JPH0451445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an object transfer device for sequentially transferring glass containers, paper containers, and other objects.

Conventionally, in this type of object transfer device, glass containers, paper containers, and other objects that have been processed at a preceding station are sequentially transferred to a subsequent station by a belt conveyor.

When the object transfer device starts operating, the time required to stabilize the operation of the belt conveyor is generally shorter than the time required to stabilize the operation of the trailing station. It is necessary to delay the start of operation.

Furthermore, in the event of an accident or failure at the trailing station, even if the drive power to the belt conveyor is cut off, a considerable amount of force will continue to be applied to the trailing station due to the inertia of the belt conveyor. This tends to amplify the damage caused by accidents or breakdowns that occur during

The present invention has been made in view of the above points,
The aim is to provide an object transfer device in which the above-mentioned drawbacks are eliminated.

According to the present invention, the object is an object transfer device that sequentially transfers objects from a leading station to a trailing station by means of a belt conveyor, and the object to be transported is transported near an entrance of the trailing station. a guide means disposed near the entrance to guide the object in a predetermined direction; a first detection means configured to detect whether or not the object is present at a predetermined position upstream of the guide means and output a first signal corresponding to the presence or absence of the object; , detecting whether or not the object is present at a predetermined position between the rotary engagement means and the inlet of the trailing station, and corresponding to the presence or absence of the object, a first signal opposite to the first signal; a second detection means that outputs a second signal; a logic circuit that creates an AND signal of the first signal and the second signal;
and load means for applying a predetermined load to the rotation of the rotary engagement means in order to control the transport speed of the object according to the state of the AND signal. .

The details will be explained below with reference to the drawings.

In FIGS. 1, 2, and 3, a belt conveyor BLT is stretched between a leading station _ST1 and a trailing station _ST2 .

Belt conveyor BLT is the advance station
A BOT that is a glass container, paper container, or other object that has been properly treated such as cleaning in ST ₁ .
are being sequentially transferred to the trailing station ST ₂ .

Guide members GDR ₁ , GDR ₂ , GDL 1 , and _{GDL 2 as} guide means are arranged on both sides of the belt conveyor BLT near the entrance of the trailing station ST ₂ .

Guide members GDR ₁ , GDR ₂ and guide members GDL ₁ ,
The distance from GDL ₂ is set to be slightly larger than the width of the object BOT, for example.

The guide members GDR ₁ and GDR ₂ are arranged vertically apart from each other, and the guide members GDL ₁ and GDL ₂ are arranged vertically apart from each other.

There are guide members near guide members GDL ₁ and GDL ₂ .
Star wheels STW _{1 and} STW ₂ are arranged as rotational engagement means for sequentially transporting the guided objects BOT one by one between GDL ₁ and GDL ₂ and guide members GDR ₁ and GDR 2.

The star wheels STW ₁ and STW ₂ have the same shape and are fixed to the same rotating shaft SHF at intervals,
Guide members GDR ₁ , GDR ₂ and guide members GDL ₁ , GDL ₂
The peripheral concave portion of each star wheel is brought into contact with the circumferential surface of the object BOT, which is being moved by the belt conveyor BLT between the two and rotated.

That is, the star wheels STW ₁ and STW ₂ are configured to rotationally and retentively engage the object BOT.

The rotating shaft SHF is supported by bearings BRG ₁ and BRG ₂ , and a brake disc BRD is fixed to the lower end.

Near the brake disc BRD, there is an electromagnetic device EM that prevents and stops the rotation of the brake disc BRD, and a synthetic resin brake piece is pressed against the brake disc BRD with a certain strength to apply a constant load to the brake disc BRD. A pressurized air device PA is arranged to reduce the rotation.

A detection means DET ₁ is arranged in the trailing station ST ₂ to detect abnormalities in its operation, and a star-shaped wheel is installed at the entrance of the trailing station ST ₂ .
Detection means for detecting whether the object BOT that has passed through STW ₁ and STW ₂ exists at a predetermined position.
DET ₂ is located, and furthermore, star-shaped wheel STW ₂ ,
A detection means DET ₃ is arranged upstream of STW ₂ to detect whether or not an object BOT exists.

As described above, the object transfer device of this embodiment is an object transfer device that sequentially transfers the object BOT from the preceding station ST ₁ to the following station ST ₂ by the belt conveyor BLT. guide members GDL ₁ , GDL ₂ , GDR ₁ , and GDR ₂ arranged near the entrance of the trailing station ST ₂ in order to guide them in a predetermined direction near the entrance of the trailing station ST 2;
A star wheel STW ₁ configured to rotationally and retentively engage an object BOT transported by a belt conveyor BLT and guided by guide members GDL ₁ , GDL ₂ , GDR ₁ , GDR ₂ , STW ₂ , and a first signal that detects whether or not an object BOT exists at a predetermined position upstream of the guide members GDL ₁ , GDL ₂ , GDR ₁ , and GDR ₂ and outputs a first signal corresponding to the presence or absence of the object BOT. detecting whether or not an object BOT exists at a predetermined position between the detection means DET ₃ of 1, the star wheels STW ₁ and STW ₂ , and the entrance of the trailing station ST ₂ , and responding to the presence or absence of the object BOT; , a second detection means DET ₂ that outputs a second signal opposite to the first signal, and an AND circuit AND as a logic circuit that creates an AND signal of the first signal and the second signal. and a rotary shaft constituting a load means that applies a predetermined load to the rotation of the star wheels STW ₁ and ST ₂ in order to control the transport speed of the object BOT according to the state of the AND signal.
SHF, brake disc BRD and pressurized air system
It is equipped with a PA.

Next, the operation of the object transfer device of the present invention will be explained.

First, start the operation of the belt conveyor BLT with no object BOT on the belt conveyor BLT,
In addition, the operations of the preceding station ST ₁ and the following station ST ₂ are also started.

The object to be processed is placed in the trailing station ST ₂ .
Since BOT is not supplied, it is kept on standby if desired.

Processing of the object BOT at the preceding station ST ₁ progresses, and the belt conveyor is
Once supplied to the BLT, the belt conveyor BLT starts transporting it towards the trailing station ST ₂ .

Before the object BOT reaches the detection means DET ₃ , low-level signals are output from the detection means DET ₁ , DET ₂ , and DET _3, respectively.

Since the output signal of the detection means DET ₁ is given to the electromagnet device EM, the electromagnet device EM is in a de-energized state.

The logical product of the inverted signal of the output signal of the detection means DET ₂ by the inversion circuit INV and the output signal of the detection means DET ₃ is created by the AND circuit AND, and the pressurized air device
PA is supplied, so the pressurized air device PA is inactive.

Since the electromagnetic device EM is de-energized and the pressurized air device PA is inactive, no restraining force is applied to the brake disc BRD.

When the object BOT reaches the detection means DET ₃ , the detection means DET ₃ outputs a high level signal.

Since the detection means DET ₂ outputs a low level signal, the output of the inverting circuit INV becomes high level.

Therefore, both inputs of the AND circuit AND are at a high level, and a high level signal is applied to the pressurized air device PA.

This causes the pressurized air device PA to press its brake piece against the brake disc BRD with a constant strength.

Therefore, the star wheels STW ₁ and STW ₂ are guide members
It is possible to reduce the transfer speed of the object BOT being transferred by the belt conveyor BLT between GDL ₁ , _{GDL 2 and} the guide members GDR 1 , GDR ₂ .

This makes it possible to reduce the transport inertia of the object BOT supplied to the trailing station ST ₂ , which in turn reduces the inertia of the object BOT supplied to the trailing station ST ₂ .
It can reduce the impact of BOT.

When the object BOT reaches the detection means DET ₂ , a high level signal is output from the detection means DET ₂ , is inverted by the inversion circuit INV and then given to the AND circuit AND, so that the level of the output signal of the detection means DET ₃ is Regardless of whether the level is high or low, the output signal of the AND circuit AND will be at a low level.

This puts the pressurized air device PA into a non-operating state.

This means that as long as the object BOT exists at the detection position of the detection means DET ₂ , the star wheels STW ₁ and STW ₂ detect the object.
A means for detecting an impact on the trailing station ST ₂ caused by an object BOT that does not reduce the transport speed of the BOT.
This is because it can be reduced by the object BOT present at the detection position of DET ₂ .

Detection means placed in the trailing station ST ₂
If DET ₁ detects an object BOT or other abnormality, it will send out a high level output signal, so the electromagnet device EM
is in an excited state.

As a result, the rotation of the brake disk BRD is restricted, and the rotational movement of the star wheels STW ₁ and STW ₂ is also prevented.

In turn, the object BOT engaged with the star wheels STW ₁ and STW ₂ is connected to the star wheels STW ₁ and STW ₂ and the guide member.
GDL ₁ , GDL ₂ , GDR ₁ , and GDR ₂ , and their transfer is prevented.

This allows the trailing station ST ₂ to
The force applied by the BOT can be reduced, and the work of removing abnormalities occurring in the trailing station ST ₂ can be facilitated.

In this case, it will be obvious that the power switch of the drive motor of the belt conveyor BLT may also be shut off in response to the high level output of the detection means _DET1 .

The above-mentioned star wheels STW ₁ and STW ₂ are guide members
Object in cooperation with GDL ₁ , GDL ₂ , GDR ₁ , GDR ₂
It constitutes an object transfer speed control means which is a rotational engagement means for appropriately controlling, that is, reducing or blocking the transfer speed of the BOT.

It will be clear that the object transfer control means may be formed by an impeller or other suitable rotational engagement means.

It will also be clear that suitable rotational engagement means or the like which do not need to cooperate with the guide members GDL ₁ , GDL ₂ , GDR ₁ , GDR ₂ may be used as object transport speed control means.

It will be clear that any suitable device other than the pressurized air device PA electromagnetic device EM may be used as the loading means for applying a load to the rotary engagement means.

As is clear from the above, since the object transfer device of the present invention has means for controlling the transfer speed of the object to be transferred at the entrance of the trailing station, it is possible to reduce the impact or damage that the trailing station receives from the object to be transported. Can be done.

More specifically, in the object transfer device of the present invention, when an abnormality occurs in the transfer state of the object while the object is being transferred, the first detection means and the second detection means
At least one of the detection means detects the abnormality and outputs a first signal and/or a second signal corresponding to the abnormality, and a logic circuit to which the first and second signals are input performs a logical product. The abnormal state is reflected in the signal, and the load means is configured to operate in order to control the rotation of the rotary engagement means based on the logical product signal, so that the load means is connected to the rotary engagement means. Since it is possible to control the rotational speed of the rotational engagement means, that is, the transfer speed of the object while the rotational engagement means is securely engaged with the object, the transfer speed can be reliably controlled, and extreme In some cases, the transfer of the object can also be stopped.

Therefore, in the object transfer device of the present invention, the transfer speed of the object can be reliably gradually reduced by the load means via the rotary engagement means, so that when the object suddenly stops in the transfer state, the object It is possible to reliably prevent overruns due to inertia that tend to occur in the object transfer device, and this overrun can prevent damage to the object or damage to the object transfer device that may occur in a chain reaction due to an abnormality that occurs in the object transfer device. Damages such as breakdowns can be prevented.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the object transfer device of the present invention, and FIG.
The figure is a sectional view of the same AA, and Fig. 3 is a circuit diagram of the same. AND...AND circuit, BLT...belt conveyor, BOT...object, BRD...brake disc, BRG ₁ , BRG ₂ ...bearing, DET ₁ , DET ₂ ,
DET ₃ ...detection means, EM...electromagnetic device,
GDL ₁ , GDL ₂ , GDR ₁ , GDR ₂ ...Guiding member,
INV...Inverting circuit, PA...Pressurized air device, SHF
... Rotating shaft, ST ₁ ... Leading station,
ST ₂ ... Trailing station, STW ₁ , STW ₂ ...
star car.

Claims (1)

[Scope of Claims] 1. An object transfer device that sequentially transfers objects from a leading station to a trailing station by a belt conveyor, the object being transported to a predetermined location near the entrance of the trailing station. a guide means disposed near the entrance for guiding in a direction; and configured to rotationally and retentively engage an object conveyed by the belt conveyor and guided by the guide means. a first detection means for detecting whether or not the object is present at a predetermined position upstream of the guide means and outputting a first signal corresponding to the presence or absence of the object; a second signal opposite to the first signal that detects whether or not the object is present at a predetermined position between the engagement means and the entrance of the trailing station and corresponds to the presence or absence of the object; a second detection means that outputs
a logic circuit for creating an AND signal of the first signal and the second signal; and a logic circuit for controlling the rotation of the rotary engagement means to control the transport speed of the object according to the state of the AND signal. and loading means for applying a predetermined load. 2. The object transfer device according to claim 1, wherein the guide means comprises a pair of guide members arranged on both sides of the belt conveyor. 3. The first signal has a high level when an object is present and a low level when an object is not present, and the second signal has a low level when an object is present and a high level when an object is not present. An object transfer device according to claim 1 or 2. 4. An object according to any one of claims 1 to 3, wherein the load means is configured to be inactive when the state of the AND signal is at a low level. Transfer device. 5. The object transfer device according to any one of claims 1 to 4, wherein the rotational engagement means includes a star wheel. 6. The object transfer device according to any one of claims 1 to 4, wherein the rotational engagement means includes an impeller. 7. Any one of claims 1 to 6, wherein the loading means includes a rotating shaft, a brake disk mounted on the rotating shaft, and a pressurized air device applying a load to the brake disk. The object transfer device according to item 1. 8 An object transfer device that sequentially transfers objects from a leading station to a trailing station by means of a belt conveyor, wherein the object is guided in a predetermined direction near the entrance of the trailing station. a guide means disposed near the inlet; and rotational engagement means configured to rotationally and retentively engage an object conveyed by the belt conveyor and guided by the guide means. , a first detection means for detecting whether or not the object is present at a predetermined position upstream of the guide means and outputting a first signal corresponding to the presence or absence of the object, the rotary engagement means and the rear a second signal detecting whether or not the object is present at a predetermined position between the row station and the entrance portion of the row station and outputting a second signal opposite to the first signal corresponding to the presence or absence of the object; a detection means;
a third detecting an abnormality of an object in the trailing station and outputting a third signal corresponding to the abnormality;
a detection means, a load means for applying a predetermined load to the rotation of the rotational engagement means to control the transfer speed of the object, and an AND signal of the first signal and the second signal. and a logic circuit for controlling the load means according to the AND signal and the third signal. 9. The object transfer device according to claim 8, wherein the guide means comprises a pair of guide members arranged on both sides of the belt conveyor. 10 The first signal has a high level when an object is present and a low level when an object is not present, and the second signal has a low level when an object is present and a high level when an object is not present. Object transport according to claim 8 or 9, wherein the third signal has a high level when an abnormality of the object is detected in the trailing station, and has a low level when not detected. Device. 11. The object transfer device according to any one of claims 8 to 10, wherein the rotational engagement means includes a star wheel. 12. The object transfer device according to any one of claims 8 to 10, wherein the rotational engagement means includes an impeller. 13. Claims 8 to 12, wherein the loading means includes a rotating shaft, a brake disk mounted on the rotating shaft, and a pressurized air device and an electromagnetic device that apply a load to the brake disk. Object transfer device according to any one of paragraphs. 14. The object transfer device of claim 13, wherein the pressurized air device is operated by the AND signal and the electromagnetic device is operated by the third signal. 15 The pressurized air device reduces the rotational speed of the brake disc when the AND signal goes high, and reduces the rotational speed of the brake disc when the AND signal goes low. without decreasing the electromagnetic device, the electromagnetic device stops the rotation of the brake disc when the third signal goes high and stops the rotation of the brake disc when the third signal goes low. 15. The object transfer device according to claim 13 or 14, which is configured so as not to change the speed. 16. According to any one of claims 8 to 15, the belt conveyor drive motor is configured to shut off a power switch when the third signal becomes a high level. object transfer device.