A reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge

Abstract

The invention discloses a reciprocating pultruder suitable for a glass fiber reinforced plastic bridge, and the invention relates to the technical field of pultruders. The invention comprises an extruder, the extruder is fixedly connected to the side of the support plate away from the bottom plate, the winding box is fixedly connected to the top of the bottom plate, the winding assembly is slidably connected to the inside of the winding box, the impregnation shell is fixedly connected to the top of the bottom plate, the impregnation assembly is slidably connected to the inner wall of the impregnation shell, the extrusion assembly is fixedly connected to the top of the bottom plate, one side of the winding box is fixedly connected to the side of the threading plate away from the extruder, and the remaining two threading plates are slidably connected to the inside of the impregnation shell, the number of threading plates is set to three, the three threading plates gradually become smaller, and the glass fiber yarns inserted into the three threading plates gradually come together to form a dense structure, which is conducive to improving the strength of the glass fiber reinforced plastic bridge after forming, and the glass fiber yarns unwound from the winding box are far apart, and each fiber is clearly distinguished when punching, and it is not easy to pierce the wrong hole.

Description

Technical Field

[0001] The invention relates to the technical field of pultrusion machines, and in particular to a reciprocating pultrusion machine suitable for a glass fiber reinforced plastic bridge. Background Art

[0002] FRP bridge is composed of glass fiber reinforced plastic, flame retardant and other materials, and is pressed by composite molded materials and sandwiched with stainless steel shielding mesh. Due to the low thermal conductivity of the selected materials and the addition of flame retardant, the product not only has fire resistance and heat insulation, self-extinguishing, but also has high corrosion resistance. It also has the advantages of light structure, aging resistance, safety and reliability. It can be easily used with metal bridges and is used in strong corrosive environments such as chemical industry, metallurgy, and petroleum.

[0003] In the prior art, pultrusion machines are mainly used for the molding of fiber-reinforced composite plastics such as FRP. The hydraulic FRP pultrusion machine for producing FRP profiles is mainly composed of a yarn frame, a frame, a dipping machine, a preheating device, a heating and forming device, a traction device, a sawing device and a finished product frame. After the glass yarn passes through the glue tank from the yarn frame and is dipped in resin glue, it is solidified and formed in the inner cavity of the extruder and is pressed and drawn out by the traction device to become a continuous FRP profile. The glass fiber yarn and glass fiber felt required for molding are easily entangled with each other, affecting the molding effect. Before molding, the glass fiber yarn and felt need to be passed in and out of the device, which is easy to cause mis-threading or entanglement. Therefore, we proposed a reciprocating pultruder suitable for FRP bridge frames. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge, comprising:

[0005] A bottom plate, a support plate being symmetrically arranged on the top of the bottom plate;

[0006] A pultrusion mechanism, the pultrusion mechanism having an impregnation structure for impregnating glass fiber yarn and glass fiber mat with resin;

[0007] The top of the bottom plate is fixedly connected to the bottom of the support plate, and the bottom of the pultrusion mechanism is fixedly connected to the top of the bottom plate;

[0008] Wherein, the pultrusion mechanism comprises:

[0009] An extruder, the discharge port of which is arranged in the shape of a glass fiber reinforced plastic bridge frame, and is used for forming the glass fiber reinforced plastic bridge frame;

[0010] A winding assembly, wherein the winding assembly is provided with two winding structures for respectively winding the glass fiber yarn and the glass fiber mat, and a winding box is provided outside the winding assembly;

[0011] An infiltration component, and an infiltration shell disposed outside the infiltration component;

[0012] an extrusion assembly having a sliding structure for extruding a combined glass fiber yarn and glass fiber mat;

[0013] A threading plate, wherein three threading plates are provided, and the three threading plates gradually become smaller toward the side close to the extruder;

[0014] The side of the extruder close to the bottom plate is fixedly connected to the side of the support plate away from the bottom plate, the winding box is fixedly connected to the top of the bottom plate away from the extruder, the winding assembly is slidably connected to the inside of the winding box, the wetting shell is arranged at the gap between the winding box and the extruder, the wetting shell is fixedly connected to the top of the bottom plate, the wetting assembly is slidably connected to the inner wall of the wetting shell, the extrusion assembly is arranged at the gap between the wetting shell and the extruder, and the extrusion assembly is fixedly connected to the top of the bottom plate, the side of the winding box close to the extruder is fixedly connected to the side of the threading plate away from the extruder, and the remaining two threading plates are slidably connected to the inside of the wetting shell, glass fiber yarn is placed inside the winding box, glass fiber felt is placed on the upper and lower sides of the glass fiber yarn, and the glass fiber yarn and felt pass through the winding box, three The fiberglass bridge is made of a plurality of threading plates, a wetting shell, and an extrusion component, and finally enters the extruder, and is then pulled at the die head of the extruder to complete the pultrusion molding of the glass fiber reinforced plastic bridge. The winding component is used to wind and unwind the glass fiber yarn and felt respectively, the wetting component fully impregnates the glass fiber yarn and felt with resin, and the extrusion component extrude the combination of the glass fiber yarn and felt to squeeze out excess resin. Since there are three threading plates, and the three threading plates gradually become smaller toward the side close to the extruder, this means that the glass fiber yarns inserted into the three threading plates gradually move closer to form a dense structure, which is beneficial to improving the strength of the formed glass fiber reinforced plastic bridge. In addition, the glass fiber yarns just unwound from the winding box are far apart and are not easy to entangle with each other. They are also clearly distinguished when punching holes, and are not easy to pierce wrong holes, which can reduce the error rate of operators.

[0015] Furthermore, first grooves are symmetrically provided on both sides of the threading plate on the surface of the winding box, the first grooves are provided on the side of the winding box close to the extruder, second grooves are symmetrically provided on both sides of the two threading plates located inside the impregnation shell, and the second grooves are provided on the surface of the impregnation shell, the first groove and the two second grooves gradually approach the threading plate in the direction close to the extruder, the glass fiber felt passes through the first groove and the two second grooves in sequence, and after the glass fiber yarn and the felt pass through the threading plate and the first groove and the second groove respectively, they are tightened at the feeding end of the extruder to make the two The first trough body and the two second trough bodies gradually approach the threading plate toward the extruder, and the two glass fiber felts form a sideways V-shaped structure, which gradually approaches the glass fiber yarn, thereby gradually completing the combination of the two, to avoid the glass fiber yarn felts being tightened and causing mutual friction due to the different lengths of the two between the winding box and the impregnation shell at the beginning due to the different insertion sequences, thereby avoiding wrinkles on the glass fiber felts, and the sideways V-shaped structure has a larger interval inside the impregnation shell, which can fully contact the resin and ensure the impregnation effect.

[0016] Furthermore, the winding assembly includes a partition, and there are two of the partitions, both of which are slidably connected to the inner wall of the winding box, a yarn winding drum is provided at the interval between the two partitions, and a plurality of the yarn winding drums are provided, and the yarn winding drum is rotatably connected to the sides of the two partitions close to each other through a rotating rod, and a limiting plate is symmetrically arranged inside the winding box, and the sides of the two limiting plates away from each other are slidably connected to the inner wall of the infiltration shell, and the sides of the two limiting plates close to each other are rotatably connected to a felt winding drum through a rotating rod. When winding, the winding box is first opened, and the yarn winding drum and the felt winding drum are taken out from bottom to top respectively, and the glass fiber felt is wound onto the winding The surface of the felt cylinder, after taking out the two partitions, remove the partition that is not fixed to the rotating rod, and then take out the winding cylinder that is rotatably connected to the rotating rod, wind the glass fiber yarn onto the surface of the winding cylinder, and complete the winding of all the winding cylinders and the felt cylinders in turn, and then pass the glass fiber yarn and felt through the threading plate and the first slot body, and then perform the assembly operation in reverse, close the winding box, and the assembled structure of the winding component can independently wind the glass fiber yarn and felt during winding, which is not easy to cause entanglement and can speed up the winding speed. After taking out the winding component, the threading plate and the first slot body on the winding box are exposed, which can be easily inserted and exited, further reducing the preparation time before pultrusion.

[0017] Furthermore, the infiltration component includes a slide, which is symmetrically arranged inside the infiltration shell, and the sides of the two slides that are far away from each other are slidably connected to the inner wall of the infiltration shell, and the sides of the two slides that are close to each other are fixedly connected to the two sides of the two threading plates respectively. The slide is taken out, and the glass fiber yarn is passed through the two threading plates in turn, and the two pieces of glass fiber felt are pressed to the upper and lower sides of the threading plates respectively, and then the slide is put into the infiltration shell. The slide is taken out, which can drive the two threading plates to be taken out. The position can be adjusted after taking out, and the glass fiber yarn and felt can be operated more easily. The glass fiber yarn and felt are relatively soft, and direct insertion is easy to produce bending and wrinkles. The removal operation is not easy to produce bending and wrinkles due to friction resistance, and it is convenient to arrange the glass fiber yarn and felt.

[0018] Furthermore, a slide plate is symmetrically provided on the side of the impregnation shell away from the bottom plate, and the slide plate is slidably connected to the inner wall of the impregnation shell, and an arc plate is fixedly connected to the side where the two slides are close to each other, and both sides of the arc plate are fixedly connected to the side where the two slides are close to each other, and an impregnation roller is provided at the interval between the two slides, and both ends of the impregnation roller are rotatably connected to the side where the two slides are close to each other, and the impregnation roller is arranged below the second trough body, and resin is added from the top of the impregnation shell, and the liquid level reaches the bottom of the second trough body. After the glass fiber yarn and felt pass through the threading plate on one side and the second trough body, they pass under the impregnation roller and then pass through the threading plate on the other side and the second trough body. Since the impregnation roller is arranged below the second trough body, the glass fiber yarn and felt can be fully impregnated in the resin to ensure the absorption of the resin by the glass fiber yarn and the felt, and the top of the impregnation shell is shielded by the arc plate to prevent dust from falling in.

[0019] Furthermore, the extrusion assembly includes a plate body, which is fixedly connected to the top of the base plate, and two plate bodies are symmetrically arranged. An extrusion roller is arranged at the interval between the two plate bodies, and both ends of the extrusion roller are rotatably connected to the side of the two plate bodies close to each other. The glass fiber yarn and felt are passed through the interval between the two extrusion rollers, and the extrusion roller located above is driven to descend to extrude the glass fiber yarn and felt, squeeze out excess resin, and avoid dripping of excessive resin.

[0020] Furthermore, a rotating arm is provided on the side of the two plates away from each other, and two groups of rotating arms are provided, and each group of rotating arms is provided with two rotating arms. The sides of the two rotating arms close to each other are rotatably connected to the two ends of the extrusion roller, and the end of the rotating arm away from the extrusion roller is rotatably connected to the outer surface of the infiltration shell. An arc groove is provided on the surface of the plate body, and the inner wall of the arc groove is slidingly connected to the surface of the extrusion roller located above. The driving arm rotates and drives the extrusion roller located above to descend, thereby extruding the glass fiber yarn and felt and squeezing out excess resin. By providing the arc groove, the spacing between the two extrusion rollers can be adjusted, thereby extruding glass fiber yarns and felts of different thicknesses, making them adhere under the adhesion of the resin to form a combined raw material and extrude excess resin. The combined raw material is then put into the feed end of the extruder, and the combined raw material is fed during the traction process to drive the extrusion roller to rotate.

[0021] Furthermore, a drainage groove is provided on the surface of the extrusion roller. The drainage groove is provided in a trapezoidal shape and is arranged in an axial arc shape along the extrusion roller. The surface of the drainage groove is provided with rounded corners. Through extrusion, the glass fiber yarn and felt are squeezed out of the resin, and the resin enters the drainage groove. The drainage groove drains the resin to accelerate its dripping. During the rotation of the extrusion roller, since the drainage groove is arranged in an arc shape, a part of an arc groove always faces downward during the rotation, so that the resin slides downward under the influence of its own gravity, and the drainage effect is better. It can also prevent the resin from accumulating inside the drainage groove, and prevent the resin from solidifying and affecting the drainage effect. The drainage groove is arranged in a trapezoidal shape, and the gap for the resin to enter is smaller, which can avoid reducing the resin reflux and reduce the re-absorption of the resin by the glass fiber yarn and felt, and can ensure the extrusion effect. The surface of the drainage groove is provided with rounded corners, which can prevent the burrs on the drainage groove from being hooked to the surface of the glass fiber felt and prevent the glass fiber felt from being damaged.

[0022] Furthermore, a heating block is provided at the interval between the extrusion roller and the bottom plate, and both sides of the heating block are fixedly connected to the side where the two plates are close to each other, and the heating block is arranged in an arc shape on the side away from the bottom plate, and a hollow triangular prism is fixedly connected to the arc surface of the heating block on the side close to the infiltration shell, and a return hole is provided on the side of the hollow triangular prism away from the infiltration shell, and resin drips onto the top of the heating block, and the heating block heats the resin to prevent it from solidifying, and then it slides onto the surface of the hollow triangular prism, enters the hollow triangular prism through the return hole, and finally flows back into the inside of the infiltration shell, and the triangular prism-shaped hollow triangular prism also has a triangular inner wall, which can better converge the resin entering the inside, ensure that all the resin can flow back, and avoid solidification blockage caused by resin residue, and the arc-shaped top of the heating block can ensure the sliding and convergence of the resin to avoid resin residue.

[0023] Furthermore, a guide tube is fixedly connected to the inner wall of the return hole, and the end of the guide tube away from the heating block successively penetrates the hollow triangular prism and the infiltration shell, the outer surface of the guide tube is fixedly connected to the hollow triangular prism and the inner wall of the infiltration shell, the end of the guide tube located inside the infiltration shell is fixedly connected to a pump body, and the side of the pump body away from the guide tube is fixedly connected to a return pipe. When the pump body is started, the pump body pumps the resin out of the hollow triangular prism through the guide tube, and finally enters the infiltration shell through the return pipe, completing the reflux, and reciprocatingly recycling the resin to complete the reciprocating pultrusion molding of the glass fiber reinforced plastic bridge.

[0024] The present invention has the beneficial effects:

[0025] 1. The present invention provides a pultrusion mechanism, wherein the winding assembly is used to respectively wind and unwind the glass fiber yarn and the felt, the impregnation assembly fully impregnates the glass fiber yarn and the felt with resin, and the extrusion assembly extrudes the combination of the glass fiber yarn and the felt to squeeze out excess resin. Since there are three threading plates, and the three threading plates gradually become smaller toward the side close to the extruder, this means that the glass fiber yarns inserted into the three threading plates gradually move closer to form a dense structure, which is beneficial to improving the strength of the glass fiber steel bridge after molding. In addition, the glass fiber yarns just unwound from the winding box are far apart and are not easily entangled with each other. When punching holes, each threading yarn is clearly distinguished and is not easy to pierce the wrong hole, which can reduce the error rate of operators.

[0026] 2. The present invention sets a first trough body. As the first trough body and the two second trough bodies gradually approach the threading plate in the direction approaching the extruder, two glass fiber felts form a sideways V-shaped structure and gradually approach the glass fiber yarn, thereby gradually completing the combination of the two. This avoids the glass fiber yarn felts being tightened and causing mutual friction due to the different lengths of the two between the winding box and the impregnation shell at the beginning due to different insertion sequences, thereby avoiding wrinkles of the glass fiber felts. The sideways V-shaped structure has a larger interval inside the impregnation shell and can fully contact the resin to ensure the impregnation effect.

[0027] 3. The present invention provides a winding component with an assembled structure, which can independently wind the glass fiber yarn and felt during winding, is not easy to cause entanglement, and can speed up the winding speed. After taking out the winding component, the threading plate on the winding box is exposed to the first slot body, which can be easily inserted and removed, further reducing the preparation time before pultrusion. Taking out the slide can drive the two threading plates to be taken out, and the position can be adjusted after taking out, so that the glass fiber yarn and felt can be easily operated. The glass fiber yarn and felt are relatively soft, and direct insertion is easy to cause bending and wrinkles. The removal operation is not easy to cause bending and wrinkles due to friction resistance, and it is convenient to arrange the glass fiber yarn and felt.

[0028] 4. The present invention sets an extrusion roller, which descends to extrude the glass fiber yarn and felt, squeezes out excess resin, and avoids excessive resin dripping. The drainage groove drains the resin to accelerate its dripping. During the rotation of the extrusion roller, since the drainage groove is set in an arc shape, a part of an arc groove always faces downward during the rotation, so that the resin slides downward under the influence of its own gravity, and the drainage effect is better. It can also prevent the resin from accumulating inside the drainage groove, and prevent the resin from solidifying and affecting the drainage effect. The drainage groove is set in a trapezoidal shape, and the gap for the resin to enter is smaller, which can avoid reducing the resin reflux and reduce the re-absorption of the resin by the glass fiber yarn and felt, and can ensure the extrusion effect. The surface rounded corners of the drainage groove can prevent the burrs of the drainage groove from being hooked on the surface of the glass fiber felt, and avoid the glass fiber felt from being damaged.

[0029] 5. The present invention sets a triangular hollow column. The inner wall of the triangular hollow prism is also triangular, which can better gather the resin entering the interior, ensure that all the resin can flow back, and avoid solidification blockage caused by resin residue. The arc-shaped top of the heating block can ensure the resin's sliding and convergence to avoid resin residue. The pump body pumps the resin out of the hollow triangular prism through the guide pipe, and finally enters the infiltration shell through the reflux pipe to complete the reflux, and the resin is reciprocated and recycled to complete the reciprocating pultrusion molding of the glass fiber reinforced plastic bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a reciprocating pultrusion machine applicable to a glass fiber reinforced plastic bridge frame of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the infiltration mechanism of the present invention;

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of the infiltration mechanism of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the winding assembly of the present invention;

[0034] Figure 5 It is a schematic diagram of the cross-sectional structure of the winding box of the present invention;

[0035] Figure 6 This is a schematic diagram of the assembly structure of the infiltration component of the present invention;

[0036] Figure 7 This is a schematic diagram of the cross-sectional structure of the infiltration shell of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure of the extrusion roller of the present invention.

[0039] In the figure: 1. bottom plate; 2. support plate; 3. pultrusion mechanism; 31. extruder; 32. winding box; 33. impregnation shell; 34. second tank body; 35. winding assembly; 351. partition; 352. yarn winding drum; 353. limit plate; 354. felt winding drum; 36. impregnation assembly; 361. slide; 362. slide plate; 363. arc plate; 364. impregnation roller; 37. threading plate; 38. first tank body; 39. extrusion assembly; 391. plate body; 392. rotating arm; 393. extrusion roller; 394. arc groove; 395. drainage groove; 396. hollow triangular prism; 397. return hole; 398. pump body; 399. reflux pipe; 3910. guide pipe; 3911. heating block. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0041] Example 1, please refer to Figure 1-Figure 7 The present invention is a reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge, comprising:

[0042] A bottom plate 1, a support plate 2 is symmetrically arranged on the top of the bottom plate 1;

[0043] A pultrusion mechanism 3, wherein the pultrusion mechanism 3 has an impregnation structure for impregnating the glass fiber yarn and the glass fiber mat with resin;

[0044] The top of the bottom plate 1 is fixedly connected to the bottom of the support plate 2, and the bottom of the pultrusion mechanism 3 is fixedly connected to the top of the bottom plate 1;

[0045] Wherein, the pultrusion mechanism 3 comprises:

[0046] An extruder 31, wherein the discharge port of the extruder 31 is configured in the shape of a glass fiber reinforced plastic bridge frame, and is used for forming the glass fiber reinforced plastic bridge frame;

[0047] A winding assembly 35, wherein the winding assembly 35 is provided with two winding structures for winding the glass fiber yarn and the glass fiber mat respectively, and a winding box 32 is provided outside the winding assembly 35;

[0048] An infiltration component 36, and an infiltration housing 33 disposed outside the infiltration component 36;

[0049] An extrusion assembly 39 having a sliding structure for extruding the combined glass fiber yarn and glass fiber mat;

[0050] A threading plate 37, wherein three threading plates 37 are provided, and the three threading plates 37 gradually become smaller toward the side close to the extruder 31;

[0051] The side of the extruder 31 close to the bottom plate 1 is fixedly connected to the side of the support plate 2 away from the bottom plate 1, the winding box 32 is fixedly connected to the top of the bottom plate 1 away from the extruder 31, the winding assembly 35 is slidably connected to the inside of the winding box 32, the impregnation shell 33 is arranged at the interval between the winding box 32 and the extruder 31, the impregnation shell 33 is fixedly connected to the top of the bottom plate 1, the impregnation assembly 36 is slidably connected to the inner wall of the impregnation shell 33, the extrusion assembly 39 is arranged at the interval between the impregnation shell 33 and the extruder 31, and the extrusion assembly 39 is fixedly connected to the top of the bottom plate 1, the side of the winding box 32 close to the extruder 31 is fixedly connected to the side of the threading plate 37 away from the extruder 31, and the remaining two threading plates 37 are slidably connected to the inside of the impregnation shell 33, glass fiber yarn is placed inside the winding box 32, and glass fiber felt is placed on the upper and lower sides of the glass fiber yarn, and the glass fiber yarn and the felt pass through the winding box 3 in sequence 2. Three threading plates 37, impregnation shell 33, extrusion assembly 39, and finally enter the extruder 31, and then are pulled at the die head of the extruder 31 to complete the pultrusion molding of the glass fiber reinforced plastic bridge frame. The winding assembly 35 is used to wind and unwind the glass fiber yarn and felt respectively. The impregnation assembly 36 fully impregnates the glass fiber yarn and felt with resin. The extrusion assembly 39 extrude the combination of the glass fiber yarn and felt to squeeze out excess resin. Since there are three threading plates 37, and the three threading plates 37 gradually become smaller toward the side close to the extruder 31, this means that the glass fiber yarns inserted into the three threading plates 37 gradually move closer to form a dense structure, which is beneficial to improving the strength of the glass fiber reinforced plastic bridge frame after molding. In addition, the glass fiber yarns just unwound from the winding box 32 are far apart and are not easy to entangle with each other. When punching, each strand is clearly distinguished and it is not easy to pierce the wrong hole, which can reduce the error rate of operators.

[0052] The first grooves 38 are symmetrically provided on both sides of the threading plate 37 located on the surface of the winding box 32. The first grooves 38 are provided on the side of the winding box 32 close to the extruder 31. The second grooves 34 are symmetrically provided on both sides of the two threading plates 37 located inside the impregnation shell 33. The first grooves 38 and the two second grooves 34 gradually approach the threading plate 37 in the direction close to the extruder 31. The glass fiber felt passes through the first grooves 38 and the two second grooves 34 in sequence. After the glass fiber yarn and the felt pass through the threading plate 37, the first grooves 38, and the second grooves 34 respectively, they are fed into the feed of the extruder 31. The ends are pulled tight to make the two stretched straight, and then they are trimmed and pulled into the extruder 31 for extrusion molding. As the first trough body 38 and the two second trough bodies 34 gradually approach the threading plate 37 in the direction of the extruder 31, the two glass fiber felts form a sideways V-shaped structure, which gradually approaches the glass fiber yarn, thereby gradually completing the combination of the two, avoiding that at the beginning, due to the different insertion sequences, the two have different lengths between the winding box 32 and the impregnation shell 33, and the glass fiber yarn felts are tightened to cause mutual friction, thereby avoiding wrinkles on the glass fiber felts. The sideways V-shaped structure has a larger interval inside the impregnation shell 33, which can fully contact the resin to ensure the impregnation effect.

[0053] The winding assembly 35 includes a partition 351, and the number of the partitions 351 is set to two. The two partitions 351 are both slidably connected to the inner wall of the winding box 32. A yarn winding drum 352 is set at the interval between the two partitions 351. There are a plurality of yarn winding drums 352, and the yarn winding drum 352 is rotatably connected to the side of the two partitions 351 close to each other through a rotating rod. The interior of the winding box 32 is symmetrically provided with limiting plates 353. The side of the two limiting plates 353 away from each other is slidably connected to the inner wall of the infiltration shell 33. The side of the two limiting plates 353 close to each other is rotatably connected to the felt winding drum 354 through a rotating rod. When winding, first open the winding box 32, and take out the yarn winding drum 352 and the felt winding drum 354 from bottom to top, and wind the glass fiber felt onto the felt winding drum 354. 54 surface, after taking out the two partitions 351, remove the partition 351 that is not fixed to the rotating rod, then take out the winding drum 352 that is rotatably connected to the rotating rod, wind the glass fiber yarn onto the surface of the winding drum 352, complete the winding of all the winding drums 352 and the felt winding drum 354 in sequence, then pass the glass fiber yarn and felt through the threading plate 37 and the first slot body 38, then reverse the assembly operation, close the winding box 32, the assembled structure of the winding component 35 can independently wind the glass fiber yarn and felt during winding, is not easy to be entangled, can speed up the winding speed, and after taking out the winding component 35, the threading plate 37 and the first slot body 38 on the winding box 32 are exposed, can be easily inserted and passed out, further reducing the preparation time before pultrusion.

[0054] The infiltration component 36 includes a slide 361, which is symmetrically arranged inside the infiltration shell 33. The sides of the two slides 361 that are away from each other are slidably connected to the inner wall of the infiltration shell 33, and the sides of the two slides 361 that are close to each other are fixedly connected to the two sides of the two threading plates 37 respectively. The slide 361 is taken out, and the glass fiber yarn is passed through the two threading plates 37 in turn, and the two pieces of glass fiber felt are pressed to the upper and lower sides of the threading plates 37 respectively. Then the slide 361 is put into the infiltration shell 33 and the slide 361 is taken out. It can drive the two threading plates 37 to be taken out. After taking it out, the position can be adjusted, and the glass fiber yarn and felt can be operated more easily. The glass fiber yarn and felt are relatively soft, and direct insertion is easy to produce bending and wrinkles. The removal operation is not easy to produce bending and wrinkles due to friction resistance, and it is convenient to arrange the glass fiber yarn and felt.

[0055] A slide plate 362 is symmetrically arranged on one side of the infiltration shell 33 away from the bottom plate 1, and the slide plate 362 is slidably connected to the inner wall of the infiltration shell 33. The two slide plates 362 are fixedly connected to the sides close to each other with an arc plate 363. The two sides of the arc plate 363 are fixedly connected to the sides close to each other of the two slides 361. An infiltration roller 364 is arranged at the interval between the two slides 361. The two ends of the infiltration roller 364 are rotatably connected to the sides close to each other of the two slides 361, and the infiltration roller 364 is arranged below the second trough 34, from the infiltration Resin is added to the top of the shell 33, and the liquid level reaches the bottom of the second tank body 34. The glass fiber yarn and felt pass through the threading plate 37 and the second tank body 34 on one side, pass under the wetting roller 364, and then pass through the threading plate 37 and the second tank body 34 on the other side. Since the wetting roller 364 is arranged under the second tank body 34, the glass fiber yarn and felt can be fully soaked in the resin to ensure that the glass fiber yarn and felt absorb the resin. The top of the impregnation shell 33 is shielded by setting the arc plate 363 to prevent dust from falling.

[0056] Example 2, please refer to Figure 1-Figure 9 The extrusion assembly 39 includes a plate body 391, which is fixedly connected to the top of the bottom plate 1, and two plate bodies 391 are symmetrically arranged. An extrusion roller 393 is arranged at the interval between the two plate bodies 391. The two ends of the extrusion roller 393 are rotatably connected to the side of the two plate bodies 391 close to each other. The glass fiber yarn and felt are passed through the interval between the two extrusion rollers 393, and the extrusion roller 393 located above is driven to descend to extrude the glass fiber yarn and felt, squeeze out excess resin, and avoid dripping of excessive resin.

[0057] A rotating arm 392 is provided on the side of the two plates 391 that are away from each other. The rotating arms 392 are provided with two groups, and each group of rotating arms 392 is provided with two arms. The sides of the two rotating arms 392 that are close to each other are rotatably connected to the two ends of the squeezing roller 393, and the end of the rotating arm 392 that is away from the squeezing roller 393 is rotatably connected to the outer surface of the infiltration shell 33. An arc groove 394 is provided on the surface of the plate 391, and the inner wall of the arc groove 394 is slidably connected to the surface of the squeezing roller 393 located above. The rotating arm 392 is driven to rotate, and the squeezing roller 393 located above is driven to descend, so as to extrude the glass fiber yarn and felt and squeeze out excess resin. By providing the arc groove 394, the spacing between the two squeezing rollers 393 can be adjusted, so as to extrude glass fiber yarns and felts of different thicknesses, so that they adhere to each other under the adhesion of the resin to form a combined raw material and extrude excess resin. The combined raw material is then put into the feeding end of the extruder 31. During the traction process, the combined raw material is fed to drive the squeezing roller 393 to rotate.

[0058] The surface of the squeeze roller 393 is provided with a drainage groove 395, which is arranged in a trapezoidal shape and arranged in an arc shape along the axial direction of the squeeze roller 393. The surface of the drainage groove 395 is provided with a rounded corner. Through extrusion, the glass fiber yarn and the felt are squeezed out of the resin, and the resin enters the drainage groove 395. The drainage groove 395 drains the resin to accelerate its dripping. During the rotation of the squeeze roller 393, since the drainage groove 395 is arranged in an arc shape, a portion of the arc groove 394 always goes downward during the rotation, Under the influence of the resin's own gravity, it slides downward, and the drainage effect is better. It can also prevent the resin from accumulating inside the drainage groove 395, and prevent the resin from solidifying and affecting the drainage effect. The drainage groove 395 is set to be trapezoidal, and the gap for the resin to enter is smaller, which can avoid reducing the resin backflow and reduce the re-absorption of the resin by the glass fiber yarn and felt, and can ensure the extrusion effect. The rounded corners of the surface of the drainage groove 395 can prevent the burrs of the drainage groove 395 from hooking onto the surface of the glass fiber felt, thereby preventing the glass fiber felt from being damaged.

[0059] A heating block 3911 is provided at the interval between the extrusion roller 393 and the bottom plate 1. The two sides of the heating block 3911 are fixedly connected to the sides of the two plates 391 close to each other. The heating block 3911 is arranged in an arc shape on the side away from the bottom plate 1. A hollow triangular prism 396 is fixedly connected to the arc surface of the heating block 3911 on the side close to the infiltration shell 33. A return hole 397 is provided on the side of the hollow triangular prism 396 away from the infiltration shell 33. The resin drips onto the top of the heating block 3911. The heating block 3911 The resin is heated to prevent it from solidifying, and then it slides down to the surface of the hollow triangular prism 396, enters the hollow triangular prism 396 through the return hole 397, and finally flows back into the inside of the infiltration shell 33. The triangular prism-shaped hollow triangular prism 396 also has a triangular inner wall, which can better gather the resin entering it and ensure that all the resin can flow back to avoid resin residue causing solidification blockage. The arc-shaped top of the heating block 3911 can ensure the sliding and gathering of the resin to avoid resin residue.

[0060] The inner wall of the return hole 397 is fixedly connected with a guide tube 3910, and the end of the guide tube 3910 away from the heating block 3911 passes through the hollow triangular prism 396 and the infiltration shell 33 in sequence. The outer surface of the guide tube 3910 is fixedly connected to the hollow triangular prism 396 and the inner wall of the infiltration shell 33, and the end of the guide tube 3910 located inside the infiltration shell 33 is fixedly connected with a pump body 398, and the side of the pump body 398 away from the guide tube 3910 is fixedly connected with a return pipe 399. Start the pump body 398, and the pump body 398 pumps the resin out of the hollow triangular prism 396 through the guide tube 3910, and finally enters the infiltration shell 33 through the return pipe 399, completing the reflux, and reciprocatingly recycling the resin to complete the reciprocating pultrusion molding of the glass fiber reinforced plastic bridge.

[0061] When in use, first open the winding box 32, and take out the yarn winding drum 352 and the felt winding drum 354 from bottom to top, respectively, wind the glass fiber felt onto the surface of the felt winding drum 354, take out the two partitions 351, and then remove the partition 351 that is not fixed to the rotating rod, and then take out the yarn winding drum 352 rotatably connected to the rotating rod, wind the glass fiber yarn onto the surface of the yarn winding drum 352, and complete the winding of all the yarn winding drums 352 and the felt winding drum 354 in sequence, and then pass the glass fiber yarn and felt through the threading plate 37 and the first slot body 38, and then reverse the assembly operation, close the winding box 32, take out the slide 361, and after the glass fiber yarn and felt pass through the threading plate 37 and the second slot body 34 on one side, pass under the impregnation roller 364, and then Pass through the threading plate 37 and the second trough body 34 on the other side, pass the glass fiber yarn and felt through the gap between the two squeezing rollers 393, drive the squeezing roller 393 located above to descend, squeeze the glass fiber yarn and felt, and press the two glass fiber felts to the upper and lower sides of the threading plate 37 respectively, then put the slide 361 into the impregnation shell 33, tighten at the feed end of the extruder 31 to make the two straight, then cut them evenly, and then pull them into the extruder 31 for extrusion molding, add resin from the top of the impregnation shell 33, the liquid level reaches the bottom of the second trough body 34, the glass fiber yarn and felt impregnated with the resin, finally enter the extruder 31, and then pull at the die head of the extruder 31 to complete the pultrusion molding of the FRP bridge frame.

[0062] Obviously, the described embodiments are only 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 and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge, characterized in that: include: A bottom plate (1), a support plate (2) being symmetrically arranged on the top of the bottom plate (1); A pultrusion mechanism (3), the pultrusion mechanism (3) having an impregnation structure for impregnating glass fiber yarn and glass fiber mat with resin; The top of the bottom plate (1) is fixedly connected to the bottom of the support plate (2), and the bottom of the pultrusion mechanism (3) is fixedly connected to the top of the bottom plate (1); Wherein, the pultrusion mechanism (3) comprises: An extruder (31), wherein the discharge port of the extruder (31) is arranged in the shape of a glass fiber reinforced plastic bridge frame, and is used for forming the glass fiber reinforced plastic bridge frame; A winding assembly (35), the winding assembly (35) being provided with two winding structures for respectively winding the glass fiber yarn and the glass fiber mat, and a winding box (32) being provided outside the winding assembly (35); An infiltration component (36), and an infiltration shell (33) arranged outside the infiltration component (36); An extrusion assembly (39) having a sliding structure for extruding the combined glass fiber yarn and glass fiber mat; A threading plate (37), wherein the number of the threading plates (37) is three, and the three threading plates (37) gradually become smaller toward a side close to the extruder (31); The side of the extruder (31) close to the bottom plate (1) is fixedly connected to the side of the support plate (2) away from the bottom plate (1); the winding box (32) is fixedly connected to the top of the bottom plate (1) away from the extruder (31); the winding assembly (35) is slidably connected to the inside of the winding box (32); the impregnation shell (33) is arranged at the interval between the winding box (32) and the extruder (31); the impregnation shell (33) is fixedly connected to the top of the bottom plate (1); the impregnation The wetting component (36) is slidably connected to the inner wall of the wetting shell (33), the extrusion component (39) is arranged at the interval between the wetting shell (33) and the extruder (31), and the extrusion component (39) is fixedly connected to the top of the bottom plate (1), the side of the winding box (32) close to the extruder (31) is fixedly connected to the side of the threading plate (37) away from the extruder (31), and the remaining two threading plates (37) are slidably connected to the inside of the wetting shell (33).

2. A reciprocating pultrusion machine suitable for FRP bridge according to claim 1, characterized in that: A first groove (38) is symmetrically provided on both sides of a threading plate (37) located on the surface of the winding box (32), and the first groove (38) is provided on the side of the winding box (32) close to the extruder (31). Second grooves (34) are symmetrically provided on both sides of two threading plates (37) located inside the infiltration shell (33), and the second grooves (34) are provided on the surface of the infiltration shell (33). The first groove (38) and the two second grooves (34) gradually approach the threading plate (37) in the direction close to the extruder (31).

3. A reciprocating pultrusion machine suitable for FRP bridge according to claim 2, characterized in that: The winding assembly (35) includes a partition (351), wherein two partitions (351) are provided, and the two partitions (351) are both slidably connected to the inner wall of the winding box (32); a yarn winding drum (352) is provided at the interval between the two partitions (351); a plurality of yarn winding drums (352) are provided, and the yarn winding drum (352) is rotatably connected to the sides of the two partitions (351) that are close to each other through a rotating rod; limiting plates (353) are symmetrically provided inside the winding box (32); the sides of the two limiting plates (353) that are away from each other are slidably connected to the inner wall of the infiltration shell (33); the sides of the two limiting plates (353) that are close to each other are rotatably connected to a felt winding drum (354) through a rotating rod.

4. A reciprocating pultrusion machine suitable for FRP bridge according to claim 3, characterized in that: The infiltration assembly (36) comprises a slide (361), and the slide (361) is symmetrically arranged inside the infiltration shell (33). The sides of the two slides (361) that are away from each other are slidably connected to the inner wall of the infiltration shell (33), and the sides of the two slides (361) that are close to each other are fixedly connected to the two sides of the two threading plates (37).

5. A reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge according to claim 4, characterized in that: A slide plate (362) is symmetrically arranged on one side of the infiltration shell (33) away from the bottom plate (1), and the slide plate (362) is slidably connected to the inner wall of the infiltration shell (33). The two slide plates (362) are fixedly connected to the sides close to each other with arc plates (363). The two sides of the arc plates (363) are fixedly connected to the sides close to each other of the two slides (361). A wetting roller (364) is arranged at the interval between the two slides (361), and the two ends of the wetting roller (364) are rotatably connected to the sides close to each other of the two slides (361), and the wetting roller (364) is arranged below the second trough body (34).

6. A reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge according to claim 5, characterized in that: The extrusion assembly (39) comprises a plate body (391), wherein the plate body (391) is fixedly connected to the top of the bottom plate (1), and two plate bodies (391) are symmetrically arranged, and an extrusion roller (393) is arranged at the interval between the two plate bodies (391), and the two ends of the extrusion roller (393) are rotatably connected to the side of the two plate bodies (391) that are close to each other.

7. A reciprocating pultrusion machine suitable for FRP bridge according to claim 6, characterized in that: A rotating arm (392) is provided on the side of the two plates (391) that is away from each other. The rotating arms (392) are provided in two groups, and each group of the rotating arms (392) is provided with two. The sides of the two rotating arms (392) that are close to each other are rotatably connected to the two ends of the squeezing roller (393), and the end of the rotating arm (392) that is away from the squeezing roller (393) is rotatably connected to the outer surface of the infiltration shell (33). An arc groove (394) is provided on the surface of the plate body (391), and the inner wall of the arc groove (394) is slidably connected to the surface of the squeezing roller (393) located above.

8. The reciprocating pultrusion machine suitable for FRP bridge according to claim 7, characterized in that: The surface of the squeezing roller (393) is provided with a drainage groove (395), the drainage groove (395) is provided in a trapezoidal shape, and the drainage groove (395) is arranged in an axial arc shape along the squeezing roller (393), and the surface of the drainage groove (395) is rounded.

9. A reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge according to claim 8, characterized in that: A heating block (3911) is arranged at the interval between the extrusion roller (393) and the bottom plate (1), and the two sides of the heating block (3911) are fixedly connected to the sides of the two plates (391) that are close to each other. The heating block (3911) is arranged in an arc shape on the side away from the bottom plate (1), and a hollow triangular prism (396) is fixedly connected to the arc surface of the heating block (3911) on the side close to the infiltration shell (33), and a return hole (397) is opened on the side of the hollow triangular prism (396) away from the infiltration shell (33).

10. A reciprocating pultrusion machine suitable for glass fiber reinforced plastic bridge according to claim 9, characterized in that: The inner wall of the return hole (397) is fixedly connected with a guide tube (3910), and the end of the guide tube (3910) away from the heating block (3911) passes through the hollow triangular prism (396) and the infiltration shell (33) in sequence, and the outer surface of the guide tube (3910) is fixedly connected to the inner wall of the hollow triangular prism (396) and the infiltration shell (33). The guide tube (3910) is connected to the pump body (398) at one end located inside the infiltration housing (33). A return pipe (399) is fixedly connected to the side of the pump body (398) away from the flow guide pipe (3910).

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