Positioning and cutting device for paper production

Abstract

The utility model discloses a positioning cutting device for paper production, which comprises a gas insulation cover used for being mounted on a water needle and a negative pressure box used for being mounted at the bottom of a forming net of a paper machine, the gas insulation cover is provided with a gas inlet hole, the negative pressure box is provided with an exhaust hole, and the top wall of the negative pressure box is provided with an airflow channel at the position corresponding to the water needle. The air isolation cover is installed on the water needle, the negative pressure box is installed at the bottom of the forming net of the paper machine, when the water needle conducts positioning cutting, the negative pressure box provides negative pressure, air enters from the air inlet of the air isolation cover, passes through the forming net and then enters the airflow channel, splashing paper pulp is pressed on paper through the air entering the air isolation cover, and therefore the paper pulp is prevented from splashing. And when the air passes through the cutting gap on the paper, the paper pulp on the cutting gap can be sucked out downwards.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper machine technical field especially relates to a paper production positioning cutting device. BACKGROUND

[0002] When papermaking is carried out through a paper machine, the paper on the forming wire of the paper machine needs to be positioned, cut and trimmed, so a paper production positioning cutting device needs to be used. Our company cuts the paper on the forming wire through a water needle 1, which is installed on the equipment skeleton through a support 30. When cutting, the following problems exist: firstly, after cutting through the water needle, splashed paper pulp exists at the cutting gap, which is inconvenient for the later separation of the paper; secondly, the paper pulp on the forming wire can splash and easily adhere to the water needle and the support 30. When the paper pulp on the water needle and the support 30 accumulates to a certain degree, the paper pulp on the water needle and the support 30 will fall off, affecting production. In view of the above problems, our company's technical personnel have proposed a paper production positioning cutting device.

[0003] In the prior art, Chinese patent document CN211057508U, published (announced) on July 21, 2020, discloses a paper machine wire part for preventing paper pulp from splashing, which comprises a rack, a cutting device installed on the rack, a cleaning device, a paper web and a wire part arranged below the cutting device; the cutting device comprises two supports, water needle nozzles installed on the supports, two water pipes and a first water storage tank, one end of the water pipe is connected with the first water storage tank, and the other end is connected with the support; the wire part is installed at the bottom of the paper web, the cleaning device comprises a gas blowing device and a gas suction device, the gas suction device is installed on the rack and arranged above the cutting device, the gas blowing device is installed below the wire part and faces the gas suction device; the two supports are installed on the rack and arranged on both sides of the gas suction device, and the water needle nozzles are installed on the supports and evenly distributed at the bottom of the supports. It solves the problem that the paper machine wire part is prone to form splashing, thereby causing paper breakage; and the splashed paper pulp will adhere to the inside of the first box body, and as the paper pulp accumulates, more paper pulp adhering objects will fall on the paper. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a paper production positioning cutting device, which installs an air isolation cover on the water needle, installs a negative pressure box at the bottom of the forming wire of the paper machine, provides negative pressure through the negative pressure box when the water needle is positioned and cut, air enters from the air inlet hole of the air isolation cover, enters the air flow channel after passing through the forming wire, and the splashed paper pulp is pressed on the paper through the air in the air isolation cover, thereby preventing the paper pulp from splashing. When the air passes through the cutting gap on the paper, the paper pulp on the cutting gap can also be sucked out downward.

[0005] In order to achieve the above object, the utility model provides a paper production positioning cutting device, including the air -tight cover for installing to the water needle, and the negative pressure box for installing to the bottom of paper machine forming net, be provided with the air inlet on the air -tight cover, be provided with the exhaust hole on the negative pressure box, the top wall of negative pressure box is provided with airflow channel in the position of corresponding water needle.

[0006] The central axis of the air inlet is perpendicular to the top wall of the negative pressure box.

[0007] The air -tight cover includes a tapered portion and an extension cylinder portion, the tapered portion is installed on the water needle, the extension cylinder portion is fixedly connected to the lower end of the tapered portion, and the air inlet is arranged on the tapered portion.

[0008] The upper end of the air -tight cover is fixedly connected with a sliding sleeve, the sliding sleeve is sleeved on the water needle, and a limiting screw is rotatably connected to the sliding sleeve.

[0009] The top wall of the negative pressure box is provided with a gas collecting device, and the gas collecting device comprises a gas collecting cylinder.

[0010] The top of the gas collecting cylinder is fixedly connected with a sliding plate, the airflow channel penetrates through the sliding plate, the top wall of the negative pressure box is provided with a sliding groove, a placing hole is arranged in the middle of the sliding groove, the sliding plate is directionally placed in the sliding groove, and the gas collecting cylinder penetrates through the placing hole.

[0011] The outer wall of the gas collecting cylinder is fixedly connected with a clamping seat, a clamping groove with an open lower end is arranged in the clamping seat, a notch is arranged on the side away from the gas collecting cylinder of the clamping seat, the notch is communicated with the clamping groove, an adjusting rod is screw-connected and arranged on the side wall of the negative pressure box, one end of the adjusting rod in the negative pressure box is provided with a limiting disc, the diameter of the limiting disc is greater than the diameter of the adjusting rod, the limiting disc is clamped in the clamping groove, the adjusting rod penetrates out of the notch, and the other end of the adjusting rod outside the negative pressure box is provided with a handle.

[0012] The limiting nut is rotatably connected to the adjusting rod.

[0013] The gas collecting cylinder comprises a cone body with a large upper part and a small lower part, and a splash-proof cylinder fixedly connected to the lower end of the cone body.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] 1. The utility model discloses a water needle is provided with the air -tight cover, and the negative pressure box is installed at the bottom of the forming wire of paper machine, when the water needle is positioned and cut, the negative pressure box provides the negative pressure, and the air enters from the air inlet hole of the air -tight cover, and then enters the airflow channel after passing the forming wire. The air in the air -tight cover presses the splashed paper pulp on the paper, thereby preventing the paper pulp from splashing. When the air passes through the cutting gap on the paper, the paper pulp on the cutting gap can be sucked out downward.

[0016] 2. The utility model discloses a gas collecting device, which comprises a gas collecting cylinder, the gas collecting cylinder is located in the negative pressure box, the upper end of the gas collecting cylinder is connected with the negative pressure box, and the lower end of the gas collecting cylinder is suspended, a central hole of the gas collecting cylinder forms an airflow channel, and the paper pulp entering the inside of the negative pressure box is prevented from splashing to the bottom of the forming wire of paper machine.

[0017] 3. The utility model discloses a gas collecting device, which comprises a gas collecting cylinder, the gas collecting cylinder is located in the negative pressure box, the upper end of the gas collecting cylinder is connected with the negative pressure box, and the lower end of the gas collecting cylinder is suspended, a central hole of the gas collecting cylinder forms an airflow channel, and the paper pulp entering the inside of the negative pressure box is prevented from splashing to the bottom of the forming wire of paper machine. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings required to be used in the embodiments or the prior art description will be briefly introduced below.

[0019] Figure 1 It is a front view structural schematic diagram of the utility model.

[0020] Figure 2 It is a right view structural schematic diagram of the utility model.

[0021] Figure 3 It is a top view structural schematic diagram of the utility model.

[0022] Figure 4 It is Figure 2 It is a sectional view structural schematic diagram of A-A.

[0023] Figure 5 It is Figure 4 It is an enlarged structural schematic diagram of J.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the gas collecting device of the utility model.

[0025] Mark:

[0026] Water needle 1;

[0027] Air -tight cover 10, air inlet hole 11, conical part 12, extension cylinder part 13, sliding sleeve 14, limiting screw 141,

[0028] Negative pressure box 20, exhaust hole 21, sliding groove 22, placing hole 23;

[0029] Support 30;

[0030] Gas collecting device 40, gas collecting cylinder 41, air flow passage 411, cone 412, splash-proof cylinder 413, sliding plate 42, clamping seat 43, clamping groove 431, notch 432, adjusting rod 44, limiting disc 441, handle 442, limiting nut 443. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0032] Embodiment 1

[0033] Please see Figures 1-5 A paper production positioning cutting device, comprising an air-tight cover 10 for mounting on a water needle 1, and a negative pressure box 20 for mounting on the bottom of a forming wire of a paper machine, the air-tight cover 10 is provided with an air inlet hole 11, the negative pressure box 20 is provided with an air exhaust hole 21, and the top wall of the negative pressure box 20 is provided with an air flow passage 411 corresponding to the position of the water needle 1.

[0034] By mounting the air-tight cover 10 on the water needle 1 and the negative pressure box 20 on the bottom of the forming wire of the paper machine, when the water needle 1 is positioned and cut, the negative pressure box 20 provides negative pressure, air enters the air-tight cover 10 through the air inlet hole 11, and then enters the air flow passage 411 after passing through the forming wire. The air entering the air-tight cover 10 presses the splashed paper pulp on the paper, thereby preventing the paper pulp from splashing. When the air passes through the cutting gap on the paper, it can also suck the paper pulp in the cutting gap downward.

[0035] In this embodiment, the air flow passage 411 can be a hole provided on the negative pressure box 20. When installed, the negative pressure box 20 is attached to the bottom of the forming wire of the paper machine.

[0036] In use, the air exhaust hole 21 on the negative pressure box 20 is in communication with the existing air exhaust equipment for providing negative pressure to the negative pressure box 20. For example, an adsorption type solid-liquid separation equipment is used.

[0037] Further, the central axis of the air inlet hole 11 is perpendicular to the top wall of the negative pressure box 20, which facilitates the downward movement of the air flow, thereby having better anti-splashing effect.

[0038] In this embodiment, the air-tight cover 10 comprises a conical portion 12 and an extension cylinder portion 13, the conical portion 12 is mounted on the water needle 1 at the upper end, the extension cylinder portion 13 is fixedly connected to the lower end of the conical portion 12, and the air inlet hole 11 is arranged on the conical portion 12.

[0039] In order to facilitate installation and adjust the position of the gas cover 10, the upper end of the gas cover 10 is fixedly connected with a sliding sleeve 14, the sliding sleeve 14 is sleeved on the water needle 1, and a limiting screw 141 is rotationally connected on the sliding sleeve 14. When the limiting screw 141 abuts against the water needle 1, the gas cover 10 is limitedly fixed with the water needle 1.

[0040] Embodiment 2:

[0041] On the basis of Embodiment 1, the top wall of the negative pressure box 20 is provided with a gas collecting device 40.

[0042] Specifically, referring to Figure 4 , 5 , the gas collecting device 40 comprises a gas collecting cylinder 41, the gas collecting cylinder 41 is located in the negative pressure box 20, the upper end of the gas collecting cylinder 41 is connected with the negative pressure box 20, and the lower end is suspended, and the central hole of the gas collecting cylinder 41 forms an airflow passage 411. Through the above structure, the paper pulp entering the inside of the negative pressure box 20 is prevented from splashing to the bottom of the forming wire of the paper machine.

[0043] In use, the airflow moves downward into the negative pressure box 20 through the airflow passage 411 in the center of the gas collecting cylinder.

[0044] Further, the top of the gas collecting cylinder 41 is fixedly connected with a sliding plate 42, the airflow passage 411 penetrates through the sliding plate 42, the top wall of the negative pressure box 20 is provided with a sliding groove 22, the middle part of the sliding groove 22 is provided with a placing hole 23, the sliding plate 42 is directionally placed in the sliding groove 22, and the gas collecting cylinder 41 penetrates through the placing hole 23; the length of the sliding groove 22 is greater than the length of the sliding plate 42, and the placing hole 23 is a long hole. Through the above structure, the position of the gas collecting device 40 can be adjusted according to the cutting needs.

[0045] In use, the gas collecting device 40 can be moved by pushing the sliding plate 42.

[0046] Further, in order to facilitate the movement adjustment and limiting of the gas collecting device 40, referring to Figure 5 , the outer wall of the gas collecting cylinder 41 is fixedly connected with a clamping seat 43, the clamping seat 43 is provided with a clamping groove 431 with an open lower end, the clamping seat 43 is provided with a notch 432 on the side away from the gas collecting cylinder 41, the notch 432 is through with the clamping groove 431, and the side wall of the negative pressure box 20 is rotationally connected with an adjusting rod 44 in a threaded manner, one end of the adjusting rod 44 located in the negative pressure box 20 is provided with a limiting disc 441, the diameter of the limiting disc 441 is greater than the diameter of the adjusting rod 44, the limiting disc 441 is clamped in the clamping groove 431, the adjusting rod 44 penetrates out of the notch 432, and the other end of the adjusting rod 44 located outside the negative pressure box 20 is provided with a handle 442. An external thread is arranged on the adjusting rod 44, and the gas collecting device 40 can be pushed and pulled to adjust by screwing the handle 442.

[0047] A limiting nut 443 is screwed and mounted on the adjusting rod 44 at the side outside the negative pressure box 20. After the limiting nut 443 is screwed, the limiting nut 443 abuts against the outer wall of the negative pressure box 20, preventing the adjusting rod 44 from rotating.

[0048] In the embodiment, the gas collecting cylinder 41 comprises a cone 412 with a large upper part and a small lower part, and a splash-proof cylinder 413 fixed at the lower end of the cone 412. The cone 412 has a larger adsorption surface, and the splash-proof cylinder 413 has a smaller diameter, preventing the pulp from splashing to the bottom of the forming wire of the paper machine.

[0049] Of course, in order to facilitate the complete cleaning of the pulp in the negative pressure box 20, one of the side plates of the negative pressure box 20 is detachably mounted by bolts. When cleaning, the side plate is disassembled.

[0050] The working principle or action process of the utility model is as follows:

[0051] In use, referring to Figure 4 , the air-tight cover 10 is mounted on the water needle 1, and the negative pressure box 20 is mounted at the bottom of the forming wire of the paper machine. The exhaust hole 21 on the negative pressure box 20 is communicated with the existing exhaust equipment, so as to provide negative pressure for the negative pressure box 20.

[0052] When the water needle 1 is positioned and cut, referring to Figure 5 , the negative pressure box 20 provides negative pressure, air enters from the air inlet hole 11 of the air-tight cover 10, and the air flow moves downward. The air entering the air-tight cover 10 presses the splashed pulp on the paper, thereby preventing the pulp from splashing.

[0053] Then the air flow passes through the cutting gap on the forming wire of the paper machine, sucks the pulp on the cutting gap downward, cleans the cutting gap, and facilitates the subsequent separation of the paper.

[0054] When the cutting position needs to be adjusted, before production, the position of the water needle 1 is adjusted through the support 30, and then the handle 442 is twisted to align the air flow channel 411 on the gas collecting device 40 with the water needle 1.

Claims

1. A paper production positioning cutting device, characterized by: The application relates to a gas isolation cover (10) for being mounted on a water needle (1) and a negative pressure box (20) for being mounted on the bottom of a forming wire of a papermaking machine, the gas isolation cover (10) is provided with a plurality of air inlet holes (11), the negative pressure box (20) is provided with air exhaust holes (21), and the top wall of the negative pressure box (20) is provided with an air flow channel (411) at the position corresponding to the water needle (1).

2. The paper production positioning cutting device according to claim 1, characterized in that: The central axis of the air inlet hole (11) is perpendicular to the top wall of the negative pressure box (20).

3. The paper production positioning cutting device according to claim 2, characterized in that: The gas isolation cover (10) comprises a tapered portion (12) and an extension cylinder portion (13), the upper end of the tapered portion (12) is mounted on the water needle (1), the extension cylinder portion (13) is fixedly connected to the lower end of the tapered portion (12), and the air inlet hole (11) is arranged on the tapered portion (12).

4. A paper production positioning cutting device according to any one of claims 1 to 3, characterized in that: The upper end of the gas isolation cover (10) is fixedly connected with a sliding sleeve (14), the sliding sleeve (14) is sleeved on the water needle (1), and a limiting screw (141) is screwed on the sliding sleeve (14).

5. The paper production positioning cutting device according to claim 1, characterized in that: The top wall of the negative pressure box (20) is provided with a gas collecting device (40), the gas collecting device (40) comprises a gas collecting cylinder (41), the gas collecting cylinder (41) is located in the negative pressure box (20), the upper end of the gas collecting cylinder (41) is connected with the negative pressure box (20), the lower end of the gas collecting cylinder (41) is suspended, and the central hole of the gas collecting cylinder (41) forms the air flow channel (411).

6. The paper production positioning cutting device according to claim 5, characterized in that: The top of the gas collecting cylinder (41) is fixedly connected with a sliding plate (42), the air flow channel (411) penetrates through the sliding plate (42), the top wall of the negative pressure box (20) is provided with a sliding groove (22), the middle part of the sliding groove (22) is provided with a placing hole (23), the sliding plate (42) is directionally placed in the sliding groove (22), and the gas collecting cylinder (41) penetrates through the placing hole (23); the length of the sliding groove (22) is greater than that of the sliding plate (42), and the placing hole (23) is a long hole.

7. The paper production positioning cutting device according to claim 6, characterized in that: The outer wall of the gas collecting cylinder (41) is fixedly connected with a clamping seat (43), the clamping seat (43) is provided with a clamping groove (431) with an open lower end, the clamping seat (43) is provided with a notch (432) away from the gas collecting cylinder (41), the notch (432) is through the clamping groove (431), the side wall of the negative pressure box (20) is screw-connected with an adjusting rod (44), one end of the adjusting rod (44) located in the negative pressure box (20) is provided with a limiting disc (441), the diameter of the limiting disc (441) is greater than that of the adjusting rod (44), the limiting disc (441) is clamped in the clamping groove (431), the adjusting rod (44) penetrates out of the notch (432), and the other end of the adjusting rod (44) located outside the negative pressure box (20) is provided with a handle (442).

8. The paper production positioning cutting device according to claim 7, characterized in that: The limiting nut (443) is screw-connected on the adjusting rod (44) on the side located outside the negative pressure box (20).

9. A paper production positioning cutting device according to any one of claims 5 to 8, characterized in that: The gas collecting cylinder (41) comprises a tapered body (412) with a large upper part and a small lower part and a splash-proof cylinder (413) fixedly connected to the lower end of the tapered body (412).

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