KR-20260063703-A - INSERT NUT FEEDING UNIT AND INSERT NUT FEEDING DEVICE FOR INJECTION MOLDING INCLUDING THE SAME

Abstract

An insert nut supply unit capable of stably gripping an insert nut and supplying the gripped insert nut without shaking is disclosed. Additionally, an insert nut supply device for an injection mold equipped with the aforementioned insert nut supply unit is disclosed, capable of supplying a large quantity of insert nuts to an injection mold consistently and accurately. An insert nut supply device for an injection mold according to an embodiment comprises: a base plate; one or more extension plates movably provided in the longitudinal direction of the base plate and having a coupling groove formed at an end; and an insert nut supply unit provided in the coupling groove. The insert nut supply unit according to the embodiment comprises: a cylinder equipped with a first actuator; a rod provided within the cylinder and operated in the forward and backward direction by the first actuator; a pin provided within the rod and elastically supported in the forward and backward direction by a spring; and a finger assembly moved in the left and right direction in front of the rod by a second actuator.

Inventors

• 전윤석
• 강대현
• 권지민

Assignees

• 고려기술주식회사

Dates

Publication Date

20260507

Application Date

20241031

Claims (5)

1. A cylinder equipped with a first actuator; A rod provided within the above cylinder and operated in the forward and backward directions by the first actuator; A pin provided within the above rod and elastically supported in the front-rear direction by a spring; and An insert nut supply unit comprising a finger assembly that moves in the left and right directions in front of the rod by a second actuator.
2. In paragraph 1, The above finger assembly is, The second actuator located on the side of the cylinder, A pair of sliders that move away from or closer to each other by the second actuator above, and An insert nut supply unit comprising a finger provided on each of the above pair of sliders, the end of which is positioned in front of the rod.
3. In paragraph 2, The above load is, A protrusion is formed on the front outer surface, and The above finger is, An insert nut supply unit characterized by elastic deformation such that it spreads apart by the projection when the above-mentioned rod is moved forward.
4. Base plate; One or more extension plates configured to be movable in the longitudinal direction of the base plate and having a coupling groove formed at an end; and An insert nut supply device for an injection mold, comprising: an insert nut supply unit according to any one of claims 1 to 3 provided in the coupling groove above.
5. In paragraph 4, An insert nut supply device for an injection mold, further comprising: an elastic bearing provided in the coupling groove and surrounding the outer surface of the cylinder of the insert nut supply unit.

Description

Insert nut feeding unit and insert nut feeding device for injection mold including the same The present disclosure relates to an insert nut supply unit and an insert nut supply device for an injection mold comprising the same. Generally, injection molding is a process of producing various injection-molded products by injecting resin into a mold. Insert injection molding refers to a process in which insert objects, such as nuts, bolts, and screws made of materials other than resin (like metal), are inserted into the injection mold cavity prior to molding, and the resin and the insert objects are molded to become an integral unit. In the injection molding process accordingly, a nut insert device is currently used to automatically insert the removed nut into the cavity of the injection mold, along with removing the nut, preferably, from the insert target. Registered Patent Publication No. 10-0822118 discloses a device for extracting and supplying an insert nut from the side of an injection mold. An ‘insert nut extraction pin assembly’ provided in a device for extracting and supplying an insert nut from the side of an injection mold disclosed in the same publication comprises: a housing having an air injection hole formed through the bottom; a cover having a cylinder through hole formed in the center and formed a hollow portion by being connected to the housing; an operating cylinder having a pin operation passage formed through the inside and capable of moving forward from the air injection hole toward the cover direction by injection air supplied from the air injection hole, and inserted into the hollow portion by penetrating the cylinder through hole; a ‘cylinder elastic member’ that is externally fitted to the operating cylinder and applies an elastic force to cause the operating cylinder, which has moved forward by injection air supplied from the air injection hole, to retract backward; and an extraction pin inserted into the pin operation passage such that its tip is exposed from the operating cylinder and picks up an insert nut supplied by an insert nut feeder. The aforementioned insert nut ejection pin assembly has a problem in that the insert nut picked up by the ejection pin may detach during the process of moving the pin with the insert nut picked up or during the process of supplying the insert nut to the injection mold. FIG. 1 is a perspective view of an insert nut supply device according to an embodiment. FIG. 2 is an exploded view of an insert nut supply unit according to an embodiment. FIG. 3 is a cross-sectional view of an insert nut supply unit according to an embodiment. FIG. 4 is a perspective view of an insert nut supply device for an injection mold according to an embodiment. FIGS. 5 to 7 show the operating state of an insert nut supply unit equipped in an insert nut supply device for an injection mold according to an embodiment. The advantages and features of the present disclosure and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to make the present disclosure complete and to fully inform those skilled in the art of the scope of the invention, and the present disclosure is defined only by the scope of the claims. Throughout the specification, like reference numerals refer to like components. Referring to FIG. 1, which is a perspective view of an insert nut supply unit (100) [hereinafter referred to as 'insert nut supply unit (100)'] according to an embodiment, FIG. 2, which is an exploded view of the insert nut supply unit (100), and FIG. 3, which is a cross-sectional view of the insert nut supply unit (100), the insert nut supply unit (100) includes a cylinder (110), a rod (120), a pin (130), and a finger assembly (140). The cylinder (110) is cylindrical in shape and is equipped with a first actuator (not shown in the drawing). The first actuator can be configured to operate in various ways, such as pneumatic or hydraulic. The rod (120) has its front side exposed to the outside and its rear side located inside the cylinder (110). The rod (120) is configured to be movable in the forward and backward directions of the cylinder (110) by means of a first actuator. As an example, the rod (120) may include a body portion (121), a head portion (122), a first hollow portion (123), and a second hollow portion (124). The body part (121) has its front side exposed to the outside and its rear side located inside the cylinder (110). The head portion (122) is located at the front end of the body portion (121) and has a diameter larger than the diameter of the body portion (121). Additionally, a projection (122a) may be formed on the outer surface of the head portion (122). The first hollow portion (123) is formed inside the body por