PCB protection glue prefabricating mechanism

Abstract

The utility model discloses a PCB (Printed Circuit Board) protection glue prefabricating mechanism in the technical field of protection glue preparation, and aims to solve the problem that in the prior art, residual glue is easy to exist when protection glue is printed on a substrate, and the attachment of subsequent products is influenced. The device comprises a workbench, a linear moving module is installed on the workbench, a base plate and a heating plate are installed at the moving end of the linear moving module, the heating plate is fixedly arranged below the base plate, and a printing mechanism is arranged on the workbench and located at the end of the linear moving module. A manipulator and a cleaning mechanism used for cleaning the surface of the substrate are arranged on the workbench and located on the moving path of the substrate; the device is used for reducing or eliminating residual adhesive on the surface of the substrate, prevents the protective adhesive from being adhered and damaged due to repeated printing and taking, and is beneficial to improving the stability of repasting the protective adhesive and improving the product yield.

Description

TECHNICAL FIELD

[0001] The utility model relates to PCB protection glue prefabrication mechanism belongs to protection glue preparation technical field. BACKGROUND

[0002] For the protection of functional pads of chemical gold PCB or electroplated gold PCB, currently, for products with low requirements, the strippable protection glue can be directly printed on the surface of the pad, but the glue stain is allowed to remain on the edge of the pad after stripping. However, the best way of use is to print the strippable protection glue on the smooth surface of the substrate, and then transfer and paste on the surface of the pad after stripping. When transferring on the substrate in this way, the tearing of the protection glue may cause partial residual glue to remain on the surface of the substrate. Long-term use may cause the residual glue to affect the secondary pasting effect of the protection glue, affect the contact effect of the pad surface, and ultimately cause the scrapping of the PCBA product. SUMMARY

[0003] The utility model discloses a PCB protection glue prefabrication mechanism, which is used to reduce or eliminate the residual glue on the surface of the substrate, avoid the adhesion damage of the protection glue caused by multiple printing and taking, improve the stability of the transfer and pasting of the protection glue, and improve the product yield.

[0004] To achieve the above-mentioned purpose, the utility model is adopted The technical scheme is as follows:

[0005] The PCB protection glue prefabrication mechanism provided by the utility model comprises a workbench, a linear movement module is installed on the workbench, a substrate and a heating plate are installed on the moving end of the linear movement module, the heating plate is fixedly arranged below the substrate, a printing mechanism is arranged on the end of the linear movement module of the workbench, and a mechanical hand and a cleaning mechanism for cleaning the surface of the substrate are arranged on the moving path of the substrate on the workbench.

[0006] Specifically, a clamping mechanism for clamping the printed glue on the substrate is arranged on the mechanical hand.

[0007] Specifically, a brush cleaning tool for cleaning the upper surface of the substrate is arranged on the mechanical hand.

[0008] Specifically, the cleaning mechanism comprises positioning plates fixedly arranged on the two sides of the linear movement module, a brush roller is rotatably arranged between the two positioning plates, a driving mechanism is arranged on the workbench, and the driving mechanism is used to drive the brush roller to rotate and clean the upper surface of the substrate.

[0009] Specifically, a liquid supply groove is further arranged between the two positioning plates, a liquid outlet is arranged below the liquid supply groove, the liquid outlet is in surface contact with the brush roller, and the liquid outlet is used to supply cleaning liquid to the brush roller.

[0010] Specific, two said positioning plate is provided with arc groove, the center of the arc groove and the axis of the brush roller concentric setting, the two sides of the liquid supply groove are fixedly installed with two movable rods, the two movable rods on each side are movably positioned in the arc groove, at least one movable rod on each side is threadedly connected with an adjusting nut.

[0011] Specific, two said positioning plate between still is provided with guide plate, the bottom surface of the guide plate is close to the bottom surface of the brush roller, the surface of the guide plate is covered with a cleaning cloth around the annular, the guide plate is equipped with a positioning mechanism for fixing the cleaning cloth.

[0012] Specific, said positioning mechanism includes a positioning strip, the guide plate is provided with a screw rod penetrating the positioning strip, the screw rod is threadedly connected with a nut for locking the positioning strip.

[0013] Specific, said positioning plate is provided with a vertical direction sliding slot, the guide plate is vertically slidably arranged in the sliding slot, the two sides of the guide plate are provided with adjusting pieces, the positioning plate is provided with a positioning piece, the adjusting pieces are provided with a screw rod for threadedly connecting the positioning piece.

[0014] Specific, two said positioning plate between still is provided with a scraper, the lower surface of the scraper is used for and the top surface of the substrate elastic contact.

[0015] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0016] The utility model discloses through setting up the substrate can be moved at the printing position and the cleaning position, can clean the surface of substrate after providing the finished protective glue and remove the residual glue, is favorable to preventing the sticky damage of subsequent protective glue use, is favorable to ensuring the integrity of protective glue, provides stable protection effect, thereby ensuring the production yield of product. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic drawing of protective glue prefabrication mechanism provided by the utility model embodiment;

[0018] Figure 2 It is the overall structure schematic drawing of protective glue prefabrication mechanism provided by the utility model Figure 1 Embodiment;

[0019] Figure 3 It is the overall structure schematic drawing of protective glue prefabrication mechanism provided by the utility model Figure 2 Embodiment;

[0020] Figure 4 It is the side sectional view schematic drawing of protective glue prefabrication mechanism provided by the utility model embodiment;

[0021] Figure 5 is the utility model Figure 4 The embodiment provides the structure amplification view of the C place of the protective glue prefabricating mechanism;

[0022] Figure 6 is the utility model Figure 4 The embodiment provides the structure amplification view of the D place of the protective glue prefabricating mechanism;

[0023] Reference signs: 1, workbench;2, linear movement module;3, printing mechanism;4, mechanical hand;5, heating plate;6, base plate;7, positioning plate;8, brush roller;9, scraper;10, guide plate;11, cleaning cloth;12, driving mechanism;13, positioning strip;14, screw rod;15, movable rod;16, adjusting nut;17, adjusting piece;18, positioning piece;19, adjusting rod;20, liquid supply groove. DETAILED DESCRIPTION

[0024] The utility model will be further described below in conjunction with the drawings. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model.

[0025] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. EMBODIMENT

[0027] The PCB protective glue prefabricating mechanism provided by the embodiment of the utility model, for reducing or eliminating the residue of the residual glue on the surface of the substrate, avoids the adhesion damage of the protective glue caused by multiple printing and taking, is beneficial to improving the stability of the protective glue transfer and paste, and improves the product yield, in order to realize the structure function of the mechanism, the mechanism is provided with a workbench 1, specifically, a linear movement module 2 is installed on the workbench 1, a printing mechanism 3 is arranged on the workbench 1 and located at the end of the linear movement module 2, a substrate 6 and a heating plate 5 are installed on the moving end of the linear movement module 2, and the heating plate 5 is fixedly arranged below the substrate 6, the heating plate 5 can adopt the form of an electric heating rod to conduct heat, realizes the heating of the whole substrate 6, improves the adhesion of the whole protective glue, and is beneficial to preventing the residue of the protective glue on the substrate 6 during clamping, in order to avoid the continuous adhesion of the residue on the substrate 6, affecting the printing and clamping of the subsequent process, a mechanical hand 4 and a cleaning mechanism for cleaning the surface of the substrate 6 can be arranged on the workbench 1 and located on the movement path of the substrate 6, the mechanical hand 4 can be configured to brush and wash the surface of the substrate 6, or the substrate 6 on the movement path can be brushed and washed separately through the cleaning mechanism, therefore, the mechanical hand 4 can be configured with a brushing tool for cleaning the upper surface of the substrate 6, such as a cleaning kit composed of a brush and a cloth. In order to improve the function of the mechanical hand 4, a clamping mechanism for clamping the printed glue on the substrate 6 can also be arranged on the mechanical hand 4, and the specific structure is not limited here, as long as the clamping mechanism can realize the shoveling and clamping of the printed glue.

[0028] The PCB protective glue prefabricating mechanism provided by the embodiment of the utility model specifically provides the composition of the cleaning mechanism, and specifically, the cleaning mechanism is provided with positioning plates 7 fixedly arranged on both sides of the linear movement module 2, and a brush roller 8 is rotatably arranged between the two positioning plates 7, as shown in Figure 1 The driving mechanism 12 is arranged on the workbench 1 and is used to drive the brush roller 8 to rotate so as to clean the upper surface of the substrate 6, at this time, the rotating direction of the brush roller 8 should meet the linear direction of the bottom and the direction of the substrate 6, so that the surface of the substrate 6 is scrubbed by using the large relative movement trend, and since the heating plate 5 can soften the glue layer on the substrate 6, the brushing capacity can be further improved, and the cleanliness of the surface of the substrate 6 can be ensured. In order to further improve the brushing capacity, a cleaning agent such as alcohol can be coated on the surface of the brush roller 8, and in order to facilitate coating, the mechanism further includes a liquid supply groove 20 arranged between the two positioning plates 7, specifically, a liquid outlet is arranged below the liquid supply groove 20 and is in surface contact with the brush roller 8, the liquid outlet is used to supply cleaning liquid to the brush roller 8, and the brush roller 8 can entrap the cleaning agent to press and scrape the surface of the substrate 6 during rotation, which is more beneficial to ensuring the cleanliness of the surface of the substrate 6 and improving the brushing effect.

[0029] The PCB protective glue prefabricating mechanism provided by the embodiment of the utility model, in order to ensure that the cleaning liquid can be evenly coated on the radial position of the brush roller 8 when supplying, as shown, two positioning plates 7 can be provided with arc grooves, the center of the arc grooves is concentrically arranged with the axis of the brush roller 8, and two movable rods 15 are fixedly installed on the two sides of the liquid supply groove 20, the two movable rods 15 on each side are movably and limitingly arranged in the arc grooves, and at least one movable rod 15 on each side is provided with a adjusting nut 16 threadedly connected thereon. Before coating the cleaning liquid, the cleaning agent can be deposited on one side of the groove bottom by rotating the liquid supply groove 20, and when coating is needed, the adjusting nut 16 is loosened to rotate the liquid supply groove 20, so that the liquid outlet can normally leak liquid. Figure 3

[0030] The PCB protective glue prefabricating mechanism provided by the embodiment of the utility model, in order to quickly wipe the cleaning stains on the substrate 6, further improve the brushing effect, here can be provided with a guide plate 10 between the two positioning plates 7, as shown, Figure 1 and Figure 5 The bottom surface of the guide plate 10 is flush with the bottom surface of the brush roller 8, and the surface of the guide plate 10 is covered with a cleaning cloth 11 surrounding the annular, after the substrate 6 moves to this position, the cleaning cloth 11 can be automatically used to scrub, after the cleaning cloth 11 works for a period of time, it is not convenient to clean the too much dirt attached to the surface, and direct replacement is relatively cumbersome, then the part not wiped can be directly rotated to replace the guide plate 10 to the bottom, so as to quickly realize the rework of the cleaning cloth 11, after waiting for the outer periphery of the cleaning cloth 11 to have no available part, the cleaning cloth 11 can be cleaned or replaced, which can greatly reduce the replacement time, in order to prevent the cleaning cloth 11 from slipping during work, a positioning mechanism for fixing the cleaning cloth 11 can be arranged on the guide plate 10. As a preferred embodiment, the positioning mechanism can include a positioning strip 13, as shown, Figure 2 The screw rod 14 can be installed on the guide plate 10 and penetrate the positioning strip 13, and the nut threadedly connected on the screw rod 14 is used to lock the positioning strip 13, and the pressing action of the positioning strip 13 prevents the cleaning cloth 11 from slipping and rotating.

[0031] The PCB protective glue prefabricating mechanism provided by the embodiment of the utility model, in order to facilitate the adjustment of the height of the cleaning cloth 11 to match the surface position of the substrate 6, a vertical sliding groove can be formed on the positioning plate 7, and the guide plate 10 is vertically and slidably arranged in the sliding groove, as shown, Figure 3 ​As shown, the adjusting pieces 17 are installed on both sides of the guide plate 10, the positioning pieces 18 are installed on the positioning plate 7, and the adjusting rods 19 for threadedly connecting the positioning pieces 18 are inserted on the adjusting pieces 17, by rotating the adjusting rods 19, the adjustment of the position of the guide plate 10 driving the cleaning cloth 11 is realized, thereby facilitating the replacement and accurate adjustment of the wiping effect.

[0032] The PCB protection glue prefabricating mechanism provided by the embodiment of the utility model, before being brushed again, in order to be able to first pretreat the residual protection glue on the substrate 6, here, a scraper 9 is further arranged between the two positioning plates 7, after the substrate 6 moves to the position of the scraper 9, the scraper 9 can first pretreat the residual glue layer, in order to avoid hard collision damage or insufficient scraping ability, the lower surface of the scraper 9 can be arranged to elastically contact the top surface of the substrate 6, the elastic member can be arranged on the mounting position of the scraper 9 or arranged below the substrate 6, and the specific embodiment is not limited any further.

[0033] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, without departing from the technical principle of the utility model, a number of improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection range of the utility model.

Claims

1. A PCB protective adhesive preforming mechanism, characterized in that, The utility model provides a kind of printing device, including workbench (1), the workbench (1) is installed with linear movement module (2), the moving end of linear movement module (2) is installed with base plate (6) and heating plate (5), the heating plate (5) is fixedly arranged below the base plate (6), the workbench (1) and located linear movement module (2) end is provided with printing mechanism (3), the workbench (1) and located base plate (6) movement path is equipped with manipulator (4) and is used to clean the cleaning mechanism of the surface of base plate (6).

2. The PCB protection adhesive preforming mechanism of claim 1, wherein, The manipulator (4) is provided with a clamping mechanism for clamping the printed glue on the base plate (6).

3. The PCB protection adhesive preforming mechanism of claim 1, wherein, The manipulator (4) is provided with a brush washing tool for cleaning the upper surface of the base plate (6).

4. The PCB protection adhesive preforming mechanism of claim 1, wherein, The cleaning mechanism includes positioning plates (7) fixedly arranged on both sides of the linear movement module (2), a brush roller (8) is rotatably arranged between the two positioning plates (7), a driving mechanism (12) is provided on the workbench (1), and the driving mechanism (12) is used to drive the brush roller (8) to rotate to clean the upper surface of the base plate (6).

5. The PCB protection adhesive preforming mechanism according to claim 4, wherein, A liquid supply groove (20) is further provided between the two positioning plates (7), a liquid outlet is provided below the liquid supply groove (20), the liquid outlet is in contact with the surface of the brush roller (8), and the liquid outlet is used to supply cleaning liquid to the brush roller (8).

6. The PCB protection adhesive preforming mechanism of claim 5, wherein, Arc grooves are formed in the two positioning plates (7), the centers of the arc grooves are concentric with the axis of the brush roller (8), two movable rods (15) are fixedly installed on both sides of the liquid supply groove (20), the two movable rods (15) on each side are movably and limitingly arranged in the arc grooves, and at least one movable rod (15) on each side is threadedly connected with an adjusting nut (16).

7. The PCB protection adhesive preforming mechanism of claim 5, wherein, A guide plate (10) is further provided between the two positioning plates (7), the bottom surface of the guide plate (10) is flush with the bottom surface of the brush roller (8), a cleaning cloth (11) is wrapped around the surface of the guide plate (10) in a ring shape, and a positioning mechanism is provided on the guide plate (10) to fix the cleaning cloth (11).

8. The PCB protection adhesive preforming mechanism of claim 7, wherein, The positioning mechanism includes a positioning strip (13), a screw rod (14) is installed on the guide plate (10) and penetrates the positioning strip (13), and a nut is threadedly connected with the screw rod (14) to lock the positioning strip (13).

9. The PCB protection adhesive preforming mechanism of claim 8, wherein, A vertical sliding groove is formed in the positioning plate (7), the guide plate (10) is vertically and slidably arranged in the sliding groove, adjusting pieces (17) are installed on both sides of the guide plate (10), a positioning piece (18) is installed on the positioning plate (7), and an adjusting rod (19) is inserted into the adjusting piece (17) to threadedly connect the positioning piece (18).

10. The PCB protection adhesive preforming mechanism of claim 4, wherein, A scraper (9) is further provided between the two positioning plates (7), and the lower surface of the scraper (9) is used to elastically contact the top surface of the base plate (6).

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