JPS6057409B2 - Processed product manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a workpiece manufacturing apparatus for manufacturing a series of products from a series of workpieces.

The process comprises sequentially performing one operation (n is a positive integer greater than or equal to 1) on each workpiece by each device of a set of n operating devices. include. Such a process will hereinafter be referred to as "the above-mentioned type of process", and this type of process will be referred to as "the above-mentioned type of process".
020 (JP, Y1) or used in such a process will be referred to below as ``equipment of the above type''.

The term "semi-finished product" as used in the specification means a manufactured product that has undergone any one or more of the operations described above with equipment other than the last of the equipment set. In addition, the term "product" refers to a processed product that has been operated by the last device in the processing equipment set, regardless of whether or not the next operation should be performed to make it a finished product. The term ``processed product'' also includes, depending on the context, the objects submitted to the first processing device (whether or not they have undergone previous operations), as well as the aforementioned semi-finished products and finished products. Any one or more of the operations may include any manufacturing operation for processing or processing into a workpiece.

Non-limiting examples of such operations include shaping, cutting, printing, coating or inspecting the workpiece, or forming at least one separate element or substance on or in or to the workpiece. It includes the operation of arranging or attaching. Although the term ``operating device'' may be interpreted literally, for the avoidance of doubt, this term
Although the present invention includes a removable element (for example, a bit), it is not limited to devices in which this element is temporarily absent. In the sequential production of a series of products, especially in high-speed manufacturing, multiple sequential operations are often carried out on the workpiece, with each operation carried out by a separate operating device. A product is made. In many cases, current practice is that sequential operations are carried out in a number of separate manufacturing units equal to the number of operations, with workpieces being transferred intermittently from one unit to another in series. Ru. Although such an arrangement is satisfactory and efficient when relatively large production volumes are required, it becomes less economical for relatively small production volumes;
It requires a relatively high investment amount, occupies a relatively large factory area, and has high maintenance costs. In apparatus and processes of the type mentioned above, all the operations to be carried out on the workpiece can be easily carried out in a single machine, and in particular the speed at which each of the above operations is carried out can reduce the number of said operations. OBJECT OF THE INVENTION It is an object of the present invention to provide a machine in which a plurality of operations are repeated in the same manner for each product in order to produce the products.

According to a first aspect of the invention, in a process of the above type,
A continuous, synchronous relative movement is carried out between said set of operating devices and the circular transfer means.

Each product is sequentially submitted by transfer means to a respective set of said operating device sets. The device thus operates on the submitted workpiece, thereby causing the relative movement. is operated synchronously. After each operation except the last, each workpiece is removed from the equipment set by the transfer means and submitted to the next operating equipment. During a cycle of operation on one workpiece by each of the above-mentioned devices,
Another n-1 processed products are transferred to the tran. sequentially submitted to the corresponding devices by the sphere means. The invention particularly relates to cans, e.g. metal cans, by squeezing the material to produce a semi-finished product in the shape of a cup and subjecting this cup to at least one, preferably a series of re-squeezing operations. applied to the continuous production of, such that said drawing operations as well as redrawing operations are carried out by corresponding ones of said plurality of devices in the form of tools, these tools being, by way of non-limiting example,
It is of the type forming part of the apparatus disclosed and claimed in applicant's co-pending patent application no. 19883/74.

According to a second aspect of the invention, a device of the above type comprises circular transfer means arranged for continuous synchronous relative movement between each set of movable devices and the transfer means, A manipulator is arranged to be actuated synchronously with said relative movement, and said transfer means is arranged to limit a continuous path of said workpieces to transfer each workpiece sequentially to said set of manipulators. The workpiece is repeatedly circulated and submitted to each operating device, an operation is performed by this device, and after each operation except the last operation, this workpiece is removed from the operating device set, and the workpiece is sent to the next operating device. and during a cycle of operation of the device for any one workpiece, the transfer means sequentially submits the other n-1 workpieces to the corresponding operating device.

Preferably, said transfer means includes a plurality of co-operating rotating turrets, the turrets being interconnected for rotation about their respective axes and such that said continuous passageway forms a series of circular arcs. A workpiece carrying element is provided on the outer periphery, and the turret includes at least one inlet turret for submitting the workpiece to the handling device and a removal turret for removing the workpiece from the handling device. , at least one transfer turret for transferring workpieces from said removal turret to said infeed turret for circulation to said set of handling equipment.

The turret axes of the transfer means are preferably parallel to each other.

In that case, in a preferred construction, said workpiece-carrying element is one of a plurality of recesses provided on the outer periphery of each turret, and the number, arrangement, and shape and size of each recess are controlled by When the recesses of the first turret sequentially arrive at corresponding positions on the outer periphery of the second turret during rotation of the turret, temporary pockets are formed by the recesses of the first turret and the corresponding recesses of the second turret. Allow shapes to be formed sequentially. In the case of a device having one processor turret and a plurality of turrets of the transfer means, the number of depressions on the outer periphery of said processor turret is twice the number of depressions on the outer periphery of each turret of the transfer means; In other types of devices,
All the turrets of the transfer means are provided with the same number of recesses as the outer peripheral recesses of the processing turret. According to a third aspect of the invention, a product manufactured by the process and apparatus of the invention is connected, the product preferably being a metal can. The present invention will be explained in detail below with reference to embodiments shown in the drawings.

Referring to FIG. 1, the equipment used in the process of manufacturing a series of metal container bodies, typically can bodies, includes a drawing/redrawing device having a refining etrelet 22, which The turret 22 is rotatable at a constant speed by means not shown in the figure.
It carries eight actuating devices 13-20 mounted on a pitch circle concentric with .

These actuating devices consist of four pairs of tool assemblies, one device being diametrically opposed to the other in each pair, so that these devices are divided into two identical groups 13-16 and 17-20. are formed respectively. Each tool assembly is
It includes a tool for carrying out the manufacturing operation of the container body as well as the means for holding and operating this tool, which will hereinafter be referred to simply as the tool. The tool 13 is a cutting tool or a drawing tool for forming a disc-shaped metal sheet material into a cup shape. Tool 14 is a first redrawing tool for elongating the cup by redrawing it. Tool 15 is a second re-drawing tool for further stretching the can half-finished product re-drawn by tool 14 to its final length. Further, the tool 16 is a fin removing tool for removing fins from the end of the semi-finished product that has been redrawn by the tool 15. Another group of tools, namely the drawing tool 17, the first
The re-extracting tool 18, the second re-extracting tool 19, and the fin removing tool 20 are the tools 13, 14, and 14 of the first group, respectively.
It is isomorphic to 15 and 16. The tools 13-20 are arranged to operate according to the operating cycle illustrated in FIG.

In this figure, time is shown on the ordinate, while length of stroke (travel perpendicular to the plane of FIG. 1) is shown on the abscissa. The actual operation is performed by each tool during the machining process, and the relative effective length of this machining process (i.e., the proportion of the total machining process in which machining is actually performed) is shown in the lower left corner of Figure 3. It is sometimes shown as a diagram. Furthermore, this third
The diagram will be explained. As will be explained below, a workpiece in the form of said blank is sequentially machined by tools 13, 18, 15 and 20 forming a first set of tools which carry out an operating cycle on this workpiece. Alternatively, the second tool set 17, 14, 19 and 16 are used to machine the second tool set. The apparatus includes recirculating transfer means in the form of three cooperating rotating turrets.

These turrets are interconnected (by means not shown) for rotation about mutually parallel respective axes. These turrets are feed turrets 1
0, removal turret 11 and transfer turret 1
It includes 2. As explained below, the transfer turret 12 removes the semi-finished can bodies and transfers them from the turret 11 to the sending retarde 10, and sequentially transfers the semi-finished products to the transfer turret 10.
It is recirculated after each operation except the last, and in this way the semi-finished product can be properly submitted to the tooling of the next operation. Each turret 10, 11, 12 is provided with four equally spaced work-carrying elements (indicated by numbers 1 to 4 in each turret) in the form of depressions or pockets in the outer circumferential surface. The turrets 10-12 are connected (by means not shown) to the machining turret 22 to effect continuous rotation of the turrets 10-12 synchronously with the rotation of the machining turret, and in this way, each tool set (13, 18, 15,
20; 17, 14, 19, 16) and transfer means 1
A continuous and synchronous relative movement between 0 and 12 is performed. As explained in more detail below, the transfer means operates as follows.

First, the feeder 10 sequentially submits workpieces in the form of blanks, drawn cups, redrawn cups, or double redrawn cups to a suitable tool set. That is, the respective tools 13 or 17, 18) for carrying out the machining on the workpiece are sequentially sent to the respective tools 19, 20 or 16. After the operation has been carried out, the removal turret 11 removes the article from the tool set, and after each operation except the last one (fin removal), the workpiece consists of a series of arcs shown in dark solid lines in FIG. It is recirculated along a continuous path (in FIG. 1, the arcuate path of the workpiece engaged by the tool of the processing etaret 22 is indicated by dark lines 21). In this way, the processed product is transferred to the feed turret 1 by the transfer turret 12.
0 and recirculated by being transferred to the inlet turret 1.
0 submits the workpiece to the next tool. Furthermore, during the operation cycle of a set of four tools on a workpiece,
For each tool not occupied by that workpiece, three other workpieces are sequentially submitted by the infeed turret 10. Driving means (not shown, but explained later) is provided for driving each of the tools 13-20 in synchronization with such relative movement between the transfer means 10-12 and the tool set. ing.

In the apparatus shown in FIG. 1, the inlet turret 10 and the unloader turret 11 are oriented at a precise predetermined angle This enables precise coordination of phase angles. The arrow on the substance 21 indicates the advancing direction of the semi-finished product. That is, the material is placed in pocket No. of the feeding turret 10.
1 and transported into the tool 13. After the cup forming operation is carried out by this tool 13, this cup is conveyed by the turret 22 and sent to the vicinity of the removal turret 11.
1 pocket no. 2 (by means not shown) and the workpiece is then discharged into pocket no. 2 of transfer tarret 12. Pot No. 2 of infeed turret 10 was picked up by No. Proceed to step 2, this turret 10
submits this workpiece to the first redrawing operation tool 18.
After the completion of this first redrawing operation, the tool 18 at a suitable moment places the machined cup in the pocket number of the turret.
3 and from there the transfer means enter the respective pockets No. 3 of j turrets 12 and 10. 3 into the second re-pulling operation tool 15 of the processing etaret. The cup is double re-squeezed with this tool 15, and this time it is pocket N.
O. 4, it is finally circulated by the transfer tarlet and fed into the tool 20 for the fining operation. In this tool, the flange formed during the second re-drawing step is trimmed to size (see FIG. 3). Finally, pocket No. inside the drawer turret 11. receives the finished can body and discharges it into a discharge chute (not shown). Each tool is equipped with a vacuum holding device (
(not shown), these vacuum holding devices have an attachment point A, where the can body is presented to each tool, and a removal point E, which is taken over by the removal turret 11.
and along the entire passageway 21.

Similarly, each pocket in each turret is also provided with a vacuum retaining device, which is selectively controlled by a suitable damping mechanism, thus allowing circulation of the semi-finished products and keeping the finished cans intact. The body can be removed and discharged from the turret 11 into the discharge chute. 4 mentioned above
In the case of the eight-tool system shown in FIG. 1 for carrying out the operation, two cans are completed, one by each tool set, for each revolution of the processing etaret 22. Transfer ateret 12 recirculates each semifinished product three times into processing ateret 22. The above explanation as well as the first
As is clear from the figure, when each turret of the first turret (11 or 12) reaches a corresponding position on the outer periphery of the second turret (12 or 10) during rotation of the turrets 10-12, The number, arrangement, shape and size of the circumferential recesses or pockets of these turrets 10-12 are selected such that the recesses and the corresponding recesses of the second turret define a temporary circular pocket shape. In addition, Pocket No. 12 of transfer attachment 12. l
is pocket No. of the removable turret 11. Note that it is invalid when adjacent to l. If it is necessary to perform more than four operations on a container, the apparatus shown in FIG. 1 can be modified as shown in FIG. 2, in which case each turret has eight It has pockets.

This structure provides greater operational flexibility and allows for a greater number of operations. In this case, tool 13
-20 perform the same function as the similarly numbered tools in FIG. 1, but in this case two sets of tools 13
-16 and 17-20, each can body is machined sequentially by tools 13, 14, 15, 16 or sequentially by tools 17, 18, 19, 20. be done. The material is 10 pockets of feeding turrets.
or 5 to the cutting tool 13 or 17. Circulation to the first redrawing tools 14, 18 is carried out by the respective pockets 2, 6 of the turret systems 10-12. Circulation to the second redrawing tools 15, 19 is carried out by pockets 3 and 7, respectively. The final circulation to the fin removal tools 16, 20 is also carried out by the respective pockets 4, 8. The finished can body is finally removed from the tools 16 and 20 by means of the respective pockets 5, 1 of the removal turret 11. As in the case of the redrawing brace which forms the object of the above-mentioned applicant's co-pending application no. It is important to meet the dynamic requirements of operation.

For this purpose, whether or not the invention is applied to this type of drawing press, the control cam that controls the sequential movement of each tool is designed to By maintaining the same level and height of the tools for all operations, the design can prevent impact between the working surface of each tool and the can body being machined. That is, the cam produces the same stroke for all tools, and in order to obtain the required height of the can, this tool stroke is determined by the tool that requires the longest stroke, in this case the first stroke. It must satisfy the strokes of the fin removal tools 16 and 20 in FIG. FIG. 3 illustrates the basic lime lifting requirements.

The mounting stroke (the stroke for introducing the can into the corresponding tool at each stage) must be equal to the height of the finished can plus a certain amount of mounting clearance, and the subsequent machining stroke must be equal to the height of the finished can It is clear that it must be equal to the height of the can body, or greater if the can body is not provided with a flange. Therefore, for clamping the semi-finished product, all tool heights are chosen such that they coincide with the point q (FIGS. 1 and 3) in the working cycle at which the tool speed is zero at the beginning of the machining process. In this way, said shocks will be avoided. More specifically, the method of operation of the apparatus shown in FIG. 1 is as follows.

An inlet turret 10 introduces one workpiece of the stock row into a cutting tool 13, which workpiece is held by vacuum action in a suitable stationary recess (not shown) in the moving part of the tool;
At the same time, the installation process occurs. When the workpiece reaches the stationary part of this tool 13, the movement of the tool stops, the workpiece is clamped without impact, and the ram of the tool begins to move. The cutting operation is performed at about A of the total machining stroke of the tool as shown in FIG. The rest of the trip is a play trip. After the circulation operation by the turret systems 10 to 12,
This cup is fed by the feed rate turret 10 into the stationary spigot of the first redrawing tool and is held in this position by vacuum action. Until the mouth of the cup reaches the punch sleeve of the redrawing tool 18, there is approximately an idle stroke of the installation stroke. When the bottom of the cup reaches the mandrel of the tool 18, the moving parts of the tool are stopped to avoid impact, and the bottom of the cup is tightened against the punch sleeve, where the first
The re-throttling operation is started from zero speed. In this working stroke, after the re-diaphragm operation is completed, there is an idle stroke.
In the next second re-squeezing operation and fin removal operation,
There is little or no play between the installation and machining strokes, but the start of each stroke starts from zero speed of the tool and is therefore shock-free. In this way, the operating characteristics of the aforesaid drawing/redrawing press described in the above-mentioned Japanese Patent Application No. 19883/74 are also retained in the present invention.

(See the aforementioned patent application for tools suitable for use in the present invention). A material feeder (not shown) is located near the infeed turret 10.

The feeder is typically driven by and within the infeed turret 10, with horizontal stock storage channels similar to those used for high speed can end feed, and suitable vacuum separation equipment. and an acceleration mechanism for feeding the material. The separating device draws materials from the stack and delivers them to a suitable feed position where the acceleration mechanism transfers them into the inlet turret 10. Referring to FIG. 4, this structure differs from the structure shown in FIG. 2 in that all eight tools 1 to 8 on the turret 22 are drawing tools, and are compatible with eight standard can diameters. have different diameters. The majority of open-top cans that are actually needed are in the size range 202-404 (i.e. 2A''-4
However, it is assumed that the apparatus in this example manufactures cans within a size range of 211 size (i.e., a minimum diameter of 2"). In the process shown in FIG. A material of suitable size is squeezed by any one of tools 1 to 8 having a maximum diameter smaller than the diameter of this material, and then successively by tools with successively decreasing standard can diameters. It will be squeezed again, but in this case, do the same as above,
Between each operation and the next operation, the turret system 10~
12 and the can body is removed by turret 11 when the desired final diameter is reached.

It will be appreciated that these turrets 22, 10, 11 and 12 can be configured such that the material fed by pocket 1 of infeed turret 10 is submitted to any of tools 1-8. The table below is a structural diagram. The second column shows the tool diameter in inches. No.? The column shows the standard size of each tool according to the manufacturer's usual symbol. No.? The columns indicate the % diameter reduction performed by each tool. This first column and the second? Column 4A shows an example of a 4-tool set, and column A shows an example of a 4-tool set.In this way, 22 such 4-tool sets can be used in an 8-tool turret.
By using a set, production can be doubled at a fixed cost. In order to manufacture a 211-size can body with a height that requires 7-inch diameter raw materials, the structure shown in FIG. No. 1 is provided with an insert member corresponding to a 7 inch diameter.

The material is this tool NO. Submit to l. This tool is already 7
It is equipped with a positioning ring that corresponds to the inch diameter, and can be narrowed down to the correct size. To finish the can, the semi-finished product is sequentially redrawn in tools 2 to 7 and final tool NO. 8
- Each time each operation of tools 1 to 7 is completed,
Circulated by turret systems 10-12.
The cans are removed from the tool 8 by means of a removal turret 11 and ejected from the apparatus. The above example is an extreme case where all tools participate in the production of the can. However, in other examples, a 300 size can body has a finished diameter of 2870'', but the height of the can can be shallow enough to require 600'' diameter stock. In such cases, the material
Pocket No. of Turret 10 with 6″ diameter insert
．． Sent into 2. Tool No. with a placement ring that has the same diameter as the material size. Send the material to 2. To manufacture this particular can, the semi-finished product must be placed in order, tool no. 3
, 4, 5, 6, NO. 7 and this tool NO. 7 and removed by the turret 11 and discharged from the device. In this case, tool NO. l and no
．． 8 is not used. Can bodies of all sizes indicated in the table above can be made from material of the appropriate diameter. Therefore,
This device exhibits the flexibility of being able to produce can bodies of various heights, but with standard diameters. In the device embodiment shown in FIG. 5, instead of the transfer arrester 12 of FIG. 1 (which is shown in dotted lines in FIG. 5 for comparison purposes), three transfer attributes 2
3, 24, and 25 are provided.

The operation of this device is similar to that illustrated in FIG. 1, but the device has a fixed size feed turret, removal turret, and transfer turret to extend the duration of the device's operating cycle. , during which time semi-finished products are "stored", so more products can always be advanced in this device.The operation of this structure is the first step.
What differs from the operation of the structure in the figure is that, as explained with reference to FIG. 1, in FIG.
5, 20 and 17, 14, 19, 16), whereas in the structure of FIG. 13, 14, 15, 16 and 17, 18, 19, 20
). As is clear from the foregoing description, the structure of the present invention allows continuous cycles of semi-finished products in a rotating turret 22 of the type with tools arranged sequentially on a curved path as in a conventional transfer press. It embodies the idea of creating and continuously circulating.

The transfer of the semi-finished product is carried out at a constant speed, controlled by precisely synchronized pockets in the turret and tool, and assisted by vacuum action, ensuring satisfactory position control throughout the entire machine cycle. It can be implemented. No intermittent actuation mechanism is required, except for the separation device described above which pulls the material from the stock pile. Additionally, although the operations carried out in the above examples are can body squeezing operations (i.e., cutting operations), re-drawing operations, and fin removal operations, the present invention is applicable to various other operations for manufacturing products other than can bodies. It is clear that continuous operations can be applied to implement the following types of workpieces.

For example, such operations can include painting, spraying, or otherwise treating the article. Also, when the invention is used in the packaging industry, these operations may include, for example, the filling and subsequent closing of cans or other containers.

[Brief explanation of the drawing]

FIG. 1 is an end view showing the operating principle of the first embodiment of the device of the present invention, FIG. 2 is a view similar to FIG. 1 showing the second embodiment of the device of the present invention, and FIG. Graph showing the stroke of the tool; FIG. 4 is an end view of a device similar to the device in FIG. 2 with different cycles; and FIG. 5 is an end view of a device similar to FIG. 1 but with a longer circulation path. It is. DESCRIPTION OF SYMBOLS 10... Feed turret, 11... Removal turret, 12... Transfer turret, 22... Processing turret, 1-8... Pocket, 13-20... Operating device (13, 17... Drawing tool, 14, 18... First re-drawing tool, 15, 19... Second re-drawing tool, 16
, 20...fin removal tool).

Claims (1)

[Claims] 1. A drawing device having a processing turret in which a plurality of actuating devices are arranged on a concentric pitch circle, and a circulation transfer device arranged so as to perform continuous synchronous relative movement with respect to the drawing device. , the circulation transfer device includes at least one inlet turret for submitting the workpiece to the actuation device and at least one removal turret for removing the workpiece from the actuation device;
at least one transfer turret for transferring workpieces to be circulated relative to the actuating device from the removal turret to the infeed turret, each turret forming a workpiece support on its outer circumferential surface. A machined product manufacturing apparatus, characterized in that the processing turret cooperates with the processing turret to define a series of arc-shaped workpiece traveling paths.