Pin guiding and glue sealing structure

Abstract

A contact pin guiding and glue sealing structure effectively solves the problems that burrs are generated and plating layers on the surfaces of contact pins are prone to being scratched, and comprises a mold core, the upper surface of the mold core is a parting surface, the mold core is provided with a plurality of stations, pins are placed on the stations, the contact pins are fixed to the left ends and the right ends of the pins, inserts corresponding to the pins are installed in the stations, and glue sealing positions and convex hulls are arranged on the inserts. The convex hull is 1mm higher than the parting surface, the gap between the convex hull and the contact pin is 0.02-0.03 mm, the opening part of the convex hull is provided with a 45-degree guide angle, and the gap between the glue sealing position and the contact pin is 0.02-0.03 mm.

Description

Technical Field

[0001] This utility model belongs to the field of sealing mold technology, and in particular relates to a pin-guided sealing structure. Background Technology

[0002] Insert molding is frequently used in automotive parts to mold pins and plastic together. One example is the motor connector used in an ECU control box, where the pins are injection molded before being inserted into the ECU for assembly. This structure has the following problems: 1. The pins and mold require sealing; if the gap is too large, glue leakage and burrs may occur. 2. If the gap is too small, it is difficult to insert the pins into the mold, easily scratching the pin's surface plating. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a pin guide sealing structure, which effectively solves the problems of burrs and easy scratching of the pin surface plating.

[0004] The technical solution to the technical problem is as follows: it includes a mold core, the upper surface of which is a parting surface. The mold core has multiple stations, pins are placed on the stations, and pins are fixed at both ends of the pins. Inserts corresponding to the pins are installed in the stations. The inserts have sealing positions and protrusions. The protrusions are 1mm higher than the parting surface. The gap between the protrusions and the pins is 0.02-0.03mm. The opening of the protrusions has a 45° guide angle. The gap between the sealing positions and the pins is 0.02-0.03mm.

[0005] Preferably, the insert has a clearance space.

[0006] This invention has the following advantages over traditional equipment: 1) The pin needs to be sealed with glue when it mates with the mold. The gap between the pin and the mold is 0.02-0.03mm, which ensures no glue leakage, no burrs, and safety and reliability; 2) The use of a convex bulge and guide angle structure can prevent the sealing position from contacting the pin too early. The pin enters the convex bulge first and then gradually enters the sealing position, avoiding scratches on the pin. The guide angle can improve installation efficiency, allowing the pin to be installed smoothly and quickly into the insert, effectively improving pin scratches and increasing production efficiency. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model;

[0008] Figure 2 This is a schematic diagram of the three-dimensional structure of the pin and the insert in this utility model;

[0009] Figure 3This is a schematic diagram of the three-dimensional structure of the pin in this utility model;

[0010] Figure 4 This is a schematic diagram of the three-dimensional structure of the insert in this utility model.

[0011] Reference numerals: 1. Mold core; 2. Station; 3. Pin; 4. Insert pin; 5. Insert; 6. Sealing position; 7. Protrusion; 8. Guide angle; 9. Clearance position. Detailed Implementation

[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0013] Depend on Figures 1 to 4 A pin-guided sealing structure is provided, comprising a mold core 1, the upper surface of which is a parting surface, multiple stations 2 on the mold core 1, pins 3 placed on the stations 2, pins 4 fixed at both ends of the pins 3, inserts 5 corresponding to the pins 4 installed in the stations 2, the inserts 5 having sealing positions 6 and protrusions 7, the protrusions 7 being 1mm higher than the parting surface, the gap between the protrusions 7 and the pins 4 being 0.02-0.03mm, the opening of the protrusions 7 having a 45° guide angle 8, and the gap between the sealing positions 6 and the pins 4 being 0.02-0.03mm.

[0014] The insert 5 is provided with a clearance 9.

[0015] When this utility model is in use, when the pin 3 insert is placed into the mold core 1, the pin 4 of the pin 3 first contacts the 45° guide angle 8 at the opening of the protrusion 7, making it easy for the pin 4 to be inserted. Due to the presence of the protrusion 7, the sealing position 6, which is at a lower position, has not yet contacted the pin 4. The pin 4 continues to move downwards and enters the gap between the protrusion 7 and the pin 4 through the 45° guide angle 8. The 45° guide angle 8 can improve the installation efficiency, allowing the pin 4 to be smoothly and quickly installed into the insert 5. The gap between the protrusion 7 and the pin 4 is 0.02-0.03mm, and the gap between the sealing position 6 and the pin 4 is 0.02-0.03mm, ensuring effective sealing and preventing glue leakage, thereby avoiding burrs. With the gaps being the same, the pin 4 can smoothly and gradually enter the sealing position 6 without scratching the coating. At this time, except for the sealing position 6 and the guide position of the protrusion 7, the others are clearance positions 9, minimizing scratches on the coating.

[0016] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A pin guide encapsulation structure, characterized in that, The mold core (1) has a parting surface on its upper surface. The mold core (1) has multiple work stations (2). Pins (3) are placed on the work stations (2). Pins (4) are fixed at both ends of the pins (3). Inserts (5) corresponding to the pins (4) are installed in the work stations (2). The inserts (5) have a sealing position (6) and a protrusion (7). The protrusion (7) is 1 mm higher than the parting surface. The gap between the protrusion (7) and the pins (4) is 0.02-0.03 mm. The opening of the protrusion (7) has a 45° guide angle (8). The gap between the sealing position (6) and the pins (4) is 0.02-0.03 mm.

2. The pin guiding encapsulation structure according to claim 1, wherein, The insert (5) is provided with a clearance (9).

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