A high-efficiency hot pressing device for prepreg processing

Abstract

The present invention relates to a high-efficiency hot pressing device for prepreg processing, comprising a frame and a conveying platform arranged on the frame, the conveying platform being used for transmitting adjacent prepregs, and a hot pressing plate a and a hot pressing plate b being slidingly arranged on the upper and lower sides of the conveying platform, hot pressing plates a and hot pressing plates b being staggeredly arranged with hot pressing strips, the hot pressing plates a and hot pressing plates b moving toward each other and alternately hot pressing the head and tail overlaps of adjacent prepregs through the hot pressing strips, the hot pressing plates a and the hot pressing plates are both provided with blocking components for blocking the prepregs after hot melting, and a pressing component is further provided above the conveying platform, the pressing component is used for repeatedly pressing the prepregs during the conveying of the prepregs, so that adjacent prepregs are fused with each other to complete the hot pressing connection, thereby solving the problem that the rectangular tooth-shaped splicing joints of the two prepregs after cutting are easily misaligned during the conveying process, resulting in poor subsequent hot pressing effect.

Description

Technical Field

[0001] The invention relates to the technical field of prepreg production, in particular to a hot pressing device for prepreg processing. Background Art

[0002] Prepreg is an intermediate product of resin-based composite materials, which contains matrix resins such as epoxy, phenolic, bismaleimide, etc. and reinforcing fibers such as carbon fiber, glass fiber, aramid fiber, basalt fiber, etc. It has the advantages of good mechanical properties; few product defects; precise control of fiber volume content; good consistency in performance and processing characteristics; and the best performance / weight ratio.

[0003] A Chinese invention patent application with publication number CN109648736A discloses a continuous prepreg automatic processing production line and process. The production line automatically cuts the connecting ends of two prepregs to be connected to form a first splicing joint and a second splicing joint that are interlaced and spliced ​​with each other in a rectangular tooth shape. The first splicing joint and the second splicing joint are then simultaneously hot-pressed by a hot pressing mechanism so that the resins on the first splicing joint and the second splicing joint are hot-melted and compatible to form a connection, thereby solving the technical problem of inconsistent thickness after prepreg splicing.

[0004] However, the inventors found that the device has the following problems: the rectangular tooth-shaped joints of the two prepregs after cutting are easily misaligned during transportation, resulting in poor subsequent hot pressing effects. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and invent an efficient hot pressing device for prepreg processing. The device comprises a hot pressing plate a and a hot pressing plate b which are slidingly arranged on the upper and lower sides of a conveying platform. Hot pressing strips are staggered on the hot pressing plate a and the hot pressing plate b. The head and tail overlaps of adjacent prepregs are alternately hot pressed by the staggered hot pressing strips. A pressing assembly is provided on the side of the hot pressing strip. The pressing assembly is used to repeatedly press the prepregs after alternating hot pressing, so that the hot melt parts of adjacent prepregs are fused with each other to complete the hot pressing connection, thereby solving the problem that the rectangular tooth-shaped splicing joints of the two prepregs after cutting are easily misaligned during the conveying process, resulting in poor subsequent hot pressing effect.

[0006] In response to the above technical problems, the technical solution adopted by the present invention is as follows: a high-efficiency hot pressing device for prepreg processing, comprising a frame and a conveying platform arranged on the frame, the conveying platform is used to transmit adjacent prepregs, and a hot pressing plate a and a hot pressing plate b are slidingly arranged on the upper and lower sides of the conveying platform, and hot pressing strips are staggered on the hot pressing plate a and the hot pressing plate b, the hot pressing plate a and the hot pressing plate b move toward each other and alternately hot press the head and tail overlaps of adjacent prepregs through the hot pressing strips, the hot pressing plate a and the hot pressing plate are both provided with blocking components for blocking the prepregs after hot melting, and a pressing component is also provided above the conveying platform, and the pressing component is used to repeatedly press the prepregs during the conveying of the prepregs, so that adjacent prepregs are fused with each other to complete the hot pressing connection.

[0007] As a preferred embodiment, slide rails are provided on both sides of the frame, threaded rods are rotatably provided in the slide rails, sliders a and slider b are slidably provided at the upper and lower ends of the threaded rods, hot presses are provided on the sliders a and b, and the hot pressing plates a and b are respectively provided on the hot presses on the sliders a and b, a motor a is provided on the frame, and belts are provided between the motor a and the threaded rods on both sides.

[0008] As a preferred embodiment, support columns are provided on both sides of the hot pressing plate a and the hot pressing plate b, and the blocking assembly includes an "L"-shaped baffle slidably set on the support column, and a limiting block is provided on the end face of the support column. The end face of the baffle is in contact with the end face of the hot pressing plate, and the width is the same as the width of the hot pressing plate.

[0009] As a preferred embodiment, the pressing assembly includes a motor b arranged at the upper end of the frame and a pressing plate driven by the motor b, a turntable is provided on the output shaft of the motor b, a protrusion is centrifugally provided on the turntable, a sliding rod is slidingly provided on the frame, the pressing plate is provided at the lower end of the sliding rod, and the sliding rod and the protrusion are hingedly connected by a linkage plate.

[0010] As a preferred embodiment, a plurality of through grooves are provided on the conveying platform, and the through grooves are arranged corresponding to the hot pressing strips on the hot pressing plate b, and the length and width of the through grooves are the same as those of the hot pressing strips.

[0011] As a preference, the threaded rod is provided with a threaded segment a and a threaded segment b, the threaded segment a and the threaded segment b have opposite rotation directions, and the slider a and the slider b are slidably provided on the threaded segment a and the threaded segment b respectively.

[0012] As a preferred embodiment, a spring sleeved on the support column is provided between the limit block and the baffle.

[0013] As a preference, the length of the pressing plate is set to be the same as that of the hot pressing plate.

[0014] Beneficial effects of the present invention:

[0015] A slide rail is arranged on the frame, and a threaded rod is rotatably arranged in the slide rail. Two sets of hot presses on the upper and lower parts of the conveying platform are respectively slidably arranged on the threaded rod through slider a and slider b. The two sets of hot presses are respectively provided with hot pressing plates a and hot pressing plates b. Hot pressing plates a and hot pressing plates b are alternately provided with hot pressing strips. The hot pressing plates a and hot pressing plates b move toward each other under the drive of the threaded rod and perform alternate hot pressing on the head and tail overlaps of adjacent prepregs through the staggered hot pressing strips, instead of alternating cutting to prevent subsequent prepregs from shifting during the conveying process.

[0016] A motor b41 is arranged at the upper end of the frame, a turntable is arranged on the output shaft of the motor b41, a protrusion is centrifugally arranged on the turntable, a slide rod is slidingly arranged on the frame, the slide rod and the protrusion are hingedly connected by a linkage plate, and a pressing plate is arranged at the lower end of the slide rod. When the turntable rotates under the drive of the motor, the centrifugally arranged protrusion and the hinged linkage plate can drive the pressing plate to move back and forth, so that the overlapping parts of the prepreg after hot pressing are reciprocated by the pressing plate, and the overlapping parts of the prepreg are smoothed to make them consistent in thickness with the rest of the prepreg.

[0017] By setting support columns on both sides of hot pressing plate a and hot pressing plate b, an "L"-shaped baffle is slidably set on the support columns. The "L"-shaped baffle fits with the end surface of the hot pressing plate to prevent the solution of the prepreg from diffusing to both sides during the hot melting process.

[0018] In summary, the equipment has the advantages of alternating hot pressing at the prepreg joints, consistent thickness at the splicing points, and avoiding solution diffusion, and is particularly suitable for the field of prepreg production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a high-efficiency hot pressing device for prepreg processing;

[0021] Figure 2 A partial top view of a high-efficiency hot pressing device for prepreg processing;

[0022] Figure 3 A partial cross-sectional view of a high-efficiency hot pressing device for prepreg processing;

[0023] Figure 4 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0025] Figure 6 A schematic diagram of the structure of a threaded rod in a high-efficiency hot pressing device for prepreg processing;

[0026] Figure 7 This is a working state diagram of a high-efficiency hot pressing device for prepreg processing;

[0027] Figure 8 This is a working state diagram of a high-efficiency hot pressing device for prepreg processing.

[0028] The attached drawings are marked as follows: 1. Frame; 2. Conveyor platform; 3. Hot pressing plate a; 4. Hot pressing plate b; 5. Hot pressing strip; 6. Blocking assembly; 7. Pressing assembly; 21. Slide rail; 22. Threaded rod; 23. Slider a; 24. Slider b; 25. Hot press; 26. Motor a; 27. Belt; 31. Support column; 32. "L"-shaped baffle; 33. Limit block; 41. Motor b; 42. Pressing plate; 43. Turntable; 44. Bump; 45. Slider; 46. Linkage plate; 51. Through slot; 61. Threaded segment a; 62. Threaded segment b; 71. Spring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings. Example 1

[0030] like Figures 1 to 8 As shown, a high-efficiency hot pressing device for prepreg processing includes a frame 1 and a conveying platform 2 arranged on the frame 1, the conveying platform 2 is used to transmit adjacent prepregs, and hot pressing plates a3 and hot pressing plates b4 are slidingly arranged on the upper and lower sides of the conveying platform 2, and hot pressing strips 5 are staggered on the hot pressing plates a3 and b4. The hot pressing plates a3 and b4 move toward each other and alternately hot press the head and tail overlaps of adjacent prepregs through the hot pressing strips 5. The hot pressing plates a3 and b4 are provided with blocking components 6 on both sides for blocking the prepregs after hot melting. A pressing component 7 is also provided above the conveying platform 2, and the pressing component 7 is used to repeatedly press the prepregs during the conveying of the prepregs, so that adjacent prepregs are fused with each other to complete the hot pressing connection.

[0031] like Figure 1As shown in Figures 2 and 3, slide rails 21 are provided on both sides of the frame 1, and threaded rods 22 are rotatably provided in the slide rails 21. Slide blocks a23 and b24 are slidably provided at the upper and lower ends of the threaded rod 22. Hot presses 25 are provided on the sliders a23 and b24, and the hot pressing plates a3 and b4 are respectively provided on the hot presses 25 on the sliders a23 and b24. A motor a26 is provided on the frame 1, and belts 27 are sleeved between the motor a1 and the threaded rods 22 on both sides.

[0032] It is worth mentioning here that by arranging slide rails 21 on both sides of the frame 1, threaded rods are rotatably arranged in the slide rails 21, and the hot press 25 is slidably set on the slide rails 21 on both sides through sliders, and is driven to move by the rotation of the threaded rods, which can ensure the stability and accuracy of the hot press during movement.

[0033] like Figure 5 As shown, support columns 31 are provided on both sides of the hot pressing plate a3 and the hot pressing plate b4, and the blocking assembly 6 includes an "L"-shaped baffle 32 slidably set on the support column 31, and a limiting block 33 is provided on the end face of the support column 31. The end face of the "L"-shaped baffle 32 is in contact with the end face of the hot pressing plate, and the width is the same as the width of the hot pressing plate.

[0034] It is worth mentioning here that by setting support columns 31 on both sides of the hot pressing plate a3 and the hot pressing plate b4, an "L"-shaped baffle 32 is slidably set on the support column 31. The "L"-shaped baffle 32 is in contact with the end face of the hot pressing plate to prevent the solution of the prepreg from diffusing to both sides during the hot melting process.

[0035] like Figure 1 , as shown in Figure 5, the pressing assembly 7 includes a motor b41 arranged at the upper end of the frame 1 and a pressing plate 42 driven by the motor b41. A turntable 43 is provided on the output shaft of the motor b41, and a protrusion 44 is centrifugally provided on the turntable 43. A slide rod 45 is slidingly provided on the frame 1, and the pressing plate 42 is provided at the lower end of the slide rod 45. The slide rod 45 and the protrusion 44 are hingedly connected by a linkage plate 46.

[0036] It is worth mentioning here that by hingedly connecting the slide rod 45 and the protrusion 44 through the linkage plate 46, the turntable 43 can be rotated to drive the protrusion 44 to rotate centrifugally, and the linkage plate 46 can be used to drive the pressing plate 42 to move back and forth, thereby reciprocatingly pressing the overlapping parts of the prepreg after hot pressing, and smoothing the overlapping parts of the prepreg to make them consistent in thickness with the rest of the prepreg.

[0037] like Figure 3 As shown, a plurality of through slots 51 are provided on the conveying platform 2 , and the through slots 51 are arranged corresponding to the hot pressing strips 5 on the hot pressing plate b4 , and the length and width of the through slots 51 are the same as those of the hot pressing strips 5 .

[0038] It is worth mentioning here that by setting the through groove 51 corresponding to the hot pressing strip 5 on the hot pressing plate b4, the length and width of the through groove 51 are the same as those of the hot pressing strip 5, so that the hot pressing strip 5 on the hot pressing plate b4 can pass through the through groove 51 to achieve hot pressing of the prepreg.

[0039] like Figure 3 As shown in FIG6 , a threaded segment a61 and a threaded segment b62 are provided on the threaded rod 22. The threaded segment a61 and the threaded segment b62 have opposite rotation directions. The slider a23 and the slider b24 are respectively slidably provided on the threaded segment a61 and the threaded segment b62.

[0040] It is worth mentioning that by rotating the threaded segment a61 and the threaded segment b62 in opposite directions, the threaded rod 22 can be rotated to drive the sliders a23 and b24 to move towards each other to simultaneously perform hot pressing on both sides of the prepreg.

[0041] like Figure 5 As shown, a spring 71 sleeved on the support column 31 is provided between the limiting block 33 and the “L”-shaped baffle 32 .

[0042] It is worth mentioning here that by providing a spring 71 mounted on the support column 31 between the limit block 33 and the "L"-shaped baffle 32, the "L"-shaped baffle 32 can continue to move for hot pressing through the spring 71 after contacting the conveyor table 2, and the "L"-shaped baffle 32 can be reset through the spring 71 after the hot pressing plate completes the hot pressing and rises.

[0043] like Figure 1 As shown, the pressing plate 42 is set to have the same length as the hot pressing plate.

[0044] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the invention.

[0045] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "one" should not be understood as a limit to the number.

[0046] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art based on the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A high-efficiency hot pressing device for prepreg processing, comprising a frame (1) and a conveying platform (2) arranged on the frame (1), characterized in that: The conveying platform (2) is used to transport adjacent prepregs. A hot pressing plate a (3) and a hot pressing plate b (4) are slidingly provided on the upper and lower sides of the conveying platform (2). Hot pressing strips (5) are staggered on the hot pressing plates a (3) and the hot pressing plates b (4). The hot pressing plates a (3) and the hot pressing plates b (4) move toward each other and perform alternate hot pressing on the head and tail overlaps of adjacent prepregs through the hot pressing strips (5). Both sides of the hot pressing plates a (3) and the hot pressing plates b (4) are provided with blocking components (6) for blocking the prepregs after hot melting. A pressing component (7) is also provided above the conveying platform (2). The pressing component (7) is used to repeatedly press the prepregs during the conveying process of the prepregs so that the adjacent prepregs are fused with each other to complete the hot pressing connection. Slide rails (21) are provided on both sides of the frame (1), threaded rods (22) are rotatably provided in the slide rails (21), sliders a (23) and sliders b (24) are slidably provided at the upper and lower ends of the threaded rod (22), hot presses (25) are provided on the sliders a (23) and the sliders b (24), and the hot press plates a (3) and the hot press plates b (4) are respectively provided on the hot presses (25) on the sliders a (23) and the sliders b (24), and a motor a (26) is provided on the frame (1), and belts (27) are provided between the motor a (1) and the threaded rods (22) on both sides; The pressing assembly (7) includes a motor b (41) arranged at the upper end of the frame (1) and a pressing plate (42) driven by the motor b (41), a turntable (43) is arranged on the output shaft of the motor b (41), a protrusion (44) is centrifugally arranged on the turntable (43), a slide rod (45) is slidably arranged on the frame (1), the pressing plate (42) is arranged at the lower end of the slide rod (45), and the slide rod (45) and the protrusion (44) are hingedly connected via a linkage plate (46); The threaded rod (22) is provided with a threaded section a (61) and a threaded section b (62), wherein the threaded section a (61) and the threaded section b (62) have opposite rotation directions, and the slider a (23) and the slider b (24) are respectively slidably provided on the threaded section a (61) and the threaded section b (62).

2. The high-efficiency hot pressing device for prepreg processing according to claim 1, characterized in that: Support columns (31) are provided on both sides of the hot pressing plate a (3) and the hot pressing plate b (4). The blocking assembly (6) includes an "L"-shaped baffle (32) slidably arranged on the support column (31). A limiting block (33) is provided on the end face of the support column (31). The end face of the "L"-shaped baffle (32) is in contact with the end face of the hot pressing plate, and the width is the same as the width of the hot pressing plate.

3. The high-efficiency hot pressing device for prepreg processing according to claim 1, characterized in that: The conveying platform (2) is provided with a plurality of through slots (51), the through slots (51) being arranged corresponding to the hot pressing strips (5) on the hot pressing plate b (4), and the length and width of the through slots (51) are the same as those of the hot pressing strips (5).

4. The high-efficiency hot pressing device for prepreg processing according to claim 2, characterized in that: A spring (71) sleeved on the support column (31) is provided between the limit block (33) and the "L"-shaped baffle (32).

5. The high-efficiency hot pressing device for prepreg processing according to claim 1, characterized in that: The length of the pressing plate (42) is set to be the same as that of the hot pressing plate.

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