Printing steel mesh placing rack for SMT (Surface Mount Technology)

Abstract

The utility model relates to the technical field of printing steel mesh placing racks for SMT, and discloses a printing steel mesh placing rack for SMT, which comprises a plurality of groups of placing plates arranged in parallel, printing steel meshes are arranged on the placing plates in a sliding manner, pulleys are arranged below the placing plates and are used for moving the placing plates, connecting rods are fixedly arranged on the placing plates, and the connecting rods are connected with the printing steel meshes. A fixing assembly is arranged on the connecting rod and used for fixing the printing steel mesh; the limiting and fixing mechanism comprises a first limiting baffle fixedly arranged on one side of the containing plate, a limiting assembly is arranged in the first limiting baffle and used for limiting and fixing the printing steel mesh, a second limiting baffle in the limiting assembly can slide in the first limiting baffle, and through cooperation of a pressing block, a fixing rod and a spring, the position of the second limiting baffle can be flexibly adjusted and locked; the rack can adapt to printing steel meshes of different sizes, and universality of the rack is improved.

Description

TECHNICAL FIELD

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

[0002] In the SMT production process, a jig called "printing steel net" is needed, which has through holes corresponding to the pads on the PCB. In the printing process, solder paste will be printed onto the corresponding pads on the PCB through the through holes. The positions of the pads on different models of PCBs are different, so corresponding printing steel nets are needed to meet the printing requirements. Therefore, manufacturers will customize various models of printing steel nets to meet production requirements. When a certain model of printing steel net is not needed temporarily, it needs to be stored. When a certain model of printing steel net is needed, it needs to be taken out. Therefore, how to design a printing steel net placing frame for SMT not only facilitates the storage of multiple printing steel nets, but also facilitates the taking out of a certain model of printing steel net.

[0003] After searching, the prior art (publication number: CN218802222U) printing steel net placing frame for SMT, which is recorded in the document "support body, support assembly and material taking assembly, the support assembly is installed on the support body, the support assembly is used for erecting printing steel net, the material taking assembly is rotationally arranged on the support body. Among them, the support assembly includes a linkage rod, and the material taking assembly includes a plurality of installation levers, and the plurality of installation levers are arranged on the linkage rod of the support assembly in intervals". The utility model realizes the convenient and fast taking out of the printing steel net.

[0004] However, although the prior art realizes the convenient and fast taking out of the printing steel net, it still has some shortcomings: the steel net cannot be stably stored, and the steel net shakes and is damaged. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a printing steel net placing frame for SMT.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a printing steel net placing frame for SMT, a placing frame body assembly, including multiple groups of placing plates arranged in parallel, a printing steel net is slidably arranged on the placing plate, a pulley is arranged below the placing plate for moving the placing plate, a connecting rod is fixedly arranged on the placing plate, a fixing assembly is arranged on the connecting rod for fixing the printing steel net; a limiting and fixing mechanism, including a limiting baffle one arranged on one side of the placing plate, a limiting assembly is arranged in the limiting baffle one for limiting and fixing the printing steel net.

[0007] As a further description of the above technical solutions:

[0008] The fixing assembly comprises: transverse limiting grooves arranged above the placement plate in multiple groups; a guard plate fixedly arranged on the connecting rod; and vertical limiting grooves fixedly arranged on the guard plate in multiple groups.

[0009] As a further description of the above technical solutions:

[0010] The printing steel net slides on the placement plate, and the bottom of the printing steel net is arranged between the two groups of transverse limiting grooves, and one side of the printing steel net is clamped between the two groups of vertical limiting grooves, so as to limit the shaking of the printing steel net.

[0011] As a further description of the above technical solutions:

[0012] The limiting assembly is provided in multiple groups and is uniformly fixedly arranged on one side of the placement plate.

[0013] As a further description of the above technical solutions:

[0014] The limiting assembly comprises: a limiting baffle two that slides in the limiting baffle one, and the limiting baffle two can abut against one side of the printing steel net away from the guard plate, so as to limit the position of the printing steel net; a pressing block that penetrates and is slidingly connected to the limiting baffle two; a fixed rod that is fixedly arranged on both sides of the pressing block; and a spring that is fixedly connected to one end of the limiting baffle two and is arranged at one end of the pressing block and abuts against the spring, so as to reset the pressing block; and a pull ring that is fixedly arranged above the limiting baffle two, so as to pull the limiting baffle two.

[0015] As a further description of the above technical solutions:

[0016] The length of the fixed rod is greater than the diameter of the spring, so as to compress the spring.

[0017] As a further description of the above technical solutions:

[0018] The limiting baffle one is provided with multiple groups of holes, the pressing block is pressed, the pressing block is disengaged from penetration of one group of holes, one end of the pressing block away from the spring is attached to the inner wall of the limiting baffle one and slides to another group of holes, and one end of the pressing block away from the spring penetrates the hole, so that the limiting baffle one and the limiting baffle two are locked again, so as to adjust the locking position of the limiting baffle one and the limiting baffle two.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] 1. The fixing assembly limits the shaking of the printing steel net from the bottom and the side through the transverse limiting grooves and the vertical limiting grooves, so that the printing steel net is placed stably, and the guard plate enhances the fixity and stability.

[0021] 2. The limiting baffle two in the limiting assembly can slide in the limiting baffle one, and the position of the limiting baffle two can be flexibly adjusted and locked through the cooperation of the pressing block, the fixed rod and the spring, so that the versatility of the placing rack can be improved by adapting to different sizes of printing steel meshes. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 A whole schematic view of a printing steel mesh placing rack for SMT is provided in the utility model;

[0023] Fig. 2 A placing plate schematic view of a printing steel mesh placing rack for SMT is provided in the utility model;

[0024] Fig. 3 A limiting baffle schematic view of a printing steel mesh placing rack for SMT is provided in the utility model;

[0025] Fig. 4 A fixed assembly schematic view of a printing steel mesh placing rack for SMT is provided in the utility model.

[0026] Legend: 11, placing plate; 12, connecting rod; 15, transverse limiting groove; 13, guard plate; 14, vertical limiting groove; 3, pulley; 4, printing steel mesh; 21, limiting baffle one; 22, limiting baffle two; 23, pressing block; 24, spring; 25, fixed rod; 26, pull ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Embodiment 1:

[0029] As shown in the drawing, the printing steel mesh placing rack for SMT provided in the embodiment comprises a placing rack body assembly, a limiting and fixing mechanism and a fixed assembly. Figs. 1 to 4 The placing rack body assembly comprises multiple groups of placing plates 11 arranged in parallel, the printing steel mesh 4 is slidably arranged on the placing plate 11, the pulley 3 is arranged below the placing plate 11 and used for moving the placing plate 11, the connecting rod 12 is fixedly arranged on the placing plate 11, and the fixed assembly is arranged on the connecting rod 12 and used for fixing the printing steel mesh 4.

[0030] In the embodiment, the placing plate 11 and the fixing assembly constitute the printing screen placing rack device for SMT involved in the application, and the printing screen for SMT in the application can be used as long as SMT screen placing is needed, and the application does not limit the specific SMT screen category.

[0031] In the embodiment, the pulley 3 enables the placing plate 11 to be movable, the printing screen 4 slides on the placing plate 11, and the fixing assembly fixes the printing screen 4 through the horizontal limiting groove 15 and the vertical limiting groove 14.

[0032] In the embodiment, the limiting baffle one 21 is fixedly arranged on one side of the placing plate 11, so as to avoid the printing screen from shaking or falling on the placing rack.

[0033] It should be noted that the fixing assembly is used to stably fix the printing screen 4 placed on the placing plate 11, so as to ensure that the printing screen does not displace during the placing process.

[0034] Specifically, the fixing assembly comprises: the horizontal limiting groove 15, which is fixedly arranged above the placing plate 11 in multiple groups; the guard plate 13, which is fixedly arranged on the connecting rod 12; and the vertical limiting groove 14, which is fixedly arranged on the guard plate 13 in multiple groups.

[0035] In the embodiment, the printing screen 4 is placed between the horizontal limiting grooves 15 at the bottom and is clamped between the vertical limiting grooves 14 on one side, so as to limit the shaking of the printing screen 4 and ensure that the printing screen 4 is stably placed on the placing plate 11.

[0036] Specifically, the printing screen 4 slides on the placing plate 11, the bottom of the printing screen 4 is arranged between the two groups of horizontal limiting grooves 15, and one side of the printing screen 4 is clamped between the two groups of vertical limiting grooves 14, so as to limit the shaking of the printing screen 4.

[0037] As a preferred implementation manner, the horizontal limiting groove 15 and the vertical limiting groove 14 are used to limit the printing screen 4, so as to prevent the printing screen 4 from shaking.

[0038] Embodiment 2:

[0039] On the basis of the embodiment 1, in order to further improve the stability of the fixing assembly, the spring 24 is arranged in the limiting baffle two 22.

[0040] Specifically, the limiting assembly is provided with multiple groups and is fixedly arranged on one side of the placing plate 11.

[0041] It should be noted that the limiting assembly is provided with multiple groups and is arranged on one side of the placing plate 11, so as to fasten and limit the printing screen 4 after the printing screen 4 is placed in batches.

[0042] Specifically, the limiting assembly comprises: a limiting baffle two 22 sliding in the interior of the limiting baffle one 21, and the limiting baffle two 22 can abut against one side of the printing steel mesh 4 away from the guard plate 13, for limiting the position of the printing steel mesh 4; a pressing block 23 penetrating and slidingly connected to the limiting baffle two 22; a fixed rod 25 fixedly arranged on both sides of the pressing block 23; a spring 24 one end of which is fixedly connected to the interior of the limiting baffle two 22 and the other end of which is arranged on one end of the pressing block 23 and abuts against the fixed rod 25, for resetting the pressing block 23; and a pull ring 26 fixedly arranged above the limiting baffle two 22, for pulling the limiting baffle two 22.

[0043] As a preferable embodiment, the pull ring 26 is pulled to drive the limiting baffle two 22 to slide and abut against one side of the printing steel mesh 4 away from the guard plate 13, thereby fixing the position of the printing steel mesh 4; the pressing block 23 can slide on the limiting baffle two 22, and the position of the limiting baffle two 22 is locked by cooperating with the holes on the limiting baffle one 21; and the spring 24 is used for resetting the pressing block 23.

[0044] Specifically, the length of the fixed rod 25 is greater than the diameter of the spring 24 for compressing the spring 24.

[0045] It should be noted that the fixed rod 25 compresses the spring 24 when the pressing block 23 moves, stores elastic potential energy, and provides power for resetting the pressing block 23.

[0046] Specifically, a plurality of groups of holes are arranged on the limiting baffle one 21; when the pressing block 23 is pressed, the pressing block 23 is disengaged from one group of holes, and the end of the pressing block 23 away from the spring 24 is adhered to the inner wall of the limiting baffle one 21 and slides to another group of holes; and the end of the pressing block 23 away from the spring 24 penetrates the hole, so that the limiting baffle one 21 and the limiting baffle two 22 are locked again, for adjusting the locking position of the limiting baffle one 21 and the limiting baffle two 22.

[0047] In the embodiment, the pressing block 23 is pressed to be disengaged from the holes on the limiting baffle one 21, slides to another group of holes and penetrates again, so as to adjust the locking position of the limiting baffle one 21 and the limiting baffle two 22.

[0048] In use, the operator places the printing steel mesh 4 into the vertical limiting groove 14 and the horizontal limiting groove 15 through the placement plate 11 for limiting, presses the pressing block 23 after placement, takes out the limiting baffle two 22 from the slot hole of the limiting baffle one 21, and fixes the pressing block 23 in the hole of the limiting baffle one 21 when the limiting baffle two 22 is taken to the appropriate position, so as to limit the printing steel mesh 4.

[0049] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A printing screen stand for SMT, characterized in that: The utility model relates to a printing screen placing rack for SMT, which comprises a placing rack body assembly, a limiting and fixing mechanism and a fixing assembly. The placing rack body assembly comprises a plurality of groups of placing plates (11) arranged in parallel, a printing screen (4) sliding on the placing plates (11), a pulley (3) arranged below the placing plates (11) for moving the placing plates (11), and a connecting rod (12) fixed on the placing plates (11) and provided with the fixing assembly for fixing the printing screen (4). The limiting and fixing mechanism comprises a limiting baffle I (21) arranged on one side of the placing plates (11), and a limiting assembly arranged in the limiting baffle I (21) for limiting and fixing the printing screen (4).

2. The printing screen placing rack for SMT according to claim 1, wherein the fixing assembly comprises: a plurality of groups of horizontal limiting grooves (15) fixed above the placing plates (11); a guard plate (13) fixed on the connecting rod (12); and a plurality of groups of vertical limiting grooves (14) fixed on the guard plate (13).

3. The printing screen placing rack for SMT according to claim 2, wherein the printing screen (4) slides on the placing plates (11), the bottom of the printing screen (4) is arranged between two groups of horizontal limiting grooves (15), and one side of the printing screen (4) is clamped between two groups of vertical limiting grooves (14) for limiting the shaking of the printing screen (4).

4. The printing screen placing rack for SMT according to claim 3, wherein the limiting assembly is provided with a plurality of groups of limiting assemblies fixed on one side of the placing plates (11).

5. The printing screen placing rack for SMT according to claim 4, wherein the limiting assembly comprises: a limiting baffle II (22) sliding in the limiting baffle I (21), which can abut against one side of the printing screen (4) away from the guard plate (13) for limiting the position of the printing screen (4); a pressing block (23) penetrating and slidingly connected to the limiting baffle II (22); a fixing rod (25) fixed on both sides of the pressing block (23); and a spring (24) having one end fixedly connected to the inside of the limiting baffle II (22) and the other end arranged on one end of the pressing block (23) and abutting against the fixing rod (25) for resetting the pressing block (23), and a pull ring (26) fixed above the limiting baffle II (22) for pulling the limiting baffle II (22).

6. The printing screen placing rack for SMT according to claim 5, wherein the length of the fixing rod (25) is greater than the diameter of the spring (24) for compressing the spring (24).

7. The printing screen placing rack for SMT according to claim 6, wherein ​ ​ ​ ​ ​ The limiting baffle one (21) is provided with multiple groups of holes, the pressing block (23) is pressed, the pressing block (23) is not penetrated with one group of holes, the end of the pressing block (23) away from the spring (24) is attached to the inner wall of the limiting baffle one (21) and is slid to another group of holes, and the end of the pressing block (23) away from the spring (24) is penetrated with the hole to make the limiting baffle one (21) and the limiting baffle two (22) locked again, for adjusting the locking position of the limiting baffle one (21) and the limiting baffle two (22).

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