CN201361978Y

CN201361978Y - Inner cooling device in production line of heat shrinkable films

Info

Publication number: CN201361978Y
Application number: CNU2009201151499U
Authority: CN
Inventors: 陈大魁
Original assignee: ZHEJIANG ZHONGCHENG PACKING MATERIAL CO Ltd
Current assignee: ZHEJIANG ZHONGCHENG PACKING MATERIAL CO Ltd
Priority date: 2009-03-11
Filing date: 2009-03-11
Publication date: 2009-12-16
Anticipated expiration: 2019-03-11

Abstract

An inner cooling device in the production line of heat shrinkable films comprises a T-shaped spindle, water sumps A, B, C and D and spiral copper pipes, which respectively form a cooled working medium loop and a cooled air loop; cool air is injected from the interior of a mother film into the interior surface thereof; with the coordination of an external cooling device in the prior art, the interior surface and the exterior surface of the mother film are cooled simultaneously, thus overcoming the defect that only the exterior surface is cooled in the conventional technique, therefore, the transparency is not high and the film is easy to curl.

Description

Interior device for cooling in the heat shrink films production line

Technical field

The utility model belongs to plastic shaping or connects group, i.e. B29C, the particularly interior device for cooling of female film in International Patent Classification (IPC).

Background technology

Present known heat shrink films appearance process for cooling commonly used aborning, but do not have the inner surface cooling procedure, so inner surface and outer surface inhomogeneous cooling are even, the polymer crystallization degree increases, cause the product transparency to reduce, in addition because be that the single face cooling makes film take place easily to curl.

The utility model content

The purpose of this utility model provides the interior device for cooling in a kind of heat shrink films production line.Use this device and conventional outer cooling equipment to cooperate, can make the inside and outside evenly cooling simultaneously of female film, to overcome the even drawback of bringing transparency to reduce and curl easily of inhomogeneous cooling.

The utility model is the interior device for cooling in the heat shrink films production line, it is characterized in that this device is fixed among columnar female film from the top down, and it is made up of T font main shaft and housing; Said housing is made up of sump A, the sump B, sump C and the sump D that independently are communicated with successively by the working medium duct again separately from the top down; Main shaft tight fit from the top down passes each sump, fixes with nut and sump D bottom centre; The main shaft upper end forms ring cavity with sump A top seal, and this cavity has the working medium passage that is communicated with atmosphere, sump A respectively up and down, and water inlet pipe penetrates from main shaft right side tight fit, and outlet of water inlet pipe lower end and main shaft lower ending opening and sump D are communicated with; The spirality copper pipe that the equally distributed respective sets of circumference is arranged in sump B and the sump C, copper pipe in the sump B is suitable for reading to be communicated with atmosphere by the air duct between sump A and the sump B, and the copper pipe end opening in the sump C is communicated with atmosphere by the air duct between sump C and the sump D; Main shaft on an empty stomach, upper end and waist have air duct, the upper end air duct links to each other with compressed air source, the air duct of waist and the interior copper pipe end opening of sump B and sump C be interior, and copper pipe is suitable for reading communicates; Suitable for reading and the cooling working medium source of above-mentioned water inlet pipe links to each other.

The utility model is in process on probation, cooling working medium for example cold water enters from water inlet pipe is suitable for reading, after end opening passes through each sump from bottom to top successively, flow out from main shaft working medium passage, thereby the air in the cooling copper tube group, constitute the cooling working medium loop and the air loop that is cooled, cooled air evenly sprays to female film inwall, outside prior art under the cooperation of cooling device, thereby make inner surface consistent, female film is caught a cold evenly, improve the shrinkage of film with the outer surface formation temperature, comprise and enhancing the transparency, overcome curling disadvantage.

Description of drawings

Fig. 1 cuts open schematic diagram for the utility model axle.

Fig. 2 is the A-A cross-sectional schematic of Fig. 1.This example is six groups of copper pipes.

Wherein: 1. main shaft, 2. sump A, 3. copper pipe, 4. sump B, 5. sump C, 6. sump D, 7. female film, 8 nuts, 9. delivery ports, 10. air inlet, 11. water inlet pipes

The specific embodiment

Interior device for cooling in a kind of heat shrink films production line is characterized in that this device is fixed among columnar female film 7 from the top down, and it is made up of T font main shaft 1 and housing; Said housing is made up of sump A2, the sump B4, sump C5 and the sump D6 that independently are communicated with successively by the working medium duct again separately from the top down; Main shaft 1 tight fit from the top down passes each sump 2,4,5,6, fixes with sump D6 bottom centre with nut 8; Main shaft 1 upper end and sump A2 top seal form ring cavity, this cavity has the working medium passage that is communicated with atmosphere, sump A2 respectively up and down, water inlet pipe 11 penetrates from main shaft 1 right side tight fit, and outlet of water inlet pipe 11 lower ends and main shaft 1 lower ending opening and sump D6 are communicated with; The spirality copper pipe 3 that the equally distributed respective sets of circumference is arranged in sump B4 and the sump C5, copper pipe 3 air ducts that pass through between sump A2 and the sump B4 suitable for reading in the sump B4 are communicated with atmosphere, and the copper pipe end opening in the sump C5 is communicated with atmosphere by the air duct between sump C5 and the sump D6; Main shaft 1 on an empty stomach, upper end and waist have air duct, the upper end air duct links to each other with compressed air, the air duct of waist and the interior copper pipe end opening of sump B4 and sump C5 be interior, and copper pipe is suitable for reading communicates; Suitable for reading and the cooling working medium source of above-mentioned water inlet pipe 11 links to each other.

In Fig. 1, Fig. 2, by welding copper pipe 3 is installed at sump B4, sump C5, six five equilibriums are uniform as Fig. 2, carry out fine finishining after sump A2, sump B4, sump C5, sump D6 are welded to each other into integral body, and are fixing with nut 8 with main shaft 1 and sump A2, sump B4, sump C5, sump D6 again.Water inlet pipe 11 by main shaft 1 is that the working medium passage adds cooling fluid, (for example: cooling water), after cooling fluid is passed through sump D6, sump C5, sump B4, sump A2 successively, delivery port 9 by main shaft is that the working medium passage flows out, the cooling copper tube 3 that circulates thus is when gas is that air duct enters and is assigned in each copper pipe 3 from the air inlet 10 of main shaft 1.After gas was cooled off accordingly, the air duct from sump A2 and sump B4, sump C5 and sump D6 connection place blew out respectively, is also fully cooled off with regard to female film 7 inwalls like this, and female film 7 is caught a cold evenly.

Claims

Interior device for cooling in a kind of heat shrink films production line is characterized in that this device is fixed among columnar female film [7] from the top down, and it is made up of T font main shaft [1] and housing; Said housing is by the independent separately sump A[2 that is communicated with successively by the working medium duct again from the top down], sump B[4], sump C[5] and sump D[6] form; Main shaft [1] tight fit from the top down passes each sump [2,4,5,6], with nut [8] and sump D[6] bottom centre fixes; Main shaft [1] upper end and sump A[2] top seal formation ring cavity, this cavity has up and down respectively and atmosphere, sump A[2] the working medium passage that is communicated with, water inlet pipe [11] penetrates from main shaft [1] right side tight fit, the outlet of water inlet pipe [11] lower end and main shaft [1] lower ending opening and sump D[6] be communicated with; Sump B[4] and sump C[5] in the spirality copper pipe [3] of the equally distributed respective sets of circumference is arranged, sump B[4] in copper pipe [3] suitable for reading by sump A[2] and sump B[4] between air duct be communicated with sump C[5 with atmosphere] interior copper pipe end opening passes through sump C[5] and sump D[6] between air duct be communicated with atmosphere; Main shaft [1] on an empty stomach, upper end and waist have air duct, the upper end air duct links to each other with compressed air source, the air duct of waist and sump B[4] interior copper pipe end opening and sump C[5] interior copper pipe is suitable for reading communicates; Suitable for reading and the cooling working medium source of above-mentioned water inlet pipe [11] links to each other.