CN210477796U - Film prestretching machine - Google Patents
Film prestretching machine Download PDFInfo
- Publication number
- CN210477796U CN210477796U CN201921008583.7U CN201921008583U CN210477796U CN 210477796 U CN210477796 U CN 210477796U CN 201921008583 U CN201921008583 U CN 201921008583U CN 210477796 U CN210477796 U CN 210477796U
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- Prior art keywords
- stretching
- stretcher
- plastic film
- driving motor
- support frame
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- 239000002985 plastic film Substances 0.000 abstract description 67
- 229920006255 plastic film Polymers 0.000 abstract description 67
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The utility model discloses a film prestretches machine, including at least a set of stretcher, stretcher includes two the stretching unit of mutually supporting: the stretching unit comprises a support frame, a stretching roller which is in running fit with the support frame and a driving motor which drives the stretching roller to rotate, and the rotating speed of an output shaft of the driving motor in the rear stretching unit is greater than that of an output shaft of the driving motor in the front stretching unit; the plastic film is thinned through the stretcher of the utility model, and the plastic film can be conveyed by the stretching roller in the process of thinning the plastic film, so that the plastic film can be stretched while being produced, and the production efficiency of the plastic film is greatly improved; and the utility model discloses a component part of stretcher all is support frame, roller and driving motor commonly used in the plastic film production process, so the utility model discloses a stretcher simple structure and low in production cost.
Description
Technical Field
The utility model relates to a plastic film apparatus for producing's technical field especially relates to a film prestretches machine.
Background
Plastic films are widely used in the fields of life, industry and agriculture, for example, for packaging food and for covering crops to protect crops, because of their high practicability and convenience in use.
In the actual use process, the plastic film has various specifications with different thicknesses according to the use environment of the plastic film, so that the plastic film needs to be stretched by a stretcher in the production process to produce the plastic films with different thicknesses.
The existing stretching machine generally comprises a supporting frame, a heating device for heating the plastic film, a left clamping piece, a right clamping piece and a control guide rail; heating device installs on the support frame and is located plastic film's feed end, and control guide fixed mounting sets up on the support frame and along plastic film's direction of travel, and left clamping piece and right clamping piece are all movable mounting on control guide. During the use, preformed plastic film passes through heating device on the stretcher earlier, soften under heating device's heating, later, pass left clamping piece clamp and fix on right clamping piece, right clamping piece takes plastic film to go forward certain distance to the discharge end, later, left clamping piece presss from both sides the middle part of fixing plastic film, later, right clamping piece continues to move forward to the discharge end, and thin to certain thickness with plastic film drawing, later, left clamping piece and right clamping piece loosen plastic film, plastic film continues to carry to the discharge end, and simultaneously, left clamping piece and right clamping piece resume initial position, in order to stretch next section plastic film.
The observation shows that the existing stretcher has a complex structure and high production cost, and when the left clamping piece and the right clamping piece stretch the plastic film and restore the initial position, the production of the plastic film is stopped, so that the production efficiency of the plastic film is greatly reduced.
In view of this, the present inventors have made extensive conceptions for various defects and inconveniences caused by the incomplete improvement of the structural design of the stretching machine, and have actively studied, improved and tried to develop and design the present invention.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a film prestretching machine that simple structure, low in production cost and can improve plastic film production efficiency.
In order to achieve the above purpose, the solution of the present invention is:
a film pre-stretcher comprises at least one group of stretching units, wherein each stretching unit comprises two mutually matched stretching units: the stretching unit comprises a support frame, a stretching roller and a driving motor, wherein the stretching roller is rotatably matched on the support frame, the driving motor drives the stretching roller to rotate, and the rotating speed of an output shaft of the driving motor in the rear stretching unit is greater than that of an output shaft of the driving motor in the front stretching unit.
The stretching machine comprises more than two groups of stretching units.
The ratio of the rotating speed of the output shaft of the driving motor in the front stretching unit to the rotating speed of the output shaft of the driving motor in the rear stretching unit is 1/3.
The support frame is provided with an adjusting groove, and the stretching roller is movably matched in the adjusting groove.
The adjusting groove in the front stretching unit is arranged at the lower part of the supporting frame, and the adjusting groove in the rear stretching unit is arranged at the upper part of the supporting frame.
The support frame is further provided with a connecting support rod and a lifting connecting rod, one end of the lifting connecting rod is movably matched with the connecting support rod, and the other end of the lifting connecting rod is fixedly connected with the driving motor.
The connecting strut is shaped as a "+" shape.
The stretching machine further comprises a programmable logic controller, and the programmable logic controller is electrically connected with the driving motors in the stretching units and used for controlling the driving motors.
After the scheme is adopted, the plastic film is thinned through the stretcher, and the plastic film can be conveyed by the stretching roller in the process of thinning the plastic film, so that the plastic film can be stretched while being produced, and the production efficiency of the plastic film is greatly improved; and the utility model discloses a component part of stretcher all is support frame, roller and driving motor commonly used in the plastic film production process, so the utility model discloses a stretcher simple structure and low in production cost.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic partial structure diagram of the preferred embodiment of the present invention;
fig. 3 is a schematic structural view of the plastic film production device provided with the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
As shown in fig. 1 to fig. 3, in order to implement the preferred embodiment of the film pre-stretching machine of the present invention, the film pre-stretching machine includes at least one set of stretching units 1, the stretching units 1 include two mutually cooperating stretching units: the stretching device comprises a front stretching unit 1a and a rear stretching unit 1b, wherein the stretching unit comprises a support frame 11, a stretching roller 12 which is in running fit with the support frame 11 and a driving motor 13 which drives the stretching roller 12 to rotate, and the rotating speed of an output shaft of the driving motor 13 in the rear stretching unit 1b is greater than that of an output shaft of the driving motor 13 in the front stretching unit 1 a.
In the present embodiment, the stretching machine includes two stretching units 1, the number of the stretching units 1 may be three, four, or five, and the stretching units 1 are sequentially arranged in parallel. Through being equipped with multiunit stretcher 1, can carry out a lot of elongations to plastic film 100, stretch at every turn only with plastic film 100 draw thin a bit can, finally draw thin to design thickness with plastic film 100 after a lot of elongations, can avoid once directly stretching to design thickness and lead to plastic film 100 to be pulled and split the condition emergence of even breaking through a lot of elongations.
When in use, the plastic film 100 which is just formed passes through the lower end of the stretching roller 12 of the front stretching unit 1a of the first group of stretching units 1, then the plastic film 100 passes through the upper end of the stretching roller 12 of the rear stretching unit 1b of the first group of stretching units 1, then the plastic film 100 sequentially passes through the front stretching unit 1a and the rear stretching unit 1b of the second group of stretching units 1 according to the mode, then the plastic film 100 is connected to the conveying roller group and the winding roller group, and in the continuous production and conveying process of the plastic film 100, a tension degree can be formed between the front stretching unit 1a and the rear stretching unit 1b of each group of stretching units 1, and the tension degree can ensure the production and conveying of the plastic film 100; when the plastic film 100 passes through the stretching unit 1, the rotating speed of the output shaft of the driving motor 13 in the rear stretching unit 1b is set to be greater than the rotating speed of the output shaft of the driving motor 13 in the front stretching unit 1a, so that the rotating speed of the stretching roller 12 of the rear stretching unit 1b in the stretching unit 1 is greater than the rotating speed of the stretching roller 12 of the front stretching unit 1a, the plastic film 100 is dragged by the former stretching roller 12, the plastic film 100 is stretched by the latter stretching roller 12, and the stretching strength of the plastic film 100 is controlled by controlling the speed difference of the two stretching rollers 12, so that the thickness of the plastic film 100 is controlled.
Because the utility model discloses a draw thin to plastic film 100 through stretch roll 12, stretch roll 12 can also carry plastic film 100 in the in-process of drawing thin to plastic film 100, so, can realize drawing while producing plastic film 100, improved plastic film 100's production efficiency greatly; and can be directly with the utility model discloses an output after the stretcher is installed at plastic film 100 shaping, plastic film 100 directly carry to the stretcher in through output back, and at this moment, plastic film 100 still has the residual heat that can supply tensile, so the utility model discloses a stretcher need not set up in addition again and is used for assisting the tensile heating device of plastic film 100, furthermore, the utility model discloses a component part of stretcher all is support frame 11, roller and driving motor 13 commonly used in plastic film 100 production processes, so the utility model discloses a stretcher simple structure and low in production cost.
The ratio of the rotational speed of the output shaft of the drive motor 13 in the front stretching unit 1a to the rotational speed of the output shaft of the drive motor 13 in the rear stretching unit 1b is 1/3. Through a plurality of tests, it is found that the larger the above ratio, i.e. the closer the rotation speeds of the two output shafts are, the lower the stretching effect of the two stretching rollers 12 on the plastic film 100, even without the faradaic plastic film 100, and the smaller the above ratio, i.e. the larger the difference between the rotation speeds of the two output shafts is, the more the two stretching rollers 12 stretch the plastic film 100, which causes the plastic film 100 to be stretch-cracked or even stretch-broken, and by setting the above ratio to 1/3, the two stretching rollers 12 can achieve the optimal stretching effect on the plastic film 100.
The support frame 11 is provided with an adjusting groove 111, and the stretching roller 12 is movably matched in the adjusting groove 111; the adjustment groove 111 in the front tension unit 1a is provided at a lower portion of the support frame 11, and the adjustment groove 111 in the rear tension unit 1b is provided at an upper portion of the support frame 11. Plastic film 100 is in the tensile in-process of stretch roller 12, and its rate of tension is continuously changing always, and the rate of tension of this change influences plastic film 100's tensile quality easily, so, the utility model provides a stretch roller 12 passes through clearance fit in the adjustment tank 111 of support frame 11, can be in tensile in-process, adjusts the distance between two stretch rollers 12 in preceding tensile unit 1a and the back tensile unit 1b to adjust plastic film 100's rate of tension, with the tensile quality of assurance plastic film 100.
The support frame 11 is further provided with a connecting support rod 112 and a lifting connecting rod 113, one end of the lifting connecting rod 113 is movably matched on the connecting support rod 112, and the other end is fixedly connected with the driving motor 13. When in use, the driving motor 13 can move up and down on the connecting support rod 112 through the lifting connecting rod 113 to adjust the position, so as to match the up and down adjustment of the stretching roller 12 in the adjusting groove 111.
The connecting strut 112 has a gamma shape. By setting the connection strut 112 in a gamma shape, an installation space for the driving motor 13 to be installed is formed between the connection strut 112 and the support bracket 11, thereby facilitating the installation of the driving motor 13.
The stretching machine further comprises a programmable logic controller 2, wherein the programmable logic controller 2 is electrically connected with the driving motor 13 in each stretching unit and used for controlling the driving motor 13. By providing the programmable logic controller 2, a user can control the on/off of the driving motor 13 and the rotation speed of the output shaft through the programmable logic controller 2, so as to control the rotation of the stretching roller 12, and the programmable logic controller 2 facilitates the operation and control of the stretcher by the user.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (8)
1. A film pre-stretcher characterized by: including at least a set of stretcher group, stretcher group includes two stretching units of mutually supporting: the stretching unit comprises a support frame, a stretching roller and a driving motor, wherein the stretching roller is rotatably matched on the support frame, the driving motor drives the stretching roller to rotate, and the rotating speed of an output shaft of the driving motor in the rear stretching unit is greater than that of an output shaft of the driving motor in the front stretching unit.
2. A film pre-stretcher as claimed in claim 1 wherein: the stretching machine comprises more than two groups of stretching units.
3. A film pre-stretcher as claimed in claim 1 wherein: the ratio of the rotating speed of the output shaft of the driving motor in the front stretching unit to the rotating speed of the output shaft of the driving motor in the rear stretching unit is 1/3.
4. A film pre-stretcher as claimed in claim 1 wherein: the support frame is provided with an adjusting groove, and the stretching roller is movably matched in the adjusting groove.
5. A film pre-stretcher as claimed in claim 4 wherein: the adjusting groove in the front stretching unit is arranged at the lower part of the supporting frame, and the adjusting groove in the rear stretching unit is arranged at the upper part of the supporting frame.
6. A film pre-stretcher as claimed in claim 4 wherein: the support frame is further provided with a connecting support rod and a lifting connecting rod, one end of the lifting connecting rod is movably matched with the connecting support rod, and the other end of the lifting connecting rod is fixedly connected with the driving motor.
7. A film pre-stretcher as claimed in claim 6 wherein: the connecting strut is shaped as a "+" shape.
8. A film pre-stretcher as claimed in claim 1 wherein: the stretching machine further comprises a programmable logic controller, and the programmable logic controller is electrically connected with the driving motors in the stretching units and used for controlling the driving motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921008583.7U CN210477796U (en) | 2019-07-01 | 2019-07-01 | Film prestretching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921008583.7U CN210477796U (en) | 2019-07-01 | 2019-07-01 | Film prestretching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210477796U true CN210477796U (en) | 2020-05-08 |
Family
ID=70529160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921008583.7U Active CN210477796U (en) | 2019-07-01 | 2019-07-01 | Film prestretching machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210477796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253872A (en) * | 2019-07-01 | 2019-09-20 | 厦门聚富塑胶制品有限公司 | A kind of film pre-stretching machine |
-
2019
- 2019-07-01 CN CN201921008583.7U patent/CN210477796U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253872A (en) * | 2019-07-01 | 2019-09-20 | 厦门聚富塑胶制品有限公司 | A kind of film pre-stretching machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A film pre stretching machine Effective date of registration: 20220708 Granted publication date: 20200508 Pledgee: Bank of China Limited Xiamen Jimei sub branch Pledgor: XIAMEN JUFU PLASTIC PRODUCTS Co.,Ltd. Registration number: Y2022980010085 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200508 Pledgee: Bank of China Limited Xiamen Jimei sub branch Pledgor: XIAMEN JUFU PLASTIC PRODUCTS Co.,Ltd. Registration number: Y2022980010085 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A thin film pre stretching machine Granted publication date: 20200508 Pledgee: Bank of China Limited Xiamen Jimei sub branch Pledgor: XIAMEN JUFU PLASTIC PRODUCTS Co.,Ltd. Registration number: Y2024980020308 |