CN220594012U - Film cooling water tank with spraying function - Google Patents

Abstract

The utility model relates to a film cooling water tank with an injection function in the technical field of film production for packaging, which comprises a cooling water tank arranged below an extruder die head, wherein cooling water is contained in an inner cavity of the cooling water tank, an annular injection pipe for a film to pass through is arranged at a position, which is positioned below the liquid level of the cooling water and is close to the liquid level of the cooling water, of the cooling water tank, the annular injection pipe is horizontally arranged, and a plurality of injection holes are uniformly arranged on an inner pipe body of the annular injection pipe along the circumferential direction of the annular injection pipe at intervals in a ring manner so as to reduce the water temperature of the cooling water, which is close to a film region; due to the arrangement of the annular jet pipe, the cooling water at the temperature of 0-1 ℃ flows towards the film blank, the water flow circulation of the corresponding area of the cold water tank is accelerated, the water temperature of the contact part of the cooling water and the film blank is rapidly reduced, the water temperature of the contact part of the cooling water and the film blank is ensured not to be higher than the required temperature, the heat exchange efficiency of the film is improved, the heat exchange is more sufficient, the plasticizing time of the film is shortened, the surface stress of the film is enhanced, the film is plasticized in advance in the process of reaching the bottom of the splayed plate, and the occurrence probability of overlapping edges with water is reduced.

Description

Film cooling water tank with spraying function

Technical Field

The utility model relates to the technical field of film production for packaging, in particular to a film cooling water tank with a spraying function.

Background

With the development of modern science and technology, plastic films have become an indispensable material in life, and the key core technology for producing films is in the process of film forming.

Chinese patent (publication number: CN 212446299U) discloses a cold and warm water tank for PVDC film blowing, the device cools and forms a plastic film to be formed by holding cooling water (0-4 ℃) in the cold water tank, but the device has some defects when in use: 1. because the position of the just-entering part of the plastic film and the position of the cold water contained in the cold water tank are unchanged all the time, the water temperature at the position in the cold water tank is higher (4 ℃ higher than the upper limit temperature), the cooling of the plastic film is affected, the stress of the plastic film is easy to be caused to be less than the requirement, and the surface of the subsequent film is provided with crease.

For this reason, we have devised a film cooling water tank with a spray function.

Disclosure of Invention

In order to overcome the defects in the background technology, the utility model discloses a film cooling water tank with a spraying function.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

the film cooling water tank with the spraying function comprises a cooling water tank arranged below an extruder die head, cooling water is contained in an inner cavity of the cooling water tank, an annular spraying pipe for a film to pass through is arranged at a position, which is positioned below the liquid level of the cooling water and close to the liquid level of the cooling water, of the inner side pipe body of the annular spraying pipe, and a plurality of spraying holes are annularly arranged at uniform intervals along the circumferential direction of the inner side pipe body of the annular spraying pipe so as to reduce the water temperature of the cooling water close to a film area;

the cold water tank inner chamber is equipped with square injection pipe in the position that is located annular injection pipe below, and square injection pipe level sets up, square injection pipe inboard pipe shaft is equipped with a plurality of jet holes along its circumference even spacer ring.

Preferably, the water temperature in the annular jet pipe is 0-1 ℃.

Preferably, the water temperature in the square injection pipe is 3.5-4.5 ℃.

Preferably, the distance between the annular jet pipe and the square jet pipe is 45 mm-50 mm.

Preferably, the bottom of the inner cavity of the cold water tank is provided with a squeeze roller group for rolling the film, so that liquid in the film can be cleaned conveniently.

Preferably, an inverted splayed plate is arranged above the extrusion roller set in the inner cavity of the cold water tank so that the thin film is flat before passing through the extrusion roller set;

the annular jet pipe and the square jet pipe are arranged on the upper section of the splayed plate.

Preferably, the inner side surface of the splayed plate is provided with a plurality of guide rollers arranged along the width direction at intervals along the length direction.

Preferably, the inner cavity of the cold water tank is also provided with an adjusting component for adjusting the distance and the included angle between the splayed plates.

Preferably, the adjusting assembly comprises an adjusting screw, an adjusting handle is arranged at the upper end of the adjusting screw, a sliding plate is correspondingly hinged at the lower end of the adjusting screw, a sliding plate base capable of sliding relatively is arranged on one side of the sliding plate, the sliding plate base is correspondingly fixedly connected with the inner cavity of the cold water tank, and a locking piece for locking the position of the sliding plate is arranged on the sliding plate; the adjusting screw body is in threaded connection with a threaded block, and the threaded block is in rotary connection with a corresponding splayed plate.

Preferably, the squeeze roller group comprises a driving steel roller, a driven rubber roller and driving equipment, wherein the driving steel roller and the driven rubber roller are rotatably connected to the inner cavity of the cold water tank, the driving equipment is used for adjusting the distance between the driven rubber roller and the driving steel roller, and the two end parts of the driven rubber roller are respectively provided with a diameter reducing part.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

1. due to the arrangement of the annular jet pipe, cooling water at 0-1 ℃ flows towards the film blank, water flow circulation in a corresponding area of the cooling water tank is accelerated, water temperature at a contact part of the cooling water and the film blank is rapidly reduced, water temperature at the contact part of the cooling water and the film blank is not higher than required temperature, film heat exchange efficiency is improved, heat exchange is more sufficient, film plasticizing time is shortened, surface stress of a film is enhanced, the film is plasticized in advance in the process of reaching the bottom of a splayed plate, and the occurrence probability of overlapping with water is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the structure of the cold water tank of the present utility model;

FIG. 4 is a schematic view of a squeeze roll set according to the present utility model;

fig. 5 is a schematic structural diagram of a splayed plate in the present utility model.

In the figure: 1. a cold water tank; 2. an annular jet pipe; 3. square jet pipe; 4. a squeeze roll set; 41. an active steel stick; 411. a drive motor; 42. a passive rubber roller; 5. splayed plate; 51. a guide roller; 52. a frame; 6. an adjustment assembly; 61. adjusting a screw; 62. adjusting the handle; 63. a slide plate; 64. a slide plate base; 65. a locking member; 66. a screw block; 67. a movable plate; 68. a fixing plate; 7. an adjustment structure; 71. a sliding rail pair; 72. a cylinder; 73. and a pressurizing cylinder.

Detailed Description

The present utility model will be explained in detail by the following examples, and the purpose of the present utility model is to protect all technical improvements within the scope of the present utility model, and in the description of the present utility model, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., only correspond to the drawings of the present application, and in order to facilitate description of the present utility model, it is not necessary to indicate or imply that the apparatus or element referred to has a specific orientation.

1-5, a film cooling water tank with a spraying function comprises a cooling water tank 1 arranged below an extruder die head, wherein cooling water is contained in an inner cavity of the cooling water tank 1; the cold water tank 1 may have a square structure as needed. Furthermore, the cold water tank 1 is also provided with a water temperature detection device and a temperature adjustment device, so that the cooling water of the cold water tank 1 is ensured to be maintained within the range of 0-4 ℃.

Specifically, the inner cavity of the cold water tank 1 is sequentially provided with a squeeze roller group 4 for rolling the film and an inverted splayed plate 5 from top to bottom,

the inner cavity of the cold water tank 1 is positioned below the liquid level of the cooling water, an annular injection pipe 2 for a film to pass through is arranged at a position close to the liquid level of the cooling water, the annular injection pipe 2 is horizontally arranged, and a plurality of injection holes are uniformly arranged on the inner side pipe body of the annular injection pipe 2 along the circumferential direction of the inner side pipe body at intervals in a ring manner so as to reduce the water temperature of the cooling water close to the film region;

the annular jet pipe 2 is installed at the upper end of the splayed plate 5 as required.

The water temperature in the annular jet pipe 2 is 0-1 ℃ according to the requirement; that is, the temperature of the water flow injected from the annular injection pipe 2 is 0 to 1 ℃.

In the example, the horizontal height of the annular jet pipe 2 is 20 mm-30 mm lower than the water level of the cold water tank, the annular jet pipe 2 is made of PFA material, the inner diameter is 11 mm-12 mm, and the annular jet pipe is connected with the cold water machine through a three-way pipe according to requirements. The inner side pipe body of the annular jet pipe 2 is provided with water spray holes with the aperture of 3 mm-4 mm at intervals of 18 mm-20 mm, so that the water spray holes can form 360-degree encircling film blanks.

According to the requirement, the water chiller adopts a water chiller with the water temperature adjusting range of 0-15 ℃, so that the water temperature is set to 0-1 ℃, the requirement of the annular jet pipe 2 is met, and the water chiller runs safely and stably; according to the requirement, the water inlet end of the annular jet pipe 2 is provided with a regulating valve, and the quantitative supply of the cooling water at the temperature of 0-1 ℃ can be realized by controlling the valve of the regulating valve.

After the water chiller is started, water is sprayed to the film blank through the water spraying holes, the water flow circulation of the corresponding area of the cold water tank 1 is accelerated, the water temperature of the contact part of cooling water and the film blank is rapidly reduced, the water temperature of the contact part of the cooling water and the film blank is ensured not to be higher than the required temperature, the film heat exchange efficiency is improved, the heat exchange is more sufficient, the film plasticizing time is shortened, the surface stress of the film is enhanced, the film is plasticized in advance in the process of reaching the bottom of the splayed plate 5, and the occurrence probability of overlapping edges with water is reduced.

The position that cold water tank 1 inner chamber is located annular injection pipe 2 below is equipped with square injection pipe 3, and square injection pipe 3 level sets up, and square injection pipe 3 inboard pipe shaft is equipped with a plurality of jet holes along its circumference even spacer ring.

According to the requirement, the square spray pipe 3 is arranged on the splayed plate 5, and the position height of the square spray pipe is 45 mm-50 mm lower than that of the annular spray pipe 2.

The water temperature in the square injection pipe 3 is 3.5-4.5 ℃ according to the requirement.

In the example, the square injection pipe 3 is a PBR hot melt plastic pipe with the inner diameter of 21 mm-25 mm, and water spray holes with the aperture of 3 mm-4 mm are formed on the inner side pipe body of the square injection pipe 3 at intervals of 18 mm-20 mm.

According to the requirement, the square injection pipe 3 is connected with a water chiller, and the water chiller adopts a water temperature adjusting range between 0 ℃ and 15 ℃, so that the water temperature is set to be 3.5 ℃ to 4.5 ℃, thereby not only meeting the requirement of the square injection pipe 3, but also ensuring the safe and stable operation of the water chiller; according to the requirement, the water inlet end of the square injection pipe 3 is provided with a regulating valve, and the quantitative supply of water at the temperature of 3.5-4.5 ℃ is realized by controlling the valve of the regulating valve.

After the cold water machine is started, the water spraying holes spray water to the film blank, so that the water circulation in the cold water tank is accelerated, the water temperature at the contact part of the cooling water and the film blank is rapidly reduced, the heat exchange efficiency of the film is improved, the heat exchange is more sufficient, the plasticizing time of the film is shortened, the surface stress of the film is further enhanced, the film is plasticized in advance in the process of reaching the bottom of the herringbone plate, and the occurrence probability of overlapping edges of the belt water is reduced.

The squeeze roller set 4 comprises a driving steel roller 41 and a driven rubber roller 42 which are rotatably connected with the inner cavity of the cold water tank 1; furthermore, the driving steel rod 41 is made of stainless steel, two ends of the driving steel rod are connected by two bearing seats with identical specification and model, and the bearing seats are fixed by foundation bolts; meanwhile, one end of the driving steel rod 41 is connected with a transmission motor 411 through a coupling, and when the driving steel rod 41 is in operation, the driving steel rod 41 is driven by the transmission motor 411 through the coupling, so that the driving steel rod 41 rotates 360 degrees in the axial tangential direction, and the function of stretching a film is achieved.

Specifically, the diameter of the passive rubber roller 42 is the same as that of the active steel roller 41, and the length of the roller surface is the same as that of the active steel roller 41;

when it should be noted, one side of the passive rubber roller 42 is provided with an adjusting structure 7 for adjusting the position of the passive rubber roller 42, so as to adjust the rolling force of the passive rubber roller 42 and the active steel roller 41 on the film blank.

Specifically, the adjusting structure 7 includes a sliding rail pair 71, and an air cylinder 72 and a pressurizing cylinder 73 for driving the sliding blocks in the sliding rail pair 71 to move, wherein the adjusting structure 7 is provided with two groups, and the sliding blocks in the sliding rail pair 71 in the two groups of adjusting structures 7 are respectively connected with two ends of the passive rubber roller 42 in a rotating way. The action of the same pressurizing cylinder 73 further increases the adhesion between the passive rubber roll 42 and the active steel roll 41, and will not be described in detail here.

Specifically, the two ends of the passive rubber roller 42 are supported and rotated through bearing blocks, and the bottoms of the bearing blocks are connected with sliding blocks in the sliding rail pairs 71 through foundation bolts.

More specifically, a circular hole groove is formed in the center of the bottom of the sliding block in the sliding rail pair 71 along the vertical direction of the passive rubber roller 42, the inner diameter of the hole groove is 30mm, the top of the sliding rail in the sliding rail pair 71 is in a circular column shape, the size of the sliding rail is matched with that of the circular hole groove, and the bottom of the sliding block in the sliding rail pair 71 is connected with the telescopic end of the air cylinder 72. When the air cylinders 72 act, the passive rubber roller 42 is tightly attached to the active steel roller 41 under the pressure of the air cylinders 72 at the two ends of the passive rubber roller.

According to the requirement, compared with the prior art, the hardness of the roller surface material of the passive rubber roller 42 is optimized from 80 degrees to 85 degrees. Therefore, the passive rubber roller 42 has better elasticity and larger bonding area with the film, which is more beneficial to the drainage of the film and the passive rubber roller 42 and prevents the film from overlapping with water.

In the example, the diameter of the passive rubber roll 42 is 200mm, the two ends of the roll body of the passive rubber roll 42 are provided with diameter reduction parts, the length of the diameter reduction parts is 20mm, and the diameter reduction parts are reduced by 4mm according to the requirement, that is, the diameter of the diameter reduction parts is smaller than the diameter of the roll body of the passive rubber roll 42 by 4mm. The arrangement is that the diameter-reduced part only contacts with the cooling water in the cooling water tank 1 when rotating, so that the cooling water forms vortex force distributed along the periphery under the action of centrifugal force generated in the movement process of the diameter-reduced part, the fluid pressure is increased, the movement of water flow is accelerated, the film heat exchange is more sufficient, and the temperature of the film is further reduced.

The splayed plate 5 comprises a left frame 52 and a right frame 52, wherein the two frames 52 have the same structure and are symmetrically arranged at intervals.

The frame 52 is provided with a plurality of guide rollers 51 arranged in the width direction thereof at intervals in the length direction thereof.

In the example, eight guide rollers 51 are provided, and the first roller to the eighth roller are arranged at intervals from top to bottom in sequence; wherein, the first roller to the seventh roller are respectively 400mm in length and 25mm in diameter, and the interval between two adjacent rollers is 10mm; the eighth roller had a length of 400mm and a diameter of 28mm, and was spaced 4mm from the seventh roller.

In the second embodiment, with reference to fig. 1-5, a film cooling water tank with a spraying function is characterized in that on the basis of the first embodiment, an adjusting component 6 for adjusting the distance and the included angle between splayed plates 5 is further arranged in the inner cavity of the cooling water tank 1;

the adjusting assembly 6 comprises an adjusting screw 61, an adjusting handle 62 is arranged at the upper end of the adjusting screw 61, a sliding plate 63 is correspondingly hinged at the lower end, a sliding plate base 64 capable of sliding relatively to the sliding plate 63 is arranged at one side of the sliding plate 63, the sliding plate base 64 is correspondingly fixedly connected with the inner cavity of the cold water tank 1, and a locking piece 65 for locking the position of the sliding plate 63 is arranged; the shaft of the adjusting screw 61 is in threaded connection with a threaded block 66, and the threaded block 66 is in rotary connection with the corresponding splayed plate 5.

Specifically, the lower end of the adjusting screw 61 is provided with an inverted L-shaped movable plate 67, and the horizontal section of the movable plate 67 is correspondingly connected with the lower end of the adjusting screw 61 through a nut, so that the adjusting screw 61 can rotate. The vertical section of the movable plate 67 is rotatably connected with the fixed plate 68 through the cooperation of a compression bolt and a compression nut or a pin shaft; wherein the fixing plate 68 is welded to the slide 63.

More specifically, the sliding plate 63 is arc-shaped and has two strip-shaped holes therein; the slide plate base 64 is also provided with two strip-shaped holes, and the strip-shaped holes of the slide plate 63 and the strip-shaped holes of the slide plate base 64 are fixed through compression bolts. When the process is required to be adjusted, the compression bolt is unscrewed, the sliding plate 63 can move at will in the direction of the strip-shaped hole of the sliding plate base 64, and when the process requirement is met, the compression bolt is screwed down, so that the positions of the two are fixed.

The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and range of equivalency are intended to be embraced therein.

Claims (10)

1. The utility model provides a film cooling water tank with spraying function, includes cold water tank (1) of locating the extruder die head below, and cold water tank (1) inner chamber holds 0 ℃ to 4 ℃ cooling water, its characterized in that: an inner cavity of the cold water tank (1) is positioned below the liquid level of the cooling water, an annular injection pipe (2) for a film to pass through is arranged at a position close to the liquid level of the cooling water, the annular injection pipe (2) is horizontally arranged, and a plurality of injection holes are uniformly arranged on the inner side pipe body of the annular injection pipe (2) along the circumferential direction at intervals in a circular manner so as to reduce the water temperature of the cooling water close to the film region;

the inner cavity of the cold water tank (1) is provided with a square injection pipe (3) at the position below the annular injection pipe (2), the square injection pipe (3) is horizontally arranged, and a plurality of injection holes are formed in the inner pipe body of the square injection pipe (3) along the circumferential uniform spacing ring.

2. The film cooling water tank with a spraying function according to claim 1, wherein: the water temperature in the annular jet pipe (2) is 0-1 ℃.

3. The film cooling water tank with a spraying function according to claim 1, wherein: the water temperature in the square spray pipe (3) is 3.5-4.5 ℃.

4. The film cooling water tank with a spraying function according to claim 1, wherein: the distance between the annular jet pipe (2) and the square jet pipe (3) is 45-50 mm.

5. The film cooling water tank with a spraying function according to claim 1, wherein: the bottom of the inner cavity of the cold water tank (1) is provided with a squeeze roller set (4) for rolling the film so as to clean the liquid in the film.

6. The film cooling water tank with a spraying function according to claim 5, wherein: an inverted splayed plate (5) is arranged above the extrusion roller set (4) in the inner cavity of the cold water tank (1) so that the thin film is flat before passing through the extrusion roller set (4);

the annular jet pipe (2) and the square jet pipe (3) are arranged on the upper section of the splayed plate (5).

7. The film cooling water tank with a spraying function according to claim 6, wherein: the inner side surface of the splayed plate (5) is provided with a plurality of guide rollers (51) which are arranged along the width direction at intervals along the length direction.

8. The film cooling water tank with a spraying function according to claim 6, wherein: an adjusting component (6) for adjusting the distance and the included angle between the splayed plates (5) is further arranged in the inner cavity of the cold water tank (1).

9. The film cooling water tank with a spraying function according to claim 8, wherein: the adjusting assembly (6) comprises an adjusting screw (61), an adjusting handle (62) is arranged at the upper end of the adjusting screw (61), a sliding plate (63) is correspondingly hinged at the lower end of the adjusting screw, a sliding plate base (64) capable of sliding relatively with the sliding plate base is arranged on one side of the sliding plate (63), the sliding plate base (64) is correspondingly fixedly connected to the inner cavity of the cold water tank (1), and a locking piece (65) for locking the position of the sliding plate (63) is arranged on the sliding plate base; the rod body of the adjusting screw (61) is in threaded connection with a threaded block (66), and the threaded block (66) is in rotary connection with the corresponding splayed plate (5).

10. The film cooling water tank with a spraying function according to claim 5, wherein: the extrusion roller set (4) comprises a driving steel roller (41) rotationally connected to the inner cavity of the cold water tank (1), a driven rubber roller (42) and driving equipment for adjusting the distance between the driven rubber roller (42) and the driving steel roller (41), and two end parts of the driven rubber roller (42) are respectively provided with a reducing part.