KR20020021666A - Extrusion die plate and cutter assembly with hydraulic motor - Google Patents

Abstract

The die plate 42 for the extruder is connected to the fluid drive prime mover 52 on one side and directly to the extruder 40 on the other side. Appropriate fluid inlet 56 and fluid outlet 60 passages are formed in the die plate for supplying and discharging fluid to prime mover 52. The cutter assembly contains a housing 47 to receive the prime mover 52 and is connected to rotate on the output shaft 64 from the prime mover such that in use the blade 48 mounted to the housing 47 rotates in the path of the extrudate. And cut the extrudate.

Description

Cutter assembly with extrusion die plate and hydraulic motor {EXTRUSION DIE PLATE AND CUTTER ASSEMBLY WITH HYDRAULIC MOTOR}

In the past, cutter assemblies for cutting extrudate have been associated with electrically driven prime movers. Such a cutter assembly will rotate around a fixed axis mounted on the extruder and for rotation the connection to the prime mover is driven by a spool attached to a belt driven by the prime mover, as in US Pat. No. 5,641,529, or a universal drive connected to other drive forces. Can be by connection. Such assemblies are impaired because of the space occupied by the electric prime mover, the associated connecting means, and the structure necessary to support the prime mover unit.

It is an object of the present invention to provide a means for rotating a cutter blade that can be integrated into a cutter assembly to save space and to facilitate the management of an extrusion machine.

The present invention relates to an extrusion machine comprising a die plate, in which an extrudate through the die plate is received and formed, and the extrudate has a cutter assembly having a blade that rotates into the movement path of the extrudate when it exits the die plate. The extrudate is made into individual pieces.

Preferred embodiments of the present invention are disclosed with reference to the accompanying drawings below.

1 is a perspective view showing an extruder connected to an electric drive prime mover.

FIG. 2 is a perspective view similar to FIG. 1 showing an extruder connected to a hydraulic prime mover according to the present invention. FIG.

FIG. 3 is a perspective view showing the housing for the cutter assembly of FIG. 2 away from the hydraulic motor. FIG.

4 is an enlarged view of the area enclosed by the circle of FIG. 3.

5 is a front view of a die plate containing the present invention.

FIG. 6 is a side view of the die plate of FIG. 5. FIG.

FIG. 7 is a rear view of the die plate of FIG. 5. FIG.

8 is a perspective view similar to FIG. 2 showing an extruder connected to a compressed air prime mover according to the invention.

9 shows a back and side cross-sectional view of the die plate of FIG. 8.

According to a first aspect of the invention, the die plate for the extruder is modified such that one side is directly connected to the fluid drive prime mover and the other directly to the extruder. Appropriate fluid inlet and fluid outlet passages are formed in the die plate to supply the prime mover drive fluid to the prime mover and to discharge the fluid.

So Daipan,

First connecting means for connecting the first side of the die plate to an extruder defining a longitudinal axis,

Second connecting means for connecting the second surface of the die plate to the cutter assembly displaceable on the longitudinal axis,

A hole for receiving an extrudate from an extruder and extruding it to be cut to a predetermined length by the cutter assembly,

A fluid inlet passage for receiving and dispensing fluid into the die assembly during use,

A fluid outlet passage for receiving fluid from the cutter assembly and discharging it from the die plate;

The cutter assembly includes a fluid drive prime mover that rotates the cutter in a direction transverse to the longitudinal axis in the travel path of the extrudate to cut the extrudate.

In a preferred form of the invention, the die plate has circumferential ends adjacent to the first and second faces, each of the fluid inlet passage and the fluid outlet passage extending radially toward the center of the die plate through the circumferential end. A radial portion, with each passage terminating at each length extending through the second face of the die plate.

The first and second connecting means preferably comprise a plurality of mounting holes for receiving respective fixing parts through the die plate.

According to a second aspect of the present invention, as an assembly of a die plate and a cutter, the die plate includes:

First connecting means for connecting the first side of the die plate to an extruder defining a longitudinal axis,

Second connecting means for connecting the second surface of the die plate to the cutter assembly displaceable on the longitudinal axis,

A hole for receiving an extrudate from an extruder and extruding it to be cut to a predetermined length by the cutter assembly,

A fluid inlet passage for receiving fluid into the die plate and distributing it to the cutter assembly, and

A fluid outlet passage for receiving fluid from the cutter assembly and discharging it from the die plate;

A cutter assembly coupled to the second face of the die plate and adapted to receive a fluid driving a prime mover from the fluid inlet passage 56 and to discharge the fluid into the fluid outlet passage; And a rotatable cutter driven by the prime mover to rotate in a direction transverse to the longitudinal axis by means of the prime mover to cut water.

The cutter assembly includes a housing that receives the prime mover and is connected to rotate on an output shaft from the prime mover.

In a preferred form of the invention, the rotatable cutter includes a housing connected to the prime mover, the prime mover being housed in the housing. The prime mover preferably comprises an output shaft which can be connected to the housing.

In another preferred form of the invention, the housing has a predetermined separation from the second side of the die plate and blade mounting means for supporting at least one radially extending blade adapted to cut the extrudate exiting therefrom in use. It includes.

The prime mover can be driven by any fluid. A preferred embodiment is a hydro prime mover. Another preferred embodiment is a pneumatic prime mover.

The fluid inlet and outlet passages in the die plate may be insulated from the extrudate outlet holes. It can be insulated by a gap filled with gas. The gas can be air. The gap is preferably located around the fluid passage.

The present invention extends to the perspective of a cutter assembly that connects to a die plate for cutting extrudate coming from the die plate, the assembly being mounted in positioning means, housing, housing for positioning the assembly close to the extrudate outlet. And mounting means for mounting the blade to the housing such that the blade rotates in the movement path of the extrudate exiting the outlet when the fluid drive prime mover, the cutting blade and the prime mover are accommodated.

The positioning means comprise connecting means for connecting the assembly to the die plate such that the blade is positioned at a distance from the die plate.

In a preferred form of the invention, the fluid drive prime mover includes a fluid inlet facing the die plate to receive the drive fluid from the die plate in use. Preferably the inlet is directed to face the corresponding outlet mountable in the die plate.

The extruder 20 in FIG. 1 comprises a longitudinally extending housing, one end of which is connected to the die plate 22. The die plate 22 includes a plurality of die openings 24 to which an extrudate is supplied during operation of the extruder 20. The cutter assembly 26 is mounted to rotate on an axis (not shown) and includes a plurality of radially extending blades 28 which, when rotating, make the extrudate into individual pieces 30. An electric drive prime mover 32 having an axially extending drive shaft 34 is connected to the cutter assembly 26 via a universal drive connection 36 mounted at one end of the cutter assembly 26 away from the extruder 20. It is. The prime mover 32 will have to be supported, for example, with an associated frame to operate the cutter assembly unbalanced.

According to the invention, the mounting and operation of the extruder is considerably simplified by integrating the fluid drive prime mover with the cutter assembly. Now, another embodiment will be described with reference to the remaining drawings. 2 shows a conventional extruder 40 comprising a longitudinally extending housing, one end of which is connected to a die plate 42 according to the invention. The die plate 42 is provided with a plurality of die openings 44 for receiving the extrudate from the extruder 40, in accordance with the existing embodiment. The cutter assembly 46 is associated with the die plate 42 and includes a plurality of blades 48 extending radially to cut the extrudate into individual pieces 50.

As can be seen more clearly in FIG. 3, the cutter assembly 46 includes a cylindrical housing 47 for receiving the hydraulic drive prime mover 52. The prime mover 52 is mounted in the center of the die plate 42 with a mounting bolt 54 (only one of which is shown in FIG. 3). Alternatively, the motor 52 can be located off center of the die plate 42. A hydraulic fluid inlet passage 56 in fluid communication with the hydraulic fluid supply hose 58 is formed in the die plate 42 to be in fluid communication with the hydraulic motor 52. In addition, a hydraulic fluid outlet passage 60 is also formed in the die plate 42 to draw the hydraulic fluid from the hydraulic prime mover 52 by fluid communication with the hydraulic fluid outlet hose 62.

The hydraulic motor 52 includes an output shaft 64 having a key groove 66 extending in the longitudinal direction from the extruder 40 and extending in the longitudinal direction. The output shaft 64 is received through an opening 68 formed at the boss 70 whose one end extends from the housing 47 of the cutter assembly 46 to the opposite side of the longitudinal extruder 40. The second keyway 72 is formed in the opening 68, and the key 74 slides into the keyway 72. The key 74 is located between the key grooves 66 and 72 and the stop screw 76 entering through the hole 78 formed in the boss 70 supports the key 74 to prevent the key from moving in the longitudinal direction. do. This arrangement causes the cutter assembly 46 to be fixed to the output shaft 64 of the hydraulic prime mover 52 so that when the prime mover starts, the blade 48 will rotate to cut the extrudate. There is a predetermined separation between the cutter blade 48 and the outer surface of the die plate 42.

4 to 6 show the die plate 42 in more detail. As is common in the art, the die plate 42 has connecting means for connecting the inner surface of the die plate to the extruder 40, which connecting means are spaced equally around the circumference of the die plate 42. A series of countersunk openings 80 is provided, which are provided with mounting bolts 82 (FIG. 3) and screwed into the screw holes (not shown) provided in the extruder 40.

The die plate 42 includes an inner ring 84 having a series of openings 86 spaced apart at equal intervals, the openings defining respective die nozzles for receiving and extruding the extrudate. In the central portion 88 of the die plate 42, three countersunk openings 90 are formed to accommodate the mounting bolts 54 that fix the die plate 42 to the hydraulic motor 52 (FIG. 3). Countersunk openings 80, 90 are directed in opposite directions such that each side of the die plate is connected to extruder 40 and hydraulic prime mover 52.

Both the hydraulic fluid inlet passage 56 and the hydraulic fluid outlet passage 60 (only one of them in the side view of FIG. 5 are shown as phantom lines) from the circumferential end 92 of the die plate 42 to the central portion 88. And radially extending toward the center, the passage terminates at each longitudinal extension terminating at the front of the die plate 42, in communication with each passage provided in the hydraulic prime mover 52. O-ring seals (not shown) may be mounted to the openings defining the hydraulic fluid inlet passage 56 and outlet passage 60.

By integrating the hydraulic motor with the cutter assembly, the installation of the extruder is considerably simplified, with the added advantage of minimizing the space required to install the extruder and easy maintenance.

8 and 9, another embodiment of the present invention is disclosed, and the die plate 142 connected to the extruder 140 is adapted to receive the pneumatic prime mover 152. Here, as described above with respect to the previous embodiment, the bolt holes 180, 190 enable the die plate 142 to be fixed to the extruder 140 and the prime mover 152, respectively. The prime mover 152 is housed in a cylindrical housing 147 that is pulled back to expose the prime mover. Tubes 158 and 162 supply and exhaust air from die plate 142 and are connected to a compressed air supply system (not shown).

Compressed air tubes 158 and 162 are connected to internal channels 156 and 160 in the die plate 142 body. Surrounding each of the channels 156, 160 is an insulation gap 196, which insulates the heat between the tube and die plate material and the extrudate through the tube and die. The gap is filled with air, and many other gases can be used instead of air.

In the case of the equivalent liquid delivery tube described above with respect to the hydraulic counterpart, the air delivery passage extends radially to the center of the die plate 142 and then the corresponding fluid sphere on the pneumatic prime mover to the center of the die plate 188. Change direction in the axial direction to connect to. The die plate includes a nozzle receptacle 186 for ejecting the extrudate and a mechanical seal 198 for consolidating the connection to the compressor.

Various changes may be made in the preferred embodiment of the present invention within the scope of the appended claims. In particular, although hydraulic and pneumatic prime movers are described, prime movers driven by other fluids may be installed in the above-described apparatus. In addition, according to the needs of those skilled in the art, the keyway connecting the output shaft from the hydraulic motor to the cutter assembly can be modified.

Finally, it is clear that the method of mounting the cutter blade to the cutter assembly can be modified to suit the required application, and it is also clear that one cutting plate is replaced by a plurality of cutting blades.

Claims (16)

As a die plate for an extrusion machine, the die plate 42, First connecting means 80, 82 for connecting the first side of the die plate 42 to an extruder defining a longitudinal axis, Second connecting means 54 for connecting the second face of the die plate to the cutter assembly displaceable on the longitudinal axis, A hole 44 for receiving an extrudate from an extruder and extruding it to be cut to a predetermined length by the cutter assembly, A fluid inlet passage 56 for receiving fluid into a die plate for use and distributing it to a cutter assembly, and A fluid outlet passage 60 for receiving fluid from the cutter assembly and discharging it from the die plate 42; The cutter assembly, when in use, has a fluid drive prime mover that rotates the cutter in a direction transverse to the longitudinal axis in the travel path of the extrudate to cut the extrudate. 2. The die plate of claim 1, wherein the die plate has circumferential ends 92 adjacent to the first and second faces, and each of the fluid inlet passages 56 and the fluid outlet passages 60 is die through the circumferential ends. And a radial portion extending radially toward the central portion (88) of the plate, wherein each passage terminates at each length extending through the second side of the die plate. 3. A method according to claim 1 or 2, characterized in that the first and second connecting means comprise a plurality of mounting holes (80, 90) for receiving respective fixing parts (82, 54) through a die plate. Die plate made with. 4. The die plate according to any one of claims 1 to 3, wherein heat insulating means is provided between the fluid inlet passage and the fluid outlet passage and the extrudate hole. The die plate according to claim 4, wherein the heat insulating means has a gap into which gas can be introduced. As an assembly of a die plate and a cutter, the die plate 42 is First connecting means 80, 82 for connecting the first side of the die plate 42 to an extruder defining a longitudinal axis, Second connecting means (54, 90) for connecting the second face of the die plate to the cutter assembly (46) which is arranged on the longitudinal axis; Holes 44 and 86 for receiving the extrudate from the extruder 40 and extruding it to be cut into a predetermined length by the cutter assembly 46, A fluid inlet passage 56 for receiving fluid into the die plate and distributing it to the cutter assembly 46, and A fluid outlet passage 60 for receiving fluid from the cutter assembly and discharging it from the die plate 42; The cutter assembly 46 is connected to the second face of the die plate to receive fluid driving the prime mover from the fluid inlet passage 56 and to discharge the fluid into the fluid outlet passage 60. And a rotatable cutter driven by the prime mover to cut in the direction transverse to the longitudinal axis in the movement path of the extrudate to cut the extrudate. 7. An assembly according to claim 6, wherein the rotatable cutter comprises a housing (47) connected to the prime mover (52), the prime mover being received in the housing. 8. A housing according to claim 6 or 7, wherein the housing has a predetermined separation from said second side of the die plate and supports at least one radially extending blade 48 adapted to cut the extrudate exiting therefrom in use. Assembly comprising a blade mounting means for. 9. An assembly according to any one of claims 6 to 8, wherein the first and second connecting means comprise countersunk openings (80, 90) facing in opposite directions, respectively. 10. The assembly according to any one of claims 6 to 9, wherein the prime mover (52) is a hydraulic prime mover. 10. The assembly of any one of claims 6-9, wherein the die plate comprises heat insulating means between the fluid inlet passage and the outlet passage and the extrudate hole. 12. The assembly of claim 11, wherein the insulating means comprises a gap. 13. The assembly of claim 12, wherein the gap is filled with gas. As a cutter assembly 46 for cutting an extrudate, Positioning means for positioning the assembly near the extrudate outlet, Housing 47, A fluid drive motor 52 received to be mounted within the housing, Cutting blade (48), and And mounting means for mounting the blade to the housing (47) such that, during operation of the prime mover (52), the blade (48) rotates in the movement path of the extrudate exiting the outlet. 15. The cutter assembly according to claim 14, wherein the positioning means includes connecting means for connecting the assembly to the die plate so that the blade (48) is positioned at a predetermined distance from the plate. 16. The cutter assembly of claim 15, wherein the prime mover includes a fluid inlet facing the die plate to receive the drive fluid.