JP3894149B2 - Work storage magazine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a work storage magazine used for transporting a work such as an electronic component having a lead frame.
[0002]
[Prior art]
FIG. 6 shows a schematic diagram of what is conventionally used as the workpiece storage magazine J1. 6A is a front view of the workpiece storage magazine J1, and FIG. 6B is a partially transparent side view of the workpiece storage magazine J1.
[0003]
The workpiece storage magazine J1 stores a plurality of lead frames. For example, when performing a process of mounting a semiconductor chip on the lead frame, a process of applying a resin for protecting a semiconductor chip, a process of performing a resin mold, and the like. It is used to transport a plurality of lead frames.
[0004]
As shown in FIGS. 6A and 6B, the work storage magazine J1 has a cylindrical shape with a rectangular cross section having a hollow portion J2. The inner wall surface of the hollow portion J2 is provided with a plurality of slits J3 formed at equal intervals. The plurality of slits J3 are formed from a storage port (inlet of the hollow portion J2) J4 of the work storage magazine J1, and are formed in a direction perpendicular to one surface constituting the storage port J4 of the work storage magazine J1. A plate-like lead frame is inserted into each of the plurality of slits J3, and is carried to each process by the work storage magazine J1.
[0005]
[Problems to be solved by the invention]
As shown in FIG. 6 (a), the conventional workpiece storage magazine J1 is provided with a plate J5 serving as a stopper on the surface facing one surface serving as the storage port J4, and the lead frame is a predetermined one of the workpiece storage magazine J1. It is designed to be held in position.
[0006]
When the workpiece storage magazine J1 having such a configuration is used, the workpiece storage magazine J1 in which the lead frame before processing is stored and the workpiece storage in which the lead frame after processing is stored in performing the processing in each process. The magazine J1 is arranged to face. Then, the lead frames are taken out one by one from the workpiece storage magazine J1 in which the lead frames before processing are stored, subjected to predetermined processing, and then stored in the other workpiece storage magazine J1.
[0007]
For this reason, as shown in FIG. 7, when, for example, six products are produced with one lead frame J6, in the work storage magazine J1 in which the lead frame J6 before processing is stored in the process A, FIG. ), Although the products {circle around (1)} to {circle around (6)} are arranged in order from the storage opening J4, in the workpiece storage magazine J1 after processing, from the storage opening J4 to It will be arranged in (1). When the process proceeds to the next step B, as shown in FIG. 7 (b), the items arranged in order from (6) to (1) from the storage port J4 are stored in the processed workpiece. In the magazine J1, the magazines J1 are arranged in order (1) to (6) from the storage opening J4.
[0008]
For this reason, first-in first-out, in which the lead frame is inserted in the same direction and taken out in the same direction between each process, cannot be performed. In such a case, for example, even if a problem occurs in some process during the production of the product (3), the product (3) is positioned third from the storage port J4 of the work storage magazine J1. The problem arises that it cannot be determined whether it is in the fourth position or not.
[0009]
Further, in order to prevent the lead frame J6 from falling, a cover may be attached to the storage port J4. In such a case, before the work storage magazine J1 is introduced into the apparatus for performing each process, the cover is attached. Must be removed from the work storage magazine J1, and an interlock function for confirming whether or not the lid is removed must be provided on the apparatus side. Further, when removing the workpiece storage magazine J1 from the apparatus, the user forgets to attach the lid and sometimes drops the lead frame J6 from the workpiece storage magazine J1.
[0010]
An object of this invention is to provide the workpiece | work storage magazine which can carry out the first-in first-out of a workpiece | work by conveyance between each process in view of the said point. It is another object of the present invention to provide a work storage magazine that does not need to have a lid removal confirmation function.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, in the work storage magazine for storing the plate-shaped work (50) and transporting the work when performing a predetermined process on the work, (3a), a cylindrical housing (3) having a bottom surface portion (3b) and a side surface portion (3c), and forming a hollow portion (2) thereby, and among the housings, an inlet (4 ) And a shielding member (10) attached to the outlet (5). A plurality of slits (7) extending from the inlet to the outlet of the hollow portion are formed on the surface constituting the inner wall surface of the hollow portion of the side surface portion of the housing. A plurality of recesses (10a) corresponding to the slits are formed, and the shielding member has a plurality of recesses that coincide with the plurality of slits when the housing is installed in an apparatus that performs a predetermined process. The position is such that a workpiece can be inserted into the slit, and when the housing is lifted, the plurality of recesses are displaced from the plurality of slits and are configured to cover the plurality of slits. Specifically, the shielding member is inserted into a groove (8) formed in the side surface portion. This groove is formed at both ends of the side surface portion protruding from the top surface portion and the bottom surface portion.
[0012]
As described above, according to the work storage magazine of the present invention, when the housing is installed in an apparatus that performs a predetermined process, the plurality of recesses coincide with the plurality of slits, and the shielding member is placed in the plurality of slits. When the casing is lifted, the plurality of recesses are displaced from the plurality of slits, and the shielding member is positioned to cover the plurality of slits. For this reason, it can be set as the structure which does not need to provide the removal function of a cover in the apparatus side like the case where the cover was fitted to the workpiece | work storage magazine.
[0014]
In the invention according to claim 2 , the shielding member is slidable in the groove, and the housing is provided with a stopper (6) for restricting the sliding of the shielding member. In this case, the shielding member slides by its own weight, and the sliding is regulated by the stopper.
[0015]
Thus, the shielding member can move to each position shown in claim 1 by sliding in the groove by its own weight. In this case, as shown in claim 3 , when the shielding member is provided with the concavo-convex portion (10b) and the casing is lifted, the convex portion of the concavo-convex portion protrudes from the bottom portion, and the casing is attached to the device. When installed inside, the projecting portion is pushed by the installation surface, and can be configured to fit within the bottom surface.
[0016]
In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
FIG. 1 shows a schematic configuration of a work storage magazine 1 according to an embodiment of the present invention. FIG. 1A is a front view of the work storage magazine 1, and FIG. 1B is a partially transparent side view of the work storage magazine 1.
[0018]
As shown in FIG. 1, the workpiece storage magazine 1 is used in such a form that the vertical direction on the paper surface coincides with the top-to-bottom direction. The workpiece storage magazine 1 includes a casing 3 having a hollow section 2 and a cylindrical shape having a rectangular cross section. The housing 3 is formed by assembling an upper surface portion 3a, a bottom surface portion 3b, and a side surface portion 3c, and one end side of the housing 3 is a storage inlet (inlet for the hollow portion 2) 4 for inserting a lead frame. Thus, the other end becomes a storage outlet (exit of the hollow portion 2) 5 for taking out the lead frame.
[0019]
The upper surface portion 3a and the bottom surface portion 3b of the housing 3 are respectively disposed above and below the housing 3, and of the upper surface portion 3a and the bottom surface portion 3b, the storage inlet 4 and the storage outlet 5 of the housing 3 are provided. The screw | thread 6 is attached to the located both ends.
[0020]
On the surface constituting the inner wall surface of the hollow portion 2 of the side surface portion 3c of the housing 3, as shown in the transmissive portions of FIG. 1A and FIG. A slit 7 is provided. The plurality of slits 7 extend across the entire area from the storage inlet 4 to the storage outlet 5 of the housing 3, and are formed in a direction substantially perpendicular to the surfaces of the housing 3 that form the storage inlet 4 and the storage outlet 5. Yes. A plate-like lead frame is inserted into each of the plurality of slits 7.
[0021]
The length of the side surface portion 3c in the direction parallel to the plurality of slits 7 is longer than the length of the upper surface portion 3a and the bottom surface portion 3b in the same direction, and both ends of the side surface portion 3c are the upper surface portion by the length. It protrudes from 3a and the bottom face part 3b. Grooves 8 that are perpendicular to the plurality of slits 7 are formed on the inner wall of the side surface portion 3c at portions protruding from the top surface portion 3a and the bottom surface portion 3b. The groove 8 extends over the entire area of the side surface portion 3c from the upper surface portion 3a to the bottom surface portion 3b.
[0022]
The counterbore 9 formed on the outer surface of the side surface portion 3c is used for positioning when the workpiece storage magazine 1 is conveyed by a robot (not shown). The counterbore 9 is provided with a convex provided on the robot side. The workpiece storage magazine 1 is positioned by the part (or robot finger) entering.
[0023]
The work storage magazine 1 is further provided with a plate-shaped shielding member 10. A front view and a side view of the shielding member 10 are shown in FIGS.
[0024]
The shielding member 10 is inserted into the groove 8 of each of the storage inlet 4 and the storage outlet 5 of the housing 3, and the housing 3 is stored as shown in FIGS. 1 (a) and 2 (a). A frame shape corresponding to the inlet 4 and the storage outlet 5 is formed. For this reason, the plate thickness of the shielding member 10 is set to be equal to or slightly smaller than the width of the groove 8 formed in the housing 3.
[0025]
In the shielding member 10, a plurality of concave portions 10 a are formed at equal intervals on the inner peripheral portion of the side facing the side surface portion 3 c of the housing 3 to have an uneven shape. The interval between the recesses 10a is substantially the same as the interval between the plurality of slits 7 formed in the side surface portion 3a. Moreover, the uneven | corrugated | grooved part 10b is formed also in the edge | side corresponding to the upper surface part 3a and the bottom face part 3b of the housing | casing 3 among the shielding members 10. FIG. As shown in FIG. 1 (a), the concave and convex portion 10 b is formed such that when the shielding member 10 is inserted into the groove 8 of the housing 3, the concave portion is more hollow than the screw 6. The width of the shielding member 10 on the concave portion side in the vertical direction (vertical direction) is narrower than the size of the side surface portion 3c in the same direction, and the vertical direction of the shielding member 10 on the convex portion side. The width in the direction (vertical direction) is configured to be approximately equal to the size in the same direction of the side surface portion 3c.
[0026]
The shielding member 10 having such a configuration is inserted into the groove 8 before the screw 6 is attached to the housing 3, and the screw 6 attached to the top surface portion 3a and the bottom surface portion 3b of the housing 3 after the insertion is used as a stopper. It is held in the housing 3. Therefore, the shielding member 10 can slide in the groove 8 formed in the housing 3, but when the shield member 10 comes into contact with the screw 6 serving as a stopper, further sliding is restricted. The work storage magazine 1 is configured as described above.
[0027]
Next, a method for conveying the lead frame 50 using the workpiece storage magazine 1 will be described. FIG. 3 (a) shows a state when the workpiece storage magazine 1 is installed at an installation location in an apparatus for performing a predetermined process for performing each process, for example, a flat place (hereinafter referred to as a flat surface). FIG. 3B shows a state where the workpiece storage magazine 1 is lifted from a flat surface when it is transported by a robot or the like. FIG. 4 is a schematic diagram of the lead frame 50 stored in the workpiece storage magazine 1. 4A shows that the lead frame 50 has not been subjected to each step yet, FIG. 4B shows that the lead frame 50 has undergone a part of each step, FIG. 4C. These show what performed each process with respect to the lead frame 50. FIG.
[0028]
As shown in FIG. 3A, when the workpiece storage magazine 1 is installed on a flat surface, the convex portion side of the concave and convex portion 10b in the shielding member 10 is in contact with the flat surface. For this reason, the sliding of the shielding member 10 in the groove 8 is restricted by the flat surface. Thereby, the plurality of concave portions 10a of the shielding member 10 and the plurality of slits 7 formed in the side surface portion 3c of the housing 3 coincide with each other, and the lead frame 50 shown in FIG. It becomes.
[0029]
On the other hand, as shown in FIG. 3B, when the workpiece storage magazine 1 is lifted from the flat surface, there is no restriction of sliding in the groove 8 of the shielding member 10 by the flat surface, and the shielding member 10 is lowered by its own weight. Move to. However, in the shielding member 10, the concave portion side of the concavo-convex portion 10 b is in contact with the screw 6, so that sliding within the groove 8 is restricted. Accordingly, the plurality of recesses 10 a of the shielding member 10 are displaced from the plurality of slits 7 formed in the side surface portion 3 c of the housing 3, and the plurality of slits 7 are hidden by the shielding member 10. Therefore, the lead frame 50 inserted into the plurality of slits 7 does not fall from the work storage magazine 1 while the robot is transporting the work storage magazine 1.
[0030]
In this way, when the lead frame 50 is conveyed by the workpiece storage magazine 1 so as not to drop and, for example, the process A is performed on the lead frame 50, the lead frame 50 is extracted from the workpiece storage magazine 1, and the process A is performed. After the execution, the lead frame 50 is again inserted into the workpiece storage magazine 1 and conveyed toward the apparatus for performing the next step B in the workpiece storage magazine 1. In this way, for example, by performing a semiconductor chip mounting process, a wire bonding process, and the like, the semiconductor chip 51 is mounted on the parts of the lead frame 50 as shown in FIG. At 52, each semiconductor chip 51 is electrically connected to a desired part. Then, after the lead frame 50 is inserted into the workpiece storage magazine 1 again, the lead frame 50 is divided into each product together with the sealing resin 53 as shown in FIG. The conveyance of the lead frame 50 by the storage magazine 1 is completed.
[0031]
Thus, according to the workpiece storage magazine 1 in the present embodiment, the shielding member 10 is attached to the workpiece storage magazine 1, and when the lead frame 50 is taken in and out of the workpiece storage magazine 1, the shielding member 10 has a plurality of slits 7. The shield member 10 shields the plurality of slits 7 when the lead frame 50 is stored in the workpiece storage magazine 1 and then transported. Then, when the work storage magazine 1 is installed on a flat surface, the plurality of slits 7 are not shielded automatically, and when the work storage magazine 1 is lifted from the flat surface, the plurality of slits 1 are shielded. To be done automatically. For this reason, like the case where the lid | cover was fitted to the workpiece | work storage magazine 1, it can be set as the structure which does not need to provide the removal function of a lid | cover in the apparatus side.
[0032]
Further, in the work storage magazine 1 shown in the present embodiment, the casing 3 is formed in a cylindrical shape, and both the storage inlet 4 and the storage outlet 5 are provided, and the shielding member 10 is provided at both the storage inlet 4 and the storage outlet 5. The configuration is arranged. For this reason, as shown in FIG. 4, when, for example, six products are produced with one lead frame 50, the workpiece storage magazine 1 in which the lead frame 50 before processing is stored in the process A is shown in FIG. As shown in a), products {circle around (1)} to {circle around (6)} that are arranged in order from the storage outlet 5 enter the products {circle around (1)} to {circle around (6)} again from the storage outlet 5 when entering from the storage inlet 4. Will be lined up. For this reason, when proceeding to the next step B, as shown in FIG. 5 (b), the products (1) to (6) are arranged in order from the storage outlet 5, and in the subsequent steps, Order is maintained.
[0033]
Therefore, it is possible to perform first-in first-out, in which the lead frame 50 is inserted in the same direction and taken out in the same direction between the processes. As a result, for example, even if a problem occurs in some process during the production of the product (3), the position of the product (3) is determined as the third position from the storage outlet 5. It is also possible.
[0034]
(Other embodiments)
In the said embodiment, the shielding member 10 is made to perform the automatic movement by providing the uneven | corrugated | grooved part 10b in the shielding member 10. FIG. The shape of the concavo-convex portion 10b is an example, and other shapes can be used as long as the shape has the above functions.
[Brief description of the drawings]
1A and 1B are views showing a work storage magazine 1 according to a first embodiment of the present invention, in which FIG. 1A is a front view of the work storage magazine 1 and FIG. 1B is a side view of the work storage magazine 1;
2A and 2B are diagrams illustrating a shielding member 10 in FIG. 1, in which FIG. 2A is a front view of the shielding member 10 and FIG. 2B is a side view of the shielding member 10;
3A is a diagram showing a state when the workpiece storage magazine 1 is installed on a flat surface, and FIG. 3B is a diagram showing a state when the workpiece storage magazine 1 is lifted from the flat surface. is there.
4A is a diagram when each process is not performed on the lead frame 50, FIG. 4B is a diagram when a part of each process is performed on the lead frame 50, and FIG. These are figures when all the processes are performed on the lead frame 50. FIG.
5 is a diagram showing the order of products when the lead frame 50 is taken in and out using the work storage magazine 1 shown in FIG. 1. FIG.
6A and 6B are diagrams illustrating a conventional workpiece storage magazine J1, in which FIG. 6A is a front view of the workpiece storage magazine J1, and FIG. 6B is a side view of the workpiece storage magazine J1.
7 is a diagram showing the order of products when a lead frame is taken in and out using the workpiece storage magazine J1 shown in FIG. 6. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Work storage magazine, 2 ... Hollow part, 3 ... Housing, 3a ... Upper surface part,
3b ... bottom part, 3c ... side part, 4 ... storage inlet, 5 ... storage outlet, 6 ... screw,
7 ... Slits, 8 ... Groove, 10 ... Shielding member, 10a ... Recess,
10b: Uneven portion, 50: Lead frame.

Claims (3)

In a workpiece storage magazine that stores a plate-shaped workpiece (50) and conveys the workpiece when a predetermined process is performed on the workpiece,
A cylindrical housing (3) having an upper surface portion (3a), a bottom surface portion (3b), and a side surface portion (3c), thereby forming a hollow portion (2);
A shielding member (10) attached to the inlet (4) and the outlet (5) of the hollow portion of the housing;
A plurality of slits (7) extending from the entrance to the exit of the hollow portion are formed on the surface constituting the inner wall surface of the hollow portion of the side surface portion of the housing,
A plurality of recesses (10a) corresponding to the plurality of slits are formed in the shielding member,
The shielding member is positioned such that the plurality of recesses coincide with the plurality of slits and the workpiece can be inserted into the plurality of slits when the casing is installed in an apparatus that performs the predetermined process. The plurality of recesses are displaced from the plurality of slits when the casing is lifted, and are configured to cover the plurality of slits .
A groove (8) that is substantially perpendicular to the plurality of slits is formed in the side surface portion of the housing, and the shielding member is inserted into the groove formed in the side surface portion,
Further, the length in the direction in which the plurality of slits in the side surface portion is extended is set to be longer than the length in the same direction in the top surface portion and the bottom surface portion, and the hollow portion of the side surface portion A workpiece storage magazine characterized in that both ends positioned at the inlet and the outlet protrude from the upper surface portion and the bottom surface portion, and the groove is formed in the protruding portion . The shielding member is slidable in the groove,
The casing is provided with a stopper (6) for restricting the sliding of the shielding member. When the casing is lifted, the shielding member slides by its own weight, and the sliding is The workpiece storage magazine according to claim 1 , wherein the workpiece storage magazine is regulated by a stopper. The shielding member is provided with a concavo-convex part (10b), and when the casing is lifted, the convex part of the concavo-convex part protrudes from the bottom surface part, and the casing is put into the apparatus. 3. The workpiece storage magazine according to claim 2 , wherein, when installed, the protruding portion is pushed by an installation surface so as to be accommodated in the bottom surface portion.

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