Biodegradable sheet extruder

Abstract

The utility model discloses a biodegradable sheet extruder. The biodegradable sheet extruder comprises a host chassis, a degradation extrusion mechanism, a forming die and an adjusting mechanism, a hanging bracket is arranged on the host chassis; the degradation extrusion mechanism comprises a double-screw extrusion main unit and a degradation auxiliary unit which are arranged on the main machine chassis side by side; the forming die comprises a main die, a cooling auxiliary die and a forming auxiliary die; the main mold and the cooling auxiliary mold are arranged at the bottom of the hanging bracket to define a cooling mold cavity. The forming auxiliary mold is arranged at the bottom of the cooling auxiliary mold; a die lip cavity is formed between the forming auxiliary die and the main die; the adjusting mechanism comprises a transverse adjusting screw hole, a mounting block and an inclined adjusting screw hole; the transverse adjusting screw hole is formed in one side of the cooling auxiliary mold and located in the outer side of the forming auxiliary mold. A receding groove is formed in the outer side, close to the bottom, of the main die, and an adjusting block is arranged at the position, below the receding groove, of the main die. A die lip outlet is formed between the adjusting block and the forming auxiliary die; the mounting block is arranged on one side of the main mold; and the inclined adjusting screw hole is formed in the mounting block and is over against the adjusting block.

Description

Technical Field

[0001] The utility model belongs to the technical field of extruders, and in particular relates to a biodegradable sheet extruder. Background Art

[0002] In the production process of the extruder, the sheet is melted by the extruder and injected into the mold for forming. Its thickness is usually determined by the size of the mold outlet. In the existing sheet forming mold, it is usually difficult to adjust the size of the mold lip. Therefore, a mold of one model is usually only suitable for producing sheet products of the same thickness, which is not conducive to the diversified production of sheets. Utility Model Content

[0003] The utility model provides a biodegradable sheet extruder to solve the above technical problems.

[0004] The solution adopted by the utility model to achieve its technical effect is:

[0005] A biodegradable sheet extruder comprises a main frame, a degradation extrusion mechanism, a molding die and an adjustment mechanism; the main frame is provided with a hanger; the degradation extrusion mechanism comprises a twin-screw extrusion main unit and a degradation sub-unit; the twin-screw extrusion main unit and the degradation sub-unit are arranged side by side on the main frame; the molding die comprises a main die, a cooling sub-die and a molding sub-die; the main die and the cooling sub-die are arranged at the bottom of the hanger, and a cooling die cavity is formed between the main die and the cooling sub-die, and the cooling die cavity is respectively connected to the outlets of the twin-screw extrusion main unit and the degradation sub-unit; the molding sub-die is arranged at the bottom of the cooling sub-die; the molding sub-die is connected to the main die A die lip cavity is formed between the mold and the cooling mold cavity, and the die lip cavity is connected with the cooling mold cavity; the adjustment mechanism includes a transverse adjustment screw hole, an adjustment block, a mounting block and an oblique adjustment screw hole; the transverse adjustment screw hole is arranged on one side of the cooling sub-mold, and the transverse adjustment screw hole is located on the outside of the molding sub-mold; an air avoidance groove is arranged on the outside of the main mold near the bottom, so that the adjustment block is formed at the part of the main mold below the air avoidance groove; a die lip outlet is formed between the adjustment block and the molding sub-mold, and the die lip outlet is connected with the die lip cavity; the mounting block is arranged on one side of the main mold; the oblique adjustment screw hole is arranged on the mounting block, and the bottom of the oblique adjustment screw hole is opposite to the top inclined surface of the adjustment block.

[0006] Preferably, distributors are provided on the tops of the main mold and the cooling sub-mold; the distributors are respectively connected to the outlets of the twin-screw extruder main unit, the degradation sub-unit and the cooling mold cavity.

[0007] Preferably, a double-column screen changer is provided between the outlet of the twin-screw extruder main unit and the distributor; and a single-column screen changer is provided between the outlet of the degradation auxiliary unit and the distributor.

[0008] Preferably, a metering pump is provided between the double-column screen changer and the single-column screen changer and the distributor.

[0009] Preferably, the two metering pumps are respectively equipped with a reducer; and the two reducers are arranged on the hanger.

[0010] Preferably, the inside of the main mold and the cooling sub-mold are both provided with cooling pipes arranged around the cooling mold cavity; the outside of the main mold and the cooling sub-mold are provided with interfaces connected with the cooling pipes.

[0011] Preferably, the inner sides of the adjusting block and the forming sub-mold are both provided with deformation channels that pass through the front and the back; the deformation channels are located outside the communicating portion between the die lip cavity and the die lip outlet.

[0012] Preferably, a deformation groove is arranged on the outer side of the adjusting block; the deformation groove is arranged adjacent to the deformation channel in the adjusting block.

[0013] Preferably, a deformation notch is provided on the outer side of the molding sub-mold; the deformation notch is adjacent to the deformation channel in the molding sub-mold; and a mounting hole for mounting the molding sub-mold on the bottom of the cooling sub-mold is provided on the top of the deformation notch.

[0014] Preferably, an adjustment rail is provided on the top of the hanger; an adjustment plate is provided on the top of the main mold and the cooling sub-mold through a hanger; and the adjustment plate is slidably arranged on the adjustment rail through a slider.

[0015] The beneficial effects of the utility model are as follows: an adjustment mechanism is provided, and adjustment bolts can be screwed into and set on the transverse adjustment screw holes and the oblique adjustment screw holes. By turning the adjustment bolts, the adjustment bolts can be brought close to the extrusion molding sub-mold and the adjustment block, or the adjustment bolts can be moved away from the relaxation molding sub-mold and the adjustment block, thereby reducing or increasing the width of the film lip outlet, thereby achieving the effect of controlling the thickness of the sheet material out of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall schematic diagram of a biodegradable sheet extruder disclosed in an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of a feeding reducer disclosed in an embodiment of the utility model;

[0018] Figure 3This is a schematic diagram of the structure of the extrusion molding part of the biodegradable sheet extruder disclosed in the embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the main mold viewing angle of the molding mold disclosed in the embodiment of the utility model;

[0020] Figure 5 This is a perspective diagram of a cooling sub-mold of a molding mold disclosed in an embodiment of the utility model;

[0021] Figure 6 It is a cross-sectional schematic diagram of a molding die disclosed in an embodiment of the utility model.

[0022] Label description: 1-main frame, 2-hanger, 3-twin-screw extruder main unit, 4-degradation sub-unit, 5-main mold, 6-cooling sub-mold, 8-die lip cavity, 9-lateral adjustment screw hole, 10-adjustment block, 11-mounting block, 12-oblique adjustment screw hole, 13-avoidance groove, 14-die lip outlet, 15-distributor, 16-double-column screen changer, 17-single-column screen changer, 18-metering pump, 19-reducer, 20-cooling pipeline, 21-deformation channel, 22-deformation groove, 23-deformation notch, 24-mounting hole, 25-adjustment guide rail, 26-adjustment plate, 27-loader, 28-reducer box, 29-drive motor, 30-feeding barrel, 31-hopper, 32-exhaust hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. It should be noted that when an element is referred to as "fixed on" or "set on" another element, it can be directly on the other element or there may be a centering element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be a centering element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting or gluing.

[0024] Please refer to Figure 1-6In a preferred embodiment of the utility model, a biodegradable sheet extruder is disclosed, comprising a main frame 1, a degradation extrusion mechanism, a molding die and an adjustment mechanism; a hanger 2 is arranged on the main frame 1; the degradation extrusion mechanism comprises a twin-screw extrusion main unit 3 and a degradation sub-unit 4; the twin-screw extrusion main unit 3 and the degradation sub-unit 4 are arranged side by side on the main frame 1; the molding die comprises a main die 5, a cooling sub-die 6 and a molding sub-die 7; the main die 5 and the cooling sub-die 6 are arranged at the bottom of the hanger 2, and a cooling die cavity is formed between the main die 5 and the cooling sub-die 6, and the cooling die cavity is respectively connected to the outlets of the twin-screw extrusion main unit 3 and the degradation sub-unit 4; the molding sub-die 7 is arranged at the bottom of the cooling sub-die 6; A die lip cavity 8 is formed, and the die lip cavity 8 is connected with the cooling die cavity; the adjustment mechanism includes a transverse adjustment screw hole 9, an adjustment block 10, a mounting block 11 and an oblique adjustment screw hole 12; the transverse adjustment screw hole 9 is arranged on one side of the cooling sub-die 6, and the transverse adjustment screw hole 9 is located on the outside of the forming sub-die 7; an air avoidance groove 13 is arranged on the outside of the main die 5 near the bottom, so that the adjustment block 10 is formed at the part of the main die 5 located below the air avoidance groove 13; a die lip outlet 14 is formed between the adjustment block 10 and the forming sub-die 7, and the die lip outlet 14 is connected with the die lip cavity 8; the mounting block 11 is arranged on one side of the main die 5; the oblique adjustment screw hole 12 is arranged on the mounting block 11, and the bottom of the oblique adjustment screw hole 12 is directly opposite to the top inclined surface of the adjustment block 10.

[0025] Specifically, a distributor 15 is provided on the top of the main mold 5 and the cooling sub-mold 6; the distributor 15 is respectively connected to the outlets of the twin-screw extruder main unit 3, the degradation sub-unit 4 and the cooling mold cavity.

[0026] Specifically, a double-column screen changer 16 is provided between the outlet of the twin-screw extruder main unit 3 and the distributor 15 ; and a single-column screen changer 17 is provided between the outlet of the degradation auxiliary unit 4 and the distributor 15 .

[0027] Specifically, a metering pump 18 is provided between the double-column screen changer 16 and the single-column screen changer 17 and the distributor 15 .

[0028] Specifically, the two metering pumps 18 are respectively equipped with a reducer 19 ; the two reducers 19 are arranged on the hanger 2 .

[0029] Specifically, the inside of the main mold 5 and the cooling sub-mold 6 are both provided with cooling pipes 20 arranged around the cooling mold cavity; the outside of the main mold 5 and the cooling sub-mold 6 are provided with interfaces connected to the cooling pipes 20.

[0030] Specifically, the inner sides of the adjusting block 10 and the molding sub-mold 7 are both provided with a deformation channel 21 penetrating the front and the back; the deformation channel 21 is located outside the communicating portion between the die lip cavity 8 and the die lip outlet 14 .

[0031] Specifically, a deformation groove 22 is disposed on the outer side of the adjusting block 10 ; the deformation groove 22 is adjacent to the deformation channel 21 in the adjusting block 10 .

[0032] Specifically, a deformation notch 23 is provided on the outer side of the molding sub-mold 7; the deformation notch 23 is adjacent to the deformation channel 21 in the molding sub-mold 7; and a mounting hole 24 for mounting the molding sub-mold 7 on the bottom of the cooling sub-mold 6 is provided on the top of the deformation notch 22.

[0033] The setting of the deformation channel 21, the deformation groove 23 and the deformation notch 23 reduces the overall thickness and weight of the adjustment block 10 and the molding sub-mold 7, making it easier for the adjustment block 10 and the molding sub-mold 7 to be deformed by pressure, thereby facilitating the adjustment of the thickness; at the same time, the adjustment block 10 and the molding sub-mold 7 also have a certain elastic restoring force, thereby increasing the strength of both. In particular, the air avoidance groove 13 is provided above the adjustment block 10 to further increase the elastic force between the adjustment block 10 and the main mold 5.

[0034] Specifically, an adjustment rail 25 is provided on the top of the hanger 2; an adjustment plate 26 is provided on the top of the main mold 5 and the cooling sub-mold 6 through the hanger 2; and the adjustment plate 26 is slidably provided on the adjustment rail 25 through a slider. When the flow channel between the twin-screw extruder main unit 3 and the degradation sub-unit 4 and the forming mold and each metering and filtering device is to be inspected and maintained, the forming mold and the twin-screw extruder main unit 3 and the degradation sub-unit 4 do not need to be removed after being separated, and the adjustment plate 26 can be moved to one side, which greatly reduces the workload.

[0035] Specifically, a biodegradable sheet extruder further includes a feeder 27 , and an outlet of the feeder 27 is connected to an inlet of the twin-screw extruder main unit 3 .

[0036] Specifically, a biodegradable sheet extruder also includes a feeding reducer, which includes a reducer box 28, a drive motor 29, a feeding barrel 30 and a hopper 31; the reducer box 28 is arranged on the top of the twin-screw extruder main unit 3; the drive motor 29 is arranged on one side of the reducer box 28; the feeding barrel 30 is arranged on the other side of the reducer box 28, and the feeding screw in the feeding barrel 30 is transmission-connected with the driving end of the drive motor 29; the outlet of the feeding barrel 30 is located above the inlet of the twin-screw extruder main unit 3; the hopper 31 is arranged on the top of the feeding barrel 30, and the hopper 31 is respectively connected with the outlet of the feeder 27 and the feeding barrel 30. The feeding reducer can control the speed at which the material enters the twin-screw extruder main unit 3, and ensure that the material in the twin-screw extruder main unit 3 is thoroughly and evenly melted.

[0037] Specifically, a vent hole 32 is provided on one side of the cooling sub-mold 6 , and the vent hole 32 is communicated with the cooling mold cavity, so that the gas contained in the molten material can be discharged from the vent hole 32 .

[0038] It can be seen from the above description that the utility model can adjust the size of the film lip outlet to control the thickness of the produced sheet.

[0039] The preferred embodiments of the present invention are described in detail above in conjunction with the drawings in the specification. It should be noted that the protection scope of the present invention includes but is not limited to the above embodiments. The specific structures disclosed in the drawings in the specification are only preferred embodiments of the present invention. Technical personnel in the field can also develop other embodiments on this basis. Any simple deformation or equivalent substitution that does not deviate from the innovative concept of the present invention is covered by the present invention and belongs to the protection scope of the present invention.

Claims

1. A biodegradable sheet extruder, characterized in that: include: A mainframe chassis; a hanger is provided on the mainframe chassis; Degradation extrusion mechanism; The degradation extrusion mechanism comprises a twin-screw extruder main unit and a degradation auxiliary unit; The twin-screw extruder main unit and the degradation auxiliary unit are arranged side by side on the main unit chassis; Forming mold; The molding die comprises a main die, a cooling sub-die and a molding sub-die; The main mold and the cooling sub-mold are arranged at the bottom of the hanger, and a cooling mold cavity is formed between the main mold and the cooling sub-mold, and the cooling mold cavity is communicated with the outlets of the twin-screw extruder main unit and the degradation sub-unit respectively; the molding sub-mold is arranged at the bottom of the cooling sub-mold; a die lip cavity is formed between the molding sub-mold and the main mold, and the die lip cavity is communicated with the cooling mold cavity; An adjustment mechanism; the adjustment mechanism comprises a transverse adjustment screw hole, an adjustment block, a mounting block and an oblique adjustment screw hole; the transverse adjustment screw hole is arranged on one side of the cooling sub-mold, and the transverse adjustment screw hole is located on the outside of the molding sub-mold; an air avoidance groove is arranged on the outside of the main mold near the bottom, so that the adjustment block is formed at the part of the main mold located below the air avoidance groove; a die lip outlet is formed between the adjustment block and the molding sub-mold, and the die lip outlet is connected to the die lip cavity; the mounting block is arranged on one side of the main mold; the oblique adjustment screw hole is arranged on the mounting block, and the bottom of the oblique adjustment screw hole is directly opposite to the top inclined surface of the adjustment block.

2. A biodegradable sheet extruder according to claim 1, characterized in that: The tops of the main mold and the cooling sub-mold are provided with distributors; the distributors are respectively connected with the outlets of the twin-screw extruder main unit, the degradation sub-unit and the cooling mold cavity.

3. A biodegradable sheet extruder according to claim 2, characterized in that: A double-column screen changer is arranged between the outlet of the twin-screw extruder main unit and the distributor; a single-column screen changer is arranged between the outlet of the degradation auxiliary unit and the distributor.

4. A biodegradable sheet extruder according to claim 3, characterized in that: A metering pump is provided between the double-column screen changer and the single-column screen changer and the distributor.

5. A biodegradable sheet extruder according to claim 4, characterized in that: The two metering pumps are respectively equipped with a reducer; the two reducers are arranged on the hanger.

6. The biodegradable sheet extruder according to claim 1, characterized in that: The inside of the main mold and the cooling sub-mold are both provided with cooling pipes arranged around the cooling mold cavity; the outside of the main mold and the cooling sub-mold are provided with interfaces connected with the cooling pipes.

7. The biodegradable sheet extruder according to claim 1, characterized in that: The inner sides of the adjusting block and the molding sub-mold are both provided with deformation channels that pass through the front and the back; the deformation channels are located outside the communicating portion between the die lip cavity and the die lip outlet.

8. A biodegradable sheet extruder according to claim 7, characterized in that: A deformation groove is arranged on the outer side of the adjusting block; the deformation groove is arranged adjacent to the deformation channel in the adjusting block.

9. The biodegradable sheet extruder according to claim 7, characterized in that: A deformation notch is arranged on the outer side of the molding sub-mold; the deformation notch is arranged adjacent to the deformation channel in the molding sub-mold; and a mounting hole for mounting the molding sub-mold on the bottom of the cooling sub-mold is arranged on the top of the deformation notch.

10. The biodegradable sheet extruder according to claim 1, characterized in that: An adjusting guide rail is arranged on the top of the hanger; an adjusting plate is arranged on the top of the main mold and the cooling sub-mold through a hanger rod; and the adjusting plate is slidably arranged on the adjusting guide rail through a slider.

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