CN205167811U - Version roller is pressed to enhanced heat transfer section mould - Google Patents

Abstract

The utility model discloses a heat-transfer-enhanced mold plate roller, which comprises a left plug head, a right plug head and a plate roller tube wall. A cold liquid chamber and several hot liquid chambers are arranged in the plate roller tube wall; the hot liquid pipe and the A hot liquid passage is formed between the hot liquid chambers; along the circumferential direction of the hot liquid pipe, several hot liquid passage holes communicating with the hot liquid pipe are provided; along the axial direction of the hot liquid pipe, there are also There are several baffle groups, and the baffle groups include an even number of baffles in a right-angled triangle structure; the baffles of the same baffle group are distributed centrally and axisymmetrically with respect to the central axis of the hot liquid pipeline. The utility model has the advantages of less consumption of hot oil and cold oil, less deformation of the film in the production process, good flatness and the like.

Description

A heat transfer-enhanced molded embossing roller

technical field

The utility model relates to the field of a mold embossing roller for a holographic embossing machine, in particular to an enhanced heat transfer type mold embossing roller.

Background technique

Holographic molding machine is a kind of machine for processing film material to make it have holographic visual effect. There has been a holographic molding machine with double molding stations, on which two plate rollers are used to carry out the first molding and the second molding successively. Its working principle is: the first version of the roller can produce intermittent holographic patterns on the film material; the second version of the roller can also produce intermittent holographic patterns on the film material, and the double molding station holographic molding machine will produce the second molding. The holographic pattern is embossed in the blank space of the holographic image produced by the first embossing, so that the film material after the two embossings presents a continuous holographic pattern without seams.

The structure of the first version roll and the second version roll of the existing above-mentioned machine is shown in Fig. 1 and Fig. 2 . It includes left plug, right plug, plate roller tube wall and holographic plate. The hot oil pipe with a small hole in the pipe wall extends into the inner cavity of the tube wall of the plate roller through the right plug, injects hot oil into the inner cavity of the tube wall of the plate roller, and the hot oil passes through the gap between the hot oil tube and the right plug. The plug connector returns to the hot oil tank, forming a heating cycle for the plate roll as a whole. There is a long hole-shaped cold oil chamber on the tube wall of the plate roller. The cold oil cavity is arranged along the longitudinal direction of the plate roller tube wall at a position close to the holographic plate slit, and extends into the cold oil cavity and the tube wall is opened. The cooling oil pipe with a small hole, the cold oil fills the cooling oil chamber from the small hole of the cooling oil pipe, and flows back to the cold oil tank from the gap between the cooling oil pipe and the cooling oil chamber through the oil channel in the left plug and the left plug connector. A local cooling cycle of the counter roller is formed. The higher temperature part of the plate roll can emboss the holographic pattern on the film material; the lower temperature part will not emboss the holographic pattern on the film material, so such a plate roll can make the holographic pattern appear intermittently.

However, the plate roll with the above structure still has some shortcomings in actual production: some areas between the holographic pattern produced by the second embossing and the holographic pattern produced by the first embossed are overlapped together (this is because the holographic The level of the pattern is related to the molding temperature. When the film material is molded, it goes through the process of changing from cold to hot and then cold again. Correspondingly, the holographic pattern produced on it will change from shallow to deep and then shallow, forming a layer transition zone. In order to make the final holographic The pattern is continuous, it is necessary to overlap the layer transition area of the holographic pattern produced by the two times of molding), the temperature transition of the plate roller with the above structure is faster, so that the layer transition area of the holographic pattern is narrower, and it is very fast when the second molding is carried out. It is easy to cause excessive or insufficient overlap, resulting in obvious "bright bands" or "transparent bands" on the final film material, affecting product quality. In addition, the plate roller with the above structure consumes a large amount of hot oil, which indirectly leads to a large power consumption of the holographic molding machine and increases the production cost.

For this reason, it is necessary to study a molded embossing roller with reasonable structure, good molding effect and lower power consumption of the whole machine.

Utility model content

The purpose of the utility model is to provide a molded plate roller with a low amount of hot oil, a reasonable structure, and a good molding effect.

In order to achieve the above object, the utility model adopts the following technical solutions:

An enhanced heat transfer mold embossing plate roller, including a left plug head, a right plug head and a plate roller tube wall, a cooling liquid chamber is arranged in the plate roller tube wall, and the cold liquid chamber is connected to a cold liquid source through a cold liquid connection channel; In particular, several hot liquid chambers are arranged in the tube wall of the plate roller, and a hot liquid pipe for transporting hot liquid is arranged in the hot liquid chamber, and a hot liquid channel is formed between the hot liquid pipe and the hot liquid chamber; The hot liquid channel and the hot liquid pipe are connected to the hot liquid source through the hot liquid connection channel; along the circumference of the hot liquid pipe, several hot liquid through holes are arranged on the hot liquid pipe, and the hot liquid through holes communicate with the hot liquid pipe; Along the axial direction of the hot liquid pipe, several spoiler groups are also arranged on the hot liquid pipe, and the spoiler group includes an even number of spoilers in a right-angled triangle structure; the spoilers of the same spoiler group are relatively hot liquid The central axis of the pipeline is distributed symmetrically and axisymmetrically; the acute-angle vertices of the right-angled side b of the spoilers of the same spoiler group are located on the same vertical plane and the right-angled side a is perpendicular to the central axis of the hydrothermal pipe, and the spoiler A certain deviation angle θ is formed between the right-angled side b and the central axis of the hot liquid pipe; the spoiler group is connected to the outer surface of the hot liquid pipe at a certain distance S along the axial direction of the hot liquid pipe.

The hot fluid can be thermal oil, while the cold fluid can be water or cooling oil.

The number of spoilers constituting the same spoiler group is an even number, such as 2, 4 or 8.

Principle of the present utility model is as follows:

The hot liquid channel and the hot liquid pipe are connected to the hot liquid source, and the hot liquid flowing through the hot liquid channel can heat and insulate the plate roll tube wall near the hot liquid channel, so that the outer surface of the plate roll tube wall corresponding to this place can be Molded holographic pattern. The cold liquid chamber is connected to the cold liquid source, and the cold liquid in the cold liquid chamber can cool and keep warm the plate roller tube wall near the cold liquid chamber, so that the outer surface of the plate roller tube wall corresponding to this place cannot be molded with a holographic pattern. The molded plate roller concentrates heat supply to the position close to the outer surface of the tube wall of the plate roller, which greatly reduces the consumption of hot oil.

The hot liquid flows from the hot liquid source through the hot liquid pipe into the embossing plate roller, and flows into the hot liquid cavity through the hot liquid through hole. The hot liquid is forced to generate a longitudinal vortex through the right-angled triangular turbulent fins arranged on the hot liquid pipe and arranged in the hot liquid chamber, and a plurality of turbulent fins are symmetrically arranged in each area of the cross section of the hot liquid chamber, so that each turbulent The longitudinal vortex generated by the flow sheet is distributed cooperatively in the hot liquid chamber, and the spaced arrangement of the spoiler in the fluid flow direction ensures that the vortex is continuously generated in the hot liquid chamber, which greatly enhances the heat transfer between the hot liquid and the plate roll tube wall Effect, thereby reducing the amount of hot oil used for the plate roller, indirectly leading to a reduction in the overall power consumption of the molding machine and a reduction in production costs.

A baffle may be provided in the inner chamber of the tube wall of the version roller, and the partition board is used to divide the inner cavity of the tube wall of the version roller into a first inner cavity and a second inner cavity which are not communicated with each other; the hot liquid chamber is close to the second inner cavity And away from the first inner chamber; the second inner chamber is a cold liquid chamber, and the cold liquid chamber is connected to a cold liquid source through a cold liquid connection channel. Therefore, the cold oil only needs to flow in the cold liquid chamber, that is, the second inner chamber, and the volume of the cold liquid chamber becomes smaller, thereby reducing the amount of cooling oil used for the plate roller. The partition is preferably curved, with its curved inner side facing away from the hot liquid chamber. The bending angle of the inner side of the separator can affect the range of the cold end of the plate roller tube wall, and the angle α is preferably between 30° and 160°.

In order to generate an effective longitudinal vortex, preferably, a deviation angle θ<90° is formed between the right-angle side b of the spoiler and the central axis of the hot liquid pipe.

In order to reduce the influence of the spoiler on the flow resistance, the length of the right-angled side a of the spoiler is preferably shorter than the length of the right-angled side b.

The utility model adopts local heating instead of the overall heating adopted in the prior art, and the spoiler group on the hot oil pipeline can make the velocity vectors of the longitudinal eddies in the cross section of the hot liquid channel cooperate with each other, and optimize the flow field structure , while strengthening the heat exchange between the hot liquid and the tube wall of the plate roller, it can effectively reduce the increase of the flow resistance in the hot liquid channel, so that the overall energy consumption of the molding machine can be greatly reduced, saving more than 80% of heat energy. At the same time, because the overall temperature of the plate roll is low, on the one hand, the safety of the equipment can be improved, and on the other hand, the thermal deformation of the plate roll can be greatly reduced. Therefore, the film deformation in the production process of the utility model is small, and the flatness is good, which can reach high quality requirements.

Description of drawings

Fig. 1 is the structural representation of existing embossing plate roller;

Fig. 2 is a schematic sectional view of A-A in Fig. 1;

Fig. 3 is the schematic diagram of mold embossing roller in the utility model embodiment 1;

Fig. 4 is the schematic diagram of the hot liquid pipeline in the utility model embodiment 1;

Fig. 5 is a schematic diagram of the distribution of spoilers in Embodiment 1 of the present utility model;

Fig. 6 is a schematic structural view of the spoiler in Embodiment 1 of the present utility model;

Fig. 7 is a schematic diagram of the longitudinal vortex produced by the spoiler in Embodiment 1 of the utility model;

Fig. 8 is a schematic diagram of the spacing of each spoiler group in Embodiment 1 of the present utility model;

Fig. 9 is a schematic diagram of the generation of longitudinal cooperative eddies in the hot liquid chamber in Example 1 of the present utility model;

Fig. 10 is a schematic diagram of the longitudinal synergistic vortex generated in the hot liquid cavity in the second embodiment of the present invention.

Explanation of reference signs: 1-plate roller tube wall; 2-partition plate; 3-first inner cavity; 4-second inner cavity; 5-hydrothermal chamber; 6-hydrothermal pipe; 8- Spoiler.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Example 1:

As shown in the figure, the embossed plate roll is provided with a partition 2 in the inner cavity of the plate roll tube wall 1. The outer contour of the partition plate 2 is curved, and its curved inner side faces away from the hot liquid chamber. , and the bending angle α of the separator 2 is 120°. The partition 2 divides the inner cavity of the plate roller tube wall 1 into a first inner cavity 3 and a second inner cavity 4 that are not connected to each other; the first inner cavity 3 is far away from the hot liquid chamber 5, and the second inner cavity 4 is close to the hot liquid chamber 5; the second inner chamber 4 is a cold liquid chamber. Those skilled in the art can also use the existing technology to connect the second inner chamber 4 to the cold liquid source through the cold liquid connection channel, so as to realize the circulation of the cold liquid in the second inner chamber 4 .

As shown in the figure, a plurality of hot liquid chambers 5 are arranged in the tube wall 1 of the plate roller, and a hot liquid pipeline 6 is arranged in each hot liquid chamber 5 . There is a gap between the hot liquid pipe 6 and the hot liquid chamber 5, and the gap is a hot liquid channel. Those skilled in the art can also use the existing technology to connect the hot liquid pipe 6 and the hot liquid channel to the hot liquid source through the hot liquid connection channel, so as to realize the circulation of the hot liquid in the hot liquid pipe 6 and the hot liquid channel.

As shown in the figure, along the axial direction of the hot liquid pipe 6 and the circumferential direction of the hot liquid pipe 6, the hot liquid pipe 6 is provided with a plurality of hot liquid through holes 7, and these hot liquid through holes 7 communicate with the hot liquid pipe 6 . Along the circumferential direction of the hot liquid pipe 6 , several spoiler groups are connected to the outer surface of the hot liquid pipe 6 . In this embodiment 1, each spoiler group is composed of 6 spoilers in a right triangle structure, and the 6 spoilers 8 are distributed axisymmetrically and centrally symmetrically with respect to the central axis of the hot liquid pipeline 6 . The right-angled side a of each spoiler 8 is all perpendicular to the central axis of the hot liquid pipeline 6, and the endpoints at the acute angles of the right-angled side b of each spoiler 8 are all on the same vertical plane, and each spoiler 8 A certain deviation angle θ is formed between the right-angle side b and the central axis of the hot liquid pipeline 6 . The spoiler groups are arranged at intervals along the axial direction of the hot liquid pipe 6 with the same spacing S, and the value of the spacing S of the spoiler groups and the distance d between the spoilers 8 is determined by the size and deflection angle of the spoilers 8 , in this embodiment 1, in the case of a/b=0.5 and θ=30°, S=5b~10b and d=a are suitable. When the deflection angle θ is larger, the value of S can be smaller, and the value of d can be larger. At the same time, in order to ensure that the spoiler group can generate effective longitudinal vortex, the spacing S of the spoiler group is preferably less than or equal to 600mm.

As shown in the figure, the hot liquid is output from the hot liquid source, enters the hot liquid pipe 6 through the hot liquid connection channel, and flows into the hot liquid channel through the hot liquid through holes 7 distributed on the hot liquid pipe 6 . The hot liquid flowing into the hot liquid channel flows through the spoiler set on the hot liquid pipe 6, and the hot liquid will form six vortices at the spoiler set, and the two adjacent vortexes turn symmetrically, and the fluid flows at the junction in the same direction, so that The cooperative cooperation of each longitudinal eddy current effectively reduces the increase of flow resistance in the tube, and makes the hot liquid in a turbulent state in the hot liquid channel, which greatly enhances the heat transfer effect between the hot liquid and the tube wall 1 of the plate roller.

Example 2:

The difference between this embodiment 2 and embodiment 1 is that in this embodiment 2, as shown in the figure, the spoiler group is composed of 8 spoilers in a right triangle structure, and the 8 spoilers 8 are relatively hot. The central axis of the liquid pipeline 6 is distributed axisymmetrically and centrally symmetrically.

The above detailed description is a specific description of the feasible embodiment of the utility model, which is not intended to limit the patent scope of the utility model, and all equivalent implementations or changes that do not deviate from the utility model are included in the scope of this case within the scope of the patent.

Claims (6)

1. an augmentation of heat transfer type forging printing plate roller, comprises left chock plug, right chock plug and roller tube wall, is provided with cold sap cavity in roller tube wall, and cold sap cavity leads to supercooled liquid plugs into channel connection to cold liquid source; It is characterized in that: in described roller tube wall, be provided with several hydrothermal solution chambeies, being provided with the thermal liquid pipe for carrying hydrothermal solution in described hydrothermal solution chamber, between described thermal liquid pipe and hydrothermal solution chamber, being formed with fluid conduit; Described fluid conduit and thermal liquid pipe plug into channel connection to hydrothermal sources by hydrothermal solution; Be provided with several hydrothermal solution via holes along the described thermal liquid pipe of thermal liquid pipe circumference, described hydrothermal solution via hole communicates with thermal liquid pipe; Also be provided with several spoiler groups along on thermal liquid pipe axially described thermal liquid pipe, described spoiler group comprises the spoiler of the rectangular triangular structure of even number; The axis Central Symmetry of the relative thermal liquid pipe of spoiler of same spoiler group and axial symmetry distribution; The sharp-angled apex of the right-angle side b of the spoiler of same spoiler group to be positioned on same vertical plane and right-angle side a perpendicular to the axis of thermal liquid pipe, and form certain deviation angle θ between the right-angle side b of described spoiler and the axis of thermal liquid pipe; Spoiler group is axially connected to the outer surface of thermal liquid pipe along thermal liquid pipe with certain interval S.

2. augmentation of heat transfer type forging printing plate roller according to claim 1, is characterized in that: be provided with a dividing plate in the inner chamber of described roller tube wall; The inner chamber of roller tube wall is divided into the first not connected inner chamber and the second inner chamber by described dividing plate; Hydrothermal solution chamber is near the second inner chamber and away from the first inner chamber; Described second inner chamber is cold sap cavity, and cold sap cavity leads to supercooled liquid plugs into channel connection to cold liquid source.

3. augmentation of heat transfer type forging printing plate roller according to claim 2, is characterized in that: described dividing plate is curved shape, its bending hydrothermal solution chamber dorsad, inner side, and the bent angle alpha of the inner side of described dividing plate is between 30 ° ~ 160 °.

4. augmentation of heat transfer type forging printing plate roller according to claim 1, is characterized in that: form deviation angle θ <90 ° between the right-angle side b of described spoiler and the axis of described thermal liquid pipe.

5. augmentation of heat transfer type forging printing plate roller according to claim 1, is characterized in that: the length of described spoiler right-angle side a is less than the length of right-angle side b.

6. augmentation of heat transfer type forging printing plate roller according to claim 1, is characterized in that: the quantity forming the spoiler of same spoiler group is even number.