JP2021031142A - Vertical bag-making filling and packaging machine having front cover - Google Patents

Abstract

To provide a vertical bag-making filling and packaging machine having a front cover, which has a front cover of a foldable type for covering the front of a packaging machine body, and in which support to an electric box is ensured regardless of an open/close state of the front cover, and which can reduce swinging in a forward direction of the packaging machine body when opening/closing the front cover.SOLUTION: On a front wall 3b of an electric box 3, a turning shaft 17 and a pivot 26 are provided. A first cover part 15 of a front cover 14 can be turned around the turning shaft 17, and a second cover part 16 is turnably coupled from the pivot 26 via a turning arm 23. The first cover part 15 and the second cover part 16 are turnably joined to each other via a longitudinal support shaft 21. The first cover part 15 and the second cover part 16 are supported on the front wall 3b of the electric box 3 in a state of being collected together. Since the second cover part 16 moves by keeping an attitude that is substantially in parallel to an initial attitude for covering the front of the packaging machine body 2, the front of the packaging machine body 2 is opened/closed with little swinging.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vertical bag-making filling and wrapping machine such as a vertical pillow wrapping machine, which is provided with a front cover for covering the front surface of the wrapping machine main body.

Conventionally, as a wrapping machine, a strip-shaped wrapping material sent in a vertically arranged state is vertically sealed and molded into a tubular wrapping material, and a product to be packaged is put in and filled in the tubular wrapping material. , A vertical bag-making filling and packaging machine is often used to manufacture a bag packaging body by accommodating and packaging the product in a bag formed by applying a horizontal seal to the tubular packaging material.

FIG. 7 is a diagram showing an example of a conventional general vertical bag-making filling / packaging machine. In the vertical bag-making filling and packaging machine 50 shown in FIG. 7, a packaging material feeding device 53 provided with packaging material feeding belts 53a and 53b is arranged on the side of the filling cylinder 52 arranged in the vertical direction. The strip-shaped packaging material Fw wound around the filling cylinder 52 is fed downstream along the filling cylinder 52 by the packaging material feeding device 53. The strip-shaped packaging material Fw to be pulled down is curved and molded by winding the strip-shaped packaging material Fw from the rear of the filling cylinder 52 by a cylinder making device (sailor) 51, and both ends of the strip-shaped packaging material Fw in the width direction on the front side of the filling cylinder 52. Is bonded by a vertical sealing device 54 composed of vertical seal rubbers 54a and 54b and a vertical sealing (center seal) Sc is applied to form a tubular packaging material Ft. The tubular packaging material Ft is provided with a horizontal seal (end seal) Se in the crossing direction by a horizontal seal device 55 composed of horizontal sealer blocks 55a and 55b that operate in the front-rear direction of the vertical bag-making filling and packaging machine 50. Is formed. The product to be packaged is put into a hopper (not shown) from above the filling cylinder 52, and the bag packaging body Bp is continuously formed by repeating filling of the product in the tubular packaging material Ft and formation of a bag. Is manufactured. The individual bag packaging body Bp obtained by cutting in the middle of the horizontal seal Se is guided by the guide chute 56 and handed over to the bag packaging body unloading device 57 such as an up-and-tilt belt conveyor, and further, an inspection device and an inspection device and the like. It is transported to the downstream part where the boxing device is arranged (see Patent Document 1).

6A and 6B are views showing an example of a conventional vertical bag-making filling and packaging machine, FIG. 6A is a front view of the vertical bag-making filling and packaging machine, and FIG. 6B is a side view and a view thereof. 6 (c) is a plan view thereof. The vertical bag-making filling / packaging machine 1a shown in FIG. 6 is a packaging machine main body 2 capable of continuously manufacturing a bag packaging body by forming a bag from a strip-shaped packaging material and filling / sealing the product in the bag. And an electric box 3 as a box-shaped facility for accommodating electrical components such as a control device for an operating portion of the packaging machine main body 2. The electric box 3 is installed so as to be laterally arranged substantially without a gap with respect to one side of the packaging machine main body 2. Further, in recent years, the automation and sophistication of the packaging operation have been advanced, so that the operation of each part of the packaging machine main body 2 can be confirmed on the screen, and the operation of each part of the packaging machine main body 2 can be easily set. It is a standard specification to provide a thin monitor 58 for operation and display so that the device can be operated and displayed.

The thin monitor 58 is provided by utilizing the top wall 3a of the electric box 3. In the vertical bag-making filling and packaging machine 1a, the thin monitor 58 has a flat top wall 3a of the electric box 3 because it is advantageous to route the wiring from the power supply and the controller housed in the electric box 3. It is mounted on the upper surface of the product via a mounting tool 59 or the like. As for the thin monitor 58, in addition to the fact that a type having a liquid crystal screen has been provided at a low price, a large thin monitor has recently been used so that a large amount of information can be displayed on the screen. Often adopted. Since the width W1 of the thin monitor 58 is the same as the width Wb of the electric box 3, the thin monitor 58 does not project to the side of the electric box 3.

In a bag-making filling and packaging machine such as the vertical bag-making filling and packaging machine 1a, a part that the operator mistakenly operates so that foreign matter does not enter the packaging machine, especially the sealing device, the tubular packaging material, or the bag. The wrapping machine main body 2 is covered with a front cover 60 in consideration of hygiene and safety so as not to touch. The front cover 60 is usually made of a transparent panel so that the main body of the wrapping machine can be seen from the outside.

As the front cover 60 of the conventional wrapping machine main body 2, a double-door cover that is divided into two at the center of the front of the wrapping machine main body 2 is usually used. The double-door front cover 60 is divided into a left cover portion 61 and a right cover portion 62 having the same size, and the outer edge portions of both cover portions 61 and 62 are the frame portion of the wrapping machine main body 2 or the wrapping machine. By rotatably attaching to the side cover of the main body 2 using a vertical axis or metal fittings, it can be opened and closed in a double-door manner. The lower portion of the front cover 60 in a state where both the cover portions 61 and 62 are closed is a notch portion 63 for passing the bag packaging body unloading device 57.

A mode in which, for example, at a height position directly above the notch 63, a stay 64 that comes into contact with the wrapping machine main body 2 when the front cover 60 is closed and serves as a stopper for preventing over-closing is laterally passed to the wrapping machine main body 2. It is provided in. When the front cover 60 is closed, the left and right cover portions 61 and 62 come into contact with the stay 64, respectively, so that further movement in the closing direction is restricted and the closed position can be maintained. When the operator performs maintenance work such as inspection, repair, and replacement of each operating part of the wrapping machine main body 2, the front cover 60 is opened to access the inside from the front side of the wrapping machine main body 2. The stay 64 as a stopper for preventing over-closing may interfere with the work by the operator, and may cause a decrease in work efficiency.

Since the notch 63 for passing the bag packaging body unloading device 57 of the front cover 60 is an opening connecting the packaging machine main body 2 and the outside, the opening is wide from the viewpoint of hygiene and safety. You have to make it as narrow as possible. However, the double door type front cover 60 is a cover in which the left and right cover portions 61 and 62 are opened and closed by turning around the outer edge portion, respectively. Therefore, when the front cover portions 60 and 62 are opened, both cover portions 61 and 62 are opened and closed. The forward swing of the wrapping machine main body 2 becomes large (see the open state shown by the imaginary lines in FIGS. 6 (b) and 6 (c)), and the lower tips of both the cover portions 61 and 62 are the bag wrapping body unloading device. May interfere with 57. In order to avoid such interference by the conventional measures on the extension line, the opening height of the notch portion 63 must be increased upward, but especially when the bag / package carrying-out device 57 is an ascending and inclined type. The opening height of the notch portion 63 tends to be high, and the achievement of the original installation purpose of the cover may be neglected.

Japanese Unexamined Patent Publication No. 2011-162239

Therefore, in a vertical bag-making filling and packaging machine that covers the front of the main body of the packaging machine and has a front cover consisting of a two-piece cover portion divided into left and right, the related configuration is devised while utilizing the existence of the electric box. Therefore, there is a problem to be solved in that the swinging behavior of the left and right covers in the front of the wrapping machine body is reduced so that the front cover can be opened and closed.

An object of the present invention is to solve the above problems. The front cover covering the front surface of the packaging machine body is configured in a foldable manner to ensure support to the electric box regardless of its open / closed state, and the front cover. It is an object of the present invention to provide a vertical bag-making filling and packaging machine provided with a front cover capable of reducing the forward swing of the packaging machine body when opening and closing.

In order to solve the above problems, the vertical bag-making filling and packaging machine provided with the front cover according to the present invention fills the bag with the product while forming the bag from the strip-shaped packaging material traveling in the vertical direction and accommodates the product. The main body of the packaging machine that seals the bags and manufactures the bag packaging.
An electric box attached to the main body of the packaging machine in a horizontal state and accommodating electrical components such as a control device for an operating part of the main body of the packaging machine, and an electric box arranged on the front side of the main body of the packaging machine and the main body of the packaging machine. It is a vertical bag-making filling and packaging machine equipped with a front cover that can be opened and closed.
The front cover is composed of a first cover portion on the side closer to the electric box and a second cover portion on the side farther from the electric box, and the first cover portion and the second cover portion are adjacent to each other. The parts are joined to each other so as to be swivelable via a vertical support shaft for swivel.
On the front wall of the electric box, a rotation shaft extending in the vertical direction and a rotation shaft extending in parallel with the rotation shaft at a position closer to the main body of the packaging machine than the rotation shaft are arranged. The first cover portion of the front cover is rotatable about the rotation shaft because the side end edge portion on the electric box side is linked to the rotation shaft.
The second cover portion of the front cover is rotatably connected to a swivel arm rotatably connected to the swivel shaft.

According to the vertical bag-making filling and packaging machine provided with this front cover, the vertical bag-making filling and packaging machine includes a packaging machine main body and an electric box, and the front cover has a first cover portion on the side close to the electric box and electricity. It is composed of a second cover portion on the side far from the box, and both cover portions are rotatably joined to each other via a vertical support shaft for turning at the side edge portions adjacent to each other. On the front wall of the electric box, a rotation shaft and a rotation shaft for opening and closing the front cover between the closed state of covering the front of the main body of the packaging machine and the open state of opening the front are arranged so as to extend in the vertical direction. ing. The side edge of the first cover on the electric box side is linked to the rotation shaft, and the second cover is on the front wall of the electric box in addition to the swivel joint with the first cover. Since it is connected to the arranged swivel shaft via a swivel arm, the second cover portion is reliably supported regardless of the open / closed state of the front cover. Regarding the front cover, both the first cover portion and the second cover portion are supported in a state of being integrated with respect to the front wall of the electric box, and are simply arranged so as to cover the front surface of the packaging machine main body. Since it is related, it is advantageous for installation / removal and maintenance work of the front cover.

When opening and closing the front cover, if the front cover is pushed toward the electric box side or pulled from the electric box side, the first cover portion rotates about the rotation axis, and the second cover portion is different from the first cover portion. Since it is rotatably joined via the vertical support shaft, it operates in conjunction with the rotation of the first cover portion. Since the second cover portion also operates in a regulated manner with respect to the swivel movement of the swivel arm connected to the swivel shaft, the second cover portion operates in the front-rear direction with respect to the packaging machine main body, and the packaging machine main body and electricity. Performs a combined operation with the horizontal operation in which the boxes are lined up. That is, the front wall, the first cover portion, the second cover portion, and the swivel arm of the electric box act like a four-sided link mechanism in which adjacent ones are rotatably connected to each other, so that the first cover The part rotates positively around the rotation axis, but the second cover part itself has little rotation operation, and is small while maintaining a posture substantially parallel to the initial posture of covering the front surface of the packaging machine body. Move around.

In a vertical bag-making filling and packaging machine provided with this front cover, a link arm including a first arm and a second arm extending corresponding to the first cover portion and the back surface side of the second cover portion is arranged. The first arm is attached to the first cover portion, and is rotatably connected to the rotating shaft at one end and rotatably connected to the vertical support shaft at the other end. Can be rotatably connected to the vertical support shaft at one end portion while being attached to the second cover portion.
By disposing such a link arm, the first cover portion to which the first arm is attached is rotatably linked to the rotation shaft via the first arm, and the first cover portion and the second cover portion are rotatably linked to each other. By being rotatably supported by the vertical support shaft via the first arm and the second arm, the side edge portions adjacent to each other are rotatably joined to each other via the vertical support shaft. With a simple structure called a link arm, a structure in which the first cover portion can rotate with respect to the rotation axis and a structure in which the first cover portion and the second cover portion can rotate with each other can be obtained. The number of link arms may be one or a plurality of links arranged vertically apart from each other, but it is preferable to use two link arms at the top and bottom from the viewpoint of the open / closed state, the stability of the opening / closing operation, and the simplicity of the structure. ..

In the vertical bag-making filling and packaging machine provided with the front cover, the front cover is arranged at a position offset toward the front side of the front surface of the packaging machine body in a closed state covering the front surface of the packaging machine body. In the closed state of the front cover, the link arm and the swivel arm can be arranged in the gap between the back surface of the front cover and the front surface of the packaging machine body caused by the offset.
In the closed state where the front cover covers the front of the wrapping machine body, the front cover is placed at an offset position so as to create a gap on the front side with respect to the front of the wrapping machine body, and the link arm is attached to the back side of the front cover. By arranging the swivel arm extending from the swivel shaft in the gap, the front cover in the closed state is placed as close as possible to the front of the main body of the packaging machine and the width of opening to the outside is reduced. can do.

In a vertical bag-making filling and packaging machine provided with this front cover, the rotating shaft is arranged near the center of the front wall of the electric box in the width direction, and the swivel shaft is placed on the front wall of the electric box. It can be arranged near the side edge end adjacent to the wrapping machine main body and at a position below the rotation shaft.
Such an arrangement of the rotating shaft and the rotating shaft on the front wall of the electric box enables the front wall of the electric box to be efficiently used to support the front cover, and the link arm connected to the rotating shaft. The swivel arms connected to the swivel shaft can be rotated without interfering with each other.

In the vertical bag-making filling and packaging machine provided with the front cover, the tip of the swivel arm can be rotatably connected to the second arm of the link arm.
By rotatably connecting the swivel arm to the second arm, the second cover portion is a plate-shaped cover, but a structure is obtained which is rotatably connected to the swivel arm via the second arm. Can be done.

In the vertical bag-making filling and packaging machine provided with the front cover, the first cover portion is in the closing direction of the first cover portion by contacting the frame body of the packaging machine main body in the front cover closed state. A stopper can be provided to prevent overshooting.
When the front cover is closed, the stopper provided on the first cover abuts on the frame of the packaging machine body and functions as a stopper, and the entire front cover including not only the first cover but also the second cover Prevents overshooting in the closing direction. The stopper is not provided on the main body side of the packaging machine, but has a structure on the front cover side. In the wrapping machine main body, the existing frame is only the object of contact with the stopper, and the structure of the wrapping machine main body does not need to be specially changed when the stopper is provided.

In the vertical bag-making filling and packaging machine provided with the front cover, the width of the first cover portion is made equal to the distance from the rotation shaft to the boundary between the packaging machine main body and the electric box, and the first cover portion is provided. The width of the second cover portion and the width of the second cover portion can be set to a ratio of about 1: 3.
By setting the width of the first cover and the width of the second cover in this way, when the front cover is folded and opened, the first cover that has rotated half a turn around the rotation axis is the rotation axis. The second cover portion, which extends in an inverted position from a position corresponding to the width of the first cover portion and is rotatably joined to the first cover portion via a vertical support shaft, is inverted. The width of the first cover in the vertical position, the distance between the first cover and the rotating shaft (equal to the width of the first cover), and the distance from the rotating shaft to the boundary between the packaging machine body and the electric box. It is spread by the total width (three times the width of the first cover) of the distance (equal to the width of the first cover). Therefore, the second cover portion can be just separated from the front surface of the wrapping machine main body to open the front surface of the wrapping machine main body most efficiently. In order for the second cover portion to open completely without covering even a part of the front surface of the packaging machine body in the opened state, the width of the second cover portion may be smaller than the ratio of the first cover portion. ..

In a vertical bag-making filling and packaging machine provided with this front cover, a notch is formed on the lower side of the second cover portion to a side edge portion on the side far from the first cover portion, and the packaging machine main body is described. The side cover on the side far from the first cover portion is provided with a bent portion that is arranged to enter the notch portion in the closed state of the front cover portion, and the cut portion is partially closed by the bent portion. The notch can be an opening at the center of the lower side of the front cover for passing the bag packaging body carrying-out device for carrying out the bag packaging body manufactured by the packaging machine main body to the outside of the front cover.
A part of the notch formed on the lower side of the second cover is closed by a bent portion extending from the side cover of the packaging machine main body from the opened side, and the opening remaining in the notch is used as a bag packaging unloading device. Since the opening is used for passing through, the size of the opening can be suppressed to the minimum required size, and both safety and hygiene can be satisfied with respect to packaging. Further, when the front cover is opened, the second cover portion moves laterally mainly dragged by the first cover portion by a combined operation with the rotation operation of the first cover portion. Therefore, the second cover portion can be opened without interfering with the bag packaging carrying-out device.

Since the vertical bag-making filling and packaging machine provided with the front cover according to the present invention is configured as described above, the side edge portion of the first cover portion on the electric box side is linked to the rotation shaft. The second cover portion is rotatably connected to the swivel shaft arranged on the front wall of the electric box via a swivel arm in addition to the swivel joint with the first cover portion. Regardless of the open / closed state of the front cover, the second cover portion can be reliably supported with respect to the electric box via the first cover portion and the swivel arm. As for the front cover, since both the first cover portion and the second cover portion are supported in a state of being integrated with respect to the front wall of the electric box, it is advantageous for installation / removal and maintenance work of the front cover.
When the front cover is to be opened and closed, the first cover portion rotates around a rotation shaft. Since the second cover portion is rotatably joined to the first cover portion via the vertical support shaft, the second cover portion operates in conjunction with the rotation of the first cover portion. Since the second cover portion further regulates the swivel operation of the swivel arm connected to the swivel shaft, the second cover portion has both the swivel operation of the first cover portion and the swivel operation of the swivel arm. Performs complex operations consistent with. That is, the front wall, the first cover portion, the second cover portion, and the swivel arm of the electric box act like a four-sided link mechanism in which adjacent ones are rotatably connected to each other, so that the second cover There is little rotational movement of itself, and it moves while maintaining a posture that is substantially parallel to the posture that covers the front of the original packaging machine body.
In this way, the front cover that covers the front of the wrapping machine body is configured in a foldable form to ensure support to the electric box regardless of the open / closed state, and when the front cover is opened / closed, the front cover is moved to the front of the wrapping machine body. The runout can be reduced.
Further, when a stopper is provided to prevent the front cover from going too far in the closing direction when the front cover is closed, it is not necessary to install a stay acting as a stopper on the main body of the wrapping machine, and the stay is on the front. It is possible to prevent it from interfering with the maintenance work of the packaging machine body when the cover is open. When arranging the bag packaging unloading device, when opening and closing the front cover, the swing around the front of the wrapping machine body is reduced, and the lower ends of the tips of the left and right covers interfere with the bag packaging unloading device. It disappears, and the opening for carrying out the bag package can be made as low as possible.

FIG. 1 is a diagram showing an embodiment of a vertical bag-making filling / packaging machine provided with a front cover according to the present invention in a state where the front cover is closed. FIG. 2 is an enlarged view of a part of an embodiment of a vertical bag-making filling / packaging machine provided with the front cover shown in FIG. 1, or is shown in a state where the front cover is opened. FIG. 3 is a partial perspective view showing a front cover open state of the vertical bag-making filling / packaging machine provided with the front cover shown in FIG. FIG. 4 is a partial perspective view showing a closed state of the front cover of the vertical bag-making filling / packaging machine provided with the front cover shown in FIG. FIG. 5 is a schematic view showing a transition of the folding operation of the front cover of the vertical bag-making filling and packaging machine provided with the front cover according to the present invention. FIG. 6 is a diagram showing an example of a vertical bag-making filling / packaging machine provided with a conventional front cover. FIG. 7 is a perspective view showing an example of a conventional vertical bag-making filling / packaging machine.

Hereinafter, examples of a vertical bag-making filling / packaging machine provided with a front cover according to the present invention will be described with reference to the attached drawings. 1A and 1B are views showing an embodiment of a vertical bag-making filling and packaging machine provided with a front cover according to the present invention, in which FIG. 1A is a front view thereof, FIG. 1B is a side view thereof, and FIG. 1C is a plan view thereof. It is a figure which shows the state which the front cover is closed. In FIG. 2, FIG. 2A is an enlarged plan view showing a part of an embodiment of a vertical bag-making filling / packaging machine provided with the front cover shown in FIG. 1, and FIG. 2B is a plan view showing the front cover opened. It is a top view which shows in a state. 3 and 4 are enlarged perspective views showing the front cover of the vertical bag-making filling / packaging machine provided with the front cover shown in FIG. 1 in the closed state and the open state, respectively. 1 and 2 show an outline of the vertical bag-making filling and packaging machine, and FIGS. 3 and 4 show details of the arrangement of the packaging machine body, the electric box, the front cover, and the thin monitor. ing.

In the embodiment shown in FIGS. 1 to 4, the vertical bag-making filling and packaging machine 1 provided with the front cover fills the bag with the product while forming the bag from the strip-shaped packaging material traveling in the vertical direction. The wrapping machine main body 2 that seals the stored bags to manufacture the bag wrapping body and one side of the wrapping machine main body 2, in the example shown, is arranged adjacent to the left side in the horizontal state, and the operating part of the wrapping machine main body is inside. It is composed of an electric box 3 for accommodating electrical components such as a control device of the above.

In the vertical bag-making filling and packaging machine 1, the front surface of the packaging machine main body 2 is covered with the front cover 14 so as to be openable and closable. The front cover 14 is a cover whose left and right cover portions open and close in a foldable manner. In this embodiment, the left cover portion near the electric box 3 is the first cover portion 15, and the right cover portion far from the electric box 3 is the second cover portion 16. The second cover portion 16 of the front cover 14 has a height equivalent to the height of the packaging machine main body 2, but the first cover portion 15 interferes with the thin monitor (hereinafter, simply referred to as “monitor”) 11. The height is lower than the height of the electric box 3 as well as the height of the packaging machine main body 2 in order to avoid the above. The front surface of the packaging machine main body 2 and the front surface of the electric box 3 are aligned so as to be flush with each other.

The front cover 14 is located on the front side by an offset distance S from the front of the packaging machine main body 2 in the closed state (FIGS. 1 (b) and 1 (c)). The rotating shaft 17 used to open and close the front cover 14 is a rotating shaft installed on the front wall 3b of the electric box 3 in a manner extending in the vertical direction near the center in the width direction. The rotating shaft 17 is rotatably held on the front wall 3b of the electric box 3 by the upper holder 17a and the lower holder 17b.

As shown in FIG. 3, the monitor 11 is attached to the upper end portion 17c of the rotating shaft 17 in a radial direction via a monitor arm 12 and a support 13 provided at the tip thereof. It is supported. Since the position where the support 13 is attached to the monitor 11 is the center position Cw in the width direction of the monitor 11, the monitor 11 itself is held in a well-balanced manner with respect to the monitor arm 12 in the width direction. The rotation center axis when the monitor 11 rotates is a vertical axis aligned with the rotation axis 17. Looking at the state in which the monitor 11 occupies the normal position corresponding to the closed state of the front cover 14, the vertical axis is located laterally offset from the center position Cw in the horizontal width direction to the anti-packaging machine main body side by a distance D, and the monitor. The position of 11 is also offset from the front of the packaging machine main body 2 to the front side like the front cover 14, and the packaging machine main body side portion (right side portion in the figure) of the monitor 11 occupying the normal position is from the front side. As you can see, it overlaps with a part of the packaging machine body 2. Since the support 13 can be provided with a tilt mechanism (which itself may be a known one) that swings in the vertical direction, the vertical elevation angle (subduction angle) of the monitor 11 is adjusted so that the operator can easily see it. be able to.

The rotating shaft 17, the first cover portion 15, and the second cover portion 16 are linked by a link mechanism 18. The link mechanism 18 includes an upper link arm 19 and a lower link arm 20 which are attached along the inner surface side of the first cover portion 15 and the second cover portion 16 and are configured to be bendable. .. Each of the link arms 19 and 20 has a first arm 19a and 20a whose base end is rotatably connected to a rotation shaft 17 and is attached to the back surface of the first cover portion 15, and a first arm 19a. , 20a is rotatably connected to the tip of the second cover portion 16 and includes second arms 19b and 20b attached to the back surface of the second cover portion 16. With a simple structure of link arms 19 and 20, a structure in which the first cover portion 15 can rotate with respect to the rotation shaft 17 and a structure in which the first cover portion 15 and the second cover portion 16 can rotate with each other can be obtained. Be done. The link arm may be one or a plurality of links arranged vertically apart, but as shown in the figure, two upper and lower links are provided from the viewpoint of stability of the open / close state and open / close operation and simplicity of the structure. Is preferable.

The first cover portion 15 can rotate around the rotation shaft 17 because the side edge portions on the electric box 3 side are linked to the rotation shaft 17 via the first arms 19a and 20a. is there. That is, the rotation shaft 17 is a shaft that directly supports the first cover portion 15 with respect to the electric box 3 as a rotation center thereof and rotatably supports the first cover portion 15. The arms 19a and 19b of the upper link arm 19 and the arms 20a and 20b of the lower link arm 20 are rotatably linked by a common vertical support shaft 21, and by this linking structure, the first The cover portion 15 and the second cover portion 16 are rotatably joined to each other via a vertical support shaft 21 at adjacent side edge portions. When the upper and lower link arms 19 and 20 are simultaneously bent around the vertical support shaft 21, the first cover portion 15 and the second cover portion 16 of the front cover 14 are folded or unfolded.

The second cover portion 16 on the side far from the electric box 3 is directly linked to the electric box 3 by another link arm 22. The link arm 22 includes a swivel arm 23 rotatably supported by a swivel shaft 26 on a bracket 24 mounted on the front wall 3b of the electric box 3, and the tip of the swivel arm 23 is interposed via a short shaft 25. It is rotatably connected to the arm 20b of the link arm 20. Since the arm 20b is attached to the back surface of the second cover portion 16, the swivel arm 23 has a structure in which the swivel arm 23 is rotatably connected to the second cover portion 16 via the short shaft 25 at its tip. The bracket 24 is located on the front wall 3b of the electric box 3 on the side of the wrapping machine main body 2 with respect to the rotating shaft 17, that is, near the side edge end adjacent to the wrapping machine main body 2 and below the rotating shaft 17. The swivel shaft 26 is arranged at the position, and the swivel shaft 26 is arranged in the bracket 24 so as to extend in parallel with the swivel shaft 17. By arranging the rotating shaft 17 and the rotating shaft 26 on the front wall 3b of the electric box 3 in this way, the front wall 3b of the electric box 3 is efficiently used for supporting the front cover 14, and the rotating shaft 3 is rotated. The link arms 19 and 20 connected to the moving shaft 17 and the swivel arm 23 connected to the swivel shaft 26 are arranged so as to be rotatable without interfering with each other.

The side edge portion of the first cover portion 15 on the electric box 3 side is linked to the rotation shaft 17, and the second cover portion 16 is a rotatable joint with the first cover portion 15 by the vertical support shaft 21. In addition, it is rotatably connected to the swivel shaft 26 arranged on the front wall 3b of the electric box 3 via the swivel arm 23. Therefore, the second cover portion 16 can be reliably supported with respect to the electric box 3 regardless of the open / closed state of the front cover 14. The front cover 14 is supported so that the first cover portion 15 and the second cover portion 16 are both integrated with respect to the front wall 3b of the electric box 3 and cover the front surface of the wrapping machine main body 2. The relationship is just to be placed. Therefore, the installation / removal and maintenance work of the front cover 14 only needs to be performed on the electric box 3, and it is only necessary to pay attention to the relative position at the time of installation on the wrapping machine main body 2.

Since the front cover 14 is arranged at a position offset by a distance S toward the front side of the front surface of the wrapping machine main body 2 in the closed state covering the front surface of the wrapping machine main body 2, the front cover 14 is in the closed state of the front cover 14. Due to the offset, a gap G corresponding to a distance S is formed between the back surface of the front cover 14 and the front surface of the packaging machine main body 2 (FIGS. 1 (b) and 1 (c)). Since the link arms 19 and 20 connected to the rotating shaft 17 and attached to the back surface side of the front cover 14 and the swivel arm 23 connected to the swivel shaft 26 are arranged in the gap G, the front cover 14 is closed. When in the state, it can be arranged in a state as close as possible to the front surface of the packaging machine main body 2. Therefore, the opening width connected to the outside through between the front cover 14 and the wrapping machine main body 2 can be reduced.

When trying to open or close the front cover 14, for example, when the handle 16c or the like provided on the second cover portion 16 is grasped and pushed toward the electric box 3 side or pulled from the electric box 3 side, the operating force thereof is the second cover. The first cover portion 15 acts on the first cover portion 15 from the portion 16 via the vertical support shaft 21, the first cover portion 15 rotates around the rotation shaft 17, and the second cover portion 16 is the first cover portion 15. It operates in conjunction with the rotation operation of. The first cover portion 15 and the second cover portion 16 are rotatable with each other by a common vertical support shaft 21, but the second cover portion 16 is fanned by the first cover portion 15 by itself, and the vertical support shaft is supported. There is a possibility of swinging around 21.

The second cover portion 16 of the front cover 14 is rotatably connected to the tip of the swivel arm 23 which is rotatably connected to the swivel shaft 26 provided in the electric box 3, so that the second cover portion 16 is connected to the second cover portion 16. The movement is also regulated by the link arm 22 that makes a turning motion. The second cover portion 16 performs a combined operation of an operation in the front-rear direction with respect to the packaging machine main body 2 and an operation in the lateral direction in which the packaging machine main body 2 and the electric box 3 are arranged side by side. That is, the front wall 3b, the first cover portion 15, the second cover portion 16, and the swivel arm 23 of the electric box 3 act like a four-sided link mechanism in which adjacent to each other is rotatably connected to each other. .. Therefore, when the front cover 14 is folded or unfolded, the first cover portion 15 rotates about the rotation shaft 17, but the second cover 16 itself does not rotate much. It moves while maintaining a posture substantially parallel to the posture of covering the front surface of the initial wrapping machine main body 2, and smoothly operates without being fanned by the first cover portion 15.

FIG. 3 is a perspective view showing a closed state of the front cover 14 of the vertical bag-making filling / packaging machine 1 provided with the front cover shown in FIG. Since the link arms 19 and 20 are in a straight state in the gap G (FIGS. 1B and 1C) without bending, the first cover portion 15 and the second cover portion 16 of the front cover 14 are folded. It covers the front surface of the wrapping machine main body 2 without being damaged.

When the front cover 14 is in the closed state, the rotation shaft 17 is rotated at an angle of approximately half a turn, so that the first cover portion 15 is rotated to the outside of the electric box 3 and is inverted. By bending the link arms 19 and 20 attached along the inner surface side of the first and second cover portions 15 and 16 to each other, the second cover portion 16 becomes the first cover portion 15 in the inverted state. On the other hand, it is folded. The right end 16a of the second cover portion 16 is aligned with the right end 2a of the wrapping machine main body 2 (or the right side cover 2c of the wrapping machine main body 2) when the front cover 14 is closed. When the second cover portions 15 and 16 are folded and the front cover 14 is opened, the wrapping machine main body 2 occupies a position corresponding to the left end 2b (or the right end edge of the electric box 3) of the wrapping machine main body 2. The front of is opened. The left end 16b of the second cover portion 16 reaches a lateral position beyond the electric box 3.

FIG. 4 is a perspective view showing a place where the front cover 14 of the vertical bag-making filling / packaging machine 1 provided with the front cover shown in FIG. 1 is in an open state. The link arms 19 and 20 are bent at the common vertical support shaft 21, and the first and second cover portions 15 and 16 of the front cover 14 are folded accordingly to form the front surface of the wrapping machine main body 2. Is open. Since the link arm 22 regulates the movement of the second cover portion 16 by the link arms 19 and 20, the second cover portion 16 operates smoothly without being fanned. Since the front cover 14 is in a compact folded state at a position closer to the electric box 3 side in the opened state, it does not spread widely around the front of the main body of the packaging machine and does not interfere with the operator's work.

As shown in FIG. 2A, the first cover portion 15 comes into contact with the peripheral frame body of the packaging machine main body 2 in a state where the front cover 14 is closed, so that the first cover portion 15 is excessively closed in the closing direction. A stopper 27 is provided to prevent the above. The stopper 27 provided on the first cover portion 15 functions as a means for preventing the first cover portion 15 from overshooting by contacting the frame portion of the packaging machine main body 2 in the closed state of the front cover 14. By preventing the first cover portion 15 from overshooting, the overshoot of the entire front cover 14 including the second cover portion 16 in the closing direction is prevented. The stopper 27 is not a structure provided on the packaging machine main body 2 side, but a structure on the front cover 14 side. Regarding the wrapping machine main body 2, the existing frame is only the object of contact with the stopper 27, and the structure of the wrapping machine main body 2 does not need to be changed with respect to the stopper 27. When the front cover 14 is folded (open state), the stopper 27 is the lower side portion of the first cover portion 15 so that the stopper 27 provided on the first cover portion 15 does not interfere with the second cover portion 16. The second cover portion 16 is provided at a position corresponding to the notch portion 28 (details will be described later) of the second cover portion 16 in the folded state. The stopper 27 provided on the back surface of the first cover portion 15 cuts the second cover portion 16 without interfering with the second cover portion 16 during the reversing operation of the first cover portion 15 when the front cover 14 is folded. It goes out to the front side through the notch 28.

Regarding the relationship between the width of the first cover portion 15 and the width of the second cover portion 16, as shown in FIG. 3, the width Wc1 of the first cover portion 15 is moved from the rotating shaft 17 to the packaging machine main body 2 and the electric box 3. It is preferable that the width Wc1 of the first cover portion 15 and the width Wc2 of the second cover portion 16 are equal to the distance La to the boundary between the first cover portion 15 and the second cover portion 16 at a ratio of about 1: 3. By setting the width Wc1 of the first cover portion 15 and the width Wc2 of the second cover portion 16 in this way, when the front cover 14 is folded and opened, the first one is rotated half a turn around the rotation shaft 17. The cover portion 15 extends from a position separated from the rotation shaft 17 by a distance La (corresponding to the lateral width Wc1 of the first cover portion 15, that is, La = Wc1) in an inverted posture with respect to the first cover portion 15. The second cover portion 16 which is rotatably joined via the vertical support shaft 21 overlaps the inverted first cover portion 15 and further extends beyond the first cover portion 15.

When the front cover 14 is in the open state, the width Wc2 of the second cover portion 16 extending laterally from the vertical support shaft 21 (the distance from the vertical support shaft 21 to the right end 16a, and the width Wc1 of the first cover portion 15). As shown in FIG. 4, the width Wc1 of the first cover portion 15 in the inverted posture, the distance La between the first cover portion 15 and the rotation shaft 17, and the rotation shaft 17 are defined as Since it is also the total width (Wc1 + 2 × La = 3 × Wc1) of the distance La from the to the boundary between the packaging machine main body 2 and the electric box 3, the second cover portion 16 is in front of the front wall 3b of the electric box 3. Moving to the outside, the position of the right end 16a extends to the boundary position between the packaging machine main body 2 and the electric box 3. That is, the second cover portion 16 is completely and just separated from the front surface of the wrapping machine main body 2 to open the front surface of the wrapping machine main body 2 most efficiently. In order for the second cover portion 16 not to cover even a part of the front surface of the packaging machine main body 2 in the opened state, the width Wc2 of the second cover portion 16 may be smaller than this ratio (in this case, of course, The width of the wrapping machine main body 2 becomes narrower in accordance with the width Wc2 of the second cover portion 16).

As shown in FIG. 3, a notch 28 cut out from the first cover portion 15 to the side edge portion on the far side is formed on the lower side of the second cover portion 16, and the first of the side cover 2c of the packaging machine main body 2 is formed. A bent portion 29 that extends from the side frame portion on the side far from the cover portion 15 and enters the notch portion 28 is provided, and a part of the notch portion 28 is closed by the bent portion 29 to provide an opening portion left. At the center of the lower side of the front cover 14, there is an opening 63 for passing the bag packaging body unloading device 57 that carries out the package manufactured by the wrapping machine main body 2 to the outside of the front cover 14. With such a structure, the size of the opening 63 can be suppressed to the minimum required size, and the requirements required from the viewpoints of both safety and hygiene regarding packaging can be satisfied. Further, when the front cover 14 is opened, the second cover portion 16 moves laterally mainly dragged by the first cover portion by a combined operation with the rotation operation of the first cover portion 15. Therefore, the second cover portion 16 can be opened without interfering with the bag packaging unloading device 57.

Explaining the monitor 11, the rotating shaft 17 as the vertical axis on which the monitor 11 in the normal position rotates is at a position offset from the center position Cw in the lateral width direction by a distance D toward the main body of the anti-packaging machine. As shown in FIG. 3 showing the closed state of the front cover 14, the horizontal dimension L1 of the portion occupying the outside from the rotation axis 17 (the vertical axis line thereof) of the monitor 11 is the main body of the packaging machine from the rotation axis 17 (the vertical axis line). The distance to 2 is set shorter than L2. When the rotation shaft 17 is rotated at an angle of approximately half a rotation to open the front cover, the monitor 11 is also interlocked and rotated around the rotation shaft 17 in accordance with the opening of the front cover 14. In the initial stage of this rotation, the right side portion that overlaps with the wrapping machine main body 2 on the front side and has a large swing radius far from the rotation shaft 17 is on the front side of the wrapping machine main body 2 in a direction further away from the front side. Rotate. After that, while the monitor 11 further rotates in response to the opening of the front cover 14, the portion of the monitor 11 does not interfere with the packaging machine main body 2. The portion on the side having a small swing radius (horizontal dimension L1) rotates on the top wall 3a of the electric box 3 and rotationally moves to the packaging machine main body 2 side as the rotation shaft 17 rotates. Since the distance L2 between the rotating shaft 17 and the packaging machine main body 2 is set as described above, the portion does not interfere with the packaging machine main body 2 even if it rotates half a turn. As a result, the monitor 11 rotates substantially half a turn without interfering with the packaging machine main body 2 and the electric box 3 until the front cover 14 is opened.

When the front cover 14 shown in FIG. 4 is open, the monitor 11 is rotated half a turn around the rotation shaft 17 so that the back surface side thereof faces the front. Since the monitor 11 has a relationship between the horizontal dimension L1 and the distance L2 (L1 <L2), when the right end on the back surface side of the monitor 11 (the left end on the front side, that is, the front cover 14 is in the closed state). The one end in the width direction, which was located on the side far from the wrapping machine main body 2, turns without colliding with the left side end 2b of the wrapping machine main body 2 and occupies a position corresponding to the left side end 2b. Further, the left end on the back surface side of the monitor 11 (the right end on the front side, that is, one end in the width direction on the side that overlaps a part of the packaging machine main body 2 when the front cover 14 is in the closed state) is the electric box 3. Although it overhangs to the left outside, it remains in a position where it fits within the width of the inverted left cover portion 15. When viewed from the front side, the monitor 11 is covered with the bent right cover portion 16.

As described above, regardless of the opening and closing of the front cover 14, the monitor 11 does not project inside the wrapping machine main body 2 and does not interfere with the wrapping machine main body 2 even during rotation. The operator is not obstructed by the monitor 11, and in the case of the inside of the packaging machine main body 2, for example, the vertical bag-making filling and packaging machine 50 shown in FIG. 7, the cylinder making device (sailor) 51, the filling cylinder 52, and the packaging material feeding device. Access to 53, the vertical sealing device 54, the horizontal sealing device 55, and the like is facilitated. Further, when the front cover 14 is opened, the monitor 11 is housed within the width range of the second cover portion 16 among the folded front covers 14, so that the operator passing around the packaging machine can see the monitor 11. If it does not collide with the first and second cover portions 15 and 16, it will not collide with the monitor 11, and damage or failure of the monitor 11 can be prevented. Since the screen side of the monitor 11 that has been rotated substantially half a turn is not hidden, it is possible to see or operate the display on the screen.

FIG. 5 is a diagram schematically showing a process in which the first and second cover portions 15 and 16 in the open state shift to the closed state when the front cover 14 is a foldable cover. For the sake of simplification of the figure, the structure is shown only in outline. Since the link arm 22 (FIGS. 2 and 3) is provided, when the first cover portion 15 turns, the first cover portion 15 is rotatable around a common vertical support shaft 21 with respect to the first cover portion 15. 2 The cover portion 16 is not fanned by itself. The second cover portion 16 is folded by the link arm 22 so as to gradually overlap the inverted first cover portion 15 while performing a suppressed movement that does not swing significantly. FIG. 4 schematically shows an example of a curve-like locus that the right end 16a of the second cover portion 16 follows. It is also possible to make the locus of the right end 16a a flatter curve by appropriately selecting the length and arrangement parameters of the first and second cover portions 15 and 16 and the link arm 22.

The thin monitor 11 may be independently rotated around the vertical axis by releasing the interlocking with the rotating shaft 17. In each of the above embodiments, the electric box 3 and the thin monitor 11 are arranged on the left side of the wrapping machine main body 2, but both may be arranged on the right side of the wrapping machine main body 2. Further, the rotation angle of the front cover 14 is not exactly half a turn, but may be substantially half a turn, and when the front cover 14 is closed, the outer end of the monitor 11 is the outer wall of the electric box 3. It is preferable that it is aligned with or inside the monitor, but if it does not interfere with the movement of the operator, and if it does not substantially extend outside the outer wall of the electric box 3, the outer edge of the monitor is flexibly arranged. I do not care.
It should be noted that the matter described in the specification as "rotatably connected" is that even if the structure is fixedly provided with respect to the rotating shaft (which is rotatably supported around). Further, it is clear that the structure may be rotatably provided with respect to the fixed shaft.

1,1a Vertical bag-making filling and packaging machine with front cover 2 Packaging machine body 2a Right end 2b Left end 2c Side cover 3 Electric box 3a Top wall 3b Front wall 11 Thin monitor 12 Monitor arm 13 Support 14 Front cover 15, 16 Left and right cover 16a Right end 16b Left end 16c Handle 17 Rotating shaft 17a, 17b Holder 17c Upper end 18 Link mechanism 19, 20 Link arm 19a, 19b Arm 20a, 20b Arm 21 Common vertical support shaft 22 Link arm 23 Swivel arm 24 Bracket 25 Short shaft 26 Swivel shaft 27 Stopper 28 Notch 29 Bending part 50 Vertical bag-making filling and packaging machine 51 Cylinder (sailor)
52 Filling cylinder 53 Packaging material feeding device 53a, 53b Packaging material feeding belt 54 Vertical sealing device 54a, 54b Vertical sealer 55 Horizontal sealing device 55a, 55b Horizontal sealer block 56 Guide chute 57 Bag packaging unloading device 58 Thin monitor 59 Fixture 60 Front cover 61, 62 Left and right cover parts 63 Notch part 64 Stay Wc1 Width of the first cover part 15 Wc2 Width of the second cover part 16 S Offset distance G Gap L1 Horizontal dimension of a part of the monitor L2 Packaging machine from the rotating shaft Distance to the main body La Distance from the rotating shaft 17 to the boundary between the packaging machine main body 2 and the electric box 3 W1 Width of the thin monitor Wb Width of the electric box Cw Width direction center line of the monitor D Between the rotating shaft 17 and the center line Cw Distance Fw Band-shaped packaging material Ft Cylindrical packaging material Sc Vertical seal Se Horizontal seal Bp Bag packaging

Claims (8)

A packaging machine body that manufactures a bag packaging body by filling a product in the bag while forming a bag from a strip-shaped packaging material traveling in the vertical direction and sealing the bag containing the product.
An electric box attached to the main body of the packaging machine in a horizontal state and accommodating electrical components such as a control device for an operating part of the main body of the packaging machine, and an electric box arranged on the front side of the main body of the packaging machine and the main body of the packaging machine. It is a vertical bag-making filling and packaging machine equipped with a front cover that can be opened and closed.
The front cover is composed of a first cover portion on the side closer to the electric box and a second cover portion on the side farther from the electric box, and the first cover portion and the second cover portion are adjacent to each other. The parts are joined to each other so as to be swivelable via a vertical support shaft for swivel.
On the front wall of the electric box, a rotation shaft extending in the vertical direction and a rotation shaft extending in parallel with the rotation shaft at a position closer to the main body of the packaging machine than the rotation shaft are arranged. The first cover portion of the front cover is rotatable about the rotation shaft because the side end edge portion on the electric box side is linked to the rotation shaft.
The second cover portion of the front cover is a vertical bag-making filling and packaging machine including a front cover that is rotatably connected to a swivel arm that is rotatably connected to the swivel shaft. A link arm including a first arm and a second arm extending corresponding to the first cover portion and the back surface side of the second cover portion is arranged.
The first arm is attached to the first cover portion, and is rotatably connected to the rotation shaft at one end and rotatably connected to the vertical support shaft at the other end. ,
The vertical type having the front cover according to claim 1, wherein the second arm is attached to the second cover portion and is rotatably connected to the vertical support shaft at one end portion. Bag filling and packaging machine. The front cover is arranged at a position offset toward the front side of the front surface of the packaging machine body in a closed state covering the front surface of the packaging machine body.
In the closed state of the front cover, the link arm and the swivel arm are arranged in a gap between the back surface of the front cover and the front surface of the packaging machine body caused by the offset. A vertical bag-making filling and packaging machine provided with the front cover according to claim 2. The rotating shaft is arranged near the center of the front wall of the electric box in the width direction.
The third aspect of the present invention, wherein the swivel shaft is arranged on the front wall of the electric box near the side edge end adjacent to the main body of the packaging machine and at a position lower than the swivel shaft. Vertical bag filling and packaging machine with front cover. The vertical bag-making filling and packaging machine provided with the front cover according to claim 3 or 4, wherein the tip of the swivel arm is rotatably connected to the second arm of the link arm. A claim comprising the first cover portion provided with a stopper that prevents the first cover portion from being excessively closed in the closing direction by abutting against the frame body of the packaging machine main body in the front cover closed state. A vertical bag-making filling / packaging machine provided with the front cover according to any one of Items 2 to 5. The width of the first cover portion is equivalent to the distance from the rotation shaft to the boundary between the packaging machine main body and the electric box, and the width of the first cover portion and the width of the second cover portion are about 1. A vertical bag-making filling / packaging machine comprising the front cover according to any one of claims 1 to 6, which comprises a ratio of 3 to 3. A notch portion cut open from the first cover portion to the side edge portion on the side far from the first cover portion is formed on the lower side of the second cover portion.
The side cover on the side of the packaging machine main body far from the first cover portion is provided with a bent portion that is arranged to enter the notch portion in the closed state of the front cover.
The notch portion partially closed by the bent portion carries out the bag package manufactured by the packaging machine main body to the outside of the front cover at the center of the lower side of the front cover. A vertical bag-making filling / packaging machine comprising the front cover according to any one of claims 1 to 7, which comprises an opening for passing the device.

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