Dovetail edge glue spraying mechanism for water needle roll changing

Abstract

The utility model relates to the technical field of glue spraying mechanisms, and discloses a swallow tail edge glue spraying mechanism for water needle roll changing, which comprises a bottom plate I. A square groove is formed in the left end of the rear side of the top of the bottom plate I. The inner wall of the square groove is slidably connected with a long block. A heater is fixedly connected to the top of the long block, a heating pipe is slidably connected to the front side of the heater, a first round box is fixedly connected to the outer wall of the heating pipe, a second round box is fixedly connected to the bottom of the inner wall of the first round box, a water suction pump is slidably connected to the bottom of the inner wall of the second round box, and a long pipe is slidably connected to the other end of the water suction pump. And the other end of the long pipe is slidably connected with a hose. During use, the heater is firstly pushed to the right side, so that the front end of the heater is in sliding connection with the rear end of the heating pipe, and the round box II is used for containing glue, so that the temperature of the glue is reduced after the round box II is heated.

Description

TECHNICAL FIELD

[0001] The utility model relates to glue mechanism technology field especially relates to a swallow -tail edge glue mechanism for water needle roll change. BACKGROUND

[0002] At present, in the paper processing industry, especially in the water needle roll change process, in order to ensure the continuity and stability of paper, usually need to carry out glue spraying treatment on the edge of paper, the commonly used glue spraying technology includes swallow -tail edge glue spraying, hot pressing glue, wherein the swallow -tail edge glue mechanism for water needle roll change is coated with glue on the swallow -tail edge of paper by accurate glue spraying, ensures that the edge is firmly bonded when roll change, the mechanism improves the roll change efficiency, reduces glue waste, optimizes the production process and guarantees the paper processing quality.

[0003] Through the retrieval, china patent publication number: CN216917948U, the utility model belongs to paper production technical field, and specifically relates to a water needle roll change pair swallow -tail glue spraying device and prevent paper tail swing system, pair swallow -tail glue spraying device includes mounting bracket, telescopic cylinder, the telescopic end of telescopic cylinder is connected parallelogram mechanism, the extension rod assembly of connecting in the output end of parallelogram mechanism and the glue nozzle assembly of installing in the end of extension rod assembly, glue nozzle assembly is aimed at the edge of swallow -tail on the parent roll and sprays glue.Paper tail swing prevention system of water needle roll change, including parent roll, roll paper cylinder, new roll paper roller and pair swallow -tail glue spraying device, pair swallow -tail glue spraying device is installed on the left and right sides of roll paper cylinder frame, is used to spray glue on the outer edge of swallow -tail paper.The utility model is aimed at the cut swallow -tail paper of roll paper cylinder through the pair swallow -tail glue spraying device on the both sides of roll paper cylinder and sprays glue, so that the swallow -tail is adhered to the parent roll when continuing to rotate with the parent roll, on the one hand, the swallow -tail will not be everywhere and break, on the other hand, after the swallow -tail is pasted on the parent roll, the parent roll can be kept from loosening, but the above-mentioned does not consider that the viscosity of glue is higher at low temperature, which will lead to the uniformity of glue spraying reduces. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a swallow -tail edge glue mechanism for water needle roll change, aims at improving the problem that the viscosity of glue is higher at low temperature in the prior art, which will lead to the uniformity of glue spraying reduces.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a water needle changes roll with dovetail edge part glue spraying mechanism, including bottom plate one, the top rear side left end of bottom plate one is provided with square groove, the inner wall sliding connection of square groove has long piece, the top fixed connection of long piece has heater, the front side sliding connection of heater has heating pipe, the outer wall fixed connection of heating pipe has round box no.

[0006] Through the above technical scheme: a dovetail edge part glue spraying mechanism for water needle roll change, the mechanism design is ingenious, and the function is complete, can effectively complete the glue spraying task, it mainly includes a bottom plate one, the top rear side left end of this bottom plate one is specially provided with a square groove, so as to be slidably connected with a long piece, the top of the long piece is fixedly connected with a heater, the heater can provide the necessary heat to ensure the temperature control in the glue spraying process, the front side sliding connection of the heater has a heating pipe, and the heating pipe can transmit the heat generated by the heater to the part needing heating in the glue spraying process.

[0007] As a further description of the above technical scheme:

[0008] The height adjusting mechanism includes a bottom plate two, the right side of the bottom plate two is fixedly connected with the outer wall of the middle upper part of the fixed plate, the top of the bottom plate two is fixedly connected with a fixed box, the inner wall of the fixed box is fixedly connected with a motor, the output end of the motor is fixedly connected with a cylinder one, the outer wall of the cylinder one is fixedly connected with a rotating plate, and the top of the rotating plate is fixedly connected with a cylinder two.

[0009] Through the above technical scheme: the height adjusting mechanism mainly includes a bottom plate two, the right side of the bottom plate two is fixedly connected with the outer wall of the middle upper part of the fixed plate, the top of the bottom plate two is fixedly connected with a fixed box, the inner wall of the fixed box is fixedly connected with a motor, the output end of the motor is fixedly connected with a cylinder one, the outer wall of the cylinder one is fixedly connected with a rotating plate, and the top of the rotating plate is fixedly connected with a cylinder two.

[0010] As a further description of the above technical scheme:

[0011] The left and right sides of the cylinder one are fixedly connected with limit blocks, and the outer wall of the cylinder one is rotatably connected with the inward side of the fixed plate.

[0012] Through the technical scheme, the left and right sides of the first cylinder are fixedly connected with the limiting blocks, so that the first cylinder is limited.

[0013] As a further description of the above technical scheme:

[0014] The right side of the second cylinder is slidably connected with a hose, and the top of the first cylinder is slidably connected with a lid.

[0015] Through the technical scheme, the hose is slidably connected with the second cylinder, so that the hose can slide, and the lid is slidably connected with the top of the first cylinder, so that the lid can prevent sundries from entering the first cylinder.

[0016] As a further description of the above technical scheme:

[0017] The bottom of the first bottom plate is fixedly connected with a second long plate, and the front side of the second long plate is fixedly connected with a first long plate.

[0018] Through the technical scheme, the bottom of the first bottom plate is fixedly connected with the second long plate, and the front side of the second long plate is fixedly connected with the first long plate.

[0019] As a further description of the above technical scheme:

[0020] The bottom of the first cylinder is fixedly connected with a second fixing block, and the top of the second cylinder is slidably connected with a second lid.

[0021] Through the technical scheme, the bottom of the first cylinder is fixedly connected with the second fixing block, and the top of the second cylinder is slidably connected with the second lid, so as to keep the cleanliness of the second cylinder.

[0022] As a further description of the above technical scheme:

[0023] The outer wall of the second fixing block is slidably connected with a connecting block, and the bottom of the connecting block is slidably connected with a round rod.

[0024] Through the technical scheme, the outer wall of the second fixing block is slidably connected with the connecting block, and the bottom of the connecting block is slidably connected with the round rod, so as to move in a small range.

[0025] As a further description of the above technical scheme:

[0026] The outer wall of the round rod is slidably connected with a first fixing block, and the bottom of the first fixing block is fixedly connected with the right side of the top of the first bottom plate.

[0027] Through the technical scheme, the outer wall of the round rod is slidably connected with the first fixing block, and the bottom of the first fixing block is fixedly connected with the right side of the top of the first bottom plate.

[0028] The utility model has the following beneficial effects:

[0029] 1、the utility model discloses, when temperature is lower, the viscosity of glue will increase, in use, first push the heater to right side, with the rear end of heating tube of heater's front end sliding connection, the heating of the inner wall of round box no. 1 will make the inner wall of round box no. 2 heat, because the round box no. 2 is used to pack glue, so after the heating of round box no. 2, the temperature of glue will be raised, thereby reducing the viscosity of glue, and the heater is closed, so the operation can raise temperature, and the temperature of glue is reduced.

[0030] 2、the utility model discloses, in use, first start the motor in fixed box, and the motor starts after driving cylinder no. 1 rotation, and cylinder no. 1 rotation will drive the rotation of rotation plate, and the rotation of rotation plate will drive the rotation of cylinder no. 2, and cylinder no. 2 rotation will drive the movement of hose, and the movement of hose will drive the movement of connecting pipe, and the movement of connecting pipe will drive the movement of spray head, to improve the accuracy when spray head sprays glue, reduce the waste of glue, reduce cost, avoid excessive and deficient gumming. DRAWINGS

[0031] Figure 1 It is the bottom plate one front side perspective drawing of the dovetail edge part glue spraying mechanism for water needle roll change that the utility model proposes;

[0032] Figure 2 It is the fixed plate left side perspective drawing of the dovetail edge part glue spraying mechanism for water needle roll change that the utility model proposes;

[0033] Figure 3 It is the fixed plate right side perspective drawing of the dovetail edge part glue spraying mechanism for water needle roll change that the utility model proposes

[0034] Figure 4 It is the fixed plate partial structure drawing of the dovetail edge part glue spraying mechanism for water needle roll change that the utility model proposes;

[0035] Figure 5 It is Figure 4 the enlarged view of A of;

[0036] Figure 6 It is the fixed box partial structure split drawing of the dovetail edge part glue spraying mechanism for water needle roll change that the utility model proposes.

[0037] Figure 7 It is the round box no. 1 partial structure split drawing of the dovetail edge part glue spraying mechanism for water needle roll change that the utility model proposes

[0038] LEGEND:

[0039] 1, bottom plate one; 2, height adjusting mechanism; 201, bottom plate two; 202, fixed box; 203, cylinder one; 204, rotating plate; 205, cylinder two; 206, limiting block; 207, motor; 3, long plate one; 4, fixed plate; 5, thermometer; 6, round rod; 7, square groove; 8, long block; 9, heater; 10, fixed block one; 11, fixed block two; 12, connecting block; 13, heating pipe; 14, round box one; 15, round box two; 16, long pipe; 17, water pump; 18, cover one; 19, cover two; 20, hose; 21, connecting pipe; 22, spray head; 23, long plate two. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Please refer to the drawings Figure 1 , the drawings Figure 5 and the drawings Figure 7The utility model provides a kind of dovetail edge part glue spraying mechanism for water needle roll change, including bottom plate one 1, the top rear side left end of bottom plate one 1 is equipped with square groove 7, the inner wall sliding connection of square groove 7 has long block 8, the top fixed connection of long block 8 has heater 9, the front side sliding connection of heater 9 has heating pipe 13, the outer wall fixed connection of heating pipe 13 has round box one 14, the device is mainly composed of bottom plate one 1, especially open a square groove 7 in the top rear side left end position of bottom plate one 1, this square groove 7 is slidingly connected with a long block 8 on the inner wall, the top of long block 8 is fixedly connected with a heater 9, the front side portion of heater 9 is slidingly connected with a heating pipe 13, the outer wall of heating pipe 13 is fixedly connected with a round box one 14, the inner wall bottom of round box one 14 is fixedly connected with round box two 15, the inner wall bottom of round box two 15 is slidingly connected with water pump 17, the other end of water pump 17 is slidingly connected with long pipe 16, the other end of long pipe 16 is slidingly connected with hose 20, the front side of hose 20 is slidingly connected with connecting pipe 21, the inner wall bottom of round box one 14 is fixedly connected with a round box two 15, the inner wall bottom of round box two 15 is slidingly connected with a water pump 17, the other end of water pump 17 is slidingly connected with a long pipe 16, the other end of long pipe 16 is slidingly connected with a hose 20, the front side of hose 20 is slidingly connected with a connecting pipe 21, the outer wall bottom of connecting pipe 21 is fixedly connected with spray head 22, the rear portion of the outer wall of round box one 14 is fixedly connected with thermometer 5, the top left and right sides of the bottom plate one 1 are fixedly connected with fixed plate 4, the outer wall of fixed plate 4 is provided with height adjustment mechanism 2, the outer wall bottom of connecting pipe 21 is fixedly connected with a spray head 22, for spraying glue, the rear portion of the outer wall of round box one 14 is fixedly connected with a thermometer 5, for real-time monitoring temperature, the top left and right sides of bottom plate one 1 are fixedly connected with two fixed plates 4, and one height adjustment mechanism 2 is arranged on the outer wall of fixed plate 4, and the height adjustment mechanism 2 is used to adjust height, and the height adjustment mechanism 2 is used to adjust the height of glue spraying device;

[0042] Specifically, the mechanism is mainly composed of a bottom plate 1, a square groove 7 is specially arranged at the top rear left end position of the bottom plate 1, a long block 8 is slidably connected to the inner wall of the square groove 7, a heater 9 is fixedly connected to the top of the long block 8, a heating pipe 13 is slidably connected to the front side of the heater 9, a circular box 1 4 is fixedly connected to the outer wall of the heating pipe 13, a circular box 2 15 is fixedly connected to the inner wall bottom of the circular box 1 4, a water pump 17 is slidably connected to the inner wall bottom of the circular box 2 15, a long pipe 16 is slidably connected to the other end of the water pump 17, a hose 20 is slidably connected to the other end of the long pipe 16, a connecting pipe 21 is slidably connected to the front side of the hose 20, a spray head 22 is fixedly connected to the outer wall bottom of the connecting pipe 21 for spraying glue, a thermometer 5 is fixedly connected to the rear of the outer wall of the circular box 1 4 for real-time temperature monitoring, and two fixed plates 4 are fixedly connected to the top left and right sides of the bottom plate 1. The outer wall of the fixed plate 4 is provided with a height adjustment mechanism 2.

[0043] Please refer to the accompanying Figure 2 , the accompanying Figure 4 and the accompanying Figure 6 , the height adjustment mechanism 2 includes a bottom plate 2 01, the right side of the bottom plate 2 01 is fixedly connected to the outer wall of the fixed plate 4, the top of the bottom plate 2 01 is fixedly connected with a fixed box 202, the inner wall of the fixed box 202 is fixedly connected with a motor 207, the height adjustment mechanism 2 is composed of the bottom plate 2 01, the right side of the bottom plate 2 01 is fixedly connected to the outer wall of the fixed plate 4, the top of the bottom plate 2 01 is fixedly connected with a fixed box 202, the inner wall of the fixed box 202 is fixedly connected with a motor 207, the output end of the motor 207 is fixedly connected with a cylinder 1 203, the outer wall of the cylinder 1 203 is fixedly connected with a rotating plate 204, the top of the rotating plate 204 is fixedly connected with a cylinder 2 205, the output end of the motor 207 is connected with a cylinder 1 203, the outer wall of the cylinder 1 203 is fixedly connected with a rotating plate 204, and the top of the rotating plate 204 is fixedly connected with a cylinder 2 205.

[0044] Specifically, the height adjustment mechanism 2 comprises a bottom plate 2 01, the right side of the bottom plate 2 01 is fixedly connected to the outer wall of the fixed plate 4, the top of the bottom plate 2 01 is fixedly connected with a fixed box 202, the inner wall of the fixed box 202 is fixedly connected with a motor 207, the output end of the motor 207 is fixedly connected with a cylinder 1 203, the outer wall of the cylinder 1 203 is fixedly connected with a rotating plate 204, the top of the rotating plate 204 is fixedly connected with a cylinder 2 205, the output end of the motor 207 is connected with a cylinder 1 203, the outer wall of the cylinder 1 203 is fixedly connected with a rotating plate 204, and the top of the rotating plate 204 is fixedly connected with a cylinder 2 205.

[0045] Please refer to the accompanyingFigure 1 , attached Figure 2 and attached Figure 3 The left and right sides of the cylinder 203 are fixedly connected with the limiting blocks 206, the outer wall of the cylinder 203 is rotatably connected with the inward side of the fixed plate 4, the bottom of the bottom plate 1 is fixedly connected with the long plate 2 23, the front side of the long plate 2 23 is fixedly connected with the long plate 1 3, the left and right sides of the cylinder 203 are fixedly connected with the limiting blocks 206, to ensure the stability in the movement process. The outer wall of the cylinder 203 and the inward side of the fixed plate 4 are connected together in a rotatable manner, so that the cylinder 203 can rotate freely within a certain range, the bottom of the bottom plate 1 is fixedly connected with the long plate 2 23, the front side of the long plate 2 23 is fixedly connected with the long plate 1 3, the outer wall of the fixed block 2 11 is slidably connected with the connecting block 12, the bottom of the connecting block 12 is slidably connected with the round rod 6, the outer wall of the fixed block 2 11 is slidably connected with the connecting block 12, and the bottom of the connecting block 12 is slidably connected with the round rod 6. This sliding connection allows the connecting block 12 and the round rod 6 to move freely within a certain range;

[0046] Specifically, the left and right sides of the cylinder 203 are fixedly connected with the limiting blocks 206, to ensure the stability in the movement process, the outer wall of the cylinder 203 and the inward side of the fixed plate 4 are connected together in a rotatable manner, so that the cylinder 203 can rotate freely within a certain range, the bottom of the bottom plate 1 is fixedly connected with the long plate 2 23, the front side of the long plate 2 23 is fixedly connected with the long plate 1 3, the outer wall of the fixed block 2 11 is slidably connected with the connecting block 12, and the bottom of the connecting block 12 is slidably connected with the round rod 6. This sliding connection allows the connecting block 12 and the round rod 6 to move freely within a certain range, thereby improving the flexibility and applicability of the device.

[0047] Please refer to attached Figure 2 , attached Figure 3 and attached Figure 5The right side of the cylindrical column two 205 is slidably connected with a soft tube 20, the top of the cylindrical box one 14 is slidably connected with a cover one 18, the outer wall of the cylindrical rod 6 is slidably connected with a fixed block one 10, the right side of the cylindrical column two 205 is slidably connected with a soft tube 20, the top of the cylindrical box one 14 is slidably connected with a cover one 18, the outer wall of the cylindrical rod 6 is slidably connected with a fixed block one 10, the bottom of the fixed block one 10 is fixedly connected with the top right side of the bottom plate one 1, the bottom of the cylindrical box one 14 is fixedly connected with a fixed block two 11, the bottom of the fixed block one 10 is fixedly connected with the top right side of the bottom plate one 1, the bottom of the cylindrical box one 14 is fixedly connected with a fixed block two 11, the top of the cylindrical box two 15 is slidably connected with a cover two 19, the bottom of the fixed block one 10 is fixedly connected with the top right side of the bottom plate one 1, and the connection mode makes the whole structure more stable and not easy to displace. Meanwhile, the bottom of the cylindrical box one 14 is fixedly connected with a fixed block two 11;

[0048] Specifically, the right side of the cylindrical column two 205 is slidably connected with a soft tube 20, the top of the cylindrical box one 14 is slidably connected with a cover one 18, the outer wall of the cylindrical rod 6 is slidably connected with a fixed block one 10, the bottom of the fixed block one 10 is fixedly connected with the top right side of the bottom plate one 1, the bottom of the cylindrical box one 14 is fixedly connected with a fixed block two 11, the top of the cylindrical box two 15 is slidably connected with a cover two 19, and the cover two 19 can be conveniently opened and closed to facilitate the operation of the inside of the cylindrical box two.

[0049] Working principle: when the temperature is low, the viscosity of the glue will increase, which will affect the uniformity of the glue spraying, so the temperature needs to be raised to reduce the viscosity of the glue. In use, first push the heater 9 to the right side, so that the front end of the heater 9 is slidably connected with the rear end of the heating pipe 13. At this time, turn on the heater 9 to start heating. After the heater 9 is heated, it will drive the heating pipe 13 to heat. The heating of the heating pipe 13 will heat the inner wall of the cylindrical box one 14. The heating of the inner wall of the cylindrical box one 14 will heat the inner wall of the cylindrical box two 15. Since the cylindrical box two 15 is used to store glue, after the cylindrical box two 15 is heated, the temperature of the glue will be raised, thereby reducing the viscosity of the glue. When the thermometer on the outer wall of the cylindrical box one 14 shows the appropriate temperature, turn off the heater 9. In this way, the quality of the glue will not be affected by the excessively high temperature. This operation can first raise the temperature, reduce the temperature of the glue, and thus reduce the viscosity of the glue, so that the glue can be sprayed more uniformly, ensuring that the glue is evenly coated, avoiding local excess and deficiency, and improving the bonding strength and product appearance.

[0050] Because the height of the spray head is high during use, the work efficiency is higher, but the precision of the glue spraying is reduced, so the height of the spray head can be reduced to increase the precision, during use, first, the motor 207 in the fixed box 202 is started, the motor 207 is started to drive the cylinder one 203 to rotate, the cylinder one 203 rotates to drive the rotating plate 204 to rotate, the rotating plate 204 rotates to drive the cylinder two 205 to rotate, the cylinder two 205 rotates to drive the hose 20 to move, the hose 20 moves to drive the connecting pipe 21 to move, the connecting pipe 21 moves to drive the spray head 22 to move, when the motor 207 rotates clockwise, the rotating plate 204 rotates forward to drive the spray head 22 to move downward, in this way, the height of the spray head 22 is reduced, so that the precision of the glue spraying of the spray head 22 is improved, the glue waste is reduced, the cost is reduced, the excessive and insufficient glue coating is avoided, the production efficiency and the reliability of the product are improved.

[0051] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A dovetail edge glue spraying mechanism for water needle roll changing, comprising a bottom plate one (1), characterized in that: The top rear side left end of the bottom plate one (1) is provided with a square groove (7), the inner wall of the square groove (7) is slidably connected with a long block (8), the top of the long block (8) is fixedly connected with a heater (9), the front side of the heater (9) is slidably connected with a heating pipe (13), the outer wall of the heating pipe (13) is fixedly connected with a round box one (14), the inner wall bottom of the round box one (14) is fixedly connected with a round box two (15), the inner wall bottom of the round box two (15) is slidably connected with a water pump (17), the other end of the water pump (17) is slidably connected with a long pipe (16), the other end of the long pipe (16) is slidably connected with a hose (20), the front side of the hose (20) is slidably connected with a connecting pipe (21), the outer wall bottom of the connecting pipe (21) is fixedly connected with a spray head (22), the rear part of the outer wall of the round box one (14) is fixedly connected with a thermometer (5), the top of the bottom plate one (1) is fixedly connected with a fixed plate (4), the outer wall of the fixed plate (4) is provided with a height adjusting mechanism (2), and the height adjusting mechanism (2) is used for height adjustment.

2. The dovetail edge glue spraying mechanism for water needle roll changing according to claim 1, characterized in that: The height adjusting mechanism (2) comprises a bottom plate two (201), the right side of the bottom plate two (201) is fixedly connected with the outer wall middle part of the fixed plate (4), the top of the bottom plate two (201) is fixedly connected with a fixed box (202), the inner wall of the fixed box (202) is fixedly connected with a motor (207), the output end of the motor (207) is fixedly connected with a cylinder one (203), the outer wall of the cylinder one (203) is fixedly connected with a rotating plate (204), and the top of the rotating plate (204) is fixedly connected with a cylinder two (205).

3. The dovetail edge glue spraying mechanism for water needle roll changing according to claim 2, characterized in that: The left and right sides of the cylinder one (203) are fixedly connected with limit blocks (206), and the outer wall of the cylinder one (203) is rotatably connected with the inward side of the fixed plate (4).

4. The dovetail edge glue spraying mechanism for water needle roll changing according to claim 2, characterized in that: The right side of the cylinder two (205) is slidably connected with a hose (20), and the top of the round box one (14) is slidably connected with a cover one (18).

5. The dovetail edge glue spraying mechanism for water needle roll changing according to claim 1, characterized in that: The bottom of the bottom plate one (1) is fixedly connected with a long plate two (23), and the front side of the long plate two (23) is fixedly connected with a long plate one (3).

6. The dovetail edge glue spraying mechanism for water needle roll changing according to claim 1, characterized in that: The bottom of the round box one (14) is fixedly connected with a fixed block two (11), and the top of the round box two (15) is slidably connected with a cover two (19).

7. The dovetail edge glue spraying mechanism for water needle roll changing according to claim 6, characterized in that: The outer wall middle part of the fixed block two (11) is slidably connected with a connecting block (12), and the bottom of the connecting block (12) is slidably connected with a round rod (6).

8. The dovetail edge glue spraying mechanism for water needle roll changing according to claim 7, characterized in that: The outer wall of the round rod (6) is slidably connected with a fixed block one (10), and the bottom of the fixed block one (10) is fixedly connected with the top right side of the bottom plate one (1).

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