JPH08230811A - Packaging device - Google Patents

Abstract

PURPOSE: To ensure the welding of a packaging sheet by the heating of a heater. CONSTITUTION: After a packaging sheet 1 is clamped and heated by a pair of clamping members 14, 16 and a heater 9, the heater 9 is moved from a clamping position to a retracting position and, thereafter, the clamping members 14, 16 are moved from a clamping position to a retracting position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an object to be packaged (eg vegetables such as lettuce and cabbage, or fruits such as melon and apple).
The present invention relates to a packaging device for agricultural crops, which is wrapped with a packaging sheet.

[0002]

2. Description of the Related Art One example of the above-mentioned packaging device is disclosed in Japanese Patent Application Laid-Open No. 3-133710. This packaging apparatus is provided with a packaging table (4 in FIG. 1 of the publication) provided with an opening (8 in FIG. 1 of the publication) through which the article to be packaged falls, and the packaging sheet ( An F) in FIG. 1 of the publication is placed, and an object to be packaged (A in FIG. 1 of the publication) is manually pushed in by an operator from above to drop it. As a result, the packaging sheet is squeezed at the outer edge of the opening,
The article to be packaged is supported by a lower support stand (58 in FIGS. 1 and 4 of the publication) while being wrapped in a packaging sheet.

As a result, a pair of clamping members on the lower side of the packaging table (12 and 16 in FIGS. 4 and 5 of the publication).
However, the package is advanced from the lateral direction to the side of the object to be packaged, and the upper portion of the packaging sheet is clamped, and the upper portion of the packaging sheet is clamped by a pair of heaters (20 in FIGS. 4 and 5 of the publication). It is heated and welded, and the packaging sheet wrapping the article to be packaged is sealed so as not to open. in this case,
A pair of heaters is fixed to each of the pair of holding members.

[0004]

As described above, in the case where the packaging sheet is sandwiched by the pair of heaters, heated and welded to seal the packaging sheet, after heating the upper portion of the packaging sheet with the heater, If the heater is separated from the packaging sheet and a little cooling time is allowed, the packaging sheet will be sufficiently welded and the packaging sheet will not be opened after the packaging is completed.

However, since the heater is fixed to the sandwiching member in the above-mentioned packaging device, the above-mentioned publication (Japanese Patent Application Laid-Open No. 3-1 / 1993).
As shown in FIG. 5 of Japanese Unexamined Patent Publication (Kokai) No. 33710), after the upper part of the packaging sheet is sandwiched and heated by the sandwiching member and the hitter, when the sandwiching member separates from the right and left of the paper surface, the heater together with the sandwiching member is also located above the packaging sheet. You will be separated from the part. In this way, when the heater is separated from the packaging sheet together with the sandwiching member, the heated portion (upper portion) of the packaging sheet is not yet cooled after the heater is separated,
Since the holding member is separated from the upper part of the packaging sheet, the welding of the packaging sheet may be insufficient and the packaging sheet may be opened after the packaging is completed. An object of the present invention is to sufficiently weld a packaging sheet in a packaging device configured to sandwich the upper portion of the packaging sheet with a pair of heaters and heat and fuse the sheets to seal the packaging sheet. There is.

[0006]

A feature of the present invention is that the packaging apparatus as described above is configured as follows. That is, [1] a packaging table is provided for placing a packaging sheet and provided with an opening through which the packaged article falls, and when the packaged article is dropped into the opening from above, the packaging sheet is formed at the outer edge of the aperture. A support base that is configured to squeeze and wrap the packaged product in a packaging sheet, and that supports the packaged product that is wrapped in the packaging sheet and that has fallen into the opening from below, and a support base that is below the packaging platform. A pair of clamping members for laterally clamping the upper portion of the packaging sheet in the upper object to be packaged, and a pair of clamping members for reciprocating movement between the clamping position of the packaging sheet and the retracted position apart from the upper portion of the packaging sheet. 1 drive means, a pair of heaters for sandwiching and heating the upper part of the packaging sheet in the article to be packaged on the support table on the lower side of the packaging table from the lateral direction to fuse and seal, and a pair of heaters Sandwich of A second driving means for reciprocatingly driving to a retracted position away from the upper position of the packaging sheet and the upper portion of the packaging sheet, and when the article to be packaged is supported by the support base while being wrapped in the packaging sheet, a holding member and a heater. So that the heater is moved from the retracted position to the sandwiching position, the first control means for activating the first and second driving means, and the heater after the first and second driving means are operated by the first control means, the heater is at the sandwiching position. The second control means for activating the first and second driving means is provided such that the holding member is moved from the sandwiched position to the retracted position side after being operated to be moved from the retracted position side to the retracted position side.

[2] In the configuration of the above item [1], after the heater is moved from the sandwiched position to the retracted position after the operation of the first and second drive means by the first control means, the sandwiching member is set for a set time. The second control means is configured so that it is stopped at the sandwiching position only during the period and the sandwiching member is moved from the sandwiching position to the retracted position side after the set time has elapsed.

[0008]

[Action]

[I] When configured as in the preceding paragraph [1], for example, as shown in FIG. 7, when the article A to be packaged is dropped from the opening 2a into the support base 3, for example, as shown in FIG. 8 and FIG. 14, 16 and the pair of heaters 9 are moved from the retracted position to the sandwiching position, and the upper portion 1a of the packaging sheet 1 is moved.
Is sandwiched, and the upper portion 1a of the packaging sheet 1 is heated and welded by the heater 9.

When the heating by the heater 9 is completed, as shown in FIG. 9 to FIG.
First, the pair of heaters 9 are moved from the sandwiched position to the retracted position side, the heater 9 is separated from the upper portion 1a of the packaging sheet 1, and then, as shown in FIG. 11, the pair of sandwiching members 14 and 16 are removed from the sandwiched position. Transfer operation is performed to the retreat position side. As a result, the heater 9 is separated from the upper portion 1a of the packaging sheet 1 after being heated by the heater 9, but the state in which the pair of clamping members 14, 16 sandwich the upper portion 1a of the packaging sheet 1 is only for a short time. Since this occurs, the portion heated by the heater 9 is cooled during this time, and the welding of the packaging sheet becomes sufficient.

[II] When configured as in the above item [2],
As in the case of the configuration of the above [1], the "action" described in the above [I] is provided, and in addition to this, the following "action" is provided. When configured as in the above item [2], heating by the heater 9 is completed, and as shown in, for example, FIG. 9 to FIG. 10, the pair of heaters 9 are moved from the sandwiched position to the retracted position side and the upper side of the packaging sheet 1 is operated. Once separated from the portion 1a, the pair of clamping members 14, 16 which are in the clamping position are not moved to the retracted position side immediately, and the pair of clamping members 14, 16 are set at the clamping position shown in FIG. After being stopped for a period of time, the pair of holding members 14 and 16 are transferred from the holding position to the retracted position.

As a result, the heater 9 separates from the upper portion 1a of the packaging sheet 1 after being heated by the heater 9,
The pair of holding members 14 and 16 is the upper portion 1 of the packaging sheet 1.
The state in which a is sandwiched is maintained longer than in the case of the configuration of the above-mentioned [1], and the portion heated by the heater 9 is further cooled during this, and the welding of the packaging sheet is further sufficient. It will be

[0012]

According to the first aspect of the present invention, in the packaging apparatus configured to sandwich the upper portion of the packaging sheet by the sandwiching member and the heater and heat and fuse the package to seal the packaging sheet, after heating by the heater. Although the heater was separated from the upper portion of the packaging sheet, a state in which the pair of sandwiching members sandwiched the upper portion of the packaging sheet 1 was generated, and the welding of the packaging sheet could be sufficiently performed. As a result, it is possible to reduce the situation in which the packaging sheet is opened after the end of packaging due to insufficient welding of the packaging sheet, and it is possible to improve the packaging performance of the packaging device.

According to the second aspect of the invention, as in the case of the first aspect, the above-mentioned "effect of the invention" is provided. According to the second aspect of the invention, the heater is separated from the upper portion of the packaging sheet after being heated by the heater, but the pair of sandwiching members forms the packaging sheet 1.
By maintaining the state that the upper part of the is sandwiched for a set time, the welding of the packaging sheet can be made more sufficient, and the packaging performance of the packaging device can be further improved. It was

[0014]

Embodiments of the present invention will be described below with reference to the drawings. (1) FIG. 14 shows the whole of the packaging device, in which one side of the packaging table 2 having the opening 2a in the center allows the packaging sheet 1 wound in a roll to freely rotate by the pair of supporting rollers 33. A cutting mechanism 34 in which a cutter (not shown) for the packaging sheet 1 is installed is disposed between the supporting roller 33 and the packaging table 2 which are supported. A drawing-out mechanism 35 for the packaging sheet 1 is arranged on the opposite side of the packaging table 2, and the drawing-out mechanism 35 has a drawing-out position and a cutting mechanism 34 shown in FIG.
It is configured so as to be freely movable across the holding position. Below the opening 2a of the packaging table 2, as shown in FIGS. 6 and 1, the support table 3 for the article A to be packaged, the first holding member 14 and the like are arranged.

(2) Next, the structure in the vicinity of the support base 3 arranged below the opening 2a of the packaging base 2 will be described. Figure 6
As shown in FIG. 1, the pair of left and right guide rails 5 arranged below the opening 2a of the packaging table 2 is slidable in the first and second directions.
The support member 6 is attached to the second support member 17 fixed to the upper portion of the first support member 6, and the support base 3 is supported so as to be able to fall sideways around the horizontal axis P1. The support base 3 is configured by bending four sides of a flat plate having a plus shape in a plan view upward, and an elastic material 4 such as sponge or soft rubber is attached to the outer surface of the support base 3. A pair of upper and lower sprockets 7 are arranged beside the guide rails 5, a chain 8 is wound around both sprockets 7, and a bracket 6a of the first support member 6 is connected to the chain 8. Accordingly, the sprocket 7 and the chain 8 are rotationally driven by the motor (not shown), so that the support base 3 is moved up and down.

The horizontal axis P3 at the left and right ends of the second support member 17
A pair of holding arms 18 is swingably supported around the holding arms 18, and a horizontally long sponge member 18a is provided at the upper end of the holding arms 18.
Are provided, and springs 19 for biasing the left and right holding arms 18 to swing toward the central support base 3 side are provided. By the motor 20 on the first support member 6,
7 is provided, and an operation arm 21 that is operated to switch between the up and down posture shown in FIG. 7 and the left and right posture shown in FIG. 7 is provided.
Are connected by.

(3) Next, a pair of plate-like first sandwiching members 14 (corresponding to sandwiching members) arranged below the opening 2a of the packaging table 2 and the second sandwiching member 16 (in the sandwiching member). (Corresponding), the structure of the heater 9 and the like will be described. As shown in FIGS. 1, 2 and 4, a round bar-shaped first guide rail 23 and a plate-shaped second guide rail 24 are arranged below the packaging table 2 on both sides of the opening 2a. Guide plate 12 on one side
Has been fixed. The boss portion 1 is provided at one end of the pair of support plates 13.
3a is fixed, and the boss portion 13a is fixed to the first guide rail 23.
A roller 13b slidably fitted on the second guide rail 24 is provided on the opposite side of the support plate 13. As a result, the pair of support plates 13 are arranged in
The heater 9 is fixed to each of the pair of support plates 13 so as to be slidably supported in the left-right direction of the paper surface of FIG.

As shown in FIGS. 1 and 2, the motor 28
An operation arm 28a that is rotationally driven by (corresponding to the first and second driving means) is provided, and one support plate 13 is provided.
The bracket 25 fixed to the boss portion 13a and the operation arm 28a are connected by the linkage rod 26.
The balance arm 27 is swingably supported around the vertical axis P4 of the fixed portion, and the roller 27a at one end of the balance arm 27 is inserted into the recess of the bracket 25.
Across the other end of 7 and the boss portion 13a of the other support plate 13,
The link rod 29 is connected.

As shown in FIGS. 1, 2 and 4, a plate-shaped first holding member 14 is slidably supported by a roller 13c supported by a support plate 13 within a range of an elongated hole 14a. A pair of tension springs 32 (corresponding to first and second driving means) are connected across the first holding member 14. The plate-shaped second holding member 16 is fixed to the pair of support pins 14b fixed downward to the first holding member 14.

As shown in FIGS. 2 and 4, below the support plate 13 opposite to the guide plate 12, a pair of holding arms 30 swinging in a direction orthogonal to the sliding direction of the support plate 13 is provided. There is. The holding arm 30 is supported on the lower side of the support plate 13 so as to be swingable around the vertical axis P2 of the fixed portion, and is provided with an oblong elongated hole 30a, which is provided on the back surface of the support plate 13. A pair of rollers 13d is inserted into the long hole 30a, and a guide plate 10 that supports the holding arm 30 so as not to face downward is installed over both rollers 13d.

With the above-described structure, when the operation arm 28a is driven to rotate 180 ° as shown in FIGS. 2 to 3, the support plate 13 on the right side of the paper is slid to the left side of the paper, and the support plate 13 is moved. Together with the first and second clamping members 1
4 and 16 are also slid to the left on the paper surface. In conjunction with this operation, the balance arm 27 swings clockwise in the drawing,
The link rod 29 is pulled rightward on the paper surface, and the support plate 13, the first and second holding members 14, 16 on the left side of the paper surface are slid rightward on the paper surface.

As described above, when the support plate 13 on the right side of the paper of FIG. 2 is slid to the left of the paper, the support plate 1
Interlocking with the movement of the third roller 13d, the pair of holding arms 30 opened up and down in the plane of the drawing are rocked so as to approach each other. When the operation arm 28a is rotationally driven by 180 ° in this way, the upper portion 1a of the packaging sheet 1 is narrowed and sandwiched by the first and second sandwiching members 14, 16 and the sandwiching arm 30.

(4) Next, the pull-out mechanism 35 for automatically pulling out the packaging sheet 1 from the packaging sheet 1 wound in a roll for packaging will be described. Figure 5 (a), (b)
As shown in FIG. 2, a pair of support plates 36 are slidably supported by rollers 36a along the left and right guide rails 2b of the packaging table 2, and a single support shaft 37 is laid across the left and right support plates 36. Thus, five operation arms 38 are independently fitted to the support shaft 37 so as to be swingable independently. A top plate 39 is erected and connected across the upper ends of the left and right support plates 36,
A spring 40 for urging each holding arm 38 toward the swinging side of the top plate 39 is provided, and the pullout mechanism 35 is configured.

The support shaft 37 is rotatably supported by the support plate 36, and the pair of arms 3 is provided on the left and right of the support shaft 37.
7a is fixed, and one rod 37b is erected and fixed across the left and right arms 37a. A fan-shaped gear 41 is swingably supported by a supporting shaft of a roller 36a of one support plate 36, and a link 42 is installed between the fan-shaped gear 41 and one arm 37a, and the fan-shaped gear 41 is rocked. A motor 43 that is driven dynamically is provided. The state shown in FIG. 5 (a) is a state in which the motor 43 is driven to push up the rod 37b to pull down each holding arm 38 from the top plate 39,
As shown in FIG. 5B, when the motor 43 is driven in the reverse direction and the rod 37b is pulled down, the holding arms 38 are lifted to the top plate 39 side by the urging force of the spring 40, and the end portion of the packaging sheet 1 is clamped. To do.

As shown in FIGS. 5A and 5B, one drive shaft 44 is arranged at one end of the packaging table 2, and a pair of drive sprockets 45 are fixed to both ends of the drive shaft 44. A motor 46 for rotating the drive shaft 44 is provided. One driven shaft 47 is arranged at the opposite end of the packaging table 2, and driven sprockets 48 are fixed to both ends of the driven shaft 47. A pair of left and right chains 49 is wound around the left and right drive sprockets 45 and the driven sprockets 48, and the left and right chains 49 are connected to the left and right support plates 36 of the drawer mechanism 35. With the above structure, the drive sprocket 45 is rotationally driven in the forward and reverse directions by the motor 46, thereby moving the drawer mechanism 35 along the guide rail 2b of the packaging table 2.

(5) Next, the overall flow of packaging in this packaging apparatus will be described with reference to FIGS. 12 and 13. (5) -1 As shown in FIG. 14, in a state in which one piece of the packaging sheet 1 cut into a predetermined length is placed on the packaging table 2, the operator manually puts the article A to be packaged on the packaging table 2 In the state where it is dropped into the opening 2a and the object A to be packaged is wrapped in the packaging sheet 1 to some extent and supported by the support base 3 as shown in FIG.
The left and right start-up switches 50 shown in are simultaneously pressed with both hands (step S1).

As a result, as shown in FIG. 7, the pair of holding arms 18 arranged on both sides of the support base 3 are oscillated to the side of the article A to be packaged, and the holding arms 18 support the article A to be packaged 3. (Step S2), the lowering operation of the support base 3 is started (Step S3), and a timer (not shown) starts counting the set time T1 (Step S4).

As shown in FIG. 7, an optical sensor 31 composed of a light emitter and a light receiver is arranged above the first holding member 14 so that the light detected by the light emitter is directly below the opening 2a of the packaging base 2. It is set to pass through. Thus, after the timer finishes counting the set time T1 (step S
5) When the light receiver of the optical sensor 31 receives the detection light from the light emitter (step S6), the support base 3 is stopped at that position (see the position shown in FIG. 7) (step S).
7). In this case, a plurality of rubber plate-shaped auxiliary throttle members 11 are provided below the opening 2a so as to surround the article A to be packaged, and the auxiliary throttle members 11 are moved along with the lowering operation of the support base 3.
Thereby, the packaging sheet 1 is squeezed well.

(5) -2 When the support base 3 stops at the position shown in FIG. 7 as described above, the pair of holding arms 18 are slightly opened (step S8), and the operation shown in FIGS. As shown in FIG. 3, the pair of support plates 13 are slid toward the support base 3 (step S9). In this case, in the state shown in FIG. 4, the support plate 13, the heater 9, the first and second holding members 14, 16 are provided.
Is located at the retracted position, and at this retracted position, the tension spring 32 and the roller 13c of the support plate 13 cause
The first holding member 14 is located closer to the support base 3 than the tip of the heater 9.
Is located, and the tip of the second holding member 16 is located closer to the support base 3 side than the tip of the first holding member 14.

In the above state, as shown in FIGS. 2 to 3,
When the support plate 13 is slid to the support base 3 side by the motor 28, first, the lower second holding member 16 and the holding arm 30 move the upper portion 1 of the packaging sheet 1 as shown in FIG.
Insert a. The first and second holding members 14 and 16 are connected to each other by the support pin 14b, and the tip of the first holding member 14 is retracted from the tip of the second holding member 16, so that the second holding member 16 on the lower side is connected. When the upper part 1a of the packaging sheet 1 is sandwiched and stopped, the upper first clamping member 14 is slightly separated from the upper part 1a of the packaging sheet 1 as shown in FIG. 8, and the upper part 1a is sandwiched lightly. (The above corresponds to the sandwiching positions of the first and second sandwiching members 14 and 16 and the first control means). Thereby, the article A to be packaged is wrapped in the packaging sheet 1.

Next, when the support plate 13 is further slid toward the support base 3 from the state shown in FIG. 8, the tension spring 32 is extended as shown in FIG. 9, and the first and second springs are extended.
While the holding members 14 and 16 are strongly pushed toward the holding side of the upper portion 1a of the packaging sheet 1, the heater 9 fixed to the support plate 13 causes the first and second holding members 14 and 16 to move.
The upper portion 1a of the packaging sheet 1 is sandwiched between them (corresponding to the sandwiching position of the heater 9 and the first control means).

When the upper portion 1a of the packaging sheet 1 is sandwiched by the first and second clamping members 14 and 16 and the clamping arm 30, the packaging sheet 1 is entirely lifted upward as shown in FIG. The object to be packaged A itself is also pulled up together with the packaging sheet 1 and floats up.
As a result, the object A to be packaged is tightened, and the wrinkles of the packaging sheet 1 are extended as a whole, so that a clean packaging can be expected. In this case, the holding arm 18 is slightly opened as described above (step S8), and the sponge member 18a of the holding arm 18 is separated from the object A to be packaged and the packaging sheet 1, and the first and second holding members 14 are moved. , 16 and the gripping arm 30 are advanced to the sandwiching position, the sponge member 18a of the holding arm 18 and the sponge member 18a of the holding arm 18 do not interfere with the pulling up of the packaging sheet 1 and the object to be packaged A. Since the article A does not rub against the article A, the article A to be packaged is not damaged.

(5) -3 As shown in FIG. 8, when the article A to be packaged is lifted from the support base 3 as the upper portion 1a of the packaging sheet 1 is sandwiched,
The support base 3 is slightly lifted and the packaged object A is moved to the second position.
The back surfaces of the holding member 16 and the holding arm 30 are lightly pressed (step S10). Next, the upper portion 1a of the packaging sheet 1 is heated by the heater 9 and the upper portion 1a is welded, and the upper portion 1a of the packaging sheet 1 is welded.
It becomes easy to separate a (step S11).

When the heating by the heater 9 is completed in the state shown in FIG. 9, the support plate 13 and the heater 9 are slightly separated from the upper portion 1a of the packaging sheet 1 and are operated to stop (step S12). . In this case,
The tension spring 32 that has been stretched in the state of FIG.
However, the state in which the upper portion 1a of the packaging sheet 1 is sandwiched by the first and second clamping members 14 and 16 is maintained.

As described above, the first and second holding members 14,
The state in which the heater 9 is slightly separated from the upper portion 1a of the packaging sheet 1 while the upper portion 1a of the packaging sheet 1 is sandwiched by 16 is maintained for a set time T2 (step S12), This set time T2
In the upper part 1a of the packaging sheet 1 between the heater 9
As a result, the heated portion is cooled and sufficient welding is achieved. Then, the set time T2 is, for example, 0 seconds, 1 second,
The setting can be arbitrarily changed in a plurality of steps such as 2 seconds (the above corresponds to the second control means).

In the state shown in FIG.
The pulling-out mechanism 35 stopped at the pulling-out position shown in (4) moves to the left side of the drawing to reach the holding position of the cutting mechanism 34, and by the top plate 39 and the holding arm 38 of the pulling-out mechanism 35,
The ends of the packaging sheet 1 are clamped (step S17).
In this case, as shown in FIGS. 5A and 5B, the support shaft 51 is laid across the lower portions of the left and right support plates 36 of the drawer mechanism 35, and the removal plate 52 is fixed to the center of the support shaft 51. .

As a result, as shown in FIG. 10, the upper and lower portions 1a of the packaging sheet 1 are sandwiched by the first and second clamping members 14 and 16, and the heater 9 is operated slightly away from the upper portion 1a of the packaging sheet 1. When the drawer mechanism 35 moves to the holding position side of the cutting mechanism 34 during the set time T2 which is stopped at, the removal plate 52 of the drawer mechanism 35 is removed.
Moves along the upper surface of the first holding member 14, and the removal plate 52
Thus, the upper portion 1a of the packaging sheet 1 is removed from the article A to be packaged and conveyed to the cutting mechanism 34 side. In this case, the upper and lower portions of the welded portion of the packaging sheet 1 are located above and below the first and second holding members 1
Since it is sandwiched and held by 4, 16, even if the upper portion 1a of the packaging sheet 1 is removed as described above, the welded portion will not be broken.

When the set time T2 in step S12 has elapsed, the support plate 13, the heater 9, and the first and second holding members 14, 16 are slid to the retracted position as shown in FIG. 11 (step S13). Next, the holding arm 18 is operated to open left and right to the original position (step S1).
4) The support base 3 is further lowered and laid down, and the article A to be packaged is discharged to the slide base 15 (see FIG. 14) and collected (step S15). As described above, the packaging of one article to be packaged A is completed, and thereafter, the support base 3 is again raised to the original position shown in FIG. 6 and stopped (step S16).

(5) -4 While the article A to be packaged is being packed in the above steps S12 to S16, the drawer mechanism 35 moves from the drawer position shown in FIG. It moves (during this, the upper portion 1a of the packaging sheet 1 is removed), and the end of the roll-shaped packaging sheet 1 is sandwiched as shown in FIG. 5 (a) (step S17), and FIG.
As shown in FIG. 14, the pull-out mechanism 35 again starts moving to the right side of the paper surface of FIG. 14, and the pull-out operation of the packaging sheet 1 is started (step S18).

When the pull-out mechanism 35 reaches the holding position and holds the end of the roll-shaped packaging sheet 1, the lower end of the upper portion 1a of the packaging sheet 1 on the removing plate 52 of the pull-out mechanism 35 becomes the first Since it is caught on the end of the sandwiching member 14, when the pull-out mechanism 35 moves from the sandwiching position to the right in the drawing, the removal plate 52 of the pull-out mechanism 35 is pulled away from the upper portion 1a of the packaging sheet 1 and the packaging sheet 1
The upper part 1 a of the first holding member 14 falls downward from the end of the first holding member 14.

Marks 1b are printed on the wrapping sheet 1 at predetermined intervals, and when the wrapping sheet 1 is pulled out by a predetermined length by the drawing mechanism 35, it is printed on the wrapping sheet 1 as shown in FIG. The mark 1b is also pulled out, the mark 1b is detected by the optical sensor 53, and the pullout mechanism 35 is temporarily stopped (step S1).
9) In this state, the cutting mechanism 34 cuts the packaging sheet 1 (step S20).

When the packaging sheet 1 is cut to a predetermined length as described above, the pulling-out mechanism 35 again starts moving to the right side of the paper in FIG. 14, and the packaging sheet 1 cut to a predetermined length is moved to the right side of the paper. As shown in FIG. 14, the center of the packaging sheet 1 cut into a predetermined length is the packaging table 2 as shown in FIG.
When it reaches the opening 2a, the pull-out mechanism 35 stops at this pull-out position, and the end of the packaging sheet 1 is separated from the top plate 39 and the holding arm 38 of the pull-out mechanism 35 (step S21). As a result, one packaging sheet 1 cut into a predetermined length is placed on the packaging table 2.

As described above, while the article A to be packaged is being packaged in steps S12 to S16, in parallel with this, the packaging sheet 1 for the next packaging is pulled out, cut into a predetermined length and cut. Place on the packaging table 2. As a result, when the empty support base 3 is operated to move up to the original position in step S16, it is said that the packaging sheet 1 for the next packaging has already been placed on the packaging base 2. The time required for packaging can be shortened.

[Other Embodiment] In the above-mentioned embodiment, as shown in FIGS. 1 and 4, a pair of first holding members 14 are provided on the upper side of the heater 9 and a pair of second holding members 16 are provided on the lower side. However, the upper first clamping member 14 is eliminated, and only the lower side of the heater 9 has the pair of second clamping members 16 (and the clamping arm 3).
0) may be provided.

In the above-described embodiment, as shown in FIGS. 5A and 5B, the drawing mechanism 35 and the cutting mechanism 34 for automatically drawing the packaging sheet 1 are provided. The cutting mechanism 34 is abolished, and a large number of packaging sheets 1 cut to a predetermined length are stacked and placed next to the packaging table 2, and the operator takes out the packaging sheets 1 one by one and places them on the packaging table 2. You may comprise so that it may leave. When configured in this way, FIG. 5 (a), (b)
Since the pull-out mechanism 35 for supporting the removal plate 52 as shown in FIG. 3 is eliminated, the drive mechanism is provided so as to support and drive the removal plate 52.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a perspective view showing a moving drive structure of first and second holding members, a heater, and the like.

FIG. 2 is a plan view showing a moving drive structure of first and second holding members, a holding arm, and a heater.

FIG. 3 is a plan view showing a state in which the first and second clamping members and the like are moved to a clamping position from the state shown in FIG.

FIG. 4 is a vertical cross-sectional side view showing a moving drive structure of first and second holding members, a holding arm, and a heater.

FIG. 5 is a vertical sectional side view of the packing sheet pulling mechanism and the vicinity of the packing table.

FIG. 6 is a front view of the vicinity of the support table showing a state in which the object to be packaged is pushed into the opening of the packaging table and dropped on the support table.

FIG. 7 is a front view showing a state where the pair of holding arms are closed from the state shown in FIG. 6 and the support base is lowered to the lower side of the first and second holding members.

FIG. 8 is a front view showing a state in which the first and second sandwiching members sandwich the upper part of the packaging sheet when the first and second sandwiching members and the heater are moved to the sandwiching position side.

9 is a front view showing a state where the heater sandwiches the upper portion of the packaging sheet from the state shown in FIG.

10 is a front view showing a state in which the upper portion of the packaging sheet is removed by the removal plate of the drawer mechanism after the state shown in FIG.

FIG. 11 is a front view showing a state in which the first and second holding members and the heater have been moved to the retracted position side after the state shown in FIG.

FIG. 12 is a diagram showing the flow of the first half of the entire packaging.

FIG. 13 is a diagram showing the flow of the latter half of the entire packaging.

FIG. 14 is a perspective view showing the entire packaging.

[Explanation of symbols]

 1 packaging sheet 1a upper part of packaging sheet 2 packaging table 2a opening of packaging table 3 support table 9 heaters 14 and 16 clamping members 28 and 32 first drive means, second drive means T2 set time A packaged object

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Haruo Sasaki No. 1 Satonozawa, Sanbongi, Towada City, Aomori Prefecture 259 Inside Sasaki Corporation (72) Inventor Shigeharu Koji Haruna, Sanwaki, Towada City, Aomori Prefecture No. 1 259 Inside Sasaki Corporation

Claims (2)

[Claims] 1. A packaging table (2) for mounting a packaging sheet (1), which is provided with an opening (2a) through which an article to be packaged (A) is dropped, and is provided in the opening (2a) from above. Package (A)
When the packaging sheet (1) is dropped, the packaging sheet (1) is squeezed at the outer edge of the opening (2a), and the article to be packaged (A) is packaged (1).
A pedestal (3) that supports the article (A) that has been packaged in the packaging sheet (1) and has fallen into the opening (2a) while being wrapped in the packaging sheet (1); 2) A pair of clamping members (14) and (16) for laterally clamping the upper part (1a) of the packaging sheet (1) of the article to be packaged (A) on the support base (3) on the lower side, The pair of clamping members (14),
First driving means (28) for driving the (16) to reciprocate between the sandwiching position of the packaging sheet (1) and the retracted position separated from the upper part (1a) of the packaging sheet (1),
(32) and the upper part (1a) of the packaging sheet (1) of the article to be packaged (A) on the support table (2) below the packaging table (2) are sandwiched and heated from the lateral direction. A pair of heaters (9) for welding and sealing, and a pair of heaters (9) at a sandwiching position of the packaging sheet (1) and a retracted position apart from the upper part (1a) of the packaging sheet (1). Second drive means (28), (3
2), and when the article to be packaged (A) is supported by the support base (3) while being wrapped in a packaging sheet (1), the holding member (1)
4), (16) and the heater (9) are moved from the retracted position to the sandwiching position so as to move the first and second drive means (28), (32) first control means, First and second drive means (2
After the operations of 8) and (32), the heater (9) is moved from the sandwiched position to the retracted position side, and then the sandwiching members (14) and (16) are moved from the sandwiched position to the retracted position side. And a second control means for actuating the first and second drive means (28), (32). 2. After the operation of the first and second drive means (28), (32) by the first control means, the heater (9) is moved from the sandwiched position to the retracted position side, and then the heater (9) is operated. The holding members (14), (16) are stopped at the holding position for a set time (T2), and after the set time (T2) has passed, the holding members (14), (16).
2. The packaging device according to claim 1, wherein the second control means is configured such that the second control means is operated to move from the sandwiching position to the retracted position side.