Vacuum suction plate positioning device for LED (light-emitting diode) auxiliary printing and mounting

Abstract

The utility model relates to the technical field of LED display screen processing, and particularly discloses an LED auxiliary printing and mounting vacuum suction plate positioning device, which comprises a PCB support cavity seat, a PCB support cavity, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate, a vacuum suction plate and a vacuum suction plate, the plurality of PCB supporting thimbles are mounted at the positions, close to the front side and the rear side, in the inner cavity of the PCB supporting cavity; the plurality of PCB vacuum adsorption cavities are arranged at the position of the central line in the inner cavity of the PCB supporting cavity; the positions, close to the middle, of the outer walls of the two sides of the PCB supporting cavity base are each provided with two PCB vacuum cavity ventilation pipeline outer connectors. The device provided by the utility model avoids the problem of product quality caused by the influence on solder paste printing due to deviation and lateral falling of the ejector pin, replaces a reflow soldering jig, reduces the repeated investment cost of accessories and tool jigs, replaces a high-temperature adhesive tape, realizes the replacement of adhesion by adsorption, and reduces the material cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED display screen processing, and in particular relates to a vacuum suction plate positioning device for LED auxiliary printing and mounting. Background Art

[0002] The LED display module requires bottom support during printing and assistance during PCB printing. The existing technical solution mainly provides support with multiple support pins at the bottom, and then relies on a reflow fixture to assist the PCB surface in positioning. In order to prevent the position of each PCB board from being too offset, it is currently only bonded with high-temperature tape or fixed with positioning buckles.

[0003] The main disadvantage of the existing technical solution is that the supporting ejector pins will be offset during the operation of the machine, or even fall sideways, affecting printing. Secondly, the reflow soldering fixture itself will deform after a period of use, affecting the printing accuracy and causing inconsistent solder paste thickness. In addition, after the PCB board is bonded with high-temperature glue, the cost increases and the appearance changes color. Therefore, it is necessary to develop a device that can support the whole body and can absorb and replace the bonding fixture, and also replace the reflow soldering fixture.

[0004] Therefore, those skilled in the art have proposed a vacuum suction plate positioning device for LED auxiliary printing and mounting to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum suction plate positioning device for LED auxiliary printing and mounting, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A vacuum plate positioning device for LED auxiliary printing and mounting, comprising:

[0008] A PCB board supporting cavity seat, wherein a PCB board supporting cavity inner cavity is formed on a top outer wall of the PCB board supporting cavity seat;

[0009] PCB board supporting ejector pins, a plurality of said PCB board supporting ejector pins are installed in the inner cavity of the PCB board supporting cavity near the front and rear sides;

[0010] A PCB board vacuum adsorption chamber, wherein a plurality of the PCB board vacuum adsorption chambers are installed at the center line of the inner cavity of the PCB board support chamber;

[0011] The PCB board vacuum cavity ventilation duct has two PCB board vacuum cavity ventilation duct external interfaces on the outer walls of both sides of the PCB board support cavity seat near the middle, and the two PCB board vacuum cavity ventilation ducts are respectively plugged into the corresponding PCB board vacuum cavity ventilation duct external interfaces, and the two PCB board vacuum cavity ventilation ducts are both horizontally inserted into a row of PCB board vacuum adsorption cavities.

[0012] Preferably, the PCB board supporting ejector pins are distributed on both sides of the ventilation duct of the PCB board vacuum chamber, and both sides are provided with two rows of multiple PCB board supporting ejector pins arranged horizontally.

[0013] Preferably, the outer walls on both sides of the PCB board support cavity seat are provided with PCB board clamping and lifting cylinder columns near both ends.

[0014] Preferably, a PCB board clamping and fixing block is installed on the surface of the PCB board clamping and lifting cylinder column, and one end of the PCB board clamping and fixing block is attached to an outer wall of one side of the PCB board support cavity seat.

[0015] Preferably, PCB board clamping columns are provided on both side outer walls of the PCB board clamping and fixing block, and one end of the PCB board clamping column is attached to one side outer wall of the PCB board supporting cavity seat.

[0016] Preferably, a PCB board vacuum cavity sponge adsorption layer is provided on the surface of the PCB board vacuum adsorption cavity.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The utility model is provided with a PCB board vacuum adsorption chamber, a PCB board clamping and fixing block, and a PCB board clamping column. The surface of the PCB board vacuum adsorption chamber is provided with a PCB board vacuum chamber sponge adsorption layer to avoid damaging the PCB board and ensure that the PCB board can be flatly attached to the fixture, thereby ensuring the printing and mounting problems of the product. The PCB board clamping and fixing block and the PCB board clamping column will position and clamp the PCB board after receiving the sensing information that the PCB board is in place, and will also clamp the upper and lower positions when necessary, thereby avoiding the displacement and sideways tilting of the ejector pin affecting the solder paste printing, thereby causing product quality problems. The utility model can replace the reflow soldering fixture, reduce the multiple investment costs of accessories and tooling fixtures, and can replace the high-temperature tape to achieve adsorption instead of adhesion, thereby reducing material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the bottom structure of the device of the utility model;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure from another angle;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0023] In the figure: 1. PCB board support ejector pin; 2. PCB board vacuum adsorption chamber; 3. PCB board clamping and clamping lifting cylinder column; 4. PCB board support chamber seat; 5. PCB board support chamber inner cavity; 6. PCB board vacuum chamber ventilation duct; 7. PCB board clamping column; 8. PCB board vacuum chamber ventilation duct external interface; 9. PCB board vacuum chamber sponge adsorption layer; 10. PCB board clamping fixing block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 As shown, a vacuum suction plate positioning device for LED auxiliary printing and mounting includes:

[0026] A PCB board supporting cavity seat 4, wherein a PCB board supporting cavity inner cavity 5 is formed on the top outer wall of the PCB board supporting cavity seat 4;

[0027] A PCB board supporting ejector pin 1, wherein a plurality of PCB board supporting ejector pins 1 are installed in the inner cavity 5 of the PCB board supporting cavity near the front and rear sides;

[0028] A PCB board vacuum adsorption chamber 2, wherein a plurality of PCB board vacuum adsorption chambers 2 are installed at the center line of the inner cavity 5 of the PCB board support chamber;

[0029] The PCB board vacuum cavity ventilation duct 6, two PCB board vacuum cavity ventilation duct external interfaces 8 are opened near the middle of the outer walls on both sides of the PCB board support cavity seat 4, and the two PCB board vacuum cavity ventilation ducts 6 are respectively plugged into the corresponding PCB board vacuum cavity ventilation duct external interfaces 8, and the two PCB board vacuum cavity ventilation ducts 6 are both horizontally inserted into a row of PCB board vacuum adsorption cavities 2.

[0030] As can be seen from the above, the PCB board is adsorbed and fixed by the PCB board vacuum adsorption chamber 2, and ventilation is facilitated by the PCB board vacuum chamber ventilation pipe 6. After the PCB board is fixed, printing work can be started.

[0031] Specifically, the PCB board supporting ejector pins 1 are distributed on both sides of the PCB board vacuum chamber ventilation duct 6, and both sides are provided with two rows of multiple PCB board supporting ejector pins 1 arranged horizontally.

[0032] As can be seen from the above, the PCB board supporting ejector pins 1 are arranged in four rows, and a PCB board vacuum adsorption chamber 2 is arranged in the middle to assist the PCB board supporting ejector pins 1 in supporting, thereby preventing the PCB board supporting ejector pins 1 from deflecting and tilting to affect solder paste printing, thereby reducing the impact on product quality.

[0033] Specifically, the outer walls on both sides of the PCB board support cavity seat 4 are provided with PCB board clamping and lifting cylinder columns 3 near both ends.

[0034] As can be seen from the above, the PCB board clamping and lifting cylinder column 3 is assembled to the lifting rod inside the printing machine, and it is convenient to clamp the PCB board after lifting.

[0035] Specifically, a PCB board clamping and fixing block 10 is installed on the surface of the PCB board clamping and lifting cylinder column 3, and one end of the PCB board clamping and fixing block 10 is attached to the outer wall of one side of the PCB board support cavity seat 4.

[0036] As can be seen from the above, the PCB board clamping and fixing block 10 is lifted by the PCB board clamping and lifting cylinder column 3, and the PCB board clamping and fixing block 10 is used to clamp the PCB board.

[0037] Specifically, PCB board clamping posts 7 are provided on both side outer walls of the PCB board clamping and fixing block 10 , and one end of the PCB board clamping posts 7 is attached to one side outer wall of the PCB board supporting cavity seat 4 .

[0038] As can be seen from the above, the PCB board clamping and fixing block 10 is assisted by the PCB board clamping column 7 to clamp the PCB board.

[0039] Specifically, the surface of the PCB board vacuum adsorption cavity 2 is provided with a PCB board vacuum cavity sponge adsorption layer 9 .

[0040] As can be seen from the above, the adsorption surface layer of the PCB board vacuum adsorption cavity 2 is the PCB board vacuum cavity sponge adsorption layer 9, which is a sponge to avoid damaging the PCB board and ensure that the PCB board can be flatly attached to the fixture.

[0041] Working principle: The bare PCB board is sent to the designated jig track by the conveyor belt. The PCB board clamping and fixing block 10 will position and clamp the PCB board after receiving the sensing information that the PCB board is in place. If necessary, it will also clamp the upper and lower positions. After the clamping action is completed, it will be adsorbed by the vacuum adsorption cavity 2 of the PCB board vacuum adsorption cavity. The adsorption surface is the sponge adsorption layer 9 of the PCB board vacuum cavity, which avoids damage to the PCB board and ensures that the PCB board can be flatly attached to the jig, ensuring the printing and mounting of the product. The PCB board positioning and clamping lifting cylinder column 3 is assembled to the lifting rod inside the printing machine, which is used to lift the PCB board clamping and fixing block 10. The PCB board support ejector 1 is fixed in the inner cavity 5 of the PCB board support cavity at one time according to the design of the PCB board. The device has higher precision than the reflow soldering jig and can well assist the PCB board during use. Moreover, this device is fixed on the machine position and does not move with the PCB board. From printing to mounting, all are completed by the cooperation of this device.

[0042] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0043] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradiction.

[0047] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vacuum plate positioning device for LED auxiliary printing and mounting, characterized in that: include: A PCB board supporting cavity seat (4), wherein a PCB board supporting cavity inner cavity (5) is formed on the top outer wall of the PCB board supporting cavity seat (4); PCB board supporting ejector pins (1), a plurality of said PCB board supporting ejector pins (1) are installed in the inner cavity (5) of the PCB board supporting cavity near the front and rear sides; A PCB board vacuum adsorption cavity (2), wherein a plurality of the PCB board vacuum adsorption cavities (2) are installed at the position of the inner center line of the inner cavity (5) of the PCB board support cavity; A PCB board vacuum cavity ventilation duct (6), two PCB board vacuum cavity ventilation duct external interfaces (8) are provided at positions near the middle of the outer walls of both sides of the PCB board support cavity seat (4), the two PCB board vacuum cavity ventilation ducts (6) are respectively plugged into the inside of the corresponding PCB board vacuum cavity ventilation duct external interfaces (8), and the two PCB board vacuum cavity ventilation ducts (6) are both transversely inserted into a row of PCB board vacuum adsorption cavities (2).

2. According to claim 1, a vacuum plate positioning device for LED auxiliary printing and mounting is characterized in that: The PCB board supporting ejector pins (1) are distributed on both sides of the PCB board vacuum chamber ventilation duct (6), and both sides are provided with two rows of multiple PCB board supporting ejector pins (1) arranged horizontally.

3. The LED auxiliary printing and mounting vacuum plate positioning device according to claim 1, characterized in that: PCB board clamping and clamping lifting cylinder columns (3) are provided at positions close to both ends of the outer walls of both sides of the PCB board supporting cavity seat (4).

4. The LED auxiliary printing and mounting vacuum plate positioning device according to claim 3, characterized in that: A PCB board clamping and fixing block (10) is installed on the surface of the PCB board clamping and lifting cylinder column (3), and one end of the PCB board clamping and fixing block (10) is attached to an outer wall of one side of the PCB board support cavity seat (4).

5. The LED auxiliary printing and mounting vacuum plate positioning device according to claim 4, characterized in that: PCB board clamping columns (7) are provided on both side outer walls of the PCB board clamping and fixing block (10), and one end of the PCB board clamping column (7) is fitted on one side outer wall of the PCB board supporting cavity seat (4).

6. The LED auxiliary printing and mounting vacuum plate positioning device according to claim 1, characterized in that: The surface of the PCB board vacuum adsorption cavity (2) is provided with a PCB board vacuum cavity sponge adsorption layer (9).

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