Embedded injection molding limiting device

Abstract

The utility model discloses an embedding injection molding limiting device which comprises a hardware terminal and a mold insert, the mold insert is provided with a limiting block, the limiting block is provided with a limiting groove, the limiting groove is used for accommodating the terminal tail part of the hardware terminal, the inner side of the limiting groove is provided with an interference arc part, and the limiting groove is provided with a limiting groove. And the interference arc part is in interference fit with the outer side of the terminal tail part to limit the terminal tail part to move up and down. According to the embedded injection molding limiting device provided by the utility model, the hardware terminal can be limited to move up and down in the mold insert, the phenomenon of high and low PIN is avoided, and the stable size and low reject ratio during production are ensured.

Description

Technical Field

[0001] The utility model relates to an embedded injection molding limiting device, belonging to the technical field of mold injection molding. Background Art

[0002] During automated production, the finished product is made of hardware terminals installed in mold inserts. There is a clearance fit between the hardware terminals and the mold inserts. The hardware terminals are placed in the mold parts with a clearance fit in the left and right directions. The upper and lower directions are infinitely movable directions. The high and low PINs and the terminals are not easy to detect, which will lead to large dimensional variations and high dimensional instability and defective rates during production. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an embedded injection molding limiting device, which can limit the up and down movement of the hardware terminal in the mold insert, avoid the high and low PIN phenomenon, and ensure the dimensional stability and low defect rate during production.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] An embedded injection molding limiting device comprises a hardware terminal and a mold insert, wherein a limiting block is arranged on the mold insert, and a limiting groove is provided on the limiting block. The limiting groove is used to accommodate the terminal tail of the hardware terminal, and an interference arc portion is arranged on the inner side of the limiting groove. The interference arc portion and the outer side of the terminal tail are interference-fitted to limit the upward and downward movement of the terminal tail.

[0006] The number of the limiting grooves and the terminal tails is three.

[0007] The interference arc portion and the limiting groove are integrally formed.

[0008] There are two interference arc portions, which are located on both sides of the terminal tail.

[0009] The interference amount of the interference arc portion is 0.04-0.06 mm.

[0010] The interference amount of the interference arc portion is 0.05 mm.

[0011] Beneficial effects of the utility model: the utility model provides an embedded injection molding limit device, the inner side of the limit groove is provided with an interference arc portion, the interference arc portion and the outer side of the terminal tail are interfered with to limit the up and down movement of the terminal tail, and a downward retaining force is provided to the terminal tail through the interference arc portion, which can avoid the high and low PIN phenomenon and ensure the dimensional stability and low defective rate during production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of an embedded injection molding limiting device of the utility model;

[0013] Figure 2 This is a schematic diagram of the front structure of an embedded injection molding limiting device of the utility model;

[0014] Figure 3 for Figure 2 The middle part is an enlarged structural diagram.

[0015] The reference numerals in the figure are as follows: 1-hardware terminal; 2-mold insert; 11-limiting block; 21-limiting block; 211-limiting groove; 212-interference arc portion. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the protection scope of the present invention.

[0017] like Figure 1 and Figure 2 As shown, the utility model provides an embedded injection molding limiting device, including a hardware terminal 1 and a mold insert 2, a limiting block 21 is provided on the mold insert 2, a limiting groove 211 is provided on the limiting block 21, and the limiting groove 211 is used to accommodate the terminal tail 11 of the hardware terminal 1. The number of the limiting groove 211 and the terminal tail 11 is three. This part is a conventional structure of an embedded injection molding limiting device in the prior art. Under this structure, the terminal tail 11 is limited only in the left and right directions, but not in the up and down directions. The uneven height of the terminal is not easy to detect, which will lead to large dimensional variation and high dimensional instability and defective rate during production.

[0018] like Figure 3 As shown, the innovation of the utility model is that an interference arc portion 212 is provided inside the limit groove 211, and the interference arc portion 212 is integrally formed with the limit groove 211. There are two interference arc portions 212, which are located on both sides of the terminal tail 11. The interference arc portion 212 and the outer side of the terminal tail 11 are interference-fitted to limit the upward and downward movement of the terminal tail 11. By setting the interference arc portion 212, a downward holding force can be provided to the terminal tail 11, so that the terminal tail 11 will not move up and down, avoiding the high and low PIN phenomenon, and ensuring the dimensional stability and low defect rate during production.

[0019] In the present invention, the interference amount of the interference arc portion 212 is 0.04-0.06 mm. In the present embodiment, the interference amount of the interference arc portion 212 is preferably 0.05 mm. Under this parameter condition, it can be well fitted with the side piece of the terminal tail 11. In addition, under this parameter condition, it can also ensure the appropriate plugging and pulling force of the hardware terminal 1, that is, it is convenient to take out the hardware terminal 1, and it is not easy for the hardware terminal 1 to move up and down.

[0020] The utility model provides an embedded injection molding limiting device, wherein an interference arc portion is arranged on the inner side of a limiting groove, and the interference arc portion and the outer side of a terminal tail portion are interference-fitted to limit the upward and downward movement of the terminal tail portion, and a downward holding force is provided to the terminal tail portion through the interference arc portion, thereby avoiding the occurrence of high and low PIN phenomena and ensuring dimensional stability and low defective rate during production.

[0021] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An embedded injection molding limiting device, characterized in that: The invention comprises a hardware terminal (1) and a mold insert (2), wherein a limit block (21) is arranged on the mold insert (2), a limit groove (211) is provided on the limit block (21), the limit groove (211) is used to accommodate a terminal tail (11) of the hardware terminal (1), an interference arc portion (212) is arranged on the inner side of the limit groove (211), and the interference arc portion (212) is interference-fitted with the outer side of the terminal tail (11) to limit the upward and downward movement of the terminal tail (11).

2. The embedded injection molding limiting device according to claim 1, characterized in that: The number of the limiting grooves (211) and the terminal tails (11) is three.

3. The embedded injection molding limiting device according to claim 1, characterized in that: The interference arc portion (212) and the limiting groove (211) are integrally formed.

4. The embedded injection molding limiting device according to claim 1, characterized in that: There are two interference arc portions (212) located on both sides of the terminal tail portion (11).

5. The embedded injection molding limiting device according to claim 1, characterized in that: The interference amount of the interference arc portion (212) is 0.04-0.06 mm.

6. The embedded injection molding limiting device according to claim 5, characterized in that: The interference amount of the interference arc portion (212) is 0.05 mm.

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