Steel mesh wiping device and steel mesh printing equipment

Abstract

The utility model belongs to the technical field of solder paste printing equipment, and particularly relates to a steel mesh wiping device and steel mesh printing equipment, the steel mesh wiping device comprises a supporting seat, a feeding roller, a receiving roller, a receiving driving part, a moving driving part, an adsorption box and a sprayer; the discharging roller and the collecting roller are both rotationally installed on the supporting base, the collecting driving piece and the adsorption box are both installed on the supporting base, and the collecting driving piece is connected with the collecting roller. The wiping piece released by the discharging roller is adsorbed by the adsorption box and then is wound on the receiving roller; the material moving driving part is installed on the supporting base, connected with the sprayer and used for driving the sprayer to move in the axial direction of the discharging roller so that the sprayer can spray the cleaning agent to the wiping part. According to the steel mesh cleaning device, the steel mesh is wiped after the cleaning agent is adhered to the wiping piece, so that the cleanliness of the wiped steel mesh is guaranteed; the steel mesh wiping device is simple in structure, high in wiping efficiency and low in manufacturing cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of solder paste printing equipment, and in particular relates to a stencil wiping device and stencil printing equipment. Background Technology

[0002] Circuit boards are core components in electronic products. As electronic products become smaller and more precise, circuit board production is usually accomplished using surface mount technology (SMT). The first step in circuit board production is printing solder paste onto the circuit board, which is usually done automatically using a solder paste printer.

[0003] Solder paste printing machines typically include a stencil conveyor, a squeegee, and a circuit board conveyor. The stencil conveyor transports the circuit board, the stencil itself is transported, and the squeegee scrapes the solder paste from the stencil onto the circuit board, thus completing the solder paste printing process. During the process of the squeegee scraping the solder paste from the stencil onto the circuit board, some solder paste remains on the bottom surface of the stencil. If this residual solder paste is not removed, it will affect the solder paste printing quality of the next circuit board.

[0004] In the existing technology, the solder paste remaining at the bottom of the stencil is usually cleaned manually on a regular basis. However, the method of manually cleaning the solder paste at the bottom of the stencil has technical problems such as low work efficiency, inconvenience and high cleaning cost. Although some solder paste printing machines are also equipped with stencil cleaning devices, the existing stencil cleaning devices usually use brushes to remove the solder paste at the bottom of the stencil, which has the technical problem of not cleaning it thoroughly. Summary of the Invention

[0005] This utility model provides a stencil wiping device and a stencil printing equipment to solve the technical problems in the prior art, such as incomplete cleaning of solder paste on the bottom of the stencil by existing stencil cleaning devices.

[0006] One embodiment of this utility model provides a steel mesh wiping device, including a support base, a feeding roller, a receiving roller, a receiving drive component, a transferring drive component, an adsorption box, and a sprayer; the feeding roller and the receiving roller are both rotatably mounted on the support base, the receiving drive component and the adsorption box are both mounted on the support base, and the receiving drive component is connected to the receiving roller; the wiping component released by the feeding roller is adsorbed by the adsorption box and then wrapped around the receiving roller;

[0007] The material transfer drive is mounted on the support and connected to the sprayer, and is used to drive the sprayer to move axially along the discharge roller so that the sprayer sprays cleaning agent onto the wiping component.

[0008] Optionally, the steel mesh wiping device further includes a lifting drive component mounted on the support base, and the adsorption box is mounted on the output end of the lifting drive component; the lifting drive component is used to drive the adsorption box to rise and fall, so that the adsorption box drives the wiping component thereon to abut against the steel mesh to be wiped.

[0009] Optionally, the adsorption box is provided with adsorption holes and flexible protrusions extending along the axial direction of the feeding roller, and the adsorption holes are used to adsorb the wiping piece onto the flexible protrusions.

[0010] Optionally, the steel mesh wiping device further includes a guide roller rotatably mounted on the support base, wherein the wiping element released by the feeding roller bypasses the guide roller and is adsorbed by the adsorption box and then wrapped around the receiving roller.

[0011] Optionally, the steel mesh wiping device further includes a sensor mounted on the support base and an identifier sleeved on the guide roller. The identifier has a plurality of spaced-apart concave teeth, some of which are inserted into the sensing groove of the sensor.

[0012] Optionally, the steel mesh wiping device further includes a support frame, a slider, and a guide rail. The guide rail is mounted on the support base along the axial direction of the feeding roller. The support frame is slidably mounted on the guide rail via the slider, and the sprayer is mounted on the support frame.

[0013] Optionally, the support base is provided with a through groove extending along the axial direction of the feeding roller, and the guide rail is mounted on the side wall of the through groove.

[0014] Optionally, the material transfer drive includes a motor, a belt clamp, a first pulley, a second pulley, and a belt wound between the first pulley and the second pulley. The first pulley and the second pulley are rotatably mounted on the support base at intervals. The motor is mounted on the support base and connected to the first pulley. The belt is connected to the support frame through the belt clamp.

[0015] Optionally, the steel mesh wiping device further includes a limiting block installed on the support base and a ratchet sleeved on the feeding roller. The ratchet is provided with helical teeth, and the limiting block is provided with limiting teeth inserted into the helical teeth. The limiting block is used to prevent the feeding roller from reversing through the ratchet.

[0016] Another embodiment of this utility model provides a stencil printing device, including the stencil wiping device described above.

[0017] In this invention, the wiping component released by the feeding roller is adsorbed by the adsorption box and then wrapped around the receiving roller; the material transfer drive is mounted on the support base and connected to the sprayer, and is used to drive the sprayer to move axially along the feeding roller so that the sprayer sprays cleaning agent onto the wiping component; specifically, the material transfer drive drives the sprayer to move laterally, and the sprayer sprays cleaning agent onto the wiping component in front of the adsorption box; the material receiving drive drives the receiving roller to rotate, and the receiving roller moves the wiping component with cleaning agent adhering to it to the top of the adsorption box; the wiping component above the adsorption box contacts the bottom surface of the stencil to be wiped; the stencil to be wiped or the stencil wiping device moves, so that the wiping component above the adsorption box can wipe away the solder paste on the bottom surface of the stencil to be wiped. In this invention, the wiping component is coated with cleaning agent before wiping the steel mesh, ensuring the cleanliness of the steel mesh after wiping; moreover, the steel mesh wiping device has a simple structure, high wiping efficiency, and low manufacturing cost. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a steel mesh wiping device provided in one embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 This is a structural schematic diagram of the steel mesh wiping device provided in one embodiment of the present invention from another perspective;

[0022] Figure 4 yes Figure 3 A magnified view of a section at point B.

[0023] The reference numerals in the accompanying drawings are as follows:

[0024] 1. Support base; 2. Feeding roller; 3. Receiving roller; 4. Receiving drive component; 5. Transfer drive component; 6. Adsorption box; 61. Adsorption hole; 62. Flexible protrusion; 7. Sprayer; 8. Lifting drive component; 9. Guide roller; 11. Sensor; 12. Identifier; 13. Support frame; 14. Slider; 15. Guide rail; 16. Through groove; 17. Limiting block; 18. Ratchet. Detailed Implementation

[0025] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 and Figure 3 As shown, one embodiment of this utility model provides a steel mesh wiping device, including a support base 1, a feeding roller 2, a receiving roller 3, a receiving drive component 4, a transferring drive component 5, an adsorption box 6, and a sprayer 7; the feeding roller 2 and the receiving roller 3 are both rotatably mounted on the support base 1, the receiving drive component 4 and the adsorption box 6 are both mounted on the support base 1, and the receiving drive component 4 is connected to the receiving roller 3; the wiping component released by the feeding roller 2 is adsorbed by the adsorption box 6 and then wrapped around the receiving roller 3; it can be understood that the receiving drive component 4 includes, but is not limited to, a rotary motor, etc., and during the process of the receiving drive component 4 driving the receiving roller 3 to rotate, the feeding roller 2 will continuously release wiping components, and the wiping components include, but are not limited to, wiping paper, wiping belt, wiping cloth, etc.

[0029] The material transfer drive 5 is mounted on the support base 1 and connected to the sprayer 7, for driving the sprayer 7 to move axially along the discharge roller 2, so that the sprayer 7 sprays cleaning agent onto the wiping component. Understandably, the sprayer 7 stores cleaning agent, and the material transfer drive 5 includes, but is not limited to, a pneumatic cylinder, a belt assembly, and a linear motor; the sprayer 7 can spray cleaning agent onto the wiping component in front of the adsorption box 6.

[0030] In this invention, the wiping component released by the feeding roller 2 is adsorbed by the adsorption box 6 and then wrapped around the receiving roller 3; the material transfer drive 5 is mounted on the support base 1 and connected to the sprayer 7, and is used to drive the sprayer 7 to move axially along the feeding roller 2 so that the sprayer 7 sprays cleaning agent onto the wiping component; specifically, the material transfer drive 5 drives the sprayer 7 to move laterally, and the sprayer 7 sprays cleaning agent onto the wiping component in front of the adsorption box 6; the material receiving drive 4 drives the receiving roller 3 to rotate, and the receiving roller 3 moves the wiping component with cleaning agent to above the adsorption box 6; the wiping component above the adsorption box 6 contacts the bottom surface of the stencil to be wiped; the stencil to be wiped or the stencil wiping device moves, so that the wiping component above the adsorption box 6 can wipe away the solder paste on the bottom surface of the stencil to be wiped. In this invention, the wiping component is coated with cleaning agent before wiping the steel mesh, ensuring the cleanliness of the steel mesh after wiping; moreover, the steel mesh wiping device has a simple structure, high wiping efficiency, and low manufacturing cost.

[0031] In one embodiment, such as Figure 1 and Figure 3 As shown, the steel mesh wiping device further includes a lifting drive component 8 mounted on the support base 1, and the adsorption box 6 is mounted on the output end of the lifting drive component 8; the lifting drive component 8 is used to drive the adsorption box 6 to rise and fall, so that the adsorption box 6 drives the wiping component on it to abut against the steel mesh to be wiped. It can be understood that the lifting drive component 8 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, and a linear motor.

[0032] Specifically, the lifting drive 8 moves the adsorption box 6 upward, causing the wiping component already coated with cleaning agent on the adsorption box 6 to come into contact with the bottom surface of the stencil to be tested, thus wiping away the solder paste on the bottom surface of the stencil. The lifting drive 8 then moves the adsorption box 6 downward, and after the test component detaches from the stencil, the receiving drive 4 rotates the receiving roller 3, which can then wrap the used wiping component around itself. In this embodiment, the design of the lifting drive 8 further ensures the wiping effect of the stencil wiping device.

[0033] In one embodiment, such as Figure 3As shown, the adsorption box 6 is provided with adsorption holes 61 and flexible protrusions 62 extending axially along the feeding roller 2. The adsorption holes 61 are used to adsorb the wiping component onto the flexible protrusions 62. It can be understood that both the flexible protrusions 62 and the adsorption holes 61 are located on the top of the adsorption box 6, and the flexible protrusions 62 can be made of silicone. In this embodiment, the adsorption holes 61 adsorb the wiping component onto the flexible protrusions 62, and the flexible protrusions 62 cause the wiping component on them to contact the bottom surface of the steel mesh to be tested. Therefore, the adsorption box 6 and the steel mesh to be tested have a flexible contact, ensuring the adhesion density between the wiping component and the steel mesh, further improving the wiping effect of the steel mesh wiping device.

[0034] In one embodiment, such as Figure 1 and Figure 3 As shown, the steel mesh wiping device also includes a guide roller 9 rotatably mounted on the support base 1. The wiping element released by the feeding roller 2 bypasses the guide roller 9 and is then adsorbed by the adsorption box 6 and wrapped around the receiving roller 3. Understandably, the guide roller 9 can guide the wiping element between the feeding roller 2 and the receiving roller 3, ensuring the stability of the wiping element's transmission between the feeding roller 2 and the receiving roller 3.

[0035] In one embodiment, such as Figure 3 and Figure 4 As shown, the steel mesh wiping device also includes a sensor 11 mounted on the support base 1 and an identifier 12 sleeved on the guide roller 9. The identifier 12 has a plurality of spaced-apart recesses, some of which are inserted into the sensing grooves of the sensor 11. It is understood that the identifier 12 includes, but is not limited to, an encoder, and the sensor 11 includes, but is not limited to, a laser sensor 11.

[0036] Specifically, when the feeding roller 2 has a wiping element, the rotation of the receiving roller 3 will drive the guide roller 9 and the feeding roller 2 to rotate via the wiping element. The guide roller 9 will rotate its identifier 12, and the sensor 11 will detect the rotation of the guide roller 9 through the identifier 12. That is, when the sensor 11 detects the rotation of the identifier 12, it indicates that a wiping element is wrapped around the feeding roller 2. When there is no wiping element on the feeding roller 2, the rotation of the receiving roller 3 will not drive the guide roller 9 and the feeding roller 2 to rotate, and the sensor 11 will not detect the rotation of the identifier 12. Related alarms, displays, etc., will issue an alarm indicating that a wiping element is missing from the guide roller 9, prompting relevant personnel to replace the feeding roller 2 and the receiving roller 3. In this embodiment, the design of the identifier 12 and the sensor 11 improves the automation level of the steel mesh wiping device.

[0037] In one embodiment, such as Figure 3 As shown, the steel mesh wiping device also includes a support frame 13, a slider 14, and a guide rail 15. The guide rail 15 is mounted on the support base 1 along the axial direction of the feeding roller 2. The support frame 13 is slidably mounted on the guide rail 15 via the slider 14. The sprayer 7 is mounted on the support frame 13. Understandably, during the movement of the support frame 13 and the sprayer 7 by the moving drive component, the support base 1 moves along the guide rail 15 via the slider 14, ensuring the stability of the sprayer 7's movement.

[0038] In one embodiment, such as Figure 3 As shown, the support base 1 is provided with a through groove 16 extending axially along the feed roller 2, and the guide rail 15 is mounted on the side wall of the through groove 16. Understandably, the sprayer 7 is mounted on the top of the support frame 13, and the top of the support frame 13 is inserted into the through groove 16, improving the compactness of the steel mesh wiping device.

[0039] In one embodiment, the material transfer drive 5 includes a motor, a belt clamp, a first pulley, a second pulley, and a belt wound between the first pulley and the second pulley. The first pulley and the second pulley are rotatably mounted on the support base 1 at intervals. The motor is mounted on the support base 1 and connected to the first pulley. The belt is connected to the support frame 13 via the belt clamp. Specifically, the motor drives the first pulley to rotate, and the first pulley drives the support member to move via the belt. In this embodiment, the moving drive has a compact structure, occupies little space, and has a large moving stroke.

[0040] In one embodiment, such as Figure 1 and Figure 2 As shown, the steel mesh wiping device further includes a limiting block 17 mounted on the support base 1 and a ratchet 18 sleeved on the feeding roller 2. The ratchet 18 has helical teeth, and the limiting block 17 has limiting teeth inserted into the helical teeth. The limiting block 17 is used to prevent the feeding roller 2 from reversing through the ratchet 18. Understandably, during the forward rotation of the feeding roller 2 driven by the receiving roller 3 through the wiping member, the limiting teeth on the limiting block 17 can pass over different helical teeth. Since the limiting teeth are inserted into the grooves of the helical teeth, the limiting block 17 can prevent the feeding roller 2 from reversing, ensuring that the wiping member between the feeding roller 2 and the receiving roller 3 is in a taut state, further ensuring the wiping effect of the steel mesh wiping device on the steel mesh.

[0041] Another embodiment of this utility model provides a stencil printing device, including the stencil wiping device described above.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A steel mesh wiping device, characterized in that, The device includes a support base, a feeding roller, a receiving roller, a receiving drive component, a transferring drive component, an adsorption box, and a sprayer. The feeding roller and the receiving roller are both rotatably mounted on the support base. The receiving drive component and the adsorption box are both mounted on the support base. The receiving drive component is connected to the receiving roller. The wiping component released by the feeding roller is adsorbed by the adsorption box and then wrapped around the receiving roller. The material transfer drive is mounted on the support and connected to the sprayer, and is used to drive the sprayer to move axially along the discharge roller so that the sprayer sprays cleaning agent onto the wiping component.

2. The steel mesh wiping device according to claim 1, characterized in that, The steel mesh wiping device also includes a lifting drive component installed on the support base, and the adsorption box is installed at the output end of the lifting drive component; the lifting drive component is used to drive the adsorption box to rise and fall, so that the adsorption box drives the wiping component on it to abut against the steel mesh to be wiped.

3. The steel mesh wiping device according to claim 1, characterized in that, The adsorption box is provided with adsorption holes and flexible protrusions extending along the axial direction of the feeding roller. The adsorption holes are used to adsorb the wiping material onto the flexible protrusions.

4. The steel mesh wiping device according to claim 1, characterized in that, The steel mesh wiping device also includes a guide roller rotatably mounted on the support base, and the wiping element released by the feeding roller bypasses the guide roller and is absorbed by the adsorption box and wrapped around the receiving roller.

5. The steel mesh wiping device according to claim 4, characterized in that, The steel mesh wiping device also includes a sensor mounted on the support base and an identifier sleeved on the guide roller. The identifier has a plurality of spaced-apart concave teeth, some of which are inserted into the sensing groove of the sensor.

6. The steel mesh wiping device according to claim 1, characterized in that, The steel mesh wiping device also includes a support frame, a slider, and a guide rail. The guide rail is mounted on the support base along the axial direction of the feeding roller. The support frame is slidably mounted on the guide rail via the slider. The sprayer is mounted on the support frame.

7. The steel mesh wiping device according to claim 6, characterized in that, The support base is provided with a through groove extending along the axial direction of the feeding roller, and the guide rail is installed on the side wall of the through groove.

8. The steel mesh wiping device according to claim 6, characterized in that, The material transfer drive includes a motor, a belt clamp, a first pulley, a second pulley, and a belt wound between the first pulley and the second pulley. The first pulley and the second pulley are rotatably mounted on the support base at intervals. The motor is mounted on the support base and connected to the first pulley. The belt is connected to the support frame through the belt clamp.

9. The steel mesh wiping device according to claim 1, characterized in that, The steel mesh wiping device also includes a limiting block installed on the support base and a ratchet sleeved on the feeding roller. The ratchet is provided with helical teeth, and the limiting block is provided with limiting teeth inserted into the helical teeth. The limiting block is used to prevent the feeding roller from reversing through the ratchet.

10. A stencil printing device, characterized in that, Includes the steel mesh wiping device as described in any one of claims 1 to 9.

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