Hot-melt extrusion material cooling device

Abstract

The utility model relates to a cooling device, and provides a hot melt extrusion material cooling device which comprises a cooling box arranged at an extrusion port of an extruder, a plurality of cooling pipes arranged in the cooling box, a plurality of spray heads arranged on the side walls of the cooling pipes, and a supporting device arranged in the cooling box and used for supporting pipes, the supporting device comprises a spherical and hollow shell, through holes formed in the two ends of the shell, a water inlet pipe communicated with the lower end of the shell and a water supply device connected with the water inlet pipe. The pipe penetrates through the pair of through holes, and gaps are formed between the outer wall of the pipe and the inner walls of the through holes. The hot-melt extrusion material cooling device disclosed by the utility model not only can improve the cooling efficiency, but also can prevent a pipe from deforming in the cooling process.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling devices, and more particularly to a cooling device for hot-melt extrusion materials. Background Art

[0002] For most plastic pipes with large lengths, they are produced by extrusion. The main process is to extrude molten plastic through an extruder and then quickly cool it.

[0003] The cooling process usually uses water cooling, including water passing cooling and spraying cooling, etc. For the production of solid and small-diameter strip or linear products, water passing cooling can be used, that is, immersing the plastic wire into the cooling water for cooling. At this time, the height of the cooling water is lower than the height of the extrusion head of the extruder, and the plastic wire will bend downward after being extruded from the extrusion head and then enter the cooling water. However, for hollow and large-diameter tubular products, spraying cooling is usually adopted, that is, spraying the cooling water onto the surface of the pipe to cool it, so that the consistency of the pipe is better and it will not deform. But for some materials with a relatively large specific heat capacity (that is, slow cooling speed), pipes with large wall thickness and large diameter, and large toughness (that is, strong plasticity), conventional spray cooling may not be efficient. If the pipe cannot be quickly cooled after extrusion, the pipe may be slightly deformed under the action of its own gravity. If the cooling water flow rate is increased, the large impact of the cooling water may also cause the pipe to deform. Therefore, a cooling device that can provide a certain supporting effect during the cooling process of the pipe can be designed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cooling device for hot-melt extrusion materials, which can not only improve the cooling efficiency, but also avoid the deformation of the pipe during the cooling process.

[0005] The embodiment of the utility model is realized by the following technical solutions: The cooling device for hot-melt extrusion materials of the utility model includes a cooling box arranged at the extrusion outlet of the extruder, a plurality of cooling pipes arranged in the cooling box, a plurality of nozzles arranged on the side walls of the cooling pipes, and a supporting device arranged in the cooling box for supporting the pipe; the supporting device includes a spherical and hollow shell, through holes opened at both ends of the shell, a water inlet pipe communicated with the lower end of the shell, and a water supply device connected to the water inlet pipe; the pipe passes through a pair of the through holes, and there is a gap between the outer wall of the pipe and the inner wall of the through hole.

[0006] Furthermore, a plurality of the supporting devices are provided, and the plurality of supporting devices are distributed along the axial direction of the pipe.

[0007] Further, the housing is composed of a lower housing and an upper housing which are symmetrically arranged; the water inlet pipe is communicated with the lower housing; the upper housing is detachably connected to the lower housing.

[0008] Further, connecting plates are provided on the sides of both the upper housing and the lower housing. The connecting plates are provided with connecting holes, and bolts are arranged in the connecting holes.

[0009] Further, the supporting device further includes sleeves clamped on the inner walls of the through holes; the sleeves are arranged in a pair of the through holes; the pipe passes through the sleeves, and a gap is provided between the outer wall of the pipe and the inner wall of the sleeve.

[0010] Further, a ring-shaped connecting ring is provided at one end of the sleeve outside the through hole. A fixing plate is provided on the connecting ring, and a jack is provided on the fixing plate; the jack corresponds to one of the through holes.

[0011] Further, the lower housing is detachably connected to the water inlet pipe; a bottom plate is provided at the lower end of the water inlet pipe, and the bottom plate is fixedly connected to the inner bottom wall of the cooling tank; the water supply device includes a water pump and a water outlet pipe connected to the outlet end of the water pump; the water outlet pipe is communicated with the water inlet pipe, and the water pump is arranged at the inner bottom of the cooling tank.

[0012] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: In the hot melt extrusion material cooling device of the present invention, when in use, the pipe extruded from the extruder enters the housing through the through hole and is discharged from the through hole at the other end. During this process, the cooling water is sprayed out from the nozzle of the cooling pipe to cool the pipe. And the water supply device sends the cooling water into the water inlet pipe and then into the housing. The water in the housing plays a role in supporting and cooling the pipe in the housing. It can not only quickly cool the large-diameter and thick-wall pipe, but also prevent the large-diameter and thick-wall pipe from bending and deforming, and can produce the pipe more efficiently and with a high yield rate. Description of the Drawings

[0013] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required to be used in the embodiment will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of the hot melt extrusion material cooling device provided by the embodiment of the present invention;

[0015] Figure 2Structural schematic diagram of a perspective inside the cooling box provided by an embodiment of the present utility model;

[0016] Figure 3 Structural schematic diagram of a second perspective inside the cooling box provided by an embodiment of the present utility model;

[0017] Figure 4 Structural schematic diagram of the inside of the housing provided by an embodiment of the present utility model;

[0018] Figure 5 Structural schematic diagram of a part of the support device provided by an embodiment of the present utility model;

[0019] Figure 6 Structural schematic diagram of the unfolded part of the support device provided by an embodiment of the present utility model;

[0020] Figure 7 Structural schematic diagram of a part of the sleeve provided by an embodiment of the present utility model.

[0021] Reference numerals: 11 - extruder, 12 - cooling box, 13 - cooling pipe, 14 - nozzle, 15 - pipe, 20 - support device, 21 - upper housing, 22 - lower housing, 23 - through hole, 24 - water inlet pipe, 25 - connecting plate, 26 - connecting hole, 27 - bolt, 28 - sleeve, 29 - connecting ring, 210 - fixing plate, 211 - jack, 212 - bottom plate, 213 - water outlet pipe. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the application product is usually placed during use, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Embodiment

[0028] The following is further described in conjunction with specific embodiments. As shown in the attached Figure 1 - attached Figure 7 As shown in the figure, the hot melt extrusion material cooling device of this embodiment includes a cooling box 12 provided at the extrusion outlet of the extruder 11, a plurality of cooling pipes 13 provided in the cooling box 12, a plurality of nozzles 14 provided on the side walls of the cooling pipes 13, and a support device 20 provided in the cooling box 12 for supporting the pipe 15; the support device 20 includes a spherical and hollow shell, through holes 23 opened at both ends of the shell, a water inlet pipe 24 communicated with the lower end of the shell, and a water supply device connected to the water inlet pipe 24; the pipe 15 is arranged through a pair of through holes 23, and there is a gap between the outer wall of the pipe 15 and the inner wall of the through hole 23. Specifically, when in use, the pipe 15 extruded from the extruder 11 enters the shell through the through hole 23 and then exits from the through hole 23 at the other end. During this process, the cooling water is sprayed out from the nozzles 14 of the cooling pipe 13 to cool the pipe 15. And the water supply device sends the cooling water into the water inlet pipe 24 and then into the shell. The water in the shell plays a role in supporting and cooling the pipe 15 in the shell. It can not only quickly cool the pipe 15 with a large diameter and large thickness, but also prevent the pipe 15 with a large diameter and large thickness from bending and deforming, and can produce the pipe 15 more efficiently and with a high yield rate.

[0029] There are multiple support devices 20 in this embodiment, and the multiple support devices 20 are distributed along the axial direction of the pipe 15. Specifically, the multiple support devices 20 can better support the pipe 15.

[0030] The housing in this embodiment is composed of a lower housing 22 and an upper housing 21 which are symmetrically arranged; the water inlet pipe 24 is communicated with the lower housing 22; the upper housing 21 and the lower housing 22 are detachably connected. Connecting plates 25 are provided on the sides of the upper housing 21 and the lower housing 22, connection holes 26 are formed in the connecting plates 25, and bolts 27 are arranged in the connection holes 26. Specifically, since the gap between the outer wall of the pipe 15 and the through hole 23 is not large, it is difficult to quickly pass the pipe 15 that has not been fully cured through the through hole 23. Therefore, at the beginning of production, the pipe 15 is extruded from the extruder 11. At this time, the upper housing 21 needs to be removed first to facilitate the entry of the pipe 15. After the quality of the pipe 15 is stable, the upper housing 21 can be fixed on the lower housing 22.

[0031] The support device 20 in this embodiment further includes a sleeve 28 clamped on the inner wall of the through hole 23; sleeves 28 are arranged in both of the pair of through holes 23; the pipe 15 is arranged through the sleeve 28, and there is a gap between the outer wall of the pipe 15 and the inner wall of the sleeve 28. Specifically, there must be a gap between the pipe 15 and the through hole 23 during use to ensure the normal discharge of the coolant. Therefore, for pipes 15 with different diameters, the gap between the outer wall of the pipe 15 and the inner wall of the through hole 23 needs to be adjusted. Compared with directly replacing the housing, it is more convenient to clamp a sleeve 28 adapted to the outer diameter of the pipe 15 on the through hole 23 of the housing. Corresponding sleeves 28 can be pre-designed and produced according to pipes 15 with different pipe diameters, so that the housing has better versatility.

[0032] One end of the sleeve 28 in this embodiment, which is arranged outside the through hole 23, is provided with an annular connecting ring 29, a fixing plate 210 is arranged on the connecting ring 29, and a jack 211 is formed in the fixing plate 210; the jack 211 corresponds to one of the through holes 23. Specifically, through the connecting ring 29, the fixing plate 210 and the jack 211, the sleeve 28 can be better fixed.

[0033] The lower housing 22 and the water inlet pipe 24 in this embodiment are detachably connected; a bottom plate 212 is arranged at the lower end of the water inlet pipe 24, and the bottom plate 212 is fixedly connected to the inner bottom wall of the cooling box 12; the water supply device includes a water pump and a water outlet pipe 213 connected to the outlet end of the water pump; the water outlet pipe 213 is communicated with the water inlet pipe 24, and the water pump is arranged at the inner bottom of the cooling box 12. Specifically, the water sprayed by the nozzle 14 of the cooling pipe 13 will be stored in the cooling box 12, so the water pump can directly suck the water in the cooling box 12.

[0034] In summary, for the hot melt extrusion material cooling device of this embodiment, when in use, the pipe 15 extruded from the extruder 11 enters the housing through the through hole 23 and is discharged from the through hole 23 at the other end. During this process, the cooling water is sprayed from the nozzle 14 of the cooling pipe 13 to cool the pipe 15. And the water supply device sends the cooling water into the water inlet pipe 24 and then into the housing. The water in the housing plays a role in supporting and cooling the pipe 15 in the housing. It can not only quickly cool the pipe 15 with a large diameter and large thickness, but also prevent the pipe 15 with a large diameter and large thickness from bending and deforming, and can produce the pipe 15 more efficiently and with a high yield rate.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cooling device for a hot melt extrusion material, characterized in that: It includes a cooling box (12) provided at the extrusion outlet of an extruder (11), a plurality of cooling pipes (13) provided in the cooling box (12), a plurality of spray heads (14) provided on the side walls of the cooling pipes (13), and a support device (20) provided in the cooling box (12) for supporting a pipe (15); The support device (20) includes a spherical and hollow housing, through holes (23) opened at both ends of the housing, a water inlet pipe (24) communicated with the lower end of the housing, and a water supply device connected to the water inlet pipe (24); the pipe (15) is arranged through a pair of the through holes (23), and there is a gap between the outer wall of the pipe (15) and the inner wall of the through hole (23).

2. The hot melt extrusion material cooling device according to claim 1, characterized in that: A plurality of the support devices (20) are provided, and the plurality of support devices (20) are distributed along the axial direction of the pipe (15).

3. The hot melt extrusion material cooling device according to claim 1, characterized in that: The housing is composed of a lower housing (22) and an upper housing (21) which are symmetrically arranged; the water inlet pipe (24) is communicated with the lower housing (22); The upper housing (21) is detachably connected to the lower housing (22).

4. The hot melt extrusion material cooling device according to claim 3, characterized in that: Both the side edges of the upper housing (21) and the lower housing (22) are provided with connecting plates (25), the connecting plates (25) are provided with connecting holes (26), and bolts (27) are arranged in the connecting holes (26).

5. The hot melt extrusion material cooling device according to claim 4, characterized in that: The support device (20) further includes sleeves (28) clamped on the inner walls of the through holes (23); the sleeves (28) are arranged in both of the pair of through holes (23); the pipe (15) is arranged through the sleeves (28), and there is a gap between the outer wall of the pipe (15) and the inner wall of the sleeve (28).

6. The hot melt extrusion material cooling device according to claim 5, characterized in that: One end of the sleeve (28) arranged outside the through hole (23) is provided with an annular connecting ring (29), a fixing plate (210) is arranged on the connecting ring (29), and a jack (211) is opened on the fixing plate (210); the jack (211) corresponds to one of the through holes (23).

7. The hot melt extrusion material cooling device according to claim 3, characterized in that: The lower housing (22) is detachably connected to the water inlet pipe (24); a bottom plate (212) is arranged at the lower end of the water inlet pipe (24), and the bottom plate (212) is fixedly connected to the inner bottom wall of the cooling box (12); The water supply device includes a water pump and a water outlet pipe (213) connected to the outlet end of the water pump; the water outlet pipe (213) is communicated with the water inlet pipe (24), and the water pump is arranged at the inner bottom of the cooling box (12).

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