CN110774735A

CN110774735A - High accuracy electronic components silk screen printing device

Info

Publication number: CN110774735A
Application number: CN201911206720.2A
Authority: CN
Inventors: 孙永光
Original assignee: Hunan Wangji Electronic Technology Co Ltd
Current assignee: Hunan Wangji Electronic Technology Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-02-11

Abstract

The invention discloses a high-precision electronic component screen printing device which comprises a base, wherein the upper end of the base is connected with a workbench through an upright post, a screen printing area is arranged in the middle of the upper end of the workbench, a pushing device which moves synchronously is arranged on the workbench, and the pushing device takes the screen printing area as an axis and is in an annular array; a base is arranged on one side of the upper end of the workbench, a vertically lifting support is arranged on the base, opposite clamping arms are arranged on one side of the screen printing area of the support, the rear ends of the clamping arms are in threaded connection with an adjusting screw rod, the adjusting screw rod is horizontally arranged in a sliding groove at the side end of the support, and one end of the adjusting screw rod penetrates through a bearing in the support and is connected with a handle outside the support; the clamping arm is provided with a clamping seat which slides along the length direction of the clamping arm. The invention aims to provide a high-precision electronic component silk-screen device which can quickly complete the fixation of a circuit board and the installation of a silk screen plate so as to improve the silk-screen efficiency of the circuit board.

Description

High accuracy electronic components silk screen printing device

Technical Field

The invention relates to the field of circuit board processing, in particular to a high-precision electronic component screen printing device.

Background

The electronic components need to use a large number of circuit boards, in order to facilitate subsequent processes such as assembly and the like, names, position frames and the like of parts need to be marked on the circuit boards, the conventional marking process adopts a silk-screen technology to print required marking patterns, character codes and the like on the circuit boards, but the circuit boards are thinner and the end faces of the circuit boards are planes compared with other products, so that the circuit boards cannot be fixed by adopting a common mode of matching positioning bosses with grooves, the existing mode is that a datum line and a positioning column are set on a workbench before printing, then an operator places the circuit boards on the workbench by contrasting the datum line and then carries out silk-screen printing, but the efficiency is low and slight difference easily occurs in the silk-screen positions of the circuit boards in the same batch because the operator needs to manually align before each circuit board is silk-screen printed; meanwhile, different batches of production need different printed contents and circuit board specifications are different, so that different batches of silk screen plates needed by silk screen printing are different, different clamps need to be selected and used before silk screen printing according to production needs, the clamps are installed on a silk screen printing machine, when the clamps are installed on the silk screen printing machine, the clamps need to be adjusted according to positions of printing stocks, and the whole process is complicated and multiple specifications of clamps need to be prepared.

Disclosure of Invention

The invention aims to solve the problems and provides a high-precision electronic component silk-screen device which can quickly fix a circuit substrate and automatically replace a silk-screen surface.

In order to realize the purpose, the invention adopts the technical scheme that: the automatic printing device comprises a base, wherein the upper end of the base is connected with a workbench through an upright post, a silk screen area is arranged in the middle of the upper end of the workbench, a pushing device which moves synchronously is arranged on the workbench, the pushing device takes the silk screen area as an axis and is in an annular array, and the pushing devices arranged around a substrate move simultaneously to ensure that the position of the substrate is fixed during the same batch production; in order to enable the silk screen plate to be rapidly contacted with a positioned substrate, a base is arranged on one side of the upper end of the workbench, a support is arranged on the base and is pushed by an air cylinder, an oil cylinder and the like to vertically lift, opposite clamping arms are arranged on one side of the silk screen area of the support, the clamping arms are respectively arranged on two sides of the silk screen plate to clamp, the rear end of each clamping arm extends into a chute at the front end of the support and is in threaded connection with an adjusting screw, the adjusting screw is arranged along the length direction of the support, a rotating shaft at one end of the adjusting screw penetrates through a bearing in the support and is connected with a handle on the outer side of the support, the position of the clamping arm in the horizontal direction can be adjusted by rotating the adjusting screw, and the adjusting screw can adopt a double-headed screw to realize synchronous movement of the clamping arms or two clamping arms are respectively in threaded connection; the clamping arms are provided with clamping seats which slide along the length direction of the clamping arms, the clamping seats on the two sides are arranged oppositely, and the clamping seats extend out of the clamping arms on one side of the screen plate.

Further, in order to realize the synchronous movement of the pushing device and the positioning function of the circuit board, the pushing device comprises a sliding plate which penetrates through a long hole arranged on the workbench and slides in the long hole, in order to enable the sliding plate to slide in the horizontal direction, the lower end of the sliding plate is hinged with a connecting rod, the lower end of the connecting rod is hinged with a lifting seat, the lifting seat is driven by an oil cylinder, a motor and the like to reciprocate in the vertical direction, and the lifting seat and the workbench are coaxially arranged; in order to adapt to circuit boards of different specifications, an adjustable push plate is arranged at the upper end of the mounting plate, and the upper end surface of the push plate is higher than that of the workbench; meanwhile, the push plate is arranged on the mounting plate for avoiding the impact of the clamping arm on the push plate in the descending process, and the lower end of the mounting plate is connected with the sliding plate through a spring.

Furthermore, in order to accurately control the movement of the lifting seat, a motor is arranged at the upper end of the base, an output shaft of the motor is in transmission connection with a vertically arranged lifting screw, and the lifting screw is in threaded connection with the lifting seat.

Furthermore, a guide post is arranged on the base and penetrates through the lifting seat, so that the lifting seat can be lifted stably.

Further, in order to adjust and fix the position of the push plate, a locking screw is arranged on the mounting plate and penetrates through a waist-shaped hole in the push plate, a locking nut is connected to the locking screw through threads above the push plate, and the outer diameter of the locking nut is larger than the inner diameter of the waist-shaped hole.

Furthermore, when the lifting seat is lifted up and down, in order to ensure that the sliding plate can horizontally slide and is not lifted up and down together with the lifting seat, a horizontal sliding groove is arranged on the side wall of the elongated hole, and a sliding key matched with the sliding groove is arranged on the outer wall of the sliding plate; or a limiting plate can be arranged on the sliding plate and arranged at the upper end and the lower end of the workbench to prevent the sliding plate from being separated from the strip hole.

Further, the sliding key is provided with a roller to reduce friction.

Furthermore, in order to conveniently take the circuit board, object supporting columns are arranged at the upper end of the workbench in the silk-screen area array.

Further, in order to adjust the position of the clamping seat, the side end of the clamping arm is provided with a strip-shaped groove along the length direction of the clamping arm, one end of the clamping seat is in threaded connection with a lead screw in the strip-shaped groove, the lead screw is arranged along the length direction of the clamping arm, and one end of the lead screw extends out of the clamping arm and is connected with the handle.

Furthermore, in order to respectively adjust the two clamping arms, two adjusting screws are arranged in the support, and the two adjusting screws are respectively in threaded connection with the clamping arms on the two sides.

The invention has the beneficial effects that: the pushing devices are arranged in an annular array by taking the screen printing area as a center, and move simultaneously to push the circuit boards, so that the circuit boards produced in the same batch are in the same position during screen printing; after the circuit board is fixed, the silk screen plate descends to contact with the circuit board, and then the scraper blade can be held by hand to conduct silk screen printing operation, so that the situation that the silk screen plate needs to be manually placed on the circuit board every time is avoided, and operation intensity is reduced.

1. When the lifting seat is lifted up and down, the pushing devices around the circuit board are driven to move together by the connecting rods hinged on the sliding plate; the drive structure is simplified on the premise of ensuring the synchronous movement of the sliding plate.

2. The push plate used for pushing the circuit board can be adjusted on the mounting plate along the length direction of the strip hole, so that the distance between the push plate and the circuit board can be adjusted according to actual production conditions.

3. The clamping arms are in threaded connection with a screw rod in the support, and the distance between the clamping arms on the two sides is adjusted by rotating the screw rod, so that the wire mesh plate is suitable for wire mesh plates with different specifications; meanwhile, the clamping seat slides along the length direction of the clamping arm, so that the position of the wire mesh plate on the Y axis in the horizontal plane can be adjusted; after the silk screen plate is fixed, the silk screen plate and the support are lifted up and down together to quickly finish silk screen printing.

Drawings

FIG. 1 is a schematic side view of the present invention.

Figure 2 is a schematic view of a push plate installation.

FIG. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic view of the structure of the sliding plate and the workbench.

FIG. 5 is a schematic top view of the support.

Fig. 6 is a front view (direction a in fig. 1) of the support.

Fig. 7 is a schematic view of the clamp arm structure (direction B in fig. 5).

The text labels in the figures are represented as: 1. a base; 2. a column; 3. a work table; 4. a silk-screen area; 5. a base; 6. a support; 7. a clamp arm; 8. adjusting the screw rod; 9. a chute; 10. a handle; 11. a clamping seat; 12. a strip hole; 13. a sliding plate; 14. a spring; 15. mounting a plate; 16. pushing the plate; 17. a connecting rod; 18. a lifting seat; 19. a motor; 20. a lifting screw; 21. a guide post; 22. locking the screw rod; 23. a kidney-shaped hole; 24. a lock nut; 25. a sliding groove; 26. a sliding key; 27. a roller; 28. a supporting column; 29. a strip-shaped groove; 30. a screw rod; 31. a handle.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 7, the specific structure of the present invention is: the automatic printing device comprises a base 1, wherein the upper end of the base 1 is connected with a workbench 3 through a stand column 2, a screen printing area 4 is arranged in the middle of the upper end of the workbench 3, pushing devices which move synchronously are arranged on the workbench 3, and the pushing devices are arranged in an annular array by taking the screen printing area 4 as an axis; a base 5 is arranged on one side of the upper end of the workbench 3, a vertically lifting support 6 is arranged on the base 5, opposite clamping arms 7 are arranged on one side of the screen printing area 4 of the support 6, the clamping arms 7 are horizontally arranged and parallel to a pushing device on one side, the rear end of each clamping arm 7 is in threaded connection with an adjusting screw 8, the adjusting screw 8 is horizontally arranged in a chute 9 at the side end of the support 6, rotating shafts at two ends of the adjusting screw 8 are connected with bearings in the support 6, and one end of the adjusting screw 8 penetrates through the bearings in the support 6 to be connected with a handle 10 outside the support 6; the clamping arm 7 is provided with a clamping seat 11 which slides along the length direction of the clamping arm, and the clamping seats 11 on the two sides are arranged oppositely.

Preferably, the pushing device comprises a long hole 12 with open upper and lower ends and a sliding plate 13 sliding in the long hole 12, the long hole 12 is arranged on the workbench 3, the upper end of the sliding plate 13 is connected with a mounting plate 15 through a spring 14, in order to enable the mounting plate 15 to be stably lifted, a groove is arranged at the upper end of the sliding plate 13, the spring 14 is arranged at the bottom of the groove, the mounting plate 15 can be inserted into the groove, a push plate 16 is arranged at the upper end of the mounting plate 15, the push plate 16 is used for pushing the circuit board, the push plate 16 is arranged along the length direction of the long hole 12 where the push plate is located, a connecting rod 17 is hinged at the lower end of the sliding plate 13, the lower end of the connecting rod 17 is hinged with a lifting seat 18, and the lifting seat 18 and the.

Preferably, the upper end of the base 1 is provided with a motor 19, an output shaft of the motor 19 is in transmission connection with a vertically arranged lifting screw 20, the lifting screw 20 is in threaded connection with the lifting seat 18, and in order to ensure the stability of the lifting screw 20, the upper end of the lifting screw 20 is connected with a bearing seat at the lower end of the workbench 3.

Preferably, a guide post 21 is arranged on the base 1, the guide post 21 vertically penetrates through the lifting seat 18, and the upper end of the guide post 21 is connected with the lower end of the workbench 3.

Preferably, as shown in fig. 2, a locking screw 22 is arranged on the mounting plate 15, the locking screw 22 passes through a waist-shaped hole 23 on the push plate 16, a locking nut 24 is connected to the locking screw 22 in a threaded manner above the push plate 16, the waist-shaped hole 23 is arranged along the length direction of the strip hole 12 where the waist-shaped hole is located, and the outer diameter of the locking nut 24 is greater than the inner diameter of the waist-shaped hole 23.

Preferably, as shown in fig. 4, a horizontal sliding groove 25 is provided on a side wall of the elongated hole 12, and a sliding key 26 adapted to the sliding groove 25 is provided on an outer wall of the sliding plate 13.

Preferably, as shown in fig. 4, the sliding key 26 is provided with a roller 27, and the roller 27 is in contact with the sliding groove 25.

Preferably, the object supporting columns 28 are arranged at the upper end of the workbench 3 in the screen printing area 4 in an array manner, and when the push plate 16 is closest to the screen printing area, a certain distance is required to be still left between the object supporting columns 28 at the outermost side.

Preferably, the centre gripping arm 7 side is provided with rectangular shape groove 29 along its length direction, the lead screw 30 threaded connection in 11 one end of grip slipper and the rectangular shape groove 29, the lead screw 30 sets up and its both ends are connected with the bearing in the grip slipper 7 along the grip slipper 7 length direction, the grip slipper 7 is stretched out to lead screw 30 one end and is connected with handle 31, grip slipper 11 is connected for the keyway with rectangular shape groove 29.

Preferably, two adjusting screws 8 are arranged in the support 1, and the two adjusting screws 8 are respectively in threaded connection with the clamping arms 7 on the two sides.

The specific using process is as follows: an operator places the circuit board on the upper end of the workbench 3, keeps four edges of the circuit board and the corresponding side walls of the push plate 16 basically horizontal when placing the circuit board, and only needs to keep an included angle between the four edges and the corresponding side walls of the push plate 16 excessively large, then the lifting seat 18 descends, and the push plate 16 is driven to move towards the circuit board through the traction of the connecting rod 17 until the push plates 16 on the periphery of the circuit board are all in horizontal contact with the side walls of the circuit board, so that the circuit board is; according to the fixed position of the circuit board, the clamping arms 7 are driven to move by rotating the handle 10, and the clamping seat 11 is driven to move by rotating the handle 31, so that the position of the wire mesh plate fixed between the clamping arms 7 at the two sides is adjusted to be matched with the position of the circuit board below; after the steps are completed, the support 6 descends to enable the silk screen plate to be in contact with the circuit board, and an operator can use the scraper plate to conduct silk screen printing.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the above technical features may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. A high-precision electronic component silk-screen device comprises a base (1) and is characterized in that the upper end of the base (1) is connected with a workbench (3) through an upright post (2), a silk-screen area (4) is arranged in the middle of the upper end of the workbench (3), a pushing device which moves synchronously is arranged on the workbench (3), and the pushing device is in an annular array by taking the silk-screen area (4) as an axis; a base (5) is arranged on one side of the upper end of the workbench (3), a vertically lifting support (6) is arranged on the base (5), opposite clamping arms (7) are arranged on one side of the screen printing area (4) of the support (6), the rear ends of the clamping arms (7) are in threaded connection with an adjusting screw rod (8), the adjusting screw rod (8) is horizontally arranged in a sliding groove (9) at the side end of the support (6), and one end of the adjusting screw rod (8) penetrates through a bearing in the support (6) to be connected with a handle (10) on the outer side of the support (6); the clamping arm (7) is provided with a clamping seat (11) which slides along the length direction of the clamping arm.

2. A high accuracy electronic components silk screen printing device according to claim 1, characterized in that, the thrust unit includes a long hole (12) with open upper and lower ends and a sliding plate (13) sliding in the long hole (12), the upper end of the sliding plate (13) is connected with a mounting plate (15) through a spring (14), the upper end of the mounting plate (15) is provided with an adjustable push plate (16), the lower end of the sliding plate (13) is hinged with a connecting rod (17), the lower end of the connecting rod (17) is hinged with a lifting seat (18), and the lifting seat (18) is coaxial with the silk screen printing area (4) and reciprocates in the vertical direction.

3. The high-precision electronic component screen printing device according to claim 2, wherein a motor (19) is arranged at the upper end of the base (1), an output shaft of the motor (19) is in transmission connection with a vertically arranged lifting screw (20), and the lifting screw (20) is in threaded connection with the lifting base (18).

4. A high accuracy electronic components silk screen printing device according to claim 3, characterized in that, base (1) is provided with guide pillar (21), and guide pillar (21) passes lift seat (18).

5. A high accuracy electronic components silk screen printing device as claimed in claim 2, characterized in that, mounting plate (15) is provided with lock screw (22), lock screw (22) passes waist type hole (23) on push pedal (16), lock nut (24) is connected with screw thread on lock screw (22) above push pedal (16).

6. A high accuracy electronic components silk screen printing device according to claim 2, characterized in that, a horizontal sliding groove (25) is provided on the side wall of the elongated hole (12), and a sliding key (26) adapted to the sliding groove (25) is provided on the outer wall of the sliding plate (13).

7. A high accuracy electronic components silk screen printing device according to claim 6, characterized in that, sliding key (26) is provided with gyro wheel (27).

8. A high accuracy electronic components silk screen printing device as claimed in claim 1, characterized in that, the upper end of workstation (3) is provided with support posts (28) in silk screen printing district (4) array.

9. A high accuracy electronic components silk screen printing device as claimed in claim 1, characterized in that, the centre gripping arm (7) side end is provided with rectangular groove (29) along its length direction, grip slipper (11) one end and lead screw (30) threaded connection in rectangular groove (29), lead screw (30) are provided along centre gripping arm (7) length direction, lead screw (30) one end is stretched out centre gripping arm (7) and is connected with handle (31).

10. A high accuracy electronic components silk screen printing device as claimed in claim 1, characterized in that, two adjusting screw rods (8) are arranged in the support (6), and the two adjusting screw rods (8) are respectively in threaded connection with the clamping arms (7) at both sides.