JPH0629817U - Resin molding die cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a resin molding die cleaner capable of reliably removing resin residue from a cavity of a resin molding die. A cleaner for removing resin residue on a resin molding die provided with a cavity for resin molding on a mating surface of a pair of resin molding dies 1 and 2 is provided with a dust collecting port 15 and a dust collecting port 15 of the dust collecting port 15. The air blow device 16 is provided inside. Further, the base 15 is provided with a rotatable brush 12 for scraping off the remaining residue. A front skirt 20 is arranged at the front of the cleaner, a movable skirt 21 is arranged at the rear, and side skirts are arranged at the side. By using the air blower 16 to scatter the resin residue inside the cavity with air, the resin residue can be completely removed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a resin molding die cleaner of thermosetting synthetic resin.

[0002]

[Prior art and its problems]

 2. Description of the Related Art Conventionally, a transfer molding apparatus, which is a type of resin molding die, is generally used to mold electronic parts such as IC chips with resin. FIG. 4 shows a conventionally used resin molding die. In FIG. 4, a plurality of cavity groups 4 having four molding cavities 3 as a group are provided on the mating surfaces of a pair of upper and lower molds 1 and 2, and the upper mold 1 of the upper and lower molds 1 and 2 A filling chamber 6 for a raw material tablet 5 of thermosetting synthetic resin is provided in each of the four cavity groups.

Further, as shown in FIG. 5, the lower mold 2 communicates with the filling chamber 6, and also communicates with a plurality of cavities 3 corresponding to the filling chamber 6 via a runner 7. Then, the cylinder 9 that reciprocates toward the upper mold 1 is press-fitted into the filling chamber 6 toward the distribution chamber 8 to melt the raw material tablet 5 in the filling chamber 6, and then the low viscosity state is obtained. Then, it is pressed into the respective cavities 3 from the distribution chamber 8 through the runners 7 to be solidified, and the respective cavities 3 are molded into a predetermined shape. After that, when the molding is completed, the upper and lower molds are separated, the resin-molded electronic component is taken out from the cavity 3, and the next resin molding is performed.

By the way, when the resin molding is completed, hardened synthetic resin residue remains on the surfaces of the cavity 3, the runner 7, etc. For this reason, when the next molding is performed, the resin mold molding does not conform to the standard due to the residual resin, which causes a defective product. Therefore, as shown in FIG. 3, conventionally, a resin residue suction cleaner 10 is inserted between the separated upper mold 1 and lower mold 2 to remove the residual residue. The suction cleaner 10 includes a dust collecting port 11 having a predetermined suction length and a plurality of brushes 12. Denoted at 13 is a resin debris take-out portion that communicates with the dust collecting port, and the plurality of brushes 12 are attached to a base 14 forming the resin debris take-out portion 13.

Using the cleaner 10 having such a structure, the resin dust on the front side of the cleaner is sucked by the dust collecting port 11, and the brush 12 on the rear side removes the resin dust adhering to the mold surface. . However, in such a conventional cleaner, the bristles of the brush 12 do not reach the inside of the cavity, and resin residue is likely to remain in the cavity. Furthermore, the problem remains that the resin scraps scraped off by the brush are not sucked and are easily scattered.

[0006]

[Problems to be solved by the device]

 In view of the above problems, the present invention is to provide a cleaner capable of reliably removing resin debris from the cavity of a resin molding die and improving the ability to remove resin debris.

[0007]

[Means for Solving the Problems]

 The present invention provides a cleaner for removing residual resin residue of a resin molding die that has a resin molding cavity on a mating surface of a pair of molds. Then, a brush for removing resin residue is provided. Further, a skirt for preventing resin residue scattering is fixedly provided on the front end and side surfaces of the cleaner, and a movable skirt for preventing resin residue scattering is provided at the rear end of the cleaner to prevent the resin residue from scattering to the outside.

[0008]

【Example】

 1 and 2 are a sectional view and a perspective view of an essential part of an embodiment of the cleaner of the present invention. In FIGS. 1 and 2, 1 and 2 are an upper die and a lower die similar to the conventional example. The cleaner for removing the resin residue on the upper mold 1 and the lower mold 2 is configured as follows. The cleaner is provided with a dust collecting port 15 for sucking residual dust in a vacuum, an air blowing device 16 provided in the inner space of the dust collecting port 15 and arranged in parallel vertically, and a residual dust removing passage 17 communicating with the dust collecting port 15. A compressed air supply unit 18 communicating with the air blower 16, a casing 19 to which the dust collecting port 15 is attached, a plurality of brushes fixed to the upper and lower surfaces of the casing 19, for example, a plurality of circular rotary brushes 12 It consists of The tip of the air blower 16 may be set with an arbitrary angle, or a mechanism capable of arbitrarily changing the angle may be provided.

Further, a front skirt 20 is fixed to the dust collecting port wall in front of the cleaner, and further, in the rear of the cleaner, the cleaner is kept stopped at the rear ends of the upper mold 1 and the lower mold 2. A skirt 21 is provided after allowing the na to move. Further, a side skirt (not shown) is fixed on the left and right sides of the cleaner.

The cleaner thus configured removes the resin residue attached to the upper mold 1 and the lower mold 2 as follows. First, when the resin sealing is completed as in the conventional case, the upper mold 1 and the lower mold 2 are separated and the resin molded product in the cavity is taken out. Then, the cleaner of the present invention is inserted between the upper mold 1 and the lower mold 2. While moving the cleaner forward, air is blown inside the cavity with compressed air sent from the air blower 16, and resin dust is scattered by the air blow to be sucked from the dust collection port 15 and discharged from the take-out unit 17. At this time, at the same time, the brush 12 is operated to scrape off the attached resin residue. After advancing to near the front ends of the upper mold 1 and the lower mold 2, the above operation is performed while retreating and separating from between the upper mold 1 and the lower mold 2.

When removing the resin residue, the front and rear skirts 20 and 21, and side skirts (not shown) surround the mold. When the cleaner advances, the rear skirt 21 is stopped at the rear end of the mold, and as the cleaner advances, the rear skirt 21 gradually surrounds the mold surface together with the front skirt and the side skirt. When the cleaner retreats, the rear skirt is stopped to retreat the mold until the cleaner retracts near the rear end of the mold, so the side skirt always surrounds the mold surface during the resin residue removal operation. . Therefore, it is possible to prevent the resin residue from being scattered to the outside by the operation of the air blow device and the brush.

[0012]

[Effect of device]

 According to the present invention, since the air blower is provided, it is possible to completely remove the resin residue by scattering the resin residue inside the cavity with air. Further, since the air blow device is provided in the space where the resin dregs are sucked, that is, inside the dust collecting port, it is possible to prevent the resin dregs from scattering due to the air blow on the dust collecting port wall. In addition, since the skirts are arranged on the front and rear sides and the side surfaces of the cleaner, it is possible to reliably prevent scattering of resin debris to the outside. In addition, the present invention as a whole can improve the cleaner performance by the air blow and the dust collecting function.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an air cleaner of the present invention.

FIG. 2 is a perspective view of an essential part of the air cleaner of the present invention.

FIG. 3 is a sectional view of a main part of a conventional air cleaner.

FIG. 4 is a vertical sectional front view of a mold.

FIG. 5 is a plan view of the inner surface of the mold.

[Explanation of symbols]

 1 Upper mold 2 Lower mold 12 Brush 15 Dust collection port 16 Air blow device 20 Front skirt 21 Rear skirt

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H01L 21/56 T 8617-4M // B29L 31:34 4F

Claims (3)

[Scope of utility model registration request] 1. A cleaner for removing residual resin residue of a resin molding die having a resin molding cavity on a mating surface of a pair of molds, wherein an air blow device is provided in a dust collecting space. Resin molding die cleaner. 2. The resin molding die cleaner according to claim 1, wherein a brush for removing resin debris is provided adjacent to the dust collecting port. 3. A cleaner skirt for preventing resin residue dispersion is fixedly provided on the front end and left and right side surfaces of the cleaner, and a movable skirt for preventing resin residue dispersion is provided at the rear end of the cleaner.
The resin mold die cleaner according to claim 1, wherein the mold cavity surface is always surrounded by a skirt when the cleaner is activated.