KR200379546Y1 - Apparatus for cutting plastic pipe - Google Patents

Abstract

The present invention relates to a cutting device for a synthetic resin pipe, that is, to enable a continuous automatic cutting of the double-wall corrugated pipe accurately and easily, a moving frame installed to enable the forward / backward of the device, a drum drive motor, A cutting device for a synthetic pipe comprising a top and bottom rotating drum, a cutting assembly, and a fixed assembly configured to drive first and second forward driving and automatically cutting and processing a pipe moving through a production line; A support assembly fastened to the lower rotating drum to be simultaneously rotated and lifted to the pipe side through engagement with a cylinder installed on the moving frame and supporting a lower surface of the cut portion of the pipe; The fixed assembly side is to be disposed in front of the pipe to be placed on the left / right side of the moving pipe and is inserted into the recessed bone portion of the pipe to be moved through the formation of the elastic structure to lock / secure the pipe while the bone center portion of the pipe Exact position fixing means for positioning the cutting assembly side; Cutting distance adjusting means for adjusting a distance between the moving frame and the cutting assembly to be located at the center of the valley of the pipe; And a drive control means installed at a lower side of the moving frame and configured to control the second forward driving of the fixed assembly according to a switching contact state.

Description

Cutting device for synthetic pipes {APPARATUS FOR CUTTING PLASTIC PIPE}

The present invention relates to a cutting device for automatically cutting a pipe extruded from synthetic resin to a certain length continuously in a pipe production line. More specifically, a double wall corrugated pipe having a concavo-convex surface of a synthetic resin pipe, particularly acid and valleys (aka The present invention relates to a cutting device for a synthetic resin pipe, which cuts the " colgate tube "

Generally, a synthetic pipe produced using various synthetic resins such as polyethylene (PE), polypropylene (PP), styrene resin (ABS), and vinyl chloride (PVC) is supplied with a synthetic resin as a raw material from a hopper, and an extruder equipped with a screw Extruded through a forming die (forming die) and formed into a predetermined shape. The extruded synthetic resin pipe is linearly moved by the moving system of the production line and cut to a certain length by a cutting device.

1 is a schematic configuration diagram showing a cutting device for a synthetic resin pipe according to the prior art.

As shown in FIG. 1, the conventional cutting device 100 for synthetic resin pipes is designed by the present applicant as No. 20-2004-0000971 and registered as No. 348230, the fixed base 101 is installed and the fixed base A rectangular moving frame 102 is installed on the 101 to allow the bearing 103 to be coupled to the front / rear cylinder 104 so as to enable forward / backward of the device. An upper portion of the moving frame 102 is provided. The drum is installed on the drum driving motor 110 is installed on the rotary drum 120 to have a continuous rotational force, and the rotary drum 120 to be rotated at the same time to be rotated at the same time the cylinder installed on the moving frame (102) The cutting assembly 130 which is lowered toward the pipe 10 fixed to the fixed assembly 140 through the combination with the 105 and cut and cut while pressing the pipe 10 with a natural rotational force generated when the pipe is in contact with the pipe assembly 10. , The fixed bed It is composed of a configuration including a horizontal holding roller 150 is coupled on the case 101 and enables the horizontal movement of the pipe 10 moved through the production line.

Here, a description of a more detailed configuration and the action according to the conventional synthetic resin pipe cutting device 100 made in such a configuration is described in detail in the detailed description of the Republic of Korea Utility Model Publication (Registration No. 20-348230) Since it is omitted here.

By the way, the cutting device 100 for a synthetic resin pipe according to the prior art of such a configuration as a configuration mainly intended to cut a common synthetic resin pipe having no irregularities on the surface, it is applied to cut double wall corrugated pipe having a concave-convex surface of the acid and valleys. There were some inadequate disadvantages. In other words, when cutting the double wall corrugated pipe should be cut in the center of the recessed bone portion to provide an easy coupling force when using the joint connection, the cutting assembly 130 side to the center of the bone portion of the double wall corrugated pipe moving through the production line There was no component to accurately position the ring knife, which did not provide ease and accuracy in the cutting of the double wall corrugated pipe.

In addition, the conventional cutting device 100 is configured to arrange the two or more cutting assemblies 130 to the rotating drum 120, the configuration problems that can cause a micro error in the position of each other when the combination of the arrangement and There is a problem that a progress error between the cutter may occur when cutting, thereby causing a problem that the cross-section of the synthetic resin pipe to be cut is not smoothly processed in the same straight line.

The present invention was devised to solve the above problems, and its purpose is to facilitate the continuous automatic cutting of the pipe in connection with the production line of the synthetic resin pipe to be extruded, but the irregularities of the acid and bone shape The present invention provides a cutting device for plastic pipes that can be efficiently applied to cutting double wall corrugated pipes having a surface.

The present invention is to provide a cutting device for the synthetic resin pipe to enable a smooth cutting process as well as to accurately and effectively cut the bone center portion of the double-wall corrugated pipe.

The present invention for achieving the above object includes a moving frame installed to enable the forward / backward of the device, a drum driving motor, up and down rotating drum, cutting assembly and the fixed assembly for the first / second forward drive In the cutting device for a synthetic resin pipe made of a configuration for automatically cutting the pipe moving through the production line; A support assembly fastened to the lower rotating drum to be simultaneously rotated and lifted to the pipe side through engagement with a cylinder installed on the moving frame and supporting a lower surface of the cut portion of the pipe; The fixed assembly side is to be disposed in front of the pipe to be placed on the left / right side of the moving pipe and is inserted into the recessed bone portion of the pipe to be moved through the formation of the elastic structure to lock / secure the pipe while the bone center portion of the pipe Exact position fixing means for positioning the cutting assembly side; Cutting distance adjusting means for adjusting a distance between the moving frame and the cutting assembly to be located at the center of the valley of the pipe; It is installed on the lower side of the moving frame and configured to further comprise a drive control means for controlling the secondary forward drive of the fixed assembly in accordance with the switching contact state is a basic feature in the technical configuration.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings, and through this embodiment, the objects, features, and advantages of the present invention will be better understood.

Figure 2 is a schematic configuration diagram for explaining the cutting device for a synthetic resin pipe according to the present invention, Figure 3 is a detailed view showing the support assembly of the present invention, Figure 4 is to explain the position fixing means of the present invention 5a to 5c is a state diagram for explaining the operating state of the cutting device for a synthetic resin pipe according to the present invention.

As shown in Figures 2 to 5c, the cutting device for synthetic resin pipe 1 according to the present invention is a fixed base 101 is installed, and is installed to slide freely on the fixed base 101 and the forward / backward cylinder Continuous rotational force by chain coupling to the moving frame 102 and the drum drive motor 110 is installed on the upper portion of the moving frame 102 and the moving frame 102 is installed to perform the forward / reverse of the device Fixed assembly through coupling of the upper and lower rotary drums 121 and 122 and the cylinder 105 installed on the movable frame 102 while being simultaneously rotated by being fastened to the upper rotating drum 121. The cutting assembly 130 which is lowered toward the pipe 10 fixed to the 140 and cut and cut while pressurizing the pipe 10 by the natural rotational force formed when contacting the pipe, and on the fixed base 101 Combined The horizontal maintenance roller 150, which enables horizontal movement of the pipe 10 moved through the production line, is fastened to the rotating drum 122 disposed below and rotates simultaneously and installed on the moving frame 102. A support assembly 210 which is lifted toward the pipe 10 and coupled to the cylinder 201 to support the lower surface of the cut portion of the pipe 10, and is fastened on the movable frame 102, but fixed to the fixed assembly ( 140 to be disposed in front of the side and to be placed on the left / right side of the pipe (10) moved to the elastic structure and inserted into the recessed bone portion of the pipe (10) moved through the elastic to block the pipe while fixing / fixing the pipe The center of bone of the pipe 10 is the distance between the fixed position fixing means 220 and the movable frame 102 and the cutting assembly 130 to position the bone center portion of the cutting assembly 130 Location Cutting distance adjusting means 230 to be adjusted so that the drive control means 240 is installed on the lower side of the moving frame to control the secondary forward drive of the fixed assembly 140 in accordance with the state of the switching contact It is made to include.

Here, the pipe 10 refers to a double wall corrugated pipe having an uneven surface of the hill and valley.

The cylinders 105 and 201 installed on the moving frame 102 are connected to the connecting shafts 106a and 106b and the tapered members 107a and 107b which form a tapered slope. The cutting assembly 130 and the support assembly 210 are coupled to the tapered inclined surfaces of the respective taper members 107a and 107b to move the inclined surface by the operation of the cylinders 105 and 201.

The cutting assembly 130 is composed of a bolt transfer (ball transfer) 131, the body 132, the spring 133, the ring knife 134, the fixing pin 135, the coupling relationship and a detailed description thereof Since it is described in Republic of Korea Utility Model Publication No. 20-348230, it will be omitted. In this case, the cutting assembly 130 is preferably installed on the upper side to move the pipe for smooth cutting processing in a straight line when cutting the pipe, this is not particularly limited to the placement error or progression error when performing work If it can be overcome, it may be desirable to combine the two or more cutting assemblies to facilitate the cutting efficiency.

The fixed assembly 140 has one side fastened on the moving frame 102, and the left and right fixing clamps 142 and 143 for fixing the pipe by the operation of the cylinder 141 are moved to the center, respectively. The pipe 10 which is linearly moving through the production line is configured to be fixed, wherein the fixing clamps 142 and 143 are controlled to achieve the forward motion of the first and second orders.

The support assembly 210 is moved up / down by the cylinder 201 and coupled to the taper member 107b and the bolt transferr 211 and the bolt transferr 211 side coupled to the rotating drum 122 A body 212 formed with a long hole 212a to enable fastening and fastening with the body, a body fixture 213 for fastening the body 212 to the rotating drum 122, and the body 212 ) And a support bracket 214 for maintaining the mutual coupling force by the compression spring 215, and a support member 216 is rotatably coupled to the upper side of the support bracket 214, and supports the lower surface of the cut portion of the pipe (10) And a tension spring 217 connected to the body fixture 213 and the support bracket 214 to enable elastic return of the support bracket 214 when the body 212 descends. In this case, an insertion hole is formed in the body fixture 213 and is coupled to the body 212 through the insertion of the fixing pin. The support bracket 214 is formed separately from the body 212 and guides the up / down movement of the body 212 and the lower portion 214a for preventing the separation of the compression spring 215 and the lower portion. It is formed integrally with the upper end of the (214a) consists of an upper portion (214b) for coupling / supporting the support member 216.

The fixed position fixing means 220 is inserted into the guide bracket 221 and the insertion hole 221a of the guide bracket 221 to form an insertion hole (221a) to reduce the diameter to the front side, Some of the fixing locking pin 222 to protrude to the outside of the insertion hole (221a), and the spring is disposed in the insertion hole (221a) of the guide bracket 221 to form the fixing locking pin 222 ( 223).

The cutting distance adjusting means 230 is configured to adjust the distance between the moving frame 102 and the cutting assembly 130 by rotating the handling member 231. More specifically, to adjust the placement interval between the cutting assembly 130 and the fixed position fixing means 220, the fixed position fixing means 220 at the time of cutting the pipe 10, the peak and the valley is standardized at a constant pitch When the fixing locking pin 222 of the pipe is inserted into the valley portion of the pipe assembly 130, the ring knife 134 is correctly positioned on the center of the recessed bone of the pipe (10).

The drive control means 240 is preferably configured as a limit switch, it will be apparent that the position according to the installation may be applied differently depending on the design.

Looking at the action of the cutting device 100 for a synthetic resin pipe according to the present invention made of such a configuration as follows.

First, the cutting distance between the cutting assembly 130 and the fixed position fixing means 220 through the cutting distance adjusting means 230 to be adjusted in advance in accordance with the standard of the pipe 10 to be produced by extrusion.

When the operation of the apparatus is started, the fixing clamps 142 and 143 on the fixed assembly 140 are moved forward in the center direction in the initial state (see FIG. 5A). At this time, the fixed clamp 142, 143 is the first forward movement state (see Fig. 5b) is a fixed locking pin 222 of the fixed position fixing means 220 to the pipe 10 is linearly moved by the production line system ) Is made until the point where it is kept in close contact with the protruding mountain portion, not the recessed bone portion.

When the fixed locking pin 222 is inserted into the valley of the moving pipe 10 and a hook is formed, the moving pipe 10 is temporarily fixed, and the moving frame 102 is moved by the thrust of the moving force of the pipe. Sliding backward on the fixed base 101. At this time, the switching contact of the drive control means 240 is switched from the ON state to the OFF state in accordance with the reverse of the moving frame 102, and at the same time the fixed clamp 142, 143 is secondary to the center direction by this switching signal Moving forward to grab and support the outer surface of the pipe 10 to achieve a stable fixing (see Figure 5c).

Here, when the operation of the fixing clamp 142, 143 is performed at the same time as the insertion / hooking the bone portion of the fixed locking pin 222 is completed, the ring knife 134 of the cutting assembly 130 is adjusted in advance, the pipe 10 Position on the center of the bone.

When the pipe 10 of the linear movement is fixed, the drum drive motor 110 is operated to form a continuous rotational force of low speed in the upper and lower rotary drums 121 and 122, respectively, the cylinder 105, 201 In operation, the cutting assembly 130 and the supporting assembly 210 which are arranged up / down correspondingly are lowered / ascended to the pipe 10 side. At this time, the cutting assembly 130 and the support assembly 210 coupled to the rotating drums 121 and 122 are simultaneously rotated at the same time. Here, the tapered members 107a and 107b coupled to the cylinder 105 and 201 move forward, and the cutting assembly 130 and the support assembly 210 move downward and upward along the tapered slope. At the same time, the body 132, 212 is moved down / up as the portion is sliding.

As the support assembly 210 moves upward, the support member 216 closely supports the lower surface of the cut portion 10 of the fixed pipe 10 due to the rising of the support bracket 214 by the compression spring 215. The ring knife 134 is brought into contact with the center of the valley of the pipe 10 as the downward movement of the 130 moves, and a natural rotational force is formed by the continuous rotational force of the rotating drum 121 and the contact pressure with the pipe 10. This rotational force and the continuous lowering is to cut the cutting while pressing the pipe 10. At this time, the ring knife 134 is a one-touch of the writing method, there is no dust generated when cutting the pipe and the cutting operation is performed at a natural rotational speed of low speed, there is no heat generation and electrostatic action and noise does not occur, so the cutting part of the pipe is straight The support member 216 stably supports the lower surface of the cut portion of the pipe 10 during the cutting operation, while simultaneously supporting the cutting assembly 130 to simultaneously support the cutting assembly 130, thereby improving ease and stability of cutting. To be granted.

When the cutting operation of the pipe 10 is completed, the cylinders 105 and 210 which have been moved forward are retracted, and the cutting assembly is performed by simultaneously connecting the shafts 106a and 106b and the taper members 107a and 107b, respectively. 130 and the support assembly 210 is raised / lowered to return to the original state. In addition, by moving the moving frame 102 forward by the forward operation of the forward / backward cylinder 104 to turn on the switching contact of the drive control means 240 and at the same time the operation of the fixed clamp 142, 143 is released It will return to the initial state. At this time, the body 132 of the cutting assembly is returned to its original shape by sliding up and down while the contracted state of the spring 133 inserted outside is elastically restored, and the support member 216 of the support assembly 210 is formed of the body 212. The tension spring 217, which is extended by the lift, returns to its original state with the downward movement of the support bracket 214 while elastically returning with the lowering of the body 212.

As described above, according to the cutting device for the synthetic resin pipe according to the present invention, the continuous automatic cutting of the double wall corrugated pipe having the concavo-convex surface of the mountain and the valley shape can be easily and efficiently performed on the production line system. Since the ring knife is positioned in the center of the bone, not only enables accurate cutting of the center of the bone, but also enables smooth cutting in a straight line.

In addition, since it supports the lower surface of the cut portion of the pipe, it provides usefulness while providing ease of stability while providing a sense of stability when cutting.

1 is a block diagram showing a cutting device for a synthetic resin pipe according to the prior art.

Figure 2 is a schematic block diagram showing for explaining a cutting device for a synthetic resin pipe according to the present invention.

Figure 3 is a detailed view showing a support assembly of the present invention.

Figure 4 is a conceptual diagram showing for explaining the exact position fixing means of the present invention.

5a to 5c is a state diagram for explaining the operating state of the cutting device for a synthetic resin pipe according to the present invention.

Explanation of symbols on the main parts of the drawings

1: cutting device 102: moving frame

121,122: rotating drum 130: cutting assembly

140: fixed assembly 210: support assembly

214: support bracket 215: compression spring

216: support member 217: tension spring

220: fixed position fixing means 221: guide bracket

222: retaining pin 223: spring

230: cutting distance adjusting means 240: drive control means

Claims (3)

It consists of a moving frame installed to enable forward / reverse of the device, a drum drive motor, up / down rotating drums, a cutting assembly, and a fixed assembly for driving the 1st / 2nd forward driving. A cutting device for a synthetic pipe for automatically cutting a pipe; A support assembly fastened to the lower rotating drum to be simultaneously rotated and lifted to the pipe side through engagement with a cylinder installed on the moving frame and supporting a lower surface of the cut portion of the pipe; The fixed assembly side is to be disposed in front of the pipe to be placed on the left / right side of the moving pipe and is inserted into the recessed bone portion of the pipe to be moved through the formation of the elastic structure to lock / secure the pipe while the bone center portion of the pipe Exact position fixing means for positioning the cutting assembly side; Cutting distance adjusting means for adjusting a distance between the moving frame and the cutting assembly to be located at the center of the valley of the pipe; And a driving control means installed at a lower side of the moving frame and configured to control the second forward driving of the fixed assembly according to a switching contact state. The method of claim 1, wherein the support assembly is moved by the cylinder and the bolt lancer coupled to the tapered member, the bolt lancer side coupled to form a long hole to enable fastening fixed and vertical movement with the rotating drum, A body fixture for fastening the body to the rotating drum, a support bracket for maintaining mutual coupling force by the body and the compression spring, and a support that is rotatably coupled to an upper side of the support bracket and supports a lower surface of the cut portion of the pipe. And a tension spring which is connected to the member and the body fixture and the support bracket to enable elastic return of the support bracket when the body is lowered. According to claim 1, wherein the fixing means is formed in the guide bracket for reducing the diameter to the front side of the insertion hole, and inserted into the front of the insertion hole in the insertion hole of the guide bracket, a part of the protruding out of the insertion hole Cutting device for forming a synthetic resin pipe, characterized in that composed of a spring to be fixed, and the fixing fastening pin is formed in the insertion hole of the guide bracket to form an elastic.