Double-blade type large-roller paperboard splitting machine

Abstract

The utility model relates to a double-cutter type large-roller paperboard splitting machine which is more reasonable in structure and more convenient to adjust cutters. The double-cutter type large-roller paperboard splitting machine comprises a rack, a large roller, a first splitting cutter and a plurality of guide rollers are installed on the rack, a paper pressing belt is wound around the guide rollers and acts on the large roller, the large roller is in transmission connection with a splitting power source driving the large roller to rotate, and the second splitting cutter is in transmission connection with the splitting power source driving the large roller to rotate. A paper pressing belt is arranged in front of the large roller, a feeding port and a discharging port are formed between the paper pressing belt and the large roller, the feeding port is located above the discharging port, and the first slitting knife is located on the side, attached to the paper pressing belt, of the large roller. A second cutter bar is installed on the second cutter bar base, and the lower end of the second cutter bar obliquely extends downwards to the position above the guide roller at the discharging port. According to the double-cutter type large-roller paperboard splitting machine, the two splitting cutters are matched to cut off a paperboard, and the cutters are more convenient to install and adjust.

Description

Technical Field

[0001] The utility model relates to a paperboard processing machine, in particular to a large roller paperboard slitting machine. Background Art

[0002] A cardboard slitting machine is a device for slitting cardboard. As the core mechanism of the cardboard slitting machine, the structure of the cardboard slitting machine determines the quality of the cardboard slitting. At present, the general cardboard slitting machine uses two slitting knives to slitting in an extrusion manner. However, this extrusion slitting method will cause burrs on the cut surface of the cardboard. In order to solve this problem, the applicant previously applied for a utility model patent named cardboard slitting machine (Announcement No. CN212312098U). When the cardboard slitting mechanism disclosed in the patent is working, the cardboard enters from the feed port between the paper pressing belt and the large roller. As the large roller rotates, the cardboard is clamped between the paper pressing belt and the large roller and moves along the arc surface of the large roller. Since a soft contact layer is attached to the roller surface of the large roller (the cardboard is located above the soft contact layer), the soft contact layer contacts the slitting knife installed on the rear side of the large roller, so that the tip of the slitting knife cuts the cardboard. However, this method requires a soft contact layer to be attached. After long-term use, the soft contact layer will be cut with knife marks and needs to be replaced, which is very inconvenient. To this end, the applicant has developed a slitting machine that slits cardboard by means of two knives working together up and down, wherein the first knife is located on the side where the large roller and the paper pressing belt are in contact, and the cardboard rotates with the large roller, and the first knife cuts a mark on the upper surface of the cardboard (half the depth of the cardboard), and the second knife is installed at the discharge port between the paper pressing belt and the large roller. However, since the space at the discharge port is relatively small, if the ordinary installation method is adopted, the installation and adjustment of the second knife will be very difficult. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model innovatively provides a double-knife large roller paperboard slitting machine with a more reasonable structure and more convenient knife adjustment.

[0004] The double-knife large roller cardboard slitting machine comprises a frame, wherein a large roller, a first slitting knife and a plurality of guide rollers are installed on the frame, and a paper pressing belt is wound around the plurality of guide rollers, and the paper pressing belt acts on the large roller, and the large roller is transmission-connected to a slitting power source driving the large roller to rotate, and a feed port and a discharge port are provided between the paper pressing belt and the large roller, and the feed port is located above the discharge port, and the first slitting knife is located on a side where the large roller and the paper pressing belt are in contact with each other, characterized in that a discharge roller group is provided in front of the discharge port between the paper pressing belt and the large roller, a second knife bar seat is provided above the discharge roller group, a second knife bar is installed on the second knife bar seat, the lower end of the second knife bar extends obliquely downward to above the guide roller at the discharge port, and a second slitting knife is installed at the lower end of the second knife bar, and the second slitting knife and the first slitting knife are staggered up and down relative to the cardboard, and the second slitting knife and the first slitting knife can cooperate to cut the cardboard.

[0005] A second knife beam is installed on the frame, a second horizontal guide rail is installed on the second knife beam, a second slide seat is slidably provided on the second horizontal guide rail, the second knife rod seat is installed on the second slide seat, a second positioning power source is installed on the second slide seat, and the output end of the second positioning power source can act on the second knife beam.

[0006] The second tool bar seat can be slidably arranged on the second slide seat, and a rotatable up and down adjusting screw is installed on the second slide seat. The up and down adjusting screw is threadedly connected to the second tool bar seat, and the rotation of the up and down adjusting screw can drive the second tool bar seat to move up and down.

[0007] The second cutter bar can be slidably arranged on the second cutter bar seat, and a rotatable front and rear adjustment screw is installed on the second cutter bar seat. The front and rear adjustment screw is threadedly connected to the second cutter bar, and the rotation of the front and rear adjustment screw can drive the second cutter bar to move forward and backward.

[0008] The second cutter bar is provided with a long hole, and the second cutter bar is connected to the second cutter bar seat through a fixing bolt, and the fixing bolt passes through the long hole of the second cutter bar.

[0009] A rotatable pressing wheel is installed at the lower end of the second knife rod, and the pressing wheel can cooperate with the guide roller at the discharge port to press the paper.

[0010] There are two pressing wheels, and the second slitting knife is located between the left and right pressing wheels.

[0011] A first knife beam is installed on the frame, a first horizontal guide rail is installed on the first knife beam, a first slide seat is slidably provided on the first horizontal guide rail, the first slitting knife is installed on the first knife bar, the first knife bar is installed on the first knife bar seat, the first knife bar seat is installed on the first slide seat, a first positioning power source is installed on the first slide seat, and the output end of the first positioning power source can act on the first knife beam directly or through a transmission member.

[0012] According to the double-knife type large roller paperboard slitting machine provided by the utility model, paperboard is cut by the cooperation of two slitting knives, and the installation and adjustment of the knives are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 The cross-sectional view along the AA direction;

[0015] Figure 3 for Figure 2 A partial enlarged view of point B in the middle;

[0016] Figure 4 This is a schematic diagram of the installation of the second slitting knife;

[0017] Figure 5 This is a schematic diagram of the installation of the first slitting knife;

[0018] Figure 6 It is a schematic diagram of two cutting knives cooperating in cutting. DETAILED DESCRIPTION

[0019] like Figure 1 and Figure 2 As shown, this double-blade large roller paperboard slitting machine includes a frame 1, on which a large roller 12, a first slitting knife 11 and a plurality of guide rollers 13 are installed, and a paper pressing belt 14 is wound around the plurality of guide rollers 13. The paper pressing belt 14 acts on the large roller 12, and the large roller 12 is connected to a slitting power source for driving the large roller 12 to rotate. There is a feed port 121 and a discharge port 122 between the paper pressing belt 14 and the large roller 12, and the feed port 121 is located above the discharge port 122. When working, the paperboard C enters from the feed port 121 between the paper pressing belt 14 and the large roller 12, as shown in FIG. Figure 6 As shown, the paper pressing belt 14 presses the cardboard C against the large roller 12, and the large roller 12 rotates through the driving of the slitting power source, thereby driving the cardboard to rotate.

[0020] like Figure 2 and Figure 6 As shown, the first slitting knife 11 is located on the side where the large roller 12 and the paper pressing belt 14 are in contact ( Figure 6 The left side direction in the figure, in which the cardboard C is tightly attached to the large roller 12), as the cardboard C moves, the first slitting knife 11 can make the first cut on the outer side of the cardboard. At this time, only a part of the outer side of the cardboard is cut in, and the cardboard is not completely cut. Figure 3 and Figure 6 As shown, the second slitting knife 16 is located at the discharge port 111 between the paper pressing belt 14 and the large roller 12. Of course, the second slitting knife 16 and the first slitting knife 11 are staggered up and down relative to the cardboard (when slitting the cardboard, the first slitting knife 11 is located on one side of the cardboard, and the second slitting knife 16 is located on the other side of the cardboard). When the cardboard C comes out from the discharge port 122 between the paper pressing belt 14 and the large roller 12, the cardboard C is not attached to the large roller 12 at this time, but is separated from the large roller 12, so that the second slitting knife 16 can be located above the inner side of the cardboard and perform a second cut on the inner side of the cardboard C. At this time, a part of the inner side of the cardboard C is cut in. Since the second slitting knife 16 and the first slitting knife 11 are on a cutting line, that is, the cutting line left by the first slitting knife 11 on the cardboard and the cutting line left by the second slitting knife 16 on the cardboard overlap up and down, the second slitting knife 16 and the first slitting knife 11 can cooperate to cut the cardboard C.

[0021] Figure 3 As shown, a discharge roller group 15 is provided in front of the discharge port 122 between the paper pressing belt 14 and the large roller 12, and the cardboard C is discharged forward through the discharge roller group 15, and there is space for installing the second slitting knife 16 above the discharge roller group 15, so a second knife bar seat 161 is provided above the discharge roller group 15, and a second knife bar 160 is installed on the second knife bar seat 161. The lower end of the second knife bar 160 extends obliquely downward to above the guide roller 13 at the discharge port, and the second slitting knife 16 is installed on the lower end of the second knife bar 160. The second slitting knife 16 needs to be installed on the second knife bar 160, and the second knife bar 160 needs to be installed on the second knife bar seat 161. The second knife bar 160 with an obliquely downward extending structure can not only allow the second knife bar seat 161 to have a larger space for easy installation (such as Figure 3 As described above, there is a large space on the right side above the discharge roller group 15, and the second slitting knife 16 can be placed as close to the inner side of the discharge port 122 as possible, so that the second slitting knife 16 is placed above the guide roller 13 at the discharge port, because the closer to the inner side of the discharge port 122, the smaller the offset of the cardboard C, and the more accurate the cutting, while the closer to the outer side of the discharge port 122, due to the lack of pressure from the paper pressing belt 14 and the large roller 12, the cardboard C is easily slightly offset by the reaction force of the cutter, affecting the accuracy. In addition, the second slitting knife 16 also needs to adjust its position, and the second knife bar seat 161 needs to be moved during adjustment. Since the space where the second knife bar seat 161 is located is larger, it is more conducive to workers' operation and adjustment.

[0022] In order to adjust the left and right positions of the second slitting knife 16, Figure 4 As shown, a second knife beam 18 is installed on the frame 1, a second horizontal guide rail 19 is installed on the second knife beam 18, a second slide 162 is slidably provided on the second horizontal guide rail 19, a second knife bar seat 161 is installed on the second slide 162, a second positioning power source 163 is installed on the second slide 162, and the output end of the second positioning power source 163 can act on the second knife beam 18. When the left and right positions of the second slitting knife 16 need to be adjusted, the position of the second slide 162 on the second horizontal guide rail 19 is moved, so that the second knife bar seat 161 and the second slitting knife 16 move together with the second slide 162. When the positions are determined, the output end of the second positioning power source 163 acts on the second knife beam 18, so that the second slide 162 is fixed, thereby realizing the adjustment of the left and right positions of the second slitting knife 16 to meet the requirements of different cutting line positions required for cardboard.

[0023] In order to adjust the upper and lower positions of the second slitting knife 16, Figure 4 As shown, the second cutter bar seat 161 can be slidably arranged on the second slide seat 162, and a rotatable up-and-down adjustment screw 165 is installed on the second slide seat 162, and the up-and-down adjustment screw 165 is threadedly connected with the second cutter bar seat 161. When it is necessary to adjust the up-and-down position of the second slitting knife 16, it is only necessary to rotate the up-and-down adjustment screw 165, and the up-and-down adjustment screw 165 can drive the second cutter bar seat 161 to move up and down, and the second cutter bar seat 161 drives the second cutter 16 to move up and down, thereby realizing the adjustment of the up-and-down position of the second cutter 16 to meet the cutting requirements of different thickness cardboards. Of course, it can also be used to adjust the depth of cardboard cutting.

[0024] In order to adjust the front and rear positions of the second slitting knife 16, Figure 4 As shown, the second cutter bar 160 can be slidably arranged on the second cutter bar seat 161, and a rotatable front-back adjustment screw 164 is installed on the second cutter bar seat 161, and the front-back adjustment screw 164 is threadedly connected with the second cutter bar 160. When the front-back position of the second slitting knife 16 needs to be adjusted, it is only necessary to rotate the front-back adjustment screw 164, and the front-back adjustment screw 164 can drive the second cutter bar 160 to move forward and backward, so that the front-back position of the second slitting knife 16 can be adjusted, so that the tip of the second slitting knife 16 is directly above the guide roller 13.

[0025] Since the cardboard will exert a force in the front-to-back direction on the second slitting knife 16, in order to fix the second slitting knife 16 and prevent the second slitting knife 16 from slightly moving forward and backward, such as Figure 4As shown, a long hole is provided on the second cutter bar 160, and the second cutter bar 160 is connected to the second cutter bar seat 161 by a fixing bolt, and the fixing bolt passes through the long hole of the second cutter bar 160. The second cutter bar 160 can be fixed to the column by the fixing bolt, and because the second cutter bar 160 has a long hole, it does not affect the forward and backward movement adjustment of the second cutter bar 160.

[0026] In order to prevent the paperboard C from tilting upward after coming out of the discharge port 122 between the paper pressing belt 14 and the large roller 12, thereby affecting the cutting accuracy of the second slitting knife 16, as shown in FIG. Figure 3 and Figure 4 As shown, two rotatable pressing wheels 17 are installed at the lower end of the second blade rod 160, and the pressing wheels 17 can cooperate with the guide roller 13 at the discharge port to press the paper, and the second slitting knife 16 is located between the two pressing wheels 17. The two pressing wheels 17 press the paperboard on the guide roller 13, so that the paperboard C can be smoothly transported forward, thereby ensuring the cutting accuracy of the second slitting knife 16 on the paperboard.

[0027] As mentioned above, due to different requirements, the slitting position of the cardboard needs to be adjusted. The second slitting knife 16 can be adjusted to the left and right positions, and the first slitting knife 16 also needs to be able to adjust the left and right positions. Figure 5 As shown, a first knife beam 25 is installed on the frame 1, a first horizontal guide rail 24 is installed on the first knife beam 25, a first slide 22 is slidably provided on the first horizontal guide rail 24, the first slitting knife 11 is installed on the first knife bar 20, the first knife bar 20 is installed on the first knife bar seat 26, the first knife bar seat 26 is installed on the first slide 22, a first positioning power source 21 is installed on the first slide 22, and the output end of the first positioning power source 21 can act on the first knife beam 25 directly or through the transmission member 23. When the position of the first slitting knife 16 needs to be adjusted, the position of the first slide 22 on the first horizontal guide rail 24 is moved, and when the position is determined, the output end of the first positioning power source 21 acts on the first knife beam 25 directly or through the transmission member 23, so that the position of the first slitting knife 16 is fixed.

Claims

1. A double-blade large roller paperboard slitting machine, comprising a frame (1), on which a large roller (12), a first slitting knife (11) and a plurality of guide rollers (13) are mounted, a paper pressing belt (14) is wound around the plurality of guide rollers (13), the paper pressing belt (14) acts on the large roller (12), the large roller (12) is connected to a slitting power source for driving the large roller (12) to rotate, a feed port and a discharge port are provided between the paper pressing belt (14) and the large roller (12), the feed port is located above the discharge port, the first slitting knife (11) is located on the side where the large roller (12) and the paper pressing belt (14) are in contact, and the characteristics are: A discharge roller group (15) is provided in front of the discharge port between the paper pressing belt (14) and the large roller (12); a second knife bar seat (161) is provided above the discharge roller group (15); a second knife bar (160) is mounted on the second knife bar seat (161); the lower end of the second knife bar (160) extends obliquely downward to above the guide roller (13) at the discharge port; a second slitting knife (16) is mounted at the lower end of the second knife bar (160); the second slitting knife (16) and the first slitting knife (11) are staggered up and down relative to the paperboard; the second slitting knife (16) and the first slitting knife (11) can cooperate to slit the paperboard.

2. The double-blade large roller paperboard slitting machine according to claim 1, characterized in that: A second knife beam (18) is mounted on the frame (1), a second horizontal guide rail (19) is mounted on the second knife beam (18), a second slide seat (162) is slidably mounted on the second horizontal guide rail (19), the second knife bar seat (161) is mounted on the second slide seat (162), a second positioning power source (163) is mounted on the second slide seat (162), and an output end of the second positioning power source (163) can act on the second knife beam (18).

3. The double-blade large roller paperboard slitting machine according to claim 1, characterized in that: The second tool bar seat (161) is slidably arranged on the second slide seat (162) up and down, and a rotatable up and down adjustment screw (165) is installed on the second slide seat (162). The up and down adjustment screw (165) is threadedly connected to the second tool bar seat (161), and the rotation of the up and down adjustment screw (165) can drive the second tool bar seat (161) to move up and down.

4. The double-blade large roller paperboard slitting machine according to claim 3, characterized in that: The second knife bar (160) is slidably arranged on the second knife bar seat (161) forward and backward, and a rotatable forward and backward adjusting screw (164) is installed on the second knife bar seat (161). The forward and backward adjusting screw (164) is threadedly connected to the second knife bar (160), and the rotation of the forward and backward adjusting screw (164) can drive the second knife bar (160) to move forward and backward.

5. The double-blade large roller paperboard slitting machine according to claim 4, characterized in that: The second knife rod (160) is provided with a long hole, and the second knife rod (160) is connected to the second knife rod seat (161) via a fixing bolt, and the fixing bolt passes through the long hole of the second knife rod (160).

6. The double-blade large roller paperboard slitting machine according to claim 1, characterized in that: A rotatable pressing wheel (17) is mounted at the lower end of the second knife rod (160), and the pressing wheel (17) can cooperate with the guide roller (13) at the discharge port to press paper.

7. The double-blade large roller paperboard slitting machine according to claim 6, characterized in that: Two pressing wheels (17) are provided, and the second slitting knife (16) is located between the left and right pressing wheels (17).

8. The double-blade large roller paperboard slitting machine according to claim 1, characterized in that: A first knife beam (25) is mounted on the frame (1), a first horizontal guide rail (24) is mounted on the first knife beam (25), a first slide seat (22) is slidably mounted on the first horizontal guide rail (24), the first slitting knife (11) is mounted on a first knife bar (20), the first knife bar (20) is mounted on a first knife bar seat (26), the first knife bar seat (26) is mounted on a first slide seat (22), a first positioning power source (21) is mounted on the first slide seat (22), and an output end of the first positioning power source (21) can act on the first knife beam (25) directly or through a transmission member (23).

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