CN215791724U - Bubble protection structure of plastic film blowing equipment - Google Patents
Bubble protection structure of plastic film blowing equipment Download PDFInfo
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- CN215791724U CN215791724U CN202121759269.XU CN202121759269U CN215791724U CN 215791724 U CN215791724 U CN 215791724U CN 202121759269 U CN202121759269 U CN 202121759269U CN 215791724 U CN215791724 U CN 215791724U
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Abstract
A film bubble protection structure of plastic film blowing equipment is characterized in that film protection plates are respectively arranged on the left side and the right side of a film bubble operation channel and are respectively provided with a film protection plate support; the protective film plate support is connected with a sliding block; the film protecting plate is divided into an upper film protecting plate section and a lower film protecting plate section, a supporting rod is connected between the upper film protecting plate section and the corresponding slide block, the lower end of the supporting rod is connected with a supporting rod support, and the supporting rod support is installed on the slide block on the corresponding side; the upper section of the protective film plate is hinged with the lower section of the protective film plate by a hinge shaft which extends longitudinally, the lower section of the protective film plate is fixedly connected with the corresponding protective film plate support, and the protective film plate support is rotatably connected with the corresponding slide block; the protective film plate support on each side is further fixedly connected with a first swing arm, the swing end of the first swing arm is connected with a first roller, and the first roller is provided with a first transverse clamping groove with an inclination in a matched mode. In the process of adjusting the transverse position of the film protection plate, the included angle between the upper section of the film protection plate and the lower section of the film protection plate can be changed.
Description
Technical Field
The utility model belongs to the technical field of plastic film production equipment, and particularly relates to a bubble protection structure of plastic film blowing equipment.
Background
The plastic film may be produced by a plastic film blowing apparatus. The film blowing equipment is provided with an extrusion die head, the extrusion die head is provided with a circular ring-shaped extrusion opening, a herringbone clamping plate is arranged above the extrusion die head, the herringbone clamping plate is formed by a front clamping plate and a rear clamping plate into a herringbone shape, and a film bubble operation channel is formed between the front clamping plate and the rear clamping plate. During production, the high-temperature molten resin material is extruded from a circular extrusion port of the extrusion die head to form a circular film bubble, the circular film bubble upwards runs through a film bubble running channel of the herringbone clamping plate to be gradually flattened, and finally the circular film bubble is compacted by a traction clamping roller to form a double-layer flaky film.
The herringbone clamping plate plays a role in protecting the film bubble from the front and back directions. But the conventional plastic film blowing equipment still cannot protect the film bubble from the left and right directions. Therefore, the left side and the right side of a bubble operation channel of partial plastic film blowing equipment are respectively provided with a film protection plate, the film protection plate on each side of the left side and the right side is respectively provided with an upper film protection roller and a lower film protection roller, the extending direction of each film protection roller is longitudinal, and the length of each film protection roller is gradually reduced from bottom to top. Thus, the protective film plates on the left and right sides can protect the film bubble from the left and right directions. Obviously, when the diameter of the bubble is changed, the transverse position of the film protection plate needs to be adjusted and changed.
However, the above-mentioned existing plastic film blowing apparatus still has the following problems:
firstly, the transverse position of the protective film plate is inconvenient to adjust; in the process of adjusting the transverse position of the pellicle plate, the posture of the pellicle plate is unchanged, but the shape of the edge of the pellicle plate changes, specifically, in fig. 1, the pellicle 8 is flattened by the herringbone clamping plate from the vertical position of the point C, reaches the traction clamping roller from the vertical position of the point a, and is completely flattened into a double-layer thin film, in the process of adjusting and changing the diameter of the pellicle plate, the vertical distance of the AC is unchanged (i.e., the AD distance in fig. 1 is unchanged), and the transverse distance of the AC is changed (i.e., the DC distance in fig. 1 is changed), so that the shape of the edge of the pellicle plate (i.e., the arc ABC in fig. 1) changes, and the curvature of the arc ABC in fig. 1 increases with the increase of the diameter of the pellicle plate, but in the process of adjusting the transverse position of the existing pellicle plate, the posture of the pellicle plate is unchanged, and therefore cannot adapt to the shape change of the edge of the pellicle plate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and provide a bubble protection structure of plastic film blowing equipment, which can adapt to the change of the edge form of a bubble in the process of adjusting the transverse position of a film protection plate.
The purpose can be realized according to the following scheme: a bubble protection structure of plastic film blowing equipment comprises a frame and herringbone clamping plates, wherein each herringbone clamping plate comprises a front clamping plate and a rear clamping plate which form a herringbone; a film bubble running channel is formed between the front clamping plate and the rear clamping plate, film protection plates are respectively arranged on the left side and the right side of the film bubble running channel, an upper film protection roller and a lower film protection roller are respectively arranged on the film protection plate on each of the left side and the right side, the extending direction of each film protection roller is longitudinal, and the length of each film protection roller is gradually reduced from bottom to top; the protective film plate on each of the left side and the right side is respectively provided with a protective film plate support;
the protective film plate support is characterized in that the protective film plate support at each of the left side and the right side is respectively connected with a sliding block, and the sliding blocks can be transversely and slidably arranged on a transverse sliding rail;
the protective film plate on each of the left side and the right side is divided into an upper protective film plate section and a lower protective film plate section, a supporting rod is connected between the upper protective film plate section and the corresponding slide block, the supporting rod is positioned on the outer side of the protective film plate, the upper end of the supporting rod is hinged with the upper protective film plate section, the lower end of the supporting rod is connected with a supporting rod support, and the supporting rod support is installed on the slide block on the corresponding side;
the upper section of the film protection plate and the lower section of the film protection plate are hinged by a hinge shaft extending longitudinally, the lower section of the film protection plate is fixedly connected with the corresponding film protection plate support, and the film protection plate support and the corresponding slide block are rotatably connected by a first rotating shaft extending longitudinally;
the protective film plate support at each side is also fixedly connected with a first swing arm, the swing end of the first swing arm is connected with a first roller, the axial direction of the first roller is longitudinal, the first roller is matched with a first transverse clamping groove with inclination, and the first roller is positioned in the first transverse clamping groove and moves along the first transverse clamping groove; the inclined direction of the first transverse clamping groove is that the inner side is high and the outer side is low; seen from the longitudinal projection position, the longitudinal projection position of the first roller is positioned below the inner side of the first rotating shaft.
The support rods are fixedly connected with corresponding support rod supports, and the support rod supports and the corresponding sliding blocks are in rotatable connection by utilizing a second rotating shaft extending longitudinally; the support rod support of each side is also fixedly connected with a second swing arm, the swing end of the second swing arm is connected with a second roller, the second roller is vertical in axial direction, a second transverse clamping groove is formed in the second roller of each side in a matched mode, and the second roller is located in the second transverse clamping groove and moves along the second transverse clamping groove.
The second transverse clamping groove has a gradient with a high outer side and a low inner side; the longitudinal projection position of the second roller is positioned below the inner side of the second rotating shaft when viewed from the longitudinal projection position.
The horizontal transmission chain is provided with an upper chain half section and a lower chain half section; in the upper chain half section and the lower chain half section, one of the two is connected with the slide block corresponding to the film protection plate support on the left side, and the other is connected with the slide block corresponding to the film protection plate support on the right side.
The frame is also provided with a clamping plate base and a fixed circular guide rail, the circle center of the circular guide rail is positioned on the central axis of the bubble operation channel, and the central axis is called as a vertical central axis; the herringbone clamping plate is arranged on the clamping plate base, the clamping plate base can be arranged on the circular guide rail in a rotating mode around the vertical central axis, four sliding seats are arranged at the bottom of the clamping plate base, and the sliding seats are arranged on the circular guide rail and can move along the circular guide rail; the sliding block, the transverse sliding rail and the transverse transmission chain are also installed on the clamping plate base and rotate around the vertical central axis along with the clamping plate base.
The length of the supporting rod is adjustable.
In this document, when defining the left-right front-back direction, the two splints of the herringbone splints are in the front-back direction relative to the bubble, the front-back direction is the longitudinal direction, and the horizontal direction perpendicular to the front-back direction is the transverse direction.
In the present document, the term outside means the side which is relatively far away from the central axis of the bubble movement channel in the transverse direction; by inboard is meant the side which is relatively close to the central axis of the travelling passage of the bubble in the transverse direction.
The utility model has the following advantages and effects:
the utility model provides an, in-process adjusting and protecting the diaphragm plate lateral position, the contained angle between protecting diaphragm plate upper segment and the protecting diaphragm plate hypomere can change, and along with the protecting diaphragm plate removes toward the outside, the contained angle between protecting diaphragm plate upper segment and the protecting diaphragm plate hypomere grow gradually, therefore whole protecting diaphragm plate has adapted to the change law of "its marginal radian grow of membrane bubble diameter grow" to be favorable to making the protecting diaphragm plate exert the function of protecting the membrane bubble better, right steady membrane bubble.
When the transverse position of the film protection plate is adjusted, the left and right film protection plates can simultaneously, symmetrically and equivalently transversely move only by driving the transverse transmission chain to rotate, so that the two film protection plates can be adjusted simultaneously, symmetrically and equivalently, the left and right film protection plates are ensured to be symmetrical about the central axis of the film bubble operation channel in the adjusting process, and the adjustment is convenient, fast and accurate.
When the herringbone clamping plate needs to rotationally pull the film bubble, the herringbone clamping plate and the two film protection plates are arranged on the circular guide rail, so that the central axis positions of the herringbone clamping plate and the two film protection plates are always kept unchanged in the rotating process of the herringbone clamping plate and the two film protection plates, and the central axes of the herringbone clamping plate and the two film protection plates are always kept coincident with the central axis of the film bubble.
Drawings
FIG. 1 is a schematic representation of the morphological change of a bubble during collapsing.
Fig. 2 is a schematic overall perspective structure of an embodiment of the present invention.
Fig. 3 is a side view of the structure shown in fig. 2.
Fig. 4 is a schematic front view of the structure shown in fig. 2.
Fig. 5 is a schematic view of an adjusting structure for adjusting the lateral position of the protective film plate in fig. 2.
Fig. 6 is a partial schematic view of fig. 5.
Fig. 7 is another partial schematic view of fig. 5.
Fig. 8 is a schematic view showing a state of change of the structure shown in fig. 5 after adjusting the transverse position of the membrane-protecting plate.
Fig. 9 is a perspective view of the circular guide rail of fig. 2 with four sliding blocks at the bottom of the cleat base.
Fig. 10 is a schematic top view of the structure shown in fig. 9.
Detailed Description
Fig. 2, 4, 3, 5, and 6 show a bubble protection structure for a plastic film blowing apparatus, which includes a frame and a herringbone clamping plate, the herringbone clamping plate includes a front clamping plate and a rear clamping plate 2 forming a herringbone shape, a bubble operation channel is formed between the front clamping plate and the rear clamping plate 2, film protection plates 1 are respectively disposed on the left and right sides of the bubble operation channel, a plurality of upper and lower film protection rollers 14 are respectively disposed on the film protection plate 1 on each of the left and right sides, the extending direction of each film protection roller 14 is longitudinal, and the length of each film protection roller 14 is gradually reduced from bottom to top; the protective film plate 1 on each side of the left side and the right side is respectively provided with a protective film plate support 10; the protective film plate support 10 on each of the left side and the right side is respectively connected with a slide block 5, and the slide block 5 can be transversely and slidably arranged on a transverse slide rail 50;
as shown in fig. 5, 6, 7, 2, 3 and 4, the pellicle plate 1 on each of the left and right sides is divided into a pellicle plate upper section 11 and a pellicle plate lower section 12, a support rod 3 is connected between the pellicle plate upper section 11 and the corresponding slider 5, the support rod 3 is located outside the pellicle plate 1, the upper end of the support rod 3 is hinged to the pellicle plate upper section 11, the lower end of the support rod 3 is connected to a support rod support 30, and the support rod support 30 is mounted on the slider 5 on the corresponding side; the length of the supporting rod 3 is adjustable; the upper protective film plate section 11 and the lower protective film plate section 12 are hinged by a hinge shaft 13 extending in the longitudinal direction, the lower protective film plate section 12 is fixedly connected with the corresponding protective film plate support 10, and the protective film plate support 10 and the corresponding slide block 5 are rotatably connected by a first rotating shaft 91 extending in the longitudinal direction; the protective film plate support 10 on each side is also fixedly connected with a first swing arm 61, the swing end of the first swing arm 61 is connected with a first roller 71, the axial direction of the first roller 71 is longitudinal, the first roller 71 is matched with a first transverse clamping groove 81 with inclination, and the first roller 71 is positioned in the first transverse clamping groove 81 and moves along the first transverse clamping groove 81; the first horizontal pinching groove 81 is inclined in a direction that the inside is high and the outside is low; the longitudinal projection position of the first roller 71 is located below the inner side of the first rotating shaft 91 when viewed from the longitudinal projection position; the support rods 3 are fixedly connected with the corresponding support rod supports 30, and the support rod supports 30 are rotatably connected with the corresponding slide blocks 5 by using second rotating shafts 92 extending longitudinally; the support rod support 30 on each side is further fixedly connected with a second swing arm 62, the swing end of the second swing arm 62 is connected with a second roller 72, the axial direction of the second roller 72 is longitudinal, the second roller 72 on each side is provided with a second transverse clamping groove 82 in a matching manner, the second roller 72 is located in the second transverse clamping groove 82 and moves along the second transverse clamping groove 82, and the second transverse clamping groove 82 has an inclination that is higher at the outer side and lower at the inner side. The adjusting structures of the protective film plates on the left side and the right side form a left-right symmetrical relation.
As shown in fig. 5, 6 and 7, a transverse transmission chain 4 is further provided, and the transverse transmission chain 4 is provided with an upper chain half section 41 and a lower chain half section 42; the upper chain half 41 is connected to the slider 5 corresponding to the left pellicle plate holder, and the lower chain half 42 is connected to the slider 5 corresponding to the right pellicle plate holder.
As shown in fig. 2, 4 and 3, the frame is further provided with a clamping plate base 21 and a fixed circular guide rail 22, the center of the circular guide rail 22 is located on the central axis of the bubble moving channel, and the central axis is called as a vertical central axis; the herringbone clamping plate 1 is installed on a clamping plate base 21, the clamping plate base 21 can be installed on a circular guide rail 22 in a rotating mode around a vertical central axis, four sliding seats 20 are arranged at the bottom of the clamping plate base 21, and the sliding seats 20 are installed on the circular guide rail 22 and can move along the circular guide rail 22; the slide block 5, the transverse slide rail 50 and the transverse transmission chain 4 are also mounted on the clamping plate base and rotate around a vertical central axis along with the clamping plate base.
The conditioning process of the above embodiment is as follows:
when the diameter of the bubble needs to be adjusted to be larger, the transverse transmission chain 4 is started to rotate, because the moving directions of the upper half section and the lower half section are opposite when each chain rotates, the moving directions of the sliders 5 on the left side and the right side are opposite, the moving distances are equal, and the sliders 5 move outwards, the corresponding support rod 3, the support rod support 30, the protective film plate support 10, the first swing arm 61, the first roller 71, the second swing arm 62, the second roller 72, the upper protective film plate section 11 and the lower protective film plate section 12 move transversely and outwards, and in the transverse moving process of the first roller 71 and the second roller 72, because the inclined direction of the first transverse clamping groove 81 is that the inner side is high and the outer side is low, and the second transverse clamping groove 82 has an inclination that the outer side is high and the inner side is low, when the first roller 71 moves outwards, the vertical position of the first roller 71 is lower, so that the swinging end of the first swing arm 61 swings downwards, the lower section 12 of the pellicle plate swings inwards around the hinge shaft 13, and meanwhile, when the second roller 72 moves outwards, the vertical position of the second roller 72 is higher, so that the swinging end of the second swinging arm 62 swings upwards, the upper end of the supporting rod 3 swings outwards, and the hinge point of the supporting rod 3 and the upper section 11 of the pellicle plate also swings outwards; the two factors are combined, so that the bending degree between the upper section 11 of the film protection plate and the lower section 12 of the film protection plate is increased, and the state shown in fig. 5 is changed into the state shown in fig. 8 after being adjusted, so that the change rule that the edge bending degree is larger when the diameter of the film bubble is larger is met, that is, the film protection plate 1 is kept close to the edge of the film bubble, and the functions of protecting the film bubble and stabilizing the film bubble are better exerted by the film protection plate 1. When the bubble diameter needs to be adjusted to be smaller, the adjustment action is opposite to the above process, for example, the adjustment action is changed from the state shown in fig. 8 to the state shown in fig. 5.
Claims (6)
1. A bubble protection structure of plastic film blowing equipment comprises a frame and herringbone clamping plates, wherein each herringbone clamping plate comprises a front clamping plate and a rear clamping plate which form a herringbone; a film bubble running channel is formed between the front clamping plate and the rear clamping plate, film protection plates are respectively arranged on the left side and the right side of the film bubble running channel, an upper film protection roller and a lower film protection roller are respectively arranged on the film protection plate on each of the left side and the right side, the extending direction of each film protection roller is longitudinal, and the length of each film protection roller is gradually reduced from bottom to top; the protective film plate on each of the left side and the right side is respectively provided with a protective film plate support;
the protective film plate support at each side of the left and right sides is respectively connected with a sliding block which can be transversely and slidably arranged on a transverse sliding rail; the protective film plate on each of the left side and the right side is divided into an upper protective film plate section and a lower protective film plate section, a supporting rod is connected between the upper protective film plate section and the corresponding slide block, the supporting rod is positioned on the outer side of the protective film plate, the upper end of the supporting rod is hinged with the upper protective film plate section, the lower end of the supporting rod is connected with a supporting rod support, and the supporting rod support is installed on the slide block on the corresponding side;
the upper section of the film protection plate and the lower section of the film protection plate are hinged by a hinge shaft extending longitudinally, the lower section of the film protection plate is fixedly connected with the corresponding film protection plate support, and the film protection plate support and the corresponding slide block are rotatably connected by a first rotating shaft extending longitudinally;
the protective film plate support at each side is also fixedly connected with a first swing arm, the swing end of the first swing arm is connected with a first roller, the axial direction of the first roller is longitudinal, the first roller is matched with a first transverse clamping groove with inclination, and the first roller is positioned in the first transverse clamping groove and moves along the first transverse clamping groove; the inclined direction of the first transverse clamping groove is that the inner side is high and the outer side is low; seen from the longitudinal projection position, the longitudinal projection position of the first roller is positioned below the inner side of the first rotating shaft.
2. The bubble protection structure of plastic film blowing equipment according to claim 1, wherein the support bars are fixedly connected with corresponding support bar supports, and the support bar supports and the corresponding slide blocks form a rotatable connection by using a longitudinally extending second rotating shaft; the support rod support of each side is also fixedly connected with a second swing arm, the swing end of the second swing arm is connected with a second roller, the second roller is vertical in axial direction, a second transverse clamping groove is formed in the second roller of each side in a matched mode, and the second roller is located in the second transverse clamping groove and moves along the second transverse clamping groove.
3. The bubble protection structure of a plastic film blowing apparatus according to claim 1, wherein the second horizontal clipping groove has a slope with a high outside and a low inside; the longitudinal projection position of the second roller is positioned below the inner side of the second rotating shaft when viewed from the longitudinal projection position.
4. The film bubble protection structure of the plastic film blowing equipment according to claim 1, 2 or 3, characterized in that a transverse transmission chain is further provided, the transverse transmission chain is provided with an upper chain half section and a lower chain half section; in the upper chain half section and the lower chain half section, one of the two is connected with the slide block corresponding to the film protection plate support on the left side, and the other is connected with the slide block corresponding to the film protection plate support on the right side.
5. The film bubble protection structure of the plastic film blowing equipment according to claim 1, 2 or 3, wherein the rack is further provided with a clamping plate base and a fixed circular guide rail, the center of the circular guide rail is positioned on the central axis of the film bubble running channel, and the central axis is called as a vertical central axis; the herringbone clamping plate is arranged on the clamping plate base, the clamping plate base can be arranged on the circular guide rail in a rotating mode around the vertical central axis, four sliding seats are arranged at the bottom of the clamping plate base, and the sliding seats are arranged on the circular guide rail and can move along the circular guide rail; the sliding block, the transverse sliding rail and the transverse transmission chain are also installed on the clamping plate base and rotate around the vertical central axis along with the clamping plate base.
6. The film bubble protection structure of plastic film blowing equipment according to claim 1, 2 or 3, wherein the length of the supporting rod is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759269.XU CN215791724U (en) | 2021-07-30 | 2021-07-30 | Bubble protection structure of plastic film blowing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759269.XU CN215791724U (en) | 2021-07-30 | 2021-07-30 | Bubble protection structure of plastic film blowing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215791724U true CN215791724U (en) | 2022-02-11 |
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ID=80126845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121759269.XU Active CN215791724U (en) | 2021-07-30 | 2021-07-30 | Bubble protection structure of plastic film blowing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215791724U (en) |
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2021
- 2021-07-30 CN CN202121759269.XU patent/CN215791724U/en active Active
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