JP6286156B2 - Top seal device - Google Patents

Description

  The present invention relates to a top seal device constituting a pillow packaging machine.

  In a line for pillow-wrapping articles such as foods and daily necessities, articles are supplied one after another to a pillow packaging machine, and individually pillow-wrapped by a packaging material such as a film to produce a pillow package.

  Along with the sequential supply of articles to the pillow packaging machine, the packaging material is unwound from the raw film and continuously supplied to form a bag. Articles are sequentially provided to the packaging material in the process of making the packaging material into a cylindrical shape. Next, in the center seal device, both end edges (center seal portion) in the left-right direction (direction orthogonal to the transport direction) in the packaging material stacked on each other are pressurized after being heated by a pair of bar sealers, Center seal (vertical seal). Then, in the top seal device, the top seal (lateral seal) and the cut of the packaging material are performed in the left-right direction at every pitch corresponding to the length of the article, and the pillow package is manufactured.

There are various types of top seal devices depending on the top seal width (width in the transport direction of the top seal) and the seal form (forms such as heat seal and fusing seal). For example, the top seal device described in Patent Document 1 includes a main sealer and a secondary sealer that can be moved forward and backward, and allows the top seal width to be changed. And the top seal device of patent documents 2 is provided with a plurality of sealers so that rotation is possible, and change of a top seal width and a seal form is enabled by changing a sealer. According to these top seal devices, the pillow package bodies ZA1 and ZA2 having different top seal widths w ₁ and w ₂ can be manufactured (see FIGS. 15A and 15B). In the case of a wide top seal with a top seal width w ₂ , a hole punched hole may be formed as shown in FIG. This hole makes it possible to suspend and display the pillow package ZA2.

Japanese Patent No. 4282318 (refer to FIG. 3A and FIG. 3B) JP-A-6-278722 (see FIG. 2)

  However, the top seal device described in Patent Document 1 cannot be used for different types of seal forms. In the top seal device described in Patent Document 2, when changing the top seal width and the seal form, it is necessary to change the upper and lower sealers. However, if one of the sealers is forgotten, there is a risk of a seal failure. There is a problem that there is.

  The present invention has been made in view of the above problems, and an object thereof is to provide a top seal device that can be used for different types of top seal widths and different types of seal forms.

(1) The present invention is a top seal that performs sealing and cutting by sandwiching a packaging material formed so as to wrap an article in the left-right direction perpendicular to the conveyance direction of the packaging material between the sealing surfaces of a pair of top sealers. Each of the top sealers includes a plurality of different seal surfaces arranged in the left-right direction, and the plurality of seal surfaces are switched by moving each top sealer in the left-right direction. The plurality of seal surfaces have different widths, and each top sealer has an end portion in the left-right direction having substantially the same width as the widest seal surface. This is a top seal device.

  According to the present invention, by moving the top sealer in the left-right direction and switching the seal surface, different types of top seal widths and different types of seal forms can be used together.

Moreover, according to the said invention, by moving a top sealer to the left-right direction and switching a sealing surface, it can be combined with a different kind of top seal width.

Moreover, according to the said invention, assembly | attachment adjustment is easy compared with the thing by a several sealer. And the sealing pressure of a wide seal | sticker and a narrow seal | sticker can be made uniform.

( 2 ) The present invention is also the top seal device according to (1) above, wherein the pair of top sealers are integrally moved in the left-right direction.

  According to the above invention, it is possible to prevent the occurrence of the problem of forgetting to change the sealing surface of the other top sealer only by changing the sealing surface of one top sealer.

( 3 ) The present invention is also characterized in that the pair of top sealers are attached to the movable member that moves in the left-right direction and move integrally in the left-right direction by moving the movable member. It is a top seal apparatus as described in said ( 2 ).

  According to the above invention, by moving the movable member in the left-right direction and switching the sealing surface, different types of top seal widths and different types of seal forms can be used together.

( 4 ) In the present invention, a pair of rails that support the pair of top sealers so as to be movable in the left-right direction, and the pair of rails are attached, and the movable unit moves in the left-right direction integrally with the pair of rails. A top seal device according to the above (1) or (2) .

  According to the above invention, when the movable member is moved in the left-right direction, each top sealer is an integral unit having a plurality of different types of seal surfaces. As compared with the case of providing, assembly adjustment and position adjustment are easy. Then, by moving the movable member in the left-right direction, the position of the seal surface can be adjusted without moving the pair of top sealers on the pair of rails.

According to the top seal device described in the above (1) to ( 4 ) of the present invention, different types of top seal widths and different types of seal forms can be used together.

1 is a schematic view of a pillow packaging machine including a top seal device according to a first embodiment of the present invention. It is an external appearance perspective view of the top seal device concerning a 1st embodiment, (A) shows the state where a pair of upper and lower top sealers were retracted mutually, and (B) shows the state where a pair of upper and lower top sealers contacted each other Show. It is sectional drawing of the top seal apparatus shown by FIG. 2, (A) shows the state by which the top sealer is being fixed to the position which performs a top seal with a narrow top seal width, (B) has fixed the top sealer. (C) shows a state in which the top sealer is fixed at a position where a top seal with a wide top seal width is performed. The case where a top seal with a narrow top seal width is performed with the top seal device shown in FIG. 2 is shown, (A) is a top view, and (B) is a cross-sectional view. FIG. 2 shows a case where a top seal with a narrow top seal width and a top seal with a wide top seal width are performed with the top seal device shown in FIG. 2, (A) is a top view, and (B) is a cross-sectional view. It is an external appearance perspective view of the top seal apparatus which concerns on 2nd Embodiment. It is sectional drawing of the top seal apparatus shown by FIG. 6, (A) shows the state by which the top sealer is being fixed to the position which performs a top seal with a narrow top seal width, (B) has fixed the top sealer. (C) shows a state where the top sealer is fixed at a position where a top seal with a wide top seal width is performed, and (D) shows a state where the top sealer is located at a position where a top seal with a wider top seal width is performed. Indicates a fixed state. FIG. 6 shows a case where a top seal with a narrow top seal width is performed with the top seal device shown in FIG. 6, (A) is a top view, and (B) is a cross-sectional view. FIG. 6 shows a case where a top seal with a narrow top seal width and a top seal with a wide top seal width are performed with the top seal device shown in FIG. 6, (A) is a top view, and (B) is a cross-sectional view. FIG. 6 shows a case where a top seal having a wider top seal width is performed with the top seal device shown in FIG. 6, (A) is a top view, and (B) is a cross-sectional view. It is an external appearance perspective view of the top seal apparatus which concerns on 3rd Embodiment. It is an external appearance perspective view of the top seal apparatus which concerns on 4th Embodiment. (A) is an external appearance perspective view of the top seal apparatus which concerns on 5th Embodiment, (B) is sectional drawing of the top seal apparatus. It is a front view of the top seal device concerning a 6th embodiment. It is an external appearance perspective view of a pillow package, (A) shows a thing with a narrow top seal width, (B) shows a thing with a wide top seal width.

  Hereinafter, a top seal device according to an embodiment of the present invention will be described in detail with reference to the drawings.

  [First Embodiment] First, the structure of a pillow packaging machine 1 provided with a top seal device 15 will be described with reference to FIG. FIG. 1 is a schematic view of a pillow packaging machine 1. In addition, in this figure and each subsequent figure, one part structure is abbreviate | omitted suitably and drawing is simplified.

  A pillow packaging machine 1 shown in FIG. 1 is used in a line for sequentially packaging articles XA1 such as food and daily necessities. The pillow wrapping machine 1 includes an article supply device 2, a packaging material supply device 3, and a packaging machine body 4.

  Each part of the pillow wrapping machine 1 is comprehensively controlled by a control unit (not shown). The control unit includes a CPU, a RAM, a ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and various programs are executed to realize various functions. The RAM is used as a work area for the CPU. The ROM stores a basic OS and programs executed by the CPU.

  The article supply device 2 conveys the article XA1 at regular intervals and sequentially supplies the article XA1 to the downstream packaging machine body 4. This article supply apparatus 2 is configured by a finger conveyor. Specifically, the article supply apparatus 2 includes a conveyance surface (not shown) having a slit, a side guide (not shown) for guiding the article XA1 on the conveyance surface from the side, and a drive sprocket (not shown). A driven sprocket 5, an annular chain 6 that travels by being hooked on these sprockets, a plurality of fingers 7 attached to the chain 6 at equal intervals, and a servo motor (not shown) as a power source ) And.

  The drive sprocket is rotated by the drive of the servo motor. The driven sprocket 5 rotates in conjunction with the driving sprocket as the chain 6 travels. The chain 6 travels so as to circulate by the rotation of the driving sprocket. The plurality of fingers 7 protrude upward from below the conveyance surface via the slits. The plurality of fingers 7 travel on the conveying surface by the travel of the chain 6. Accordingly, the plurality of fingers 7 push the article XA1 on the transport surface and send it out to the packaging machine body 4.

  The packaging material supply device 3 continuously supplies a packaging material YA1 such as a strip-shaped film. Specifically, the packaging material supply device 3 includes a pair of original fabric shafts 8 that hold the original fabric roll YB1, and guide rollers 9 that guide the packaging material YA1 fed out (stretched) from the original fabric roll YB1. And. The pair of original fabric shafts 8 is provided so as to be rotated by a drive motor (not shown), and holds the original fabric roll YB1. One of the pair of raw rolls YB1 is used, and the other is used as a spare. The guide roller 9 guides the packaging material YA1 stretched from the original roll YB1 into a strip shape and supplies it to the packaging machine body 4. As a method of paying out the packaging material YA1 from the original fabric roll YB1, instead of adopting the above-mentioned original fabric driving method, a feed roller is provided separately, and the feed roller is moved to draw out the packaging material YA1. A driving method may be adopted.

  The packaging machine body 4 packages the article XA1 supplied from the article supply device 2 with the packaging material YA1 supplied from the packaging material supply device 3. Specifically, the packaging machine body 4 includes a bag making device 10, a pinch roller 11, a center seal device 12, a first transport device 13, an upper presser device 14, and a top seal device (end seal device) 15. And a second transport device 16.

  The bag making device 10 forms the packaging material YA1 supplied from the packaging material supply device 3 in a cylindrical shape so that both left and right end edges perpendicular to the conveying direction (front-rear direction) of the article XA1 overlap each other. Further, the bag making device 10 supplies the article XA1 supplied from the article supply device 2 to the packaging material YA1 that is bag-formed in a cylindrical shape. Thereby, the article XA1 is wrapped in the packaging material YA1 that is formed into a cylindrical shape.

  The pinch roller 11 sandwiches both end edges (hereinafter referred to as a center seal portion) of the packaging material YA1 that overlap each other, and applies a conveying force to the center seal portion.

  The center seal device 12 includes a pair of bar sealers 12a and a press roller 12b. The center seal device 12 heats the center seal portion with a pair of bar sealers 12a. Then, the center seal device 12 performs center sealing by pressing the heated center seal portion with a press roller 12b.

  The first transport device 13 transports the center-sealed cylindrical packaging material YA1 along with the article XA1 wrapped in the packaging material YA1 onto the transport surface 13a toward the top seal device 15. The first transport device 13 expands and contracts the transport surface 13 a in the transport direction in accordance with the box motion of the top seal device 15.

  The upper pressing device 14 is disposed above the first transport device 13 and presses the article XA1 transported to the first transport device 13 together with the packaging material YA1 from above. Thereby, the article XA1 is conveyed while maintaining the horizontal state.

  The top seal device 15 uses a well-known box motion that revolves the pair of upper and lower top sealers 20 and 21 along a predetermined locus, and sets the top sealers 20 and 21 for each pitch according to the length of the article XA1 being conveyed. A top seal (end seal, horizontal seal) in the left-right direction of the packaging material YA1 that is formed into a cylindrical shape so as to wrap the article XA1 sandwiched between the seal surfaces 20a, 20b, 21a, 21b (see FIG. 2). And cut. Thereby, pillow package ZA1 or ZA2 (illustration ZA1) is manufactured. The top seal device 15 is a main part of the present invention, and details will be described later.

  The second transport device 16 transports the pillow package ZA1 from the top seal device 15 on the transport surface 16a. The second transport device 16 expands and contracts the transport surface 16 a in the transport direction in accordance with the box motion of the top seal device 15.

Next, the configuration of the top seal device 15 will be described with reference to FIGS. 2 and 3. FIG. 2 is an external perspective view of the top seal device 15. FIG. 2A shows a state in which the pair of upper and lower top sealers 20 and 21 are retracted from each other. FIG. 2B shows a state in which a pair of upper and lower top sealers 20 and 21 are in contact with each other. FIG. 3 is a cross-sectional view of the top seal device 15. FIG. 3A shows a state in which the top sealers 20 and 21 are fixed at positions where a top seal with a narrow top seal width w ₁ is performed. FIG. 3B shows a state where the top sealers 20 and 21 are not fixed. FIG. 3C shows a state in which the top sealers 20 and 21 are fixed at positions where a top seal with a wide top seal width w ₂ is performed.

  2A and 2B, the top seal device 15 includes a pair of upper and lower top sealers 20 and 21, a pair of upper and lower rails 22 and 23, a movable member (not shown), Adjustment means (not shown), and the like.

The top sealer 20 disposed above is supported on a rail 22 disposed above by a so-called stamping structure so as to be movable in the left-right direction. The top sealer 20 has two types of seal surfaces 20a and 20b facing downward so as to face the top sealer 21 disposed below. The two types of seal surfaces 20a and 20b are arranged so as to be aligned in the left-right direction. These two sealing surfaces 20a, 20b may have different widths _W 1, _{W 2} to each other. Specifically, the seal surface 20a has a width W ₁ (= w ₁ × 2) for performing a top seal with a narrow top seal width w ₁ (see FIG. 4). The seal surface 20b has a width W ₂ (= w ₁ + w ₂ ) for performing a top seal with a narrow top seal width w ₁ (see FIG. 5) and a top seal with a wide top seal width w ₂ (see FIG. 5). Have

A hole punch (not shown) is provided on the seal surface 20b in order to form a hole for hanging and displaying the pillow package ZA2. The two types of sealing surfaces 20a and 20b are switched and selectively used by the top sealer 20 moving in the left-right direction. The top sealer 20, the left-right direction of the end portion (left front end portion of the drawing) 20c has substantially the same width _{W 2} as broad seal surface 20b having a width _{W 2.} The position of the end in the front-rear direction at the end 20c is aligned with the position of the end in the front-rear direction on the seal surface 20b. The sealing surfaces 20a and 20b can be switched manually or automatically. In the case of automatic switching, a power source such as a servo motor and an air cylinder, a power transmission mechanism, and the like are provided.

The top sealer 21 disposed below is supported on a rail 23 disposed below by a so-called stamping structure so as to be movable in the left-right direction. The top sealer 21 has two types of seal surfaces 21a and 21b facing upward so as to face the top sealer 20 disposed above and to correspond to the seal surfaces 20a and 20b of the top sealer 20. Have. The two types of seal surfaces 21a and 21b are arranged so as to be aligned in the left-right direction. These two sealing surfaces 21a, 21b may have different widths _W 1, _{W 2} to each other. Specifically, the sealing surface 21a has a width W ₁ for performing narrow top seal of the top seal width w _1. Sealing surface 21b has a width W ₂ for performing narrow top seal and a top seal broad top seal width w ₂ of the top seal width w _1. The seal surface 21a faces the seal surface 20a of the top sealer 20 disposed above. The seal surface 21b faces the seal surface 20b of the top sealer 20 disposed above.

A hole punch (reference numeral omitted) is provided on the seal surface 21b in order to form a hole for suspending and displaying the pillow package ZA2. And the kind of sealing surfaces 21a and 21b are switched and used selectively by the top sealer 21 moving in the left-right direction. The top sealer 21, 21c (the end of the left front of the drawing) the left and right direction of the end portion has substantially the same width _{W 2} as broad seal surface 21b width _{w 2.} The position of the end in the front-rear direction at the end 21c is aligned with the position of the end in the front-rear direction on the seal surface 21b. The sealing surfaces 21a and 21b are switched manually or automatically together with the switching of the sealing surfaces 21a and 21b of the top sealer 21 disposed above.

The pair of top sealers 20 and 21 are formed with a pair of holes (not shown) penetrating in the left-right direction, and a cartridge heater for heating is inserted into the pair of holes. The number of cartridge heaters may be increased according to the top seal width. Specifically, the seal surface 20b to perform a wide top seal of the top seal width w _2, the top sealer 20, 21 in 21b, may be inserted into the two or more cartridge heaters.

  The pair of upper and lower rails 22 and 23 are arranged along the left-right direction so as to cross the conveyance path of the article XA1 (see FIG. 1). The rail 22 disposed above supports the top sealer 20 so as to be movable in the left-right direction. The rail 23 arranged below supports the top sealer 21 so as to be movable in the left-right direction. In the case of the top sealers 20 and 21 having two types of seal surfaces 20a, 20b, 21a, and 21b as in the present embodiment, the inner side walls of the rails 22 and 23 and the side surfaces of the end portions of the top sealers 20 and 21 are used. To position.

  The movable member (not shown) is a frame material for adjusting the position of the seal surfaces 20a, 20b, 21a, 21b in the left-right direction, and is provided so as to be movable in the left-right direction by an adjusting means (not shown). A pair of rails 22 and 23 are attached to the movable member. As a result, the movable member moves in the left-right direction integrally with the pair of rails 22, 23. As a result, the position of the sealing surfaces 20a, 20b, 21a, 21b is adjusted without moving the pair of top sealers 20, 21 on the pair of rails 22, 23 by moving the movable member in the left-right direction by the adjusting means. to enable. The adjusting means may adopt a ball screw structure or the like that is manually moved, or a structure or the like that is automatically moved.

Next, the operation of the top seal device 15 will be described with reference to FIGS. 4 and 5. FIG. 4 shows a case where the top seal device 15 performs a top seal with a narrow top seal width w ₁ . FIG. 4A is a top view. FIG. 4B is a cross-sectional view. FIG. 5 shows a case where the top seal device 15 performs a top seal with a narrow top seal width w _{1 and} a top seal with a wide top seal width w ₂ . FIG. 5A is a top view. FIG. 5B is a cross-sectional view.

FIG. 4 (A) and 4 as shown in FIG. 4 (B), the packaging material YA1 which is Seibukuro into a cylindrical shape so as to enclose the article XA1 being conveyed sandwiched between the sealing surfaces 20a, 21a having a width _{W 1} in that for sealing and cutting (from the front back direction in the drawing) to the left and to the right, the top seal width pillow package ZA1 of w ₁ is manufactured.

Figure 5 (A) and 5 as shown in FIG. 5 (B), the packaging material YA1 which is Seibukuro into a cylindrical shape so as to enclose the article XA1 being conveyed sandwiched between the sealing surfaces 20b, 21b having a width _{W 2} in that for sealing and cutting (from the front back direction in the drawing) to the left and to the right, the top seal width pillow package ZA2 of w ₁ and w ₂ are produced.

As described above, according to the top seal device 15, the top sealers 20 and 21 are moved in the left-right direction along the rails 22 and 23 to switch the seal surfaces 20a, 20b, 21a, and 21b, thereby different types of top seals. The widths w ₁ and w ₂ can be shared.

The top sealer 20 and 21, the left-right direction of the end portion 20c, 21c is widest _{W 2} broad sealing surface 20b, since substantially have the same width _{W 2} and 21b, the wide seal, and the seal pressure of the narrow seal Can be made uniform.

  And when moving a movable member (illustration omitted) in the left-right direction, the top sealers 20 and 21 are each an integral unit having a plurality of different types of seal surfaces 20a, 20b, 21a and 21b. As compared with the case of providing a plurality of separate top sealers, assembly adjustment and position adjustment are easy. Further, by moving the movable member in the left-right direction, the position of the seal surfaces 20a, 20b, 21a, 21b can be adjusted without moving the pair of top sealers 20, 21 on the pair of rails 22, 23. Is possible.

[Second Embodiment] Next, the configuration of the top seal device 35 will be described with reference to FIGS. FIG. 6 is an external perspective view of the top seal device 35. FIG. 7 is a cross-sectional view of the top seal device 35. FIG. 7A shows a state in which the top sealers 40 and 41 are fixed at positions where a top seal with a narrow top seal width w ₁ is performed. FIG. 7B shows a state where the top sealers 40 and 41 are not fixed. FIG. 7C shows a state in which the top sealers 40 and 41 are fixed at positions where a top seal with a wide top seal width w ₂ is performed. FIG. 7D shows a state in which the top sealers 40 and 41 are fixed at positions where a top seal having a wider top seal width w ₃ is performed.

  Here, only the characteristic part of the top seal device 35 will be described, and description of the same configuration, operation, and effect as the top seal device 15 will be omitted as appropriate. In addition, only the characteristic portions will be described in the embodiments described below.

  As shown in FIG. 6, the top seal device 35 includes a pair of upper and lower top sealers 40, 41, a pair of upper and lower rails 42, 43, a fixing means 45 (see FIG. 7), a movable member (not shown), Adjusting means (not shown), and the like.

The top sealer 40 disposed above has three types of seal surfaces 40a, 40b, and 40c. Three sealing surfaces 40a, 40b, 40c is different widths _{W 1,} W 2, _{W 3} each other. Specifically, the seal surface 40a has a width W ₁ (= w ₁ × 2) for performing a top seal with a narrow top seal width w ₁ (see FIG. 8). The seal surface 40b has a width W ₂ (= w ₁ + w ₂ ) for performing a top seal with a narrow top seal width w ₁ (see FIG. 9) and a top seal with a wide top seal width w ₂ (see FIG. 9). . The seal surface 40c has a width W ₃ (= w ₃ × 2) for performing a top seal having a wider top seal width w ₃ (see FIG. 10). The top sealer 40, 40d (an end portion of the left front of the drawing) the left and right direction of the end portion has substantially the same width W ₃ and a broad sealing surface 40c Most width W _3.

The top sealer 41 disposed below has three types of seal surfaces 41a, 41b, and 41c. Three sealing surface 41a, 41b, 41c is different widths _{W 1,} W 2, _{W 3} each other. Specifically, the seal surface 41a has a width W ₁ (= w ₁ × 2) for performing a top seal with a narrow top seal width w ₁ (see FIG. 8). The seal surface 41b has a width W ₂ (= w ₁ + w ₂ ) for performing a top seal with a narrow top seal width w ₁ (see FIG. 9) and a top seal with a wide top seal width w ₂ (see FIG. 9). . The seal surface 41c has a width W3 (= w ₃ × 2) for performing a top seal having a wider top seal width w ₃ (see FIG. 10). The top sealer 41, 41d (an end portion of the left front of the drawing) the left and right direction of the end portion has substantially the same width W ₃ and a broad sealing surface 41c Most width W _3. The top seal width w ₃ by the top sealers 40 and 41 may be set to be the same width as the top seal width w ₂ . That is, the sealing surface 40c, 41c may be previously set to have a width (= w ₂ × ₂₎ for performing a wide top seal of the top seal width w _2.

As shown in FIG. 7, depressions 41e, 41f, and 41g are appropriately formed on the bottom surface of the lower top sealer 41 at positions to be positioned. 7 as (A), the positioning means 45 to become a ball plan when the tip of the jar is in the recess 41e, a pair of upper and lower top sealer 40 in position for a narrow top seal of the top seal width w _1, 41 is fixed. As shown in FIG. 7B, when the tip of the ball plunger is not in the recesses 41e, 41f, 41g, the pair of upper and lower top sealers 40, 41 are not fixed. As shown in FIG. 7 (C), when the tip of the ball plunger is in the recess 41f, to secure the upper and lower pair of top sealer 40, 41 in position for a wide top seal of the top seal width w _2. As shown in FIG. 7 (D), when the tip of the ball plunger is in the recess 41 g, to secure the upper and lower pair of top Sea 40, 41 in a position to perform a wider top seal of the top seal width w ₃ .

Next, the operation of the top seal device 35 will be described with reference to FIGS. FIG. 8 shows a case where the top seal device 35 performs a narrow top seal with a top seal width w ₁ . FIG. 8A is a top view. FIG. 8B is a cross-sectional view. FIG. 9 shows a case where the top seal device 35 performs a top seal with a narrow top seal width w _{1 and} a top seal with a wide top seal width w ₂ . FIG. 9A is a top view. FIG. 9B is a cross-sectional view. FIG. 10 shows a case where a top seal having a wider top seal width w ₃ is performed by the top seal device 35. FIG. 10A is a top view. FIG. 10B is a cross-sectional view.

As shown in FIG. 8 (A) and 8 (B), the packaging material YA1 which is Seibukuro into a cylindrical shape so as to enclose the article XA1 being conveyed sandwiched between the sealing surfaces 40a, 41a having a width _{W 1} in that for sealing and cutting (from the front back direction in the drawing) to the left and to the right, the top seal width pillow package ZA1 of w ₁ is manufactured.

As shown in FIG. 9 (A) and FIG. 9 (B), the packaging material YA1 which is Seibukuro into a cylindrical shape so as to enclose the article XA1 being conveyed sandwiched between the sealing surfaces 40b, 41b having a width _{W 2} in that for sealing and cutting (from the front back direction in the drawing) to the left and to the right, the top seal width pillow package ZA2 of w ₁ and w ₂ are produced.

Figure 10 (A) and as shown in FIG. 10 (B), the packaging material YA1 which is Seibukuro into a cylindrical shape so as to enclose the article XA1 being conveyed sandwiched between the sealing surfaces 40c, 41c having a width _{W 3} in that for sealing and cutting (from the front back direction in the drawing) to the left and to the right, the top seal width pillow package ZA3 of w ₃ is manufactured.

  [Third Embodiment] Next, the configuration of the top seal device 55 will be described with reference to FIG. FIG. 11 is an external perspective view of the top seal device 55.

  As shown in FIG. 11, the top seal device 55 includes a pair of upper and lower top sealers 20 and 21, a pair of upper and lower rails 22 and 23, a connecting means 24, a movable member (not shown), and an adjusting means (not shown). And the like.

  The connecting means 24 connects the pair of upper and lower top sealers 20 and 21 to each other so that the top sealers 20 and 21 are integrated with each other and movable in the left-right direction. Specifically, the connecting means 24 includes a pair of flanges 24a fixed to the upper top sealer 20, a pair of flanges 24b fixed to the lower top sealer 21, and a flange 24a for information fixed to the lower flange 24b. And a pair of connecting rods 24c penetrating through. The flanges 24a and 24b move so as to be close to and away from each other along the connecting rod 24c. As a result, the pair of upper and lower top sealers 20 and 21 are separated from each other.

  As described above, according to the top seal device 55, the top sealers 20 and 21 arranged vertically move together in the left-right direction, so that the seal surfaces 20a and 20b of one top sealer 20 are changed. Thus, it is possible to prevent the problem of forgetting to change the sealing surfaces 21a and 21b of the other top sealer 21.

  [Fourth Embodiment] Next, the configuration of the top seal device 65 will be described with reference to FIG. FIG. 12 is an external perspective view of the top seal device 65.

  As shown in FIG. 12, the top seal device 65 includes a pair of upper and lower top sealers 40 and 41, a pair of upper and lower rails 42 and 43, a connecting means 44, and a positioning means 45 (FIG. 7 showing the second embodiment). ), A movable member (not shown), an adjusting means (not shown), and the like.

  [Fifth Embodiment] Next, the configuration of the top seal device 75 will be described with reference to FIG. FIG. 13A is an external perspective view of the top seal device 75. FIG. 13B is a cross-sectional view of the top seal device 75.

  13A and 13B, the top seal device 75 includes a pair of upper and lower top sealers 80 and 81, a pair of upper and lower rails 82 and 83, positioning means 85, and a movable member ( (Not shown), adjusting means (not shown), and the like.

  The top sealer 80 disposed above is fitted into a rail 82 disposed above and is supported so as to be movable in the left-right direction. The top sealer 81 disposed below is fitted into a rail 83 disposed below, and is supported so as to be movable in the left-right direction.

  The ball plunger which is the positioning means 85 is disposed so as to pass through the center of each rail 82 and 83, and the top end of the ball plunger enters the recess formed in the top sealers 80 and 81. Position.

  [Sixth Embodiment] Next, the configuration of the top seal device 95 will be described with reference to FIG. FIG. 14 is a front view of the top seal device 95.

  As shown in FIG. 14, the top seal device 95 includes a pair of upper and lower top sealers 100, 101, a drive mechanism 102, a movable member 103, an adjustment unit 104, and the like.

  The top sealer 100 disposed above has two types of seal surfaces 100a and 100b so as to be aligned in the left-right direction. The two types of seal surfaces 100a and 100b have different widths (not shown). These two types of seal surfaces 100a and 100b are selectively used by being switched by moving the movable member 103 in the left-right direction.

  The top sealer 101 disposed below has two types of seal surfaces 101a and 101b so as to be aligned in the left-right direction. The two types of seal surfaces 101a and 101b have different widths (not shown). These two types of seal surfaces 101a and 101b are selectively used by being switched by moving the movable member 103 in the left-right direction. The seal surface 101a faces the seal surface 100a of the top sealer 100 disposed above. The seal surface 101b faces the seal surface 100b of the top sealer 100 disposed above.

  The drive mechanism 102 realizes a top seal and a cut by a well-known box motion in which a pair of upper and lower top sealers 100 and 101 are revolved along a predetermined locus. The box motion by the drive mechanism 102 is well known, and a description thereof is omitted here. For details, refer to, for example, JP 2010-105669 A.

  A pair of upper and lower top sealers 100 and 101 are attached to the movable member 103. The movable member 103 is moved in the left-right direction integrally with the pair of upper and lower top sealers 100, 101 by the adjusting means 104.

  The adjusting means 104 moves the movable member 103 in the left-right direction. Thereby, the plurality of sealing surfaces 100a, 100b, 101a, 101b are switched. In addition, in this embodiment, the ball screw structure moved manually is employ | adopted, However, It is not limited to this structure, The structure moved automatically may be sufficient.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and technical idea thereof.

  That is, in each of the above embodiments, the position, size, length, shape, material, orientation, and the like of each component can be changed as appropriate. For example, the types of seal surfaces may be four or more as well as two or three.

  Or you may apply the component of said each embodiment to other embodiment in the possible range.

  Alternatively, in each of the above embodiments, the top seal devices 15, 35, 55, 65, 75, and 95 that perform the top seal by the box motion have been described as examples. However, the present invention is not limited to this, and the rotary type The top seal device may be used.

  Or in each said embodiment, although the case where a ball plunger acted only with respect to the top sealers 21 and 41 arrange | positioned below was demonstrated as an example, this invention is not limited to this, Upward The ball plunger may act only on the arranged top sealers 20, 40, or the ball plunger may act on each of the pair of upper and lower top sealers 20, 21, 40, 41. .

  Alternatively, in each of the above embodiments, the case where the ball plunger is provided as the positioning means 45 for positioning the top sealers 40, 41, 80, 81 has been described as an example, but the present invention is not limited to this. For example, a mechanism having a click stop function may be used.

Alternatively, the above-described embodiments, the top seal device 15,35,55,65,75,95 for producing a different pillow package ZA1, ZA2, ZA3 the top seal width _{w 1,} w 2, _{w 3} in Example Description However, the present invention is not limited to this, and may be a top seal device having a different seal form. Examples of the seal form include a seal form using each sealer such as a label sealer, a normal width sealer, a heat sealer, and a fusing sealer. For example, it can be configured to switch between a label sealer and a normal width sealer, or to switch between a heat sealer and a fusing sealer.

  More specifically, the mode in which the movable member to which the top sealer having a plurality of types of seal surfaces is attached is moved in the left-right direction is one (integral) top sealer having a plurality of types of seal surfaces. However, the present invention is not limited to this, and a plurality of different top sealers may be attached to the movable member.

15, 35, 55, 65, 75, 95 Top seal device 20, 21, 40, 41, 80, 81, 100, 101 Top sealer 20a, 20b, 21a, 21b, 40a, 40b, 40c, 41a, 41b, 41c , 80a, 80b, 81a, 81b, 100a, 100b, 101a, 101b Seal surface 20c, 21c, 40d, 41d, 80c, 81c End portion 22, 23, 42, 43, 82, 83 Rail 45, 85 Positioning means XA1 Article YA1 packaging materials W _{1, W} 2, _{W 3} width

Claims (4)

A top seal device that performs sealing and cutting by sandwiching a packaging material bag-wrapped so as to wrap an article in a lateral direction perpendicular to the conveyance direction of the packaging material, with a sealing surface of a pair of top sealers,
Each of the top sealers includes a plurality of sealing surfaces of different types so as to be arranged in the left-right direction,
The plurality of sealing surfaces are configured to be switched by moving each top sealer in the left-right direction ,
The plurality of sealing surfaces have different widths from each other,
Each of the top sealers is characterized in that the left and right end portions have substantially the same width as the widest seal surface.
Top seal device. The pair of top sealers move integrally in the left-right direction,
The top seal device according to claim 1. The pair of top sealers are attached to a movable member that moves in the left-right direction, and move integrally in the left-right direction by moving the movable member .
The top seal device according to claim 2. A pair of rails that movably support the pair of top sealers in the left-right direction ;
The pair of rails are attached, and the movable member moves in the left-right direction integrally with the pair of rails.
The top seal device according to claim 1 or 2 .

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