JP7102009B2 - Urethane thickness confirmation pin manufacturing method and manufacturing equipment - Google Patents

Description

The present invention relates to a method and an apparatus for manufacturing a urethane thickness confirmation pin for confirming the thickness of a urethane heat insulating layer provided on a urethane spraying object such as a building, a wall, a ceiling, or a floor of a building.

A pin is placed in the center of the synthetic resin circular head as a urethane thickness confirmation pin for checking the thickness of the urethane heat insulating layer provided on the wall, ceiling, floor, or other urethane sprayed object of a building or building. Proposing a projecting one (see, for example, Patent Document 1), a pin is pierced into a urethane heat insulating layer sprayed on a building to determine whether or not the urethane heat insulating layer is sprayed to a predetermined thickness. I am trying to do it.

Utility Model Registration No. 3073534

By the way, in recent years, with the change of the raw material of the hard urethane forming the urethane heat insulating layer, it is required to lengthen the urethane thickness confirmation pin.

However, in the conventional method for manufacturing urethane thickness confirmation pin described in Patent Document 1 described above, the parting surface between the fixed side and the movable side of the mold for molding the pin portion of the urethane thickness confirmation pin is urethane. Since it is provided so as to be perpendicular to the axial direction of the pin part of the thickness confirmation pin, when removing the injection-molded urethane thickness confirmation pin from the formwork, open the movable side of the formwork and then urethane. The back side of the head of the thickness confirmation pin was pressed in parallel with the axial direction of the pin portion and pushed out to be pulled out from the fixed side of the formwork.

Therefore, when the pin portion of the urethane thickness confirmation pin becomes long, it is necessary to slide the movable side of the mold by the length of the pin portion, which causes a problem that the mold becomes large and a large manufacturing space is required. was there.

In particular, recently, high heat insulation of houses is required, and the thickness of urethane sprayed on walls and ceilings is increasing, and the pin part of the urethane thickness confirmation pin for checking the thickness of urethane tends to be long. As the formwork became larger, a large manufacturing equipment and a large manufacturing space were required.

Therefore, the present invention has been made by paying attention to such a problem, and even when the length of the pin portion of the urethane thickness confirmation pin becomes long, the mold does not become large and the above-mentioned manufacturing apparatus is used. An object of the present invention is to provide a urethane thickness confirmation pin manufacturing method and a urethane thickness confirmation pin manufacturing apparatus that do not require a large manufacturing space.

In order to solve the above problems, the method for manufacturing the urethane thickness confirmation pin according to the present invention is to inject resin into the finished product-shaped cavity formed on the parting surface of the mold to manufacture the urethane thickness confirmation pin. In the method for manufacturing a pin, the urethane thickness confirmation pin is provided on a pin portion having a predetermined length for confirming the thickness of urethane and a rear end portion side of the pin portion, and the length of the pin portion is displayed. The parting surface between the fixed mold for molding the pin portion of the mold and the movable mold for molding the pin portion of the mold, which has a head and is used to mold the pin portion of the urethane thickness confirmation pin, is the urethane. It is characterized in that it is provided so as to be parallel to the axial direction of the pin portion of the thickness confirmation pin.
Further, in the method for manufacturing a urethane thickness confirmation pin according to the present invention, a resin is formed in a finished product-shaped cavity formed on a parting surface between the fixed mold for molding the pin portion and the movable mold for molding the pin portion. The urethane thickness confirmation pin molded by injecting is an eject pin for removing the pin from the pin portion of the urethane thickness confirmation pin after the movable mold for molding the pin portion is opened with respect to the fixed mold for molding the pin portion. It is also characterized in that the urethane thickness confirmation pin is removed from the fixed mold for molding the pin portion by pressing the tip and pushing it out in a direction perpendicular to the axial direction of the pin portion.
Further, in the method for manufacturing a urethane thickness confirmation pin according to the present invention, the urethane thickness is confirmed on the head side of the urethane thickness confirmation pin of the fixing frame for molding the pin portion and on the back surface side of the head of the urethane thickness confirmation pin. It is also characterized in that a urethane thickness confirmation pinning convex portion is formed so as to form a pinning concave portion and to fit into the urethane thickness confirmation pinning concave portion.
Further, in the method for manufacturing a urethane thickness confirmation pin according to the present invention, the head molding movable form for molding the upper surface of the head of the urethane thickness confirmation pin is in the axial direction of the pin portion and is the head. It is also characterized by sliding away from the upper surface of the.
Further, the urethane thickness confirmation pin manufacturing apparatus according to the present invention is characterized in that it is a manufacturing apparatus that implements any of the above-mentioned urethane thickness confirmation pin manufacturing methods.

In the method for manufacturing a urethane thickness confirmation pin according to the present invention, the parting surface, which is the boundary surface between the fixed side and the movable side of the mold for molding the pin portion of the urethane thickness confirmation pin, is the pin portion of the urethane thickness confirmation pin. It is provided so as to be parallel to the axial direction.
Therefore, the urethane thickness confirmation pin after injection molding can be taken out by opening in the direction perpendicular to the axial direction of the pin portion, so that even if the length of the pin portion of the urethane thickness confirmation pin becomes long, the mold can be used. Urethane thickness confirmation pins can be manufactured without increasing the size and without requiring a large manufacturing space.

(A) to (d) are perspective views of the urethane thickness confirmation pin of the embodiment according to the present invention, an enlarged view of a main part of the A portion, a sectional view taken along line BB in FIG. 1 (b), and FIG. 1 (a). FIG. 5 is a cross-sectional view taken along the line FF. (a) to (c) are a plan view, a front view, and a side view of the urethane thickness confirmation pin of the embodiment according to the present invention, respectively. It is a top view which shows the formwork of the urethane thickness confirmation pin manufacturing apparatus of embodiment which concerns on this invention. (A) and (b) are a sectional view taken along line CC and a sectional view taken along line DD in FIG. 3, respectively. It is a top view which shows the state when the movable frame for head molding slides after injection and curing of resin in the form of the urethane thickness confirmation pin manufacturing apparatus of embodiment which concerns on this invention. FIG. 5 is a cross-sectional view taken along the line EE in FIG. It is a top view which shows the state when the movable frame for molding a pin part slides after sliding the movable frame for head molding in the form of the urethane thickness confirmation pin manufacturing apparatus of embodiment which concerns on this invention. FIG. 7 is an enlarged plan view of a main part of the G portion in FIG. 7. It is a top view which shows the state which extruded the urethane thickness confirmation pin of the molded embodiment after sliding of the movable frame for pin part molding in the form of the urethane thickness confirmation pin manufacturing apparatus of the embodiment which concerns on this invention. FIG. 9 is an enlarged plan view of a main part of the H portion in FIG.

Hereinafter, an embodiment of a method for manufacturing a urethane thickness confirmation pin and an example of a manufacturing apparatus according to the present invention will be described with reference to the drawings. The embodiments described below are merely examples of the present invention, and the present invention is not limited to the following embodiments and can be appropriately modified within the scope of the technical idea of the present invention.

<Urethane thickness confirmation pin 1 of the embodiment>
First, the urethane thickness confirmation pin 1 of the embodiment will be described first.
As shown in FIGS. 1 and 2, the urethane thickness confirmation pin 1 of the embodiment is provided on the pin portion 11 having a predetermined length for confirming the urethane thickness and on the rear end side of the pin portion 11. , The head portion 12 and the length of the pin portion 11 are displayed.

The pin portion 11 of the urethane thickness confirmation pin 1 has a resin formed on a common fixing frame 21a for molding the pin portion, which will be described later, as shown in FIGS. 1 (a) to 1 (c) and FIGS. A resin injection trace recess 11a is formed, which is injected from the injection hole 22c into a cavity (space) formed in the shape of the urethane thickness confirmation pin 1 of the embodiment and separated from the runner portion after curing.

Therefore, in the urethane thickness confirmation pin 1 of the embodiment, since the resin injection trace recess 11a is formed in the pin portion 11, the diameter of the pin portion 11 was conventionally 3 mm, but in the present embodiment, the resin injection trace recess 11a The diameter of the pin portion 11 on which the is formed is increased by, for example, 1 mm to 4 mm to reinforce the strength. As a result, even when the pin portion 11 is pierced into the urethane that has been sprayed and cured on the wall or ceiling, the thickness of the sprayed urethane can be confirmed without bending the pin portion 11 in the vicinity of the resin injection trace recess 11a. Further, since urethane having a thickness of 100 mm or more has hardness, the pins produced by the same mold were reinforced with strength of 4 mm or more.

Further, since the pin portion 11 of the urethane thickness confirmation pin 1 is manufactured by the manufacturing apparatus 2 according to the present invention, as shown in FIG. 2C, PL (party) is formed in the axial line of the pin portion 11, that is, in the longitudinal direction. Parting line) 11b is generated.

On the other hand, on the back surface of the head portion 12 of the urethane thickness confirmation pin 1 of the embodiment, as shown in FIGS. When the mold 20 is opened by sliding in the X-axis direction, the head of the common fixed frame 21a for molding the pin portion is prevented from adhering to the movable frame 22 for molding the pin portion and moving the urethane thickness confirmation pin 1 after injection molding. A urethane thickness confirmation pinning recess 12a into which the urethane thickness confirmation pinning convex portion 21a2 formed on the part molding movable frame 23 side is formed is formed.

Further, when the urethane thickness confirmation pin 1 having a pin portion 11 having a length of 60 mm or more is created, in order to prevent shrinkage due to meat sink marks, as shown in FIG. Form a curved concave surface 12b that is recessed toward the surface side. Therefore, the head 12 molded portion of the pin portion molding common fixed frame 21a and the pin portion molding common movable frame 22a is curved in a convex shape so that a curved concave surface 12b can be formed on the back surface of the head 12 of the urethane thickness confirmation pin 1. is doing.

Therefore, not only the urethane thickness confirmation pin fastening recess 12a on the back surface of the head 12 of the urethane thickness confirmation pin 1 that fits into the urethane thickness confirmation pin fastening convex portion 21a2, but also the curved concave surface 12b on the back surface of the head 12 is common for pin portion molding. It fits into the convexly curved head 12 molded portion of the fixed frame 21a and also fulfills the above-mentioned role.

Further, the thickness of the urethane spraying object, for example, 15 mm, 20 mm, 25 mm, 30 mm, ... 100 mm, 120 mm, 140 mm, 160 mm, ... Is shown on the upper surface of the head 12 of the urethane thickness confirmation pin 1. Therefore, a number or the like indicating the length of the pin portion 11 according to the thickness is displayed by embossing, or is punched out from the upper surface to the back surface of the head 12.

In addition, in FIG. 2A, the head 12 is punched out and displayed as '160', the length of the pin portion 11 is 160 mm, and the urethane thickness confirmation confirms the thickness of the urethane sprayed object of 160 mm. It shows that it is pin 1.

In addition, as a material for the urethane thickness confirmation pin 1, in order to eliminate errors in measured values due to strength and sink marks, if the length of the pin portion 11 is 10 mm to 30 mm, it is made of polypropylene resin, and if it is longer than 35 mm, sink marks are used. It is made of ABS resin to eliminate it.

<Urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment>
Next, the mold 20 and the eject pin 21c of the urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment configured as described above will be described.

FIG. 3 is a plan view showing a closed mold 20 in the urethane thickness confirmation pin manufacturing apparatus 2 according to the embodiment of the present invention, and FIGS. 4 (a) and 4 (b) are lines CC in FIG. 3, respectively. It is a cross-sectional view and a cross-sectional view taken along the line DD.

As shown in FIGS. 3 and 4 (a) and 4 (b), the urethane thickness confirmation pin manufacturing apparatus 2 according to the embodiment of the present invention is a parting that is a boundary surface between the fixed side and the movable side of the mold 20. A cavity (space) in the shape of the finished urethane thickness confirmation pin 1 is formed on the surface, and polypropylene resin, ABS resin, etc. are injected into the cavity (space) through the resin injection hole 22c described later to make urethane. An apparatus for manufacturing a thickness confirmation pin 1, which includes a fixed frame 21 for molding a pin portion on the fixed side as a mold 20, a movable frame 22 for molding a pin portion on the movable side, and a movable frame 23 for molding the head. ..

The pin portion molding fixing frame 21 is a so-called cavity fixing side mold, and is a common frame that does not change even when the length of the pin portion 11 is different from 130 mm, 145 mm, 160 mm, etc. It is composed of a frame 21a and a length adjusting fixed frame 21b for pin portion molding, which is a length adjusting piece connected to a common fixing frame 21a for molding the pin portion and having a different length according to the length of the pin portion 11. The common fixing frame 21a for molding the pin portion and the length adjusting fixing frame 21b for molding the pin portion are formed with groove portions 21a1, 21b1 corresponding to the shape of the pin portion 11, respectively.

The surface of the pin portion molding fixed frame 21 for molding the back surface side of the head 12 on the head molding movable frame 23 side of the pin portion molding common fixed frame 21a is shown in FIGS. 8 and 10 described later. As described above, the urethane thickness confirmation pin fastening recess 12a is formed on the back surface side of the head 12 of the urethane thickness confirmation pin 1, and the common fixed frame 21a for pin molding to the common movable frame 22a for pin molding are moved in the X-axis direction. When the mold 20 is slid and opened, the urethane thickness confirmation pin 1 after injection molding adheres to the movable frame 22 for molding the pin portion and is movable for head molding of the common fixed frame 21a for molding the pin portion so as not to move. A urethane thickness confirmation pinning convex portion 21a2 formed on the frame 23 side is provided.

Further, after the pin portion molding movable frame 22 and the head molding movable frame 23 are opened in the pin portion molding common fixing frame 21a of the pin portion molding fixing frame 21, as shown in FIGS. 3 to 10, after the pin portion molding movable frame 22 and the head molding movable frame 23 are opened. The urethane thickness confirmation pin 1 slides in the X-axis direction perpendicular to the axial direction of the pin portion 11 of the urethane thickness confirmation pin 1 and presses against the pin portion 11 of the urethane thickness confirmation pin 1 with the tip portion from the mold 20 to the urethane thickness confirmation pin 1. An eject pin 21c is provided so as to be slidable.

The movable frame 22 for molding the pin portion is a mold on the movable side called a so-called core configured to slide in the X-axis direction, and does not change even when the length of the pin portion 11 is different from 30 mm, 45 mm, 60 mm, or the like. For pin part molding, which is a length adjustment piece that is connected to the common movable frame 22a for pin part molding, which is a common piece, and the common movable frame 22a for pin part molding, and the length differs depending on the length of the pin part 11. It is composed of a length-adjustable movable frame 22b and the like, and groove portions 22a1, 22b1 corresponding to the shape of the pin portion 11 are formed on the common movable frame 22a for molding the pin portion and the length-adjustable movable frame 22b for molding the pin portion, respectively. Has been done.

Further, as shown in FIGS. 3 and 5, the fixed side of the mold 20 is attached to the common movable frame 22a for molding the pin portion and the length-adjustable movable frame 22b for molding the pin portion, which constitute the movable frame 22 for molding the pin portion. A resin injection hole 22c is formed on the parting surface, which is the boundary surface between the movable side and the movable side, as a passage for the resin to be injected into the cavity (space) in the shape of the finished urethane thickness confirmation pin 1.

The movable frame 23 for molding the head is a form on the movable side called a so-called core configured to slide in the Y-axis direction, and molds the head 11 of the urethane thickness confirmation pin 1 of the head 12. A groove portion 23a corresponding to the shape is formed, and as shown in FIG. 2A or the like, the groove portion 23a is convex for indicating a number or the like indicating the length of the pin portion 11 by embossing or punching through. A part or the like is formed.

<Manufacturing method of urethane thickness confirmation pin 1 of the embodiment>
Next, a method of manufacturing the urethane thickness confirmation pin 1 by the urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment configured as described above will be described.

In the urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment, the mold 20 such as the pin portion molding fixed frame 21, the pin portion molding movable frame 22, and the head molding movable frame 23 configured as described above is shown in FIG. As shown in 3 and FIG. 4, polypropylene is passed through the resin injection holes 22c formed in the common movable frame 22a for pin portion molding and the length adjusting movable frame 22b for pin portion molding, which are closed and constitute the movable frame 22 for pin portion molding. A resin such as resin or ABS resin is sent, and the resin is injected into the cavity (space) surrounded by the grooves 21a1,21b1, 22a1,22b1,23a and cured to mold the urethane thickness confirmation pin 1.

Next, in the urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment, after molding and curing the injected resin, for example, as shown in FIGS. 5 and 6, the head molding movable frame 23 is slid in the Y-axis direction.

Then, as shown in FIGS. 5 and 6, the head molding movable frame 23 is separated from the pin portion molding fixed frame 21 and the pin portion molding movable frame 22, so that the head of the urethane thickness confirmation pin 1 of the embodiment is used. 12 The upper surface side is exposed.

Next, in the urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment, as shown in FIG. 7, the movable frame 23 for molding the pin portion is slid in the X-axis direction. Then, as shown in FIG. 7, the lower half of the head portion 12 of the urethane thickness confirmation pin 1 and the half of the pin portion 11 are exposed.

At that time, as shown in FIG. 8, the surface of the pin portion molding fixed frame 21 on the head molding movable frame 23 side of the pin portion molding common fixed frame 21a protrudes toward the head molding movable frame 23 side. A convex portion 21a2 for fixing the urethane thickness confirmation pin is provided, and the convex portion 21a2 for fixing the urethane thickness confirmation pin is a concave portion 12a for fixing the urethane thickness confirmation pin on the back surface side of the head 12 of the urethane thickness confirmation pin 1 (FIG. 1 (a), Since it is fitted in (d), etc.), even when the common movable frame 22a for pin molding slides in the X-axis direction from the common fixed frame 21a for pin molding, the mold 20 opens, as shown in FIG. As shown in FIG. 8 and the like, the urethane thickness confirmation pin 1 after injection molding adheres to the movable frame 22 for molding the pin portion and does not move.

Finally, in the urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment, as shown in FIGS. 9 and 10, the eject pin 21c provided in the pin portion molding common fixing frame 21a of the pin portion molding fixing frame 21 is X. Slide in the axial direction, press the pin portion 11 of the urethane thickness confirmation pin 1 with the tip of the eject pin 21c, remove the urethane thickness confirmation pin 1 from the common fixing frame 21a for molding the pin portion, and remove the urethane thickness confirmation pin 1 from the urethane thickness confirmation pin 1. Manufacturing is complete.

Therefore, as shown in FIGS. 1 (a) and 1 (d), the urethane thickness confirmation pin fixing convex portion 21a2 is fitted on the back surface side of the head 12 of the urethane thickness confirmation pin 1. 12a is formed.

Further, as shown in FIGS. 1 (a) to 1 (c) and FIGS. 2 (b) and 2 (c), the pin portion 11 of the urethane thickness confirmation pin 1 manufactured by the urethane thickness confirmation pin manufacturing apparatus 2 of the embodiment is provided. Resin is injected from the resin injection hole 22c, and a resin injection trace recess 11a, which is a trace separated from the runner, may remain.

Further, the pin portion 11 of the urethane thickness confirmation pin 1 manufactured by the urethane thickness confirmation pin manufacturing apparatus 2 of the present embodiment has a parting between the pin portion molding fixed frame 21 and the pin portion molding movable frame 22. As shown in FIG. 2C, the line (PL) 11b is formed in the longitudinal direction, which is the axial direction of the pin portion 11.

Further, as shown in FIG. 2A and the like, the head portion 12 of the urethane thickness confirmation pin 1 manufactured by the urethane thickness confirmation pin manufacturing apparatus 2 of the present embodiment has a number or the like indicating the length of the pin portion 11. While it is displayed by embossing or a numerical value that penetrates from the upper surface to the back surface of the head 12 is displayed, a urethane thickness confirmation pinning recess 12a is formed on the back surface of the head 12.

<Summary>
As described above, in the method for manufacturing the urethane thickness confirmation pin 1 and the urethane thickness confirmation pin manufacturing apparatus 2 according to the embodiment of the present invention, the pin portion molding fixing frame 21 for molding the pin portion 11 of the urethane thickness confirmation pin 1 The parting surface of the movable frame 22 for molding the pin portion and the movable frame 22 for molding the pin portion is provided so as to be parallel to the axial direction of the pin portion 11 of the urethane thickness confirmation pin 1, and the movable frame 23 for molding the head portion is provided.

Therefore, the hollow (space) surrounded by the groove portions 21a1,21b1, 22a1,22b1 and the groove portion 23a of the pin portion molding fixed frame 21, the pin portion molding movable frame 22 and the head molding movable frame 23 constituting the mold 20 respectively. ), After curing, the movable frame 22 for molding the pin portion can be opened in the direction perpendicular to the axial direction of the pin portion 11 to take out the urethane thickness confirmation pin 1 after injection molding. Even when the length of the pin portion 11 becomes long, the urethane thickness confirmation pin 1 can be manufactured without increasing the size of the mold 20 and without requiring a large manufacturing place.

In particular, in the method for manufacturing the urethane thickness confirmation pin 1 of the embodiment according to the present invention, the movable frame 22 for molding the pin portion is perpendicular to the pin portion 11 of the urethane thickness confirmation pin 1 with respect to the fixed frame 21 for molding the pin portion. After sliding open in a certain X-axis direction and exposing the pin portion 11 of the urethane thickness confirmation pin 1 and half of the head 12 in the X-axis direction, the eject pin 24 slides in the X-axis direction to expose the urethane thickness confirmation pin. Since the urethane thickness confirmation pin 1 is removed from the eject pin portion molding fixing frame 21 by pressing the pin portion 11 of 1, the slide amount (stroke) of the eject pin 24 in the Y-axis direction is small, and the mold is also in this respect. The urethane thickness confirmation pin 1 can be manufactured because the size of 20 is increased, a large device is not used, and a large manufacturing place is not required.

The pin portion 11 of the urethane thickness confirmation pin 1 manufactured by the urethane thickness confirmation pin manufacturing apparatus 2 of the present embodiment is shown in FIGS. 1 (a) to 1 (c) and FIGS. 2 (b) and 2 (c). As described above, the resin injection trace recess 11a, which is a trace of the resin being injected from the resin injection hole 22c and separated from the runner, may remain. However, while the diameter of the pin portion 11 is, for example, about 4 mm, the resin injection trace recess 11a Since the depth of the resin is less than 1 mm and the diameter of the pin portion 11 of the conventional urethane thickness confirmation pin 1 is 3 mm, there is no problem in terms of strength.

Further, the pin portion 11 of the urethane thickness confirmation pin 1 manufactured by the urethane thickness confirmation pin manufacturing apparatus 2 of the present embodiment has a parting between the pin portion molding fixed frame 21 and the pin portion molding movable frame 22. The line (PL) 11b is formed in the longitudinal direction of the pin portion 11. Therefore, unlike the conventional parting line (PL) 11b, the parting line (PL) 11b is parallel to the piercing direction of the urethane thickness confirmation pin 1, so that it does not become a resistance when the pin portion 11 is pierced into the urethane, and the urethane thickness can be easily increased. There is also the effect of being able to confirm.

Further, in the method for manufacturing the urethane thickness confirmation pin 1 and the urethane thickness confirmation pin manufacturing apparatus 2 according to the embodiment of the present invention, the head molding movable formwork 23 for molding the upper surface of the head 12 of the urethane thickness confirmation pin 1 is Since the pin portion 11 slides away from the upper surface of the head 12 in the axial direction, the mold 20 does not become large and does not require a huge device, and a large manufacturing space is also required. The urethane thickness confirmation pin 1 can be manufactured without this.

In the description of the above embodiment, the molds 20 such as the pin portion molding fixed frame 21, the pin portion molding movable frame 22, and the head molding movable frame 23 are closed, and the groove portions 21a1,21b1, 22a1,22b1 thereof are closed. The urethane thickness confirmation pin 1 is molded by injecting resin or the like into the cavity (space) surrounded by the groove 23a, and then the movable frame 23 for head molding is first slid in the Y-axis direction, and then the pin portion is molded. Although it has been described that the movable frame 23 for molding is slid in the X-axis direction, the present invention is not limited to this, and after molding the urethane thickness confirmation pin 1, first, the movable frame 23 for molding the pin portion is slid in the X-axis direction. The movable frame 23 for molding the head may be slid in the Y-axis direction, and then the movable frame 23 for molding the head may be slid in the Y-axis direction after the urethane thickness confirmation pin 1 is molded. Of course, at the same time as sliding in the direction, the movable frame 23 for molding the pin portion may be operated so as to slide in the X-axis direction.

1 Urethane thickness confirmation pin 11 Pin part 11a Resin injection trace recess 11b PL (parting line)
12 Head 12a Urethane thickness confirmation pinning recess 12b Curved concave surface 2 Urethane thickness confirmation pin manufacturing equipment 20 Formwork 21 Pin molding fixing frame 21a Pin molding common fixing frame 21a1 Groove 21a2 Urethane thickness confirmation pinning convex 21b Pin part molding length adjustment fixed frame 21b1 Groove part 21c Eject pin 22 Pin part molding movable frame 22a Pin part molding common movable frame 22a1 Groove part 22b Pin part molding length adjustment movable frame 22b1 Groove part 22c Resin injection hole 23 heads Movable frame for part molding 23a Groove

Claims (5)

In the method of manufacturing urethane thickness confirmation pins, resin is injected into the finished product-shaped cavity formed on the parting surface of the mold to manufacture urethane thickness confirmation pins.
The urethane thickness confirmation pin is
A pin part with a predetermined length to check the thickness of urethane,
It has a head provided on the rear end side of the pin portion and indicating the length of the pin portion.
The parting surface between the fixed mold for molding the pin portion of the mold and the movable mold for molding the pin portion of the mold for molding the pin portion of the urethane thickness confirmation pin is the axial center of the pin portion of the urethane thickness confirmation pin. A method for manufacturing a urethane thickness confirmation pin, which is provided so as to be parallel to the direction. In the method for manufacturing a urethane thickness confirmation pin according to claim 1,
The urethane thickness confirmation pin molded by injecting resin into the finished product-shaped cavity formed on the parting surface between the fixed form for molding the pin portion and the movable form for molding the pin portion is the pin. After the movable formwork for molding the pin part is opened with respect to the fixed formwork for part molding, the tip of the eject pin for pin removal is pressed against the pin part of the urethane thickness confirmation pin to be perpendicular to the axial direction of the pin part. A method for manufacturing a urethane thickness confirmation pin, which comprises removing the urethane thickness confirmation pin from the fixed mold for molding the pin portion by extruding in the direction. In the method for manufacturing a urethane thickness confirmation pin according to claim 1 or 2.
On the head side of the urethane thickness confirmation pin of the fixing frame for molding the pin portion, a recess for fixing the urethane thickness confirmation pin is formed on the back surface side of the head of the urethane thickness confirmation pin for fixing the urethane thickness confirmation pin. A method for manufacturing a urethane thickness confirmation pin, which comprises forming a convex portion for fastening a urethane thickness confirmation pin that protrudes so as to fit in a concave portion. In the method for manufacturing a urethane thickness confirmation pin according to any one of claims 1 to 3.
The head molding movable formwork for molding the upper surface of the head of the urethane thickness confirmation pin is characterized in that it slides in the axial direction of the pin portion and away from the upper surface of the head. How to make a confirmation pin. An apparatus for manufacturing a urethane thickness confirmation pin, which carries out the method for manufacturing a urethane thickness confirmation pin according to any one of claims 1 to 4.

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