KR102581527B1 - Vinyl roll bag mentfacturing device - Google Patents

Abstract

The vinyl rollback manufacturing apparatus of the present invention includes a frame; and a support roller that rotates while closely supporting the vinyl fabric in the transport path of the vinyl fabric supplied from the supply roll, and a sealing unit installed on one side of the support roller to form sealing lines at regular intervals on the vinyl fabric being transported, Supported on the frame, including a cutting unit that contacts the support roller on one side of the support roller and rotates to form cutting lines at regular intervals in the vinyl fabric, the outer diameter of the support roller and the rotation trajectory of the toothed knife mounted on the cutting unit A rollback forming portion whose outer diameters are equal to each other, but where the gap between the rotation center of the support roller and the rotation center of the cutting unit is smaller than the outer diameter of the support roller; It is made including.

Description

Vinyl roll bag mentfacturing device}

The present invention relates to a device for manufacturing a vinyl roll bag in which a plurality of vinyl bags are formed continuously so that they can be torn apart and used individually when necessary. The perforation line can be formed stably, and the winding and discharging of the roll bag can be performed stably. It relates to a vinyl rollback and its manufacturing equipment that allows the process to be carried out quickly and accurately.

As you know, a vinyl roll bag is a vinyl bag with perforation lines and sealing lines formed continuously at regular intervals and wound on a roll around a cylindrical paper tube. When necessary, it is unwound from the paper tube and cut into individual sheets along the perforation line. It is a type of plastic bag used to store contents one by one.

Vinyl rollbacks are made by extruding a cylindrical film from an extruder, wrapping vinyl fabric on a flat, cooled tube around a bobbin, and then unwinding the vinyl fabric from the bobbin, processing fusion and partial cutting at regular intervals, and attaching it to a paper pipe. It is manufactured by continuously winding.

For example, Korean Patent No. 10-1165270 (Patent Document 1) includes a sealing means that forms a sealing line by heat-sealing the vinyl fabric transported by the winding unit while being lifted and lowered by the driving unit at the upper and lower surfaces, and a sealing means that is lifted and lowered by the driving unit. An apparatus for manufacturing a vinyl roll bag is disclosed, which includes a cutting means that forms a cutting line on one side adjacent to the sealing line.

However, this rollback manufacturing device not only has low productivity because the transport of the vinyl fabric must be stopped when the sealing means and the cutting means operate, but the overall machine size is large and control is difficult due to the complicated structure.

In addition, Korean Patent No. 10-1202869 (Patent Document 2) discloses a paper pipe fixing part that rotatably supports the paper pipe at a predetermined position so that the vinyl fabric supplied with the perforation line formed is wound around the paper pipe, and can move forward or backward. ; a pressurizing part disposed within a movable range of the paper pipe fixing part and pressing the vinyl fabric when the paper tube fixing part is moved rearward; and a rotational force providing unit that rotates the paper pipe fixing unit, which has completed its rearward movement, at a predetermined angle so that the vinyl fabric is cut along the perforation line. After the force supporting the branch pipe is removed and the branch pipe is discharged to the outside, another branch pipe that needs to be wound is supplied by a branch pipe supply unit that can be raised and lowered toward the branch pipe fixing part and accommodates a plurality of branch pipes, and supports the other branch pipe. , an automatic vinyl fabric winding device is disclosed that moves forward so that the supplied vinyl fabric is wound with a perforation line formed on the other paper pipe.

However, in Patent Document 2, the configuration for supporting the paper pipe and winding the vinyl fabric is complicated, and the paper pipe fixing part is rotated at a predetermined angle to finally discharge the paper pipe on which the rollback has been wound, so the overall operating flow is It was difficult to connect smoothly, so it was not suitable for rapid mass production.

In addition, Patent Document 2 also had the problem of inefficient productivity, such as taking up a lot of space as the overall process was complicated and the size of the machine was increased.

In addition, one of the overall problems in conventional rollback manufacturing equipment is that the contact state of the toothed knife for forming the cutting line with the support roller whose surface is formed of rubber or silicon is unstable, so the surface of the support roller is easily damaged.

To form a cutting line, the toothed knife has no choice but to be set to dig into the surface of the support roller to some extent. Generally, when assembling the toothed knife to a cutting unit, the protrusion length of the tip is adjusted and set using bolts, etc. According to the setting, the rotation trajectory of the tip of the toothed knife increases the outer diameter of the support roller, and accordingly, when the support roller and the toothed knife rotate, the tip of the toothed knife digs into the surface of the support roller in a large circular shape.

Therefore, there was a problem in that the surface of the support roller was easily damaged, causing many defects in the formation of perforation lines in the vinyl fabric, and shortening the lifespan of the support roller.

1. Korean registered patent 10-1165270 2. Korean registered patent 10-1202869

The present invention was created to solve the above-described conventional problems. It accurately forms sealing lines and perforation lines while conveying the vinyl fabric continuously without stopping, and ensures continuous and stable winding and discharge into the paper pipe. The purpose is to provide a vinyl rollback manufacturing device.

Another object of the present invention is to provide a vinyl rollback manufacturing device that simplifies the overall configuration, minimizes the size of the machine, and enables more rapid and stable production of products.

Another object of the present invention is to provide a vinyl rollback manufacturing device in which vinyl fabric is easily wound around a paper pipe while discharging the paper pipe and installing the next paper pipe are performed naturally.

The present invention for achieving the above-described object includes: a frame; and a support roller that rotates while closely supporting the vinyl fabric in the transport path of the vinyl fabric supplied from the supply roll, and a sealing unit installed on one side of the support roller to form sealing lines at regular intervals on the vinyl fabric being transported, It is supported on the frame, including a cutting unit that contacts the support roller on the other side of the support roller and rotates to form a cutting line at regular intervals in the vinyl fabric, and the outer diameter of the support roller and the rotation trajectory of the toothed knife mounted on the cutting unit A rollback forming portion whose outer diameters are equal to each other, but where the gap between the rotation center of the support roller and the rotation center of the cutting unit is smaller than the outer diameter of the support roller; It provides a vinyl rollback manufacturing device comprising a.

Another feature of the present invention is a first support and a second support installed vertically at intervals inside the frame on one side of the rollback forming part; A hopper for supplying branch pipes installed upward between the first and second supports; a rotating shaft supported by the frame and installed to penetrate each of the supports; a first rotating plate and a second rotating plate rotated by the rotating shaft on each support; a fixing plate fixedly installed between the second support and the frame so that the rotation axis passes through the center and having a variable section cut at one edge; a variable cam that is coupled to or separated from the variable section by a pneumatic cylinder in response to the variable section; a high-precision stand fixedly installed inside the first rotating plate; a movable push bar installed facing the high precision bar on the second rotating plate and having a wheel mounted on a rear end to contact the fixed plate; To provide a vinyl rollback manufacturing apparatus further comprising a rollback winding unit comprising a.

The fixing plate may be configured to maintain elasticity with respect to the inner wall of the frame by using a fixing plate spring.

A push spring may be installed at the rear end of the movable pusher so that the movable pusher is elastically biased toward the fixed plate with respect to the second support.

Another feature of the present invention is that an inclined surface that gradually becomes higher in the direction of movement of the movable pusher is formed on the inner surface of the variable cam.

According to the vinyl rollback manufacturing device according to the present invention, by interlocking the support roller, the sealing unit, and the cutting unit in an appropriate combination, the conveyed vinyl fabric is continuously transported without stopping, and sealing lines and perforation lines are accurately formed, and winding and discharging into the paper pipe is carried out. There is an effect that this can be achieved continuously and stably.

The present invention simplifies the overall configuration by simplifying the rollback forming part and the rollback winding part to continuously connect them, thereby minimizing the size of the machine and further improving productivity.

The present invention also provides the effect that the vinyl fabric can be easily wound around the paper pipe and the discharge of the paper pipe and the installation of the next paper pipe can be performed naturally.

1 is a perspective view showing an example of a rollback manufactured according to the present invention.
Figure 2 is a schematic diagram showing the overall process of the vinyl rollback manufacturing device according to the present invention.
Figure 3 is a correlation diagram of the main rollers of the rollback forming part according to the present invention.
Figure 4 is a main configuration diagram of the rollback winding unit according to the present invention.
Figure 5 is a perspective view of the main part of the rollback winding part according to the present invention.
Figure 6 is an exploded perspective view of Figure 4.
Figure 7 is a side view of the rollback winding unit according to the present invention.
Figure 8 is a plan view of Figure 7.
Figure 9 is a perspective view showing another embodiment of a variable cam according to the present invention.
10 to 13 are diagrams showing the operating state of the rollback winding unit according to the present invention.

The specific contents of the present invention will be described in detail with reference to the accompanying drawings as an embodiment as follows. In this process, the thickness of lines or the size of components shown in the drawing may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 shows an example of a roll bag manufactured according to the present invention. The vinyl roll bag (1) is made up of a tubular vinyl fabric (2) formed by a plurality of plastic bags (4) that can be cut and used as sheets of a certain length. It is constructed by winding it into a roll around a cylindrical branch pipe (3).

In the plastic bag (4), sealing lines (5) formed in the width direction of the vinyl fabric (2) are continuously formed at regular intervals along the longitudinal direction of the vinyl fabric (2), and are adjacent to each sealing line (5). Since a perforation line (6) is formed by partially cutting the vinyl fabric (2) in the width direction, it can be cut into single sheets along the perforation line (6).

Figure 2 is a schematic diagram showing the overall process of the vinyl rollback manufacturing apparatus according to the present invention. As such, the rollback manufacturing apparatus of the present invention is largely divided into a rollback forming unit 100 and a rollback winding unit 200, and the overall outer frame (10) is supported.

The rollback forming section 100 is a section that forms a sealing line 5 and a perforation line 6 on the vinyl fabric 2 supplied from the supply roll 20, and includes the supply roll 20, support roller 110, and guide. It is composed of a roller 120, a sealing unit 130, and a cutting unit 140.

The supply roll 20 winds the tubular vinyl fabric 2 and supplies the vinyl fabric 2 along a predetermined transport path.

The support roller 110 is installed on the transport path of the vinyl fabric 2 supplied from the supply roll 20, comes into close contact with the transported vinyl fabric 2, and rotates in the transport direction of the vinyl fabric 2.

The support roller 110 is made of a surface of rubber or silicone with appropriate elasticity for accurate formation of the sealing line 5 and the perforation line 6.

That is, the heating blade 132 of the sealing unit 130 and the toothed knife 142 of the cutting unit 140 rotate and press or stamp the vinyl fabric 2 in close contact with the support roller 110, thereby forming a sealing line ( 5) and the perforation line 6 are formed to maintain appropriate elasticity for more accurate and stable processing.

Two guide rollers 120 are provided so that the vinyl fabric 2 being transported is strongly adhered to the outer periphery of the support roller 110 to guide the transport. At this time, in the present invention, the sealing line 5 and the perforation line 6 of the vinyl rollback 1 are formed while being transported in close contact with one support roller 110, and the two guide rollers 120 are made of vinyl fabric. (2) are preferably located close to each other on the upper side of the support roller 110 so that they can be in close contact with most of the outer circumference of the support roller 110.

The sealing unit 130 is positioned on one side of the support roller 110, for example, to the left in the drawing, appropriately spaced apart. This sealing unit 130 includes a shaft 131 arranged in parallel with the support roller 110, and a heating blade 132 installed on the outer periphery of the shaft 131 in the radial direction of the shaft 131.

The shaft 131 rotates in the direction of travel of the vinyl fabric (2). If the shaft 131 is rotated in the opposite direction to the transport direction of the vinyl fabric 2, not only can it cause trouble in smooth rotation, but also when the heating blade 132 rotates and comes into contact with the vinyl fabric 2, the vinyl fabric 2 may be damaged. This is because there is a risk that (2) may be pushed around and possibly damaged.

The heating blade 132 can be heated to a predetermined temperature by, for example, having a heating wire (not shown) inside, and the vinyl fabric 2 being transported while rotating by the shaft 131 and in close contact with the support roller 110. ) to form a sealing line (5) by instantly heating and compressing the vinyl fabric (2).

This heating blade 132 is configured to adjust the gap with the support roller 110.

The cutting unit 140 is disposed on the other side of the support roller 110, for example, to the right in the drawing, appropriately spaced apart. This cutting unit 140 also includes a shaft 141 arranged in parallel with the support roller 110, and a toothed knife 142 installed on the outer periphery of the shaft 141 in the radial direction of the shaft 141.

The shaft 141 of the cutting unit 140 also rotates in the same direction as the transport direction of the vinyl fabric 2, like the sealing unit 130 described above.

The toothed knife 142 rotates by the shaft 141 and momentarily contacts the vinyl fabric 2 being transported in close contact with the support roller 110 to partially cut one end of the vinyl fabric 2, thereby forming a perforation line 6. ) is formed.

This toothed knife 142 is also configured to adjust the gap with the support roller 110.

In the present invention, only one heating blade 132 of the sealing unit 130 and the toothed knife 142 of the cutting unit 140 may be provided, but as shown in FIG. 2, two of each are provided. It can be mounted on the shafts 131 and 141 at 180° intervals. In this case, one rotation of the shafts 131 and 141 can form two plastic bags 4 on the vinyl fabric 2, In some cases, additional units may be installed radially at equal intervals.

Figure 3 is a diagram showing the correlation between the support roller 110, the sealing unit 130, and the cutting unit 140 according to the present invention. Referring to this, the outer diameter (D) of the support roller 110 and the sealing unit ( The outer diameter (D) of the rotation trace of the tip of the heating blade (132) of the cutting unit (130) and the outer diameter (D) of the rotation trace of the tip of the toothed knife (142) of the cutting unit (140) are set to the same diameter, and the diameter (D) of the tip of the support roller (110) is set to the same diameter. The distance d1 between the rotation center and the rotation center of the cutting unit 140 is set smaller than the outer diameter D of the support roller 110, etc.

Therefore, the tip blade portion of the toothed knife 142 slightly digs into the surface of the support roller 110 when it contacts the support roller 110.

In particular, in the present invention, when assembling the serrated knife 142, it is not simply set by manipulating the tip of the serrated knife 142 to protrude more or less, but rather, the distal end of the serrated knife 142 rotates along the trajectory. Make the outer diameter (D) match the outer diameter (D) of the support roller 110, and then set the distance (d1) between the rotation center of the support roller 110 and the cutting unit 140 to be less than the outer diameter (D). It is important.

Therefore, the sum of the distance d1 between the rotation centers of the support roller 110 and the cutting unit 140 and the depth d2 at which the tip of the toothed knife 142 penetrates the surface of the support roller 110 is the support roller 110. ), etc., should be the same as the outer diameter (D).

When configured in this way, the tip of the toothed knife 142 accurately maintains the contact point to ensure stable contact, and only sawtooth marks are formed on the surface of the support roller 110, and the surrounding area is not nicked.

The support roller 110, the sealing unit 130, and the cutting unit 140 in the rollback forming part 100 configured in this way are rotationally driven by the roller chain 150 driven by the first motor (M1).

Figures 4 to 8 show an embodiment of the rollback winding part. Referring to this, the rollback winding part 200 is continuous with the rollback forming part 100 described above and is supported by the same frame 10.

A first support 201 and a second support 202 are installed vertically at intervals inside the frame 10, and a branch pipe is supplied to the upper side between the first support 201 and the second support 202. A hopper 203 is installed.

In the middle of the rollback winding unit 200, both ends are supported by the frame 10, and the rotation shaft 205 passing through the first support 201 and the second support 202 is driven by the second motor M2. It is installed as much as possible.

A second motor (M2) is provided between the first support 201 and the frame 10 to rotate the rotation shaft 205 by the rotation shaft chain 206.

A first rotating plate 210 and a second rotating plate 220 that rotate together with the rotating shaft 205 are installed on the first support 201 and the second support 202 on the same plane as each support.

A fixing plate 230 is installed between the second support 202 and the frame 10 so that the rotation axis 205 passes through the center, and this fixing plate 230 has a variable section 231 cut at one edge. is formed

And a variable cam 232 corresponding to the variable section 231 is installed inside the frame 10.

The variable cam 232 is installed to be movable in the axial direction of the rotation axis by the pneumatic cylinder 235 and is coupled to the variable section 231 of the fixing plate 230 to form a disk or retreats to open the variable section to empty space. It will be made.

The variable cam 232 occupies a part of the moving trajectory of the wheel 222 of the movable pusher 221, which will be described later, and functions to push the movable pusher 221. For the smooth return of the movable pusher 221, As shown in FIG. 9, an inclined surface 233 can be formed that gradually becomes higher in the direction in which the wheel 222 moves.

A high-precision bar 211 is installed in the axial direction inside the first rotating plate 210, and a movable pushing bar 221 is installed inside the second rotating plate 220 to face the high-precision bar 211 so as to form a rotating axis. It is configured to rotate together with each rotating plate by (205).

In the drawing, two high-precision rods 211 and two movable push rods 221 are installed around the rotation axis 205, but their number may vary as needed.

The high-precision bar 211 and the movable push bar 221 are rotated together by the rotation of each rotating plate 210 and 220 by the rotating shaft 205, and the high-precision bar 211 rotates on its own by driving the third motor (M3). In this way, the vinyl fabric (2) is wound around the branch pipe (3).

That is, the movable push rod 221 only rotates with the second rotating plate 220 by the rotation axis 205, and the high-precision rod 211 can rotate while orbiting with the first rotating plate 210.

The third motor (M3) is installed between the first support 201 and the frame 10 and rotates the high-precision bars 211 by the push chain 212 to wind the vinyl fabric around the paper pipe 3. do.

The drive transmission of each motor applied to the present invention may be a chain or belt.

The facing ends of the high-precision bar 211 and the movable push bar 221 have a conical shape so that they can be easily coupled to the branch pipe (3).

The rear end of each movable push bar 221 penetrates the second support 202 and a wheel 222 is installed at the end, and the wheel 222 is in contact with the fixing plate 230. Accordingly, when each rotating plate rotates by the rotation of the rotating shaft 205, the rear end of the movable pusher 221 moves while rolling and contacting the edge of the fixed plate 230 by the wheel 222.

In addition, a push bar spring 223 is installed at the rear end of the movable push bar 221, and this push bar spring 223 elastically biases the movable push bar 221 backward with respect to the second support bar 202.

Accordingly, the movable pusher 221 is pressed against the fixed plate 230.

A fixing plate spring 236 is also installed at the rear end of the fixing plate 230 to have elasticity with respect to the frame 10.

In the drawing, the unexplained symbol "240" is a holder for temporarily fixing the vinyl fabric wound on the paper pipe while operating by a pneumatic cylinder, and "250" is a cutter for cutting the vinyl fabric.

The overall operation of the present invention as described above is as follows.

10 to 13 are for explaining the operation of the present invention, where angle (a) shows the mutual position of the fixed plate 230 and the movable pusher 221 for each section, and angle (b) shows the rotation axis 205 and the high-precision It shows the mutual relationship between the stem (211), the movable push stem (221), and the branch pipe (3).

First, in the rollback forming unit 100, the vinyl fabric 2 supplied from the supply roll 20 passes through the support roller 110 to form a sealing line by the sealing unit 130 and a perforation line by the tearing unit 140. is formed and is continuously transferred to the rollback winding unit 200.

Figure 10 shows that the supplied vinyl fabric (2) is completely wound on the paper pipe (3) to form a rollback (1), and the cutter is cut in a state where the holder 240 temporarily supports one end of the vinyl fabric (2) by pressing it. (250) shows the state in which cutting is performed.

At this time, the variable cam 232 retreats so that the variable section of the fixing plate 230 is open.

Immediately after cutting is made, the second motor (M2) is driven to rotate the rotating shaft 205, and at the same time, the first rotating plate 210, the second rotating plate 220, the high-precision rod 211, and the movable pushing rod 221 are operated together. It is met.

As shown in FIG. 11, as the rotation shaft 205 rotates, the rear end wheel 222 of the movable push bar 221 moves while making rolling contact with the edge of the fixed plate 230, and when it reaches the variable section 231, the movable push bar 221 Due to the elasticity of the push bar spring (223), it instantly springs and retreats to the position where the variable cam (232) is, and as a result, the branch pipe (3) held between the high precision bar (211) and the movable push bar (221) breaks away. Thus, the rollback (1) as a finished product is discharged.

As shown in FIG. 12, even when the rollback 1 is discharged, the rotation shaft 205 continues to rotate, and the wheel 222 of the movable pusher 221 on the side where the paper pipe is discharged moves on the surface of the variable cam 232. , At this time, the variable cam 232 moves toward the fixed plate 230 by the operation of the pneumatic cylinder 235 and pushes the movable pusher 221.

The variable cam 232 moves until it matches the variable section 231 of the fixed plate 230 and pushes the movable push bar 221. In this process, the high precision bar 211 and the movable push bar 221 are moved to the hopper ( It approaches both sides of the new branch pipe (3) located at 203) and continues to move while holding the new branch pipe (3), and when the movable push bar (221) leaves the variable section of the fixed plate (230), the variable cam (232) retracts again. do.

As shown in Figure 13, the high-precision bar and the movable push bar, which were located at the rear, are positioned forward together with the paper tube, and the rotation of the rotation axis 205 stops, and the vinyl is driven by the first motor (M1) and the third motor (M3). The transfer and winding of the fabric (2) continues.

Such rotation of the rotation shaft 205, driving of the variable cam 232, and driving of the high-precision bar 211 are continuously and repeatedly performed by set sensors and motors.

The present invention as described and shown above is not intended to be limited to the above-described embodiments, and may be implemented in various forms without departing from the gist of the present invention.

1: Vinyl roll bag 2: Vinyl fabric
3: paper pipe 4: plastic bag
5: sealing line 6: perforation line
10 : frame 20 ; supply roll
100: Rollback forming part
110: support roller 120: guide roller
130: sealing unit 131, 141: shaft
132: Heating blade 140: Cutting unit
142: Serrated knife 150: Roller chain
200: Rollback winding attachment
201: first support 202: second support
203: Hopper 205: Rotation shaft
210: first rotating plate 211: high precision stand
220: Second rotating plate 221: Movable pusher
222: wheel 223: push spring
230: fixed plate 231: variable section
232: variable cam 233: inclined plane
235: Pneumatic cylinder 240: Holder
250: Cutter M1,M2,M3: Motor

Claims (5)

frame;
A support roller that rotates while closely supporting the vinyl fabric in the transport path of the vinyl fabric supplied from the supply roll, a sealing unit installed on one side of the support roller to form a sealing line at regular intervals on the vinyl fabric being transported, and the support. It is supported on the frame, including a cutting unit that contacts the support roller on the other side of the roller and rotates to form cutting lines at regular intervals in the vinyl fabric, and the outer diameter of the support roller and the outer diameter of the rotation trace of the toothed knife mounted on the cutting unit. A rollback forming portion that coincides with the rotation center of the support roller and the rotation center of the cutting unit is formed to be smaller than the outer diameter of the support roller; and
A first support and a second support installed vertically at an interval inside the frame on one side of the rollback forming part, a paper pipe supply hopper installed upward between the first support and the second support, and a paper pipe supply hopper installed on the frame. A rotating shaft installed to pass through each of the supports while being supported, a first rotating plate and a second rotating plate rotated by the rotating shaft on each of the supports, and a fixed installation between the second supporting and the frame so that the rotating shaft passes through the center. a fixed plate with a variable section cut out on one edge, a variable cam corresponding to the variable section and coupled to or separated from the variable section by a pneumatic cylinder, a high-precision stand fixed and installed inward from the first rotating plate, and A rollback winding unit installed to face the high precision bar on a second rotating plate and including a movable push bar with a wheel mounted on a rear end and the wheel being pressed into contact with the fixed plate by a push bar spring;
It is made including,
As the rotation axis, the first rotation plate, and the second rotation plate rotate, the fixed precision bar and the movable pusher holding the branch pipes rotate together, and when the wheel of the movable pusher reaches the variable section of the fixed plate, the variable cam retracts from the variable section. Then, the movable pusher elastically retreats to the variable cam retreated by the pusher spring, discharging the interlocking branch tube, and then the variable cam moves forward to match the variable section of the fixed plate by the pneumatic cylinder to push the movable pusher. A vinyl rollback manufacturing device in which a new branch pipe is held between the high-precision rod and the movable push rod while pushing.
delete delete delete According to claim 1,
A vinyl rollback manufacturing device, characterized in that an inclined surface that gradually increases in the direction of movement of the movable pusher is formed on the inner surface of the variable cam.

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