CN203844171U - Screw feeding sheet extruder - Google Patents

Abstract

The utility model discloses a screw feeding sheet extruder which comprises a bottom frame, a temperature control system, an electrical control system, a hydraulic control system, a power transmission device, a main screw rod and an auxiliary screw rod, wherein the thread depth of the auxiliary screw rod is 30mm-50mm, and the screw pitch of the auxiliary screw rod is 180m-200m; the thread depth of the main screw rod is 30mm-50mm; the main screw rod comprises a feeding section, an extrusion plasticization section and a metering section; the screw pitch of the feeding section is 180m-200m, the screw pitch of the extrusion plasticization section is reduced in sequence from one end close to the feeding section to one end of the metering section, the compression ratio is 1:1.5, and the screw pitch of the metering section is 125mm; an included angle between the back surface of the thread of the main screw rod or the auxiliary screw rod and the radial plane of the main screw rod or the auxiliary screw rod is 10-20 degrees. According to the screw feeding sheet extruder, the screw rod is endowed with relatively high conveying capacity by controlling the depth and screw pitch of the screw rod, and is not easily adhered to materials by controlling the included angle between the back surface of the thread and the radial plane of the screw rod.

Description

A screw-fed sheet extruder

technical field

The utility model relates to an extruder, in particular to a screw feeding sheet material extruder.

Background technique

The extruder is a machine used to extrude the aggregated plastic, rubber, rubber and plastic semi-finished products mixed by the internal mixer, and other granular or flake plastics, rubber and rubber semi-finished products to form products that meet the process requirements. Extruders currently on the market have the problems of poor feeding ability and uneven feeding, and after the existing extruders work, the rubber material is easily bonded to the screw, and the cleaning is cumbersome, which greatly increases the work of the staff. Labor intensity reduces production efficiency.

Utility model content

The purpose of this utility model is to address the above problems, to provide a screw-feeding sheet extruder to solve the problems of poor feeding capacity and uneven feeding of existing screw-feeding sheet extruders, and the existing screw-feeding sheet extruders. The screw of the sheet extruder is easy to stick to the rubber, and the cleaning is cumbersome, which increases the labor intensity of the staff and reduces the production efficiency.

The purpose of this utility model is to realize through the following technical solutions:

A screw feeding sheet material extruder, comprising a chassis, a temperature control system, an electrical control system, a hydraulic control system, and a power transmission device, wherein the power transmission device includes a motor, a reducer and a gear distribution box, and the gear distribution The first output end of the box is connected to the main screw by transmission, and the second output end is connected to the auxiliary screw by transmission. The bottom frame is slidably connected to the feeding cylinder and the extruding module. The auxiliary screw is located in the feeding cylinder. The thread depth of the screw is 30-50mm, the pitch is 180-200m, the longitudinal section of the head is L-shaped structure, the feeding cylinder can be connected with the power transmission device fixed on the chassis through the locking device, the said The extruding module can be connected with the feeding barrel through a locking device. The extruding module includes a main screw, a machine barrel, a head connected to the machine barrel and a die plate for rubber molding. The thread depth of the main screw is 30-50mm, the main screw includes a feeding section located in the feeding barrel, an extrusion plasticizing section and a metering section located in the barrel, the pitch of the feeding section is 180-200m, and the extrusion plasticizing section The screw pitch of the extrusion plasticizing section is 180-200m adjacent to the feeding section, and the screw pitch adjacent to the metering section is 125m. , the pitch of the metering section is 125 mm, and the included angle between the back of the thread of the main screw and the auxiliary screw and the radial plane of the main screw and the auxiliary screw is 10-20°.

As a preferred solution of the present utility model, the locking device includes a protruding block and a recessed block, the longitudinal section of the protruding block is a trapezoidal structure, and the recessed block is driven by a hydraulic cylinder. The matching notches of the wedges are connected with this structure, which has a very good locking function.

As a preferred solution of the utility model, a feeding hopper is arranged on the upper part of the feeding cylinder, which is convenient for feeding.

As a preferred solution of the present utility model, the pipes of the temperature control system and the hydraulic control system are all arranged in the towline, and arranged in an orderly manner and arranged in the towline, which is beautiful and tidy, and can reduce temperature and energy consumption. loss.

As a preferred solution of the present utility model, the machine head is assembled from a symmetrically arranged upper machine head and a lower machine head, and the machine head is provided with a bump with a trapezoidal longitudinal section, and the machine barrel is provided with a The convex block matches the concave block, and the concave block is driven by a hydraulic cylinder. This structure is used for connection, and has a very good locking function.

As a preferred solution of the present utility model, the flow channel of the machine head includes a symmetrically arranged first three-dimensional channel with a conical cross-section, a second three-dimensional channel, and a tapered channel between the first three-dimensional channel and the second three-dimensional channel. Three-dimensional channel, the head of this structure has good extrusion performance and sufficient mixing function. By adopting the head of this structure, it can ensure that the product is dense and uniform during extrusion, and its size is stable.

The beneficial effect of the utility model is that the screw feeding sheet extruder makes the screw have higher conveying capacity by controlling the depth and pitch of the screw, and controls the angle between the back of the thread and the radial plane of the screw to make the The screw is not easy to stick to the material and has a good self-cleaning function. In addition, the feeding cylinder, power transmission device, and extrusion module are locked and positioned by the locking device. The connection is firm, the positioning is accurate, and the disassembly is convenient for cleaning the screw. Structure Simple and easy to implement.

Description of drawings

Fig. 1 is the front view of a kind of screw feeding sheet extruder of the utility model;

Fig. 2 is a top view of a screw feeding sheet extruder of the present invention;

Fig. 3 is a schematic structural view of a screw feeding sheet extruder of the present invention in a disassembled state;

Fig. 4 is the structural representation of locking device of the present utility model;

Fig. 5 is a structural schematic diagram of the cooperation between the nose and barrel of the utility model;

Fig. 6 is the schematic diagram of the main screw structure of the utility model;

Fig. 7 is a schematic diagram of the structure of the auxiliary screw of the utility model;

Fig. 8 is a schematic diagram of the cross-sectional structure of the screw rod of the utility model;

Fig. 9 is a structural schematic diagram of the utility model head;

Fig. 10 is a sectional view at A-A of the machine head shown in Fig. 9 .

In the picture:

1. Underframe; 2. Motor; 3. Gear distribution box; 4. Temperature control system; 5. Feeding cylinder; 6. Machine barrel; 7. Machine head; 8. Drag chain; 9. Feeding hopper; 10. Electric Control system; 11. Hydraulic control system; 12. Main screw; 13. Sub-screw; 14. Concave block; 15. Convex block; 20, metering section; 21, head; 22, first three-dimensional channel; 23, second three-dimensional channel; 24, tapered three-dimensional channel.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments. It can be understood that the embodiments described here are only used to explain the utility model, rather than limit the utility model.

Please refer to Figures 1 to 3, in this embodiment, a screw-fed sheet material extruder includes a chassis 1, a temperature control system 4, an electrical control system 10, a hydraulic control system 11, and a power transmission device , the pipeline of the temperature control system 4 and the pipeline of the hydraulic control system 11 are all arranged in the drag chain 8, the power transmission device includes a motor 2, a reducer and a gear distribution box 3, and the first gear distribution box 3 The output end is connected to the main screw 12 by transmission, and the second output end is connected to the auxiliary screw 13 by transmission. The bottom frame 1 is slidably connected to the feeding cylinder 5 and the extruding module. The auxiliary screw 13 is located in the feeding cylinder 5 , the upper part of the feeding cylinder 5 is provided with a feeding hopper 9, and the feeding cylinder 5 can be connected with the power transmission device fixed on the chassis 1 through a locking device, and the extrusion module can be connected to the feeding module through a locking device. The barrels 5 are connected, and the extruding module includes the main screw 12, the barrel 6, the head 7 and the die plate for rubber molding. The head 7 is assembled by symmetrically arranged upper and lower heads. , and the head 7 is detachably connected to the barrel 6, the main screw 12 includes a feeding section 18 located in the feeding barrel 5, an extrusion plasticizing section 19 and a metering section 20 located in the barrel 6.

As shown in Figure 4, it is a schematic structural view of the locking device of the present invention, which includes a convex block 15 and a concave block 14. The longitudinal section of the convex block 15 is a trapezoidal structure, and the concave block 14 is hydraulically controlled. Cylinder drives, has the notch that matches with lug block 15 on it.

As shown in Figure 5, it is a schematic diagram of the cooperation structure of the machine head and the machine barrel of the present invention. The machine head 7 is provided with a bump 16 whose longitudinal section is a trapezoidal structure, and the machine barrel 6 is provided with a concave block matched with the bump 16. 17. The concave block 17 is driven by a hydraulic cylinder.

As shown in Figure 6, the structure schematic diagram of main screw rod, the thread depth h of main screw rod 12 is 40mm, and the pitch p1 of described feeding section 18 is 190m, and the pitch of extruding plasticizing section 19 on main screw rod 12 is fed by adjacent One end of the material section 18 to one end of the metering section 20 decreases successively, the compression ratio is 1:1.5, the screw pitch of the end of the extrusion plasticizing section 19 adjacent to the feeding section 18 is 180m, and the screw pitch of the end adjacent to the metering section 20 is 125m, so The pitch p2 of the metering section 20 is 125 mm.

As shown in Figure 7, it is a schematic diagram of the structure of the auxiliary screw. The thread depth of the auxiliary screw 13 is 40mm, the pitch p is 190m, and the longitudinal section of the head 21 is L-shaped, so that the rubber can be evenly introduced into the main screw. 12 in the screw groove.

As shown in Figure 8, it is the utility model screw rod sectional structure schematic diagram, the screw rod 12,13 thread pusher surface and screw rod 12,13 root diameter surfaces are vertical, and use the circular arc transition connection of radius r1=23mm, the thread back and screw rod 12 1. The surface of the 13 root diameters is connected by a circular arc with a radius of r2=25mm, and the angle A between the back of the thread and the radial plane of the screws 12 and 13 is 15°. This structure can effectively ensure that the screws 12 and 13 do not stick to the material, and It has high conveying function.

As shown in Fig. 9 and Fig. 10, Fig. 9 is a structural schematic diagram of the head of the present utility model; Fig. 10 is a sectional view of the head shown in Fig. 9 at A-A; The first three-dimensional channel 22, the second three-dimensional channel 23 of the conical structure and the tapered three-dimensional channel 24 between the first three-dimensional channel 22 and the second three-dimensional channel 23, the flow channel of this structure has good extrusion properties The sufficient mixing function can ensure that the product is dense and uniform during extrusion, and its size is stable.

When working, the material is added from the feeding hopper 9, and the auxiliary screw 13 cooperates with the feeding section 18 of the main screw 12 to evenly send the material into the barrel 6, and the main screw 12 in the barrel 6 extrudes the plasticizing section 19. After extrusion and plasticization, the metering section 20 is further plasticized, and the material is uniform, and is sent to the head 7 at constant pressure, quantity, and temperature, and is extruded again in the flow channel in the head 7. The compression ratio is input to the die plate to extrude products of various shapes required by the composite process.

The above embodiments only set forth the basic principles and characteristics of the present utility model, and the present utility model is not limited by the above-mentioned embodiments. Under the premise of not departing from the spirit and scope of the present utility model, the present utility model also has various changes and changes. These Variations and changes are within the scope of the claimed invention. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (6)

1. a screw rod feeding sheet extruder, comprise underframe, temperature control system, electric control system, hydraulic control system, actuating unit, described actuating unit comprises motor, reductor and gear distribution box, the first output of described gear distribution box is connected with driving screw, its second output is connected with sub-screw, it is characterized in that: on described underframe, slidably connect hello barrel and material extrusion module, described sub-screw is positioned at hello barrel, the depth of thread of sub-screw is 30～50mm, pitch is 180～200m, the L-shaped structure in longitudinal section of its head, described hello barrel can be connected with the actuating unit being fixed on underframe by locking device, described material extrusion module can be connected with hello barrel by locking device, material extrusion module comprises driving screw, machine barrel, the head being connected with machine barrel and for the die panel of sizing material moulding, the depth of thread of described driving screw is 30～50mm, driving screw comprises the feeding section that is positioned at hello barrel and the extruding fluxing zone that is positioned at machine barrel, metering section, the pitch of described feeding section is 180～200m, the pitch of described extruding fluxing zone is successively decreased successively by one end to the one end of metering section that is close to feeding section, compression ratio is 1:1.5, the pitch of the contiguous feeding section of extruding fluxing zone one end is 180～200m, the pitch of its contiguous metering section one end is 125m, the pitch of described metering section is 125mm, described driving screw, the screw thread back side and the driving screw of sub-screw, the angle of the screw rod sagittal plane of sub-screw is 10～20 °.

2. a kind of screw rod feeding sheet extruder according to claim 1, it is characterized in that: described locking device comprises protruding contract piece and recessed contract piece, the longitudinal section of described protruding contract piece is trapezium structure, and described recessed contract piece, by Driven by Hydraulic Cylinder, has the notch matching with protruding contract piece on it.

3. a kind of screw rod feeding sheet extruder according to claim 1, is characterized in that: the top of described hello barrel is provided with feeding hopper.

4. a kind of screw rod feeding sheet extruder according to claim 1, is characterized in that: the pipeline of described temperature control system and the pipeline of hydraulic control system are all arranged in drag chain.

5. a kind of screw rod feeding sheet extruder according to claim 1, it is characterized in that: described head is assembled by symmetrically arranged upper head, lower head, and on head, be provided with the projection that longitudinal section is trapezium structure, on described machine barrel, be provided with recessed that matches with projection, described recessed by Driven by Hydraulic Cylinder.

6. a kind of screw rod feeding sheet extruder according to claim 1, is characterized in that: the runner of described head comprises that symmetrically arranged cross section is the first stereo channel of conical structure, the second stereo channel and the tapered stereoscopic passage between the first stereo channel, the second stereo channel.