JPH03287330A - Automatic assembly line - Google Patents

Abstract

PURPOSE:To reduce the occupation space of the whole system by providing a drying chamber just under a conveyer, and a vertical conveyer between the conveyer and the drying chamber. CONSTITUTION:In an automatic assembly line which furnishes a conveyer 1 driven intermittently to stop parts to be assembled loaded on a conveying pallet 7 at specific positions, and a drying chamber 3 in which the parts to be assembled are dried every time after one process is finished, the drying chamber 3 is arranged just under the conveyer 1, and a vertical conveyer 4 to move the parts to be assembled between the conveyer 1 and the drying chamber 3 each other is prepared. By using a constitution, the space under a frame which was not utilized effectively so far is now used very effectively, and as a result, the whole body of the automatic assembly line can be made compact, and the space necessary to install the system in a shop is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The invention of this application relates to an automatic assembly line having a drying chamber and a cooling chamber.

[Prior art]

Examples of automatic assembly lines include those that assemble objects by welding, bolting, and gluing at a stop position of objects that are tactically fed by a conveyor.

Among these, those that are assembled by gluing are equipped with a drying chamber near the conveyor, and the objects to be assembled are carried into the drying chamber for each step of gluing, and the time required for the glue to dry, that is, This shortens the time required for assembly.

The structure of the drying room is such that a chain conveyor is installed inside the drying room, and mounting seats are attached to the chain to place transport pallets at regular intervals, and these transport platforms are circulated. Common.

An example of an automatic assembly line having a drying chamber is an automatic assembly line for speakers, and in conventional lines, the positional relationship between the conveyor and the drying chamber is as shown below. Namely, as shown in FIG. A drying chamber (3) is located on the other side of the frame (2). That is, the conveyor (1) and the drying room (3)
) are installed in parallel.

As shown in the same figure and FIG. 16, the drying chamber (3) accommodates a chain conveyor (90) to which a large number of conveyor pallet support seats are attached.

■As shown in Fig. 17, the step of the worker (W) is used as a drying chamber (3), and this is placed on top of this drying chamber (3) together with the conveyor (1). A stand for (
2) is installed.

As shown in the figure, a vertical conveyor (4) is interposed between the conveyor (1) and the drying chamber (3).
This vertical conveyor (4) transports the objects to be assembled from the conveyor (1) to the chain conveyor (90) in the drying room (3).
(the plane of which is shown in FIG. 18).

However, since the automatic assembly line described in (1) above takes up a large amount of space, a problem arises in that a large space is required when it is installed in a factory.

In addition, on the speaker assembly line mentioned above, there is a drying room (3
) and has a cooling chamber, but the same can be said about this cooling chamber.

[Problem to be solved by the invention]

Therefore, an object of the invention of this application is to provide an automatic assembly line that occupies a small space even though it has a drying chamber and a cooling chamber.

[Means for solving the problem] The invention according to claim 1 of this application relates to an automatic assembly line, and by intermittent driving by a servo motor,
An automatic assembly line that has a conveyor (1) that stops the objects to be assembled placed on a conveyor pallet (7) at a predetermined position, and a drying chamber (3) that dries the objects to be assembled after each step. A drying chamber (3) is provided directly below the conveyor conveyor (1), and
A vertical conveyor (4) is provided for moving the objects to be assembled between the drying chamber (3) and the drying chamber (3).

In the invention according to claim 2 of this application, the conveying pallet (
7) is an automatic assembly line having a conveyor (1) for stopping the objects to be assembled at a predetermined position, and a cooling chamber (99) for drying the objects to be assembled after each step, , a cooling chamber (99) right below the conveyor (1).
), and the conveyor (1) and the cooling chamber (
99) Vertical conveyor (
4).

In addition, in the invention described in claim 3 of this application, the above claim 1
Regarding the invention described above, an outbound conveyor (1) that conveys the objects to be assembled to the downstream side and a return conveyor (1) that conveys only the conveyance pallet (7) back to the upstream side are arranged at regular intervals. These conveyors (1) (1) for the forward and return trips are provided in parallel, and the mutual interval therebetween is approximately equal to the width of the drying chamber (3).

In the invention set forth in claim 4 of this application, with respect to the invention set forth in claim 2, only the forward transport conveyor (1) for transporting the objects to be assembled to the downstream side and the transport pallet (7) are moved to the upstream side. A return transport conveyor (1) for return transport is provided in parallel at regular intervals, and the mutual spacing between these forward and return transport conveyors (1) (1) is made to approximately match the width of the cooling chamber (99). ing.

[Effect]

The invention of this application has the following effects.

(Action of the invention according to claim 1 or 2) A drying chamber (3) or a cooling chamber (
99), the lower part of the frame, which was not used effectively in conventional automatic assembly lines with drying rooms and cooling rooms, can be used effectively, and as a result, the entire automatic assembly line can be made smaller. This means that you can do it.

(Action of the invention according to claim 3 or 4) An outgoing transport conveyor (1
) and a return conveyor (1) that returns only the conveyor pallet (7) to the upstream side and are installed in parallel at regular intervals, the width of the automatic assembly line can be made considerably smaller. .

〔Example〕

Hereinafter, the structure of the invention of this application will be explained with reference to the drawings showing one embodiment.

This example is an automatic speaker assembly line, and as shown in Fig. 1, the first step (I) is to integrate the yoke, magnet, plate, and frame by adhesion or the like.
and a second step (■) in which a damper, paper cone, gasket, etc. are additionally bonded to the intermediate product of the speaker manufactured by this first step (I), and an intermediate product manufactured by this second step (II). The third step is to add a dust cap to the
(2), a fourth step (IV) in which the intermediate product produced in the third step (1) is reversed, etc., and a final step (V) in which the magnet is magnetized and stamped. .

In addition, in each of the above steps, gap adjustment between component parts, cleaning, etc. are performed.

In the 1st, 2nd, and 3rd steps (I), (II), and (■) above, a drying chamber (3) is provided to promote adhesion between the component parts, and the fourth step (TV) is the final step. A cooling chamber (99) is provided to accelerate the magnetization work in step (V).

The main difference in the configuration of each of the above steps is whether the drying chamber (4) or the cooling chamber (99) is included.
Therefore, only the first step (1) of the above steps will be described below.

As shown in Fig. 2, the automatic assembly line constituting the first step (1) consists of an outbound transport conveyor (1a
), a return transport conveyor (lb) that returns the empty transport pallet to the upstream side, and the above-mentioned outbound and return transport conveyors (la) (lb) (the transport conveyor (I) described in the means column) Drying room (3) located directly below the corresponding
and speaker intermediates on the outbound transport conveyor (la).
and a vertical conveyor (4) for moving between the drying room and the drying room (3);
The outbound transport conveyor (1a) and the vertical conveyor (4)
It is comprised of loading and unloading means (5) and (6) for transferring speaker intermediate items between the two. Incidentally, the distance between the outer surfaces of the forward and return transport conveyors (la) and (lb) is set to be slightly smaller than the width of the drying chamber (3), as shown in FIG. 14.

As shown in Fig. 3, both the forward and return transport conveyors (la) and (lb) are constructed by connecting multiple short conveyors (C) with a total length of 2M in series, and two conveyors (
C) Drive means (k) provided with (C) at these connecting parts
All driving means (k) are controlled by one controller (K).

As shown in FIGS. 4 and 5, the conveyor (C) has frame members (10) (10) arranged in parallel at regular intervals,
At each end of the frame members (10) (10), rotary shafts (11) (1
1) and toothed wheels (12) (12) attached near the frame material (10) on this rotating shaft (11) (11).
and a loop-shaped double-sided toothed timing belt (13) stretched between the toothed wheels (12) (12) in a meshing manner.
).

As shown in Fig. 4, a conveying pallet (7) (in the same figure, a speaker intermediate (S) is indicated by a chain double-dashed line on the upper part of this) is attached to the double-sided toothed timing bell 1-(13) (13). (shown) are intermittently transferred to the downstream side in an interlocking manner.

In addition, the above-mentioned double-sided toothed timing (13) is the black rubber 3~
It uses a polyurethane material that is 5 times more expensive, and the core material is made up of a high tension castile cord embedded in a spiral shape without interruption.

As shown in FIG. 4, the drive device (k) is composed of a servo motor (14) and a worm gear (15) that is rotationally driven by the servo motor (14).
The rotational force of the output shaft is transmitted to the rotating shaft (11) via the toothed wheels (16), (18) and the timing belt (17).

In addition, although the controller (K) is basically a known one, in order to be able to control a plurality of servo motors (14) by one controller (K), the capacity of the oscillator section is changed to This is made larger in accordance with the current consumption of the pulse input section of the motor (14). Then, the rotation speed of the servo motor (k) by the controller (K) is set in the range from a stopped state to the next stopped state, with the initial region being an acceleration region, the intermediate region being a constant velocity region, and the final region being a deceleration region. , are set respectively. That is, the controller (K) allows the conveyors (C) to carry out so-called high-speed tact feeding.

On the other hand, the conveyor pallet (7) has a square shape with the negative half set slightly larger than the distance between the double-sided toothed timing belts (13), and the double-sided toothed timing belt ( 13) is provided with a plurality of convex portions that mesh with the teeth of item 13). A jig is installed in the center to allow precise assembly.

Since this product has the above-mentioned configuration, even if the forward transport conveyor (1a) is long, the overall elongation of the double-sided toothed timing belt (13) is small, and the transport pallet ( 7) and the double-sided toothed timing belt (13), the conveying pallet (7) will stop almost exactly at the position set by the controller (K).

The vertical conveyor (4) of the conveyor 4 is arranged near the end of the process section as shown in Fig. 2, and is located between the speakers placed on the conveyor pallet (7) shown in Fig. 9. The object (S) is transferred from the outbound transport conveyor (1a) into the drying chamber (3).

As shown in FIGS. 8 and 9, this vertical conhair (4) is provided with a rotating shaft (42) having a pair of sprockets (41) (41) on the top of a vertically long casing (40), and , a pair of sprockets (43) at the bottom of this (
A rotating shaft (44) having a rotating shaft (43) is provided, and a loop-shaped chain (45) is provided between the sprockets (41) and (43).
).

As shown in the figure, the above-mentioned chains (45) (45) have brackets (46) (46
) are attached, and these brackets (46) (46) provide a mounting seat (47) for mounting the transport pallet (7).
is made up of.

For this reason, the left and right brackets (46) (4
6) The distance between them is approximately equal to the length of the pieces of the transport pallet (7).

As shown in the figure, the chain (45) described above is connected to a geared motor (4) provided at the top of the casing (40).
8), and by controlling the geared motor (48), the above-mentioned mounting seat (48) is rotated.
47) at fixed time intervals, that is, the forward transport conveyor (1
It is designed to stop sequentially in accordance with the transport of the transport pallet (7) according to step a).

As shown in FIG. 6 and FIG.
), and a long rodless cylinder (50
) and the output part (52) of this rodless cylinder (50)
The cylinder (
51).

As shown in FIG. 7, the rodless cylinder (50) has an output section (52) whose moving direction is aligned with the conveying pallet (
7), and the output shaft (53) of the cylinder (51) is set to advance and retreat in the vertical direction. As shown in FIGS. 6 and 7, a supporting bracket (54) for receiving the conveying pallet (7) is fixed to the output shaft (53).

The movement range of the conveyance pallet (7) placed on the support bracket (54) is horizontally moved from the downstream end of the outbound conveyor (1a) to the vertical conveyor (4) described above. up to the mounting seat (47), and in the vertical direction, the conveyor pallet (7) is mounted with a double-sided toothed timing bell) (
13) and set it up so that it can be placed again.

In addition, the rodless cylinder (50) of this charging means (5)
The operations of the cylinder (51) and the cylinder (51) are synchronized with the operation of the mounting seat (47) on the above-mentioned vertical conveyor (4), and the conveyance pallet (7) transferred by the forward conveyor (1a) is It is designed to be moved and placed one after another on the above-mentioned placement seat (47).

On the other hand, the ejecting means (6), as shown in FIGS. 6 and 7, has the same configuration as the above-mentioned inputting means (5), and includes a rodless cylinder (60), a cylinder (61), and an output section (
62), an output shaft (63), a supporting bracket (64), and a bracket (65). Then, the operation of the rodless cylinder (60) and cylinder (61) is controlled by the mounting seat (47) in the vertical conveyor (4).
) by synchronizing the operation of the vertical conveyor (4).
From there, the transport pallets (7) are sequentially moved and placed on the outgoing transport conveyor (1a) on the upstream side.

・3-i] As shown in FIG. 10, the drying room (3) has a chain conveyor (30) inside thereof, and as shown in FIG. Transport pallet mounting seats (31) are installed at regular intervals.

The chain conveyor (30) is shown in Figures 11 and 12.
As shown in the figure, it is driven by a geared motor (39), and the chain (32) is connected to outbound sprockets (33a) (33b) as shown in FIG.
・= (33g) (33h) and the return trip sprocket (34a) (34b) ・= (34g) (3
4h). As shown in FIG. 10, this chain connecting hair (30) is provided with a tension sprocket (35), and this tension sprocket (35) allows the chain (32
) The above-mentioned chain (32) is such that a constant tension is always applied to the chain (32), as shown in FIGS. 8 and 9.
A vertical conveyor belt (4) is passed through, and the descending conveyor pallet (7) is received by a conveyor pallet mounting seat (31) attached to a chain (32).

Then, as the chain (32) moves, the conveyance pallet (7) placed on the conveyance balent mounting seat (31) moves from the outbound sprocket shown in FIG. 13) [(33a)→(
33b) → (33c) → (33d) → (33e) → (3
3f) => (33g) → (33h)] → Sprocket for return trip [(34a) = + (34b) 4 (34c
)→(34d) 4 (34e)→(34f)→(34
g) +(34h)] and returns to the upstream side of the input position.

Then, the transport pallet (
7) is the second step (II) using the above-mentioned extraction means (6).
) is placed at the upstream end of the outbound transport conveyor (1a).

〔Effect of the invention〕

Since the invention of this application has the above-described configuration, it has the following effects.

The space below the pedestal, which has not been used effectively in the past, can be used effectively, and as a result, the entire automatic assembly line can be made smaller, and the space required when installed in a factory is reduced.

[Brief explanation of the drawing]

FIG. 1 is an overall diagram of the automatic assembly line of the invention of this application. FIG. 2 is a detailed diagram of the first step of the automatic assembly line. FIG. 3 is an explanatory diagram of the conveyor of the assembly line and its control section. FIG. 4 is a side view of the conveyor. FIG. 5 is a top view of the conveyor. FIG. 6 is a side view of the loading means and unloading means of the automatic assembly line. FIG. 7 is a top view of FIG. 6. FIG. 8 is a sectional view of the vertical conveyor of the automatic assembly line. FIG. 9 is an explanatory diagram of the transfer from the vertical conveyor to the chain conveyor in the drying chamber. FIG. 10 is a top view of the drying chamber. FIG. 11 is a cross-sectional side view of the drying chamber. FIG. 12 is a longitudinal sectional view of the drying chamber. Figure 13 is a diagram showing the relationship between the sprocket and chain of the chain conveyor in the drying room. FIG. 14 is a vertical cross-sectional view of a line showing the positional relationship between the forward and return transport conveyors and the drying chamber. FIGS. 15 and 16 are explanatory diagrams of a conventional automatic assembly line. FIGS. 17 and 18 are explanatory diagrams of other conventional automatic assembly lines, and in the figures (1)...conveyor (3)...drying room (4)...
... Vertical conveyor (5) ... Input means (6) ... Removal means (7) ... Transport pallet (99) ... Cooling room

Claims (1)

[Claims] 1. A conveyor (1) that is intermittently driven by a servo motor to stop the objects to be assembled placed on a conveyor pallet (7) at a predetermined position; This is an automatic assembly line having a drying chamber (3) for drying each time the assembly is completed, and the drying chamber (3) is provided directly below the conveyor (1), and the line is connected to the conveyor (1) and the drying chamber (3). ) An automatic assembly line characterized by being provided with a vertical conveyor (4) for moving objects to be assembled between each other. 2. A transport conveyor (1) that is driven intermittently by a servo motor to stop the objects to be assembled placed on the transport pallet (7) at a predetermined position, and to dry the objects to be assembled each time one process is completed. This is an automatic assembly line having a cooling chamber (99), the cooling chamber (99) being provided directly below the conveyor (1), and the conveyor (1) having a cooling chamber (99).
) and a cooling chamber (99).An automatic assembly line characterized by being provided with a vertical conveyor (4) for moving objects to be assembled between the cooling chamber (99). 3. An outgoing transport conveyor (1) that transports the objects to be assembled to the downstream side and a return transport conveyor (1) that transports only the transport pallet (7) back to the upstream side are installed in parallel at regular intervals. 2. The automatic assembly line according to claim 1, wherein the distance between the conveyors (1) and (1) is approximately equal to the width of the drying chamber (3). 4. An outgoing transport conveyor (1) that transports the objects to be assembled downstream and a return transport conveyor (1) that transports only the transport pallet (7) back to the upstream side are installed in parallel at regular intervals. 2. The automatic assembly line according to claim 1, wherein the distance between the conveyors (1) and (1) is approximately equal to the width of the cooling chamber (99). 5. Claims 1 to 5, characterized in that a loading means (5) and a taking-out means (6) are interposed between the transport conveyor (1) and the vertical conveyor (4) for transferring between them. 4. The automatic assembly line according to any one of 4.