CN211664390U

CN211664390U - Film cutting device

Info

Publication number: CN211664390U
Application number: CN202020223608.1U
Authority: CN
Inventors: 史卫梅
Original assignee: Chengdu Polytechnic
Current assignee: Chengdu Polytechnic
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-10-13
Anticipated expiration: 2030-02-28

Abstract

The utility model relates to the technical field of film production equipment, in particular to a film cutting device, which comprises a cutting table, wherein a fixed plate and a motor are arranged on the cutting table, a mounting plate is vertically and slidably connected onto the fixed plate, a cylinder body, a first elastic piece and a second elastic piece are arranged on the mounting plate, the second elastic piece is connected with a pre-pressing plate for compressing a film, a sliding block is transversely and slidably connected onto the mounting plate, a cutting knife for cutting the film is arranged on the sliding block, and a through groove for the cutting knife to move is arranged on the pre-pressing plate; a piston is connected inside the cylinder body in a sliding manner, the piston is connected with a piston rod, the piston rod is connected with a sliding block, two ends of the cylinder body are respectively communicated with a first hose and a second hose, and the end parts of the first hose and the second hose are connected to two sides of the cutting knife; the output end of the motor is connected with a lead screw of the ball screw pair, and a nut of the ball screw pair is connected with the sliding block in a vertical sliding mode. The utility model discloses in, can produce the air current when the cutting film, avoid the film to glue the sword.

Description

Film cutting device

Technical Field

The utility model relates to a film production facility technical field specifically discloses a film cutting device.

Background

At present, plastic films are widely applied to packaging in the fields of food, medicine, chemical industry and the like, wherein the proportion of food packaging is the largest, such as beverage packaging, quick-frozen food packaging, fast food packaging and the like, and the products bring great convenience to the life of people. In the production and processing of plastic films, large plastic films need to be cut into small plastic films, so that plastic packaging bags of various specifications can be produced. However, in the cutting process of the plastic film, the plastic film is soft, so that the plastic film is easy to stick to a knife after being stretched during cutting, the plastic film is torn, and waste of the plastic film is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a film cutting device to easily glue the problem of sword when solving the plastic film cutting.

In order to achieve the above purpose, the utility model discloses a scheme does: the film cutting device comprises a cutting table, wherein a fixed plate and a motor are fixedly mounted on the cutting table, a mounting plate is vertically connected onto the fixed plate in a sliding manner, a cylinder body, a plurality of first elastic pieces and second elastic pieces are fixedly connected onto the bottom surface of the mounting plate, the bottom ends of the first elastic pieces are fixedly connected with the upper surface of the cutting table, a prepressing plate is fixedly connected onto the bottom end of the second elastic piece, a sliding block is transversely connected onto the bottom surface of the mounting plate in a sliding manner, a cutting knife for cutting a film is fixedly connected onto the bottom end of the sliding block, the prepressing plate is located below the cutting knife, and a through groove for; the interior of the cylinder body is connected with a piston in a sliding mode, the piston divides the cylinder body into a front cavity and a rear cavity which are independent, the front cavity is communicated with a first hose, the rear cavity is communicated with a second hose, one ends, far away from the cylinder body, of the first hose and the second hose are fixedly connected to two sides of the cutting knife, the piston is fixedly connected with a piston rod, and one end, far away from the piston, of the piston is fixedly connected with the sliding block; the output end of the motor is coaxially and fixedly connected with a lead screw of a ball screw pair, and a nut of the ball screw pair is vertically and slidably connected with the sliding block.

The working principle and the beneficial effects of the scheme are as follows: in this scheme, press the mounting panel, the mounting panel is close to the cutting bed, the pre-pressing board compresses tightly the film on the cutting bed, this in-process is because vice nut of ball and the vertical sliding connection of sliding block, therefore, the sliding block can move on vertical smoothly, it rotates to recycle the vice lead screw of motor drive ball, make vice nut of ball drive the sliding block and slide on the mounting panel, thereby realize cutting knife cutting film, and in cutting knife cutting film, take place to slide with sliding block fixed connection's piston, the volume of preceding cavity and back cavity changes, the one end that the cylinder body was kept away from to first hose and second hose produces the air current, blow or inhale the film, avoid the film to glue the sword, thereby avoid the film to tear because of gluing the sword. Moreover, in the scheme, the prepressing plate compresses the film in advance before the film is cut, so that the phenomenon that the cutting quality is influenced due to the fact that the film moves during cutting can be avoided.

Optionally, a tool withdrawal groove for moving the cutting tool is formed in the cutting table.

The cutting knife can get into the tool withdrawal groove, and the cutting knife is prevented from contacting with the cutting table and making sound. And, at the in-process of cutting the film, can constantly press the mounting panel for the mounting panel shakes from top to bottom, thereby realizes reciprocating of cutting knife, exerts vertical cutting force to the film, and then, under the combined action of vertical cutting force and horizontal cutting force, the cutting knife cuts the film more easily.

Optionally, the upper surface of the prepressing plate is fixedly connected with a supporting rod, a press switch used for controlling the motor is fixedly mounted on the bottom surface of the mounting plate, and the press switch is located above the supporting rod.

After the prepressing plate compresses the thin film on the cutting table, the mounting plate continues to approach the cutting table, the top end of the supporting rod is contacted with the pressing switch and applies acting force to the pressing switch, the pressing switch is closed, the motor is started, the sliding block automatically starts to slide, namely, the thin film is automatically cut, the automation degree of the device is improved, and manual operation is reduced.

Optionally, the branch includes interior pole and outer pole, and the cavity has been seted up to the inside of outer pole, and the top end opening of cavity, interior vertical sliding connection of pole in the cavity, the bottom fixedly connected with third elastic component of interior pole, the bottom of third elastic component and the diapire fixed connection of cavity.

Interior vertical sliding connection of pole is in the cavity of outer pole, and fixedly connected with third elastic component between the diapire of the bottom of interior pole and cavity, consequently, interior pole is exerted effort to the push type switch and is made the closed back of push type switch, and the mounting panel can also be close to the cutting bed to realize reciprocating of cutting knife, do not influence the lateral shifting of cutting knife simultaneously, in then, under the combined action of vertical cutting power and horizontal cutting power, the cutting knife cuts the film more easily.

Optionally, a first guide roller and a fourth guide roller are arranged beside the cutting table, the first guide roller and the fourth guide roller are respectively located on two sides of the cutting table, and the bottom ends of the first guide roller and the fourth guide roller are flush with the upper surface of the cutting table.

When the feeding direction and the discharging direction of the film are higher than the height of the cutting table, the first guide roller and the fourth guide roller are arranged, so that the film and the upper surface of the cutting table can keep the same height, and the prepressing plate can be used for pressing the film.

Optionally, a second guide roller and a third guide roller are arranged beside the cutting table, the second guide roller and the third guide roller are respectively located on two sides of the cutting table, and the top ends of the second guide roller and the third guide roller are flush with the upper surface of the cutting table.

When the feeding direction and the discharging direction of the film are lower than the height of the cutting table, the second guide roller and the third guide roller are arranged, so that the film and the upper surface of the cutting table can keep the same height, and the prepressing plate can be used for pressing the film.

Optionally, one end of the piston rod, which is far away from the piston, passes through the rear side wall of the rear chamber to be fixedly connected with the sliding block, and the piston is close to the front side wall of the front chamber.

Thus, at the beginning, most of the piston rod is positioned in the rear cavity, and the slidable distance of the piston is larger, so that the cylinder body can generate air flow in the whole process of cutting the film by the cutting knife.

Optionally, one side of the nut facing the sliding block is fixedly connected with a sliding block, and one side of the sliding block facing the nut is provided with a vertical sliding groove for sliding the sliding block.

The sliding fit of slider and vertical spout realizes the vertical sliding connection of nut and sliding block.

Optionally, the upper surface of the pre-pressing plate is fixedly connected with a limiting rod, and the mounting plate is provided with a limiting hole for the limiting plate to pass through.

And the prepressing plate is ensured to move only in the vertical direction through the limiting rod and the limiting hole.

Optionally, a rubber layer is fixedly connected to the bottom surface of the pre-pressing plate.

The rubber layer has good elasticity and can protect the film when the film is pressed.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of the film cutting apparatus of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of a second embodiment of the film cutting apparatus of the present invention;

FIG. 4 is a longitudinal cross-sectional view of the bar of the second embodiment.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the cutting table comprises a cutting table 1, a motor 2, a fixing plate 3, a mounting plate 4, a cylinder 5, a piston 510, a front chamber 520, a rear chamber 530, a piston rod 540, a first elastic piece 6, a second elastic piece 7, a prepressing plate 8, a sliding block 9, a T-shaped sliding block 10, a cutting knife 11, a through groove 12, a tool withdrawal groove 13, a limiting rod 14, a rubber layer 15, a first hose 16, a second hose 17, a lead screw 18, a nut 19, a sliding block 20, a first guide roller 21, a second guide roller 22, a third guide roller 23, a fourth guide roller 24, a support rod 25, an inner rod 251, an outer rod 252, a third elastic piece 26 and a push switch 27.

Example one

This embodiment is substantially as shown in fig. 1 and 2: film cutting device, including cutting bed 1, fixed mounting has motor 2 and four fixed plates 3 on cutting bed 1, and vertical sliding connection has mounting panel 4 on the fixed plate 3, specifically, integrated into one piece has the draw runner on the mounting panel 4, has seted up on the fixed plate 3 and has supplied the gliding vertical spout of draw runner to mounting panel 4 slides on vertical.

The bottom surface of the mounting plate 4 is fixedly connected with a cylinder body 5, a plurality of first elastic members 6 and second elastic members 7, in this embodiment, the number of the first elastic members 6 and the second elastic members 7 is four, and the first elastic members 6 and the second elastic members 7 are all springs. The bottom end of the first elastic member 6 is fixedly connected with the upper surface of the cutting table 1, and the bottom end of the second elastic member 7 is fixedly connected with a prepressing plate 8.

The bottom surface of mounting panel 4 transversely sliding connection has sliding block 9, specifically, the top fixedly connected with T type slider 10 of sliding block 9, and the gliding T type spout that supplies T type slider 10 is seted up to the bottom surface of mounting panel 4. The bottom fixedly connected with of sliding block 9 is used for cutting the cutting knife 11 of film, and pre-pressing plate 8 is located the below of cutting knife 11, and sets up on pre-pressing plate 8 and supplies cutting knife 11 to remove to lead to groove 12, sets up the tool withdrawal groove 13 that supplies cutting knife 11 to remove on the cutting bed 1. The upper surface of the prepressing plate 8 is fixedly connected with a limiting rod 14, and the mounting plate 4 is provided with a limiting hole for the limiting rod 14 to pass through, so that the prepressing plate 8 is limited to move only in the vertical direction. A rubber layer 15 is fixedly attached to the bottom surface of the pre-press plate 8 to protect the membrane while compressing it.

The inside sliding connection of cylinder body 5 has piston 510, piston 510 separates cylinder body 5 for independent preceding cavity 520 and back cavity 530, preceding cavity 520 intercommunication has first hose 16, back cavity 530 intercommunication has second hose 17, the one end that cylinder body 5 was kept away from to first hose 16 and second hose 17 has cup jointed the protection tube, the tip of protection first hose 16 and second hose 17 does not receive the damage of cutting knife 11, two protection tubes are fixed connection respectively in the both sides of cutting knife 11. In this embodiment, the port of the first hose 16 is located on the right side of the cutting blade 11, and the port of the second hose 17 is located on the left side of the cutting blade 11. The piston 510 is fixedly connected with a piston rod 540, one end of the piston 510 far away from the piston 510 passes through the rear side wall of the rear chamber 530 and is fixedly connected with the sliding block 9, and the piston 510 is close to the front side wall of the front chamber 520, so that sufficient sliding distance is reserved for the piston 510.

The coaxial fixedly connected with ball of output 18 of motor 2 is vice, and ball is vice nut 19 and the vertical sliding connection of sliding block 9, specifically, nut 19's right side fixedly connected with slider 20, and the left side wall of sliding block 9 has seted up and has supplied the gliding vertical spout of slider 20. In this embodiment, the motor 2 is a stepping motor capable of rotating forward and backward.

The left side of the cutting table 1 is provided with a first guide roller 21 and a second guide roller 22, the right side of the cutting table 1 is provided with a third guide roller 23 and a fourth guide roller 24, the bottom ends of the first guide roller 21 and the fourth guide roller 24 are flush with the upper surface of the cutting table 1, and the top ends of the second guide roller 22 and the third guide roller 23 are flush with the upper surface of the cutting table 1.

The specific implementation process is as follows: first, the film to be cut is passed through the first guide roller 21 and the second guide roller 22, and then the film is passed through the third guide roller 23 and the fourth guide roller 24 so that the film is flatly attached to the cutting table 1. Then, the worker manually presses the mounting plate 4 downward, so that the mounting plate 4 moves downward, and then the prepressing plate 8, the sliding block 9 and the cylinder 5 all move downward, and in the process, since the nut 19 of the ball screw pair is vertically slidably connected with the sliding block 9, the nut 19 does not affect the vertical movement of the sliding block 9.

After the prepressing plate 8 compresses the film, the worker continues to press the mounting plate 4 downwards until the cutting knife 11 passes through the through groove 12 of the prepressing plate 8 and enters the tool withdrawal groove 13 on the cutting table 1, then the motor 2 is started, the motor 2 drives the lead screw 18 of the ball screw pair to rotate clockwise, and then the nut 19 drives the sliding block 9 to slide backwards to cut the film. Meanwhile, because the piston rod 540 is fixedly connected with the sliding block 9, the piston rod 540 drives the piston 510 to slide backwards (to slide towards the direction of the rear chamber 530), then, the volume of the rear chamber 530 is reduced, the internal pressure is increased, the volume of the front chamber 520 is increased, the internal pressure is reduced, the second hose 17 communicated with the rear chamber 530 blows out air flow, the first hose 16 communicated with the front chamber 520 sucks in air flow, and because the first hose 16 is positioned at the right side of the cutting knife 11, the second hose 17 is positioned at the left side of the cutting knife 11, therefore, negative pressure is formed at the right side of the cutting knife 11, positive pressure is formed at the left side of the cutting knife 11, films at the left side and the right side of the cutting knife 11 are separated from the cutting knife 11 after being cut under the action of air flow, the film sticking is avoided, and the film is.

In addition, at the in-process of cutting knife 11 cutting film, the workman can press mounting panel 4 repeatedly for mounting panel 4 constantly reciprocates, thereby drive sliding block 9 and cutting knife 11 constantly reciprocate, what need notice this moment, the in-process that cutting knife 11 reciprocated must not leave tool escape groove 13, and like this, cutting knife 11 just can not only apply horizontal cutting force to the film, can also apply vertical cutting force to the film, and it is easier to cut the film, and is more high-efficient.

After the film cutting is finished, a worker does not press the mounting plate 4 any more, the mounting plate 4 moves upwards under the action of the first elastic piece 6 to reset, meanwhile, the sliding block 9, the cutting knife 11 and the cylinder body 5 all move upwards to reset, finally, the prepressing plate 8 moves upwards, the film is not compressed, and the cut film is taken down.

Example two

The difference between the present embodiment and the first embodiment is: as shown in fig. 3 and 4, a support rod 25 is fixedly connected to the upper surface of the pre-pressing plate 8, the support rod 25 includes an inner rod 251 and an outer rod 252, a cavity is formed inside the outer rod 252, the top end of the cavity is open, the inner rod 251 is vertically slidably connected in the cavity, the bottom end of the inner rod 251 is fixedly connected with a third elastic member 26, the bottom end of the third elastic member 26 is fixedly connected with the bottom wall of the cavity, and in this embodiment, the third elastic member 26 is a spring. A push switch 27 for controlling the motor 2 is fixedly mounted on the bottom surface of the mounting plate 4, and the push switch 27 is positioned above the inner rod 251. The distance between the top end of the inner rod 251 and the push switch 27 is smaller than the distance between the bottom end of the cutting knife 11 and the bottom wall of the tool withdrawal groove 13 and larger than the distance between the bottom end of the cutting knife 11 and the top end of the tool withdrawal groove 13.

In this embodiment, after the pre-pressing plate 8 compresses the film, the worker continues to press the mounting plate 4, the cutting knife 11 penetrates through the through groove 12 of the pre-pressing plate 8 and enters the tool withdrawal groove 13 on the cutting table 1, the top end of the inner rod 251 contacts with the push type switch 27, and along with the downward movement of the cutting knife 11, the top end of the inner rod 251 applies an acting force to the push type switch 27, so that the push type switch 27 is closed, the motor 2 is automatically started, the worker does not need to manually start the motor 2, and the operation of the worker is reduced.

In addition, after the film is cut, in the process that the mounting plate 4 is reset upwards, the top end of the inner rod 251 is separated from the pressing switch 27, the pressing switch 27 is disconnected, the motor 2 is automatically closed, the motor 2 does not need to be manually closed by a worker, the operation of the worker is reduced, and the automation degree of the device is improved.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention.

Claims

1. Film cutting device, including the cutting bed, its characterized in that: the cutting table is fixedly provided with a fixed plate and a motor, the fixed plate is vertically connected with a mounting plate in a sliding manner, the bottom surface of the mounting plate is fixedly connected with a cylinder body, a plurality of first elastic pieces and second elastic pieces, the bottom end of each first elastic piece is fixedly connected with the upper surface of the cutting table, the bottom end of each second elastic piece is fixedly connected with a prepressing plate, the bottom surface of the mounting plate is transversely connected with a sliding block in a sliding manner, the bottom end of each sliding block is fixedly connected with a cutting knife for cutting a thin film, the prepressing plate is positioned below the cutting knife, and the prepressing plate is provided; the interior of the cylinder body is connected with a piston in a sliding mode, the piston divides the cylinder body into a front cavity and a rear cavity which are independent, the front cavity is communicated with a first hose, the rear cavity is communicated with a second hose, one ends, far away from the cylinder body, of the first hose and the second hose are fixedly connected to two sides of the cutting knife, the piston is fixedly connected with a piston rod, and one end, far away from the piston, of the piston is fixedly connected with the sliding block; the output end of the motor is coaxially and fixedly connected with a lead screw of a ball screw pair, and a nut of the ball screw pair is vertically and slidably connected with the sliding block.

2. The film cutting apparatus according to claim 1, wherein: and a tool withdrawal groove for the cutting knife to move is formed in the cutting table.

3. The film cutting apparatus according to claim 2, wherein: the upper surface of pre-pressing plate is fixedly connected with a supporting rod, the bottom surface of the mounting plate is fixedly provided with a push type switch used for controlling the motor, and the push type switch is located above the supporting rod.

4. The film cutting apparatus according to claim 3, wherein: the branch includes interior pole and outer pole, and the cavity has been seted up to the inside of outer pole, and the top end opening of cavity, interior vertical sliding connection of pole in the cavity, the bottom fixedly connected with third elastic component of interior pole, the bottom of third elastic component and the diapire fixed connection of cavity.

5. The film cutting apparatus according to any one of claims 1 to 4, wherein: the cutting table is provided with a first guide roller and a fourth guide roller beside the cutting table, the first guide roller and the fourth guide roller are respectively positioned on two sides of the cutting table, and the bottom ends of the first guide roller and the fourth guide roller are flush with the upper surface of the cutting table.

6. The film cutting apparatus according to claim 5, wherein: and a second guide roller and a third guide roller are arranged beside the cutting table, the second guide roller and the third guide roller are respectively positioned at two sides of the cutting table, and the top ends of the second guide roller and the third guide roller are flush with the upper surface of the cutting table.

7. The film cutting apparatus according to claim 1, wherein: one end of the piston rod, which is far away from the piston, penetrates through the rear side wall of the rear cavity and is fixedly connected with the sliding block, and the piston is close to the front side wall of the front cavity.

8. The film cutting apparatus according to claim 1, wherein: the nut is towards one side fixedly connected with slider of sliding block, and the gliding vertical spout that supplies the slider is seted up towards one side of nut to the sliding block.

9. The film cutting apparatus according to claim 3, wherein: the upper surface of the prepressing plate is fixedly connected with a limiting rod, and the mounting plate is provided with a limiting hole for the limiting plate to pass through.

10. The film cutting apparatus according to claim 1, wherein: and a rubber layer is fixedly connected to the bottom surface of the prepressing plate.