CN112996266B - Basket is hung to integrative locking of PCB chemical copper plating production - Google Patents

Abstract

The invention provides an integrated locking hanging basket for PCB electroless copper plating production, and belongs to the technical field of multilayer printed circuit manufacturing. The invention adopts a locking device as a fixing device, realizes the switching of the locking/releasing state of the whole device by using the movement of the transmission rack in the locking device through taking the locking device as a part of the hanging basket, has simple operation mode and wide compatibility on the premise of providing good support, and can realize the improvement of the production efficiency of the chemical copper plating. Compared with the existing production equipment, the design can effectively improve the production efficiency and reduce the operation flow.

Description

An integrated locking hanging basket produced by PCB chemical copper plating

technical field

The invention belongs to the technical field of multi-layer printed circuit manufacturing, and in particular relates to an integrated locking hanging basket structure for PCB chemical copper plating production.

Background technique

The 5th generation mobile networks (5G) is an emerging communication technology facing the future. Compared with the currently widely used 4th generation mobile networks (4G), the peak rate has increased by dozens of tens of thousands. times, and the number of device accesses has also increased by an order of magnitude. As 5G has higher and higher requirements for the carrying capacity of simultaneous access devices and the access speed of a single device, the size of the printed circuit, which is the core component of 5G base stations, is also increasing. Under the same equipment space, due to the increase in the size of the printed circuit board itself, the number of equipment that can be processed at a time will be reduced to a certain extent. At the same time, because the penetration of 5G signal transmission is significantly lower than that of the previous generation, in order to achieve the same coverage effect, more 5G base stations need to be deployed. Driven by the dual demands of 5G communication on the number and size of PCBs, the printed circuit industry must increase production capacity, and improving production efficiency is the fastest, most economical and most effective way to increase production capacity.

Electroless copper plating is the core and longest process in PCB production. Electroless copper plating is an important step in actual production. Using chemical copper plating, a conductive copper seed layer can be attached to the holes of the printed circuit board, providing basic conditions for subsequent electroplating processing. At present, the more common copper plating loading method in the industry is to use smaller-sized sub-baskets to load printed circuit boards of different sizes, and integrate several sub-baskets into a whole mounting unit through a larger-sized mother hanging basket. Due to the different sizes of the printed circuit boards to be processed, and the mechanical measures to remove air bubbles in the holes such as rocking and vibration during the processing, a fixing device is also required between the child hanging basket and the mother hanging basket. The device needs to be able to Prevent the child hanging basket from falling off the mother hanging basket during processing. From the analysis of actual production test data, the fixture needs to provide at least two directions of support for a single small hanging basket at least, because if there is only one direction of support, there will still be a risk of falling. For example, the patent CN201921306777.5 "A PCB Immersion Copper Hanging Basket" extends the steel bar in the middle of the outer side of the large-sized hanging basket frame upwards, which plays the role of fixing the bottom of the hanging basket, but the design ignores the fixing on both sides. In production, it is easy to cause the problem that the sub-basket is separated from the mother hanging basket by the unilateral support. In fact, additional fixing measures are still needed to reinforce the side of the sub-basket. However, if additional fixing measures are used manually, it will affect the production efficiency to a certain extent.

The patent CN201710367375.5 "An Immersion Copper Hanging Basket and a Conveying Device Containing the Immersion Copper Hanging Basket" introduces the concept of a clamping layer in the hanging basket, and the printed circuit board can be firmly fixed on the hanging basket through the upper and lower clamping layers However, when this design faces multiple batches of printed circuit boards of different sizes, it is inevitable that some clamping layers cannot fix the small-sized printed circuit boards. At the same time, the design can only be clamped and fixed after all the printed circuit boards to be processed are loaded, and there is a certain risk of falling when loading large-sized printed circuit boards. The patent CN201920937936.5 "a gravity PCB sinking copper frame" provides a method for locking by relying on the gravity of the printed circuit board itself. The function of automatically unlocking when loading, and automatically locking after loading the printed circuit board that needs to be processed. However, the entire structure of this method is a locking design, which is relatively complicated. At the same time, the normal use of the device requires the weight of the loaded printed circuit board to reach a certain level, which lacks flexibility in the face of the processing of a large number of small batches of products. Patent CN201620501371.2 "A suspension tool with adjustable width for copper sinking of different PCBs", Patent CN201820595059.3 "A titanium basket for sinking copper assembly line", Patent CN201620413293.0 "A PTH plug-in device", patent CN200920204672.9 "Improved Model Insertion Plate Holder for Immersion Copper Automatic Line" uses combs at the bottom and sides of the hanging basket to fix the printed circuit board. This structure fixes the printed circuit board in the tooth slot, which can effectively prevent the printed circuit from falling off due to shaking during processing. However, this structure requires frequent upper and lower fixing screws in the process of loading and unloading the printed circuit board before and after processing, and due to the design of no sub-basket, it takes a lot of time, and the production efficiency is relatively low, and it can only be operated manually on site , and cannot be automated or unmanned upgrades.

Therefore, how to achieve good fixing while using the mother-child hanging basket in the production of electroless copper plating, and at the same time have relatively fast upper and lower plate production capacity and simple, automation-compatible operation mode has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

In view of the problems existing in the background art, the purpose of the present invention is to provide an integrated locking hanging basket for the production of PCB electroless copper plating. The present invention adopts a locking device as a fixing device. By using the locking device as a part of the hanging basket, the self-locking structure and transmission mechanism of the locking device are utilized. On the premise of providing good support, the invention has a simple operation mode at the same time. And a wide range of compatibility, can achieve the improvement of the production efficiency of electroless copper plating. Compared with the existing production equipment, the design can effectively improve the production efficiency, reduce the operation process, and can construct an automatic lock/release control system.

For achieving the above object, technical scheme of the present invention is as follows:

An integrated locking hanging basket for PCB chemical copper plating production, comprising a fixing device, the fixing device includes a locking structure and a transmission structure;

The locking structure includes a fixed seat, a sliding part, a transmission rack, a sliding steel bar and a spring, the sliding part includes a track and a limit mechanism, the fixed seat is a cuboid with an inner groove, the sliding steel bar, The sliding part and the spring are sequentially arranged in the groove of the fixed seat from left to right, one end of the sliding steel bar is fixedly arranged on one side of the fixed seat, and the other end is placed in the track; one end of the spring is fixedly connected with the sliding part, and the other end is fixed with the The other side of the fixed seat is fixedly connected; the transmission rack and the sliding part are arranged side by side on the fixed seat, and the transmission rack and the sliding part always keep moving in the same direction;

The transmission structure includes three transmission rods arranged in a U shape, the transmission rods are connected by a bevel gear group, and each transmission rod is provided with several gears;

The locking structure and the transmission structure are meshed and connected through the transmission rack and gear.

Further, when the drive rack pushes inwards, it drives the sliding member to move in the same direction, so that the sliding steel bar moves along the track on the sliding member to the entrance of the limit mechanism. At this time, the drive rack stops pushing, and the spring is deforming. Under the action of the force, the limit mechanism moves in the reverse direction, and then the sliding steel rod slides into the groove of the limit mechanism to realize the locking of the locking structure; continue to push the transmission rack, the sliding steel rod slides out from the groove of the limit mechanism, At this time, the application of external force is stopped, and the sliding part returns to the initial position under the action of the spring deformation force to realize the release of the locking structure.

Further, the limit mechanism in the sliding member has an inward groove, and two ends of the limit mechanism are respectively connected with the track, wherein there is a height difference between the limit mechanism inlet, the track and the limit mechanism outlet, and at the same time, the limit The height difference is set at the entrance edge of the groove of the positioning mechanism to ensure the one-way movement of the sliding steel bar in the track and realize the locking and release of the locking structure.

Further, the length of the transmission rod is set according to actual needs, and the gear distribution is set according to the size of the PCB to be fixed.

An integrated locking hanging basket for PCB chemical copper plating production, comprising a locking structure and a transmission structure, characterized in that the transmission structure of the fixing device is fixedly arranged at the edge of the inner opening of the mother hanging The basket is placed inside the mother hanging basket and is fixedly connected with the gears on the adjacent two sides of the transmission structure.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present invention are:

1. The fixing device designed in the present invention combines the locking device and the transmission device, and realizes the switching of the locking/release state of the entire device through the movement of the transmission rack in the locking device. The locking and non-integrated locking equipment simplifies the operation steps, and can lock and fix efficiently and quickly, improving the production efficiency.

2. The hanging basket device designed by the present invention can continue to use the existing chemical copper plating process production line in actual production, and only needs to modify the structure of the existing large-sized hanging basket without updating any chemical plating process parameters. , the production efficiency can be improved, and it has the advantages of less investment, quick effect and low risk.

Description of drawings

FIG. 1 is a top view of the locking structure in the fixing device of the present invention.

FIG. 2 is an overall schematic diagram of the locking structure in the fixing device of the present invention.

Fig. 3 is an enlarged plan view of the sliding member of the present invention.

FIG. 4 is an enlarged schematic view of the connection between the limiting mechanism and the track according to the present invention.

Figure 5 is a side sectional view of the track of the present invention.

FIG. 6 is a schematic view of the locking device of the present invention in a locked state.

FIG. 7 is a schematic diagram of the transmission structure of the present invention.

Among them, 1 is a locking structure, 2 is a transmission structure, 3 is a fixed seat, 101 is a track, 102 is a limit mechanism, 103 is a transmission rack, 104 is a sliding steel bar, 105 is a spring, 201 is a gear, and 202 is Bevel gear set, 203 is the transmission rod.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings.

An integrated locking hanging basket for PCB chemical copper plating production, comprising a fixing device, the fixing device includes a locking structure and a transmission structure;

The top view of the locking structure is shown in FIG. 1 , and the schematic diagram of the overall structure is shown in FIG. 2 . The locking structure 1 includes a fixed seat 3 , a sliding part, a transmission rack 103 , a sliding steel bar 104 and a spring 105 . The sliding part includes a track 101 and a limit mechanism 102, the fixed seat 3 is a cuboid with an inner groove, and the sliding steel bar 104, the sliding part and the spring 105 are sequentially arranged in the groove of the fixed seat 3 from left to right, The transmission rack 103 and the sliding part are arranged side by side on the fixed seat 3; one end of the sliding steel bar 104 is fixedly arranged on one side of the fixed seat 3, and the other end is placed in the track 101; the two ends of the spring 105 are respectively connected with a shackle , one shackle is fixedly connected with the sliding part, and the other shackle is fixedly connected with the other side of the fixed seat 3;

The schematic diagram of the transmission structure 2 is shown in FIG. 7 , the transmission structure includes three transmission rods 203 arranged in a U shape, the transmission rods are connected by a bevel gear group 202, and each transmission rod is provided with several gears 201;

The locking structure 1 and the transmission structure 2 are connected by engagement with the transmission rack 103 and the gear 201 .

Fig. 3 is an enlarged plan view of the sliding member of the present invention. Wherein, the sliding part includes a track 101 and a limit mechanism 102, the track has two sections, the sliding steel bar 104 slides in section and the slide out section; the limit mechanism has an inward groove, the two ends of which are respectively connected with the slide-in section and the slide-out section of the track. Slide out the segment connection. Among them, the enlarged schematic diagram of the connection between the track and the limit structure is shown in Figure 4. There is a height difference between the entrance of the limit mechanism and the slide-in section of the track, as well as the connection between the entrance of the limit mechanism and the slide-out section of the track. The height difference is set at the edge of the groove entrance of the limiting mechanism, and these three measures are all to ensure the one-way movement of the sliding steel bar in the track, so as to realize the locking and release of the locking structure.

Figure 5 is a side sectional view of the track of the present invention. It can be seen from the figure that the height of the exit of the slide-out section of the track is greater than the height of the entrance of the slide-in section. The track slide-out segment slides out.

The specific working process of the locking structure is as follows:

When the driving rack 103 is pushed inward, the sliding member is driven to move inward, so that the sliding steel bar 104 moves along the track 101 on the sliding member to the entrance of the limit mechanism 102. At this time, the driving rack is stopped, and the limit mechanism 102 moves in the opposite direction under the action of the deformation force of the spring 105, so that the sliding steel bar 104 slides into the groove of the limit mechanism to realize the locking of the locking structure, as shown in Figure 6; continue to push the transmission rack, slide the steel bar 104 It slides out from the groove of the limiting mechanism 102. At this time, the application of external force is stopped, and the sliding member returns to the initial position under the action of the deformation force of the spring 105 to realize the release of the locking structure.

The above descriptions are only specific embodiments of the present invention, and any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes; all the disclosed features, or All steps in a method or process, except mutually exclusive features and/or steps, may be combined in any way.

Claims (5)

1. An integrated locking hanging basket for PCB electroless copper plating production is characterized by comprising a fixing device, wherein the fixing device comprises a locking structure and a transmission structure;

the locking structure comprises a fixed seat, a sliding part, a transmission rack, a sliding steel bar and a spring, wherein the sliding part comprises a track and a limiting mechanism, the fixed seat is a cuboid with an inner groove, the sliding steel bar, the sliding part and the spring are sequentially arranged in the groove of the fixed seat from left to right, one end of the sliding steel bar is fixedly arranged on one side of the fixed seat, and the other end of the sliding steel bar is placed in the track; one end of the spring is fixedly connected with the sliding part, and the other end of the spring is fixedly connected with the other side of the fixed seat; the transmission rack and the sliding part are arranged on the fixed seat side by side, and the transmission rack and the sliding part always keep moving in the same direction;

the transmission structure comprises three transmission rods which are arranged in a U shape, the transmission rods are connected through a bevel gear set, and each transmission rod is provided with a plurality of gears;

the locking structure and the transmission structure are connected in an engaged manner through a transmission rack and a gear.

2. The integrally locked hanging basket according to claim 1, wherein the driving rack, when pushed inward, drives the sliding member to move in the same direction, so that the sliding steel bar moves along the track on the sliding member to the entrance of the limiting mechanism, at this time, the driving rack stops pushing, the spring makes the limiting mechanism move in the opposite direction under the deformation force, and the sliding steel bar slides into the groove of the limiting mechanism, thereby locking the locking structure; and continuously pushing the transmission rack, sliding the sliding steel bar out of the groove of the limiting mechanism, stopping applying external force, and restoring the sliding part to the initial position under the action of the spring deformation force to release the locking structure.

3. The integrally locked hanging basket according to claim 1, wherein the stopper mechanism of the sliding member has an inward groove, both ends of which are connected to the rails, respectively, wherein a height difference exists between the inlet of the stopper mechanism, the rails and the outlet of the stopper mechanism, and the edge of the inlet of the groove of the stopper mechanism is provided with a height difference to ensure the unidirectional movement of the sliding steel bar in the rails.

4. The integrated locking hanging basket according to claim 1, wherein the length of the transmission rod is set according to actual needs, and the gear distribution is set according to the size of a PCB to be fixed.

5. The integrated locking hanging basket according to any one of claims 1 to 4, wherein the transmission structure of the fixing device is fixedly arranged at the edge position of the opening at the inner side of the female hanging basket, and the secondary hanging basket is arranged at the inner side of the female hanging basket and is fixedly connected with the gears at two adjacent sides of the transmission structure.

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