JP3036432U - Packing machine cutter mechanism - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] A cutter mechanism of a packaging machine capable of cutting packaging materials without stagnation or delay. SOLUTION: At least three sets of equal-distance cutters arranged around the outside of the annular groove of the fitting cylinder are synchronously driven by a motor and a belt, and the cutters are rotated at the same time to form an annular groove of the fitting cylinder. The circumference of the shrink film wrapping material at the position of the annular groove can be cut into one circumference from the outer circumference.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of cutter mechanism of a packaging machine, and in particular, it is composed of a kind of simple parts and can synchronously cut a continuous strip-shaped shrinkable film packaging material in equal length. The shrink film shrinkage time of the product is shortened, the delay of the packaging material transportation and the cutting operation during the operation of the packaging machine can be prevented, and the packaging efficiency can be greatly improved.

[0002]

[Prior art]

 The cutter mechanism of the wrapping machine cuts the long strips of continuous wrapping material, such as shrink film wrapping material, into the same length, and the cut wrapping material is fed by the correlated wrapping material transport mechanism on the wrapping machine. After being placed on each packaged item, it is sent to the next step by a conveyor belt.

1, 2, and 3 show a typical packaging machine having the above-described functions, which includes a packaging material winding shaft 11, a fitting cylinder 20, an upper packaging material transport mechanism 30, and the above-mentioned cutter mechanism. The bottom packaging material transport mechanism 40, the electric control device of the correlation, and the like are mounted on the machine body 10 and combined.

As shown in FIGS. 1 and 3, the packaging material winding shaft 11 is used to wind a long continuous strip-shaped shrink film packaging material 12, and the shrink film packaging material 12 is used as a machine. The shrinkage film wrapping material 12 is pushed forward through the material path formed by a large number of guide rollers 13 of the body 10 and is covered outside the fitting cylinder 20. A sensor 14 in the path of travel of the shrink film wrap 12 detects the distance between each one of the transparent portions 15 on the shrink film wrap, which controls the length of cut of the shrink film wrap (12). Since this is a well-known technique, detailed description thereof will be omitted).

As shown in FIG. 2, the fitting cylinder 20 is a single cylindrical body, and a flat guide plate 21 is provided on the upper end thereof to guide and fit the shrink film wrapping material 12. A guide roller 22 is provided on each of the two corresponding wall surfaces of the fitting cylinder 20 and is pressed against the two press rollers of the upper packaging material transport mechanism 30. An annular groove 23 is provided on the fitting cylinder 20 at the bottom end of the guide roller 22, and the annular groove 23 is used by a cutter mechanism, which will be described later, to cut the shrinkable film packaging material 12 covered by the fitting cylinder 20. Two corresponding wall surfaces of the fitting tube at the bottom end of the annular groove 23 are provided with wrapping material withdrawing guide rollers 24, respectively, which guide the shrink film wrapping material 12 cut equidistantly downwardly. Used to do.

As shown in FIGS. 2 and 4, the upper packaging material transport mechanism 30 transmits the power of the motor 31 to the two belts 33 via the gears 32, thereby driving the two parallel shafts 35. Rotated in opposite directions, the press rollers 36 and 37 provided at the ends of the two shafts 35 respectively press the guide rollers 22 on the two corresponding wall surfaces of the fitting cylinder 20, so that the two horizontal shafts 35 A shaft coupler 34, which can change the angle in the axial direction, is provided, whereby the distance between the press rollers 36 and 37 can be changed by rotating the handle ring 38, and the two press rollers 36 and 37 can be tightly attached. The fitting cylinder 20 can be sandwiched, and the fitting cylinder 20 is vertically hung inside the machine body by the guide rollers 22 on the two corresponding wall surfaces on the fitting cylinder 20 which are pressed by the two press rollers 36 and 37. When the motor 31 is placed in a stationary state and the power is turned on and the motor 31 rotates, the two press rollers 36 and 37 rotate the guide rollers 22 that are in contact with each other, whereby the fitting cylinder 20 is stationary and immobile. In this state, the shrink film wrapping material 12 between the two press rollers 36 and 37 and the two guide rollers 22 outside the fitting cylinder 20 is pushed downward by the pressure and drive of the two press rollers 36 and 37. It has a structure that

As shown in FIG. 3, when the shrink film wrapping material 12 continuously pushed downward passes through the annular groove 23 portion of the fitting tube 20, a cutter mechanism described later cuts it at equal distances. Then, the shrink film wrapping material cut by the bottom wrapping material transport mechanism 40 is propelled onto the conveyor belt 16 at the bottom end of the machine body, and is covered on the outside of each one packaged object 17.

As shown in FIGS. 2 and 3, the bottom wrapping material transport mechanism 40 has a structure and function similar to that of the top wrapping material transport mechanism 30. The shafts are driven to rotate, and the press rollers 43 provided at the ends of the two shafts 42 are respectively fitted to the bottom side wall surfaces of the cylinder 20 (the other shaft and the press roller are not shown in the figure). ), Thereby pushing each one shrink film wrap 12 down. Similar to the top packaging material transport mechanism 30, the bottom packaging material transport mechanism 40 is configured so that the handle ring 44 of the bottom packaging material transport mechanism 40 can adjust the tightness of pressure between the two press rollers 43. A handle ring 45 installed vertically upward is used to adjust the height of the bottom packaging material transport mechanism 40. With the above structure, the shrink film packaging material 12 cut into various different lengths is obtained. Is sent.

Most of the cutter mechanism used to cut the long continuous strip-shaped packaging material during the entire operation of the packaging machine described above is provided around the fitting cylinder 20 on the machine body. The cutting operation is completed by a single cutter that rotates around the annular groove 23, or the cutting portion is provided at the lowest end of the fitting cylinder 20 and the shrink film wrapping material 12 is cut by the shear cutter that is pushed by the compression cylinder. It was something to do. These traditional cutter mechanisms had obvious drawbacks. For example, in the former case, a single cutter that performs rotary motion is thrust into the annular groove, and a cutting and propelling orbit, a swivel orbit, and a transmission mechanism such as a pulley are required to move around the fitting tube. However, this occupies a relatively large volume of the fuselage, and since there are many related parts, the structure becomes complicated and the production cost becomes high. The latter requires necessary members such as a pressure source and a compression cylinder, and similarly has a defect that the volume is large and the combined structure is complicated.

[0010] In addition, it is necessary to suspend the ejecting operation of the upper packaging material transport mechanism 30 and the bottom packaging material transport mechanism 40 during the cutting operation with either the rotary cutter or the shear-shaped cutter. Alternatively, after the shearing cutter completes the operation of reopening after cutting, it is necessary to re-inject the shrink film wrapping material 12 into these packaging material transport mechanisms, and conversely, at the same time when the packaging material transport mechanism ejects the shrink film packaging material 12. It was necessary to stop the cutter mechanism for a while, and then the shrink film wrapping material 12 was ejected to reach a fixed position to restart the cutting operation. In this way, the traditional cutter mechanism clearly forms stagnation and delay during operation, and cannot continuously cut the packaging material, which slows down the packaging speed and lowers the production efficiency. Moreover, each transmission member was easily damaged, and the service life of the equipment was short.

[0011]

[Problems to be solved by the device]

 In view of the drawbacks of the cutter mechanism of the traditional packaging machine, the present invention has a special structure with a kind of simple combination parts to improve it, and has a long continuous strip shape with synchronous operation. It is intended to provide a cutter mechanism of a packaging machine that can cut the shrink film packaging material of the present invention into equal lengths, make the operation of the packaging machine more accurate and effective, and have creativity. .

Specifically, the main problem of the present invention is to drive at least three sets of equidistantly fitted cutters around the outside of the annular groove of the cylinder by a motor and a belt, and drive the cutters in the same manner. By rotating it in time, you can instantaneously cut the circumference of the shrink film packaging material at the annular groove position from the outside of the annular groove of the fitting tube, greatly reducing the contact time when cutting the cutter and shrink film packaging material. However, it is an object of the present invention to provide a kind of cutter mechanism for a packaging machine that enables the cutting operation to be performed easily and quickly.

Another object of the present invention is to enable a plurality of cutters to rotate synchronously to perform a cutting operation, reduce a temporary stop time of transport of a shrink film packaging material to a minimum extent, and significantly reduce the packaging machine. It is an object to provide a kind of packing machine cutter mechanism that can improve the operation efficiency.

[0014]

The invention of claim 1 is a packaging machine equipped with a packaging material winding shaft, a fitting cylinder, an upper packaging material transportation mechanism, a cutter mechanism, and a bottom packaging material transportation mechanism. A long continuous strip-shaped shrink film wrapping material is wrapped around the shaft, the shrink film wrapping material is covered on the fitting cylinder, and the upper wrapping material transport mechanism holds the fitting cylinder with two press rollers and the cutter mechanism is fitted. Cut the shrink film wrapping material covered on the tube, and the bottom wrapping material transport mechanism uses two transport press rollers to cut each shrink film wrapping material, and cut each shrink film wrapping material on the conveyor belt at the bottom edge of the machine. In the above packaging machine for propelling onto a package, a plurality of cutters provided around the outside of the fitting cylinder are provided, and by rotating each cutter at the same time, outside the annular groove of the fitting cylinder, Also make a circumferential cut with Wherein the a is a, and a packaging machine of the cutter mechanism.

A second aspect of the present invention is the cutter mechanism of the packaging machine according to the first aspect, wherein the cutter mechanism is at least one motor and a plurality of transmission belts, and the rotational power of each is one. The one used for transmitting to the cutter, three or more cutter shafts and the same number of cutters, are equidistantly annularly fitted and provided outside the cylinder, and one end of each cutter shaft is connected to each other by the transmission belt. A cutter is fixed to the other end, each cutter shaft rotates in the same direction synchronously with each one cutter, and it is fitted to the front end of each one cutter and passes through the inside of the annular groove of the cylinder. It is used as the cutter mechanism of the packaging machine.

A third aspect of the present invention is the cutter mechanism of the packaging machine according to the first aspect, in which the cutter mechanism is provided with one backing plate and two sensors, and is driven by the rotational power of the motor. When the corresponding plate is driven and each sensor is triggered, the temporary stop and re-driving of the upper packaging material transport mechanism are controlled, and the shrinkable film packaging material pushed by the upper packaging material transport mechanism is very short. The cutter mechanism of the packaging machine is characterized in that it can be stopped outside the fitting cylinder within the temporary suspension time.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention includes a packaging material winding shaft, a fitting shaft, an upper packaging material transportation mechanism, a cutter mechanism, and a bottom packaging material transportation mechanism, and a continuous long strip wound around the packaging material winding shaft. A band-shaped shrink film packaging material is covered on the fitting cylinder, the fitting cylinder is sandwiched by two press rollers of the upper packaging material transport mechanism, and the shrink film packing material on the fitting cylinder is cut by the cutter mechanism. The bottom wrapping material transport mechanism injects each one shrink film wrapping material cut into the same length by two transporting press rollers in order onto each one wrapping material on the conveyor belt at the bottom end of the machine, In a kind of packaging machine, the cutter mechanism is driven by a motor and a belt, and at least three sets of equidistantly fitted cutters arranged around the outside of the annular groove of the cylinder are driven in synchronization, and each cutter is operated at the same time. And rotate it around the outside of the annular groove of the fitting tube. Characterized that you have to be able to cut the periphery of the shrink film wrapping material of the ring-shaped groove located in one of the circumferential.

[0018]

【Example】

 As shown in FIGS. 2, 3 and 5, the cutter mechanism 50 of the present invention is mounted on the body of the upper packaging material transport mechanism 30 and the bottom packaging material transport mechanism 40 in the packaging machine, and is fitted to the outside of the fitting cylinder 20. It is used for cutting the placed continuous strip-shaped shrinkable film packaging material 12 into equal lengths.

As shown in FIG. 5, the cutter mechanism 50 includes a motor 51, transmission belts 52 and 54, at least three or more cutter shafts 53, the same number of cutters 55 as the cutter shafts 53, and one cover plate. 56, and the first sensor 57 and the second sensor 58 are combined.

A transmission belt 52 is provided on the output shaft of the motor 51, the transmission belt 52 transmits rotation power to each one cutter shaft 53, and a stop plate 56 is fixed to the upper end of the output shaft. Two sensors 57 and 58 are provided at appropriate positions on both sides of the output shaft. The rotating stop plate 56 is detected by the first and second sensors 57 and 58, and a sequence signal for motor rotation is transmitted. . Each one of the cutter shafts 53 is provided longitudinally and equidistantly around the above-mentioned fitting cylinder 20, and the upper ends of the one cutter shafts 53 are connected to each other by a transmission belt 54 to transmit the rotational power of the motor 51. This allows each one cutter shaft 53 to rotate synchronously and in the same direction, and at the bottom end of each one cutter shaft 53, a cutter 55 is fixed laterally and one cutter shaft 53 The bottom end of the cutter shaft 53 exhibits 90 degrees, and when each one cutter shaft 53 rotates synchronously, each cutter 55 is driven and rotated, and the front edge of each cutter 55 is fitted. The cutting operation is performed by passing through the annular groove 23 on the cylinder 20 and rotating around the annular groove 23 in synchronization.

Please also refer to FIGS. In the packaging machine to which the above-mentioned cutter mechanism is attached, when the motor 51 is activated and rotates, each one cutter 55 cuts one circumference outside the annular groove 23 on the fitting cylinder 20, so that the fitting cylinder 20 The shrinkable film wrapping material 12 on the outside is cut, and the contact plate 56 on the output shaft of the motor 51 does not stop rotating, so that the first sensor 57 and the second sensor 58 are respectively triggered. By design, when the backing plate 56 triggers the first sensor 57, the upper wrapping material transport mechanism 30 that urges the shrinkable film wrapping material 12 is controlled to temporarily stop the feeding operation, and the shrinkable film wrapping material 12 is fitted. The cutters 55 are made to stand still outside the cylinder 20, so that the cutting can be easily performed by each one cutter 55. When the cutter 55 is separated from the shrink film packaging material 12 outside the fitting cylinder 20 after the cutting operation is completed, the backing plate 56 triggers the second sensor 58, which activates the upper packaging material transport mechanism 30. Then, the shrink film wrapping material 12 is continuously sent, and by repeating this cycle, the cutter mechanism operates continuously, and the operation is not stopped.

It is necessary to provide at least three or more cutter shafts 53 and cutters 55 of the above-described cutter mechanism 50, and in the present embodiment, six cutter shafts 53 and 55 are provided. Different numbers of cutters result in different cutting contact surfaces between the cutters and the shrink film wrap. That is, the smaller the number of installed cutters, the longer the cutting contact surface between each one cutter and the shrink film wrapping material (see FIG. 7), and the longer the time for temporarily suspending the feeding operation of the upper wrapping material transport mechanism 30. Therefore, if the cutting contact surface between each one cutter and the shrink film wrapping material becomes short, the time for temporarily suspending the feeding operation of the upper wrapping material transport mechanism 30 becomes short. However, no matter how many cutters there are, the cutter mechanism of the present invention can be operated continuously and does not need to be stopped for a while. Maximum efficiency can be achieved for the entire machine.

[0023]

[Effect of the invention]

 As described above, the cutter mechanism of the present invention is capable of orderly cutting a continuous strip of long strip material in a synchronized operation by the simplest combination structure of parts, and transporting the shrink film packaging material during the cutting operation. In this way, the temporary suspension time can be shortened to the shortest, the delay of the packaging material transportation and the cutting operation during the operation of the machine can be prevented, and the packaging efficiency can be greatly improved, and the above-mentioned problems can be achieved.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a packaging machine.

FIG. 2 is a view showing the components of a packaging machine to which the present invention is attached, in which the shrink film packaging material in the figure is not yet covered by the fitting cylinder.

FIG. 3 is a view showing the components of a packaging machine to which the present invention is attached, in which the shrink film packaging material in the figure has already been put on the fitting cylinder.

FIG. 4 is a combination view of the upper packaging material transport mechanism in the packaging machine.

FIG. 5 is a perspective view of a cutter mechanism of the present invention.

FIG. 6 is a cutting locus display diagram of one embodiment of the cutter mechanism of the present invention.

FIG. 7 is a cutting locus display diagram of another embodiment of the cutter mechanism of the present invention.

[Explanation of symbols]

 10 Airframe 11 Packaging material winding shaft 12 Shrinkable film packaging material 13 Guide roller 14 Sensor 15 Transparent part 16 Conveyor belt 17 Packaged object 20 Fitting cylinder 21 Guide plate 22 Guide roll 23 Annular groove 24 Packaging material extraction guide roller 30 Upper packaging material transportation Mechanism 31 Motor 32 Gear 33 Belt 34 Shaft Coupler 35 Shaft 36, 37 Press Roller 38 Handle Ring 40 Bottom Packaging Material Transport Mechanism 41 Motor 42 Shaft 43 Press Roller 44 Handle Ring 45 Handle Ring 50 Cutter Mechanism 51 Motor 52 Belt 53 Cutter Shaft 54 belt 55 cutter 56 contact plate 57 first sensor 58 second sensor 59 cutter locus

Claims (3)

[Utility model registration claims] 1. A packaging machine equipped with a packaging material winding shaft, a fitting cylinder, a top packaging material transportation mechanism, a cutter mechanism, and a bottom packaging material transportation mechanism, wherein a long strip continuous shrink film packaging is provided on the packaging material winding shaft. The material is rolled, the shrink film wrapping material is covered on the fitting cylinder, the upper packing material transport mechanism sandwiches the fitting cylinder with two press rollers, and the cutter mechanism cuts the shrink film wrapping material covered on the fitting cylinder. Then, the bottom packaging material transport mechanism pushes each one shrink film packaging material already cut by the two transport press rollers onto each one packaged object on the conveyor belt at the bottom end of the machine body. Therefore, it is said that a plurality of cutters provided around the outside of the fitting cylinder are provided, and each cutter is rotated at the same time to jointly perform circumferential cutting outside the annular groove of the fitting cylinder. The feature of the packaging machine is that Tar mechanism. 2. The cutter mechanism of the packaging machine according to claim 1, wherein the cutter mechanism is used for transmitting rotational power to each one cutter by at least one motor and a plurality of transmission belts. Are installed on the outside of the cylinder by equidistantly annularly fitting three or more cutter shafts and the same number of cutters.One end of each cutter shaft is connected to each other by the transmission belt, and the cutter is fixed to the other end. Each of the cutter shafts rotates in the same direction in synchronization with each one of the cutters and is fitted to the front end of each one of the cutters to pass through the inside of the annular groove of the cylinder. Cutter mechanism. 3. A cutter mechanism for a packaging machine according to claim 1, wherein one cutter plate and two sensors are provided in the cutter mechanism, and the corresponding plate is driven by rotational power of a motor. By triggering each sensor, the temporary stop and re-driving of the upper packaging material transport mechanism are controlled, and the shrinkable film packaging material sent by the upper packaging material transport mechanism moves to the outside of the fitting tube within a very short temporary time. The cutter mechanism of the packaging machine, which is characterized by being stationary.