SMT (Surface Mount Technology) steel mesh printing mesh frame jig

Abstract

The utility model belongs to the technical field of net rack jigs, and particularly relates to an SMT steel net printing net rack jig which comprises a jig base, and the upper surface of the jig base is fixedly connected with a jig frame. During use, an SMT steel mesh frame to be printed is placed in the jig frame, the support plate supports the mesh frame, the servo motor is started to enable the transmission shaft to drive the driving bevel gear to rotate, the driving bevel gear and the driven bevel gear are in mutual transmission, the rotating rod can rotate anticlockwise to drive the pair of racks to move synchronously, and the clamping plates get close to each other along the outer wall of the guide rod; the left-right position of the net rack is limited under clamping of the clamping plate, the position of the net rack on the supporting plate is adjusted front and back to enable the net rack to be located in the center, the pressing plate is rotated to be located above the net rack, the spring pushes the disc when the hand is loosened, the sliding rod drives the pressing plate to descend and be tightly attached to the net rack, and front-back movement during printing is reduced. And alignment with the center is facilitated, the fixing effect is improved, and the follow-up printing effect is not prone to being affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of net frame fixture, specifically to a kind of SMT steel mesh printing net frame fixture. BACKGROUND

[0002] Steel mesh is originally made of silk screen, so it is called screen plate at that time. It is nylon (polyester) screen at first, then iron wire screen and copper wire screen appear due to durability, and finally stainless steel wire screen. But no matter what material silk screen is, it has the shortcomings of poor forming and low precision. With the development of SMT, the requirement for screen plate is increasing, and steel mesh is produced accordingly. In SMT operation, steel mesh is an indispensable jig for printing (solder paste, red glue), and one steel mesh must be used for each type of PCB.

[0003] Chinese patent CN201920025534.8 discloses an SMT steel mesh printing net frame jig with high stability for integrated circuits, which comprises a jig frame. The jig frame has a sliding groove on the left and right side walls. A sliding block is transversely arranged on the inner wall of the sliding groove, and a limiting block is welded at both ends of the sliding block. An adjusting rod is welded on one side of the limiting block and is connected with the jig frame through the sliding block and the sliding groove. A second sleeve is welded inside the adjusting rod, and a second fixed rod is arranged through the inner wall of the second sleeve. Threaded structures are arranged on the inner wall of the second sleeve and the outer wall of the second fixed rod, and the threaded structures of the second sleeve and the second fixed rod are matched with each other. A net frame fixing block is bonded to one end of the second fixed rod. The SMT steel mesh printing net frame jig with high stability for integrated circuits is connected with the jig frame through the adjusting rod, which is convenient for the staff to adjust the fixing position of the net frame fixing block according to the size of the net frame, thereby improving the use range of the net frame jig and the fixing effect of the net frame.

[0004] The device clamps the steel mesh by manually rotating two fixed rods. Manual rotation can cause displacement of the fixed block, and the fixed steel mesh is difficult to be located at the center position, which is not convenient to adjust and can affect the subsequent printing effect.

[0005] Therefore, an SMT steel mesh printing net frame jig is proposed. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide an SMT steel mesh printing net frame jig to solve the problems in the background technology.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a kind of SMT steel screen printing screen frame jig, including jig base, the upper surface of the jig base is fixedly connected with jig frame, the upper surface of the jig base is rotatably connected with rotating rod, the outer lateral wall of the rotating rod is fixedly connected with central gear, the inner side of the jig frame is equipped with a pair of rack, the rack is engaged with the central gear, the outer lateral wall of the rack is fixedly connected with clamping plate, the inner lateral wall of the jig frame is fixedly connected with a pair of guide rod, the outer lateral wall of the guide rod is slidably connected with the inner lateral wall of the rack and the inner lateral wall of the clamping plate, the side of the clamping plate close to the central gear is fixedly connected with support plate, the inner lateral wall of the clamping plate is slidably connected with disc, the upper surface of the disc is fixedly connected with slide rod, the outer lateral wall of the slide rod is slidably connected with the inner lateral wall of the clamping plate, spring is fixedly connected between the upper surface of the disc and the inner lateral wall upper side of the clamping plate, the upper end of the slide rod is fixedly connected with pressing plate.

[0008] As further preferred of the technical scheme: the outer lateral wall of the rotating rod is fixedly connected with driven bevel gear, the right side wall of the jig frame is rotatably connected with transmission shaft, the left end of the transmission shaft is fixedly connected with driving bevel gear, the driving bevel gear is engaged with the driven bevel gear.

[0009] As further preferred of the technical scheme: the upper surface of the jig base is installed with servo motor, and the output end of the servo motor is fixedly connected to the left end of the transmission shaft.

[0010] As further preferred of the technical scheme: the upper surface of the pressing plate is fixedly connected with pull rod.

[0011] As further preferred of the technical scheme: the upper surface of the clamping plate is fixedly connected with a pair of limit plates.

[0012] As further preferred of the technical scheme: the lower surface of the pressing plate is bonded with rubber pad.

[0013] Compared with prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses a support plate is to the net frame support, starts servo motor and makes transmission shaft drive driving bevel gear rotation, and driving bevel gear and driven bevel gear are mutual transmission, can make the rotation pole anticlockwise rotation drive a pair of rack synchronous movement, and the clamping plate is along the outer wall of guide rod and is close to each other, and the left and right position of net frame is limited under the clamping of clamping plate, and the position of net frame on support plate is adjusted, and it is located the center, and the pressing plate is rotated and is located the net frame above, and when the hand is loose, the spring pushes the disc, and the pressing plate is driven down and is close to the net frame through the slide bar, and the front and back movement is reduced when printing, and the center alignment is convenient through the rack synchronous movement cooperation top clamping, and the fixed effect is improved, and the subsequent printing effect is not easy to influence. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view structure schematic diagram of the utility model;

[0016] Figure 2 It is the structure schematic diagram of clamping plate, guide rod and support plate in the utility model;

[0017] Figure 3 It is the sectional structure schematic diagram of disc, slide bar and spring in the utility model;

[0018] Figure 4 It is the structure schematic diagram of transmission shaft, driving bevel gear and driven bevel gear in the utility model.

[0019] In the drawing: 1, jig base; 2, jig frame; 3, rotation pole; 4, center gear; 5, rack; 6, clamping plate; 7, guide rod; 8, support plate; 9, disc; 10, slide bar; 11, spring; 12, pressing plate; 13, driven bevel gear; 14, transmission shaft; 15, driving bevel gear; 16, servo motor; 17, pull rod; 18, limit plate; 19, rubber pad. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings of the embodiments of the utility model, and the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below are exemplary and are only used to explain the application, and cannot be understood as limiting the application. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] In the description of the present application, it should be noted that unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] Please refer to Figures 1-4 The utility model provides a technical scheme: a kind of SMT steel screen printing net rack jig, including jig base 1, the upper surface of jig base 1 is fixedly connected with jig frame 2, the upper surface of jig base 1 is rotatably connected with rotating rod 3, the outer side wall of rotating rod 3 is fixedly connected with center gear 4, the inner side of jig frame 2 is equipped with a pair of rack 5, rack 5 is engaged with center gear 4, the outer side wall of rack 5 is fixedly connected with clamping plate 6, the inner side wall of jig frame 2 is fixedly connected with a pair of guide rod 7, the outer side wall of guide rod 7 is slidably connected with the inner side wall of rack 5 and the inner side wall of clamping plate 6, the side of clamping plate 6 close to center gear 4 is fixedly connected with support plate 8, the inner side wall of clamping plate 6 is slidably connected with disc 9, the upper surface of disc 9 is fixedly connected with slide bar 10, the outer side wall of slide bar 10 is slidably connected with the inner side wall of clamping plate 6, the upper surface of disc 9 and the inner side wall upper side of clamping plate 6 are fixedly connected with spring 11, the upper end of slide bar 10 is fixedly connected with pressing plate 12;When using, first pull pressing plate 12 and rotate to the side away from support plate 8, the SMT steel screen net rack to be printed is placed into jig frame 2, SMT steel screen net rack is supported by support plate 8, rotating rod 3 is rotated counterclockwise to drive a pair of rack 5 to move synchronously, so that clamping plate 6 is close to each other along the outer wall of guide rod 7, and the left and right positions of SMT steel screen net rack are limited under the clamping of clamping plate 6, the position of SMT steel screen net rack on support plate 8 is adjusted forward and backward to make it be located at the center, pressing plate 12 is rotated to be located above SMT steel screen net rack, when hand is released, spring 11 pushes disc 9, pressing plate 12 is driven to descend by slide bar 10 and is attached to SMT steel screen net rack, reduces the forward and backward movement of SMT steel screen net rack when printing, is convenient for alignment with center by synchronous movement of rack 5 and top clamping, improves the fixing effect, and subsequent printing effect is not easy to affect.

[0023] In the embodiment, specifically: the outer side wall of rotating rod 3 is fixedly connected with driven bevel gear 13, the right side wall of jig frame 2 is rotatably connected with transmission shaft 14, the left end of transmission shaft 14 is fixedly connected with driving bevel gear 15, and driving bevel gear 15 is engaged with driven bevel gear 13;Rotating transmission shaft 14 drives driving bevel gear 15, and driving bevel gear 15 and driven bevel gear 13 are driven by each other, so that rotating rod 3 drives center gear 4 to rotate.

[0024] In this embodiment, specifically: the upper surface of the jig base 1 is provided with a servo motor 16, and the output end of the servo motor 16 is fixedly connected to the left end of the transmission shaft 14; the servo motor 16 is used for driving the transmission shaft 14 to rotate.

[0025] In this embodiment, specifically: the upper surface of the pressing plate 12 is fixedly connected with a pull rod 17; the pull rod 17 facilitates the user to pull the pressing plate 12.

[0026] In this embodiment, specifically: the upper surface of the clamping plate 6 is fixedly connected with a pair of limiting plates 18; the limiting plates 18 can limit the direction of the clamping plate 6, so that the clamping plate 6 is not easy to rotate.

[0027] In this embodiment, specifically: the lower surface of the pressing plate 12 is bonded with a rubber pad 19; the rubber pad 19 can buffer, reduce the loss caused by extrusion, and has an anti-skid effect, reducing sliding.

[0028] The working principle of the utility model is: in use, first pull the pressing plate 12 and rotate 180 DEG, make its far away from the one side of support plate 8, put the SMT steel net truss to be printed into jig frame 2, pass through support plate 8 and support SMT steel net truss, start servo motor 16 and make transmission shaft 14 drive driving bevel gear 15 rotate, driving bevel gear 15 and driven bevel gear 13 are mutually driven, can make the rotation lever 3 counterclockwise rotation drive a pair of rack 5 synchronous movement, clamping plate 6 is close to each other along the outer wall of guide rod 7, under the clamping of clamping plate 6, limit SMT steel net truss left and right position, front and back adjustment SMT steel net truss on support plate 8, make it be located in the center, rotate the pressing plate 12 and make it be located above SMT steel net truss, when hand is released, spring 11 pushes disc 9, through slide rod 10 drive pressing plate 12 and descend and stick to SMT steel net truss, reduce SMT steel net truss when printing front and back movement, through rack 5 synchronous movement cooperation top clamping, it is convenient with center alignment, has improved the fixed effect, is not easy to influence subsequent printing effect.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An SMT steel screen printing screen frame jig, comprising a jig base (1), characterized in that: The upper surface of the tool base (1) is fixedly connected with a tool frame (2), the upper surface of the tool base (1) is rotatably connected with a rotating rod (3), the outer side wall of the rotating rod (3) is fixedly connected with a central gear (4), the inner side of the tool frame (2) is provided with a pair of racks (5), the rack (5) is engaged with the central gear (4), the outer side wall of the rack (5) is fixedly connected with a clamping plate (6), the inner side wall of the tool frame (2) is fixedly connected with a pair of guide rods (7), the outer side wall of the guide rod (7) is slidably connected with the inner side wall of the rack (5) and the inner side wall of the clamping plate (6), the side of the clamping plate (6) close to the central gear (4) is fixedly connected with a support plate (8), the inner side wall of the clamping plate (6) is slidably connected with a disc (9), the upper surface of the disc (9) is fixedly connected with a sliding rod (10), the outer side wall of the sliding rod (10) is slidably connected with the inner side wall of the clamping plate (6), the upper surface of the disc (9) and the upper side of the inner side wall of the clamping plate (6) are fixedly connected with a spring (11), the upper end of the sliding rod (10) is fixedly connected with a pressing plate (12).

2. The SMT steel screen printing screen frame jig according to claim 1, characterized in that: The outer side wall of the rotating rod (3) is fixedly connected with a driven bevel gear (13), the right side wall of the tool frame (2) is rotatably connected with a transmission shaft (14), the left end of the transmission shaft (14) is fixedly connected with a driving bevel gear (15), the driving bevel gear (15) is engaged with the driven bevel gear (13).

3. The SMT steel screen printing screen frame jig according to claim 2, characterized in that: The upper surface of the tool base (1) is provided with a servo motor (16), and the output end of the servo motor (16) is fixedly connected to the left end of the transmission shaft (14).

4. The SMT steel screen printing screen frame jig according to claim 1, characterized in that: The upper surface of the pressing plate (12) is fixedly connected with a pull rod (17).

5. The SMT steel screen printing screen frame jig according to claim 1, characterized in that: The upper surface of the clamping plate (6) is fixedly connected with a pair of limiting plates (18).

6. The SMT steel screen printing screen frame jig according to claim 1, characterized in that: The lower surface of the pressing plate (12) is bonded with a rubber pad (19).

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