Herringbone clamping plate of film blowing machine

Abstract

The utility model discloses a herringbone clamping plate of a film blowing machine, which comprises a support frame and two clamping plate frames, a hinge part is arranged between the bottoms of the two clamping plate frames, the hinge part comprises a hinge pin and two hinge lug rods rotating around the hinge pin, and the two hinge lug rods are rotationally connected to the bottoms of the two clamping plate frames in a one-to-one correspondence manner. The hinge pin is connected to a gear moving in the rack plate and used for moving up and down along the rack plate, driving the two hinge lug rods to rotate synchronously and changing the distance between the bottoms of the two clamping plate frames, and therefore the included angle of the clamping plate frames can be adjusted according to the membrane material characteristics and technological requirements. According to the herringbone clamping plate, the directions of the clamping plate frames can be adjusted in the mode that herringbone clamping plate components do not need to be disassembled and reassembled, the two clamping plate frames can be rapidly and synchronously adjusted, the operation efficiency is improved, the rack plate limits the single-step stroke of the hinge pin, and therefore the clamping plate frames can be conveniently and rapidly adjusted. The range of the included angle can be accurately adjusted, the structure is simple, and the building cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to a herringbone splint for film blowing machines. Background Art

[0002] The film blowing machine is an important film processing equipment, which can heat and melt plastic particles and then blow them into films. It generally includes an extrusion mechanism, an air ring mechanism, a bubble stabilizing mechanism, a traction mechanism, and a winding mechanism, etc. Among them, in the traction mechanism, the herringbone splint usually includes two splint frames arranged tilted toward each other, and the splint frames are provided with multiple rollers arranged in parallel. The two splint frames are formed into a herringbone shape or a V shape, so it is generally called a herringbone splint. The main function of the herringbone splint is that the film bubble blown by the air ring mechanism will be guided in the direction of the film when passing through the herringbone splint, and the film bubble is gradually gathered to face the film roller at the rear and is flattened into a double-layer film, ensuring that the film maintains a stable path during the production process.

[0003] According to the characteristics and process requirements of the film material, the angle of the herringbone splint of the film blowing machine needs to be adjusted. If the herringbone splint is disassembled and reassembled for adjustment, it is difficult to ensure that the required angle range is achieved, and it will take a lot of time to disassemble and assemble. The two splints are disassembled and assembled separately, and they cannot cooperate with each other synchronously, which easily causes the two splint frames to be asymmetrical and the path guide of the herringbone splint is offset. Therefore, it is necessary to propose a simple angle adjustment structure for the herringbone splint, so that the operator can adjust the angle of the herringbone splint more efficiently and solve the above problems. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a herringbone splint for a film blowing machine to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a herringbone splint of a film blowing machine, which comprises a support frame and two splint frames. The support frame comprises a column, a side rail straddling between the two columns, and a top crossbeam connecting the tops of the columns, the two splint frames are mutually oppositely arranged inside the support frame, the spacing between the two splint frames gradually decreases from the bottom to the top of the support frame, a plurality of rollers are arranged side by side on the splint frame, the two ends of the plurality of rollers are respectively rotatably connected to the splint frames, and the top two sides of the splint frames are respectively connected to the top crossbeam of the support frame.

[0007] Among them, a hinge part is arranged between the bottoms of the two plywood frames, and the hinge part includes a hinge pin and two hinge ear rods rotating around the hinge pin, and the two hinge ear rods are rotatably connected to the bottoms of the two plywood frames one by one, and a rack plate extending vertically from the bottom to the top of the support frame is fixedly arranged on the side rail, and the hinge pin is connected to the gear moving in the rack plate, and is used to move up and down along the rack plate, driving the two hinge ear rods to rotate synchronously, changing the distance between the bottoms of the two plywood frames to adjust the angle between the two plywood frames, and a gear locking knob is provided on the rack plate for locking the fixed gear and the hinge pin.

[0008] Preferably, a lifting rod penetrating the gear is formed on the hinge pin, and the lifting rod is fixedly connected to the output shaft of the driving motor to drive the gear and the hinge pin to move up and down under the drive of the driving motor.

[0009] Preferably, the lifting rod extends toward the side of the rack plate to form a fixed handle, and the gear locking knob is inserted into the fixed handle by a screw and can be fixed with the rack plate to allow the gear and the hinge pin to suspend at the current position.

[0010] Preferably, a scale extending along the travel direction of the rack plate is provided on one side of the rack plate.

[0011] Preferably, there are two hinge parts, which are respectively located at the two ends of the roller, and a connecting rod is fixed between the opposite hinge ear rods in the two hinge parts to keep the travel of the two hinge parts synchronized.

[0012] Preferably, the hinge ear rod and the connecting rod are plastic rods sleeved with shaft sleeves.

[0013] Preferably, an angle measuring disc is provided on the hinge pin.

[0014] Preferably, transverse grooves are provided on the top beams on both sides of the support frame, and sliders that can slide transversely along the grooves are installed in the transverse grooves. The top sides of the splint frame are respectively connected to the sliders in the corresponding transverse grooves, so that the top of the splint frame can move with the sliders.

[0015] Preferably, a clearance groove corresponding to the transverse groove is opened above the top crossbeam, and a slider locking knob passing through the clearance groove is connected to the slider for locking and fixing the slider.

[0016] The technical effects achieved by the technical solution of the utility model mainly include:

[0017] The herringbone splint of the film blowing machine provided by the embodiment of the utility model can change the opening angle of the two hinge ear rods by controlling the hinge pin to move up and down along the rack plate with the gear according to the characteristics and process requirements of the film material. The bottom of the two splint frames are connected with the hinge ear rods to change the distance between each other, thereby realizing the adjustment of the angle between the two splint frames. It does not need to disassemble and reinstall the herringbone splint parts to adjust the direction of each splint frame, which saves adjustment time, improves work efficiency, and has strong adaptability.

[0018] The two clamping plate racks can be adjusted synchronously under the action of the hinge part located in the center, which can maintain symmetrical displacement, ensure the path guidance of the herringbone clamping plate to the film bubble, stably gather it into a thin film, and ensure the film quality;

[0019] The rack plate limits the single-step travel of the hinge pin connected to the gear, and the hinge pin can move to the required height position at a constant speed, and can be accurately adjusted to the required angle range;

[0020] The herringbone splint of the film blowing machine has a simple structure, can be quickly built, has low cost, is easy to use, and is suitable for large-scale production operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a herringbone splint for a film blowing machine provided by the utility model;

[0022] Figure 2 For the corresponding Figure 1 A local enlarged view of the circular dotted box area A in FIG.

[0023] The reference numerals in the above drawings are:

[0024] Support frame 1, column 11, side rail 12, top crossbeam 13, transverse slot 131, slider 132, give way slot 133, slider locking knob 134, clamping plate frame 2, roller 21, hinge part 3, hinge pin 31, hinge ear rod 32, lifting rod 33, connecting rod 34, rack plate 4, gear 41, gear locking knob 42, fixing handle 43, scale ruler 44. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the utility model is not limited to these embodiments.

[0026] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not very relevant are omitted.

[0027] Reference Figure 1 As shown, an embodiment of the utility model provides a herringbone splint for a film blowing machine, which includes a support frame 1 and two splint frames 2.

[0028] The support frame 1 includes a column 11, a side rail 12 spanning between the two columns 11, and a top beam 13 connecting the tops of the columns 11. The two plywood frames 2 are arranged inside the support frame 1 opposite to each other, and the spacing between the two plywood frames 2 gradually decreases from the bottom to the top of the support frame 1. A plurality of rollers 21 are arranged side by side on the plywood frame 2, and the two ends of the plurality of rollers 21 are respectively rotatably connected to the plywood frame 2, and the top two sides of the plywood frame 2 are respectively connected to the top beam 13 of the support frame 1.

[0029] Combination Figure 1 and Figure 2 As shown, a hinge part 3 is arranged between the bottoms of the two clamping frames 2, and the hinge part 3 includes a hinge pin 31 and two hinge ear rods 32 rotating around the hinge pin 31, and the two hinge ear rods 32 are rotatably connected to the bottoms of the two clamping frames 2 in a one-to-one manner, and a rack plate 4 extending vertically from the bottom to the top of the support frame 1 is fixedly arranged on the side rail 12, and the hinge pin 31 is connected to a gear 41 moving in the rack plate 4, and is used to move up and down along the rack plate 4, driving the two hinge ear rods 32 to rotate synchronously, thereby changing the spacing between the bottoms of the two clamping frames 2 to adjust the angle between the two clamping frames 2, and a gear locking knob 42 is provided on the rack plate 4 for locking and fixing the gear 41 and the hinge pin 31.

[0030] The herringbone splint of the film blowing machine provided by the embodiment of the utility model can be used to control the hinge pin 31 to move up and down along the rack plate 4 with the gear 41 according to the characteristics and process requirements of the film material, so as to change the opening angle of the two hinge ear rods 32, and the bottom of the two splint frames 2 changes the distance between each other under the linkage of the hinge ear rods 32, so as to adjust the angle of the two splint frames 2, and it is not necessary to disassemble and reinstall the herringbone splint components to adjust the directions of the splint frames 2 respectively, which saves adjustment time and improves work efficiency; the two splint frames 2 can be synchronously adjusted under the action of the hinge part 3 located in the center, and can maintain symmetrical displacement, ensure that the herringbone splint guides the path of the film bubble and stably shrinks it into a film; and the rack plate 4 limits the single-step travel of the hinge pin 31 connected to the gear 41, and the hinge pin 31 can keep moving to the required height position at a constant speed, so as to achieve precise adjustment to the required angle range; the herringbone splint of the film blowing machine has a simple structure and can be quickly built on a conventional support frame 1, so as to achieve low cost and simple use.

[0031] Furthermore, a lifting rod 33 penetrating the gear 41 is formed on the hinge pin 31, and the lifting rod 33 is fixedly connected to the output shaft of the driving motor to drive the gear 41 and the hinge pin 31 to move up and down under the drive of the driving motor. The operator can control the forward and reverse rotation of the driving motor through the control unit provided for controlling the driving motor, thereby driving the lifting rod 33 to move up and down together with the gear 41 and the hinge pin 31. To adapt to the rack plate 4, the driving motor can be a stepping motor.

[0032] When the two clamping plates 2 are adjusted to the required angle range, a locking device should be provided to completely lock the position of the clamping plates 2 to ensure that the angle does not change during the film blowing process and maintain stability. In this embodiment, the lifting rod 33 extends toward the side of the rack plate 4 to form a fixing handle 43, and the gear locking knob 42 is screwed into the fixing handle 43 and can be fixed with the rack plate 4 to allow the gear 41 and the hinge pin 31 to suspend at the current position.

[0033] As an implementation manner, the gear locking knob 42 can be connected to a locking claw for braking the gear 41, so as to fix the gear 41 and the hinge pin 31 connected thereto.

[0034] In order to enable the operator to more accurately measure the change of the hinge pin 31 along the stroke of the gear 41, a scale ruler 44 extending along the stroke direction is provided on one side of the rack plate 4.

[0035] Similarly, in order to measure the angle between the hinge ear rod 32 and the included angle between the herringbone splint with an accurate angle value, the hinge pin 31 is provided with an angle measuring disk.

[0036] Specifically, there are two hinge parts 3, which are respectively located at the two ends of the roller 21. A connecting rod 34 is fixed between the hinge ears 32 in the two hinge parts 3 to keep the travel of the two hinge parts 3 synchronized. Since the inner center area of ​​the two clamping frames 2 needs to pass the guided film bubble, the setting position of the connecting rod 34 should be avoided as much as possible to avoid the inner center area of ​​the two clamping frames 2. The structure is more stable when it is located at the clamping frames 2. The diameter of the connecting rod 34 should be smaller than the diameter of the roller 21 to avoid contact with the film bubble.

[0037] Since the hinge part 3 is to drive the movement of the two clamping frames 2, the material of high strength should be selected. In order to make the adjustment of the clamping frames 2 easier, the hinge part 3 should be made of light material as much as possible to reduce the weight of the structure. For example, the hinge ear rod 32 and the connecting rod 34 are plastic rods with hard sleeves. Since static electricity may be generated on the film and affect the film quality, as an embodiment of the roller 21, the roller 21 located on the top of the clamping frame 2 can use an ion wind rod to eliminate the charge on the film and ensure the stability of the film.

[0038] When adjusting the angle of the clamp frame 2, the top of the clamp frame 2 should be fixed, and then the bottom of the clamp frame 2 should be moved to change the inclination of the clamp frame 2. In this embodiment, in order to provide a higher degree of freedom for adjusting the clamp frame 2, the top lateral position of the clamp frame 2 can also be adjusted. Specifically, a lateral slot 131 is provided on the top crossbeam 13 on both sides of the support frame 1. A slider 132 that can slide laterally in the slot is installed in the lateral slot 131. The top two sides of the clamp frame 2 are respectively connected to the slider 132 in the corresponding lateral slot 131, so that the top of the clamp frame 2 can move with the slider 132. A clearance slot 133 corresponding to the lateral slot 131 is provided on the top of the top crossbeam 13. A slider locking knob 134 that passes through the clearance slot 133 is connected to the slider 132 to lock and fix the slider 132. If the slider 132 and the hinge part 3 are adjusted to form a specific angle where the clamping frame 2 is wider at the top and narrower at the bottom, the clamping frame 2 can also be used for top-down wind ring film blowing.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The above is only a specific implementation 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, characterized in that: It comprises a support frame (1) and two clamping frame frames (2). The support frame (1) comprises a column (11), a side rail (12) straddling between the two columns (11), and a top crossbeam (13) connecting the tops of the columns (11); the two clamping frames (2) are arranged opposite to each other inside the support frame (1); the spacing between the two clamping frames (2) gradually decreases from the bottom to the top of the support frame (1); a plurality of rollers (21) are arranged side by side on the clamping frame (2); the two ends of the plurality of rollers (21) are respectively rotatably connected to the clamping frames (2); the top two sides of the clamping frames (2) are respectively connected to the top crossbeam (13) of the support frame (1); Wherein, a hinge part (3) is arranged between the bottoms of the two clamping frames (2), and the hinge part (3) includes a hinge pin (31) and two hinge ear rods (32) rotating around the hinge pin (31), and the two hinge ear rods (32) are rotatably connected to the bottoms of the two clamping frames (2) in a one-to-one manner, and a rack plate (4) vertically extending from the bottom to the top of the support frame (1) is fixedly arranged on the side rail (12), and the hinge pin (31) is connected to a gear (41) moving in the rack plate (4) and is used to move up and down along the rack plate (4), drive the two hinge ear rods (32) to rotate synchronously, and change the distance between the bottoms of the two clamping frames (2) to adjust the angle between the two clamping frames (2), and a gear locking knob (42) is arranged on the rack plate (4) for locking and fixing the gear (41) and the hinge pin (31).

2. The herringbone splint of the film blowing machine according to claim 1, characterized in that: A lifting rod (33) is formed on the hinge pin (31) and penetrates the gear (41). The lifting rod (33) is fixedly connected to the output shaft of the driving motor to drive the gear (41) and the hinge pin (31) to move up and down under the drive of the driving motor.

3. The herringbone splint of the film blowing machine according to claim 2, characterized in that: The lifting rod (33) extends toward the side of the rack plate (4) to form a fixing handle (43), and the gear locking knob (42) is screwed into the fixing handle (43) and can be fixed with the rack plate (4) to allow the gear (41) and the hinge pin (31) to suspend at the current position.

4. The herringbone splint for a film blowing machine according to claim 1, characterized in that: One side of the rack plate (4) is provided with a scale ruler (44) extending along its travel direction.

5. The herringbone splint for film blowing machine according to claim 1, characterized in that: There are two hinge parts (3), which are respectively located at the two ends of the roller (21). A connecting rod (34) is fixed between the opposite hinge ear rods (32) in the two hinge parts (3) so that the travel of the two hinge parts (3) remains synchronized.

6. The herringbone splint for film blowing machine according to claim 5, characterized in that: The hinge ear rod (32) and the connecting rod (34) are plastic rods sleeved with shaft sleeves.

7. The herringbone splint for a film blowing machine according to claim 1, characterized in that: An angle measuring disc is arranged on the hinge pin (31).

8. The herringbone splint for a film blowing machine according to claim 1, characterized in that: The top crossbeams (13) on both sides of the support frame (1) are provided with transverse grooves (131), and the transverse grooves (131) are provided with sliders (132) that can slide transversely along the grooves. The top sides of the clamping frame (2) are respectively connected to the sliders (132) in the corresponding transverse grooves (131), so that the top of the clamping frame (2) can move with the sliders (132).

9. The herringbone splint for a film blowing machine according to claim 8, characterized in that: A clearance groove (133) corresponding to the transverse groove (131) is provided above the top crossbeam (13), and a slider locking knob (134) passing through the clearance groove (133) is connected to the slider (132) for locking and fixing the slider (132).

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