TWM500669U - Cutter - Google Patents

Description

Cutting machine

The present invention relates to a cutting machine, and more particularly to a cutting machine capable of continuous cutting.

Most of the labels are manufactured by screen printing or roller printing, and the label pattern is continuously printed on a film and then attached to the release paper. Due to the poor printing precision of the conventional printing method described above, the pitch precision of the two adjacent label patterns printed is not good, and the spacing is too large or too small, which results in a cutting precision of the label pattern during cutting. low.

In addition, during the cutting process, since the above-mentioned film and release paper are usually supported and transported through the reel, the above-mentioned film and release paper may be slightly elongated and deformed by the supporting force (or tension) of the reels. A slight amount of deformation will result in different spacing of the printed label patterns, which will also result in lower cutting accuracy of such label patterns during cutting.

Therefore, when there is a large error in the spacing of the label patterns, it is often prone to continuous cutting to the label pattern, and usually when such a miscut condition is found, the subsequent series of label patterns may have been cropped. As a result, a large number of defective products are produced, and the production cost thereof is high.

From this, it can be seen that the conventional cutting machine for cutting the label pattern has poor cutting precision, resulting in a low yield of the finished product, thereby increasing the production cost. In order to solve the above problems, it is usually necessary to pass human monitoring and inspection, which not only reduces manufacturing efficiency, but also is inconvenient and increases labor costs.

Therefore, the object of the present invention is to provide a cutting machine which can improve the precision of the cutting alignment to improve the manufacturing yield and reduce the production cost.

Thus, the novel cutting machine is adapted to cut a sheet which continuously extends and is flexible in a conveying direction, the sheet having a first surface printed with a plurality of patterns arranged in the conveying direction, and an opposite to a second surface of the first surface. The cutting machine comprises: a machine table, at least one cutting device, a first detecting device, a second detecting device, and a central control device.

The machine can transport the sheet in the conveying direction. The cutting device is disposed on the machine for cutting a pattern of the sheet, and includes a cutter shaft and a hob shaft respectively rotatably located on opposite sides of the sheet, and one can be controlled a servo motor unit that drives the rotation of the reel shaft; the boring shaft abuts against the second surface of the sheet, the reel shaft can be cut against the sheet on the reel shaft, and A plurality of annular cutting lines are formed on the first surface of the sheet.

The first detecting device is disposed on the machine table and located upstream of the cutting device in the conveying direction, and can take a passing sheet image to detect the spacing of the pattern. The second detecting device is disposed on the machine table and located at a downstream of the cutting device in the conveying direction, and can pass through The image of the sheet is used to detect the distance between the intersecting line and the pattern.

The central control device is disposed on the machine and can receive and analyze images captured by the first detecting device and the second detecting device, and can control the servo motor unit of the cutting device to adjust according to the obtained image data to adjust The speed of the reel shaft.

The utility model has the advantages that: the central control device can receive and analyze the image data captured by the first detecting device and the second detecting device, and determine the distance between the intersecting cutting line and the pattern according to the obtained data, and distinguish Sort the pattern of good and bad products and adjust the rotation speed of the hob shaft. The aforementioned innovative design of automated judgment and control can improve cutting accuracy and manufacturing yield, thereby saving time, labor and cost.

1‧‧‧ machine

11‧‧‧Base

12‧‧‧ reel

2‧‧‧ Cutting device

21‧‧‧Knife drill shaft

22‧‧‧Rolling shaft

221‧‧‧Axis body

222‧‧‧ring cutter

23‧‧‧Servo motor unit

231‧‧‧Servo motor

232‧‧‧Drive roller

233‧‧‧ Gearbox

3‧‧‧First detection device

31‧‧‧First mounting bracket

32‧‧‧First image capture device

33‧‧‧First lighting agency

330‧‧‧First Passage

331‧‧‧First lamp holder

332‧‧‧First light-emitting parts

4‧‧‧Second detection device

41‧‧‧Second mounting bracket

42‧‧‧Second image capturer

43‧‧‧Second lighting agency

430‧‧‧second channel

431‧‧‧Second lamp holder

432‧‧‧second illuminating parts

5‧‧‧Central control unit

6‧‧‧Transport direction

8‧‧‧Sheet

800‧‧‧ pattern

800’‧‧‧ pattern

800"‧‧‧ pattern

81‧‧‧ first surface

82‧‧‧ second surface

89‧‧‧ cutting line

891‧‧‧First trimming

892‧‧‧Second trimming

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a schematic view of a first embodiment of the cutting machine of the present invention; FIG. 2 is the first embodiment. A partial perspective view of the example showing the relationship of a first detecting device of the first embodiment with respect to a sheet; FIG. 3 is a partial perspective view of the first embodiment, showing a second detecting of the first embodiment Figure 4 is a partial plan view showing the cutting line formed on the sheet in a desired position; Figure 5 is a plan view similar to Figure 4, Displaying the crop line generation One of the conditions of the error; FIG. 6 is a top view similar to FIG. 4, showing another condition in which the cutting line produces an error; and FIG. 7 is a schematic view of a second embodiment of the cutting machine of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1, 2, and 3, a first embodiment of the present type of cutting machine is adapted to cut a sheet 8 that extends continuously and in a conveying direction 6 and has a number of edges printed thereon. The first surface 81 of the pattern 800 in the transport direction 6 and a second surface 82 opposite the first surface 81. In practice, the sheet 8 can be comprised of a release paper and a film printed with the pattern 800, and the cutter is used to cut the pattern 800 on the film.

It should be noted that since the pattern 800 is printed on the film, the thickness of the pattern 800 is relatively thin from the side of the sheet 8 and can hardly be observed with the naked eye, but the pattern 800 is illustrated for convenience. In relation to the cutter of the present embodiment, the pattern 800 is illustrated in FIG. 1 by a bold black line segment.

The cutting machine comprises: a machine table 1, and a cutting device 2, a first detecting device 3, a second detecting device 4 and a central control device 5 mounted on the machine table 1.

The machine 1 includes a base 11 and a plurality of left and right extensions A reel 12 that is disposed on the base 11 and that can be driven to rotate. The reels 12 can continuously transport the sheet 8 in the conveying direction 6 so that the sheet 8 is sequentially rolled up through the first detecting device 3, the cutting device 2 and the second detecting device 4 .

The cutting device 2 is disposed on the base 11 of the machine table 1 for cutting the pattern 800 of the sheet 8. The cutting device 2 includes a cutter shaft 21 and a hob shaft 22 which are respectively assembled on the base 11 and are rotatably respectively disposed on opposite sides of the sheet 8, and one is assembled to the base Servo motor unit 23 on 11.

The servo motor unit 23 can be controlled to be driven by the central control unit 5 to drive the reel shaft 22 to rotate. In the present embodiment, the servo motor unit 23 has a servo motor 231 that can be controlled by the central control device 5, a servo motor 231 disposed coaxially with the servo motor 231, and driven by the servo motor 231 to drive the cutter shaft 21 to rotate. A drive roller 232, and a gearbox 233 that is drivingly coupled between the cutter drill shaft 21 and the hob shaft 22.

In other words, in the embodiment, the central control device 5 can control the rotation of the servo motor 231 to rotate the driving roller 232, and the driving roller 232 can drive the rotary shaft 21 to rotate, and then pass through the gear box 233. The drive shaft is connected between the cutter shaft 21 and the hob shaft 22 to drive the hob shaft 22 to rotate. Thus, the rotational speed of the servo motor 231 can be controlled by the central control unit 5 to adjust the rotational speed of the reel shaft 22. The central control device 5 controls the circuit design and control principle of the servo motor 231, and the servo motor 231 drives the reel shaft 22 to rotate. The transmission mechanical design is not the focus of this new improvement, and will not be described in detail here.

The knife drill shaft 21 abuts against the second surface 82 of the sheet 8. The reel shaft 22 is cut to abut against the sheet 8 on the boring shaft 21, and a plurality of annular cutting lines 89 are formed on the first surface 81 of the sheet 8.

The hob shaft 22 has a shaft body 221 that is rotatable by the gear box 233 of the servo motor unit 23, and a ring-shaped cut that protrudes from the outer periphery of the shaft body 221 along the circumference of the shaft body 221. Knife 222. The annular cutter 222 can be rotated in conjunction with the shaft body 221, and the sheet 8 can be cut along the periphery of the gradually passing pattern 800 against the outer peripheral surface of the cutter shaft 21, thereby cutting the sheet. 8 pattern 800.

It should be noted that the number of the annular cutters 222 may be increased according to the length of the pattern 800 to be cut and the diameter of the shaft body 221, and is not limited to the one disclosed in the embodiment.

The first detecting device 3 is disposed on the base 11 of the machine table 1 and located upstream of the cutting device 2 in the conveying direction 6, and can capture the passed image of the sheet 8 to detect the pattern. 800 pitch.

The first detecting device 3 includes a first mounting bracket 31 mounted on the base 11 of the machine base 1, a first image picker 32 mounted on the first mounting bracket 31, and a first image mounter 32 mounted thereon. A first illumination mechanism 33 on the first mounting frame 31 and between the first image capture device 32 and the sheet 8.

The first illumination mechanism 33 can project a light source to the sheet 8, and the first image capture device 32 can be a camera, and can pass through the sheet. The material 8 is imaged, and the image signal is transmitted to the central control device 5 for analysis processing.

In this embodiment, the illumination of the light source is provided by the first illumination mechanism 33, so that the image of the first image capture device 32 can be relatively clear. In practice, the manner in which the first illumination mechanism 33 provides illumination of the light source is not particularly limited.

In this embodiment, the first illumination mechanism 33 has a first socket 331 defining a first passage 330, and a plurality of first illuminators 33 are defined below the first socket 330 and surround the first channel 330. An open first illuminator 332, the first illuminant 332 may be a light emitting diode (LED). The first image picker 32 is aligned with the other opening of the first channel 330, and the passing image of the sheet 8 can be captured through the first channel 330.

Since the first illuminators 332 surround the openings of the first channel 330, a relatively uniform illumination source can be provided. Moreover, the first image capturing device 32 can capture the image of the passing sheet 8 through the first channel 330, and the first light emitting members 332 are surrounded by the first image capturing device 32. Therefore, light and shadow noise such as reflection can be avoided, thereby further improving the image quality of the first image capturing device 32.

The second detecting device 4 is disposed on the base 11 of the machine table 1 and located downstream of the cutting device 2 in the conveying direction 6, and can capture the image of the passing sheet 8 to detect overlapping The distance between the cutting line 89 and the pattern 800.

The second detecting device 4 includes a second mounting bracket 41 mounted on the base 11 of the machine base 1 and a second mounting bracket 41 mounted thereon. The second image capturing device 42 is disposed on the second image capturing device 42 and the second lighting mechanism 43 mounted on the second mounting frame 41 between the second image capturing device 42 and the sheet 8.

The second illumination mechanism 43 can project a light source to the sheet 8, and the second image capture device 42 can be specifically a camera, and can capture the image of the passed sheet 8 and transmit the image signal to the central control. The device 5 performs an analysis process.

In this embodiment, the illumination of the light source is provided by the second illumination mechanism 43 so that the image of the second image capture device 42 can be relatively clear. In practice, the manner in which the second illumination mechanism 43 provides illumination of the light source is not particularly limited.

In this embodiment, the second illumination mechanism 43 has a second socket 431 that defines a second passage 430 in a ring shape, and a plurality of the second sockets 431 are defined below the second socket 431 and surround the second passage 430. An open second illuminating member 432, which may be a light emitting diode (LED). The second image capturing device 42 is aligned with the other opening of the second channel 430, and the passing image of the sheet 8 can be captured through the second channel 430.

Since the second illuminating members 432 surround the opening of the second passage 430, a relatively uniform illumination source can be provided. Moreover, the second image capturing device 42 can capture the passing image of the sheet 8 through the second channel 430, and the second lighting member 432 is in the direction of photography surrounding the second image capturing device 42. Therefore, light and shadow noise such as reflection can be avoided, thereby further improving the image quality of the second image capturing device 42.

The central control device 5 is disposed on the machine table 1 and the center The control device 5 is electrically connected to the first detecting device 3 and the second detecting device 4, and can receive and analyze the images captured by the first detecting device 3 and the second detecting device 4. In addition, the central control device 5 can control the servo motor unit 23 of the cutting device 2 to adjust the rotation speed of the reel shaft 22 according to the obtained image data, so that the reel shaft 22 is on the first surface 81 of the sheet 8. A cutting line 89 formed thereon surrounds the periphery of the pattern 800.

Specifically, the central control device 5 has a program for controlling the servo motor 231 of the servo motor unit 23 to be activated, and can analyze the image captured by the first detecting device 3, and analyze the first through the first Detecting the pitch of the pattern 800 of the device 3, and analyzing the image data of the pattern 800 by using the measured image data of the pattern 800, and controlling the servo of the servo motor unit 23 according to the analysis result. The motor 231 is actuated to adjust the rotational speed of the reel shaft 22.

At the same time, the program built in the central control device 5 can also analyze the image captured by the second detecting device 4, and analyze the distance between the overlapping cutting line 89 and the pattern 800, thereby analyzing the hob shaft 22 The relationship between the rotational speed and the transport speed of the sheet 8 is controlled in accordance with the analysis result to control the rotation of the servo motor 231 of the servo motor unit 23 to adjust the rotational speed of the reel shaft 22.

In use, since the sheet 8 is supported and transported by the reel 12 of the machine 1, the sheet 8 is subjected to the supporting force (or tension) of the reels 12 and is slightly elongated in the conveying direction 6. The aforementioned slight deformation will cause the pitch of the printed pattern 800 to be different, thereby affecting the following manner in which the hob shaft 22 of the cutting device 2 cuts the pattern 800 on the sheet 8. The precision of the alignment.

In order to overcome the above problems, the first detecting device 3 can capture the passing image of the sheet 8 to detect the spacing of the pattern 800, and the sheet 8 is obtained according to the analysis of the central control device 5. The conveying speed and the spacing of the pattern 800, and controlling the operation of the servo motor 231 of the servo motor unit 23 according to the analysis result to adjust the rotation speed of the reel rotating shaft 22, so that the circular cutter of the reel shaft 22 When the 222 is rotated to cut the pattern 800 of the sheet 8, the cutting line 89 formed on the first surface 81 of the sheet 8 can surround the periphery of the pattern 800, thereby obtaining a product having an ideal cutting position, so It does improve the accuracy of the cutting alignment to improve manufacturing yield.

In addition, when the servo motor 231 of the servo motor unit 23 drives the reel shaft 22 to rotate, energy loss may occur due to the transmission, so that the rotation speed of the reel shaft 22 and the predetermined speed are different, so that the roller The position where the annular cutter 222 of the knife rotating shaft 22 makes one turn is somewhat different from the position of the pattern 800. In this embodiment, the second detecting device 4 is further disposed downstream of the cutting device 2 in the conveying direction 6. Through the second detecting device 4, the passing image of the sheet 8 can be captured to detect overlapping. The distance between the cutting line 89 and the pattern 800 is controlled, and the operation of the servo motor 231 of the servo motor unit 23 is controlled according to the analysis result to adjust the rotation speed of the reel shaft 22, thereby improving the manufacturing precision.

Here, the structure of each cutting line 89 will be described. As shown in FIG. 4, each cutting line 89 has a first cutting edge 891 and a second cutting edge 892, and the first cutting edge 891 and the The second trim 892 is located along the edge The upstream and downstream of the conveying direction 6 are.

Referring to FIG. 1, 3, and 5, when the central control device 5 analyzes the image captured by the second detecting device 4, the distance between the pattern 800 and the first trimming edge 891 is less than a predetermined value, or The spacing between the pattern 800 and the second trim 892 is greater than a predetermined value. At this time, the central control device 5 controls the actuation of the servo motor 231 of the servo motor unit 23 according to the analysis result to slow the rotation speed of the reel shaft 22 so as to offset the overlapped cutting line 89 from the pattern 800. As shown in Fig. 4, the product of the cutting position can be obtained.

Referring to FIGS. 1, 3 and 6, when the central control device 5 analyzes the image captured by the second detecting device 4, the distance between the pattern 800 and the first trimming edge 891 is greater than a predetermined value, or The spacing between the pattern 800 and the second trim 892 is less than a predetermined value. At this time, the central control device 5 controls the first conveying unit 11 to increase the conveying speed of the first sheet 7 according to the analysis result, and controls the actuation of the servo motor 231 of the servo motor unit 23 to increase the reel rotating shaft 22 . The rotational speed is such that the distance between the intersecting cutting line 89 and the pattern 800 is as shown in Fig. 4, thereby obtaining a product at the cutting position.

Therefore, it can be seen that, through the above control method, the central control device 5 can receive and analyze the image data captured by the second detecting device 4, and can adjust the roller according to the interval between the overlapping pattern 800 and the cutting line 89. The rotation speed of the cutter shaft 22 and the design of the above-mentioned re-inspection can further improve the precision of the cutting alignment of the present invention, thereby further improving the manufacturing yield.

As can be seen from the above description, the central control device 5 can be connected. The image data captured by the first detecting device 3 and the second detecting device 4 are analyzed, and the distance between the intersecting cutting line 89 and the pattern 800 is determined according to the obtained data, thereby distinguishing between good and bad products. The pattern 800 is adjusted and the rotational speed of the reel shaft 22 is adjusted. The aforementioned innovative design of automatic judgment and control can improve cutting precision and manufacturing yield, thereby saving time, labor and cost, and therefore, the purpose of the present invention can be achieved.

Referring to Figure 7, a second embodiment of the present type of cutting machine is substantially identical to the first embodiment, the difference between the two is that the cutting machine comprises two cutting devices 2, and the central control device 5 The servo motor 231 of the servo motor unit 23 of the cutting device 2 can be alternately controlled according to the obtained image data to drive the hob shafts 22 to alternately cut the patterns 800', 800" on the sheet 8. That is, the cutting devices 2 can be alternately driven by the central control device 5 to perform the cutting operation intermittently, wherein one cutting device 2 is used to cut the odd-numbered pattern 800', and the other cutting device 2 is used to cut the pattern 800" for an even number of times.

Specifically, in this embodiment, the first detecting device 3 can capture the passing image of the sheet 8 to detect the spacing of the patterns 800', 800", and the analysis of the central control device 5 is used to obtain the sheet. The conveying speed of the material 8 and the spacing of the patterns 800', 800", and controlling the actuation of the servo motor 231 of the servo motor unit 23 of the cutting device 2 according to the analysis result to adjust the rolling of the cutting device 2 The rotational speed of the cutter shaft 22 is formed on the first surface 81 of the sheet 8 when the annular cutter 222 of the hob shaft 22 is rotated to cut the pattern 800', 800" of the sheet 8. The distance between the cutting line 89 and the patterns 800', 800" can be as expected, and the cutting position is obtained. I think about the product, so it really improves the accuracy of the cutting alignment to improve the manufacturing yield.

The second detecting device 4 is disposed downstream of the cutting device 2 in the conveying direction 6, and the passing image of the sheet 8 can be taken through the second detecting device 4 to detect the overlapping cutting lines 89 and The patterns 800', 800" are spaced apart, and the actuation of the servo motor 231 of the servo motor unit 23 of the cutting device 2 is controlled in accordance with the analysis result to adjust the rotational speed of the hob shafts 22.

For example, when the analysis of the central control device 5 results in a misalignment between the intersecting cutting line 89 (see FIG. 4) and the odd-numbered pattern 800', as shown in FIGS. 5 and 6, the central control device 5 Controlling the servo motor unit 23 for cutting the odd-numbered cutting device 2 to adjust the rotational speed of the reel shaft 22 for cutting the odd-numbered cutting device 2; when the central control device 5 analyzes When the distance between the overlapping cutting line 89 and the even-numbered pattern 800" is generated as shown in FIGS. 5 and 6, the central control device 5 controls the servo for cutting the cutting device 2 for an even number of times. The motor unit 23 is actuated to adjust the rotational speed of the reel shaft 22 of the cutting device 2 for cutting an even number of times.

Through the above control manner, it can be ensured that the distance between the cutting line 89 (see FIG. 4) formed on the first surface 81 of the sheet 8 and the patterns 800', 800" can be as expected, thereby obtaining a product with an ideal cutting position. Therefore, it is indeed possible to improve the precision of the cutting alignment to improve the manufacturing yield.

However, the above is only an embodiment of the present invention, and it is not possible to limit the scope of the implementation of the present invention. The simple equivalent changes and modifications made by the scope of the patent and the contents of the patent specification are still within the scope of this new patent.

1‧‧‧ machine

11‧‧‧Base

12‧‧‧ reel

2‧‧‧ Cutting device

21‧‧‧Knife drill shaft

22‧‧‧Rolling shaft

221‧‧‧Axis body

222‧‧‧ring cutter

23‧‧‧Servo motor unit

231‧‧‧Servo motor

232‧‧‧Drive roller

233‧‧‧ Gearbox

3‧‧‧First detection device

31‧‧‧First mounting bracket

32‧‧‧First image capture device

33‧‧‧First lighting agency

330‧‧‧ channel

4‧‧‧Second detection device

41‧‧‧Second mounting bracket

42‧‧‧Second image capturer

43‧‧‧Second lighting agency

430‧‧‧ channel

5‧‧‧Central control unit

6‧‧‧Transport direction

8‧‧‧Sheet

800‧‧‧ pattern

81‧‧‧ first surface

82‧‧‧ second surface

Claims (7)

A cutting machine adapted to cut a sheet extending continuously and in a conveying direction, the sheet having a first surface printed with a plurality of patterns arranged along the conveying direction, and a first opposite to the first a second surface of the surface, and the cutting machine comprises: a machine that transports the sheet in the conveying direction; at least one cutting device disposed on the machine for cutting the pattern of the sheet, And including a cutter drill shaft and a hob rotary shaft respectively rotatably on opposite sides of the sheet, and a servo motor unit that can be driven to drive to rotate the hob shaft; the cutter drill shaft abuts against the a second surface of the sheet, the hob shaft is cut to abut against the sheet on the cutter shaft, and a plurality of annular cutting lines are formed on the first surface of the sheet; a first detecting device, Provided on the machine table and located upstream of the cutting device in the conveying direction, and can take a passing sheet image to detect the spacing of the pattern; a second detecting device is disposed on the machine table And located in the cut Positioned in the downstream of the conveying direction, the sheet image passing through can be taken to detect the distance between the intersecting cutting line and the pattern; and a central control device is disposed on the machine and can receive and analyze the The image captured by the first detecting device and the second detecting device, and the servo motor unit of the cutting device is controlled to adjust the rotation speed of the reel rotating shaft according to the obtained image data. The cutting machine according to claim 1, wherein the cutting mechanism of the cutting mechanism The shaft has a shaft body that can be rotated by the servo motor unit, and a peripheral portion protruding along the circumference of the shaft body on the outer peripheral surface of the shaft body and can be pivoted with the shaft body to cut the sheet. Patterned circular cutter. The cutting machine of claim 1, wherein the first detecting device comprises a first mounting bracket mounted on the machine table, a first image picker mounted on the first mounting bracket, and a first illumination mechanism mounted on the first mounting frame between the first image capture device and the sheet, the first illumination mechanism can project a light source to the sheet, and the first image capture The image of the passing sheet can be captured. The cutting machine of claim 3, wherein the first lighting mechanism has a first socket that defines a first passage in a ring shape, and a plurality of the first sockets are mounted on the first socket and surround the first a first light-emitting member of an opening of the channel; the first image picker is aligned with the other opening of the first channel, and the passing image of the sheet is captured through the first channel. The cutting machine of claim 1, wherein the second detecting device comprises a second mounting bracket mounted on the machine base, a second image picker mounted on the second mounting bracket, and a second illumination mechanism mounted on the second mounting frame between the second image capture device and the sheet, the second illumination mechanism can project a light source to the sheet, and the second image capture The image of the passing sheet can be captured. The cutting machine of claim 5, wherein the second lighting mechanism has a second socket that defines a second passage, and a plurality of a second illuminating member mounted on the second socket and surrounding an opening of the second passage; the second image aligner is aligned with the other opening of the second passage and is passable through the second passage Take a picture of the passing sheet. The cutting machine according to any one of claims 1 to 6, wherein the cutting machine comprises two cutting devices, and the central control device can alternately control the servos of the cutting devices according to the obtained image data. The motor unit is actuated to drive the hob shafts to alternately cut the pattern on the sheet.