Pressure-maintaining buffer screen wiping head

Abstract

The utility model relates to a pressure-maintaining buffering screen wiping head which comprises a wiping carrier, a pressure-maintaining buffering device and a pressure-maintaining buffering device. The pressure maintaining and buffering device is arranged on the wiping carrier in a sliding mode and used for releasing instantaneous pressure borne by the screen printing plate during wiping; and the wiping head is arranged above the pressure maintaining and buffering device and used for supporting the non-woven fabric so that the non-woven fabric can make contact with the wiping face of the screen printing plate. When the wiping head is pressed during working, instantaneous pressure can be released in a short time, mechanical hard contact is avoided, relative pressure is kept while buffering is given, and the phenomenon that the screen is broken due to hard contact between the wiping head and the screen is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of screen cleaning, in particular to a pressure-holding and buffering screen wiping head. Background Art

[0002] In the production process of solar cells, the grid lines on the cells are a key process. At present, the grid lines are printed on the cells with silver paste through screen printing technology. When the screen is blocked during printing, resulting in broken grids, manual wiping is required at this time. The wiping time interval is generally 15 - 30 minutes. Manual wiping has certain safety hazards and the equipment cannot operate without people. Moreover, when the screen is on a plane parallel to the horizontal plane, after the screen is pressed, it is prone to deformation. With the same force pressing the screen, the deformation amount at the central part of the screen is greater than that at the edge of the screen. If the wiping pressing force is too large, the screen will be damaged. Therefore, the movement of the wiping head is usually controlled on the screen wiping equipment to ensure the normal progress of screen wiping. However, the mechanical induction stroke of the weighing system on the traditional screen wiping equipment is short, and there is no up-and-down undulating buffer, resulting in fluctuating measurement values that cannot accurately control the movement of the wiping head. At the same time, after exceeding the stroke range, it is prone to extreme extrusion, which may cause damage to the equipment after hard contact. Summary of the Utility Model

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the problems in the prior art that the induction stroke of the weighing system is short during the wiping process and the undulating lines of the fluctuations are rapid, and to provide a pressure-holding and buffering screen wiping head. When the wiping head is working under pressure, it can release the instantaneous pressure in a short time to avoid mechanical hard contact, maintain the relative pressure while giving a buffer, and avoid the screen being punctured due to hard contact between the wiping head and the screen.

[0004] To solve the above technical problem, the utility model provides a pressure-holding and buffering screen wiping head, comprising:

[0005] A wiping carrier, which is arranged on the solar cell screen wiping device;

[0006] A pressure-holding and buffering device, which is slidably arranged on the wiping carrier and is used to release the instantaneous pressure during screen wiping;

[0007] A wiping head, which is arranged above the pressure-holding and buffering device and is used to support the non-woven fabric to achieve contact between the non-woven fabric and the wiping surface of the screen;

[0008] A weighing sensor, which is arranged on a weighing carrier and is located below the pressure-holding and buffering device and is used to measure and sense the pressure data of the wiping head.

[0009] In an embodiment of the utility model, the wiping carrier is slidably connected with the weighing carrier.

[0010] In an embodiment of the present utility model, a first linear slide rail is provided on the wiping carrier, and a first buffer slide table adapted to the first linear slide rail is provided on the weighing carrier.

[0011] In an embodiment of the present utility model, the wiping head includes a steel ball seat, steel balls, and a wiping head seat. The steel ball seat is disposed above the pressure-holding buffer device and is fixed by an adjusting bolt; the steel balls are disposed at the bottom of the steel ball seat, and the wiping head seat is fixedly disposed above the steel ball seat;

[0012] In an embodiment of the present utility model, a silica gel layer and a sheepskin layer are provided on the surface of the wiping head seat, and the sheepskin layer is disposed on the surface of the silica gel layer.

[0013] In an embodiment of the present utility model, the pressure-holding buffer device includes a downward pressure buffer mechanism and a guiding mounting seat. The guiding mounting seat is disposed above the downward pressure buffer mechanism, and the guiding mounting seat is slidably connected to the wiping carrier.

[0014] In an embodiment of the present utility model, the downward pressure buffer mechanism includes a fixed base, a spring, and an upper sleeve. The bottom end of the spring is connected to the fixed base, the top end of the spring is connected to the upper sleeve, and the guiding mounting seat is disposed outside the upper sleeve.

[0015] In an embodiment of the present utility model, second linear slide rails are disposed on both sides of the guiding mounting seat, and a second buffer slide table adapted to the second linear slide rails is provided on the wiping carrier.

[0016] In an embodiment of the present utility model, an arc-shaped groove adapted to the steel balls is provided at the center position of the top of the guiding mounting seat.

[0017] The above technical solution of the present utility model has the following beneficial effects compared with the prior art:

[0018] (1) The pressure-holding buffer screen wiping head of the present utility model is applied to a solar cell screen wiping device. When the wiping head is working under pressure, the pressure-holding buffer device drives the wiping head to make a floating up and down movement. At the same time, the wiping carrier as a whole has a tendency to move downward, which can release the instantaneous pressure in a short time, avoid mechanical hard contact, maintain the relative pressure while giving buffering, and avoid the screen being punctured due to the hard contact between the wiping head and the screen.

[0019] (2) The wiping head imitates the softness of the human finger and at the same time ensures a certain frictional force. When wiping the screen, it can ensure that the non-woven fabric does not move, which conforms to human ergonomics. The wiping surface is in contact with the screen plane, and universal adjustment is achieved by adjusting the adjusting bolts around the steel balls to ensure that the wiping surface can be completely in contact with the surface of the screen.

[0020] (3) When the wiping head is pressed, the weighing carrier can follow the micro-deformation of the first linear slide rail and move in a follow-up manner. The weighing sensor measures the pressed data, and the feedback system achieves the purpose of constant pressure control through the precise movement of the weighing carrier. It can effectively solve the problems of short induction stroke and rapid undulation of the weighing system during the wiping process, avoid mechanical hard contact, maintain the relative pressure while giving buffering, and enable the weighing system to measure stably. Description of the Drawings

[0021] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model in conjunction with the drawings, wherein

[0022] Figure 1 is a schematic structural diagram of the pressure-holding and buffering screen printing head in the preferred embodiment of the present utility model;

[0023] Figure 2 is Figure 1 a schematic cross-sectional structural diagram of the pressure-holding and buffering screen printing head shown;

[0024] Figure 3 is Figure 1 a schematic partial structural diagram of the pressure-holding and buffering device of the pressure-holding and buffering screen printing head shown;

[0025] Figure 4 is a schematic structural diagram of the non-woven fabric installed on the unwinding roller and the winding roller in the present utility model;

[0026] Figure 5 is Figure 4 a schematic structural diagram from another angle;

[0027] Explanation of the reference numerals in the drawings: 1, wiping carrier; 2, pressure-holding and buffering device; 211, fixed base; 212, spring; 213, upper sleeve; 214, guiding mounting seat; 3, wiping head; 4, weighing sensor; 5, weighing carrier; 6, first linear slide rail; 7, first buffer slide; 8, second linear slide rail; 9, second buffer slide; 10, non-woven fabric unwinding roller; 11, winding roller; 12, fixing plate; 21, downward pressure buffering mechanism; 22, guiding mounting seat; 31, steel ball clamp seat; 32, steel ball; 33, wiping head seat; 34, silica gel layer; 35, sheepskin layer; 100, non-woven fabric. Detailed Embodiments

[0028] The following further illustrates the present utility model in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and implement it, but the examples given do not limit the present utility model.

[0029] Refer to Figure 1-2As shown in the figure, a pressure-holding and buffer screen plate wiping head of the present utility model includes: a wiping carrier 1; a pressure-holding and buffer device 2 slidably arranged on the wiping carrier 1 for releasing the instantaneous pressure during screen plate wiping; a wiping head 3 arranged above the pressure-holding and buffer device 2 for supporting the non-woven fabric 100 to achieve contact between the non-woven fabric 100 and the wiping surface of the screen plate. It further includes a weighing sensor 4, and the weighing sensor 4 is arranged on a weighing carrier 5 and is located below the pressure-holding and buffer device 2. The wiping carrier 1 is slidably connected to the weighing carrier 5; a first linear slide rail 6 is arranged on the wiping carrier 1, and a first buffer slide table 7 adapted to the first linear slide rail 6 is arranged on the weighing carrier 5.

[0030] Furthermore, the wiping head 3 includes a steel ball seat 31, steel balls 32 and a wiping head seat 33. The steel ball seat 31 is arranged above the pressure-holding and buffer device 2 and is fixed by adjusting bolts; the steel balls 32 are arranged at the bottom of the steel ball seat 31, and the wiping head seat 33 is fixedly arranged above the steel ball seat 31; in addition, a silica gel layer 34 and a sheepskin layer 35 are arranged on the surface of the wiping head seat 33, and the sheepskin layer 35 is arranged on the surface of the silica gel layer 34. The wiping head 3 imitates the softness of a human finger and at the same time ensures a certain frictional force. When wiping the screen plate, it can ensure that the non-woven fabric 100 does not move, conforms to human ergonomics, the wiping surface of the wiping head 3 is in contact with the screen plate plane, and universal adjustment can be realized by adjusting the adjustment bolts around the steel balls 32 to ensure that the wiping surface is in full contact with the surface of the screen plate.

[0031] As Figure 3 As shown in the figure, the pressure-holding and buffer device 2 includes a downward pressure buffer mechanism 21 and a guiding and mounting seat 22. The guiding and mounting seat 22 is arranged above the downward pressure buffer mechanism 21, and the guiding and mounting seat 22 is slidably connected to the wiping carrier 1. The downward pressure buffer mechanism 21 includes a fixed base 211, a spring 212 and an upper sleeve 213. The bottom end of the spring 212 is connected to the fixed base 211, the top end of the spring 212 is connected to the upper sleeve 213, and the guiding and mounting seat 22 is arranged outside the upper sleeve 213.

[0032] In this embodiment, second linear slide rails 8 are arranged on both sides of the guiding and mounting seat 22, and second buffer slide tables 9 adapted to the second linear slide rails 8 are arranged on the wiping carrier 1. Specifically, the second buffer slide tables 9 are vertically arranged on the wiping carrier 1 through fixing plates 12. When the wiping head 3 is pressed down, the spring 212 is compressed for buffering, and the second buffer slide tables 9 make up-and-down floating movements, which can avoid hard contact between the wiping head 3 and the screen plate and prevent the screen plate from being punctured.

[0033] Furthermore, an arc-shaped groove adapted to the steel balls 32 is arranged at the center position of the top of the guiding and mounting seat 24.

[0034] In this embodiment, a non-woven fabric feeding roller 10 and a non-woven fabric winding roller 11 are respectively arranged at two ends of the wiping carrier 1, and the non-woven fabric winding roller 11 is driven to rotate by a motor. When the winding roller 11 rotates, it pulls the non-woven fabric 100 to move on the wiping head 3, and the regular replacement of the non-woven fabric 100 can be realized.

[0035] As above Figure 4 and 5 As shown above, the non-woven fabric 100 is installed above the wiping head 3. When the wiping head 3 works under pressure, the pressure maintaining and buffering device 2 releases the instantaneous pressure in a short time to avoid the screen printing plate being broken by hard contact. The weighing carrier 5 can follow the micro-deformation of the first linear slide rail 6 and move accordingly. The weighing sensor 4 measures the pressure data, and the feedback system achieves the purpose of constant pressure control through the precise movement of the weighing carrier 5, which can effectively solve the problems of short induction stroke of the weighing system and rapid undulation of the fluctuating lines during the wiping process, avoid mechanical hard contact, maintain the relative pressure while giving buffering, and enable the weighing system to measure stably.

[0036] In this embodiment, the main body of the weighing carrier 5 is made of 6061-T6 aluminum alloy, which can ensure that the overall weight is light and the response is sensitive.

[0037] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A pressure-holding and buffering screen wiping head, characterized in that: Comprising: A wiping carrier, installed on a screen wiping device for solar cells; A pressure-holding buffer device, slidably arranged on the wiping carrier, for releasing the instantaneous pressure during screen wiping; A wiping head, arranged above the pressure-holding buffer device for supporting a non-woven fabric to achieve contact between the non-woven fabric and the wiping surface of the screen.

2. The pressure-holding and buffering screen wiping head according to claim 1, wherein: It further includes a weighing sensor, which is arranged on a weighing carrier and located below the pressure-holding buffer device for measuring and sensing the pressure data of the wiping head.

3. The pressure-holding and buffer screen wiping head according to claim 2, characterized in that: The wiping carrier is slidably connected to the weighing carrier; a first linear slide rail is arranged on the wiping carrier, and a first buffer slide table adapted to the first linear slide rail is arranged on the weighing carrier.

4. The pressure-holding and buffering screen wiping head according to claim 1, characterized in that: The wiping head includes a steel ball seat, steel balls and a wiping head seat. The steel ball seat is arranged above the pressure-holding buffer device and fixed by an adjusting bolt; the steel balls are arranged at the bottom of the steel ball seat, and the wiping head seat is fixedly arranged above the steel ball seat.

5. The pressure-holding and buffering screen wiping head according to claim 4, wherein: The surface of the wiping head seat is provided with a silica gel layer and a sheepskin layer, and the sheepskin layer is arranged on the surface of the silica gel layer.

6. The pressure-holding and buffering screen wiping head according to claim 5, wherein: The pressure-holding buffer device includes a downward pressure buffer mechanism and a guiding mounting seat. The guiding mounting seat is arranged above the downward pressure buffer mechanism, and the guiding mounting seat is slidably connected to the wiping carrier.

7. The pressure-holding and buffer screen wiping head according to claim 6, characterized in that: The downward pressure buffer mechanism includes a fixed base, a spring and an upper sleeve. The bottom end of the spring is connected to the fixed base, the top end of the spring is connected to the upper sleeve, and the guiding mounting seat is arranged outside the upper sleeve.

8. The pressure-holding and buffer screen wiping head according to claim 6, characterized in that: Second linear slide rails are arranged on both sides of the guiding mounting seat, and second buffer slide tables adapted to the second linear slide rails are arranged on the wiping carrier.

9. The pressure-holding and buffering screen wiping head according to claim 8, wherein: An arc-shaped groove adapted to the steel balls is arranged at the center position of the top of the guiding mounting seat.

10. A pressure-holding and buffering screen wiping head according to claim 1, characterized in that: A non-woven fabric feeding roller and a non-woven fabric winding roller are respectively arranged at both ends of the wiping carrier, and the non-woven fabric winding roller is driven to rotate by a motor.

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