CN211492556U

CN211492556U - Coated TPU composite material production equipment

Info

Publication number: CN211492556U
Application number: CN201922436776.9U
Authority: CN
Inventors: 刘亭; 梁金桓; 郑坤; 张树杰
Original assignee: Shandong Yuma Sun-Shading Technology Co ltd
Current assignee: Shandong Yuma Sun-Shading Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-15
Anticipated expiration: 2029-12-30

Abstract

The invention relates to a coated TPU composite material production device, which is characterized in that a double-side porous die is arranged, a molten TPU material is injected into a die cavity of the die, a wire penetrates through the die, the wire penetrates through the die cavity and is soaked in the molten TPU material, when the wire penetrates out, a layer of TPU material is uniformly coated on the surface of the penetrated wire under the limiting action of a wire outlet hole, and the TPU material is cooled and solidified to obtain the TPU composite wire. The obtained TPU composite wire can be directly woven into fabric, the fabric is used in a plurality of fields such as outdoor sunshade, building sunshade and clothing accessories, compared with an extruder coating process, production of the TPU composite material with multiple specifications by one machine is realized by improving production equipment, the equipment utilization rate and the production efficiency are improved, the production flexibility is greatly improved, and the problems of rough surface, coarse details and core deviation of the product are effectively solved by means of a unique bilateral porous die.

Description

Coated TPU composite material production equipment

Technical Field

The invention relates to the field of composite material production technology and equipment, in particular to coated TPU composite material production equipment.

Background

Tpu (thermoplastic polyurethanes) is a class of polymeric materials between rubbers and plastics, known as thermoplastic polyurethane elastomer rubbers. The traditional TPU composite material is compounded in a mode of bonding fabrics after molding, so that the research on the aspect of single-filament coating materials is less, and especially the research on the aspect of improving the preparation method and improving the productivity is less.

The invention patent with the patent number of 201410756873.5 and the name of TPU composite material and the preparation method thereof discloses a novel high-performance TPU composite material and the preparation method thereof, which adopts the principle of extruder coating, and the coating performance is improved to some extent by extruding the TPU material to coat the surface of a wire core, but the process form is single, and the production efficiency is low; meanwhile, the coating process is directly extruded and molded at the position of a machine head mouth mold of the extruder, the coating thickness is adjusted by adjusting the distance between the upper mouth mold and the lower mouth mold of the machine head, uniform coating is difficult to guarantee, and the problems of air holes, skin breakage, core deviation, rough surface and the like are easy to occur in the production process, so that the subsequent process of weaving density and aperture ratio is influenced.

Based on the above problems, the applicant of the present application has developed a set of dedicated production equipment for coated TPU composite materials.

Disclosure of Invention

The invention aims to solve the technical problem of providing coated TPU composite material production equipment which can improve the TPU coating capacity and can improve the phenomena of uneven coating and wire dragging of TPU.

In order to solve the technical problem, the production equipment of the coated TPU composite material comprises an injection molding machine, and is structurally characterized in that a double-side porous mold is arranged at an outlet of the injection molding machine; the double-side multi-hole die is provided with a material filling port connected with an outlet of an injection molding machine, the material filling port is communicated with the die cavity, two side die plates of the die are respectively and correspondingly provided with a plurality of groups of wire inlet holes and wire outlet holes, the wire inlet holes and the wire outlet holes are arranged in a one-to-one correspondence manner, the hole diameter of each wire inlet hole is matched with the outer diameter of each wire, and the hole diameter of each wire outlet hole is larger than that of.

One side of the double-side porous die is a wire inlet side, the other side of the double-side porous die is a wire outlet side, the wire inlet side is provided with a pay-off mechanism, the wire outlet side is provided with a take-up mechanism, and a cooling mechanism is arranged between the die and the take-up mechanism.

The pay-off mechanism comprises a bracket and a plurality of pay-off rollers; the wire take-up mechanism comprises a support and a plurality of wire take-up rollers, and the wire take-up rollers are driven to rotate by the power mechanism.

The cooling mechanism is of an air-cooled structure and comprises a box body with a front opening and a rear opening, an air inlet and an air outlet are formed in the box body, and a fan is arranged on the air inlet or the air outlet.

The cooling mechanism is of a water-cooled structure and comprises a door-shaped frame and a plurality of spray headers which are arranged on the door-shaped frame at intervals, and a water receiving tank is arranged at the bottom of the door-shaped frame.

The double-side porous die is of a groove type with an open top, a sealing cover with adjustable height is packaged on the open top of the die, and a pressure sensor is arranged in the die cavity.

The invention has the beneficial effects that: by arranging the bilateral porous die, the TPU material in a molten state is injected into a die cavity of the die, the wire penetrates through the die cavity and is soaked in the molten TPU material, when the wire penetrates out, under the limiting effect of the wire outlet hole, the surface of the penetrated wire is uniformly coated with a layer of TPU material, and the TPU composite wire is obtained after cooling and solidification. The obtained TPU composite wire can be directly woven into fabric, the fabric is used in a plurality of fields such as outdoor sunshade, building sunshade and clothing accessories, compared with an extruder coating process, production of the TPU composite material with multiple specifications by one machine is realized by improving production equipment, the equipment utilization rate and the production efficiency are improved, the production flexibility is greatly improved, and the problems of rough surface, coarse details and core deviation of the product are effectively solved by means of a unique bilateral porous die.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a schematic view showing the overall structure of a production apparatus of the present invention;

FIG. 2 is a schematic structural view of a double-sided porous mold according to the present invention;

FIG. 3 is an enlarged view of part A of FIG. 2;

FIG. 4 is an enlarged view of the portion B of FIG. 2;

fig. 5 is a schematic top view of fig. 2.

Detailed Description

Referring to the attached drawings, the production equipment of the coated TPU composite material comprises an injection molding machine 2, wherein a bilateral porous mold 3 is arranged at the outlet position of the injection molding machine 2; the double-side multi-hole die 3 is provided with a material filling port 33 connected with an outlet of an injection molding machine, the material filling port 33 is communicated with a die cavity 34, two side die plates of the die are respectively and correspondingly provided with a plurality of groups of wire inlet holes 31 and wire outlet holes 32, the wire inlet holes 31 and the wire outlet holes 32 are arranged in a one-to-one correspondence manner, the hole diameter of the wire inlet hole 31 is matched with the outer diameter of the wire 1, and the hole diameter of the wire outlet hole 32 is larger than that of the.

Referring to the attached drawings, on the two side templates, the wire inlet hole 31 and the wire outlet hole 32 of each group are coaxially arranged at the same water position to ensure that the wire 1 penetrates out from the center of the wire outlet hole 32, so that the surface of the wire can be uniformly coated with a TPU material, and the eccentric problem is avoided. Wherein, according to the type and diameter of the wire 1, the aperture of the wire inlet hole 31 is generally 0.05-0.5mm, and correspondingly, the aperture of the wire outlet hole 32 is 0.2-1.5 mm; the bottom of the coating die can be simultaneously provided with 1-10 groups of inlet and outlet holes with the same and/or different apertures, and preferably 4-8 groups. In addition, in order to facilitate the wire to pass in and out, as shown in the figure, the wire inlet and outlet holes both adopt a tapered hole structure.

Referring to the attached drawings, one side of the double-side porous die 3 is a wire inlet side, the other side of the double-side porous die is a wire outlet side, a wire releasing mechanism is arranged on the wire inlet side, a wire collecting mechanism is arranged on the wire outlet side, and a cooling mechanism is arranged between the die and the wire collecting mechanism.

Referring to the drawings, the pay-off mechanism includes a support and a plurality of pay-off rollers 4; the take-up mechanism comprises a support and a plurality of take-up rollers 5, and the take-up rollers 5 are driven to rotate by a power mechanism 6. The power mechanism 6 adopts a mode that the motor drives the roll shaft to rotate, provides traction force for the wire 1, and winds the formed and cooled TPU composite wire on the wire take-up roll 5.

For the cooling mechanism, water cooling or air cooling can be adopted. Fig. 1 shows an air-cooling structure, which includes a box 7 with front and rear openings, an air inlet and an air outlet are formed on the box 7, and a fan 71 is installed on the air inlet or the air outlet. The fan 71 is used for driving air to flow, so that the heat on the surface of the TPU composite wire is blown away in time, and the effect of rapid cooling is achieved. For the water-cooled structure, not shown in the drawing, the structure comprises a portal frame and a plurality of spray headers which are arranged on the portal frame at intervals, and a water receiving tank is arranged at the bottom of the portal frame. In the water-cooled structure, cooling water is sprayed to the surface of the TPU composite wire by means of a spray head, so that the heat on the surface of the wire is taken away, and the cooling effect is achieved.

Referring to the attached drawings, the double-side porous mold 3 is of a groove type with an open top, a sealing cover 35 with adjustable height is packaged on the open top of the mold, and a pressure sensor 8 is arranged in a mold cavity. The die cavity is internally provided with a closed space, the wire inlet hole is blocked by the wire to prevent the TPU material from leaking, the wire outlet hole is the only channel for extruding the TPU material, the cladding process of the TPU material on the wire 1 mainly occurs at the position of the wire outlet hole 32 of the die, a certain pressure is kept in the die cavity 34 to ensure a better cladding effect, and the problems of rough surface, foaming or uneven thickness can be effectively avoided. The pressure sensor 8 is used to detect the pressure in the die cavity 34 in real time, and when the pressure decreases, the height of the cover 35 is adjusted to increase the pressure in the cavity, thereby ensuring the coating effect. The pressure sensor can be directly connected with a display instrument, and the height of the sealing cover can be adjusted in real time by observing the pressure.

For the height adjusting structure of the sealing cover 35, as shown in the figure, the sealing cover 25 is slidably mounted at the top of the mold cavity 34, a sealing ring 10 is arranged at the peripheral end edge of the sealing cover 35 to ensure sealing with the cavity wall, the top end of the sealing cover 25 is connected with an operating rod 12 through a ball socket 11, the top end of the operating rod 12 is fixedly connected with a hand wheel 13, a support frame 14 is arranged at the upper part of the mold, the operating rod 12 is a threaded rod, and the operating rod 12 is rotatably connected to the support frame 14 through a threaded sleeve 15.

The invention provides a TPU composite wire, which is characterized in that a double-side porous die is arranged, a molten TPU material is injected into a die cavity of the die, a wire penetrates through the die, the wire penetrates through the die cavity and is immersed in the molten TPU material, when the wire penetrates out, a layer of TPU material is uniformly coated on the surface of the penetrated wire under the limiting action of a wire outlet hole, and the TPU material is cooled and solidified to obtain the TPU composite wire. The obtained TPU composite wire can be directly woven into fabric, the fabric is used in a plurality of fields such as outdoor sunshade, building sunshade and clothing accessories, compared with an extruder coating process, production of the TPU composite material with multiple specifications by one machine is realized by improving production equipment, the equipment utilization rate and the production efficiency are improved, the production flexibility is greatly improved, and the problems of rough surface, coarse details and core deviation of the product are effectively solved by means of a unique bilateral porous die.

There are several points to be addressed for the process and apparatus of the present invention. The wire rods in the process are silk threads and cotton threads, and the silk threads or the cotton threads are industrial strong threads and can resist high temperature. The temperature in the mold cavity was typically set at 205-215 ℃. The temperature in the mold cavity 34 also affects the coating effect, so that an insulating layer needs to be arranged on the periphery of the mold, and the temperature sensor 9 is arranged in the mold cavity 34 and used for detecting the temperature in the mold cavity in real time. Not shown in the drawings, in order to maintain the temperature in the mold cavity, a heating device may be further disposed at the bottom of the mold cavity 34, and specifically, an electromagnetic heating plate and the like may be used, which will not be described herein again.

The equipment is introduced only by taking the TPU composite material as an example, and the composite material is not limited to the TPU material and is also suitable for producing other coated wires such as TPV and the like.

In summary, the present invention is not limited to the above-described embodiments. The person skilled in the art can make several changes or modifications without departing from the technical solution of the present invention, and the changes or modifications all fall into the protection scope of the present invention.

Claims

1. A production device of a coated TPU composite material comprises an injection molding machine (2) and is characterized in that a bilateral porous mold (3) is arranged at an outlet of the injection molding machine (2); a material filling port (33) connected with an outlet of an injection molding machine is formed in the double-side porous mold (3), the material filling port (33) is communicated with a mold cavity (34), a plurality of groups of wire inlet holes (31) and wire outlet holes (32) are correspondingly formed in two side mold plates of the mold respectively, the wire inlet holes (31) and the wire outlet holes (32) are arranged in a one-to-one correspondence mode, the hole diameter of the wire inlet hole (31) is matched with the outer diameter of a wire (1), and the hole diameter of the wire outlet hole (32) is larger than the wire inlet hole (31).

2. The production equipment of the coated TPU composite material as set forth in claim 1, wherein one side of the double-sided porous mold (3) is a wire inlet side and the other side is a wire outlet side, the wire inlet side is provided with a wire releasing mechanism, the wire outlet side is provided with a wire rewinding mechanism, and a cooling mechanism is arranged between the mold and the wire rewinding mechanism.

3. The coated TPU composite production apparatus as set forth in claim 2, characterized in that said payout mechanism includes a carriage and a plurality of payout rollers (4); the wire take-up mechanism comprises a support and a plurality of wire take-up rollers (5), and the wire take-up rollers (5) are driven to rotate by a power mechanism (6).

4. The production equipment of the coated TPU composite material as set forth in claim 2, characterized in that the cooling mechanism is of an air-cooled structure and comprises a box body (7) with a front opening and a rear opening, the box body (7) is provided with an air inlet and an air outlet, and the air inlet or the air outlet is provided with a fan (71).

5. The production equipment of the coated TPU composite material as set forth in claim 2, wherein the cooling mechanism is of a water-cooled type structure and comprises a gate frame and a plurality of spray headers which are arranged on the gate frame at intervals, and a water receiving tank is arranged at the bottom of the gate frame.

6. The coated TPU composite production equipment as set forth in claim 2, characterized in that said two-sided cellular mold (3) is open-topped channel-type, with a height adjustable cover (35) enclosed over the open top of the mold, and with a pressure sensor (8) disposed within the mold cavity.