Hot melting fiber coating structure of one-way prepreg tape machine

Abstract

The utility model discloses a one-way prepreg tape machine hot melt coating fiber structure, which comprises a rack, the rack comprises an upper coating part and a lower coating part, the upper coating part comprises an upper coating groove and an upper rotating shaft, the lower coating part comprises a lower coating groove and a lower rotating shaft, the lower coating groove is arranged at the top of the lower coating part, and the lower rotating shaft is arranged at the bottom of the lower coating part. Rotary positioning devices are arranged on the rack, the rotary positioning devices are arranged at the connecting positions of the upper rotating shaft and the rack and the connecting positions of the lower rotating shaft and the rack respectively, and the upper coating grooves and the lower coating grooves are formed in a staggered mode in the height direction. In the rotating process of the rotary positioning device, due to the spatial change of the two linear contact positions of the upper coating groove and the lower coating groove, the tension of the glass fiber is adjusted, and the glass fiber straightening device has the advantages of being adjustable in tension, and good in secondary straightening and coating effects.

Description

Technical Field

[0001] The utility model relates to a coating structure, in particular to a unidirectional prepreg machine hot-melt coating fiber structure. Background Art

[0002] Hot-melt composite equipment usually melts plastic particles and then applies them to the surface of fiber materials, and then heat-presses and cools them to shape the glass fiber and the hot-melt plastic material into coils or sheets. The existing problem is that the existing coating method is that the molten plastic particles are coated on the surface of the glass fiber under the influence of gravity, and the glass fiber is only straightened by the front and rear traction devices. As a coating section in the process, the glass fiber cannot be straightened well, affecting the normal coating of the hot-melt material. Utility Model Content

[0003] The utility model aims to provide a unidirectional prepreg machine hot-melt coating fiber structure, which has the effect of secondary straightening and adjustment in the hot-melt plastic particle coating process.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a unidirectional prepreg machine hot melt coating fiber structure, including a frame, the frame including an upper coating part and a lower coating part, the upper coating part including an upper coating groove and an upper rotating shaft, the upper coating groove is arranged at the bottom of the upper coating part, the upper coating groove extends along the length direction of the upper coating part, the upper rotating shaft is arranged through the length direction of the upper coating part, the upper rotating shaft is rotatably connected to the frame, the lower coating part includes a lower coating groove and a lower rotating shaft, the lower coating groove is arranged at the top of the lower coating part, the lower coating groove extends along the length direction of the lower coating part, the lower rotating shaft is arranged through the length direction of the lower coating part, the lower rotating shaft is rotatably connected to the frame, a rotation positioning device is arranged on the frame, the rotation positioning device is respectively arranged at the connection position between the upper rotating shaft and the lower rotating shaft and the frame, and the upper coating groove and the lower coating groove are staggered in the height direction.

[0005] Preferably, an upper connector is provided between the upper rotating shaft and the upper coating portion, and a lower connector is provided between the lower rotating shaft and the lower coating portion.

[0006] Preferably, a hot melt flow channel is provided in both the upper coating part and the lower coating part, one end of the hot melt flow channel extends into the frame, and the other end of the hot melt flow channel is connected to the upper coating groove or the lower coating groove.

[0007] By adopting the above technical solution, the hot melt flow channel plays a role of heat preservation or heating of the hot melt plastic entering the upper coating part and the lower coating part, thereby avoiding solidification in the hot melt flow channel and discharging the material evenly.

[0008] Preferably, the upper coating portion is provided with clamping plates on both sides of the upper coating groove in the width direction, and positioning plates are provided at both ends of the clamping plates in the length direction. The positioning plates are slidably connected to limiting plates, and positioning holes are penetrated through the limiting plates. A positioning piece is threadedly connected to the positioning holes, and the bottom of the positioning piece abuts against the limiting plates, and a coating cavity for the fiber to pass through is formed between the limiting plates.

[0009] By adopting the above technical solution, a coating groove for discharging hot-melt plastic is formed between the clamping plates, and the limiting plate and the positioning plate cooperate to limit the coating area.

[0010] Preferably, an adjustment hole is provided on the side of the upper coating portion, an adjustment piece is threadedly connected to the adjustment hole, the adjustment piece is connected to the clamping plate, and the adjustment pieces are evenly distributed along the length direction of the upper coating portion.

[0011] By adopting the above technical solution, the adjustment space and the adjustment piece cooperate to adjust the discharge amount.

[0012] Preferably, an anti-slip block is provided on the top of the positioning plate, an anti-slip groove cooperating with the anti-slip block is slidably connected in the limiting plate, and the positioning hole passes through the anti-slip groove.

[0013] By adopting the above technical solution, the limiting plate is prevented from being separated from the positioning plate.

[0014] Preferably, the longitudinal section of the anti-dropping block is semicircular.

[0015] By adopting the above technical solution, a better limiting effect is achieved.

[0016] Preferably, the rotational positioning device includes a rotating worm wheel, a rotating worm, a rotating block and a fixed seat, the fixed seat is arranged on the inner side of the frame, the rotating worm is rotatably connected in the fixed seat, one end of the rotating worm passes through the fixed seat and is connected to the rotating block, the rotating worm wheel is concentrically arranged outside the upper rotating shaft, and the rotating worm wheel is meshed with the rotating worm.

[0017] Preferably, the upper coating portion and the lower coating portion have the same structure, and the upper coating portion and the lower coating portion are rotationally symmetrical in a height direction.

[0018] By adopting the above technical solution, the upper coating part and the lower coating part are symmetrically arranged.

[0019] Preferably, a collecting plate is provided on the side of the lower coating portion at the bottom of the upper coating groove, and the collecting plate extends along the length direction of the lower coating portion.

[0020] By adopting the above technical solution, the collecting plate plays a role in collecting the residual dripping hot-melt plastic to avoid overflowing on the ground.

[0021] To sum up, when the glass fiber is fed forward, the unfolded glass fiber passes through the lower coating groove of the lower coating part and the upper coating groove of the upper coating part in sequence. Since the upper coating part and the lower coating part are staggered in the height direction, the glass fiber is in a tensioned state. The rotation of the upper rotating shaft and the lower rotating shaft is controlled by the rotary positioning device. During the rotation, the tension of the glass fiber is adjusted due to the change in the spatial contact positions of the two lines. It has the advantages of adjustable tension, secondary straightening and good coating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment;

[0023] Figure 2 yes Figure 1 An enlarged schematic diagram of part A is shown;

[0024] Figure 3 is a side view of an embodiment;

[0025] Figure 4 yes Figure 3 The enlarged schematic diagram of part B is shown;

[0026] In the figure, 1, frame; 2, upper coating part; 22, upper rotating shaft; 23, upper connecting head; 24, adjusting hole; 3, lower coating part; 31, lower coating groove; 32, lower rotating shaft; 33, lower connecting head; 34, collecting plate; 4, rotating positioning device; 41, rotating worm gear; 42, rotating worm; 43, rotating block; 44, fixing seat; 51, clamping plate; 52, positioning plate; 53, anti-slip block; 54, limiting plate; 55, anti-slip groove; 56, positioning hole; 57, coating chamber. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0029] Example:

[0030] like Figures 1 to 4As shown, a unidirectional prepreg machine hot melt coated fiber structure includes a frame 1, the frame 1 includes an upper coating part 2 and a lower coating part 3, the upper coating part 2 includes an upper coating groove and an upper rotating shaft 22, the upper rotating shaft 22 is arranged to penetrate the length direction of the upper coating part 2, and the upper rotating shaft 22 is rotatably connected to the frame 1, the lower coating part 3 includes a lower coating groove 31 and a lower rotating shaft 32, the lower rotating shaft 32 is arranged to penetrate the length direction of the lower coating part 3, and the lower rotating shaft 32 is rotatably connected to the frame 1, and a rotation positioning device 4 is provided on the frame 1, and the rotation positioning device 4 is respectively arranged at the connection position between the upper rotating shaft 22 and the lower rotating shaft 32 and the frame 1, and then the rotation of the upper coating part 2 and the lower coating part 3 is realized by controlling the rotation of the upper rotating shaft 22 and the lower rotating shaft 32.

[0031] like Figure 1 As shown, the specific structure of the rotary positioning device 4 is a rotating worm wheel 41, a rotating worm 42, a rotating block 43 and a fixed seat 44. The fixed seat 44 is arranged on the inner side of the frame 1, and the rotating worm 42 is rotatably connected in the fixed seat 44. One end of the rotating worm 42 passes through the fixed seat 44 and is connected to the rotating block. The rotating worm wheel 41 is concentrically arranged outside the upper rotating shaft 22. The rotating worm wheel 41 is meshed with the rotating worm 42. The rotation of the upper rotating shaft 22 and the lower rotating shaft 32 is realized by rotating the rotating block 43.

[0032] like Figure 1 As shown, an upper connecting head 23 is arranged between the upper rotating shaft 22 and the upper coating part 2, a lower connecting head 33 is arranged between the lower rotating shaft 32 and the lower coating part 3, an upper coating groove is arranged at the bottom of the upper coating part 2, and the upper coating groove extends along the length direction of the upper coating part 2, and the lower coating groove 31 is arranged at the top of the lower coating part 3, and the lower coating groove 31 extends along the length direction of the lower coating part 3, and then the upper coating groove and the lower coating groove 31 are staggered in the height direction, and hot melt flow channels are arranged in the upper coating part 2 and the lower coating part 3, one end of the hot melt flow channel extends into the frame 1 or is connected to an external hot melt plastic screw feeding device, and the other end of the hot melt flow channel is communicated with the upper coating groove or the lower coating groove 31.

[0033] like Figure 2 As shown, in order to adjust the discharge amount of the upper coating groove and the lower coating groove 31, an adjustment hole 24 is set on the side of the upper coating part 2, and an adjustment piece is connected to the inner thread of the adjustment hole 24. The adjustment piece is connected to the clamping plate 51, and the adjustment piece is evenly distributed along the length direction of the upper coating part 2.

[0034] like Figure 2As shown, in order to limit the glass fiber on both sides of the width, the upper coating part 2 is provided with clamping plates 51 on both sides of the upper coating groove in the width direction, and positioning plates 52 are provided at both ends of the clamping plate 51 in the length direction. The positioning plate 52 is slidably connected to the limiting plate 54, and the limiting plate 54 is penetrated by a positioning hole 56. The positioning hole 56 is internally threaded with a positioning piece, and the locking of the limiting plate 54 is achieved by the positioning piece. The bottom of the positioning piece is in contact with the limiting plate 54, and a coating cavity for the fiber to pass through is formed between the relative limiting plates 54. The specific structure of the top of the positioning plate 52 is as shown in FIG. Figure 4 As shown, an anti-slip block 53 is provided on the top of the positioning plate 52, and the longitudinal cross-section of the anti-slip block 53 is semicircular. An anti-slip groove 55 cooperating with the anti-slip block 53 is slidably connected in the limiting plate 54, and a positioning hole 56 is provided through the anti-slip groove 55.

[0035] Meanwhile, the structures of the upper coating part 2 and the lower coating part 3 are consistent, and the upper coating part 2 and the lower coating part 3 are rotationally symmetrical in the height direction.

[0036] like Figure 4 As shown, in order to prevent the molten plastic from overflowing onto the ground, a collecting plate 34 is provided on the side of the lower coating portion 3 at the bottom of the upper coating groove, and the collecting plate 34 extends along the length direction of the lower coating portion 3.

[0037] Working principle:

[0038] When the glass fiber is fed forward, the unfolded glass fiber passes through the lower coating groove 31 of the lower coating part 3 and the upper coating groove of the upper coating part 2 in sequence. At the same time, the width directions of the multiple glass fiber bundles are limited by the limiting plates 54. Since the upper coating part 2 and the lower coating part 3 are staggered in the height direction, the glass fiber is in a tensioned state. The upper rotating shaft 22 and the lower rotating shaft 32 are controlled to rotate by the rotary positioning device 4. During the rotation, the glass fiber is tensioned because of the change in the spatial contact positions of the two lines. At the same time, the molten plastic in the upper coating groove and the lower coating groove 31 is coated on the upper and lower surfaces of the glass fiber.

Claims

1. A unidirectional prepreg machine hot melt coated fiber structure, comprising a frame (1), characterized in that: The frame (1) comprises an upper coating portion (2) and a lower coating portion (3); the upper coating portion (2) comprises an upper coating groove and an upper rotating shaft (22); the upper coating groove is arranged at the bottom of the upper coating portion (2); the upper coating groove extends along the length direction of the upper coating portion (2); the upper rotating shaft (22) penetrates the length direction of the upper coating portion (2); the upper rotating shaft (22) is rotatably connected to the frame (1); the lower coating portion (3) comprises a lower coating groove (31) and a lower rotating shaft (32); the lower coating groove (31) The lower coating groove (31) is arranged at the top of the lower coating portion (3), and extends along the length direction of the lower coating portion (3). The lower rotating shaft (32) is arranged to penetrate the length direction of the lower coating portion (3). The lower rotating shaft (32) is rotatably connected to the frame (1). The frame (1) is provided with a rotation positioning device (4). The rotation positioning device (4) is respectively arranged at the connection position between the upper rotating shaft (22) and the lower rotating shaft (32) and the frame (1). The upper coating groove and the lower coating groove (31) are staggered in the height direction.

2. The unidirectional prepreg machine hot melt coated fiber structure according to claim 1, characterized in that: An upper connecting head (23) is provided between the upper rotating shaft (22) and the upper coating part (2), and a lower connecting head (33) is provided between the lower rotating shaft (32) and the lower coating part (3).

3. The unidirectional prepreg machine hot melt coated fiber structure according to claim 1, characterized in that: The upper coating portion (2) and the lower coating portion (3) are both provided with a hot melt flow channel, one end of the hot melt flow channel extends into the frame (1), and the other end of the hot melt flow channel is connected to the upper coating groove or the lower coating groove (31).

4. The unidirectional prepreg machine hot melt coated fiber structure according to claim 1, characterized in that: The upper coating portion (2) is provided with clamping plates (51) on both sides of the width direction of the upper coating groove, and positioning plates (52) are provided at both ends of the clamping plates (51) in the length direction. The positioning plates (52) are slidably connected with a limiting plate (54), and a positioning hole (56) is penetrated through the limiting plate (54). A positioning piece is threadedly connected to the positioning hole (56), and the bottom of the positioning piece is in contact with the limiting plate (54), and a coating cavity for the fiber to pass through is formed between the limiting plate (54).

5. The unidirectional prepreg machine hot melt coated fiber structure according to claim 4, characterized in that: An adjustment hole (24) is provided on the side of the upper coating portion (2), and an adjustment piece is connected to the inner thread of the adjustment hole (24), and the adjustment piece is connected to the clamping plate (51), and the adjustment piece is evenly distributed along the length direction of the upper coating portion (2).

6. The unidirectional prepreg machine hot melt coated fiber structure according to claim 5, characterized in that: An anti-drop block (53) is arranged on the top of the positioning plate (52), an anti-drop groove (55) cooperating with the anti-drop block (53) is slidably connected in the limiting plate (54), and the positioning hole (56) is arranged to penetrate the anti-drop groove (55).

7. The unidirectional prepreg machine hot melt coated fiber structure according to claim 6, characterized in that: The longitudinal section of the anti-falling block (53) is semicircular.

8. The unidirectional prepreg machine hot melt coated fiber structure according to claim 6, characterized in that: The rotary positioning device (4) comprises a rotary worm wheel (41), a rotary worm (42), a rotating block (43) and a fixed seat (44); the fixed seat (44) is arranged on the inner side of the frame (1); the rotary worm (42) is rotatably connected in the fixed seat (44); one end of the rotary worm (42) passes through the fixed seat (44) and is connected to the rotating block; the rotary worm wheel (41) is coaxially arranged outside the upper rotating shaft (22); and the rotary worm wheel (41) is meshed with the rotary worm (42).

9. The unidirectional prepreg machine hot melt coated fiber structure according to claim 8, characterized in that: The upper coating portion (2) and the lower coating portion (3) have the same structure, and the upper coating portion (2) and the lower coating portion (3) are rotationally symmetrical in the height direction.

10. The unidirectional prepreg machine hot melt coated fiber structure according to claim 6, characterized in that: A collecting plate (34) is provided on the side surface of the lower coating portion (3) at the bottom of the upper coating groove, and the collecting plate (34) extends along the length direction of the lower coating portion (3).

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