Electrostatic galling device for surface of plastic sheet

Abstract

The invention belongs to the technical field of electrostatic galling, and discloses a plastic sheet surface electrostatic galling device which comprises a workbench, a mounting plate fixedly connected to the top of the workbench through bolts, an air cylinder fixedly connected to the top of the mounting plate, and an electrode floating mechanism located at the top of the mounting plate, according to the device, through cooperation of structures such as the first high-voltage electrode and the second high-voltage electrode, the uniformity of a strong electric field borne by a plastic sheet is improved conveniently, the area of an electrostatic field is shortened through the two-section type design, segmented voltage is formed, and the efficiency is improved. And when the rotating plate swings in a reciprocating mode, the first high-voltage electrode and the second high-voltage electrode move close to or away from each other, the relatively concentrated strong electric field in the middle of each high-voltage electrode can independently move in a reciprocating mode near the plastic sheet, and the galling quality of the plastic sheet is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrostatic flocking, and specifically relates to an electrostatic flocking device for the surface of plastic sheets. Background Art

[0002] In order to improve the adhesion, wettability and other properties of the surface of plastic sheets and facilitate subsequent processing such as printing, coating or lamination, an electrostatic flocking device for the surface of plastic sheets is required. By accumulating static electricity, micro-discharges are generated at weak points on the sheet surface to melt or etch the material, forming a rough micro-pit structure, that is, the flocking effect.

[0003] At present, the existing electrostatic flocking devices for the surface of plastic sheets still have drawbacks in actual use: in the prior art, the high-voltage electrodes are usually arranged horizontally in a long strip shape above or below the plastic sheet. The sheet passes through the electrostatic field at a constant speed, and the flocking operation can be continuously completed. However, at the two ends of the high-voltage electrode, the electric field lines show a divergent trend, and the electric field strength also decays sharply accordingly. This makes the discharge phenomenon in this area extremely weak, or even almost ineffective. At the same time, the edge position of the plastic sheet is extremely easy to form a parasitic capacitance with the equipment frame (in a grounded state), and the charge will preferentially leak from the edge, thereby greatly weakening the electrostatic accumulation effect. Affected by the above factors, in actual flocking operations, the plastic sheet shows an uneven phenomenon where the middle part has good roughness while the edge has poor roughness. This uneven flocking effect seriously affects the overall quality of the plastic sheet and reduces the market competitiveness of the product. Therefore, in order to improve the quality and uniformity of the plastic sheet flocking operation, it is necessary to optimize the design of the existing electrostatic flocking device. Summary of the Invention

[0004] To solve the problem of good roughness in the middle and poor roughness at the edge of the plastic sheet flocking as mentioned in the above background art, the invention provides an electrostatic flocking device for the surface of plastic sheets.

[0005] To achieve the above object, the invention provides the following technical solution: An electrostatic flocking device for the surface of plastic sheets, including a workbench, the top of the workbench is fixedly connected with a mounting plate by bolts, and a cylinder is fixedly connected to the top of the mounting plate. It further includes:

[0006] An electrode floating mechanism, the electrode floating mechanism is located on the top of the mounting plate, and at least one guide roller is fixedly connected to the mounting plate and the electrode floating mechanism respectively;

[0007] A bilateral cooperation mechanism, the bilateral cooperation mechanism is connected to the electrode floating mechanism;

[0008] Among them, the electrode floating mechanism includes two pairs of high-voltage electrodes I and high-voltage electrodes II, and each pair of high-voltage electrodes I and high-voltage electrodes II are symmetrically distributed on the top of the mounting plate.

[0009] Preferably, the electrode floating mechanism further includes a top plate fixedly connected to the output end of the cylinder. A bottom plate is arranged directly below the top plate, and the bottom of the bottom plate is fixedly connected to the top of the mounting plate.

[0010] Preferably, the outer walls of the two pairs of the high-voltage electrode one and the high-voltage electrode two are respectively slidably connected to the mutually remote sides of the top plate and the bottom plate, and they are arranged oppositely.

[0011] Preferably, limiting grooves are respectively formed in the inner cavities of the bottom plate and the top plate. A first rack is fixedly connected to one side wall of each high-voltage electrode one, and a second rack is fixedly connected to each high-voltage electrode two through a bracket. The outer walls of the first rack and the second rack are respectively slidably connected in the limiting grooves.

[0012] Preferably, a gear is meshed between each first rack and the second rack, and they are arranged staggeredly on both sides of the gear. A pair of the gears are respectively rotatably connected to the bottom plate and the top plate through a rotating shaft.

[0013] Preferably, the bilateral cooperation mechanism includes a support frame fixedly connected to the middle of the mounting plate. A ball shaft and an electric push rod are respectively fixedly connected to the top of the support frame, and the support frame is rotatably connected to a rotating plate through the ball shaft.

[0014] Preferably, through holes are symmetrically formed at both ends of the rotating plate. The rotating plate is movably sleeved with ball columns through the through holes. One side of each ball column away from the rotating plate is fixedly connected to the end of the high-voltage electrode one.

[0015] Preferably, a groove is formed in the rotating plate near the middle. The output end of the electric push rod is fixedly connected with a T-shaped slider, and the T-shaped slider is slidably connected in the groove through a limiting convex block.

[0016] Preferably, the rotating plate is in an inclined state relative to the mounting plate, and both ends are telescopically arranged.

[0017] Preferably, the electrode floating mechanism is electrically connected to a step-up transformer, and the step-up transformer is electrically connected to a control cabinet.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] By setting the cooperation of structures such as the high-voltage electrode one and the high-voltage electrode two, the present invention facilitates the improvement of the uniformity of the strong electric field received by the plastic sheet. The two-stage design shortens the area of the electrostatic field, forms a segmented voltage, so that the electrostatic field in the middle of the plastic sheet will not be too concentrated. And when the rotating plate swings reciprocally, the high-voltage electrode one and the high-voltage electrode two respectively move closer to or away from each other. The relatively concentrated strong electric field in the middle of each high-voltage electrode can reciprocally move independently near the plastic sheet, so as to improve the uniformity of the strong electric field received by the plastic sheet and promote the hair-raising quality of the plastic sheet.

[0020] Through the cooperation of structures such as a rotating plate and a spherical column, the present invention facilitates the sufficiency of a plastic sheet receiving a strong electric field. The rotating plate is inclined, and the high-voltage electrodes on both sides of the rotating plate are distributed on the upper and lower sides of the plastic sheet and are arranged front and back. Since the plastic sheet passes through at a constant speed, some positions of the plastic sheet that passes first may not receive the strong electric field in time, and the coverage range of the strong electric field can be supplemented when it reaches the rear. At the same time, while the front-side electrodes are moving away from each other, the rear-side electrodes are moving closer to each other, enabling dynamic coverage of the strong electric field, ensuring the sufficiency of the plastic sheet receiving the strong electric field, and ensuring the continuous operation speed. Brief Description of the Drawings

[0021] Figure 1 is a schematic front-sectional structure diagram of the present invention;

[0022] Figure 2 is the present invention Figure 1 is a schematic diagram of the partial enlarged structure at A in the middle;

[0023] Figure 3 is a schematic three-dimensional structure diagram of the present invention;

[0024] Figure 4 is a schematic diagram of the structural cooperation relationship between the cylinder and the top plate of the present invention;

[0025] Figure 5 is a schematic diagram of the structural cooperation relationship between the rotating plate and the first high-voltage electrode of the present invention;

[0026] Figure 6 is a schematic diagram of the structural cooperation relationship between the first high-voltage electrode and the second high-voltage electrode of the present invention;

[0027] Figure 7 is a schematic diagram of the structural cooperation relationship between the first rack and the second rack of the present invention;

[0028] Figure 8 is a schematic top-sectional structure diagram of the present invention;

[0029] Figure 9 is a schematic diagram of the structural cooperation relationship between the rotating plate and the ball shaft of the present invention;

[0030] Figure 10 is a schematic diagram of the structural cooperation relationship between the rotating plate and the T-shaped slider of the present invention.

[0031] In the figure:

[0032] 1. Workbench; 2. Mounting plate; 3. Guide roller; 4. Cylinder; 5. Electrode floating mechanism; 51. High-voltage electrode 1; 52. Ball column; 53. Top plate; 54. Bottom plate; 55. High-voltage electrode 2; 56. Bracket; 57. Rack 2; 58. Gear; 59. Rack 1; 510. Limit groove; 6. Bilateral cooperation mechanism; 61. Support frame; 62. Rotating plate; 63. Ball shaft; 64. Electric push rod; 65. Hole groove; 66. Groove; 67. T-shaped slider; 7. Step-up transformer; 8. Control cabinet. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0034] As Figures 1 to 10 shown, the present invention provides an electrostatic flocking device for the surface of plastic sheets, including a workbench 1, the top of the workbench 1 is fixedly connected with a mounting plate 2 by bolts, the top of the mounting plate 2 is fixedly connected with a cylinder 4, and further includes:

[0035] An electrode floating mechanism 5, the electrode floating mechanism 5 is located at the top of the mounting plate 2, and at least one guide roller 3 is fixedly connected to the mounting plate 2 and the electrode floating mechanism 5 respectively;

[0036] A bilateral cooperation mechanism 6, the bilateral cooperation mechanism 6 is connected to the electrode floating mechanism 5;

[0037] Among them, the electrode floating mechanism 5 includes two pairs of high-voltage electrodes 1 (51) and high-voltage electrodes 2 (55), and each pair of high-voltage electrodes 1 (51) and high-voltage electrodes 2 (55) are symmetrically distributed on the top of the mounting plate 2; the electrode floating mechanism 5 is electrically connected to a step-up transformer 7, and the step-up transformer 7 is electrically connected to a control cabinet 8.

[0038] Adopting the above solution: The guide roller 3 is mainly composed of a horizontal roller rotatably connected in the middle of a pair of I-shaped frames, and is combined to make the plastic sheet move forward at a constant speed by using friction to perform a flow operation. It is a structure of the prior art and will not be elaborated here. According to the specific thickness and material type of the plastic sheet, the operator needs to accurately set the corresponding voltage parameters on the control interface of the control cabinet 8. The setting of this parameter is crucial and directly related to the strength and uniformity of the subsequent electrostatic field. After the setting is completed, turn on the power switch of the control cabinet 8 and the operation button of the step-up transformer 7 in sequence. As the equipment starts, the current flows in a specific circuit and undergoes a step-up process, and finally a stable and controllable electrostatic field is successfully generated in the area above the mounting plate 2.

[0039] As Figure 3 and Figure 4 shown, the electrode floating mechanism 5 further includes a top plate 53 fixedly connected to the output end of the cylinder 4. A bottom plate 54 is arranged directly below the top plate 53, and the bottom of the bottom plate 54 is fixedly connected to the top of the mounting plate 2. The outer walls of two pairs of the first high-voltage electrodes 51 and the second high-voltage electrodes 55 are respectively slidably connected to one side of the top plate 53 and the bottom plate 54 that are far away from each other, and the two are arranged oppositely.

[0040] With the above solution: By means of the telescopic function of the cylinder 4, the distance between the top plate 53 and the bottom plate 54 can be adjusted flexibly and precisely to meet the requirements for the electrostatic field distribution and action range under different process requirements, ensuring the smooth progress of the entire production or experimental process. When the control cabinet 8 and the step-up transformer 7 are turned on, the current is transmitted in the carefully designed circuit and undergoes step-up processing to form a strong electrostatic field above the mounting plate 2. At this time, the relatively arranged first high-voltage electrodes 51 and the second high-voltage electrodes 55, as the key components of the electrostatic field, play an important role in the electric field. They can guide and control the distribution of the electric field lines, making the electrostatic field more uniform and stable, providing a reliable electric field environment for the subsequent production or experimental process.

[0041] As Figures 6 to 8 shown, the inner cavities of the bottom plate 54 and the top plate 53 are both provided with limiting grooves 510. Rack one 59 is fixedly connected to the side walls of the first high-voltage electrodes 51, and rack two 57 is fixedly connected to the second high-voltage electrodes 55 through brackets 56. The outer walls of the rack one 59 and the rack two 57 are both slidably connected to the limiting grooves 510. A gear 58 is commonly engaged between the rack one 59 and the rack two 57, and the two are arranged staggeredly on both sides of the gear 58. One pair of the gears 58 are respectively rotatably connected to the bottom plate 54 and the top plate 53 through rotating shafts.

[0042] Adopting the above solution: When the first high-voltage electrode 51 is axially moved by the ball column 52, the first rack 59 fixedly connected to the first high-voltage electrode 51 moves synchronously therewith, pulling the gear 58 to start rotating. The second rack 57 on the other side of the gear 58 is axially moved precisely in the direction close to the first high-voltage electrode 51 under the drive of the rotation of the gear 58. The second rack 57 is closely matched with the bracket 56, and the bracket 56 efficiently and stably transmits the movement energy of the second rack 57 to the second high-voltage electrode 55, enabling the second high-voltage electrode 55 to move in the same direction as the first high-voltage electrode 51. This design of moving closer to each other can flexibly adjust the distance between the high-voltage electrodes to meet different process requirements. For example, when precise electric field treatment of materials is required, by adjusting the electrode distance, the electric field intensity and distribution can be precisely controlled, thereby improving the treatment effect and product quality. At the same time, this mechanical linkage method has a simple structure, convenient operation, reduces the maintenance cost and operation difficulty of the equipment, improves the production efficiency, and brings higher economic benefits to industrial production.

[0043] As Figure 6 and Figure 9 As shown, the bilateral cooperative mechanism 6 includes a support frame 61 fixedly connected to the middle of the mounting plate 2. The top of the support frame 61 is fixedly connected with a ball shaft 63 and an electric push rod 64 respectively. The support frame 61 is rotationally connected with a rotating plate 62 through the ball shaft 63; both ends of the rotating plate 62 are symmetrically provided with hole grooves 65, and the rotating plate 62 is movably sleeved with ball columns 52 through the hole grooves 65 respectively. One sides of the ball columns 52 far away from the rotating plate 62 are fixedly connected to the ends of the first high-voltage electrode 51.

[0044] Adopting the above solution: Since the middle of the rotating plate 62 is rotationally connected through the ball shaft 63, under the action of the lever principle, a swinging effect of opposite movements occurs on both sides of the rotating plate 62. When it is necessary to realize the conveying or transfer of materials in different directions, by controlling the stroke and frequency of the electric push rod 64, the rotating plate 62 can swing at different angles and amplitudes, thus meeting diverse process requirements, greatly enhancing the adaptability and versatility of the equipment, and reducing the time and cost investment brought about by replacing equipment or carrying out large-scale transformation.

[0045] As Figure 10 As shown, a groove 66 is provided near the middle of the rotating plate 62. The output end of the electric push rod 64 is fixedly connected with a T-shaped slider 67, and the T-shaped slider 67 is slidably connected in the groove 66 through a limiting convex block; the rotating plate 62 is inclined relative to the mounting plate 2, and both ends are telescopically arranged.

[0046] The above scheme is adopted: the rotating plate 62 is mainly composed of inner and outer rods and a reset spring. When the cylinder 4 pushes the top plate 53 up and down to adjust the spacing, the rotating plate 62 can be adaptively extended and retracted. The adaptive extension function of the rotating plate 62 enables it to automatically adjust its own length according to the position change of the top plate 53. Whether the top plate 53 moves upward to expand the spacing or moves downward to reduce the spacing, the rotating plate 62 can perfectly cooperate with it, ensuring that the overall equipment is reasonably arranged in a limited space, improving space utilization, and avoiding equipment installation difficulties or operation restrictions caused by insufficient space. When the electric push rod 64 is started, the rotating plate 62 is reciprocated by the T-shaped slider 67, and the T-shaped slider 67 slides through the limit protrusion. Connected in the groove 66, the T-shaped slider 67 is slidably connected to the groove 66, providing a precise guide path for the reciprocating motion of the rotating plate 62. This design ensures that the rotating plate 62 always moves along a predetermined trajectory during the movement, avoiding motion errors caused by offset or shaking. The design of the limiting protrusion further enhances the connection stability between the slider and the groove, so that the rotating plate 62 can be quickly and accurately positioned at the desired position when the movement stops, thereby improving the positioning accuracy and repeatability of the equipment. Driven by the electric push rod 64, the T-shaped slider 67 can drive the rotating plate 62 to achieve flexible reciprocating motion, meeting the swing amplitude requirements of the rotating plate 62 under different diameters of the plastic sheet.

[0047] The working principle and use process of the present invention:

[0048] First, when electrostatic roughening is performed on the plastic sheet, it is necessary to accurately set appropriate voltage parameters on the control cabinet 8 according to the thickness and type of the plastic sheet. After completing the voltage setting, the control cabinet 8 and the step-up transformer 7 are turned on in turn. At this time, an electrostatic field of a specific intensity will be formed on the mounting plate 2, providing the necessary electric field conditions for the subsequent roughening operation. In order to ensure that the plastic sheet can pass through the electrostatic field in a stable and uniform state, the cylinder 4 is used to finely adjust the distance between the top plate 53 and the bottom plate 54. Under the guidance of the guide roller 3, the plastic sheet passes through the electrostatic field area at a uniform speed. In this process, the electric field effect on various parts of the sheet surface is relatively consistent, which helps to achieve a uniform roughening effect. At the same time, the electric push rod 64 is started, and the electric push rod 64 pushes the T-shaped slider 67 to reciprocate. Since the middle part of the rotating plate 62 is connected to the rotation by the ball shaft 63, under the ingenious effect of the lever principle, the two sides of the rotating plate 62 will produce a swinging effect in opposite directions. This swing is transmitted through the connection of the ball column 52, so that a pair of high-voltage electrodes 51 move in opposite directions at the same time. Figure 6For example, when the high-voltage electrode 1 51 in zone ① is pushed to move in the direction of the arrow, the rack 1 59 fixed thereto moves accordingly, thereby pulling the gear 58 to rotate. Under the strict limiting effect of the limiting groove 510, the rack 2 57 located on the other side of the gear 58 is driven to make axial movement toward the direction close to the high-voltage electrode 1 51, and the rack 2 57 drives the high-voltage electrode 2 55 in the same direction through the bracket 56, so that the pair of high-voltage electrodes 1 51 and high-voltage electrode 2 55 move closer to each other, and the high-voltage electrode 1 51 in zone ② is pulled by the ball shaft 63. Figure 6 The first high voltage electrode 51 and the second high voltage electrode 55 move in the opposite direction as indicated by the arrow, and the second high voltage electrode 55 is linked according to the same principle, and finally the first high voltage electrode 51 and the second high voltage electrode 55 move away from each other, realizing the precise adjustment of the position and spacing of the high voltage electrodes, thereby optimizing the electrostatic field distribution;

[0049] Secondly, when the rotating plate 62 swings back and forth, the high-voltage electrode 1 51 and the high-voltage electrode 2 55 in the ① and ② zones move toward or away from each other, and the two-stage design shortens the electrostatic field area, so that the electrostatic field in the middle of the plastic sheet will not be too concentrated. In the ① zone, the high-voltage electrode 1 51 performs independent axial reciprocating motion, and the relatively concentrated strong electric field in the middle can reciprocate under the plastic sheet. Similarly, the high-voltage electrode 2 55 independently reciprocates on the other half of the plastic sheet, thereby improving the uniformity of the strong electric field on the plastic sheet and promoting the roughening quality of the plastic sheet.

[0050] Again, the inclined rotating plate 62 can make the high-voltage electrode 1 51 and the high-voltage electrode 2 55 in zones ① and ② respectively located on the upper and lower sides of the plastic sheet, and arranged front and back, and the two sides act synergistically on the plastic sheet. Since the plastic sheet passes through at a uniform speed, some positions of the plastic sheet that first passes through zone ① may not receive the strong electric field in time. When it reaches zone ②, the strong electric field coverage can be supplemented to achieve dynamic coverage of the strong electric field, ensuring that the plastic sheet can fully receive the strong electric field, thereby increasing the feeding speed of the plastic sheet.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrostatic flocking device for the surface of a plastic sheet, comprising a workbench (1), wherein a mounting plate (2) is fixedly connected to the top of the workbench (1) by bolts, and a cylinder (4) is fixedly connected to the top of the mounting plate (2), characterized in that: It further includes: An electrode floating mechanism (5), the electrode floating mechanism (5) is located on the top of the mounting plate (2), and at least one guide roller (3) is fixedly connected to the mounting plate (2) and the electrode floating mechanism (5) respectively; A bilateral cooperation mechanism (6), the bilateral cooperation mechanism (6) is connected to the electrode floating mechanism (5); Wherein, the electrode floating mechanism (5) includes two pairs of high-voltage electrodes one (51) and high-voltage electrodes two (55), and each pair of high-voltage electrodes one (51) and high-voltage electrodes two (55) are symmetrically distributed on the top of the mounting plate (2).

2. The electrostatic flocking device for the surface of a plastic sheet according to claim 1, characterized in that: The electrode floating mechanism (5) further includes a top plate (53) fixedly connected to the output end of the cylinder (4), a bottom plate (54) is arranged directly below the top plate (53), and the bottom of the bottom plate (54) is fixedly connected to the top of the mounting plate (2).

3. The electrostatic flocking device for the surface of plastic sheets according to claim 2, wherein: The outer walls of the two pairs of high-voltage electrodes one (51) and high-voltage electrodes two (55) are respectively slidably connected to the mutually remote sides of the top plate (53) and the bottom plate (54), and the two are arranged oppositely.

4. The electrostatic flocking device for the surface of plastic sheet according to claim 3, characterized in that: Limit slots (510) are opened in the inner cavities of the bottom plate (54) and the top plate (53), racks one (59) are fixedly connected to the side walls of the high-voltage electrodes one (51), and racks two (57) are fixedly connected to the high-voltage electrodes two (55) through brackets (56), and the outer walls of the racks one (59) and the racks two (57) are slidably connected in the limit slots (510).

5. The electrostatic flocking device for the surface of a plastic sheet according to claim 4, characterized in that: Gears (58) are commonly engaged between the racks one (59) and the racks two (57), and the two are arranged staggeredly on both sides of the gear (58), and a pair of gears (58) are respectively rotatably connected to the bottom plate (54) and the top plate (53) through rotating shafts.

6. The electrostatic flocking device for the surface of plastic sheets according to claim 1, wherein: The bilateral cooperation mechanism (6) includes a support frame (61) fixedly connected to the middle of the mounting plate (2), a ball shaft (63) and an electric push rod (64) are respectively fixedly connected to the top of the support frame (61), and the support frame (61) is rotatably connected to a rotating plate (62) through the ball shaft (63).

7. The electrostatic flocking device for the plastic sheet surface according to claim 6, characterized in that: Hole slots (65) are symmetrically opened at both ends of the rotating plate (62), the rotating plate (62) is movably sleeved with ball columns (52) through the hole slots (65), and the sides of the ball columns (52) away from the rotating plate (62) are fixedly connected to the ends of the high-voltage electrodes one (51).

8. The electrostatic flocking device for the surface of the plastic sheet according to claim 6, characterized in that: A groove (66) is opened near the middle of the rotating plate (62), the output end of the electric push rod (64) is fixedly connected with a T-shaped slider (67), and the T-shaped slider (67) is slidably connected in the groove (66) through a limit convex block.

9. The surface electrostatic flocking device for plastic sheets according to claim 6, characterized in that: The rotating plate (62) is in an inclined state relative to the mounting plate (2), and both ends are telescopically arranged.

10. The electrostatic flocking device for the plastic sheet surface according to claim 1, wherein: The electrode floating mechanism (5) is electrically connected to a step-up transformer (7), and the step-up transformer (7) is electrically connected to a control cabinet (8).

Images