Receiving device and electrostatic spinning equipment

Abstract

The utility model discloses a receiving device and electrostatic spinning equipment, the receiving device comprises a base, the base is rotatably connected with a first conveying roller and a second conveying roller, and a receiving belt is wound on the first conveying roller and the second conveying roller; the receiving device further comprises a separating device, the separating device comprises a first separating roller and a second separating roller, the receiving belt and the fiber membrane can pass through the space between the second conveying roller and the first separating roller, and the first separating roller and the second separating roller can enable the fiber membrane deposited on the receiving belt to be stripped from the receiving belt at the position of the first separating roller and bypass the second separating roller. The fiber membrane is wound around the second separation roller after being stripped, the separation angle is increased by winding the fiber membrane on the first separation roller and the second separation roller, meanwhile, the tension of the fiber membrane at the separation position can be increased, and the separation position of the fiber membrane can be more concentrated on the first separation roller under the action of the first separation roller, so that the stress is more uniform when the fiber membrane is stripped; and the separation position is more controllable, so that the fiber membrane is not easy to crack.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrospinning technical field, especially in kind receiving device and electrospinning equipment. BACKGROUND

[0002] Electrospinning refers to that polymer solution forms fiber filament or fine mist in electric field and deposits on receiving device to form fiber membrane. When fiber membrane is directly deposited on receiving belt of receiving device, fiber membrane needs to be peeled off from receiving belt.

[0003] The structural diagram of prior art receiving device is as shown in the figure, Figure 1 Receiving belt 01 is arranged on two conveying rollers 02, and output direction of fiber membrane 03 is parallel to conveying direction of receiving belt 01. Fiber membrane 03 is separated from receiving belt 01 along with the bending of receiving belt 01 around conveying roller 02. However, the peeling position of fiber membrane in this peeling structure is not easy to control, especially when the deposition thickness of fiber membrane is uneven. The separation position and stress of fiber membrane from receiving belt are not the same in width direction, which easily leads to the cracking of fiber membrane during peeling, affecting product quality. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of receiving device and electrospinning equipment, to solve the technical problem that receiving device in prior art easily leads to the cracking of fiber membrane during peeling.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of receiving device, including base, the first conveying roller and the second conveying roller are rotationally connected on the base, receiving belt is arranged on the first conveying roller and the second conveying roller, the receiving belt has receiving surface for receiving fiber, the second conveying roller is located on one side of the output direction of the receiving surface;

[0006] The receiving device further includes separation device, the separation device includes first separation roller and second separation roller, the first separation roller is located on one side of the second conveying roller at the receiving surface, the first separation roller and the second conveying roller are parallel to each other, the second conveying roller and the first separation roller can pass through the receiving belt and the fiber membrane deposited on the receiving belt, the second separation roller is located on one side of the first separation roller away from the second conveying roller, the first separation roller and the second separation roller can make the fiber membrane deposited on the receiving belt peel off the receiving belt at the position of the first separation roller and pass through the second separation roller.

[0007] The receiving device is provided with a separation device, the fiber membrane is deposited on the receiving surface of the receiving belt, the fiber membrane and the receiving belt pass between the second conveying roller and the first separation roller, the fiber membrane is stripped at the position of the first separation roller and then passes around the second separation roller, the fiber membrane wound on the first separation roller and the second separation roller increases the separation angle, and meanwhile the tension of the fiber membrane at the separation position can be increased, the separation position of the fiber membrane can be more concentrated on the first separation roller under the action of the first separation roller, so that the stress of the fiber membrane during stripping is more uniform, the separation position is more controllable, and the fiber membrane is less likely to be torn.

[0008] Preferably, the first separation roller and the second separation roller have a stripping angle a between the direction of stripping the fiber membrane and the receiving surface, 30°≤a≤150°.

[0009] When the stripping angle is in the range of 30°≤a≤150°, the stripping effect is better, and the fiber membrane is less likely to be torn.

[0010] Preferably, the receiving device further comprises an opening and closing driving mechanism, the opening and closing driving mechanism is in transmission connection with the first separation roller, and the opening and closing driving mechanism can drive the first separation roller to approach or move away from the second conveying roller.

[0011] Before starting formal spinning, the first separation roller is driven to move away from the second conveying roller by controlling the opening and closing driving mechanism, and then the spinning deposition effect is debugged, the waste liquid and waste membrane on the receiving belt during the debugging process can be conveniently observed and cleaned after the first separation roller moves away from the second conveying roller; after the spinning deposition effect is debugged, the first separation roller is controlled to approach the second conveying roller, and the fiber membrane is manually guided to the second separation roller, and then continuous production can be carried out.

[0012] Preferably, the base is fixedly connected with an insulating baffle, the insulating baffle is arranged on one side of the receiving belt on the receiving surface, the insulating baffle is arranged in an up-down interval with the receiving surface, the axis direction of the second conveying roller is taken as the left-right direction, the left and right sides of the receiving belt are both provided with the insulating baffle, and the insulating baffle extends to the inner side of the edge of the receiving belt in the left-right direction.

[0013] In the existing receiving system, the thickness of the deposited fiber membrane usually presents a phenomenon of being thick in the middle and thin on both sides, which affects the uniformity of stress during stripping. The insulating baffle of the present scheme extends to the inner side of the edge of the receiving belt and is arranged between the edge part of the receiving belt and the nozzle assembly of the electrospinning equipment. The arrangement of the insulating baffle can reduce the electric field intensity of the edge part of the receiving belt, so as to reduce the deposition of the fiber filaments formed on both sides to the edge part of the receiving belt, make the fiber filaments formed on both sides closer to the inner side, make the thickness of the deposited fiber membrane on both sides closer to the thickness in the middle, make the thickness of the fiber membrane more uniform, and further reduce the tearing of the fiber membrane.

[0014] Preferably, the surface of the receiving belt is provided with a release layer capable of reducing adhesion with the fiber membrane.

[0015] Preferably, the release layer is a silicone coating or a PTFE material, which has a good separation effect with the fiber membrane.

[0016] The utility model discloses a kind of electrospinning equipment with the above receiving device.

[0017] By using the above receiving device, the fiber membrane is more uniform when peeling, so that the fiber membrane is not easy to crack. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in these drawings without creative labor.

[0019] Figure 1 It is a structural schematic diagram of the existing receiving device.

[0020] Figure 2 It is a front view structural schematic diagram of the present utility model.

[0021] Figure 3 It is a side view structural schematic diagram of the present utility model.

[0022] In the drawings: 11-first conveying roller, 12-second conveying roller, 13-receiving belt, 131-receiving surface, 21-first separation roller, 22-second separation roller, 3-opening and closing driving mechanism, 4-insulating baffle, 5-fiber membrane, 6-nozzle assembly.

[0023] The implementation, functional characteristics and advantages of the present utility model will be further described with reference to the drawings. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, obviously, the described embodiments are only part of the embodiments of the present utility model, not all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present utility model.

[0025] It should be noted that if the embodiments of the utility model have directionality indication such as up, down, left, right, front, back and the like, the directionality indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture, if the specific posture changes, the directionality indication also changes accordingly.

[0026] In addition, if the embodiments of the utility model have the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the technical personnel in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0027] As shown in Figure 2 and Figure 3 A receiving device, comprising a base, a first conveying roller 11 and a second conveying roller 12 are rotatably connected on the base, a receiving belt 13 is wound on the first conveying roller 11 and the second conveying roller 12, the first conveying roller 11 or the second conveying roller 12 is driven to rotate by a motor, the receiving belt 13 has a receiving surface 131 for receiving fibers, the second conveying roller 12 is arranged on one side of the output direction of the receiving surface 131, and the first conveying roller 11 or the second conveying roller 12 is connected to the motor and driven to rotate. In the electrospinning process, there are at least two spinning directions of up spinning (upward deposition) and down spinning (downward deposition), and the down spinning is taken as an example in the embodiment, that is, the receiving device is arranged on the lower side of the nozzle assembly 6, the nozzle assembly 6 sprays the spinning solution, and then the spinning solution is deposited on the receiving belt 13 of the receiving device under the action of the electric field, and the receiving surface 131 is located on the upper side of the receiving belt 13.

[0028] The receiving device further comprises a separating device, the separating device comprises a first separating roller 21 and a second separating roller 22, the first separating roller 21 is arranged on one side of the second conveying roller 12 at the receiving surface 131, that is, the first separating roller 21 is arranged on the upper side of the second conveying roller 12, the first separating roller 21 and the second conveying roller 12 are parallel to each other, and the second conveying roller 12 and the first separating roller 21 can pass through the receiving belt 13 and the fiber film 5 deposited on the receiving belt 13, the second separating roller 22 is arranged on one side of the first separating roller 21 away from the second conveying roller 12, that is, the second separating roller 22 is arranged on the upper side of the first separating roller 21, and the first separating roller 21 and the second separating roller 22 can make the fiber film 5 deposited on the receiving belt 13 peel off the receiving belt 13 at the position of the first separating roller 21 and pass through the second separating roller 22. After the fiber film 5 passes through the second separating roller 22, it can be conveyed to the winding device to be wound into a roll.

[0029] This receiving device is equipped with a separation device. The fiber membrane 5 is deposited on the receiving surface 131 of the receiving belt 13. The fiber membrane 5 and the receiving belt 13 pass between the second conveying roller 12 and the first separation roller 21. After being peeled off at the position of the first separation roller 21, the fiber membrane 5 is wrapped upward around the second separation roller 22. The upward wrapping of the fiber membrane 5 around the first separation roller 21 and the second separation roller 22 increases the separation angle and can increase the tension of the fiber membrane 5 at the separation position. Under the action of the first separation roller 21, the separation position of the fiber membrane 5 can be more concentrated on the first separation roller 21, so that the force is more uniform when the fiber membrane 5 is peeled off, the peeling position is more controllable, and the fiber membrane 5 is less likely to crack.

[0030] In some specific embodiments, reference is made to Figure 2 The first separating roller 21 and the second separating roller 22 peel off the fiber membrane 5 at a peeling angle α between them and the receiving surface 131, where 30°≤α≤90°.

[0031] When the peeling angle is within the range of 30°≤α≤150°, the peeling effect is better, and the fiber membrane 5 is not easy to crack.

[0032] In some specific embodiments, the receiving device further includes an opening and closing drive mechanism 3, which is connected to the first separating roller 21 in a transmission manner. The opening and closing drive mechanism 3 can drive the first separating roller 21 to move closer to or away from the second conveying roller 12.

[0033] Before formal spinning begins, the opening and closing drive mechanism 3 is controlled to move the first separating roller 21 away from the second conveying roller 12. The spinning deposition effect is then adjusted. With the first separating roller 21 away from the second conveying roller 12, it is easier to observe and clean the waste liquid and waste film on the receiving belt 13 during the adjustment process. After the spinning deposition effect is adjusted and a qualified fiber film is formed, the first separating roller 21 is then controlled to move closer to the second conveying roller 12. The first separating roller 21 can approach or press against the fiber film and the receiving belt, guiding the fiber film 5 to the second separating roller 22, after which continuous production can begin. The opening and closing drive mechanism 3 can be a cylinder or a screw motor module, etc.

[0034] In some specific embodiments, reference is made to Figure 3 An insulating baffle 4 is fixedly connected to the base. The insulating baffle 4 is located on one side of the receiving surface 131 of the receiving belt 13. The insulating baffle 4 is arranged vertically and vertically with the receiving surface 131 at intervals. With the axis of the second conveying roller 12 as the left and right direction, the insulating baffle 4 is provided on both the left and right sides of the receiving belt 13. In the left and right direction, the insulating baffle 4 extends to the inner edge of the receiving belt 13.

[0035] In the existing receiving system, the fibers formed by the nozzles on both sides of the nozzle assembly 6 have a tendency to drift to both sides under the action of the electric field, and the entire width of the receiving belt 13 is basically deposited with the fiber film 5, so that the thickness of the fiber film 5 deposited on the receiving belt 13 usually presents a phenomenon of being thicker in the middle and thinner on both sides, which affects the uniformity of stress during peeling.

[0036] The insulating baffle 4 is suspended on the upper side of the receiving belt 13 and extends transversely to the inside of the edge of the receiving belt 13, does not affect the rotation of the receiving belt 13, and is arranged between the edge portion of the receiving belt 13 and the nozzle assembly 6 of the electrospinning device. The arrangement of the insulating baffle 4 can reduce the electric field intensity of the edge portion of the receiving belt 13, so as to reduce the deposition of the fiber filaments formed on both sides to the edge portion of the receiving belt 13, make the fiber filaments formed on both sides closer to the inside, make the thickness of the two sides of the deposited fiber film 5 closer to the thickness of the middle portion, make the thickness of the fiber film 5 more uniform, and further reduce the cracking of the fiber film 5. The insulating baffle 4 is preferably made of PE or PTFE material. The height interval of the insulating baffle from the receiving belt and the left and right length of the insulating baffle extending into the edge of the receiving belt can be adjusted according to the actual deposition effect of the fiber film.

[0037] In some specific embodiments, the surface of the receiving belt is provided with a release layer capable of reducing adhesion to the fiber film. The release layer is provided on the surface of the receiving belt, and when the fiber film is deposited on the release layer, the adhesion to the receiving belt can be reduced, the fiber film can be more easily separated from the receiving belt, and the cracking of the fiber film is further reduced.

[0038] Further, the release layer is a silicone coating or a PTFE material, which has a good separation effect with the fiber film.

[0039] On the other hand, an electrospinning device having the above receiving device. The electrospinning device further comprises a nozzle assembly 6 and an electric field generating device, the nozzle assembly 6 is opposite to the receiving surface 131 of the receiving belt 13, and the electric field generating device forms an electric field between the nozzle assembly 6 and the receiving belt 13.

[0040] By using the above receiving device, the stress of the fiber film 5 during peeling is more uniform, and the fiber film 5 is not easy to crack.

[0041] The above description is only the preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A receiving device, characterized by The receiving device comprises a base, a first conveying roller (11) and a second conveying roller (12) are rotatably connected to the base, a receiving belt (13) is wound around the first conveying roller (11) and the second conveying roller (12), the receiving belt (13) has a receiving surface (131) for receiving fibers, and the second conveying roller (12) is arranged on one side of the receiving surface (131) in the output direction. The receiving device further comprises a separating device, the separating device comprises a first separating roller (21) and a second separating roller (22), the first separating roller (21) is arranged on one side of the second conveying roller (12) in the receiving surface (131), the first separating roller (21) is parallel to the second conveying roller (12), the second conveying roller (12) and the first separating roller (21) can pass through the receiving belt (13) and the fiber film (5) deposited on the receiving belt (13), the second separating roller (22) is arranged on one side of the first separating roller (21) away from the second conveying roller (12), and the first separating roller (21) and the second separating roller (22) can cause the fiber film (5) deposited on the receiving belt (13) to be peeled off the receiving belt (13) upward at the position of the first separating roller (21) and bypass the second separating roller (22).

2. The receiving apparatus of claim 1, wherein The first separating roller (21) and the second separating roller (22) have a peeling angle α between the direction of peeling the fiber film (5) and the receiving surface (131), and 30°≤α≤150°.

3. The receiving apparatus of claim 1, wherein The receiving device further comprises an opening and closing driving mechanism (3), the opening and closing driving mechanism (3) is in transmission connection with the first separating roller (21), and the opening and closing driving mechanism (3) can drive the first separating roller (21) to approach or move away from the second conveying roller (12).

4. The receiving apparatus of claim 1, wherein The base is fixedly connected with an insulating baffle (4), the insulating baffle (4) is arranged on one side of the receiving belt (13) in the receiving surface (131), the insulating baffle (4) is arranged in an up-down interval with the receiving surface (131), the axis direction of the second conveying roller (12) is taken as the left-right direction, the left and right sides of the receiving belt (13) are both provided with the insulating baffle (4), and the insulating baffle (4) extends to the inside of the edge of the receiving belt (13) in the left-right direction.

5. The receiving apparatus of claim 1, wherein, The surface of the receiving belt (13) is provided with a release layer capable of reducing adhesion to the fiber film.

6. The receiving apparatus of claim 5, wherein, The release layer is an organic silicon coating or a PTFE material.

7. An electrospinning apparatus, characterized by, The receiving device comprises the receiving device according to any one of claims 1 to 6.

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