JP4199089B2 - Insert part mold set monitoring device - Google Patents

Description

  The present invention relates to a mold set monitoring device for an insert part for monitoring that the insert part is set in a molding die.

  A molded product incorporating an insert part during resin molding is known. Such a molded product is manufactured by filling the molding die with resin in a state where the insert component is brought into close contact with a predetermined position of the molding die in advance. There is known an insert part that has a small hole in a shape and mechanically integrates with a resin molded body around the resin by entering the resin into the small hole during molding.

  When manufacturing a large number of molded products, a transport device for transporting the insert parts to the molding die is attached to the molding machine. This type of transport device is a suction device that holds the insert components by vacuum suction. Tools are often adopted.

  When manufacturing a large number of molded products, the operation of the suction tool and the operation of the molding machine will be centrally managed by the control panel in order to control the molding machine fully automatically. In order to set the mold at a predetermined position of the molding die, a system for monitoring that the suction tool has set the insert part on the molding die is required instead of human eyes.

  An object of the present invention is to provide an insert part mold set monitoring device capable of monitoring that the suction tool of the transport device has set the insert part on the cavity surface of the molding die.

  A further object of the present invention is to provide an insert part mold set capable of monitoring the insert part without having to prepare a dedicated monitoring system for monitoring that the insert part is set on the cavity surface of the mold. It is to provide a monitoring device.

According to the present invention, such a technical problem is
An adsorbing tool for an insert that has a small hole and adsorbs and holds an insert part that is mechanically fixed to a resin molded body by intrusion of resin into the small hole during molding, from the small hole of the insert part An adsorbing tool for an insert having an adsorbing seating surface for supporting the insert part at an offset position;
A degree-of-vacuum detection means for detecting the degree of vacuum generated in the adsorbing tool for inserts when adsorbing the insert parts;
A set monitoring means for receiving a signal from the vacuum degree detection means and monitoring that the insert adsorber accesses the molding die and sets the insert part in the molding die;
The set monitoring means has a relatively low degree of vacuum that is generated in the insert adsorber when the insert component is adsorbed and the outside air enters from a small hole of the insert component. As the insert part is set in the molding die, the small hole of the insert part rises by being blocked by the cavity surface of the molding die, so that the insert part is set in the molding die. This is achieved by providing an insert part mold set monitoring device characterized by monitoring the operation.

  That is, the present invention utilizes the fact that when the insert part is set on the cavity surface of the molding die, the small hole provided in the insert part is blocked by the molding die, It is arranged at a position offset from the small hole of the insert part. Thereby, when the adsorbing tool for insert adsorbs the insert part, the degree of vacuum generated in the adsorbing tool for insert becomes a relatively low value due to the outside air entering through the small hole of the insert part. On the other hand, when the insert adsorber sets the insert part on the cavity surface of the molding die, the small hole of the insert part is blocked by the molding die, so that the vacuum degree of the insert adsorber becomes a relatively high value. Become. Therefore, since the vacuum level of the suction tool for the insert has changed from a relatively low value to a high value, it can be known that the insert part has been set in the molding die. The monitoring system can be used as it is, and it can be monitored that the insert adsorber has set the insert part in the molding die.

  In a preferred embodiment of the present invention, a circular opening into which the gate part of the molding die can enter is formed in the central part of the insert part, and the diameter of the central circular opening of the insert part is substantially equal to the outer diameter of the gate part. It is better to set the dimension equal to. As a result, when the insert adsorber accesses the molding die and sets the insert part on the cavity surface of the molding die, the gate part automatically engages with the central circular opening of the insert part to automatically mold the molding part. Positioning of the insert part relative to the mold can be performed.

  Moreover, in preferable embodiment of this invention, the workpiece conveyance means which conveys insert components to a shaping | molding die is comprised by the two-stage conveyance means of the adsorption tool for relays, and the adsorption tool for inserts. The adsorbing tool for insert has a concave portion having a diameter corresponding to the diameter of the central circular opening of the insert part, while the adsorbing tool for relay has a convex portion that is received by the concave portion of the adsorbing tool for insert. When the relay suction tool that has sucked the part faces the insert part to deliver the insert part to the insert suction tool, the convex part of the relay suction tool is received in the concave part of the insert suction tool. The relative positioning of the adsorbing tool for insert and the adsorbing tool for relay becomes possible.

  In a preferred embodiment of the present invention, the suction seating surface of the relay suction tool is provided at a position corresponding to the small hole of the insert part, and when the relay suction tool sucks the insert part, Since a relatively high degree of vacuum is generated, which is substantially the same as when the above-mentioned insert part is set in the molding die, the relay adsorbing tool adsorbs the insert part by this relatively high degree of vacuum. Can be monitored.

  The present invention is typically applicable to insert molding of a circular metal plate on a reel on which a magnetic recording tape is wound.

  FIG. 1 shows a case of a one-reel type tape cartridge and a reel mounted therein. The tape cartridge 1 has upper and lower cases 2 and 3 that are screwed, and a reel 4 that is rotatably mounted inside the upper and lower cases 2 and 3. 4 is a resin molded product.

  The reel 4 includes a reel body 7 having a hollow boss portion 6 standing at the center of the disk 5 and an upper flange 8 bonded to the upper end opening edge of the hollow boss portion 6. As is known, a magnetic recording tape (not shown) is wound around the outer peripheral surface of the boss portion 6. That is, one flange of the reel 4 is constituted by the upper flange 8 described above, and the lower flange is constituted by an outer peripheral portion of the disk 5 of the reel body 7.

  The reel body 7 is a resin integrated molded product including a disk 5 and a hollow boss portion 6. 1 is a perspective view of the reel body 7 as viewed from below. As can be understood from the figure enclosed in parentheses in FIG. 1, the center portion of the lower surface of the disk 5 has a tooth row 9 arranged in a ring shape and a circular metal inserted in a portion surrounded by the tooth row 9. The ring-shaped tooth row 9 and the circular metal plate 10 are exposed to the outside through a circular opening 3a in the central portion of the lower case 3.

  When the tape cartridge 1 is attached to a drive device (not shown), the rotational drive member of this drive device enters the inside of the cartridge 1 through the circular center opening 3a of the lower case 3 and magnetically attracts the metal plate 10. In addition, the drive teeth of the rotation drive member mesh with and engage with the above-described link-like tooth row 9, thereby mechanically connecting the tape drive member and the reel 4.

  As shown in FIG. 2, the metal plate 10 as the insert part has a central circular opening 11 and a plurality (specifically, three) small holes 12 arranged at equal intervals on the same circumference. And. As shown in FIG. 3, the small hole 12 has an undercut shape having an enlarged diameter portion 12a on the lower surface side, and when the reel body 5 is resin-molded, a resin is contained in the undercut small hole 12. As a part of the metal plate 10 enters, the metal plate 10 is mechanically fixed to the reel body 5.

  FIG. 4 shows an outline of an insert part conveying system for setting the metal plate 10 in the injection molding machine 25. The metal plate 10 is transported from the stock yard 20 to a predetermined position of the standby station 22 by transport means 21 such as a vibration conveyor.

  The metal plate 10 placed on the standby station 22 is conveyed from the standby station 22 to the injection molding machine 25 in two stages. Specifically, the metal plate 10 is transported to a predetermined position of the fixed mold 26 of the injection molding machine 25 using the relay transport means 23 and the insert transport means 24.

  As is well known, the injection molding machine 25 includes a fixed-side mold 26 and a moving-side mold 27. After the metal plate 10 is set on the fixed-side mold 26, the moving-side mold 27 is moved forward. The mold body is closed, and then the reel body 5 including the metal plate 10 is integrally formed by filling a molten resin into a cavity formed by the fixed mold 26 and the movable mold 27. The reel body 5 which is a molded product is taken out after the moving mold 27 is retracted and the mold is opened.

  FIG. 5 shows a flow of a series of operations accompanying the forming of the reel body 5. Referring to the figure, the metal plate 10 located at the delivery station 22 is transported in the first stage by the relay suction means 23, and then the metal plate 10 is transferred from the relay suction means 23 to the insert transport means 24. To be handed over. The metal plate 10 is transported to the injection molding machine 25 by the insert transport means 24 and is set on the fixed mold 26 of the injection molding machine 25 using the insert transport means 24.

  The relay conveying means 23 includes a relay suction tool 230 shown in FIG. The relay adsorbing tool 230 has a front shaping member 232 bonded to the front surface of a main body 231 made of a resin molded product. The front shaping member 232 includes a large-diameter ring-shaped projection 233, a small-diameter ring-shaped projection 234, and a central cone. It consists of a resin molded product provided with a trapezoidal protrusion 235. These elements, that is, the large-diameter ring-shaped protrusion 233, the small-diameter ring-shaped protrusion 234, and the central frustoconical protrusion 235 are arranged coaxially, whereby a small-diameter circle is formed between the central frustoconical protrusion 235 and the small-diameter ring-shaped protrusion 234. A circumferential groove 236 is formed, and a large-diameter circumferential groove 237 is formed between the small-diameter ring-shaped protrusion 234 and the large-diameter ring-shaped protrusion 233.

  Referring also to FIG. 8, the small-diameter ring-shaped protrusion 234 is provided at a position corresponding to the three small holes 12 arranged on the same circumference of the metal plate 10, and the central truncated cone-shaped protrusion 235 is The metal plate 10 has an outer diameter contour corresponding to the diameter of the central circular opening 11.

  A plurality of vacuum ports 238 are opened at equal intervals in the circumferential direction on the bottom surfaces of the small-diameter groove 236 and the large-diameter groove 237, and the vacuum ports 238 pass through an internal passage 239 formed in the main body 231 to supply a vacuum source ( For example, a first switching valve 29 is interposed in the conduit 28 between the internal passage 239 and the vacuum source. By operating the first switching valve 29, the internal passage 239, that is, the small-diameter circumferential groove 236 and the large-diameter circumferential groove 237 communicate with a vacuum source to evacuate the metal plate 10. It is possible to take a vacuum break state and an air release state for forcibly releasing the metal plate 10 by communicating with a pressurized air source.

  FIG. 7 shows the insert suction tool 240 included in the insert transport means 24. The insert adsorber 240 has a columnar main body 241 made of a resin molded product, and a small-diameter cylindrical protrusion 242 and a ring-shaped protrusion 243 having a diameter corresponding to the outer diameter contour of the columnar main body 241 on the front surface thereof. As a result, a circumferential groove 244 is formed between the small diameter cylindrical protrusion 242 and the ring-shaped protrusion 243, and a central recess 245 surrounded by the small diameter cylindrical protrusion 242 is formed. The inner diameter of the central recess 245 has substantially the same diameter as the diameter of the central circular opening 11 of the metal plate 10 (that is, the diameter of the distal end portion of the central truncated cone protrusion 235 in the relay suction tool 230 described above).

  A vacuum port 246 is opened on the bottom surface of the circumferential groove 244, and is communicated with a vacuum source common to the above-described relay suction tool 230 through the vacuum port 246 and an internal passage 247 formed in the main body 241. A second switching valve 31 is interposed in the conduit 30 between the passage 247 and the vacuum source. By operating the second switching valve 30, the internal passage 247, that is, the circumferential groove 244 communicates with a vacuum source to evacuate the metal plate 10, and communicates with a pressurized air source (not shown). A vacuum breaking state for forcibly releasing the metal plate 10 and an atmospheric release state can be taken.

  Returning to FIG. 4, the process of transporting the metal plate 10 to the injection molding machine 25 and setting it on the cavity surface of the stationary mold 26 will be described. The metal plate 10 transported from the stock yard 20 to the standby station 22 is , And placed in a horizontal state at a predetermined position of the standby station 22.

  The metal plate 10 positioned in a horizontal state on the standby station 22 is adsorbed by the relay adsorbing tool 230 in a state of being directed downward. At this time, the tapered central truncated cone protrusion 235 of the relay suction tool 230 enters the central circular opening 11 of the metal plate 10, so that the metal plate 10 is positioned with respect to the relay suction tool 230. The metal plate 10 is held in a state of being seated on the small-diameter and large-diameter ring-shaped protrusions 233 and 234. That is, the front surfaces of the small-diameter and large-diameter ring-shaped protrusions 233 and 234 constitute an adsorption seating surface for the metal plate 10.

  The relay suction tool 230 moves upward from the standby station 10, and then moves in the horizontal direction with the suction surface turned sideways by changing its direction to the delivery position indicated by reference numeral 33 in FIG. 4.

  At the delivery position 33, the relay suction tool 230 that holds the metal plate 10 faces the side-by-side insert suction tool 240, and the metal plate 10 is delivered from the relay suction tool 230 to the insert suction tool 240. .

  FIG. 8 shows a state where the relay suction tool 230 and the insert suction tool 240 face each other at the delivery position 33 for delivery of the metal plate 10. As can be understood from FIG. 8, when the distal end portion of the tapered central truncated cone protrusion 235 of the relay suction tool 230 enters the central recess 245 of the insert suction tool 240, The metal plate 10 is handed over in a state where the relative positioning with the insert adsorbing tool 240 is performed.

  When the metal plate 10 is delivered from the relay suction tool 230 to the insert suction tool 240, the first switching valve 29 (FIG. 6) related to the relay suction tool 230 is operated, and the relay suction tool 230 is operated. Is communicated with the pressurized air source, whereby the vacuum break is executed, and the metal plate 10 is released from the relay suction tool 230.

  On the other hand, the vacuum port 246 of the suction tool 240 for insert is communicated with the vacuum source by the path switching operation to the second switching valve 31, whereby the suction tool 240 for insert sucks the metal plate 10, and the metal plate 10 The suction tool 240 is held in a state of being seated on the small-diameter cylindrical protrusion 242 and the outer peripheral portion. That is, the front surface of the small-diameter cylindrical protrusion 24 and the outer peripheral portion of the front surface of the insert suction tool 240 constitute a suction seat surface for the metal plate 10, and this suction seat surface is offset from the small hole 12 of the metal plate 10. It is arranged at the position.

  Returning to FIG. 4, the suction tool 240 for inserts which received the metal plate 10 accesses the injection molding machine 25 by linearly moving in the horizontal direction. FIG. 9 shows a state in which the insert suction tool 240 holding the metal plate 10 faces the stationary mold 26 and sets the metal plate 10 on the cavity surface.

  The stationary mold 26 has a gate portion 35 protruding toward the cavity, and a plurality of permanent magnets 36 are detachably installed around the gate portion 35, for example, at equal intervals in the circumferential direction.

  When the suction tool 240 for insert moved from the delivery position 33 described above moves to the position 37 (FIG. 4) facing the fixed mold 26, the central circular opening of the metal plate 10 held by the suction tool 240 for insert. 11 is arranged at a position substantially corresponding to the gate portion 35 of the fixed mold 26. Next, the adsorbing tool for insert 240 advances in a direction approaching the fixed side mold 26 and performs an operation of setting the metal plate 10 to the fixed side mold 26.

  FIG. 9 shows the adsorber 240 for insert in the set position. When the insert adsorbing tool 240 moves forward to the set position, the gate portion 35 enters the center circular opening 11 of the metal plate 10. The gate portion 35 has substantially the same height as the metal plate 10 as can be best understood from FIG. The gate portion 35 has a base end portion 35 a having a cylindrical outer contour and a tip portion 35 b having a tapered truncated cone-shaped outer contour, and a resin injection port on the axis of the gate portion 35. 35c is provided.

  The outer diameter of the base end portion 35 a of the gate portion 35 is substantially equal to the diameter of the central circular opening 11 of the metal plate 10, whereby the insert suction tool 240 moves closer to the stationary mold 26. The gate portion 35 penetrates into the central circular opening 11 of the metal plate 10 held by the insert suction tool 240 while avoiding the problem of interference with the gate portion 35 by the central recess 245 of the insert suction tool 240. Then, the metal plate 10 is engaged with the proximal end portion 35 a of the gate portion 35 while being guided by the tapered side surface of the distal end portion 35 b of the gate portion 35. As a result, the metal plate 10 is set on the fixed-side mold 26 while being positioned at a predetermined position of the fixed-side mold 26.

  Then, when the insert suction tool 240 advances to the set position, the metal plate 10 is brought into close contact with the cavity surface of the fixed mold 26 by the insert suction tool 240, and the small holes 12 of the metal plate 10 are fixed to the fixed metal mold. It will be in the state closed by the type | mold 26 (refer the small hole 12 shown with the virtual line of FIG.9 and FIG.10).

  When the setting of the metal plate 10 to the stationary mold 26 is completed by the insert suction tool 240, the passage is switched by the second switching valve 31 (FIG. 7) related to the insert suction tool 240, and the insert The suction tool 240 is communicated with a pressurized air source (not shown), whereby a vacuum break is performed, and the metal plate 10 is released from the insert suction tool 240. The metal plate 10 released from the insert attracting tool 240 is held by the fixed mold 26 while being magnetically attracted by the permanent magnet 36.

  The above-described insert component transport system incorporates a suction monitoring system for monitoring the holding and holding of the metal plate 10 by the relay suction tool 230 and the insert suction tool 240 and the setting of the metal plate 10 by the insert suction tool 240. The insert part conveying system and the injection molding machine 25 are centrally controlled by the control panel 40 (see FIG. 5).

  When the insert suction tool 240 receives the metal plate 10 from the relay suction tool 230, the circumferential groove 244 of the insert suction tool 240 is closed by the metal plate 10, but the suction seating surface of the metal plate 10 is Since the circumferential groove 244 is slightly offset from the small hole 12, the circumferential groove 244 is slightly in communication with the outside air through the small hole 12 of the metal plate 10, and thereby the inside of the circumferential groove 244 has a moderate degree of vacuum. Become.

  When the insert adsorber 240 accesses the fixed mold 26 and sets the metal plate 10 in the fixed mold 26, the small holes 12 of the metal plate 10 are formed on the fixed mold 26, as can be understood from FIGS. It will be in the state obstruct | occluded by the cavity surface of the type | mold 26, and, thereby, the inside of the circumferential groove 244 of the suction tool 240 for inserts will be a high degree of vacuum.

  FIG. 11 shows a change in the degree of vacuum in the circumferential groove 244 in the insert suction tool 240 when the metal plate 10 is set in the stationary mold 26.

  As described above, the relatively low degree of vacuum generated when the insert adsorbing tool 240 adsorbs the metal plate 10 due to the intrusion of air through the small holes 12 for mechanically fixing the metal plate 10 to the resin molded product. In addition to monitoring that the insert suction tool 240 sucks the metal plate 10, the insert suction tool 240 accesses the fixed mold 26 and sets the metal plate 10 against the cavity surface of the fixed mold 26. By detecting the relatively high degree of vacuum generated when the small hole 12 of the metal plate 10 is closed by the fixing mold 26 when the metal plate 10 is completed, the metal plate 10 is set in the fixed mold 26. Can be monitored.

  As shown in FIG. 7, the degree of vacuum in the circumferential groove 244 of the insert adsorbing tool 240 is detected by, for example, a first pressure sensor 41 provided in the conduit 30, and the pressure detected by the first pressure sensor 41. The signal is input to the control panel 40 (FIG. 5), and compared with the first and second threshold values shown in FIG. 11, monitoring of the suction of the metal plate 10 by the insert suction tool 240 and the fixed-side mold 26. Monitoring of the set of the metal plate 10 is performed.

  Here, the first threshold value is set to a degree of vacuum (for example, −9.0 MPa) slightly lower than the degree of vacuum generated when the adsorbing tool for insert 240 sucks the metal plate 10. Further, the second threshold value is set to a degree of vacuum (for example, −20.0 MPa) slightly lower than the degree of vacuum generated when the insert adsorber 240 sets the metal plate 10 to the fixing mold 26.

  As can be seen from the above description, it is not necessary to provide a dedicated system for monitoring that the metal plate 10 is set on the fixed mold 26 in the fixed mold 26, and the adsorber 240 for insert is used in the metal plate. 10 can be used as it is, and it can be monitored that the insert adsorber 240 has set the metal plate 10 in the stationary mold 26.

  Similarly, since there is a large difference in the degree of vacuum between the relay suction tool 230 and the insert suction tool 240, the suction of the metal plate 10 by the relay suction tool 230 can be accurately monitored.

  That is, when the relay suction tool 230 sucks the metal plate 10, the small and large circumferential grooves 236 and 237 (FIG. 6) in which the vacuum port 238 of the relay suction tool 230 opens are completely closed by the metal plate 10. (The small hole 12 of the metal plate 10 is closed by the small-diameter ring-shaped protrusion 234), so that when the metal plate 10 is set on the stationary mold 26, The small diameter and large diameter circumferential grooves 236, 237 of the relay suction tool 230 have a high degree of vacuum.

  As shown in FIG. 6, the degree of vacuum of the small-diameter and large-diameter circumferential grooves 236 and 237 of the relay suction tool 230 is detected by, for example, the second pressure sensor 42 provided in the conduit 28, and the relay suction tool 230. By preparing as a threshold a degree of vacuum that is slightly lower than the degree of vacuum when the metal plate 10 is adsorbed, the adsorption of the metal plate 10 by the relay adsorbing tool 230 can be monitored.

  The control panel 40 receives signals from the first and second pressure sensors 41 and 42 and compares them with the corresponding threshold values, thereby not only confirming the suction of the relay suction tool 230 and the insert suction tool 240. While confirming that the metal plate 10 is set in the stationary mold 26, the molding machine 25 and the work transfer system attached thereto can be sequentially controlled. For example, if the pressure signal from the first pressure sensor 41 is lower than the second threshold at the timing when the metal plate 10 should be set on the fixed mold 26, the metal plate 10 is set on the fixed mold 26. Therefore, the abnormality occurrence control such as stopping the operation of the injection molding machine 25 is executed.

It is a disassembled perspective view of the tape cartridge which can apply this invention in the case of manufacture. It is a perspective view of the metal plate which is insert parts. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2 in order to clarify the cross-sectional shape of the small hole formed in the metal plate. It is a figure for demonstrating the outline | summary which conveys a metal plate to an injection molding machine in two steps. 1 is an overall system diagram of an injection molding machine and a two-stage conveyance system attached thereto. It is a figure which shows the state which the suction tool for relay and the suction tool for inserts faced in order to deliver a metal plate. It is a perspective view of the adsorption tool for relay. It is a perspective view of the suction tool for inserts. It is a figure which shows the state which the suction tool for inserts faced the shaping die in order to set a metal plate to a shaping die. It is a figure for demonstrating the shape of the gate part provided in the shaping die. It is a figure for demonstrating the threshold value for discriminating the appropriateness while showing the change of the vacuum degree accompanying adsorption | suction of the metal plate by the adsorption | suction tool for inserts, and the subsequent setting to the fixed side metal mold | die.

Explanation of symbols

4 Reel 7 Reel body 10 Metal plate 11 Central circular opening of metal plate 12 Small hole in metal plate 25 Injection molding machine 26 Fixed side mold 33 Delivery position 230 Adsorption tool for relay 235 Central frustoconical protrusion (convex part)
240 Adsorption tool for insert 245 Central recess

Claims (5)

An adsorbing tool for an insert that has a small hole and adsorbs and holds an insert part that is mechanically fixed to a resin molded body by intrusion of resin into the small hole during molding, from the small hole of the insert part An adsorbing tool for an insert having an adsorbing seating surface for supporting the insert part at an offset position;
A degree-of-vacuum detection means for detecting the degree of vacuum generated in the adsorbing tool for inserts when adsorbing the insert parts;
A set monitoring means for receiving a signal from the vacuum degree detection means and monitoring that the insert adsorber accesses the molding die and sets the insert part in the molding die;
The set monitoring means has a relatively low degree of vacuum that is generated in the insert adsorber when the insert component is adsorbed and the outside air enters from a small hole of the insert component. As the insert part is set in the molding die, the small hole of the insert part rises by being blocked by the cavity surface of the molding die, so that the insert part is set in the molding die. An insert part mold set monitoring device, characterized in that the monitoring is performed. The set monitoring means compares the vacuum degree detected by the vacuum degree detection means with a first threshold value for determining that the suction tool has sucked the insert part, and the insert suction A second threshold for determining that the tool has set the insert part in the molding die;
The first threshold value is set to a value lower than the degree of vacuum generated when the insert adsorber sucks the insert part,
The second threshold value is set to a value lower than the degree of vacuum generated when the insert adsorber sets the insert part in the molding die,
The degree of vacuum generated when the insert adsorbing tool adsorbs the insert part is relatively low due to the outside air entering through the small hole of the insert part,
The degree of vacuum generated when the insert adsorber sets the insert part in the molding die is relatively high because the small hole of the insert part is blocked by the cavity surface of the molding die,
The insert part mold set monitoring apparatus according to claim 1, wherein the second threshold value is set to be higher than the first threshold value. In the central part of the insert part, a circular opening is formed through which the gate part of the molding die can enter,
The insert part mold set monitoring apparatus according to claim 1 or 2, wherein a diameter of a central circular opening of the insert part is substantially equal to an outer diameter of the gate portion. The insert part mold set according to claim 3, wherein a concave portion having a diameter substantially equal to a diameter of a central circular opening of the insert part is formed in a central portion of the suction tool for the insert. Monitoring device. It further has a relay suction tool for delivering the insert component to the insert suction tool,
A convex portion is formed at the central portion of the relay suction tool,
When the relay suction tool that sucks the insert part faces the insert part in order to deliver the insert part to the insert suction tool, the convex part of the relay suction tool is 5. The insert part mold set monitoring device according to claim 4, wherein the insert adsorbing tool and the relay adsorbing tool are relatively positioned by being received in the recess.

Images