Film blowing and heat sealing mechanism for film bag production and processing

Abstract

The utility model discloses a film blowing heat sealing mechanism for producing and processing a film bag, which relates to the technical field of film production equipment, and comprises an annular limiting mechanism, the annular limiting mechanism comprises a shell, four sliding channels I positioned in the same plane are formed in the middle upper part of the outer arc wall of the shell, the top of the shell is fixedly connected with a top ring, and the top ring is fixedly connected with the bottom of the shell. Four arc-shaped limiting plates distributed in an annular array abut against the lower portion of the top ring, the four arc-shaped limiting plates are matched with the four first sliding channels and correspond to the four first sliding channels in a one-to-one mode, first sliding grooves are formed in the bottoms of the arc-shaped limiting plates, vertically-arranged sliding columns are slidably connected into the first sliding grooves, and supporting plates are fixedly connected to the bottoms of the sliding columns. The side wall, away from the center in the shell, of the supporting plate is fixedly connected to the inner side wall of the shell. According to the film sealing device, through the annular limiting mechanism, a first batch of blown films can be sealed, a worker does not need to stand at an air disc opening for operation, and the safety of the operator is further protected.

Description

Technical Field

[0001] The utility model relates to the technical field of film production equipment, in particular to a film blowing and heat sealing mechanism for film bag production and processing. Background Art

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene or other resins. Plastic film is used as packaging or coating and is widely used in food, chemical and other fields. The existing film production equipment is mainly film blowing machines. Different types of film blowing machines are used to produce different types of films.

[0003] Some existing blown film equipment requires manual sealing of the extruded plastic with a rope, and then the staff above pulls the rope to pull the film up to the film stabilizing roller and then pulls it down to the staff below to put it on the winding roller. This process is not only time-consuming and labor-intensive, but the operator also needs to stand at the wind plate mouth when sealing the film without any protective measures, which poses a great safety hazard.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The utility model aims to provide a film blowing heat-sealing mechanism for producing and processing film bags, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides a film blowing heat sealing mechanism for film bag production and processing, including an annular limiting mechanism, the annular limiting mechanism including a shell, wherein four sliding channels 1 located in the same plane are opened in the upper part of the outer arc wall of the shell, a top ring is fixedly connected to the top of the shell, and four arc-shaped limiting plates distributed in an annular array are abutted under the top ring, the four arc-shaped limiting plates are matched with the four sliding channels 1 and correspond one to one, a sliding groove 1 is provided at the bottom of the arc-shaped limiting plate, a vertically arranged sliding column is slidably connected in the sliding groove 1, and a support plate is fixedly connected to the bottom of the sliding column, and a side wall of the support plate away from the inner center of the shell is fixedly connected to the inner side wall of the shell, and a rotating shaft is rotatably connected to the bottom of the arc-shaped limiting plate away from the sliding column, and an outer gear ring is provided under the support plate, and the four rotating shafts are fixedly connected to the top of the outer gear ring, and the outer gear ring is rotatably connected to the inner arc wall of the shell.

[0007] Furthermore, the four corners of the bottom of the shell are fixedly connected to the support column 2, a sliding channel 2 is opened in the lower middle of the outer arc wall on the rear side of the shell, the gear teeth at the rear end of the outer gear ring are slidably connected in the sliding channel 2, a gear is provided at the rear of the shell, the gear teeth at the front end of the gear are slidably connected in the sliding channel 2, the gear and the outer gear ring are meshed with each other, and the bottom of the gear is rotatably connected to the motor 1.

[0008] Furthermore, a top plate is provided directly above the annular limiting mechanism, and six supporting columns 1 are fixedly connected to the bottom of the top plate, a slide groove 2 is provided at the bottom of the top plate, an electric guide rail is provided in the slide groove 2, and an electric telescopic rod 1 is provided below the top plate, the fixed end of the electric telescopic rod 1 is slidably connected in the electric guide rail, the telescopic end of the electric telescopic rod 1 is fixedly connected to a fixed block, a groove 1 is provided on both sides of the fixed block, an electric telescopic rod 2 is fixedly connected to the inner wall of the groove 1, and the telescopic end of the electric telescopic rod 2 is fixedly connected to a convex-shaped limiting plate.

[0009] Furthermore, the outer circles of the four support columns surrounding the four corners of the annular limiting mechanism are all sleeved with rotating rods at the center, and the four rotating rods are fixedly connected with three horizontal limiting rods on the outer arc wall near the annular limiting mechanism, wherein the limiting rods diagonally arranged with respect to the annular limiting mechanism are at the same height, and the limiting rods on the two adjacent rotating rods are staggered up and down.

[0010] Furthermore, the electric telescopic rod is coaxially arranged with the shell, and after the four arc-shaped limit plates are rotated inwardly and contracted, two ends of a side wall of the four arc-shaped limit plates close to the inner center of the shell abut against each other and can form a hollow circle.

[0011] Furthermore, after the second electric telescopic rod is extended, the distance between the two convex-shaped limiting plates is greater than the diameter of the hollow circle at the center after the four arc-shaped limiting plates are retracted.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The first batch of blown films can be sealed through the annular limit mechanism without manual operation at the wind plate, which further protects the safety of operators;

[0014] 2. The sealed film can be pulled up by the electric telescopic rod 1, the fixed block, the electric telescopic rod 2, and the convex-shaped limit plate. After being pulled up, it can also be moved to the other side of the film stabilizing roller and moved down directly, eliminating the manual pulling operation. In addition, the force is relatively more uniform than that of manual pulling, making the film less likely to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a film blowing and heat sealing mechanism for the production and processing of film bags;

[0016] Figure 2 for Figure 1 Exploded view of the structure at A in the middle;

[0017] Figure 3 for Figure 1 A magnified view of the structure at B in the middle;

[0018] Figure 4It is a structural schematic diagram of the top plate and bottom of a film blowing and heat sealing mechanism for film bag production and processing;

[0019] Figure 5 This is a rendering of the effect of the unfolded annular limiting mechanism in a film blowing and heat sealing mechanism used in the production and processing of film bags.

[0020] In the figure:

[0021] 10. Top plate; 11. Support column 1;

[0022] 20. Motor 1; 21. Gear;

[0023] 30. arc-shaped limit plate; 31. outer gear ring; 32. rotating shaft; 33. support plate; 34. sliding column; 35. housing; 36. top ring; 37. support column 2;

[0024] 40. Electric telescopic rod 1; 41. Fixed block; 42. Electric telescopic rod 2; 43. Convex-shaped limiting plate;

[0025] 50. Rotating rod; 51. Limiting rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 , the utility model provides a technical solution:

[0028] See also Figure 1 and Figure 2 , including an annular limiting mechanism, which includes a shell 35, four sliding channels 1 located in the same plane are opened in the upper part of the outer arc wall of the shell 35, a top ring 36 is fixedly connected to the top of the shell 35, and four arc-shaped limiting plates 30 distributed in an annular array are abutted below the top ring 36, the four arc-shaped limiting plates 30 are matched with the four sliding channels 1 and correspond one to one, a slide groove 1 is provided at the bottom of the arc-shaped limiting plate 30, a vertically arranged sliding column 34 is slidably connected in the slide groove 1, a support plate 33 is fixedly connected to the bottom of the sliding column 34, a side wall of the support plate 33 away from the inner center of the shell 35 is fixedly connected to the inner side wall of the shell 35, and a rotating shaft 32 is rotatably connected to one end of the bottom of the arc-shaped limiting plate 30 away from the sliding column 34, an outer gear ring 31 is provided below the support plate 33, four rotating shafts 32 are fixedly connected to the top of the outer gear ring 31, and the outer gear ring 31 is rotatably connected to the inner arc wall of the shell 35.

[0029] It should be noted here that: the bottom of the support plate 33 does not contact the top of the outer gear ring 31. When the outer gear ring 31 rotates, the rotating shaft 32 on the top of the outer gear ring 31 rotates accordingly, and the rotating shaft 32 drives the arc-shaped limit plate 30 to move along the slide groove 1 at its bottom; the gear teeth of the outer gear ring 31 are provided with a slide groove 3 at the position corresponding to the inner wall of the shell 35, and the gear teeth of the outer gear ring 31 are slidably connected in the slide groove 3.

[0030] See also Figure 5 The four corners of the bottom of the shell 35 are fixedly connected to the support column 2 37, and a sliding channel 2 is opened in the middle and lower part of the outer arc wall on the rear side of the shell 35. The gear teeth at the rear end of the outer gear ring 31 are slidably connected in the sliding channel 2. A gear 21 is provided at the rear of the shell 35, and the gear teeth at the front end of the gear 21 are slidably connected in the sliding channel 2. The gear 21 and the outer gear ring 31 are meshed and connected with each other, and the bottom of the gear 21 is rotatably connected to the motor 1 20.

[0031] It should be noted here that: the sliding channel 2 is connected to the sliding groove 3, and the gear teeth of the outer gear ring 31 extend from the sliding channel 2; the motor 1 20 and the support column 2 37 are fixed on the same plane.

[0032] See also Figure 1 , Figure 3 and Figure 4 A top plate 10 is provided directly above the annular limiting mechanism, and six supporting columns 11 are fixedly connected to the bottom of the top plate 10. A slide groove 2 is provided at the bottom of the top plate 10, and an electric guide rail is provided in the slide groove 2. An electric telescopic rod 40 is provided below the top plate 10, and the fixed end of the electric telescopic rod 40 is slidably connected in the electric guide rail, and the telescopic end of the electric telescopic rod 40 is fixedly connected to a fixed block 41, and grooves 1 are provided on both sides of the fixed block 41, and an electric telescopic rod 2 42 is fixedly connected to the inner side wall of the groove 1, and a convex-shaped limiting plate 43 is fixedly connected to the telescopic end of the electric telescopic rod 2 42.

[0033] It should be noted here that among the six support columns 11, four support columns 11 located on the right side and center of the bottom of the top plate 10 are arranged around the annular limiting mechanism, and the remaining two support columns 11 are located on the left side of the bottom of the top plate 10; the top of the convex limiting plate 43 fits with the groove 1.

[0034] See also Figure 1 The outer circles of the four support columns 11 surrounding the four corners of the annular limiting mechanism are all sleeved with rotating rods 50, and the four rotating rods 50 are fixedly connected with three horizontal limiting rods 51 on the outer arc wall of the annular limiting mechanism close to the four rotating rods 50, among which the limiting rods 51 diagonally arranged with respect to the annular limiting mechanism are at the same height, and the limiting rods 51 on the two adjacent rotating rods 50 are staggered up and down.

[0035] It should be noted here that the driving source for driving the rotating rod 50 to rotate is embedded in the supporting column 11 corresponding to the rotating rod 50. When the electric telescopic rod 40 descends, the rotating rod 50 rotates inward to assist in positioning the electric telescopic rod 40. When the film tube is pulled up, the rotating rod 50 rotates outward to assist in fixing the film tube.

[0036] See also Figure 1 The electric telescopic rod 40 is coaxially arranged with the shell 35. After the four arc-shaped limit plates 30 are rotated and contracted inwardly, the two ends of the side wall of the four arc-shaped limit plates 30 close to the inner center of the shell 35 abut against each other and can form a hollow circle.

[0037] It should be noted that after the four arc-shaped limit plates 30 rotate inwardly, one end close to the center of the shell 35 will form a circle to prevent the film tube from over-contracting and causing holes after being blown out.

[0038] See also Figure 1 After the electric telescopic rod 42 is extended, the distance between the two convex limiting plates 43 is greater than the diameter of the hollow circle at the center after the four arc-shaped limiting plates 30 are contracted.

[0039] It should be noted that after the second electric telescopic rod 42 is extended, the length and the opened width of the two convex-shaped limiting plates 43 are sufficient to clamp the sealed film tube.

[0040] Working principle:

[0041] Step 1: When the film tube is blown out from the bottom of the annular limiting mechanism, the motor 20 drives the gear 21 to rotate clockwise, driving the outer gear ring 31 to rotate counterclockwise, and the rotating shaft 32 on the top of the outer gear ring 31 rotates accordingly, driving the arc-shaped limiting plate 30 to rotate toward the outer circle. At this time, the film tube passes through the center of the annular limiting mechanism, and the electric telescopic rod 40 begins to descend;

[0042] Step 2: When the film tube is blown to a suitable height, the gear 21 rotates counterclockwise to drive the outer gear ring 31 to rotate clockwise, and the arc-shaped limit plate 30 immediately shrinks to the inner circle to seal the top of the film tube. During the sealing process, when the electric telescopic rod 40 descends to the center of the rotating rod 50, the rotating rod 50 slowly rotates inward, driving the limit rod 51 to position the electric telescopic rod 40, and then the electric telescopic rod 40 drives the fixed block 41 to descend to the sealing position;

[0043] Step 3: When the sealing is completed, the fixed block 1 41 is just located not far above the sealing position, and then the electric telescopic rods 2 42 on both sides of the fixed block 41 extend out. When the bottom of the convex limiting plate 43 contacts the arc limiting plate 30, the electric telescopic rod 1 40 stops working, and the electric telescopic rod 2 42 contracts to drive the convex limiting plate 43 to clamp the sealing, and then the gear 21 rotates to drive the arc limiting plate 30 to release the restriction on the film tube;

[0044] Step 4: After the clamping is completed, the electric telescopic rod 40 begins to slowly shrink and pull up the seal of the film tube. At this time, the rotating rod 50 slowly rotates to drive the limit rod 51 to rotate outward to fix the film tube. When the electric telescopic rod 40 straightens the seal to the highest point, the electric guide rail on the top of the electric telescopic rod 40 drives the electric telescopic rod 40 to move horizontally to place the film tube on the roller of the next link and then descends to bring the seal to the bottom, and the operator can pull the seal to the winding roller.

Claims

1. A film blowing heat sealing mechanism for film bag production and processing, comprising an annular limiting mechanism, characterized in that: The annular limiting mechanism comprises a shell (35), wherein the upper portion of the outer arc wall of the shell (35) is provided with four sliding channels 1 located in the same plane, a top ring (36) is fixedly connected to the top of the shell (35), and four arc-shaped limiting plates (30) distributed in an annular array are abutted below the top ring (36), the four arc-shaped limiting plates (30) are matched and correspond one to one with the four sliding channels 1, and a sliding groove 1 is provided at the bottom of the arc-shaped limiting plate (30), and a vertically arranged sliding column ( 34), a support plate (33) is fixedly connected to the bottom of the slide post (34), a side wall of the support plate (33) away from the center of the shell (35) is fixedly connected to the inner side wall of the shell (35), an end of the bottom of the arc-shaped limit plate (30) away from the slide post (34) is rotatably connected to a rotating shaft (32), an outer toothed ring (31) is provided below the support plate (33), four rotating shafts (32) are fixedly connected to the top of the outer toothed ring (31), and the outer toothed ring (31) is rotatably connected to the inner arc wall of the shell (35).

2. A film blowing and heat sealing mechanism for film bag production and processing as claimed in claim 1, characterized in that: The four corners of the bottom of the shell (35) are fixedly connected to the second support column (37). A second sliding channel is opened in the middle and lower part of the outer arc wall on the rear side of the shell (35). The gear teeth at the rear end of the outer gear ring (31) are slidably connected in the second sliding channel. A gear (21) is arranged at the rear of the shell (35). The gear teeth at the front end of the gear (21) are slidably connected in the second sliding channel. The gear (21) and the outer gear ring (31) are meshed and connected with each other. The bottom of the gear (21) is rotatably connected to a motor (20).

3. A film blowing and heat sealing mechanism for film bag production and processing as claimed in claim 1, characterized in that: A top plate (10) is provided just above the annular limiting mechanism, and six support columns (11) are fixedly connected to the bottom of the top plate (10), and a slide groove (2) is provided at the bottom of the top plate (10), and an electric guide rail is provided in the slide groove (2), and an electric telescopic rod (40) is provided below the top plate (10), and the fixed end of the electric telescopic rod (40) is slidably connected in the electric guide rail, and the telescopic end of the electric telescopic rod (40) is fixedly connected to a fixed block (41), and the left and right sides of the fixed block (41) are both provided with grooves (1), and the inner side wall of the groove (1) is fixedly connected to the electric telescopic rod (42), and the telescopic end of the electric telescopic rod (42) is fixedly connected to a convex-shaped limiting plate (43).

4. A film blowing and heat sealing mechanism for film bag production and processing as claimed in claim 3, characterized in that: The outer circles of the four support columns (11) surrounding the four corners of the annular limiting mechanism are all sleeved with rotating rods (50), and the four rotating rods (50) are fixedly connected with three horizontal limiting rods (51) on the outer arc wall close to the annular limiting mechanism, wherein the limiting rods (51) arranged diagonally with respect to the annular limiting mechanism are at the same height, and the limiting rods (51) on two adjacent rotating rods (50) are staggered in vertical distribution.

5. A film blowing and heat sealing mechanism for film bag production and processing as claimed in claim 3, characterized in that: The electric telescopic rod (40) is coaxially arranged with the shell (35). After the four arc-shaped limit plates (30) rotate inward and shrink, the two ends of a side wall of the four arc-shaped limit plates (30) close to the inner center of the shell (35) abut against each other and form a hollow circle.

6. A film blowing and heat sealing mechanism for film bag production and processing as claimed in claim 3, characterized in that: After the second electric telescopic rod (42) is extended, the distance between the two convex-shaped limiting plates (43) is greater than the diameter of the hollow circle at the center after the four arc-shaped limiting plates (30) are retracted.

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