Glue printing device

Abstract

The utility model relates to a glue printing device. The glue printing device comprises a storage container and a pressing mechanism. A screen part is arranged at one end of the storage container in the first direction, and a plurality of meshes are formed in the screen part. The press-fit mechanism is movably arranged in the storage container, the press-fit mechanism can move in the direction away from the screen printing plate part in the first direction so that a storage cavity communicating with all the meshes can be defined by the press-fit mechanism and the storage container, and the press-fit mechanism can further move in the direction close to the screen printing plate part in the first direction so that the storage cavity can communicate with all the meshes. And the glue in the storage cavity is extruded to the base material through the meshes. In the printing process, the pressing mechanism exerts acting force on the screen printing plate part in the first direction, so that the screen printing plate part is evenly stressed, the screen printing plate part is not prone to deformation, and the uniformity of glue printing is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery piece glue printing, in particular to a glue printing device. BACKGROUND

[0002] In the process of solar cell production, a glue printing device is used to print glue on a battery piece to form glue points on the battery piece, and a solder strip is bonded to the battery piece through the glue points.

[0003] A common glue printing device includes a screen and a scraper. When printing glue, the battery piece is placed below the screen, glue is added to the screen, and then the scraper moves back and forth on the screen to squeeze the glue on the screen, so that the glue is transferred to the battery piece through the screen holes. However, since the contact point between the scraper and the screen is small, the screen is prone to deformation after a long time of glue printing, affecting the uniformity of glue printing. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a glue printing device to ensure the uniformity of glue printing.

[0005] A glue printing device comprises:

[0006] a storage container, one end of the storage container being provided with a screen portion along a first direction, the screen portion being provided with a plurality of screen holes; and

[0007] a pressing mechanism movably arranged in the storage container, the pressing mechanism being capable of moving in the first direction away from the screen portion to form a storage cavity for storing glue with the storage container, the storage cavity being in communication with all the screen holes, and the pressing mechanism being also capable of moving in the first direction towards the screen portion to extrude the glue in the storage cavity to a substrate through the screen holes.

[0008] In one of the embodiments, the glue printing device further comprises a cutting mechanism, the cutting mechanism comprising a cutting portion; when the pressing mechanism moves in the first direction towards the screen portion to fill the storage cavity with the glue, the cutting portion removes the glue extruded through the screen holes on the screen portion.

[0009] In one of the embodiments, an outer surface of the cutting portion is covered with a hydrophobic layer.

[0010] In one of the embodiments, the cutting mechanism further comprises a driving member connected with the cutting portion, the driving member being used to drive the cutting portion to move on a side of the screen portion away from the pressing mechanism.

[0011] In one of the embodiments, the storage container is provided with an exhaust port in communication with the storage cavity.

[0012] In one of the embodiments, the air outlet is provided with a first switch member for opening or closing the air outlet; or the air outlet is provided with an air outlet pipe, and the air outlet pipe is provided with a first switch member.

[0013] In one of the embodiments, the storage container is provided with a feeding port for communicating with the glue supply container, and the feeding port communicates with the storage cavity.

[0014] In one of the embodiments, the feeding port is provided with a feeding pipe, and an end of the feeding pipe away from the feeding port is used for communicating with the glue supply container, and the feeding pipe is provided with a second switch member.

[0015] In one of the embodiments, the glue printing device further comprises a sealing cover, and when the glue is added into the storage cavity and the air in the storage cavity is discharged, the sealing cover is arranged on the screen part.

[0016] In one of the embodiments, the pressing mechanism comprises a piston, the piston is in sealing cooperation with the inner side wall of the storage container, and the piston can move along the side wall of the storage container towards or away from the screen part.

[0017] In the glue printing device, during printing, the substrate is placed below the screen part along the first direction. Then, the pressing mechanism moves along the first direction towards the screen part, the pressing mechanism extrudes the glue to extrude the glue in the storage cavity to the substrate through the screen hole to form a plurality of glue points on the substrate. In this way, during printing, the pressing mechanism exerts force on the screen part along the first direction, the screen part is uniformly stressed, and the screen part is not easy to deform, which is beneficial to improve the uniformity of glue printing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic diagram of a glue printing device according to an embodiment of the present application.

[0019] Figure 2 FIG. 2 is a structural schematic diagram of a screen part according to an embodiment of the present application.

[0020] REFERENCE SIGNS:

[0021] 10, storage container; 11, screen part; 111, screen hole; 12, storage cavity; 13, feeding port; 14, air outlet; 20, pressing mechanism; 30, cutting mechanism; 31, cutting part; 40, feeding pipe; 41, second switch member; 50, air outlet pipe; 51, first switch member; 60, sealing cover; 70, glue supply container. DETAILED DESCRIPTION

[0022] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the scope of the present application, and it is understood that similar improvements can be made by those skilled in the art in light of the foregoing description. Therefore, the present application is not limited to the following disclosed specific embodiments.

[0023] Referring to Figure 1 and Figure 2 An embodiment of the present application provides a glue printing device, which comprises a glue storage container 10 and a pressing mechanism 20. The glue storage container 10 is provided with a screen part 11 at one end along a first direction, and the screen part 11 is provided with a plurality of screen holes 111. For the convenience of understanding, the first direction is denoted by S.

[0024] Referring to Figure 1 The pressing mechanism 20 is movably arranged in the glue storage container 10, and the pressing mechanism 20 is capable of moving along the first direction away from the screen part 11, so that the pressing mechanism 20 and the glue storage container 10 form a glue storage cavity 12 for storing glue, and the glue storage cavity 12 is in communication with all the screen holes 111. The pressing mechanism 20 is also capable of moving towards the screen part 11, so that the glue in the glue storage cavity 12 is squeezed out through the screen holes 111 to a substrate.

[0025] Specifically, the screen part 11 is arranged at one end of the glue storage container 10 along the first direction, so that Figure 1 For example, the screen part 11 is arranged at the lower end of the glue storage container 10. The pressing mechanism 20 is capable of moving along the first direction, so that the pressing mechanism 20 moves towards or away from the screen part 11.

[0026] It should be noted that, since the pressing mechanism 20 is movably arranged in the glue storage container 10, the volume of the glue storage cavity 12 formed by the pressing mechanism 20 and the glue storage container 10 is variable. When the bottom of the pressing mechanism 20 is in contact with the screen part 11, the volume of the glue storage cavity 12 is 0. When the pressing mechanism 20 moves away from the screen part 11, the volume of the glue storage cavity 12 gradually increases.

[0027] Optionally, the substrate is a battery plate. Of course, in other embodiments, the substrate can also be of other types, which are not limited in this regard.

[0028] The glue printing device is used to place the substrate below the screen printing part 11 along the first direction during printing. Then, the pressing mechanism 20 moves along the first direction to the direction close to the screen printing part 11, and the pressing mechanism 20 extrudes the glue to extrude the glue in the storage cavity 12 to the substrate through the screen holes 111 to form a plurality of glue points on the substrate. In this way, during printing, the pressing mechanism 20 applies force to the screen printing part 11 along the first direction, the screen printing part 11 is uniformly stressed, and the screen printing part 11 is not easy to deform, which is beneficial to improve the uniformity of glue printing, and can also avoid the phenomenon that the substrate is cracked due to uneven stress of the screen printing part 11.

[0029] In one embodiment, referring to Figure 1 The pressing mechanism 20 includes a piston. The piston is in sealing cooperation with the inner side wall of the storage container 10, and the piston can move along the side wall of the storage container 10 to the direction close to or away from the screen printing part 11. During movement of the piston, external air cannot enter the storage cavity 12 through the outer circumferential surface of the piston and the inner side wall of the storage container 10, which prevents air from mixing into the glue, thereby reducing bubbles in the glue points and ensuring the quality of glue printing.

[0030] Optionally, the pressing mechanism 20 further includes a power member connected with the piston, and the power member is used to drive the piston to move to the direction close to or away from the screen printing part 11. The power member can be a gas cylinder, a lead screw module, etc., but is not limited thereto. Of course, in other embodiments, the power member can not be provided, and the operator manually moves the piston to drive the piston to move to the direction close to or away from the screen printing part 11.

[0031] In one embodiment, referring to Figure 1 The storage container 10 is provided with an exhaust port 14 in communication with the storage cavity 12. Optionally, the exhaust port 14 is arranged at one end of the storage container 10 close to the screen printing part 11. In use, an external force acts on the pressing mechanism 20 to move the pressing mechanism 20 to the direction close to the screen printing part 11 until the bottom of the pressing mechanism 20 contacts the screen printing part 11. During movement of the pressing mechanism 20, the air in the storage cavity 12 is discharged through the exhaust port 14. When the bottom of the pressing mechanism 20 contacts the screen printing part 11, the air in the storage cavity 12 is exhausted, and this state is the initial state of the glue printing device. In this way, the glue in the storage cavity 12 is prevented from mixing with air, bubbles in the glue points are reduced, and the quality of glue printing is ensured.

[0032] Further, referring to Figure 1, the exhaust port 14 is provided with an exhaust pipe 50, and the exhaust pipe 50 is provided with a first switch element 51. Optionally, the first switch element 51 is a stop valve or a stop clamp. If it is necessary to exhaust the air in the storage cavity 12, the second switch element 41 is opened, and an external force is applied to the pressing mechanism 20, so that the pressing mechanism 20 moves towards the direction close to the screen part 11, so that the air in the storage cavity 12 can be exhausted through the exhaust port 14 and the exhaust pipe 50. After the exhaust is completed, the first switch element 51 is closed, so that the air in the external environment cannot enter the storage cavity 12 through the exhaust pipe 50, so as to avoid the air mixed into the glue in the storage cavity 12, reduce the air bubbles in the glue point, and ensure the printing quality of the glue.

[0033] Of course, in other embodiments, the exhaust pipe 50 can also not be provided, and the first switch element 51 is directly arranged at the exhaust port 14, for example, the first switch element 51 is a sealing plug. If it is necessary to exhaust the air in the storage cavity 12, the sealing plug is removed. After the exhaust is completed, the sealing plug is arranged at the exhaust port 14.

[0034] In one embodiment, referring to Figure 1 , the storage container 10 is provided with a feeding port 13 for communicating with the glue supply container 70, and the feeding port 13 communicates with the storage cavity 12. Optionally, the feeding port 13 is arranged at one end of the storage container 10 close to the screen part 11. When the glue printing device is in the initial state, an external force is applied to the pressing mechanism 20, so that the pressing mechanism 20 moves away from the screen part 11, and under the action of negative pressure, the glue in the glue supply container 70 is sucked into the storage cavity 12, so that the glue can be added to the storage container 10. After the pressing mechanism 20 moves to the appropriate position, the pressing mechanism 20 remains stationary, and the glue addition to the storage container 10 is stopped.

[0035] Specifically, referring to Figure 1 , the feeding port 13 is provided with a feeding pipe 40, and one end of the feeding pipe 40 away from the feeding port 13 communicates with the glue supply container 70. In this way, by arranging the feeding pipe 40, the glue in the glue supply container 70 can enter the storage cavity 12 through the feeding pipe 40.

[0036] Further, referring to Figure 1 , the feeding pipe 40 is provided with a second switch element 41. Optionally, the second switch element 41 is a stop valve or a stop clamp. If it is necessary to add glue to the storage cavity 12, the second switch element 41 is opened, and an external force is applied to the pressing mechanism 20, so that the pressing mechanism 20 moves away from the screen part 11, and under the action of negative pressure, the glue in the glue supply container 70 can flow into the storage cavity 12 through the feeding pipe 40. If it is not necessary to add glue to the storage cavity 12, the second switch element 41 is closed, so that the glue in the glue supply container 70 cannot enter the storage cavity 12 through the feeding port 13, and at the same time, the air in the glue supply container 70 cannot enter the storage cavity 12 through the feeding pipe 40, so as to avoid the glue in the storage cavity 12 mixing with the air and affecting the printing quality of the glue.

[0037] In one embodiment, referring to Figure 1 , the glue printing device further comprises a sealing cover 60. During the process of emptying the air in the storage cavity 12 and adding glue into the storage container 10, the sealing cover 60 is arranged on the screen part 11 to avoid the air outside entering the storage cavity 12 through the screen holes 111, thereby avoiding the glue in the storage cavity 12 mixing with the air, which is beneficial to reduce the air bubbles in the glue dots and ensure the printing quality. When printing, the sealing cover 60 is removed from the screen part 11, so that the glue can be transferred to the substrate through the screen holes 111.

[0038] It should be noted that the size of the sealing cover 60 is matched with the size of the screen part 11, so that the sealing cover 60 can cover all the screen holes 111.

[0039] In one embodiment, referring to Figure 1 , the glue printing device further comprises a cutting mechanism 30. Optionally, the cutting mechanism 30 is a diamond wire cutting mechanism. When the pressing mechanism 20 moves towards the screen part 11 to fill the entire storage cavity 12 with glue, i.e. the pressing mechanism 20 is pre-pressed, the cutting mechanism 30 removes the glue flowing out of the screen holes 111 of the screen part 11. After adding glue into the storage container 10, there may be air in the storage cavity 12, so after the glue adding operation is completed, the pressing mechanism 20 moves towards the screen part 11 to fill the entire storage cavity 12 with glue, which ensures that there is no glue shortage during printing, and also avoids the mixing of air in the glue. During the movement of the pressing mechanism 20 towards the screen part 11, the glue will flow out of the screen holes 111 under the action of pressure. Therefore, the embodiment is provided with the cutting mechanism 30, which removes the glue squeezed out of the screen holes 111 of the screen part 11 during the pre-pressing process, so as to prevent the glue from remaining and affecting the appearance of the glue dots.

[0040] Further, referring to Figure 1 and Figure 2 , the cutting mechanism 30 comprises a cutting part 31 and a driving member. Optionally, the cutting part 31 is a cutting knife or a cutting wire. The driving member is connected with the cutting part 31, and is used to drive the cutting part 31 to move on the side of the screen part 11 away from the pressing mechanism 20 to remove the glue squeezed out of the screen holes 111 of the screen part 11. Optionally, the driving member is a lead screw module, a pneumatic cylinder, etc. Therefore, when the pressing mechanism 20 moves towards the screen part 11 to fill the entire storage cavity 12 with glue, the driving member drives the cutting part 31 to reciprocate on the side of the screen part 11 away from the pressing mechanism 20 to remove the glue squeezed out of the screen holes 111 of the screen part 11.

[0041] In one embodiment, the outer surface of the cutting part 31 is covered with a hydrophobic layer. Optionally, the hydrophobic layer can be a hydrophobic film or a hydrophobic coating layer, such as a fluorocarbon compound, a siloxane, etc. In this way, the cutting effect can be improved, and the cutting part 31 can ensure that all the glue squeezed out of the screen part 11 through the screen holes 111 is removed.

[0042] The operation process of the glue printing device of the present embodiment is as follows:

[0043] S10, the sealing cover 60 is arranged on the screen part 11, the first switch element 51 is opened, the second switch element 41 is closed, the pressing mechanism 20 moves towards the screen part 11 until the pressing mechanism 20 contacts the screen part 11, so as to exhaust the air in the storage cavity 12 through the exhaust port 14.

[0044] S20, the first switch element 51 is closed, the second switch element 41 is opened, the pressing mechanism 20 moves away from the screen part 11, under the action of negative pressure, the glue in the glue supply container 70 is sucked into the storage cavity 12; after the pressing mechanism 20 moves to a suitable position, the pressing mechanism 20 stops moving, the second switch element 41 is closed, and the storage container 10 is ensured to have no material exchange with the outside world.

[0045] S30, the sealing cover 60 is opened, the excess glue on the screen part 11 is removed, and the inside and outside of the storage container 10 reach pressure balance. Due to the small size of the screen holes 111 and the influence of the surface tension of the fluid, the glue will not naturally flow out through the screen holes 111.

[0046] S40, the pressing mechanism 20 moves towards the screen part 11 to fill the entire storage cavity 12 with glue. During the movement of the pressing mechanism 20, the glue flows out through the screen holes 111 under the action of pressure; then, the cutting mechanism 30 removes the glue flowing out through the screen holes 111, so that the glue flowing out through the screen holes 111 is separated from the screen part 11.

[0047] S50, the pressure of the pressing mechanism 20 acting on the glue is adjusted until the amount of glue flowing out through the screen holes 111 is constant, and then the pressing mechanism 20 is pressed with constant pressure to ensure the stability of the glue printing quality.

[0048] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0049] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0050] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0052] It is to be noted that when an element such as a layer, film, or region is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. It will be understood that, when an element or layer is referred to as being "connected" to or "coupled" to another element or layer, it can be directly connected or coupled or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0053] Various technical features described in the above embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations are described. It will be apparent to those skilled in the art, however, that the scope of the disclosure includes all such possible combinations.

[0054] The above-described embodiments are merely illustrative for the present application and are not to be used in a limiting manner. It should be noted that, for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these modifications and improvements should be considered within the scope of the present application. Therefore, the patent protection scope of the present application should be defined by the claims.

Claims

1. An adhesive stamping device characterized by comprising: The printing glue device comprises a storage container (10), a screen portion (11) provided at one end of the storage container (10) in a first direction, a plurality of screen holes (111) provided in the screen portion (11), and a pressing mechanism (20) movably arranged in the storage container (10). The printing glue device further comprises a cutting mechanism (30) comprising a cutting portion (31). When the pressing mechanism (20) moves in the first direction towards the screen portion (11) to fill the storage cavity (12) with glue, the cutting portion (31) removes the glue extruded through the screen holes (111) on the screen portion (11).

2. The glue stamping device of claim 1, wherein, An outer surface of the cutting portion (31) is covered with a hydrophobic layer. The cutting mechanism (30) further comprises a driving member connected with the cutting portion (31), and the driving member is used to drive the cutting portion (31) to move on a side of the screen portion (11) away from the pressing mechanism (20).

3. The glue stamping device of claim 2, wherein, The storage container (10) is provided with an exhaust port (14) in communication with the storage cavity (12).

4. The glue stamping apparatus of claim 2, wherein The exhaust port (14) is provided with a first switch member (51) used to open or close the exhaust port (14), or the exhaust port (14) is provided with an exhaust pipe (50) provided with a first switch member (51).

5. The glue stamping device of claim 1, wherein, The storage container (10) is provided with a feeding port (13) in communication with a glue supply container (70), and the feeding port (13) is in communication with the storage cavity (12).

6. The glue stamping device of claim 5, wherein, The feeding port (13) is provided with a feeding pipe (40), one end of the feeding pipe (40) away from the feeding port (13) is used to communicate with the glue supply container (70), and the feeding pipe (40) is provided with a second switch member (41).

7. The glue stamping apparatus of claim 1, wherein The printing glue device further comprises a sealing cover (60) arranged on the screen portion (11) when glue is added into the storage cavity (12) and air in the storage cavity (12) is discharged.

8. The glue stamping apparatus of claim 7, wherein, The pressing mechanism (20) comprises a piston in sealing cooperation with an inner side wall of the storage container (10), and the piston can move in the side wall of the storage container (10) towards or away from the screen portion (11).

9. The glue stamping device according to any one of claims 1 to 8, characterized in that ​ 10. The glue stamping device according to any one of claims 1 to 8, wherein ​

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