JPH06170853A - Resin molding equipment - Google Patents

Abstract

PURPOSE:To obtain a resin molding equipment in which a mold can be cleaned surely and efficiently and a cycle time can be shortened. CONSTITUTION:A molding equipment comprises a support body 15 retractably reciprocating between opened molds 10, 26; a drive mechanism for reciprocating the support body 15; brushes 18, 20 mounted on the support body 15 so as to protrude toward the parting faces of the molds 10, 26; a pressing and abutting mechanism for pressing and abutting the brushes 18, 20 against the parting faces when the brushes 18, 20 clean the parting faces inside the molds 10, 26; and suction holes 22, 24 opened in the support body 15 adjacent to the brushes 18, 20 and connected to a vacuum device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin molding device.

[0002]

2. Description of the Related Art In resin molding, resin burrs and resin debris generated between an upper mold and a lower mold remain on a parting surface, a cavity, a runner portion, etc. even after taking out a molded product.
As a result, resin debris remaining in the molded product during the molding of the next cycle mixes in to form a defective product, or it is pinched between the upper mold and the lower mold to form a mark, or the gate is clogged. Cause the failure of. In order to prevent these obstacles, the conventional resin molding apparatus is provided with an independent cleaning mechanism. The conventional cleaning mechanism opens the mold after completion of molding, and after the completion of taking out the molded product, the brush and the nozzle connected to the vacuum device are driven along the parting surface of the mold by an independent driving mechanism, Resin debris and the like adhering to the parting surface and cavities are removed.

[0003]

However, the resin molding apparatus having the above-mentioned conventional cleaning mechanism has the following problems. The mold cleaning process is performed as a process independent of other processes by an independent mechanism. Therefore, there is a problem that the cycle time of the apparatus cannot be shortened because other steps cannot be performed during the cleaning. Therefore, an object of the present invention is to provide a resin molding apparatus capable of reliably and efficiently cleaning a mold and shortening the cycle time.

[0004]

In order to achieve the above object, the present invention has the following constitution. That is, the present invention is a support body that reciprocates between molds that have been opened and reciprocally movable.
A drive mechanism for reciprocating the support, a brush attached to the support so as to project toward the parting surface of the mold, and a brush for cleaning the parting surface in the mold by the brush. A pressing mechanism that presses the brush against the parting surface, and a suction hole that is adjacent to the brush and that opens to the support and that is connected to the vacuum device are provided.

Further, the support is provided so as to be movable back and forth between molds that open vertically, and the brushes are used to clean the upper mold and the lower mold of the mold, respectively, in a parting surface direction of the upper mold, The production efficiency can be further improved by being attached to the upper and lower sides of the support so as to project in the direction of the parting surface of the lower die.

Further, by providing a swinging mechanism for swinging the brush in a plane parallel to the parting surface of the die, the resin debris can be surely peeled off from the parting surface and the like to improve the cleaning efficiency. You can

[0007]

[Operation] The operation will be described. According to the resin molding apparatus of the present invention, when the molded product is in the mold, the metal mold is opened through the support without pressing the brush against the parting surface and interfering with the molded product. It can be passed between molds and passed through. Then, when the mold cleaning step is performed, the brush is pressed against the parting surface by the pressing mechanism, and the resin scraps are reliably separated from the parting surface and the like by the brushing of the brush. The resin debris thus reliably peeled off can be reliably and efficiently removed by the suction holes. As a result, if the brush provided with this pressing mechanism and the suction hole are interlocked with the molded product take-out device, etc., the molded product is supplied to the mold immediately after the molded product molded by the mold is taken out. Immediately before the cleaning, the parting surface and the like can be reliably and efficiently cleaned.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. First, the configuration will be described. FIG. 1 shows a plan view of the resin molding apparatus of this embodiment. In the figure, reference numeral 10 denotes a lower mold of a mold, and the lead frames 14 ... Are inserted into the cavities 12 ... Molded product after resin sealing (lead frame 1
4) is taken out from the lower mold 10 after the mold is opened. It is the unloader 16 that is a molded product take-out section that takes out this molded product. The unloader 16 is attached to a support body 15 that reciprocates between molds that have been opened and closed so that the mold can be opened and closed.
The take-out position A where the molded product is taken out from the lower mold 10 between 0
And a release position B where the molded product is released to move to the next process, the reciprocating movement is possible in the direction of arrow C.

FIG. 2 shows a plan view of the support 15 to which the unloader 16 is attached. The unloader 16 is provided on its lower surface with an appropriate gripping mechanism (not shown) such as a chuck claw for gripping a molded product at the take-out position A. A brush 18 forming a cleaning mechanism is attached to the front end of the support 15 adjacent to the unloader 16. The brush 18 is provided to brush the upper parting surface. Although not shown in FIG. 2, the unloader 1
The same brush is also provided on the lower surface side of 6 to brush the parting surface of the lower mold 10.
Further, reference numeral 22 is a suction hole constituting a cleaning mechanism, which is connected to a vacuum device (not shown) through a communication path, opens at the front end of the support member 15 adjacent to the brush 18, and forms an upper mold part. The resin debris attached to the ring surface is removed by suction. The same suction hole is also opened on the lower surface side of the support body 15 to suck and remove resin dust and the like adhering to the parting surface of the lower mold 10.

The positional relationship between the suction hole 22 provided in the support 15 and the brush 18 and the unloader 16 is such that the suction hole 22 extends from the front end side of the support 15 which is inserted between the molds toward the rear end. , The brush 18, and the unloader 16 are arranged in this order.

FIG. 3 shows a front view of a cleaning mechanism composed of a suction hole and a brush. In FIG. 3, the cleaning mechanism includes brushes 18 and 20 of the upper mold 26 and the lower mold 10 when the unloader 16 reciprocates between the parting surfaces of the opened upper mold 26 and the lower mold 10. Brush each parting surface. In order to exert the brushing effect of the brushes 18 and 20, a swinging mechanism for continuously swinging the brushes 18 and 20 in the left-right direction is provided.

The swing mechanism will be described. Brush 1
Reference numerals 8 and 20 are provided on the upper or lower side of movable blocks 36 and 38, which are movable on guide rods 32 and 34 provided between a front wall 28 and a rear wall 30, via connecting rods 40 ... ing. The moving blocks 36 and 38 have links 42 and 44 (not shown in FIG. 4) at the rear ends thereof with shafts 46 and 48 at their tips.
Is pivoted on. On the other hand, the rear ends of the links 42 and 44 are axially attached to shafts 50 and 52 inside the unloader 16, respectively. Gears 54 and 56 are eccentrically fitted to the shafts 50 and 52, respectively. Reference numeral 58 is also a gear, and meshes with the gears 54 and 56. The gear 58 is rotated by a motor 60. Therefore,
When the motor 60 rotates, the gear 58 rotates, and the eccentric gears 54 and 56 meshing with the gear 58 also rotate. To do.

Brushes 18, 20 and upper mold 26 and lower mold 10
Between the parting surfaces of the unloader 1 as shown in FIG.
Because of the reciprocating motion of 6, clearance is provided at the top and bottom. Therefore, the free ends of the brushes 18, 20 do not reach the parting surface. Therefore, a pressing mechanism for pressing the free ends of the brushes 18 and 20 against the parting surface is provided. The pressing mechanism will be described with reference to FIGS. 3 and 4.

The bases 62 and 64 of the brushes 18 and 20 are connected rods 40, ...
Is fixed to the front end of the connecting rod 40, and a spring 68 is mounted between the flange 66 of the other end and the moving blocks 36 and 38 to move the bases 62 and 64. It urges in the direction of 36 and 38. Therefore, the brushes 18 and 20 are constantly urged to be drawn into the unloader 16 by the springs 68 ... A cylinder device 70 is provided in order to push the brushes 18 and 20 to the outside (vertical direction) of the unloader 16 against the urging force of the springs 68 ... During cleaning. The lower end of the cylinder device is fixed to the base 64, and the upper end of the rod 72 of the cylinder device 70 abuts the lower surface of the base 62 via steel balls 74. Since the base portion 62 of the steel balls 74 ... Is urged downward by the spring 68, the steel balls 74 are always kept in contact with the receiving plate 76 at the upper end of the rod 72. In order to bring the brushes 18 and 20 close to the parting surfaces of the upper mold 26 and the lower mold 10, the cylinder device 70 is driven to extend the rod 72. Then the bases 62 and 6
4 moves up and down in opposition to the urging force of the springs 68 to separate from each other, and the free ends of the brushes 18 and 20 contact the parting surfaces of the upper mold 26 and the lower mold 10.

Next, a drive mechanism for reciprocating the support 15 to which the suction hole 22, brush 18 and unloader 16 are attached will be described with reference to FIGS. Reference numeral 82 denotes a rail, which is a guide for reciprocating the support 15 to which the suction hole 22, the brush 18 and the unloader 16 are attached in the direction of arrow C. The rail 82 is formed so as to extend in the reciprocating direction of the support body 15, and is fixed to a support member 80 provided on the main body 78. The rails 82 are provided on both sides of the support 15 (one is not shown). A ridge portion 84 is formed on the inner surface of the rail 82. A connecting portion 86 is disposed between the rail 82 and the support body 15, and the connecting portion 8
On the outer side surface of the rail 6, there is provided a fitting portion 90 in which a concave groove 88 that can be fitted into the protruding portion 84 of the rail 82 is formed. By connecting the support body 15 to the connecting portion 86 to the fitting portion 90 to the protruding portion 84, the support body 15 can reciprocate in the direction of arrow C along the rail 82. As a driving means for reciprocating the support body 15, the support body 15 is driven by an unillustrated motor or cylinder device via an appropriate transmission mechanism. The unloader 16 can be moved up and down by driving the cylinder device 94, and can be moved down when the molded product is taken out and released.

Next, the operation of this resin molding apparatus will be described. When the molding of the molded product is completed, the upper mold 26 and the lower mold 10 are opened. Then, the support body 15 to which the suction hole 22, the brush 18, and the unloader 16 which are in the release position B in advance are attached
Moves along the rail 82 so that the unloader 16 is located at the take-out position A so as to take out the molded product by a driving means (not shown).

Then, when the unloader 16 takes out the molded product from the mold and then returns to the release position B, the cylinder device 7
0 is driven so that the bases 62 and 64 of the brushes 18 and 20 move in the vertical direction so as to be separated from each other, and the brushes 18 and 20 are moved.
The free ends of are pressed against the parting surfaces of the upper mold 26 and the lower mold 10. In this state, when the motor 60 is rotated, the brushes 18 and 20 continuously swing in the front-rear direction. Brushes 18 and 20 pressed against this parting surface
The resin scraps and the like on the parting surface are removed by the swinging of. Further, when a vacuum device (not shown) is operated, not only the resin debris on the parting surface but also the resin debris in the cavity are absorbed and removed by the suction holes 22 and 24.

That is, when the molded product is in the mold, the brushes 18 and 20 are not pressed against the parting surface and do not interfere with the molded product in the mold, and the upper mold 26 and the lower mold 10 Pass between With the cylinder device 70 of the pressing mechanism, the brushes 18 and 20 can be pressed against the parting surfaces of the upper mold 26 and the lower mold 10 only when cleaning the parting surface. With this, it is possible to favorably take out the molded product and clean the parting surface while the support body 15 reciprocates, and the molding cycle time can be shortened. Since the suction holes 22 and 24 are opened to the front end side of the support members 15 from the mounting positions of the brushes 18 and 20, if the cleaning is performed when the support member 15 is retracted, the resin separated by the brushes 18 and 20 is removed. The dust can be reliably and efficiently removed by the suction holes 22 and 24. It is also possible to perform the cleaning operation while the support 15 is moving in both the reciprocating directions. Although various embodiments of the present invention have been described above, the present invention is not limited to the above embodiments,
Of course, many modifications can be made without departing from the spirit of the invention.

[0019]

According to the resin molding apparatus of the present invention, when the molded product is in the mold, the brush is not pressed against the parting surface and does not interfere with the molded product, and the brush is interposed. It can be made to enter and pass between the opened molds.
Then, when the mold cleaning step is performed, the brush is pressed against the parting surface by the pressing mechanism, and the resin debris reliably peeled off by the brushing can be reliably and efficiently removed by the suction holes. As a result, if the brush provided with the pressing mechanism and the suction hole are linked with the molded product take-out device, the molded product is supplied to the mold immediately after the molded product molded by the mold is taken out. Immediately before the cleaning, the parting surface and the like can be reliably and efficiently cleaned. As a result, the molding cycle time can be shortened and the production efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a resin molding apparatus according to the present invention.

FIG. 2 is a plan view of an unloader.

FIG. 3 is a front view showing a cleaning mechanism.

FIG. 4 is a side view of FIG.

FIG. 5 is a side view showing a drive mechanism of the unloader.

6 is a front view of FIG.

[Explanation of symbols]

 10 Lower Die 14 Lead Frame 15 Support 16 Unloader 18 Brush 20 Brush 22 Suction Hole 24 Suction Hole 26 Upper Die 70 Cylinder Device 82 Rail

Claims (3)

[Claims] 1. A support body that reciprocally moves between molds opened and closed, a drive mechanism that reciprocates the support body, and a support body that can project in the parting surface direction of the mold. A mounted brush; a pressing mechanism that presses the brush against the parting surface when the brush cleans the parting surface in the mold; a vacuum device that is adjacent to the brush and opens into the support; And a suction hole connected to the resin molding device. 2. The support is provided so as to be able to move back and forth between molds that open up and down, and the brushes are used to clean the upper mold and the lower mold, respectively, in a parting surface direction of the upper mold, The resin molding apparatus according to claim 1, wherein the resin molding apparatus is attached to the upper and lower sides of the support body so as to project in the direction of the parting surface of the lower die. 3. The resin molding apparatus according to claim 1, further comprising a swing mechanism for swinging the brush in a plane parallel to a parting surface of the mold.