Film blowing machine and herringbone clamping plate facilitating angle adjustment thereof

Abstract

The utility model discloses a film blowing machine and a herringbone clamping plate convenient for angle adjustment thereof. The herringbone clamping plate comprises a mounting frame body and two clamping plate frames, the mounting frame body is located above the two clamping plate frames, the left end and the right end of the top of each clamping plate frame are connected into vertical receding grooves in the corresponding sides of the mounting frame body through connecting shafts correspondingly, so that the top of each clamping plate frame can move up and down along the corresponding vertical receding groove, and the two clamping plate frames are obliquely arranged; the left ends and the right ends of the bottoms of the two clamping plate frames are rotationally connected with sliding block pieces, the sliding block pieces slide between the two clamping plate frames along sliding rails which are correspondingly arranged, at least one sliding block piece at the bottom of each clamping plate frame is fixedly provided with an angulometer, and the angulometer can move along with the sliding block pieces and is always kept at the measuring position of the clamping plate frames. An operator can visually observe the inclination angle of the current corresponding clamping plate frame in real time, real-time angle feedback can be obtained during adjustment, re-erection for measurement is avoided, and the angle of the herringbone clamping plate can be rapidly adjusted according to different requirements of membrane materials.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing, in particular to a film blowing machine and a herringbone splint thereof which is convenient for adjusting the angle. Background Art

[0002] A film blowing machine is an important piece of film processing equipment that heats and melts plastic particles before blowing them into thin films. It generally consists of an extruder, an air ring, a bubble stabilization mechanism, a traction mechanism, and a winding mechanism. Within the traction mechanism, the herringbone plywood typically comprises two inclined plywood frames mounted on parallel rollers. The two plywood frames form a herringbone or V-shape, hence the name "herringbone plywood." The main function of the herringbone plywood is to guide the cylindrical film bubble, blown by the air ring, upon contact with the plywood. The bubble is gradually gathered, facing the upward pressing roller and flattened into a double-layer film, ensuring the film maintains a stable path during production.

[0003] Since the film bubble keeps moving vertically upward before contacting the herringbone plywood until its path angle changes with the herringbone plywood, the angle setting between the herringbone plywood and the vertical direction will affect the effect of the film bubble being gathered so that it can be smoothly flattened into a double-layer film by the film pressing roller. However, if the angle between the herringbone plywood and the vertical direction exceeds an appropriate range, the film bubble will bend at a larger angle when contacting the herringbone plywood, causing the thinner film bubble to be impacted and blocked, thereby generating wrinkles. Therefore, according to the different specifications and characteristics of the film material, such as the diameter of the film bubble and the softness and hardness of the film material, the angle of the herringbone plywood of the film blowing machine must be adjusted according to different needs to ensure the quality of the film.

[0004] With respect to the herringbone splints of the film blowing machine in the prior art, there is a lack of a solution for quickly determining the angle of the herringbone splint so as to quickly adjust the angle to a desired range, and this needs to be improved. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a film blowing machine and a herringbone splint with an easy-to-adjust angle thereof to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] The utility model firstly provides a herringbone splint of a film blowing machine which is easy to adjust the angle. The herringbone splint comprises a mounting frame and two splint frames.

[0008] The mounting frame is located above the two plywood frames, and the mounting frame is provided with two pairs of vertical makeshift grooves, each pair of vertical makeshift grooves being arranged symmetrically on the left and right sides of the mounting frame. The two plywood frames are arranged symmetrically with each other, and the left and right ends of the top of each plywood frame are respectively connected to the vertical makeshift grooves on the corresponding sides through connecting shafts that can move up and down in the vertical makeshift grooves, so that the top of each plywood frame can move up and down along the corresponding vertical makeshift grooves, and the distance between the two plywood frames gradually increases from top to bottom, so that the two plywood frames are arranged tilted, and a plurality of rollers are arranged side by side on the plywood frame, and the left and right ends of the plurality of rollers are respectively rotatably connected to the plywood frames.

[0009] Among them, the left and right ends of the bottom of the two clamping frames are rotatably connected to sliding blocks, and the sliding blocks slide between the two clamping frames along the corresponding slide rails. At least one sliding block at the bottom of each clamping frame is fixed with a protractor, and the bottom edge of the protractor is parallel to the slide rail and is used to measure the inclination angle of the corresponding clamping frame.

[0010] Preferably, the protractor comprises a scale plate and a marking pointer rotatably connected around the scale plate, and the scale plate is in a fan shape.

[0011] Preferably, the slider is sleeved on the screw through its internal threaded hole, and the screw is connected to a drive motor, which drives the screw so that the slider can drive the bottom of the clamping plate frame to move along the slide rail.

[0012] Preferably, a T-slot is provided on the slide rail, and an end that slides in the T-slot is provided at the bottom of the slider member. The cross-section of the end of the slider member corresponds to the T-slot of the slide rail, and the ends of the slider members located at the same end on the two splint frames are embedded in the same slide rail.

[0013] Preferably, a metal sleeve is sleeved on the roller shaft, and the metal sleeve is rotatable on the roller shaft.

[0014] Preferably, a vertically penetrating passage opening is provided in the installation frame, and the two pairs of vertical relief grooves are provided on the inner wall of the passage opening.

[0015] Preferably, the slide rail is provided with a scale along its length.

[0016] The utility model also provides a film blowing machine, which comprises the aforementioned herringbone splint that is convenient for adjusting the angle.

[0017] The technical effects achieved by the technical solution of this utility model mainly include:

[0018] The angle gauge is fixed on the sliding block, and the angle gauge moves along with the sliding block, and the bottom of the clamping plate frame moves along with the sliding block along the slide rail to change the distance between the bottoms of the clamping plate frames, and then the inclination angle of the clamping plate frame is adjusted to the required clamping angle range, since the angle gauge is always maintained at the measurement position of the clamping plate frame, the operator can directly observe the inclination angle of the current clamping plate frame in real time, and the angle feedback is obtained in real time while adjusting, and it is not necessary to re-erect the measurement tool after adjusting, the above structure is convenient for angle adjustment, high in operation efficiency, and different from the specifications and characteristics of the film material, the optimal clamping angle range of the herringbone clamping plate of the film blowing machine can be quickly adjusted, and the quality of film forming is guaranteed.

[0019] The herringbone clamping plate has simple structure, convenient configuration and low cost, and is favorable for scale operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structure diagram of the herringbone clamping plate of the film blowing machine is provided.

[0021] Figure 2 An assembly and disassembly diagram of the sliding block and the angle gauge in the herringbone clamping plate is provided.

[0022] Figure 3 A local enlarged view of the circular dashed line frame area A in Figure 1

[0023] The various reference signs in the above drawings are as follows:

[0024] The mounting frame body 1, the vertical displacement slot 10, the connecting shaft 11 and the passage opening 100.

[0025] The clamping plate frame 2 and the roller shaft 21.

[0026] The sliding block 3 and the end 31.

[0027] The slide rail 4 and the T-shaped slot 40.

[0028] The angle gauge 5, the scale disc 51 and the indicating pointer 52.

[0029] The screw rod 61 and the driving motor 62. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the specific embodiments of the present application will be described in detail below with reference to the drawings. The examples of these preferred embodiments are illustrated in the drawings. The embodiments of the present application shown in the drawings and described according to the drawings are merely exemplary, and the present application is not limited to these embodiments.

[0031] ​In order to avoid obscuring the present invention due to unnecessary details, the drawings only show structures and / or processing steps closely related to the solutions according to the present invention, while other less relevant details are omitted. Figure 2 The arc curve in ⊂ represents the omission of the extended portion of the slide rail 4.

[0032] like Figure 1 As shown, an embodiment of the present invention provides a herringbone splint for a film blowing machine that is easy to adjust the angle, which includes a mounting frame 1 and two splint frames 2.

[0033] The mounting frame 1 is located above the two plywood frames 2, and the mounting frame 1 is provided with two pairs of vertical make way slots 10. In each pair of vertical make way slots 10, one vertical make way slot 10 is arranged on the left side of the mounting frame 1, and the other vertical make way slot 10 is arranged at a symmetrical position on the right side of the mounting frame 1. Therefore, the two plywood frames 2 are arranged symmetrically with each other, and the left and right ends of the top of each plywood frame 2 are respectively connected to the vertical make way slot 10 on the corresponding side through a connecting shaft 11 that can move up and down in the vertical make way slot 10, so that the top of each plywood frame 2 can move up and down along the corresponding vertical make way slot 10, and the distance between the two plywood frames 2 gradually increases from top to bottom, so that the two plywood frames 2 are tilted, and a plurality of rollers 21 are arranged in parallel on the plywood frame 2, and the left and right ends of the plurality of rollers 21 are respectively rotatably connected to the plywood frame 2.

[0034] Among them, combined Figure 2 and Figure 3 As shown, the left and right ends of the bottom of the two clamping frames 2 are rotatably connected to slider members 3, and the slider members 3 slide between the two clamping frames 2 along the corresponding slide rails 4. At least one slider member 3 at the bottom of each clamping frame 2 is fixed with a protractor 5, and the bottom edge of the protractor 5 is parallel to the slide rail 4, which is used to measure the inclination angle of the corresponding clamping frame 2.

[0035] When the above-mentioned herringbone clamp is used, according to the optimal clamping angle range required by the herringbone clamp of the film blowing machine, the distance between the bottoms of the two clamp frames 2 can be changed by moving the bottoms of the clamp frames 2 along the slide rails 4, and the translation of the bottoms of the clamp frames 2 is accommodated in the vertical accommodation slots 10 in the tops of the clamp frames 2, so as to adjust the inclination angle of the clamp frames 2 to the required clamping angle range. Since the protractor 5 is fixed on the slide block 3, the protractor 5 moves along with the slide block 3, and the protractor 5 is always maintained at the measurement position of the clamp frames 2. Therefore, the operator can directly and intuitively observe the current inclination angle of the clamp frames 2 in real time, and can obtain real-time angle feedback during adjustment, without the need to re-erect the measurement tool after moving the bottom of the clamp frame 2 each time. The use method is simple, the angle adjustment is convenient, the work efficiency is improved, and the quality of film forming is guaranteed.

[0036] In addition, the herringbone clamp has simple structure, convenient configuration, low cost, and is suitable for large-scale use.

[0037] In order to facilitate the observation of the operator, the protractor 5 comprises a scale disc 51 and a marker pointer 52 rotationally connected to the scale disc 51. The marker pointer 52 is rotationally connected to the scale disc 51, and the length direction of the clamp frame 2 to be measured is leveled with the marker pointer 52, so as to play a clear marking role and assist observation. The scale disc 51 is in the shape of a sector, and the angle range covered by the scale disc 51 is set according to the required angle change range of the clamp frame 2.

[0038] Specifically, the slide block 3 is sleeved on the screw rod 61 through the internal threaded hole formed in the slide block 3, the screw rod 61 is connected with a driving motor 62, the driving motor 62 drives the screw rod 61 to drive the slide block 3 to move the bottom of the clamp frame 2 along the slide rail 4, which is equivalent to the working mode of a lead screw. If the angles of the two clamp frames 2 need to be changed synchronously, two screw rods 61 connected with each other and having opposite threaded directions can be provided, and the same driving motor 62 can be used to drive the two screw rods 61.

[0039] In order to make the movement of the slide block 3 along the slide rail 4 more stable, one is to limit the slide block 3 through the screw rod 61, so that the slide block 3 moves along the horizontal direction between the two clamp frames 2 in a predetermined track, and the other is that a T-shaped slot 40 is formed in the slide rail 4, the bottom of the slide block 3 is provided with an end 31 sliding in the T-shaped slot 40, the cross section of the end 31 of the slide block 3 corresponds to the T-shaped slot 40 of the slide rail 4, and the ends 31 of the slide blocks 3 at the same end of the two clamp frames 2 are embedded in the same slide rail 4.

[0040] Furthermore, a metal sleeve is provided on the roller 21, and the metal sleeve is rotatable on the roller 21, so that the film bubble generated by the film blowing machine contacts the metal sleeve of the roller 21 and is guided to move in a rolling manner, thereby reducing friction. In addition, the metal sleeve can guide electric charges, reduce the influence of static electricity on the film bubble, and further avoid wrinkles in the film bubble.

[0041] In this embodiment, since the length of the plywood frame 2 itself is fixed, when the bottom of the plywood frame 2 moves, the top connection area of ​​the plywood frame 2 needs to have corresponding space to make way for its movement. The installation frame 1 is provided with a passage opening 100 that passes through from top to bottom, and the installation frame 1 is provided with the two pairs of vertical making way grooves 10 on the inner wall of the passage opening 100.

[0042] In addition to direct measurement of the tilt angle, it is also beneficial for adjusting the angle if the operator can determine the bottom movement distance and position of the clamping frame 2 in real time. Therefore, in this embodiment, the slide rail 4 is provided with a scale along its length.

[0043] The embodiment of the present invention further provides a film blowing machine, which includes the aforementioned herringbone splint that is convenient for adjusting the angle.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0045] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A herringbone splint for a film blowing machine that is easy to adjust the angle, characterized in that: It includes a mounting frame (1) and two clamping plate frames (2), The installation frame (1) is located above the two clamping frames (2), and the installation frame (1) is provided with two pairs of vertical clearance grooves (10), each pair of vertical clearance grooves (10) is arranged symmetrically on the left and right sides of the installation frame (1), and the two clamping frames (2) are arranged symmetrically with each other, and the left and right ends of the top of each clamping frame (2) are respectively connected to the vertical clearance groove (10) on the corresponding side through a connecting shaft (11) that can move up and down in the vertical clearance groove (10), so that the top of each clamping frame (2) can move up and down along the corresponding vertical clearance groove (10), and the distance between the two clamping frames (2) gradually increases from top to bottom, so that the two clamping frames (2) are inclined. A plurality of rollers (21) are arranged in parallel on the clamping frame (2), and the left and right ends of the plurality of rollers (21) are respectively rotatably connected to the clamping frame (2). The left and right ends of the bottoms of the two clamping frames (2) are rotatably connected to sliders (3), and the sliders (3) slide along corresponding slide rails (4) between the two clamping frames (2). A protractor (5) is fixed on at least one slider (3) at the bottom of each clamping frame (2), and the bottom edge of the protractor (5) is parallel to the slide rail (4) and is used to measure the inclination angle of the corresponding clamping frame (2).

2. The herringbone splint with easy angle adjustment according to claim 1, characterized in that: The protractor (5) comprises a scale plate (51) and a marking pointer (52) rotatably connected around the scale plate (51), and the scale plate (51) is in a fan shape.

3. The herringbone splint with easy angle adjustment according to claim 1, characterized in that: The slider member (3) is sleeved on the screw rod (61) through the internal threaded hole provided therein, and the screw rod (61) is connected to a driving motor (62). The driving motor (62) drives the screw rod (61) so that the slider member (3) can drive the bottom of the clamping plate frame (2) to move along the slide rail (4).

4. The herringbone splint with easy angle adjustment according to claim 1, characterized in that: A T-slot (40) is provided on the slide rail (4), and an end (31) is provided at the bottom of the slider member (3) for sliding in the T-slot (40). The cross section of the end (31) of the slider member (3) corresponds to the T-slot (40) of the slide rail (4), and the ends (31) of the slider members (3) at the same end on the two clamping plate frames (2) are embedded in the same slide rail (4).

5. The herringbone splint with easy angle adjustment according to claim 1, characterized in that: A metal sleeve is sleeved on the roller shaft (21), and the metal sleeve is rotatable on the roller shaft (21).

6. The herringbone splint with easy angle adjustment according to claim 1, characterized in that: The installation frame (1) is provided with a vertically penetrating passage opening (100), and the installation frame (1) is provided with two pairs of vertical relief grooves (10) on the inner wall of the passage opening (100).

7. The herringbone splint with easy angle adjustment according to claim 1, characterized in that: The slide rail (4) is provided with a scale along its length direction.

8. A film blowing machine, characterized in that: The invention comprises the herringbone splint with easy angle adjustment as claimed in any one of claims 1 to 7.

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