CN117621543A - Children lock zip fastener heat sealing device - Google Patents

Abstract

The invention discloses a heat sealing device for a child lock zipper, which is used for heat sealing a zipper and a plastic film, and comprises an upper ironing knife, a lower ironing knife and a zipper template, wherein the zipper template comprises a film supporting part and a heat sealing matching part, two heat sealing matching parts are oppositely arranged on the zipper template, and the thickness of the film supporting part is thicker than that of the heat sealing matching parts; the upper ironing knife and the lower ironing knife are respectively provided with two bosses, the bosses are matched with the heat-sealing matching parts, the parts, needing heat sealing, of the zipper and the plastic film are pressed and held on the heat-sealing matching parts, one of the four bosses is a cooling table, a cooling channel is formed in the cooling table and is isolated from other parts of the upper ironing knife or the lower ironing knife through a heat insulation layer, and cooling liquid flows through the cooling channel. The cooling table is abutted against the position of the zipper and the plastic film, which does not need heat sealing, so that wrinkles are prevented, and the functions of the cooling table and the boss are not interfered with each other due to the isolation of the heat insulation layer.

Description

Children lock zip fastener heat sealing device

Technical Field

The invention belongs to the field of plastic film processing equipment, and particularly relates to a heat sealing device for a zipper of a child lock.

Background

There is a child-resistant plastic closure zipper today, as shown in fig. 1, in which the hatched area represents the area where the zipper and the plastic bag have been heat sealed, and the zipper on one side has only the bottom heat sealed to the plastic bag, which makes it possible to open the zipper by pulling the plastic bag directly in this design, with the stress point being located at the a-site, which results in the zipper not being normally opened. If the zipper is required to be opened, the plastic bag opening (24) is required to be pinched by one hand, the tilting end (25) is required to be pinched by the other hand, and the zipper can be normally opened only by converting the stress point into the position B.

The special structure of the plastic sealing zipper with the child lock needs special treatment when the zipper and the plastic bag are subjected to heat sealing, and the common treatment mode is that the zipper with inconsistent heat sealing areas on the plastic bag is treated by two stations, wherein one side is subjected to normal heat sealing, and the other side is subjected to heat sealing, but two serious defects exist. First, because the zippers on both sides need to cooperate with each other in actual use to seal the plastic bag, the zippers on both sides need to be at the same level on the plastic bag, and the zippers on both sides cannot be accurately ensured to be at the same level by heat sealing at two stations. Secondly, when the zipper and the plastic bag are sealed under normal conditions, the upper part and the lower part of the zipper are required to be simultaneously propped against the heat seal by the ironing heads, and when the zipper only needing to be sealed at one side of the bottom is sealed, the finished product after the heat seal can generate the phenomenon of skin buckling due to uneven stress. The bottom of the zipper which is not used for heat sealing is also required to be propped against to eliminate wrinkles, as shown in a figure II, the bottom of the zipper is propped against by the heat insulation block, but the heat insulation block can generate heat under long-time work because the distance between the heat insulation block and the ironing head is short, so that the bottom of the zipper is adhered to the plastic bag.

Therefore, it is desirable to provide a child lock zipper heat sealing device that can simultaneously process both sides of the zipper, and can control the temperature of the portion that abuts against the portion of one side of the zipper that does not require heat sealing, and that does not affect the heat sealing temperature of the other portion of the slider.

Disclosure of Invention

The invention aims to provide a heat sealing device for a child lock zipper, which aims to solve the problem that two zippers which are not accurately sealed at two stations are located at the same height, and when the zippers on one side only needing to be sealed at the bottom are sealed, the finished product after heat sealing can generate the phenomenon of skin buckling due to uneven stress. The bottom of the zipper which is not required to be heat-sealed is also required to be propped against to eliminate wrinkles, as shown in a figure II, the bottom of the zipper is propped against by the heat insulation block, but under long-time working, the heat insulation block can generate heat to cause the bottom of the zipper to be adhered to the plastic bag due to the short distance between the heat insulation block and the ironing head.

In order to achieve the above purpose, the specific technical scheme of the invention is as follows:

the utility model provides a child lock zip fastener heat sealing device for with zip fastener and plastic film heat-seal, includes upper ironing knife, lower ironing knife and zip fastener template, the zip fastener template is installed upper ironing knife with lower ironing knife between, the zip fastener template includes film butt portion and heat-seal cooperation portion, the zip fastener mould with heat-seal cooperation portion is provided with two relatively, thereby the thickness of film butt portion is thicker than heat-seal cooperation portion forms the space that can hold the zip fastener;

the zipper is divided into an upper zipper and a lower zipper, the upper zipper is matched and clamped with the lower zipper, and the heat seal matching part is partially inserted between the upper zipper and the lower zipper to fork and hold the zipper;

the upper ironing knife and the lower ironing knife are respectively provided with two bosses, the bosses are matched with the heat sealing matching parts, the parts, needing heat sealing, of the zipper and the plastic film are pressed and held on the heat sealing matching parts, one of the bosses is a cooling table, a cooling channel is arranged inside the cooling table, the cooling table is isolated from other parts of the upper ironing knife or the lower ironing knife through a heat insulation layer, and cooling liquid flows through the cooling channel. Through such design, can carry out the heat-seal to last zip fastener and lower zip fastener and plastic film on a station, fix a position accurately, upward scald the sword and scald the boss except that the cooling platform down and be used for heat-seal zip fastener and plastic film, and the cooling platform is isolated with the heat of upward scalding sword or lower scald the sword through the insulating layer, cooling platform inside is provided with cooling channel again, constantly flow through the coolant liquid in the cooling channel, in time the insulating layer leads to thermal-insulated effect decline because of long-time use, the heat passes through the insulating layer and transmits the cooling platform, the coolant liquid also can be quick cool down the cooling platform, prevent the adhesion to appear in the position that zip fastener and plastic film do not need the heat-seal.

Further, the cooling table is arranged on the lower ironing knife, the first step surface, the second step surface and the third step surface are sequentially exposed on the same side of the cooling table, the heat insulation layer and the lower ironing knife, a plurality of inner hexagon fastening bolts are arranged on the second step surface, penetrate through the second step surface and are partially screwed into the first step surface, a plurality of inner hexagon fastening bolts are also arranged on the third step surface, and penetrate through the third step surface and are partially screwed into the second step surface. By such design, the first step surface is on the cooling table, the second step surface is on the heat insulating layer, and the third step surface is on the lower ironing knife. The heat insulation layer and the cooling table are fixed through the first step surface and the second step surface, and the lower ironing knife and the heat insulation layer are fixed through the second step surface and the third step surface, so that the cooling table and other parts of the lower ironing knife are not in direct contact with each other, high temperature on the lower ironing knife cannot be transmitted to the cooling table through any direct medium, and the cooling table is effectively prevented from being rapidly increased in temperature.

Further, the upper ironing knife and the lower ironing knife are respectively fixedly attached with an electric heating plate at one end far away from the zipper template. The electric heating plate is used as a heat source to heat the upper ironing knife and the lower ironing knife.

Furthermore, the upper ironing knife and the lower ironing knife are made of metal materials with good heat conduction performance except the heat insulation layer. Through the design, the electric heating plate is more efficient in heating the upper ironing knife and the lower ironing knife, and the temperature regulation and control of the upper ironing knife and the lower ironing knife are more sensitive.

Further, the heat insulation layer is made of glass fiber. By such a design, the glass fiber can minimize heat transfer due to its manufacturing mode.

Further, the film supporting part of the zipper template is provided with two paths of cooling holes, and cooling liquid is led into the cooling Kong Naliu. Film supports and holds portion and heat-seal fit portion integrated into one piece, to the film support the more important function of portion setting up the cooling hole to heat-seal fit, heat-seal fit portion is partly to insert between last zip fastener and the lower zip fastener, prevents to go up zip fastener and lower zip fastener and produce the adhesion at the in-process of heat-seal, but under long-time work, the heat of going up the sword of scalding and scalding down can transmit heat seal fit portion, if not cooling of heat seal fit portion, the high temperature of heat seal fit portion will damage the zip fastener and arouse the fold.

Furthermore, the cooling channel of the cooling table and the cooling hole of the zipper template are fixedly connected with anti-drop heads, the anti-drop heads are formed by sequentially arranging a plurality of conical tube heads, and the conical surfaces of the conical tube heads deviate from the cooling hole or the cooling channel. Through such design, anticreep head main function is in order to be connected cooling hole and cooling channel with the refrigeration plant of outside for the coolant liquid in cooling hole and the cooling channel can be continuous circulation, and the anticreep design of toper tube head can prevent that the pipeline from coming off after the cooperation of anticreep head is connected to very big degree.

Furthermore, one end of the electric heating plate, which is far away from the upper ironing knife or the lower ironing knife, is also provided with a heat insulation plate. The design of the heat insulating board is mainly used for preventing ineffective heat transfer, saving energy and playing a role in isolation and protection.

Further, along the feeding direction of the zipper and the plastic film, a cooling plate is arranged behind the upper ironing knife and the lower ironing knife and is used for cooling the plastic film and the zipper which are already heat-sealed. Through the design, the zipper and the plastic film are timely cooled after heat sealing is finished, so that the plastic film and the zipper are prevented from wrinkling.

Further, a pipe joint is arranged on the cooling plate and used for connecting a cooling path in the cooling plate with external refrigeration equipment, and the twice scalding path is used for ensuring the scalding completion degree of the plastic film and the zipper and preventing the plastic film and the zipper from falling off.

The beneficial effects of the invention are as follows: can carry out the heat-seal to last zip fastener and lower zip fastener and plastic film on a station, fix a position accurately, go up the boss that scalds the sword except that the cooling platform with lower and be used for heat-seal zip fastener and plastic film, and the cooling platform passes through the insulating layer and will go up the heat of scalding sword or scalding the sword down and keep apart, cooling platform inside is provided with the cooling hole again, constantly flow through the coolant liquid in the cooling hole, in time the insulating layer leads to thermal-insulated effect decline because of long-time use, the heat passes through the insulating layer and transmits the cooling platform, the coolant liquid also can be quick cools down the cooling platform, prevent that the adhesion from appearing in the position that zip fastener and plastic film do not need the heat-seal.

Drawings

FIG. 1 is a reference diagram for analyzing the stress of a zipper and a plastic bag in the background of the invention;

FIG. 2 is a reference diagram of the fitting structure of the ironing head and the heat insulation block in the background art of the invention;

FIG. 3 is a schematic diagram of the overall structure of the present invention;

FIG. 4 is an enlarged schematic view of a portion of FIG. 3A;

FIG. 5 is a schematic diagram of the front structure of the present invention;

FIG. 6 is an enlarged schematic view of a portion of the structure of FIG. 5B;

FIG. 7 is a schematic view of the structure of the lower ironing knife (cooling channel to prevent the head from falling off) and its accessory parts according to the present invention;

FIG. 8 is a schematic view of the structure of the zipper template of the present invention;

FIG. 9 is a schematic view of the structure of the anti-drop head of the present invention;

FIG. 10 is an enlarged schematic view of the portion of FIG. 7C;

the figure indicates: 1. a top ironing knife; 2. a lower ironing knife; 3. a zipper template; 4. a film supporting part; 5. a heat seal mating portion; 6. a zipper is arranged; 7. a lower zipper; 8. a plastic film; 9. a boss; 10. a cooling table; 11. a thermal insulation layer; 12. a cooling hole; 13. a first step surface; 14. a second level; 15. a third step surface; 16. a hexagon socket head tightening bolt; 17. an electric heating plate; 18. an anti-head release; 19. a conical tube head; 20. a cooling plate; 21. a pipe joint; 22. a heat insulating plate; 23. a cooling channel; 24. a plastic bag opening; 25. and (5) tilting the end.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

As shown in fig. 3 to 10:

example 1

A child lock zipper heat sealing device, which is used for heat sealing a zipper and a plastic film 8, and comprises an upper ironing knife 1, a lower ironing knife 2 and a zipper template 3, wherein the zipper template 3 is arranged between the upper ironing knife 1 and the lower ironing knife 2, the zipper template 3 comprises a film abutting part 4 and a heat sealing matching part 5, the two heat sealing matching parts 5 are oppositely arranged on the zipper template 3, and the thickness of the film abutting part 4 is thicker than the heat sealing matching part 5 so as to form a space capable of accommodating the zipper;

the zipper is divided into an upper zipper 6 and a lower zipper 7, the upper zipper 6 is matched and clamped with the lower zipper 7, and the heat seal matching part 5 is partially inserted between the upper zipper 6 and the lower zipper 7 to fork and hold the zipper;

the upper ironing knife 1 and the lower ironing knife 2 are respectively provided with two bosses 9, the bosses 9 are matched with the heat sealing matching parts 5, the parts, needing heat sealing, of the zipper and the plastic films 8 are pressed and held on the heat sealing matching parts 5, one of the bosses 9 of the upper ironing knife 1 or the lower ironing knife 2 is a cooling table 10, a cooling channel 23 is formed in the cooling table 10, the cooling table 10 is isolated from other parts of the upper ironing knife 1 or the lower ironing knife 2 through a heat insulation layer 11, and cooling liquid flows into the cooling channel 23.

The implementation manner of the embodiment is as follows: the plastic film 8 is arranged on the upper and lower parts of the film supporting part 4 respectively, the upper zipper 6 and the lower zipper 7 of the zipper are clamped together, the space formed by the height difference between the heat sealing matching part 5 and the film supporting part 4 is arranged in advance, the heat sealing matching part 5 is partially inserted between the upper zipper 6 and the lower zipper 7, the boss 9 of the upper ironing knife 1 and the lower ironing knife 2 except the cooling table 10 is used for heat sealing the zipper and the plastic film 8, the cooling table 10 isolates the heat of the upper ironing knife 1 or the lower ironing knife 2 through the heat insulation layer 11, the cooling table 10 is internally provided with the cooling hole 12, the cooling hole 12 is continuously filled with cooling liquid, the heat insulation effect is reduced due to the long-time use of the heat insulation layer 11, the heat is transferred to the cooling table 10 through the heat insulation layer 11, and the cooling liquid can also quickly cool the cooling table 10, so that the upper zipper 6, the lower zipper 7 and the plastic film 8 are originally heat-sealed, but one part is not heat-sealed by the cooling table 10, so that the child lock function in the background technology is realized.

Example 2

The cooling table 10 is arranged on the lower ironing knife 2, the cooling table 10, the heat insulation layer 11 and the lower ironing knife 2 are sequentially exposed on the same side to form a first step surface 13, a second step surface 14 and a third step surface 15, a plurality of inner hexagon fastening bolts 16 are arranged on the second step surface 14, the inner hexagon fastening bolts 16 penetrate through the second step surface 14 and are partially screwed into the first step surface 13, a plurality of inner hexagon fastening bolts 16 are also arranged on the third step surface 15, and the inner hexagon fastening bolts 16 penetrate through the third step surface 15 and are partially screwed into the second step surface 14.

The implementation manner of the embodiment is as follows: the first step 13 is on the cooling stage 10, the second step 14 is on the insulating layer 11, and the third step 15 is on the lower ironing knife 2. The heat insulation layer 11 and the cooling table 10 are fixed through the first step surface 13 and the second step surface 14, and the lower ironing knife 2 and the heat insulation layer 11 are fixed through the second step surface 14 and the third step surface 15, so that the cooling table 10 and other parts of the lower ironing knife 2 are not in direct contact, and therefore the high temperature on the lower ironing knife 2 cannot be transmitted to the cooling table 10 through any direct medium, and the rapid temperature rise of the cooling table 10 is effectively prevented.

Example 3

The upper ironing knife 1 and the lower ironing knife 2 are fixedly attached with an electric heating plate 17 at one end far away from the zipper template 3.

The upper ironing knife 1 and the lower ironing knife 2 except the heat insulation layer 11 are made of metal materials with good heat conduction performance.

The heat insulating layer 11 is made of glass fiber.

The film holding portion 4 of the zipper template 3 is provided with two cooling holes 12, and a cooling liquid is circulated in the cooling holes 12.

The implementation manner of the embodiment is as follows: the electric heating plate 17 generates heat and transmits to the ironing knife made of copper, so that the ironing knife can reach the temperature required by heat sealing, the cooling table 10 is separated from the heating part of the ironing knife by the heat insulation layer 11 made of glass fiber material, and the glass fiber has excellent heat insulation performance, so that the zipper contacted with the cooling table 10 and the plastic film 8 cannot be scalded to be adhered.

Film supports and holds portion 4 and heat-seal fit portion 5 integrated into one piece, and set up the cooling hole 12 more important function to film supports and hold portion 4 and be cooling to the heat-seal fit, and heat-seal fit portion 5 is partly to insert between upper zipper 6 and the lower zipper 7, prevents that upper zipper 6 and lower zipper 7 from producing the adhesion at the in-process of heat-seal, but under long-time work, the heat of upper ironing knife 1 and lower ironing knife 2 can transmit heat seal fit portion 5, if not cooling to heat-seal fit portion 5, the too high temperature of heat-seal fit portion 5 will damage the zip fastener.

Example 4

The cooling channel 23 of the cooling table 10 and the end part of the cooling hole 12 of the zipper template 3 are fixedly connected with an anti-drop head 18, the anti-drop head 18 is formed by sequentially arranging a plurality of conical tube heads 19, and the conical surface of the conical tube head 19 deviates from the cooling hole 12 or the cooling channel 23.

The electric heating plate 17 is also provided with a heat insulation plate 22 at one end far away from the upper ironing knife 1 or the lower ironing knife 2.

In this embodiment, the anti-falling head 18 is used for connecting the cooling hole 12 and the cooling channel 23 with external refrigeration equipment, and is usually connected by using a rubber tube, the rubber tube can be directly sleeved on the anti-falling head 18, the diameter of the cone bottom of the cone-shaped tube head 19 is larger, the deformation degree of the rubber tube at the position is large, and the generated pressure is also large, so that the rubber tube is not easy to fall off.

Example 5

Along the feeding direction of the zipper and the plastic film 8, a cooling plate 20 is arranged behind the upper ironing knife 1 and the lower ironing knife 2, and the cooling plate 20 is used for cooling the plastic film 8 and the zipper which are already heat-sealed.

It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The utility model provides a child lock zip fastener heat sealing device for with zip fastener and plastic film (8) heat-seal, its characterized in that includes upper ironing knife (1), lower ironing knife (2) and zip fastener template (3), zip fastener template (3) are installed upper ironing knife (1) with lower ironing knife (2), zip fastener template (3) include film butt portion (4) and heat seal cooperation portion (5), zip fastener template (3) are with heat seal cooperation portion (5) are provided with two relatively as the direction, the thickness of film butt portion (4) is thicker than heat seal cooperation portion (5) thereby forms the space that can hold the zip fastener;

the zipper is divided into an upper zipper (6) and a lower zipper (7), the upper zipper (6) is matched and clamped with the lower zipper (7), and the heat seal matching part (5) is partially inserted between the upper zipper (6) and the lower zipper (7) to fork and hold the zippers;

the utility model provides a hot knife (1) with lower hot knife (2) possess two boss (9) respectively, boss (9) with heat-seal cooperation portion (5) cooperation will need the part of heat-seal to hold between zip fastener with plastic film (8) on heat-seal cooperation portion (5), one of boss (9) of upper hot knife (1) or lower hot knife (2) is cooling platform (10), cooling channel (23) are offered to cooling platform (10) inside, cooling platform (10) are kept apart with other positions of upper hot knife (1) or lower hot knife (2) through insulating layer (11), cooling hole (12) are interior to lead to the coolant liquid.

2. The heat sealing device for the child lock zipper according to claim 1, wherein the cooling table (10) is arranged on the lower ironing knife (2), the cooling table (10), the heat insulation layer (11) and the lower ironing knife (2) are sequentially exposed on the same side to form a first step surface (13), a second step surface (14) and a third step surface (15), a plurality of inner hexagon fastening bolts (16) are arranged on the second step surface (14), the inner hexagon fastening bolts (16) penetrate through the second step surface (14) and are partially screwed into the first step surface (13), a plurality of inner hexagon fastening bolts (16) are also arranged on the third step surface (15), and the inner hexagon fastening bolts (16) penetrate through the third step surface (15) and are partially screwed into the second step surface (14).

3. The heat sealing device for the child lock slide fastener according to claim 1, wherein an electric heating plate (17) is fixedly attached to one end of each of the upper ironing knife (1) and the lower ironing knife (2) away from the slide fastener template (3).

4. The heat sealing device for the child lock slide fastener according to claim 1, wherein the upper ironing knife (1) and the lower ironing knife (2) are made of metal materials with good heat conduction performance except for the heat insulation layer (11).

5. The heat sealing device for a child lock slide fastener according to claim 1 or 2, wherein the heat insulating layer (11) is made of glass fiber.

6. The heat sealing device for the child lock slide fastener according to claim 1, wherein the film abutting portion (4) of the slide fastener template (3) is provided with two paths of cooling holes (12), and cooling liquid flows through the cooling holes (12).

7. The heat sealing device for the child lock slide fastener according to claim 1 or 6, wherein the cooling channel (23) of the cooling table (10) and the end part of the cooling hole (12) of the slide fastener template (3) are fixedly connected with an anti-falling head (18), the anti-falling head (18) is formed by sequentially arranging a plurality of conical tube heads (19), and the conical surface of the conical tube head (19) deviates from the cooling hole (12) or the cooling channel (23).

8. A child lock zipper heat-sealing device according to claim 3, wherein the end of the electric heating plate (17) far away from the upper ironing knife (1) or the lower ironing knife (2) is also provided with a heat-insulating plate (22).

9. The heat sealing device for the child lock slide fastener according to claim 1, wherein a cooling plate (20) is arranged behind the upper ironing knife (1) and the lower ironing knife (2) along the feeding direction of the slide fastener and the plastic film (8).

10. The child lock zipper heat-sealing device according to claim 9, wherein a pipe joint (21) is provided on the cooling plate (20), and the pipe joint (21) is used for connecting a cooling path in the cooling plate (20) with external refrigeration equipment.