Ejection positioning mechanism

Abstract

The utility model relates to the technical field of injection molds, in particular to an ejection positioning mechanism which comprises a male mold plate and a female mold plate, a male mold core is arranged in the male mold plate, and a female mold core is arranged in the female mold plate. An insert pin, a guide pin, a spring, a headless bolt and a sensor are arranged in the female template; the insert pin is connected with the female die core in a sliding manner, the guide pin is connected with one end of the insert pin, and the guide pin is sleeved with the spring; the spring is arranged between the guide needle and the headless bolt; the guide needle is in sliding connection with the headless bolt, threads are arranged on the periphery of the headless bolt, and the headless bolt adjusts the initial compression position of the spring through the threads; by arranging the headless bolt and the thread adjusting structure, the adaptability of the ejection mechanism can be improved by adjusting the position of the headless bolt, matching the current spring depth in time and flexibly adjusting the pre-tightening force of the spring, and the problem of insertion size change caused by metal scraps and the positioning error caused by insufficient or overlarge spring force are avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and specifically to an ejection positioning mechanism. Background Technology

[0002] In actual production, the dimensions of stamped hardware terminals fluctuate greatly. Therefore, the tolerance of hardware parts is generally larger than that of injection-molded products. When the height of the hardware parts is within the limit tolerance, the product dimensions will exceed the tolerance range. This is mainly because the terminals do not have a height positioning mechanism in the mold.

[0003] Existing molds often use slender inserts for limiting and positioning. However, due to the small cross-sectional size (usually 0.6mm×0.6mm) and long length (approximately 28.1mm) of traditional inserts, their rigidity is insufficient, making them prone to bending and deformation during mold closing and injection molding. Furthermore, during production, metal shavings are easily generated when the terminals and the terminal mating holes on the mold are inserted, causing blockage of the terminal holes on the mold. This blockage or insert deformation can lead to dimensional changes, thus affecting the yield. Utility Model Content

[0004] The technical objective of this invention is to design an ejection positioning mechanism to address the problem of low yield caused by pin deformation and mating hole blockage in existing technologies.

[0005] To achieve the above-mentioned technical objectives, this utility model provides the following technical solution:

[0006] An ejection positioning mechanism includes: a male template and a female template; the male template contains a male mold core, and the female template contains a female mold core.

[0007] The mother template is equipped with insert pins, guide pins, springs, headless bolts and sensors;

[0008] The insert pin is slidably connected to the female mold core, the guide pin is connected to one end of the insert pin, and the spring is sleeved on the guide pin;

[0009] A spring is positioned between the guide pin and the headless bolt to push the guide pin forward during mold opening;

[0010] The guide pin is slidably connected to the headless bolt, and the headless bolt has threads on its outer periphery. The headless bolt adjusts the initial compression position of the spring through the threads.

[0011] Furthermore, the cross-sectional dimensions of the insert are 0.63*0.63mm.

[0012] Furthermore, the length of the insert is 18.1 mm.

[0013] Furthermore, the guide pin passes through the insert through the headless bolt and is slidably connected to the headless bolt.

[0014] Furthermore, an adjustment hole is provided at the center of the headless bolt, and the inner diameter of the adjustment hole is larger than the through hole of the insert.

[0015] Furthermore, a sensor is provided inside the mother template, which is used to sense the position of the guide needle.

[0016] Furthermore, the sensor is installed at a position aligned with the guide pin's retraction limit position.

[0017] Furthermore, the guide pin moves coaxially with the insert pin, and the front end of the guide pin is provided with a sensing contact surface for position sensing cooperation with the sensor.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0019] This application, by setting a headless bolt and thread adjustment structure, allows for timely matching of the current spring depth by adjusting the position of the headless bolt, flexibly adjusting the spring preload, improving the adaptability of the ejection mechanism, and avoiding problems caused by changes in the insertion dimensions due to metal debris, as well as positioning errors caused by insufficient or excessive spring force. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] The above and other aspects of the present invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the overall structure of an ejection positioning mechanism provided by this utility model;

[0023] Figure 2 This is a structural diagram of a female mold for an ejection positioning mechanism provided by this utility model;

[0024] Figure 3 This is a cross-sectional view of a female mold for an ejection positioning mechanism provided by this utility model;

[0025] Figure 4 This utility model provides an interface diagram of a headless bolt.

[0026] In the picture:

[0027] 1. Male mold plate; 2. Male mold core; 3. Female mold plate; 4. Female mold core; 5. Insert pin; 6. Guide pin; 7. Spring; 8. Headless bolt; 9. Thread; 10. Insert through hole; 11. Adjustment hole; 12. Sensor; 13. Terminal. Detailed Implementation

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, an ejection positioning mechanism includes a male template 1 and a female template 3; the male template 1 has a male mold core 2, and the female template 3 has a female mold core 4; the female template 3 has a pin 5, a guide pin 6, a spring 7, a headless bolt 8, and a sensor 12; the pin 5 is slidably connected to the female mold core 4, the guide pin 6 is connected to one end of the pin 5, and the spring 7 is sleeved on the guide pin 6; the spring 7 is disposed between the guide pin 6 and the headless bolt 8, and is used to push the guide pin 6 forward when the mold is opened; the guide pin 6 is slidably connected to the headless bolt 8, and the outer periphery of the headless bolt 8 is provided with threads 9, and the headless bolt 8 adjusts the initial compression position of the spring 7 through the threads 9.

[0030] In this embodiment, by designing the size of the insert pin 5 to be 0.63*0.63mm and shortening the length from the original 28.1 to 18.1, the strength of the insert pin 5 is increased, which can match the spring 7 in the ejection mechanism.

[0031] like Figure 4 As shown, in this embodiment, the adjustment hole 11 at the axis of the headless bolt 8 is set as an internal hexagonal hole. When the position of the headless bolt 8 needs to be adjusted, it can be rotated through the internal hexagonal hole. Since the headless bolt 8 passes through the guide pin 6, and the insert through hole 10 is a round hole, the inner diameter of the internal hexagonal hole is larger than that of the insert through hole 10. The internal hexagonal hole does not pass through the headless bolt 8, so the rotation adjustment does not affect the passage of the guide pin 6. Therefore, the adjusted headless bolt 8 can adjust the change in the length of the hole caused by the blockage in real time, and adjust the position of the spring 7 at its limit to match the actual needs.

[0032] The actual working process is as follows: An external robotic arm inserts terminal 13 into the PIN hole of male template 1; male template 1 and female template 3 perform a mold closing action, during which the head of terminal 13 first contacts insert pin 5, pushing insert pin 5 to move inward toward the inside of female template 3; insert pin 5 moves backward along with guide pin 6, and when guide pin 6 moves to the sensing position of sensor 12, sensor 12 senses the sensing contact surface on the guide pin 6, and sensor 12 outputs a signal to control the stop of the mold closing action; after the terminal 13 is positioned, the injection molding process is started; after the injection molding is completed, male template 1 and female template 3 separate, spring 7 releases its elastic force, pushing guide pin 6 and insert pin 5 forward to reset, ejecting the product; male template 1 ejects the product through the ejection mechanism, completing one production cycle.

[0033] When debris blocks part of the hole, the actual insertion distance is extended. At this time, the headless bolt 8 is rotated through the internal hexagonal hole to reduce the distance from the headless bolt 8 to the product. In actual use, the position of the headless screw can be adjusted to match the injection molding of different types of terminals 13.

[0034] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

[0035] Although the present disclosure has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to the embodiments of the present disclosure, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present disclosure are within the scope of protection claimed by the present disclosure.

Claims

1. An ejection positioning mechanism, comprising a male template (1) and a female template (3); wherein the male template (1) is provided with a male mold core (2) and the female template (3) is provided with a female mold core (4), characterized in that: The mother template (3) is provided with a pin (5), a guide pin (6), a spring (7), a headless bolt (8) and a sensor (12); The insert pin (5) is slidably connected to the female mold core (4), the guide pin (6) is connected to one end of the insert pin (5), and the spring (7) is sleeved on the guide pin (6); A spring (7) is positioned between the guide pin (6) and the headless bolt (8) to push the guide pin (6) forward when the mold is opened; The guide pin (6) is slidably connected to the headless bolt (8), and the headless bolt (8) is provided with threads (9) on its outer periphery. The headless bolt (8) adjusts the initial compression position of the spring (7) through the threads (9).

2. The ejection positioning mechanism according to claim 1, characterized in that, The cross-sectional dimensions of the insert (5) are 0.63*0.63mm.

3. The ejection positioning mechanism according to claim 1, characterized in that, The length of the insert (5) is 18.1 mm.

4. The ejection positioning mechanism according to claim 1, characterized in that, The guide pin (6) passes through the insert through hole (10) through the headless bolt (8) and is slidably connected to the headless bolt (8).

5. The ejection positioning mechanism according to claim 4, characterized in that, An adjustment hole (11) is also provided at the axis of the headless bolt (8), and the inner diameter of the adjustment hole (11) is larger than the through hole (10) of the insert.

6. The ejection positioning mechanism according to claim 1, characterized in that, A sensor (12) is provided inside the mother template (3), and the sensor (12) is used to sense the position of the guide needle (6).

7. The ejection positioning mechanism according to claim 6, characterized in that, The sensor (12) is installed at the same position as the guide pin (6) at its maximum retraction position.

8. The ejection positioning mechanism according to claim 6, characterized in that, The guide pin (6) moves along the same axis as the insert pin (5), and the front end of the guide pin (6) is provided with a sensing contact surface for position sensing cooperation with the sensor (12).

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