TWI869030B - Horizontal packaging machine - Google Patents

Abstract

A horizontal packaging machine includes a cam drive group, a control module, a bag pulling device and a film group. The cam drive group has an encoder for outputting the rotation information of a rotating shaft. The control module is connected to the encoder signal. The bag pulling device is used to clamp a film material and move it along a conveying direction. The film cutting group includes a front cutting device, and also includes one of a scissors device and a rear cutting device. The front cutting device and the rear cutting device both have at least one telescopic cylinder connected to the control module signal. Through the control module, it is possible to select to start the front cutting device or the rear cutting device to cut the film material to form a plurality of packages. The present invention can improve production efficiency.

Description

Horizontal packaging machine

The present invention relates to a packaging machine, in particular to a horizontal packaging machine.

A horizontal automatic packaging machine is a production equipment used to automatically fill materials into packaging bags. For example, the cam spindle transmission device disclosed in the utility model patent announcement number CN2695356Y of the People's Republic of China can perform various mechanical actions in the packaging process. The cam spindle transmission device includes a rotatable spindle and a plurality of cams fixed to the spindle and driven by the spindle. The cams are divided into bottom sealing cams, vertical sealing cams, bag cutting cams, bag grabbing mechanism cams, bag pulling cams, bag opening mechanism cams, filling sliding mechanism cams, bag sealing cams and bag clamping mechanism cams according to their functions.

Since the cams of the aforementioned cam spindle transmission device will move simultaneously, if the machine needs to be modified to produce packaging bags of different shapes, or to form easy-tear edges or cut out different rounded corners, it is necessary to replace multiple molds at one time. The machine modification time is long, which will extend the production time and reduce production efficiency.

Therefore, the purpose of the present invention is to provide a horizontal packaging machine that can improve production efficiency.

Therefore, the horizontal packaging machine of the present invention is suitable for conveying a continuous film material along a conveying direction and forming a plurality of packages filled with materials. The horizontal packaging machine includes a cam drive unit, a control module, a sealing unit, a bag pulling device, a film cutting unit, a bag opening device, a filling device, a sealing unit and a bag receiving device.

The cam drive assembly includes a cam drive, a rotating shaft driven by the cam drive, and a plurality of cams spaced apart on the rotating shaft. The cam drive has an encoder for outputting information about the rotation of the rotating shaft. The control module is signal-connected to the encoder. The edge-sealing assembly is driven by the cam drive assembly and is used to press the side edges of the film material and form a plurality of spaced-apart containing spaces for the film material. The bag-pulling device is arranged behind the edge-sealing assembly along the conveying direction, and includes two roller shafts extending along a height direction perpendicular to the conveying direction, and a bag-pulling driver signal-connected to the control module and connected to one of the roller shafts. The roller shafts are used to clamp the film material and move it intermittently along the conveying direction.

The film cutting group is arranged behind the edge sealing group along the conveying direction. The film cutting group is used to cut the film material to form the packaging pieces, and each of the packaging pieces is formed with the containing space, multiple rounded corners, and at least one easy-tear opening. The film cutting group includes a front cutting device, and also includes one of a scissor device and a rear cutting device. The front cutting device and the rear cutting device both have at least one telescopic cylinder connected to the control module signal, and at least one tool driven by the telescopic cylinder to cut the film material.

The bag opening device is arranged behind the film cutting group along the conveying direction, and is driven by the cam driving group and is used to open the containing space of each of the packages. The filling device is arranged behind the bag opening device along the conveying direction, and is used to fill the material into the containing space of each of the packages. The sealing group is arranged behind the filling device along the conveying direction, and is driven by the cam driving group and is used to press the top end of each of the packages and seal its containing space. The bag receiving device is used to drive the packages to be conveyed along the conveying direction, and the bag receiving device includes two slides that move back and forth along the conveying direction and clamp the packages.

The effect of the present invention is that since the telescopic cylinders of the front cutting device, the second cutting device and the rear cutting device are all connected to the control module by signal, the user only needs to operate the control module to select to start the front cutting device, the second cutting device or the rear cutting device to cut the film material. If the front cutting device and/or the second cutting device is to be used, the rear cutting device only needs to be replaced with the scissor device without replacing the entire film cutting group. Therefore, the present invention can shorten the machine modification time and improve production efficiency.

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

Referring to Fig. 1 and Fig. 2, a first embodiment of the horizontal packaging machine of the present invention is suitable for conveying a continuous film material 91 along a conveying direction X and forming a plurality of packages 92 filled with materials (not shown). The horizontal packaging machine comprises a cam drive unit 11, a control module 12, a sealing unit 2, a bag pulling device 3, a film cutting unit 4, a bag opening device 5, a filling device 61, a bag unfolding device 62, a sealing unit 7 and a bag receiving device 8. The material can be powder, granular, paste, liquid or a mixture thereof. The film material 91 is a plastic roll and is continuously fed into the horizontal packaging machine through a film placing mechanism (not shown).

The cam drive assembly 11 includes a cam drive 111, a rotating shaft 112 driven by the cam drive 111 to rotate, and a plurality of cams 113 spaced apart on the rotating shaft 112. The cam drive 111 has an encoder 114 for outputting information about the rotation of the rotating shaft 112. The encoder 114 can convert mechanical displacement into a coded address to feedback a position. The encoder 114 is a technology that converts commonly used rotational quantity and mechanical displacement into analog or digital signals, and has many variations. Since a person with ordinary knowledge in the field can infer the expanded details based on the above description, no further description is given.

The control module 12 is signal-connected to the encoder 114. The control module 12 of the first embodiment is a programmable logic controller (PLC), but may also be other digital controllers such as a computer.

1 , 2 and 4 , the edge sealing assembly 2 is driven by the cam drive assembly 11 , and the edge sealing assembly 2 is used to press the side edge of the film material 91 and form a plurality of spaced containing spaces 90 on the film material 91 . Since the package 92 of the first embodiment is a four-side sealed flat bag type for illustration, the edge sealing assembly 2 of the first embodiment includes a bottom sealing device 21 connected to one of the cams 113 and used for hot-pressing and fusing the bottom end of the film material 91, a hot side sealing device 22 connected to another cam 113 and used for hot-pressing and fusing the film material 91 along a height direction Z perpendicular to the conveying direction X to form the containing spaces 90, and a cold side sealing device 23 connected to another cam 113 and used for pressurizing the film material 91 again along the height direction Z. Since the cold side sealing device 23 is used to assist in strengthening the bonding strength of the edge sealing, in some embodiments, the cold side sealing device 23 can be omitted from the edge sealing assembly 2. In some other variations, for example, when the packaging component 92 is a triangular stand-up bag, the bottom sealing device 21 can be omitted from the edge sealing assembly 2 .

The bag-pulling device 3 is arranged behind the edge-sealing assembly 2 along the conveying direction X, and includes two roller shafts 31 extending along the height direction Z, and a bag-pulling driver 32 connected to the control module 12 by signal and connected to one of the roller shafts 31. The roller shafts 31 are rotated relative to each other by the bag-pulling driver 32, and the film material 91 is clamped and moved intermittently along the conveying direction X.

The film cutting unit 4 is arranged behind the edge sealing unit 2 along the conveying direction X. The film cutting unit 4 is used to cut the film material 91 to form the packaging pieces 92, and each of the packaging pieces 92 is formed with the containing space 90, a plurality of rounded corners 921, and two easy-tear openings 922. The film cutting unit 4 includes a front cutting device 41 between the edge sealing unit 2 and the bagging device 3, a second cutting device 42 between the front cutting device 41 and the bagging device 3, and a scissor device 43 arranged behind the bagging device 3.

Referring to FIGS. 4 to 6 , the front cutting device 41 is used to form the rounded corners 921 on each of the packaging parts 92. The front cutting device 41 has two first molds 411 spaced up and down for the film material 91 to pass through, two first telescopic cylinders 412 respectively disposed on the first molds 411 and connected to the control module 12 (see FIG. 1 ) by signal, two first cutters 413 respectively disposed on the first telescopic cylinders 412, and two chip removal tubes 414 respectively mounted on the first molds 411. Each of the first molds 411 has a channel 415 for the film material 91 to pass through, and a punching hole 416 connected to the channel 415 and for the corresponding first cutter 413 to extend into. The channel 415 and the punching hole 416 are perpendicularly intersected. Each of the first telescopic cylinders 412 is a pneumatic cylinder and has a cylinder body 417 fixed to the corresponding first mold 411, and a piston rod 418 telescopically arranged on the cylinder body 417. Each of the first cutters 413 is fixed to the front end of the respective piston rods 418, and can be driven by the respective first telescopic cylinders 412 to extend into the corresponding punching holes 416, and punch the predetermined shapes of the fillets 921 in the film material 91. Each of the chip discharge tubes 414 is arranged outside the respective punching holes 416 and is used to discharge the chips generated when punching the film material 91. Specifically, the encoder 114 captures the rotation information of the rotating shaft 112 and then feeds it back to the control module 12 (i.e., PLC), and then the control module 12 controls the electromagnetic valve (not shown) of the first telescopic cylinder 412 to start or close. In this way, the front cutting device 41 can operate synchronously with the cam drive assembly 11.

The second cutting device 42 is used to form the easy-tear openings 922 on each of the packaging pieces 92. The structure and operation principle of the second cutting device 42 are similar to those of the front cutting device 41, and the difference is only in the change of the mold, the knife, and the number of the telescopic cylinder, which will not be repeated here.

By controlling the control module 12, the front cutting device 41 or the second cutting device 42 can be selectively activated, and both can also be activated.

Referring to FIG. 1 and FIG. 4 , the scissor device 43 is disposed behind the bag-carrying device 3 along the conveying direction X. The scissor device 43 of the first embodiment is connected to one of the cams 113 and driven by the cam drive assembly 11. The scissor device 43 is used in conjunction with the front cutting device 41 and the second cutting device 42. The scissor device 43 is used to cut the film material 91 and separate the packaging pieces 92 of a single package. In some embodiments, the scissor device 43 can also be driven by a pneumatic cylinder.

Referring to FIG. 1 , FIG. 3 and FIG. 7 , the bag opening device 5 is disposed behind the film cutting unit 4 along the conveying direction X. The bag opening device 5 is driven by the cam drive unit 11 and is used to push open the containing space 90 (see FIG. 4 ) of each package 92. The bag opening device 5 of the first embodiment includes an upper bag opening unit 51 for pulling open the upper half of each package 92, a pushing unit 52 for pushing the two side edges of each package 92, and a lower bag opening unit 53 for pulling open the lower half of each package 92. The multi-directional bag opening design in which the upper bag opening unit 51 sucks the front and back sides of the upper half of the package 92, the lower bag opening unit 53 sucks the front and back sides of the lower half of the package 92, and the pushing unit 52 pushes the left and right sides of the package can avoid the problem of the package 92 bending in the middle, so that the bag opening effect is better.

The filling device 61 is arranged behind the bag opening device 5 along the conveying direction X. The filling device 61 is a material barrel and is used to fill the material into the containing space 90 of each of the packaging parts 92. The filling device 61 of the first embodiment is driven by electricity and connected to the control module 12 by signal. Thereby, the filling device 61 can operate synchronously with the cam drive assembly 11.

The bag spreading device 62 is located after the filling device 61 and is used to flatten the top of each package 92 after filling.

The sealing assembly 7 is arranged behind the bag spreading device 62 along the conveying direction X. The sealing assembly 7 is driven by the cam drive assembly 11 and is used to press the top end of each package 92 and seal its containing space 90. The sealing assembly 7 of the first embodiment includes a first sealing device 71 for hot-pressing and fusing the top end of each package 92 and sealing its containing space 90, and a second sealing device 72 installed behind the first sealing device 71 and used to pressurize the top end of each package 92. In some variations, the sealing assembly 7 can omit the second sealing device 72.

In the first embodiment, before the sealing assembly 7 is sealed, the top of each package 92 is first flattened by the bag unfolding device 62, thereby improving the sealing performance of the sealing assembly 7 on each package 92.

Referring to Fig. 1, Fig. 3 and Fig. 8, the bag receiving device 8 is used to drive the packages 92 to be intermittently transported along the conveying direction X to perform packaging processes such as bag opening, filling, bag opening and sealing. The bag receiving device 8 of the first embodiment includes a carrier 81, a bag receiving driver 82 driven by electric power to drive the carrier 81 to move back and forth along the conveying direction X, two slides 83 that move back and forth along the conveying direction X and clamp the packages 92, and two pull rods 84 spaced apart and pivotally connected to the carrier 81 and the slides 83. The two opposite ends of each pull rod 84 are pivotally connected to the carrier 81 and one of the slides 83. The bag receiving driver 82 is a servo motor and is connected to the control module 12 by signal. Thereby, the bag receiving driver 82 can operate synchronously with the cam drive assembly 11. In some variations, the bag receiving device 8 can also adopt a bag receiving mechanism driven by the cam drive assembly 11.

Therefore, after the film material 91 is fed into the horizontal packaging machine, the packaging processes such as bottom sealing, side sealing, film cutting, bag opening, filling, bag opening, and sealing can be carried out in sequence along the conveying direction X to produce the packages 92 filled with the material.

Referring to FIGS. 9 to 11 , a second embodiment of the present invention is similar to the first embodiment, and the difference is that:

The scissor device 43 (see FIG. 4 ) of the film cutting group 4 is removed and replaced with a rear cutting device 44 .

The rear cutting device 44 is arranged behind the bagging device 3 along the conveying direction X. The rear cutting device 44 has a third mold 441 for the film 91 to pass through, a third telescopic cylinder 442 arranged on the third mold 441 and connected to the control module 12 (see FIG. 1 ) by signal, and a third cutter 443 arranged on the third telescopic cylinder 442. Specifically, the encoder 114 captures the rotation information of the rotating shaft 112 and then feeds it back to the control module 12 (i.e., PLC), and then the control module 12 controls the electromagnetic valve (not shown) of the third telescopic cylinder 442 to start or close. In this way, the rear cutting device 44 can work synchronously with the cam drive assembly 11. The third mold 441 has a channel (not shown) for the film material 91 to pass through, and a punch hole 445 connected to the channel 444 and for the corresponding third tool 443 to extend into. The third mold 441 of the second embodiment is composed of a plurality of modules 446. The third telescopic cylinder 442 is a pneumatic cylinder. The third tool 443 has a special-shaped punch 447 driven by the third telescopic cylinder 442, and a hole plate 448 for the special-shaped punch 447 to pass through and for pressing the film material 91. The special-shaped punch 447 has a special shape, and can separate the packaging parts 92 while the special-shaped punch 447 passes through the orifice plate 448 and extends into the punch hole 445 to cut the film material 91, and form the rounded corners 921 and the easy-tear openings 922 on each of the packaging parts 92.

Therefore, the second embodiment can determine whether to activate the rear cutting device 44 by operating the control module 12. Since the rear cutting device 44 has the functions of forming the rounded corners 921, the easy-tear openings 922 and separating the packaging pieces 92 when activated, the front cutting device 41 and the second cutting device 42 are in the closed state.

Referring to FIG. 12 , a third embodiment of the present invention is similar to the second embodiment, and the difference is that:

The function of cutting the rounded corners 921 and the easy-tear openings 922 is integrated with the function of cutting and separating the packaging pieces 92. Therefore, the film cutting unit 4 of the third embodiment includes the front cutting device 41 and the rear cutting device 44, that is, the second cutting device 42 is omitted (see FIG. 4). The front cutting device 41 is also used to form the rounded corners 921, while the rear cutting device 44 is used to form the easy-tear openings 922 and cut and separate the packaging pieces 92. During operation, the front cutting device 41 and the rear cutting device 44 are both in the activated state. It is understandable that, in other variations, the front cutting device 41 can be used to form the tearable openings 922 , while the rear cutting device 44 is used to form the rounded corners 921 and cut and separate the packaging pieces 92 .

In summary, the horizontal packaging machine of the present invention can be equipped with the scissor device 43 or the rear cutting device 44 according to production needs, and then the control module 12 can be operated (for example, by pressing the switch on the panel) to select the front cutting device 41, the second cutting device 42, or the rear cutting device 44, so that the rounded corners 921 or the easy-tear openings 922 can be formed on each packaging piece 92, or a special packaging shape can be formed. Therefore, the present invention only needs to replace one device at most, which can reduce the time for machine modification and improve production efficiency, so it can indeed achieve the purpose of the present invention.

However, the above is only an embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the present patent.

11: Cam drive unit

111: Cam drive

112: Rotating shaft

113: Cam

114: Encoder

12: Control module

2: Edge banding

21: Bottom sealing device

22: Hot side sealing device

23: Cold side sealing device

3: Bag carrying device

31: Roller shaft

32: Bag drive

4: Film cutting group

41: Front cutting device

411: First mold

412: First telescopic cylinder

413: First Tool

414: Chip removal pipe

415: Channel

416: Punching

417: Cylinder body

418: Piston rod

42: Second cutting device

43: Scissors device

44: Rear cutting device

441: The third mold

442: The third telescopic cylinder

443: The third tool

444: Channel

445: Punching

446:Module

447:Special-shaped punch

448: Orifice Plate

5: Bag opening device

51: Upper bag opening unit

52: Pushing unit

53: Lower bag opening unit

61: Filling device

62: Bag opening device

7: Sealing group

71: first sealing device

72: Second sealing device

8: Bag receiving device

81: Carrier

82: Bag receiving drive

83: Slide seat

84: Pull rod

90: Dressing Space

91: Membrane

92:Packaging

921: Rounded Corners

922: Easy to tear

X: Transport direction

Z: height direction

Other features and effects of the present invention will be clearly presented in the implementation method with reference to the drawings, in which: Figure 1 is a top view schematic diagram of the first embodiment of the horizontal packaging machine of the present invention used to form a film material into multiple packaging pieces of filling materials; Figure 2 is an incomplete three-dimensional schematic diagram, showing a sealing edge group, a bag pulling device and all film groups of the first embodiment; Figure 3 is an incomplete three-dimensional schematic diagram, showing a bag opening device, a bag unfolding device, a sealing group and a bag receiving device of the first embodiment; Figure 4 is a three-dimensional schematic diagram of the bag pulling device and the film cutting group; Figure 5 is a three-dimensional schematic diagram of a front cutting device of the film cutting group; Figure 6 is a partial cross-sectional schematic diagram of Figure 5; Figure 7 is a front view of the bag opening device and the bag unfolding device; Figure 8 is an incomplete three-dimensional schematic diagram of the bag receiving device; FIG. 9 is an incomplete three-dimensional schematic diagram of the second embodiment of the present invention, illustrating a rear cutting device and the bag-drawing device of the second embodiment; FIG. 10 is a three-dimensional diagram of the rear cutting device viewed from another angle; FIG. 11 is a three-dimensional exploded diagram of FIG. 10; and FIG. 12 is an incomplete three-dimensional schematic diagram of the third embodiment of the present invention.

3: Bag carrying device

31: Roller shaft

32: Bag drive

4: Film cutting group

41: Front cutting device

411: The first mold

412: First telescopic cylinder

42: Second cutting device

43:Scissor device

90: Dressing space

91: Membrane material

92: Packaging

921: Rounded corners

922: Easy to tear

X: transport direction

Z: height direction

Claims (9)

A horizontal packaging machine is used to convey a continuous film material along a conveying direction and form a plurality of packages filled with materials. The horizontal packaging machine comprises: a cam drive assembly, including a cam drive, a rotating shaft driven by the cam drive, and a plurality of cams spaced apart on the rotating shaft, wherein the cam drive has an encoder for outputting information about the rotation of the rotating shaft; a control module connected to the encoder signal; a sealing assembly driven by the cam drive assembly and used to press the side edge of the film material and form a plurality of spaced containing spaces on the film material; and a bagging device. The edge sealing group is arranged behind the edge sealing group along the conveying direction, and includes two roller shafts extending along a height direction perpendicular to the conveying direction, and a bag pulling driver connected to the control module signal and connected to one of the roller shafts, and the roller shafts are used to clamp the film material and move intermittently along the conveying direction; a film cutting group is arranged behind the edge sealing group along the conveying direction, and the film cutting group is used to cut the film material to form the packaging pieces, and each of the packaging pieces is formed with the containing space, multiple rounded corners, and at least one easy-tear opening, and the film cutting group includes a front cutting device and also includes a scissors device and a rear cutting device, the front cutting device and the rear cutting device both having at least one telescopic cylinder connected to the control module signal, and at least one cutter driven by the telescopic cylinder to cut the film material; a bag opening device, arranged behind the film cutting group along the conveying direction, the bag opening device is driven by the cam driving group and is used to open the containing space of each of the packages; a filling device, arranged behind the bag opening device along the conveying direction, the filling device is used to fill the material into the containing space of each of the packages; a sealing group, arranged behind the filling device along the conveying direction Afterwards, the sealing assembly is driven by the cam drive assembly and is used to press the top of each package and seal its containing space; and a bag receiving device is used to drive the packages to be transported along the conveying direction. The bag receiving device includes two slides that move back and forth along the conveying direction and clamp the packages, a carrier, an electric-driven bag receiving driver that drives the carrier to move back and forth along the conveying direction, and two spaced-apart pull rods pivotally connected to the carrier. The bag receiving driver is connected to the control module signal, and the two opposite ends of each pull rod are pivotally connected to the carrier and one of the slides. The horizontal packaging machine as described in claim 1, wherein the film cutting group further includes a second cutting device, the second cutting device having at least one telescopic cylinder connected to the control module signal, and at least one knife driven by the telescopic cylinder to cut the film material. A horizontal packaging machine as described in claim 2, wherein the front cutting device and the second cutting device are located between the edge sealing group and the bag pulling device, the front cutting device is used to form the equal rounded corners on each of the packages, the second cutting device is used to form the easy-tear opening on each of the packages, the rear cutting device is arranged behind the bag pulling device along the conveying direction, and when the film cutting group includes the scissors device, the scissors device is arranged along the conveying direction It is arranged behind the bag-carrying device and cooperates with the front cutting device and the second cutting device. When the film cutting group includes the rear cutting device, the cutter of the rear cutting device is used to cut the film material and separate the packaging pieces and simultaneously form the rounded corners and the easy-tear opening on each of the packaging pieces. The control module can select to start the front cutting device, the second cutting device and the scissors device, or select to start the rear cutting device. As described in claim 3, the cutter of the rear cutting device has a special-shaped punch driven by the telescopic cylinder, and a perforated plate for the special-shaped punch to extend into and press against the film material, the special-shaped punch is used to cut the film material and separate the packaging pieces, and at the same time form the rounded corners and the easy-tear opening on each of the packaging pieces. As described in claim 3, the front cutting device further comprises two molds spaced up and down for the film to pass through, two telescopic cylinders respectively arranged on the molds, and two knives respectively arranged on the telescopic cylinders, each mold having a channel for the film to pass through, and a punching hole connected to the channel and for the corresponding knife to extend into. A horizontal packaging machine as described in claim 3, wherein the scissor device is driven by the cam drive assembly and is used to cut the film material to separate it into the packaging parts. A horizontal packaging machine as described in claim 1, wherein the bag opening device includes an upper bag opening unit for pulling open the upper half of each package, a pushing unit for pushing the two side edges of each package, and a lower bag opening unit for pulling open the lower half of each package. The horizontal packaging machine as described in claim 1 further includes a bag opening device between the filling device and the sealing unit, the bag opening device being used to flatten the top of each package. A horizontal packaging machine as described in claim 1, wherein the edge sealing group includes a bottom sealing device for heat-pressing the bottom end of the film material, and a hot side sealing device for heat-pressing the film material and forming the containing spaces, and the sealing group includes a first sealing device for heat-pressing the top end of each package and sealing its containing space, and a second sealing device installed behind the first sealing device and used to pressurize the top end of each package.

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