Biodegradable plastic film blowing device

Abstract

The utility model relates to a biodegradable plastic film blowing device which comprises a box body, two groups of rotating components and a transmission component, a cavity is arranged in the box body, and the transmission component is arranged between the upper ends of two opposite side plates of the box body in the transverse direction; supporting plates are arranged on the opposite faces of the two transverse opposite side plates of the box body correspondingly, and the two rotating assemblies are arranged on the upper surfaces of the two supporting plates correspondingly. According to the biodegradable plastic film blowing device, the transmission assembly arranged between the two transverse side plates of the box body is used for driving the first sliding block and the second sliding block to make reciprocating motion close to each other and away from each other on the positive and negative screw rods, so that the distance between the first sliding block and the second sliding block can be adjusted, and under cooperation of the push rod, the film blowing efficiency is improved. The upper ends of the two clamping plates can move in the same direction along with movement of the first sliding block and the second sliding block, the distance is adjusted so as to meet the production requirements of thin films with different thicknesses, and the production flexibility and applicability of the device are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film blowing, in particular to a biodegradable plastic film blowing device. Background Art

[0002] Plastic film blowing is a plastic processing method, which refers to the process of heating and melting plastic particles and then using high-pressure airflow to blow the molten plastic material into a film. In this process, the plastic particles are first heated and melted, and then extruded through the mold of the film blowing machine to form a tubular film blank. Then, under the action of high-pressure air, the tubular film is blown to the required thickness. Finally, after cooling and shaping, the film is formed.

[0003] In the film blowing device, the herringbone splint plays an important role. Its main function is to stabilize the film bubble, reduce swinging, and flatten the film bubble to further cool the film. Therefore, the spacing and size between the herringbone splints determine the degree to which the film bubble is flattened, thereby affecting the thickness and width of the film. In most existing film blowing devices, the herringbone splints are fixedly installed, which makes it impossible for the device to adjust the distance between the splints to produce films of different thicknesses according to demand, which greatly limits the production flexibility and applicability of the device.

[0004] Therefore, in order to solve the above problems, a biodegradable plastic film blowing device is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a biodegradable plastic film blowing device, which has the advantages of being able to adjust the spacing between clamping plates according to the needs of different films, and solves the problem of poor applicability of traditional film blowing devices.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A biodegradable plastic film blowing device comprises a box body, two sets of rotating components and a transmission component, the box body has a built-in cavity, and the transmission component is installed between the upper ends of the two opposite side plates of the box body along the transverse direction of the box body;

[0007] A film blowing machine is installed on the upper surface of the bottom plate of the box body, and a cooling air ring is clamped on the inner wall of the side plate of the box body, and the cooling air ring is located above the film blowing machine;

[0008] The box body is provided with support plates on opposite sides of the two opposite plates in the transverse direction, the support plates are located above the cooling air ring and below the transmission assembly, and the two groups of rotating assemblies are respectively installed on the upper surfaces of the two support plates and correspond to each other;

[0009] The transmission assembly is located behind the clamping plate;

[0010] Wherein, the rotating assembly includes a clamping plate, the lower end of which is rotatably connected to the support plate, and a sliding groove is provided on the side of the two clamping plates which are away from each other, and a positioning block is slidably connected in the sliding groove;

[0011] Wherein, the transmission assembly includes a reciprocating motor and a bearing seat, a forward and reverse screw is rotatably connected between the reciprocating motor and the bearing seat, a first slider and a second slider are respectively meshed and slid on the threads on both sides of the forward and reverse screw, and a push rod is installed on the side of the first slider and the second slider close to the clamping plate, and the two push rods are L-shaped and arranged in opposite directions, and the ends of the two push rods close to each other are respectively rotatably connected to two positioning blocks;

[0012] A traction roller is installed at the top of the box body;

[0013] A melting machine is installed at one side of the box body at intervals, and the output end of the melting machine passes through a side plate of one side of the box body and is connected with the input end of the film blowing machine.

[0014] Furthermore, two mounting plates are installed at intervals on the upper surface of the support plate, and receiving columns are installed at the lower ends of the opposite sides of the clamping plate. The two receiving columns are installed on the two mounting plates respectively through bearings on the sides away from each other, and the clamping plate is rotatably connected to the mounting plate through the bearing.

[0015] Furthermore, a sliding rod is installed between two vertically opposite side walls in the sliding groove, the sliding rod passes through the positioning block, and the positioning block is slidably connected to the sliding rod.

[0016] Furthermore, a positioning column is installed on the side of the positioning block away from the clamping plate, and positioning holes are penetrated on the sides of the two push rods close to each other. The push rods are movably mounted on the positioning column through the positioning holes, and the push rods are rotatably connected to the positioning block through the positioning column.

[0017] Furthermore, the transmission assembly includes two fixed plates, which are respectively mounted on the inner walls of the side plates of the box body on both sides of the box body, and the reciprocating motor and the bearing seat are respectively mounted on the opposite surfaces of the two mounting plates.

[0018] Furthermore, the output shaft of the reciprocating motor is arranged toward the bearing seat, the tail end of the output shaft of the reciprocating motor is connected to one end of the forward and reverse screw rods, and the outer wall of the other end of the forward and reverse screw rods is connected to the inner wall of the inner ring of the bearing inside the bearing seat.

[0019] Furthermore, two limit rods are installed between the two fixing plates and are respectively located on both sides of the forward and reverse screw rods. The two limit rods both penetrate the first slider and the second slider, and the first slider and the second slider are both slidably connected to the two limit rods.

[0020] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0021] The biodegradable plastic film blowing device utilizes a transmission component installed between two lateral side plates of a box body to drive a first slider and a second slider to perform reciprocating motion on forward and reverse screws, such that the spacing between the first slider and the second slider can be adjusted. Thus, with the cooperation of a push rod, the upper ends of the two clamping plates can respectively move in the same direction as the first slider and the second slider move. At the same time, with the synchronous cooperation of a rotating component, the two clamping plates can respectively perform bidirectional rotation in clockwise and counterclockwise directions in opposite directions with their lower ends as the center. Thus, the two clamping plates can adjust the spacing while adjusting their inclination angles to meet the production needs of films of different thicknesses, thereby greatly increasing the production flexibility and applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the internal installation structure of the box of the utility model;

[0023] Figure 2 It is a three-dimensional schematic diagram of the connection structure of the transmission assembly of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of the connection structure of the slideway and the positioning block of the utility model.

[0025] In the figure: 1. Box body; 2. Film blowing machine; 3. Cooling air ring; 4. Rotating assembly; 41. Support plate; 42. Mounting plate; 43. Clamp; 44. Support column; 45. Slide groove; 46. Slide rod; 47. Positioning block; 48. Positioning column; 5. Transmission assembly; 51. Fixed plate; 52. Reciprocating motor; 53. Bearing seat; 54. Forward and reverse screw; 55. First slider; 56. Second slider; 57. Limit rod; 58. Push rod; 59. Positioning hole; 6. Pulling roller; 7. Melting machine. 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 1-3In the present embodiment, a biodegradable plastic film blowing device is provided, which utilizes a transmission assembly 5 installed between the two lateral side plates of the box body 1 to drive the first slider 55 and the second slider 56 to make a reciprocating motion on the forward and reverse screws 54, so that the spacing between the first slider 55 and the second slider 56 can be adjusted. Therefore, with the cooperation of the push rod 58, the upper ends of the two clamping plates 43 can move in the same direction as the movement of the first slider 55 and the second slider 56 respectively; at the same time, with the synchronous cooperation of the rotating assembly 4, the two clamping plates 43 can respectively make a clockwise and counterclockwise bidirectional rotation with their lower ends as the center in opposite directions, so that the two clamping plates 43 can adjust their inclination angles and the spacing at the same time to meet the production needs of films of different thicknesses, thereby greatly increasing the production flexibility and applicability of the device.

[0028] Specifically, a biodegradable plastic film blowing device in this embodiment includes a box body 1, two sets of rotating components 4 and a transmission component 5. The box body 1 has a built-in cavity, and the transmission component 5 is installed between the upper ends of the two opposite side plates of the box body 1 along the transverse direction of the box body 1;

[0029] A film blowing machine 2 is installed on the upper surface of the bottom plate of the box body 1, and a cooling air ring 3 is clamped on the inner wall of the side plate of the box body 1, and the cooling air ring 3 is located above the film blowing machine 2;

[0030] The box body 1 is provided with support plates 41 on opposite sides of the two opposite sides in the transverse direction. The support plates 41 are located above the cooling air ring 3 and below the transmission assembly 5. The two sets of rotating assemblies 4 are respectively installed on the upper surfaces of the two support plates 41 and correspond to each other.

[0031] The transmission assembly 5 is located behind the clamping plate 43;

[0032] The rotating assembly 4 includes a clamping plate 43, the lower end of which is rotatably connected to the supporting plate 41, and a sliding groove 45 is provided on the side of the two clamping plates 43 that are away from each other, and a positioning block 47 is slidably connected in the sliding groove 45;

[0033] Among them, the transmission assembly 5 includes a reciprocating motor 52 and a bearing seat 53, and a forward and reverse screw 54 is rotatably connected between the reciprocating motor 52 and the bearing seat 53. The first slider 55 and the second slider 56 are respectively meshed and slid on the threads on both sides of the forward and reverse screw 54. The first slider 55 and the second slider 56 are respectively equipped with push rods 58 on the side close to the clamping plate 43. The two push rods 58 are both L-shaped and arranged in opposite directions. The ends of the two push rods 58 close to each other are rotatably connected to the two positioning blocks 47 respectively.

[0034] A traction roller 6 is installed at the top of the box body 1;

[0035] A melting machine 7 is installed at one side of the box body 1 , and the output end of the melting machine 7 passes through a side plate of the box body 1 and is connected to the input end of the film blowing machine 2 .

[0036] During actual use, the user connects an external power supply to the reciprocating motor 52 and controls its operation. The reciprocating motor 52 drives the forward and reverse screw 54 to rotate clockwise and counterclockwise. The rotation of the forward and reverse screw 54 enables the first slider 55 and the second slider 56 to move within the travel range of the side threads on the forward and reverse screw 54, respectively, and the movement directions of the first slider 55 and the second slider 56 are opposite. The forward and reverse screw 54 rotates in both directions, so that the first slider 55 and the second slider 56 can reciprocate on the forward and reverse screw 54, respectively, so that the first slider 55 and the second slider 56 can be close to each other on the forward and reverse screw 54. and move away from each other; since the lower end of the splint 43 is rotatably connected to the support plate 41, and the positioning block 47 can slide in the slide groove 45, when the first slider 55 and the second slider 56 make reciprocating motion, driven by the push rod 58, the two splints 43 can perform clockwise and counterclockwise bidirectional rotation with their lower ends as the center, and the rotation directions of the two splints 43 are opposite; therefore, the upper ends of the two splints 43 can get closer to each other and move away from each other as the first slider 55 and the second slider 56 get closer to each other, thereby making the inclination angle of the two splints 43 and the distance between them doubly adjustable to meet the production needs of films of different thicknesses.

[0037] After the user adjusts the clamping plate 43, the raw material is put into the melting machine 7. After the raw material is melted in the melting machine 7, it is formed into a plastic tubular film through the film blowing machine 2. Subsequently, the extruded plastic tubular film is air-cooled and inflated by the cooling air ring 3 on the film blowing machine 2 to form a film bubble, and then the film bubble is clamped flat by two clamping plates 43 to form a fitted film, and then the material is pulled and stretched by the pulling roller 6 to be discharged.

[0038] Two mounting plates 42 are installed at intervals on the upper end surface of the support plate 41, and receiving columns 44 are installed on the lower ends of the opposite sides of the clamping plate 43. The two receiving columns 44 are installed on the two mounting plates 42 through bearings on the sides away from each other, and the clamping plate 43 is rotatably connected to the mounting plate 42 through bearings.

[0039] A slide bar 46 is installed between two vertically opposite side walls in the slide groove 45 . The slide bar 46 passes through a positioning block 47 . The positioning block 47 is slidably connected to the slide bar 46 .

[0040] A positioning column 48 is installed on the side of the positioning block 47 away from the clamping plate 43, and positioning holes 59 are penetrated on the sides of the two push rods 58 close to each other. The push rods 58 are movably mounted on the positioning column 48 through the positioning holes 59, and the push rods 58 are rotatably connected to the positioning block 47 through the positioning column 48.

[0041] The transmission assembly 5 includes two fixing plates 51 , which are respectively mounted on the inner walls of the side plates of the box body 1 at opposite sides in the transverse direction of the box body 1 , and the reciprocating motor 52 and the bearing seat 53 are respectively mounted on the opposite surfaces of the two mounting plates 42 .

[0042] The output shaft of the reciprocating motor 52 is arranged toward the bearing seat 53 , and the tail end of the output shaft of the reciprocating motor 52 is connected to one end of the forward and reverse screw 54 , and the outer wall of the other end of the forward and reverse screw 54 is connected to the inner wall of the inner ring of the bearing inside the bearing seat 53 .

[0043] When the reciprocating motor 52 is running, its output shaft can rotate clockwise and counterclockwise. With the cooperation of the bearing inside the bearing seat 53, the forward and reverse screws 54 can rotate clockwise and counterclockwise between the reciprocating motor 52 and the bearing seat 53.

[0044] Two limit rods 57 are installed between the two fixing plates 51 and are respectively located on both sides of the forward and reverse screw rods 54 . The two limit rods 57 both penetrate the first slider 55 and the second slider 56 . The first slider 55 and the second slider 56 are both slidably connected to the two limit rods 57 .

[0045] Under the restriction of the limit rod 57 , the first slider 55 and the second slider 56 can perform reciprocating linear motion on the forward and reverse screw rods 54 , thereby preventing the first slider 55 and the second slider 56 from rotating during movement, and further ensuring the stability of the push rod 58 during movement.

[0046] The working principle of the above embodiment is:

[0047] In the first step, the user connects an external power supply to the reciprocating motor 52 and controls its operation. The reciprocating motor 52 drives the forward and reverse screws 54 to rotate clockwise and counterclockwise, so that the first slider 55 and the second slider 56 can reciprocate on the forward and reverse screws 54 respectively, and then the first slider 55 and the second slider 56 can approach each other and move away from each other on the forward and reverse screws 54; because the lower end of the clamping plate 43 is rotatably connected to the support plate 41, and the positioning block 47 can slide in the slide groove 45, when the first slider 55 and the second slider 56 reciprocate, driven by the push rod 58, the two clamping plates 43 can rotate clockwise and counterclockwise with their lower ends as the center, and the rotation directions of the two clamping plates 43 are opposite; therefore, the upper ends of the two clamping plates 43 can approach each other and move away from each other as the first slider 55 and the second slider 56 approach each other, thereby making the inclination angle and the spacing between the two clamping plates 43 double adjustable to meet the production needs of films of different thicknesses.

[0048] In the second step, after the user adjusts the clamping plate 43, the raw material is put into the melting machine 7. After the raw material is melted in the melting machine 7, it is formed into a plastic tubular film through the film blowing machine 2; then, the extruded plastic tubular film is air-cooled and blown into a film bubble through the cooling air ring 3 on the film blowing machine 2, and then the film bubble is clamped flat by two clamping plates 43 to form a fitted film, and then it is pulled and stretched by the pulling roller 6 for discharge.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biodegradable plastic film blowing device, comprising a housing (1), two sets of rotating components (4) and a transmission component (5), characterized in that: The box body (1) has a built-in cavity, and the transmission assembly (5) is installed between upper ends of two opposite side plates of the box body (1) along the transverse direction of the box body (1); A film blowing machine (2) is installed on the upper surface of the bottom plate of the box body (1), a cooling air ring (3) is clamped on the inner wall of the side plate of the box body (1), and the cooling air ring (3) is located above the film blowing machine (2); The box body (1) is provided with support plates (41) on opposite surfaces of two side plates opposite to each other in the transverse direction. The support plates (41) are located above the cooling air ring (3) and below the transmission assembly (5). The two groups of rotating assemblies (4) are respectively installed on the upper surfaces of the two support plates (41) and correspond to each other. The transmission assembly (5) is located behind the clamping plate (43); The rotating assembly (4) comprises a clamping plate (43), the lower end of which is rotatably connected to the supporting plate (41), and a sliding groove (45) is provided on the side surfaces of the two clamping plates (43) which are away from each other, and a positioning block (47) is slidably connected in the sliding groove (45); The transmission assembly (5) comprises a reciprocating motor (52) and a bearing seat (53), a forward and reverse screw rod (54) is rotatably connected between the reciprocating motor (52) and the bearing seat (53), a first slider (55) and a second slider (56) are respectively meshed and slidably engaged on the threads on both sides of the forward and reverse screw rod (54), a push rod (58) is installed on the side of the first slider (55) and the second slider (56) close to the clamping plate (43), the two push rods (58) are L-shaped and arranged in opposite directions, and the ends of the two push rods (58) close to each other are respectively rotatably connected to the two positioning blocks (47); A traction roller (6) is installed at the top of the box body (1); A melting machine (7) is installed at intervals on one side of the box body (1); the output end of the melting machine (7) passes through a side plate of the box body (1) and is connected to the input end of the film blowing machine (2).

2. A biodegradable plastic film blowing device according to claim 1, characterized in that: Two mounting plates (42) are installed at intervals on the upper end surface of the support plate (41), and receiving columns (44) are installed at the lower ends of the two opposite sides of the clamping plate (43). The two receiving columns (44) are installed on the two mounting plates (42) respectively on the sides away from each other through bearings, and the clamping plate (43) is rotatably connected to the mounting plate (42) through the bearing.

3. A biodegradable plastic film blowing device according to claim 1, characterized in that: A sliding rod (46) is installed between two vertically opposite side walls in the sliding groove (45), and the sliding rod (46) passes through a positioning block (47), and the positioning block (47) is slidably connected to the sliding rod (46).

4. A biodegradable plastic film blowing device according to claim 1, characterized in that: A positioning column (48) is installed on the side of the positioning block (47) away from the clamping plate (43), and positioning holes (59) are penetrated on the sides of the two push rods (58) close to each other. The push rods (58) are movably sleeved on the positioning column (48) through the positioning holes (59), and the push rods (58) are rotatably connected to the positioning block (47) through the positioning column (48).

5. The biodegradable plastic film blowing device according to claim 1, characterized in that: The transmission assembly (5) comprises two fixing plates (51), the two fixing plates (51) being respectively mounted on the inner walls of the side plates of the box body (1) on opposite sides in the transverse direction of the box body (1), and the reciprocating motor (52) and the bearing seat (53) being respectively mounted on opposite surfaces of the two mounting plates (42).

6. The biodegradable plastic film blowing device according to claim 1, characterized in that: The output shaft of the reciprocating motor (52) is arranged toward the bearing seat (53), the tail end of the output shaft of the reciprocating motor (52) is connected to one end of the forward and reverse screw rods (54), and the outer wall of the other end of the forward and reverse screw rods (54) is connected to the inner wall of the inner ring of the bearing inside the bearing seat (53).

7. The biodegradable plastic film blowing device according to claim 5, characterized in that: Two limiting rods (57) are installed between the two fixing plates (51) and are respectively located on both sides of the forward and reverse screw rods (54). The two limiting rods (57) both penetrate the first slider (55) and the second slider (56). The first slider (55) and the second slider (56) are both slidably connected to the two limiting rods (57).

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