JP6183953B2 - Rotating two-color injection molding equipment for resin windows - Google Patents

Description

  The present invention relates to a two-color rotary injection molding apparatus for a resin window in which a non-transparent annular frame is provided at the peripheral edge of the rear surface of a translucent resin panel.

  In the rotary two-color injection molding apparatus disclosed in Patent Document 1 by the present applicant, the rotary mold is inverted while the translucent resin panel is injection-molded with the rotary mold and the resin panel molding movable mold, Using a movable mold for forming the frame portion arranged at the reversal position, a non-transparent annular frame portion is injection-molded on the peripheral portion of the back surface of the resin panel held by the rotary mold to form a resin window. Then, the positioning pin protrudes into the cavity when molding the resin panel, and the resin panel is supported by the positioning pin in a state where the positioning pin is inserted into the end surface of the molded resin panel, and is held by the rotating mold when the rotating mold is reversed. The resin panel is prevented from falling off the rotary mold.

  However, since the pin hole of the positioning pin is formed in the resin panel (resin window), the pin hole can be seen from the surface and the appearance is impaired. In addition, a hard coat layer is formed on the resin window from the viewpoint of protecting the surface of the resin panel, but the hard coat agent accumulates in the pin holes and a hard coat layer with a uniform thickness is not formed, causing cracks. Cause. Furthermore, stress distortion remains in the portion with the pin hole because the cross-sectional shape is different from the other portions.

  In order to solve these problems, a rotary two-color injection molding apparatus as shown in FIG. 12 is conceivable as an apparatus that prevents the resin panel from falling off the movable mold without using positioning pins. In FIG. 12, 101 is a rotary mold having a cavity 103, and 105 is a movable mold for resin panel molding. The rotary mold 101 is provided with a drop prevention device 107. The drop prevention device 107 includes a drive device 109, one end of a rod 111 is connected to the drive device 109, and a drop prevention block 113 is connected to the other end of the rod 111.

  The resin panel molding resin 115 is filled into the cavity 103 in the mold clamping state shown in FIG. 12A. From this state, as shown in FIG. 12B, the movable mold 105 advances to open and close the cavity volume. The resin panel molding resin 115 is compressed and the resin panel 117 is injection molded. During this time, the drop-off prevention block 113 advances into the cavity 103 perpendicular to the mold opening / closing direction and seals the periphery of the cavity 103.

  After the resin panel 117 is injection-molded, although not shown, the movable mold 105 is retracted and the mold is opened, and the rotary mold 101 holding the resin panel 117 is inverted to the frame mold-forming movable mold side. Arrange the form. During this reversal, the drop-off prevention block 113 faces the peripheral portion of the resin panel 117 from the opening side of the cavity 103 to prevent the resin panel 117 from falling off the rotary mold 101.

  FIG. 12C shows a state in which the drop-off prevention block 113 is retracted from the advanced state in preparation for the frame forming step that is the next step.

JP 2011-51109 A (paragraphs 0028-0031 column, FIGS. 2-4, 6)

  However, in the latter two-color rotary injection molding apparatus, the drop prevention block 113 has advanced into the cavity 103 in the resin compression process, which is perpendicular to the mold opening / closing direction. Since the compressive force by the movable mold 105 does not act on the 113 corresponding portion, the internal stress of the molded resin panel 117 cannot be made uniform throughout, and stress distortion occurs and the surface properties deteriorate. To do. Further, when the hard coat layer is formed, the surface of the resin panel 117 is melted by the hard coat agent, the internal stress is released, and cracks are generated.

  The present invention has been made in view of such a point, and an object of the present invention is to prevent the resin panel from falling off the rotating mold without impairing the moldability of the resin panel.

  In order to achieve the above object, the present invention is characterized in that the operation timing of the drop-off preventing means has been devised.

Specifically, the present invention includes a pair of rotary molds arranged back to back across a rotation axis extending in the vertical direction and configured to be integrally rotatable about the rotation axis, and one of the two rotation types. A movable mold for molding a resin panel, which is arranged so as to be able to contact and separate in a horizontal direction with respect to the rotary mold, and is mold-clamped by an approaching operation to inject a translucent resin panel with the rotary mold, It is arranged so as to be able to contact and separate in the horizontal direction with respect to the other rotary mold, and is clamped by an approaching operation in the state where one rotary mold holding the resin panel is reversed, and the back side of the resin panel with the rotary mold And a movable part for molding a frame part that forms a resin window by injection-molding a non-translucent annular frame part at the peripheral part of the mold, and the rotary mold and the movable mold for resin panel molding are slid relative to each other in the mold opening and closing direction. Each has a slidable contact part, and when the resin panel is molded, The mold clamping position of the movable mold for molding the oil panel is the resin filling position, and the resin compression position that narrows the cavity volume from the resin filling position in the mold opening and closing direction in order to make the internal stress of the molded resin panel uniform throughout In addition, the following solution was taken for a rotating two-color injection molding apparatus for resin windows that moves by sliding the sliding contact portions against each other.

That is, according to the present invention, when the rotary mold holding the resin panel is reversed, the rotary molds advance into the cavity in the direction perpendicular to the mold opening / closing direction and open to the peripheral edge of the resin panel. A drop prevention means is provided to prevent the resin panel from falling off the rotary mold, and the drop prevention means advances to the drop prevention block and the inside of the cavity perpendicular to the mold opening / closing direction. The detachment prevention block includes an urging member for urging and a driving device coupled to the drop-off prevention block, and the detachment prevention block is urged by the urging force of the urging member by contact with the movable molds that move in accordance with a mold clamping operation On the other hand, when the resin window is removed from the rotary mold after molding, the resin window is retracted against the urging force of the urging member by the driving force of the driving device, and the dropping prevention block is removed. The resin panel molding movable mold and the drop-off prevention block each have an inclined sliding contact surface that is inclined with respect to the mold opening / closing direction. The surfaces come in contact with each other before the tip of the drop-off prevention block, and the drop-off prevention block is retracted against the biasing force of the biasing member, and the tip of the drop-off prevention block is in sliding contact with the movable mold for resin panel molding. and wherein to Rukoto so as not to contact the part.

According to the present invention, when the rotary mold is reversed after molding the resin panel, the peripheral portion of the resin panel is pressed from the cavity opening side by the drop-off preventing means even if the centrifugal force acts on the resin panel. The resin panel does not fall out of the rotary mold by receiving the centrifugal force of the mold with the drop-off preventing means.

  Moreover, since there is no pin hole of the positioning pin as in Patent Document 1, the appearance is improved, a hard coat layer having a uniform thickness is formed, and the internal stress becomes uniform over the entire resin panel, resulting in stress distortion. A resin panel (resin window) having excellent surface properties that does not generate cracks is obtained.

Further, the drop-off prevention block moves backward following the movable clamping operation, so that the drop-off prevention means has a simple structure.

In addition, since the tip of the drop-off prevention block having an acute cross section is close to the cavity in the mold-clamped state, the drop-off prevention block quickly advances during reversal of the rotary mold, and the resin panel support posture is reliably arranged. Also, since the tip of the drop-off prevention block is not in contact with the sliding contact part of the movable mold for resin panel molding, the sliding contact part of the movable mold for resin panel molding is not worn, increasing durability and preventing burrs. Is done.

It is a cross-sectional view of the rotary two-color injection molding apparatus according to the embodiment of the present invention, and shows a resin panel molding preparation step and a frame portion molding preparation step. It is a cross-sectional view of the rotary two-color injection molding apparatus showing the resin panel molding resin injection process and the frame molding resin injection process. It is a cross-sectional view of a rotating two-color injection molding apparatus showing a resin panel molding step (compression step) and a frame portion molding step. It is a cross-sectional view of a rotary two-color injection molding apparatus showing a mold opening process after molding a resin panel and a mold opening process after molding a frame part. It is an expanded sectional view which shows the state from which the movable mold for resin panel shaping | molding approached the rotation type | mold from the resin panel shaping | molding preparation process of FIG. FIG. 6 is an enlarged cross-sectional view illustrating a state in which the movable mold for molding a resin panel further approaches the rotary mold from the step of FIG. 5 and the inclined sliding contact surface of the movable mold comes into contact with the inclined sliding contact surface of the drop-off prevention block. It is an expanded sectional view which shows the state immediately before completion | finish of the filling of resin for resin panel shaping | molding from the process of FIG. It is an expanded sectional view which shows the state by which the movable mold for resin panel shaping | molding moved from the process of FIG. 7 to the resin compression position of a mold clamping position, and the resin panel was shape | molded. FIG. 9 is an enlarged cross-sectional view showing a state in which the movable mold for molding a resin panel is retracted and opened from the step of FIG. 8 and the reversing posture of the rotary mold holding the resin panel is adjusted. It is an expanded sectional view which shows the state which prepared the demolding posture of the resin-made window shape | molded. It is a perspective view which shows substantially half of resin-made windows. It is a cross-sectional view which shows the shaping | molding process of the rotation 2 color injection molding apparatus of a prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 11 shows a resin window P attached to a window opening formed on the ceiling of the vehicle so as to close the opening. The resin window P includes a light-transmitting rectangular resin panel P1 that is injection-molded, a light-transmitting rectangular annular frame P2 that is injection-molded on the peripheral edge of the back surface of the resin panel P1, and the resin panel. It comprises a hard coat layer P3 formed on both sides of P1 by coating with a hard coat agent. As the resin panel P1, a resin such as PC (polycarbonate) or PMMA (acrylic) can be used. As the frame portion P2, resins such as PC (polycarbonate), PET (polyethylene terephthalate), PBT (polybutylene terephthalate), PC / ABS alloy (polycarbonate / acrylonitrile / butadiene / styrene) can be used. As the hard coat layer P3, a resin such as an acrylic resin or a silicon resin can be used.

  The resin window P is injection-molded by the rotary two-color injection molding apparatus 1 shown in FIG. The rotary two-color injection molding apparatus 1 includes a pair of rotary molds 5 arranged on both surfaces of a rotary base plate 3 so as to be back-to-back with each other so as to be integrally rotatable by an operation of a rotary device (not shown) around a rotary shaft 3a.

  On one rotary mold 5 side of the rotary molds 5 (right side in FIG. 1), a resin panel molding movable mold 7 is attached to a mounting plate 9 and arranged so as to be able to contact and separate from the rotary mold 5. . A hot runner 11 is formed through the movable mold 7 and the mounting plate 9, an upstream end of the hot runner 11 is connected to a nozzle 13 of an injection machine (not shown), and a downstream end of the hot runner 11 is a molding surface. The valve gate 15 is formed at the corresponding position. The resin mold P1 is injection-molded with the rotary mold 5 and the movable mold 7 by clamping the movable mold 7 by the approaching operation to the rotary mold 5.

  On the other rotary mold 5 side of the two rotary molds 5 (left side in FIG. 1), a frame forming movable mold 17 is attached to an attachment plate 19 and arranged so as to be able to contact and separate from the rotary mold 5. . A hot runner 21 having a bifurcated downstream side is formed through the movable mold 17 and the mounting plate 19, and an upstream end of the hot runner 21 is connected to a nozzle 23 of an injection machine (not shown). The downstream end reaches a rectangular annular frame-forming recess 17a, and a valve gate 25 is formed at that location. Then, the movable mold 17 is clamped by the approaching operation to the rotary mold 5 and the rotary mold 5 and the movable mold 17 are used to injection-mold a frame portion P2 at the peripheral edge of the back surface of the resin panel P1 to form the resin window P. It is supposed to be.

  Each of the rotating dies 5 has a resin panel molding cavity 5a, and the side surface of the cavity 5a is used as a sliding contact portion 5b during mold clamping (see FIG. 8). On the other hand, an inclined sliding contact surface 7b inclined with respect to the mold opening / closing direction is formed on the outer periphery of the molding surface 7a of the resin panel molding movable mold 7, and between the inclined sliding contact surface 7b and the molding surface 7a. Are formed with notched surfaces 7c and 7d cut at right angles to each other, and the notched surface 7d is used as a sliding contact portion during mold clamping (see FIGS. 5 to 8). Hereinafter, the sliding contact portion is denoted by reference numeral 7d. A rectangular annular ridge 17e is formed on the outer periphery of the concave portion 17a of the frame-forming movable mold 17 to press-clamp the periphery of the resin panel P1 in the frame-forming resin injection process. An inclined sliding contact surface 17b that is continuously inclined with respect to the mold opening / closing direction is formed on the outer peripheral surface of the protrusion 17e (see FIG. 1). The slidable contact portions 5b and 7d of the rotary die 5 and the movable die 7 are slidably contacted with each other in the mold opening / closing direction when the mold is clamped to seal the peripheral edge of the cavity 5a (see FIG. 8).

  A sliding surface 5c is formed around the outer periphery of the cavity 5a of each of the rotary dies 5, and the sliding surface 5c has a drop-off prevention device as a drop-off prevention means, as shown in an enlarged view in FIGS. 27 are installed facing each other across the rotating shaft 3a, and these drop-off prevention devices 27 are disposed inside the cavity 5a perpendicular to the mold opening / closing direction when the rotating mold 5 holding the resin panel P1 is reversed. The resin panel P1 is advanced to face the peripheral edge of the resin panel P1 from the opening side of the cavity 5a to prevent the resin panel P1 from falling off the rotary mold 5 (see FIG. 9).

  The drop prevention device 27 includes a drive device 29 made of, for example, a fluid pressure cylinder. One end of a rod 31 is connected to the drive device 29, and a drop prevention block 33 is connected to the other end of the rod 31, The drive device 29 is connected to a drop prevention block 33. Further, a coil spring 35 as an urging member is mounted on the rod 31 and the coil spring 35 urges the drop-off prevention block 33 to enter the cavity 5a perpendicular to the mold opening / closing direction ( (See FIG. 5). The driving device 29 may be a type driven by an electromagnetic valve.

  The tip of the drop-off prevention block 33 is formed with an acute cross section, and an inclined slidable contact surface 33a inclined with respect to the mold opening / closing direction is formed on the distal end surface corresponding to the inclined slidable contact surface 7b of each of the movable molds 7 and 17. Has been.

  The drop-off prevention block 33 is retracted against the spring force of the coil spring 35 by contact with the movable molds 7 and 17 that move in accordance with the mold clamping operation (see FIGS. 7 and 8). When the resin window P is removed from the rotary mold 5 after molding, it is retracted against the spring force of the coil spring 35 by the driving force of the driving device 29 (see FIG. 10). Further, in the mold clamping process, the inclined sliding contact surfaces 7 b and 33 a come in contact with each other before the tip of the drop-off prevention block 33, and the drop-off prevention block 33 is moved back against the spring force of the coil spring 35. (See FIG. 6) The tip of the drop-off prevention block 33 is prevented from coming into contact with the sliding contact portion 7d of the movable die 7 and the protrusion 17e of the movable die 17 (see FIG. 7).

  In the rotary two-color injection molding apparatus 1, the movable mold 7 for resin panel molding is further advanced from the mold clamping process shown in FIG. 7 to perform mold clamping as shown in FIG. The sliding contact portions 5b and 7d of the movable mold 7 are brought into sliding contact with each other in the mold opening / closing direction. That is, at the time of molding the resin panel P1, the mold clamping position of the resin panel molding movable mold 7 is the resin filling position (see FIG. 7), and the resin compression position (see FIG. 8) that narrows the cavity volume from the resin filling position in the mold opening / closing direction. Thus, the internal stress of the molded resin panel P1 can be made uniform throughout.

  Next, a procedure for injection molding the resin window P using the rotary two-color injection molding apparatus 1 configured as described above will be described. In addition, the code | symbol with the following parentheses shows the order of a formation process.

  (1) The right side of FIG. 1 shows a resin panel molding preparation process, and the left side of FIG. 1 shows a frame part molding preparation process. The movable molds 7 and 17 are both retracted and are in the mold open state, and the drop-off prevention block 33 of the drop-off prevention device 27 of each rotary mold 5 has advanced. In the right rotating mold 5 in FIG. 1, the resin window P injection-molded in the previous process is removed, and in the left rotating mold 5 in FIG. 1, the resin panel P1 is injection molded in the previous process. The resin panel P1 is prevented from falling off the rotary mold 5 by the drop prevention block 33 and is held in the cavity 5a of the rotary mold 5.

  (2) The right side of FIG. 2 shows the resin panel molding resin injection step, and the left side of FIG. 2 shows the frame portion molding resin injection step. The movable molds 7 and 17 are both advanced and are in a clamped state.

On the right side of FIG. 2, the movable mold 7 approaches the rotary mold 5 as shown in FIG. 5 in the process of shifting from the process of FIG. 1 to the process of FIG. The sliding contact surface 7b and the inclined sliding contact surface 33a of the drop-off prevention block 33 are in sliding contact with each other as shown in FIG.

  During this time, the inclined sliding contact surfaces 7 b and 33 a come into contact with each other before the tip of the drop-off prevention block 33 to retract the drop-off prevention block 33 against the spring force of the coil spring 35. The tip does not contact the sliding contact portion 7d of the movable mold 7 as shown in FIG. Thereby, wear of the sliding contact portion 7d of the movable mold 7 can be prevented and durability can be enhanced, and occurrence of burrs can be prevented. Further, since the drop prevention block 33 is retracted following the mold clamping operation of the movable die 7, the drop prevention block 33 having a simple structure can be obtained.

As in the right side of the left side of FIG. 2, the inclined sliding contact surfaces 17 b and 33 a come into contact with each other before the tip of the drop-off prevention block 33 in the mold clamping process, and the drop-off prevention block 33 is moved to the spring of the coil spring 35. The tip of the drop-off prevention block 33 does not come into contact with the protrusion 17e of the movable mold 17 against the force.

  On the right side of FIG. 2, the resin panel molding resin R1 is injected from the nozzle 13 through the hot runner 11 and the valve gate 15 into the cavity 5a. On the left side of FIG. It is not injected into the molding recess 17a.

  (3) The right side of FIG. 3 shows a resin panel molding process, and the left side of FIG. 3 shows a frame part molding process. On the right side of FIG. 3, the movable mold 7 is in a state where the resin panel P1 is molded through a compression process in which the mold clamping position moves from the resin filling position of FIG. 7 to the resin compression position of FIG. In the process of shifting from the process of FIG. 7 to the process of FIG. 8, the movable mold 7 further advances to narrow the cavity volume in the mold opening / closing direction. As a result, the internal stress of the molded resin panel P1 can be made uniform throughout, and the resin panel P1 having excellent surface properties with no stress distortion and no occurrence of cracks after hard coating. Can do. As an example of compression at this time, although it depends on the material and thickness of the resin panel P1, it is about 0.3 mm to 1.5 mm.

  7 is further retracted from the state shown in FIG. 7 so that the sliding contact portion 5b of the rotary mold 5 and the sliding contact portion 7d of the movable mold 7 are in sliding contact with each other, and the notch surface 7c of the movable mold 7 is the rotating mold 5. The peripheral surface of the cavity 5a is sealed.

  Further, in this mold clamping state, the tip of the drop-off prevention block 33 with a sharp cross section is close to the cavity 5a, so that when the rotary mold 5 is reversed with the movable molds 7 and 17 retracted, as shown in FIG. Further, it is possible to promptly advance the drop-off prevention block 33 so that the support posture of the resin panel P1 can be surely adjusted.

  On the other hand, on the left side of FIG. 3, the frame portion forming resin R2 is injected from the nozzle 23 through the hot runner 21 and the valve gate 25 into the frame portion forming recess 17a, and the frame portion P2 is formed.

  (4) The right side of FIG. 4 shows the mold opening process after the resin panel molding, the left side of FIG. 4 shows the mold opening process after the frame part molding, and in the right side rotating mold 5 of FIG. As shown in FIG. 9, it is moved away from the movable mold 7 by the spring force of the coil spring 35. Further, due to the shrinkage of the resin panel P1, a gap C is formed between the end surface of the resin panel P1 and the side surface of the cavity 5a (sliding contact portion 5b).

  On the other hand, in the rotary mold 5 on the left side of FIG. 4, the drop-off prevention block 33 is retracted against the spring force of the coil spring 35 by driving the drive device 29 as shown in FIG. It is ready for demolding.

  (5) After the step (4), in the rotary mold 5 on the left side of FIG. 4, the resin window P is sucked and held by the mold removal tool and removed from the rotary mold 5. The process returns to the step of FIG.

  At the time of this reversal, the centrifugal force of the rotary mold 5 acts on the resin panel P1, but since the peripheral edge of the resin panel P1 is pressed from the opening side of the cavity 5a by the drop prevention block 33, the centrifugal force of the rotary mold 5 drops off. It can be received by the prevention block 33 so that the resin panel P1 does not fall off the rotary mold 5.

  As shown in FIG. 11, the resin panel P1 is coated with a hard coat agent on both sides after demolding to form a hard coat layer P3. However, since the positioning pin as in Patent Document 1 is not used, the pin impairs the appearance. There is no hole, the appearance can be improved, and the hard coat agent does not accumulate in the pin hole, and the hard coat layer P3 having a uniform thickness can be formed. Moreover, the occurrence of cracks due to the stress distortion caused by the difference in cross-sectional shape from other locations due to the presence of the pin holes and the accumulation of the hard coating agent in the pin holes can be eliminated.

  Thereafter, by repeating the above-described steps, the resin window P is continuously injection-molded by the double-rotating mold 5.

  In the above-described embodiment, the case where the resin window P is rectangular is illustrated, but the present invention is not limited to this, and a window having an appropriate shape can be applied according to the purpose and purpose. Further, the installation location of the dropout prevention device 27 can be changed and set as appropriate according to the shape of the resin window P.

  INDUSTRIAL APPLICABILITY The present invention is useful for a two-color rotary injection molding apparatus for a resin window in which a light-transmitting annular frame is provided on the peripheral edge of the back surface of a light-transmitting resin panel.

P Resin window P1 Resin panel P2 Frame 1 Rotating 2 color injection molding device 5 Rotating mold 5a Cavity 5b, 7d Sliding contact 7 Resin panel forming movable mold 7b, 33a Inclined sliding contact surface 17 Frame forming movable mold 27 Fall-off prevention device (fall-off prevention means)
29 Driving device 33 Fallout prevention block 35 Coil spring (biasing member)

Claims (1)

A pair of rotary molds (5) arranged back to back across a rotation axis extending in the vertical direction and configured to rotate integrally around the rotation axis ,
The two rotating molds (5) are arranged so as to be able to contact and separate in the horizontal direction with respect to one rotating mold (5), and are clamped by an approaching operation to be translucent resin panels (5) A movable mold for resin panel molding (7) for injection molding P1),
A state in which one rotary mold (5) holding the resin panel (P1) is inverted, arranged so as to be able to contact and separate horizontally with respect to the other rotary mold (5) of the both rotary molds (5) With the rotating mold (5), the resin mold (P1) and the resin window (P) are made by injection molding a non-transparent annular frame (P2) at the peripheral edge of the back surface of the resin mold (P1). A movable part for frame forming (17)
The rotary mold (5) and the movable mold for molding a resin panel (7) each have sliding contact portions (5b, 7d) that are in sliding contact with each other in the mold opening and closing direction,
At the time of molding the resin panel (P1), the mold clamping position of the resin panel molding movable mold (7) is the resin filling position and the internal stress of the molded resin panel (P1) is uniformed over the entire area. A rotary two-color injection molding apparatus for a resin window that moves by sliding the sliding contact portions (5b, 7d) from each other to a resin compression position that narrows the cavity volume in the mold opening / closing direction from the resin filling position,
In each of the rotating molds (5), when the rotating mold (5) holding the resin panel (P1) is reversed, the resin panel ( Falling prevention means (27) for preventing the resin panel (P1) from falling off the rotary mold (5) is provided at the peripheral edge of P1) from the cavity (5a) opening side ,
The drop prevention means (27) includes a drop prevention block (33),
A biasing member (35) for biasing the drop-off prevention block (33) into the cavity (5a) perpendicular to the mold opening / closing direction;
A drive device (29) connected to the drop-off prevention block (33),
The drop-off prevention block (33) is retracted against the urging force of the urging member (35) by contact with each movable mold (7, 17) that moves in accordance with a mold clamping operation, while after molding. When removing the resin window (P) from the rotary mold (5), the resin window (P) is retracted against the biasing force of the biasing member (35) by the driving force of the driving device (29),
The tip of the drop-off prevention block (33) is formed with an acute angle in cross section,
The resin panel molding movable mold (7) and the drop-off prevention block (33) each have an inclined sliding contact surface (7b, 33a) inclined with respect to the mold opening / closing direction,
In the mold clamping process, the inclined sliding contact surfaces (7b, 33a) come in contact with each other before the tip of the drop-off prevention block (33) to attach the drop-off prevention block (33) to the biasing member (35). is retracted against the force, the tip resin panels forming the movable mold (7) above the sliding contact portion of the resin window according to claim to Rukoto so as not to come into contact with (7d) of the captive blocks (33) Rotary two-color injection molding device.

Images