CN221112658U

CN221112658U - Injection mold with quick die change insert

Info

Publication number: CN221112658U
Application number: CN202322655842.8U
Authority: CN
Inventors: 张志林; 周林
Original assignee: SHANGHAI PUDONG MEILING PLASTIC PRODUCTS CO LTD
Current assignee: SHANGHAI PUDONG MEILING PLASTIC PRODUCTS CO LTD
Filing date: 2023-09-28
Publication date: 2024-06-11
Anticipated expiration: 2033-09-28

Abstract

The utility model discloses an injection mold with a quick mold changing insert, which comprises an insert which is detachably fixed on a molding surface of the mold, wherein the bottom of the insert is fixedly connected with a connecting rod, and the connecting rod is inserted into the mold through a mounting hole; and a through hole is also transversely formed in the die, and a push rod is inserted into the connecting rod at the vertical position of the through hole to form a push rod structure for fixing the insert. Through a ejector rod structure, the screw thread structure of the fixed rod piece in the die is omitted, the insert can be ejected through operating the fixed block outside the die, and the disassembly time of the insert is saved.

Description

Injection mold with quick die change insert

Technical Field

The utility model relates to the field of injection molds, in particular to an injection mold with a quick mold changing insert.

Background

When producing different specification products under same general class part, adopt usually to inlay the inlay piece and implement the change in the mould, avoid because of the too high expense of repeated die sinking product. Fig. 1 shows a conventional insert fixing structure of an injection mold. The insert is fixed to the rear mold 2 by screws 4 passing through the cavity 2 a. Although the mold insert has the advantages of simple structure and low cost, the replacement of the mold insert is troublesome, and the mold insert can be taken out only by disassembling the screw after the mold is disassembled from the molding machine and the mold cavity core is disassembled. The insert is time-consuming and labor-consuming to switch, the efficiency is low, and related parts are easy to damage.

Disclosure of utility model

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an injection mold with a quick mold-changing insert comprises an insert which is detachably fixed on a molding surface of the mold,

The bottom of the insert is fixedly connected with a connecting rod, and the connecting rod is inserted into the die through a mounting hole; and a through hole is also transversely formed in the die, and a push rod is inserted into the connecting rod at the vertical position of the through hole to form a push rod structure for fixing the insert.

In a preferred embodiment of the utility model, the connecting rod is provided with an inclined hole, the hole end surface of the inclined hole is connected with the through hole, the hole diameter of the inclined hole gradually decreases from the hole end surface to the other end, and the front end part of the ejector rod is provided with a semi-cone for being inserted into the inclined hole to be fixed.

In a preferred embodiment of the utility model, the diameter of the end face of the hole is slightly smaller than the inner diameter of the through hole, when the connecting rod is completely installed in the mounting hole, the lower surface of the inclined hole is flush with the through hole, and the lower surface of the semi-cone is tightly attached to the lower surface of the inclined hole so as to tightly prop up the connecting rod.

In a preferred embodiment of the present utility model, the other end of the ejector rod is connected to a fixed block, and the lower surface of the semi-cone is connected to the upper surface of the inclined hole by rotating the fixed block, so that the insert is lifted up for easy assembly and disassembly.

In a preferred embodiment of the utility model, the fixing block is fixed to the mold by a fastener.

The utility model has the beneficial effects that:

According to the injection mold with the quick mold changing insert, provided by the utility model, through the ejector rod structure, the threaded structure of the fixed rod piece in the mold is omitted, the insert can be ejected by operating the fixed block outside the mold, and the disassembly time of the insert is saved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a prior art schematic.

Fig. 2 is a schematic diagram of the overall structure of the present utility model.

Fig. 3 is an enlarged partial view of the insert fixing structure.

Fig. 4 is a schematic structural view of the ejector pin.

Fig. 5 is a schematic view of the rotation of the ejector pin.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and the above description is for convenience of description of the present utility model to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description, an element is referred to as being "on," "fixed" to, "connected" to, "engaged" with, etc. another element, which may be directly on, fixed to, connected to, engaged with or contacting the other element, or intervening elements may be present.

Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the application may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide yet additional embodiments. Throughout the drawings, like reference numbers indicate identical or functionally identical elements.

Referring to the injection mold of the quick-change insert of fig. 2, the bottom of the insert 3 is fixed by penetrating a connecting rod 10 into the cavity 2a and the rear mold 2. The connecting rod 10 is slidably connected with the mold, so that a through hole 24 is transversely formed in the rear mold, and the through hole is transversely inserted into the connecting rod 10 through the tapered ejector rod 20 to lock the vertical position thereof.

Referring to fig. 3 and 4 in combination, the connecting rod 10 is transversely provided with an inclined hole 11, and the diameter of the inclined hole 11 gradually decreases from the hole end surface 13 to the inner side. The hole end face 13 is connected to the through hole 24, and the inner diameter of the hole end face 13 is slightly smaller than the inner diameter of the through hole 24, so that when the connecting rod 10 is fully inserted into the mounting hole 3a, the inclined hole lower surface 15 of the inclined hole 11 is flush with the edge of the through hole 24, and the inclined hole upper surface 14 is slightly lower than the through hole 24. The ejector pin 20 is composed of a rod body 21 and a half cone 22 at the front end, when the half cone 22 is inserted into the inclined hole 11, the lower surface 23 of the ejector pin is tightly attached to the lower surface 15 of the inclined hole, so that the connecting rod 10 is pressed in the mounting hole 3a, and the degree of ejection can be changed by adjusting the depth of the half cone 22 into the inclined hole 11. A gap 14 is left between the half cone 22 and the upper surface 14 of the inclined hole so that it will not interfere with the inclined hole 11 in the tight-against state. The ejector rod 20 is fixed on the die through a fixing block 30 arranged at the other end of the rod body 21 by a fastener. The fixing block 30 is in a round shape, and the fixing block 30 is rotated to drive the ejector rod 20 to rotate, so that the lower surface 23 rotates to be in contact with the upper surface 14 of the inclined hole, and the connecting rod 10 is slightly jacked upwards, so that the insert 3 can be taken out conveniently.

Claims

1. The injection mold with the quick mold changing insert comprises an insert which is detachably fixed on the molding surface of the mold, and is characterized in that,

2. The injection mold with the quick die change insert according to claim 1, wherein the connecting rod is provided with an inclined hole, a hole end surface of the inclined hole is connected with the through hole, a hole diameter of the inclined hole gradually decreases from the hole end surface to the other end, and a semi-cone for being inserted into the inclined hole is arranged at the front end part of the ejector rod.

3. The injection mold with a quick change insert according to claim 2, wherein the bore diameter of the bore end face is slightly smaller than the inner diameter of the through hole, the lower surface of the inclined hole is flush with the through hole when the connecting rod is completely installed in the installation hole, and the lower surface of the half cone is tightly attached to the lower surface of the inclined hole so as to tightly press the connecting rod.

4. An injection mold with a quick change insert as claimed in claim 2 or 3 wherein the other end of the ejector pin is connected to a fixed block, and the lower surface of the half cone is connected to the upper surface of the inclined hole by rotating the fixed block to jack up the insert for easy assembly and disassembly.

5. The injection mold with a quick change insert as claimed in claim 4 wherein said fixed block is secured to said mold by fasteners.