JPH0516009A - Chamfering device of molding - Google Patents

Abstract

PURPOSE:To obtain a chamfering device of molding capable of making mechanical chamfering process of the molding and removing a chamfering process by manual operation, and forming shavings in string-like shape instead of dust shape to be prevented from scattering, so as to prevent environment worsening. CONSTITUTION:A movable body (a track frame 11) is run by an operation of a running drive mechanism so as to force contact member 28, 28' of a chip attached body, to follow the peripheral portion 62 of a molding (a resin bumper 60) and at the same time, a chip 26 is pushed to the peripheral portion 62 of the molding with a contact load by means of a pushing mechanism 33, so as to perform a chamfering process on the peripheral portion 62.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering device for molded articles such as resin bumpers mixed with glass fibers.

[0002]

2. Description of the Related Art Resin bumper 60 containing glass fibers
Is manufactured by press molding with a molding press 70 shown in FIG. A large number of burrs 61 are formed on the peripheral portion 62 of the resin bumper 60 manufactured in this way, and it is necessary to remove the burrs 61 in order to obtain a product.

Conventionally, deburring, that is, chamfering, of the resin bumper 60 has been performed manually by an operator.

That is, the resin bumper 60 is fixed on a workbench, and an operator uses a cutting tool to scrape the peripheral portion 62 of the resin bumper 60 for chamfering.

[0005]

However, in such a conventional manual chamfering, the work efficiency is poor, and when the shavings fly up in the form of dust and adhere to the human body, Since the glass fiber in the shavings pierces the skin and significantly deteriorates the working environment, it has been urgently desired to mechanize the chamfering process.

The present invention has been made in view of the above circumstances, and an object thereof is to be able to mechanically chamfer a molded product and eliminate the chamfering process manually. Further, it is an object of the present invention to provide a chamfering device for a molded product that can prevent the deterioration of the environment because the shavings do not become dust but become a string and do not scatter.

Another object of the present invention is to:
Even if the width of the molded product is different, the tip can always be pressed against the peripheral part of the molded product with a constant load, and it is possible to chamfer the molded product with different width and height, The object of the present invention is to provide a chamfering device for a molded product capable of producing a stable load and obtaining a stable chamfering value.

[0008]

In order to achieve one of the above objects, the present invention provides a movable body which is provided in the main body of the apparatus and can reciprocate in one direction, and a movable body which is provided in the main body of the apparatus. A traveling drive mechanism that reciprocates, a movable body, and a pair of holding bodies that are movable in a direction perpendicular to the traveling direction of the movable body,
The chip holder is provided on each holder and is moved up and down by the operation of the elevating mechanism, and has a vertical play, and the tip holder is provided on the chip holder so that the chip follows the peripheral portion of the molded product when the movable body is running. The copying mechanism, the chip used for chamfering the peripheral part of the molded product, and the movable body, which holds the supporting member toward the center of the main body of the device, applies a constant load to the peripheral part of the molded product. And a chip pressing mechanism for pressing with.

Further, in order to achieve the above-mentioned other objects,
According to the present invention, in the chamfering device for a molded product according to claim 1, the pressing mechanism is provided with a pulley inside and outside the movable body, and a wire whose one end is locked to the holding body is hooked on the pulley. After that, a weight is provided at the other end of the wire.

[0010]

According to the structure of claim 1, by moving the movable body by the operation of the traveling drive mechanism, the copying mechanism provided in the chip holder brings the chip into contact with the peripheral portion of the molded product, and the pressing mechanism causes the chip to move. Can be pressed against the peripheral portion of the molded product with a constant load to chamfer the peripheral portion.

As described above, the chamfering of the molded product can be performed mechanically, and the chamfering by hand can be eliminated. Moreover, the chamfering is a machining process, and because the chip is pressed against the peripheral part of the molded product while applying a constant load along with copying, the shavings do not become dust but become a string shape and do not scatter, which deteriorates the environment. It will prevent. Further, according to the configuration of claim 2, even if the width of the molded product is different, the chip can be constantly pressed against the peripheral portion of the molded product with a constant load,
Enables chamfering of molded products with different widths. Moreover,
The weight can be exchanged for another weight,
Stable chamfering value can be obtained with a constant load.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a chamfering device for molded articles according to the present invention.

In FIG. 1, reference numeral 1 is an apparatus main body,
The apparatus main body 1 includes a machine base 1a, and the machine base 1a
A frame 5 is provided on the upper part of the frame via four posts 4. A molded product fixing jig 2 is fixed to the upper part of the machine base 1a, and the molded product fixing jig 2 is provided with a plurality of clampers-3. Two rails 6 are attached to the lower surface 5a of the frame 5 along the left-right direction in FIG.

A cam floor guide 7 is fixed to the front and rear surface portions 5b and 5c of the frame 5 to regulate the amount of movement of the holder 13 toward the center of the apparatus main body 1. As shown in FIGS. 15 and 16, the cam floor guide 7 is provided with a guide portion 8 formed at a right angle to the mounting portion 7a. The guide portion 8 includes a wide portion 8a, a narrow portion 8b, and a wide portion 8a. It is composed of an intermediate transition portion 8c.

A track rail 11 is provided on the rail 6 so as to be movable in the axial direction of the rail 6.

That is, the holding body 13 is provided with a track rail 11 which is a movable body.
Is attached to the rail 6 via a track rail suspension mechanism 12. That is, the track rail suspension mechanism 12 is held by the rail 6 so as to be movable in the axial direction of the rail 6, and the track rail 11 is also railed.
It is held in a direction perpendicular to the axis of the rule 6.

The holding body 13 has a cylinder, which is an elevating mechanism.
14 is fixed, and the piston rod 15 of this cylinder 14 penetrates the holder 13 and extends below it. A guide rod 16 is attached to the lower end of the piston rod 15. This guide rod 1
A stopper 17 composed of a nut member is attached to the lower end portion of 6.

A bracket 18 is fixed to the holding body 13 so as to be located below the holding body 13.
A liner bearing 19 is attached to 8. The linear bearing 19 movably holds a rod 20, and a knife holder -21 is attached to the lower end of the rod 20, and a guide hole 21a is formed in the knife holder -21. The guide rod 16 penetrates the guide hole 21a.

Therefore, the knife holder 21 has a structure in which it can be lowered by its own weight between the guide rods 16 and raised by the cylinder 14. If necessary, knife holder 21
It is also possible to add a weight to and adjust the downward force.

The tip holder 22 is attached to the knife holder 21.
Are fixed by fixing means such as bolts.

The chip mounting body 22 has a plate shape as shown in FIGS. 4 to 8, and a notch 23 is formed on one side of the lower surface of the chip mounting body 22.
A chip mounting concave portion 24 is formed on the front surface of the device 1. The chip mounting concave portion 24 has a quadrilateral shape with a part cut away so that a regular quadrilateral chip can be mounted. And
The bottom surface 24a of the chip mounting recess 24 has a chip mounting body 2
4 is inclined by α degrees with respect to the left end surface 24c and by β degrees with respect to the front surface portion 24b, and screw holes 25 are formed in the bottom surface portion 24a of the chip mounting recess 24.

The tip 26 is a regular quadrilateral block body, and the four sides are formed as blade portions 27, and a hole 28 is formed at the center thereof.
b is formed.

The tip 26 is inserted into the tip mounting recess 24 and is mounted by a mounting bolt 28a. In this case, half of the blade portion 27 of one piece of the tip 26 projects from the tip mounting recess 24, and this projecting portion becomes the actual cutting blade portion 27a.

A contact member 28 is fixed to the lower surface of the chip mounting body 22. As shown in FIGS. 9 to 11, the contact member 28 has a contact portion 30 formed at a right angle to the mounting portion 29. The contact portion 30 has an arc shape. A contact member 28 'is fixed to the notch 23 of the chip mounting body 22. The abutment member 28 'is attached to the lower surface of the attachment portion 29' as shown in FIGS.
′ Is formed. This contact portion 30 'is formed in an arc shape.

A supporting member 31 is fixedly provided at the end of the holding body 13, and a cam follower is provided on the front side of the supporting member 31.
32 is pivotally supported, and the cam follower 32 comes into contact with the cam surface of the cam follower guide 7. The cam follower guide 7 and the cam follower 32 constitute a copying mechanism 80.

The track frame 11 is provided with a pressing mechanism 33. The pressing mechanism 33 includes a pulley 34 axially supported at the center of the track rail 11 and the track rail 11.
And a pulley 36 pivotally supported on a bracket 35 at the outer end of the wire.
7 is hung, and the inner end of the wire 37 is the holding body 1
3 is attached to an engaging portion 38 provided at the inner end of the wire 3, and a weight 39 is attached to the other end of the wire 37. The weight of the weight 39 pulls the wire 37. The holder 13 is pulled toward the center of the track rail 11, and the cam follower 32 is pressed against the cam surface of the cam follower guide 7.
Further, the blade portion 27a of the chip 26 is pressed against the peripheral portion 62 of the resin bumper 60, which is a molded product, with a constant load.

A chamfering mechanism 10 is attached to the frame 5.
The traveling drive mechanism 41 is provided.

The traveling drive mechanism 41 is provided with a drive motor 42 arranged on the left side of the frame 5, and a drive pulley 44 is attached to an output shaft 43 of the drive motor 42. It is installed. Brackets 45 and 46 are provided at the left and right ends of the frame 5, intermediate pulleys 47 and 48 are coaxially supported by the left bracket 45, and brackets 45 and 46 are provided at the right bracket 46. A pulley 49 is pivotally supported. And
An endless belt 5 on the drive pulley 44 and the intermediate pulley 47.
0 is applied, and wire 51 is provided between pulleys 48 and 49.
And the both ends of the wire-51 are chamfering mechanism 1
It is locked to the 0 side of the track rail 11.

Next, the operation will be described.

The molded product is a resin bumper 60 as shown in FIGS. 21 and 22, and the resin bumper 60 is formed by press molding with glass fibers mixed therein. A burr 61 is formed on the surface (see FIG. 23).

The chamfering mechanism 10 is in the position shown in FIG. 1, that is, in the start position, and the cam follower 32 is in contact with the cam surface of the wide portion 8a of the cam follower guide 7. Therefore, the tip 26 is provided in the main body of the apparatus. It is located at the farthest position in the front-rear direction from the center O of 1. In this case, the wire 37 is pulled by the weight 39, and the holding body 13 is moved toward the center side by the pulling of the wire 37, so that the cam follower-3.
2 is in contact with the cam follower guide 7.

Further, the cylinder 14 is actuated and the piston rod 15 rises to stop the guide rod 16.
17 raises the tip holder 21 and raises the tip 26. This work set position is shown in FIG.

In this state, the resin bumper 60 is placed on the portion A of the molded product fixing jig 2 and fixed by the clamper-3.

Next, the cylinder 14 is operated to lower the piston rod 15 and lower the tip holder 21. In this state, as shown in FIG. 18, the chip 26 is located laterally to the right end of the resin bumper 60.

Next, the traveling drive mechanism 41 is operated. That is, by driving the drive motor 42,
The pulley 44 is rotated, the intermediate pulley 47 is rotated via the belt 50, and the pulley 48 is rotated to cause the wire 51 to travel in the clockwise direction in FIG. For this reason, the chamfering mechanism 10 moves to the left, and the cam follower 32 moves from the wide portion 8a of the cam follower guide 7 through the transition portion 8c to the tip of the cam follower 32 until it contacts the resin bumper 60 as shown in FIG. It contacts the cam surface of the guide 7 (shown by the solid line).

That is, in the state where the holding body 13 is pulled toward the center of the apparatus body 1 by the wire 37 pulled by the weight 39, the cam follower 32 passes from the wide portion 8a to the narrow portion 8c and the narrow portion 8b. The chip 26 of the chip mounting body 22 bites into the peripheral portion 62 at the right end of the resin bumper 60 on the way to. The bite of the tip 26 is a half portion of the blade portion 27 of the tip 26.

Further, the chamfering mechanism 10 travels by the operation of the traveling drive mechanism 41, and the abutting member 28 fixed to the chip mounting body 22 causes the abutting member 28 to surround the resin bumper 60.
The burr 61 is removed by the chamfering of the peripheral portion 62 of the resin bumper 60 by the blade portion 27 of the tip 26 by the contact member 28 ′ simultaneously copying the upper surface of the edge surface of the resin bumper 60.

The chamfering mechanism 10 reaches the left side, and the tip 26
When the blade portion 27 of the cylinder chamfers the peripheral portion 62 of the resin bumper 60, the cylinder 14 is operated to operate the piston rod 1
Raise 5 Then, the contact member 28 fixed to the chip mounting body 22 separates from the peripheral portion 62 of the resin bumper 60, and thus the holding body 13 is pulled toward the center of the apparatus body 1 by the wire 37 drawn by the weight 39. . However, when the cam follower 32 contacts the narrow portion 8b of the cam follower guide 7, the retracting of the holding body 13 is stopped.
In this state, the traveling drive mechanism 41 is operated to operate the chamfering mechanism 1.
When 0 is moved to the right, the cam follower 32 will move to the position shown in FIG.
As shown in, the cam follower guide 7 returns to the start position while coming into contact with the wide portion 8a from the narrow portion 8b through the transition portion 8c (shown by a broken line).

In this state, the fixing of the molded product fixing jig 2 by the clamper-3 is released, and the chamfered resin bumper-60 is taken out.

When the blade portion 27 of the tip 26 is worn by the above chamfering process, the mounting bolt 28a is removed, the tip 26 is pulled out from the tip mounting recess 24, and the new blade portion 27 is placed at the cutting position. Recess 24
And attach with the mounting bolt 28a. In this case, four blades 27 are formed on the tip 26, and one blade 27 is used for each half, so that eight blades can be replaced by one tip 26.

Further, in the above-described embodiment, the peripheral portion 62 of the resin bumper 60 can be mechanically chamfered, and the chamfering work by man can be eliminated.
Moreover, the chamfering is a machining process, and a constant load is applied to the chip 26 to copy the chip 26 around the peripheral portion 6 of the resin bumper 60.
Since the shavings are pressed against 2, the shavings do not become dust but become a string and do not scatter, which prevents environmental deterioration.

Further, the pressing mechanism 33 is provided with pulleys 34 and 36 inside and outside the movable body 13, and one end thereof is held by the holding body 13.
Since the wire 37 locked to the wire is hung on the pulleys 34 and 36, and the weight 39 is provided at the other end of the wire 37, it is always constant even if the width of the resin bumper 60 is different. The chip 26 can be pressed against the peripheral portion 62 of the resin bumper 60 by the load of, and chamfering of the resin bumper 60 having different widths becomes possible. Moreover, the weight 39 can be exchanged for another weight, and a constant load can be obtained to obtain a stable chamfered numerical value.

A suction mechanism may be provided in the machine base 1a of the apparatus main body 1 to suck the shavings and collect them at a predetermined place to prevent scattering.

[0045]

As described above, the chamfering device for molded products according to the present invention is provided with a movable body which is provided in the apparatus body and can reciprocate in one direction, and a movable body which is provided in the apparatus body and reciprocates the movable body. A traveling drive mechanism, a pair of holders movable to the movable body in a direction at right angles to the traveling direction of the movable body, and a vertical movement as well as an up-and-down movement provided by the operation of an elevating mechanism provided on each holder. A tip holder having play in the end; a copying mechanism provided on the tip holder to allow the tip to follow the peripheral portion of the molded product when the movable body travels; and a chip used for chamfering the peripheral portion of the molded product. , Equipped with a chip pressing mechanism that is provided on the movable body and urges the holding body toward the center side of the device body to press the chip against the peripheral portion of the molded product with a constant load, so that the traveling drive mechanism operates to move the movable body. By letting It is possible to chamfer the peripheral part of the molded product by pressing the chip against the peripheral part of the molded product with a constant load along with the contact member provided on the mounting pair. it can.

As described above, the chamfering of the molded product can be performed mechanically, and the chamfering by hand can be eliminated. Moreover, the chamfering is a machining process, and because the chip is pressed against the peripheral part of the molded product while applying a constant load along with copying, the shavings do not become dust but become a string shape and do not scatter, which deteriorates the environment. It will prevent.

According to the present invention, in the chamfering device for a molded article according to claim 1, the pressing mechanism is provided with a pulley inside and outside the movable body, and one end of the wire is locked to the holding body.
Since the wire is attached to the other end of the wire after it is hung on the pulley, the tip can always be pressed against the peripheral part of the molded product with a constant load even if the width of the molded product is different. This enables chamfering of molded products with different widths. Moreover, the weight can be exchanged for another weight,
Stable chamfering value can be obtained with a constant load.

[Brief description of drawings]

FIG. 1 is a front view of a chamfering device for a molded product according to the present invention.

FIG. 2 is a sectional view taken along line BB of FIG.

FIG. 3 is an enlarged view of a portion indicated by C in FIG.

FIG. 4 is a plan view of a chip mounting body.

FIG. 5 is a front view of the chip mounting body.

FIG. 6 is a bottom view of the chip mounting body.

FIG. 7 is a side view of the chip mounting body.

8 is a cross-sectional view taken along the line DD of FIG.

FIG. 9 is a front view of a contact member.

FIG. 10 is a side view of the contact member.

FIG. 11 is a bottom view of the contact member.

FIG. 12 is a front view of the contact member.

FIG. 13 is a side view of the contact member.

FIG. 14 is a bottom view of the surface contact member.

FIG. 15 is a plan view of a cam follower guide.

FIG. 16 is a left side view of the cam follower guide.

FIG. 17 is an explanatory diagram of a standby position of the chamfering mechanism.

FIG. 18 is an explanatory diagram of a start position of a chip.

FIG. 19 is an explanatory diagram showing a relationship between a cam follower and a cam follower guide.

FIG. 20 is an explanatory view of a molding press at the time of molding a resin bumper.

FIG. 21 is a perspective view of a resin bumper.

FIG. 22 is a front view of the resin bumper.

FIG. 23 is a cross-sectional view of the resin bumper with a part thereof omitted.

[Explanation of symbols]

1 device body 13 Holder 21 Knife holder 26 chips 33 Pressing mechanism 34 pulley 36 pulleys 39 dead weight 41 Travel drive mechanism 60 Resin bumper (molded product) 80 Copying mechanism

Claims (2)

[Claims] 1. A movable body provided in a main body of the apparatus and capable of reciprocating in one direction, a traveling drive mechanism provided in the main body of the apparatus to reciprocate the movable body, and the movable body in the traveling direction of the movable body. A pair of holders that can move in a direction perpendicular to each other, and a chip holder that is provided on each holder and that is moved up and down by the operation of an elevating mechanism, and that has a vertical play.
And a copying mechanism provided on the chip holder to allow the chip to follow the peripheral part of the molded product when the movable body is running, a chip used for chamfering the peripheral part of the molded product, and A chamfering device for a molded product, comprising: a chip pressing mechanism for urging the holding body toward the center of the main body of the device to press the chip against the peripheral portion of the molded product with a constant load. 2. A pressing mechanism is provided with pulleys inside and outside of a movable body, a wire whose one end is locked to a holder is hung on the pulley, and a weight is provided at the other end of the wire. The chamfering device for a molded article according to claim 1, which has the above-mentioned configuration.