JPH0711950Y2 - Insert injection mold equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an insert injection molding die device in which an insert work is integrally fixed to an intermediate outer periphery of an injection molded product.

(Prior Art) Conventionally, when integrally fixing an insert work to the intermediate outer periphery of an injection-molded product, as shown in FIGS. 6 and 7, the cavities 1a, 1b of the split molds 1A, 1B that slide open / close left and right. Forming recesses 1a ′, 1b ′ for fitting both sides of the insert work 2 in the middle, insert the insert work 2 gripped by the robot finger 3 between the open split molds 1A, 1B, 1B slide in the direction to close the insert work piece 2
The insert work 2 was integrally fixed to the outer periphery of the intermediate portion of the injection-molded product 4 as shown in FIG.

(Problems to be solved by the invention) By the way, in the above-mentioned prior art, when the split mold is closed, if the insert work is displaced from the recess, the insert work may not enter or the corner may be crushed, and However, there is a problem in that when the size is increased, it is injected into the gap between the insert work and the recess to cause burrs.

(Means for Solving the Problem) The present invention is intended to solve the above-mentioned problems, and is fitted over a pair of split molds which can be opened and closed to the left and right, from above, and In an injection-molding die apparatus in which a molding die is arranged to be closed by pressing the split die inward and rightward, an insert work gripping portion is provided on the molding die contact surface that abuts the upper surface of the split die. It is characterized in that it is arranged slidably in the direction perpendicular to the axial direction, an insert work contact surface is formed in the axial direction of the insert work gripping portion, and an insert work holding surface is formed in the direction perpendicular to the axis.

(Embodiment) Next, a detailed description will be given based on an embodiment of the present invention shown in FIGS. 10A and 10B are split molds that slide left and right to open and close, and upper surfaces 10a and 10b are flat. Reference numeral 11 denotes a molding die that fits into the split molds 10A and 10B from above, and a pair of work gripping portions 12A and 12B are provided on both sides of the contact surface 11a that contacts the upper surfaces 10a and 10b. The cylinders 13A and 13B are arranged so that they can slide along each other, and can slide inward and outward simultaneously by the cylinders 13A and 13B, respectively. Work holding part 12A, 12B
An annular concave groove wider than the insert work W into which the ring-shaped insert work W is fitted is formed at the tip, and the axial bottom surface thereof is the work contact surfaces 12a and 12b, and the work clamping surface 12a 'is perpendicular to the axis. , 12b 'have been formed. 14 is a mold 1
An angular cam fixed to 1, a core pin 15, a stripper plate 16 for discharging a molded product, 17 and 18 fixed side plates.

Next, the operation will be described. When the molding die 11 is slid upward as shown in Fig. 1, the angular die 13 causes the split dies 10A, 10
B slides to the left and right to open. In this state, as shown in FIG. 3, the cylinders 13A and 13B are operated to operate the work holding parts 12A and 12B.
Is slid inward along the contact surface 11a up to a predetermined amount before the final position. At this time, the ring-shaped insert work W gripped by the robot fingers is positioned opposite to the work contact surfaces 12a, 12b of the work gripping portion as shown in FIG. Next, the robot finger is raised to bring the insert work W into contact with the work contact surfaces 12a and 12b, as shown in FIG. Since the work holding surfaces 12a 'and 12b' have a predetermined gap from the width of the insert work W, the insert work W can be reliably brought into contact with the work contact surface. Then
Further, the cylinders 13A and 13B are operated to work clamping surfaces 12a ′, 1
2b 'is clamped on both sides of the insert work W. Next, the robot fingers are retracted from the molding die 11. Next, as shown in FIG. 2, the molding die 11 and the stripper plate 1
6. The fixed side plates 17 and 18 are integrally closed with the split molds 10A and 10B and injection molding is performed, and the ring-shaped insert work W is integrally fixed to the outer periphery of the intermediate portion of the injection molded product 20.

(Effect) According to the present invention, a molding die that is fitted over the pair of split dies that can be opened and closed to the left and right and is closed by pressing the split dies inward in the left and right direction. In an injection molding die device in which the insert work gripping portion is slidably arranged in the direction perpendicular to the axial direction on the molding die contact surface that abuts the upper surface of the split die, Since the insert work contact surface is formed in the axial direction of the work gripping part and the insert work holding surface is formed in the direction perpendicular to the axis, when inserting the insert work into the cavity part of the mold with the robot fingers, It is extremely easy to insert and can be securely inserted and sandwiched without fear of damaging the insert work and mold, and even in the case of multiple picking, one insert work can be inserted, robot fingers can be manufactured inexpensively, and the insert work part Since it is sufficient to use only a cylinder, the mold structure is simple and can be manufactured at low cost, and since the insert work is on the end face of the cavity, if you insert it and tighten the split mold, there will be little precision between the insert work and the cavity. it can.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention when the mold is opened, and FIG.
FIG. 3 is a front view of a closed mold of the figure, FIG. 3 is a front view of a main part before inserting the insert work into the grip portion, FIG. 4 is a view when the insert work of FIG. 3 is inserted into the grip portion, and FIG. FIG. 4 is a view when the insert work is gripped by sliding the grip part in FIG. 4 further inward, FIG. 6 is a front view of a split mold at the time of inserting the insert work of the conventional device, and FIG. 7 is a split mold of FIG. It is a front sectional view at the time of injection molding with a mold. 10A, 10B ... Split mold, 10a, 10b ... Split mold upper surface 11 ... Mold, 11a ... Contact surface 12A, 12B ... Work gripping part, 12a, 12b ... Work contact surface 12a ', 12b' ... Work Clamping surface, 13A, 13B… Cylinder 15… Core pin

Claims (1)

[Scope of utility model registration request] 1. A molding die is provided above a pair of split molds that can be opened and closed to the left and right, fitted into the split mold from above, and pressing the split molds inwardly to close the split mold. In the injection molding die device, the insert work gripping portion is slidably arranged in the direction perpendicular to the axial direction on the molding die contacting surface that abuts the upper surface of the split die, A mold device for insert injection molding, characterized in that an insert work contact surface is formed in the axial direction of and the insert work holding surface is formed in the direction perpendicular to the axis.