CN207972262U - Injection mold cutting mechanism - Google Patents

Abstract

The utility model belongs to the technical field of injection moulding equipment, mainly relate to an inscribe mechanism of injection mould, including front mould, backup pad and ejector pin, the installation cavity has been seted up to the backup pad, the journal stirrup is installed to the second ejector pin, install hinge post and mount pad in the installation cavity, wear to be equipped with first transfer line on the hinge post, the second transfer line is worn to be equipped with by the mount pad, first cutter spout has been seted up to the backup pad, the second cutter spout has been seted up to the front mould, the mouth of moulding plastics has been seted up to the front mould, wear to be equipped with the cutter in the first cutter spout, cutter upper portion is worn to locate in the second cutter spout, the cutter lower extreme is equipped with domaticly, the cutter bottom is equipped with spring baffle, the spring keeps off and is connected with the spring. Has the advantages that: the ejector rod drives the cutter to cut off the flow channel, an internally tangent control system does not need to be independently arranged, and the separation of a product and the flow channel is realized by utilizing the force of the ejection system.

Description

Injection mold cutting mechanism

technical field

The utility model belongs to the technical field of injection molding equipment, in particular to an injection mold internal cutting mechanism.

Background technique

In the injection molding industry, realizing fully automated production is the goal pursued by enterprises and the development trend of the industry. At home and abroad, there are many large companies that make in-mold cutting systems, but the products of these companies are relatively expensive. Because of the ever-changing types and shapes of products, these products must be customized, resulting in long delivery time, because the traditional die-cutting , it is necessary to install a special tool, and the built-in oil cylinder drives the tool to move up and down to realize cutting off the flow channel. At the same time, it is necessary to design the oil circuit in the mold, connect the special high-pressure oil pump, and the oil pump is connected to the control signal of the injection molding machine. When the injection molding machine closes the mold, the oil cylinder returns to drive the tool back. runner. This requires precise control system of the injection molding machine, otherwise the tool will damage the mold.

Mold cutting is mostly a system, including injection molding machine control signals, special tools, special micro-cylinders, oil circuits, high-pressure oil pumps, high installation costs, engineers who design molds must have rich experience, and injection molding technicians also need to install The oil cylinder will cause the shape of the mold to become larger, which is not suitable for the application of small product molds.

Utility model content

Based on the problems mentioned in the above-mentioned background technology, the utility model provides an injection mold internal cutting mechanism, which drives the cutter through the ejector rod to cut off the flow channel, without the need for a separate internal cutting control system, and uses the force of the ejection system to realize Product and runner separated. The technical scheme that the utility model adopts is as follows:

An injection mold incision mechanism, comprising a front mold, a support plate and a ejector rod, the support plate and the front mold are provided with holes matching the ejector rods, and the ejector rods are passed through the holes, so that The ejector rod includes a first ejector rod and a second ejector rod, and the support plate is provided with an installation cavity, and the installation cavity communicates with the through hole corresponding to the second ejector rod, and the side wall of the second ejector rod is used for installation There are lugs installed in the cavity, a hinged column and a mounting seat are installed in the installation cavity, a first transmission rod is pierced on the hinged column, a second transmission rod is penetrated in the horizontal direction of the mounting seat, and the support plate The top end is provided with a first cutter chute communicating with the installation cavity, and the bottom end of the front mold is provided with a second cutter chute at the corresponding position of the first cutter chute, and the front mold is positioned on the second cutter slide The corresponding side wall of the groove is provided with an injection port connected with the second cutter chute, and a cutter matching the first cutter chute is pierced in the first cutter chute, and the upper part of the cutter is pierced In the second cutter chute, the lower end of the cutter is provided with a slope, the slope contacts the right end of the second transmission rod, the left end of the second transmission rod contacts the first transmission rod, and the bottom of the cutter The end is away from the second transmission rod and is integrally formed with a spring baffle. The bottom end of the spring baffle is fixedly connected with a spring. The bottom end of the spring is in contact with the bottom end of the installation cavity. When the spring is in a natural state, the second transmission rod The right end is positioned at the top of the slope, and the first transmission rod is inclined to the left.

On the technology of above-mentioned technical scheme, the utility model has also done following improvement:

Further, the lug includes an integrally formed horizontal bar and a diagonal bar, the angle between the horizontal bar and the diagonal bar is an obtuse angle, and the horizontal bar and the diagonal bar are rectangular strip structures.

Further, the edge of the contact between the tip of the inclined rod and the first transmission rod has a rounded structure.

Further, the second transmission rod has a cuboid structure, and the left and right ends of the second transmission rod are convex arc surface structures.

Further, the top of the cutter is provided with a cutter head, and the left end surface of the cutter head is coplanar with the left end surface of the cutter.

Further, the injection port includes a cylindrical hole and a conical hole, the cylindrical hole communicates with the second cutter chute, and the top of the cylindrical hole is lower than the level of the top of the second cutter chute.

The beneficial effects of the utility model:

1. The lug is in contact with the first transmission rod. The first transmission rod is inclined to the left and connected with the second transmission rod. The second transmission rod is in contact with the slope of the cutter. When the second ejector rod rises, it drives the lug up, and the lug squeezes Press the first transmission rod to turn the upper end of the first transmission rod to the right, push the second transmission rod to move to the right and squeeze the slope, so that the cutter is lifted up to cut off the flow channel, and the force of the second ejector rod is used to realize the product and The flow channel is separated, and there is no need to set up a separate cutter system;

2. The second transmission rod is in contact with the slope surface, and the lifting stroke of the cutter is controlled by the preset slope inclination, so that the stroke is a fixed value, so as to avoid the collision damage of the cutter.

Description of drawings

The utility model can be further illustrated by the non-limitative embodiments provided by the accompanying drawings;

Fig. 1 is a structural schematic diagram of a longitudinal section of an embodiment of an injection mold incision mechanism of the present invention;

Fig. 2 is the schematic diagram of the enlarged structure of place A in Fig. 1;

Fig. 3 is the enlarged schematic diagram of the structure at B in Fig. 1;

The main component symbols are explained as follows:

Front mold 1, cylindrical hole 11, conical hole 12, second cutter chute 13, support plate 2, installation cavity 21, first ejector rod 31, second ejector rod 32, cross bar 321, inclined bar 322, cutting Knife 4, cutter head 41, slope 42, spring baffle plate 43, mounting seat 51, second transmission rod 52, hinge post 53, first transmission rod 54,.

Detailed ways

In order to enable those skilled in the art to better understand the utility model, the technical solution of the utility model will be further described below in conjunction with the drawings and embodiments.

Example

As shown in Figures 1 to 3, an injection mold incision mechanism of the present utility model includes a front mold 1, a support plate 2 and a push rod. hole, the ejector rod is passed through the hole, the ejector rod includes a first ejector rod 31 and a second ejector rod 32, the support plate 2 is provided with a mounting cavity 21, and the mounting cavity 21 corresponds to the through hole of the second ejector rod 32 Connected, the side wall of the second push rod 32 is installed with lugs in the installation cavity 21, and the hinge column 53 and the installation seat 51 are installed in the installation cavity 21. The first transmission rod 54 is pierced on the hinge column 53, and the installation seat 51 is horizontally pierced with a second transmission rod 52, the top of the support plate 2 is provided with a first cutter chute communicating with the installation cavity 21, and the bottom of the front mold 1 is provided with a second cutter at the corresponding position of the first cutter chute. Knife chute 13, the front mold 1 is provided with an injection port connected with the second cutter chute 13 on the corresponding side wall of the second cutter chute 13, and the first cutter chute is pierced with the first cutter chute. The cutter 4 matching the groove, the cutter 4 top is worn in the second cutter chute 13, the cutter 4 lower end is provided with a slope 42, the slope 42 contacts the right end of the second transmission rod 52, and the second transmission rod The left end of 52 is in contact with the first transmission rod 54, and the bottom end of the cutter 4 is integrally formed with a spring baffle 43 away from the second transmission rod 52. 21 bottom contact, when the spring 6 is in the natural state, the right end of the second transmission rod 52 is located at the top of the slope 42, and the first transmission rod 54 is inclined to the left. Rod 32 rises, and drives lug to rise, and when lug rises, it drives the upper end of the first transmission rod 54 to rotate to the right, and the rotation of first transmission rod 54 makes the second transmission rod 52 to move to the right. The second transmission rod 52 contacts and is pushed upward by the extrusion force, and the cutter 4 rises to cut off the flow channel of the injection hole; the lug includes an integrally formed cross bar 321 and an oblique bar 322, and the angle between the cross bar 321 and the oblique bar 322 It is an obtuse angle, and the cross bar 321 and the oblique bar 322 are both rectangular strip structures. When the lug rises, it is easier to drive the first transmission rod 54 to rotate through the oblique rod 322; The edge is in a rounded structure, and the second transmission rod 52 is a cuboid structure, and the left and right ends of the second transmission rod 52 are raised arc surface structures. During linkage, the smooth contact surface is more conducive to transmission; A cutter head 41 is provided, the left end surface of the cutter head 41 is coplanar with the left end surface of the cutter 4, and the cutter head 41 is coplanar with the left end surface of the cutter 4, so that the incision is smoother. The injection molding port includes a cylindrical hole 11 and a conical hole 12, and the cylindrical hole 11 communicates with the second cutter chute 13, and the top of the cylindrical hole 11 is lower than the level of the top of the second cutter chute 13, so as to avoid completely cutting off the flow path, the cutter head 41 slides with the second cutter when it rises. The top of the groove 13 contacts, resulting in damage to the cutter head.

The in-cutting mechanism of an injection mold provided by the utility model has been introduced in detail above. The description of specific embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (6)

1. on a kind of injection mould inscribe mechanism, including preceding mould (1), support plate (2) and mandril, the support plate (2) and preceding mould (1) The via to match with mandril is offered, the mandril is arranged in via, it is characterised in that：The mandril includes the first top Bar (31) and the second mandril (32), the support plate (2) offer installation cavity (21), the installation cavity (21) and the second top The corresponding via connection of bar (32), in installing, cavity (21) is interior to be equipped with journal stirrup, the installation to the second mandril (32) side wall Hinge column (53) and mounting base (51) are installed in cavity (21), the first drive link (54) is equipped on the hinge column (53), The mounting base (51) is laterally equipped with the second drive link (52), and support plate (2) top offers and installation cavity (21) First cutter sliding slot of connection, preceding mould (1) bottom end offers the second cutter sliding slot in the first cutter sliding slot corresponding position (13), the preceding mould (1) offers the injection molding being connected to the second cutter sliding slot (13) in the corresponding side wall of the second cutter sliding slot (13) Mouthful, it is equipped with the cutter (4) to match with the first cutter sliding slot in the first cutter sliding slot, cutter (4) top is worn In the second cutter sliding slot (13), cutter (4) lower end is equipped with slope surface (42), the slope surface (42) and the second drive link (52) Right end contacts, and the second drive link (52) left end is contacted with the first drive link (54), and cutter (4) bottom end is passed far from second Lever (52), which is integrally formed, is equipped with spring stop (43), and spring stop (43) bottom end is fixedly connected with spring (6), the bullet Spring (6) bottom end with installation cavity (21) bottom end contact, the spring (6) in the raw when the second drive link (52) right end position It is tilted to the left in slope surface (42) top, the first drive link (54).

2. a kind of injection mould inscribe mechanism according to claim 1, it is characterised in that：The journal stirrup includes integrally formed Cross bar (321) and brace (322), the angle between the cross bar (321) and brace (322) is obtuse angle, the cross bar (321) and Brace (322) is rectangular list structure.

3. a kind of injection mould inscribe mechanism according to claim 2, it is characterised in that：Brace (322) top and the The rounded structure of one drive link (54) contact position seamed edge.

4. a kind of injection mould inscribe mechanism according to claim 3, it is characterised in that：Second drive link (52) is length Cube structure, the left and right ends of second drive link (52) are the arc surface structure of protrusion.

5. a kind of injection mould inscribe mechanism according to claim 4, it is characterised in that：Cutter (4) top is equipped with knife Head (41), cutter head (41) left side and cutter (4) left side are coplanar.

6. a kind of injection mould inscribe mechanism according to claim 5, it is characterised in that：The injection hole includes cylindrical hole (11) and conical bore (12), the cylindrical hole (11) is connected to the second cutter sliding slot (13) and cylindrical hole (11) top is less than The level height of second cutter sliding slot (13) top.