, hindering further improvements in production efficiency. Utility Model Content
[0003] The purpose of this invention is to provide an inner frame paper cutting device that can reduce production costs and improve production efficiency.
[0004] To achieve this objective, the present invention adopts the following technical solution:
[0005] The inner frame paper cutting device includes:
[0006] Base shaft;
[0007] The adjustment mechanism includes an adjustment member configured as a tube, the adjustment member being movably sleeved on the base shaft, and the outer wall of the adjustment member being provided with an adjustment surface that is inclined relative to the axis of the base shaft;
[0008] The positioning mechanism includes a first positioning component and a second positioning component, wherein the first positioning component is fixedly disposed at the first end of the base shaft, and the second positioning component is disposed on the adjusting member;
[0009] The tool assembly includes multiple tool guards and multiple cutting blades. The multiple tool guards are circumferentially spaced along the base axis. Both ends of each tool guard are fixedly connected to the first positioning component and the second positioning component, respectively, so that the multiple tool guards cooperate with the adjustment component, the first positioning component and the second positioning component to form a storage cavity. The multiple cutting blades are movably disposed in the storage cavity in a one-to-one correspondence with the multiple tool guards, and the cutting edge on each cutting blade can extend out of the storage cavity through the blade groove on the corresponding tool guard.
[0010] Each of the cutters has a contact surface on the side near the adjusting member that is inclined in the same direction as the adjusting surface. The contact surface abuts against the adjusting surface. When the adjusting member is moved along the axial direction of the base shaft, the adjusting member can push each of the cutters toward the direction of the corresponding cutter guard plate.
[0011] As a further technical solution, the adjusting surface extends circumferentially along the base shaft to form an annular surface, and from the first positioning component to the second positioning component, the adjusting surface is inclined towards the axis of the base shaft, and the abutting surface is correspondingly provided with the adjusting surface.
[0012] As a further technical solution, the second end of the base shaft is provided with an external thread, and the inner wall of the adjusting member is correspondingly provided with an internal thread, and the adjusting member is threadedly connected to the second end of the base shaft.
[0013] As a further technical solution, from the first positioning component to the second positioning component, the adjusting member is provided with a plurality of adjusting surfaces in sequence, and the inner side of each cutter is provided with a plurality of abutting surfaces corresponding one-to-one with the plurality of adjusting surfaces.
[0014] As a further technical solution, the adjustment mechanism also includes a first guide auxiliary component and a second guide auxiliary component;
[0015] The first end of the base shaft is provided with a limiting step, and the end face of the limiting step near the adjusting member is provided with a first limiting ring groove extending circumferentially along the base shaft. The first guide auxiliary component is movably disposed on the end face of the adjusting member near the limiting step and slides in cooperation with the first limiting ring groove.
[0016] The second positioning component is provided with a second limiting ring groove extending circumferentially along the base axis. The middle part of the adjusting component is provided with a limiting auxiliary platform. The second guiding auxiliary component is movably disposed on the limiting auxiliary platform and slides in cooperation with the second limiting ring groove.
[0017] As a further technical solution, the first guide auxiliary component includes a plurality of first auxiliary guide shafts. The end face of the adjusting member near the limiting step is provided with a plurality of first guide channels circumferentially spaced along the base axis. The second ends of the plurality of first auxiliary guide shafts are movably inserted into the plurality of first guide channels in a corresponding manner. The first ends of the plurality of first auxiliary guide shafts are all slidably disposed in the first limiting ring groove.
[0018] The second guide auxiliary component includes a plurality of second auxiliary guide shafts. A plurality of second guide channels are arranged circumferentially along the base axis on the limiting platform. The second ends of the plurality of second auxiliary guide shafts are movably inserted into the plurality of second guide channels in a corresponding manner. The first ends of the plurality of second auxiliary guide shafts are all slidably disposed in the second limiting ring groove.
[0019] As a further technical solution, the first guide auxiliary component also includes a plurality of first elastic elements, each of the first elastic elements being disposed between the second end of the corresponding first auxiliary guide shaft and the bottom wall of each first guide channel;
[0020] The second guide auxiliary component further includes a plurality of second elastic elements, each of which is disposed between the second end of the corresponding second auxiliary guide shaft and the bottom wall of the second guide channel.
[0021] As a further technical solution, the adjustment mechanism also includes an adjustment handle, which is fixedly disposed at the end of the adjustment member away from the base shaft.
[0022] As a further technical solution, each of the tool guards is provided with a first connecting plate at its first end and a second connecting plate at its second end, and both the first connecting plate and the second connecting plate extend toward the base shaft;
[0023] The first positioning component includes a first retaining ring, a first end cap, and a first limiting ring. The first limiting ring is fixedly disposed on the base shaft on the side opposite to the limiting step. The first retaining ring abuts against the limiting step. The first end cap is disposed between the first retaining ring and the first limiting ring and is fixedly connected to the first retaining ring. Each of the first connecting plates is sandwiched between the first retaining ring and the first end cap.
[0024] The second positioning component includes a second retaining ring, a second end cap, and a second limiting ring. The second retaining ring and the second end cap are both sleeved on the adjusting member. The second end cap is fixedly connected to the second retaining ring. Each of the second connecting plates is sandwiched between the second retaining ring and the second end cap. The second limiting ring is fixedly disposed on the adjusting member and is located on the side of the second end cap opposite to the first positioning component.
[0025] As a further technical solution, a first limiting baffle is provided on the end face of the first end cover near the second positioning component. The first limiting baffle is provided near the edge of the first end cover and extends in a ring shape along the circumference of the base shaft. When each of the first connecting plates is sandwiched between the first retaining ring and the first end cover, the first end of each of the tool guard plates is limited to the first limiting baffle and the side wall of the first retaining ring.
[0026] A second limiting baffle is provided on the end face of the second end cover near the first positioning component. The second limiting baffle is provided near the edge of the second end cover and extends in a ring shape along the circumference of the base shaft. When each of the second connecting plates is sandwiched between the second retaining ring and the second end cover, the second end of each of the tool guard plates is limited to the second limiting baffle and the second retaining ring.
[0027] Compared with the prior art, the technical advantages of the inner frame paper cutting device provided by this utility model are as follows:
[0028] Because a tubular adjusting component with an adjustable surface is movably sleeved on the base shaft, multiple cutter guards, the adjusting component, the first positioning assembly, and the second positioning assembly cooperate to form a storage cavity. Multiple cutters with abutment surfaces are movably positioned within the storage cavity, corresponding one-to-one with the multiple cutter guards, and the abutment surfaces abut against the adjusting surface. Therefore, by moving the adjusting component, the abutment amount between each abutment surface and the adjusting surface is changed, thereby altering the relative position of the adjusting component and the multiple cutters, and thus changing the extension amount of each cutting edge from the groove on the corresponding cutter guard outside the storage cavity. Thus, during processing, when each cutting edge is worn, there is no need to directly replace the cutter. By moving the adjusting surface, each cutter moves closer to its corresponding cutter guard, ensuring that the current extension amount of each cutting edge from its corresponding cutter guard outside the storage cavity meets the cutting edge requirements during the inner frame paper cutting process. This guarantees the cutting effect of the inner frame paper in subsequent processing. Throughout the process, firstly, by setting adjustment components, the cycle of changing the cutter can be extended, reducing the frequency of cutter replacement, thereby lowering production costs and improving production efficiency. Secondly, by moving the adjustment components, the amount by which each blade extends out of the storage cavity from its corresponding blade guard plate can be adjusted, making the operation simple and convenient, saving adjustment time and further improving production efficiency. Thirdly, when the wear of each blade can no longer meet the cutting requirements of the inner frame paper, only the cutter needs to be replaced, without replacing the entire inner frame paper cutting device, thereby further reducing production costs. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0030] Figure 1 This is a partial structural disassembly diagram of the inner frame paper cutting device provided in this embodiment of the utility model;
[0031] Figure 2This is a cross-sectional view of the inner frame paper cutting device provided in this embodiment of the utility model;
[0032] Figure 3 This is a cross-sectional view of a portion of the structure of the inner frame paper cutting device provided in this embodiment of the utility model;
[0033] Figure 4 This is a schematic diagram of the structure of the inner frame paper cutting device provided in this embodiment of the utility model.
[0034] In the picture:
[0035] 100. Base shaft; 110. Limiting step; 111. First limiting annular groove;
[0036] 200. Adjustment mechanism; 210. Adjustment component; 2101. Adjustment surface; 211. Limiting auxiliary platform; 2111. Second guide channel; 212. First guide channel; 220. First guide auxiliary assembly; 221. First auxiliary guide shaft; 222. First elastic element; 230. Second guide auxiliary assembly; 231. Second auxiliary guide shaft; 232. Second elastic element; 240. Adjustment handle;
[0037] 300. Positioning mechanism; 310. First positioning component; 311. First retaining ring; 312. First end cap; 313. First limiting ring; 314. First limiting baffle; 320. Second positioning component; 3201. Second limiting ring groove; 321. Second retaining ring; 322. Second end cap; 323. Second limiting ring; 324. Second limiting baffle.
[0038] 400. Tool assembly; 410. Tool guard plate; 411. Tool groove; 412. First connecting plate; 413. Second connecting plate; 420. Cutting blade; 421. Blade; 422. Abutment surface. Detailed Implementation
[0039] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.
[0040] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0041] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.
[0042] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.
[0043] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values not using relative terms should also be disclosed as specific values with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.
[0044] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.
[0045] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.
[0046] Combination Figures 1 to 4 As shown, the inner frame paper cutting device provided in this embodiment is used to cut the inner frame paper during the tobacco production and processing process. During the inner frame paper cutting process, it ensures the cutting effect while reducing production costs and improving production efficiency. Specifically, the inner frame paper cutting device includes a base shaft 100, an adjusting mechanism 200, a positioning mechanism 300, and a tool assembly 400. The adjusting mechanism 200 includes a tubular adjusting member 210, which is movably sleeved on the base shaft 100. The outer wall of the adjusting member 210 is provided with an adjusting surface 2101 that is inclined relative to the axis of the base shaft 100. The positioning mechanism 300 includes a first positioning component 310 and a second positioning component 320. The first positioning component 310 is fixedly disposed at the first end of the base shaft 100, and the second positioning component 320 is disposed on the adjusting member 210. The tool assembly 400 includes multiple tool guards 410 and multiple cutters 420. The multiple tool guards 410 are distributed at intervals along the circumference of the base shaft 100, and the two ends of each tool guard 410 are respectively connected to the first tool guard. A positioning component 310 and a second positioning component 320 are fixedly connected so that multiple cutter guards 410 cooperate with the adjusting member 210, the first positioning component 310 and the second positioning component 320 to form a storage cavity. Multiple cutters 420 and multiple cutter guards 410 are movably disposed in the storage cavity in a one-to-one correspondence, and the cutting edge 421 on each cutter 420 can extend out of the storage cavity through the cutting groove 411 on the corresponding cutter guard 410. Each cutter 420 has an abutting surface 422 on the side near the adjusting member 210 with the same inclination direction as the adjusting surface 2101. The abutting surface 422 abuts against the adjusting surface 2101. The adjusting member 210 moves along the axial direction of the base shaft 100, and the adjusting member 210 can push each cutter 420 to move closer to the corresponding cutter guard 410.
[0047] Since the tubular adjusting member 210 with adjusting surface 2101 is movably sleeved on the base shaft 100, multiple cutter guards 410 cooperate with the adjusting member 210, the first positioning component 310 and the second positioning component 320 to form a storage cavity. Multiple cutters 420 with abutting surfaces 422 are movably disposed in the storage cavity in a one-to-one correspondence with the multiple cutter guards 410, and the multiple abutting surfaces 422 abut against the adjusting surface 2101. Therefore, by moving the adjusting member 210, the abutting amount between each abutting surface 422 and the adjusting surface 2101 is changed, thereby changing the relative position between the adjusting member 210 and the multiple cutters 420, and thus changing the amount by which each blade 421 extends out of the storage cavity from the cutter groove 411 on the corresponding cutter guard 410. Therefore, during the processing, when each blade 421 is worn, there is no need to directly replace the cutter 420. By moving the adjustment surface 2101, each cutter 420 is moved towards the corresponding cutter guard plate 410, so that the current extension of each blade 421 from the corresponding cutter guard plate 410 outside the storage cavity meets the demand of the blade 421 during the inner frame paper cutting process. In this way, the cutting effect of the inner frame paper in the subsequent processing is guaranteed. Throughout the process, firstly, by setting the adjustment component 210, the cycle of replacing the cutter 420 can be extended, reducing the frequency of cutter 420 replacement, thereby reducing production costs and improving production efficiency; secondly, by moving the adjustment component 210, the amount by which each blade 421 extends out of the storage cavity from the corresponding cutter guard plate 410 can be adjusted, which is simple and convenient to operate, saving adjustment time and further improving production efficiency; thirdly, when the wear of each blade 421 can no longer meet the cutting requirements of the inner frame paper, only the cutter 420 needs to be replaced, without replacing the entire inner frame paper cutting device, thereby further reducing production costs.
[0048] The number and form of the blades 421 on each cutter 420 are set according to the actual needs of cutting the inner frame paper, and no specific limit is made here.
[0049] Preferably, in this embodiment, the adjusting surface 2101 extends circumferentially along the base shaft 100 in an annular shape, and from the first positioning component 310 to the second positioning component 320, the adjusting surface 2101 is inclined towards the axis of the base shaft 100, and the abutment surface 422 is correspondingly arranged with the adjusting surface 2101. By setting the adjusting surface 2101 as an annular surface, when adjusting the extension amount of the blade 421, during the process of pulling the adjusting member 210 towards the second positioning component 320, it is ensured that the extension amount of each blade 421 is the same; at the same time, even if the adjusting member 210 rotates relative to the base shaft 100, it can be ensured that each cutter 420 moves an equal distance towards the corresponding cutter guard plate 410, so as to further improve the cutting effect of the blade 421.
[0050] Preferably, the second end of the base shaft 100 is provided with an external thread, and the inner wall of the adjusting member 210 is correspondingly provided with an internal thread. The adjusting member 210 is threadedly connected to the second end of the base shaft 100. On the one hand, the adjusting member 210 can be moved by rotating it relative to the base shaft 100, thereby completing the adjustment process of the blade 421 extension amount. The operation is simple and the adjustment accuracy is guaranteed. On the other hand, after the blade 421 extension amount is adjusted, the internal and external threads cooperate to limit the relative position of the adjusting member 210 and the base shaft 100, preventing the adjusting member 210 from moving autonomously towards the first positioning component 310, which would cause each blade 421 to retract towards the inside of the storage cavity, resulting in poor cutting effect or cutting failure during the inner frame paper cutting process.
[0051] In other embodiments, the cross-sectional shape of the adjusting surface 2101 along the axial direction of the base axis 100 is set to a polygon, corresponding to the number of cutters 420. For example, along the circumference of the base axis 100, when there are six cutters 420, the cross-sectional shape of the adjusting surface 2101 along the axial direction of the base axis 100 is set to a hexagon, and when there are four cutters 420, the cross-sectional shape of the adjusting surface 2101 along the axial direction of the base axis 100 is set to a rectangle, etc. In this embodiment, when adjusting the extension amount of each blade 421, it is not necessary to rotate the adjusting member 210 along the circumference of the base axis 100; simply pull the adjusting member 210 towards the direction closer to the second positioning component 320. The adjusting member 210 is provided with an adjusting threaded hole, and an adjusting screw is provided corresponding to the adjusting threaded hole. After the extension of the blade 421 is adjusted, the adjusting screw is turned so that the adjusting screw abuts against the base shaft 100, thereby limiting the relative position of the adjusting member 210 and the base shaft 100 and preventing the adjusting member 210 from moving autonomously toward the first positioning component 310.
[0052] Preferably, from the first positioning component 310 to the second positioning component 320, the adjusting member 210 is provided with a plurality of adjusting surfaces 2101 in sequence, and the inner side of each cutter 420 is provided with a plurality of abutting surfaces 422 corresponding to the plurality of adjusting surfaces 2101.
[0053] In this embodiment, from the first positioning component 310 to the second positioning component 320, the adjusting member 210 is provided with three adjusting surfaces 2101 in sequence, and a limiting boss is formed between two adjacent adjusting surfaces 2101. Correspondingly, the inner side of each cutter 420 is provided with three abutting surfaces 422 corresponding to the three adjusting surfaces 2101, and an abutting boss is formed between two adjacent abutting surfaces 422. In the initial state, the limiting boss abuts against the corresponding abutting boss to limit the relative position of the adjusting member 210 and each cutter, and to avoid the situation where the distance between the adjusting member 210 and the first positioning component 310 is too small, resulting in the cutters getting stuck. At the same time, the three adjusting surfaces 2101 in sequence on the adjusting member 210 ensure the adjustment effect of the blade extension amount of the cutting edge 421 while reducing the processing difficulty of the adjusting member 210.
[0054] In some other embodiments, the number of adjustment surfaces 2101 provided on the adjustment member 210 in the direction from the first positioning component 310 to the second positioning component 320 can be appropriately increased or decreased according to actual needs, and is not limited to three. The number of inner abutment surfaces 422 of each cutter 420 is set in correspondence with the number of adjustment surfaces 2101 on the adjustment member 210.
[0055] Preferably, the adjustment mechanism 200 further includes a first guide auxiliary component 220 and a second guide auxiliary component 230; a limiting step 110 is provided at the first end of the base shaft 100, and a first limiting annular groove 111 extending circumferentially along the base shaft 100 is provided on the end face of the limiting step 110 near the adjustment member 210; the first guide auxiliary component 220 is movably disposed on the end face of the adjustment member 210 near the limiting step 110 and slides in cooperation with the first limiting annular groove 111; a second limiting annular groove 3201 extending circumferentially along the base shaft 100 is provided on the second positioning component 320, and a limiting auxiliary platform 211 is provided in the middle of the adjustment member 210; the second guide auxiliary component 230 is movably disposed on the limiting auxiliary platform 211 and slides in cooperation with the second limiting annular groove 3201.
[0056] By setting a first guide auxiliary component 220 that cooperates with the limiting step 110 and the first limiting ring groove 111, and a second guide auxiliary component 230 that cooperates with the limiting auxiliary platform 211 and the second limiting ring groove 3201, in the process of rotating the adjusting member 210 to change the extension amount of each blade 421, on the one hand, in the axial direction of the base shaft 100, the relative position of the adjusting member 210 and the base shaft 100 is restricted, so as to prevent the adjusting member 210 from moving autonomously towards the first positioning component 310; on the other hand, the adjusting member 210 is guided to rotate circumferentially around the base shaft 100, and the convenience of the adjusting member 210 when rotating is ensured.
[0057] Specifically, the first guide auxiliary component 220 includes a plurality of first auxiliary guide shafts 221. The adjusting member 210 has a plurality of first guide channels 212 spaced circumferentially along the base axis 100 on the end face near the limiting step 110. The second ends of the plurality of first auxiliary guide shafts 221 are movably inserted into the plurality of first guide channels 212 one by one. The first ends of the plurality of first auxiliary guide shafts 221 are all slidably disposed in the first limiting ring groove 111. The second guide auxiliary component 230 includes a plurality of second auxiliary guide shafts 231. The limiting step 110 has a plurality of second guide channels 2111 spaced circumferentially along the base axis 100. The second ends of the plurality of second auxiliary guide shafts 231 are movably inserted into the plurality of second guide channels 2111 one by one. The first ends of the plurality of second auxiliary guide shafts 231 are all slidably disposed in the second limiting ring groove 3201.
[0058] In this embodiment, eight first guide channels 212 are provided at intervals along the circumference of the base axis 100 on the end face of the adjusting member 210 near the limiting step 110. Correspondingly, eight first auxiliary guide shafts 221 are provided. The eight first guide channels 212 all extend along the axial direction of the base axis 100. The second ends of the eight first auxiliary guide shafts 221 are movably inserted into the eight first guide channels 212, and the first ends of the eight first auxiliary guide shafts 221 are slidably engaged with the first limiting ring groove 111. Eight second guide channels 2111 are provided at intervals along the circumference of the base axis 100 on the limiting step 110. Correspondingly, eight second auxiliary guide shafts 231 are provided. The second ends of the eight second auxiliary guide shafts 231 are movably inserted into the eight second guide channels 2111, and the first ends of the eight second auxiliary guide shafts 231 are slidably engaged with the second limiting ring groove 3201. With this configuration, during the adjustment of the blade 421 extension, when the adjusting member 210 moves away from the first positioning component 310, the insertion depth of the second end of each second auxiliary guide shaft 231 in the corresponding second guide channel 2111 gradually increases, while the insertion depth of the second end of each first auxiliary guide shaft 221 in the corresponding first guide channel 212 gradually decreases. Similarly, when the adjusting member 210 moves closer to the first positioning component 310, the insertion depth of the second end of each second auxiliary guide shaft 231 in the corresponding second guide channel 2111 gradually decreases, while the insertion depth of the second end of each first auxiliary guide shaft 221 in the corresponding first guide channel 212 gradually increases. This ensures the stability of the adjusting member 210 when moving axially along the base shaft 100, while the stability of the adjusting member 210 when rotating circumferentially along the base shaft 100 is ensured by setting the first limiting ring groove 111 and the second limiting ring groove 3201. The number of the second guide channel 2111 and the first guide channel 212 can be increased or decreased according to actual needs, and is not limited to eight in this embodiment. The number of each first auxiliary guide shaft 221 and each second auxiliary guide shaft 231 is set to correspond to the number of the guide channels.
[0059] In some other embodiments, in order to further improve the stability of the adjusting member 210 when rotating circumferentially along the base shaft 100, the end faces of the first ends of each first auxiliary guide shaft 221 and each second auxiliary guide shaft 231 are all set as spherical surfaces, or, ball bearings are movably provided at the first ends of each first auxiliary guide shaft 221 and each second auxiliary guide shaft 231.
[0060] Preferably, the first guide auxiliary component 220 further includes a plurality of first elastic elements 222, each first elastic element 222 being disposed between the second end of the corresponding first auxiliary guide shaft 221 and the bottom wall of each first guide channel 212; the second guide auxiliary component 230 further includes a plurality of second elastic elements 232, each second elastic element 232 being disposed between the second end of the corresponding second auxiliary guide shaft 231 and the bottom wall of the second guide channel 2111.
[0061] By setting multiple first elastic elements 222 and multiple second elastic elements 232, when the adjusting member 210 moves away from the first positioning component 310, the multiple second elastic elements 232 are gradually compressed, while the pressure on the multiple first elastic elements 222 gradually decreases and they gradually extend autonomously; when the adjusting member 210 moves closer to the first positioning component 310, the pressure on the multiple second elastic elements 232 gradually decreases and they gradually extend autonomously, while the multiple first elastic elements 222 are gradually compressed. In this way, it is ensured that during the adjustment of the blade extension amount, the adjusting member 210 is always limited to the first guide auxiliary component 220 and the second guide auxiliary component 230 in the axial direction of the base shaft 100, thereby ensuring the stability of the adjusting member 210 when moving in the axial direction of the base shaft 100, and ensuring the stability of the inner frame paper cutting device after the blade extension amount adjustment is completed.
[0062] In order to further improve the convenience of adjustment during the adjustment of the blade extension 421, in this embodiment, the adjustment mechanism 200 also includes an adjustment handle 240. The adjustment handle 240 is fixedly disposed at one end of the adjustment member 210 away from the base shaft 100, and a friction part is provided on the outer wall of the adjustment handle 240 to increase the friction force.
[0063] Preferably, each tool guard plate 410 has a first connecting plate 412 at its first end and a second connecting plate 413 at its second end, with both the first connecting plate 412 and the second connecting plate 413 extending toward the base shaft 100; the first positioning assembly 310 includes a first retaining ring 311, a first end cap 312, and a first limiting ring 313, with the first limiting ring 313 fixedly disposed on the base shaft 100 on the side opposite to the limiting step 110, the first retaining ring 311 abutting against the limiting step 110, and the first end cap 312 disposed between the first retaining ring 311 and the first limiting ring 313 and fixedly connected. In the first retaining ring 311, each first connecting plate 412 is sandwiched between the first retaining ring 311 and the first end cap 312; the second positioning component 320 includes a second retaining ring 321, a second end cap 322 and a second limiting ring 323. The second retaining ring 321 and the second end cap 322 are both sleeved on the adjusting member 210. The second end cap 322 is fixedly connected to the second retaining ring 321. Each second connecting plate 413 is sandwiched between the second retaining ring 321 and the second end cap 322. The second limiting ring 323 is fixedly disposed on the adjusting member 210 and is located on the side of the second end cap 322 away from the first positioning component 310.
[0064] The first retaining ring 313 and the retaining step 110 cooperate to fix the first retaining ring 311 and the first end cap 312 between the first retaining ring 313 and the retaining step 110. Since each first connecting plate 412 is sandwiched between the first retaining ring 311 and the first end cap 312, and each second connecting plate 413 is sandwiched between the second retaining ring 321 and the second end cap 322, each cutter guard plate 410 cooperates with the first positioning component 310 and the second positioning component 320 to limit the relative position of each cutter guard plate 410 in the axial and circumferential directions of the base shaft 100. This prevents the cutter guard plates 410 from moving axially or rotating circumferentially during the movement of the adjusting component 210, thereby further ensuring the stability of the inner frame paper cutting device and the cutting effect. Furthermore, since the second limiting ring 323 is located on the side of the second end cap 322 opposite to the first positioning component 310, it further restricts the relative position of the second retaining ring 321 and the second end cap 322 in the axial direction of the base shaft 100, and avoids interference with the second retaining ring 321 and the second end cap 322. In this embodiment, the first end cap 312 is fixedly connected to the first retaining ring 311, and the second end cap 322 is fixedly connected to the second retaining ring 321, both of which are connected by threaded fasteners. In other embodiments, the connection method can be adapted to meet actual needs, and is not limited to this embodiment.
[0065] Furthermore, a first limiting baffle 314 is provided on the end face of the first end cover 312 near the second positioning component 320. The first limiting baffle 314 is provided near the edge of the first end cover 312 and extends in a ring shape along the circumference of the base shaft 100. When each of the first connecting plates 412 is sandwiched between the first retaining ring 311 and the first end cover 312, the first end of each tool guard plate 410 is limited to the side wall between the first limiting baffle 314 and the first retaining ring 311. A second limiting baffle 324 is provided on the end face of the second end cover 322 near the first positioning component 310. The second limiting baffle 324 is provided near the edge of the second end cover 322 and extends in a ring shape along the circumference of the base shaft 100. When each of the second connecting plates 413 is sandwiched between the second retaining ring 321 and the second end cover 322, the second end of each tool guard plate 410 is limited to the second limiting baffle 324 and the second retaining ring 321. This configuration further restricts the relative positions of each cutter guard plate 410, preventing the cutter guard plate 410 from shifting radially on the base shaft 100 during the cutting process, or the cutter guard plate 410 from directly separating from the first positioning component 310 and the second positioning component 320, thereby further improving the cutting effect, safety, and stability of the inner frame paper cutting device.
[0066] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.
[0067] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. An inner frame paper cutting apparatus, characterized by, include: Base shaft (100); The adjustment mechanism (200) includes an adjustment member (210) configured as a tube, the adjustment member (210) being movably sleeved on the base shaft (100), and the outer wall of the adjustment member (210) being provided with an adjustment surface (2101) that is inclined relative to the axis of the base shaft (100); The positioning mechanism (300) includes a first positioning component (310) and a second positioning component (320). The first positioning component (310) is fixedly disposed at the first end of the base shaft (100), and the second positioning component (320) is disposed on the adjusting member (210). The tool assembly (400) includes multiple tool guards (410) and multiple cutters (420). The multiple tool guards (410) are arranged circumferentially along the base shaft (100). The two ends of each tool guard (410) are fixedly connected to the first positioning component (310) and the second positioning component (320) respectively, so that the multiple tool guards (410) cooperate with the adjusting member (210), the first positioning component (310) and the second positioning component (320) to form a storage cavity. The multiple cutters (420) are movably disposed in the storage cavity in a one-to-one correspondence with the multiple tool guards (410), and the cutting edge (421) on each cutter (420) can extend out of the storage cavity through the corresponding cutting groove (411) on the tool guard (410). Each of the cutters (420) has an abutment surface (422) on the side near the adjusting member (210) that is inclined in the same direction as the adjusting surface (2101). The abutment surface (422) abuts against the adjusting surface (2101). When the adjusting member (210) moves along the axial direction of the base shaft (100), the adjusting member (210) can push each of the cutters (420) to move closer to the corresponding cutter guard plate (410).
2. The inner frame paper cutting apparatus according to claim 1, wherein The adjustment surface (2101) extends in a ring shape along the circumference of the base shaft (100), and from the first positioning component (310) to the second positioning component (320), the adjustment surface (2101) is inclined toward the axis of the base shaft (100), and the abutment surface (422) is correspondingly arranged with the adjustment surface (2101).
3. The inner frame paper cutting apparatus according to claim 2, wherein The second end of the base shaft (100) is provided with an external thread, and the inner wall of the adjusting member (210) is provided with an internal thread. The adjusting member (210) is threadedly connected to the second end of the base shaft (100).
4. The inner frame paper cutting apparatus according to claim 3, wherein From the first positioning component (310) to the second positioning component (320), the adjusting member (210) is provided with a plurality of adjusting surfaces (2101) in sequence, and the inner side of each cutter (420) is provided with a plurality of abutting surfaces (422) corresponding one-to-one with the plurality of adjusting surfaces (2101).
5. The inner frame paper cutting apparatus according to claim 3, wherein The adjustment mechanism (200) further includes a first guide auxiliary component (220) and a second guide auxiliary component (230); The first end of the base shaft (100) is provided with a limiting step (110). The limiting step (110) is provided with a first limiting annular groove (111) extending circumferentially along the base shaft (100) on the end face of the limiting step (110) near the adjusting member (210). The first guide auxiliary component (220) is movably disposed on the end face of the adjusting member (210) near the limiting step (110) and slides in cooperation with the first limiting annular groove (111). The second positioning component (320) is provided with a second limiting ring groove (3201) extending circumferentially along the base shaft (100). The middle part of the adjusting member (210) is provided with a limiting auxiliary platform (211). The second guiding auxiliary component (230) is movably disposed on the limiting auxiliary platform (211) and slides in cooperation with the second limiting ring groove (3201).
6. The inner frame paper cutting apparatus according to claim 5, wherein The first guide auxiliary component (220) includes a plurality of first auxiliary guide shafts (221). The adjusting member (210) has a plurality of first guide channels (212) spaced circumferentially along the base shaft (100) on the end face near the limiting step (110). The second ends of the plurality of first auxiliary guide shafts (221) are movably inserted into the plurality of first guide channels (212) in a corresponding manner. The first ends of the plurality of first auxiliary guide shafts (221) are all slidably disposed in the first limiting ring groove (111). The second guide auxiliary component (230) includes a plurality of second auxiliary guide shafts (231). The limiting auxiliary platform (211) is provided with a plurality of second guide channels (2111) circumferentially spaced along the base shaft (100). The second ends of the plurality of second auxiliary guide shafts (231) are movably inserted into the plurality of second guide channels (2111) in a corresponding manner. The first ends of the plurality of second auxiliary guide shafts (231) are all slidably disposed in the second limiting annular groove (3201).
7. The inner frame paper cutting apparatus according to claim 6, wherein The first guide auxiliary component (220) further includes a plurality of first elastic elements (222), each of the first elastic elements (222) being disposed between the second end of the corresponding first auxiliary guide shaft (221) and the bottom wall of each of the first guide channels (212); The second guide auxiliary component (230) further includes a plurality of second elastic elements (232), each of the second elastic elements (232) being disposed between the second end of the corresponding second auxiliary guide shaft (231) and the bottom wall of the second guide channel (2111).
8. The inner frame paper cutting apparatus according to claim 3, wherein The adjustment mechanism (200) further includes an adjustment handle (240), which is fixedly disposed at one end of the adjustment member (210) away from the base shaft (100).
9. The inner frame paper cutting device according to claim 5, characterized in that, Each of the tool guards (410) is provided with a first connecting plate (412) at its first end and a second connecting plate (413) at its second end. Both the first connecting plate (412) and the second connecting plate (413) extend toward the base shaft (100). The first positioning component (310) includes a first retaining ring (311), a first end cap (312), and a first limiting ring (313). The first limiting ring (313) is fixedly disposed on the base shaft (100) on the side opposite to the limiting step (110). The first retaining ring (311) abuts against the limiting step (110). The first end cap (312) is disposed between the first retaining ring (311) and the first limiting ring (313) and is fixedly connected to the first retaining ring (311). Each of the first connecting plates (412) is sandwiched between the first retaining ring (311) and the first end cap (312). The second positioning component (320) includes a second retaining ring (321), a second end cap (322), and a second limiting ring (323). The second retaining ring (321) and the second end cap (322) are both sleeved on the adjusting member (210). The second end cap (322) is fixedly connected to the second retaining ring (321). Each of the second connecting plates (413) is sandwiched between the second retaining ring (321) and the second end cap (322). The second limiting ring (323) is fixedly disposed on the adjusting member (210) and is located on the side of the second end cap (322) away from the first positioning component (310).
10. The inner frame paper cutting apparatus according to claim 9, wherein The first end cap (312) is provided with a first limiting baffle (314) near the end face of the second positioning component (320). The first limiting baffle (314) is provided near the edge of the first end cap (312) and extends in a ring shape along the circumference of the base shaft (100). When each of the first connecting plates (412) is sandwiched between the first retaining ring (311) and the first end cap (312), the first end of each of the tool guards (410) is limited to the first limiting baffle (314) and the side wall of the first retaining ring (311). The second end cap (322) is provided with a second limiting baffle (324) near the end face of the first positioning component (310). The second limiting baffle (324) is provided near the edge of the second end cap (322) and extends in a ring shape along the circumference of the base shaft (100). When each of the second connecting plates (413) is sandwiched between the second retaining ring (321) and the second end cap (322), the second end of each of the tool guards (410) is limited to the second limiting baffle (324) and the second retaining ring (321).