Longitudinal stretching machine for PI (Polyimide) film
By introducing a heat transfer oil recovery mechanism into the PI film longitudinal stretching machine, the problem of heat transfer oil leakage and film contamination is solved, and timely recovery of heat transfer oil and environmental cleaning are achieved.
Patent Information
- Application Number
- CN202422717680.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-06
AI Technical Summary
During the longitudinal stretching process of existing PI film longitudinal stretching machines, heat transfer oil easily leaks and contaminates the film and the environment.
A PI film longitudinal stretching machine was designed, which adopted a thermal oil recovery mechanism, including an arc plate, a receiving bar and a guide pipe, to collect the leaked thermal oil. The scraper was used to scrape off the residual glue on the edge of the film to prevent the thermal oil from contaminating the film and the environment.
The timely recovery of heat transfer oil is achieved, the pollution of film and environment is reduced, and the cleanliness of the production process is improved.
Smart Images
Figure CN223466697U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of film production technology, more particularly to a PI film longitudinal stretching machine. BACKGROUND
[0002] PI film needs to be stretched longitudinally in production, and a film longitudinal stretching machine needs to be used. At present, the longitudinal stretching machine of this kind of production line generally adopts the form of tension roller, and the speed matching between the longitudinal stretching machine and the transverse stretching machine is controlled through the feedback of the tension sensor. The film needs to be heated while being stretched, and the heat conducting oil needs to be injected into the roller through the connecting pipe, so that the heat can be quickly transferred to the surface of the film, so that the whole film is uniformly and stably heated to meet the requirements of film stretching and heating in the production process. However, when the film is stretched longitudinally, the roller rotates with the stretching of the film, which can easily cause the interface between the roller and the connecting pipe to leak oil. The leaked heat conducting oil will cover the outer circumferential wall of the roller, and finally cause the film to be contaminated. Therefore, the existing technology has the problem that the leaked heat conducting oil can easily contaminate the film. SUMMARY
[0003] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a PI film longitudinal stretching machine, which solves the problem that the leaked heat conducting oil can easily contaminate the film in the prior art.
[0004] The purpose of the utility model can be realized through the following technical solutions:
[0005] A PI film longitudinal stretching machine, comprising a machine body, a plurality of horizontally placed rollers are rotatably connected to the machine body, and a connecting pipe is connected to one end of each roller;
[0006] A heat conducting oil recovery mechanism is arranged at the lower end of each roller, the heat conducting oil recovery mechanism comprises a bottom plate, a support plate is arranged vertically above the bottom plate, an adjusting unit is arranged on the bottom plate and connected to the support plate, the adjusting unit is used for driving the support plate to move up and down, a vertical rod is fixed to the support plate, a semicircular arc plate is fixed to the vertical upper end, the upper end of the arc plate is matched with the circumferential wall of the corresponding roller, a semicircular arc-shaped receiving strip is fixed to one end of the arc plate close to the connecting pipe along the axis direction of the roller, the arc plate and the receiving strip are coaxially arranged, and a gap is left between the upper end of the receiving strip and the circumferential wall of the corresponding roller, a through groove is formed at the lower end of the receiving strip, a vertical downward flow guide pipe is fixed to the circumferential wall of the through groove, and an open-topped recovery bin is arranged at the upper end of the support plate.
[0007] The above technical solution has the following principles and effects:
[0008] When the roller leaks oil with the connecting pipe, the heat conducting oil flows along the roller surface to the bottom of the roller, and is prevented from sliding along the roller axis by the blocking of the arc plate, so that the heat conducting oil drops to the receiving strip, and finally drops along the receiving strip and the flow guide pipe into the recovery bin, so that the leaked heat conducting oil during the vertical pulling process is recovered in time, and the leaked heat conducting oil is prevented from polluting the film and the external environment.
[0009] The arc plate is fixed with a scraper at the end away from the receiving strip, the upper end of the scraper is attached to the lower end of the corresponding roller, and a recovery box with an open upper end is arranged below the scraper, and the recovery box is fixed on the support plate.
[0010] A pair of symmetrical ear plates are fixed on the side wall of the lower end of the flow guide pipe, and the ear plates are detachably connected with the recovery bin.
[0011] The adjusting unit comprises a vertically placed threaded column, the upper end of the threaded column is fixed with the support plate, the lower end of the threaded column is sleeved with a first threaded sleeve connected by threads, the lower end of the first threaded sleeve is fixedly sleeved with a limiting ring, a groove is formed in the bottom plate, an annular groove is formed in the inner side wall of the groove, the lower end of the first threaded sleeve is rotatably connected in the groove, and the limiting ring is rotatably connected in the annular groove.
[0012] A threaded groove is formed in the outer side wall of the first threaded sleeve close to the lower end, a second threaded sleeve is sleeved on the first threaded sleeve and connected with the threaded groove by threads, a plurality of protrusions are fixed on the outer side wall of the second threaded sleeve, a circular ring pressing plate is fixedly connected to the lower end of the second threaded sleeve, and the circular ring pressing plate is sleeved on the outer side of the threaded column.
[0013] A pair of symmetrical support strips are fixed on the inner side wall of the recovery bin, a filter plate is placed between the two support strips, and the upper end surface of the filter plate is inclined.
[0014] A recovery pipe is fixedly connected to the bottom of the recovery bin, and the recovery pipe is connected with the inside of the recovery bin.
[0015] Self-locking rollers are fixedly installed at the bottom of the bottom plate.
[0016] The nouns, conjunctions or adjectives involved in the above technical solutions are explained as follows:
[0017] Fixed connection: refers to the process of connecting two separate profiles or parts into a complex part or component by using screws, bolts and rivets.
[0018] Threaded connection: refers to the connection and fixation between objects through the mutual engagement of threads.
[0019] The beneficial effects of the utility model are as follows:
[0020] 1、When the roller and the connecting pipe leak oil, the heat conducting oil flows along the roller surface to the bottom of the roller, and is prevented from sliding along the roller axis by the blocking of the arc plate, so that the heat conducting oil drips onto the receiving strip and finally drips along the receiving strip and the flow guide pipe into the recovery bin, achieving the purpose of timely recovery of the leaked heat conducting oil at the roller and the connecting pipe, and avoiding pollution of the film and the external environment by the leaked heat conducting oil during the vertical pulling process;
[0021] 2、When the rotating roller rotates, the scraper can scrape off the residual glue at the edge of the film on the roller surface, and the scraped off residual glue falls into the recovery box for recovery, further reducing the pollution of the working environment;
[0022] 3、The telescopic rod is used for directional positioning of the supporting plate, the first threaded sleeve is rotated by holding the two handle rods, the threaded column is driven to move up and down in a threaded manner, and after the arc plate is lifted to the required position, the second threaded sleeve is rotated by holding the convex block, the second threaded sleeve is spirally moved downward, the lower end of the circular ring pressing plate abuts against the upper end of the bottom plate, and accidental rotation of the first threaded sleeve is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.
[0024] Figure 1 is the overall structure schematic diagram of the present application;
[0025] Figure 2 is the arc plate part structure schematic diagram of the present application;
[0026] Figure 3 is the supporting plate part structure disassembly schematic diagram of the present application;
[0027] Figure 4 is the Figure 3 schematic diagram of the local enlarged structure of A in the present application. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort are within the scope of protection of the present application.
[0029] Combined with this Figures 1 to 4 To describe an embodiment of a PI film longitudinal stretching machine. Specifically, the PI film longitudinal stretching machine is constructed as a split structure, which has components such as rollers 28, connecting pipes 29, bottom plates 18, support plates 11, vertical rods 13, arc plates 2, connecting bars 3, guide pipes 4 and recovery bins 7. When oil leaks from the rollers 28 and the connecting pipes 29, the heat transfer oil flows along the surface of the rollers 28 to the bottom of the rollers 28, and is blocked by the arc plates 2 to prevent the heat transfer oil from sliding axially along the rollers 28, causing the heat transfer oil to drip onto the connecting bar 3, and finally drip into the recovery bin 7 along the connecting bar 3 and guide pipe 4, thereby achieving the purpose of timely recovery of the heat transfer oil leaked from the rollers 28 and the connecting pipes 29, and preventing the heat transfer oil leaked during the longitudinal stretching process from contaminating the film and the external environment.
[0030] Please refer to Figures 1 to 4 A PI film longitudinal stretching machine includes a machine body 1, a plurality of horizontally placed rollers 28 are rotatably connected to the machine body 1, and one end of each roller 28 is connected to a connecting pipe 29;
[0031] The lower end of any roller 28 is provided with a heat-conducting oil recovery mechanism, which includes a bottom plate 18, a support plate 11 is provided just above the bottom plate 18, and an adjustment unit connected to the support plate 11 is provided on the bottom plate 18 for driving the support plate 11 to move up and down. A vertical rod 13 is fixed on the support plate 11, and a semicircular arc plate 2 is fixed on the vertical upper end. The upper arc surface of the arc plate 2 is in contact with the circumferential wall of the lower end of the corresponding roller 28. The arc plate 2 is fixed with a semicircular arc-shaped receiving bar 3 at one end near the connecting pipe 29 along the axis direction of the roller 28. The arc plate 2 and the receiving bar 3 are coaxially placed, and a gap is left between the upper arc surface of the receiving bar 3 and the circumferential wall of the lower end of the corresponding roller 28. A through groove is opened at the lower end of the receiving bar 3, and a guide pipe 4 placed vertically downward is fixed on the circumferential wall of the through groove. A recovery bin 7 with an open upper end is placed on the upper end of the support plate 11, and the recovery bin 7 is located just below the corresponding guide pipe 4;
[0032] During use, the heat transfer oil recovery mechanism is first moved to the interface between the corresponding roller 28 and the connecting pipe 29, and then the support plate 11 is driven upward by the adjustment unit to make the arc surface of the upper end of the arc plate 2 fit with the lower end surface of the corresponding roller 28. When the roller 28 and the connecting pipe 29 leak oil, the heat transfer oil flows along the surface of the roller 28 to the bottom of the roller 28, and passes through the baffle of the arc plate 2 to prevent the heat transfer oil from sliding axially along the roller 28, so that the heat transfer oil drips onto the receiving bar 3, and finally drips into the recovery bin 7 along the receiving bar 3 and the guide pipe 4, thereby achieving the purpose of timely recovery of the heat transfer oil leaked from the roller 28 and the connecting pipe 29, and preventing the heat transfer oil leaked during the longitudinal pulling process from contaminating the film and the external environment.
[0033] The arc plate 2 is fixed with a scraper 14 at the end away from the receiving strip 3, the upper end of the scraper 14 is in close contact with the lower end of the corresponding roller 28, and the scraper 14 is provided below with a recycling box 12 with an open upper end, which is fixed on the support plate 11; when the rotating roller 28 rotates, the scraper 14 can scrape off the residual glue at the edge of the film on the surface of the roller 28, and the scraped off residual glue falls into the recycling box 12 for recycling, further reducing the pollution of the working environment.
[0034] A pair of symmetrical ear plates 5 are fixed on the side wall of the lower end of the flow guide pipe 4, and the ear plates 5 are detachably connected with the recycling bin 7; preferably, the ear plates 5 are threadedly connected with the recycling bin 7 through bolts 6, so as to control the synchronous movement of the recycling bin 7 and the flow guide pipe 4, and avoid the dislocation of the flow guide pipe 4 and the recycling bin 7.
[0035] The adjusting unit comprises a vertically placed threaded column 15, the upper end of the threaded column 15 is fixed with the support plate 11, the lower end of the threaded column 15 is provided with a threadedly connected first threaded sleeve 16, the lower end of the first threaded sleeve 16 is fixedly provided with a limiting ring 17, a recess 19 is formed in the bottom plate 18, an annular groove 20 is formed in the inner side wall of the recess 19, the lower end of the first threaded sleeve 16 is rotationally connected in the recess 19, and the limiting ring 17 is rotationally connected in the annular groove 20; a pair of symmetrical handle rods 25 are fixed on the outer side wall of the first threaded sleeve 16, a pair of vertically placed telescopic rods 26 are fixed on the bottom plate 18, and the upper ends of the telescopic rods 26 are fixed with the support plate 11; the support plate 11 is directionally limited by the telescopic rods 26, the first threaded sleeve 16 is rotated by holding the two handle rods 25, and the threaded column 15 is driven to move up and down by threads.
[0036] A threaded groove 22 is formed in the outer side wall of the first threaded sleeve 16 close to the lower end, a second threaded sleeve 23 is sleeved on the first threaded sleeve 16 and threadedly connected with the threaded groove 22, a plurality of protrusions 27 are fixed on the outer side wall of the second threaded sleeve 23, a circular ring pressing plate 24 is fixedly connected to the lower end of the second threaded sleeve 23, and the circular ring pressing plate 24 is sleeved on the outer side of the threaded column 15; preferably, an elastic rubber pad is fixed on the bottom of the circular ring pressing plate 24, or anti-skid lines are formed on the bottom of the circular ring pressing plate, the second threaded sleeve 23 is rotated by holding the protrusions 27, the second threaded sleeve 23 is spirally moved downward, the lower end of the circular ring pressing plate 24 is abutted on the upper end of the bottom plate 18, and the first threaded sleeve 16 is prevented from being accidentally rotated.
[0037] A pair of symmetrical support strips 8 are fixed on the inner side wall of the recycling bin 7, a filter plate 9 is placed between the two support strips 8, and the upper end surface of the filter plate 9 is in an inclined placement state; so as to filter the dropped heat conducting oil.
[0038] A recycling pipe 10 is fixedly connected to the bottom of the recycling bin 7 and is in through connection with the inside of the recycling bin 7; preferably, a valve is arranged on the recycling pipe 10, and the heat conducting oil in the recycling bin 7 is discharged by opening the valve.
[0039] The bottom four corners of the bottom plate 18 are fixedly installed with self-locking rollers 21, so as to facilitate position adjustment of the heat conducting oil recovery mechanism.
[0040] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0041] The basic principles, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.
Claims
1. A PI film longitudinal stretching machine, comprising a machine body (1), a plurality of horizontally placed rollers (28) are rotatably connected on the machine body (1), and a connecting pipe (29) is connected to one end of each roller (28), characterized in that: a heat conducting oil recovery mechanism is arranged at the lower end of each roller (28), the heat conducting oil recovery mechanism comprises a bottom plate (18), a supporting plate (11) is arranged directly above the bottom plate (18), an adjusting unit for connecting the supporting plate (11) is arranged on the bottom plate (18), the adjusting unit is used to drive the supporting plate (11) to move up and down, a vertical rod (13) is fixed on the supporting plate (11), a semicircular arc plate (2) is fixed at the vertical upper end, the arc surface at the upper end of the arc plate (2) is in close contact with the lower end of the corresponding roller (28), a semicircular arc-shaped receiving strip (3) is fixed at one end of the arc plate (2) close to the connecting pipe (29) along the axis direction of the roller (28), the arc plate (2) and the receiving strip (3) are coaxially arranged, and a gap is left between the arc surface at the upper end of the receiving strip (3) and the lower end of the corresponding roller (28), a through groove is formed at the lower end of the receiving strip (3), a vertical downward flow guide pipe (4) is fixed on the through groove, an open-topped recovery bin (7) is arranged at the upper end of the supporting plate (11), and the recovery bin (7) is located directly below the corresponding flow guide pipe (4).
2. The PI film longitudinal stretching machine according to claim 1, wherein A scraper (14) is fixed at one end of the arc plate (2) away from the receiving strip (3), the upper end of the scraper (14) is in close contact with the lower end of the corresponding roller (28), and an open-topped recovery box (12) is arranged directly below the scraper (14) and is fixed on the supporting plate (11).
3. The PI film longitudinal stretching machine according to claim 2, wherein A pair of symmetrical ear plates (5) are fixed on the side wall of the lower end of the flow guide pipe (4), and the ear plates (5) are detachably connected with the recovery bin (7).
4. The PI film longitudinal stretching machine according to claim 3, wherein The adjusting unit comprises a vertical screw column (15), the upper end of the screw column (15) is fixed with the supporting plate (11), a first threaded sleeve (16) is sleeved at the lower end of the screw column (15), a limiting ring (17) is fixedly sleeved at the lower end of the first threaded sleeve (16), a groove (19) is formed on the bottom plate (18), an annular groove (20) is formed on the inner side wall of the groove (19), the lower end of the first threaded sleeve (16) is rotatably connected in the groove (19), the limiting ring (17) is rotatably connected in the annular groove (20), a pair of symmetrical handle rods (25) are fixed on the outer side wall of the first threaded sleeve (16), a pair of vertical telescopic rods (26) are fixed on the bottom plate (18), and the upper ends of the telescopic rods (26) are fixed with the supporting plate (11).
5. The PI film longitudinal stretching machine according to claim 4, wherein A threaded groove (22) is formed on the outer side wall of the lower end of the first threaded sleeve (16), a second threaded sleeve (23) is sleeved on the first threaded sleeve (16) and is in threaded connection with the threaded groove (22), a plurality of protrusions (27) are fixed on the outer side wall of the second threaded sleeve (23), a circular ring pressing plate (24) is fixedly connected to the lower end of the second threaded sleeve (23), and the circular ring pressing plate (24) is sleeved on the outer side of the screw column (15).
6. The PI film longitudinal stretching machine according to claim 5, wherein A pair of symmetrical support strips (8) are fixed on the inner circumferential wall of the recycling bin (7), and a filter plate (9) is arranged between the two support strips (8), and the upper end surface of the filter plate (9) is arranged in an inclined state.
7. The PI film longitudinal stretching machine according to claim 6, wherein The recycling bin (7) is fixedly connected with a recycling pipe (10) at the bottom, and the recycling pipe (10) is in through connection with the inside of the recycling bin (7).
8. The PI film longitudinal stretching machine according to claim 7, wherein Self-locking rollers (21) are fixedly installed at the bottom of the four corners of the bottom plate (18).