A paper machine slitter device

Abstract

The utility model relates to the production technical field of fruit bag paper, concretely is a paper machine slitting device, including driving shaft and driven shaft, the outer surface fixed mounting of driving shaft has a plurality of slitting cutter head spare, the position of driven shaft corresponding each slitting cutter head spare is fixedly installed with support disc, slitting cutter head spare includes two half circular rings and two half circular cutter heads, two half circular rings combination forms a whole circular ring, two half circular cutter heads combination forms a whole cutter head, and the adjusting mechanism for controlling half circular ring sliding and promoting two half circular rings lock is equipped on half circular ring, through setting slitting cutter head spare and adjusting mechanism, utilize the adjusting mechanism with screw rod, make two half circular rings butt joint after can quick lock as whole circular ring, ensure with driving shaft synchronous circumferential rotation, realized the quick installation and replacement of cutter head, reduced the equipment downtime, simultaneously through screw rod individual control two half circular cutter head sliding, thereby let operator according to actual slitting situation to cutter head position carries out slight correction.

Description

Technical Field

[0001] This utility model relates to the field of fruit bag paper production technology, and in particular to a paper machine slitting device. Background Technology

[0002] Fruit bag paper is a functional packaging paper specifically used for bagging fruits. Its core function is to protect fruit growth, improve appearance quality, and reduce pesticide residues through physical isolation and environmental control. It is a key material for enhancing the commercial value of fruits in modern agriculture. From the wide-width master rolls in paper mills to the specific-sized raw materials in bag-making plants, and finally to the finished fruit bags adapted to different fruits, each step requires a slitting device to precisely cut the paper into specifications that meet the requirements of subsequent processes.

[0003] A paper machine slitting device disclosed in Chinese Patent Publication No. CN217256543U allows for partial blade replacement via a detachable half-ring and electromagnetic unlocking, with spacing adjusted via positioning protrusions and track grooves. However, based on existing paper machine slitting devices and technologies in related fields, current installation components rely on electromagnetic blocks to attract metal moving plates, causing pins to disengage from keyways. The unlocking process requires power connection and operation of a switch group. If a power outage or electromagnetic block malfunction occurs (e.g., magnetic attraction failure), the cutter head cannot be disassembled, leading to passive maintenance. Furthermore, after installation, the cutter head and shaft are typically fixedly connected, making it impossible to make minute adjustments to the axial position of a single cutter head. If uneven paper cuts or dimensional deviations occur during slitting, the machine must be stopped and the cutter head reassembled for calibration, preventing real-time online correction. Moreover, slitting accuracy depends entirely on manual positioning and calibration during cutter head installation. Even a slight initial installation deviation can directly result in all slitting papers exceeding size limits, generating a large amount of waste. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a paper machine slitting device.

[0005] The objective of this utility model is achieved through the following technical solution: a paper machine slitting device, comprising a drive shaft and a driven shaft, wherein multiple slitting blade discs are fixedly mounted on the outer surface of the drive shaft, and a support disc is fixedly mounted on the driven shaft corresponding to the position of each slitting blade disc; each slitting blade disc comprises two semi-circular rings and two semi-circular blade discs, the two semi-circular rings being combined to form a complete circular ring, and the two semi-circular blade discs being combined to form a complete blade disc, wherein the two semi-circular rings and the two semi-circular blade discs are engaged by snap-fit, and the semi-circular blade discs are slidably engaged with the semi-circular rings, and the semi-circular rings are provided with an adjustment mechanism for controlling the sliding of the semi-circular rings and causing the two semi-circular rings to lock together.

[0006] Preferably, the outer surface of the semicircular ring is fixedly provided with a first edge and a second edge, the semicircular cutter disc is slidably disposed between the first edge and the second edge, one end of the first edge is fixedly provided with a first protrusion, the other end of the first edge is provided with a first groove adapted to the first protrusion, the end of the second edge away from the first protrusion is fixedly provided with a second protrusion, the other end of the second edge is provided with a second groove adapted to the second protrusion.

[0007] Preferably, one end of the semi-circular cutter head is fixedly provided with a third protrusion, and the other end of the semi-circular cutter head is provided with a third groove that matches the third protrusion.

[0008] Preferably, the adjustment mechanism includes a lead screw rotatably disposed inside the first protrusion, and a knob is fixedly provided at one end of the lead screw located outside the first edge.

[0009] Preferably, both the first protrusion and the second protrusion are provided with rotating holes, and bearings are embedded inside the rotating holes. A flexible layer is fixedly provided on the inner wall of the inner ring of the bearing, and the lead screw is inserted into the interior of the flexible layer.

[0010] Preferably, the third protrusion has a threaded hole that matches the position of the lead screw.

[0011] Preferably, the inner wall of the semicircular ring is provided with a plurality of snap-fit ​​blocks at equal intervals, and the drive shaft is provided with a snap-fit ​​groove corresponding to the position of each snap-fit ​​block.

[0012] The beneficial effects of this paper machine slitting device are as follows: by setting up slitting blade discs and adjustment mechanisms, and using the adjustment mechanism with lead screws, the two semi-circular rings can be quickly locked into a complete circular ring after docking, ensuring synchronous circumferential rotation with the drive shaft. This enables rapid installation and replacement of the blade discs, reducing equipment downtime. At the same time, the lead screws can be used to individually control the sliding of the two semi-circular blade discs, allowing operators to make minor adjustments to the blade disc position according to the actual slitting situation, making operation more flexible. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the slitting blade disc of this utility model; Figure 3 This is a schematic diagram showing the state after the lead screw of this utility model locks the two semicircular rings together; Figure 4 This is a schematic diagram of the state before the lead screw of this utility model locks the two semicircular rings together; Figure 5 This is a schematic diagram of the first working state of the semi-circular cutter head of this utility model; Figure 6 This is a schematic diagram of the second working state of the semi-circular cutter head of this utility model; Figure 7 This is a first-view structural diagram of the slitting blade disc component of this utility model after disassembly; Figure 8 This is a second-view structural diagram of the slitting blade disc component after disassembly. Figure 9 This is a partial cross-sectional view of the slitting blade disc of this utility model; Figure 10 This utility model Figure 9 A magnified schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Drive shaft; 101. Snap-fit ​​groove; 2. Driven shaft; 3. Slitting blade disc; 301. Semicircular ring; 3011. First edge; 3012. Second edge; 3013. First protrusion; 3014. First groove; 3015. Second protrusion; 3016. Second groove; 3017. Rotating hole; 3018. Bearing; 3019. Flexible layer; 302. Semicircular blade disc; 3021. Third protrusion; 3022. Third groove; 303. Snap-fit ​​block; 4. Support disc; 5. Adjustment mechanism; 501. Lead screw; 502. Knob. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0018] like Figures 1 to 10As shown, a paper machine slitting device includes a drive shaft 1 and a driven shaft 2. Multiple slitting disc components 3 are fixedly mounted on the outer surface of the drive shaft 1. A support plate 4 is fixedly mounted on the driven shaft 2 at the position corresponding to each slitting disc component 3. Each slitting disc component 3 includes two semi-circular rings 301 and two semi-circular cutter discs 302. The two semi-circular rings 301 combine to form a complete circular ring, and the two semi-circular cutter discs 302 combine to form a complete cutter disc. The two semi-circular rings 301 and the two semi-circular cutter discs 302 are snap-fitted together, while the semi-circular cutter discs 302 are slidably fitted with the semi-circular rings 301. The 01 is provided with an adjustment mechanism 5 for controlling the sliding of the semi-circular ring 301 and causing the two semi-circular rings 301 to lock together. Multiple locking blocks 303 are fixedly provided at equal intervals on the inner wall of the semi-circular ring 301. The drive shaft 1 is provided with a locking groove 101 that matches each locking block 303. By utilizing the cooperation between the locking block 303 and the locking groove 101, the slitting disc 3 can be rotated with the drive shaft 1. Synchronous gears are fixedly provided at the ends of the drive shaft 1 and the driven shaft 2. By utilizing the meshing of the two synchronous gears, the drive shaft 1 and the driven shaft 2 can rotate in opposite directions.

[0019] A first edge 3011 and a second edge 3012 are fixedly provided on the outer surface of the semicircular ring 301. The semicircular cutter disc 302 is slidably disposed between the first edge 3011 and the second edge 3012. A first protrusion 3013 is fixedly provided at one end of the first edge 3011, and a first groove 3014 adapted to the first protrusion 3013 is provided at the other end of the first edge 3011. A second protrusion 3015 is fixedly provided at one end of the second edge 3012 away from the first protrusion 3013, and a second groove 3016 adapted to the second protrusion 3015 is provided at the other end of the second edge 3012. One end of the circular cutter head 302 is fixedly provided with a third protrusion 3021, and the other end of the semi-circular cutter head 302 is provided with a third groove 3022 that matches the third protrusion 3021. When the two semi-circular rings 301 are connected, by controlling the first protrusion 3013 of one semi-circular ring 301 to connect with the first groove 3014 of the other semi-circular ring 301, at this time the second protrusion 3015 of one semi-circular ring 301 will also connect with the second groove 3016 of the other semi-circular ring 301. The two semi-circular cutter heads 302 can be engaged and fitted by using the third protrusion 3021 and the third groove 3022.

[0020] The adjusting mechanism 5 includes a lead screw 501 rotatably disposed inside the first protrusion 3013. A knob 502 is fixedly mounted at one end of the lead screw 501 located outside the first edge 3011. Rotation holes 3017 are provided on both the first protrusion 3013 and the second protrusion 3015. Bearings 3018 are embedded inside each rotation hole 3017. A flexible layer 3019 is fixedly mounted on the inner wall of the inner ring of the bearing 3018. The lead screw 501 is inserted into the flexible layer 3019. A threaded hole corresponding to the position of the lead screw 501 is provided on the third protrusion 3021. When… After the two semicircular rings 301 and the two semicircular cutter discs 302 are connected, the lead screw 501 is struck to make its end pass through the flexible layer 3019 on the second protrusion 3015 and engage, thereby completing the locking of the two semicircular rings 301. After the lead screw 501 is engaged with the flexible layer 3019, the bearing 3018 can be used to keep the lead screw 501 in its assembled position when it is not subjected to external force, preventing it from sliding at will and ensuring the stability of the slitting cutter disc 3 during operation. At the same time, the bearing 3018 can also allow the lead screw 501 to rotate independently.

[0021] The work process is as follows: S1: During installation, by controlling the first protrusion 3013 of one semi-circular ring 301 to align with the first groove 3014 of the other semi-circular ring 301, the second protrusion 3015 of one semi-circular ring 301 will also align with the second groove 3016 of the other semi-circular ring 301. Using the third protrusion 3021 and the third groove 3022, the two semi-circular cutter discs 302 can be engaged and fitted together. S2: After the two semicircular rings 301 and the two semicircular cutter discs 302 are connected, the lead screw 501 is struck to make the end of the lead screw 501 pass through the flexible layer 3019 on the second protrusion 3015 and engage, thereby completing the locking of the two semicircular rings 301. S3: In summary, through the adjustment mechanism 5 with lead screw 501, the two semi-circular rings 301 can be quickly locked into a complete circular ring after docking, ensuring synchronous circumferential rotation with the drive shaft 1. The whole process does not require complex positioning calibration or multiple sets of bolt tightening, realizing the rapid installation and replacement of the cutter head, reducing equipment downtime, and improving the continuous operation capability of the production line. S4: After the cutter head is installed, the two semi-circular cutter heads 302 can be slid independently by the lead screw 501, so that the operator can make minor corrections to the position of the cutter head according to the actual cutting situation (such as slight paper offset or uneven cuts) without having to disassemble and reassemble the entire cutter head, making the operation more flexible. S5: Through precise fine-tuning, the cutting position of each blade can be perfectly matched with the preset size, effectively avoiding problems such as paper cutting crooked and size exceeding the standard caused by blade position deviation, reducing material waste, and improving the dimensional accuracy and cut neatness of the finished product.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A paper machine slitting device, characterized in that: It includes a drive shaft (1) and a driven shaft (2). Multiple slitting discs (3) are fixedly installed on the outer surface of the drive shaft (1). A support disc (4) is fixedly installed on the driven shaft (2) at the position corresponding to each of the slitting discs (3). The slitting disc component (3) includes two semi-circular rings (301) and two semi-circular cutter discs (302). The two semi-circular rings (301) are combined to form a complete circular ring, and the two semi-circular cutter discs (302) are combined to form a complete cutter disc. The two semi-circular rings (301) and the two semi-circular cutter discs (302) are snap-fitted together. The semi-circular cutter discs (302) are slidably fitted with the semi-circular rings (301). The semi-circular rings (301) are provided with an adjustment mechanism (5) for controlling the sliding of the semi-circular rings (301) and for locking the two semi-circular rings (301).

2. The paper machine slitting device according to claim 1, characterized in that: The outer surface of the semicircular ring (301) is fixedly provided with a first edge (3011) and a second edge (3012). The semicircular cutter disc (302) is slidably disposed between the first edge (3011) and the second edge (3012). One end of the first edge (3011) is fixedly provided with a first protrusion (3013), and the other end of the first edge (3011) is provided with a first groove (3014) that matches the first protrusion (3013). The end of the second edge (3012) away from the first protrusion (3013) is fixedly provided with a second protrusion (3015), and the other end of the second edge (3012) is provided with a second groove (3016) that matches the second protrusion (3015).

3. A paper machine slitting device according to claim 2, characterized in that: One end of the semi-circular cutter head (302) is fixedly provided with a third protrusion (3021), and the other end of the semi-circular cutter head (302) is provided with a third groove (3022) that matches the third protrusion (3021).

4. A paper machine slitting device according to claim 3, characterized in that: The adjustment mechanism (5) includes a lead screw (501) rotatably disposed inside the first protrusion (3013), and a knob (502) is fixedly provided at one end of the lead screw (501) located outside the first edge (3011).

5. A paper machine slitting device according to claim 4, characterized in that: Both the first protrusion (3013) and the second protrusion (3015) are provided with rotating holes (3017), and bearings (3018) are embedded inside the rotating holes (3017). A flexible layer (3019) is fixedly provided on the inner wall of the inner ring of the bearing (3018), and the lead screw (501) is inserted into the interior of the flexible layer (3019).

6. A paper machine slitting device according to claim 4, characterized in that: The third protrusion (3021) has a threaded hole that matches the position of the lead screw (501).

7. A paper machine slitting device according to claim 4, characterized in that: The inner wall of the semi-circular ring (301) is provided with a plurality of snap-fit ​​blocks (303) at equal intervals, and the drive shaft (1) is provided with a snap-fit ​​groove (101) corresponding to each snap-fit ​​block (303).

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