CN210897517U

CN210897517U - Sheet lithium battery side rubberizing device

Info

Publication number: CN210897517U
Application number: CN201922145786.7U
Authority: CN
Inventors: 罗强; 刘洁讯
Original assignee: Huizhou New Jinke Energy Development Co ltd
Current assignee: Huizhou Juxian Energy Technology Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-06-30
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a slice lithium cell side rubberizing device, including base, rubberizing mechanism, send gluey mechanism, fixed tool and film seat all set up on the base, fixed tool sets up with rubberizing mechanism relatively, send gluey mechanism to set up in one side of fixed tool and rubberizing mechanism, the film seat sets up near sending gluey mechanism. The utility model is used for slice lithium cell both sides rubberizing.

Description

Sheet lithium battery side rubberizing device

Technical Field

The utility model relates to a lithium battery processing equipment technical field, concretely relates to slice lithium battery side rubberizing device.

Background

The battery is the energy supply device of mobile device, be commonly used in fields such as cell-phone, notebook computer, electric motor car, small-size mobile device such as cell-phone generally uses the slice lithium cell (as shown in fig. 6), need wrap the membrane material in the periphery after the processing of slice lithium cell internal structure is accomplished and protect, general membrane material is planar sheet structure, the membrane material passes through the periphery of hot pressing cladding at lithium cell major structure during the cladding, can leave convex bonding position b in the side behind the hot pressing, bonding position b influences the pleasing to the eye of lithium cell promptly, also influence the installation of lithium cell in mobile device such as cell-phone, therefore need bond bonding position b through the adhesive tape and fix on cell major structure. At present, a machine is generally adopted to divide a film into film sections, and the film sections are manually bonded on a lithium battery, so that the operation mode needs more manpower and low operation efficiency, and the adhesive sticking consistency is poor, thereby affecting the product quality.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to the not enough in the background art, provide the slice lithium cell side rubberizing device that can solve.

In order to solve the technical problem, the technical scheme of the utility model is that: a sheet-shaped lithium battery side rubberizing device comprises a base, a rubberizing mechanism, a glue feeding mechanism, a fixing jig and a film base, wherein the rubberizing mechanism, the glue feeding mechanism, the fixing jig and the film base are all arranged on the base; the adhesive tape sticking mechanism comprises a first slide rail, an adhesive tape sticking assembly and a first telescopic driving piece, the first slide rail is fixed on the base, the adhesive tape sticking assembly is arranged on the first slide rail in a sliding mode, and the first telescopic driving piece drives the adhesive tape sticking assembly to slide to be close to or far away from the fixed jig; the rubberizing assembly comprises a U-shaped block, a pressing block and a first spring, and the pressing block is elastically connected in the U-shaped groove of the U-shaped block through the first spring; the pressing block can fix or loosen the adhesive tape; the glue feeding mechanism comprises a second slide rail, a slide block, a suction block, a cutting knife and a second telescopic driving piece, the second slide rail is fixed on the base, the slide block is arranged on the second slide rail in a sliding mode, and the second telescopic driving piece drives the slide block to be close to or far away from the fixed jig and the gluing mechanism; the cutting knife is fixed on the sliding block at a position close to the fixed jig and the rubberizing mechanism, and the suction block is fixed at a position far away from the fixed jig and the rubberizing mechanism; the suction block can fix or loosen the adhesive tape, and the cutting knife can cut off the adhesive tape.

Furthermore, negative pressure suction holes are formed in the opposite sides of the pressing block and the suction block; the cutting knife is driven by a third telescopic driving piece, and the third telescopic driving piece drives the cutting knife to stretch to one side of the rubberizing mechanism.

Further, fixed tool includes anchor clamps and rotary driving spare, rotary driving spare drive anchor clamps rotate 180 on the base.

Further, the clamp comprises a bottom plate, a movable clamping block, a second spring and a fixed clamping block, wherein the movable clamping block and the fixed clamping block are arranged on two opposite sides of the bottom plate, the movable clamping block is elastically arranged on the bottom plate through the second spring, and an avoiding groove is formed in the fixed clamping block.

The glue feeding mechanism is arranged on the base and is opposite to the glue feeding mechanism; the glue pressing mechanism can press and fix the glue strip on the gluing mechanism or loosen the glue strip from the gluing mechanism.

Furthermore, the glue pressing mechanism comprises a third slide rail, a pressing plate and a fourth telescopic driving piece, the third slide rail is fixed on the base, the pressing plate is arranged on the third slide rail in a sliding manner, and the fourth telescopic driving piece drives the pressing plate to be close to or far away from the glue feeding mechanism; and one side of the pressing plate, which is close to the adhesive sticking mechanism, is provided with air blowing holes and salient points which are arranged in a staggered manner.

The utility model discloses the beneficial effect who realizes mainly has following several: the rubberizing subassembly sets up U-shaped piece and briquetting, the briquetting is at the U-shaped inslot of U-shaped piece through first spring elastic connection, can withdraw when making the briquetting pressurized, form U-shaped groove structure together with the U-shaped piece, buckle into the U-shaped attached outside the sheet battery with the flaky adhesive tape on the briquetting, automatic U-shaped rubberizing on the sheet lithium cell has been realized, and accomplish the rubberizing of U-shaped structure through a actuating mechanism, need not additionally increase actuating mechanism and come the adhesive tape and buckle into the U-shaped, the equipment structure is simplified, the equipment cost is reduced, and reliability and stability when having improved equipment usage. Through the sucking block and the cutting knife that move on sending gluey mechanism, can accomplish unreeling and the dissection of coil stock adhesive tape with the cooperation of rubberizing mechanism, realize continuous automatic adhesive tape material loading, improve the work efficiency of rubberizing.

Drawings

Fig. 1 is a schematic structural diagram of an entire sheet-shaped lithium battery side rubberizing device according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a tape sticking assembly of a tape sticking device for a side surface of a sheet-shaped lithium battery according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a transverse cross-sectional structure of a middle portion of a tape sticking assembly of a tape sticking device for a side surface of a sheet-shaped lithium battery according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a fixture of a lateral gluing device for a sheet-shaped lithium battery according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a pressing plate of a lateral gluing device for a sheet-shaped lithium battery according to a second embodiment of the present invention;

fig. 6 is a schematic structural diagram of a sheet-shaped lithium battery processed by a sheet-shaped lithium battery side rubberizing device in one or two embodiments of the present invention before rubberizing;

fig. 7 is a schematic structural diagram of the first or second embodiment of the present invention after the rubberizing of the sheet-shaped lithium battery processed by the rubberizing device for the side surface of the sheet-shaped lithium battery.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.

Detailed Description

To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Example one

Referring to fig. 1 to 7, a device for applying glue to the side surface of a sheet lithium battery is used for bonding the side surface of a sheet lithium battery membrane after packaging, and a protruding bonding position can be bonded on a main structure of the lithium battery by using a glue strip. The side rubberizing device of the flaky lithium battery comprises a base 1, a rubberizing mechanism 2, a glue feeding mechanism 3, a fixing jig 4 and a film seat 5, wherein the base 1 is an installation structure, the rubberizing mechanism 2, the glue feeding mechanism 3, the fixing jig 4 and the film seat 5 are all arranged on the base 1, and the base 1 can be of a plate-shaped structure or a frame-shaped structure. Fixed tool 4 sets up with rubberizing mechanism 2 is relative, and fixed tool 4 is used for fixing the slice lithium cell of treating the rubberizing, and rubberizing mechanism 2 can remove to the lithium cell rubberizing that fixed tool 4 position is on it. Send gluey mechanism 3 to set up in one side of fixed tool 4 and rubberizing mechanism 2, send gluey mechanism 3 to remove near rubberizing mechanism 2, send gluey mechanism 3 to continuously carry the adhesive tape for rubberizing mechanism 2, make things convenient for rubberizing mechanism 2 to continuously carry out the rubberizing. The film seat 5 is arranged near the film feeding mechanism 3 and can be used for installing the whole roll of film, the film released by the film is connected to the film feeding mechanism 3 and is cut into sectional adhesive tapes by the film feeding mechanism 3 for the adhesive tape sticking mechanism 2 to use; the film holder 5 can adopt a roller which can rotate freely, the film can be rotatably placed on the roller, and the roller is driven to rotate by the movement of the film feeding mechanism 3 to unreel; alternatively, guide rollers may be provided in the film holder 5 and the film feeding mechanism 3 to guide the adhesive tape from the film holder 5 to the film feeding mechanism 3.

Referring to fig. 1-3, the rubberizing mechanism 2 is arranged at the rear side of the base 1, and specifically can adopt the following structure: the device comprises a first slide rail 21, a rubberizing component 22 and a first telescopic driving component 23, wherein the first slide rail 21 is fixed on a base 1 and arranged in the front-back direction; the rubberizing assembly 22 is slidably disposed on the first slide rail 21, and slides back and forth on the first slide rail 21; the first telescopic driving piece 23 drives the rubberizing assembly 22 to slide to be close to or far away from the fixing jig 4, the close fixing jig 4 is used for rubberizing the sheet lithium battery thereon, and the rubberizing assembly 22 is far away from the fixing jig 4 after rubberizing is finished; the first telescopic driving member 23 may be a telescopic cylinder, a screw mechanism, or other common telescopic driving members.

Referring to fig. 1 to 3, the rubberizing assembly 22 includes a U-shaped block 221, a pressing block 222, and a first spring 223, wherein a longitudinal section of the U-shaped block 221 in the front-rear direction is U-shaped (a size of a U-shaped opening is consistent with a thickness of a sheet-shaped lithium battery to be rubberized), and the pressing block 222 is elastically connected in the U-shaped groove of the U-shaped block 221 through the first spring 223. The outer side surface of the pressing block 222 is flush with the outer side surface of the U-shaped block 221 in a natural state; when the pressing piece 222 is pressed, the pressing piece 222 can be retracted into the U-shaped block 221 by a compression spring, so that a U-shaped groove structure is formed in the U-shaped block 221. The pressing block 222 can fix or loosen the adhesive tape, the pressing block 222 is firstly matched with the adhesive tape feeding mechanism 3 to cut off a section of adhesive tape from the whole roll of adhesive tape, then the adhesive tape cut off by the pressing block 222 is pasted, and the pressing block 222 loosens the adhesive tape after the adhesive tape is pasted on the battery. The specific pressing block 222 can be provided with a negative pressure adsorption hole 224, and the negative pressure adsorption hole 224 is communicated with vacuum sources such as a vacuum pump, so that the adhesive tape is adsorbed and fixed through negative pressure, the negative pressure source is disconnected, and the adhesive tape can be loosened by recovering normal pressure. Set up U-shaped piece 221 and briquetting 222, briquetting 222 is through first spring 223 elastic connection in the U-shaped inslot of U-shaped piece 221, can retract when making briquetting 222 pressurized, form U-shaped groove structure together with U-shaped piece 221, it is attached in the sheet battery outside to buckle the flaky adhesive tape on briquetting 222 into the U-shaped, automatic U-shaped rubberizing on the sheet lithium cell has been realized, and accomplish the rubberizing of U-shaped structure through a actuating mechanism, need not additionally increase actuating mechanism and buckle the U-shaped with the adhesive tape, the equipment structure has been simplified, the equipment cost is reduced, and reliability and stability when having improved the equipment use.

Referring to fig. 1-3, 6 and 7, the operation of applying the adhesive to the adhesive applying assembly 22 is as follows: after the pressing block 222 fixes the adhesive tape d, the first telescopic driving member 23 drives the adhesive tape sticking assembly 22 to move to the position of the fixing jig 4, and at the moment, the adhesive tape d attached to the pressing block 222 abuts against the side face of the sheet-shaped lithium battery a (the thickness of the sheet-shaped lithium battery a is consistent with the size of the opening of the U-shaped block 221, and is consistent with the thickness of the pressing block 222 or thicker than the pressing block 222); then, the first telescopic driving member 23 continues to drive the rubberizing assembly 22 to move towards the fixed jig 4, the pressing block 222 is relatively fixed with the sheet lithium battery a at the moment, the U-shaped block 221 and the pressing block 222 move relatively due to elastic compression of the spring to form a U-shaped groove-shaped structure and are sleeved outside the sheet lithium battery a, so that the sheet adhesive tape d is bent into a U shape and attached to one side of the sheet lithium battery a, and rubberizing of the U-shaped structure is formed on one side of the sheet lithium battery.

Referring to fig. 1, the glue feeding mechanism 3 is disposed at the right side of the base 1, and may specifically adopt the following structure: the cutting device comprises a second slide rail 31, a slide block 32, a suction block 33, a cutting knife 34 and a second telescopic driving piece 35, wherein the second slide rail 31 is fixed on the base 1, and the action direction of the second slide rail is fixed on the base 1; the sliding block 32 is arranged on the second sliding rail 31 in a sliding manner and is used for installing a suction block 33 and a cutting knife 34; the second telescopic driving piece 35 drives the sliding block 32 to be close to or far away from the fixed jig 4 and the rubberizing mechanism 2, so that the adhesive tape can be conveyed to the rubberizing mechanism 2 through cyclic motion; the second telescopic driving member 35 may adopt a telescopic cylinder, a screw mechanism, a rack and pinion mechanism, etc. The cutting knife 34 is fixed on the slide block 32 at a position close to the fixed jig 4 and the rubberizing mechanism 2, and the suction block 33 is fixed at a position far away from the fixed jig 4 and the rubberizing mechanism 2; the suction block 33 can fix or release the adhesive tape, the cutting knife 34 can cut off the adhesive tape, and the suction block 33 can be specifically arranged with reference to the pressing block 222. The cutting knife 34 can be driven by a third telescopic driving piece 36, and the third telescopic driving piece 36 drives the cutting knife 34 to stretch towards one side of the adhesive tape sticking mechanism 2 to cut off the adhesive tape; the third telescopic driving member 36 may also be a telescopic cylinder, a screw mechanism, a rack and pinion mechanism, or the like. Through the sucking block 33 and the cutting knife 34 that move on the glue feeding mechanism 3, can cooperate with the rubberizing mechanism 2 to accomplish unreeling and sectioning of coil stock adhesive tape, realize continuous automatic adhesive tape material loading, improve rubberizing work efficiency.

Referring to fig. 1, when the adhesive tape is conveyed by the adhesive tape conveying mechanism 3, one end of the adhesive tape is adsorbed and fixed by the adsorption block 33, and then the slide block 32 is driven by the second telescopic driving piece 35 to move so as to drive the adsorption block 33 to move to the front of the pressing block 222; then the suction block 33 loosens one end of the adhesive tape, and meanwhile the pressing block 222 sucks and fixes one end of the adhesive tape; then the second telescopic driving piece 35 drives the sliding block 32 to reset, the suction block 33 adsorbs the middle position of the adhesive tape after resetting, the cutting knife 34 cuts off the adhesive tape between the pressing block 222 and the suction block 33, and the cut adhesive tape is adsorbed and fixed by the pressing block 222; the adhesive tape feeding mechanism 3 is used for conveying a section of adhesive tape to the pressing block 222, the adhesive sticking mechanism 2 can stick the adhesive tape, and the adhesive tape feeding mechanism 3 can repeat the actions when the adhesive tape is conveyed next time.

Referring to fig. 1 and 4, the fixing jig 4 is disposed at a front position of the base 1, and may have the following structure: the clamp comprises a clamp 41 and a rotary driving piece 42, wherein the rotary driving piece 42 drives the clamp 41 to rotate on a base 1 by 180 degrees; therefore, when the sheet lithium battery a is pasted with the adhesive, one side can be pasted with the other side continuously by driving the clamp 41 to rotate 180 degrees through the rotary driving piece 42, and the adhesive pasting efficiency can be improved through automatic overturning. The rotary drive member 42 may be a conventional rotary drive member such as a rotary cylinder or a servo motor.

Referring to fig. 1 and 4, the fixture 41 includes a bottom plate 411, a movable clamping block 412, a second spring 413 and a fixed clamping block 414, the movable clamping block 412 and the fixed clamping block 414 are disposed on two opposite sides of the bottom plate 411, and the movable clamping block 412 is elastically disposed on the bottom plate 411 through the second spring 413, so that the sheet-shaped lithium battery a can be elastically clamped by the movable clamping block 412 when being mounted on the fixture 41, and can also be adapted to the sheet-shaped lithium batteries a with different lengths to be clamped on the fixture 41; the fixing clamp 414 is fixedly disposed on the bottom plate 411, and may be an integral structure of the bottom plate 411 or an independent structure fixed on the bottom plate 411 by screws. Both sides of the bottom plate 411 except the movable clamping blocks 412 and the fixed clamping blocks 414 are not provided with blocking structures, and the width of the bottom plate 411 is narrower than that of the glued sheet-shaped lithium battery, so that the gluing parts on both sides of the sheet-shaped lithium battery are exposed from the front side and the rear side of the bottom plate 411, and the gluing mechanism 2 is convenient. The fixing clamp block 414 is further provided with an avoiding groove 415 to avoid the tab c of the sheet lithium battery a.

When the device for sticking the adhesive on the side surface of the sheet lithium battery is used for sticking the adhesive, the film is arranged on the film seat 5, the adhesive feeding section is fed to the adhesive sticking mechanism 2 through the adhesive feeding mechanism 3, the sheet lithium battery a is fixed through the fixing jig 4, and the adhesive is stuck on the sheet lithium battery a through the adhesive mechanism 2; after one side is pasted, the fixed jig 4 rotates 180 degrees to paste the other side.

Example two

Referring to fig. 1 to 7, the sheet-shaped lithium battery side surface gluing device of the embodiment is the same as that of the first embodiment except that a glue pressing mechanism 6 is further arranged on the basis of the first embodiment, the glue pressing mechanism 6 is arranged opposite to the glue feeding mechanism 3 and arranged at the left side position on the base 1, and the glue pressing mechanism 6 can press and fix a glue strip on the gluing mechanism 2 or loosen the glue strip from the gluing mechanism 2. After briquetting 222 adsorbs the one end of adhesive tape, can further press the one end of adhesive tape admittedly on briquetting 222 through moulding mechanism 6 when cutting sword 34 cuts off the adhesive tape (rubberizing subassembly 22 action makes the adhesive tape press admittedly between moulding mechanism 6 and briquetting 222) to it is firmer to make both ends press admittedly more when the adhesive tape cuts off, cuts off the position more accurate when cutting off the adhesive tape, and then improves the uniformity of rubberizing on the slice lithium cell.

Referring to fig. 1 and 5, the glue pressing mechanism 6 includes a third slide rail 61, a pressing plate 62 and a fourth telescopic driving member 63, the third slide rail 61 is fixed on the base 1 in the left-right direction, the pressing plate 62 is slidably disposed on the third slide rail 61, and the fourth telescopic driving member 63 drives the pressing plate 62 to approach or be away from the glue feeding mechanism 3, and move to the gluing mechanism 2 to be matched with the gluing mechanism. A blowing hole 621 and a convex point 622 are arranged on one side of the pressing plate 62 close to the adhesive tape sticking mechanism 2, the blowing hole 621 is connected with an air source such as an air pump, and the convex point 622 can adopt a circular bulge with smooth appearance to avoid damaging the adhesive tape; the air blowing holes 621 and the protruding points 622 are arranged in a staggered mode, so that the pressing effect of the pressing plate 62 and the effect of putting down the rubber strips are better. When the glue pressing mechanism 6 presses one end of the glue strip on the pressing block 222, one end of the glue strip can be pressed on the pressing block 222 through the convex points 622, and when the cutting knife 34 finishes cutting one end of the glue strip, which needs to be loosened by the glue pressing mechanism 6, the air can be blown fast through the air blowing holes 621 to put down the glue strip, so that the glue strip is fixed on the pressing block 222 for gluing.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a slice lithium battery side rubberizing device which characterized in that: the automatic film laminating machine comprises a base (1), a laminating mechanism (2), a film feeding mechanism (3), a fixing jig (4) and a film base (5), wherein the laminating mechanism (2), the film feeding mechanism (3), the fixing jig (4) and the film base (5) are all arranged on the base (1), the fixing jig (4) and the laminating mechanism (2) are arranged oppositely, the film feeding mechanism (3) is arranged on one side of the fixing jig (4) and the laminating mechanism (2), and the film base (5) is arranged near the film feeding mechanism (3);

the adhesive sticking mechanism (2) comprises a first slide rail (21), an adhesive sticking component (22) and a first telescopic driving piece (23), the first slide rail (21) is fixed on the base (1), the adhesive sticking component (22) is arranged on the first slide rail (21) in a sliding mode, and the first telescopic driving piece (23) drives the adhesive sticking component (22) to slide to be close to or far away from the fixed jig (4); the rubberizing assembly (22) comprises a U-shaped block (221), a pressing block (222) and a first spring (223), wherein the pressing block (222) is elastically connected in a U-shaped groove of the U-shaped block (221) through the first spring (223); the pressing block (222) can fix or release the adhesive tape;

the glue feeding mechanism (3) comprises a second slide rail (31), a slide block (32), a suction block (33), a cutting knife (34) and a second telescopic driving piece (35), the second slide rail (31) is fixed on the base (1), the slide block (32) is arranged on the second slide rail (31) in a sliding mode, and the second telescopic driving piece (35) drives the slide block (32) to be close to or far away from the fixed jig (4) and the gluing mechanism (2); the cutting knife (34) is fixed on the sliding block (32) at a position close to the fixed jig (4) and the rubberizing mechanism (2), and the suction block (33) is fixed at a position far away from the fixed jig (4) and the rubberizing mechanism (2); the suction block (33) can fix or loosen the adhesive tape, and the cutting knife (34) can cut off the adhesive tape.

2. The sheet-like lithium battery side rubberizing device according to claim 1, wherein: negative pressure suction holes are formed in the opposite sides of the pressing block (222) and the suction block (33); the cutting knife (34) is driven by a third telescopic driving piece (36), and the third telescopic driving piece (36) drives the cutting knife (34) to stretch out and draw back to one side of the rubberizing mechanism (2).

3. The sheet-like lithium battery side rubberizing device according to claim 1, wherein: the fixed jig (4) comprises a clamp (41) and a rotary driving piece (42), wherein the rotary driving piece (42) drives the clamp (41) to rotate on the base (1) for 180 degrees.

4. The sheet-like lithium battery side rubberizing device according to claim 3, wherein: the clamp (41) comprises a bottom plate (411), a movable clamping block (412), a second spring (413) and a fixed clamping block (414), wherein the movable clamping block (412) and the fixed clamping block (414) are arranged on two opposite sides of the bottom plate (411), the movable clamping block (412) is elastically arranged on the bottom plate (411) through the second spring (413), and an avoiding groove (415) is formed in the fixed clamping block (414).

5. The sheet-shaped lithium battery side surface rubberizing device according to any one of claims 1 to 4, characterized in that: the glue feeding device is characterized by also comprising a glue pressing mechanism (6), wherein the glue pressing mechanism (6) is arranged on the base (1) and is opposite to the glue feeding mechanism (3); the glue pressing mechanism (6) can press and fix the glue strip on the gluing mechanism (2) or loosen the glue strip from the gluing mechanism (2).

6. The sheet-like lithium battery side rubberizing device according to claim 5, wherein: the glue pressing mechanism (6) comprises a third slide rail (61), a pressing plate (62) and a fourth telescopic driving piece (63), the third slide rail (61) is fixed on the base (1), the pressing plate (62) is arranged on the third slide rail (61) in a sliding mode, and the fourth telescopic driving piece (63) drives the pressing plate (62) to be close to or far away from the glue feeding mechanism (3); one side of the pressing plate (62) close to the rubberizing mechanism (2) is provided with a gas blowing hole (621) and a salient point (622), and the gas blowing hole (621) and the salient point (622) are arranged in a staggered mode.