JPH1067421A - Constant pitch feed transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constant pitch feed transfer device capable of reducing frictional wear of a contact area between a pallet and transfer means. SOLUTION: A transfer device for transfer pallets 1 at a constant pitch comprises; projecting shafts 11 projecting from both sides of the pallet 1, idle running rings 2 disposed on the base end sides of the projecting shafts 11 for idly running about the projecting shafts 11, a dividing disk 2 in which, in its circumference 32, engagement recesses 31 for the rings 2 to fit in as they continue to running idly is provided with a smaller prescribed pitch than the fixed pitch and which divides the pallet 1 from free pitch to prescribed pitch as the disk 3 rotates about a shaft 36 as center, an interlocked disk 4 for interlocked rotation with the dividing disk 3 so that recesses 41 formed with a fixed pitch on the circumference 32 engage with the projecting shafts 11 of the divided pallets 1 in sequence, and transfer means 5 which transfers the pallets 1 by coaxially rotating with the interlocked disk 4 while arranged sequentially so that receiving members 51 for receiving the projecting shafts 11 is positioned at the same pitch as that of the recess 41 and at the same position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant pitch feed transfer apparatus for transferring a pallet sent at a free pitch at a constant pitch.

[0002]

2. Description of the Related Art Conventionally, as this kind of constant-pitch feed transfer apparatus, there is one having a configuration shown in FIGS. In this device, a groove A1 is provided on both sides of a pallet A, and a concave portion A3 is provided on a bottom portion A2. On the other hand, a pin B1 having a spring is provided at a constant pitch on a chain B as a transfer means so as to press a bottom portion A2 of the groove A1, and a guide rail C moves the pin B1 in a direction perpendicular to the transfer direction. It is provided as follows.

A pin B1 travels on both sides of the pallet A while abutting against a bottom A2 of the groove A1 to form a recess A3 in the groove A1.
, Is pressed by the spring and the recess A
3 is fitted. In this state, the chain B transfers the pallet A, that is, the pallet A is transferred from a free pitch to a constant pitch, and the cucumbers stacked on one surface of the pallet A are transferred and inspected by an image processing device or the like. . When the vehicle further travels, the guide rail C bends, and the pin B1 moves in a direction perpendicular to the transfer direction, comes off the concave portion A3, and stops the transfer.

[0004]

In the conventional constant-pitch feed transfer apparatus described above, the pin B1 provided on the chain B
Fits into the recess A3 of the pallet A, and in this state, the chain B
Travels, and the pallet A can be transferred from the free pitch to the constant pitch.

However, since the pin B1 travels in a state in which the pin B1 abuts against the bottom A2 of the groove A1 of the pallet A and is constantly pressed, the pin B1 and the groove A1 of the pallet A are greatly worn. The life of A was short, and the frequency of replacement had to be increased. Further, due to the wear of the pin B1, the pin B1 is moved to the concave A3 on one side of the pallet A.
In some cases, a transfer trouble may occur, in which transfer from a predetermined pitch to a constant pitch is not possible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a constant pitch feed transfer apparatus which can reduce abrasion of a contact portion between a pallet and a transfer means.

[0007]

According to a first aspect of the present invention, there is provided a transfer apparatus for transferring a pallet sent at a free pitch at a constant pitch from both sides of the pallet. A protruding protruding shaft, an idling ring provided on a base end side of the protruding shaft and idling around the protruding shaft, and a fitting groove in which the idling ring is fitted while idling at a predetermined pitch less than a predetermined pitch. A divided disk that is provided on the peripheral part and moves the pallet from a free pitch to a predetermined pitch by rotating about a central axis to divide the pallet, and a pallet with a concave part provided at a constant pitch on the peripheral part An interlocking disk that rotates in conjunction with the divided disk so as to sequentially engage with the shaft, and a receiving portion that receives the protruding shaft is sequentially arranged side by side at the same pitch and the same position as the recess, and rotates coaxially with the interlocking disk. Palle It is the configuration and a transfer means for transferring.

According to a second aspect of the present invention, in the first aspect, the fitting groove of the divided disk has a structure in which a round portion is provided on the interlocking disk side so that the pallet moves at a constant acceleration. is there.

According to a third aspect of the present invention, in the first aspect, the fitting groove of the divided disk is formed so that the width of a plane orthogonal to the central axis becomes wider toward the opposite side of the central axis. It has a configuration.

According to a fourth aspect of the present invention, in the first aspect, the divided disk is made of a synthetic resin having a lower hardness than the idle ring.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a pallet, which is formed in a substantially rectangular parallelepiped shape by metal or resin, and has two projecting shafts 11 composed of a first projecting shaft 11a and a second projecting shaft 11b projecting from both sides. Cucumbers are stacked on one surface and fed at a free pitch by the pallet feed conveyor 12, so that the first pallet 1a is juxtaposed with the subsequent second pallet 1b without any gap.

Numeral 2 denotes an idling ring, which is formed of a hardened metal having a high hardness into a cylindrical shape.
a and the second idle ring 2b, each of which is the first
The protruding shaft 11a and the second protruding shaft 11b are inserted through the base end side, and idle around the first protruding shaft 11a and the second protruding shaft 11b.

Reference numeral 3 denotes a divided disk, which is formed of a synthetic resin having a lower hardness than the idling ring 2 and is formed in a circular shape. Three parts are provided in the part 32, and the first idling ring 2a is fitted while idling. Further, the circumferential portions 32 between the fitting grooves 31 are so arranged that the three concave portions 33 are engaged with the second idling ring 2b.
Is recessed. Then, the pallet 1 is moved and divided from a free pitch to a predetermined pitch by rotating the pallet 1 clockwise around a central axis 36 connected to the drive shaft 34 via a chain 35.

Here, the radius portion 31a is moved toward the later-described interlocking disc 4 of the fitting groove 31 such that the pallet 1 moves at a predetermined pitch and at a constant acceleration, that is, at a low speed and gradually at a high speed. It is provided and comes into contact with the first idle ring 2a at the beginning of the division. Further, the width of the fitting groove 31 in a plane orthogonal to the central axis 36 is formed wider toward the opposite side of the central axis 36.

The predetermined pitch of the fitting grooves 31 is the length of an arc between the fitting grooves 31 having a radius from the center of the center shaft 36 to the center position of the fitted first idler ring 2a. , The constant pitch which is the transfer pitch between the pallets 1, that is, the distance between the centers of the first idling rings 2a between the pallets 1 is set to be smaller than the constant pitch.

Reference numeral 4 denotes an interlocking disk, which is formed of metal in a circular shape, and four recesses 41 are provided on a circumferential portion 42 at a constant pitch by dividing the entire circumference into four at 90 degrees. Another central shaft 43 is fixed to the first gear 44, and the first gear 44 meshes with the second gear 45 fixed to the drive shaft 34, so that the chain 35, the second gear 45, and the first gear 44 are connected. The first projecting shaft 1 of the pallet 1 into which the recess 41 is divided
1a, that is, the divided disk 3 rotates clockwise around another central axis 43 in conjunction with the divided disk 3 so that the divided disk 3 rotates 120 degrees while rotating 90 degrees.

Here, the constant pitch of the recesses 41 is the length of an arc between the recesses 41 having a radius from the center of another center shaft 43 to the center position of the engaged first projecting shaft 11a. hand,
The pitch is set to be longer than the juxtaposed pitch between the pallets 11, that is, the distance between the centers of the first protruding shafts 11a when the pallets 11 are juxtaposed without gaps.

Reference numeral 5 denotes a transfer means which is formed by a resin transfer belt and has a receiving portion 51 formed by cutting out a protruding portion protruding from one surface so that the receiving portion 51 has the same pitch as the constant pitch of the concave portion 41 of the interlocking disk 4. And are arranged side by side so as to be located at the same position as the recess 41. The pallet 1 is transferred coaxially with the interlocking disk 4 about another central shaft 43 by receiving the first protruding shaft 11a.

The operation of the above will be described. The first pallet 1a immediately before the transfer is arranged in parallel with the subsequent second pallet 1b without a gap, and a pressing force, so-called line pressure, is applied in the feed direction. The first idling ring 2a of the first pallet 1a comes into contact with the round portion 31a of the fitting groove 31 of the divided disk 3 and fits into the fitting groove 31 while rotating idly. At this time,
Since the round portion 31 a is provided on the interlocking disc 4 side of the fitting groove 31, the first pallet 1 a abuts on the first idling ring 2 a with line pressure, and the first pallet 1 a gradually and slowly at first with the rotation of the divided disc 3. To move at high speed. Then
The second idling ring 2b engages with the concave portion 33 of the divided disk 3 to move the first pallet 1a in the feed direction. Similarly,
With the rotation of the division disk 3, the first idling ring 2a of the second pallet 1b is fitted in the fitting groove 31, and this operation is repeated, and the pallet 1 is divided from the free pitch to a predetermined pitch.

Next, since the interlocking disk 4 rotates in conjunction with the divided disk 3, the first protruding shaft 11a of the first pallet 1a is rotated.
Is moved to a predetermined position, the recess 41 of the interlocking disk 4 engages with the first protruding shaft 11a, and fits into the receiving portion 51 provided on the transfer belt that rotates coaxially with the interlocking disk 4, thereby receiving the receiving portion. 51 receives the first protruding shaft 11a. Then
The second protruding shaft 11b is mounted on the transfer belt to prevent the rotation of the first pallet 1a, and in this state, the first pallet 1a
Is transported by the transport belt.

Here, the fitting grooves 31 of the divided disk 3 are provided on the circumferential portion 32 at a predetermined pitch less than the fixed pitch which is the transfer pitch, that is, at a pitch shorter than the fixed pitch. The first protruding shaft 11a of the second pallet 1b is securely engaged with the recess 41 of the interlocking disk 4. Transport means 5
Are arranged in parallel so that the receiving portions 51 are located at the same pitch and the same position as the recesses 41, and rotate coaxially with the interlocking disk 4, so that the receiving portion 51 reliably receives the first projecting shaft 11a. Become. This operation is sequentially repeated, and the receiving portion 51 that does not receive the first protruding shaft 11a of the pallet 1 does not occur, and all the receiving portions 51 receive the first protruding shaft 11a without forming a so-called toothless state. In this state, the pallet 1 is transferred from the free pitch to the constant pitch.

In such a constant pitch feed transfer apparatus,
As described above, since the fitting grooves 31 of the divided disk 3 are provided on the circumferential portion 32 at a predetermined pitch less than the fixed pitch, the first idle ring 2 of the first pallet 1a sent at a free pitch is provided.
The first pallet 1a moves and is divided at a predetermined pitch by rotating the divided disk 3 about the central axis 36, and the circumference of the interlocking disk 4 is rotated. The recesses 41 provided at a constant pitch in the portion 42 engage the first protruding shaft 11a, and the receiving portion 51 of the transfer means 5 receives the first protruding shaft 11a to transfer the pallet 1 and sequentially performs this operation. Is repeated, the pallet 1 can be reliably transferred from the predetermined pitch to the constant pitch while reducing the wear of the contact portion between the pallet 1 and the transfer means 5.

Further, when the pallet 1 is loaded with a line pressure, the fitting groove 31 absorbs the line pressure and the pallet 1 can be smoothly transferred from a predetermined pitch to a constant pitch.

Further, the round portion 31a is provided on the circumferential portion 32 on the interlocking disk 4 side in the fitting groove 31 so that the pallet 1 moves from the free pitch to the predetermined pitch at a constant acceleration. The first idle ring 2a of the pallet 1 comes into contact with the round portion 31a, and the pallet 1 initially moves at a low speed and gradually at a high speed, that is, at a constant acceleration, to drop the transfer material mounted on the pallet 1. Without dividing, the pallet 1 can be divided into a predetermined pitch.

Further, since the width of the fitting groove 31 of the divided disk 3 is increased toward the opposite side of the center axis 36, each of the first projecting axes 11a projecting from both sides of the pallet 1 is orthogonal to the feeding direction. Even if it is displaced from the direction, when the first idling ring 2a of the pallet 1 is fitted in the fitting groove 31, the displacement is corrected, and the first projecting shafts 11a on both sides are securely fitted in the fitting groove 31. be able to.

Further, since the divided disk 3 is made of a synthetic resin having a lower hardness than the idle ring 2, noise generated when the idle ring 2 of the pallet 1 is fitted into the fitting groove 31 can be reduced. it can.

In the present embodiment, the round portion 31a is provided in the fitting groove 31 of the divided disk 3 so that the pallet 1 moves at a constant acceleration. However, when the load is fixed to the pallet 1 and does not drop, for example, It does not have to be provided and is not limited.

In this embodiment, the first protruding shaft 11a is provided.
And the second protruding shaft 11b protrudes from both sides of the pallet 1. However, when a rotation preventing means such as mounting the pallet 1 on a transfer belt is provided, the second protruding shaft 11b, the second protruding shaft 11b,
It is not necessary to provide the idling ring 2b and the concave portion 33 of the divided disk 3, and there is no limitation.

In this embodiment, the first pallet 1a
Are arranged side by side with the second pallet 1b without a gap. However, the pallet 1 may be sent at a free pitch with a gap provided, and there is no limitation.

In this embodiment, the transfer means 5 is formed of a transfer belt made of resin. However, when the load is heavy, the transfer means 5 may be formed of, for example, a strong chain, and there is no limitation.

[0032]

According to the first aspect of the present invention, since the fitting grooves of the divided disks are provided on the circumferential portion at a predetermined pitch less than the fixed pitch, the idle rings of the pallets fed at a free pitch are fitted while rotating. The pallet moves and is divided at a predetermined pitch by rotating the divided disk around the central axis by fitting with the mating groove, and the recess provided at a constant pitch on the circumferential portion of the interlocking disk has a protruding shaft. And the receiving portion of the transfer means receives the protruding shaft and transfers the pallet, and this operation is sequentially repeated, so that the wear of the contact portion between the pallet and the transfer means is reduced, and the pallet is securely held. It can be transferred from a predetermined pitch to a constant pitch. Furthermore, when the pallets are arranged side by side without gaps and a pressing force in the feed direction, that is, a so-called line pressure is applied, the fitting groove of the divided disk absorbs the line pressure and smoothly shifts the pallets from a predetermined pitch to a constant pitch. Can be transferred.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the radius of the round portion on the interlocking disc side in the fitting groove is adjusted so that the pallet moves from the free pitch to the predetermined pitch at a constant acceleration. The pallet, which is sent at a free pitch, comes into contact with the radius part, and the pallet moves at a low speed and gradually at a high speed, that is, at a constant acceleration, that is, at a constant speed. The pallet can be divided into predetermined pitches without dropping the load.

According to the third aspect, in addition to the effect of the first aspect, since the width of the fitting groove of the divided disk is formed to be wider toward the opposite side of the center axis, it protrudes from both sides of the pallet. Even if each of the projected shafts is displaced from the direction perpendicular to the feed direction, when the idle ring of the pallet fits into the fitting groove, the displacement is corrected, and the projecting shafts on both sides are securely fitted into the fitting groove. can do.

According to the fourth aspect, in addition to the effect of the first aspect, since the divided disk is made of a synthetic resin having a lower hardness than the idle ring, the idle ring of the pallet fits into the fitting groove. Noise generated when they are combined can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view of one side of the above.

FIG. 3 is a side view on the other side of the above.

FIG. 4 is a perspective view of the pallet.

FIG. 5 is a perspective view showing a conventional example.

FIG. 6 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pallet 11 Projection shaft 2 Idling ring 3 Dividing disk 31 Fitting groove 32 Circumference part 36 Center axis 4 Interlocking disk 41 Depression 42 Circumference part 5 Transfer means 51 Receiving part

Claims (4)

[Claims] 1. A transfer device for transferring a pallet sent at a free pitch at a constant pitch, comprising: a protruding shaft protruding from both sides of the pallet; and a protruding shaft provided at a base end side of the protruding shaft. A pallet is rotated from a free pitch to a predetermined pitch by rotating the pallet at a predetermined pitch less than a predetermined pitch and rotating the pallet at a predetermined pitch less than a predetermined pitch. A dividing disk which moves to divide the pallet, an interlocking disk which rotates in conjunction with the dividing disk so that recesses provided at a constant pitch in the circumferential portion are sequentially engaged with the projecting shafts of the divided pallets, and a projecting shaft. Receiving means for receiving the receiving pallet, the receiving means being arranged in parallel so as to be located at the same pitch and the same position as the concave portion, and transferring the pallet by rotating coaxially with the interlocking disk. Transfer apparatus. 2. The constant pitch feed transfer device according to claim 1, wherein the fitting groove of the divided disk is provided with a round portion on the interlocking disk side so that the pallet moves at a constant acceleration. 3. The constant pitch feed according to claim 1, wherein the fitting groove of the divided disk is formed such that the width of a plane perpendicular to the central axis becomes wider toward the opposite side of the central axis. Transfer equipment. 4. The constant pitch feed transfer apparatus according to claim 1, wherein the divided disk is made of a synthetic resin having a lower hardness than the idle ring.