CN105667057B - A foam-type reinforced film production device and its production process - Google Patents

Abstract

The invention discloses a device and a process for producing a foaming type reinforcing rubber sheet, and belongs to the field of processing equipment of automobile reinforcing rubber sheets. The invention comprises a reinforced film extruder, an isolation paper roll frame, a cloth frame, a conveying belt, a cutting device and an extrusion roller, wherein: the reinforced film extruder, the conveyor belt and the cutting device are arranged in sequence according to the working procedures, and the isolation paper roll frame and the cloth frame are respectively fixed above and below the conveyor belt; the isolation paper roll frame and the cloth frame respectively pull out isolation paper and cloth, and the isolation paper, the foamed reinforcing film extruded by the reinforcing film extruder and the cloth form an upper layer, a middle layer and a lower layer to form a three-layer composite sheet and move forwards on the conveying belt; the extrusion roller is of an upper and lower double-roller structure, the distance between the extrusion roller and the initial end of the conveying belt is 50-80 cm, and the three layers of composite sheets pass through the extrusion roller and then move forwards on the conveying belt. The invention realizes the purpose of greatly reducing the thickness of the produced reinforced rubber sheet on the premise of ensuring the strength, and the problem of adhesion can not occur in the storage and transportation processes.

Description

A foam-type reinforced film production device and its production process

technical field

The invention relates to the field of processing equipment for automotive reinforcing films, in particular to a production device for foaming reinforcing films and a production process thereof.

Background technique

With the rapid development of the automobile industry, consumers have higher and higher requirements for the comprehensive performance of automobiles, especially performance and appearance. Major automobile manufacturers are competing to produce and develop automobiles with light weight and high fuel efficiency. Therefore, the thickness control of the body steel plate is becoming more and more strict. During the body forming process, the automobile steel plate becomes weaker due to stamping and stretching. During use, weak points such as door corners, handles and other parts are often opened and closed and subjected to stress such as repeated tension, impact and vibration, which will cause fatigue of the metal plate at the place. These parts are cracked. Therefore, these parts of the car need to be pasted with reinforcing film to improve the fatigue tear strength, bending strength and rigidity of the steel plate, and absorb the impact energy through its own deformation during collision, improve the crashworthiness of the car body, and effectively improve the safety performance of the car body index. However, the reinforced films currently on the market have complicated storage conditions and unstable performance. Therefore, stable foamed reinforced films have emerged as the times require.

With the continuous development of society, more and more attention is paid to environmental protection and energy saving. The development of modern automobiles has tended to be lightweight, comfortable and environmentally friendly. One of the best ways to save energy and reduce pollution is to reduce the weight of the car body by reducing the thickness of the car body steel plate, making the outer plate thinner, and hollowing out the structural parts. However, the thickness of the existing foamed reinforcing film is relatively large, and the direction of thinning the outer panel of the automobile is opposite. Therefore, how to reduce the thickness of the reinforcing film without reducing the strength is the general trend.

After retrieval, Chinese Patent Publication No. CN 105385367A, publication date 2016.03.09, name of invention: a reinforcing film, which is prepared from the following components in parts by mass: 40-65 parts of epoxy resin, 10-65 parts of nitrile rubber 15 parts, styrene-butadiene rubber 2-6 parts, curing agent 3-8 parts, tackifier 1-5 parts, organic pigment 1-5 parts, peroxide 1-5 parts, filler 5-15 parts, foaming agent 1-2 parts, 5-10 parts of thixotropic agent. The invention can improve the overall rigidity of the vehicle body, reduce the noise and resonance generated during the running of the vehicle, enhance the sealing performance of the vehicle, facilitate storage, and have stable performance. But the reinforcing film produced by this proportion is difficult to reach below the thickness of 2mm with existing device production.

Contents of the invention

1. The technical problem to be solved by the invention

In order to overcome the problem of relatively thick reinforcing film in the prior art, the present invention provides a foaming reinforcing film production device and a production process thereof. The invention achieves the purpose of greatly reducing the thickness of the produced reinforcing film under the premise of ensuring the strength, and the problem of the reinforcing film sticking will not occur during transportation. 2. Technical solution

In order to solve the above problems, the present invention adopts the following technical solutions:

A foamed reinforced film production device, including a reinforced film extruder, a release paper roll frame, a cloth rack, a conveyor belt, and a cutting device, and also includes a squeeze roller, wherein: the reinforced film extruder, the conveyor belt The release paper roll frame and the fabric frame are respectively fixed above and below the conveyor belt; the release paper roll frame and the cloth frame pull out the release paper and cloth respectively, and the release paper and reinforcing film extruder The extruded foam-type reinforcing film and fabric form three layers of upper, middle and lower layers to form a three-layer composite sheet and move forward on the conveyor belt; the extrusion roller is a structure of upper and lower double rollers, and the distance from the beginning of the conveyor belt is 50-80cm. , the three-layer composite sheet passes through the extrusion roller and then moves forward on the conveyor belt.

In a further solution, the reinforced film extruder includes a discharge port, a heating mechanism and a rubber material extrusion mechanism; the rubber material extrusion mechanism extrudes the rubber material to the heating mechanism to be heated until softened and then extruded through the discharge port. In the form of soft flakes.

In a further solution, the reinforced film extruder further includes a film thickness adjustment mechanism and a film width adjustment mechanism arranged at the front end of the heating mechanism; the cloth is glass fiber cloth.

In a further solution, the cutting device is cylinder-type cutting, and the three-layer composite sheet is cut by controlling the cutter through the cylinder.

In a further solution, three pairs of extrusion rollers are arranged side by side in parallel, and the three-layer composite sheet is rolled three times, and the foamed reinforcing film in the middle is rolled to a thickness of less than 2 mm.

In a further solution, an extrusion adjustment mechanism is fixed at both ends of the extrusion roller.

In a further solution, an induction mechanism is provided before the cutting device, and the three-layer composite sheet passes through the induction mechanism.

In a further solution, air suction holes are evenly distributed on the conveyor belt; the rubber material extruding mechanism is a barrel-shaped screw extruding mechanism.

In a further solution, the diameter of the suction hole is 1-2mm, the distance is 20-30mm, and it communicates with the negative pressure device.

A production process for a foamed reinforced film, characterized in that the steps are:

A. Fill the rubber material into the feed port of the reinforced film extruder, and the barrel-shaped screw extrusion mechanism will squeeze the rubber material to the heating mechanism;

B. After the rubber material is softened by the heating mechanism, under the continuous extrusion of the screw rod, the material is discharged through the discharge port into a soft sheet-like foaming reinforcing film;

At the same time as steps C and A, after pulling out the release paper and cloth from the release paper roll holder and cloth holder respectively, the release paper and cloth are layered up and down on the conveyor belt, and the conveyor belt is started;

D. Place the soft foam-type reinforcing film between the release paper and the cloth to form a three-layer composite sheet and pass through the extrusion roller;

F. After being crushed by the extrusion roller, start the negative pressure mechanism, and the three-layer composite sheet is adsorbed on the conveyor belt by the suction hole and moves forward with it;

G. At the end of the conveyor belt, after being cut by the cutting device, it is stacked and packaged.

3. Beneficial effect

Compared with the prior art, the present invention has the following significant advantages:

(1) In the production device of the foamed reinforced film of the present invention, the extrusion roller plays the role of rolling and compacting the foamed reinforced film, further thinning and compacting it, and under the premise of ensuring its strength, the The thickness of the foam-type reinforcing film is reduced, and a distance of 50-80 cm is reserved at the beginning of the conveyor belt to cool the softened film just out of the extruder. After cooling, this distance is just suitable for the rolling of the extrusion roller. ; The release paper and cloth protect the foamed reinforcing film, and the striped adhesive strips on the release paper also separate the reinforcing film to prevent them from sticking to each other. The gap between the gaps and the slits formed between the reinforcing films can also ensure that the reinforcing films can easily remove the release paper during use;

(2) The foamed reinforcing film production device of the present invention, the cooperation of the heating mechanism and the extrusion mechanism can stably extrude the soft sheet-like reinforcing film, which is convenient for the subsequent thinning process;

(3) The foamed reinforced film production device of the present invention, the thickness adjustment mechanism and the film width adjustment mechanism can easily adjust the thickness and width of the soft sheet-shaped reinforced film, and the convenience of improving the versatility of the device; the cloth is Glass fiber cloth, easy to disassemble, breathable, low cost;

(4) The foamed reinforced film production device of the present invention is cylinder-type cutting, easy to operate, easy to control the frequency, and high cutting precision;

(5) In the foamed reinforced film production device of the present invention, there are three pairs of squeeze rollers, and the three-layer composite sheet is rolled three times to ensure the uniformity of rolling, and the control of the thickness of the reinforced film is more accurate, which can Adjust the thickness of the reinforcing film according to the needs, and even control it to less than 1mm, which ensures the thinning of the outer panel of the car;

(6) The production device of the foamed reinforced film of the present invention, the setting of the extrusion adjustment mechanism further strengthens the control of the thickness of the reinforced film;

(7) The foamed reinforcing film production device of the present invention, the setting of the sensing mechanism, can control the unqualified reinforcing film to enter the cutting device, and cooperate with various adjustment devices to make the production smoother and ensure the product quality;

(8) In the production device of the foamed reinforced film of the present invention, the suction hole has the function of adsorption, and has an unexpected double effect of cooling the reinforced film;

(9) In the foamed reinforced film production device of the present invention, the diameter of the suction hole is 1-2 mm, and the spacing is 20-30 mm, which is obtained by the inventor through repeated tests and summarization according to the cooling effect, and is helpful for reducing the thickness of the reinforced film play a further role in promoting.

(10) In the release paper gluing method of the present invention, the foamed reinforcing film produced can be about 1 mm in size, and has no adhesion and high strength.

Description of drawings

Fig. 1 is the structural schematic diagram of the front section of the foamed reinforced film production device of the present invention, that is, the reinforced film extruder;

Fig. 2 is a schematic diagram of the middle section of the foamed reinforced film production device of the present invention;

Fig. 3 is a schematic diagram of the rear stage structure of the foamed reinforced film production device of the present invention.

In the figure: 1. Reinforced film extruder; 2. Foamed reinforced film; 3. Release paper roll holder; 4. Fabric rack; 5. Squeeze roller; 6. Conveyor belt; 8. Cutting device; 9. Three-layer composite film; 10. Induction mechanism; 11. Discharge port; 12. Heating mechanism; 13. Film thickness adjustment mechanism; 14. Film width adjustment mechanism; 15. Rubber extrusion mechanism; 31. Release paper; 41. Cloth; 51. Squeeze adjustment mechanism; 61. Air suction hole; 81. Cutter.

Detailed ways

In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

Example 1

A foamed reinforced film production device in this embodiment, as shown in Figure 2, includes a reinforced film extruder 1, a release paper roll frame 3, a cloth frame 4, a conveyor belt 6 and a cutting device 8, and also includes an extruder Pressure roller 5, wherein: reinforced film extruder 1, conveyor belt 6 and cutting device 8 are arranged in sequence according to the process, release paper roll frame 3 and fabric frame 4 are respectively fixed above and below the conveyor belt 6; release paper roll frame 3 and The cloth rack 4 pulls out the release paper 31 and the cloth 41 respectively, the release paper 31, the foamed reinforcing film 2 extruded by the reinforcing film extruder 1, and the cloth 41 form three layers of upper, middle and lower layers to form a three-layer composite sheet 9. Moving forward on the conveyor belt 6, there is a striped rubber strip on the side where the release paper 31 and the foamed reinforcing film 2 are in close contact; The composite sheet 9 moves forward on the conveyor belt 6 after passing through the extrusion roller 5 .

In the production device of a foamed reinforcing film in this embodiment, the extrusion roller 5 plays a role in rolling the foamed reinforcing film 2, further thinning and compacting it, and under the premise of ensuring its strength , greatly reducing the thickness of the foam-type reinforcing film 2, the distance of 50cm is reserved at the beginning of the conveyor belt, which plays the role of cooling the softened film just out of the extruder, and is convenient for the rolling of the extrusion roller 5; release paper 31 and The cloth 41 protects the foamed reinforcing film 2, and the striped adhesive strips on the release paper 31 also function to separate the reinforcing films to prevent them from sticking to each other. Moreover, the gap between the striped adhesive strips The slit formed between the gap and the reinforcing film can also ensure that the reinforcing film can easily remove the release paper during use.

Example 2

A foamed reinforced film production device in this embodiment has the same basic structure as that in Embodiment 1, and the improvement is that the reinforced film extruder 1 includes a discharge port 11, a heating mechanism 12, and a rubber material extruding mechanism 15 , also includes a film thickness adjustment mechanism 13 and a film width adjustment mechanism 14 arranged at the front end of the heating mechanism 12; the rubber extruding mechanism 15 is a barrel-shaped screw extruding mechanism. The cloth 41 is glass fiber cloth; the cutting device 8 is a cylinder type cutting, and the three-layer composite sheet 9 is cut by controlling the cutter 81 through the cylinder. Suction holes 61 are evenly distributed on the conveyor belt 6 . The squeeze roller 5 has a distance of 80 cm from the beginning of the conveyor belt.

A production process of a foamed reinforced film production device in this embodiment to produce foamed reinforced film, the steps are:

A. Fill the rubber material into the feeding port 1 of the reinforced film extruder, and the barrel-shaped screw extrusion mechanism squeezes the rubber material to the heating mechanism 12;

B. After the rubber is softened by the heating mechanism 12, under the continuous extrusion of the screw rod, the material is discharged through the discharge port 11 in a soft sheet-like foaming type reinforcing film 2; the cooperation between the heating mechanism 12 and the extrusion mechanism can Stable extruded soft sheet-like reinforcing film, which is convenient for subsequent thinning treatment;

At the same time of C and A steps, after the release paper 31 and the cloth 41 are pulled out from the release paper roll holder 3 and the cloth holder 4 respectively, the release paper 31 and the cloth 41 are layered up and down on the conveyor belt 6, and the conveyor belt 6 is started;

D. Place the soft foam-type reinforcing film 2 between the release paper 31 and the cloth 41 to form a three-layer composite sheet 9 and pass through the extrusion roller 5;

F. After being rolled by the extrusion roller 5, start the negative pressure mechanism, and the three-layer composite sheet 9 is adsorbed on the conveyor belt 6 by the suction hole 61 and moves forward with it;

G. At the end of the conveyor belt 6, it is cut by the cutting device 8 and then stacked and packaged.

A method for gluing release paper in this embodiment, the thickness adjustment mechanism 13 and the film width adjustment mechanism 14 can easily adjust the thickness and width of the soft sheet-like reinforcing film, and improve the versatility and convenience of the device; the cloth 41 is Fiberglass cloth is easy to disassemble, breathable, and low in cost; the suction holes 61 play the role of adsorption, and have an unexpected dual effect of cooling and reinforcing the film.

Example 3

The basic structure of the foamed reinforced film production device of this embodiment is the same as that of Embodiment 2, and the improvement is that three pairs of extrusion rollers 5 are arranged side by side and parallel to each other, and the three-layer composite sheet 9 is rolled three times. , and roll the foam-type reinforcing film 2 in the middle to a thickness of 1mm. Both ends of the extrusion roller 5 are fixed with an extrusion adjustment mechanism 51; the diameter of the suction hole 61 is 1mm, the distance is 20mm, and it communicates with the negative pressure device. The squeeze roller 5 has a distance of 70 cm from the beginning of the conveyor belt.

When a kind of foamed reinforced film production device of this embodiment is used specifically, there are three pairs of squeeze rollers 5, and the three-layer composite sheet 9 is rolled three times, which ensures the uniformity of rolling and reduces the thickness of the reinforced film. The control is more precise, and the extrusion adjustment mechanism 51 can adjust the thickness of the reinforcing film as required, and even control it to less than 1mm, which ensures the thinning of the outer panel of the automobile. Squeeze roller 5 has the distance of 70cm from the beginning of conveyor belt and the synergy of three pairs of squeeze rollers 5 produces the foamed reinforcing film with a thickness of 1mm, and the strength becomes larger; it has played an unexpected technical effect.

Example 4

The basic structure of the foamed reinforced film production device of this embodiment is the same as that of Embodiment 3, and the improvement is that an induction mechanism 10 is provided before the cutting device 8, and the three-layer composite sheet 9 passes through the induction mechanism 10. The suction holes 61 have a diameter of 2mm and a distance of 30mm. The setting of the induction mechanism 10 can control the unqualified reinforcing film to enter the cutting device 8, cooperate with various adjustment devices, make the production more smooth and ensure the product quality.

The above schematically describes the present invention and its implementation, which is not restrictive, and what is shown in the drawings is only one of the implementations of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a structural mode and embodiment similar to the technical solution, it shall all belong to the protection scope of the present invention .

Claims (6)

1. a kind of expansion type reinforced rubber sheet process units, including extrusion of stiffener film machine（1）, release paper frame（3）, cloth bracket （4）, conveyer belt（6）And cutting device（8）, which is characterized in that further include compression roller（5）, wherein：

The extrusion of stiffener film machine（1）, conveyer belt（6）And cutting device（8）It is arranged in order by process, release paper frame（3） And cloth bracket（4）It is individually fixed in conveyer belt（6）Above and below；Release paper frame（3）And cloth bracket（4）Pull out respectively every From paper（31）And cloth（41）, the barrier paper（31）, extrusion of stiffener film machine（1）The expansion type reinforced rubber sheet of extrusion（2）, cloth Material（41）In upper, middle and lower-ranking three layers of formation, three layers of composite sheet（9）In conveyer belt（6）Upper forward movement；

The compression roller（5）For upper and lower double roller structure, from conveyer belt（6）The distance of 50~80cm of beginning, three layers of composite sheet（9）It wears Cross compression roller（5）Afterwards again in conveyer belt（6）Upper forward movement；

The conveyer belt（6）On be evenly distributed with suction hole（61）；

The suction hole（61）A diameter of 1~2mm, spacing are that 20~30mm and negative pressure device communicate；

The barrier paper（31）With expansion type reinforced rubber sheet（2）What is be in close contact has striated adhesive tape on one side；

The extrusion of stiffener film machine（1）Including discharge port（11）, heating arrangements（12）With extruding apparatus for rubber material structure（15）；The glue Expect extrusion mechanism（15）Sizing material is extruded onto heating arrangements（12）Pass through discharge port again after being heated to softening（11）It squeezes out in film shape Expansion type reinforced rubber sheet（2）；

The compression roller（5）Three couple of side by side parallel setting is provided with, to three layers of composite sheet（9）It is rolled three times, and by Between expansion type reinforced rubber sheet（2）It is rolled by the thickness of 1mm.

A kind of 2. expansion type reinforced rubber sheet process units as described in claim 1, which is characterized in that the extrusion of stiffener film Machine（1）It further includes and is arranged on heating arrangements（12）The film stock thickness regulating mechanism of front end（13）With film width regulating mechanism （14）；The cloth（41）For glass-fiber-fabric.

A kind of 3. expansion type reinforced rubber sheet process units as described in claim 1, which is characterized in that the cutting device（8） For air-cylinder type severing, cut-off knife is controlled by cylinder（81）Three layers of composite sheet of severing（9）.

A kind of 4. expansion type reinforced rubber sheet process units as claimed in claim 2, which is characterized in that the compression roller（5）Two End is fixed with squeeze adjustments mechanism（51）.

5. a kind of expansion type reinforced rubber sheet process units as claimed in claim 4, which is characterized in that in cutting device（8）Before It is additionally provided with induction mechanism（10）, three layers of composite sheet（9）Across induction mechanism（10）.

A kind of 6. expansion type reinforced rubber sheet process units as claimed in claim 4, which is characterized in that the extruding apparatus for rubber material structure （15）For tubbiness spiral squeezing mechanism.