CN216804407U - Water bath stretcher for stretching net - Google Patents

Abstract

The application relates to the field that the application relates to plastics net material processing equipment especially relates to a water bath stretcher for stretching net. Including the water bath and preheat the pond, guide roller set, tension mechanism includes that two are the tensile cymbals of symmetry setting along vertical, be used for driving about tensile cymbals along its central line pivoted first drive assembly, tensile cymbals is towards the guide surface of another tensile cymbals one side for the slope setting, it preheats the pond to form the less one end in clearance to be close to the water bath between two guide surface peripheries, tensile cymbals outer wall is equipped with the felting needle along the guide surface periphery, the felting needle is used for making tensile net fixed and make tensile net along with the rotation forward motion of tensile cymbals to the guide surface periphery. Because the periphery of the stretching cymbal is circular, the stretching net can be transversely stretched to the required width after passing through a longer path, and the stretching net is not easy to break in the stretching process. Meanwhile, the plastic stretching net occupies small space in the length direction, so that the plastic stretching net is more suitable for plastic stretching nets with large requirements on transverse stretching amount.

Description

Water bath stretcher for stretching net

Technical Field

The application relates to the field of plastic net material processing equipment, in particular to a water bath stretcher for stretching nets.

Background

The prior plastic stretching net processing technology is as follows: the plastic raw material is heated and melted in an extruder and is extruded by a screw into a special rotary machine head with inner and outer die orifices provided with a plurality of small holes. The molten plastic flows through the die orifices to form two strands of molten material. The two strands of material wires are intermittently converged at one point by the rotation of the machine head to form a network, and then the network is cooled and shaped into a net after being transversely stretched.

The transverse stretching process is generally achieved by a stretcher. For example, patent publication No. CN202225436U, which discloses an adjustable transverse stretching device for plastic web material, a hot oven is arranged on the frame, a rear guide roller and a pulling-out roller are arranged at the rear part of the frame, a front guide roller is arranged at the front part of the frame, a front cross beam is transversely fixed at the front part of a frame, a left trolley and a right trolley are supported on two side edges of the rear part of the frame in a floating mode, the left trolley and the right trolley support a rear cross beam, the front parts of a right expanding bracket and the left expanding bracket are supported on the front cross beam, the rear parts of the right expanding bracket and the left expanding bracket are supported on the rear cross beam, the front part distance between the right expanding bracket and the left expanding bracket, which are adjustable relative to the left and right positions of the front cross beam and the rear cross beam, is smaller than the rear part distance, chain wheels are arranged at the front end and the rear end of the right expanding bracket and the front end and the rear end of the left expanding bracket, a chain is hung between the front chain wheels and the rear chain wheels, a needle-shaped screw is fixed on a chain link of the chain, and one end chain wheel on the right expanding bracket and the left expanding bracket is connected with a driving motor.

When the device works, firstly, a plastic original net is guided into the back of the device from the front, then the net material is guided into a hot oven from the back of the machine to be preheated, the preheated original net is guided into the front end of the device to be discharged, then the preheated original net is sent to needle screws on a transverse width expanding mechanism through a front end inlet device, the needle screws are inserted into meshes of the net material by utilizing the porous characteristic of the net material, and the net material is tightly pressed by a grooved wheel to prevent the net material from falling off. The inlet width and the outlet width can be adjusted by adjusting the distance between the front end and the rear end of the right expanding bracket and the front end and the rear end of the left expanding bracket, the original net is transversely stretched and oriented on a transverse expanding mechanism, and the stretched net material is sent out by a pulling roller.

It can be known from the working process that if the distance that the stretching net needs to be stretched transversely is large, the distance difference between the front end and the rear end of the right spreading bracket and the front end and the rear end of the left spreading bracket needs to be adjusted to be large. At this time, if the distance between the front cross beam and the rear cross beam is not large, the plastic stretching net needs to be greatly deformed in a short time, and is easy to break. If the distance between front beam and the rear beam, that whole stretching device just needs very long, and area is great, hardly puts in the factory building.

In view of the above-mentioned related art, the utility model has considered that the following drawbacks exist: it is not suitable for plastic stretch webs requiring a large amount of stretch in the cross direction.

SUMMERY OF THE UTILITY MODEL

In order to be able to better stretch the plastic stretch web over a larger width,

the application provides a water bath stretcher for stretching net adopts following technical scheme:

the utility model provides a water bath stretcher for tensile net, includes that frame, water bath preheat pond, guide roller set, tension mechanism, the water bath is preheated the pond and is used for heating tensile net, guide roller set is used for leading tensile net and preheats pond and tension mechanism through the water bath in proper order, tension mechanism includes that two are personally submitted the tensile cymbal that the symmetry set up along vertical, is used for driving about tensile cymbal along its central line pivoted first drive assembly, tensile cymbal is towards the guide surface that another tensile cymbal one side set up for the slope, two it is close to water bath to preheat the pond to form the less one end in clearance between the guide surface periphery, tensile cymbal outer wall is equipped with the felting needle along the guide surface periphery, the felting needle is used for making the relative guide surface periphery of tensile net fixed and make tensile net along with the rotation forward motion of tensile cymbal.

Through adopting above-mentioned technical scheme, preheat the pond through the water bath and heat tensile net earlier, then through guide roller group with tensile net guide to tensile cymbal department, make tensile cymbal and tensile net both sides fixed through the felting needle, and make tensile net stretched along with the rotation of tensile cymbal. Because the periphery of the stretching cymbal is circular, the stretching net can be transversely stretched to the required width after passing through a longer path, and the stretching net is not easy to break in the stretching process. Meanwhile, the plastic stretching net occupies a small space in the length direction, and is easy to arrange in a factory, so that the plastic stretching net is more suitable for plastic stretching nets with large requirements on transverse stretching amount. And the brittleness of the stretched net heated by water bath is less than that of the hot-dried stretched net, so that the stretched net can be more stable and is not easy to break in the stretching process.

Optionally, the first driving assembly includes two driving motors, one driving motor corresponds to one cymbal, the driving motor is mounted on the base through the connecting seat, the body of the driving motor is mounted on the connecting seat, and the output shaft of the driving motor is coaxially connected to its corresponding cymbal.

Through adopting above-mentioned technical scheme, two tensile cymbals outside install driving motor speed reduction drive respectively, and two driving motor are synchronous through the electric linkage between. The whole structure is simple, excessive transmission structures are not needed, and the structure is simple and convenient. Meanwhile, the driving motor is directly maintained during maintenance and repair, other excessive operations are not needed, and the maintenance is convenient.

Optionally, the guide surface is arranged along a vertical direction, and the guide surface is arranged in an inclined manner with the feeding direction of the stretching net.

Through adopting above-mentioned technical scheme for still be installed on the horizontal plane when driving motor installs, need not have the ascending slope of vertical direction, make driving motor can be more stable convenient install in the connecting seat.

Optionally, the guide roller set includes two spacing rollers, one of them spacing roller is located the discharge end that the pond was preheated in the water bath, another the feeding end that spacing roller is located tensile cymbal, be equipped with two spacing wheels on the spacing roller, a spacing wheel corresponds a tensile cymbal, the clearance is the same with the minimum size of locating in clearance between two tensile cymbal between the spacing wheel, two be equipped with the gag lever post between the spacing roller, gag lever post fixed mounting is in spacing roller, the gag lever post is equipped with two and corresponds two spacing wheels respectively, the gag lever post is located spacing wheel and deviates from another gag lever post one side.

By adopting the technical scheme, the stretching net is guided by the limiting wheels, so that when the stretching net moves to the stretching cymbal, the puncture needles on the stretching cymbal can be better inserted into the stretching net, and the stretching net is combined with the tension cable cymbal. Meanwhile, the limiting rod can play a certain limiting role, so that the stretching net stably moves forwards along the designed feeding direction.

Optionally, the water bath stretcher further comprises a water bath heat preservation pool, and the lower half part of the stretching cymbal is immersed in the water bath heat preservation pool.

By adopting the technical scheme, the stretching net is still at a temperature and humidity suitable for stretching in the stretching process, so that the stretching net is better stretched. And makes the stretched web less likely to retract.

Optionally, a heat insulation foam layer floats on the water bath heat insulation pool, the connecting seat is located above the heat insulation foam layer, and the driving motor is located above the connecting seat.

Through adopting above-mentioned technical scheme, thermal-insulated foam layer can play certain thermal-insulated heat preservation effect for the heat in the water bath heat preservation pond is difficult for outwards giving off by extravagant, make full use of energy. Meanwhile, when in maintenance, a maintainer does not need to enter a water bath heat preservation pool, and can directly maintain the driving motor from the outside, so that the maintenance efficiency is improved by more than 3 times, and the maintenance is simple, convenient and safe.

Optionally, the cymbal stretcher is provided with a second driving assembly for driving the cymbal stretcher to rotate relative to the base, and the driving motor is movably connected to the connecting seat driving motor and moves relative to the base along with the cymbal stretcher; when the cymbal is rotated, the difference between the minimum distance and the maximum distance between the two cymbals is changed.

By adopting the technical scheme, the width of the feeding end and the width of the discharging end of the stretching mechanism can be adjusted as required, so that the stretcher is suitable for more working conditions.

Optionally, the limiting wheels are axially slidably connected to the limiting roller, each cymbal for stretching corresponds to a second driving assembly, the second driving assembly includes a screw rod screwed to the base and a push block rotatably connected to one end of the screw rod, the push block is located on the side of the limiting wheel away from another limiting wheel, one end of the push block is rotatably connected to a connecting block, an annular groove is formed in the outer wall of the cymbal for stretching, the connecting block is slidably connected to the annular groove, and the connecting block and the annular groove are axially fixed; when the push block moves relative to the base, the tension cymbal rotates relative to the push block around the rotation point of the push block and the connecting block.

By adopting the technical scheme, the position of the push block relative to the base can be adjusted by the harness cord, so that the cymbal can be pushed to rotate relative to the base, and the difference between the minimum distance and the maximum distance between the two cymbals can be adjusted. Meanwhile, the limiting wheels can be driven to follow up, so that the distance between the two limiting wheels is equal to or slightly larger than the minimum distance sum between the two stretching cymbals as far as possible, and the stretching net can be better connected with the needles on the stretching cymbals.

Optionally, a guide groove is formed in the connecting seat, the guide groove is connected with a guide block in a sliding and sliding mode, and the driving motor is fixedly installed on the guide block.

Through adopting above-mentioned technical scheme, through the guiding force between guide way and the guide block for driving motor can more stable relative connecting seat motion at tensile cymbal rotation in-process, thereby makes tensile cymbal can more stable relative seat rotate.

Optionally, two stretching cymbals form a stretching cymbals group, a plurality of stretching cymbals are arranged at intervals along the feeding direction of the stretching net, and the guide roller group is used for guiding the stretching net to sequentially pass through the water bath preheating pool and all stretching cymbals group.

By adopting the technical scheme, the number of the tension cymbals required to be used can be selected according to the actual working condition. If the width of the stretching net to be stretched in the lateral direction is large, a plurality of stretching cymbal groups may be selected, and if the width of the stretching net to be stretched in the lateral direction is small, a single stretching cymbal group may be selected. So that the device is better suitable for various working conditions.

In summary, the present application includes at least one of the following beneficial technical effects:

the plastic stretching net can be better stretched in a larger width;

the maintenance is convenient, the maintenance efficiency is high, and the cost is low;

the method is suitable for different use conditions.

Drawings

FIG. 1 is a schematic structural view of example 1.

FIG. 2 is a sectional view of example 1.

Fig. 3 is a sectional view of the stretching mechanism in embodiment 1.

Fig. 4 is a schematic structural view of the stretching mechanism in embodiment 1.

FIG. 5 is a sectional view in the horizontal direction of embodiment 2.

Fig. 6 is a vertical sectional view of embodiment 2.

FIG. 7 is a sectional view in the horizontal direction of embodiment 3.

FIG. 8 is a vertical sectional view of embodiment 3.

Description of reference numerals: 1. an unwinding mechanism; 2. a winding mechanism; 3. a machine base; 4. a water bath preheating pool; 5. a water bath heat preservation pool; 6. a stretching mechanism; 7. a guide roller; 8. a limiting roller; 9. stretching a cymbal; 10. a first drive assembly; 11. a guide surface; 12. a connecting seat; 13. a drive motor; 14. a needle; 15. connecting columns; 16. a thermally insulating foam layer; 17. a limiting wheel; 18. a limiting rod; 19. a tension cymbal set; 20. a second drive assembly; 21. a screw rod; 22. a push block; 23. a servo motor; 24. connecting blocks; 25. a ring groove; 26. a guide block; 27. a guide groove; 28. and a driving roller.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Example 1:

the embodiment of the application discloses a water bath stretcher for stretching a net. Referring to fig. 1 and 2, the stretching line includes an unwinding mechanism 1, a water bath stretcher, and a winding mechanism 2. The water bath stretcher comprises a machine base 3, a water bath preheating pool 4, a guide roller set, a water bath heat preservation pool 5 and a stretching mechanism 6. Wherein the unwinding mechanism 1, the water bath preheating tank 4, the water bath heat preservation tank 5 and the winding mechanism 2 are arranged in sequence. The stretching mechanism 6 is arranged on the machine base 3, and the stretching mechanism 6 is positioned in the water bath heat preservation pool 5. The guide roller group is used for guiding the stretching net to sequentially pass through the water bath preheating tank 4 and the stretching mechanism 6. The water bath preheating tank 4 and the water bath heat preservation tank 5 are filled with hot water.

When the device works, the unwinding mechanism 1 unwinds the stretching net, then the stretching net enters the water bath preheating tank 4 to be heated, then the stretching net is stretched by the stretching mechanism 6, and after stretching is finished, the stretching net is rolled by the rolling mechanism 2 or directly jumps over the rolling mechanism 2 to enter other subsequent treatment processes. During the stretching process, the stretching net is immersed in the water bath heat preservation pool 5, so that the stretching net can be better and more stably stretched.

Referring to fig. 2, in particular, the guide roller set includes a plurality of guide rollers 7 and two limiting rollers 8. The guide rollers 7 are distributed at the feed end of the water bath preheating tank 4, in the water bath preheating tank 4 and at the discharge end of the water bath preheating tank 4. Therefore, the stretching net released by the unwinding mechanism 1 can move to the stretching mechanism 6 smoothly. And two limiting rollers 8, wherein one limiting roller 8 is positioned at the discharge end of the water bath preheating tank 4 and above the guide roller 7. Another stop roller 8 is located at the feed end of a tension cymbal 9.

Referring to fig. 3 and 4, the frame 3 is door frame shaped and is sleeved outside the water bath heat preservation tank 5. The tension mechanism 6 includes two tension cymbals 9 and a first drive assembly 10. The two tension cymbals 9 are symmetrically arranged along the vertical plane. The side of the tension cymbal 9 facing the other tension cymbal 9 is a guide surface 11 arranged obliquely, the guide surface 11 is arranged along the vertical direction, and the guide surface 11 is arranged obliquely to the feeding direction of the tension net. The lower half part of the stretching cymbal 9 is immersed in the water bath heat preservation pool 5. The end with the smallest gap formed between the peripheries of the two guide surfaces 11 is close to the water bath preheating tank 4, and the end with the largest gap formed between the peripheries of the two guide surfaces 11 is deviated from the water bath preheating tank 4. The outer wall of the cymbal 9 is provided with needles 14 at equal intervals along the circumference of the guide surface 11. The needles 14 serve to fix the tension net relative to the periphery of the guide surface 11 and to move the tension net forward with the rotation of the tension cymbal 9.

Referring to fig. 3 and 4, the first driving assembly 10 includes two driving motors 13 and two connection sockets 12. One driving motor 13 corresponds to one tension cymbal 9, the body of the driving motor 13 is mounted above the connecting base 12, and the output shaft of the driving motor 13 is coaxially connected to its corresponding tension cymbal 9. The connecting base 12 is fixedly installed below the base 3 through a connecting column 15 arranged in a vertical direction. Referring to fig. 2, in order to improve energy utilization, an insulating foam layer 16 floats on the water bath heat preservation pool 5, and the connecting seat 12 is positioned above the insulating foam layer 16.

In operation, the drive motor 13 rotates the tension cymbal 9. The stretching net is discharged from the water bath preheating tank 4 under the action of the guide rollers 7, lifted to a certain height by one of the limit rollers 8, and then guided to the feeding end of the stretching cymbal 9 by the other limit roller 8. The side edge of the stretching net tangentially passes through the puncturing needles 14 to be combined with the periphery of the stretching cymbal 9, and along the lower half part of the stretching cymbal 9 along the rotation of the stretching cymbal 9, enters the water bath heat preservation pool 5 and is stretched by the stretching cymbal 9, and when the stretching net moves to the end, away from the water bath preheating pool 4, of the stretching cymbal 9 along with the stretching cymbal 9, the stretching net is stretched to a required width.

In the above process, since the stretching net is immersed in the water bath 5 during the stretching process and the stretching net passes through a part of the outer circumference of the cymbal 9, the overall stretching path is long. Therefore, the temperature of the stretched net which is easy to stretch can be kept in the stretching process, and the stretched net is not stretched at one stroke in a short-time short path, so that the probability that the stretched net can be pulled and damaged is reduced.

Meanwhile, the driving motors 13 are respectively installed outside the two tension cymbals 9 for speed reduction driving, and the two driving motors 13 are synchronized through electric linkage. The whole structure is simple, excessive transmission structures are not needed, and the structure is simple and convenient. The water bath heat preservation pool 5 does not need to be entered during maintenance and repair, and other parts such as the driving motor 13 can be maintained and replaced from the outside, so that the maintenance efficiency is improved by more than 3 times, and the operation is simple, convenient and safe.

Referring to fig. 3 and 4, in order to allow the stretching net to enter the stretching mechanism 6 more stably, the stretching net is connected to the stretching cymbal 9, two limiting wheels 17 are provided on the limiting roller 8, and one limiting wheel 17 corresponds to one stretching cymbal 9. The gap between the limiting wheels 17 is equal to or slightly larger than the smallest gap between the two tension cymbals 9. A limiting rod 18 is arranged between the two limiting rollers 8, and the limiting rod 18 is positioned on one side of the limiting wheel 17, which deviates from the other limiting wheel 17. The stopper rod 18 is fixedly connected to the two stopper rollers 8, and one end of the stopper rod 18 abuts against the cymbal 9. The two limiting rods 18 are provided and respectively correspond to the two limiting wheels 17.

The stretching net coming out of the water bath preheating tank 4 passes through the limiting roller 8 and then enters between the stretching cymbals 9. Due to the limit of the limit wheel 17, the motion track of the stretching net is limited, so that the stretching net can be better aligned with the stretching cymbal 9 after going out of the limit roller 8, and can be fixed by the puncture needles 14 on the periphery of the stretching cymbal 9.

The implementation principle of the water bath stretcher for stretching the net is as follows:

1. the unwinding mechanism 1 unwinds a stretching net, the stretching net enters the water bath preheating tank 4 to be heated under the guidance of the guide roller 7, and the stretching net leaves the water bath preheating tank 4 under the guidance of the guide roller 7;

2. after leaving the water bath preheating tank 4, the stretching net moves to the feed end of a stretching cymbal 9 under the guidance of a limiting roller 8, and is connected to the periphery of the stretching cymbal 9 under the action of a puncture needle 14 so as to move forwards along with the rotation of the stretching cymbal 9, and in the process, the stretching net is immersed in the water bath heat preservation tank 5;

3. the stretching net is transversely stretched to a required width in the process of moving along with the stretching cymbals 9, is discharged from the stretching mechanism 6, and is then wound by the winding mechanism 2, so that the stretching process is completed.

Example 2:

the difference between embodiment 2 and embodiment 1 is that, referring to fig. 5 and 6, two tension cymbals 9 form a tension cymbal group 19. The tension cymbal groups 19 are provided in number at intervals in the tension web feeding direction. The guide roller group further includes driving rollers 28, and the driving rollers 28 are provided between the adjacent two groups of cymbal groups 19. The tension net passes through the front tension cymbal group 19, then passes around the driving roller 28, and then passes around the rear tension cymbal group 19, thereby making full use of the peripheral circumference of the tension cymbal 9.

When in use, the number of the tension cymbals 19 required to be used can be selected according to actual working conditions. If the width of the stretching net which needs to be transversely stretched is large, a plurality of groups of stretching cymbals 19 are selected, so that the stretching net is transversely stretched to the required width after passing through a longer path, and the stretching net is not easily damaged in the processing process. If the width required for lateral stretching is small, a single stretching cymbal set 19 may be selected, resulting in a shorter processing time. Therefore, the water bath stretcher can be suitable for various different working conditions, and is wide in application range.

Example 3:

embodiment 3 differs from embodiment 1 in that, referring to fig. 7 and 8, two second drive assemblies 20 are further included, one second drive assembly 20 for each tension cymbal 9. The second drive assembly 20 is used to rotate the cymbal 9 relative to the stand 3. The width of the feeding end and the width of the discharging end of the stretching mechanism 6 are adjusted, so that the stretching mechanism can be better suitable for more working conditions.

Specifically, the stopper roller 8 near the feed end of the cymbal 9 is set as the first roller. The limiting wheel 17 on the first roller is connected with the first roller in a sliding way along the axial direction. The second driving assembly 20 includes a screw 21, a push block 22, and a servo motor 23. The screw rod 21 is parallel to the first roller, the screw rod 21 is in threaded connection with the base 3, the body of the servo motor 23 is fixedly mounted on the base, the output shaft of the servo motor 23 is connected with the screw rod 21, and the screw rod 21 can be driven to rotate through the servo motor 23. The push block 22 is rotatably connected to one end of the screw rod 21, and the push block 22 is fixedly arranged on the limiting wheel 17 on the first roller. The push block 22 is located on the side of the stop wheel 17 facing away from the other stop wheel 17. The end of the push block 22 far away from the limiting wheel 17 is rotatably connected or ball-jointed with a connecting block 24. The outer wall of the tension cymbal 9 is provided with a ring groove 25, and the section of the ring groove 25 is in an inverted T shape. Connecting block 24 is slidably connected within circumferential groove 25. Connecting seat 12 is provided with guide groove 27, guide groove 27 is connected with guide block 26 in a sliding manner, and driving motor 13 is fixedly mounted on guide block 26.

When the device is used, the screw rod 21 can be driven to rotate by the servo motor 23, so that the push block 22 is pushed to move along the axial direction of the limiting roller 8. The push block 22 has a driving force to the cymbal 9, so that the cymbal 9 rotates relative to the push block 22 around the rotation point of the push block 22 and the connecting block 24 while moving along with the push block 22, and the adjustment of the difference between the minimum distance and the maximum distance between the two cymbals 9 is realized. The guide block 26 now slides in the guide slot 27 so that the drive motor 13 can move with the tension cymbal 9 relative to the base 3.

At the same time, the limiting wheels 17 can be driven to follow, so that the distance between the two limiting wheels 17 is equal to or slightly larger than the minimum sum of the distances between the two cymbals 9, and the stretching net can be better connected with the puncture needles 14 on the cymbals 9.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A water bath stretcher for stretching a net, characterized in that: comprises a machine base (3), a water bath preheating pool (4), a guide roller set and a stretching mechanism (6), the water bath preheating tank (4) is used for heating the stretching net, the guide roller set is used for guiding the stretching net to sequentially pass through the water bath preheating tank (4) and the stretching mechanism (6), the stretching mechanism (6) comprises two stretching cymbals (9) which are symmetrically arranged along the vertical plane, a first driving assembly (10) for driving the stretching cymbals (9) to rotate along the central line thereof, one side of the stretching cymbal (9) facing to the other stretching cymbal (9) is provided with a guide surface (11) which is obliquely arranged, one end with a smaller gap formed between the peripheries of the two guide surfaces (11) is close to the water bath preheating pool (4), the outer wall of the tension cymbal (9) is provided with a puncture needle (14) along the periphery of the guide surface (11), the needles (14) are used to fix the tension net relative to the periphery of the guide surface (11) and to move the tension net forward with the rotation of the tension cymbal (9).

2. A water bath stretcher for stretching nets as claimed in claim 1, characterized in that: the first driving assembly (10) comprises two driving motors (13), one driving motor (13) corresponds to one tension cymbal (9), the driving motor (13) is installed on the stand (3) through the connecting seat (12), the body of the driving motor (13) is installed on the connecting seat (12) and the output shaft of the driving motor (13) is coaxially connected to the corresponding tension cymbal (9).

3. A water bath stretcher for stretching nets as claimed in claim 2, characterized in that: the guide surface (11) is arranged along the vertical direction, and the guide surface (11) and the feeding direction of the stretching net are obliquely arranged.

4. A water bath stretcher for stretching nets as claimed in claim 3, characterized in that: guide roller set includes two spacing rollers (8), one of them spacing roller (8) are located the discharge end of water bath preheating tank (4), another spacing roller (8) are located the feed end of tensile cymbal (9), be equipped with two spacing wheels (17) on spacing roller (8), one spacing wheel (17) correspond one and stretch cymbal (9), the clearance is the same with two minimum department sizes in clearance between the tensile cymbal (9) between spacing wheel (17), two be equipped with gag lever post (18) between spacing roller (8), gag lever post (18) fixed mounting is in spacing roller (8), gag lever post (18) are equipped with two and correspond two spacing wheels (17) respectively, gag lever post (18) are located gag lever post (17) and deviate from another gag lever post (17) one side.

5. A water bath stretcher for stretching nets as claimed in claim 2, characterized in that: the water bath stretcher further comprises a water bath heat preservation pool (5), and the lower half part of the stretching cymbal (9) is immersed in the water bath heat preservation pool (5).

6. A water bath stretcher for stretching nets as claimed in claim 5, characterized in that: the water bath heat preservation pool (5) is provided with a heat insulation foam layer (16) in a floating mode, the connecting seat (12) is located above the heat insulation foam layer (16), and the driving motor (13) is located above the connecting seat (12).

7. A water bath stretching machine for stretching nets according to claim 4, characterized in that: the stretching cymbal (9) is provided with a second driving assembly (20) for driving the stretching cymbal (9) to rotate relative to the base (3), the driving motor (13) is movably connected to the connecting seat (12) and the driving motor (13) moves relative to the base (3) along with the stretching cymbal (9); when the cymbal (9) rotates, the difference between the minimum distance and the maximum distance between the two cymbals (9) changes.

8. A water bath stretcher for stretching nets as claimed in claim 7, characterized in that: the limiting wheel (17) is connected to the limiting roller (8) in a sliding manner along the axial direction, each tension cymbal (9) corresponds to one second driving assembly (20), each second driving assembly (20) comprises a screw rod (21) in threaded connection with the base (3) and a push block (22) rotatably connected to one end of the screw rod (21), the push block (22) is positioned on one side, away from the other limiting wheel (17), of the limiting wheel (17), one end of the push block (22) is rotatably connected with a connecting block (24), an annular groove (25) is formed in the outer wall of the tension cymbal (9), the connecting block (24) is connected into the annular groove (25) in a sliding manner, and the connecting block (24) is axially fixed with the annular groove (25); when the push block (22) moves relative to the base (3), the tension cymbal (9) rotates relative to the push block (22) around the rotation point of the push block (22) and the connecting block (24).

9. A water bath stretcher for stretching nets as claimed in claim 8, characterized in that: the connecting seat (12) is provided with a guide groove (27), a guide block (26) is connected in the guide groove (27) in a sliding mode, and the driving motor (13) is fixedly installed on the guide block (26).

10. A water bath stretcher for stretching nets as claimed in claim 1, characterized in that: two tensile cymbals (9) form tensile cymbals group (19), tensile cymbals group (19) are provided with a plurality of along tensile net feeding direction interval, the guide roller group is used for leading tensile net to pass through water bath preheating tank (4) and all tensile cymbals group (19) in proper order.

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