JP4586105B2 - Resin product manufacturing system, manufacturing method, resin molding apparatus, and mold - Google Patents

Description

  The present invention relates to a resin product manufacturing system, a manufacturing method, a resin molding apparatus, and a mold that are manufactured by injection molding, compression molding, or the like.

In general, an injection molding technique for molding a resin molded product by injecting a molten resin into a mold at a high pressure is known. In this type of injection molding technology, the resin melted in the mold is injected at a high pressure, so that the pressure opens, for example, the mold, and a thin burr is formed on the mating surface (parting surface) of the fixed mold and the movable mold. Is likely to occur.
Conventionally, a technique has been proposed in which a moving member is provided on a parting surface of a fixed mold or a movable mold and the generation of burrs on the parting surface is suppressed by pressing the moving member against the parting surface (for example, , See Patent Document 1).
On the other hand, conventionally, a cutter blade having a cutting edge portion corresponding to the root of the burr and a copying portion that does not constitute a cutting edge corresponding to the surface portion of the product is provided, and along the root of the burr while vibrating the cutter blade. There has been proposed a deburring device that sends a cutter blade and efficiently removes the burrs (see, for example, Patent Document 2). In addition, a technique has been proposed in which an end mill is inserted into the copying guide member, and the copying guide member is pressed against the workpiece and followed by cutting off the burrs with the end mill (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 7-241890 JP 2008-30251 A JP 2002-239824 A

However, in Patent Document 1, since the mold and the moving member slide in strong contact during resin molding, when molding a resin containing a hard reinforcing agent such as glass fiber or carbon fiber, the mold and the moving member are used. There was a problem that the pain on the slide surface became severe, and the repair interval of the mold was remarkably shortened. In addition, the generation of burrs has not been completely removed, and secondary processing for deburring has always been required. These are similarly problematic even in general resin molded products that do not contain the hard reinforcing agent.
In Patent Documents 2 and 3, when the protrusion height of the burr from the product surface has a certain height, the burr can be removed efficiently. If the protrusion amount is too small, Could not be removed efficiently.
Accordingly, an object of the present invention is to solve the problems of the conventional techniques described above, and to easily manufacture a finished product without burrs in injection molding or the like, a manufacturing method, a manufacturing method, a resin molding apparatus, and a mold Is to provide.

The present invention relates to a convex mold and a concave mold for forming a cavity in a resin product manufacturing system in which an intermediate product is molded by a resin molding machine and burrs of the intermediate product are removed by a burr removing device to manufacture a finished product. has a type, and formed so as to integrate the intermediate product convex mold side during mold opening, mold opening convex so that the clearance between the mating surfaces of the convex mold and concave mold δ increases in step The mating surface of the mold and the concave mold has an inclination θ with respect to the mold opening / closing operation direction, and is continuous with the convex surface where the intermediate product is integrated with the mating surface of the convex mold having the inclination θ. comprising a mold having an accommodating portion for accommodating an overflow resin, by compression molding by injecting a molten resin material in the opening amounts given type in the mold cavity, integrated in the generating direction of the longitudinal burrs Forming an intermediate product that allows the overflow resin Removed by device, to produce a finished product excised the overflow resin is permitted on the intermediate product.
In this specification, a product at a stage where burrs are not removed, which is manufactured by a resin molding machine, is defined as an intermediate product, and a product after removal of burrs is defined as a finished product.
In this case, the burr removing device includes a cutter blade having a cutting edge portion corresponding to the base of the overflow resin and a copying portion that does not constitute a cutting edge corresponding to the surface portion of the intermediate product, while vibrating the cutter blade, The overflow resin integrated with the intermediate product may be cut by sending a cutter blade along the root of the overflow resin.

In these configurations, since the generation of overflow resin is allowed on the parting surface of the intermediate product, the deburring device in the subsequent process can perform efficient deburring by removing the overflow resin. That is, if burrs are generated, the burrs are generated at the tip of the overflow resin, so that the burr removing device can cut off the overflow resin together with the burrs to easily produce a finished product without burrs.
In this case, the resin molding machine may be a general molding machine such as an injection molding machine, a low pressure compression molding machine, a high pressure compression molding machine, a foam molding machine, or a carbon fiber injection molding machine. If it is applied to a foam molding machine, an effect that the burrs can be completely removed together with the overflow resin can be obtained by providing the overflow resin during injection foam molding. Further, by providing the overflow resin with the carbon fiber injection molding machine, for example, an effect is obtained that the burrs can be completely removed together with the overflow resin by a cutter vibrated by ultrasonic waves.
In resin molding by resin molding machines, etc., there are variations in the structure of the molding machine, the mold used for it, resin components, etc., and in particular, it is difficult to supply the optimal amount of resin into the cavity of the mold. Molding becomes unstable even if there is much or less.
In this invention, since the overflow resin accommodating portion is formed in the mold, when the amount of resin is large or small, the amount of overflow resin in the accommodating portion is automatically adjusted, so that the resin amount in the cavity is stable and can be stably molded. .

In this case, the overflow resin may be integrated in the direction in which vertical burrs are generated.
It may be vented through the housing portion of the overflow resin.
If the overflow resin is integrated in the direction in which the vertical burrs are generated, the mold only needs to form an accommodating portion for accommodating the overflow resin on the mating surface of the mold, making the mold easy to manufacture, If the gas is vented through the overflow resin container, the occurrence of burrs due to degassing and defects such as resin burns will concentrate first from the overflow resin part, and this will be removed together with the burrs, leaving defects in the finished product. A resin product can be manufactured without any problems.
Since burrs generated in the intermediate product are removed by the deburring device, it is desirable to generate burrs within the reach of the tools of the deburring device.
The burr generated in the intermediate product described above is set at a predetermined position, for example, a planned range all around the parting line. In order to remove this burr with a deburring device, the above-mentioned planned range is obtained by using a microscope or the like. It is possible to confirm the removal mark of burr.

Further, in a resin product manufacturing method of manufacturing a finished product by forming an intermediate product with a resin molding machine and removing a burr of the intermediate product, the mold has a convex mold and a concave mold that form a cavity, Convex and concave molds are formed so that the intermediate product is integrated on the convex mold side when opened, and the gap δ between the mating surfaces of the convex mold and the concave mold is increased in the mold opening process. It has an inclination θ relative to the mold opening and closing operation direction to the mating surface of the mold, to accommodate the overflow resin continuous to the convex shape surface in which the intermediate product is integrated with the mating surface of the convex shape mold having a slope θ Allowing overflow resin integrated in the direction of vertical burr generation by injecting molten resin material into the cavity of the mold with a predetermined mold opening amount and compression molding using a mold having a housing part A process of forming the intermediate product, and May be provided with a process of manufacturing the finished product by cutting the bar flows resin.
In resin molding equipment that molds intermediate products including burrs to be removed by a burr removal device, it has a convex mold and a concave mold that form cavities, and the intermediate product is integrated on the convex mold side when the mold is opened. The mold opening / closing operation direction is used as a reference for the mating surfaces of the convex mold and the concave mold so that the gap δ between the mating surfaces of the convex mold and the concave mold is increased in the mold opening process . A mold having an accommodating portion for accommodating an overflow resin continuous with a convex surface in which an intermediate product is integrated on a mating surface of the convex mold having an inclination θ An intermediate product allowing the overflow resin integrated in the direction of occurrence of vertical burrs may be formed by injecting a molten resin material into the cavity of the mold with a predetermined mold opening amount and compression molding.
A mold for a resin molding apparatus that molds an intermediate product including burrs to be removed by a deburring apparatus, and has a convex mold and a concave mold that form a cavity. The intermediate product is formed so as to be integrated, and the mold opening and closing operation is performed on the mating surface of the convex mold and the concave mold so that the gap δ between the convex mold and the concave mold is increased in the mold opening process. The housing has an accommodating portion for accommodating overflow resin continuous with the convex surface on which the intermediate product is integrated on the mating surface of the convex mold having the tilt θ with respect to the direction . It is also possible to mold an intermediate product that allows an overflow resin integrated in the direction of occurrence of vertical burrs by injecting a molten resin material into a predetermined mold opening amount and compression molding.

  In the present invention, since the generation of overflow resin is allowed on the parting surface of the intermediate product, the deburring device removes the overflow resin, so that the deburring surface has a clean appearance with a constant appearance shape and is efficient. Can be taken. That is, if burrs are generated, the burrs are generated at the tip of the overflow resin, so that the burr removing device can cut off the overflow resin together with the burrs to easily produce a finished product without burrs.

It is a perspective view showing one embodiment of a deburring system. It is a perspective view which shows the deburring operation | work of a workpiece | work. It is a perspective view which shows the part of a workpiece receiving jig. It is a perspective view which shows an example of the workpiece | work shape before deburring. It is a perspective view which shows an example of the workpiece | work shape after deburring. It is sectional drawing of a metal mold | die. A is a partially enlarged view of the mold, and B is a cross-sectional view showing a state in which the mold is opened. A is a cross-sectional view of the mold, B is a partially enlarged view of the mold, and C is a cross-sectional view illustrating a state where the mold is also opened. A is a sectional view of a mold, and B is a plan view showing a mating surface of the mold. It is sectional drawing of the metal mold | die which shows another embodiment. It is a front view which shows one Embodiment of a deburring apparatus. It is a side view which shows the attachment part of a cutter blade. It is a perspective view which expands and shows the deburring operation | work of a workpiece | work. It is sectional drawing of the front-end | tip part of a cutter blade. It is a front view which shows another embodiment of a deburring apparatus.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 100 denotes a resin product manufacturing system. The resin product manufacturing system 100 includes a resin molding machine 101, an articulated robot 103 having a workpiece gripping device and a deburring device at an arm tip, and a workpiece 130 (see FIG. 4) as an intermediate product before deburring. The workpiece receiving mechanism 105 to be loaded, the burr discharge conveyor 107 for discharging the removed burr 132 to the outside of the system, and the finished product discharge conveyor 109 for discharging the workpiece 131 (see FIG. 5) as a finished product after deburring to the outside of the system. And have. Although illustration is omitted, a storage rack for storing the finished product may be provided instead of the finished product discharge conveyor 109.

  The resin molding machine 101 has a drive mechanism 101A, a hopper portion 101B storing a resin material, a resin supply screw portion 101C, and a molding portion 101F on a base 101G. The molding portion 101F includes a fixing portion 101D and a fixing portion 101D. A movable portion 101E is provided. The molten resin supplied from the hopper portion 101B side through the screw portion 101C is molded in the molding portion 101F to become a resin product (intermediate product described in detail later). In the molding part 101F, when the movable part 101E moves backward with respect to the fixed part 101D, molds (not shown) provided in the parts 101D and 101E are opened, and molten resin is supplied into the molds through the gate. The molten resin 101 is moved forward by the movable portion 101E and compressed between the molds, and an intermediate product is formed.

The multi-joint robot 103 has joints 103A to 103F, and a mechanism unit 140 in which a work gripping device and a deburring device are integrated is attached to the arm tip 103G of the most advanced joint 103F.
As shown in FIG. 2, the mechanism portion 140 includes a columnar base portion 141 attached to the arm tip portion 103G, a substantially U-shaped holder 142 connected to the base portion 141, and a first surface of the holder 142. A workpiece gripping hand portion 143 and a workpiece suction pad portion 144 disposed on the second surface of the holder 142 are provided, and the suction pad portion 144 is connected via a connection hose (not shown). Connected to a vacuum source. The work gripping hand portion 143 operates with an air cylinder (not shown).
The deburring device 1 is attached to the third surface (lower surface in the figure) of the holder 142, and a flat blade cutter blade 10 is fixed to the tip of the holder 142, and the workpiece blade 130 on the workpiece receiving mechanism 105 is deburred by the cutter blade 10. 132 is removed.

The workpiece receiving mechanism 105 includes a mechanism table 110 and a workpiece receiving jig 112 connected to the mechanism table 110 with a plurality of bolts 111. As shown in FIG. For example, a receiving groove that fits the protrusion of the workpiece 130 is formed in the placement portion 112A. The workpiece 130 is placed on the workpiece placement portion 112A by fitting the convex portion of the workpiece 130 into the receiving groove so as to drop from the solid line to the imaginary line.
A suction port 112B for suction is formed in the workpiece placement unit 112A, and the suction port 112B is connected to a vacuum source via a connection hose 112C. When the workpiece 130 is placed on the workpiece placement unit 112A, the workpiece is sucked. 130 is fixed. The shape of the workpiece mounting portion 112A is determined in accordance with the convex shape of the workpiece 130, the burr shape generated on the workpiece, or the like. At least the burr generated on the workpiece 130 can be removed by the cutter blade 10, that is, the cutter The shape is set so as not to hinder the burr removal operation by the blade 10.
The workpiece mounting unit 112A includes a support table 112D. When the workpiece shape to be molded is changed by changing the mold of the resin molding machine 101, the workpiece mounting unit corresponding to the workpiece shape is integrally formed from the support table 112D. The workpiece is replaced with another workpiece receiving jig 112 having the portion 112A. In the deburring system 100, the setup is changed by exchanging the workpiece receiving jig 112, and the setup time is shortened.

FIG. 6 is a cross-sectional view of the resin molding machine 101. 7A is a partially enlarged view of the workpiece 130 shown in FIG. 6 (when compression is completed), and FIG. 7B is a cross-sectional view showing the state where the mold shown in FIG. 7A is opened (when injected). 6 and 7 are different in form from the work in FIGS. 1 to 5, but for the sake of convenience of explanation, hereinafter, they will be described as the same form.
As shown in FIG. 6, the resin molding machine 101 described above includes a mold 155 including a fixed mold 151 provided in the fixed portion 101D (see FIG. 1) and a movable mold 153 provided in the movable portion 101E. The movable mold 153 moves the movable part 101E toward the fixed mold 151 of the fixed part 101D by the drive mechanism (or servo motor drive mechanism) having a direct pressure type or toggle type structure by hydraulic pressure, and compresses the work 130. Mold.

  In the present embodiment, as shown in FIGS. 7A and 7B, the movable mold 153 includes an accommodation portion 153B that accommodates an overflow resin 130A corresponding to a so-called vertical burr on the mating surface 153A of the mold 153. The accommodating portion 153B is concave and is formed over a portion corresponding to the entire periphery of the workpiece 130 on the mating surface 153A of the movable mold 153. It is preferable that the depth T is 0.05 mm or more and the length L is 0.05 mm or more. Each dimension is appropriately determined depending on the properties of the resin material and the size of the product.

  At the time of resin molding, referring to FIG. 6, the movable mold 153 is separated from the fixed mold 151 by a predetermined dimension in the opening direction with the parting lines P and L as a boundary (see FIG. 7B), and the molded product space (cavity) A predetermined amount of molten resin material is injected into 135. Thereafter, the movable mold 153 is moved toward the fixed mold 151, the parting lines P and L are aligned, and the mold between the fixed mold 151 and the movable mold 153 is clamped (see FIG. 7A). 130 is compression molded.

As shown in FIG. 7B, when the mold opening amount is “t” (for example, t = 0.5 mm or more), there is a draft θ between the fixed mold 151 and the movable mold 153 (see FIG. 7A). ) Due to () occurs. Therefore, in the mold clamping process by the fixed mold 151 and the movable mold 153, gas is vented from the tapered surface (mating surface) having an inclination θ (for example, 1 ° to 3 °) of each mold. This degassing is performed through the resin portion of the overflow resin 130A accommodated in the accommodating portion 153B at the time of resin molding. Therefore, if resin burning or the like occurs, it occurs in the resin portion of the overflow resin 130A. Since the resin 130A is removed in a deburring process, which will be described later, no resin burn or the like remains on the finished product.
In the above configuration, the molten resin material may be injected into the molded product space 135 with a low pressure, and thereafter, the mold between the fixed mold 151 and the movable mold 153 may be clamped with a low pressure. In this case, the resin molding machine 101 is not limited to the above configuration, and may be a normal injection molding machine that injects a molten resin into a mold at a high pressure and clamps the high pressure.

  The overflow resin 130A formed by the accommodating portion 153B described above is a portion that is cut out in a deburring process described later, and the depth T and the length L are not limited to the above dimensions, and the material of the resin material, etc. The depth T and the length L are set appropriately according to the conditions or suitable for excision with a deburring device. If the depth T and the length L are too large, the resin is wasted, and if it is too small, deburring becomes difficult. By the way, in resin molding by the resin molding machine 101, there are variations in the performance of the molding machine, the mold used therefor, the resin component, etc., and in particular, it is difficult to supply the optimum amount of resin into the cavity of the mold. Molding becomes unstable regardless of whether the amount is large or small. In this configuration, since the overflow resin accommodating portion 153B is formed in the mold, if the amount of resin injected into the mold varies, the overflow resin fills the interior of the accommodating portion 153B and varies to the smaller amount. In this case, the amount of overflow resin entering the storage portion 153B is reduced, and the dispersion of the resin injection amount is automatically adjusted by the overflow resin amount, so that the resin amount in the cavity is stable and stable molding is possible.

In addition, since the overflow resin is allowed in this configuration, it is not necessary to suppress the generation of burrs during molding. As described above, the molten resin material is injected into the molded product space 135 at a low pressure, and then fixed. When the mold 151 and the movable mold 153 are clamped at a low pressure, that is, when low pressure compression molding is performed, a resin molded product with higher quality can be manufactured.
And if the molding machine which clamps between each metal mold | die 151,153 with a low pressure is used, the required clamping force of this molding machine can be suppressed to 1 / 4-1 / 5 compared with the past.
In this configuration, the overflow resin 130 </ b> A corresponds to a conventional so-called burr and is synonymous with the burr 132. However, by allowing the overflow resin 130A, the subsequent burr removal is almost complete, the finished resin molded product is clean, and there is a great difference in its purpose.

FIG. 8 shows another embodiment of the resin molding machine.
As shown in FIG. 8A, the resin molding machine 101 includes a fixed mold 159 provided in the fixed part 101D (see FIG. 1), a mold including a movable mold 158 and a movable mold 157 provided in the movable part 101E. 155. Reference numeral 181 denotes a hydraulic cylinder shaft coupled to the movable mold 157, and the movable mold 157 is opened or moved in the compression direction via the shaft 181. PW is a compression allowance. In the present embodiment, as shown in FIG. 8B (at the time of compression completion) and FIG. 8C (at the time of injection), the work 150 is a product with a bead 150B, and the movable mold 157 is the mold 157. The mating surface 157A includes an accommodating portion 157B that accommodates an overflow resin 150A corresponding to a so-called vertical burr.
The accommodating portion 157B has a concave shape, and is formed over a portion corresponding to the entire periphery of the workpiece 150 on the mating surface 157A of the movable mold 157. The depth T is suitably 0.05 mm or more and the length L is 0.05 mm or more, for example, as in the above embodiment. Each dimension is appropriately determined depending on the properties of the resin material and the size of the product.

FIG. 9 shows a so-called horizontal burr form. In FIG. 9, the same parts as those in FIG.
In this case, the fixed mold 151 includes an accommodating portion 151B that accommodates an overflow resin 130A corresponding to a so-called lateral burr on the mating surface 151A of the mold 151. The accommodating portion 151 </ b> B has a concave shape, and is formed over a portion corresponding to the entire periphery of the workpiece 130 on the mating surface 151 </ b> A of the fixed mold 151. The depth T is, for example, 0.05 mm or more, and the length L is, for example, 0.05 mm or more. The above dimensions are appropriately determined depending on the properties of the resin material and the size of the product. That is, the overflow resin 130A formed in the accommodating portion 151B is a portion that is cut out in a deburring process described later, and its depth T and length L are not limited to the above dimensions, and are cut out by a deburring device. Suitable depth T and length L are set. If the depth T and the length L are too large, the resin is wasted, and if it is too small, deburring becomes difficult.

Further, as shown in FIG. 9B, a plurality of gas vent holes 160 are formed in the mating surface 151A of the fixed mold 151 so as to be orthogonal to the direction in which the accommodating portion 151B extends. The gas vent holes 160 are gas vent holes for discharging the gas in the cavity 135, and are formed on the entire surface of the mating surface 151A at appropriate intervals in the circumferential direction.
In the present embodiment, the gas is vented through the overflow resin 130A accommodated in the accommodating portion 151B during resin molding.
Therefore, if a resin burn or the like occurs, it occurs in a portion of the overflow resin 130A, and the overflow resin 130A is removed in a deburring process described later, so that the resin burn or the like remains on the finished product. There is nothing.
In this case, as shown in FIG. 10, the work 150 is a product with a bead 150B, and the accommodation surface 153B for accommodating the overflow resin 150A corresponding to the horizontal burr is provided on the mating surface 153A of the movable mold 153. May be.

In this resin molding machine 101, any of the above-described molds 155 is used, and at the time of resin molding, a molten resin material is injected into a molded product space (cavity) 135 at a low pressure or a high pressure, and then a fixed mold and a movable mold. The space is clamped at low or high pressure.
When the workpieces 130 and 150 are resin-molded through this stage, an intermediate product in which the overflow resins 130A and 150A are integrated with the parting surfaces of the workpieces 130 and 150 is molded. In this case, so-called conventional burrs are generated at the peripheral edges of the tips of the overflow resins 130A and 150A.

FIG. 11 shows the deburring device 1.
The deburring device 1 is attached to the third surface (lower surface in the drawing) of the holder 142 as described above. The deburring device 1 has a support 3 fixed to a third surface, and an air-driven slide table device 4 is fixed to the support 3. The slide table device 4 includes a fixed portion 4a fixed to the support body 3, support portions 4b and 4c fixed to both ends of the fixed portion 4a, a shaft 4d provided between the support portions 4b and 4c, and a shaft 4d. And a slidable slide portion 5. The slide portion 5 can reciprocate in a predetermined linear direction (arrow X direction), and the linear direction is a direction in which a lower surface of a so-called flat blade 10 can be pressed against a workpiece. 4e is a stopper. One support portion 4b is provided with an air supply port 4f, the other support portion 4c is provided with an air discharge port 4g, and the air supply port 4f has a pressure regulator (not shown) for adjusting the pressure of supply air. ) Is connected.

  One end of the ultrasonic transducer holder 6 is attached to the slide unit 5. The other end of the ultrasonic transducer holder 6 is formed with a semi-annular holder portion 6a. Between the holder portion 6a and another semi-annular holder portion 6b, the column of the ultrasonic transducer 7 is formed. The ultrasonic transducer 7 is attached to the other end of the ultrasonic transducer holder 6 by sandwiching the portion 7a and connecting the holder portions 6a and 6b with bolts. A cutter blade 10 is fixed to the tip of the ultrasonic transducer 7 as shown in FIG. An ultrasonic unit (not shown) is connected to the ultrasonic vibrator 7 via a cord 7b (see FIG. 11), and is driven by the ultrasonic unit, and the cutter blade is driven according to the vibration of the ultrasonic vibrator 7. 10 vibrates ultrasonically in a direction (arrow C direction) substantially orthogonal to the feed direction (arrow B direction) of the cutter blade 10. In this configuration, the slide portion 5 is constantly urged to the right by the air pressure from the air supply port 4f until it abuts against the right stopper 4e in FIG. 11, and the cutter blade 10 abuts against the workpiece. When a load due to a reaction force is applied, the slide portion 5 slides on the shaft 4d to the left in the drawing against the air pressure according to the degree of the load, whereby the cutter blade 10 Will float. The sliding range is regulated by the stopper 4e on the left in the drawing. The slide table device 4 constitutes a floating mechanism, and the cutter blade 10 at the tip of the deburring device 1 is movable in the direction of arrow A, that is, placed in a floating state with respect to a workpiece (resin molded product) described later.

FIG. 13 shows the cutter blade 10 during the deburring operation.
In FIG. 13, for convenience of explanation, a workpiece 130 having a shape different from that of the workpiece 130 (see FIG. 2) is illustrated.
The cutter blade 10 has a cutter blade body portion 10C on the front end side, and the cutter blade body portion 10C includes a front end surface 10F and a rear end surface 10R. The rear end surface 10R extends substantially parallel to the extension line of the ultrasonic transducer 7, and the front end surface 10F recedes from the extension line of the ultrasonic transducer 7 perpendicular to the feed direction B with a receding angle φ. . The cutter blade 10 is fixed to the ultrasonic vibrator 7 by either brazing or screwing.

The cutter blade 10 can cut off the overflow resins 130A and 150A of the workpieces 130 and 150 formed using the above-described mold 155 or the like. For example, if it is FIG. 10, it cuts along the cut line L1, if it is FIG. 7, it cuts along the cut line L2, and if it is FIG. 8, it should just cut along the cut line L3.
The resin molded product that is the work 130 is various, such as a care bed part, a copier part, a tool box, a heat insulating resin box, an automobile air spoiler, an automobile visor, an automobile center pillar, and an automobile interior sheet. . The cutter blade 10 abuts on the base (base) of the overflow resin 130 </ b> A (burr 132) formed on the partition line 121, for example. The front end face 10F of the cutter blade 10 has a curved surface corresponding to the root of the overflow resin 130A, for example, a cutting edge portion 10A having a width W of about several millimeters and a cutting edge corresponding to each surface portion 123A, 123B of the workpiece 130. And a copying section 10B having a shape. The width W of the cutting edge portion 10A is generally about 0.6 to 1 mm, but can be appropriately changed according to the shape of the burr formed on the workpiece.

FIG. 14 is a cross-sectional view including the cutting blade portion 10A of the cutter blade.
In this configuration, the distal end portion of the blade 10A1 formed at the foremost portion of the cutting edge portion 10A (the portion indicated by hatching) is an R curved surface portion 10B1 of the copying portion 10B formed on the front end surface 10F of the cutter blade 10. , And ends at a position where the lower surface of the cutter blade main body 10C intersects. That is, the tip of the blade 10A1 moves backward in the direction opposite to the feed direction (arrow B direction) of the cutter blade 10 until the curved surface portion 10B1 of the copying portion 10B intersects the lower surface of the cutter blade body portion 10C. ing. In the cutting blade portion 10A of this configuration, the position of the tip portion of the blade 10A1 coincides with the lower surface of the cutter blade main body portion 10C. Therefore, the tip portion of the blade 10A1 enters deeply into the root of the overflow resin 130A, and the overflow resin 130A. Can be removed from the root.
In addition, even if the copying portion 10B is in contact with the workpiece, the shape is unstable as in the case of a resin component, or the burr formed in a curved shape is cut off. However, the cutter blade 10 does not bite into the material too much, and the occurrence of problems such as broken blades can be suppressed.

The lower surface of the blade 10A1 of the cutting blade portion 10A extends in alignment with the lower surface of the cutter blade main body portion 10C, and a leveling portion 10A2 is formed on the lower surface. The leveling portion 10A2 is in contact with the workpiece 130 at a substantially constant pressure depending on the balance of air pressure in the slide portion 5. Thereby, the leveling part 10A2 presses the base portion of the overflow resin 130A left by the cutting edge part 10A against the work 130 side so that the vicinity of the partition line 121 of the work 130 is smoothed.
Further, the lower surface 10C1 of the cutter blade main body portion 10C configured as a portion further deeper than the leveling portion 10A2 of the cutter blade main body portion 10C is given a slight angle θ and is separated from the work 130. The rear end surface 10R of the cutter blade 10 is in a state of being completely separated from the work 130.
As a result, only the portion corresponding to the leveling portion 10A2 is in contact with the workpiece 130 in the cutter blade 10, and the cutting edge portion 10A and the copying portion 10B are prevented from being lifted by hitting other portions. be able to.

Next, the deburring operation will be described.
When the deburring device 1 is operated, for example, an operator actually moves the arm of the articulated robot 103 once or several times to perform direct teaching for storing path information corresponding to the movement path of the arm. Alternatively, a method of automatically generating route information using shape information created by a design system such as a CAD system using an automatic route generation system is employed. However, the path information obtained by the direct teaching or the path automatic generation system is not necessarily a correct path for each work 130 in the deburring operation when there is a large variation in the actual work 130 to be deburred.
On the other hand, the deburring device 1 of the present configuration has the floating mechanism, and can deburr the cutter blade 10 against the workpiece with a slightly higher pressing force than planned, and performs copying control. Little work is required to correct the position. Therefore, the substantial processing time can be shortened.

In this configuration, as shown in FIG. 1, the multi-joint robot 103 takes out the workpiece (resin molded product) 130 before deburring from the resin molding machine 101 using the hand unit 143 shown in FIG. 2 according to direct teaching. The workpiece is transferred to the workpiece receiving jig 105. Overflow resin 130A is allowed for workpiece 130 of the intermediate product before deburring. Next, the articulated robot 103 removes the overflow resin 130A of the workpiece 130 on the workpiece receiving jig 105 using the cutter blade 10 of the deburring device 1 shown in FIG. In this case, examples of the work 130 include a resin tool box, a resin heat insulation box, a resin component for a copying machine, and a resin component for an automobile.
For such a workpiece, the multi-joint robot 103 has six-axis joints 103A to 103F so that the direction and the driving direction of the cutter blade 10 of the arm tip 103G are optimized along the removal path of the overflow resin 130A. To control the operation.
In this case, needless to say, the slide portion 5 of the arm tip portion 103G is in a floating state with respect to the workpiece 130.

In this configuration, when the arm tip 103G is driven based on path information obtained by direct teaching or the like, the pressure applied to the air supply port 4f is controlled, and the cutter blade 10 is applied to the workpiece 130 with a predetermined pressure. It is being pressed. The pressure applied to the air supply port can be automatically switched according to the posture of the cutter blade 10, and is always constant regardless of the posture of the cutter blade 10.
In this state, the ultrasonic transducer 7 attached to the ultrasonic transducer holder 6 is driven to vibrate the cutter blade 10 with an amplitude of, for example, about 30 to 50 μm, while the copying unit 10B is moved to each surface portion 123A, It moves along 123B, and the cutter blade 10 is sent along the root of the overflow resin 130A formed on the partition line of the work 130 to cut the burrs, and at the same time, the surface after the cutting is leveled. In addition, it is not limited to an ultrasonic wave, For example, the vibration provision with an amplitude of about 10-150 micrometers may be sufficient. Finally, the articulated robot 103 takes out the workpiece 131 as a finished product after removing the overflow resin 130A from the workpiece receiving jig 105 using the suction pad portion 144 shown in FIG. It is discharged and discharged out of the system through the conveyor 109. Further, the overflow resin 130A removed by the deburring device 1 is discharged onto the deburring conveyor 107 through the inclined hopper 133 and discharged outside the system.

In this configuration, the deburring device 1 can produce a finished product 131 having no secondary burrs after the removal of the overflow resin 130A.
Therefore, the manual deburring work that has been performed manually is not required, and the deburring system can be completely automated, thereby reducing the cost of the molded product. In addition, since the overflow molding resin 130A is allowed to be generated in the mold of the resin molding machine 101 after fully automated, an expensive molding machine that suppresses the generation of burrs is not necessary. Also, the cost of the molded product can be reduced.

  In this resin product manufacturing system 100, overflow resin 130A is allowed at the intermediate product stage, so-called burrs are generated at the tip of overflow resin 130A, and deburring device 1 has a cutting edge corresponding to the root of overflow resin 130A. A cutter blade 10 having a portion 10A and a copying portion 10B that does not constitute a cutting edge corresponding to the surface portion of the intermediate product, and the cutter blade 10 is fed along the root of the overflow resin 130A while vibrating the cutter blade 10 Since the overflow resin 130A integrated with the intermediate product is excised together with burrs, a finished product without burrs can be easily manufactured.

FIG. 15 shows another embodiment of the deburring device 1.
In the present embodiment, the main body 215 of the tool holding means TH is attached to the arm tip 103G of the articulated robot 103, and the pressing means 231 is attached to the main body 215. The pressing means 231 includes an air slide table 232, and a tool holder 200 is attached to the tip of the air slide table 232. The tool holder 200 includes a motor 201, a support member 210, a spring 212, a support member 209, guide posts 207 and 208, a spring 211, and a holder fixing member 206. The holder fixing member 206 has a collar 205 of the tool holder 204. It is fixed. An end mill 203 penetrates inside the tool holder 204, and the end mill 203 is fixed to the chuck 202 of the output shaft of the motor 201. A V-shaped opening 204 </ b> A that the end mill 203 faces is formed on the outer periphery of the tool holder 204. In this deburring apparatus 1, the product form is taught to the articulated robot 103, and the tool holder 204 is pressed against the workpiece by the operation of the air slide table 232, and faces the V-shaped opening 204 </ b> A of the tool holder 204. Then, the burrs of the workpiece are removed by the end mill 203. In this case, the tool holder 204 is floatingly supported by the springs 211 and 212, and the V-shaped wall surface of the opening 204A functions as a copying portion.

  In the present embodiment, as described above, overflow resin 130A is integrally formed on the parting surface of the intermediate product, so that overflow resin 130A can be efficiently cut by end mill 203.

  The deburring device 1 is not limited to the above embodiments, and it goes without saying that any deburring device can be applied. In the above embodiment, the workpiece is deburred while the cutting tool is supported on the robot arm tip and the workpiece is fixed. However, the present invention is not limited to this. For example, the workpiece is supported on the robot arm tip. Then, the robot may be taught, and the workpiece may be deburred as taught, with the cutting tool fixed. When fixing a cutting tool, the tool is preferably a floating support. In this case, the robot supports the workpiece, and the tool is provided on a part of the gantry to perform processing as taught by the robot.

DESCRIPTION OF SYMBOLS 1 Deburring apparatus 10 Cutter blade 100 Resin product manufacturing system 101 Resin molding machine 130,150 Work 130A, 150A Overflow resin 151 Fixed mold 153 Movable mold 155 Mold 151A, 153A Matching surface 151B, 153B Housing part 160 Gas vent hole

Claims (6)

In a resin product manufacturing system that forms an intermediate product with a resin molding machine and removes burrs of the intermediate product with a burr removing device to manufacture a finished product,
The resin molding machine has a convex mold and a concave mold that form a cavity, and is formed so that an intermediate product is integrated on the convex mold side when the mold is opened. and so that the clearance between the mating surfaces of the concave mold δ increases, has an inclination θ relative to the mold opening and closing operation direction to the mating surface of the convex mold and concave mold, convex having a slope θ comprising a mold having an accommodating portion for accommodating an overflow resin intermediate product the mating surface of the form die is continuous in a convex shape surface to be integrated, the molten resin in the opening amounts given type in the mold cavity By injecting and compressing the material, it forms an intermediate product that allows overflow resin integrated in the direction of occurrence of vertical burrs,
A resin product manufacturing system, wherein the burr removing device cuts the overflow resin allowed for the intermediate product to manufacture a finished product.   The resin product manufacturing system according to claim 1, wherein gas is vented through the overflow resin container. In a resin product manufacturing method of forming an intermediate product with a resin molding machine and removing a burr of the intermediate product to manufacture a finished product,
It has a convex mold and a concave mold that form a cavity, and is formed so that the intermediate product is integrated on the convex mold side when the mold is opened, and the convex mold and concave mold are formed in the mold opening process . convex mold so that the clearance between the mating surfaces δ increases and has an inclination θ relative to the mold opening and closing operation direction to the mating surface of the concave mold, the mating surface of the convex shape mold having a slope θ Using a mold having an accommodating part that accommodates continuous overflow resin on the convex surface where the intermediate product is integrated , the molten resin material is injected into the cavity of the mold with a predetermined opening amount and compressed. The process of molding an intermediate product that allows overflow resin integrated in the direction of occurrence of vertical burrs by molding,
A process for producing the finished product by cutting off the overflow resin allowed for the intermediate product.   The resin product manufacturing method according to claim 3, wherein gas is vented through the overflow resin container. In a resin molding device that molds intermediate products containing burrs to be removed by a burr removal device,
It has a convex mold and a concave mold that form a cavity, and is formed so that the intermediate product is integrated on the convex mold side when the mold is opened, and the convex mold and concave mold are formed in the mold opening process . convex mold so that the clearance between the mating surfaces δ increases and has an inclination θ relative to the mold opening and closing operation direction to the mating surface of the concave mold, the mating surface of the convex shape mold having a slope θ A mold having an accommodating portion for accommodating an overflow resin continuous on a convex surface on which an intermediate product is integrated ,
By injecting a molten resin material into the mold cavity with a predetermined mold opening amount and compression molding, it is possible to mold an intermediate product that allows the overflow resin integrated in the direction of occurrence of vertical burrs. A resin molding device. A mold for a resin molding apparatus for molding an intermediate product including burrs to be removed by a burr removing apparatus,
It has a convex mold and a concave mold that form a cavity, and is formed so that the intermediate product is integrated on the convex mold side when the mold is opened, and the convex mold and concave mold are formed in the mold opening process . convex mold so that the clearance between the mating surfaces δ increases and has an inclination θ on the basis of the mold opening and closing operation direction to the mating surface of the concave mold, the mating surface of the convex shape mold having a slope θ It has an accommodating part that accommodates the overflow resin continuous on the convex surface where the intermediate product is integrated ,
A mold that can mold an intermediate product that allows overflow resin integrated in the direction of occurrence of vertical burrs by injecting molten resin material into the cavity with a predetermined mold opening amount and compression molding .

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