Die head structure, extruder equipment and method for multi-point coating enhanced production process

Abstract

The present invention relates to a die structure, extruder equipment and method for a multi-point coating type reinforced production process. The die structure includes a glass fiber guide for glass fiber to pass through, the glass fiber guide is inserted into a resin liquid guide die, the glass fiber guide is inserted from one end of the resin liquid guide die, and the other end of the resin liquid guide die inserted into the glass fiber guide is inserted into the resin die. The portion of the resin liquid guide die inserted into the resin die is conical, and the outer wall of the resin liquid guide die is provided with a molten resin flow groove, which extends to the conical portion. The molten resin flow groove allows the molten resin flowing into the molten resin flow groove to flow directly to the conical portion. When the glass fiber passes through the glass fiber guide, the molten resin is coated on the surface of the glass fiber from the conical portion. The molten resin is evenly coated on the surface of the glass fiber through the gap, thereby forming reinforced glass fiber, which has a better effect. Multiple groups of die structures are set to work simultaneously, and each group does not affect each other, thereby improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the field of material processing, and in particular to a die head structure, extruder equipment and method for a multi-point coating type enhanced production process. Background Art

[0002] Long glass fiber reinforced thermoplastic (LGFRT) is a lightweight, high-strength composite material with better mechanical properties and temperature resistance than short fiber reinforced thermoplastic (SGFRT), allowing it to better utilize the glass fiber reinforcement. This composite material is primarily used in applications requiring higher performance than SGFRT and is now widely used in sectors and industries such as the automotive industry, machinery manufacturing, electronics and electrical appliances, chemical and environmental protection, aerospace communications, and construction. It is particularly widely used in automotive parts, with products typically including bumpers, fenders, engine hoods, instrument panels, doors, seat backs, and heater impellers. While there is considerable research and application of SGFRT in China, there is relatively little research on LGFRT, resulting in deficiencies in the impregnation methods and efficiency of LFGRT. However, from an application perspective, LGFRT offers broader development prospects.

[0003] At present, the main production of LGFRT adopts the impregnation process, and the commonly used methods are melt impregnation, solution impregnation, powder impregnation and mixed yarn impregnation, but they all have shortcomings. In practical applications, the best process should be selected according to the application field. The impregnation method usually utilizes the melt-remelting characteristics of thermoplastic resin to impregnate the glass fiber with resin through a melt impregnation resin tank. However, it is difficult to control the glass fiber pulling speed and the uniformity of the glass fiber in the resin. The resin uniformity of the processed glass fiber surface is limited, and the impregnation method cannot solve the uneven resin material caused by the different melt indexes of the resin material, which leads to unstable product quality and cannot meet industrial requirements. Therefore, it is necessary to provide a processing method that can evenly coat the surface of the glass fiber with a material and meet industrial requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the traditional impregnation method is difficult to control the pulling speed and uniformity of the molten resin on the glass fiber surface. In view of the above-mentioned shortcomings of the existing technology, a die head structure, extruder equipment and method for a multi-point coating reinforcement production process are provided.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A die structure for a multi-point coating reinforcement production process is constructed, wherein the die structure includes a glass fiber guide for glass fiber to pass through, the glass fiber guide is inserted into a resin liquid guide die, the glass fiber guide is inserted from one end of the resin liquid guide die, and the other end of the resin liquid guide die inserted into the glass fiber guide is inserted into the resin die, the resin liquid guide die is inserted into the resin die in a conical shape, and the outer wall of the resin liquid guide die is provided with a molten resin flow groove, which extends to the conical part. The molten resin flow groove allows the molten resin flowing into the molten resin flow groove to flow directly to the conical part. When the glass fiber passes through the glass fiber guide, the molten resin is coated on the surface of the glass fiber from the conical part.

[0007] Preferably, the molten resin flow channel includes a molten resin flow channel inlet and a first molten resin flow channel branched in a Y shape from the inlet, and the first molten resin flow channel is evenly arranged on the outer surface of the resin liquid guide die head.

[0008] Preferably, the first molten resin flow groove forms a second molten resin flow groove with a Y-shaped branch, the end of the second molten resin flow groove extends to the tapered portion of the resin liquid guide die head, the second molten resin flow groove is evenly arranged on the outer surface of the resin liquid guide die head, and the depth of the molten resin flow groove is 2 mm.

[0009] Preferably, one end of the glass fiber guide is conical, which is inserted into the liquid guide die head and passes through the conical part of the resin liquid guide die head. The inner wall of the resin die head is conical, and a gap is formed between it and the conical part of the glass fiber guide and the conical part of the resin liquid guide die head. The molten resin flows into the glass fiber outlet from the gap and covers the glass fiber surface.

[0010] Preferably, the glass fiber enters the waxing machine die head for waxing before entering the extruder die head. The waxing machine die head adopts the above-mentioned die head structure, and the waxing machine die head and the extruder die head are coaxially arranged.

[0011] An extruder device for a multi-point coating reinforcement production process is constructed, wherein the device includes a resin liquid guiding die head for introducing molten resin, the resin liquid guiding die head is provided with a resin liquid guiding channel, molten resin flows into the resin liquid guiding channel from the outside, the lower end of the resin liquid guiding die head is connected to an extruder, the resin liquid guiding die head is provided with a resin liquid guiding channel for pouring molten resin into the extruder, the extruder includes a resin coating die head, the extruder die head structure such as the above-mentioned is inserted into the resin coating die head, when the glass fiber passes through the extruder die head structure, the molten resin flows into the extruder from the molten resin guide channel and is coated on the surface of the glass fiber on the extruder.

[0012] Preferably, a resin valve is provided on the resin liquid guide channel, which controls the flow of molten resin in the resin liquid guide channel. The extruder is also provided with a sensor for sensing the opening and closing size of the resin valve. When the sensor receives the adjustment information of the resin valve, it adjusts the delivery rate of the glass fiber and molten resin at the same time.

[0013] Preferably, a waxing machine is also connected to the side of the extruder. Before the glass fiber passes through the extruder, the wax liquid is coated on the surface of the glass fiber by the waxing machine. The wax liquid is transported to the waxing machine through the wax liquid delivery channel. A waxing machine die head is inserted into the waxing machine, and the waxing machine die head has the same structure as the extruder die head.

[0014] Preferably, the extruder equipment is provided with multiple groups of resin liquid guiding channels, and each group of resin liquid guiding channels corresponds to a group of resin valves, extruder die heads and waxing machine die heads. The end of the resin liquid guiding die head is provided with a resin liquid guiding die head end cover for sealing the resin liquid guiding channel. The part of the resin liquid guiding die head end cover inserted into the resin liquid guiding channel is provided with an end cover curved surface, and a certain distance is left between the lower end of the end cover curved surface and the terminal resin liquid guiding channel, thereby converting the axial pressure of the molten resin into radial pressure. At least one heating rod is also inserted into the resin liquid guiding die head and the extruder, and the heating rod keeps the molten resin in liquid state.

[0015] A method for constructing a multi-point coating type reinforcement production process includes the steps of allowing molten resin to pass through a die structure and be coated on the surface of glass fiber to form reinforced glass fiber.

[0016] The present invention has the beneficial effects of providing molten resin flow grooves on the surface of the resin liquid guide die, allowing molten resin to be transported into the molten resin flow grooves and flow into the glass fiber outlet through the gap between the tapered portion of the liquid guide die and the tapered portion of the glass fiber guide and the tapered portion accommodating cavity. When the glass fiber begins to be transported, the glass fiber outlet is coated on the glass fiber surface to form a reinforced glass fiber. To achieve a better coating effect, the molten resin flow grooves are evenly arranged on the surface of the resin liquid guide die, thereby ensuring a more uniform flow of molten resin when entering the tapered portion of the liquid guide die. To ensure a better bonding between the glass fiber and the molten resin, the glass fiber is first waxed by a waxing machine die before entering the extruder die. After waxing, the glass fiber surface is more effectively bonded to the molten resin. The waxing machine die uses the same structure as the extruder die to uniformly coat the surface with wax. To ensure a more uniform flow of molten resin, a resin valve is also provided on the extruder to control the opening and closing of the molten resin guide channel. This prevents the molten resin from being transported at a constant rate when the glass fiber transport rate changes, which would result in waste of molten resin. At the same time, the extruder is connected to a sensor that detects the opening and closing size of the resin valve. The sensor detects the state change of the resin valve and controls the delivery of wax liquid and glass fiber accordingly. In order to improve the processing efficiency of glass fiber, the extruder equipment is equipped with a total of multiple sets of waxing machine dies and extruder dies, which work simultaneously to improve work efficiency. Correspondingly, multiple sets of molten resin guide channels are set, which share a set of resin guide channels. End caps are set at the ends of the resin guide channels. In order to make the pressure of each set of molten resin guide channels the same, the end cap part is provided with a curved surface. The lower end of the end cap curved surface is spaced a certain distance from the nearest set of molten resin guide channels. The curved surface design converts the axial pressure of the molten resin into radial pressure, so that the pressure of the first guide channel of the terminal resin guide is consistent with the pressure of the first guide channel of other resin guides, avoiding the different pressures of different resin guide channels leading to different flow rates, thereby making the molten resin coated on the surface of the glass fiber different. In order to prevent the molten resin from solidifying after cooling, the extruder equipment is provided with multiple sets of heating rods to heat the molten resin. By having multiple groups working simultaneously and at the same time conveying the glass fiber at high speed, the molten resin can also meet the coating requirements, thus improving work efficiency. The molten resin on the surface of the coated glass fiber is more uniform and has a better effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an extruder device according to a preferred embodiment of the present invention;

[0019] Figure 2 A schematic diagram of a three-dimensional exploded structure of an extruder device according to a preferred embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of the die connector of the extruder equipment according to a preferred embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the three-dimensional structure of a molten resin die head of an extruder device according to a preferred embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the three-dimensional structure of a resin coating die head of an extruder device according to a preferred embodiment of the present invention;

[0023] Figure 6 Schematic diagram of the resin coating die head of the extruder equipment of the preferred embodiment of the present invention (viewed from the upper end face downward);

[0024] Figure 7 A schematic diagram of the three-dimensional structure of a resin valve of an extruder device according to a preferred embodiment of the present invention;

[0025] Figure 8 A schematic cross-sectional view of a wax coating die head of an extruder device according to a preferred embodiment of the present invention;

[0026] Figure 9 A schematic diagram of the three-dimensional structure of a sensor bracket of an extruder device according to a preferred embodiment of the present invention;

[0027] Figure 10 A schematic diagram of the three-dimensional structure of an extruder die head of an extruder device according to a preferred embodiment of the present invention;

[0028] Figure 11 Schematic diagram of the exploded structure of the extruder die head of the extruder equipment of the preferred embodiment of the present invention;

[0029] Figure 12 Schematic diagram of the three-dimensional structure of the glass fiber guide of the extruder die head according to a preferred embodiment of the present invention;

[0030] Figure 13 A schematic cross-sectional view of a glass fiber guide member of an extruder die head according to a preferred embodiment of the present invention;

[0031] Figure 14 A schematic diagram of the three-dimensional structure of a resin liquid guide die of an extruder die head according to a preferred embodiment of the present invention;

[0032] Figure 15 This is a schematic axial view of a resin liquid guide die of an extruder die according to a preferred embodiment of the present invention;

[0033] Figure 16Schematic diagram of the expansion of the molten resin flow channel of the extruder die head according to a preferred embodiment of the present invention;

[0034] Figure 17 Schematic diagram of the three-dimensional structure of the liquid guide die of the extruder die head according to the preferred embodiment of the present invention;

[0035] Figure 18 A schematic cross-sectional view of a liquid guide die of an extruder die according to a preferred embodiment of the present invention;

[0036] Figure 19 A schematic cross-sectional view of an extruder device according to a preferred embodiment of the present invention;

[0037] Figure 20 Extruder equipment for the preferred embodiment of the present invention Figure 19 A magnified schematic diagram of . DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the following will be a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0039] The die structure of the multi-point coating reinforcement production process of the preferred embodiment of the present invention; the extruder die 42 includes a glass fiber guide 421 for the glass fiber 6 to pass through, and also includes a resin liquid guide die 422 inserted into the glass fiber guide 421. One end of the resin liquid guide die 422 is inserted into the resin die 423, forming the entire structure of the extruder die 42. The glass fiber guide 421 is provided with a glass fiber transmission hole 4213 for the glass fiber 6 to pass through. The glass fiber 6 enters from one end of the glass fiber transmission hole 4213 and exits from the other end. The liquid guiding die head 422 is provided with a glass fiber guide part socket 4224 for the glass fiber guide part 421 to pass through, and the glass fiber guide part 421 is inserted from one end of the glass fiber guide part socket 4224 and passes through the other end; the liquid guiding die head part 422 is provided with a molten resin flow groove 4221 for the molten resin to pass through, and the liquid guiding die head part 422 is inserted into the resin die head part 423, and one end is set as a conical liquid guiding die head part cone 4223, and the molten resin flow groove 4221 extends to the liquid guiding die head part cone 4223. When the molten resin flows into the molten resin flow groove 4221, it will flow to the liquid guiding die head part cone 4223 under the flow of the liquid. A cone accommodating cavity 4231 is provided at one end of the liquid-guiding die head 423, and the cone 4223 of the liquid-guiding die head is inserted into the cone accommodating cavity 4231. A gap 424 is also formed between the outer wall of the cone 4223 of the liquid-guiding die head and the inner wall of the cone accommodating cavity 4231. A glass fiber outlet 4232 is provided at one end of the cone accommodating cavity away from the cone of the liquid-guiding die head. When molten resin flows into the cone 4223 of the liquid-guiding die head, it flows into the glass fiber surface from the gap 424 at the glass fiber outlet 4232, thereby forming a coating on the glass fiber surface, and then it is processed into a reinforced long glass fiber 7 coated with resin liquid.

[0040] Furthermore, the molten resin flow channel 4221 is Y-shaped and includes a molten resin flow channel inlet 4221a and a first molten resin flow channel 4221b that branches out from the inlet in a Y-shape. Further, a second solution flow channel 4221c is formed from this branched first molten resin flow channel 4221b, forming a Y-shaped molecular second solution flow channel 4221c. A total of four second solution flow channels 4221c are evenly distributed across the surface of the liquid-guiding die 422 and extend to the liquid-guiding die taper 4223. When the molten resin flows through the molten resin flow channel inlet 4221a, it is split into two by the first molten resin flow channel 4221b and then into four channels by the second solution flow channel 4221c. This ensures that the molten resin flows evenly through the gap 424 between the taper 4223 and the taper accommodating cavity 4231 of the liquid-guiding die, thereby forming a uniform coating on the glass fiber surface. The molten resin flow channel 4221 has a depth of 2 mm. It should be noted that the molten resin flow channel with four branches used in the present invention, the same three solution channels or six solution channels, and other changes that only improve the number of solution channels should all fall within the scope of protection of the present invention.

[0041] Furthermore, the liquid-guiding die head member 422 is provided with an extruder die head fixing seat 4222, through which the extruder die head 42 is fixed to the resin coating die head 41. The glass fiber guide member 421 is provided with a raised portion 4211 for fixing the liquid-guiding die head member 422. The end of the liquid-guiding die head member 422 is arranged on the periphery of the raised portion 4211 to connect with the glass fiber guide member 421. In order to better coat the surface of the glass fiber 6 with molten resin, the glass fiber transmission hole 4213 is set to a cone shape, one end of the glass fiber transmission hole 4213 is flush with the glass fiber outlet 4232, and the length of the glass fiber guide cone 4212 is longer than the liquid guide die head cone 4223, so that a gap 424 is also formed between the outer wall of the glass fiber guide cone 4212 and the inner wall of the cone accommodating cavity 4231. The molten resin flows from the gap 424 at the upper part of the liquid guide die head cone 4223 into the gap 424 at the upper part of the glass fiber guide cone 4212, and then coats the glass fiber 6 with the molten resin at the glass fiber outlet 4232. Since the tapered portion 4212 of the glass fiber guide is longer than the tapered portion 4223 of the liquid guide die head, the molten resin covers the periphery of the tapered portion 4212 of the glass fiber guide more evenly, so that the periphery is filled with molten resin, and then forms a coating-like coating on the glass fiber 6. The thickness of the molten resin on the surface of the reinforced long glass fiber 7 coated with the molten resin is more uniform, and the effect is better.

[0042] Furthermore, in order to make the molten resin in the gap 424 more uniform, the inner wall of the cone accommodating cavity 4231 is set to be conical corresponding to the cone 4213 of the glass fiber guide and the cone 4223 of the liquid guide die head, so that the thickness of the gap 424 is basically consistent, thereby achieving a more uniform coating effect.

[0043] Further, before glass fiber 6 enters extruder die head 42, first enter waxing machine die head 52 and coat one layer of wax liquid on its surface, waxing machine die head 52 structures are identical with extruder die head 42, and are not repeated here.Difference is that the glass fiber outlet 4232 of waxing machine die head 52 is connected with the second waxing die head 521, and waxing die head 521 insides are provided with the passage that glass fiber passes, and the glass fiber of coating wax liquid solidifies in this passage, then passes out and enters extruder die head 42.It should be noted that waxing machine die head 52 and extruder die head 42 need be coaxially arranged, to ensure the transmission of glass fiber 6.Coating one layer of wax liquid on glass fiber 6 surfaces then coating molten resin, coating effect is better, and stability is higher.

[0044] During use, the glass fiber guide 421 is inserted into the resin liquid guide die 422 and, after assembly, connected to the resin die 423. At this point, the glass fiber guide tapered portion 4212 partially protrudes from the liquid guide die tapered portion 4323 and is disposed within the tapered portion accommodating cavity 4231, with a gap 424 remaining between the outer wall and the inner wall of the glass fiber accommodating cavity 4231. The end of the glass fiber guide tapered portion 4212 is flush with the glass fiber outlet 4232. When molten resin flows into the extruder die 42 from the molten resin flow channel inlet 4221a, under the action of the molten resin pressure, it diffuses toward the first molten resin flow channel 4221b, continues to diffuse toward the second solution flow channel 4221c, and finally flows toward the gap 424. When the glass fiber 6 passes through the glass fiber transmission hole 4213, it is evenly coated with molten resin at the glass fiber outlet 4232, forming a glass fiber coated with molten resin. Before entering the extruder die 42, it first enters the waxing machine die 52 to evenly coat the wax liquid on the surface of the glass fiber. The waxing machine die 52 has the same structure as the extruder die 42. By coating the wax liquid and then coating the resin liquid, an enhanced reinforced long glass fiber is formed, which has better strength and impact resistance.

[0045] The multi-point coating type reinforced production process extruder equipment of the preferred embodiment of the present invention; the equipment includes a resin liquid conducting die head 3, one end of which is connected to the die head connector 1, and the molten resin is transported to the molten resin die head 3 through the die head connector 1. The lower end of the molten resin die head 3 is connected to an extruder, and the extruder 4 includes a resin coating die head 41. The extruder die head 42 is inserted into the resin coating die head 41. The molten resin die head 3 and the resin coating die head 41 are provided with a channel for conducting the molten resin, and the molten resin is transported to the molten resin flow groove 4221. The side of the extruder 4 is also connected to a waxing machine 5, and the waxing machine 5 includes a wax coating die head 51. The waxing machine die head 52 is inserted into the wax coating die head 51, and the wax liquid flows from the wax coating die head 51 to the wax coating die head 51.

[0046] When the glass fiber 6 passes through the waxing machine 5, the wax liquid is coated on the surface of the glass fiber through the waxing machine die 52, and then the molten resin is transported from the die connector 1 to the extruder 4, and then coated on the surface of the glass fiber coated with the wax liquid through the extruder die 42, and comes out of the extruder 42 to form a reinforced long glass fiber 7 coated with the resin liquid, thereby forming a reinforced glass fiber with higher strength and better corrosion resistance.

[0047] Furthermore, the resin liquid guiding die 3 is provided with a resin liquid guiding channel 32 inside, and its lower end is also provided with a resin liquid guiding first guide channel 36 connected to the resin liquid guiding channel 32. A copy forest connector 35 is provided at one end of the resin liquid guiding die 3, which is connected to the die connector 1, and a resin liquid guiding die end cap 31 is provided at the other end to seal the resin liquid guiding channel, allowing the molten resin to flow from the resin liquid guiding channel 32 into the resin liquid guiding first guide channel 36. A first cover plate 33 is also provided on one side of the resin liquid guiding die, and a second cover plate 34 is provided on the other side to cover both sides of the resin liquid guiding die 3. A socket 37 for inserting the screw 2 is provided in the vertical direction to connect and fix the resin liquid guiding die 3 and the extruder 4.

[0048] Furthermore, the resin liquid guiding die end cap 31 includes an end cap curved surface connecting seat 310, the size of which is the same as the size of the two sides of the resin liquid guiding channel 36. In the present invention, multiple groups of resin liquid guiding first guide channels 36 are provided. In order to make the pressure of each group of resin liquid guiding first guide channels 36 the same, an end cap curved surface 311 is also provided on the side close to the resin liquid guiding die 3, which is inserted into the resin liquid guiding channel 32, and the outer periphery of the end cap curved surface 311 is the same as the inner periphery of the molten resin channel 32, thereby preventing the molten resin from flowing out of the channel. And the lower end 3110 of the end cap curved surface will not block the resin liquid guiding first guide channel 36 closest to it. By designing the curved surface of the end cap, the axial pressure of the molten resin is converted into radial pressure, so that the pressure of the end resin liquid guiding first guide channel 36 is consistent with the pressure of other resin liquid guiding first guide channels 36.

[0049] Furthermore, the extruder die head 42 is inserted into the extruder die head socket 413 in the resin coating die head 41, and the upper end face 411 of the resin coating die head is connected to the resin liquid guiding die head 3. The resin coating die head 41 is provided with a third resin liquid guiding guide channel 414, which is connected to the first resin liquid guiding guide channel 36. The upper end of the third resin liquid guiding channel 414 reaches the upper end face of the resin coating die head, and the lower end is connected to the extruder die head socket 414, so that the molten resin is transported from the resin liquid guiding die head 3 to the extruder die head 42, and then the aforementioned extruder die head 42 is coated. The specific content will not be repeated here.

[0050] Furthermore, a resin valve socket 412 is provided above the extruder die socket 413, into which the resin valve 43 is inserted to control the opening and closing of the third resin guide channel 414. A second resin guide channel 431 is provided on the resin valve 43. When it is necessary to close the molten resin or reduce the flow of the molten resin, the resin valve 43 is rotated so that the second resin guide channel 431 and the third resin guide channel 414 are completely or partially offset. When full conduction is required, the second resin guide channel 431 and the third resin guide channel 414 are aligned. To ensure consistent pressure and flow rate of the molten resin in the guide channels, the radii of the first resin guide channel 36, the second resin guide channel 431, and the third resin guide channel 414 are the same.

[0051] Furthermore, the resin valve 43 is partially inserted into the resin valve insertion hole 412. The two ends of the inserted portion are provided with retaining spring grooves 432, which contain retaining springs to increase its rotational ability. The uninserted portion is provided with a handle 433, which is used to rotate and adjust the resin valve 43, thereby adjusting the flow of molten resin. The handle end 4331 is provided with a rounded block with a radius larger than the handle radius. The uninserted end of the resin valve 3 is also provided with a square hole.

[0052] Furthermore, the wax coating die 51 is provided with a waxing machine die socket 512, into which the waxing machine die 52 is inserted, and a wax guide channel 511 connected to the waxing machine die through hole 512 is also provided on the side. The wax is transported to the waxing machine die 52 through the wax guide channel 511, and then the wax is coated on the surface of the glass fiber 6. The specific details have been described above and will not be repeated here.

[0053] Furthermore, one end of the die connector 1 is fixed by a die connector fixing seat 13, and the other end is provided with a ferrule connector 11, which connects to the ferrule connector of the resin liquid delivery die 3. The die connector 1 is provided with a die connector channel 12 inside to transport molten resin from the outside to the resin liquid delivery die 3. The size and model can be determined based on the connection form of the ferrule connector according to the assembly force test.

[0054] Furthermore, a sensor bracket 44 is connected to the side of the resin liquid guide die 3, and a plurality of sensors 441 are provided on the sensor bracket. The sensor 441 is located above the handle 433, and detects the area of ​​the handle end 4331 to determine the opening state of the resin valve 43, and then controls the transmission speed of the glass fiber 6.

[0055] Furthermore, a protective cover 9 is provided on the side of the resin liquid guide die head 3 , which is fixed by a protective cover hanger 91 , one end of which is fixed above the resin liquid guide by a screw 2 , and the other end is connected to the sensor bracket hanging ear 442 on the sensor bracket 44 .

[0056] Furthermore, since the molten resin needs to be heated to prevent it from cooling and solidifying during transportation, heating rods 8 are provided on the upper and lower sides of the resin liquid guide die 3, and on the side of the resin coating die 41. The heating rods 8 are connected and conducted through heating rod conducting grooves 81. Due to the large overall structure of this device, long screws 2 are used to connect and fix the connection parts. The use of screws 2 also facilitates disassembly and maintenance.

[0057] Furthermore, in order to improve the production efficiency of the coated glass fiber, a total of 24 groups of extruder die heads 42 and waxing machine die heads 52 are set, and correspondingly, the extruder die head jack 412 and the waxing machine die head jack 512, the resin liquid guide channel and the resin valve 43 are all set in 24 groups, wherein 24 groups of sensors 441 all control their respective resin valves 43 separately, thereby improving the overall production efficiency. Even if a single group fails, the other groups can still continue to produce with high efficiency. It should be noted that simply repeating the extruder die head 42 and the waxing machine die head 52 and the corresponding components should fall within the scope of protection of the present invention.

[0058] During use, glass fiber 6 is released from the glass fiber station, passes through the waxing machine die 52, and then enters the extruder die 42. The processed molten resin enters the resin guide channel 32 through the die connector 1, and is then transported to the extruder die 42 through 24 sets of molten resin guide channels. Once the molten resin enters the resin guide channel 32, the end cap curved surface 311 converts the axial pressure of the molten resin into radial pressure, aligning the pressure in the terminal first guide channel 36 with the pressure in the other first guide channels 36. To adjust the flow of the molten resin, the resin valve 43 is adjusted to adjust the size of the molten resin channel or even close it. A sensor 441 is provided to sense the rotation angle of the handle 433 to determine the degree of opening or closing of the resin valve 42. Accordingly, when the molten resin channel is reduced or closed, the corresponding glass fiber station will also reduce the glass fiber transmission speed or stop releasing glass fiber. The molten resin then enters the extruder die 42, coating the surface of the glass fiber 6 with the molten resin. Before being coated with molten resin, the glass fibers 6 are coated with liquid wax by a waxing machine 5. By arranging multiple groups of glass fibers to operate simultaneously, work efficiency is improved. Furthermore, each group operates independently of the others, preventing a malfunction in one group from affecting the efficiency of other groups and improving overall efficiency. The reinforced long glass fibers 7 coated with molten resin are then delivered through an extruder die 42 to the next process.

[0059] The method for using the extruder die structure of the multi-point coating type reinforcement production process of the preferred embodiment of the present invention is to coat the molten resin on the surface of the glass fiber through the extruder die structure 42 to form the reinforced long glass fiber 7.

[0060] It should be noted that the present invention forms reinforced long glass fibers by coating the glass fiber surface with wax and molten resin. This structure can also be used for other reinforced polymers. However, when processing other polymers, the equipment channels must first be cleaned with molten resin. The same structure and method can then be used for processing and production. All polymer processing using the same structure and method should fall within the scope of protection of this invention.

[0061] It should be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An extruder device for a multi-point coating enhanced production process, the device comprising a resin liquid guide die head for introducing molten resin, the resin liquid guide die head being provided with a resin liquid guide channel, the molten resin flowing into the resin liquid guide channel from the outside, the lower end of the resin liquid guide die head being connected to an extruder, the resin liquid guide die head being provided with a resin liquid guide channel for introducing molten resin into the extruder, the extruder comprising a resin coating die head, and an extruder die head structure inserted into the resin coating die head, the extruder die head structure comprising a glass fiber guide for glass fiber to pass through, the glass fiber guide being inserted into the resin liquid guide die head component, the glass fiber guide being inserted from one end of the resin liquid guide die head component, and the glass fiber guide being inserted into the glass fiber guide The other end of the resin liquid guide die of the part is inserted into the resin die part, the part of the resin liquid guide die inserted into the resin die part is tapered, the outer wall of the resin liquid guide die is provided with a molten resin flow groove, the molten resin flow groove extends to the tapered part, the molten resin flow groove allows the molten resin flowing into the molten resin flow groove to flow straight to the tapered part, when the glass fiber passes through the extruder die structure, the molten resin flows into the extruder from the resin liquid guide channel and is coated on the surface of the glass fiber on the extruder, the extruder equipment is provided with multiple groups of resin liquid guide channels, the end of the resin liquid guide die is provided with a resin liquid guide die end cover that seals the resin liquid guide channel, and is characterized in that: The resin liquid guide die head end cover is inserted into the resin liquid guide channel and is provided with an end cover curved surface. A certain distance is left between the lower end of the end cover curved surface and the terminal resin liquid guide channel, thereby converting the axial pressure of the molten resin into a radial pressure, so that the pressure of the molten resin entering each group of resin liquid guide channels is the same.

2. The extruder device according to claim 1, characterized in that: The molten resin flow channel includes a molten resin flow channel inlet and a first molten resin flow channel branched in a Y shape from the inlet. The first molten resin flow channels are evenly arranged on the outer surface of the resin liquid guide die head.

3. The extruder device according to claim 2, characterized in that: The first molten resin flow groove forms a second molten resin flow groove with a Y-shaped branch, the end of the second molten resin flow groove extends to the tapered part of the liquid guide die head, the second molten resin flow groove is evenly arranged on the outer surface of the resin liquid guide die head, and the depth of the molten resin flow groove is 2 mm.

4. The extruder device according to any one of claims 1 to 3, characterized in that: One end of the glass fiber guide is tapered, which is inserted into the resin liquid guide die head and passes through the tapered portion of the resin liquid guide die head. The inner wall of the resin die head is tapered, and a gap is formed between it and the tapered portion of the glass fiber guide and the tapered portion of the resin liquid guide die head. The molten resin flows into the glass fiber outlet from the gap and covers the surface of the glass fiber.

5. The extruder device according to claim 4, characterized in that: The glass fiber first enters the waxing machine die head for waxing before entering the extruder die head. The waxing machine die head has the same structure as the extruder die head, and the waxing machine die head and the extruder die head are coaxially arranged.

6. The extruder device according to claim 1, characterized in that: The resin liquid guide channel is provided with a resin valve, which controls the flow of molten resin in the resin liquid guide channel. The extruder is also provided with a sensor for sensing the opening and closing size of the resin valve. When the sensor receives the adjustment information of the resin valve, it adjusts the delivery rate of the glass fiber and the molten resin at the same time.

7. The extruder device according to claim 6, characterized in that: The side of the extruder is also connected to a waxing machine. Before the glass fiber passes through the extruder, it is first coated with wax liquid on the surface of the glass fiber by the waxing machine. The wax liquid is transported to the waxing machine through a wax liquid delivery channel. A waxing machine die head is inserted into the waxing machine, and the waxing machine die head has the same structure as the extruder die head.

8. The extruder device according to claim 7, characterized in that: Each set of resin liquid guiding channels is correspondingly provided with a set of resin valves, extruder die heads and waxing machine die heads. At least one heating rod is inserted into the resin liquid guiding die heads and the extruder, and the heating rod keeps the molten resin in liquid form.

9. A coating method using the extruder equipment according to any one of claims 1 to 8, characterized in that: The method comprises the steps of allowing molten resin to pass through a die structure and be coated on the surface of glass fiber to form reinforced glass fiber.

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