CN206718458U - A kind of air cushion roller of blow moulding machine - Google Patents

Abstract

The utility model discloses an air cushion roller of a blow molding machine, which comprises a roller body, an airflow channel is arranged in the center of the roller body, the airflow channel is connected with an air pump, and a plurality of first air holes are opened on the surface of the roller body , also includes a cylindrical bushing that is rotatably arranged on the side of the roller body, an interlayer is formed between the bushing and the roller body, a number of second air holes are provided on the surface of the bushing, and a number of second air holes are arranged in the interlayer for Unclog component to unclog the second air hole. After the airflow enters the airflow channel from the air pump, the airflow enters the interlayer from the first air hole and then flows out from the second air hole, forming an air cushion layer on the surface of the bushing, and the plastic film can be suspended on the air cushion layer formed on the surface of the bushing; The sleeve is set on the outside, so the second air hole is easy to block, and the dredging part set in the interlayer will clear the foreign matter that blocks the second air hole from the inside to the outside of the bush, preventing foreign matter from entering the air flow channel, and greatly extending the use of the air roller life.

Description

An air cushion roller for a blow molding machine

technical field

The utility model relates to a blow molding production equipment, in particular to an air cushion roller of a blow molding machine.

Background technique

The film blowing machine is a machine that heats and melts plastic particles and then blows them into films. As various films are more and more widely used in production and life, the film blowing machine technology has also developed rapidly.

The Chinese patent document with the application number 01243077.3 discloses an air cushion roller of a blow molding machine. The air cushion roller can produce an air cushion layer that is a plastic film suspended on the surface of the air cushion roller. An air flow channel is arranged in the center of the roller body. The film on the surface of the roller body The receiving surface is provided with a number of air holes communicating with the airflow channel.

In the above technical solution, one end of the airflow channel in the center of the roller body is closed, and the other end is connected to the air pump, so that the air holes on the surface of the roller body eject airflow with a certain air pressure, and the plastic film is suspended on the surface of the roller body under the action of the airflow, but In the actual production process, the distance between the surface of the roller body and the plastic film is very close. Due to the high-pressure airflow ejected from the air hole, a negative pressure is formed in the circumferential direction of the air hole, and the dust around the air hole will adhere to the roller body under the action of atmospheric pressure. On the surface, the long-term operation of the air cushion roller will cause the air hole to be blocked. After the air hole is blocked, the air pressure on the surface of the air cushion roller will increase, which will cause the air roller to not work normally. After the air hole is blocked, the operator often clears the air hole from the outside, which will lead to Entering into the air flow channel, the air cushion roller will be scrapped after a long time, and there are improvements in the prior art.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide an air cushion roller of a blow molding machine. A bushing is arranged on the surface of the roller body, and a dredging part for dredging the air holes from the inside to the outside is arranged between the roller body and the bushing. , Effectively prevent foreign matter from entering the air flow channel, greatly prolonging the service life of the air cushion roller.

In order to achieve the above object, the utility model provides the following technical solution: an air cushion roller of a blow molding machine, including a roller body, an airflow channel is arranged in the center of the roller body, and an air pump is connected to the airflow channel, and the roller The surface of the body is provided with a number of first air holes, and also includes a cylindrical bush that is rotatably arranged on the side of the roller body. An interlayer is formed between the bush and the roller body. The surface of the bush is provided with several second air holes. An air hole, a dredging component for dredging the second air hole is arranged in the interlayer.

By adopting the above technical solution, after the air flow enters the air flow channel from the air pump, the air flow enters the interlayer from the first air hole and then flows out from the second air hole, forming an air cushion layer on the surface of the bush, and the plastic film can be suspended on the surface of the bush. On the air cushion layer; since the bushing is set outside, the second air hole is easy to block, and the dredging part arranged in the interlayer will dredge the foreign matter blocking the second air hole from the inside of the bushing to the outside, preventing foreign matter from entering the airflow channel, greatly The service life of the air cushion roller is extended.

The utility model is further configured as follows: the second air holes are evenly distributed along the circumference of the bush to form a second air hole group, and the second air hole group is evenly distributed along the axial direction of the bush.

By adopting the above-mentioned technical scheme, the second air hole group composed of second air holes distributed uniformly along the circumferential direction of the bushing forms a relatively uniform air cushion layer in the circumferential direction of the bushing; several second air hole groups distributed along the axial direction of the bushing The surface of the bushing forms a certain length of air cushion layer. In actual use, different types of bushings are selected according to the width of the plastic film in production. When switching to produce plastic films of different specifications, the operator only needs to replace the bushing to complete the switch. , which greatly improves the efficiency when switching production.

The utility model is further configured as follows: the dredging part includes a plurality of steel balls arranged on the surface of the roller body, the steel balls are arranged in one-to-one correspondence with the second air holes, and the steel balls are fixedly connected with an elastic member that makes the steel balls contact the inner wall of the bushing .

By adopting the above technical scheme, when dredging the second air hole, the bushing is rotated to make the steel ball clear the second air hole from the inner side of the bushing to the outside under the action of the elastic member, and the second air hole is dredged from the inner side to avoid foreign objects blocking the second air hole into the interlayer; when the air roller is working, turn the bushing so that the steel ball abuts against the inner wall of the bushing to prevent the steel ball from affecting the normal operation of the second air hole; after the second air hole is blocked, the operator only needs to turn the bushing That is to say, the steel ball can dredge the second air hole from the inside of the bush to the outside, which is convenient for the operator to dredge, greatly reduces the workload of the operator in dredging and blocking the air cushion roller, and optimizes the dredging method.

The utility model is further configured as follows: the elastic member is a spring stretching radially along the roller body, one end of the spring is fixed on the surface of the roller body, and the other end is fixedly connected with the steel ball.

By adopting the above technical scheme, the spring arranged along the radial direction of the roller body makes the steel ball expand and contract along the radial direction of the roller body, and the steel ball stretched along the radial direction of the roller body enters the second air hole vertically, and ejects the foreign matter blocking the second air hole; The spring is used as an elastic part to reduce the cost of manufacturing and subsequent maintenance of the air cushion roller.

The utility model is further configured as: the diameter of the steel ball is smaller than the diameter of the second air hole.

By adopting the above technical scheme, when the steel ball dredges the second air hole, the steel ball with a diameter smaller than the second air hole can pass through the second air hole, and all the foreign objects that block the second air hole can be pushed out. After cleaning, the operator presses the steel ball to make the steel ball enter again. In the interlayer, turn the bushing so that the steel ball abuts against the inner wall of the bushing; the steel ball that can pass through the second air hole improves the dredging effect of the second air hole, and at the same time ensures that the foreign matter that blocks the second air hole cannot enter the interlayer.

The utility model is further configured as follows: the plurality of steel balls are set in one-to-one correspondence with the second air hole group.

By adopting the above-mentioned technical scheme, the second air holes in the second air hole group are evenly distributed on the circumference of the bush, and the operator rotates the bush to make the second air holes in the second air hole group pass through the steel balls in turn, thereby reducing the number of holes on the roller body. The setting quantity of steel balls.

The utility model is further configured as: a pit for clamping and embedding steel balls is arranged between two adjacent second air holes in the second air hole group.

By adopting the above technical scheme, when the steel ball is not used, the steel ball is embedded in the pit to limit the rotation of the bushing, avoiding the rotation of the bushing under the action of the air flow during operation, and effectively avoiding the air cushion caused by the rotation of the bushing The layer fluctuates, making the air cushion layer on the surface of the air cushion roller more stable.

The utility model is further configured as follows: the two ends of the roller body extend outward along the radial direction of the roller body with an annular baffle, and the bushing is provided with a sealing groove for clamping the annular baffle corresponding to the annular baffle.

By adopting the above technical scheme, the airtightness of the interlayer is improved through the cooperation between the bush and the roller body through the cooperation between the annular baffle and the sealing groove, and the outflow of airflow from the connection between the bush and the roller body can be reduced, which can reduce the The output power of the air pump, thereby reducing energy loss.

In summary, the utility model has the following beneficial effects:

First, the steel ball can dredge the second air hole from the inner side of the second air hole, so as to prevent the foreign matter that blocks the second air hole from entering the air flow channel, effectively solving the problem of air flow channel blockage;

Second, when dredging, the steel ball can pass through the second air hole to dredge. When not in use, the steel ball can be stuck in the pit to limit the rotation of the bushing, thereby improving the stability of the air cushion layer on the surface of the air cushion roller.

Description of drawings

Figure 1 is a schematic diagram of the use state of the air cushion roller;

Figure 2 is a schematic structural diagram of the air cushion roller, which mainly reflects the structure of the roller body and the bushing;

Fig. 3 is the sectional view of air cushion roller;

Figure 4 is a schematic structural view of the bushing.

In the figure: 1, plastic film; 2, traction roller; 3, air cushion roller; 31, roller body; 32, bushing; 4, air intake pipe; 5, air pump; 6, first air hole; 7, second air hole; 8 , air flow channel; 9, interlayer; 10, annular baffle; 11, sealing groove; 12, pit; 13, dredging parts; 131, steel ball; 132, spring.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, an air cushion roller of a blow molding machine is used in the transmission and redirection of the plastic film 1 in the production process of the blow molding machine. Since the plastic film 1 is relatively soft, if ordinary driven guide rollers are used, the driven guide The friction between the roller and the plastic film 1 causes the plastic film 1 to deform under force. Therefore, traction rollers 2 of different traction directions are generally arranged on both sides of the air cushion roller 3, and the air cushion roller 3 is arranged between the two traction rollers 2, and an air cushion layer is formed on the surface of the air cushion roller 3, so that the plastic film 1 is suspended on the air cushion roller 3 surface, to avoid friction between the plastic film 1 and the air roller 3 to cause deformation of the plastic film 1 .

As shown in Figure 2 and Figure 3, the air cushion roller 3 includes a roller body 31, the center of the roller body 31 is provided with an air flow channel 8, the two ends of the roller body 31 are closed and one end of the roller body 31 is provided with an air flow channel 8 communicated air intake pipe 4, as shown in Figure 1, the air intake pipe 4 is connected with an air pump 5, a number of first air holes 6 are provided on the side of the roller body 31, and the air pump 5 inputs the compressed air into the air flow channel 8, with a certain The air flow under pressure flows out from the first air hole 6 .

The side surface of the roller body 31 is also covered with a cylindrical bushing 32, the above-mentioned bushing 32 is arranged coaxially with the roller body 31, and the bushing 32 is rotated to set the surface of the roller body 31, forming a gap between the bushing 32 and the roller body 31. There is an interlayer 9, and a second air hole 7 communicating with the interlayer 9 is provided on the side of the bush 32; an annular baffle 10 extending radially along the roller body 31 is arranged at both ends of the roller body 31, and the two ends of the bush 32 are provided with useful Fitting the sealing groove 11 of the annular baffle 10, the cooperation between the annular baffle 10 and the sealing groove 11 can improve the airtightness of the interlayer 9, so that most of the airflow in the interlayer 9 can flow out from the second air hole 7;

When the air roller 3 is in use, the plastic film 1 is sleeved on the surface of the bushing 32, and the airflow with a certain pressure flows out from the first air hole 6 and then enters the interlayer 9, and the airflow in the interlayer 9 flows out from the second air hole 7. The surface of the bushing 32 forms an air cushion layer, and the plastic film 1 is suspended on the surface of the bushing 32 under the action of the airflow.

Because in actual use, the distance between the surface of the bushing 32 and the plastic film 1 is very close, the pressure at the high-pressure airflow is relatively small, and the dust in the production site gathers near the air-cushion roller 3 under the action of atmospheric pressure, and a large amount of Dust will adhere to the surface of the bushing 32, and long-term use will cause the second air hole 7 to be blocked.

In conjunction with Fig. 2, shown in Fig. 3, be provided with in the interlayer 9 and be used for dredging the dredging member 13 of second air hole 7, dredging member 13 includes the spring 132 that is fixed on the surface of roller body 31, the stretching direction of above-mentioned spring 132 and roller The radial direction of the body 31 is the same, and the end of the spring 132 away from the roller body 31 is provided with a steel ball 131 for dredging the second air hole 7. The diameter of the steel ball 131 is smaller than the diameter of the second air hole 7, so that the steel ball 131 can be moved under the action of the spring 132. Through the second air hole 7 , during the process of dredging the second air hole 7 , the steel ball 131 dredges the second air hole 7 from the inside of the second air hole 7 to the outside, so as to prevent the foreign matter that blocks the second air hole 7 from entering the interlayer 9 .

The second air holes 7 are evenly distributed along the circumference of the bush 32 to form a second air hole group, and several second air hole groups are evenly distributed on the surface of the bush 32 along the axial direction of the bush 32. The surface of the body 31 rotates, so one steel ball 131 can be provided correspondingly for each second air hole group.

As shown in FIG. 4 , dimples 12 are provided between the adjacent second air holes 7 in the second air hole group. The dimples 12 are arranged on the inner wall of the bushing 32 . When the steel balls 131 are not used to dredge the second air holes 7 The steel ball 131 can abut against the inner wall of the bushing 32 and be embedded in the recess 12 to limit the rotation of the bushing 32, so as to prevent the bushing 32 from rotating under the action of the air flow and cause the air cushion to fluctuate.

The specific implementation process:

When the air cushion roller 3 is working, the air pump 5 will inject compressed air into the airflow channel 8, and the airflow will flow out from the second air hole 7 to form an air cushion layer on the surface of the bushing 32. The traction roller 2 is redirected under.

When clearing the second air hole 7 blocked by the bushing 32, the operator turns the bushing 32 to make the steel ball 131 in the interlayer 9 correspond to the second air hole 7, and the steel ball 131 moves outward under the action of the spring 132, which will block the second air hole. The foreign matter in the air hole 7 is pushed out. After the dredging is completed, the operator will press the steel ball 131 and turn the bushing 32 to make the steel ball 131 abut against the inner wall of the bushing 32, and then turn the bushing 32 to make the steel ball 131 fit into the pit 12. Prevent the bushing 32 from rotating under the action of air flow.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (8)

1. a kind of air cushion roller of blow moulding machine, includes roll body（31）, the roll body（31）Be provided centrally with gas channel（8）, The gas channel（8）It is connected with air pump（5）, the roll body（31）Surface offer some first stomatas（6）, its feature exists In also including and be rotatably arranged on roll body（31）Cylindrical sleeve on side（32）, the bushing（32）With roll body（31）It Between formed with interlayer（9）, the bushing（32）Surface be provided with some second stomatas（7）, the interlayer（9）Inside it is provided with use In dredging the second stomata（7）Dredging part（13）.

A kind of 2. air cushion roller of blow moulding machine according to claim 1, it is characterised in that second stomata（7）Along bushing （32）Circumference be uniformly distributed to form the second stomata group, the second stomata group is along bushing（32）Axis direction be uniformly distributed.

A kind of 3. air cushion roller of blow moulding machine according to claim 2, it is characterised in that the dredging part（13）Include It is some to be arranged on roll body（31）The steel ball on surface（131）, the steel ball（131）With the second stomata（7）Correspond and set, it is described Steel ball（131）Being fixedly connected with makes steel ball（131）Abut bushing（32）The elastic component of inwall.

4. the air cushion roller of a kind of blow moulding machine according to claim 3, it is characterised in that the elastic component is along roll body（31） The spring of radial expansion（132）, the spring（132）One end be fixed on roll body（31）Surface, the other end and steel ball（131）Gu Fixed connection.

A kind of 5. air cushion roller of blow moulding machine according to claim 4, it is characterised in that the steel ball（131）Diameter it is small In the second stomata（7）Diameter.

A kind of 6. air cushion roller of blow moulding machine according to claim 5, it is characterised in that some steel balls（131）With Two stomata groups, which correspond, to be set.

A kind of 7. air cushion roller of blow moulding machine according to claim 6, it is characterised in that second stomata（7）Two in group The second adjacent stomata（7）Between be provided with for inlay card steel ball（131）Pit（12）.

A kind of 8. air cushion roller of blow moulding machine according to claim 1, it is characterised in that the roll body（31）Both ends along roller Body（31）Extend radially outwardly and have ring baffle（10）, the bushing（32）Corresponding ring baffle（10）Offer and be used for clamping Ring baffle（10）Seal groove（11）.