CN217551424U

CN217551424U - Protection film fixed length automatic feeding mechanism and ultrasonic welding device

Info

Publication number: CN217551424U
Application number: CN202220919693.4U
Authority: CN
Inventors: 杨志豪; 詹可强; 武士亮
Original assignee: Guangdong Takstar Electronic Co ltd
Current assignee: Guangdong Takstar Electronic Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-10-11
Anticipated expiration: 2032-04-15

Abstract

The utility model relates to a protective film fixed-length automatic feeding mechanism and an ultrasonic welding device, which comprise a trigger, a film placing wheel, a first driving motor, a first conveying roller, a second conveying roller, a displacement sensor, a lifting frame, a base and a control module; the lifting frame is fixedly arranged on the base; the film placing wheel, the second conveying roller and the first conveying roller are sequentially arranged on the lifting frame along the transmission direction of the protective film; the first driving motor is in driving connection with the first conveying roller; the displacement sensor is arranged on the transmission channel side; the trigger is arranged on a lifting path of the lifting frame; the control module receives signals of the displacement sensor and the trigger. The utility model realizes high-precision fixed-length conveying of the protective film automatically by arranging the trigger and the displacement sensor; and the protective film is synchronously and dynamically conveyed by double power conveying rollers, so that the protective film is prevented from deforming under tension during transmission.

Description

Protection film fixed length automatic feeding mechanism and ultrasonic welding device

Technical Field

The utility model relates to a welding equipment technical field especially relates to a protection film fixed length automatic feeding mechanism and ultrasonic welding device.

Background

At present, when ultrasonic welding is carried out on certain products, considering that the direct contact between a welding head and the products can affect the surface appearance of the products in the welding process, a protection film is required to be manually or automatically covered on the welding position of the products by a control module, ultrasonic welding is carried out through the protection film, and after the ultrasonic welding is finished, other parts are controlled by the manual or the control module to tear off the used protection film from the products. At present, the whole film sticking process and the film tearing process are manually operated or adopt a complex control module, the manual operation is complex, and the structure of the control module is complex. In addition, in the manual film pasting process, the phenomenon of pasting deviation or missing pasting is easy to occur, the appearance of the product is affected if the protective film is not accurately pasted on the product, and the production efficiency and the production quality are not high; in addition, after the film is manually pasted and torn, the protective films can not be reused basically, the waste of the protective films is large, and the environment is not protected.

In addition, some prior art also carry out fixed length through the drive roller and carry, but, because the membrane material has the ductility, can be the membrane material extension when directly driving through the drive roller, only need to calculate the drive roller and rotate the cycle number and can not accurately judge the transport length of protection film, the control deviation of transport length appears easily.

Therefore, it is urgently needed to provide a device for automatically conveying a protective film with a fixed length, which can solve the above problems more simply and conveniently and can realize the automatic conveying of the protective film with a preset length with high precision.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned technical problem, provide a protection film fixed length automatic feeding mechanism and ultrasonic welding device, solved the problem of fixed length automatic conveying protection film more portably.

The utility model provides a protection film fixed length autoloading mechanism, includes the trigger, puts membrane wheel, a driving motor, first conveying roller, second conveying roller, displacement sensor, elevating rack, base and control module.

The lifting frame is fixedly arranged on the base.

The film placing wheel, the second conveying roller and the first conveying roller are sequentially arranged on the lifting frame along the conveying direction of the protective film, and a conveying channel for conveying the protective film is formed.

The first driving motor is in driving connection with the first conveying roller.

The displacement sensor is arranged on the side of the transmission channel to detect the transmission length of the protective film; the trigger is arranged on a lifting path of the lifting frame so as to detect the descending action of the lifting frame; the control module receives signals of the displacement sensor and the trigger and controls the first driving motor according to the signals of the displacement sensor and the trigger so that the protective film can transmit a specific length.

Preferably, the fixed-length automatic feeding mechanism for the protective film further comprises a second driving motor, and the second driving motor is in driving connection with the second conveying roller.

In some cases, the first conveyor roller comprises a first movable roller and a first fixed roller; the second conveying roller comprises a second movable roller and a second fixed roller; first movable roll with second movable roll all with elevator frame connects, first fixed roll and second fixed roll all with elevator frame fixed connection, just first fixed roll and second fixed roll respectively with butt and formation can hold between first movable roll and the second movable roll the clearance passageway that the protection film passes through.

In other cases, the displacement sensor is a hole site sensor, the protective film is provided with holes at equal intervals, and the hole site sensor calculates the length of the protective film conveyed by detecting the number of the holes on the protective film conveyed by the hole site sensor.

Preferably, the first movable roller is connected to the lifting frame through an elastic mechanism, so that the first movable roller tends to approach the first fixed roller; the second movable roller is connected to the lifting frame through an elastic mechanism, so that the second movable roller tends to approach the second fixed roller.

Preferably, the trigger is a photosensor.

Preferably, the lifting frame comprises a first fixed plate, a second fixed plate, a third fixed plate and a plurality of fixed columns; the first fixing plate is fixedly connected with the third fixing plate through a plurality of fixing columns so as to form a space for accommodating a first conveying roller in a surrounding mode; the second fixed plate is fixedly connected with the third fixed plate through the plurality of fixed columns so as to enclose a space for accommodating the second conveying roller.

Preferably, the protective film fixed-length automatic feeding mechanism further comprises a limiting assembly, the limiting assembly is fixed on the lifting rack, and the transmission path of the protective film is limited in the limiting assembly.

Additionally, the utility model provides an ultrasonic welding device, including ultrasonic bonding head, welding bench, protection film fixed length automatic feeding mechanism adopts foretell protection film fixed length automatic feeding mechanism.

The ultrasonic welding head is arranged on the lifting frame and between the first conveying roller and the second conveying roller, and the welding table is fixedly arranged on the base; and the ultrasonic welding head is matched with the welding table to weld a product after descending along with the lifting frame.

Preferably, a product fixing groove is formed in one surface, which is abutted and matched with the welding head, of the welding table.

The utility model discloses a protection film fixed length automatic feeding mechanism plays following technological effect:

1. when the trigger is triggered, a driving signal is generated and sent to the control module, the control module sends a driving instruction to drive the dual-power conveying roller, the control module can count the descending times of the lifting frame, and after the calculated numerical value reaches the preset descending times of the lifting frame, the first driving motor and the second driving motor are started to drive the dual-power conveying roller to release the film.

2. The hole site collecting device is arranged to detect the number of equidistant hole sites conveyed out, so that the protective film with the preset length can be automatically conveyed, and the hole site error can be automatically compensated to realize high-precision feeding.

3. The protective film is conveyed by the synchronous power of the double-power conveying rollers, so that the protective film is prevented from tension deformation during transmission.

Drawings

Fig. 1 is a schematic view of a first viewing angle structure of a fixed-length automatic feeding mechanism for protective films in the embodiment of the present invention.

Fig. 2 is a schematic view of a second perspective structure of the fixed-length automatic feeding mechanism for protective films in the embodiment of the present disclosure.

Fig. 3 is a schematic cross-sectional structure view of a fixed-length automatic feeding mechanism for protective films in embodiment 1 of this patent.

Fig. 4 is a schematic structural view of an ultrasonic welding apparatus in embodiment 2 of this patent.

Wherein the reference numerals are:

the film feeding device comprises a trigger 10, a displacement sensor 11, a film placing wheel 12, a first conveying roller 20, a second conveying roller 21, a first movable roller 201, a first fixed roller 202, a second movable roller 211 and a second fixed roller 212.

A first drive motor 30, a second drive motor 31.

The lifting frame 40, the first fixing plate 41, the second fixing plate 42, the third fixing plate 43 and the fixing column 44.

A base 50.

A protective film tape 60.

Ultrasonic bonding head 70, and bonding stage 71.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art. Thereby making a clearer definition of the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "head", "tail", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

Example 1:

as shown in fig. 1, 2 and 3, the present embodiment provides a fixed-length automatic feeding mechanism for protective films, which includes a trigger 10, a displacement sensor 11, a film placing wheel 12, a first conveying roller 20, a second conveying roller 21, a first driving motor 30, a lifting frame 40, a base 50 and a control module (not shown).

The elevator frame 40 is fixedly disposed on the base 50.

The film placing wheel 12, the second conveying roller 21 and the first conveying roller 20 are sequentially arranged on the lifting frame 40 along the conveying direction of the protective film strip 60, and a conveying channel for conveying the protective film is formed.

The first driving motor 30 is disposed on the elevating frame 40 and is drivingly connected to the first feeding roller 20 to provide the first feeding roller 20 with a traction force for feeding the protective film tape 60.

The displacement sensor 11 is arranged at the side of a transmission channel for conveying the protective film, the conveying length of the protective film is calculated by monitoring the number of hole sites of the protective film belt 60 which is conveyed, and when the conveying length reaches the length preset by the control module, the displacement sensor 11 sends a signal for stopping the driving motor to the control module; the trigger 10 is disposed on a lifting path of the lifting frame 40, detects a lowering motion of the lifting frame 40 by monitoring a position change of the lifting frame 40, and sends a signal of the driving motor to the control module when the trigger 10 detects the position change of the lifting frame 40.

The control module is used for receiving signals of the trigger 10 and the displacement sensor 11 and controlling the first driving motor 30 to transmit a preset protective film length according to the signals of the trigger 10 and the displacement sensor 11. It should be noted that the control module in this embodiment may be implemented by a programmable system such as a PLC control system, a minimum system, and the like in the prior art.

In some preferred embodiments, the protective film strip 60 is easy to be pulled and stretched by the conveying roller during conveying due to its weak tensile resistance, so that the protective performance is reduced, and the problem of the reduction of the protective performance of the protective film strip 60 is avoided. The lifting frame 40 is further provided with a second driving motor 31, the second driving motor 31 is in driving connection with the second conveying rollers 21 to form the double-power conveying roller synchronous conveying protective film belt 60, and the sections of the protective film belt 60 between the two conveying rollers can be effectively prevented from being deformed due to dragging of transmission power at the same conveying speed of the two conveying rollers.

The first conveying roller 20 includes a first movable roller 201 and a first fixed roller 202; the second conveying roller 21 includes a second movable roller 211 and a second fixed roller 212.

First movable roll 201 and second movable roll 211 all are connected with elevator frame 40, and first fixed roll 202 and second fixed roll 212 all with elevator frame 40 fixed connection, and first fixed roll 202 and second fixed roll 212 respectively with first movable roll 201 and second movable roll 211 between the butt and form and to hold the clearance passageway that the protection film passes through to guarantee to carry smooth protection film area 60.

The first movable roller 201 is connected to the elevator frame 40 through an elastic mechanism so as to have a tendency to approach the first fixed roller 202; the second movable roller 211 is connected to the elevating frame 40 through an elastic mechanism so as to have a tendency to approach the second fixed roller 212. The closer the first movable roller 201 is to the first fixed roller 202, the tighter the protective film is clamped, and the relative sliding between the protective film belt 60 and the first fixed roller 202 can be avoided. Similarly, the second movable roller 211 cooperates with the second fixed roller 212 to increase the friction force against the protective film tape 60.

In other preferred embodiments, the displacement sensor 11 is a hole site sensor, and the conveyed protective film is provided with holes sites at equal intervals, so that the hole site sensor can accurately calculate the length of the conveyed protective film by detecting the number of the hole sites on the conveyed protective film, when the hole site sensor detects that the number of the conveyed hole sites reaches the preset number, the hole site sensor sends a stop driving signal to the control module, and the control module directly sends a command for stopping driving the first driving motor 30 and the second driving motor 31 after analysis and processing.

The trigger 10 is installed on a lifting path of the lifting frame 40, and when the trigger 10 detects that the lifting frame 40 descends, the trigger 10 is triggered, and the trigger 10 sends signals for driving the first driving motor 30 and the second driving motor 31 to the control module, and after the signals are processed by the control module, the signals synchronously send commands of driving signals to the first driving motor 30 and the second driving motor 31.

In some specific embodiments, the trigger 10 is a photoelectric sensor, and the photoelectric sensor sends a signal to the control module once when sensing the descending motion of the elevator frame 40, and the control module counts once, and only when the number of times that the photoelectric sensor sends a signal to the control module reaches the preset triggering number of times of the control module, the control module sends a signal for driving the first driving motor 30 and the second driving motor 31, so as to realize film replacement, thereby enabling the protective film to be recycled, and avoiding resource waste.

Example 2:

the present embodiment is different from embodiment 1 in that the elevator frame 40 of the present embodiment includes a first fixing plate 41, a second fixing plate 42, a third fixing plate 43, and a plurality of fixing posts 44.

The first fixing plate 41 is fixedly connected with the third fixing plate 43 through a plurality of fixing columns 44, so as to enclose a space for accommodating the first conveying roller 20; the second fixing plate 42 is fixedly connected to the third fixing plate 43 by a plurality of fixing posts 44 so as to enclose a space for accommodating the second conveying roller 21. This structure can fix the first conveyor roller 20 and the second conveyor roller 21, making the structure thereof more stable.

In addition, protection film fixed length automatic feeding mechanism still includes spacing subassembly (not shown), and spacing subassembly is fixed on lift frame 40, specifically sets up in the transmission route matching department of protection film, and the spacing subassembly that this embodiment provided is U type structure, and during the transmission of protection film area 60, it falls into the U type opening of spacing subassembly just to avoid the left and right skew of protection film, can effectively be restricted in this spacing subassembly, improve the laminating precision of protection film area 60.

The protective film transfer process mentioned in the present embodiment, as shown in the figure, is actually a process in which the first driving motor 30 and the second driving motor 31 respectively drive the first conveying roller 20 and the second conveying roller 21 to provide a rotational force thereto, and the continuous protective film tape 60 is being pulled by the first conveying roller 20 and the second conveying roller 21, and the protective film tape 60 is being conveyed 21 from the film placing wheel 12 to the second conveying roller.

Example 3:

as shown in fig. 1, 2 and 4, in the present embodiment, in addition to the above embodiments, an ultrasonic welding device is further provided, which includes an ultrasonic welding head 70, a welding table 71 and the fixed-length automatic feeding mechanism for the protective film provided in embodiment 1 or 2.

The welding table 71 is fixedly arranged on the base 50; the ultrasonic welding head 70 is arranged on the lifting frame 40 and between the first conveying roller 20 and the second conveying roller 21, and the lifting action of the lifting frame 40 drives the ultrasonic welding head 70 to descend and then to be matched with the welding table 71 to weld a product.

The one side that welding stage 71 and ultrasonic bonding head 70 butt complex is provided with the product fixed slot, and the product fixed slot is used for placing the product of treating the welding, and the product shape of the different product shapes of shape cooperation of product fixed slot is selected, and the fixed product position of treating the welding and the position of putting to ultrasonic bonding head 70 can fall on the welding position of product when the welding accurately.

In summary, the preset number of times of the control module is M, the hole position sensor preset the number of holes of the protective film to be conveyed once is N, and the operation process of the ultrasonic welding device is as follows:

the product fixing groove is provided with a product to be welded in advance, a new protective film is arranged on the transmission channel, the ultrasonic welding head 70 sends a signal of a driving motor to the control module after detecting the action of the lifting frame 40 along with the descending process of the lifting frame 40, and the control module counts once. When the lifting frame 40 descends to the products to be welded, the protective films and the ultrasonic welding head 70 are abutted in sequence, the ultrasonic welding head 70 is in indirect contact with the products through contact with the protective films, the devices send ultrasonic waves to weld the products in the product fixing grooves, after the products are welded, the lifting frame 40 is lifted, the protective films are separated from the products and then fed, and the ultrasonic welding head 70 returns to the initial position along with the lifting frame 40.

And (3) feeding again on the product fixing groove, driving the ultrasonic welding head 70 to descend by the lifting frame 40, sending a signal of a driving motor to the control module again after the photoelectric sensor detects the action of the lifting frame 40, and counting twice by the control module. The lifting frame 40 repeats the welding step M times, so that the preset number M of times of the control module is reached, when the lifting frame 40 returns to the initial position, the control module sends a driving instruction to the first driving motor 30 and the second driving motor 31, the first driving motor 30 and the second driving motor 31 are driven to provide a rotating force transmission protective film for the first conveying roller 20 and the second conveying roller 21, the film placing wheel 12 is prompted to rotate to place the film, until the hole position sensor monitors that the number of the hole positions on the conveyed protective film reaches the preset number N of the hole positions of the hole position sensor, the hole position sensor sends a signal for stopping driving the first driving motor 30 and the second driving motor 31 to the control module, after the processing of the control module, the control module sends an instruction for stopping driving the first driving motor 30 and the second driving motor 31, and the film placing is finished at this moment.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. It is understood that a person skilled in the art may combine the shapes of the components in the embodiments to form a new earphone structure by reading the above embodiments, and still fall within the protection scope of the present patent.

Claims

1. A fixed-length automatic feeding mechanism for a protective film is characterized by comprising a trigger, a film placing wheel, a first driving motor, a first conveying roller, a second conveying roller, a displacement sensor, a lifting rack, a base and a control module;

the lifting frame is fixedly arranged on the base;

the film placing wheel, the second conveying roller and the first conveying roller are sequentially arranged on the lifting frame along the transmission direction of the protective film to form a transmission channel for transmitting the protective film;

the first driving motor is in driving connection with the first conveying roller;

the displacement sensor is arranged on the side of the transmission channel to detect the transmission length of the protective film; the trigger is arranged on a lifting path of the lifting frame to detect the descending action of the lifting frame;

the control module receives signals of the displacement sensor and the trigger and controls the first driving motor according to the signals of the displacement sensor and the trigger so that the protective film can transmit a specific length.

2. A protective film fixed-length automatic feeding mechanism according to claim 1, which comprises a second driving motor, wherein the second driving motor is in driving connection with the second conveying roller.

3. A protective film fixed-length automatic feeding mechanism according to claim 2, wherein the first conveying roller comprises a first movable roller and a first fixed roller; the second conveying roller comprises a second movable roller and a second fixed roller;

first movable roll with the second movable roll all with elevator frame connects, first fixed roll and second fixed roll all with elevator frame fixed connection, just first fixed roll and second fixed roll respectively with butt and formation can hold between first movable roll and the second movable roll the clearance passageway that the protection film passes through.

4. A protective film fixed-length automatic feeding mechanism according to claim 1, wherein the displacement sensor is a hole site sensor, the protective film is provided with holes at equal intervals, and the hole site sensor calculates the length of the protective film to be conveyed by detecting the number of the holes on the protective film to be conveyed.

5. A protective film fixed-length automatic feeding mechanism according to claim 3, wherein the first movable roller is connected to the lifting frame through an elastic mechanism so as to lead the first movable roller to tend to approach the first fixed roller; the second movable roller is connected to the lifting frame through an elastic mechanism, so that the second movable roller tends to approach the second fixed roller.

6. A protective film fixed length automatic feeding mechanism according to claim 1, wherein the trigger is a photoelectric sensor.

7. The protective film fixed-length automatic feeding mechanism according to claim 2, wherein the lifting frame comprises a first fixed plate, a second fixed plate, a third fixed plate and a plurality of fixed columns;

the first fixing plate is fixedly connected with the third fixing plate through a plurality of fixing columns so as to form a space for accommodating the first conveying roller; the second fixed plate is fixedly connected with the third fixed plate through the plurality of fixed columns so as to enclose a space for accommodating the second conveying roller.

8. A protective film fixed-length automatic feeding mechanism according to claim 7, further comprising a limiting assembly, wherein the limiting assembly is fixed on the lifting frame, and the transmission path of the protective film is limited in the limiting assembly.

9. An ultrasonic welding device, which is characterized by comprising an ultrasonic welding head, a welding table and a protective film fixed-length automatic feeding mechanism, wherein the protective film fixed-length automatic feeding mechanism adopts the protective film fixed-length automatic feeding mechanism according to any one of claims 1 to 8;

10. The ultrasonic welding apparatus of claim 9, wherein a product fixing groove is provided on a surface of the welding table that is in abutting engagement with the welding head.