JPH0158003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a deburring device for polymer molded bodies.

(Prior Art) In the technique of injecting a synthetic polymer into a mold and molding it, the polymer molded product taken out from the mold has burrs. This is because the mold has a mating surface, and the polymer that flows into the mating surface hardens and forms burrs.

Further, depending on the molded product, burrs may be actively formed. For example, when molding polyurethane foam, the gap between the mating surfaces of the molds may be made somewhat larger to allow the air to escape from the mold.

As shown in FIGS. 14 and 15, the core bar 102 is set in an insert mold (not shown),
By injecting foaming polyurethane into the mold and taking out the solidified polymer molded body from the mold, a steering wheel (hereinafter simply referred to as a ring) 100 in which a core metal 102 is covered with an exterior material 101 is obtained. It will be done.

At this time, burrs 103 are generated on the inner and outer circumferential sides of the ring 100. In addition, molten polymer is usually injected into the mold through a polymer injection passage called a gate, so when the mold is cooled, the solidified polymer molding ( (hereinafter referred to as gate solidified material) 104 is also ring 10
It is formed in conjunction with 0.

Since the burr 103 is unnecessary for the ring 100, it is usually cut and removed from the ring 100. Of course, the gate solidified material 104 is also removed in the same manner.

Conventionally, deburring work for removing the burr 103 has been carried out manually.

(Problems to be solved by the invention) However, with manual deburring methods, the scraped marks may not be uniformly clean, or parts of the product other than the burr may be scraped off, resulting in defective products. In addition to this problem, there was also the problem of low work efficiency.

Therefore, by attaching a cutter to the rotating shaft of the motor,
One possible method is to have a robot operate the motor and force the cutter against the burr-formed portion of the polymer molded article to scrape off the burr.

However, if you try this method as is,
Although it is possible to remove the burr by cutting, there is a problem in that the burr is removed too much and the polymer structure is removed, or the burr is left uncut, reducing the quality of the product.

Furthermore, since soft polymer molded objects and foams such as polyurethane and rubber are prone to mold distortion, the surface of the molded object actually has unevenness within a range of variation, and the cutter is forced to follow the unevenness. If you do not move it properly, the above problem will become more obvious.

Therefore, it has not been possible to put deburring to practical use using mechanical means that merely rotates the blade.

The present inventor has arrived at the present invention as a result of intensive research to develop a mechanical deburring device that can relieve the manual work of deburring and also provide a clean finished product from which burrs have been removed.

Therefore, the first object of the present invention is to provide a deburring device for mechanically removing burrs from a polymer molded article.

A second object of the invention is to provide a deburring device that can be automated in a device for mechanically deburring polymer molded articles.

Structure of the Invention (Means for Solving Problems) The first invention provides a motor equipped with a reamer-type cutter having a right angle relief angle of substantially zero degrees, and a support plate and a bearing of a support member connected to the motor. The motor is supported so as to be non-displaceable in the axial direction and displaceable in the direction perpendicular to the coaxial direction, and at the periphery of the motor, between the spring holding member of the support member and the motor. three or more compressed springs disposed at regular intervals along the circumferential direction, and a spring locking member of the support member and a coupling member connected to the motor; A return member consisting of three or more extended extension springs arranged at intervals of is interposed to maintain the relative position of the motor with respect to the support member at a reference position when no external force is applied to the motor. , and the motor is supported so that the relative position of the motor with respect to the support member returns to the reference position when the motor is displaced by the external force, and further, a slight gap is provided around the periphery of the support plate. The fluid use member, which is a combination of a cylinder and a piston, is arranged at a rotationally symmetrical position with respect to the axis of the motor so as to perform an auxiliary function of the return member.

Further, the second invention provides a motor equipped with a fixing means for fixing the polymer molded body and a reamer type cutter having a right angle relief angle of substantially zero degrees, and a support plate of a support member connected to the motor. The spring holding member of the support member and the motor are supported at the periphery of the motor by a bearing so as not to be displaceable in the axial direction and displaceable in a direction perpendicular to the coaxial direction. three or more compressed compression springs arranged at regular intervals along the circumferential direction between the springs, and a coupling member connected to the spring locking member of the support member and the motor in the circumferential direction. A return member consisting of three or more extension springs in an extended state arranged at regular intervals along the motor is interposed so that the relative position of the motor with respect to the support member becomes the reference position when no external force is applied to the motor. and supports the motor so that when the motor is displaced by the external force, the relative position of the motor with respect to the support member returns to the reference position, and further, a periphery of the support plate has a slight burr cutting means, in which a fluid-using member consisting of a combination of a cylinder and a piston is arranged at a rotationally symmetrical position with respect to the axis of the motor so as to perform an auxiliary function of the return member; a moving means for moving the cutting means toward the fixing means and bringing the reamer type cutter into contact with the polymer molded body; the moving means moves the burr cutting means toward the height fixed to the fixing means; The burr cutting means is moved toward the molecular molded body, and the burr cutting means is moved to remove only the burr while urging the reamer-type cutter into contact with the burr-formed part so that a substantially constant urging force is applied thereto. This is its structure.

(Function) In the first invention, the blade follows the irregularities of the polymer molded body, and the urging force of the blade attached to the motor by the return member against the polymer molded body becomes constant.

In the second invention, the cutter follows the uneven portion of the polymer molded body, the urging force of the cutter attached to the motor by the return member against the polymer molded body becomes constant, and furthermore, the moving means Since the burr cutting means can be brought into contact with the polymer molded body, it is possible to synchronize the steps necessary for deburring and to automate the deburring device.

(Example) Next, a first example embodying the first invention and the second invention will be described based on FIGS. 1 to 13, but first an example of the second invention will be described.

As shown in FIGS. 1 and 2, this embodiment uses an exterior material 1 for an automobile ring 5 as a polymer molded body 1.
A is selected, and the burr 2 of the exterior material 1a is cut and removed.

The apparatus of this embodiment includes a fixing means A for fixing the ring 5, a burr cutting means B for cutting the burr 2, and a ring 5 by moving the burr cutting means B to the fixing means A side. and a transfer means C for making contact.

[Fixing means A] As shown in FIGS. 1 and 2, the fixing means A mainly includes a base 6, a ring holding member 7 and a boss fixing member 15 provided on the top of the base 6 to hold the ring 5. It consists of A receiving chamber 8, which is a spatial chamber, is provided in the base 6, and the burr 2 cut and removed from the exterior material 1a is allowed to fall naturally therein and accommodated therein.

An arm 9 that supports the ring holding member 7 and the boss fixing member 15 is stretched over the receiving chamber 8 in a cross shape. Note that a rectangular substrate 10 is provided for attaching the boss fixing member 15 to the overlapping portion of the arm 9.
is welded.

A plurality of terminals 12 for signal cables 11 are connected to the board 10, and a number of switches 13 corresponding to the number of terminals 12 are incorporated.

A boss fixing member 15 for fitting and supporting the boss 14 of the ring 5 is attached to the upper surface of the substrate 10.

A switch plate 16 is attached to one side of the boss fixing member 15, and when the boss fixing member 15 is placed on the top surface of the board 10 and fixed, some of the switches 13 provided on the board 10 can be fixed. It has become inevitable that it will turn on.

Further, the boss fixing member 15 is designed so that if the shape and size of the boss of the ring 5 are different, the upper part thereof and the boss 14 will not match.

Therefore, a type of boss fixing member 15 that matches the boss 14 is prepared. This is to transmit the type of ring 5 fixed to the fixing means A to the control means described later using the signal cable 11.

In addition, a ring holding member 7 is provided in a ring shape around the boss fixing member 15 in the arm 9, and the ring holding member 7 is provided with a ring after the boss 14 of the ring 5 is fitted into the boss fixing member 15. It is designed to hold 5.

[Moving Means C] As shown in FIGS. 1 and 2, the moving means C is a means for moving the burr cutting means B toward the ring 5 on the fixing means A. A base 21 installed close to each other, a lateral movement machine 22 installed on the top surface of the base 21, and a vertical movement machine 23 installed on top of the lateral movement machine 22 with the direction changed by 90 degrees.
and a lifting member 24 attached to the fixing means A side of the vertical moving machine 23.

The lateral moving machine 22 and the lateral moving machine 23 have a known structure, and are machines that move the ring 5 in the longitudinal and lateral directions in FIG. be.

These moving machines 22 and 23 are adapted to be moved by their own built-in drive sources (not shown).

As shown in FIG. 2, according to the program stored in the control means E housed in the base 21, the burr cutting means B attached to the elevating member 24 becomes movable in the vertical direction. It is now possible to move to dimensional positions.

Two rails 25 and 26 are fixed to the elevating member 24 in parallel in the vertical direction, and these rails 2
Along lines 5 and 26, burr cutting means B and gate solidified material cutting means D, which will be described later, are movable up and down.

The elevating member 24 has two air cylinders 27, 2.
8 is attached, and the air cylinder 27 is an air cylinder 29 attached to the cutting means B.
In conjunction with this, the burr cutting means B can be moved in the vertical direction.

Further, the air cylinder 28 is adapted to raise and lower a gate solidified material cutting means D, which will be described later. These air cylinders 27, 28, 29 are operated by actuating air valves (not shown) in response to signals from the control means E.

Note that the control means E is a conventionally known storage arithmetic control device or microcomputer, and is installed on the base 21 and controls starting/stopping and lifting/lowering of the drive sources of the burr cutting means B, the vertical moving machine 23, and the horizontal moving machine 22. Member 24
Air cylinders 27, 28 attached to
Controls starting and stopping of the air cylinder 29 and other means.

[Burr Cutting Means B] As shown in FIG. 3, the burr cutting means B includes a vertically arranged blade 30, a reamer-type cutter 32 connected to the tip of a rotating shaft 31 of the motor 30, and a support for the motor 30. It is composed of a supporting member 33 and other members.

As shown in FIGS. 4 and 5, a reamer type cutter (hereinafter simply referred to as a cutter) 32 is attached to a cylindrical steel material.
This is a rotary knife with a right angle relief angle of 0 degrees and is provided with vertical grooves 32a. Therefore, the back of this cutter can be overlapped with the arc of a circle having the same radius as the length R connecting the center of the cutter and the cutting edge.

When such a cutter 32 is urged against the burr forming portion 3 of the ring 5 and rotated (see FIG. 3), only the burr 2 is cut and removed. In addition, if the rotation speed is high, the rake angle of the cutter 32 may be made obtuse.
Conversely, if the rotation speed is slow, the rake angle should be made acute.

As shown in FIG. 6, the support member 33 is provided on a base plate 34 of an arm 35 attached to the air cylinder 29 (see FIG. 1) of the moving means C.

Such a member is a coupling member 4 to the motor 30.
3 or more (in this embodiment, 6 bearings were provided) fixed on the substrate 34 so as to sandwich the support plate 42 from above and below, A spring locking member 38 is attached to the upper surface of the spring locking member 38, and a spring holding member 3 is fixed to the upper surface of the spring retaining member 38 in the form of a lid.
9, and each member will be explained in detail below.

In addition, three or more (six in this embodiment) fluid use members 37 are fixed to the outer side of the bearing 36 of the substrate 34, and are designed to perform an auxiliary function of a return member to be described later. There is.

The board 34 has a hole 40 through which the motor 30 can pass, and a clearance is formed between the side surface of the hole 40 and the side surface of the motor 30 to allow the motor to float.

Six of the bearings 36, 53 are arranged and fixed at rotationally symmetrical positions with respect to the rotation center of the motor 30, and the support plate 42 in the shape of a hollow disc is inserted between these bearings. 42 is fixed to the motor 30 via the coupling member 43 which is divided into two parts. Therefore, the motor 30 is supported by the support plate 42 being held between the upper and lower sides by both the bearings 36 and 53.
cannot be displaced in the axial direction of the rotating shaft 31, and can move smoothly only in a direction perpendicular to the same shaft 31.

As shown in FIGS. 6 and 8, locking portions 44 are provided on the upper outer periphery of the coupling member 43, and locking holes 44 are provided at regular intervals along the circumferential direction.
5 is worn.

As shown in FIGS. 6 and 7, the six fluid use members 37 are composed of a combination of a cylinder 45 and a piston 46, and are arranged and fixed at rotationally symmetrical positions with respect to the axis of the motor 30.

The cylinder 45 is formed by two casings 47 and 48, and the casing 47 has the cylinder 4
An oil storage chamber 49 is provided so that the oil in 5 can enter and exit.

A clearance 50 is formed between the piston 46 and the cylinder 45 to define the response speed of the piston 46, and oil is allowed to flow through the clearance 50.

Note that a bearing 51 is provided at the tip of the piston 46.
is attached so that even if the support plate 42 moves slightly in the circumferential direction together with the motor 30, the bearing 51 remains in stable contact with the support plate 42.

A hole 52 is provided at the center of the bottom of the spring locking member 38.
A coupling member 43 is inserted into the hole 52, and a clearance is formed between the side surface of the hole 52 and the side surface of the coupling member 43. The motor 30 can float within this clearance range.

A locking portion 54 is provided on the inner surface of the spring locking member 38 at approximately the same height as the locking portion 44 of the coupling member 43.
As shown in the figure, three or more locking holes 56 are provided at regular intervals along the circumferential direction.

Further, these holes 56 are bored at positions such that a straight line connecting the holes 56 and the axis of the motor 30 passes between the two locking holes 55 of the coupling member 43.

Extension springs 57 as return members are locked in a staggered arrangement between the two locking holes 55 and 56, and the resultant force of the two expansion springs 57 locked in one locking hole 55 or 56 is It passes through the axis of the motor 30.

Therefore, the motor 30 is connected to the spring locking member 38.
It is pulled towards the center, loses its balance, and settles into the reference position.

There is also a hole 58 in the middle of the upper part of the lid-shaped spring holding member 39 through which the motor 30 can pass, and a certain clearance is formed between the side surface of the hole 58 and the circumferential surface of the motor 30, and the motor 30 is Float within the range.

Three or more insertion holes 59 are bored in the upper part of the spring holding member 39 in the normal direction thereof, and a compression spring 6 as a return member is inserted into the insertion holes 59.
0 is inserted.

By screwing the plug 61 into the hole 59 through which the compression spring 60 is inserted, the spring 6 is removed.
0 is compressed, and the motor 30 is constantly pushed from around it to hold it at the reference position.

Therefore, the motor 30 is in a state where the extension force of the extension spring 57 and the compression force of the compression spring 60 cancel each other out at the reference position, and the motor 30
When an external force is applied to the motor 30, the motor 30 can be easily moved only in a direction perpendicular to the axial direction by that force alone.

How the apparatus of the second invention configured as described above is implemented will be described below.

First, after being taken out from the mold, the ring 5 from which the gate solidified material has been cut and removed is mounted on the ring holding member 7 of the fixing means A.

At this time, as shown in FIG. 1, a jig of a type that matches the type of the ring 5, that is, a boss fixing member 15 that fits the boss 14 of the ring 5 has already been selected as the boss fixing member 15. Board 1
It is set to 0.

Then, the switch plate 16 attached to the boss fixing member 15 transmits to the control means E an electric signal corresponding to the number of spokes in the ring 5 and their attachment positions.

Upon receiving the signal, the control means E issues signals necessary for operating the horizontal movement machine 22, the vertical movement machine 23, and the air cylinders 27 and 29 in order to move the burr cutting means B based on the program corresponding to the signal. .

Based on these signals, the horizontal moving machine 22, the vertical moving machine 23, and each of the air cylinders 27 and 29 are operated to cut the burr 2 in the ring 5 by moving the blade 32 of the burr cutting means B as shown in FIG. The formed burr forming portion 3 is urged while being rotated.

At this time, the urging force applied to the burr forming portion 3 is set to the minimum necessary for the blade 32 to cut the burr 2.

At the same time as the cutter 32 comes into contact with the burr forming portion 3, it moves while being urged toward the inner peripheral side of the ring 5, and then similarly contacts the spoke portion.

After deburring the inner circumferential side of the ring 5, the blade 32 of the cutting means B comes into contact with and moves to the outer circumferential side as well.

During these contact and movement processes, in the burr cutting means B, the motor 30 and the support member 33 maintain the following relative positional relationship.

If the ring 5 is molded relatively well and there are no uneven parts in the burr forming part 3, there will be no particular problem, but in reality, there are unevenness within a range of variation, and the burr 2 is formed on top of the unevenness. Often.

If a conventional burr cutting machine in which the relative positional relationship between the motor 30 and its support member 33 does not change is used as is, and the blade is brought into contact with the burr forming part 3, which has many uneven parts, the right angle relief angle will change. Even a zero temperature reamer type cutter has some unfavorable effect on the deburring of the ring 5.

For example, by cutting too much of the burr 2 and manipulating it to the exterior material 1a, or conversely, by leaving an uncut portion, the burr 2
In some cases, the appearance after being scraped off may deteriorate.

However, in the burr cutting means B of the present invention, the motor 30 is operated by the compression spring 60 and the extension spring 57 as the return member 62, and the fluid-using member 37 which serves as an auxiliary function for the return of these springs 60 and 57. Surrounded motor 3
Since the blade 32 is capable of floating in a direction perpendicular to the zero axis, when the blade 32 encounters uneven parts, it tries to move along with them.

That is, the relative positions of the motor 30 and the support member 33 are about to change.

However, this change in relative position causes displacement of compression spring 60, extension spring 57, and fluid use member 37.

However, the support member 33 has the spring 60,
57 and the fluid using member 37, the support member 33 changes, and the relative position of the motor 30 to the support member 33 is at or close to the reference position before the cutter 32 encounters the uneven part. position, and the motor 30 will return to its original relative position.

Thus, the support member 33 is compressed by the compression spring 6.
0, extension spring 57, and fluid usage member 37
The force that urges the motor 30 through is again the same as the original force, and the burrs 2 on the uneven portions are evenly cut off in the same way as the burrs 2 on other parts.

In this way, if the device of the second invention is used,
The blade 32 is displaced following the uneven portion of the ring 5,
In the ring 5, the marks where the burr 2 is cut are clean and the base price of the product is not lowered.

Further, since the return member 62 is provided around the motor 30, the cutter 32 can be made to follow the uneven portion of the polymer molded body in the direction perpendicular to the axis of the motor 30.

Further, a fluid using member 37 consisting of a combination of a cylinder 45 and a piston 46 arranged at a slight gap on the periphery of the support plate 42 is a return member 6.
Support plate 4 with improved responsiveness and followability of 2.
The return member 62 can perform an auxiliary function to restrict movement in the direction perpendicular to the axis of the motor 2 and return the motor 30 to the reference position.

Next, a second embodiment embodying the first invention will be described. In this embodiment, only the burr cutting means B of the first embodiment can be used as a deburring device by being removed from the device of the second invention.

Transportation means C to 6 to 8 shown in FIGS. 1 and 2
The burr cutting means B shown in the figure is removed to form an independent burr removing device. This device also has figures 4 and 5.
A cutter 32 having the cross-sectional shape shown in the figure is attached to a rotating shaft 31 of a motor 30. A compression spring 60 as a return member 62 is attached to the six-piece support member 33, and an extension spring 57 is attached to the six-piece support member 33.

The motor 30 is designed to be easily displaced in a direction perpendicular to its axis, and after applying an external force to the motor 30 to displace the motor 30 in a direction perpendicular to its axis, When you release your hand, it immediately returns to its reference position.

Holding this deburring device in your hand, see Figures 1 and 2.
A ring 5 with a burr 2 is fixed to a fixing means A shown in the figure. The exterior material 1a of this ring 5 is made of soft polyurethane.

Then, as shown in FIG. 3, the blade 32 is moved while being biased so that a substantially constant biasing force is applied to the burr forming portion 3 of the ring 5. As a result, even though there are uneven parts of the exterior material 1a in the burr forming part 3, the cutter 32 follows the uneven parts and scrapes off the burr 2, and the burr marks on the ring 5 are removed. It is finished neatly, with almost no uncut or over-cut parts.

Therefore, even if the device of this embodiment is held in the hand, it can be used as a deburring device.

In this way, according to the first and second inventions, it is possible to deburr the polymer formed body 1 having uneven parts.
In fact, as mentioned above, in addition to the burrs 2, the gate solidified material 4 is attached to the polymer molded body 1 immediately after molding, so it is difficult to cut and remove the burrs using the apparatus of the first and second inventions. It is better to cut and remove the gate solidified material 4 first. The removing means used in this case will be explained based on FIGS. 1, 2, and 9 to 13.

Therefore, here, prior to deburring the ring 5, a means for cutting the gate solidified material 4 that accompanies the molding process of the ring 5 will be mainly described.

Therefore, as shown in FIGS. 1 and 2, the exterior material 1 of the ring 5 with the gate solidified material 4 and the burr 2
a gate solidified material cutting means D for cutting the gate solidified material 4 with a as the polymer molded object; and a moving means capable of moving the gate solidified material cutting means D toward the fixing means A. C will be explained.

Note that most of the structures of the fixing means A, the burr cutting means B, and the moving means C are the same as those of the first embodiment described above.

As shown in FIG.
6 via a sliding member 70.

A fixing member 71 is fixed to the sliding member 70, and a fulcrum shaft 75 is provided at the center portion of the distal end of the fixing member 71.

A U-shaped rotating member 72 that is rotatable about a fulcrum shaft 75 is attached to the lower surface of the fixed member 71 .

Two branch parts 72a, 72 of this rotating member 72
There are two rollers 73 which are copying members on the lower surface side of b.
a and 73b are pivotally supported, and a gripping member 76 of a fixed cutter 74 is fixed between the branch parts 72a and 72b.

Since the cutting edge of the fixed cutting tool 74 is inclined and double-edged, if the fixed cutting tool 74 is moved, the gate solidified material 4 can be cut stably in the advancing direction of the cutting edge.

A hook 77 is attached to the side surface of the fixed member 71, and a hook 78 is attached to the side surface of the rotating member 72, and a spring 79 is secured to these hooks 77 and 78 in an expanded state. Therefore, unless an external force is applied to the rotating member 71, the rotating member 71 remains rotated in the direction on which the spring 79 acts.

Note that when the fixed cutter 74 is viewed from the side, it appears to be attached to rollers 73b and 73a as shown in FIG.
The shafts 80b and 80a are attached at a different angle from the axial center direction of the shafts 80b and 80a.

This is because the portion where the roller 73b comes into contact with the ring 5 is different from the portion where the gate solidified material 4 is cut. If this is not done, the cutting of the gate solidified material 4 will be obstructed by the roller 73b that moves ahead of the fixed blade 74.

The gate solidified material cutting means D is constructed as described above, but as shown in FIG. 1 and FIG. A gripping means F is provided for gripping.

The gripping means F is attached to a frame 9 as shown in FIG.
It consists of a bar 91 fixed at 0, and a rotating bar 92 on which the gate solidified material 4 can be placed and which can be rotated on top of the fixed bar 91.

The rotation bar 92 is a fulcrum shaft 93 provided on the arm 90.
Rotates around the center. The rotating bar 92 is rotated by operating the air cylinder 94, and an operating command for the air cylinder 94 is issued from the control means E.

The gate solidified material cutting means D constructed as described above is used in the following manner.

First, as shown in FIG. 1 and FIG.
on the ring holding member 7. The settings are the same as in the first embodiment.

Next, the end portion 4a of the gate solidified material 4 is placed on the fixed bar 91 as shown in FIG.
2 to sandwich the end portion 4a between the two bars 91 and 92. These series of operations are performed by the control means E and a separately provided ring 5 setting means (not shown).

In this way, once the ring 5 is fixed to the fixing means A, the horizontal moving machine 22 and the vertical moving machine 2 are controlled by the control means E.
3. By operating the air cylinder 28 attached to the elevating member 24, the gate solidified material cutting means D is moved to the outer circumferential side of the ring 5 as shown in FIG. At this time, first, the gate solidified material cutting means D is moved so that the roller 73a that is farther away from the fixed blade 74 comes into contact with the outer peripheral side surface of the ring 5. If the roller 73b, which is closer to the fixed cutter 74, is brought into contact with the ring 5 first,
This is because the fixed cutter 74 easily bites into the burr 2 and the gate solidified material 4.

Of course, at the same time that the fixed blade 74 faces in the tangential direction of the ring 5, the means D approaches the outer peripheral side of the ring 5 so that the approaching direction of the gate solidified material cutting means D coincides with the normal direction of the ring 5. If possible, there is no need to adopt the approach method shown in FIG.

Also, the edge portions of the rollers 73a and 73b are the first
As shown in FIG. 1, the ring 5 should hit the base portion 4b of the gate solidified material 4.

After doing this, if the horizontal moving machine 22 and the vertical moving machine 23 are operated to move the gate solidified material cutting means D toward the gate solidified material 4, the fixed blade 74 will also move along with the movement.

The cutter 74 moves according to the surface condition of the outer circumferential side of the ring 5, which is imitated by the rollers 73a and 73b.
There is no need to cut the gate solidified material 4 and cut into the exterior material 1a.

Moreover, since the time required for cutting is short, the use of this device improves work efficiency.

When the gate solidification cutting means D is separated from the ring 5 after cutting of the gate solidified material 4 is completed, the spring 79 is actuated and the rotating member 72 is rotated to the side where the hook 78 is attached, and the next Prepare to enter the cutting cycle.

When the cutting operation of the gate solidified material 4 is completed in this way, the burr cutting operation is started as in the first embodiment, and both the deburring of the ring 5 and the gate cutting are completed.

Therefore, by using the gate solidified material cutting means D together with the control means E and other means, the gate cutting and deburring of the polymer molded body 1 can be completely automated.

Although the embodiments of the first and second inventions have been specifically described above, the structure of the present invention is not limited to the structure of these embodiments, and can also be implemented in the following embodiments, for example.

(1) As the polymer molded object 1, any polymer can be used as long as it has burrs 2, or the cutter 3
Any shape that can contact and energize 2 is a target.

(2) The burr forming portion 3 may be present on a flat surface of the polymer formed body 1, or may be present on a curved surface. If the burr 2 exists on a plane, the burr cutting device of the first invention or the burr cutting means B of the second invention is urged in a direction perpendicular to the plane and moved along the plane. Bye.

In the case of a curved surface, the burr may be brought into contact with the burr in a direction perpendicular to the tangent at the point to be cut.

Effects of the Invention When the apparatus of the first invention is used, it becomes possible to mechanically deburr a polymer molded body using a reamer type cutter, and the conventional deburring work can be freed from manual work. Moreover, the finished product with the burrs removed will be in a beautiful state.

By using the device of the second invention, it becomes possible to mechanically deburr a polymer molded body using a reamer-type cutter, and therefore, in addition to the effect that deburring work can be freed from manual work, It becomes possible to synchronize or automate the deburring process of the polymer molded body and the processes before and after it, such as the process of fixing the polymer molded body and the process of cutting the gate solidified material.

[Brief explanation of drawings]

Figure 1 is a plan view of the first embodiment, Figure 2 is a side view of the same, Figure 3 is a perspective view of the burr cutting means (device), Figure 4 is a side view of the blade, and Figure 5 is an enlarged view of the blade. 6 is a partial longitudinal sectional view of the burr cutting means (device), FIG. 7 is a partial sectional view in the direction of the -arrow in FIG. 6, and FIG. 8 is a partial sectional view in the direction of the -arrow in FIG. 6. 9 is a perspective view of the gate solidified material cutting means, FIG. 10 is a perspective view of the gate solidified material gripping means, FIG. 11 is a sectional view showing the state in which the fixed blade is in contact with the ring, and FIG. 12 is a perspective view of the gate solidified material cutting means. FIG. 13 is an explanatory diagram showing a state in which the gate solidified material cutting means first contacts the ring. FIG. 13 is an explanatory diagram showing a state in which the gate solidified material cutting means is in complete contact with the ring. FIG. 14 is a front view of the ring. Figure 15 is a cross-sectional view of the ring. Polymer molded body 1, burr 2, burr forming part 3, steering wheel 5, vertical motor 30, reamer type cutter 32, support member 33, extension spring 57 as return member 62, compression spring 60, fluid use member 37, Fixing means A, burr cutting means B,
Transportation means C.

Claims (1)

[Claims] 1. A device for removing burrs 2 from a burr-forming portion 3 of a polymer molded body 1, comprising: a reamer-type cutter 32 with a right angle relief angle of substantially zero degrees;
A motor 30 equipped with a support plate 42 and a bearing 36 of a support member 33 connected to the motor 30
The spring holding member 39 of the support member 33 is supported at the periphery of the motor 30 so as to be non-displaceable in the axial direction and displaceable in the direction perpendicular to the coaxial direction.
and the motor 30, three or more compression springs 60 in a compressed state are arranged at regular intervals along the circumferential direction, and a coupling is also connected to the spring locking member 38 of the support member 33 and the motor 30. A return member 62 consisting of three or more extended extension springs 57 disposed at regular intervals along the circumferential direction between the motor 30 and the member 43 is interposed to support the motor 30 when no external force is applied. The support member 33 is held so that the relative position of the motor 30 with respect to the member 33 is the reference position, and when the motor 30 is displaced by the external force.
The support plate 4 supports the motor 30 so as to return the relative position of the motor 30 to the reference position.
A fluid using member 37 consisting of a combination of a cylinder 45 and a piston 46 is mounted on the periphery of the motor 30 with a slight gap therebetween, and is rotationally symmetrical with respect to the axis of the motor 30 so as to perform an auxiliary function of the return member 62. A deburring device for a polymer molded body, characterized in that the deburring device is arranged at a certain position. 2 A device for removing burrs 2 from a burr-formed portion 3 of a polymer molded body 1, comprising a fixing means A for fixing the polymer molded body 1, and a reamer mold with a right angle relief angle of substantially zero degrees. Knife 32
A motor 30 equipped with a support plate 42 and a bearing 36 of a support member 33 connected to the motor 30
The spring holding member 39 of the support member 33 is supported at the periphery of the motor 30 so as to be non-displaceable in the axial direction and displaceable in the direction perpendicular to the coaxial direction.
and the motor 30, three or more compression springs 60 in a compressed state are arranged at regular intervals along the circumferential direction, and a coupling is also connected to the spring locking member 38 of the support member 33 and the motor 30. A return member 62 consisting of three or more extended extension springs 57 disposed at regular intervals along the circumferential direction between the motor 30 and the member 43 is interposed to support the motor 30 when no external force is applied. The support member 33 is held so that the relative position of the motor 30 with respect to the member 33 is the reference position, and when the motor 30 is displaced by the external force.
The support plate 4 supports the motor 30 so as to return the relative position of the motor 30 to the reference position.
A fluid using member 37 consisting of a combination of a cylinder 45 and a piston 46 is mounted on the periphery of the motor 30 with a slight gap therebetween, and is rotationally symmetrical with respect to the axis of the motor 30 so as to perform an auxiliary function of the return member 62. a burr cutting means B disposed at a position; and a moving means C for moving the burr cutting means B toward the fixing means A and bringing the reamer-type cutter 32 into contact with the polymer molded body 1, The moving means C moves the burr cutting means B toward the polymer molded body 1 fixed to the fixing means A, and the reamer mold is moved so that a substantially constant urging force is applied to the burr molded part 3 A deburring device for a polymer molded body, characterized in that only the burrs 2 are removed by moving the burr cutting means B while urging and abutting the blade 32.