JPH0825371A - Burr treatment device of resin molded part - Google Patents

Abstract

PURPOSE:To provide a burr treatment device properly heat-treating burr even with respect to a resin molded part requiring high accuracy to smoothly form the outer surface of the molded part. CONSTITUTION:An arm 11 is supported so that a contact element 20 comes into contact with at least the burr of the resin molded part 40 supported between centers 2, 3 in a freely revolvable manner and energized in the direction bringing the contact element into contact with the resin molded part by an energizing device 35 and an electric heater 21 and motors 8, 32 are driven. By this constitution, the resin molded part is rotated around the axis parallel to the burr 42 and the arm 11 is guided by a cam device 30 and the contact element is moved in horizontal and vertical directions within a predetemained region (e.g., groove 41) in a state heated to the almost melting temp. of the resin molded part. The burr is heated and melted to be fused to the general surface of the resin molded part to become a smooth surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring device for resin molded parts, and more particularly to a deburring device for heating and melting burrs formed on the outer surface of a resin molded part to smoothly form the outer surface of the resin molded part. .

[0002]

2. Description of the Related Art When molding a resin product, burrs are usually generated along a parting line, that is, a mold dividing line. Since burrs not only impair the appearance but also deteriorate the performance depending on the product, various measures have been taken from the past. First, in order to suppress the occurrence of burrs, for example, the structure of a molding die has been improved, the molding conditions have been optimized, and various devices have been proposed. However, in such an apparatus, high precision is required in processing and alignment of molds, and manufacturing and processing costs are high.

For this reason, it is common to allow some burr to be generated during molding, and to perform some treatment after molding. A device for removing burr by cutting or heating to melt burr. A device for doing so has been proposed. As the latter device, for example, in Japanese Examined Patent Publication No. 62-52693, a hot air supply device is provided which is relatively movable with respect to a plastic product and blows hot air against the burr on the burr-forming surface of the plastic product. There has been proposed a burr treatment device that automatically smoothes a burr-generating surface of a plastic product by providing a sliding contact member that slidably contacts the burr-generating surface to smooth the burr that is blown with hot air.

Similarly, in Japanese Examined Patent Publication No. 3-67011, biting burrs generated on the outer side and the inner side of a blow-molded annular hollow molded body are formed on the outer corners of a ring-shaped support die for holding the molded body. There is disclosed a deburring device which is automatically melted and removed by a heating plate provided and an inner heating plate provided inside a supporting mold.

Further, Japanese Utility Model Publication No. 3-1233 discloses a technique for removing burrs generated in a die cutting portion of a bottle mold by a gas burner frame during hollow molding of a plastic bottle, and a burner guide used for this is proposed. Has been done. Further, Japanese Patent Laid-Open No. 56-137918 proposes a method of contacting plasma with a resin burr and ashing the burr to remove the resin burr. Depending on the case, it may be inappropriate.

[0006]

By the way, with the recent development of resin technology, resin materials called engineering plastics, which are excellent in strength, dimensional stability, heat resistance, etc., are used for various machine parts and are It is becoming more and more popular because it can be manufactured at a lower price. However, even in engineering plastics, burrs that occur during molding are unavoidable, so they are not used for mechanical parts that require high precision. Of course, it is possible to minimize the occurrence of burrs during molding and to process the burrs by mechanical processing after molding to ensure the prescribed accuracy,
The current situation is that manufacturing and processing costs will increase, and the effect of lower prices due to the use of resin will be offset.

[0007] As a mechanical part expected to be made into such a resin, for example, there is a piston used in a hydraulic brake device for automobiles. In order to maintain stable performance for a long period of time with respect to this piston, dimensional accuracy in micron unit Specifically, a high degree of fitting accuracy and roundness are required. Moreover,
Since a large pressure is applied to this piston, it is necessary to secure a predetermined strength, and when a resin is used, a reinforcing filler such as glass fiber is buried. Therefore,
If the burr generated at the time of molding the piston is removed by cutting, for example, the reinforcing filler is exposed, so that the predetermined sealing performance required for the piston may not be obtained.

On the other hand, Japanese Patent Publication No. 62-5269 mentioned above.
If the burr is heated and melted as described in Japanese Patent No. 3 or the like, the reinforcing filler is not exposed, but the devices described in any of the Japanese publications cannot be used for parts such as the pistons. . For example, the deburring device described in Japanese Patent Laid-Open No. 3-67011 is intended for a molded body such as an armrest outer skin that is easily heated and melted, and is simply used for a high-strength component such as the piston. It is not possible to melt and remove it only by abutting the heating plate. Further, in the burr treatment device described in Japanese Patent Publication No. 62-52693, the burr is melted by the hot air supplied from the hot air supply device, which may damage the general surface near the burr. It cannot be used for parts that require high precision such as pistons.

Therefore, with respect to burrs produced when a component such as the above piston is manufactured by resin molding,
For example, as described in Japanese Utility Model Laid-Open No. 5-422, it is best to bring the iron into direct contact with the resin and heat it to a predetermined temperature. However, the trowel described in the publication is a heat-melting iron that heats the fixing material through the resin coating portion, and it is premised that the fixing material is completely melted to fix other members. Unlike the conditions required for the treatment of burrs described above, no automation was intended.

Therefore, the present invention provides a burr treatment device for a resin molded part, which appropriately heats the burr even on a resin molded part which is required to have a high accuracy and smoothly forms the outer surface of the part. With the goal.

Another object of the present invention is to enable the burr treatment device for a resin molded component described above to automatically and burr the resin molded component in a short time.

A further object of the present invention is to provide a burr treatment device for resin molded parts, which can easily and appropriately cope with changes in the size of burr, processing conditions and the like.

[0013]

In order to achieve the above object, the present invention provides, as a first aspect of the present invention, a resin-molded component having a burr on its outer surface, which is heat-treated to heat the outer surface of the resin-molded component. In a burr treatment device for a resin-molded part that smoothly forms a contact, a contactor disposed at a position in contact with at least the burr of the resin-molded part, and heating for heating the contactor to substantially the melting temperature of the resin-molded part Means, urging means for urging the contact in the direction of the resin molded part, and relative movement for moving one of the resin molded part and the contact relatively to the other along at least the burr. Means, and rotation drive means for rotating one of the resin molded component and the contactor relative to the other.

In the burr treatment device for the resin molded component, as described in claim 2, a measuring means for further measuring the size of the burr of the resin molded component, and the measuring means for measuring the burr size. A biasing force adjusting means for adjusting the biasing force of the biasing means, a heating temperature adjusting means for adjusting the heating temperature of the heating means according to the measurement result of the measuring means, and the relative moving means according to the measurement result of the measuring means. It is preferable to include at least one of the speed adjusting means for adjusting the moving speed by the above and the rotating speed by the rotation driving means.

According to a third aspect of the present invention, a resin-molded component deburring apparatus for heat-treating the resin-molded component having a burr on its outer surface to smoothly form the outer surface of the resin-molded component. A supporting device for rotatably supporting the resin-molded part around an axis parallel to the burr, a first motor for rotationally driving the resin-molded part around the axis, and A contactor disposed at least at a position in contact with the burr and having a contact portion formed of a material having a hardness higher than that of the resin-molded component, and the contactor in horizontal and vertical directions with respect to the resin-molded component. A movably supporting member, an urging device for urging the supporting member in a direction in which the contactor contacts the resin molded component, and the contactor horizontally and vertically in a predetermined region along the burr. Move in the direction Wherein the cam device for guiding the support member, and a second motor for driving the cam device, may be provided with a heating device for heating the contactor to approximately the melting temperature of the resin molded part as.

According to a fourth aspect of the present invention, there is provided a deburring device for a resin molded part, further comprising a displacement sensor for measuring a height of the burr of the resin molded part, and the displacement sensor according to a measurement result of the displacement sensor. Biasing force adjusting means for adjusting the biasing force of the biasing device, heating temperature adjusting means for adjusting the heating temperature of the electric heating device according to the measurement result of the displacement sensor, and the first and the second according to the measurement result of the displacement sensor. At least one of the speed adjusting means for adjusting the drive speed of the second motor may be provided.

[0017]

In the deburring apparatus according to the first aspect of the present invention, the contact arranged at least in contact with the burr of the resin molded part is heated by the heating means to a substantially melting temperature of the resin molded part. At the same time, it is urged in the direction of the resin molded component by the urging means. Then, the relative moving means is driven, for example, the contact moves along the burr, and the rotation driving means is driven, and, for example, the resin molded component rotates relatively to the contact. Thus, the contact heats and melts the burr, and fuses it with the general surface of the resin molded part to form a smooth surface.

When the deburring device is constructed as in claim 2, the temperature of the contact with respect to the burr is adjusted by at least one adjusting means in accordance with the size of the burr measured by the measuring means. , The contact pressure or the relative speed is adjusted and set to an appropriate value according to the size of the burr, that is, an optimum value for processing the burr and forming a smooth surface.

Further, in the deburring apparatus according to the third aspect of the present invention, the contactor arranged at a position in contact with at least the burr of the resin molded component is supported by the supporting member. The support member is urged by the urging device in the direction in which the contactor comes into contact with the resin molded component, and the electric heating device and the first and second motors are driven. As a result, the resin-molded part rotates on an axis parallel to the burr on the supporting device, the supporting member is guided by the cam device, and the contact is heated to substantially the melting temperature of the resin-molded part. Move region horizontally and vertically. Thus, the contact moves relative to the resin molded part in the axial direction and in the direction orthogonal thereto, and the burr is reliably heated and melted by the contact and fused with the general surface of the resin molded part. It becomes a smooth surface.

When the deburring device is constructed as in claim 4, the temperature of the contact with respect to the burr is adjusted by at least one adjusting means according to the height of the burr measured by the displacement sensor. , Contact pressure, and first and second
Any of the motor driving speeds is adjusted, and is set to an optimum value for forming a smooth surface according to the height of the burr.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show an embodiment of the deburring apparatus of the present invention, which is a machine frame (only the supporting portion is shown by 1 in FIG. 1).
Centers 2 and 3 are arranged at a predetermined distance from each other, the center 2 is supported by a bearing 4 so as to be movable in the axial direction, and the center 3 is supported by a bearing 5 so as to be rotatable. A spring 6 is provided between the center 2 and the machine casing 1.
And the center 2 is biased toward the center 3. The center 2 is connected to a lever 7 whose one end is axially supported by the machine frame 1. When the lever 7 swings in the clockwise direction in FIG. 1 about the shaft 7a against the urging force of the spring 6. , The center 2 moves backward (moves leftward in FIG. 1). On the other hand, the center 3 is configured to be rotationally driven by the motor 8.

The resin molded part 40 of interest in the present embodiment is a cylindrical body made of glass fiber reinforced engineering plastic in which an annular groove 41 is formed as shown in FIG. 10, and a burr 42 is formed in the axial direction. There is. This resin molded part 40 is used as a piston of a tandem master cylinder of the vehicle brake device shown in FIGS. 8 and 9. That is, generally, the piston 400 is housed in the master cylinder housing MC so as to be slidable in a liquid-tight manner.
The piston 400 has annular grooves 401 and 402 formed therein, and a cup seal CS is fitted therein.

When this piston 400 is formed by injection molding of a nylon-based engineering plastic material using glass fiber as a core material, for example, a burr 42 is formed along the padding line as schematically shown as a resin molded component 40 in FIG. Is formed. Since the burr 42 is very small (30 to 50 μ), there is no problem on the general surface (cylindrical surface), but if the burr 42 projects at an acute angle, for example, in the groove 41, it is very small between the inner surface of the cup seal CS. There may be a gap. Therefore, in the present embodiment, the resin molded component 40 as shown in FIG. 10 is targeted, and at least the burr 42 in the groove 41 is processed to form a smooth surface.

Returning to FIGS. 1 and 2, when the lever 7 is operated to retract the center 2 and the resin molding component 40 is interposed between the center 2 and the center 3, the lever 7 is returned to its original position.
As shown in FIG. 1, the resin molded part 40 is supported by both centers 2 and 3. Then, when the motor 8 is driven to rotate, the resin molded part 40 is configured to rotate about an axis parallel to the burr 42 due to frictional engagement between the center 3 and the resin molded part 40. Incidentally, an engaging means (not shown) may be separately provided between the center 3 and the resin molded component 40. Alternatively, the resin molded part 40
Chuck (not shown) instead of the center 3 depending on the shape of
May be provided, and the resin molded component 40 may be rotationally driven while being gripped.

One end of an arm 11 is supported on the machine frame 1 so as to be vertically swingable and horizontally swingable and slidable. That is, the arm 11 is supported by the U-shaped support frame 12 so as to be swingable in the vertical direction of FIG. 2 about the shaft 13, and the support frame 12 is supported by the shaft 14 as shown in FIG. 1 is rotatably supported. Further, as shown in FIG. 1, a notch 11 a is formed in the support portion of the arm 11 along the shaft 13, and the pin 13 embedded in the shaft 13 is formed.
It is arranged so that p fits into the notch 11a. A spring 13s is interposed between the end of the arm 11 and the support frame 12, and the bottom of the notch 11a of the arm 11 is urged to come into contact with the pin 13p.

At the other end of the arm 11 (upper end in FIG. 1), a contact 20 is supported so as to extend in a direction orthogonal to the axis between the centers 2 and 3 (the axis parallel to the burr 42). Has been done. This contactor 20 has a specific heat of metal or higher (which may be about the specific heat of iron), and wear can be suppressed as much as possible against frictional contact with the resin molded part 40 (including glass fiber) during sliding. As described above, the columnar body is formed of a metal or a sintered material having a hardness higher than that of the resin molded component 40 and having a heat capacity as large as possible. An electric heating device 21 including an electric heating coil serving as a heating unit is attached to the main body of the contactor 20.

A rod-shaped cam follower 15 is fixed to the intermediate portion of the arm 11 in parallel with the contact 20, and the tip end portion of the rod-shaped cam follower 15 is disposed so as to contact the cam surface C1 of the rotary cam 31. The rotary cam 31 is rotatably supported around an axis orthogonal to the axis of the arm 11, and is supported by the machine frame 1 so as to be rotationally driven by the motor 32. The cam surface of the rotating cam 31 is also formed on the surface with which the side surface of the tip end of the cam follower 15 abuts, that is, the surface orthogonal to the axis of the rotating cam 31, as indicated by C2 in FIGS.

Springs 33 and 34 are stretched between the arm 11 and the machine frame 1, and the side surface of the tip end of the cam follower 15 is pressed against the cam surface C2 by these urging forces. Similarly, as shown in FIG.
The solenoid 35 is interposed between the machine frame 1 and the machine frame 1, and the electromagnetic force urges the arm 11 toward the machine frame 1,
The top surface of the tip end of the cam follower 15 is pressed against the cam surface C1. Instead of the solenoid 35, a spring,
Other biasing means such as an air cylinder may be used.

As a result, the cam follower 15 follows the cam surfaces C1 and C2 according to the rotation of the rotary cam 31 in a state of being pressed against the cam surfaces C1 and C2 of the rotary cam 31, and the springs 33, 34 and 13s. Energizing force and solenoid 3
The arm 11 swings vertically and horizontally against the electromagnetic force of 5, and the contactor 20 fixed to the end of the arm 11 moves in the horizontal and vertical directions following the movement of the cam follower 15. Therefore, the cam surfaces C1 and C2 of the rotary cam 20 (that is,
The profile) is set so that the contact 20 draws a predetermined trajectory in the horizontal and vertical directions within a predetermined region, and in this embodiment, the resin molded component 40 descends along the left side surface of the groove 41,
It is formed so as to move axially along the bottom surface, rise along the right side surface, and return to the original position.

In the deburring apparatus of the above embodiment, for example, as shown in FIG. 2, each control signal is output from the controller 100 to the electric heating device 21, the solenoid 35 and the motors 8 and 32 in FIG. Various sensors are provided in accordance with the detected signals from the controller 10
0 is supplied. For example, the displacement sensor S1 that detects the height of the burr 42 while the resin molded component 40 is rotating, the contactor 20.
A temperature sensor S2 that detects the surface temperature of the tip of the, a pressure sensor S3 that detects the magnitude of the urging force to the resin molded component 40, and the like are provided. Incidentally, these sensors S1 and the like are omitted in FIGS.

As shown in FIG. 3, the controller 100 includes a microprocessor CPU 101, a memory ROM 102, a RAM 103, an input interface 104 and an output interface 1 which are interconnected via a bus.
It is equipped with 05. The detection signal from the sensor S1 or the like is transferred from the input interface 104 to C via the amplifier circuit A1 or the like.
It is configured to be input to the PU 101. Also,
From the output interface 105 to the drive circuits 106, 1
A control signal is output to the motors 8 and 32 via 07, the solenoid 35 is excited via the drive circuit 108, and a current is supplied to the electric heating device 21 via the drive circuit 109. . The ROM 102 stores a program for performing a predetermined burr removal operation, and the CPU 101
Executes this program, and the RAM 103 temporarily stores the variable data necessary for executing this program.

Instead of the controller 100, a control circuit may be provided for each device such as the motor 8 so as to individually perform a predetermined control. Further, without providing the sensor S1 and the like, for example, the contactor 2 is provided on the electric heating device 21 itself.
It is also possible to have a function of automatically adjusting 0 to a predetermined temperature range.

In the deburring apparatus having the above structure, the motor 32 is driven after the resin molded part 40 is supported between the centers 2 and 3, and the arm 11 is moved to a predetermined initial position by the cam device 30. The position is set. continue,
The solenoid 35 is excited and electric current is supplied to the electric heating device 21. Then, when the motor 8 is driven, the resin molded component 40 rotates about an axis parallel to the burr 42.
The driving order of the motors 8, 32, etc. is not limited to the above-mentioned order and may be changed as appropriate.

As a result, the arm 11 becomes the resin molded component 4
The tip of the contact 20 is pressed by the groove 41 of the resin molded component 40 while being biased in the 0 direction, and the cam device 30 causes the contact 2 to rotate in the state where the resin molded component 40 rotates about the axis.
0 moves in the horizontal and vertical directions, and moves in the groove 41 in the axial direction of the resin molded component 40. That is, according to the profile of the rotating cam 31, the contact 20 moves in the groove 41 in the horizontal and vertical directions while being heated to substantially the melting temperature of the resin molded component 40. Therefore, the burr 42 is appropriately heated and melted by the contact 20 which moves in the axial direction parallel to the burr 42 and in the direction orthogonal to the axial direction, so that the resin molded part 40.
It blends with the general surface of to form a smooth surface.

4 to 7 relate to another embodiment of the present invention. The same components as those of the embodiment of FIGS. 1 to 3 are designated by the same reference numerals and their description will be omitted. In this embodiment, the drive mechanism 9 is connected to the lever 7, and the controller 1
The lever 7 is driven by the drive mechanism 9 according to the control of FIG.
It is configured so that it can be swung to the left and right, and automatic loading is possible. Further, each of the motors 8 and 32 is composed of, for example, a stepping motor, and the rotation speed can be variably controlled and can be stopped at an arbitrary position. Phase sensors S4 and S5 are provided on the output shafts of the motors 8 and 32, that is, the center 3 and the rotary shaft of the rotary cam 31, respectively.
However, the rotation angle may be directly detected from the drive pulse signals of the motors 8 and 32.

In this embodiment, a displacement detecting device 60 for measuring the height of the burr 42 is further provided. This is because, for example, a detection arm 61 is slidably supported with respect to the machine frame 1, one end of the detection arm 61 is connected to a motor 63 via a rack and pinion mechanism 62, and the other end is directed in the burr 42 direction. Displacement sensors S1 arranged in parallel
(Three in this embodiment) are joined together. Displacement sensor S
1 may be of any type, such as one that contacts the surface to be detected or one that uses light. Alternatively,
As shown in FIG. 5, the arm 11 may be provided with an acceleration sensor S6 to measure the position and height of the burr 42 based on the acceleration of the swinging motion of the arm 11. Displacement detection device 6
The detection signal of 0 is supplied to the controller 100, and is used for adjusting the temperature of the contact 20 described later, adjusting the urging force by the solenoid 35, adjusting the driving speed of the motors 8 and 32, and the like.

Although the urging force of the springs 33 and 34 cannot be adjusted in the embodiment shown in FIG. 1, the urging force adjusting mechanisms 51 and 52 are provided in this embodiment. That is,
The spring 33 is connected to a frame 53 having a long hole, and a pair of pins 54 are fitted in the long hole of the frame 53 and fixed to the machine frame 1. The frame 53 is connected to a motor 56 via a rack and pinion mechanism 55, and the motor 56 is fixed to the machine frame 1. Since the spring 34 side is also similarly configured, the description thereof will be omitted (note that the motor 57 can be controlled differently from the motor 56, so that the reference numeral is different). As a result, when the motors 56 and 57 are rotationally driven, the frame 53 is driven via the rack and pinion mechanism 55 connected to each, and the tension of the springs 33 and 34 changes. Thus, in the controller 100, for example, the rotation angle of the motor 56 is set according to the height of the burr 42 on the side surface of the groove 41, and the springs 33 and 34 are set to predetermined tensions, respectively.

Since the electric heating device 21 heats the contact 20 to a predetermined temperature, in order to prevent heat leakage as much as possible,
A cavity 11b is formed in the arm 11 in the vicinity of the support portion of the electric heating device 21, and the circumference of the support portion of the electric heating device 21 is thin. A temperature sensor S2 is provided at the tip of the arm 11,
In order to protect the lead wire L1 of the temperature sensor S2 and the lead wire L2 of the electric heating device 21 from heat, a protective member 23 formed of a thin iron plate or the like having air permeability is provided. The temperature sensor S2 continuously measures the temperature in the vicinity of the contact 20. The controller 100 corrects the measurement result based on the experimental result, and the temperature is used as the temperature of the tip of the contact 20 for heating control. , The tip of the contactor 20 is automatically adjusted to a predetermined set temperature.

Further, a pressure sensor S3 is fixed to the lower part of the arm 11, for example. That is, when the arm 11 swings toward the resin-molded component 40 by the solenoid 35, the contact 20 contacts the resin-molded component 40 at substantially the same time as the contact 20 contacts the resin-molded component 40.
The pressure sensor S3 is arranged so that an urging force equivalent to the urging force when pressed by is applied, and the detection signal thereof is supplied to the controller 100.

In the deburring apparatus of this embodiment having the above-mentioned configuration, the number of inputs and outputs to the controller 100 is larger than that in the above-mentioned embodiment, and precise control is performed as shown in the flow chart of FIG. 7, for example. In FIG. 7, first, in step 201, the apparatus is started, and in step 202
At the same time, the initialization is performed, and the softening and melting temperature T ₀ of the material of the resin molded part 40, the allowable value of the height of the burr 42, and the initial values of the driving speeds of the motors ₈ and 32 are set. Next, in step 203, the drive mechanism 9 is driven and the resin molded component 40 is automatically placed between the centers 2 and 3.

Next, in step 204, the resin molded component 40 is driven to rotate at least one revolution, and the height of the burr 42 is read based on the measured data of the displacement sensor S1 at that time, and in step 205, the height is read. Various operating conditions of the deburring device are set. That is, the heating temperature of the contactor 20 by the electric heating device 21, the driving speed of the motors 8 and 32, the spring 33 by the biasing force adjusting mechanisms 51, 52,
The urging force of 34 and the urging force of the solenoid 35 are automatically set according to the height of the burr 42, for example, based on a map stored in the memory of the controller 100. Then, it is determined whether or not the actual operating states are within the predetermined permissible ranges, and if they deviate, the electric heating devices 2
1 etc. are driven and adjusted within an allowable range.

Specifically, in step 206, it is judged whether or not the absolute value of the difference between the temperature T detected by the temperature sensor S2 and the predetermined temperature Tk is less than or equal to a set value α, and if it exceeds the set value α, Is the controller 100 in step 207.
The electric current supplied to the electric heating device 21 from is changed. Then, when the value becomes equal to or less than the set value α, the routine proceeds to step 208, where it is judged whether or not the detected pressure P of the pressure sensor S3 is equal to the set value Pk. If not, the exciting current of the solenoid 35 is adjusted at step 209, The biasing force is adjusted.
Although omitted here, the urging forces of the springs 33 and 34 are also appropriately adjusted by the urging force adjusting mechanisms 51 and 52. Then, in step 210, the motor 8 is driven and the phase sensors S4 and S5 are reset until the contact 20 reaches the position of the burr 42.

Then, in step 211, the motor 8,
32 is driven, and the contact 20 comes into contact with the resin molded component 40 while the resin molded component 40 rotates, and moves along a predetermined locus. During this time, the burr 42 is heated and pressed to melt and fuse with the surface of the resin molded component 40. In this case, since the positions of the burr 42 can be detected by the phase sensors S4 and S5, precise control such as increasing the biasing force of the solenoid 35 each time the contact 20 reaches the vicinity of the burr 42 is possible.

Next, in step 212, the height H of the burr 42 at that time is detected, and in step 213, the set value H
k, and if it is determined to be less than k, step 214
Then, the motors 8 and 32 are stopped and the resin molded component 40 is removed in step 215. When it is determined in step 213 that the burr height H exceeds the set value Hk, it is further determined in step 216 whether the elapsed time t exceeds the set time t _0. Judged) and end. On the other hand, if the set time is t ₀ or less, each set value is changed in step 217 and then the process returns to step 205 and the subsequent processing is repeated. That is, in the present embodiment, when the height of the burr 42 does not fall below the set value Hk within the preset set time t ₀ ,
The device is configured to shut down automatically.

The resin molding part 40 was subjected to burr treatment under the following conditions by the above-described burr treatment device, and measurement was performed using a contact surface roughness meter and observation using a stereoscopic microscope. (1) Test object: Cylindrical piston shaped resin molded part using glass fiber reinforced nylon engineering plastic material (softening point temperature> 300 ° C, diameter = 18 m
m, wall thickness = 2 mm) (2) Contact: Cemented carbide, column with diameter = 1.5 mm (3) Energizing force of contact: 10 N (4) Relative velocity between contact and test surface: Direction of rotation;
Approximately 85 cm / sec, axial direction; Approximately 1.9 mm / sec (While rotating the molded resin part at 900 rpm, bring the contactor into contact with the resin surface and move it axially at a speed of approximately 2 mm / sec for approximately 1 cm, (Separated from the resin surface.) (5) Temperature near tip of contact: 100 ° C to 400
Conducted every 50 ° C between ° C

As shown in FIG. 6, the above-mentioned measurement results show that the height of the burr portion is about 30 μ to 5 μ, regardless of the surface temperature of the contact. The experimental results in other cases are substantially the same as those in FIG. On the other hand, according to the observation with the stereoscopic microscope, the effect of increasing the surface temperature of the contact tip portion is remarkable, and the temperature of 200
Below ° C, the burr was in a state of being mechanically peeled off, and although there were no continuous sharp projections, small irregularities on the surface and loosening of glass fibers were observed. However, it was confirmed that when the surface temperature of the contact exceeds 200 ° C., the surface condition after the burr treatment gradually becomes smooth, and at 350 ° C. or higher, it becomes so smooth that no trace is left.

As described above, according to this embodiment, the burr generated along the parting line of the resin-molded component is extremely simple and the original or even smoother surface condition of the resin-molded component is secured. be able to. Further, the time for performing such a treatment varies depending on the shape and size of the resin molded part, but in the embodiment of FIG. 4, the time for attaching / detaching to / from the apparatus is only about 5 seconds or less. The impact on product prices is also extremely small.

In the above embodiment, the height of the burr 42 is measured, and predetermined control is performed according to the measurement result. However, by measuring the width of the burr 42, the size of the burr 42 can be determined. It may be estimated. Further, in the above embodiment, the burr 42 in the groove 41 is treated, but it is also possible to treat all the burrs including the burr 42 on the general surface (cylindrical surface) of the resin molded component 40. . The support mechanism of the arm 11 is not limited to the above-described embodiment, but may be a structure that supports the arm 11 slidably in the vertical direction.

[0049]

Since the present invention is configured as described above, it has the following effects. That is, in the deburring apparatus of the present invention according to claim 1, the relative moving means and the rotation driving means both act on the resin molded component while the contact is heated and biased toward the resin molded component. Since the contacts are configured to move relative to each other, the burr of the resin molded component can be reliably heated and melted, and the outer surface of the resin molded component can be formed smoothly. Thus, according to the present invention, it becomes possible to use a resin material in a field that has been considered extremely difficult to manufacture in the past, such as a resin-molded piston and a rotary shaft, and in a wide range of fields including hydraulic-related equipment. Not only can product performance be improved, but price can be greatly reduced.

Further, in the deburring apparatus according to the second aspect, any one of the temperature, the contact pressure and the relative speed of the contact is adjusted by the measuring means and each adjusting means according to the size of the burr. Therefore, it is possible to easily and appropriately respond to changes in processing conditions and the like.

Further, in the deburring device according to the third aspect of the present invention, the contact device is heated and biased toward the resin molded component by the support device, the cam device, and the first and second motors. Since the contact is configured to move relative to the resin molded part in the axial direction and the direction orthogonal thereto, the burr of the resin molded part can be heated and melted reliably, and the outer surface of the resin molded part can be smoothed. Can be formed. Moreover, this burr treatment can be performed automatically and in a short time.

Further, in the deburring apparatus according to the fourth aspect, the displacement sensor and the adjusting means adjust the temperature of the contact, the contact pressure, and the driving speeds of the first and second motors according to the height of the burr. Since any one of them is adjusted, it is possible to easily and appropriately respond to changes in processing conditions and the like.

[Brief description of drawings]

FIG. 1 is a plan view of a deburring device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional front view of the deburring device according to the embodiment of the present invention.

FIG. 3 is a circuit diagram showing a configuration of a controller in the burr processing apparatus according to the embodiment of the present invention.

FIG. 4 is a plan view of a deburring device according to another embodiment of the present invention.

FIG. 5 is a partial cross-sectional front view of a deburring device according to another embodiment of the present invention.

FIG. 6 is an enlarged sectional view showing a deburring portion in a deburring device according to another embodiment of the present invention.

FIG. 7 is a flowchart showing processing by the burr processing apparatus according to another embodiment of the present invention.

FIG. 8 is a cross-sectional view of a tandem master cylinder of a vehicle brake device to which a resin molded component to be processed according to an embodiment of the present invention is applied.

FIG. 9 is a cross-sectional view showing a part of a tandem master cylinder of a vehicle brake device to which a resin molded component to be treated in one embodiment of the present invention is applied.

FIG. 10 is a perspective view of a resin molded component to be processed in an example of the present invention.

[Explanation of symbols]

 2, 3 Center (supporting device) 8 Motor 11 Arm (supporting member) 13, 14 Shaft 15 Cam follower 20 Contactor 21 Electric heating device (heating means) 30 Cam device 31 Rotating cam 32 Motor 35 Solenoid (biasing device) 40 Resin molding Parts 41 Groove 42 Burr 60 Displacement detection device 100 Controller S1 Displacement sensor S2 Temperature sensor S3 Pressure sensor S4, S5 Phase sensor S6 Acceleration sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masaru Kondo 28, 1 Higashiyashiki, Tsukiji-machi, Kariya city, Aichi Prefecture, Aiko Co., Ltd. Local Sanyo Manufacturing Co., Ltd.

Claims (4)

[Claims] 1. A burr treatment device for a resin molded part, wherein the burr is heat-treated on a resin molded part having a burr on its outer surface to smoothly form the outer surface of the resin molded part. A contactor arranged at a position in contact with the burr, a heating means for heating the contactor to a substantially melting temperature of the resin molded part, and an urging means for urging the contactor toward the resin molded part, Relative moving means for relatively moving one of the resin-molded component and the contactor along the burr at least with respect to the other, and one of the resin-molded component and the contactor relative to the other. A deburring device for resin-molded parts, comprising: a rotation driving means for rotating. 2. A measuring means for measuring the size of the burr of the resin molded part, an urging force adjusting means for adjusting the urging force of the urging means according to a measurement result of the measuring means, and a measurement of the measuring means. A heating temperature adjusting means for adjusting the heating temperature of the heating means according to the result, and a speed adjusting means for adjusting the moving speed by the relative moving means and the rotating speed by the rotation driving means according to the measurement result of the measuring means. The deburring device for resin-molded parts according to claim 1, further comprising at least one of the adjusting means. 3. A burr treating apparatus for a resin molded part, wherein the burr is heat-treated on a resin molded part having a burr on the outer surface to smoothly form the outer surface of the resin molded part. A support device for rotatably supporting an axis parallel to the first motor, a first motor for driving the resin molded component to rotate about the shaft, and a position for contacting at least the burr of the resin molded component. A contactor which is disposed and whose contact portion is formed of a material having a hardness higher than that of the resin molded part; and a support member which supports the contactor so as to be movable in horizontal and vertical directions with respect to the resin molded part. An urging device for urging the support member in a direction in which the contactor comes into contact with the resin-molded component, and the support member so that the contactor moves in a predetermined region horizontally and vertically along the burr. To guide A deburring device for resin-molded parts, comprising: a cam device, a second motor that drives the cam device, and an electric heating device that heats the contacts to substantially the melting temperature of the resin-molded part. 4. A displacement sensor for measuring the height of the burr of the resin molded part, an urging force adjusting means for adjusting the urging force of the urging device according to a measurement result of the displacement sensor, and a measurement of the displacement sensor. At least a heating temperature adjusting means for adjusting the heating temperature of the electric heating device according to the result and a speed adjusting means for adjusting the driving speed of the first and second motors according to the measurement result of the displacement sensor. The deburring device for resin molded parts according to claim 3, further comprising one adjusting means.