CN211763465U - Automatic air supplement unit of inflation film manufacturing machine - Google Patents

Abstract

The utility model relates to a inflation film manufacturing machine technical field, in particular to inflation film manufacturing machine's automatic air supplement unit, including the # -shaped frame, infrared detection device, the control box, tonifying qi spare and gassing spare, the # -shaped frame cover is established in the outside of membrane bubble, the membrane bubble is located the top of die head, the # -shaped frame includes two vertical frame that are parallel to each other and two crossbearers that are parallel to each other, infrared detection device includes transmitting terminal and receiving terminal, transmitting terminal and receiving terminal are fixed respectively and are set up at the both ends of vertical frame and are located same straight line, the transmitting terminal can send keeping away from the light beam and be close to the light beam that are parallel to each other, the receiving terminal can receive and keep away from the light beam and be close to the light beam, the receiving terminal is connected with the control box, the control box can control the gassing spare gas in to the membrane bubble and carry out the tonifying qi operation. The utility model discloses a make things convenient for the function of staff control membrane bubble shaping size.

Description

Automatic air supplement unit of inflation film manufacturing machine

Technical Field

The utility model relates to a inflation film manufacturing machine technical field, in particular to inflation film manufacturing machine's automatic air supplement unit.

Background

The film blowing machine is equipment for heating and melting plastic particles and then blowing the plastic particles into a film, the plastic film blowing machine is mostly produced by an up-blowing method, cooling air rings are arranged above a machine head, each cooling air ring is internally provided with an annular air duct, a plurality of air outlets with upward opening directions are generally arranged on the inner sides of the annular air ducts, in the production process, plastic melt flows out of the machine head and forms a film bubble, the film bubble is pulled to move upwards continuously, the cooling air rings on the periphery of the film bubble continuously blow upward high-speed air flow, the high-speed air flow plays a role in cooling and stabilizing the film bubble and the like, and meanwhile, the high-speed air flow of the cooling air rings can also drag the air on the periphery to form a negative pressure effect, so that the film bubble blowing is facilitated.

Prior art's blowing device ring can refer to the CN202137947U utility model patent that the grant bulletin number is, including base, air-cooler and the annular die head that is fixed in the base, the outer wall of annular die head is equipped with outer wind ring, outer wind ring communicate in the air-cooler, the inner wall of annular die head is equipped with interior wind ring, interior wind ring communicate in the air-cooler, interior wind ring wears to be equipped with vertical exhaust pipe, the exhaust pipe intercommunication has the air extractor. Interior wind ring and outer wind ring can carry out inside and outside cooling simultaneously to the membrane bubble, and the exhaust pipe can be with the hot-blast discharge in the membrane bubble, forms the heat exchange to make the gas in the membrane bubble reach a balanced state, constantly remove the hot-blast discharge in the membrane bubble through the exhaust pipe simultaneously, so that the inside temperature of membrane bubble remain stable, and then make the membrane bubble cooling shaping.

The defects of the prior art are that most of the diameters of the film bubbles are controlled through manual observation of an operator in the blow molding process of the film bubbles, when the diameters of the film bubbles are larger than or smaller than a set value, the air replenishing and air discharging operations are needed to be manually performed by the operator to control the formed sizes of the film bubbles, but errors are easily caused in the manual observation of the operator, and therefore the sizes of the film bubbles are easily further influenced when the operator performs air replenishing or air discharging.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic air supplement unit of inflation film manufacturing machine has realized making things convenient for the function of staff control membrane bubble shaping size.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

an automatic air supplement device of a film blowing machine comprises a # -shaped frame and an infrared detection device, control box, tonifying qi spare and gassing spare, the groined type frame cover is established in the outside of membrane bubble, the membrane bubble is located the top of die head, the center department of groined type frame is located same straight line with the center department of die head, the groined type frame includes two indulges that are parallel to each other and two crossbearers that are parallel to each other, infrared detection device includes transmitting terminal and receiving terminal, transmitting terminal and receiving terminal are fixed respectively and are set up at the both ends of indulging the frame and are located same straight line, the transmitting terminal can send the keeping away from the light beam that is parallel to each other and be close to the light beam, the receiving terminal can receive and keep away from the light beam and be close to the light beam, it is located to keep away from between light beam and the membrane bubble to be close to the light beam, the receiving terminal is connected with the control box, the control box can control the gassing spare gas in to.

By adopting the technical scheme, the film bubble is extruded by the die head, when the film bubble cannot shield the approaching light beam all the time in the gradual expansion process, the radius of the film bubble is smaller, at the moment, the receiving end sends a signal to the control box, the control box controls the air supplement piece, so that an external air source enters the die head through the air supplement piece to enable the film bubble to continue to expand, when the film bubble expands to shield the approaching light beam and not shield the far light beam, the radius of the film bubble is in a set value within an error allowable range, and the error range is the distance between the approaching light beam and the far light beam; when the light beam shelters from when the bubble will be kept away from, then it is great to explain the radius of bubble, and the receiving terminal signals to the control box this moment, and the control box control piece of releasing for the gas outgoing in the bubble, so that the bubble shrink, the border until the bubble will be close to the light beam and shelter from and will not keep away from the light beam and shelter from, consequently realized not needing staff's manual observation and regulation, can be with the radius control of bubble in the error allowed band, improved the qualification rate and the production efficiency of bubble production.

The utility model discloses further set up to: the air supplementing part comprises an air supplementing pipe, a first adjusting part and an air supplementing motor, the air supplementing part comprises an air releasing pipe, a second adjusting part and an air releasing motor, the air supplementing pipe and the air releasing pipe are respectively communicated with an air ring, the first adjusting part and the second adjusting part are symmetrically arranged, the first adjusting part is communicated and arranged on the air supplementing pipe, the second adjusting part is communicated and arranged on the air releasing pipe, the first adjusting part comprises an L-shaped pipe, an adjusting cylinder, a driving rod and a supporting seat, the L-shaped pipe comprises an input pipe and an output pipe, the output pipe is perpendicular to the input pipe and is communicated with the side wall of the input pipe, the adjusting cylinder is inserted in the input pipe, the axis direction of the adjusting cylinder and the axis direction of the input pipe are positioned on the same straight line, an air inlet hole is formed in one side, close to the output pipe, of the adjusting cylinder, the end face, far away from the output pipe, of, the inserted link passes the terminal surface of input tube and with the terminal surface grafting cooperation of input tube, rack and inserted link fixed connection, the supporting seat includes roof and bottom plate, the equal fixed connection of input tube and output tube is on the roof, the input tube perpendicular to roof, the inserted link passes the roof, the tonifying qi motor is connected with the control box, the fixed bottom plate that sets up at first regulating part of tonifying qi motor, periphery wall fixedly connected with tonifying qi gear at the output of tonifying qi motor, the tonifying qi gear is with the rack intermeshing of first regulating part, the gassing motor is connected with the control box, the fixed bottom plate that sets up at the second regulating part of gassing motor, fixedly connected with gassing gear on the periphery wall of the output of gassing motor, the rack intermeshing of gassing gear and second regulating part.

By adopting the technical scheme, when air is replenished, the input pipe of the first adjusting piece is communicated with the air source, the output pipe of the first adjusting piece is fixedly connected with the air replenishing pipe, the control box controls the air replenishing gear on the air replenishing motor to rotate after receiving an air replenishing signal from the receiving end, the air replenishing gear drives the rack on the first adjusting piece to move, the adjusting cylinder in the first adjusting piece moves along the input pipe, so that the coincidence area between the air inlet hole in the first adjusting piece and the output pipe can be changed, the volume of the gas entering the air replenishing pipe in unit time can be adjusted, when the difference value between the radius of the bubble and the set value is large, the coincidence area between the air inlet hole in the first adjusting piece and the output pipe can be increased, the gas in the air source can rapidly enter the bubble, when the difference value between the radius of the bubble and the set value is small, the coincidence area between the air inlet hole in the first adjusting piece and the output pipe can be reduced, a small amount of gas is conveniently added into the membrane bubble, so that the function of improving the gas supplementing precision when the gas in the membrane bubble is supplemented is realized; when needs gassing, with the input tube and the gassing pipe intercommunication of second regulating part, with the output tube and the external atmosphere intercommunication of second regulating part, the control box receives the gassing gear rotation on the gassing motor of control behind the gassing signal of receiving terminal, rack on the gassing gear drive second regulating part moves, thereby drive the interior regulation section of thick bamboo of second regulating part and move along the input tube, can make the coincident area between the inlet port in the second regulating part and the output tube change, consequently realized can improve the function of discharging the precision when discharging the gas in the membrane bubble.

The utility model discloses further set up to: the regulation section of thick bamboo includes the end panel, and the end panel is relative with one side of adjusting a section of thick bamboo opening form, and peg graft pole and end panel fixed connection are fixed on the peg graft pole and are provided with the grafting piece, and grafting piece fixed connection is between peg graft pole and rack.

Through adopting above-mentioned technical scheme, adjust a section of thick bamboo and remove under the drive of tonifying qi motor or gassing motor, just remove when setting up with the output tube is crisscross when the end panel, plug-in block and roof butt, adjust a section of thick bamboo this moment and can't continue to remove along the input tube, the plug-in block plays limiting displacement to the removal of adjusting a section of thick bamboo, when needs open first regulating part or second regulating part, the end panel removes the gas circulation that can make in first regulating part or the second regulating part to the direction that is close to the output tube, when having realized needing to make gas circulation promptly, the function that first regulating part or second regulating part can be opened fast, the regulation efficiency of first regulating part and second regulating part is provided.

The utility model discloses further set up to: the end face of the input pipe close to the output pipe is provided with a plug hole, the plug rod is in plug fit with the plug hole, and a rubber pad is fixedly arranged on the end face of the end face plate close to the plug rod.

Through adopting above-mentioned technical scheme, when the coincidence area of inlet port and output tube was the biggest, end panel and input tube were close to the terminal surface butt of output tube, and the rubber pad is extrudeed this moment, because the rubber pad has elasticity, consequently the rubber pad can be with the gap further sealed between spliced eye and the inserted link, consequently strengthened the leakproofness of first regulating part and second regulating part.

The utility model discloses further set up to: one side intercommunication that the end panel was kept away from to the spliced eye is provided with the connecting cylinder, and the axis of connecting cylinder and the axis of input tube are located same straight line, have seted up the intercommunicating pore on the roof panel, and the connecting cylinder passes the intercommunicating pore, fixedly connected with bellows between the periphery wall of grafting piece and roof, and the axis direction and the inserted bar of bellows are located same straight line, and the bellows has scalability.

Through adopting above-mentioned technical scheme, the bellows is fixed to be glued and is established between grafting piece and roof, when gaseous gap between from grafting pole and the connecting cylinder is worn out, the bellows plays the effect of accepting to gas, make the difficult overflow of gas in first regulating part or the second regulating part, simultaneously because the bellows has scalability, consequently the bellows can stretch out and draw back along with the removal of inserting the pole, the gaseous intercommunication department of input tube and output tube of being impressed of bellows when the bellows shrink, consequently make the bellows be difficult for damaging because of holding gas is more.

The utility model discloses further set up to: the supporting seat further comprises a supporting rod, the supporting rod is fixedly connected to one side, close to the bottom plate, of the top plate, the supporting rod is parallel to the rack, the inserting block is close to a sliding rod fixedly connected to the end face of the rack, the sliding rod is perpendicular to the supporting rod and abutted to the supporting rod, and scale marks are arranged on the outer peripheral wall of the supporting rod.

Through adopting above-mentioned technical scheme, when the inserted link removed, the slide bar removed along with the inserted block, through the removal of slide bar for the bracing piece, the change of slide bar position on the scale mark promptly, can survey the displacement of adjusting a section of thick bamboo, and then makes things convenient for the coincidence area between staff control inlet port and the output tube, the control gas circulation in the first regulating part of being convenient for promptly or the second regulating part.

The utility model discloses further set up to: the bottom plate is provided with a bottom hole, the rack is in sliding fit with the bottom hole, and the bottom hole has a limiting effect on the rotation of the rack relative to the bottom plate.

Through adopting above-mentioned technical scheme, the bottom outlet plays limiting displacement to the rotation of rack for adjust a section of thick bamboo and can only move along the axis direction that is on a parallel with the input tube, consequently make and adjust a section of thick bamboo and be difficult for taking place to rotate for the input tube, make the area of coincidence between inlet port and the output tube only receive the influence of an adjustment section of thick bamboo displacement.

The utility model discloses further set up to: a smooth layer is arranged on the peripheral wall of the adjusting cylinder.

Through adopting above-mentioned technical scheme, frictional force between a smooth layer can reduce regulation section of thick bamboo and the input tube, reduces the wearing and tearing to a regulation section of thick bamboo and input tube when adjusting a section of thick bamboo and removing for the input tube, makes the removal of adjusting a section of thick bamboo along the input tube more smooth and easy simultaneously.

To sum up, the utility model discloses following technological effect has:

1. by adopting the structure of the air supply device, the function of conveniently controlling the size of the formed film bubble is realized;

2. by adopting the structure of the infrared detection device, the function of measuring the radius of the bubble is realized;

3. through the structure that adopts first regulating part and second regulating part, realized improving the function of tonifying qi and gassing precision.

Drawings

FIG. 1 is a schematic three-dimensional view of the present implementation;

FIG. 2 is a partial three-dimensional schematic view highlighting an infrared detection device;

FIG. 3 is a schematic view, partly in section, highlighting the internal structure of the first adjustment member;

FIG. 4 is a fragmentary three-dimensional schematic view highlighting the first and second conditioning members of FIG. 1; a

Fig. 5 is a partial three-dimensional schematic view of the insertion fit of the protruding rack with the base plate.

In the figure, 1, a derrick; 11. a longitudinal frame; 12. a cross frame; 2. an infrared detection device; 21. a transmitting end; 22. a receiving end; 211. away from the beam; 212. close to the light beam; 3. a control box; 4. a gas supplementing piece; 41. a gas supplementing pipe; 42. a first adjustment member; 43. a gas supplementing motor; 431. a gas supplementing gear; 421. an L-shaped tube; 4211. an input tube; 4212. an output pipe; 42121. inserting holes; 42122. a connecting cylinder; 422. an adjusting cylinder; 4221. an air inlet; 4222. an end panel; 423. a drive rod; 4231. a plug rod; 4232. a rack; 4233. an insertion block; 42331. a slide bar; 424. a supporting seat; 4241. a top plate; 42411. a communicating hole; 4242. a base plate; 42421. a bottom hole; 4243. a support bar; 42431. scale lines; 425. a bellows; 5. a venting member; 51. discharging the air pipe; 52. a second adjustment member; 53. an air discharge motor; 531. a bleed gear; 6. a die head; 7. a wind ring; 8. a blower; 9. a fan; 10. and (4) forming a film bubble.

Detailed Description

As shown in fig. 1, the utility model discloses an automatic air supplement device of a film blowing machine, the film blowing machine comprises a die head 6, a wind ring 7 and a blower 8, the wind ring 7 is fixedly arranged at the die head 6, the blower 8 is communicated with the wind ring 7 through a pipeline, and the extruder inputs blow molding raw materials in a molten state into the die head 6; air supplement unit includes well word frame 1, infrared detection device 2, control box 3, air supplement piece 4 and gassing piece 5, well word frame 1 covers the outside of establishing at membrane bubble 10, membrane bubble 10 is located the top of die head 6, the center department of well word frame 1 is located same straight line with the center department of die head 6, infrared detection device 2 is fixed to be set up on well word frame 1, infrared detection device 2 can measure the radius of membrane bubble 10, infrared detection device 2 links to each other with control box 3, air supplement piece 4 and gassing piece 5 communicate in wind ring 7 respectively, control box 3 can control gassing piece 5 and carry out the operation of exhausting to the gas in membrane bubble 10, control box 3 can control air supplement piece 4 and carry out the tonifying qi to the gas in membrane bubble 10, realize the control to membrane bubble 10 shaping size through tonifying qi piece 4 and gassing piece 5, make the radius of membrane bubble 10 the same with required setting value.

As shown in fig. 2, the derrick 1 includes two longitudinal frames 11 parallel to each other and two transverse frames 12 parallel to each other, the infrared detection device 2 includes a transmitting end 21 and a receiving end 22, the transmitting end 21 and the receiving end 22 are respectively and fixedly disposed at two ends of one of the longitudinal frames 11 and located on the same straight line, the transmitting end 21 can emit a far light beam 211 and a near light beam 212 parallel to each other, the receiving end 22 can receive the far light beam 211 and the near light beam 212, the near light beam 212 is located between the far light beam 211 and the bubble 10, and the receiving end 22 is connected to the control box 3. The film bubble 10 is extruded by the die head 6 and is blow-molded and cooled under the wind power of the wind ring 7, when the film bubble 10 cannot shield the approaching light beam 212 all the time in the gradual expansion process, the radius of the film bubble 10 is small, at the moment, the receiving end 22 sends a signal to the control box 3, the control box 3 controls the air supplement piece 4 to supplement air into the film bubble 10, so that the film bubble 10 continues to expand, when the film bubble 10 expands to shield the approaching light beam 212 but not shield the far light beam 211, the radius of the film bubble 10 is in a set value within an error allowable range, and the error range is the distance between the approaching light beam 212 and the far light beam 211; when the bubble 10 will keep away from the light beam 211 and shelter from, then explain that the radius of bubble 10 is great, receiving terminal 22 sends the signal to control box 3 this moment, control box 3 control is released the piece 5 and is discharged the partial gas in the bubble 10 to make the bubble 10 shrink, until the border of bubble 10 will be close to the light beam 212 and shelter from and will not keep away from the light beam 211 and shelter from, consequently realized not needing staff's manual observation and regulation, can be in the error allowed range with the radius control of bubble 10, the qualification rate and the production efficiency of bubble 10 production have been improved.

As shown in fig. 1, the air supplement member 4 includes an air supplement pipe 41, a first adjusting member 42 and an air supplement motor 43 (see fig. 4), the air release member 5 includes an air release pipe 51, a second adjusting member 52 and an air release motor 53, the first adjusting member 42 and the second adjusting member 52 are symmetrically arranged, the internal structures of the first adjusting member 42 and the second adjusting member 52 are the same, and the air release pipe 51 and the air supplement pipe 41 are respectively communicated with the air ring 7.

In this embodiment, the internal structures of the first adjusting member 42 and the second adjusting member 52 are described by taking the first adjusting member 42 as an example, as shown in fig. 3, the first adjusting member 42 includes an L-shaped tube 421, an adjusting cylinder 422, a driving rod 423 and a supporting seat 424, the L-shaped tube 421 includes an input tube 4211 and an output tube 4212, the output tube 4212 is perpendicular to the input tube 4211 and is communicated with a side wall of the input tube 4211, the adjusting cylinder 422 is inserted into the input tube 4211, and an air inlet hole 4221 is formed in a side of the adjusting cylinder 422 close to the output tube 4212, the input tube 4211 and the adjusting cylinder 422 adopted by the present invention are both cylindrical, an end surface of the adjusting cylinder 422 far from the output tube 4212 is open, the adjusting cylinder 422 includes an end surface plate 4222, and the end surface plate 4222 is opposite to one; the driving rod 423 comprises a plug rod 4231 and a rack 4232, the plug rod 4231 is fixedly connected with the end panel 4222, a plug hole 42121 is formed in the end face, close to the end panel 4222, of the input tube 4211, the plug rod 4231 is in plug fit with the plug hole 42121, and the rack 4232 is fixedly connected with the plug rod 4231; the supporting seat 424 comprises a top plate 4241, a bottom plate 4242 and supporting rods 4243, the supporting rods 4243 are fixedly connected to one side, close to the bottom plate 4242, of the top plate 4241, a plurality of the supporting rods 4243 are arranged, the supporting rods 4243 are parallel to the racks 4232, the supporting rods 4243 are vertically placed on the ground, the input pipe 4211 and the output pipe 4212 are fixedly connected to the top plate 4241, the input pipe 4211 is perpendicular to the top plate 4241, and the insertion rod 4231 penetrates through the top plate 4241.

As shown in fig. 4, the air supply motor 43 is connected to the control box 3, an air supply gear 431 is fixedly connected to an outer circumferential wall of an output end of the air supply motor 43, the air supply gear 431 is engaged with the rack 4232, the air release motor 53 is connected to the control box 3, an air release gear 531 is fixedly connected to an outer circumferential wall of an output end of the air release motor 53, and the air release gear 531 is engaged with the rack 4232 of the second adjusting member 52. The input pipe 4211 of the first adjusting member 42 is communicated with an air source, the air source can adopt a fan 9, the output pipe 4212 of the first adjusting member 42 is fixedly connected with the air supplementing pipe 41, the input pipe 4211 of the second adjusting member 52 is communicated with the air discharging pipe 51, and the output pipe 4212 of the second adjusting member 52 is communicated with the outside atmosphere.

When the air needs to be discharged, the control box 3 receives the air discharge signal from the receiving end 22 and then controls the air discharge gear 531 on the air discharge motor 53 to rotate, the air discharge gear 531 drives the rack 4232 on the second adjusting member 52 to move, so as to drive the adjusting cylinder 422 in the second adjusting member 52 to move along the input tube 4211, and thus the overlapping area between the air inlet 4221 in the second adjusting member 52 and the input tube 4211 can be changed, so that the amount of air discharged from the air discharge tube 51 in a unit time can be adjusted, when the bubble 10 expands too much, the overlapping area between the air inlet 4221 in the second adjusting member 52 and the output tube 4212 can be increased, so that the air in the bubble 10 can be discharged quickly, when the radius of the expanded bubble 10 is smaller than the set value, the overlapping area between the air inlet 4221 in the second adjusting member 52 and the output tube 4212 can be reduced, so that a small amount of air in the bubble 10 can be discharged conveniently, a function of improving the discharge accuracy when discharging the gas inside the film bubble 10 is thus realized.

When air is required to be supplied, the control box 3 receives an air supply signal from the receiving end 22 and then controls the air supply gear 431 on the air supply motor 43 to rotate, the air supply gear 431 drives the rack 4232 on the first adjusting piece 42 to move, the adjusting cylinder 422 in the first adjusting piece 42 moves along the input pipe 4211, so that the overlapping area between the air inlet hole 4221 in the first adjusting piece 42 and the output pipe 4212 can be changed, the volume of the gas entering the air supply pipe 41 in unit time can be adjusted, when the difference value between the radius of the bubble 10 and the set value is large, the overlapping area between the air inlet hole 4221 in the first adjusting piece 42 and the output pipe 4212 can be increased, so that the gas in the fan 9 can rapidly enter the bubble 10, when the difference value between the radius of the bubble 10 and the set value is small, the overlapping area between the air inlet hole 4221 in the first adjusting piece 42 and the output pipe 4212 can be reduced, and a small amount of gas can be conveniently added into the bubble 10, therefore, a function of improving the gas supply accuracy when supplying gas to the inside of the bubble 10 is realized.

When adjusting a section of thick bamboo 422 and moving to and crisscross with output tube 4212, the coincidence area between inlet port 4221 and the input tube 4211 is zero, and first regulating part 42 closes promptly, when needs make the gas circulation of first regulating part 42, in order to make adjusting a section of thick bamboo 422 difficult keep away from output tube 4212, improves the regulation efficiency of first regulating part 42, as shown in fig. 3, the utility model discloses fixedly connected with grafting piece 4233 between grafting pole 4231 and rack 4232, the distance between grafting piece 4233 and roof 4241 is the same with the diameter of output tube 4212. The adjusting cylinder 422 is driven by the air supply motor 43 to move, when the end panel 4222 just moves to be staggered with the output tube 4212, the inserting block 4233 is abutted to the top plate 4241, at the moment, the adjusting cylinder 422 cannot move continuously along the input tube 4211, the inserting block 4233 plays a limiting role in the movement of the adjusting cylinder 422, when the first adjusting piece 42 needs to be opened, the end panel 4222 moves towards the direction close to the output tube 4212 to enable gas in the first adjusting piece 42 to circulate, namely, when the gas needs to be circulated, the first adjusting piece 42 or the second adjusting piece 52 can be opened quickly, and the adjusting efficiency of the first adjusting piece 42 and the second adjusting piece 52 is improved.

In order to reduce the resistance when adjusting a section of thick bamboo 422 and slide for the inside wall of input tube 4211, the utility model discloses be provided with the smooth layer on adjusting a section of thick bamboo 422's periphery wall, the smooth layer can adopt the polytetrafluoroethylene material. The polytetrafluoroethylene material has a low coefficient of friction, so that friction between the adjustment cylinder 422 and the input tube 4211 can be reduced, abrasion on the adjustment cylinder 422 and the input tube 4211 when the adjustment cylinder 422 moves relative to the input tube 4211 is reduced, and the adjustment cylinder 422 can move more smoothly along the input tube 4211.

When the end plate 4222 moves to the end face butt with the input tube 4211, the gas circulation of the first adjusting piece 42 is the maximum value, in order to strengthen the leakproofness of the first adjusting piece 42, the utility model discloses fixed rubber pad that is provided with on the end face that the end plate 4222 is close to the peg 4231. When the end plate 4222 abuts against the end surface of the input tube 4211 close to the output tube 4212, the rubber pad is pressed, and the rubber pad can further seal the gap between the plug hole 42121 and the plug rod 4231 due to the elasticity of the rubber pad, so that the sealing performance of the first adjusting member 42 and the second adjusting member 52 is enhanced.

In order to further enhance the sealing performance of the first adjusting member 42, as shown in fig. 3, the present invention provides a connecting tube 42122 communicated with one side of the insertion hole 42121 far from the end plate 4222, an axis of the connecting tube 42122 and an axis of the input tube 4211 are located on the same straight line, a communicating hole 42411 is provided on a top plate 4241, the connecting tube 42122 passes through the communicating hole 42411, the communicating tube 42122 is fixedly connected with an inner side wall of the communicating hole 42411, a corrugated tube 425 is fixedly connected between an outer peripheral wall of the insertion block 4233 and the top plate 4241, an axis direction of the corrugated tube 425 and the insertion rod 4231 are located on the same straight line, the corrugated tube 425 has a telescopic property, and the corrugated tube 425 can refer to the invention patent with the publication No. CN 103953801B.

The corrugated tube 425 is fixedly adhered between the insert block 4233 and the top plate 4241, when gas penetrates out from a gap between the insert rod 4231 and the connecting cylinder 42122, the corrugated tube 425 plays a role in receiving the gas, so that the gas in the first adjusting piece 42 or the second adjusting piece 52 is not easy to overflow, meanwhile, the corrugated tube 425 can stretch and contract along with the movement of the insert block 4233 due to the telescopic property of the corrugated tube 425, and when the corrugated tube 425 shrinks, the gas in the corrugated tube 425 is pressed into a communication position of the input tube 4211 and the output tube 4212, so that the corrugated tube 425 is not easy to damage due to the fact that a large amount of gas is contained.

In order to facilitate the adjustment of the gas flow rate in the valve by the operator, as shown in fig. 4, the sliding rod 42331 is fixedly connected to the end surface of the insertion block 4233, the sliding rod 42331 is perpendicular to the support rod 4243 and abuts against the support rod 4243, and the outer peripheral wall of the support rod 4243 is provided with scale marks 42431. When the plug rod 4231 moves, the sliding rod 42331 moves along with the plug block 4233, and the movement distance of the adjusting cylinder 422 can be measured through the movement of the sliding rod 42331 relative to the support rod 4243, namely the change of the position of the sliding rod 42331 on the scale mark 42431, so that a worker can conveniently control the overlapping area between the air inlet hole 4221 and the output pipe 4212, namely the gas circulation control in the first adjusting piece 42 or the second adjusting piece 52.

In order to make the adjusting cylinder 422 not rotate relatively to the input tube 4211 easily in the moving process, as shown in fig. 5, the utility model discloses set up the bottom hole 42421 on bottom plate 4242, rack 4232 and bottom hole 42421 sliding fit, the bottom hole 42421 plays limiting displacement to the rotation of rack 4232 for bottom plate 4242. The limiting function of the bottom hole 42421 on the rack 4232 enables the adjusting cylinder 422 to move only along the direction parallel to the axis of the input tube 4211, so that the adjusting cylinder 422 is not easy to rotate relative to the input tube 4211, and the overlapping area between the air inlet hole 4221 and the input tube 4211 is only affected by the moving distance of the adjusting cylinder 422.

The utility model discloses a theory of operation does:

when the film bubble 10 cannot shield the approaching light beam 212 all the time in the gradual expansion process, the control box 3 receives an air supplement signal from the receiving end 22 and then controls the air supplement gear 431 on the air supplement motor 43 to rotate, the air supplement gear 431 drives the rack 4232 on the first adjusting piece 42 to move, so that the air in the fan 9 can enter the output pipe 4212 of the first adjusting piece 42 through the air inlet hole 4221 in the first adjusting piece 42, then the air enters the air supplement pipe 41, the air supplement pipe 41 conveys the air into the air ring 7, and the film bubble 10 continues to expand until the film bubble 10 expands to shield the approaching light beam 212 and not shield the far light beam 211; when the bubble 10 is far from the light beam 211 to be shielded, the receiving end 22 sends a signal to the control box 3 at this time, the control box 3 receives a gas release signal from the receiving end 22 and then controls the gas release gear 531 on the gas release motor 53 to rotate, the gas release gear 531 drives the rack 4232 on the second adjusting part 52 to move, so as to drive the adjusting cylinder 422 in the second adjusting part 52 to move along the input pipe 4211, so that the gas in the gas supply pipe 41 can enter the output pipe 4212 of the second adjusting part 52 through the gas inlet hole 4221 on the second adjusting part 52, and then the gas is discharged into the atmosphere until the edge of the bubble 10 is close to the light beam 212 and is not shielded from the light beam 211, thereby realizing that the radius of the bubble 10 can be controlled within an error allowable range without manual observation and adjustment of workers, and improving the yield and production efficiency of the bubble 10.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. An automatic air supplement device of a film blowing machine is characterized by comprising a # -shaped frame (1), an infrared detection device (2), a control box (3), an air supplement piece (4) and an air release piece (5), wherein the # -shaped frame (1) is covered on the outer side of a film bubble (10), the film bubble (10) is positioned above a die head (6), the center of the # -shaped frame (1) and the center of the die head (6) are positioned on the same straight line, the # -shaped frame (1) comprises two longitudinal frames (11) which are parallel to each other and two transverse frames (12) which are parallel to each other, the infrared detection device (2) comprises a transmitting end (21) and a receiving end (22), the transmitting end (21) and the receiving end (22) are respectively and fixedly arranged at the two ends of the longitudinal frames (11) and positioned on the same straight line, the transmitting end (21) can emit far light beams (211) and close light beams (212) which are parallel to each other, the receiving end (22) can receive the far light beams (211) and close to, the near light beam (212) is located between the far light beam (211) and the film bubble (10), the receiving end (22) is connected with the control box (3), the control box (3) can control the air release piece (5) to perform air exhaust operation on air in the film bubble (10), and the control box (3) can control the air supplement piece (4) to perform air supplement operation on the air in the film bubble (10).

2. The automatic air supply device of the film blowing machine according to claim 1, wherein the air supply member (4) comprises an air supply pipe (41), a first adjusting member (42) and an air supply motor (43), the air discharge member (5) comprises an air discharge pipe (51), a second adjusting member (52) and an air discharge motor (53), the air supply pipe (41) and the air discharge pipe (51) are respectively communicated with the air ring (7), the first adjusting member (42) and the second adjusting member (52) are symmetrically arranged, the first adjusting member (42) is communicated with the air supply pipe (41), the second adjusting member (52) is communicated with the air discharge pipe (51), the first adjusting member (42) comprises an L-shaped pipe (421), an adjusting cylinder (422), a driving rod (423) and a supporting seat (424), the L-shaped pipe (421) comprises an input pipe (4211) and an output pipe (4212), the output pipe (4212) is perpendicular to the input pipe (4211) and is communicated with the side wall of the input pipe (4211), an adjusting cylinder (422) is inserted in an input pipe (4211), the axis direction of the adjusting cylinder (422) and the axis direction of the input pipe (4211) are positioned on the same straight line, one side, close to an output pipe (4212), of the adjusting cylinder (422) is provided with an air inlet hole (4221), the end face, far away from the output pipe (4212), of the adjusting cylinder (422 is in an open shape, a driving rod (423) comprises an insertion rod (4231) and a rack (4232), the insertion rod (4231) is fixedly connected with the end face, close to the output pipe (4212), of the adjusting cylinder (422), the insertion rod (4231) penetrates through the end face of the input pipe (4211) and is in insertion fit with the end face of the input pipe (4211), the rack (4232) is fixedly connected with the insertion rod (4231), a supporting seat (424) comprises a top plate (4241) and a bottom plate (4242), the input pipe (4211) and the output pipe (4212) are fixedly connected to the top plate (4241), the input pipe (, the inserted link (4231) passes through the top plate (4241), the air supply motor (43) is connected with the control box (3), the air supply motor (43) is fixedly arranged on the bottom plate (4242) of the first adjusting piece (42), an air supply gear (431) is fixedly connected to the outer peripheral wall of the output end of the air supply motor (43), the air supply gear (431) is meshed with a rack (4232) of the first adjusting piece (42), the air discharge motor (53) is connected with the control box (3), the air discharge motor (53) is fixedly arranged on the bottom plate (4242) of the second adjusting piece (52), an air discharge gear (531) is fixedly connected to the outer peripheral wall of the output end of the air discharge motor (53), and the air discharge gear (531) is meshed with the rack (4232) of the second adjusting piece (52).

3. The automatic air supply device of the film blowing machine is characterized in that the adjusting cylinder (422) comprises an end plate (4222), the end plate (4222) is opposite to one side with an opening shape of the adjusting cylinder (422), the insertion rod (4231) is fixedly connected with the end plate (4222), an insertion block (4233) is fixedly arranged on the insertion rod (4231), and the insertion block (4233) is fixedly connected between the insertion rod (4231) and the rack (4232).

4. The automatic air supply device of the film blowing machine as claimed in claim 3, wherein an insertion hole (42121) is formed in the end face of the input pipe (4211) close to the output pipe (4212), the insertion rod (4231) is in insertion fit with the insertion hole (42121), and a rubber pad is fixedly arranged on the end face of the end face plate (4222) close to the insertion rod (4231).

5. The automatic air supply device of the film blowing machine is characterized in that one side, far away from an end plate (4222), of the insertion hole (42121) is provided with a connecting cylinder (42122) in a communicating mode, the axis of the connecting cylinder (42122) is located on the same straight line with the axis of the input pipe (4211), a communicating hole (42411) is formed in a top plate (4241) plate, the connecting cylinder (42122) penetrates through the communicating hole (42411), a corrugated pipe (425) is fixedly connected between the outer peripheral wall of the insertion block (4233) and the top plate (4241), the axis direction of the corrugated pipe (425) and the insertion rod (4231) are located on the same straight line, and the corrugated pipe (425) is flexible.

6. The automatic air supply device of the film blowing machine according to claim 2, wherein the supporting seat (424) further comprises a supporting rod (4243), the supporting rod (4243) is fixedly connected to one side, close to the bottom plate (4242), of the top plate (4241), the supporting rod (4243) is parallel to the rack (4232), a sliding rod (42331) is fixedly connected to an end face, close to the rack (4232), of the insertion block (4233), the sliding rod (42331) is perpendicular to the supporting rod (4243) and abuts against the supporting rod (4243), and scale marks (42431) are arranged on the outer peripheral wall of the supporting rod (4243).

7. The automatic air supply device of the film blowing machine according to claim 2, characterized in that a bottom hole (42421) is formed in the bottom plate (4242), the rack (4232) is slidably matched with the bottom hole (42421), and the bottom hole (42421) has a limiting effect on the rotation of the rack (4232) relative to the bottom plate (4242).

8. The automatic air supplement unit of the film blowing machine as claimed in claim 2, wherein a smooth layer is provided on the outer peripheral wall of the adjusting cylinder (422).

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