Positioning tool for printing screen

Abstract

The present application provides a positioning tool for a printing screen, comprising two positioning members arranged in parallel along the front-to-back direction, and each positioning member comprises a guide rail, two clamping members and a synchronous drive member; wherein, the guide rail has two slide grooves and a support plate on the side facing the printing screen; the two clamping members are respectively slidably connected in the two slide grooves, and the upper side surface of each clamping member has a groove; the synchronous drive member is arranged on the guide rail, and is transmission-connected with the two clamping members; in actual use, the front and rear ends of the screen frame are respectively supported on the two support plates; at the same time, the synchronous drive member can drive the two clamping members to move toward or away from each other to clamp or loosen the screen frame, thereby fixing the position of the printing screen. The positioning tool for a printing screen provided by the present application can realize the limiting of the printing screen relative to the base, and by controlling the distance that the two clamping members move toward each other, the tool can be adapted to printing screens of different specifications.

Description

Technical Field

[0001] The present application belongs to the technical field of screen printing, and specifically relates to a positioning tool for a printing screen. Background Art

[0002] Solar cells can convert light energy into electrical energy under the irradiation of sunlight, and are a new energy component with clean and environmentally friendly characteristics. In the existing solar cell production process, a printing screen is required to extrude the slurry into a predetermined shape onto the substrate to complete the formation of the electrode.

[0003] In order to avoid displacement during the use of the printing screen, the surface of the existing base is usually provided with a limiting structure adapted to the printing screen to limit the horizontal movement of the printing screen.

[0004] The inventors have found that the existing limiting structures are usually protrusions fixed on the base, which cannot adapt to printing screens of different sizes (usually different widths); and, a gap is usually used between the screen frame of the printing screen and the aforementioned protrusions. The larger the gap, the worse the limiting effect of the printing screen, and the smaller the gap, the more difficult it is to ensure the safety of the printing screen.

[0005] In summary, there is an urgent need in the prior art for a positioning tool that is suitable for printing screens of different specifications and can limit the position of the printing screen relative to a base. Utility Model Content

[0006] The embodiment of the present application provides a positioning tool for a printing screen, which can achieve the limitation of the printing screen relative to the base and can be adapted to printing screens of different specifications.

[0007] To achieve the above purpose, the technical solution adopted in this application is:

[0008] Provided is a positioning tool for a printing screen, comprising two positioning members spaced apart in a front-to-rear direction, and each of the positioning members comprises:

[0009] A guide rail, which is used to be fixedly arranged on the base, and is located at the front side or the rear side of the printing screen; the guide rail has two slide grooves on the side facing the printing screen, and each of the slide grooves extends in the left-right direction; and the guide rail also has a support plate on the side facing the printing screen;

[0010] Two clamping members are arranged on the side of the guide rail facing the printing screen, and are respectively slidably connected in the two slide grooves along the left and right directions; the upper side surfaces of the two clamping members are each provided with a groove suitable for the corner end of the screen frame to be embedded, and the bottom of the groove is coplanar with the upper side surface of the support plate; and

[0011] The synchronous driving component is arranged on the guide rail and is drivingly connected with the two clamping members so as to drive the two clamping members to move toward each other or away from each other.

[0012] In a possible implementation, the longitudinal section of the slide groove is T-shaped, and the clamping member has a sliding block suitable for slidingly engaging in the slide groove;

[0013] Among them, the bottom of each of the slide grooves has a strip hole extending in the left-right direction, and the sliding block has a protrusion suitable for passing through the strip hole and extending out; the synchronous driving component is arranged on the side of the guide rail facing away from the printing screen, and it is transmission connected with the protruding ends of the two protrusions.

[0014] In a possible implementation, the synchronous driving component includes:

[0015] A guide rod, fixedly arranged on a side of the guide rail facing away from the printing screen, located between the two strip holes, and extending in the front-to-back direction; a transmission member is slidably connected to the guide rod in the front-to-back direction, and a locking member is provided between the transmission member and the guide rail; the locking member abuts against the transmission member to limit the transmission member from moving toward the guide rail; and

[0016] Two connecting rods are respectively arranged on the left and right sides of the transmission member, and both ends of each connecting rod are respectively hinged with the transmission member and the protruding portion on the same side along the up-down direction;

[0017] When the locking member moves away from the guide rail, the locking member can push the transmission member to move synchronously, so that the two connecting rods swing and the two clamping members move toward each other.

[0018] In a possible implementation, the outer peripheral wall of the guide rod has an external thread structure, and the locking member includes:

[0019] a cylinder body, which is slidably sleeved on the guide rod in the front-rear direction, is coaxially arranged with the guide rod, and is suitable for rotating with the guide rod as the axis; and

[0020] A locking nut is fixedly connected to the cylinder and is threadedly connected to the guide rod.

[0021] In a possible implementation, one end of the cylinder facing the front-rear direction has a receiving groove, and the locking nut is fixedly embedded in the receiving groove.

[0022] In a possible implementation, an end cap is threadedly connected to the end of the guide rod, and the end cap is used to abut against the transmission member to limit the transmission member from being separated from the guide rod.

[0023] In a possible implementation, a ring is further provided between the transmission member and the locking member; the ring is made of an elastic material, is slidably sleeved on the guide rod, and its two sides facing the front and rear directions are respectively connected with the transmission member and the locking member;

[0024] Wherein, when the two clamping members move toward each other until the two corner ends of the screen frame are respectively embedded in the corresponding two grooves, the transmission member abuts against the locking member through the collar, and the collar is in an elastic deformation state.

[0025] In a possible implementation manner, the collar is fixedly connected to the transmission member or the locking member.

[0026] In a possible implementation, the upper side of the support plate also has a vertical plate; the vertical plate is used to abut the end surface of the screen frame facing the front-to-back direction, and the side of the vertical plate facing the printing screen is coplanar with the inner side surface of the groove facing the front-to-back direction.

[0027] In a possible implementation, when the corner end of the screen frame is embedded in the groove and abuts against the bottom of the groove, the upper side surface of the clamping member is coplanar with the upper side surface of the screen frame;

[0028] Furthermore, the upper side surface of each of the clamping members is coplanar with the upper side surface of the guide rail.

[0029] In the embodiment of the present application, the two positioning members cooperate to limit the horizontal movement of the printing screen relative to the base; specifically, one end of the base facing the front-to-back direction is first placed on the support plate, and then the two clamping members are driven to move toward each other through a synchronous driving component; since the bottom of the groove is coplanar with the upper side of the support plate, the two clamping members can move toward each other until the two corner ends of the screen frame facing the left and right directions are respectively embedded in the two grooves, so as to limit the horizontal movement of the printing screen by clamping the screen frame through the inner wall of the groove.

[0030] Compared with the prior art, the positioning tool for printing screen provided in this embodiment can realize the limitation of the printing screen relative to the base, and by controlling the distance that the two clamps move toward each other, the tool can be adapted to printing screens of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 One of the three-dimensional structural schematic diagrams of the positioning tool for the printing screen provided in the embodiment of the present application;

[0033] Figure 2 for Figure 1 A partial enlarged schematic diagram of the upper circle A;

[0034] Figure 3 The second schematic diagram of the three-dimensional structure of the positioning tool for the printing screen provided in the embodiment of the present application;

[0035] Figure 4 The third schematic diagram of the three-dimensional structure of the positioning tool for the printing screen provided in the embodiment of the present application;

[0036] Figure 5 A schematic diagram of the three-dimensional structure of the clamping member used in the embodiment of the present application;

[0037] Figure 6 This is a schematic diagram of the exploded structure of the transmission member, the locking member and the collar used in the embodiment of the present application;

[0038] Explanation of the reference numerals: 1. guide rail; 11. slide groove; 12. support plate; 121. vertical plate; 13. strip hole; 2. clamping member; 21. groove; 22. slider; 221. protrusion; 3. synchronous drive member; 31. guide rod; 311. end cap; 32. connecting rod; 4. transmission member; 5. locking member; 51. cylinder; 511. receiving groove; 52. locking nut; 6. sleeve ring; 100. mesh frame. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] It should be explained first that the printing screen is a flat structure with mesh holes arranged on a base, and the printing screen has a screen frame 100 arranged around it; in the present embodiment, the printing screen has a length direction and a width direction, and for the sake of ease of description, the length direction, width direction and thickness direction of the printing screen are defined as the front-to-back direction, the left-to-right direction and the up-down direction, respectively.

[0044] Please also read Figures 1 to 6 The positioning tool for printing screen provided by the present application is now described. The positioning tool for printing screen provided by the present application comprises two positioning members arranged on a base at intervals along the front-back direction; wherein the spacing between the two positioning members can be fixed or adjustable; and in actual assembly, the spacing between the two positioning members is usually designed to be fixed to obtain better structural strength and to adapt to printing screens of the same length and different specifications (i.e., different widths).

[0045] In this embodiment, each positioning member includes a guide rail 1 , two clamping members 2 and a synchronous driving component 3 .

[0046] The guide rail 1 is used to be fixedly set on the base, and is located on the front side or the rear side of the printing screen; the side of the guide rail 1 facing the printing screen has two slide grooves 11, and each slide groove 11 extends in the left and right direction; and the side of the guide rail 1 facing the printing screen also has a support plate 12, and this support plate 12 is used to support the front end or the rear end of the screen frame 100.

[0047] The two clamping members 2 are arranged on the side of the guide rail 1 facing the printing screen, and are respectively connected to the two slide grooves 11 in a sliding manner along the left and right directions; the upper side surfaces of the two clamping members 2 have grooves 21 suitable for the corner ends of the screen frame 100 to be embedded, and the bottom of the groove 21 is coplanar with the upper side surface of the support plate 12, so that when the two clamping members 2 move relative to each other, the screen frame 100 supported on the support plate 12 can enter or exit the groove 21.

[0048] It should be specifically explained that, in this embodiment, the groove 21 is formed on the upper side of the clamping member 2 and passes through the corner end of the clamping member 2 facing the printing screen.

[0049] The synchronous driving member 3 is arranged on the guide rail 1 and is drivingly connected with the two clamping members 2 so as to drive the two clamping members 2 to move toward each other or away from each other.

[0050] In the embodiment of the present application, the two positioning members cooperate to limit the horizontal movement of the printing screen relative to the base; specifically, one end of the base facing the front-to-back direction is first placed on the support plate 12, and then the two clamping members 2 are driven to move toward each other by the synchronous driving member 3; since the bottom of the groove 21 is coplanar with the upper side of the support plate 12, the two clamping members 2 can move toward each other until the two corner ends of the screen frame 100 facing the left and right directions are respectively embedded in the two grooves 21, so as to limit the horizontal movement of the printing screen by clamping the screen frame 100 through the inner wall of the groove 21.

[0051] Compared with the prior art, the positioning tool for printing screen provided in this embodiment can realize the limitation of the printing screen relative to the base, and by controlling the distance of the two clamping members 2 moving toward each other, the tool can be adapted to printing screens of different specifications.

[0052] It should be noted that, in the prior art, printing screens of different specifications usually have the same length and different widths; therefore, even if the spacing between the two guide rails 1 is fixed, the tooling can still achieve adaptation to printing screens of different specifications.

[0053] In some embodiments, Figures 3 to 5 As shown, the longitudinal section of the slide groove 11 is T-shaped, and the clamping member 2 has a slider 22 suitable for slidingly engaging in the slide groove 11; through the sliding engagement relationship between the slider 22 and the slide groove 11, the sliding connection relationship between the clamping member 2 and the guide rail 1 is realized.

[0054] The bottom of each slide groove 11 has a strip hole 13 extending in the left-right direction, and the slider 22 has a protrusion 221 suitable for passing through the strip hole 13 and extending out; the synchronous drive component 3 is arranged on the side of the guide rail 1 facing away from the printing screen, and it is transmission-connected with the protruding ends of the two protrusions 221, avoiding occupation of the guide rail 1 facing the printing screen area, thereby improving the stability of the tooling in actual use.

[0055] In some embodiments, Figures 1 to 4 As shown, the synchronous driving member 3 includes a guide rod 31 and two connecting rods 32 .

[0056] The guide rod 31 is fixedly arranged on a side of the guide rail 1 facing away from the printing screen, is located between the two strip holes 13, and extends in the front-to-back direction.

[0057] In this embodiment, a transmission member 4 is slidably connected to the guide rod 31 along the front-rear direction, and a locking member 5 is provided between the transmission member 4 and the guide rail 1; in actual use, the locking member 5 abuts against the transmission member 4 to limit the transmission member 4 from moving toward the guide rail 1.

[0058] The two connecting rods 32 are respectively arranged on the left and right sides of the transmission member 4 , and both ends of each connecting rod 32 are respectively hinged to the transmission member 4 and the protrusion 221 on the same side along the up-down direction.

[0059] By adopting the above technical solution, when the locking member 5 moves away from the guide rail 1, the locking member 5 can push the transmission member 4 to move synchronously, so that the two connecting rods 32 swing and the two clamping members 2 move toward each other.

[0060] In some embodiments, Figure 2 and Figure 6 As shown, the outer peripheral wall of the guide rod 31 has an external thread structure, and the locking member 5 includes a cylinder 51 and a locking nut 52.

[0061] The barrel 51 is slidably sleeved on the guide rod 31 along the front-rear direction, is coaxially arranged with the guide rod 31, and is suitable for rotating around the guide rod 31 as an axis.

[0062] The locking nut 52 is fixedly connected to the cylinder 51 and is threadedly connected to the guide rod 31 .

[0063] By adopting the above technical solution, when the cylinder 51 is rotated manually, the locking nut 52 rotates synchronously to rotate forward or backward relative to the guide rod 31, thereby adjusting the position of the locking member 5 relative to the guide rod 31.

[0064] In some embodiments, Figure 6 As shown, one end of the cylinder 51 facing the front-rear direction has a receiving groove 511, and the locking nut 52 is fixedly embedded in the receiving groove 511, thereby limiting the relative rotation of the cylinder 51 and the locking nut 52.

[0065] In some embodiments, Figure 3 As shown, an end cap 311 is threadedly connected to the end of the guide rod 31, and the end cap 311 is used to abut the transmission member 4 to limit the transmission member 4 from separating from the guide rod 31, thereby improving the structural reliability of the device.

[0066] In some embodiments, Figure 2 As shown, there is a sleeve ring 6 between the transmission member 4 and the locking member 5; the sleeve ring 6 is made of elastic material, which is slidably sleeved on the guide rod 31, and its two sides facing the front and rear directions are respectively connected with the transmission member 4 and the locking member 5.

[0067] By adopting the above technical solution, when the two clamping members 2 move toward each other until the two corner ends of the screen frame 100 are respectively embedded in the corresponding two grooves 21, the transmission member 4 abuts against the locking member 5 through the ring 6, and the ring 6 is in an elastic deformation state, thereby facilitating temporary removal and regular cleaning of the printing screen.

[0068] In some embodiments, Figure 2 and Figure 6 As shown, the collar 6 is fixedly connected to the transmission member 4 or the locking member 5 to move synchronously with the movement of the transmission member 4 or the locking member 5, thereby preventing the collar 6 made of elastic material from buckling and deforming along the axial direction of the guide rod 31.

[0069] In some embodiments, Figure 3 As shown, the upper side of the support plate 12 also has a vertical plate 121; the vertical plate 121 is used to abut the end surface of the screen frame 100 facing the front and rear direction, and the side of the vertical plate 121 facing the printing screen is coplanar with the inner side surface of the groove 21 facing the front and rear direction.

[0070] When placing the screen frame 100 on the support plate 12, the front or rear end of the screen frame 100 can be abutted against the vertical plate 121, so as to realize the positioning of the screen frame 100 relative to the groove 21 in the front-back direction, eliminating the fine-tuning process after the corner end of the screen frame 100 is embedded in the groove 21.

[0071] In some embodiments, Figure 1 and Figure 3 As shown, when the corner end of the screen frame 100 is embedded in the groove 21 and abuts against the bottom of the groove 21, the upper side surface of the clamping member 2 is coplanar with the upper side surface of the screen frame 100, thereby ensuring the connection strength between the clamping member 2 and the screen frame 100 and preventing the clamping member 2 from extending to the upper side of the screen frame 100, thereby avoiding affecting the normal use of the printing screen.

[0072] Furthermore, the upper side surface of each clamping member 2 is coplanar with the upper side surface of the guide rail 1, so as to ensure the structural strength of the guide rail 1 and the clamping member 2 and further avoid the influence of the guide rail 1 on the normal use of the printing screen.

[0073] The above content is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A positioning tool for a printing screen, wherein the printing screen is arranged on a base, and the printing screen has a screen frame arranged around it; the printing screen has a length direction and a width direction, and the length direction and the width direction are defined as a front-to-back direction and a left-to-right direction, respectively; characterized in that: The positioning tool comprises two positioning members spaced apart in the front-to-back direction, and each of the positioning members comprises: A guide rail, which is used to be fixedly arranged on the base, and is located at the front side or the rear side of the printing screen; the guide rail has two slide grooves on the side facing the printing screen, and each of the slide grooves extends in the left-right direction; and the guide rail also has a support plate on the side facing the printing screen; Two clamping members are arranged on the side of the guide rail facing the printing screen, and are respectively slidably connected in the two slide grooves along the left and right directions; the upper side surfaces of the two clamping members are each provided with a groove suitable for the corner end of the screen frame to be embedded, and the bottom of the groove is coplanar with the upper side surface of the support plate; and The synchronous driving component is arranged on the guide rail and is drivingly connected with the two clamping members so as to drive the two clamping members to move toward each other or away from each other.

2. The positioning tool for printing screen according to claim 1, characterized in that: The longitudinal section of the slide groove is T-shaped, and the clamping member has a sliding block suitable for slidingly engaging in the slide groove; Among them, the bottom of each of the slide grooves has a strip hole extending in the left-right direction, and the sliding block has a protrusion suitable for passing through the strip hole and extending out; the synchronous driving component is arranged on the side of the guide rail facing away from the printing screen, and it is transmission connected with the protruding ends of the two protrusions.

3. The positioning tool for printing screen according to claim 2, characterized in that: The synchronous driving component comprises: A guide rod, fixedly arranged on a side of the guide rail facing away from the printing screen, located between the two strip holes, and extending in the front-to-back direction; a transmission member is slidably connected to the guide rod in the front-to-back direction, and a locking member is provided between the transmission member and the guide rail; the locking member abuts against the transmission member to limit the transmission member from moving toward the guide rail; and Two connecting rods are respectively arranged on the left and right sides of the transmission member, and both ends of each connecting rod are respectively hinged with the transmission member and the protruding portion on the same side along the up-down direction; When the locking member moves away from the guide rail, the locking member can push the transmission member to move synchronously, so that the two connecting rods swing and the two clamping members move toward each other.

4. The positioning tool for printing screen according to claim 3, characterized in that: The outer peripheral wall of the guide rod has an external thread structure, and the locking member includes: a cylinder body, which is slidably sleeved on the guide rod in the front-rear direction, is coaxially arranged with the guide rod, and is suitable for rotating with the guide rod as the axis; and A locking nut is fixedly connected to the cylinder and is threadedly connected to the guide rod.

5. The positioning tool for printing screen according to claim 4, characterized in that: One end of the cylinder body facing the front-rear direction is provided with a receiving groove, and the locking nut is fixedly embedded in the receiving groove.

6. The positioning tool for printing screen according to claim 4, characterized in that: An end cap is threadedly connected to the end of the guide rod, and the end cap is used to abut against the transmission member to limit the transmission member from being separated from the guide rod.

7. The positioning tool for printing screen according to any one of claims 3 to 6, characterized in that: A sleeve is also provided between the transmission member and the locking member; the sleeve is made of elastic material, is slidably sleeved on the guide rod, and its two sides facing the front and rear directions are respectively connected with the transmission member and the locking member; Wherein, when the two clamping members move toward each other until the two corner ends of the screen frame are respectively embedded in the corresponding two grooves, the transmission member abuts against the locking member through the collar, and the collar is in an elastic deformation state.

8. The positioning tool for printing screen according to claim 7, characterized in that: The collar is fixedly connected to the transmission member or the locking member.

9. The positioning tool for printing screen according to claim 1, characterized in that: The upper side of the support plate also has a vertical plate; the vertical plate is used to abut the end surface of the screen frame facing the front and rear direction, and the side of the vertical plate facing the printing screen is coplanar with the inner side surface of the groove facing the front and rear direction.

10. The positioning tool for printing screen according to claim 1, characterized in that: When the corner end of the screen frame is embedded in the groove and abuts against the bottom of the groove, the upper side surface of the clamping member is coplanar with the upper side surface of the screen frame; Furthermore, the upper side surface of each of the clamping members is coplanar with the upper side surface of the guide rail.

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