CN104202915A - Chip mounter delivery mechanism allowing delivery of multi-size PCBs (Printed Circuit Board) - Google Patents

Abstract

The invention discloses a transfer mechanism of a placement machine, which comprises guide rails (11; 12) parallel to each other, and also includes a moving device connected to a frame (90), on which the guide rail (12) is installed, The mobile device mainly includes a rack and pinion mechanism (50), and the rack and pinion mechanism (50) includes a guide rail (51; 52), a slide bar (53), a gear (54) and a rack (55), and the guide rail (51; 52) Offer a chute on the top, slide bar (53) slides in the chute, tooth bar (55) is installed on the guide rail (51; 52), and gear (54) is installed on the slide bar (53). In this way, the distance between the guide rails is adjustable, and the guide rails can hold PCB boards of various sizes, that is, the PCB transfer mechanism of the present invention can transfer PCB boards of various sizes, and the placement machine where the PCB transfer mechanism is located can be used for each PCB boards of various sizes can be mounted to improve the utilization rate of the placement machine.

Description

A placement machine transfer mechanism capable of transferring multi-size PCB boards

Technical field:

The invention relates to surface mount technology, in particular to a transfer mechanism of a placement machine capable of transferring multi-size PCB boards.

Background technique:

Surface Mount Technology (English full name Surface Mount Technology, referred to as SMT), is currently the most popular technology and process in the electronics assembly industry. It is a method of mounting non-pin or short-lead surface mount components (SMC/SMD in English, chip components in Chinese) on the surface of a printed circuit board (full name in English, Printed Circuit Board, PCB for short) or other substrates. On the surface, it is a circuit assembly technology that is soldered and assembled by methods such as reflow soldering or dip soldering.

The placement machine is a device used to achieve high-speed and high-precision placement of chip components. It is configured after the dispenser or screen printing machine, and the surface mount components are accurately placed on the PCB by moving the placement head. on the plate. The placement machine is the electronic manufacturing equipment with the largest value proportion, the highest technical content, and the greatest impact on the entire assembly production capacity and efficiency among the entire SMT production equipment.

Today, as the world's leading manufacturing base of electronic information products, the output of many electronic and electrical products produced in China has ranked first in the world. Along with this wave of manufacturing, SMT technology has been widely used in China's computers, network communications, consumer electronics, and automotive electronics. China's SMT industry is ushering in a golden period in the history of development.

However, the development level of SMT equipment in our country needs to be improved. At present, in addition to the ability to manufacture a certain level of screen printing machines, welding and cleaning equipment, it is also impossible to manufacture high-performance placement machine system equipment. With the development of the times, the gap between my country and foreign countries in terms of SMT technology is constantly expanding. Therefore, the research and development of placement machines with my country's independent intellectual property rights has a major impact on the development of my country's electronic information industry and even the national development strategy. significance.

Application number 201110378524.0, application date of November 24, 2011 The invention application discloses a simple placement machine, including a chassis, the chassis is equipped with a Y-axis transmission mechanism, and the Y-axis transmission mechanism is equipped with an X-axis transmission mechanism. There is a patch head on the X-axis transmission mechanism, a feeder is provided on one side of the chassis and the Y-axis transmission mechanism, and the chassis is also connected to the operation platform. The linkage movement drives the movement of the placement head. When working, the placement head moves back and forth between the feeder and the PCB board, and the components are taken out from the feeder. After adjusting the position and direction of the components, the automatic placement work is realized.

Although the above invention application has the feature of saving labor costs, the invention application does not disclose relevant information about how the PCB board enters the placement machine.

In the prior art, generally, the PCB board is sent into the placement machine by the PCB conveying mechanism, and the PCB board is positioned under the placement head, so that the placement head can mount the PCB board. However, in the prior art, the PCB transfer mechanism that only has fixed-size PCB boards can no longer meet the needs of actual production, because the size of the PCB board is different, how to make the PCB transfer mechanism adapt to PCBs of various sizes board, the utilization rate of the placement machine can be improved, otherwise. A placement machine can only mount a fixed size PCB.

Invention content:

The technical problem solved by the present invention: the PCB conveying mechanism in the mounter in the prior art only has the function of conveying fixed-sized PCBs, and cannot satisfy the conveying of PCBs of various sizes.

The present invention provides the following technical solutions: a placement machine transmission mechanism capable of transmitting multi-size PCB boards, including a guide rail 1 and a guide rail 2 parallel to each other, a conveyor belt is installed on the guide rail 1 and guide rail 2, and the guide rail 1 is fixed on rack. The transmission mechanism also includes a mobile device connected to the frame, the second guide rail is installed on the mobile device, and the second guide rail can be along a direction perpendicular to the first guide rail in the plane formed by the first guide rail and the second guide rail. Move, the moving device includes a sliding track, a slider that can slide on the sliding track, a rack and pinion mechanism for driving the slider, the second guide rail is installed on the slider, and the rack and pinion The mechanism includes three guide rails and four guide rails, a slide bar, a gear and a rack. There are slide grooves on the guide rail three and guide rail four, and the slide bar slides in the slide groove. On, the gear is installed on the slide bar.

According to the above technical solution, the PCB board is conveyed by the conveyor belt, and the conveyor belt is installed on the first guide rail and the second guide rail, that is, the PCB board is clamped between the first guide rail and the second guide rail. Guide rail 1 is fixed on the frame, and guide rail 2 can move along the direction perpendicular to guide rail 1 in the plane formed by guide rail 1 and guide rail 2 under the action of the moving device. In this way, the distance between guide rail 1 and guide rail 2 is adjustable. Guide rail one and guide rail two can clamp PCB boards of various sizes, that is, the PCB transfer mechanism of the present invention can transfer PCB boards of various sizes, and the placement machine where the PCB transfer mechanism is located can handle various sizes of PCB boards. Small and large PCB boards are mounted to improve the utilization rate of the placement machine.

As a further description of the present invention, the moving device includes a sliding track, a slider that can slide on the sliding track, a rack and pinion mechanism for driving the slider, and the second guide rail is installed on the slider. The rack and pinion mechanism includes three guide rails and four guide rails, a slide bar, a gear and a rack. The three guide rails and the four guide rails are provided with chute, the slide bar slides in the chute, and the rack is installed on On guide rail three and guide rail four, described gear is installed on the slide bar. Rotate the slide bar or the gear on the slide bar, the gear rotates on the rack, and slides along the chute on the guide rail three and guide rail four with the slide bar, so as to drive the slide block to slide along the slide track, so that the guide rail two Move horizontally.

As a further improvement of the present invention, a rotating handle is installed at one end of the sliding rod. In this way, the operator can manually drive the slide bar to slide in the chute, which not only saves the input of electric power, but also makes the whole transmission mechanism simple in structure and easy to operate.

As a further description of the present invention, a bar-shaped groove is opened in the guide rail 4, and an annular limit block is installed on the slide bar, and the limit block is engaged in the bar-shaped groove. As a preference, the bar-shaped The grooves have a rectangular or square cross-section. Such improvement can prevent the sliding rod from moving axially.

As a further description of the present invention, a bearing is installed on the sliding rod, a connecting rod is installed on the bearing, and the connecting rod is connected with the sliding block. In this way, during the process of rotating and moving linearly in the chute driven by the gear, the sliding bar can drive the sliding block to slide linearly on the sliding track.

As a specific description of the present invention, the third guide rail and the fourth guide rail are installed on the frame.

Description of drawings:

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is a schematic structural diagram of a placement machine transmission mechanism capable of transmitting multi-size PCB boards according to the present invention;

Fig. 2 is the structural representation of rack and pinion mechanism in Fig. 1;

Fig. 3 is the structural schematic diagram obtained from observing the rack and pinion mechanism from the upper left in Fig. 2;

FIG. 4 is a schematic structural view of the rack and pinion mechanism viewed from the upper right in FIG. 2 .

Explanation of symbols in the figure:

11 - guide rail; 12 - guide rail;

20 - conveyor belt;

30 - sliding track;

40 - slider;

50 - rack and pinion mechanism; 51 - guide rail; 511 - chute; 512 - groove; 52 - guide rail; 521 - chute; 522 - groove; 523 - bar groove; 53 - slide bar; 54 - gear; 55-rack; 56-rotary handle; 57-annular limit block; 58-bearing; 59-connecting rod;

90 - Rack.

Detailed ways:

As shown in Figure 1 , a transfer mechanism of a placement machine includes a guide rail 11 and a guide rail 2 12, a sliding track 30 connected to the frame 90, a slider 40 that can slide on the sliding track 30, and It is used to drive the rack and pinion mechanism 50 of the slider 40 .

As shown in FIG. 1 , the first guide rail 11 and the second guide rail 12 are parallel to each other, and a conveyor belt 20 is installed on the first guide rail 11 and the second guide rail 12 . The first guide rail 11 is fixed on the frame 90 , and the second guide rail 12 is installed on the slider 40 .

As shown in FIGS. 2 to 4 , the rack and pinion mechanism 50 includes guide rails three 51 and four guide rails 52 installed on the frame 90 , a slide bar 53 , a gear 54 and a rack 55 . The third guide rail 51 and the fourth guide rail 52 are parallel to each other and located on the same horizontal plane. The third guide rail 51 is provided with a sliding groove 511 and a groove 512 , and the fourth guide rail 52 is provided with a sliding groove 521 and a groove 522 . The rack 55 is installed on the horizontal plane of the groove 512 and the groove 522 . The gear 54 is installed at both ends of the slide bar 53 . The gear 54 meshes with the rack 55 , and the slide bar 53 slides in the slide groove 511 and the slide groove 521 . A rotating handle 56 is mounted on one end of the slide bar 53 .

As shown in FIG. 2 , a bar-shaped groove 523 is opened in the guide rail 4 52 , and an annular limiting block 57 is installed on the sliding rod 53 , and the limiting block 57 is engaged in the bar-shaped groove 523 . Wherein, the cross section of the strip groove 523 is rectangular or square.

As shown in FIGS. 2-4 , a bearing 58 is mounted on the sliding rod 53 , and a connecting rod 59 is mounted on the bearing 58 , and the connecting rod 59 is connected to the sliding block 40 .

In actual operation, the operator moves the rotary handle 56, the slide bar 53 rotates, the gear 54 fixedly mounted on the slide bar 53 rotates on the rack 55 and moves linearly, and the slide bar 53 slides in the chute 511 and the chute 521 , the slide bar 53 drives the slider 40 to move, so that the second guide rail 12 can move along the direction perpendicular to the first guide rail 11 in the plane formed by the first guide rail 11 and the second guide rail 12 .

The above content is only the preferred implementation mode of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and application scope. limits.

Claims (6)

1. the chip mounter connecting gear that can transmit many sizes pcb board, comprise the guide rail one (11) and the guide rail two (12) that are parallel to each other, on described guide rail one (11) and guide rail two (12), conveyer belt (20) is installed, described guide rail one (11) is fixed in frame (90), it is characterized in that: also comprise the mobile device being connected in frame (90), described guide rail two (12) is arranged on described mobile device, in the plane that described guide rail two (12) can form with guide rail two (12) at guide rail one (11), along the direction vertical with guide rail one (11), move, described mobile device comprises sliding rail (30), can be at the upper slide block (40) sliding of described sliding rail (30), be used for driving the pinion and rack (50) of described slide block (40), described guide rail two (12) is arranged on slide block (40), described pinion and rack (50) comprises guide rail three (51) and guide rail four (52), slide bar (53), gear (54) and tooth bar (55), on described guide rail three (51) and guide rail four (52), offer chute (511, 521), described slide bar (53) is at chute (511, 521) in, slide, described tooth bar (55) is arranged on guide rail three (51) and guide rail four (52) is upper, and described gear (54) is arranged on slide bar (53).

2. a kind of chip mounter connecting gear that transmits many sizes pcb board as claimed in claim 1, is characterized in that: on described guide rail three (51) and guide rail four (52), offer groove (512; 522), described tooth bar (55) is arranged on groove (512; 522) in.

3. a kind of chip mounter connecting gear that transmits many sizes pcb board as claimed in claim 1, is characterized in that: one end of described slide bar (53) is provided with rotary handle (56).

4. a kind of chip mounter connecting gear that transmits many sizes pcb board as claimed in claim 1, it is characterized in that: in described guide rail four (52), offer bar-shaped trough (523), annular stop piece (57) is installed on described slide bar (53), and described guide vane end stop (57) is fastened in bar-shaped trough (523).

5. a kind of chip mounter connecting gear that transmits many sizes pcb board as claimed in claim 4, is characterized in that: the cross section of described bar-shaped trough (523) is rectangle or square.

6. a kind of chip mounter connecting gear that transmits many sizes pcb board as claimed in claim 1, it is characterized in that: bearing (58) is installed on described slide bar (53), connecting rod (59) is installed on described bearing (58), and described connecting rod (59) is connected with slide block (40).