Injection molding system

Abstract

The present invention provides an injection molding system capable of preventing an insert component from being separated from a predetermined position when a mold is closed. The injection molding system involved in one embodiment of the present disclosure is an injection molding system for insert molding, and the injection molding system comprises: an opening and closing mechanism for opening and closing a pair of molds; an injection device for injecting resin into a space between the closed pair of molds; and a configuration mechanism having a holding member for holding the insert component, the configuration mechanism being used to configure the insert component between the pair of molds, and the holding member continuing to hold the insert component between the pair of molds after the opening and closing mechanism starts to close the pair of molds.

Description

Technical Field

[0001] The invention relates to an injection molding system. Background Art

[0002] Injection molding is widely performed in which a molten resin is injected into a space formed between a pair of molds and the resin is cooled to solidify, thereby forming a resin molded product. Insert molding is also performed as a method of injection molding in which a resin is injected with an insert component arranged in a mold, thereby forming a molded product in which the insert component and the resin are integrated.

[0003] An injection molding system is constructed to efficiently perform such injection molding by automatically opening and closing the mold, removing the resin molded product, arranging the insert components, etc. It is also proposed to use a robot to remove the resin molded product and arrange the insert components (for example, refer to Patent Document 1).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2013-233707 Summary of the invention

[0007] Problem that the invention aims to solve

[0008] Generally, when insert molding is performed, a holding structure for holding an insert component is provided in one mold, and after the mold on one side holds the insert component, a pair of molds are closed, and then resin is injected. However, depending on the design of the molded product, there is a problem that when the mold is closed after the mold holds the insert component, the insert component may fall off or tilt from the holding structure due to vibration when the mold is closed, thereby detaching from a specified position. In particular, when the center of gravity of the insert component is far from the holding structure provided in the mold, the insert component is easily detached from the specified position. Therefore, an injection molding system that can prevent the insert component from detaching from the specified position when the mold is closed is desired.

[0009] Solutions for solving problems

[0010] An injection molding system involved in one embodiment of the present disclosure is an injection molding system for insert molding, and the injection molding system includes: an opening and closing mechanism, which is used to open and close a pair of molds; an injection device, which is used to inject resin into the space between the closed pair of molds; and a configuration mechanism, which has a holding member for holding an insert component, and the configuration mechanism is used to configure the insert component between the pair of molds, and after the opening and closing mechanism starts to close the pair of molds, the insert component continues to be held between the pair of molds by the holding member.

[0011] Effects of the Invention

[0012] According to the injection molding system according to one aspect of the present disclosure, it is possible to prevent the insert component from being separated from a predetermined position when the mold is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : is a schematic diagram showing the structure of the injection molding system of the first embodiment of the present disclosure.

[0014] Figure 2 It is shown Figure 1 Schematic diagram of a state in which the mold is closed in an injection molding system.

[0015] Figure 3 It is shown Figure 1 A schematic diagram showing a state in which a retaining member is retracted in an injection molding system.

[0016] Figure 4 It is shown Figure 1 A flow chart of a control process of a configuration mechanism in an injection molding system.

[0017] Figure 5 : is a schematic diagram showing the structure of an injection molding system according to a second embodiment of the present disclosure.

[0018] Figure 6 It is shown Figure 5 A flow chart of a control process of a configuration mechanism in an injection molding system.

[0019] Figure 7 : is a schematic diagram showing the structure of an injection molding system according to a third embodiment of the present disclosure.

[0020] Figure 8 It is shown Figure 7 A flow chart of a control process of a configuration mechanism in an injection molding system.

[0021] Fig. 9 : is a schematic diagram showing the structure of an injection molding system according to a fourth embodiment of the present disclosure.

[0022] Description of Reference Numerals

[0023] 1, 1A, 1B, 1C: injection molding system; 10: opening and closing mechanism; 11: movable support part; 12: fixed support part; 13: driving part; 14: opening and closing control part; 20: injection device; 21: screw; 30, 30A, 30B, 30C: configuration mechanism; 31: holding member; 311: component holding part; 312: molded product holding part; 32: robot; 33, 33A: mold detection part; 331: external force sensor; 332: camera device; 34: configuration control part; G: injection molded product; M1, M1B, M1C: movable mold; M2, M2B, M2C: fixed mold; P: insert component; Q: internal space; R: resin. DETAILED DESCRIPTION

[0024] In the following description, when the components involved in the embodiment described later are the same as the components involved in the embodiment described previously, the components are marked with the same reference numerals as the embodiment described previously, and the repeated description is omitted.

[0025] [First embodiment]

[0026] Figure 1 An injection molding system 1 according to a first embodiment of the present disclosure is shown. The injection molding system 1 includes: an opening and closing mechanism 10 for opening and closing a pair of molds (a movable mold M1 and a fixed mold M2); an injection device 20 for injecting a resin R into an internal space Q formed between a pair of closed molds M1 and M2; and a configuration mechanism 30 for configuring an insert component P between the pair of molds M1 and M2. The injection molding system 1 is an injection molding system that injects molten resin R into the internal space Q between a pair of molds M1 and M2 in which the insert component P is configured, and cools the resin to solidify it, thereby obtaining an injection molded product G in which the insert component P and the resin R are integrated.

[0027] A flow path (sprue, runner, etc.) is formed in at least one of the molds M1 and M2 (usually the fixed mold M2) for injecting resin R from the injection device 20 into the internal space Q formed between the molds M1 and M2. In addition, a component holding portion H for fitting and holding the insert component P is provided in the movable mold M1.

[0028] The opening and closing mechanism 10 and the injection device 20 can use devices sold as injection molding devices. That is, the injection molding system 1 can be configured by adding the arrangement mechanism 30 to an existing injection molding device.

[0029] The opening and closing mechanism 10 moves the movable mold M1 to open and close the pair of molds M1 and M2. The opening and closing mechanism 10 can be configured to include: a movable support portion 11 that can move and supports the movable mold M1; a fixed support portion 12 that supports the fixed mold M2; a drive portion 13 that moves the movable support portion 11; and an opening and closing control portion 14 that controls the drive portion 13.

[0030] When the opening and closing control unit 14 closes the molds M1 and M2 through the driving unit 13, the signal indicating the position of the movable mold M1 is output to the configuration mechanism 30. The signal can be a signal that indicates the position of the movable mold M1 as the coordinates of the reference point of the movable mold M1 when the coordinate system of the opening and closing mechanism 10 coincides with the coordinate system of the configuration mechanism 30. The signal can be a signal that indicates the position of the movable mold M1 as the coordinates of the reference point of the movable mold M1 when the coordinate system of the opening and closing mechanism 10 coincides with the coordinate system of the configuration mechanism 30. Figure 1 The signal of the movement amount of the pair of molds M1 and M2 from the open state is shown.

[0031] When the interval between the pair of dies M1 and M2 decreases to a preset value, the opening and closing control unit 14 outputs a signal to the arrangement mechanism 30 requesting it to retreat from between the pair of dies M1 and M2 .

[0032] The injection device 20 melts the pelletized resin R and pressurizes and extrude the molten resin R, thereby injecting the resin R into the internal space Q formed between the molds M1 and M2 . The injection device 20 may be composed of an extruder that pressurizes the resin R by one or more screws 21 .

[0033] The configuration mechanism 30 includes: a holding member 31 for holding the insert component P; a robot 32 having the holding member 31 provided at its front end; a mold detection unit 33 for detecting the position of the movable mold M1; and a configuration control unit 34 for controlling the holding member 31 and the robot 32.

[0034] The arrangement mechanism 30 is used to arrange the insert component P between the pair of molds M1 and M2, and specifically to fit the insert component P into the component holding portion H. In addition, the arrangement mechanism 30 continues to hold the insert component P between the pair of molds M1 and M2 after the opening and closing mechanism 10 starts to close the pair of molds M1 and M2, thereby keeping the insert component P in a state of being fitted into the component holding portion H.

[0035] The arrangement mechanism 30 moves the holding member 31 in accordance with the movement of the movable mold M1 by the opening and closing mechanism 10 to keep the relative position of the holding member 31 to the movable mold M1 fixed. Thus, the movable mold M1 is moved while the insert component P is kept fitted to the component holding portion H.

[0036] Before the opening and closing mechanism 10 completes the closing of the pair of molds M1 and M2, the configuration mechanism 30 causes the holding member 31 to release the insert component P, leaving the insert component P and allowing the holding member 31 to retreat from between the pair of molds M1 and M2. Preferably, the holding member 31 is retreated at the latest possible time, which is a time when the movement of the movable mold M1 by the opening and closing mechanism 10 is not interrupted and the holding member 31 does not interfere with the molds M1 and M2. In this way, the following risks can be minimized: the insert component P falls off from the component holding portion H; the insert component P is sandwiched between the molds M1 and M2 or moves to an inappropriate position in the space between the molds M1 and M2 due to abnormal tilting caused by incomplete fitting.

[0037] The holding member 31 is not particularly limited as long as it can hold the insert component P. For example, it can be a structure that grips the insert component P or a structure that adsorbs the insert component P. In addition, the holding member 31 includes a component holding portion 311 for holding the insert component P and a molded product holding portion 312 for holding the injection molded product G. By providing the holding member 31 with the component holding portion 311 and the molded product holding portion 312, the formed injection molded product G can be efficiently taken out from between the molds M1 and M2 and the insert component P for the next insert molding can be arranged between the molds M1 and M2, so that the cycle time for manufacturing the injection molded product G can be shortened.

[0038] Preferably, the component holding portion 311 and the molded product holding portion 312 of the holding member 31 are separately provided so that the injection molded product G held by the molded product holding portion 312 can be arranged outside the molds M1 and M2 in a state where the insert component P held by the component holding portion 311 is arranged on the component holding portion H. Thus, the timing for retracting the holding member 31 from between the molds M1 and M2 can be set later, so that the insert component P can be prevented from being separated from the predetermined position more reliably.

[0039] Preferably, at least a portion of the holding member 31 has a width in the moving direction of the movable mold M1 that is smaller than a length of the insert component P in the moving direction of the movable mold M1, and the portion is located between the molds M1 and M2 when the insert component P is arranged in the component holding portion H. Thus, after the insert component P is held by the pair of molds M1 and M2 so as not to be separated from a predetermined position, the holding member 31 can be retracted from between the pair of molds M1 and M2.

[0040] There is no particular limitation on the robot 32, and it may be, for example, an orthogonal coordinate robot, a SCARA (Selective Compliance Assembly Robot Arm) robot, a parallel link robot, etc. As shown in the figure, a vertical multi-joint robot with good versatility can be used. The robot 32 is controlled by a configuration control unit 34. Preferably, the robot 32 inserts the holding member 31 between the molds M1 and M2 and withdraws the holding member 31 from the molds M1 and M2 by moving the holding member 31 in a direction substantially perpendicular to the moving direction of the movable mold M1 moved by the opening and closing mechanism 10, so as to avoid interference between the holding member 31 and the molds M1 and M2.

[0041] The mold detection unit 33 can be configured to include an external force sensor 331 that detects an external force acting on the component holding unit 311 of the holding member 31 along the moving direction of the movable mold M1. A strain sensor or the like can be used as the external force sensor 331. The mold detection unit 33 including the external force sensor 331 detects that the movable mold M1 is in a position in contact with the insert component P held by the holding member 31 and in a position where the insert component P and the holding member 31 are further deformed. In the present embodiment, the mold detection unit 33 is used to detect that an abnormal external force is applied to the holding member 31.

[0042] The configuration control unit 34 can be realized by causing a computer device having a CPU, a memory, etc. to execute an appropriate program. Before the opening and closing mechanism 10 closes the pair of molds M1 and M2, the configuration control unit 34 Figure 1 As shown, the insert component P held by the holding member 31 is arranged in the component holding portion H of the movable mold M1. In addition, the arrangement control unit 34 is arranged at least in the initial stage of the closing operation of the pair of molds M1 and M2 by the opening and closing mechanism 10, as shown in FIG. Figure 2 As shown in FIG. 1 , the holding member 31 is moved in accordance with the movement of the movable mold M1 by the opening and closing mechanism 10. Also, the arrangement control unit 34 arranges the holding member 31 between the molds M1 and M2 just before the gap is about to disappear, as shown in FIG. Figure 3 As shown, the insert component P is released from the holding member 31 and the holding member 31 is retracted from between the molds M1 and M2. When the mold detection unit 33 detects an abnormal external force, the configuration control unit 34 stops the operation of the injection molding system 1 appropriately according to the magnitude of the external force.

[0043] In the present embodiment, the configuration control unit 34 controls the operation of the robot 32 so that the movement amount of the movable mold M1 input from the opening and closing control unit 14 of the opening and closing mechanism 10 becomes equal to the movement amount of the holding member 31 .

[0044] Figure 4 The flow of the control of the holding member 31 and the robot 32 by the arrangement control unit 34 in the arrangement mechanism 30 of this embodiment is shown. The control of the arrangement mechanism 30 includes the following steps: arranging the insert component P in the component holding unit H (step S01: refer to Figure 1 ); obtain the movement amount of the movable mold M1 from the opening and closing control unit 14 of the opening and closing mechanism 10 (step S02); move the holding member 31 by the robot 32 so that the movement amount of the holding member 31 is equal to the movement amount of the movable mold M1 (step S03: refer to Figure 2 ); confirm whether the detection value (magnitude of external force) of the mold detection unit 33 is above the abnormal threshold value (step S04); if the detection value of the mold detection unit 33 is above the abnormal threshold value (step S04: "Yes"), issue an alarm and urgently stop the injection molding system 1 (step S05); if the detection value of the mold detection unit 33 is not above the abnormal threshold value (step S04: "No"), confirm whether the detection value of the mold detection unit 33 is above the stop threshold value which is smaller than the abnormal threshold value (step S06); if the detection value of the mold detection unit 33 is above the stop threshold value or above the abnormal threshold value, the injection molding system 1 is stopped. In the case of the above (step S06: "Yes"), the meaning is notified and the injection molding system 1 is stopped under control (step S07); in the case where the detection value of the mold detection unit 33 is smaller than the stop threshold value (step S06: "No"), it is confirmed whether a signal requesting the retraction of the holding member 31 is input by the opening and closing control unit 14 of the opening and closing mechanism 10 (step S08); and in the case where a signal requesting the retraction is input (step S08: "Yes"), the insert component P is released and the holding member 31 is retracted from between the molds M1 and M2 (step S09: refer to Figure 3 ). If a signal requesting retreat is not input (step S08: No), the process returns to step S02.

[0045] As described above, in the injection molding system 1, after the opening and closing mechanism 10 starts to close the pair of molds M1 and M2, the retaining member 31 continues to retain the insert component P at an appropriate position between the molds M1 and M2, thereby preventing the insert component P from falling off from the component retaining portion H or tilting due to incomplete engagement caused by vibration when the opening and closing mechanism 10 closes the molds M1 and M2.

[0046] [Second Embodiment]

[0047] Figure 5The injection molding system 1A according to the second embodiment of the present disclosure is shown. The injection molding system 1A comprises: an opening and closing mechanism 10 for opening and closing a pair of molds M1 and M2; an injection device 20 for injecting a resin R into an internal space Q between a pair of closed molds (a movable mold M1 and a fixed mold M2); and a configuration mechanism 30A for configuring an insert component P between the pair of molds M1 and M2.

[0048] The arrangement mechanism 30A has a holding member 31 for holding the insert component P, and is used to arrange the insert component P between the pair of molds M1 and M2, that is, to fit the insert component P in the component holding portion H. In addition, the arrangement mechanism 30A continues to hold the insert component P between the pair of molds M1 and M2 after the opening and closing mechanism 10 starts to close the pair of molds M1 and M2, thereby keeping the insert component P in a state of being fitted with the component holding portion H.

[0049] The arrangement mechanism 30A includes a holding member 31 , a robot 32 having the holding member 31 at its front end, a mold detection unit 33A for detecting the position of the movable mold M1 , and an arrangement control unit 34A for controlling the holding member 31 and the robot 32 .

[0050] The mold detection unit 33A in this embodiment has a camera 332. In this embodiment, the mold detection unit 33A uses the camera 332 disposed at the front end of the robot 32 or the holding member 31 to capture a mark D attached to the movable mold M1 or the opening and closing mechanism 10 that moves integrally with the movable mold M1. Then, the mold detection unit 33A uses image processing technology to analyze the image captured by the camera 332, thereby calculating the position of the mark D based on the camera 332, that is, the relative value of the movable mold M1 relative to the holding member 31.

[0051] Such a mold detection unit 33A can, for example, calculate the distance between the holding member 31 and the movable mold M1 based on the size of the mark D in the image captured by the camera device 332. The configuration mechanism 30A moves the holding member 31 by the robot 32 so that the size of the mark D in the image captured by the camera device 332 is fixed, thereby being able to move the holding member 31 in accordance with the movement of the movable mold M1 by the opening and closing mechanism 10. In addition, when the imaging direction of the camera device 332 is not parallel to the moving direction of the movable mold M1, the mold detection unit 33A calculates the relative value of the movable mold M1 with respect to the holding member 31 based on the coordinate position of the mark D in the captured image, or based on the size and coordinate position of the mark D in the image.

[0052] The arrangement control unit 34A arranges the insert component P held by the holding member 31 in the component holding portion H of the movable mold M1 before the opening and closing mechanism 10 closes the pair of molds M1 and M2. Then, the arrangement control unit 34A moves the holding member 31 in accordance with the movement of the movable mold M1 by the opening and closing mechanism 10 based on the detection value of the mold detection unit 33A at least in the initial stage of the closing operation of the pair of molds M1 and M2 by the opening and closing mechanism 10. Furthermore, the arrangement control unit 34A releases the insert component P from the holding member 31 and retracts the holding member 31 from between the molds M1 and M2 just before the gap for arranging the holding member 31 between the molds M1 and M2 disappears.

[0053] In the present embodiment, the arrangement control unit 34A controls the operation of the robot 32 so that the relative position of the movable mold M1 with respect to the holding member 31 detected by the mold detection unit 33A does not change.

[0054] Figure 6 The flow of control of the holding member 31 and the robot 32 by the arrangement control unit 34A in the arrangement mechanism 30A of the present embodiment is shown. The control of the arrangement mechanism 30A includes the following steps: arranging the insert component P in the component holding portion H (step S11); detecting the position of the mark D by the mold detection unit 33A (step S12); moving the holding member 31 by the robot 32 to suppress the change in the relative position of the holding member 31 with respect to the movable mold M1 (step S13); confirming whether a signal requesting the retraction of the holding member 31 is input by the opening and closing control unit 14 of the opening and closing mechanism 10 (step S14); and releasing the insert component P and retracting the holding member 31 from between the molds M1 and M2 (step S15).

[0055] After the configuration mechanism 30A is configured in the component holding portion H in step S11, in step S12, the mark D is photographed by the camera device 332, and the size and coordinates of the mark D in the camera image are determined by image processing. In step S13, the holding member 31 is moved by the robot 32 to suppress changes in the size and coordinates of the mark D in the camera image of the camera device 332. Thus, when the opening and closing mechanism 10 moves the movable mold M1, the holding member 31 is moved in matching with the movable mold M1. Steps S12 and S13 are repeated until a retreat request for the holding member 31 is confirmed in step S14 ("Yes"). When a retreat request for the holding member 31 is confirmed in step S14, the insert component P is released and the holding member 31 is retreated in step S15.

[0056] [Third Embodiment]

[0057] Figure 7The third embodiment of the present disclosure shows an injection molding system 1B. The injection molding system 1B includes: an opening and closing mechanism 10 for opening and closing a pair of molds M1B and M2B; an injection device 20 for injecting a resin R into a space Q between the closed pair of molds M1B and M2B; and a configuration mechanism 30B for configuring an insert component P between the pair of molds M1B and M2B.

[0058] The arrangement mechanism 30B includes: a holding member 31 for holding the insert component P; a robot 32 having the holding member 31 disposed at its front end; a mold detection unit 33 for detecting the position of the movable mold M1; and an arrangement control unit 34B for controlling the holding member 31 and the robot 32. In the injection molding system 1B of the present embodiment, the molds M1B and M2B form an opening T for arranging the holding member 31 of the arrangement mechanism 30B when they are closed.

[0059] Before the opening and closing mechanism 10 closes the pair of molds M1B and M2B, the arrangement control unit 34B arranges the insert component P held by the holding member 31 in the component holding portion H of the movable mold M1B, and moves the holding member 31 in accordance with the movement of the movable mold M1B by the opening and closing mechanism 10. The arrangement control unit 34B of this embodiment retracts the holding member 31 from between the pair of molds M1B and M2B through the opening T after the opening and closing mechanism 10 closes the pair of molds M1B and M2B.

[0060] In this embodiment, the configuration control unit 34B controls the operation of the robot 32 so that the contact pressure of the movable mold M1B detected by the mold detection unit 33 approaches a preset tracking reference value, that is, the movable mold M1B is kept in contact with the insert component P at an appropriate pressure.

[0061] Figure 8The flow of controlling the holding member 31 and the robot 32 by the configuration control unit 34B in the configuration mechanism 30B of the present embodiment is shown. The control of the configuration mechanism 30B includes the following steps: configuring the insert component P in the component holding unit H (step S21); confirming the detection value of the mold detection unit 33 (step S22); moving the holding member 31 so that the detection value of the mold detection unit 33 approaches the tracking reference value (step S23); confirming whether a signal requesting the holding member 31 to retreat (in this embodiment, a signal notifying that the molds M1B and M2B are closed) is input by the opening and closing control unit 14 of the opening and closing mechanism 10 (step S24); and releasing the insert component P and retreating the holding member 31 from between the molds M1B and M2B (step S25). Steps S21, S22, and S23 are repeated until it is confirmed in step S24 that the molds M1B and M2B are closed ("Yes"). When it is confirmed in step S24 that the closing of the molds M1B and M2B is completed, the insert component P is released and the holding member 31 is retracted in step S25 .

[0062] In the injection molding system 1B, the insert component P is held by the holding member 31 until the molds M1B and M2B are completely closed, so that the insert component P can be more reliably prevented from being separated from the predetermined position. In the injection molding system 1B, the resin R may also enter the opening T, and can be cut off from the injection molded product G in the same way as the resin in the sprue.

[0063] [Fourth Embodiment]

[0064] Fig. 9 The fourth embodiment of the present disclosure shows an injection molding system 1C. The injection molding system 1C includes an opening and closing mechanism 10 for opening and closing a pair of molds M1C and M2C, an injection device 20 for injecting a resin R into an internal space Q between the closed pair of molds M1C and M2C, and a configuration mechanism 30C for configuring an insert component P between the pair of molds M1C and M2C. In the injection molding system 1C of the present embodiment, a component holding portion HC for engaging and holding the insert component P is provided in the fixed mold M2C.

[0065] The arrangement mechanism 30C includes a holding member 31 for holding the insert component P, a robot 32 at the front end of which the holding member 31 is provided, and an arrangement control unit 34C for controlling the holding member 31 and the robot 32 .

[0066] First, the configuration control unit 34C operates the robot 32 to position the holding member 31 to fit the pre-clamped insert component P into the component holding portion HC. Then, when a signal requesting the holding member 31 to retreat is input from the opening and closing mechanism 10, the robot 32 operates to release the insert component P from the holding member 31, leaving the insert component P and retreating the holding member 31 from between the pair of molds M1C and M2C.

[0067] The above describes the implementation of the injection molding system involved in the present disclosure, but the injection molding system involved in the present disclosure is not limited to the aforementioned implementation. In addition, the effects described in the aforementioned implementation are only the best effects produced by the injection molding system involved in the present disclosure, and the effects of the injection molding system involved in the present disclosure are not limited to the effects described in the aforementioned implementation.

[0068] In the injection molding system involved in the present disclosure, it is also possible to prepare an action program for the configuration mechanism to move the retaining member by assuming that the opening and closing mechanism moves the movable mold at a moving speed when the opening and closing mechanism moves stably, so that the configuration mechanism starts to move the retaining member at the same time as the opening and closing mechanism starts to close the mold.

[0069] In the injection molding system involved in the present disclosure, the configuration mechanism may determine the moment to withdraw the holding member from between the molds by detecting the position of the mold that is close to the holding member due to the closing of the mold, not based on the signal from the opening and closing mechanism. Alternatively, the holding member may be withdrawn from between the molds when a fixed time has passed since the opening and closing mechanism started the closing action on the mold.

[0070] In the injection molding system involved in the present disclosure, it is also possible that, in a case where an opening for configuring a retaining member is provided on a pair of molds, after the resin is injected into the internal space between the pair of molds, the retaining member is retracted from between the pair of molds through the opening. In this case, it is possible to prevent the resin from flowing into the opening of the mold. Therefore, it is possible that a retained portion is protrudingly provided on the insert component, the retained portion is retained by the retaining member, and is cut off from the injection molded product. In addition, in the injection molding system involved in the present disclosure, it is also possible that, after the injection device finishes injecting the resin and before the resin is solidified, the retaining member is retracted from between the pair of molds through the opening.

[0071] In the injection molding system of the present disclosure, the mold detection unit may be configured to capture a mark provided on a holding member or the like of the configuration mechanism by a camera provided on the opening and closing mechanism. Alternatively, the relative position of the mold with respect to the holding member may be detected by capturing a feature portion of the shape of the opening and closing mechanism or the configuration mechanism by a camera without providing a mark.

Claims

1. An injection molding system, which is an injection molding system for insert molding, comprising: An opening and closing mechanism, which is used to open and close a pair of molds; an injection device for injecting resin into the closed space between the pair of molds; and The arrangement mechanism includes a holding member for holding the insert component, the arrangement mechanism is used to arrange the insert component between the pair of molds and to enable the holding member to be retracted from between the pair of molds, and after the opening and closing mechanism starts to close the pair of molds, the insert component is still held between the pair of molds by the holding member. The arrangement mechanism moves the holding member in accordance with the movement of the movable mold of the pair of molds moved by the opening and closing mechanism, so that the relative position of the holding member with respect to the movable mold is kept fixed.

2. The injection molding system according to claim 1, characterized in that The arrangement mechanism retracts the holding member from between the pair of dies after releasing the insert component before the opening and closing mechanism completes closing of the pair of dies.

3. The injection molding system according to claim 1, characterized in that The pair of molds, when closed, form an opening for disposing the holding member. The arrangement mechanism retracts the holding member from between the pair of dies through the opening after the space between the pair of dies is closed.

4. The injection molding system according to claim 1, characterized in that The arrangement mechanism includes a mold detection unit for detecting a position of the movable mold.

5. The injection molding system according to claim 4, characterized in that The mold detection unit includes an imaging device.

6. The injection molding system according to claim 4, characterized in that The mold detection portion includes an external force sensor for detecting an external force acting on the holding member.

7. The injection molding system according to claim 6, characterized in that The arrangement mechanism moves the holding member so that the detection value of the external force sensor approaches a preset tracking reference value.

8. The injection molding system according to claim 1, characterized in that The arrangement mechanism is composed of a vertical articulated robot having the holding member provided at a front end.

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