JP2955844B2 - Method for capturing mold tray and mold tray peeling apparatus using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold tray for chicken eggs which is supplied in a stacked manner without requiring any manual operation.
The present invention relates to a method for catching a convex portion formed on the upper surface of a mold tray for peeling one by one and supplying the same to a chicken egg packing step by an egg washing / sorting machine, for example, and a peeling device using the same.

[0002]

2. Description of the Related Art Mold trays are formed by using recycled paper as a material, forming a plurality of ova in a concave portion, and a plurality of convex portions on an upper surface for protecting eggs stored in the ova, and then drying. It is formed. The normal egg seat is 40 (5
× 8), 45 (5 × 9), and 54 (6 × 9) are provided, and the size of the mold tray is about 450 × 300 mm in length and width. The surface that does not touch the mold during molding is finished roughly. At the time of distribution, the mold trays are stacked on each other and banded, so that the mold trays may be in a crimped state.

Therefore, in order to supply the mold tray to the next step, it is necessary to peel off the stacked mold trays one by one. When the train trays are in a crimped state, considerable force is required, and since the mold train itself is also quite large, skill is required to peel it smoothly, and it requires cumbersome work. there were. On the other hand, a mold tray is naturally warped or distorted, and flatness cannot be expected. Therefore, it has been difficult to mechanize the peeling operation.

[0004] An automatic mold tray for chicken eggs is disclosed in Japanese Patent Application Laid-Open No. Hei 8-20436 as a machine that molds the mold tray peeling operation. But this device
Since the table lifter that moves up and down is used for replenishing the mold tray, it is necessary to interrupt the peeling operation when replenishing the mold tray. Further, the transfer arm for holding and transferring the peeled mold tray reciprocates in the horizontal direction, which is disadvantageous in terms of cycle time. In addition, there are only four exfoliated bodies that capture the outside of the mold tray, and if any of the four exfoliated bodies fails to capture the mold tray, there is a disadvantage that the exfoliation cannot be performed immediately.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to reliably and efficiently remove stacked mold trays and to supply mold trays without interrupting the peeling operation. To be able to do it.

[0006]

According to the method of capturing a mold tray of the present invention, hooks mounted opposite to a pair of parallel main shafts are separated from each other by the movement of the main shafts to separate the stacked mold trays. In a method for catching a mold tray that approaches or moves away and pierces a convex portion on the upper surface of a mold tray, the main shafts are rotated in opposite directions to move the opposing hook projections toward or away from each other.

[0007] The peeling apparatus using this method comprises a catching section for catching and opening the lowermost stage of the stacked mold trays supplied with the convex portions facing downward, and at least the next stage excluding the lowermost stage from capture to release of the mold tray. A peeling mechanism consisting of a restraining portion that holds the mold tray, and a reversing frame for attaching the capturing portion, so that the capturing portion releases the convex portion upward,
And a reversing mechanism comprising a reversing unit for reversing the reversing frame.

[0008] The catching section has a plurality of pairs of hooks mounted opposite to two parallel main shafts, and the main shafts are provided with a mold tray.
To pierce and catch the convex part of the
It is characterized in that the protrusions reciprocate to approach or move away from each other.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A mold tray peeling apparatus according to the present invention comprises a peeling mechanism and a reversing mechanism. The peeling mechanism includes a capturing section and a restraining section, and the reversing mechanism includes a reversing frame and a reversing section.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a catching unit which separates the stacked mold trays M one by one. Numeral 2 denotes opposed side plates, and bearings 3 and 4 are fixed between the side plates 2 at both ends. 5 is a pair of movable blocks,
It is fixed inside the bearings 3 and 4 so that the position can be adjusted in the longitudinal direction. By the way, Ma is the convex part of the mold tray M, Mb
Is the ova.

Reference numeral 6 denotes two parallel main shafts. Both ends of the round bar are pivotally supported by a U-shaped bearing 3 and a block-shaped bearing 4, respectively. Has been inserted. Reference numeral 7 denotes a hook portion, as shown in detail in FIGS. 3 and 4, and a plate-like hook 8 and a space for detachably fixing the hook 8.
9 The hooks 7 are attached to the main shafts 6 at equal intervals with the compression spring 10 interposed between the two movable blocks 5. The number of hooks 7 attached to one main shaft 6 is six. Of course, the number of hooks 7 attached to one main shaft 6 can be arbitrarily selected. The distance between the hooks 7 can be adjusted by moving the movable block 5 according to the size of the mold tray M.

Reference numeral 11 denotes a bevel gear. The small gear is attached to the outer end of each main shaft 6 on the bearing 3 side, and the large gear is attached to a swing shaft 12 pivotally supported by the legs of the bearing 3. A drive lever 13 is fixed to the swing shaft 12. Therefore, when the drive lever 13 is swung, the two main shafts 6 rotate in directions opposite to each other. The reverse rotation means for rotating the main shafts 6 in opposite directions is not limited to bevel gears, and any known means such as a rotary cylinder or a rack and pinion can be used.

Therefore, as shown in FIG. 5 showing the initial position of the hook 8, the projections of the opposed hooks 8 are respectively positioned inward, and when the main shaft 6 is turned in the opposite directions, the opposed hooks 8 are rotated. The gap between the protrusions is increased. And, as shown in FIG.
The protrusions of the hooks 8 pierce into the inner side of the convex portion Ma adjacent to the uppermost mold tray M, respectively.
M can be captured. It should be noted that there is a sufficient gap between the projection M'a of the next mold tray M 'and the hook 8 does not stick into the projection M'a.

Although not shown, on the contrary, at the beginning of the peeling operation, the tips of the opposing hooks 8 are positioned outward, and the main shaft 6 is rotated in the opposite direction to the above.
The mold tray M can be captured by piercing the outer side portions of the adjacent convex portions Ma. Also, two parallel main shafts 6
Can be brought closer (or farther away) to capture the mold tray M.

When a plurality of pairs of hooks 7 are attached to the parallel main shaft 6 and the main shafts 6 are rotated in opposite directions, a large number of protrusions of the hooks 8 act synchronously, so that the mold tray M is grasped. Is ensured, and the reaction generated by the trapping action is canceled.

Reference numeral 14 denotes four stays protruding from the side plate 2.
In order to mount a cam follower provided in a reversing mechanism to be described later, a vertical mounting hole 15 is provided. 1
Reference numeral 6 denotes a bolt protruding inward from the stay 14.

Such a capturing section 1 is provided with a motor as shown in FIG.
A plurality, in the case of FIG. 7, three are provided orthogonally to the longitudinal direction of the mold tray M to ensure the acquisition of the mold tray M. The mutual interval between the capturing portions 1 is adjusted according to the pitch of the convex portions Ma.

As shown in FIG. 6, in order to separate the captured uppermost mold tray M of the stacked mold trays M from the next and lower mold trays, the following steps are required.
Alternatively, it is necessary to restrain the mold tray on and after the next stage. FIG. 8 shows the restraining portion 17. Restraint part 17
Is for restraining the side edges of the mold tray M from both sides.

Reference numeral 18 denotes a hopper, and brackets 19 projecting downward are fixed to upper ends on both sides. Reference numeral 20 denotes a pair of rockers, each of which has a guide hole 21 formed in a lower portion thereof, and an upper end portion connected to the bracket 19 by a rocking link 22. 23 is a disk crank, which has a guide hole 21
And rotated by a motor (not shown).
Reference numeral 24 denotes a tension spring, and the lower end of the bracket 19 and the swinging body 20
Is connected to the upper end.

Reference numeral 25 denotes a mounting plate which is mounted on the inside of the rocking body 20 so as to be able to adjust the vertical position. A lower pressure plate 26 having elasticity, such as rubber, is provided as one of the restraining members. It is fixed. Reference numeral 27 denotes a claw plate serving as the other restrainer, which has a saw-tooth-shaped claw that is inclined inward and is attached to the lower end of the attachment plate 25 so as to be vertically adjustable. The subsequent mold tray is restrained during peeling. In addition, although only one of the pressure plate 26 and the claw plate 27 can be adopted as the restraint, it is more effective to use both of them.

As shown in FIG. 8, of the mold trays supplied from the hopper 18 with the convex portions Ma facing downward, the position where the lowermost mold tray M is captured by the group of hooks 8 of the capturing portion 1. In this case, the vertical position of the claw plate 27 is adjusted in advance so that the claw plate 27 restrains the next and subsequent mold trays (not shown). As described above, the flatness of the mold tray M cannot be expected, that is, it has warpage. However, since the oscillating body 20 is connected by the oscillating link 22, the oscillating body 20 moves up and down in accordance with the warp, and can absorb the distortion due to the warp.
The restraint of the mold tray on and after the next stage can be ensured.

When the disk crank 23 is rotated by a driving means (not shown), the interval between the opposing rockers 20 is reduced to restrain the mold tray of the next and subsequent stages, or the interval is increased to increase the mold tray. Can be opened.

Next, a reversing mechanism including a reversing frame and a reversing section will be described. First, FIGS. 9 and 10 show a reversing frame 28 of a reversing mechanism to which three capturing units 1 are attached. 29
The front and rear stays are attached to the inside of the reversing frame 28 so that the left and right positions can be adjusted. A mounting cam follower 30 for attaching the capturing body 1 to the reversing frame 28 is pivotally mounted on the left and right.

Numeral 31 denotes a cam follower for vertical movement.
Reference numeral 32 denotes a reversing cam follower, which is pivotally mounted on the right and left sides of the reversing frame 28 from the center thereof. A drive shaft 33 in the left-right direction has both ends pivotally supported by the rear end of the reversing frame 28. A drive lever 34 is fixed to the left end of the drive shaft 33, and three driven levers 35 are fixed to the right side thereof. 36 is a drive cylinder, and 37 is an interference prevention hole of the drive lever 13.

As shown in FIG. 11, the capturing portion 1 is mounted by fitting a mounting cam follower 30 into a mounting hole 15 provided in a stay 14 of the capturing portion 1 so as to be vertically movable.
Then, as shown in FIG. 12, the bolt 16 fixed to the stay 14 and the shaft of the mounting cam follower 30 are connected by a tension spring 38.

In FIG. 11, reference numeral 39 denotes a driving cylinder 36.
A driving rod connecting the driving lever and the driving lever, and a driven lot connecting the driven lever 35 and the driving lever. Then, when the drive cylinder 36 is operated, the drive rod 34 is swung by the drive rod 39 and the drive shaft 3 is driven.
The driven lever 35 fixed to 3 swings. Driven lever
With the swing of 35, the drive lever 13 is driven via the driven rod 40.
Swings, and the pair of opposing main shafts 6 rotate in directions opposite to each other.

As described above, since the bolt 16 fixed to the stay 14 and the shaft of the mounting cam follower 30 are connected by the tension spring 38, the capturing portion 1 is so-called as a flow with respect to the reversing frame 28. In the state of Therefore, when the vertical position of the hook 7 changes due to the warp of the mold tray M,
Even if the drive lever 13 moves up and down, the influence of the driven lever 35, the driven rod 40, and the drive lever 13 on the link motion can be ignored.

Here, in order to solve the disadvantage of the mold tray replenishment by the above-mentioned table lifter and to enable the replenishment at all times, it is premised that the mold tray is naturally dropped and replenished from above. However, considering that it is effective to catch the protrusions on the upper surface of the mold tray, the upper surface of the mold tray must be downward, that is, the protrusions must be downward.
Then, it is necessary to invert the downward mold tray after peeling to make it usable.

Therefore, in the present invention, the space of the inversion,
That is, in order to make the size of the apparatus as small as possible, the mold tray is supplied at an oblique angle of 45 ° with the convex portion facing downward.

FIG. 13 shows the progress from the supply of the mold tray M to the completion of the peeling. The mold tray M supplied at an oblique angle of 45 ° is captured at the position A by the group of hooks 7 and the non-illustrated restraining portion. Captured mold tray M
In order to make the reversal space small, it is rotated 90 ° while being lifted and flipped, and it is released from the position of B and naturally dropped, and a plate placed horizontally at the position of C, etc. It is horizontal on the receiving and discharging means (not shown). Needless to say, the supply angle and the reversal angle of the mold tray M are not limited to the above angles and can be arbitrarily selected.

FIGS. 13 to 16 show an inverting section 41 for inverting the mold tray M. FIG. Reference numeral 42 denotes an opposing side plate. A hopper 18 that moves up and down at an oblique angle of 45 ° is mounted on an upper portion of the upper portion by a hopper cylinder 43. 44 is a vertical slit, 45 is a horizontal slit, the vertical slit 44 is provided in the upper part of the side plate 42 which opposes, and the horizontal slit 45 is provided in the center part. The vertical slit 44 has a cam follower 31 for vertically moving the reversing frame 28, and the horizontal slit 45 has
The reversing cam followers 32 are movably fitted respectively. The horizontal slit 45 is formed slightly higher at the center so that the upright reversing frame 28 is easily inverted.

Reference numeral 46 denotes a reversing cylinder fixed to the side plate 42. The rod end of the reversing cylinder 46 is pivotally connected to the shaft of the vertical cam follower 31. Reference numeral 47 denotes a direction control plate, which is driven by a direction control plate cylinder 48 and comes into contact with the reversing cam follower 32 to change the direction of the reversing frame 28.

Reference numeral 49 denotes a pair of opening / closing standby plates, which open after receiving the mold tray released and released,
Drop it onto a supply conveyor (not shown).

The driving cylinder 36, hopper cylinder 43, reversing cylinder 46, direction control plate cylinder 4
Although an air cylinder is used for 8, known driving means such as a hydraulic cylinder, a cam device, and a crank device can be used instead of the air cylinder.

The operation of the peeling device will be described with reference to FIG. 15. When the reversing frame 28 is at the position A, that is, when the mold tray M is in the standby position, the hopper 18 is lowered. During the descent, the restraining portion 17 releases the mold tray M, and applies the protrusion Ma of the lowermost mold tray M to the hook 8 by the weight of the stacked mold tray. Mo again
When the traction tray M is restrained and the hopper 18 is lowered until it stops, the hook 7 is moved in accordance with the warp of the molding tray M.
And the position of the pressure plate 26 can be balanced.

The hook 8 is operated to insert the projection Ma. When the hopper 18 is raised, the peeling is completed. The reversing cylinder is operated to raise the reversing frame 28, and when the reversing frame 28 stands upright, the direction of the direction control plate 47 is changed to lower the reversing frame 28. When the reversing frame 28 reaches the position B, the hook 8 is released and the mold tray M is released. The mold tray M falls freely and becomes horizontal on the standby plate 49. Mold training
The standby plate 49 is opened by the request signal, and the mold tray M is discharged onto the supply conveyor. After the release, the reversing frame 28 returns to the position A to complete one cycle.

[0037]

According to the present invention, by supplying the mold tray obliquely, the mold tray can be replenished without interrupting the peeling operation, so that the peeling operation and the successive egg packing operation can be efficiently performed. I can do it.

[0038] Compared with the conventional apparatus, since much more convex portions are captured, there is no failure in peeling of the mold tray.

Since the catching portion and the restraining portion can absorb the warp of the mold tray, the peeling can be performed accurately.

[Brief description of the drawings]

FIG. 1 is a side view of a capturing unit.

FIG. 2 is a plan view of a capturing unit.

FIG. 3 is a front view of a hook.

FIG. 4 is a perspective view showing an assembled state of a hook.

FIG. 5 is an explanatory view of a hook trying to catch a convex portion of a mold tray.

FIG. 6 is an explanatory view showing a state in which a hook has caught a convex portion of a mold tray.

FIG. 7 is a plan view showing an arrangement of three capturing units for capturing one mold tray.

FIG. 8 is a front view of a restraining portion.

FIG. 9 is a plan view of a reversing frame.

FIG. 10 is a side view of the reversing frame.

FIG. 11 is a side view of a state in which a capturing unit is attached to a reversing frame.

FIG. 12 is a schematic front view showing a state in which a cam follower for mounting a reversing frame is fitted into a stay of a capturing unit.

FIG. 13 is an explanatory view showing the movement of the reversing frame until the capturing unit captures and releases the mold tray.

FIG. 14 is a side view of a peeling device.

FIG. 15 is an internal side view of the peeling device.

FIG. 16 is a schematic internal front view of a peeling device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Capture part 6 Main shaft 7 Hook part 8 Hook 13 Drive lever 14 Stay 17 Restraining part 18 Hopper 26 Pressure plate 27 Claw plate 28 Reversing frame 30 Mounting cam follower 31 Vertical movement cam follower 32 Reversing cam follower 41 Reversing part 44 Vertical slit 45 Horizontal slit 47 Direction control plate

Claims (6)

(57) [Claims] 1. In order to separate stacked mold trays, hook projections attached to a pair of parallel main shafts are moved closer to or away from each other by the movement of the main shafts, and pierce the protrusions on the upper surface of the mold tray. A method for catching a mold tray, comprising: rotating the main shafts in opposite directions to each other so as to move the opposite hook projections closer or farther away. 2. A capturing section for capturing and opening a lowermost step of a stacked mold tray supplied with a convex portion downward, and a restraining section for holding at least a next-stage mold tray excluding the lowermost step from capturing to discharging of the mold tray. And a reversing mechanism comprising a reversing mechanism for reversing the reversing frame, the reversing frame for attaching the capturing unit, and the reversing frame for reversing the reversing frame, so that the capturing unit emits with the convex portion facing upward. It has a plurality of pairs of hooks attached opposite to the two main shafts, and the main shafts reciprocate to move the protrusions of the mold tray closer to or away from each other because the protrusions of the mold hooks pierce and catch the protrusions. Mold tray peeling device. 3. The mold tray peeling device according to claim 2, wherein the main shaft is rotated in opposite directions to bring the opposing protrusions close to each other so that the hook catches the convex portion of the mold tray. 4. The mold tray peeling device according to claim 2, wherein the catching portion is attached to the reversing frame in a floating state in order to absorb the warpage of the mold tray. 5. The mold tray peeling device according to claim 3, wherein the restraining portion is movably mounted to absorb the warpage of the mold tray. 6. The mold tray peeling apparatus according to claim 3, wherein the hopper provided on the restraining portion and accommodating the stacked mold trays is inclined so as to be able to supply the mold trays obliquely.