JP5325039B2 - Deburring method - Google Patents

Description

  The present invention relates to a burr processing method for removing burrs generated during welding or bonding.

  Conventionally, an automatic deburring machine has been used to remove burrs generated on the surface of a synthetic resin member when a pair of synthetic resin members are welded or bonded together. The automatic deburring machine is provided with a sensor for detecting burrs, and the position, shape, size, and the like of burrs generated on the surface of the synthetic resin member are detected by the sensor for detecting burrs. ing. Since the burr detection sensor needs to grasp the shape of the burr, it is constituted by a shape sensor that can measure the shape of the detection target.

  This automatic deburring machine is intended to cut only the burrs generated on the surface of the synthetic resin member based on information such as the shape and size of the burrs detected by the shape sensor.

  An example of this burr detection sensor is shown in Patent Document 1.

Japanese Unexamined Patent Publication No. Sho 62-113055

  By the way, the generation | occurrence | production aspect of a burr | flash, such as the shape of the burr | flash which generate | occur | produced, the magnitude | size of a burr | flash, changes with molding by welding or adhesion | attachment. For this reason, as shown in FIG. 7, the burr | flash B which generate | occur | produced on the synthetic resin member surface may be in the state which covers the surface of a synthetic resin member.

  In this case, even if an attempt is made to detect the position, shape, size, etc. of the burr by the shape sensor S1 constituting the burr detection sensor S, the surface of the synthetic resin member is covered with the burr B. The base and the surface of the synthetic resin member cannot be accurately grasped, and the protruding amount (size) and shape of the burr B from the synthetic resin member cannot be accurately detected.

  For this reason, when the automatic deburring machine performs the burr B cutting process based on the inaccurate detection information, a part of the surface of the synthetic resin member may be scraped or the burr B may remain. There has been a problem that an appropriate burr processing cannot be performed due to the failure.

  The present invention has been made in view of the above-described conventional problems. The object of the present invention is to provide a burr process that can reliably perform an appropriate burr process when joining synthetic resin members by welding or adhesion. It is to provide a method.

  In order to solve the above problems, the burr processing method of the present invention has the following configuration.

In the present invention, the joining surface 12 of the first synthetic resin member 1 and the joining surface 22 of the second synthetic resin member 2 are brought into contact with each other and the members 1 and 2 are pressurized and welded or bonded together. This is a burr processing method for removing the burrs B protruding from the surface F of the synthetic resin member during welding or bonding. The first synthetic resin member 1 includes a main bonding surface 13 to which the synthetic resin members 1 and 2 are bonded, and a first protruding from the surface F of the first synthetic resin member 1 provided along the main bonding surface 13. 1 cutting margin 11. The main joint surface 13 and the one side surface 14 of the first cutting allowance portion 11 constitute a joint surface 12 of the first synthetic resin member 1. Further, the second synthetic resin member 2 is protruded from the main joint surface 23 to which the synthetic resin members 1 and 2 are joined, and the surface F of the second synthetic resin member 2 provided along the main joint surface 23. The second cutting allowance portion 21 is provided. The main joint surface 23 and the one side surface 24 of the second cutting allowance portion 21 constitute a joint surface 22 of the second synthetic resin member 2. After the joining surface 12 of the first synthetic resin member 1 and the joining surface 22 of the second synthetic resin member 2 are brought into contact with each other and the members 1 and 2 are pressurized and welded or bonded together, Using the shape sensor S1 that detects the protruding tip surface of the cutting allowance 11 or the protruding tip surface of the second cutting allowance 21 as the reference surfaces 16 and 26, based on the detection information of the shape sensor S1, the reference surface 16, 26, the deburring tool C is moved by a predetermined dimension to remove the first cutting allowance portion 11 and the second cutting allowance portion 21, thereby joining the first synthetic resin member 1 as described above. The burr B generated when the surface 12 and the joint surface 22 of the second synthetic resin member 2 are welded or bonded together is removed together with the first cutting edge portion 11 and the second cutting edge portion 21. .

  With such a configuration, it is only necessary to always remove the first machining allowance portion 11 and the second machining allowance portion 21 when performing the burr processing. That is, even if the shape or size of the burr B changes for each welding or adhesion, it is only necessary to remove the first machining allowance 11 and the second machining allowance 21, so that the necessary removal by burr processing is performed. The amount can always be constant.

  According to the present invention, when the burr treatment is performed after the synthetic resin members are bonded to each other by welding or adhesion, the removal amount necessary for the burr treatment can be always constant. For this reason, if the burr processing method of the present invention is carried out, a part of the surface of the synthetic resin member will not be scraped off or burrs will not remain, and appropriate burr processing can be performed reliably. Will be able to.

It is a schematic side view just before reading a burr | flash generation | occurrence | production part with a shape sensor which shows one Embodiment of this invention. It is a schematic side view just before performing the process by a deburring tool same as the above. It is a schematic side view which shows the example which uses a different deburring tool. It is a perspective view explaining the resin toilet bowl which is an application example of this invention. It is a sectional side view same as the above. It is principal part sectional drawing explaining the example of application of the burr processing method of this invention in a resin toilet same as the above, (a) shows welding with a bowl part and a rim | limb part, (b) shows a rim | limb part and a skirt part, (C) is a figure which shows the state after a burr | flash process. It is the schematic for demonstrating a prior art example.

  The present invention will be described below with reference to the accompanying drawings.

  As an example embodiment of the present invention, FIG. 1 shows a state immediately before performing the burr processing of the present invention. 1 shows that the first synthetic resin member 1 and the second synthetic resin member 2 are brought into contact with each other on the joining surfaces 12 and 22 (welding surfaces 12a and 22a) provided on the members 1 and 2, respectively. It is welded and joined after contact.

  The first synthetic resin member 1 is preferably made of a thermoplastic resin such as acrylic synthetic resin, ABS resin (Acrylonitrile butadiene styrene), PBT (Polybutyleneterephtalate). As shown in FIG. 1, a main joining surface 13 that is welded and joined to the second synthetic resin member 2 is formed at the end of the first synthetic resin member 1. In the present embodiment, since the synthetic resin members 1 and 2 are joined together by welding, the joining surface is hereinafter referred to as a welding surface and the joining surface is referred to as a main welding surface.

  The surface F of the first synthetic resin member 1 in the direction along the main welding surface 13a (the portion indicated by the broken line in the figure indicates the surface of the synthetic resin member after deburring. A first cutting allowance portion 11 is provided so as to protrude from a portion (including a portion indicated by a broken line). The first cutting allowance 11 is formed continuously over the entire length of the main welding surface 13a. The surface 14 facing the second synthetic resin member 2 in the first cutting allowance 11 (the surface contacting the second synthetic resin member 2 at the time of joining) is flush with the main welding surface 13a. Yes. The surface 14a facing the second synthetic resin member 2 in the first cutting margin 11 and the main welding surface 13a constitute a welding surface 12a.

  Similarly, thermoplastic resin such as acrylic synthetic resin, ABS resin (Acrylonitrile butadiene styrene), PBT (Polybutyleneterephtalate) is suitably used for the second synthetic resin member 2 as well. It is done. Similar to the first synthetic resin member 1, a main welding surface 23 a that is welded and joined to the first synthetic resin member 1 is formed at the end of the second synthetic resin member 2.

  A second cutting allowance 21 is projected from the surface F of the second synthetic resin member 2 in the direction along the main welding surface 23a. The second cutting allowance 21 is continuously formed over the entire length of the main welding surface 23a. The surface 24 facing the first synthetic resin member 1 in the second cutting allowance 21 (the surface in contact with the second synthetic resin member 2 at the time of joining) is flush with the main welding surface 23a. Yes. The surface 24 facing the first synthetic resin member 1 in the second cutting margin 21 and the main welding surface 23a constitute a welding surface 22a.

  In addition, it is preferable that the projecting dimension u from the synthetic resin member surface F of the cutting margins 11 and 21 and the thickness dimension t are both configured in the range of 0 to 100 mm.

  Since the welding surface 12a of the first synthetic resin member 1 and the welding surface 22a of the second synthetic resin member 2 are in pressure contact with each other, both the members 1 and 2 are welded. Be joined. For this welding, a known welding method such as hot plate welding, laser welding, vibration welding, induction welding or the like is suitably used. In performing welding, the first machining allowance 11 and the second machining allowance 21 protrude from the surface F of the synthetic resin member, and the machining allowances 11 and 21 are in the pressurizing direction. Therefore, it is possible to accurately position the jig with respect to the jig by using the protruding first cutting allowance 11 and the second cutting allowance 21. And can be reliably pressurized. For this reason, it is possible to perform welding with higher accuracy.

  When the first synthetic resin member 1 and the second synthetic resin member 2 are joined to each other by welding, as shown in FIGS. 1 and 2, the first cutting edge portion 11 and the second cutting edge portion 21 Burrs B are generated outward from the welding surfaces 12a and 22a. In the present embodiment, the protruding end surfaces of the first cutting edge portion 11 and the second cutting edge portion 21 are joined so as to be substantially flush with each other in the welded state. The direction to do changes with construction. For this reason, the protruding direction of the burr B cannot be predicted, and of course, the size and shape cannot be predicted.

  In the present embodiment, an automatic deburring machine is used for performing the burr processing of the synthetic resin members 1 and 2 in which the burrs B are generated.

  In this automatic deburring machine, the shape and size of the burrs B of the synthetic resin members 1 and 2 fixed to the jig are detected by the deburring detection sensor S, and the deburring tool C is used to detect the burrs. Processing is performed. The burr detection sensor S is composed of one or a plurality of shape sensors S1 that can measure the shape of the detection object.

  First, what the 1st synthetic resin member 1 and the 2nd synthetic resin member 2 were welded joined is fixed to the jig | tool of an automatic deburring machine. At this time, the first or second cutting allowance portion 21 can be used for positioning in fixing the synthetic resin member to the jig. Since the 1st and 2nd cutting allowance parts 21 protrude from the surface F of the synthetic resin members 1 and 2, it can attach to a jig with sufficient accuracy.

  Next, the shape of the burr generation part is read by the shape sensor S1. At this time, the shape sensor S1 does not read the shape of the burr B but reads the shapes of the first cutting allowance 11 and the second cutting allowance 21. That is, the projecting tip surfaces (surfaces on which burrs B are generated) of the first and second cutting margins 11 and 21 are used as the reference surfaces 16 and 26, and at least the reference surfaces 16 and 26 and the surfaces of the synthetic resin members 1 and 2. The distance from F is read by this shape sensor S1.

  And based on this detection or calculation information, the 1st cutting edge part 11 and the 2nd cutting edge part 21 are removed with the deburring tool C, the surface F of the synthetic resin members 1 and 2, and the 1st cutting edge part 21 The part where the cutting allowance part 11 and the second cutting allowance part 21 are provided is arranged to be flush with each other or smoothly continuous. Specifically, the deburring tool C is moved from the reference surfaces 16 and 26 detected by the shape sensor S1 by a predetermined dimension that is detected or calculated, and the first cutting allowance 11 and the second burr B are both. The machining allowance portion 21 is removed (see the shape indicated by the broken line in FIGS. 2 and 3).

  As the deburring tool C used at this time, a tool for grinding by rotating a grindstone or the like, rotating or vibrating a cutter, or cutting by laser processing can be used as appropriate. Moreover, you may use what changed the shape of the processing blade according to the shape after finishing (refer FIG. 3).

  In this way, the portion where the first cutting edge portion 11 and the second cutting edge portion 21 after the burr processing are provided does not leave a trace in appearance. However, when the cross-section is observed, it can be seen that the skin layers of the synthetic resin members 1 and 2 provided so as to cover the core layer are removed, and the core layer is exposed on the external surface. In addition, when the synthetic resin members 1 and 2 are molded by injection molding, it is possible to confirm the flow of the resin to the machining allowance portion, thereby confirming that the machining allowance portions 11 and 21 are provided. . Further, when the portion provided with the machining allowances 11 and 21 including the machining allowances 11 and 21 is thick, the machining allowances 11 and 21 of the synthetic resin members 1 and 21 are positioned. Therefore, it can be seen that the machining margins 11 and 21 were provided by checking the sink.

  Thus, since the 1st cutting allowance part 11 or the 2nd cutting allowance part 21 was provided in synthetic resin members 1 and 2, even if the generation amount and generation state of burr B change for every molding, the 1st cutting allowance part 11 The burr B can be processed only by removing the cutting allowance part 11 and the second cutting allowance part 21. In addition, since the projecting tip surfaces of the machining margins 11 and 21 are reference surfaces 16 and 26 for reading the shape by the shape sensor S1, the feed dimension of the deburring tool C can be set regardless of the size of the burr B. The dimensions from the reference surfaces 16 and 26 to the synthetic resin member surface F can always be made. In other words, even if the shape and size of the burrs B change with each welding, the necessary amount of cutting can be made constant by the burring process, so the burring process is performed using an automatic deburring machine. However, a part of the surface F of the synthetic resin members 1 and 2 is not scraped off and the burrs B are not left, and an appropriate burring process can be surely performed.

  In addition, even if the 1st cutting edge part 11 and the 2nd cutting edge part 21 are removed as mentioned above, since this welding surface 13a, 23a remains, it is firmly by this welding surface 13a, 23a. Both the synthetic resin members 1 and 2 remain joined. For this reason, even if the 1st machining allowance part 11 and the 2nd machining allowance part 21 are removed, welding of members 1 and 2 does not come off.

  In the above embodiment, the first synthetic resin member 1 and the second synthetic resin member 2 are joined by welding, but may be joined by adhesion using an adhesive. In this case, the burrs B are formed by curing the adhesive protruding from the adhesive surfaces that are the joining surfaces 12 and 22 between the first synthetic resin member 1 and the second synthetic resin member 2.

  Further, as described above, the shape of the machining allowance portions 11 and 21 may be such that the one side surfaces 14 and 24 of the machining allowance portions 11 and 21 constitute the welding surfaces 12a and 22a. The shape of the side surfaces 15 and 25 opposite to the one side surfaces 14 and 24 to be configured is not particularly limited. As described above, when a welding machine or an automatic deburring machine is used, if positioning is performed using the cutting margins 11 and 21, a shape suitable for positioning may be used. As in the embodiment shown in the accompanying drawings, if it is configured with a plane substantially perpendicular to the pressing direction, the shape is suitable for positioning and pressing.

  Further, even when the synthetic resin members 1 and 2 are welded to each other, even if both the members 1 and 2 are displaced from each other and joined to each other, if there is a slight error, the cutting margins 11 and 21 are removed from the member surface F. Since it is provided so as to protrude, the cutting margins 11 and 21 can also absorb the error.

  In the above, the burr | flash processing method of an example of this invention was demonstrated. Hereinafter, application examples of the burr processing method of the present invention will be described.

  In this application example, as shown in FIGS. 4 to 6, the burr processing method of the present invention is applied to a resin toilet. The resin toilet of this example includes a bowl portion 4, a skirt portion 5 that covers the bowl portion 4, and a rim portion 6 that is disposed on the upper end portion of the bowl portion 4. Each of the bowl part 4, the skirt part 5 and the rim part 6 is an independent synthetic resin member, and the resin toilet is formed by welding and integrating the divided parts 4, 5, and 6 of these three synthetic resin members. .

  Each of the synthetic resin members 4, 5, and 6 is formed of a resin molded product having a thickness of 3 to 7 mm formed by injection molding, compression molding, or the like. As the molding material, relatively strong acrylic, reinforcing material-containing ABS, PBT, or the like is preferably used. In addition, since each synthetic resin member is comparatively large, it is preferable to perform an annealing process. Further, a hard coat material may be coated to improve the surface quality.

  As shown in FIG. 4, the bowl portion 4 is integrally formed with a drain tube portion 41 projecting rearward from the lower portion of the bowl-shaped portion 42. The upper end surface of the bowl-shaped portion 42 of the bowl portion 4 is the main welding surface 23a (13a), and continues along the outer periphery of the main welding surface 23a (13a) and the entire circumference of the opening of the bowl portion 4. The above-described cutting margin 21 (11) is provided.

  As shown in FIG. 4, the rim portion 6 is formed by integrally connecting the rear end of the front half portion 61 to the upper portion of the rising wall portion 63 formed at the front end of the rear half portion 62. As shown in FIG. 6, the front half portion 61 of the rim portion 6 is mainly composed of a substantially U-shaped U-shaped portion 64 that has an annular shape in plan view and opens outward in a cross section. The upper surface of the U-shaped portion 64 is an upper horizontal piece portion 65, and the upper end surface of the skirt portion 5 is welded to the upper horizontal piece portion 65. Further, an intermediate horizontal piece portion 66 is provided at the intermediate portion of the U-shaped portion 64 to which the upper end of the opening of the bowl portion 4 is welded and joined. The lower surface of the opening tip of the upper horizontal piece portion 65 is a main welding surface 13a (23a) to be joined to the skirt portion 5, and the cutting allowance portion extends along the outer peripheral side of the main welding surface 13a (23a). 11 (21) is provided. Further, the bottom surface of the front end of the middle horizontal piece portion 66 is a main welding surface 23a (13a) to be joined to the bowl portion 4, and the machining margin portion 11 is along the outer peripheral side of the main welding surface 23a (13a). (21) is provided.

  The skirt portion 5 is provided with a draft angle in which the opening diameter gradually increases toward the upper side. The upper end portion of the front half portion 51 that surrounds the outside of the bowl portion 4 of the skirt portion 5 protrudes higher than the rear half portion 52 located at the rear. A main welding surface 23a (13a) is formed over the entire upper end surface of the skirt portion 5, and a cutting allowance 21 (11) is provided along the outer peripheral side of the main welding surface 23a (13a). Yes.

  Such synthetic resin members 4, 5, and 6 are integrated by welding. The parts to which the burr treatment method of the present invention is applied after welding are the joints G, H, and I (dotted line portions in FIG. 5). Is shown). In addition, in the part which each synthetic resin member 4,5,6 contact | abuts, in any case, although watertightly joined by welding or adhesion | attachment, about the location which gave the burr | flash processing method of this invention below Only the explanation will be given.

  In the one-dot chain line portion G, as shown in FIG. 6A, the rim portion 6 corresponds to the first synthetic resin member 1, and the bowl portion 4 corresponds to the second synthetic resin member 2. As described above, when the welding surface 12a (22a) of the rim portion 6 and the welding surface 22a (12a) of the bowl portion 4 are welded, a burr B is generated. This burr B is generated by the automatic deburring machine described above. It is removed together with the first and second cutting margins 11 and 21, and burr processing is performed.

  In the alternate long and short dash lines H and I, the rim portion 6 corresponds to the first synthetic resin member 1, and the skirt portion 5 corresponds to the second synthetic resin member 2. Specifically, as shown in FIG. 6B, when the welding surface 12a (22a) of the rim portion 6 and the welding surface 22a (12a) of the skirt portion 5 are welded, burrs B are generated. However, this burr B is removed together with the first and second cutting margins 11 and 21 by the automatic deburring machine described above, and burr processing is performed. In particular, in the alternate long and short dash line portion H, if a processing blade having a concave blade shape as shown in FIG. 3 is used, a better burr treatment can be performed.

  If such a deburring method is used, even if the deburring tool C is used, a part of the rim 6, bowl 4 or skirt 5 may be scraped off or scratched. Can be prevented, and a highly accurate burr process can be performed. As a result, the product value of the product can be increased.

  In this application example, the rim portion 6 corresponds to the first synthetic resin member 1 and the bowl portion 4 or the skirt portion 5 corresponds to the second synthetic resin member 2, but is not particularly limited. Absent.

  As mentioned above, although the application example of this invention was demonstrated based on the resin toilet, the burr | flash process method of this invention can be similarly applied, if synthetic resin members are joined by welding or adhesion | attachment.

DESCRIPTION OF SYMBOLS 1 1st synthetic resin member 11 1st cutting allowance part 12 Joining surface 12a Welding surface 13 This joining surface 13a This welding surface 16 Reference surface 2 2nd synthetic resin member 21 2nd cutting allowance part 22 Joining surface 22a Welding Surface 23 Main bonding surface 23a Main welding surface 26 Reference surface B Burr C Deburring tool F Surface of synthetic resin member S Sensor for detecting deburring S1 Shape sensor t Thickness dimension u Projection dimension

Claims (1)

The joint surface of the first synthetic resin member and the joint surface of the second synthetic resin member are brought into contact with each other, and the two members are pressed against each other to be welded or bonded together. From the surface of the synthetic resin member during the welding or bonding, A burr processing method for removing protruding burrs,
The first synthetic resin member includes a main bonding surface where the synthetic resin members are bonded to each other, and a first cutting allowance provided along the main bonding surface and protruding from the surface of the first synthetic resin member. The joint surface of the first synthetic resin member is constituted by the main joint surface and one side surface of the first cutting allowance,
The second synthetic resin member includes a main bonding surface where the synthetic resin members are bonded to each other, and a second cutting allowance provided along the main bonding surface and protruding from the surface of the second synthetic resin member. The joint surface of the second synthetic resin member is constituted by the main joint surface and one side surface of the second cutting allowance,
After abutting the joining surface of the first synthetic resin member and the joining surface of the second synthetic resin member and pressurizing and welding the two members to each other,
Using a shape sensor that detects the protruding tip surface of the first cutting allowance or the protruding tip surface of the second cutting allowance as a reference surface, based on the detection information of the shape sensor, a predetermined sensor is used. The deburring tool is moved by the dimension to remove the first cutting allowance and the second cutting allowance, whereby the joint surface of the first synthetic resin member and the second synthetic resin are removed. A burr treatment method characterized in that burrs generated when the joint surface of a member is welded or bonded together are removed together with the first cutting margin and the second cutting margin.

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