Printing head and screen printing equipment

Abstract

The utility model provides a printing head and screen printing equipment. The printing head comprises a fixing plate, the base plate is movably installed at the bottom of the fixing plate in the first direction, and a plurality of first guiding pieces are arranged on the base plate at intervals; the rotating plate is arranged at the bottom of the base plate and is provided with an adjusting groove and a plurality of second guide parts which are matched with the first guide parts so as to enable the rotating plate to rotate relative to the base plate; the printing screen plate is mounted at the bottom of the rotating plate; the adjusting piece is movably mounted at the bottom of the base plate in the second direction and comprises an adjusting part located in the adjusting groove. Driving force is provided for rotation of the rotating plate through translation of the adjusting piece, the rotating plate rotates relative to the base plate under the guiding action of the first guiding piece and the second guiding piece, the structure is simple, and stability is high.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor fabrication technology, and in particular to a printhead and screen printing equipment. Background Technology

[0002] In the production of solar cells, screen printing is used to print electrodes onto the cells. Before printing, the relative position of the printing screen and the cell must be adjusted to ensure alignment. Existing methods that use rotating printing heads to adjust the screen angle are complex, have poor adjustment efficiency, and are prone to misalignment.

[0003] In view of this, it is necessary to provide a printhead to solve the above-mentioned technical problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a printing head, which includes a fixing plate;

[0005] A base plate movably mounted on the bottom of the fixed plate along a first direction, wherein a plurality of first guide members are spaced apart on the base plate;

[0006] A rotating plate is mounted on the bottom of the substrate. The rotating plate is provided with an adjustment groove and a plurality of second guide members that cooperate with the first guide member to allow the rotating plate to rotate relative to the substrate.

[0007] A printing screen is installed at the bottom of the rotating plate;

[0008] An adjustment member is movably mounted on the bottom of the substrate along a second direction. The adjustment member includes an adjustment portion located within the adjustment groove. The second direction and the first direction have an included angle.

[0009] As a further improvement of this utility model, the second direction is perpendicular to the first direction, and the dimension of the adjusting groove along the second direction is larger than the dimension of the adjusting part along the second direction.

[0010] As a further improvement of this utility model, the adjustment groove extends through the rotating plate, and the adjustment groove has an opening on the side facing the adjustment member.

[0011] As a further improvement of this utility model, the rotating plate also includes a supporting member located on one side of the adjusting groove along the second direction. The supporting member includes a supporting block and an elastic member acting on the supporting block to abut against the adjusting part.

[0012] As a further improvement of this utility model, the rotating plate further includes a receiving groove for accommodating the supporting member, wherein the dimension of the receiving groove along the thickness direction of the rotating plate is smaller than the thickness of the rotating plate.

[0013] As a further improvement of this utility model, the bottom of the substrate is provided with a driving member for driving the adjusting member to move along the second direction. The driving member includes a lead screw extending in the second direction, a drive motor for driving the lead screw to rotate, and a drive seat threadedly connected to the lead screw.

[0014] The adjusting component also includes a connecting part that is fixedly connected to the drive seat, and the adjusting part is rotatably mounted on the connecting part.

[0015] As a further improvement of this utility model, one of the first guide member and the second guide member has a groove on its outer side wall, and the other has a mating portion located in the groove.

[0016] As a further improvement of this utility model, the number of the first guide members is three, and the three first guide members are distributed in an isosceles triangle; the number of the second guide members is the same as the number of the first guide members.

[0017] As a further improvement of this utility model, the bottom of the rotating plate is provided with a first connecting plate on both sides along the second direction and a cylinder located outside the first connecting plate, the top of the printing screen is provided with a second connecting plate connected to the first connecting plate on both sides along the second direction, and the piston rod of the cylinder abuts against the second connecting plate.

[0018] This utility model also provides a screen printing device, which includes the above-mentioned printing head.

[0019] The beneficial effects of this utility model are: the utility model provides driving force for the rotation of the rotating plate by the translation of the adjusting member, and the rotating plate rotates relative to the substrate under the guidance of the first guide member and the second guide member. The structure is simple and the stability is high. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the printing head of this utility model from one perspective;

[0022] Figure 2 This is a structural schematic diagram of the printing head of this utility model from another perspective;

[0023] Figure 3 This is a bottom view of the printing head of this utility model;

[0024] Figure 4 for Figure 3 Cross-sectional view along the AA direction;

[0025] Figure 5 This is a bottom view of the printing head of this utility model after it is hidden from the printing screen;

[0026] Figure 6 for Figure 5 A magnified structural diagram of A in the middle;

[0027] Figure 7 This is a bottom view of the substrate of this utility model;

[0028] Figure 8 This is a schematic diagram of the substrate of this utility model from another perspective;

[0029] Figure 9 This is a bottom view of the rotating plate of this utility model;

[0030] Figure 10 for Figure 9 A magnified structural diagram of B in the diagram;

[0031] Figure 11 This is a structural schematic diagram of the rotating plate of this utility model from another perspective;

[0032] Figure 12 This is a structural schematic diagram of the rotating plate of this utility model from another perspective;

[0033] Figure 13 This is a schematic diagram showing the connection between the rotating plate and the printing screen of this utility model;

[0034] Figure 14 This is a schematic diagram showing the cooperation between the first guide member and the second guide member of this utility model;

[0035] Figure 15 for Figure 5 The diagram shows the printhead after rotation adjustment.

[0036] In the picture:

[0037] 100. Fixing plate;

[0038] 200, substrate; 201, first guide member; 202, driving member; 202a, lead screw; 202b, drive motor; 202c, drive base;

[0039] 300, Rotating plate; 301, Adjusting groove; 301a, Opening; 302, Second guide member; 303, Supporting member; 303a, Supporting block; 303b, Elastic member; 303c, Fixing block; 304, Receiving groove; 305, First connecting plate; 306, Cylinder;

[0040] 400. Printing screen; 401. Second connecting plate;

[0041] 500, Adjusting component; 501, Adjusting part; 502, Connecting part. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0045] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0046] like Figures 1 to 15 As shown, the printing head provided by this utility model includes a fixed plate 100, a base plate 200 movably mounted on the bottom of the fixed plate 100, a rotating plate 300 rotatably mounted on the bottom of the base plate 200, a printing screen 400 mounted on the bottom of the rotating plate 300, and an adjusting member 500 for driving the rotating plate 300 to rotate relative to the base plate 200.

[0047] The fixed plate 100 is used to connect with the lifting drive component that drives the printing head to move along the height direction. The lifting drive component drives the printing head to move along the height direction so as to screen print the battery cells placed on the printing stage through the printing screen 400.

[0048] The substrate 200 is movably mounted on the bottom of the fixing plate 100 along a first direction. A translation drive (not shown in the figure) is provided between the fixing plate 100 and the substrate 200 for driving the substrate 200 to move relative to the fixing plate 100 along the first direction. During the movement of the substrate 200 along the first direction, the rotating plate 300 and the printing screen 400 move synchronously, thereby initially aligning the printing screen 400 and the battery cell on the printing stage.

[0049] A plurality of first guide members 201 are spaced apart on the substrate 200. The first guide members 201 are used to guide the rotation of the rotating plate 300. The rotation of the rotating plate 300 drives the printing screen 400 to rotate synchronously, thereby accurately aligning the printing screen 400 and the battery cell on the printing stage.

[0050] In one specific embodiment, the first guide member 201 is a roller, and three first guide members 201 are spaced apart on the substrate 200. The centers of the three first guide members 201 are located on the same circumference, thereby ensuring the stability and accuracy of the rotating plate 300 during rotation.

[0051] The bottom of the substrate 200 is provided with a driving member 202 for driving the adjusting member 500 to move along a second direction. The driving member 202 includes a lead screw 202a extending along the second direction, a drive motor 202b that drives the lead screw 202a to rotate, and a drive seat 202c threadedly connected to the lead screw 202a. The adjusting member 500 is fixedly connected to the drive seat 202c. The second direction and the first direction have an included angle; preferably, the second direction is perpendicular to the first direction.

[0052] The drive motor 202b drives the lead screw 202a to rotate, causing the drive seat 202c to move along the lead screw 202a, thereby driving the adjusting member 500 to move in the second direction. The movement of the adjusting member 500 provides driving force for the rotation of the rotating plate 300, and under the guidance of the first guide member 201, the rotating plate 300 rotates relative to the base plate 200.

[0053] The rotating plate 300 is provided with an adjustment groove 301 and a plurality of second guide members 302 that cooperate with the first guide member 201 to allow the rotating plate 300 to rotate relative to the substrate 200.

[0054] The adjustment groove 301 is located on one side of the rotating plate 300 along the first direction, and the adjustment member 500 is partially located in the adjustment groove 301. The portion of the adjustment member 500 located in the adjustment groove 301 is the adjustment part 501.

[0055] Thus, when the drive seat 202c drives the adjusting member 500 to move along the second direction, the adjusting part 501 acts on the inner wall of the adjusting groove 301, thereby providing driving force for the rotation of the rotating plate 300. At the same time, under the guidance of the first guide member 201 and the second guide member 302, the driving force in the horizontal direction is converted into the rotation of the rotating plate 300.

[0056] The adjustment groove 301 extends through the rotating plate 300, thereby increasing the contact area between the adjustment part 501 and the adjustment groove 301, so as to provide driving force for the rotation of the rotating plate 300.

[0057] The dimension of the adjusting groove 301 along the second direction is larger than the dimension of the adjusting part 501 along the second direction. It is understood that when the adjusting member 500 moves (linearly) along the second direction, and the rotating plate 300 rotates, the adjusting part 501 will move relative to the adjusting groove 301. By providing a large-sized adjusting groove 301, the movement of the adjusting part 501 is provided, thereby preventing interference between the two.

[0058] The adjustment groove 301 has an opening 301a on the side facing the adjustment member 500. By providing the opening 301a, the adjustment part 501 is also provided with a range of motion, preventing interference between the two.

[0059] The rotating plate 300 is provided with a plurality of second guide members 302 at intervals. The second guide members 302 cooperate with the first guide members 201 to guide the rotation of the rotating plate 300.

[0060] The number of second guide members 302 is the same as the number of first guide members 201, that is, they are arranged in a one-to-one correspondence. Corresponding to the three first guide members 201, three second guide members 302 are spaced apart on the rotating plate 300. The second guide member 302 is an arc-shaped strip, and the arcs of the three second guide members 302 are located on the same circumference, and the circumference of the three second guide members 302 and the circumference of the three first guide members 201 are concentric circles.

[0061] One of the first guide member 201 and the second guide member 302 has a groove on its outer side wall, and the other has a mating part located in the groove, which abuts against the groove to guide the rotation of the rotating plate 300.

[0062] Preferably, the three first guide members 201 are arranged in an isosceles triangle, with one located on the side of the substrate 200 away from the drive member 202, and the other two located on the side of the substrate 200 closer to the drive member 202. The second guide member 302 is configured with reference to the first guide member 201, thereby further improving the stability of the rotating plate 300 during rotation.

[0063] Of course, in other embodiments, the positions of the first guide member 201 and the second guide member 302 can be interchanged, and the structures of the first guide member 201 and the second guide member 302 can also be interchanged.

[0064] The rotating plate 300 also includes a support member 303 located on one side of the adjustment groove 301 along the second direction. The support member 303 includes a support block 303a and an elastic member 303b acting on the support block 303a to abut against the adjustment part 501.

[0065] As previously described, the dimension of the adjusting groove 301 along the second direction is larger than the dimension of the adjusting part 501 along the second direction, resulting in a gap between the adjusting part 501 and the adjusting groove 301. Thus, even without applying a force to drive the rotating plate 300 to rotate, the rotating plate 300 is prone to wobbling due to the movement of the print head or other factors. By providing the abutment block 303a to abut against the adjusting part 501, the gap between the adjusting part 501 and the adjusting groove 301 is eliminated, thereby maintaining the rotating plate 300 in a fixed state without applying a force to drive its rotation.

[0066] The supporting member 303 further includes a fixing block 303c, which is fixed to the rotating plate 300. The supporting block 303a is located inside the fixing block 303c, and under the action of the elastic member 303b, a portion of the supporting block 303a protrudes from the fixing block 303c to abut against the adjusting part 501 in the adjusting groove 301. The elastic member 303b is a spring.

[0067] The rotating plate 300 further includes a receiving groove 304 for accommodating the supporting member 303. The receiving groove 304 is located on one side of the adjusting groove 301 along the second direction, and the fixing block 303c is fixed within the receiving groove 304. The dimension of the receiving groove 304 along the thickness direction of the rotating plate 300 is smaller than the thickness of the rotating plate 300, that is, the receiving groove 304 does not penetrate the rotating plate 300. By providing the receiving groove 304 to accommodate the supporting member 303, the supporting member 303 is hidden, maintaining the flatness of the entire rotating plate 300 for connection with the substrate 200 and the printing screen 400.

[0068] It should be noted that when the drive seat 202c drives the adjusting member 500 to move along the second direction, the adjusting part 501 applies pressure to the supporting block 303a, causing the elastic member 303b to be compressed, and the supporting block 303a to move into the fixed block 303c, thereby providing a movement amount for the adjustment part 501.

[0069] The bottom of the rotating plate 300 is provided with a first connecting plate 305 on both sides along the second direction, and a cylinder 306 located outside the first connecting plate 305. The first connecting plate 305 and the cylinder 306 are used to mount the printing screen 400. The top of the printing screen 400 is provided with a second connecting plate 401 connected to the first connecting plate 305 on both sides along the second direction, and the piston rod of the cylinder 306 abuts against the second connecting plate 401.

[0070] Specifically, the first connecting plate 305 includes a first fixing part connected to the rotating plate 300 and a first connecting part located at the bottom of the first fixing part. The first fixing part and the first connecting part are perpendicular to each other and are in an "L" shape. The second connecting plate 401 includes a second fixing part connected to the printing screen 400 and a second connecting part located at the top of the second fixing part. The second fixing part and the second connecting part are perpendicular to each other and are also in an "L" shape.

[0071] During installation, the printing screen 400 is slidably mounted on the bottom of the rotating plate 300 via the first connecting part and the second connecting part. Then, the piston rod of the cylinder 306 abuts against the top of the second connecting part, meaning the second connecting part is fixed between the first connecting part and the piston rod of the cylinder 306. To disassemble the printing screen 400, simply retract the piston rod of the cylinder 306 and then slide the printing screen 400 along the first direction.

[0072] The adjusting member 500 includes an adjusting part 501 located within the adjusting groove 301 and a connecting part 502 for connecting the drive seat 202c and the adjusting part 501. The adjusting part 501 is rotatably connected to the end of the connecting part 502 away from the drive seat 202c. The connecting part 502 drives the adjusting part 501 to move along the second direction.

[0073] This utility model also provides a screen printing device, which includes the above-mentioned printing head.

[0074] In summary, this utility model provides driving force for the rotation of the rotating plate 300 by translating the adjusting member 500, and makes the rotating plate 300 rotate relative to the substrate 200 under the guidance of the first guide member 201 and the second guide member 302. The structure is simple and has high stability.

[0075] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0076] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. All equivalent embodiments or modifications made without departing from the spirit of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A printing head, characterized in that, include: Fixing plate (100); A base plate (200) is movably mounted on the bottom of the fixing plate (100) along a first direction, and a plurality of first guide members (201) are spaced apart on the base plate (200); A rotating plate (300) is installed at the bottom of the substrate (200). The rotating plate (300) is provided with an adjustment groove (301) and a plurality of second guide members (302). The second guide members (302) cooperate with the first guide members (201) to make the rotating plate (300) rotate relative to the substrate (200). A printing screen (400) is installed at the bottom of the rotating plate (300); An adjustment member (500) is movably mounted on the bottom of the substrate (200) along a second direction. The adjustment member (500) includes an adjustment portion (501) located in the adjustment groove (301). The second direction and the first direction have an included angle.

2. The printing head according to claim 1, characterized in that: The second direction is perpendicular to the first direction, and the dimension of the adjustment groove (301) along the second direction is larger than the dimension of the adjustment part (501) along the second direction.

3. The printing head according to claim 2, characterized in that: The adjustment groove (301) extends through the rotating plate (300), and the adjustment groove (301) has an opening (301a) on the side facing the adjustment member (500).

4. The printing head according to claim 2, characterized in that: The rotating plate (300) further includes a retaining member (303) located on one side of the adjusting groove (301) along the second direction. The retaining member (303) includes a retaining block (303a) and an elastic member (303b) acting on the retaining block (303a) to abut against the adjusting part (501).

5. The printing head according to claim 4, characterized in that: The rotating plate (300) further includes a receiving groove (304) for accommodating the abutment (303), the dimension of the receiving groove (304) along the thickness direction of the rotating plate (300) being smaller than the thickness of the rotating plate (300).

6. The printing head according to claim 1, characterized in that: The bottom of the substrate (200) is provided with a driving member (202) for driving the adjusting member (500) to move along the second direction. The driving member (202) includes a lead screw (202a) extending in the second direction, a drive motor (202b) for driving the lead screw (202a) to rotate, and a drive seat (202c) threadedly connected to the lead screw (202a). The adjusting member (500) further includes a connecting part (502) fixedly connected to the drive seat (202c), and the adjusting part (501) is rotatably mounted on the connecting part (502).

7. The printing head according to claim 1, characterized in that: One of the first guide member (201) and the second guide member (302) has a groove on its outer side wall, and the other has a mating portion located within the groove.

8. The printing head according to claim 7, characterized in that: The number of the first guide members (201) is three, and the three first guide members (201) are distributed in an isosceles triangle; The number of the second guide (302) is the same as the number of the first guide (201).

9. The printing head according to claim 1, characterized in that: The bottom of the rotating plate (300) is provided with a first connecting plate (305) on both sides along the second direction and a cylinder (306) located outside the first connecting plate (305). The top of the printing screen (400) is provided with a second connecting plate (401) connected to the first connecting plate (305) on both sides along the second direction. The piston rod of the cylinder (306) abuts against the second connecting plate (401).

10. A screen printing device, characterized in that: Includes the printhead as described in any one of claims 1 to 9.

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