CN201120681Y - An oblique pin fastening fixture - Google Patents

Abstract

The utility model provides an oblique pin fastening clamp which comprises a screw and a base; two opposite concave grooves used for being clamped in the T-shaped groove on the rear part of the oblique pin are arranged on the lateral wall on one end of the base; the other end of the base is provided with an inner thread; the screw and the inner thread are matched with each other for application. The oblique pin fastening clamp is adopted; the base is sleeved in the T-shaped groove on one end of the oblique groove through the concave groove on one end of the base; and then the base is fixed on the mould by the screw stably; thereby, the oblique pin is pulled to be tightly jointed with the contact surface of the mould; the looseness problem of the oblique pin emerged during the machining process is solved effectively and the machining quality is guaranteed.

Description

An oblique pin fastening fixture

technical field

The utility model relates to a clamp used for fastening oblique pins in the field of die design.

Background technique

The oblique pin is an indispensable part of the plastic mold, it can solve the mold release problem of the undercut or side hole on the inner and outer surfaces of the plastic part. At present, there is a type of mold, as shown in Figure 6 and Figure 7. Its structure is as follows: the core part of the male mold mainly includes the upper insert 7 of the male mold, the lower insert 8 of the male mold and other inserts 9, the inner frame of the male mold 6, Slant pin 4 etc., when coordinating, slant pin 4 is fixed in the slant pin hole between male mold insert 7,8 and male mold benevolence frame 6. Since this type of mold belongs to a standard mold, the length of the oblique pins is uniform and short. In the oblique pin hole, there are many matching workpieces, including the upper insert 7 of the male die, the lower insert 8 of the male die, and the core frame 6 of the male die. The surface of each workpiece corresponding to the oblique pin hole has a certain tolerance range. In this way, in the process of mold processing, it is difficult to fasten the oblique pin well, and there is always a slight jump, which easily leads to abnormal processing.

Contents of the invention

In order to solve the above problems, the utility model provides an oblique pin fastening fixture used in conjunction with the oblique pin, through which the oblique pin can be firmly fixed in the mold without loosening during processing.

The technical scheme that the utility model adopts is as follows:

Provide a kind of oblique pin fastening fixture, including screw and base, the side wall of one end of the base is provided with two corresponding grooves, which are used to be inserted into the T-shaped groove at the tail of the oblique pin, and the other end of the base is provided with Internal threads, screws are used in conjunction with internal threads.

Using the oblique pin fastening fixture, the base is sleeved in the T-shaped groove at one end of the oblique pin through the groove at one end, and then the base is fixed on the mold with screws, so that the oblique pin can be tightened and tightly attached to the mold The contact surface can effectively solve the problem of oblique pin loosening in the process of processing. Guarantee the processing quality.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a longitudinal sectional view of Fig. 1;

Fig. 3 is the schematic diagram that the utility model cooperates with oblique pin;

Fig. 4 is a longitudinal sectional view in Fig. 3;

Fig. 5 is a partial enlarged view of the position A where the utility model cooperates with the oblique pin T-shaped groove in Fig. 3;

Fig. 6 and Fig. 7 are schematic diagrams of the working state of the utility model in cooperation with the oblique pin and the core of the male mold;

Fig. 8 is a partial enlarged view of the cooperation B between the utility model in Fig. 6 and the oblique pin and the guide plate.

Fig. 9 is a partially enlarged view of the joint C between the utility model in Fig. 6 and the oblique pin and the insert on the male mold;

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in FIG. 1 to FIG. 2 : the embodiment of the utility model includes a base 1 and a spacer 2 sleeved on a screw 3 . The base 1 is a cylindrical rod, and the side wall at one end is provided with two corresponding grooves 11, the distance from the top wall of the groove 11 to the end of the base is H, and the thickness of the base body between the side walls of the two grooves 11 is K; The other end of the base is provided with an internal thread 12 , and the screw 3 passes through the spacer 2 and is fastened in the internal thread 12 .

As shown in Figure 3 to Figure 5: one end of the oblique pin 4 is provided with a T-shaped slot 5, and the two corresponding grooves 11 at one end of the base 1 are clamped in the T-shaped slot 5, and H is equal to the transverse groove width of the oblique pin T-shaped slot. Consistent, the longitudinal groove width of the T-shaped groove of the K oblique pin is consistent, and both places are interference fit. This can well ensure that the clamp does not rotate in the T-shaped slot of the oblique pin, so that the screw can be tightened effectively.

As shown in Fig. 6 and Fig. 7, the applicable molds for the implementation of the utility model include: male mold core frame 6, male mold upper insert 7, male mold lower insert 8 and other inserts 9, and male mold core frame 6 guide plates 10 at the bottom.

During the specific operation, at first, the oblique pin 4 is matched with the base 1, and then the upper insert 7 of the male mold, the lower insert 8 of the male mold and other small inserts 9 are matched in the core frame 6 of the male mold, and then the oblique Put the pin 4 and the base 1 together into the oblique pin holes between the male mold inserts and the male mold core frame 6, so that the base 1 will be exposed outside the male mold core frame 6, and then insert the guide plate 10 into the corresponding hole Pass through the base 1 until the guide plate 10 clings to the bottom of the male die frame 6. Finally, insert the screw 3 covered with the spacer 2 into the internal thread 12 of the base 1, and tighten the screw to fix the oblique pin 4 on the The deflector 10 sweeps across that.

As shown in Figure 8 and Figure 9, after the screws are tightened, the guide plate 10 is tightly clamped between the male die frame 6 and the spacer 2, and due to the force transmission, the oblique pin 4 is tightened at the same time, so that the groove of the base 1 The junction 11 of the upper surface of the lower surface and the T-shaped slot of the oblique pin is pressed tightly, and simultaneously, the buckle surface of the head of the oblique pin and the contact surface 14 of the mold core are also tightly attached by force.

After adopting the utility model, during processing, every surface in contact with the oblique pin and the male mold core is tightened, and there will be no slight jump during processing due to the looseness of the oblique pin, and the processing caused by the looseness of the oblique pin is prevented. Abnormal, effectively guarantee the machining accuracy.

Claims (4)

1. An oblique pin fastening fixture, including a screw (3), is characterized in that it also includes a base (1), and the side wall at one end of the base is provided with two corresponding ones for clamping on the oblique pin. A groove (11) in the T-shaped groove at one end of the pin, an internal thread (12) is provided at the other end of the base, and the screw (3) is used in conjunction with the internal thread (12). 2. The oblique pin fastening fixture according to claim 1, characterized in that the distance H from the top wall of the groove (11) to the base end is consistent with the width of the transverse groove of the T-shaped groove at the tail of the oblique pin, and the The thickness K of the base body between the side walls of the two grooves is consistent with the longitudinal groove width of the T-shaped groove at the tail of the oblique pin. 3. The oblique pin fastening fixture according to claim 1, characterized in that, the base (1) is a cylindrical rod. 4. The clamp for fastening oblique pins according to claim 1, characterized in that, a spacer (2) is sheathed on the screw (3).

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