CN209888124U

CN209888124U - Non-stop quick clearing mechanism for carbonized educt at die orifice of PVDC film blowing machine

Info

Publication number: CN209888124U
Application number: CN201920668056.2U
Authority: CN
Inventors: 申振锁; 周宏铎
Original assignee: Zhengzhou New Printing Co Ltd
Current assignee: Zhengzhou New Printing Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-03
Anticipated expiration: 2029-05-10

Abstract

The utility model relates to a PVDC inflation film manufacturing machine especially relates to a PVDC inflation film manufacturing machine die orifice carbonization educt does not shut down quick clear mechanism, including being used for setting up the casing in PVDC inflation film manufacturing machine die orifice department, wear to be equipped with decurrent axis in the casing, the axis upper end extends to the casing external connection has rotary drive device, be provided with guide bearing between axis and the casing upper end, epaxial cover between casing upper end and the rotary drive device is equipped with pressure spring, axis lower extreme coaxial line cover is equipped with and supports the cover, it is equipped with support bearing to support cover upper end cover, it is provided with the jump ring that is used for preventing support bearing from breaking away from to lie in the support bearing upside on the support cover, axis lower extreme lies in and supports cover downside cover and is equipped with the pendulum rod mount pad, one side wherein of pendulum rod mount pad is provided with the pendulum rod, the free, The structure is simple.

Description

Non-stop quick clearing mechanism for carbonized educt at die orifice of PVDC film blowing machine

Technical Field

The utility model relates to a PVDC inflation film manufacturing machine especially relates to a PVDC inflation film manufacturing machine die orifice carbonization educt does not shut down quick clearance mechanism.

Background

PVDC is an ideal packaging material with high barrier property, strong toughness, low-temperature heat sealing, good heat shrinkage and good chemical stability, is unique in the packaging industry, particularly has the performances of moisture resistance, oxygen resistance, moisture resistance, acid and alkali resistance, oil immersion resistance, multiple chemical solvent resistance and the like, and is widely used for packaging foods, medicines and military products for 50 years.

PVDC mainly forms a film through a film blowing machine, the existing film blowing machine mainly comprises an extruder, a machine head, a die head, a cooling device, a foam stabilizing frame, a herringbone plate, a traction roller, a coiling device and the like, wherein a die orifice of the die head is in contact with the PVDC film, after the film blowing machine for producing the PCDC enteric-coated film works for about four hours, the die orifice can generate carbonized precipitates and other impurities, the influence of an inner lip is larger, and the impurities can be adhered to the film along with the blowing of the PVDC film, so that the quality of the film is reduced. The precipitate on the outer lip of the die is easy to clean, and the precipitate on the inner lip is difficult to clean. In order to avoid the generation of unqualified PVDC films, the method adopted at present is to stop the machine every four hours to clean the lip of the die, and the stop can cause the waste of 5-20 kg of PVDC raw materials.

And PVDC is a resin with a processing temperature close to the decomposition temperature, a trace amount of carbonized decomposition products are separated out in the production process, the precipitates are accumulated continuously at the lip of the die, when the precipitates are accumulated to a certain amount, the precipitates are adhered to the film belt and become a part of a product along with the film belt, and the appearance and the service performance of the PVDC film are seriously influenced and even scrapped when the precipitates are large because the color of the film is greatly contrasted with the precipitates and the black precipitates are protruded rigid blocks. At present, the solution to the problem is to stop the machine after a period of time, break the membrane strip, throw away the water and the opening agent in the membrane strip, hang the precipitate with a copper shovel, put through the membrane again, add the water and the opening agent, blow bubble and wind, which is quite laborious, the operation is the fastest for five minutes, the operation is unskilled even for ten to fifteen minutes, the waste is great, and the technical requirements on the personnel are high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a simple to operate, convenient operation, carbonization educt clear away fast, simple structure's PVDC inflation film manufacturing machine die orifice carbonization educt does not shut down quick clear away mechanism.

The utility model discloses a realize through following technical scheme: a PVDC film blowing machine die orifice carbonized educt non-stop quick clearing mechanism comprises a shell arranged at the die orifice of the PVDC film blowing machine, a downward center shaft penetrates through the shell, the upper end of the center shaft extends out of the shell and is connected with a rotary driving device, a guide bearing is arranged between the center shaft and the upper end of the shell, a compression spring is sleeved on the center shaft between the upper end of the shell and the rotary driving device, a support sleeve is coaxially sleeved at the lower end of the center shaft, a support bearing is sleeved at the upper end of the support sleeve, a snap spring used for preventing the support bearing from being separated is arranged on the support sleeve, a swing rod mounting seat is sleeved at the lower end of the center shaft and is positioned at the lower side of the support sleeve, the swing rod mounting seat is fixedly connected with the support sleeve, a swing rod is arranged at one side of the swing rod mounting seat, a cantilever is arranged on the swing rod mounting seat at a position corresponding to the swing rod, a downward supporting plate is arranged at the tail end of the cantilever, a swing rod mounting hole is arranged at the position of the supporting plate corresponding to the swing rod, a return spring is sleeved in the swing rod mounting hole which penetrates through the swing rod mounting hole inwards, a limiting pin for pressing the return spring outwards is arranged on the inner side of the return spring on the swing rod, a swing rod guide hole is arranged at the position, corresponding to the swing rod, on the swing rod mounting seat, a driving groove for driving the swing rod to stretch and retract is arranged at the position, corresponding to the swing rod, of the lower end of the middle shaft, the swing rod penetrates through the swing rod guide hole inwards and extends into the driving groove, the side wall of the driving groove is an inclined surface matched with the swing rod, the lower end of the middle shaft is provided with a transverse supporting plate through an adjusting bolt, the supporting plate is tightly pressed with the lower end face of the swing rod mounting seat, and the adjusting bolt can adjust the pressure between the sliding head and the die orifice of the PVDC film blowing machine.

Furthermore, the cantilever is provided with a long-strip-shaped limiting hole, and the limiting pin extends into the limiting hole.

Furthermore, the swing rod mounting hole and the swing rod guide hole are round holes, and the swing rod is in clearance fit with the swing rod mounting hole and the swing rod guide hole.

Further, the rotation driving device comprises a reel coaxially sleeved at the upper end of the center shaft, a steel wire rope is wound on the reel, two ends of the steel wire rope extend to the outside of the PVDC film blowing machine and are connected with pull rings, and directions of the two ends of the steel wire rope are opposite.

Furthermore, a pressing plate is sleeved on the middle shaft on the lower side of the rotary driving device, and the pressing spring is arranged between the pressing plate and the guide bearing.

Furthermore, a positioning bearing is arranged between the lower end of the support sleeve and the middle shaft, the upper end of the swing rod installation seat is sleeved outside the support sleeve, and the swing rod installation seat and the support sleeve are fixed through a connecting bolt.

Furthermore, the free end of the swing rod is provided with an outward sliding head mounting opening, the mounting end of the sliding head is provided with a mounting handle, the mounting end of the mounting handle is inserted into the sliding head mounting opening, and a jackscrew for fixing the mounting handle is arranged on the side wall of the sliding head mounting opening.

Furthermore, the sliding head comprises an upward supporting arm connected with the mounting handle, an outward triangular tool bit is arranged at the upper end of the supporting arm, and the upper end face of the tool bit is a plane.

The beneficial effects of the utility model reside in that: the PVDC film blowing machine die orifice carbonized precipitate non-stop quick clearing mechanism is arranged in a cavity in the middle of a die orifice at the lower end of a die head through a shell, the installation is convenient, the rotating driving device drives a sliding head to rotate after deflecting, namely the die orifice carbonized precipitate can be circularly scraped, the clearing efficiency is high, a reset spring is arranged, the swing rod can be reset, the next use is convenient, the PVDC film blowing machine die orifice carbonized precipitate non-stop quick clearing mechanism provided by the application can directly pull a steel wire rope rotating ring without stopping the machine, the precipitate inside can be cleared to reach the level of normal production, the time for pulling a rope is less wasted during normal roll changing, only a film with the length of a few meters is needed, part of waste can be caused during roll changing, and the part of waste is just coincided with the waste part during roll changing or is slightly larger than the waste during roll changing, therefore this mechanism can save the waste that causes because of clearing up the educt in a large number, need not cut the membrane area and can clear up the die orifice, utilize existing exhaust hole on the mould to pass wire rope, do not destroy the normal behavior of mould, moreover set up pressure spring, adjusting bolt, can adjust the degree of compressing tightly between slider and the PVDC die orifice through adjusting bolt, after the adjustment, the resistance between slider and the PVDC die orifice can make and take place the displacement between pendulum rod and the axis, the slider outwards extends to the outer edge of die orifice in, strike off the carbonization educt of this department, simultaneously because pressure spring's effect, can play the cushioning effect, avoid blocking.

Drawings

FIG. 1 is a schematic sectional front view showing a state in which embodiment 1 is used;

FIG. 2 is a schematic front sectional view of example 1;

FIG. 3 is a schematic view of a sectional front view of the swing link mounting base and the swing link;

FIG. 4 is an enlarged view of a portion A of FIG. 1;

FIG. 5 is a bottom view of the bottom bracket;

FIG. 6 is a schematic view of a bottom bracket view;

wherein: 1-PVDC film blowing machine, 2-exhaust hole, 3-outer die orifice, 4-inner die orifice, 5-steel wire rope, 6-pull ring, 7-die head lower end die orifice middle cavity, 8-film belt, 9-winding wheel, 10-middle shaft, 11-shell, 12-supporting sleeve, 13-pressing spring, 14-fastening bolt, 15-swing rod mounting seat, 16-supporting plate, 17-adjusting bolt, 18-swing rod, 19-reset spring, 20-pressing plate, 21-tightening nut, 22-key, 23-guide bearing, 24-opening agent pipe insertion hole, 25-connecting flange, 26-supporting bearing, 27-snap spring, 28-positioning bearing, 29-connecting bolt, 30-limiting pin and 31-limiting hole, 32-support plate, 33-mounting handle, 34-cutter head, 35-jackscrew, 36-cantilever, 37-driving groove, 38-carbonized educt, 39-bolt hole, 40-thread, 41-key groove and 42-support arm.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in figures 1-6, a PVDC film blowing machine die orifice carbonized precipitate non-stop quick clearing mechanism comprises a shell 11 arranged at the die orifice of a PVDC film blowing machine 1, the shell is made of stainless steel material, a connecting flange 25 is integrally formed at the lower end of the shell, the connecting flange is fixed with the die orifice of the PVDC film blowing machine through a fastening bolt 14, the theme of the shell extends into a middle cavity 7 of the die orifice at the lower end of the die orifice, no extra space is occupied, the installation is convenient, a downward center shaft 10 penetrates through the shell, the center shaft is made of stainless steel material, a guide bearing 23 is arranged between the center shaft and the upper end of the shell, the guide bearing is in clearance fit with the center shaft, the guide bearing is in interference fit with the shell, a rotary driving device is connected to the upper end of the center shaft and extends out of the shell, a thread 40 is processed on the outer wall of the upper end of the center, the reel is positioned with the middle shaft through a key 22, a compression spring 13 is sleeved on the middle shaft between the upper end of the guide bearing and the rotary driving device, a pressing plate is sleeved on the middle shaft on the lower side of the rotary driving device, the compression spring is sleeved between the pressing plate 20 and the guide bearing, specifically, the pressing plate is a compression nut which is sleeved on the middle shaft in a threaded manner, a tightening nut 21 is further sleeved on the middle shaft on the upper side of the compression nut in a threaded manner, a steel wire rope 5 is wound on the reel, two ends of the steel wire rope extend to the outside of the PVDC film blowing machine through a die head exhaust hole of the PVDC.

The lower end of the centre shaft is coaxially sleeved with a support sleeve 12, the support sleeve is a stainless steel sleeve, the upper end of the support sleeve is sleeved with a support bearing 26, the support sleeve is sleeved with a snap spring 27 which is used for preventing the support bearing from being separated, the lower end of the centre shaft is sleeved with a swing rod mounting seat 15 which is arranged at the lower side of the support sleeve, the swing rod mounting seat is fixedly connected with the support sleeve through a connecting bolt, a positioning bearing 28 is arranged between the lower end of the support sleeve and the centre shaft, the upper end of the swing rod mounting seat is sleeved outside the support sleeve, one side of the swing rod mounting seat is provided with a swing rod 18, the free end of the swing rod is provided with a sliding head which is used for scraping carbonized educt, concretely, a cantilever 36 is integrally formed at the position on the swing rod mounting seat corresponding to the swing rod, the tail end of the cantilever is integrally, a limiting pin 30 for pressing the reset spring outwards is arranged on the swing rod in an interference fit manner and penetrates the inner side of the reset spring, a long-strip-shaped limiting hole 31 is processed on the cantilever, the limiting pin extends into the limiting hole, the limiting pin is in clearance fit with the limiting hole, a swing rod guide hole is processed at a position on the swing rod mounting seat corresponding to the swing rod, a driving groove 37 for driving the swing rod to stretch and retract is arranged at the position of the lower end of the middle shaft corresponding to the swing rod, the swing rod penetrates through the swing rod guide hole inwards and extends into the driving groove, the side wall of the driving groove is an inclined plane matched with the swing rod, the swing rod mounting hole and the swing rod guide hole are round holes, the swing rod is in clearance fit with the swing rod guide hole, the mounting end of the swing rod is in an inverted arc shape, an outward sliding head mounting hole is processed at the free end of the swing rod, a mounting handle 33 is, the cross-section of the mounting end of the mounting handle is rectangular, a jackscrew 35 used for fixing the mounting handle is arranged on the side wall of the mounting opening of the sliding head in a penetrating manner, the sliding head comprises an upward support arm 42 connected with the mounting handle, an outward triangular tool bit 34 is integrally formed at the upper end of the support arm, the upper end surface of the tool bit is a plane, and the tool bit, the support arm and the mounting handle are integrally formed by stainless steel materials, so that the mounting handle is long in service life.

An opening agent pipe insertion hole 24 for passing an opening agent pipe is also formed in the housing.

The lower end of the middle shaft is provided with a transverse supporting plate 16 through an adjusting bolt 17, and the supporting plate is tightly pressed with the lower end face of the swing rod mounting seat.

When the PVDC film blowing machine die orifice carbonized precipitate non-stop quick removing mechanism provided by the embodiment is installed, the mechanism is installed in a cavity in the middle of a die orifice at the lower end of a die head before the die head of the film blowing machine is heated, and the mechanism is firmly fixed through a hole in a shell flange by using a fixing bolt 12 and is convenient to install.

After the first installation, any one of the left and right pull rings is pulled to drive the middle shaft and rotate the adjusting bolt, the contact between the sliding head and the die orifice of the PVDC film blowing machine is too heavy due to the overlarge pulling force, the adjusting bolt needs to be reversely rotated, and the test and the adjustment are repeated until the sliding head is suitable.

Adjusting the radial position of the sliding head, loosening the tight jackscrew, adjusting the tip of the sliding head to a position 3mm away from the edge of the inner die opening, and screwing and fixing the tight jackscrew.

The PVDC film blowing machine die orifice carbonized precipitate non-stop quick clearing mechanism provided by the embodiment has the following installation working principle, after the installation is finished, the pressure between the sliding head and the die orifice is proper after debugging, when the roll is changed, the steel wire rope is pulled out of the PVDC film blowing machine through the exhaust hole 2, then the pull ring is connected, one pull ring is pulled outwards, the wire reel and the middle shaft are driven to rotate through the steel wire rope, due to the friction force between the sliding head and the die orifice, the displacement occurs between the swing rod and the middle shaft, the inclined surface of the driving groove pushes the swing rod outwards in the radial direction, the cutter head is further pushed to move outwards to the edge of the inner die orifice, the middle shaft continues to rotate, the swing rod mounting seat and the sliding head are driven to rotate, the carbonized precipitate 38 is scraped along the circumference, after the roll is changed, the film belt 8 can discharge along the channel between the outer die orifice 3 and the inner die, the swing rod and the driving groove are displaced under the action of the return spring, and the swing rod is flexible in radial direction and can alternatively act to scrape carbonized precipitates, so that the operation is convenient.

In the working process, the extending stroke of the sliding head is controlled through the inclined plane of the driving groove, in order to avoid the overlong extending of the sliding head, the limiting is carried out through the limiting hole and the limiting pin, the stroke of the sliding head is guaranteed to be 3mm, and the working stability is guaranteed.

In the in-process of work, because compression spring's effect, when slider department frictional force was too big, axial displacement took place for the axis, caused the tool bit to cross and blockked, continued work guarantees job stabilization nature and life, and the carbonization educt that can block the department is scraped to many times process and is blockked the department.

In the use, because the multiple location of guiding axle layer, support bearing, location bearing can guarantee that the axis does not take place radial runout, guarantees that the carbonization educt strikes off evenly, guarantees subsequent PVDC membrane quality, can guarantee simultaneously that tool bit and die orifice parallel slip, does not harm the die orifice.

In the using process, due to the clearance fit between the limiting pin and the limiting pin hole, the swing rod cannot rotate, and the working stability is ensured.

After the middle shaft rotates for 10-12 turns, the pull ring is removed, the steel wire rope is plugged into the exhaust hole, the sliding head retracts under the action of the return spring, the PVDC film produced in the process of removing carbonized educt is removed, normal production can be carried out, the machine does not need to be stopped at all, the ropes are directly pulled to turn for a plurality of turns, the educt on the inner side can be cleaned, the level of normal production is achieved, less waste is generated when the ropes are pulled normally changed, only a film with the length of a few meters is needed, a part of waste is generated when the rolls are changed, the waste is just coincided with the waste during roll changing or slightly larger than the waste generated during roll changing, and therefore the waste caused by cleaning the educt can be greatly saved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a PVDC inflation film manufacturing machine die orifice carbonization educt does not shut down quick clearance mechanism which characterized in that: the PVDC film blowing machine comprises a shell arranged at a die orifice of the PVDC film blowing machine, wherein a downward center shaft penetrates through the shell, the upper end of the center shaft extends out of the shell and is connected with a rotary driving device, a guide bearing is arranged between the center shaft and the upper end of the shell, a compression spring is sleeved on the center shaft between the upper end of the shell and the rotary driving device, a support sleeve is coaxially sleeved at the lower end of the center shaft, a support bearing is sleeved at the upper end of the support sleeve, a snap spring used for preventing the support bearing from being separated is arranged on the support sleeve at the upper side of the support bearing, a swing rod mounting seat is sleeved at the lower end of the center shaft and is fixedly connected with the support sleeve, a swing rod is arranged on one side of the swing rod mounting seat, a sliding head used for scraping carbonized precipitates is arranged at the free end, the cantilever end sets up decurrent backup pad, be provided with the pendulum rod mounting hole with the corresponding position department of pendulum rod in the backup pad, the pendulum rod mounting hole inwards passes the pendulum rod mounting hole cover and is equipped with reset spring, it is provided with the spacer pin that is used for outwards compressing tightly reset spring to lie in the reset spring inboard on the pendulum rod, be provided with the pendulum rod guiding hole with the corresponding position department of pendulum rod on the pendulum rod mount pad, axis lower extreme and the corresponding position department of pendulum rod are provided with and are used for driving the flexible drive groove of pendulum rod, the pendulum rod inwards passes the pendulum rod guiding hole and extends to the drive inslot, the drive groove lateral wall be with pendulum rod assorted inclined plane, the axis lower extreme is provided with horizontal layer board through adjusting bolt, compress tightly between the terminal surface under layer board and the pendulum rod mount pad, adjusting bolt can adjust the pressure between slip head and.

2. The non-stop quick removal mechanism for carbonized precipitates at the die orifice of the PVDC film blowing machine according to claim 1, which is characterized in that: the cantilever is provided with a long-strip-shaped limiting hole, and the limiting pin extends into the limiting hole.

3. The non-stop quick removal mechanism for carbonized precipitates at the die orifice of the PVDC film blowing machine according to claim 2, characterized in that: the swing rod mounting hole and the swing rod guide hole are round holes, and the swing rod is in clearance fit with the swing rod mounting hole and the swing rod guide hole.

4. The non-stop quick removal mechanism for carbonized precipitates at the die orifice of the PVDC film blowing machine according to claim 1, which is characterized in that: the rotary driving device comprises a reel which is coaxially sleeved at the upper end of the center shaft, a steel wire rope is wound on the reel, two ends of the steel wire rope extend to the outside of the PVDC film blowing machine and are connected with pull rings, and the directions of the two ends of the steel wire rope are opposite.

5. The non-stop quick removal mechanism for carbonized precipitates at the die orifice of the PVDC film blowing machine according to claim 1, which is characterized in that: the pressing plate is sleeved on the middle shaft on the lower side of the rotary driving device, and the pressing spring is arranged between the pressing plate and the guide bearing.

6. The non-stop quick removal mechanism for carbonized precipitates at the die orifice of the PVDC film blowing machine according to claim 1, which is characterized in that: the positioning bearing is arranged between the lower end of the support sleeve and the middle shaft, the upper end of the swing rod installation seat is sleeved outside the support sleeve, and the swing rod installation seat and the support sleeve are fixed through a connecting bolt.

7. The non-stop quick removal mechanism for carbonized precipitates at the die orifice of the PVDC film blowing machine according to claim 1, which is characterized in that: the free end of the swing rod is provided with an outward sliding head mounting opening, the mounting end of the sliding head is provided with a mounting handle, the mounting end of the mounting handle is inserted into the sliding head mounting opening, and a jackscrew for fixing the mounting handle is arranged on the side wall of the sliding head mounting opening.

8. The non-stop quick removal mechanism for carbonized precipitates at the die orifice of the PVDC film blowing machine according to claim 7, which is characterized in that: the sliding head comprises an upward supporting arm connected with the mounting handle, an outward triangular tool bit is arranged at the upper end of the supporting arm, and the upper end face of the tool bit is a plane.