CN218554582U - Glue coating device for thin film - Google Patents

Abstract

The application relates to the field of production of conductive foam, in particular to a glue coating device for a film, which comprises a glue filling piece, a glue pressing base, a glue pressing piece and a glue scraping base, wherein the glue pressing base is provided with a glue accommodating cavity, and the glue pressing piece can vertically slide and extend into the glue accommodating cavity; the glue containing cavity is provided with a through hole and a glue injection hole, and the glue pressing base is connected with the glue injection piece through the through hole; the frictioning base is connected below the rubber pressing base, and a guide chute for placing a film is arranged on the frictioning base; the glue pressing base is provided with a glue spreading groove at the bottom, the upper end of the glue spreading groove is communicated with the glue injecting hole, and the opening of the glue spreading groove faces to the lower guide chute. Under the double-layer pressure of the glue pressing piece and the spring, glue can be continuously and stably discharged, and therefore the uniformity of glue coating of the film is improved.

Description

Glue coating device for thin film

Technical Field

The application relates to the field of production of conductive foam, in particular to a glue coating device for a film.

Background

At present, in the research and development and production of conductive foam (SMT foam for short) products which can be pasted by SMT technology, a silica gel core strip and a conductive PI film are required to be coated and heated for molding, and the conductive PI film is in a film shape. In the actual production process, a thin glue layer is usually knife-coated on the surface of the film through a specific jig, and then the subsequent coating and curing operations are performed.

However, in the conventional glue scraping operation process, the glue is treated in a simple way that a glue tank naturally flows to the position below a scraper, and is easily influenced by continuous production, the glue with higher viscosity is easily accumulated in the glue tank, and the glue cannot timely flow to a scraping knife edge when the glue amount is reduced, so that the problem of inconsistent thickness of the scraping glue and even glue shortage is caused.

SUMMERY OF THE UTILITY MODEL

In order to improve the uniformity of glue application, the application provides a glue application device for thin films.

The application provides a glue coating device for film adopts following technical scheme:

a glue coating device for a film comprises a glue filling piece, a glue pressing base, a glue pressing piece and a glue scraping base, wherein the glue pressing base is provided with a glue containing cavity, and the glue pressing piece can vertically slide and extend into the glue containing cavity; the glue containing cavity is provided with a through hole and a glue injection hole, and the glue pressing base is connected with the glue injection piece through the through hole; the frictioning base is connected below the rubber pressing base, and a guide chute for placing a film is arranged on the frictioning base; the bottom of the glue pressing base is provided with a glue coating groove, the upper end of the glue coating groove is communicated with the glue injection hole, and the opening of the glue coating groove faces to the lower guide chute.

By adopting the technical scheme, glue is firstly injected into the glue filling piece, the glue filling piece fills the glue into the glue containing cavity through the through hole on the glue containing cavity, the glue is extruded by the self gravity of the glue pressing piece along the vertical direction, the glue uniformly flows into the glue injection hole under the stable pressure of the glue pressing piece and then flows into the glue coating groove from the glue injection hole, and the glue in the glue coating groove is uniformly coated on the film of the guide groove; and the glue is stored in the Rong Jiaoqiang chamber, the automatic filling of the glue can be realized through the glue pressing piece, the condition that the glue is not uniformly coated due to glue shortage is reduced, the uniformity of the glue coated on the film is improved, and the consistency of the product quality is improved.

Optionally, the rubber pressing piece is connected with a spring, the spring is arranged in the vertical direction, one end of the spring is connected to the upper end of the rubber pressing piece, and the other end of the spring is fixed to the rubber pressing base; when the spring is in an uncompressed state, the glue pressing piece and the bottom of the Rong Jiaoqiang chamber are provided with a space for injecting glue.

By adopting the technical scheme, when glue is not injected into the glue containing cavity, the spring is in an uncompressed state, when the glue containing cavity starts to inject the glue, the glue pressing piece slides upwards relative to the glue containing cavity under the support of the glue and extrudes the spring, and the spring contracts to store elasticity; the glue after being injected uniformly and rapidly flows into the glue injection holes to be coated on the film under the continuous action of the self gravity of the glue pressing piece and the elastic force of the spring, so that the uniformity of coating the glue on the film is improved; and the flow rate of the glue in the glue containing cavity is increased, and the time that the glue stays in the glue containing cavity is shortened, so that the accumulation of the glue in the glue containing cavity is reduced, and the cleaning convenience of the device is improved.

Optionally, the glue filling member is a needle cylinder, and a glue outlet head of the needle cylinder is inserted into a through hole of the glue containing cavity.

Through adopting above-mentioned technical scheme, according to the glue volume of needs, pour into the cylinder with glue in advance, then utilize the mode of some adhesive equipments or hand push piston, carry out the ration filling for glue can be by effectual make full use of, also can reduce the condition of lacking glue midway, guarantees that film coating glue's stability goes on, thereby improves the production efficiency of device.

Optionally, a sealing ring is connected to the outer peripheral side of the glue pressing piece, and the sealing ring is tightly abutted to the inner wall of the glue accommodating chamber.

Through adopting above-mentioned technical scheme, set up the sealing washer in the pressure glue spare outside and can strengthen holding the leakproofness of gluing the cavity, reduce the entering of air and the excessive of glue to improve glue coating and the homogeneity of film and the maneuverability of device.

Optionally, the glue pressing base comprises a glue accommodating block and a connecting block, the glue accommodating block is provided with a glue accommodating cavity, the connecting block is connected with the glue scraping base, the glue injecting hole is formed in the connecting block and a connecting position of the glue accommodating block in a penetrating mode, the glue coating groove is formed in the lower surface of the connecting block, and the open end of the glue coating groove and the bottom surface of the guide groove form a glue scraping gap.

By adopting the technical scheme, the glue flows into the glue coating groove on the connecting block through the glue accommodating cavity on the glue block of the glue injection Kong Congrong; the film is placed in the baffle box, when the film removed the rubber coating groove department, the glue in the rubber coating groove can automatic coating in the film upper surface to under the effect in frictioning clearance, film surface coating's unnecessary glue can be scraped by the rubber coating groove and stays to the rubber coating groove in, reduces the condition of excessive glue, thereby improves film surface coating glue's homogeneity.

Optionally, the two glue injection holes are symmetrically distributed at the bottom end of the glue accommodating chamber, the arrangement direction of the two glue injection holes is perpendicular to the moving direction of the film, and two ends of the glue coating groove are communicated with the two glue injection holes.

Through adopting above-mentioned technical scheme, injecting glue pore pair symmetry sets up in holding gluey cavity bottom, and glue flows into the rubber coating groove both ends from the injecting glue pore pair for glue flows in from the rubber coating groove both ends to the centre, fills in inside the rubber coating groove, and coats in the film upper surface, realizes that glue is from both ends to the coating in the centre at the film upper surface, thereby improves the speed of glue coating.

Optionally, a bearing groove for placing the needle cylinder is formed in one side, away from the rubber containing block, of the connecting block, a clamping block is connected to the connecting block, the clamping block is provided with a buckling groove matched with the bearing groove, and the clamping block and the connecting block are matched to form a placement area for placing the needle cylinder.

Through adopting above-mentioned technical scheme, set up on the connecting block and hold the groove and be used for the bearing to place the cylinder, the lock groove of rethread clamp splice is further fixed the cylinder to improve the stability of cylinder on the moulding seat.

Optionally, a core bar perforation is arranged in the connecting block, the core bar perforation is located between the two glue injection holes and right above the glue scraping gap, and the core bar perforation is arranged along the moving direction of the film.

Through adopting above-mentioned technical scheme, set up the core strip in the connecting block and perforate, can practice thrift the space, improve the utilization ratio in space to perforate the core strip and set up directly over the frictioning clearance, can be behind film coating glue, the core strip directly pushes down and bonds mutually with the film, has reduced the core strip and has removed the time of film top and film bonding, improve the production efficiency of device.

Optionally, a convex block perpendicular to the moving direction of the film is arranged on the lower surface of the connecting block, a groove corresponding to the convex block is formed in the glue scraping base, and connecting holes for bolts to penetrate through are formed in the convex block and the groove.

By adopting the technical scheme, in the process that the film and the core strip move forwards, the glue pressing base is likely to generate a trend of moving along the advancing direction of the core strip relative to the glue scraping base under the sliding drive of the core strip, the arrangement of the convex block and the groove can block the movement of the glue pressing base along the advancing direction of the core strip, and the connection stability of the glue pressing base and the glue scraping base is improved; and the connecting holes are formed in the convex block and the groove, and the bolts penetrate through the connecting holes, so that the connection between the glue pressing base and the glue scraping base is realized, and the connection tightness between the glue pressing base and the glue scraping base is improved.

Optionally, the film coating device further comprises a main base, the glue pressing base and the glue scraping base are connected to the main base, a shaping cavity is further arranged on the main base, a film shaping groove is formed between the shaping cavity and the glue pressing base, and the notch of the film shaping groove is opposite to the glue scraping gap.

Through above-mentioned technical scheme, membrane material design groove notch is just to the frictioning clearance for film horizontal migration after the coating glue is to membrane material design groove, and get into design cavity through membrane material design groove together with the core strip, realize that the film is stereotyped to the cladding of core strip, realize that film coating glue and cladding core strip are stereotyped integratively, reduced manufacturing cost, improved production efficiency.

In summary, the present application includes at least one of the following beneficial technical effects:

the automatic filling of the glue can be realized through the glue pressing piece, the condition that the glue is unevenly coated due to glue shortage is reduced, the uniformity of the glue coated on the film is improved, and the consistency of the product quality is improved;

quantitative filling is carried out through the needle cylinder, so that the glue can be effectively and fully utilized, the condition of glue shortage in the midway can be reduced, and the production efficiency of the device is improved;

offer on the connecting block and hold the groove and be used for the bearing to place the cylinder, the lock groove of rethread clamp splice is further fixed the cylinder to improve the stability of cylinder on the moulding bed.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

FIG. 2 is a sectional view of an embodiment of the present application taken along the direction of advance of the film.

Fig. 3 is a sectional view along the axis of the glue injection hole in the embodiment of the present application.

Fig. 4 is a schematic structural view of a glue pressing base according to an embodiment of the application.

Fig. 5 is a schematic structural diagram of a frictioning base according to an embodiment of the present application.

Description of reference numerals: 1. pressing a rubber base; 11. rong Jiaokuai; 12. connecting blocks; 121. a bump; 122. perforating the core strip; 13. a glue containing chamber; 131. a through hole; 132. injecting glue holes; 14. gluing a slot; 2. a frictioning base; 21. a material guide chute; 22. a groove; 3. pressing a rubber piece; 31. a seal ring; 4. a spring; 5. pouring a glue piece; 6. a clamping block; 7. a main base; 71. a film material shaping groove; 72. and a shaping chamber.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a glue coating device for a film. Referring to fig. 1, a film coating apparatus includes a squeegee base 1, a squeegee base 2, a squeegee 3, a potting 5, and a main base 7. The main base 7 is connected with the glue pressing base 1 and the glue scraping base 2, the glue pressing base 1 is used for applying pressure to glue to promote quick and uniform coating of the glue, and the glue scraping base 2 is used for scraping the glue coated on the film.

Referring to fig. 2, a glue containing chamber 13 for containing glue is formed on the glue pressing base 1 and used for pouring glue and extruding the glue to the film; the glue pressing piece 3 is accommodated in the glue containing cavity 13 and is connected with the glue pressing base 1 in a vertical sliding mode and used for applying stable continuous pressure to the glue in the glue containing cavity 13. Glue containing cavity 13 is provided with a through hole 131 communicated with glue pouring piece 5, and glue is poured into glue containing cavity 13 by glue pouring piece 5 through hole 131.

Referring to fig. 3 and 5, the glue containing chamber 13 is provided with two glue injecting holes 132, the glue pressing base 1 is connected with the glue scraping base 2, the glue coating slot 14 is arranged at the bottom of the glue pressing base 1, the glue scraping base 2 is provided with the material guide slot 21, the glue coating slot 14 is communicated with the material guide slot 21, the glue flows into the glue coating slot 14 through the glue injecting holes 132, and the glue in the glue coating slot 14 is coated on the film in the material guide slot 21.

Referring to fig. 2, the glue pressing base 1 comprises a glue containing block 11 and a connecting block 12, a glue containing cavity 13 extending along the vertical direction is arranged in the glue containing block 11, and the glue containing block 11 is used for containing the glue pressing piece 3 and glue; the connecting block 12 is vertically and integrally connected with the glue containing block 11 along the horizontal direction, and is used for fixing the glue filling piece 5 and connecting with the glue scraping base 2.

In the embodiment of this application, hold gluey chamber 13 and be cylindric, reduce and press gluey 3 to slide and connect in holding gluey chamber 13's resistance, in other embodiments, hold gluey chamber 13 and also can be other shapes, for example triangular prism or cuboid.

Referring to fig. 2, a supporting groove is arranged at one end of the upper surface of the connecting block 12, which is far away from the glue containing block 11, and the glue pouring piece 5 is placed in the supporting groove, so that glue is stably poured into the glue containing cavity 13; can dismantle on the connecting block 12 and connect the clamp splice 6 that is equipped with the lock groove with standing groove matched with, clamp splice 6 passes through bolt-up cooperation with connecting block 12 and fixes the centre gripping of encapsulating 5 on connecting block 12, reduces encapsulating 5 and is connected unstablely and the condition of overflowing gluing with connecting block 12, has improved the stability that glue filled.

Referring to fig. 2, the glue-pouring member 5 is a quantitative syringe, i.e. the placing grooves on the connecting block 12 and the clamping block 6 are also arc-shaped. One end of the head of the needle cylinder is inserted into the bottom through hole 131 of the glue containing chamber 13, and the other end of the head of the needle cylinder realizes the pouring of glue through the operation of manually pushing the piston by hand or a glue dispensing machine. Specifically, cylinder horizontal connection is on connecting block 12, through the upper and lower centre gripping cooperation of clamp splice 6 with connecting block 12, blocks the tendency of cylinder because of the vertical direction motion of the production of self gravity to improve the stability of cylinder encapsulating.

Referring to fig. 2, the glue pressing piece 3 is also cylindrical and has a length greater than the axial length of the glue accommodating chamber 13, a spring 4 is vertically connected above the glue pressing piece 3, a baffle is connected to the glue pressing base 1, and the other end of the spring 4 is fixed by the baffle. When the spring 4 is in an uncompressed state, a certain space is formed in the glue containing chamber 13 for injecting glue. Glue is injected into the glue containing chamber 13 by the needle cylinder through the through hole 131, the glue is injected from bottom to top to lift the glue pressing piece 3 upwards and extrude the spring 4 upwards to deform the spring 4. After the glue is injected, vertical pressure is applied to the glue under the action of the gravity of the glue pressing piece 3 and the elastic force of the spring 4, the flowing speed of the glue is accelerated, the glue can be continuously filled, and the condition that the glue is not uniformly coated on a film due to glue shortage is reduced.

In the embodiment, the glue pressing piece 3 is a metal block, the metal density is higher, the gravity of the glue pressing piece is also higher, and the pressure on the glue can be increased, so that the flowing speed of the glue is increased, and the production efficiency is improved; other materials, such as wood or plastic blocks, are also possible in other embodiments.

Referring to fig. 3, a sealing ring 31 is disposed on the outer periphery of the bottom of the glue pressing member 3 for sealing the glue accommodating chamber 13, so as to reduce the occurrence of bubbles in the glue due to air entering, specifically, the sealing ring 31 is made of rubber.

Referring to fig. 4 and 5, the lower surface of the connecting block 12 is provided with a bump 121, the bump 121 is arranged perpendicular to the advancing mode of the film, the frictioning base 2 is provided with a groove 22, the groove 22 is matched with the bump 121, the connection between the connecting block 12 and the frictioning base 2 is realized, and the connecting block 12 is prevented from being driven by the film to move forward in the forward moving process of the film.

Referring to fig. 4 and 5, two connecting holes are respectively formed in corresponding positions of the protrusion 121 and the groove 22, the arrangement direction of the connecting holes is the same as the extending direction of the glue spreading groove 14, and a bolt penetrates through the connecting holes to connect the connecting block 12 and the glue scraping base 2, so that the connecting block 12 and the glue scraping base 2 are tightly connected, and the tightness of the connection between the glue pressing base 1 and the glue scraping base 2 is improved.

Referring to fig. 4 and 5, the glue groove 14 is located at the lower end of the bump 121, an opening is formed in the lower side of the glue groove 14 and communicated with the material guide groove 21, the film is placed in a gap formed by the material guide groove 21 and the glue pressing base 1, and when the film moves to the glue groove 14, glue in the glue groove 14 is injected from two sides of the film and is coated on the surface of the film; the open end of the glue coating groove 14 extends towards one side of the guide groove 21 to form a glue scraping gap with the bottom surface of the guide groove 21, and the film coated with glue scrapes off redundant glue on the surface under the glue scraping effect of the glue scraping gap, so that the thickness of the glue on the surface of the film is kept consistent, and the uniformity of glue coating on the film is improved.

Referring to fig. 3, the core bar perforation holes 122 are disposed between the two glue injection holes 132, directly above the glue spreading gap, and are disposed in parallel along the advancing direction of the film, and the core bars are placed between the core bar perforation holes 122, move forward together with the film, and are adhered to the film after the glue application of the film is completed. Specifically, in the present embodiment, the core rod through hole 122 has an elliptical cross section in the vertical direction.

Referring to fig. 1, a main base 7 is used for fixing a frictioning base 2 and a glue pressing base 1, a film material shaping groove 71 and a shaping cavity 72 are further formed in the main base 7, a film coated with glue extends out of the glue pressing base 1 and enters the film material shaping groove 71 together with a core strip, the section of the specific film material shaping groove 71 is arc-shaped, the core strip and the film are conveniently introduced into the shaping cavity 72 formed by bonding the film and the core strip together, and the shaping cavity 72 forms the film coated with the core strip.

The glue coating device for the film in the embodiment of the application has the implementation principle that: glue is firstly injected into the quantitative needle cylinder, the needle cylinder is inserted into the through hole 131 in the glue containing chamber 13 to inject the glue into the glue containing chamber 13, the glue is lifted upwards to be pressed into the glue piece 3 and the spring 4 after entering the glue containing chamber 13, the spring 4 contracts to store elasticity, after the glue injection is finished, the glue is pressed into the glue injection hole 132 under the self gravity extrusion of the glue pressing piece 3 and the elastic double-layer pressure of the spring 4, then the glue enters the glue injection groove 14 from the glue injection hole 132, then the glue is coated on a film in the guide groove 21 below the glue injection groove 14, the film moves forwards after being coated with the glue, the redundant glue on the surface of the film through the glue scraping gap is scraped, and the uniformity of glue coating on the film is ensured.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A glue coating device for thin films is characterized in that: the glue spreading device comprises a glue filling piece (5), a glue pressing base (1), a glue pressing piece (3) and a glue scraping base (2), wherein the glue pressing base (1) is provided with a glue containing cavity (13), and the glue pressing piece (3) can vertically slide and extend into the glue containing cavity (13); the glue accommodating cavity (13) is provided with a through hole (131) and a glue injection hole (132), and the glue pressing base (1) is connected with the glue injection piece (5) through the through hole (131); the frictioning base (2) is connected below the rubber pressing base (1), and a guide chute (21) for placing a film is arranged on the frictioning base (2); the glue pressing base (1) is provided with a glue coating groove (14) at the bottom, the upper end of the glue coating groove (14) is communicated with the glue injection hole (132), and the opening of the glue coating groove (14) faces to the lower guide chute (21).

2. Glue application device for films according to claim 1, characterised in that: the rubber pressing piece (3) is connected with a spring (4), the spring (4) is arranged in the vertical direction, one end of the spring (4) is connected to the upper end of the rubber pressing piece (3), and the other end of the spring is relatively fixed with the rubber pressing base (1); when the spring (4) is in an uncompressed state, the glue pressing piece (3) and the bottom of the glue containing cavity (13) are provided with a space for injecting glue.

3. Glue application device for films according to claim 1, characterised in that: the glue filling piece (5) is a needle cylinder, and a glue outlet head of the needle cylinder is inserted into a through hole (131) of the glue containing chamber (13).

4. Glue application device for films according to claim 1, characterised in that: and a sealing ring (31) is connected to the outer peripheral side of the rubber pressing piece (3), and the sealing ring (31) is tightly abutted to the inner wall of the rubber containing cavity (13).

5. Glue application device for films according to claim 3, characterised in that: press gluey seat (1) including be equipped with hold gluey chamber (13) hold gluey piece (11) and with frictioning connecting block (12) that base (2) are connected, connecting block (12) and Rong Jiaokuai (11) an organic whole set up, annotate gluey hole (132) and run through and locate the connection position of connecting block (12) and Rong Jiaokuai (11), rubber coating groove (14) are located connecting block (12) lower surface, rubber coating groove (14) open end with baffle box (21) bottom surface forms the frictioning clearance.

6. Glue application device for films according to claim 1, characterised in that: the glue injection holes (132) are symmetrically distributed at the bottom end of the glue containing chamber (13), the arrangement direction of the two glue injection holes (132) is perpendicular to the moving direction of the film, and two ends of the glue coating groove (14) are communicated with the two glue injection holes (132).

7. Glue application device for films according to claim 5, characterised in that: the glue containing block (11) is far away from one side of the connecting block (12), a bearing groove for placing the needle cylinder is formed in the side, away from the glue containing block (11), of the connecting block (12), a clamping block (6) is connected onto the connecting block (12), the clamping block (6) is provided with a buckling groove matched with the bearing groove, and the clamping block (6) and the connecting block (12) are matched to form a placing area for placing the needle cylinder.

8. Glue application device for films according to claim 7, characterised in that: a core bar through hole (122) is formed in the connecting block (12), the core bar through hole (122) is located between the two glue injection holes (132) and is located right above the glue scraping gap, and the core bar through hole (122) is arranged along the moving direction of the thin film.

9. Glue application device for films according to claim 8, characterised in that: the lower surface of the connecting block (12) is provided with a convex block (121) perpendicular to the moving direction of the film, the glue scraping base (2) is provided with a groove (22) corresponding to the convex block (121), and the convex block (121) and the groove (22) are provided with connecting holes for bolts to pass through.

10. Glue application device for films according to claim 1, characterised in that: glue coating device still includes main base (7), glue pressing seat (1) and frictioning base (2) are connected on main base (7), still be equipped with design cavity (72) on main base (7), be equipped with membrane material setting groove (71) between design cavity (72) and glue pressing seat (1), membrane material setting groove (71) notch is just to the frictioning clearance.

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