JPH062688U - Resin supply unit for sealing semiconductor devices - Google Patents

Abstract

(57) [Abstract] [Purpose] When using a resin with a diameter-to-length ratio of 1: 1 in a resin feeder unit with parts feeder,
Only the resin in the direction in which the cylindrical flat part goes up and down is sequentially sent out from the parts feeder. [Structure] A guide block 7 is provided at a position where the tablet feeding rail portion of the parts feeder 16 is in contact with the tablet 2 by 1 to 2 mm in both width and height directions of the upper and lower guide rails 1 and 5. 7
Can move in and out through the elastic body 8 in the width direction, and can rotate about the support shaft 9 in the height direction. [Effect] Among the tablets in the three types of directions that are fed out from the guide portion entrance of the parts feeder, only the tablets whose flat portions are above and below can be sequentially fed out, and the tablets in the other two directions can be returned into the parts feeder.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a resin supply unit for sealing a semiconductor device, and more particularly to a resin supply unit for an automatic resin sealing device.

[0002]

[Prior art]

 As shown in FIG. 3, a conventional semiconductor device sealing resin supply unit includes a hopper 17 for intermittently supplying a tablet 2, a parts feeder 16 for sequentially feeding the tablets 2 supplied from the hopper 17, and a parts feeder 16. An alignment supply unit 18 that aligns the normally fed 4 to 8 (4 in this figure) tablets, and a push-up unit 19 that pushes up and delivers the aligned tablets 2 to a transport unit (not shown). It consists of

As shown in FIGS. 4 and 5, a lower guide rail 1 that guides the bottom surface and one side surface of the tablet 2 and a tablet upper surface and one upper side surface near the exit of the parts feeder 16 are guided. An upper guide rail 5 is provided, and in the middle portion of the lower guide rail 1, L ₂ is several mm longer than the tablet length L ₁ in the feeding direction 3 of the tablet ₂ , and with respect to the feeding direction 3. A cutout portion 4 is provided in the right angle direction at a dimension of L _{3 which} is 1/2 or more of the diameter D 2 of the tablet 2. 15 is a flat part.

[0004]

[Problems to be solved by the device]

 In this conventional semiconductor device encapsulating resin supply unit, the upper and lower guide rails of the tablet near the exit of the parts feeder only regulate the outer shape (diameter, length) of the tablet at the entrance. When a tablet with a length ratio of 1: 1 is used, the state of the tablets 2, 2, ″, 2 ″ ″ to be fed out is such that the flat portion is in the vertical direction, the feeding direction and the direction perpendicular to the feeding direction. As it is (Figs. 6 (a), (b), and (c)), a delivery error occurs when pushing up the tablet from the alignment unit in the next process and delivering it to the transfer unit to the sealing die, or Even if it was delivered successfully, there was a problem that the operating rate of the equipment decreased, such as an error in the injection into the sealing mold. For this reason, a notch is provided in the middle of the lower guide rail, but only the flat part of the tablet in the feeding direction (Fig. 6 (c)) can be removed, so it is not possible to improve the operating rate of the device. It was difficult.

An object of the present invention is to provide a resin supply unit for encapsulating a semiconductor device in which the operating rate of the device is improved.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, a semiconductor device sealing resin supply unit according to the present invention has a lever, a guide block, and an elastic body, and is provided with a cylindrical semiconductor device sealing resin supplied to a hopper. It is a tablet supply unit that feeds out sequentially by the parts feeder, aligns a plurality of them, and then supplies them to the sealing mold all at once.The lever is located on the tablet delivery rail part near the exit of the parts feeder and rotates around the spindle. It operates, and the guide block is provided at a position that contacts the tablet vertically and horizontally from the tablet end surface in a minute range. The elastic body supports the guide block at the tip of the lever. Is.

[0007]

[Action]

 Of the tablets in the three different directions that are fed out from the guide entrance of the parts feeder, only the tablets with flat top and bottom can be sequentially fed out, and the other two-direction tablets can be returned into the parts feeder.

[0008]

【Example】

 Next, the present invention will be described with reference to the drawings. FIG. 1A is a plan view showing a resin supply unit according to an embodiment of the present invention, and FIG. 1B is a sectional view thereof.

In the figure, the lower guide rail 1 is the same as the conventional one, and the feeding direction 3 of the tablet 2 has a dimension L _{2 which} is several mm longer than the length L ₁ of the tablet 2 and in the feeding direction 3. On the other hand, in the direction at right angles, the notch 4 is provided by the L ₃ dimension which is 1/2 or more of the diameter D of the tablet 2.

Further, the upper guide rail 5 is provided with a notch portion 6 at a position corresponding to the notch portion 4 of the lower guide rail 1, and a guide block 7 is provided in the middle of the notch portion 6 with respect to the tablet 2. It is fixed to a lever 10 which is rotatable about a support shaft 9 via an elastic body 8 so as to come to a position where it comes into contact with each other in the width and height directions by 1 to 2 mm.

A roller 11 is fixed to the lower end of the lever 10, and the lever 10 is constantly pressed against a stopper 13 by a spring 12 having a tensile force larger than the elastic force of the elastic body 8.

First, as shown in FIG. 2 (a), the guide block 7 is pushed outward by the side surface of the tablet 2 ′ with respect to the tablet 2 ′ having the flat portion 14 sent out in the vertical direction, and the elastic body 8 is elastic. Deform. At this time, since the tablet 2'is supported by the flat portion 15 of the lower guide rail 1, it is sequentially delivered.

Next, with respect to the tablet 2 ″ fed out so that the flat portion 14 is in the feeding direction, the tablet 2 ″ is lowered by the notch portion 4 of the guide rail 1 as shown in FIG. 2C. And is returned to the inside of the parts feeder 16.

Further, with respect to the tablet 2 ′ ″ whose flat portion 14 is sent out at a right angle to the feed direction, the guide block 7 is pushed upward by the tablet 2 ′ ″ as shown in FIG. Since the roller 10 is rotated upward about the support shaft 9, the tablet 11 is pushed by the roller 11 at the lower end of the lever 10 and is disengaged from the flat portion 15 of the lower guide rail 1 and falls downward. Returned to 16

[0015]

[Effect of device]

 As described above, according to the present invention, the guide block is provided in the middle portion of the tablet delivery rail at a position where it comes into contact with the tablet in the width and height directions of the rail by 1 to 2 mm, and is elastic in the width direction. It can be moved in and out through the body, and in the height direction, it can be moved in the rotation direction around the spindle provided on the lever that fixes the guide block and the elastic body. The tablets to be removed can be reliably removed on the way except for those with a flat part in the vertical direction, and it has the effect of improving the operating rate of the device by preventing delivery and input errors of the tablets.

[Brief description of drawings]

FIG. 1A is a plan view showing an embodiment of the present invention,
(B) is the same sectional view.

2 (a), (b) and (c) are operation explanatory views showing an embodiment of the present invention.

FIG. 3 is a perspective view showing a conventional resin supply unit.

FIG. 4 is a plan view showing a conventional example.

FIG. 5 is a sectional view showing an operating state of a conventional example.

6 (a), (b) and (c) are explanatory views showing the flow direction of the tablet.

[Explanation of symbols]

 1 Lower guide rail 2 Tablet 4, 6 Notch 5 Upper guide rail 7 Guide block 8 Elastic body 10 Lever 11 Roller 12 Spring 16 Parts feeder 17 Hopper 18 Alignment supply unit

Claims (1)

[Scope of utility model registration request] 1. A molding die having a lever, a guide block, and an elastic body, and sequentially feeding a cylindrical semiconductor device sealing resin supplied to a hopper by a parts feeder and aligning a plurality of the resin. It is a tablet supply unit that supplies all at once to the tablet feeder, and the lever is arranged on the tablet delivery rail part near the outlet of the parts feeder and rotates around the support shaft.The guide block moves vertically and horizontally from the tablet end face. A resin supply unit for sealing a semiconductor device, characterized in that the elastic body supports a guide block at the tip of the lever, the elastic body being provided at a position where it comes into contact with the tablet in a minute range.