KR20130025060A - Shooting out, extrusion and industry screw thread part and cutting apparatus - Google Patents

Abstract

PURPOSE: A cutter for cutting the screw thread part of a screw for injection, extrusion and industry is provided to elaborately cut a part welded in the screw thread part side while moving along a lathe apparatus. CONSTITUTION: A cutter for cutting the screw thread part of a screw for injection, extrusion and industry comprises a first adjusting part(110), a second adjusting part(120), a third adjusting part(130), and a cutting part(140). The first adjusting part comprises a first supporting block(111), a first rotary shaft(112), and a first adjusting handle(113). The first supporting block is installed in a transfer working board(101) which is movably installed from a bed(1) of a lathe apparatus. The first adjusting handle adjusts the rotation angle of the first rotary shaft. The second adjusting part comprises a second supporting block and a second adjusting handle(123). The second adjusting handle adjusts the rotation angle of forward and backward direction of a second rotary shaft(121). The third adjusting part comprises a third supporting block(132) and a third adjusting handle(133). The third adjusting handle adjusts angle of left and right inclination of a third rotary shaft(131). The cutting part includes the cutter. The cutter cuts a part welded in the screw thread part side on the rotary shaft in which a driving pulley(P2) is installed.

Description

Shooting out, extrusion and industry screw thread part and cutting apparatus

The present invention relates to a screw cutting and cutting device, and more particularly, to weld the welded portion to the thread angle on the lathe machine to reinforce the screw thread of the injection screw installed in the cylindrical cylinder to convey the molten resin. Regarding the thread cutting and cutting device of injection, extrusion and industrial screw, which can improve the manufacture, production and quality of the injection screw by efficiently working the thread cutting that was done by hand by accurately setting the cutting cutter angle. will be.

In general, in the case of an injection molding machine or an extruder, a screw is used as a key component.

The screw serves to feed the molten plastic material (resin) to the mold side while rotating.

1 shows a configuration of a general injection molding machine.

Usually, the injection molding machine is provided with the cylindrical cylinder 10, and the cylinder head 11 and the nozzle 12 are provided in the front surface of the said cylinder 10.

In addition, the cylinder 10 is mounted with a screw 20 having a diameter almost close to the inner diameter of the cylinder.

The screw 20 is composed of a screw shaft 21 and the threaded portion 22, the screw head 25 is mounted on the front surface of the screw shaft 21 through a seal 23 and the check ring 24 .

In addition, the other end of the screw shaft 22 is connected to the rotary motor 31 driven by the hydraulic cylinder (30).

In addition, the cylinder 10 is equipped with a hopper 50 into which a pellet or flat piece of plastic material is introduced, and a heater 40 for melting the plastic material introduced into the cylinder, and the cylinder nozzle 12 includes a mold ( 60) is connected to the structure.

Look at the operation of the injection molding machine configured as described above.

First, when the plastic material is introduced into the cylinder 10 through the hopper 50, the injected material is heated by the heater 40, the mold through the cylinder nozzle 12 while mixing and melting by the rotation of the screw 20 Injection into 60.

The melt injected into the mold 60 is cooled in a mold whose temperature is adjusted to release from the mold, and at the same time the screw 20 starts a new injection molding cycle and the cooled molding is released.

Looking at such injection molding, the screw 20 mounted inside the cylinder 10 is a component that performs an operation of melting and mixing high temperature plastic materials, and should be able to withstand high temperature environments.

Such a screw 20 is exposed to a high temperature environment, and when used for a certain period of time, a particular portion is worn out, thereby preventing its function. Herein, the specific portion refers to the thread portion.

Therefore, the screw which has been used for a certain period of time and has lost its function should be replaced. However, the screw has been expensive because of the expensive equipment, and the new manufacturing period of the screw is also considerably long, leading to various uneconomical problems of screw replacement.

In the screw, the threaded portion of the screw nearly close to the inner diameter of the cylinder forms a weld coating 22a having a predetermined thickness on the threaded portion in order to minimize outer surface wear.

The welding coating part can form the welding coating part 22a by continuously forming the welding bead in the low rotational motion of the string mounted on the shelf while the welding gun is repeatedly transported from side to side according to the width of the thread part through the welding device. Will be.

Usually, as described above, the weld coating 22a has a bead formed in a shape in which a central upper portion protrudes bulge with respect to the width of the threaded portion, as shown in FIG. 2A. As shown in 2b, the upper portion of the weld coating 22a is flattened as shown in the drawing, and is cut to have dimensions close to the inner diameter of the cylinder.

In the process of cutting the welding coating portion 22a as described above, the outer diameter of the welding coating portion is processed using a tool mounted on a lathe machine, and the side surface of the thread portion, that is, the thread portion, is threaded by the operator using a handy grinder. The welding coating of the screw was processed in the form which cuts the side of a part.

However, as described above, the side portion of the threaded portion is the work of cutting the threaded portion using the hand grinder simultaneously with the rotation of the screw mounted on the lathe machine. There is a problem that any one part is excessively cut to reduce the quality of the screw.

In addition, the manual work as described above not only takes a long time, but also has a high precision, the precision of the processing dimensions, as well as the manufacturing productivity of the screw was significantly reduced.

The present invention has been invented to solve the conventional problems as described above, the object of the lathe machine is to install a welded portion to reinforce the threaded portion of the injection screw installed in the cylindrical cylinder to convey the molten resin by pressure The screw thread of injection, extrusion and industrial screw to improve the production, production and quality of injection screw by efficiently working the thread cutting which was done by hand by effectively setting the cutting cutter angle to the thread angle effectively It is to provide a secondary cutting and cutting device.

According to the present invention for achieving the above object, in the cutting and cutting device for processing the welded screw thread side of the injection screw,

The cutting and cutting device includes a conveying work table which is installed to be transported from the bed of the lathe machine; A first support block is installed on the transfer operation object, and a first rotation shaft is provided at the center of the first support block, and a first adjustment handle is provided at one side of the first support block to adjust the rotation angle of the first rotation shaft. A first adjusting unit; A second adjusting block having a second supporting block provided with a second rotating shaft on an upper portion of the first rotating shaft, and a second adjusting unit provided with a second adjusting handle on one side of the second supporting block for adjusting a forward and backward rotation angle of the second rotating shaft; Both sides are rotatably installed on the second rotation shaft, and a third support block having a third rotation shaft in the center thereof is installed, and a third adjustment for adjusting the left and right tilt angles of the third rotation shaft on one side of the third support block. A third adjusting part provided with a handle; A fourth rotary shaft connected to the third rotary shaft is provided at the center of the support, and a drive pulley is installed at the upper portion of the support from the rotational shaft of the drive motor and the drive motor, and a lower portion of the rear side of the support corresponds to the drive pulley to power the belt. It is characterized in that it comprises a driven pulley is provided, the cutting portion is provided with a cutting cutter for cutting the threaded side surface welding portion of the screw on the rotating shaft is installed driven driven pulley.

The rotating shafts of the first adjusting handle, the second adjusting handle and the third adjusting handle according to the present invention are embedded in the first supporting block, the second supporting block, and the third supporting block, respectively, and a worm gear is provided on the embedded rotating shaft. The first support block, the second support block, and the third rotation block are respectively embedded in the first rotation shaft, the second rotation shaft, the third rotation shaft is provided with a helical gear that is engaged with the worm gear is characterized in that the rotation angle is adjusted It is done.

The screw thread cutting and cutting device for injection molding according to the present invention can easily adjust the angle of the cutting cutter to the threaded side angle of the screw to precisely cut the welded portion of the screw while transferring along the lathe machine. Since it is possible to efficiently work the side cutting operation of the thread portion using the existing manual hand grinder, there is an effect that can improve the production, production and quality of the injection screw.

1 is a configuration diagram showing an overall resin extrusion apparatus applied to a general injection screw
Figure 2 is an enlarged cross-sectional view showing a part after cutting the welding coating portion of the screw in the prior art,
3 and 4 is a perspective view showing a screw thread cutting and cutting device of the present invention,
5 is a front view showing an angle adjustment state of the cutting cutter according to the present invention,
Figure 6 is a plan view showing an angle adjustment state of the cutting cutter according to the present invention,
Figure 7 is a side view showing an angle adjustment state of the cutting cutter according to the present invention,
8 is an enlarged view illustrating a state in which a cutting cutter is positioned on a side surface of a screw thread according to the present invention;
9 is a partially enlarged cross-sectional view showing a state in which a threaded side surface of a screw according to the present invention is processed.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 9.

The present invention, in the cutting and cutting device 100 for processing the welded threaded portion 22 side of the injection screw 20,

The cutting and cutting device 100 is divided into a first adjusting unit 110, a second adjusting unit 120, a third adjusting unit 130 and a cutting unit 140.

The first adjusting unit 110 is a first support block 111 is installed on the transport workbench 101 to be transported from the bed (1) of the lathe machine, the upper portion of the center of the first support block 111 A first rotation shaft 112 is provided, and a first adjustment handle 113 for adjusting the rotation angle of the first rotation shaft 112 is provided at one side of the first support block 111.

The second adjustment unit 120 has a second support block 122 is provided on both sides of the first rotation shaft 112, the second support block 122, the second support shaft 122, the second rotation shaft A second adjustment handle 123 for adjusting the forward and backward rotation angle of the 121 is provided.

The third adjustment unit 130, both sides are rotatably installed on the second rotation shaft 121, the third support block 132 is provided with a third rotation shaft 131 is provided in the center, the third support block ( One side of the 132 is provided with a third adjustment handle 133 for adjusting the left and right tilt angle of the third rotary shaft 131.

The cutting unit 140 has a fourth rotary shaft 141 which is connected to the third rotary shaft 131 is provided in the center of the support 142, the upper portion of the support 142, the drive motor (M) and the rotary shaft of the drive motor The driving pulley P1 is installed from the lower side of the support 142, and the driven pulley P2 corresponding to the driving pulley P1 and powered by the belt V is provided with a driven pulley P2. The cutting cutter 143 for cutting the welding part of the side surface of the threaded part 22 of the screw 20 is provided on the installed rotating shaft.

Meanwhile, as shown in FIGS. 5 to 7, the rotation shafts of the first adjustment handle 113, the second adjustment handle 123, and the third adjustment handle 133 are the first support block 112. And embedded in the second supporting block 122 and the third supporting block 132, respectively, and a worm gear WG is provided on the embedded rotating shaft, and the first supporting block 112 and the second supporting block 123 are provided. The helical gears HG, which are engaged with the worm gears WG, are provided on the first rotation shaft, the second rotation shaft, and the third rotation shaft respectively embedded in the third support block 133 to adjust the rotation angle of each part.

For reference, the first adjusting unit 110, the second adjusting unit 120, and the third adjusting unit 130 are provided with fixing means that can be fixed after adjusting the rotation angle of each of the rotating shafts, respectively, the transfer working table 101 The adjusting handle that can adjust the horizontal movement and the forward and backward position along the feed screw axis on the lathe machine side is adjustable. This part is found to be identical to the principle of operating a tool post in a lathe.

Reference numeral 22a in the drawing refers to a weld coated portion.

Referring to the operation according to the operation of the screw cutting and cutting device for injection screw configured in the present invention as follows.

First, the outside of the threaded portion of the screw is welded using a welding device (not shown in the drawing) installed on the bed 1 of the lathe machine with both ends of the injection screw 20 mounted on the chuck and tailstock of the lathe machine. Coating.

In this case, the welding coating part 22a is weld coated to the side surface of the spiral including the outside of the attached threaded part 22, and after the slag is removed from the welding coating part, the welding coating outer surface using the tool post of the lathe machine. Cut to the required thickness.

As described above, the welding coating portion 22a is cut as shown in FIG. 8, and the side portion coated with the side surface of the threaded portion in the state in which the outer diameter portion of the threaded portion is processed is cut according to the present invention. Cutting processing is performed in a state in which the cutting cutter 143 of the cutting part 140 is set to match the spiral angle of the threaded part 22 with 100.

The cutting cutter 140 angle of the cutting unit 140 is adjusted by adjusting the first adjusting unit 110, the second adjusting unit 120, and the third adjusting unit 130 constituting the cutting device 100. Can be adjusted at an angle that matches the threaded portion 22.

When the first adjustment unit 110 rotates the first adjustment handle 113 provided on the first support block 111 on the conveying work table 101, the first rotating shaft 112 on the first support block 111 rotates. Thereby, the cutting part 140 including the 2nd adjustment part 120 and the 3rd adjustment part 130 is adjusted by rotating to the left or the right direction generally.

At this time, the cutting cutter 143 is adjusted as extracted in Figure 5 attached to be able to approximately adjust the position of the screw portion 22 of the screw 20.

When the second adjustment handle 123 of the second adjustment unit 120 is rotated and adjusted in the above state, as shown in FIG. 6, the third adjustment unit 130 and the cutting unit 140 have a second rotation shaft. The angle adjustment is performed in the front-rear direction by the rotation of 122.

In addition, when the third adjustment handle 133 of the third adjustment unit 130 is turned left or right, the cutting is performed by the rotation of the third rotation shaft 132 connected to the second support block 121 of the second adjustment unit 120. The unit 140 may adjust the cutting cutter 143 in a left or right tilt direction as illustrated in FIG. 7.

For reference, the first control handle 113, the second control handle 123, the third control handle 133 is provided with a worm gear (WG) on the rotation axis, each corresponding to match the worm gear (WG) Helical gears are provided on the first rotating shaft 112, the second rotating shaft 122, and the third front shaft 132 to rotate the helical gear HG engaged with the worm gear WG, which is caused by the rotation of the handle. The rotation angles of the first rotating shaft 112, the second rotating shaft 122, and the third rotating shaft 132 can be finely adjusted.

In addition, as a separate fixing means by limiting the rotation of the first rotary shaft 112, the second rotary shaft 122, the third front shaft 132 at an angle requiring the position of the cutting cutter 143 of the cutting unit 140 It can be fixed.

As described above, the first adjusting unit 110, the second adjusting unit 120, and the third adjusting unit 130 adjust the angle of the cutting cutter 143 as shown in FIG. In consideration of the depth to be cut with respect to the threaded portion 22 of the screw 20 can be set by adjustment.

Simultaneously with the rotation of the injection screw 20 according to the driving of the lathe machine in the setting is completed as described above, the conveying work table 101 is horizontally moved along the bed 1 of the lathe machine, at this time cutting unit 140 The drive motor (M) which constitutes) is started.

Rotational drive of the drive motor (M) rotates the driven pulley (P2) through the belt (V) from the drive pulley (P1) on the rotating shaft, the cutting cutter (143) installed on the rotating shaft of the driven pulley (P2) While rotating at high speed, the threaded portion 22 side of the screw 20 can be uniformly cut.

In the above state, the opposite side of the threaded portion 22 converts and adjusts the direction of the cutting cutter 143 as shown by the dashed-dotted line as shown in FIG. The side of the weld coating 22a of 22 is cut and processed to complete the spiral side machining of the screw 20 as shown in FIG. 9.

Therefore, the side surface of the welded threaded part 22 can be processed evenly compared to the cutting operation using the conventional hand grinder, and can improve the production of the injection screw with a significantly faster operation than the existing work. This is provided.

1: bed 20: screw
22: thread 100: cutting and cutting device
101: conveying table 110: first adjusting section
111: first support block 112: first rotating shaft
113: first adjusting handle 120: second adjusting unit
121: second support block 122: second rotating shaft
123: second adjusting handle 130: third adjusting unit
131: third support block 132: third rotary shaft
133: third adjustment handle 140: cutting portion
141: fourth rotating shaft 142: support
143: cutting cutter M: drive motor
P1: driven pulley P2: driven pulley
V: belt

Claims (2)

In the cutting and cutting device 100 for processing the welded threaded portion 22 side of the injection screw 20,
The cutting and cutting device 100,
The first support block 111 is installed on the conveying work table 101 which is installed to be transported from the bed 1 of the lathe machine, and the first rotating shaft 112 is provided at the center of the first support block 111. A first adjusting part 110 provided at one side of the first supporting block 111 and having a first adjusting handle 113 for adjusting a rotation angle of the first rotating shaft 112;
The second support block 122 having the second rotation shaft 121 is provided above the first rotation shaft 112, and the forward and backward rotation angle of the second rotation shaft 121 is provided at one side of the second support block 122. A second adjusting unit 120 provided with a second adjusting handle 123 for adjusting;
Both sides are rotatably installed on the second rotation shaft 121, and a third support block 132 having a third rotation shaft 131 is provided at the center thereof, and a third rotation shaft at one side of the third support block 132. A third adjusting unit 130 provided with a third adjusting handle 133 for adjusting the left and right tilt angles of the 131;
The fourth rotary shaft 141 connected to the third rotary shaft 131 is provided at the center of the support 142, and the driving pulley P1 is formed on the upper portion of the support 142 from the rotational shaft of the driving motor M and the driving motor. Is installed, the lower back of the support 142 is provided with a driven pulley (P2) corresponding to the drive pulley (P1) and the power transmission as a belt (V), the screw 20 on the rotating shaft is installed driven pulley (P2) Thread cutting part cutting and cutting device of the injection, extrusion and industrial screw, characterized in that configured; including; cutting section 140 is provided with a cutting cutter 143 for cutting the side welded portion of the thread 22. The method of claim 1,
The rotation axis of the first adjustment handle 113, the second adjustment handle 123 and the third adjustment handle 133 is the first support block 112, the second support block 122, the third support block 132 ), Each of which is provided with a worm gear (WG) on the embedded rotary shaft, and the first rotary shafts embedded in the first support block 112, the second support block 123, and the third support block 133, respectively. , The second rotary shaft, the helical gear (HG) to be engaged with the worm gear (WG) on the third rotary shaft is provided, cutting and cutting device of the screw thread of the injection, extrusion and industrial screw, characterized in that the rotation angle of each part is adjusted.

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