JPH04142207A - Wrapping device - Google Patents

Abstract

PURPOSE:To increase working efficiency with simple improvement applied to the structure of the title device by a method wherein a member supporting a placed object to be wrapped is made to double as a release mechanism. CONSTITUTION:An object C to be wrapped is supported over a supplied wrapping sheet 1, and a first wrapping apparatus 17a and a second wrapping apparatus 17b bend side edges of the sheet. A third wrapping apparatus 17c folds one side edge of the sheet and stops at a specified position around the center over the object C, while the second wrapping apparatus 17b works for holding down the sheet, and a pressing arm 26 works for pressing operation. Then the second wrapping apparatus 17b separates from the object C, and after a little while, the third wrapping apparatus 17c and the second wrapping apparatus 17b start to retreat to the positions where the apparatuses do not operate while a pressing device 7 maintains the pressing. A fourth wrapping apparatus 17d guides the wrapping sheet and, at the same time, an adhesive tape 5 is stuck for wrapping. After this, a release mechanism which interlocks with an operation releasing the pressing device is shifted to the position of release operation, and thereby the wrapped object is automatically released.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for packaging objects to be packaged, such as lettuce and other spherical vegetables, with a packaging sheet.

[Conventional technology]

Conventionally, in the above-mentioned packaging device, packaging sheets are sequentially
After the sheets are automatically supplied to the work section, the objects to be packaged are placed manually from above, the wrapping sheet is automatically wrapped, and then the objects to be packaged according to the packaging method are manually collected from the work section. A structure configured to do so has been considered (see, for example, Japanese Patent Application No. 2-40391 filed by the present applicant).

[Invention or problem to be solved]

The conventional structure described above aims to improve work efficiency by automating as much as possible of this type of work that was previously done manually.

However, the placement of the packaged items and the recovery work after packaging must be performed manually, and there is room for improvement in this respect.

An object of the present invention is to provide a packaging device that can improve work efficiency through simple structural improvements.

[Means to solve the problem]

The characteristic configuration of the present invention includes a plurality of wrapping tools for covering and guiding the packaging sheet onto an object to be packaged, which is placed from above the packaging sheet supplied from the sheet storage section to the working section; A presser device is provided that presses and supports the object to be packaged downward as the wrapping operation of the ingredients is completed, and releases the presser operation when the wrapping operation is completed, and the A packaged object release mechanism is provided which can be switched between a loading position for receiving and placing the packaged object and a releasing position for releasing the packaged object laterally and outwardly of the working section. be.

[Function] After the packaging sheet is supplied from the sheet storage section to the working section, the object to be packaged is placed from above the packaging sheet.

At this time, the object to be packaged is received and supported by the release mechanism in the loading position.

Then, each wrapping tool guides the wrapping sheet over the object to be wrapped, and the wrapping operation is performed.Along with this, the holding device presses and supports the object to prevent the object from lifting up during the wrapping operation. To prevent the occurrence of loosening of the side edge of the sheet that has already been covered.

Further, after the wrapping operation is completed, the release mechanism is switched to the release action position, and the packaged item is automatically released laterally and outwardly.

At this time, if the release operation is linked to the release operation of the presser device, there will be no wasted time during work.
Moreover, a drive system dedicated to the ejection operation is not required.

〔Effect of the invention〕

Therefore, according to the present invention, in order to wrap and guide the packaged object placed on the packaging sheet, it is necessary to arrange each wrapping device in parallel on the lower side of the packaging sheet, which results in unnecessary By making a simple structural improvement in which the member for placing and supporting the packaged items is also used as the release mechanism, in addition to the packaging work, it is also possible to automatically take out and release the work from the work section, improving work efficiency. We were able to improve this.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Figures 1O and 11 show items to be packaged, such as lettuce (C
) is shown for packaging with a packaging sheet (1). This packaging device has a storage section (A) that stores a large number of packaging sheets (1) in a stacked manner, and a packaging sheet (1) that is transferred and supplied one by one from the storage section (A) to a packaged object (C).
It consists of a packaging section (B) that wraps the
A sheet feeding device (2) for transporting and feeding packaging sheets (1) one by one from above, and holding the packaged object (C) placed from above the supplied packaging sheet (1) from below. a holding mechanism (3) that wraps and guides each end of the packaging sheet (1) over the held object (C), a wrapping mechanism (4) that wraps and guides the held object (C); (1
) and a tape feeding device (6) for feeding and feeding the adhesive tape (5) for adhering and fixing the material (C), and a presser device (7) for preventing the object to be packaged (C) from rising during the wrapping operation. ) etc. are provided.

As shown in FIG. 4, the holding mechanism (3) includes a receiving stand (8) that receives and supports the object to be packaged (C), and also swings up and down to hold the object to be packaged (C). It is equipped with a pair of left and right holding arms (9) that hold the
, (9) are configured to be swing-driven between a downward retracting position and an upward swinging working position by an electric motor (lO) which can be rotated forward and backward. In other words, the electric motor (10
) The lifting member (14), which is slid up and down with respect to the support shaft (13) via the balance swinging arm (12) by the arm (11) that rotates integrally with the holding arm (9),
Swing drive is performed in conjunction with (9). The electric motor (10) also connects a presser roller (15) to a link mechanism (16) for pressing and tensioning one end of the packaging sheet (1).
It is configured to be driven in conjunction with each other.

As shown in FIGS. 2, 3, and 10, the wrapping mechanism (4) wraps each end of the packaging sheet (1) around the packaged object (C) held by the holding mechanism (3) Four wrapping tools (17a), (17b), which fold and guide and hold the
(17c), (17d), and each wrapping tool is equipped with a forward/reverse electric motor (18a), (18b), (18c).
, (18d), the packaging sheet (1) is sequentially folded and guided along the surface of the object (C) to be packaged. Each enclosing device has a first support arm (20) pivotally supported at the tip of a drive arm (19) that is oscillated within a certain range by each electric motor.
A second support arm (21) is pivotally supported at one end of the second support arm (20), and a guide roller (22) is mounted at the tip of the second support arm (21).
), each of the support arms (20);
(21) is a rotational biasing member in the direction of holding down the packaged object. or,
A cam roller (2
3), and this cam roller (23) is guided by the cam surface (24) as the drive arm (19) rotates, and each guide roller (22) or almost the surface of the packaged object (C) It is configured to be guided and driven along. In addition, in the figure (SW
) is a limit switch for timing control of each electric motor.

The guide roller (
22) is divided into left and right halves, and between them is provided a blow nozzle (25) that bends and guides the sheet end side, which guides the roller (22), toward the packaged object (C). This blow nozzle (25) is connected to the first wrapping tool (17a
), air is blown along with the wrapping operation of the second wrapping tool (
17b) is designed to stop blowing air after it operates to an intermediate position.

The presser device (7) is configured such that a presser arm (26) elastically biased downward moves vertically and horizontally by driving an electric motor (27), and the presser arm (26) is elastically biased downward and moves vertically and horizontally, and the presser arm (26) is moved vertically and horizontally by driving an electric motor (27). It is configured to hold down the object (C). Specifically, as shown in FIGS. 6 and 7, the presser device (7) is provided on the rear side of the second wrapper <17b>,
A lateral moving part (29) is supported so as to be slidable in the direction toward the center of the working part with respect to a support frame (28) erected from the machine base, and a horizontal moving part (29) is supported vertically so as to be freely movable up and down with respect to this lateral moving part (29). Supports the moving part (30), and this vertical moving part (3
0), the presser arm (26) is attached. The lateral movement part (29) is a drive bin (31) rotationally driven by an electric motor (27) or a vertical engagement opening part (32).
The vertical moving part (30) is driven to move laterally by abutting on the
The driving pin (31) is driven by being brought into contact with the locking part (33). A guide hole (3) connected to the engagement recess (32)
4) The drive bin (
31). The presser device (7) configured as described above has a first step in which the presser arm (26) moves laterally from a standby position in the rear and upper part to above the object to be packaged (C), and then moves downward to move the object to be packaged (C) laterally. C) A second step of pressing down, a third step of moving backward and retracting, and a fourth step of moving upward toward the standby position are sequentially repeated.

Next, the sheet feeding device (2) will be explained.

As shown in FIGS. 10 and 11, guide rails (35), (35) and an endless rotating chain (36) are installed on both left and right sides of the storage section (A) and packaging section (B), respectively.
, (36), and both guide rails (
35), guided by (35), rotating chain (
36), is equipped with an adsorption transfer mechanism (37) that slides when driven by (36). Adsorption transfer mechanism (37)
is a pair of supporting members (38), (38) movably connected to each rotary chain (36), (36), at a horizontal position approximately on the same level as the sprocket axis of the rotary chain (36). A U-shaped arm (39) that can freely swing around the axis (Pl) is constructed and connected, and suction nozzles (39) for suctioning the packaging sheet (1) are installed at two intermediate positions of this arm (39).
40), (40) is provided. Each of the rotating chains (36), (36) is configured to be driven in the forward and reverse directions by the drive of the forward and reverse electric motor (41), and the suction and transfer mechanism (
39) to detect the amount of movement of the potentiometer ('
PM). Further, at the rotation fulcrum of the arm (39), there is a forward/reverse electric motor (
42), and is configured so that the suction nozzle (40) can be switched and swung between a position where it retracts upward and a position where it suctions the packaging sheet (1) to be stored when driven by the electric motor (42). It is.

Furthermore, the storage section (A) has three storage devices (43) each for storing three types of packaging sheets (1) of different sizes in a stacked manner.
are placed one on top of the other in an inclined position and with their front ends at approximately the same height.

As shown in FIG. 8, the suction nozzle (40) is supported by a support bracket (44) attached to the arm (39) so as to be elastically retractable, and is connected to a suction device (not shown) via a suction pipe (45). is connected to.

At the upper center of the holding mechanism (3), a saucer (50) having a cross shape in plan view (an example of a C release mechanism) is provided, and this saucer (50) is an example of a C release mechanism.
0) is the horizontal axis center (P2) at the lower position on the downstream side in the sheet feeding direction.
), it is configured to be able to freely switch and swing between a support position in which the packaged object (C) is received and supported, and a release position in which it swings outward and upward.

That is, as shown in FIG. 1, the L-shaped arm (51) integrally connected to the saucer (50) is pivotally supported on the frame (52), and the middle part of the arm (51) and the presser device (
The drive arm (53) provided in 7) is interlocked and connected via a wire (54). The drive arm (53) is
The movement of the drive pin (31) in the fourth step of the presser device (7) causes the receiving tray (50) to swing into contact and quickly switch from the supporting position to the releasing position, thereby removing the packaged items ( C) is configured to emit outward. Note that the outer end of the saucer (50) is located between the above-mentioned wrapping tools and is bent upward, so that the outer end of the tray (50) is bent upward.
1) It is designed to control the bulge of the corners.

Next, the installation structure of the tape feeding device (6) will be explained. The tape feeding device (6) is configured to feed out a predetermined amount of the adhesive tape (5) for packaging for each packaging operation as described above.

It is disposed on the outer side of the wrapping device (17d) that operates fourth, and extends toward the center of the working section (B), that is, toward the place where the article to be packaged (C) is placed. It is installed so that its position can be adjusted freely along the line. More specifically, as shown in FIG. 5, four rollers (
57) is attached and supported so as to be slidable, and an operating lever (59) which can be elastically deformed in the direction of movement is engaged with a locking tool (58) connected from a fixed frame (55) for positioning. It is composed. The locking tool (5
8) has three engaging recesses (60a), (60b), (
60C), and are set so that the position of the feeding tape (5) can be switched depending on the packaging sheet (1) of three different sizes.

Further, in conjunction with the above-mentioned position adjustment of the tape feeding device (6), the suction starting end position of the sheet feeding device (2) is changed and adjusted, and the left and right spacing between the left and right suction nozzles (40), (40) is changed. It is. To explain in detail, the engagement recesses (60a), (6Qc) on both end sides of the locking tool (58)
) are provided with limit switches (61a) and (61b) for detecting the presence of the operating lever (59), and a control device (not shown) controls the seat control based on the signals from each switch (61a) and (61b). The supply drive motor (41) of the supply device (2) is controlled to change the suction start position. In other words, if the limit switch (61a) on the center side is in the detection state, it is determined to be the small side seat position, and if the limit switch (61b) on the opposite side is in the detection state, it is determined to be the large side seat position. If it is not detected, it is determined that the seat is in the middle seat position.

Further, each of the suction nozzles (40), (40) has a support shaft (
62), and is supported so as to be slidable in the horizontal direction.
Balance arm (63) and each rod (64), (64)
It is linked so that the slides are linked in a contradictory manner. The balance arm (63) is interlocked and connected to the tape feeding device (6) via a wire (65).
Corresponding to the position of (6), left and right suction nozzles (40), (4)
0) is configured to slide.

A tape support (66) for placing and supporting the adhesive tape (5) is placed below the tape feeding portion of the tape feeding device (6).
), this tape support (66) is provided with a support arm (
A roller (68) is attached to the tip of the roller (67) so as to be able to swing up and down and be biased downward.
However, the plate-shaped guide member (69) on the tape feeding device (6) side
) It is configured to be positioned by engaging with the hook portion (69a) at the lower end.

As shown in FIG. 9, the roller (68) is formed to have a smaller diameter on the central side in the axial direction, and is connected to the guide member (68).
9), positioning in the left and right directions can also be performed. The tape support (66) also includes a tape holding member (70) that can be freely switched between a state in which the adhesive tape (5) and the packaging sheet (1) are held together and supported under pressure, and a state in which the pressure is released. ) is provided in a supporting position in a spring-biased state and in a manner capable of being driven and released by the electric motor (1O) (see FIG. 4).

As explained above, the packaging device is provided with a tape feeding device (6) whose position can be freely adjusted according to the size of the packaging sheet (1), so that the amount of tape feeding can be adjusted regardless of the size of the sheet. It is possible to supply it in an appropriate state while keeping it constant at all times.

Next, the operating procedure of the wrapping mechanism (4) and the holding device (7) will be explained.

While the object to be packaged (C) placed from above the supplied packaging sheet (1) is held by the holding mechanism (3), first, the first wrapping tool (17a) bends and guides the side edges of the sheet. Then, the second wrapper (17b) located at the opposing position bends and guides the sheet side edge. This second wrapping tool (1
7b) In the sheet pressing posture, the third wrapper (17c) located on the right side folds and guides the sheet side edge. At this time, the driving stroke is set so that the third wrapping tool (1, 7c) always stops at a predetermined central position above the object to be wrapped (C).

Then, from a point in time when the third enclosing tool (17c) is in the middle of the guiding operation, the presser foot lowering operation of the presser device (7) is started, that is, the second
Set the timing to move on to the process. Note that the presser arm (26) is formed in a fork shape, and operates as a presser while straddling the guide roller (22) of the third wrapper.

Next, at the same time as the third wrapping tool (17c) reaches the predetermined location, the second wrapping tool (17b) moves to its guide roller (2).
2) From the sheet holding position, the sheet protrudes further outward and is separated from the packaged object (C). Moreover, when the separation operation is completed, the third wrapping tool (17c) begins to retire to the non-working position almost at the same time, and then, after a slight time difference, the second wrapping tool (17b) starts to retire to the non-working position. and begins to retire.

At this time, the presser device (7) maintains the presser action, so
The presser arm (26) is formed into a U-shape in plan view, and the second
It is constructed so as not to impede the retraction operation of the wrapper (17b). Thereafter, after the fourth packaging tool (17d) performs the sheet guiding action and the packaging is pasted using the adhesive tape (5), the presser device (7) moves to the third and fourth steps.
As described above, the packaged object (C) is released and the packaging operation is completed.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the packaging device according to the present invention, in which FIG. 1 shows the drive system of the release mechanism, FIGS. 2 and 3 are side views of the wrapping mechanism, and FIG. 4 shows the drive of the holding mechanism. Diagram showing the system, No. 5
The figure is an exploded perspective view of the tape feeding device installation part, FIG. 6 is a side view of the presser device, FIG. 7 is an exploded perspective view of the presser device, and FIG.
9 is a perspective view of the tape support, FIG. 1O is an overall plan view, and FIG. 11 is an overall side view. (1)... Packaging sheet, (7)...
Presser device, (17a), (17b), (17c),
(17d) --- Wrapping tool, (50)...
・Release mechanism, (A)... Storage section, (B)...
... Working part, (C) ... Item to be packaged.

Claims (1)

[Claims] 1. An object to be packaged (C) placed from above the packaging sheet (1) supplied from the sheet storage section (A) to the working section (B).
, a plurality of wrapping tools (17a), (17b), (17c), (17
d) and each wrapping tool (17a), (17b), (17c
), (17d), the object to be packaged (C
) is provided with a presser device (7) that presses and supports the object (C ) and a releasing position that releases the packaged object (C) to the lateral outside of the working section (B). ) packaging equipment. 2. The packaging device according to claim 1, wherein the release mechanism (50) is switched to the release action position in conjunction with the release operation of the presser device (7).