Manufacturing equipment for attaching parts to molded resin products
The apparatus addresses thermal shrinkage issues in resin molded products by using a positioning unit, sensor, and mounting device to measure and adjust for dimensional changes, enabling precise component attachment.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- INOAC CORP
- Filing Date
- 2024-12-26
- Publication Date
- 2026-07-08
Smart Images
Figure 2026113919000001_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a manufacturing apparatus for attaching components to a resin molded product.
Background Art
[0002] Patent Document 1 discloses a manufacturing apparatus for attaching a separate component to a resin member.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] A resin molded product is formed by injection molding in which a resin raw material heated and melted is injected into a cavity formed in a mold and cooled and solidified. After demolding, the resin molded product also shrinks due to cooling, and this shrinkage of the resin molded product due to cooling is called thermal shrinkage. The thermal shrinkage of the resin molded product decreases as the temperature decreases due to cooling, and the dimensions of the resin molded product finally converge within a predetermined tolerance. In such an operation of attaching a component to a resin molded product, in order to shorten the cycle time, the component may be attached without waiting for the cooling of the resin molded product to complete. Therefore, it is desirable that a manufacturing apparatus for attaching a separate component to a resin molded product can accurately attach the component to resin molded products with different degrees of progress of thermal shrinkage. The present disclosure provides a novel manufacturing apparatus capable of accurately attaching a separate component to a resin molded product.
Means for Solving the Problems
[0005] A manufacturing apparatus according to one aspect of the present disclosure is a manufacturing apparatus for attaching a component to a resin molded product, comprising: a positioning unit for positioning the resin molded product; a sensor for measuring the dimensions of the resin molded product; a specification unit for identifying the mounting position of the resin molded product for attaching the component according to the dimensions; and a mounting device for attaching the component to the resin molded product according to the mounting position, wherein the sensor measures the dimensions in the positioning direction of the positioning unit. [Effects of the Invention]
[0006] According to this disclosure, a novel manufacturing apparatus is available that can accurately attach separate parts to resin molded products. [Brief explanation of the drawing]
[0007] [Figure 1] A schematic diagram showing the manufacturing apparatus of the first embodiment. [Figure 2] A top view and a cross-sectional view showing a resin molded product of the first embodiment. [Figure 3] An explanatory diagram illustrating deformation of resin molded products due to thermal shrinkage. [Figure 4] A table showing an example of a candidate data set. [Figure 5] An explanatory diagram illustrating the installation process using the manufacturing apparatus of the first embodiment. [Figure 6] A schematic diagram showing the manufacturing apparatus of the second embodiment. [Figure 7] Enlarged view of section B in Figure 6. [Figure 8] A schematic diagram showing the manufacturing apparatus of the third embodiment. [Modes for carrying out the invention]
[0008] <First Embodiment> Hereinafter, one embodiment of the present disclosure will be described with reference to the drawings. In the following description, the width direction X, the depth direction Y, and the height direction Z will be used.
[0009] As shown in Figure 1, manufacturing apparatus 1 is a manufacturing apparatus for attaching a separate component C to a resin molded product M. Before describing manufacturing apparatus 1, the resin molded product M and component C handled by manufacturing apparatus 1 will be described.
[0010] Figure 2(a) is a top view of the resin molded product M, and Figure 2(b) is a cross-sectional view showing the assembled state of part C in cross-section AA of Figure 2(a). The resin molded product M in this embodiment is a resin component used as an interior component of a vehicle, but is not limited to this, and may be a resin component attached to a skeletal structure or panel forming an aircraft, ship, building, or the like. Part C is a resin clip attached to the resin molded product M, but is not limited to this, and may be a bolt, screw, or other component made of metal or other material.
[0011] As shown in Figure 2(a), the resin molded product M has a first side 10a, a second side 10b opposite the first side 10a, and a third side 10c that connects the first side 10a and the second side 10b and is longer than the first side 10a.
[0012] The resin molded product M includes a base 11 and a pedestal 12 to which a part C can be attached. The base 11 is plate-shaped and extends in the width direction X and the depth direction Y. The shape of the base 11 can be appropriately changed according to the interior of the vehicle to which the resin molded product M is attached and the mounting position. The base 11 has a design surface 11a that forms the design of the resin molded product M and a mounting surface 11b opposite to the design surface 11a. The pedestal 12 protrudes in the height direction Z from the mounting surface 11b of the base 11. Multiple pedestals 12 may be provided, and in this embodiment, the pedestals 12 include a first pedestal 12a, a second pedestal 12b, a third pedestal 12c, a fourth pedestal 12d, and a fifth pedestal 12e, which are arranged at predetermined intervals from each other in the width direction X and the depth direction Y. However, the number of pedestals 12 can be appropriately changed according to the shape and dimensions of the resin molded product M. In the following section, the configuration of the base 12 will be described using the first base 12a as an example. The second base 12b to the fifth base 12e have the same configuration as the first base 12a, so redundant explanations will be omitted. As shown in Figure 2(b), the base 12 has a top portion 120 spaced apart in the height direction Z from the mounting surface 11b, a side wall 121 connecting the top portion 120 and the mounting surface 11b, and a slit 122 provided in the top portion 120.
[0013] The resin molded product M may be formed from a thermoplastic resin. Examples of thermoplastic resins include ABS resin, polypropylene (PP), polyethylene (PE), ASA resin (Acrylate Sthrene Acrylonitrile), polystyrene (PS), acrylic resin, polycarbonate (PC), polyamide, polyethylene terephthalate (PET), and modified polyphenylene ether (modified PPE).
[0014] The component C includes a shaft portion 13a inserted into the slit 122 of the pedestal 12 and a fixing portion 13b connected to the shaft portion 13a for fixing the resin molded product M to the vehicle. In a state where the component C is attached to the pedestal 12 (hereinafter referred to as the attached state), the shaft portion 13a is disposed within the slit 122 of the pedestal 12, and the fixing portion 13b protrudes in the height direction Z from the top 120 of the pedestal 12.
[0015] Returning to FIG. 1, the manufacturing apparatus 1 includes a base 20, a positioning unit 2, a sensor 4, an attachment device 6, and a controller 8.
[0016] The positioning unit 2 positions the resin molded product M at the measurement position P1. The positioning unit 2 is disposed on the base 20. The positioning unit 2 includes a fixed jig 21 fixed to the base 20 and a movable jig 22 movable with respect to the base 20.
[0017] A part of the resin molded product M including the first side 10a is placed on the fixed jig 21. The fixed jig 21 has a first placement portion 21a, a vertical wall portion 21b connected to the first placement portion 21a and extending in the height direction Z, and a first fixing portion 21c. The first placement portion 21a is fixed to the base 20 and the resin molded product M is placed thereon. The first placement portion 21a includes a first placement surface S1 that extends in the width direction X and the depth direction Y. The first placement surface S1 faces the design surface 11a of the resin molded product M. The vertical wall portion 21b intersects the first placement surface S1 and includes a reference surface S2 that extends in the depth direction Y and the height direction Z. The first fixing portion 21c is provided on the first placement portion 21a and fixes the resin molded product M to the fixed jig 21. The first fixing portion 21c of the present embodiment is a suction pad that adsorbs to the design surface 11a of the resin molded product M, but the fixing method is not limited thereto. The first fixing portion 21c can switch between an adsorption state in which the resin molded product M is fixed to the fixed jig 21 and a non-adsorption state in which the resin molded product M is not fixed.
[0018] A part of the resin molded product M including the second side 10b is placed on the moving jig 22. The moving jig 22 has a second placing part 22a including a second placing surface S3, a driving part 22b, and a second fixing part 22c. The second placing surface S3 extends in the width direction X and the depth direction Y and faces the design surface 11a of the resin molded product M. The driving part 22b is arranged between the second placing part 22a and the base 20 and drives the second placing part 22a along the positioning direction H1 on the base 20. The positioning direction H1 is the direction toward the reference surface S2, and in this embodiment, the positioning direction H1 is the opposite direction of the width direction X. Thereby, the moving jig 22 can be moved relative to the fixing jig 21 fixed to the base 20. The driving part 22b of this embodiment is driven by, for example, an actuator not shown, but the moving method is not limited to this. The second fixing part 22c is provided on the second placing part 22a and fixes the resin molded product M to the moving jig 22. The second fixing part 22c of this embodiment is a suction pad that sucks the design surface 11a of the resin molded product M, similar to the first fixing part 21c, but the fixing method is not limited to this. The second fixing part 22c can switch between a suction state of fixing the resin molded product M to the moving jig 22 and a non-suction state of not fixing the resin molded product M.
[0019] The sensor 4 measures the dimensions of the resin molded product M. The sensor 4 is fixed to the base 20 and is fixed at a position away from the positioning part 2. In this embodiment, the sensor 4 is arranged to be separated from the positioning part 2 in the width direction X. The sensor 4 is a distance sensor that measures the distance to the object. The sensor 4 of this embodiment is a non-contact laser distance sensor, but it is not limited to this, and a distance sensor using millimeter waves, ultrasonic waves, or others can be appropriately selected. The sensor 4 measures the distance to the resin molded product M located at the measurement position P1. In this embodiment, the sensor 4 measures the distance L1 to the second side 10b of the resin molded product M in the positioning direction H1 (in this embodiment, the opposite direction of the arrow X).
[0020] The mounting device 6 is positioned opposite the mounting surface 11b of the resin molded product M, and under the control of the controller 8, it attaches the component C to the resin molded product M, which has been positioned at the measurement position P1 by the positioning unit 2, based on the mounting position D1. The mounting position D1 is position information indicating the mounting position of the component C on the resin molded product M, and in this embodiment, it includes position information relating to the arrangement of the multiple bases 12 of the resin molded product M.
[0021] The mounting device 6 has a frame portion 60 and an arm portion 61. The frame portion 60 is driven by an actuator and is movable in the width direction X, depth direction Y, and height direction Z. The arm portion 61 is positioned on the frame portion 60 and is driven by an actuator and is movable relative to the frame portion 60 in the width direction X, depth direction Y, and height direction Z. The mounting device 6 moves the frame portion 60 relative to the resin molded product M, and at the same time, the arm portion 61 grips the fixing portion 13b of the component C and moves it relative to the base 12 to which the component C is to be mounted. As a result, the arm portion 61 inserts the shaft portion 13a of the component C into the slit 122 of the base 12 of the resin molded product M, and attaches the component C to the resin molded product M. Multiple arm portions 61 may be provided so that multiple components C can be attached simultaneously. In this embodiment, the arm portion 61 includes five arm portions 61 corresponding to the five bases 12a to 12e of the resin molded product M, and attaches the component C to each base 12. Figure 2 shows the third arm portion 61c for attaching component C to the third base 12c, the fourth arm 61d for attaching component C to the fourth base 12d, and the fifth arm portion 61e for attaching component C to the fifth base 12e.
[0022] The controller 8 is electrically connected to the positioning unit 2, the sensor 4, and the mounting device 6, and controls them. The controller 8 has a storage unit 80 and a locating unit 81.
[0023] The storage unit 80 stores a group of candidate data D. The group of candidate data D includes a group of candidate dimensions D2 for the resin molded product M, and a group of candidate mounting positions D3 corresponding to the group of candidate dimensions D2. The group of candidate dimensions D2 is a group of data relating to the dimensions of multiple resin molded products M, estimated according to the degree of thermal shrinkage of the resin molded product M. In this embodiment, one candidate dimension D2 for the resin molded product M corresponds to one candidate mounting position D3. Therefore, a corresponding candidate mounting position D3 is automatically determined for one candidate dimension D2.
[0024] The identification unit 81 identifies the mounting position D1 of the resin molded product M for attaching part C to the dimensions of the resin molded product M. Specifically, the identification unit 81 measures the dimensions of the resin molded product M in the positioning direction H1 (width direction X) by the positioning unit 2. In this embodiment, the identification unit 81 measures the length of the third side 10c as the dimension of the resin molded product M in the positioning direction H1. The identification unit 81 obtains the distance L1 measured by the sensor 4 and estimates the dimensions of the resin molded product M from the distance L1. In this embodiment, the identification unit 81 obtains the length of the third side 10c of the resin molded product M by subtracting the distance L1 from the distance L2 from the sensor 4 to the reference surface S2 of the fixing jig 21 in the width direction X, and estimates the dimensions of the resin molded product M from the length of the third side 10c. Furthermore, the identification unit 81 selects one candidate D2 of dimensions that approximates the estimated dimensions of the resin molded product M from the candidate data group D. As a result, the identification unit 81 identifies a candidate mounting position D3 corresponding to the candidate dimension D2 as mounting position D1. The identified mounting position D1 is transmitted to the mounting device 6.
[0025] Figure 3 is a schematic diagram that exaggerates the dimensional variation due to thermal shrinkage of the resin molded product M. In Figure 3, the amount of heat and deformation is shown by a dashed line for resin molded product M1, which has a small degree of deformation due to shrinkage in the short direction, and by a solid line for resin molded product M2, which has a larger degree of deformation due to thermal shrinkage compared to resin molded product M1. As shown in Figure 3, thermal shrinkage generally deforms by shrinking from the outer periphery towards the center, and is larger in the longitudinal direction. In the resin molded product M of this embodiment, the dimension in the width direction X is larger than the dimension in the depth direction Y. Therefore, the amount of deformation due to thermal shrinkage is greatest at the third side 10c, which is longer than the first side 10a and the second side 10b. Furthermore, by measuring the dimensions of the area where the amount of deformation due to thermal shrinkage is greatest, the dimensions of the entire resin molded product M, and consequently the positional relationship of the multiple bases 12, can be estimated. Therefore, in this embodiment, by obtaining the dimension of the third side 10c, which has the largest deformation, as a representative value, it is possible to estimate the overall dimensions of the resin molded product M and, consequently, the amount of deformation due to thermal shrinkage, as well as accurately estimate the relative positions of the multiple bases 12.
[0026] For example, in the case of a resin molded product M1, the identification unit 81 can identify the mounting position D1 of each base 12 corresponding to the candidate dimension D2 of the resin molded product M by selecting one candidate dimension D2 of the candidate data group D stored in the storage unit 80 based on the length L3a of the third side 10c (see dashed line) (see Figure 1 for both). Figure 4 is an example of the candidate data group D of this embodiment. As shown in Figure 4, the candidate data group D includes multiple combinations of a candidate dimension D2 of the resin molded product M and a candidate mounting position D3 which is a combination of the width direction X and depth direction Y coordinates of the first base 12a to the fifth base 12e estimated based on the candidate dimension D2 of the resin molded product M. The identification unit 81 selects a candidate dimension D2 of the resin molded product M that approximates the resin molded product M1 from among such candidate data group D and identifies the candidate mounting position D3 corresponding to the candidate D2 as the mounting position D1. Furthermore, in the resin molded product M2, the specific unit 81 can identify the mounting position D1 (see dashed line) of each base 12 corresponding to the candidate dimension D2 of the resin molded product M by selecting one candidate dimension D2 of the resin molded product M from the candidate data group D stored in the storage unit 80, based on the length L3b of the third side 10c, which is the dimension of the resin molded product M in the positioning direction H1 of this embodiment. As described above, in this embodiment, by obtaining the dimension of the third side 10c, which has the greatest deformation due to thermal shrinkage, the dimensions of the entire resin molded product M, and consequently the positional relationship of the multiple bases 12, can be estimated. As a result, the controller 8 can accurately control the mounting device 6 to the mounting position D1.
[0027] Next, using Figure 5, we will explain the method for attaching part C to the resin molded product M using the manufacturing apparatus 1 of the first embodiment.
[0028] As shown in Figure 5(a), in the mounting method of this embodiment, first, the resin molded product M formed by injection molding is placed on the positioning unit 2. The resin molded product M is positioned with its design surface 11a facing the first mounting surface S1 of the fixing jig 21 and the second mounting surface S3 of the moving jig. A portion of the resin molded product M, including the first side 10a, is placed on the first mounting portion 21a of the fixing jig 21. A portion of the resin molded product M, including the second side 10b, is placed on the second mounting portion 22a of the moving jig 22. At this time, the resin molded product M may be positioned with a gap s between it and the reference surface S2 in the width direction X.
[0029] Furthermore, as shown in Figure 5(b), the controller 8 controls the drive unit 22b of the moving jig 22 to move the moving jig 22 along the positioning direction H1 (arrow X direction) until the first side 10a of the resin molded product M is pressed against the reference surface S2. At this time, the controller 8 may move the moving jig 22 along the positioning direction H1 by a predetermined distance set in advance according to the width dimension X of the resin molded product M. Not limited to this, the controller 8 may, for example, provide a pressure sensor on the vertical wall portion 21b of the fixing jig 21 to determine whether or not the resin molded product M is in contact with the reference surface S2, and move the moving jig 22 until it is determined that the resin molded product M is in contact with the reference surface S2. When the resin molded product M moves to the measurement position P1, the controller 8 switches the second fixing portion 22c of the moving jig 22 to a suction state and fixes the resin molded product M at the measurement position P1. As a result, the resin molded product M is positioned at the measurement position P1 by the positioning unit 2. Furthermore, the controller 8 switches the first fixing part 21c of the fixing jig 21 and the second fixing part 22c of the moving jig 22 to a suction state. As a result, the resin molded product M is fixed to the measurement position P1 positioned by the positioning unit 2.
[0030] Next, the controller 8 controls the sensor 4 to acquire the distance L1. Furthermore, the identification unit 81 of the controller 8 identifies the mounting position D1 based on the candidate data group D stored in the memory unit 80. The controller 8 transmits the identified mounting position D1 to the mounting device 6. Furthermore, the controller 8 controls the mounting device 6 to move the arm 61 to the position corresponding to the mounting position D1 and attach the part C to the base 12 of the resin molded product M.
[0031] Finally, the controller 8 controls the positioning unit 2 to control the first fixing part 21c of the fixing jig 21 and the second fixing part 22c of the moving jig 22 to a non-adherent state. As a result, the resin molded product M is released from its fixation and can be moved from the manufacturing apparatus 1. With these steps completed, the manufacturing apparatus 1 can attach the part C to the resin molded product M.
[0032] In this embodiment, a movable jig 22 having a second mounting portion 22a on which a part of the resin molded product M is placed has been described as an example, but the disclosure is not limited thereto. The manufacturing apparatus 1 may include, for example, a fixed jig 21 having a first mounting portion 21a on which the entire resin molded product M is placed, and a movable jig 22 that is movable relative to the fixed jig 21. Specifically, the resin molded product M is placed entirely on the first mounting portion 21a of the fixed jig 21, and the movable jig 22 may press the end of the resin molded product M on the first mounting portion 21a toward the reference surface S2 of the fixed jig 21. As a result, the resin molded product M moves by sliding on the first mounting surface S1 of the first mounting portion 21a, and is pressed against the reference surface S2 by the movable jig 22 and positioned.
[0033] <Second Embodiment> Next, a second embodiment of the present disclosure will be described with reference to Figures 6 and 7. In the following, a configuration different from the first embodiment will be described, and redundant explanations will be omitted. As shown in Figure 6, in the resin molded product M of this embodiment, the third side 10c has a length of three times or more the length of the first side 10a and the second side 10b.
[0034] The base 12 of the resin molded product M of this embodiment includes a first base 12a, a second base 12b, a third base 12c, a fourth base 12d, a fifth base 12e, and a sixth base 12f, which are arranged at predetermined intervals from each other in the width direction X and the depth direction Y.
[0035] The positioning unit 102 positions the resin molded product M at the measurement position P2. The positioning unit 102 includes a first force-applying device 23 fixed to the base 20, and a second force-applying device 24 positioned adjacent to the first force-applying device 23 in the width direction X and fixed to the base 20.
[0036] The first force-applying device 23 includes a first mounting section 23a extending in the width direction X and the depth direction Y, a first force-applying section 23b, and a third fixing section 23c. A portion of the resin molded product M, including the first side 10a, is placed on the first mounting section 23a. As shown in Figure 7, the first force-applying section 23b has a first rotating shaft 230 extending in the height direction Z and driven by an actuator, and a first pressing section 231 extending from the first rotating shaft 230 by a first length R1. The first rotating shaft 230 is rotatable about a first center C1 as the center of rotation. The first pressing section 231 is movable along a first direction H21 between an initial position Qa shown by a dashed line and a pressing position Qb shown by a solid line, by driving the first rotating shaft 230. In this embodiment, the first direction H21 is the rotational direction toward the resin molded product M about the first center C1. The first pressing section 231 presses the side wall 121 of the first base 12a with a first force F1 toward the outside of the resin molded product M (in the opposite direction of arrow X) at the pressing position Qb. Returning to Figure 6, the third fixing section 23c is provided on the first mounting section 23a and fixes the resin molded product M to the first force application device 23. The third fixing section 23c can switch between an adsorption state in which the resin molded product M is fixed to the first force application device 23 and a non-adsorption state in which the resin molded product M is not fixed.
[0037] The second force-applying device 24 includes a second mounting section 24a extending in the width direction X and depth direction Y, a second force-applying section 24b, and a fourth fixing section 24c. A portion of the resin molded product M, including the second side 10b, is mounted on the second mounting section 24a. As shown in Figure 7, the second force-applying section 24b has a second rotating shaft 240 extending in the height direction Z and driven by an actuator, and a second pressing section 241 extending from the second rotating shaft 240 by a second length R2 equal to the first length R1. The second rotating shaft 240 is rotatable about the second center C2 as the center of rotation. The second pressing section 241 is movable between an initial position Qc shown by a dashed line and a pressing position Qd shown by a solid line, along the second direction H22 opposite to the first direction H21, by being driven by the second rotating shaft 240. In this embodiment, the second direction H22 is a rotational direction toward the resin molded product M with the second center C2 as the center. At the pressing position Qd, the second pressing part 241 presses the side wall 121 of the second base 12b toward the outside of the resin molded product M (in the direction of arrow X) with a second force F2 equal to the first force F1. Returning to Figure 6, the fourth fixing part 24c is provided on the second mounting part 24a and fixes the resin molded product M to the second force applying device 24. The fourth fixing part 24c can switch between an adsorption state in which the resin molded product M is fixed to the second force applying device 24 and an unadsorption state in which the resin molded product M is not fixed.
[0038] Sensor 104 measures the length of the third side 10c in the width direction X as the dimension of the resin molded product M in the positioning direction by the positioning unit 102 (the direction of the first force F1 by the first force application device 23 and the second force F2 by the second force application device 24, i.e., the width direction X). Specifically, sensor 104 measures the distance to the resin molded product M located at measurement position P2. Sensor 104 has a first sensor 41 positioned on the first force application device 23 side and a second sensor 42 positioned on the second force application device 24 side in the width direction X. In this embodiment, the first sensor 41 measures the first distance L21 to the first side 10a in the width direction X as the dimension of the resin molded product M in the positioning direction of the positioning unit 102 (the direction of the first force F1, i.e., the opposite direction of arrow X). The second sensor 42 measures the second distance L22 to the second side 10b in the width direction X as the dimension of the resin molded product M in the positioning direction of the positioning unit 102 (direction of the second force F2, i.e., direction of arrow X).
[0039] The controller 108 controls the first force application device 23 and the second force application device 24 to simultaneously apply a first force F1 and a second force F2 to the resin molded product M, both in opposite directions and of the same magnitude. As a result, the positioning unit 102 moves the resin molded product M to a measurement position P2 where the first force F1 applied to the first base 12a and the second force F2 applied to the second base 12b are balanced. Therefore, the positioning direction by the positioning unit 102 in this embodiment coincides with the direction of the first force F1 applied to the first base 12a and the second force F2 applied to the second base 12b. At the measurement position P2 in this embodiment, the perpendicular bisector O1 of the first base 12a and the second base 12b of the resin molded product M coincides with the perpendicular bisector O2 of the first center C1 and the second center C2. As a result, the positioning unit 102 can position the resin molded product M with its first side 10a perpendicular to the measurement direction of the first sensor 41 (arrow X direction) and its second side 10b perpendicular to the measurement direction of the second sensor 42 (opposite direction of arrow X). As a result, the sensor 104 can accurately measure the first distance L21 and the second distance L22.
[0040] The identification unit 81 acquires the first distance L21 and the second distance L22 measured by the sensor 104, and estimates the dimensions of the resin molded product M from the first distance L21 and the second distance L22. In this embodiment, the identification unit 81 obtains the length of the third side 10c of the resin molded product M by subtracting the first distance L21 and the second distance L22 from the third distance L23 between the first sensor 41 and the second sensor 42 in the width direction X, and estimates the dimensions of the resin molded product M from the length of the third side 10c. Furthermore, the identification unit 81 selects one candidate dimension D2 from the candidate data group D that approximates the estimated dimensions of the resin molded product M. As a result, the identification unit 81 identifies a candidate mounting position D3 corresponding to the candidate dimension D2 as the mounting position D1.
[0041] <Third Embodiment> Next, a third embodiment of the present disclosure will be described with reference to Figure 8. In the following, a configuration different from the first and second embodiments will be described, and redundant explanations will be omitted. As shown in Figure 8, the resin molded product M of this embodiment has a V-shaped cross-section having a first surface portion 10d including a first side 10a and a second surface portion 10e extending intersecting the first surface portion 10d and including a second side 10b. The manufacturing apparatus 201 of the third embodiment is particularly suitable for resin molded products M having, for example, a V-shaped cross-section, which can be easily positioned in the direction of gravity by tilting.
[0042] The base 12 of the resin molded product M in this embodiment includes a first base 12a positioned on the first surface portion 10d and a second base 12b positioned on the second surface portion 10e.
[0043] The positioning unit 202 includes a jig 25a fixed to the base 20 and a work machine 25b. The jig 25a has a V-shaped cross-section including two opposing inclined surfaces, a first inclined surface 251 and a second inclined surface 252. The work machine 25b in this embodiment is a robot arm including a holding unit 253 for holding the resin molded product M. The work machine 25b holds the resin molded product M and places it on the jig 25a. As a result, the first surface portion 10d of the resin molded product M is positioned facing the first inclined surface 251, and the second surface portion 10e is positioned facing the second inclined surface 252. Furthermore, the work machine 25b applies a force F3 toward the jig 25a to the resin molded product M to position the resin molded product M at a predetermined measurement position P3. The force F3 in this embodiment is a downward force (opposite direction of arrow Z) that presses the resin molded product M against the jig 25a.
[0044] Sensor 204 measures the dimensions of the molded resin product M in the positioning direction of the positioning unit 202 (direction of force F3, i.e., opposite direction of arrow Z), specifically the length from the lower end of the molded resin product M (opposite direction of arrow Z) to the first side 10a and the length from the lower end of the molded resin product M to the second side 10b. Specifically, sensor 204 measures the distance to the molded resin product M located at measurement position P3. Sensor 204 has a first sensor 43 positioned on the first inclined surface 251 side of the jig 25a in the width direction X, and a second sensor 44 positioned on the second inclined surface 252 side of the jig 25a. In this embodiment, the first sensor 43 measures the first distance L31 to the first side 10a in the height direction Z, which is the dimension of the molded resin product M in the positioning direction of the positioning unit 202 (direction of force F3, i.e., opposite direction of arrow Z). The second sensor 44 measures the second distance L32 to the second side 10b in the height direction Z, which is the dimension of the resin molded product M in the positioning direction of the positioning unit 202 (direction of force F3, i.e., opposite direction of arrow Z).
[0045] The controller 208 controls the work machine 25b of the positioning unit 202 to press the resin molded product M against the jig 25a downward (in the opposite direction of arrow Z) and move it. As a result, the first surface portion 10d of the resin molded product M moves downward (in the opposite direction of arrow Z) while in contact with the first inclined surface 251. Similarly, the second surface portion 10e moves downward while in contact with the second inclined surface 252. The work machine 25b moves the resin molded product M to a measurement position P3 where the connection position O3 of the first surface portion 10d and the second surface portion 10e of the resin molded product M coincides with the connection position O4 of the first inclined surface 251 and the second inclined surface 252 of the jig 25a.
[0046] The identification unit 81 acquires a first distance L31 and a second distance L32 measured by the sensor 204, and estimates the dimensions of the resin molded product M from the first distance L31 and the second distance L32. In this embodiment, the identification unit 81 obtains the length of the first surface portion 10d of the resin molded product M in the height direction Z by subtracting the first distance L31 from the third distance L33, which is the distance between the first sensor 43 and the lower end of the jig 25a (opposite direction of arrow Z) in the height direction Z. The identification unit 81 also obtains the length of the second surface portion 10e of the resin molded product M in the height direction Z by subtracting the second distance L32 from the fourth distance L34, which is the distance between the second sensor 44 and the lower end of the jig 25a in the height direction Z. Furthermore, the identification unit 81 estimates the dimensions of the resin molded product M from these lengths and selects one candidate D2 from the candidate data group D that approximates the estimated dimensions of the resin molded product M. As a result, the specific unit 81 identifies a candidate mounting position D3 corresponding to the candidate dimension D2 as the mounting position D1.
[0047] The manufacturing apparatus 1(101,201) of the first to third embodiments has been described above. Whether or not to apply any of these manufacturing apparatuses 1(101,201) to the resin molded product M is to be appropriately selected according to the shape and dimensions of the resin molded product M. The manufacturing apparatus 1(101,201) is selected, for example, according to the shape of the resin molded product M, including its aspect ratio and whether or not there are bent parts, as well as the dimensions of each part.
[0048] As described above, the manufacturing apparatus 1 (101, 201) according to this embodiment can achieve the following effects.
[0049] Manufacturing apparatus 1 (101, 102) is a manufacturing apparatus for attaching parts to a resin molded product, The positioning unit 2 (102, 202) positions the resin molded product M at the measurement position P1 (P2, P3), A sensor 4 (104, 204) for measuring the dimensions of the resin molded product M, A specific unit 81 that identifies the mounting position D1 of the resin molded product M for attaching the component C according to the aforementioned dimensions, A mounting device 6 for attaching the component C to the resin molded product M according to the mounting position D1, Equipped with, The sensor 4 (104, 204) measures the dimensions of the positioning unit 2 (102, 202) in the positioning direction.
[0050] With such a manufacturing apparatus 1 (101.201), the dimensions of the resin molded product M can be estimated with high accuracy, and the part C can be attached to the appropriate mounting position D1 according to the degree of thermal shrinkage.
[0051] Furthermore, the positioning unit 2 is The aforementioned resin molded product M is placed on a fixing jig 21 having a reference surface, A moving jig 22 on which the resin molded product M is placed and which is movable relative to the fixing jig 21, and which presses the resin molded product M against the reference surface S2 to position the resin molded product M at the measurement position P2, It may also be equipped with.
[0052] This allows the positioning unit 2 to easily and accurately position the resin molded product M at the measurement position P1.
[0053] Furthermore, the positioning unit 102 is The resin molded product M is placed on a first force applying device 23 that applies a first force F1 toward the resin molded product M in a first direction H21, The system may also include a second force applying device 24 on which the resin molded product M is placed, which applies a second force F2 to the resin molded product M in a second direction H22 opposite to the first direction H21, and which positions the resin molded product M at the measurement position P2 by balancing the first force F1 and the second force F2.
[0054] As a result, the positioning unit 102 can easily and accurately position the resin molded product M at the measurement position P2.
[0055] Furthermore, the positioning unit 202 is A jig 25a having a V-shaped cross-section with two opposing inclined surfaces 251, 252, The system may also include a work machine that places the resin molded product M on the jig 25a and applies a force F3 toward the jig 25a to the resin molded product M to position the resin molded product M at the measurement position P3.
[0056] As a result, the positioning unit 202 can easily and accurately position the resin molded product M at the measurement position P3.
[0057] Alternatively, the sensors 4 (104, 204) may be fixed at a position away from the positioning unit 2 (102, 202) and measure the distance to the resin molded product M positioned by the positioning unit 2 (102, 202).
[0058] As a result, the manufacturing apparatus 1 (101.201) can estimate the dimensions of the resin molded product M based on the distance measured by the sensor 4.
[0059] Furthermore, the manufacturing apparatus 1 (101, 201) further includes a storage unit 80 that stores a group of candidate data D including a plurality of candidate dimensions D2 and a plurality of candidate mounting positions D3 corresponding to the plurality of candidate dimensions D2. The identifying unit 81 may identify the mounting position D1 by selecting a candidate mounting position D3 corresponding to the dimensions from the candidate data group D.
[0060] This allows the manufacturing apparatus 1 (101.201) to easily identify the mounting position D1.
[0061] Furthermore, the resin molded product M has a first surface (mounting surface 11b) to which the part C is attached, and a second surface (design surface 11a) opposite to the first surface, and the manufacturing apparatus 1 (101, 201) may further include a suction device (first fixing part 21c, second fixing part 22c, third fixing part 23c) for adsorbing the second surface.
[0062] Although embodiments of the present disclosure have been described above, the present disclosure is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention. In particular, the various modifications described herein can be combined as needed. [Explanation of Symbols]
[0063] 1: Manufacturing equipment 2,102,202: Positioning section 4,104,204: Sensor 6: Mounting device 8: Controller 80: Storage section 81: Specific part P1,P2,P3:Measurement position D1: Mounting position X: Width direction Y: Depth direction Z: Height direction
Claims
1. A manufacturing apparatus for attaching parts to a resin molded product, A positioning unit for positioning the resin molded product at the measurement position, A sensor for measuring the dimensions of the aforementioned resin molded product, A designating unit for determining the mounting position of the resin molded product for attaching the component according to the aforementioned dimensions, A mounting device for attaching the component to the resin molded product according to the aforementioned mounting position, Equipped with, The sensor is a manufacturing apparatus that measures the dimensions of the positioning part in the positioning direction.
2. The positioning part is, The aforementioned resin molded product is placed on a fixing jig having a reference surface, A movable jig on which the resin molded product is placed and which is movable relative to the fixing jig, and which presses the resin molded product against the reference surface to position the resin molded product at the measurement position, Equipped with, The manufacturing apparatus according to claim 1.
3. The positioning part is, A first force applying device on which the resin molded product is placed and which applies a first force to the resin molded product in a first direction, The device comprises a second force application device on which the resin molded product is placed, which applies a second force to the resin molded product in a second direction opposite to the first direction, and which positions the resin molded product at the measurement position by the balance between the first force and the second force. The manufacturing apparatus according to claim 1.
4. The positioning part is, A jig with a V-shaped cross-section having two opposing inclined surfaces, The system includes a work machine that places the resin molded product on the jig and applies a force toward the jig to the resin molded product to position it at the measurement position. The manufacturing apparatus according to claim 1.
5. The sensor is fixed at a position away from the positioning unit and measures the distance to the resin molded product positioned by the positioning unit. The manufacturing apparatus according to claim 1.
6. The system further includes a storage unit that stores a group of candidate data, which includes multiple candidate dimensions and multiple candidate mounting positions corresponding to the multiple candidate dimensions. The identifying unit identifies the mounting position by selecting a candidate mounting position corresponding to the dimensions from the candidate data group. The manufacturing apparatus according to claim 1.