Opposite-embracing sliding block structure with positioning ring insert

Abstract

The utility model relates to an opposite-embracing sliding block structure with a positioning ring insert. When a common opposite-embracing sliding block structure is closed, the segment difference at the parting position of the sliding block is difficult to reduce, so that the concentricity and the roundness of a mounting column are difficult to meet the requirements of customers. The structure comprises two sliding block seats which are symmetrically arranged, and is characterized in that sliding blocks are arranged at the inner ends of the sliding block seats, two opposite-holding sliding block inserts are arranged between the two sliding blocks, the tops of the opposite-holding sliding block inserts extend into a front mold core, a front mold insert pin is arranged in the center of the front mold core, and the front mold insert pin is arranged in the middle of the front mold core. And the lower end of the front mold insert pin is inserted into the holding slide block insert. According to the utility model, the section difference at the parting part of the holding slide block can be reduced, the concentricity and roundness of the mounting column are optimized, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to a sliding block structure with a positioning ring insert. Background Technology

[0002] like Figure 1 As shown, in a typical clamping slider structure, during mold closing, the two slider seats 14 move slowly forward under the force of the bent pin 15. As the slider seats 14 move, they simultaneously drive the slider 13 forward. After both sets of sliders reach their positions, the front mold core 10 and the front mold insert 11 gradually approach the slider 13 until they are fully engaged. During injection molding, the two clamping sliders 13 are only subjected to the squeezing force of the rear slider seat 14. After the sliders 13 are subjected to injection pressure, flash and step differences are easily generated at the parting line.

[0003] The main drawback of this structure is that the two sets of opposing sliders only have the squeezing force of the rear slider seat, and lack the clamping force of the front mold core at the top. In addition, due to the influence of processing errors and injection pressure, it is difficult to reduce the step difference at the slider parting point, making it difficult to meet the customer's requirements for the concentricity and roundness of the mounting pillars. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model proposes a counter-slider structure with a positioning ring insert, which can reduce the step difference at the parting point of the counter-slider, optimize the concentricity and roundness of the mounting column, and improve product quality.

[0005] Therefore, the technical solution adopted by this utility model is: a counter-slider structure with positioning ring insert, including two symmetrically arranged slider seats, characterized in that a slider is provided at the inner end of the slider seat, and a counter-slider insert is provided between the two sliders. There are two counter-slider inserts, the top of the counter-slider inserts extends into the front mold core, the front mold core is provided with a front mold insert pin at the center, and the lower end of the front mold insert pin is inserted into the counter-slider insert.

[0006] Preferably, the top of the opposing slider insert rests against the front mold core on both the upper and side surfaces.

[0007] Preferably, the interior of the two opposing slider inserts forms an upper and lower annular cavity, with the lower annular cavity enclosing the product and the upper annular cavity enclosing the front mold insert.

[0008] Preferably, the sliding block insert is mounted on the sliding block from the outside by fastening screws.

[0009] Preferably, the front mold core has a stepped groove on its upper part that matches the upper end of the front mold insert.

[0010] Preferably, the slider seat is connected to a bent pin, which drives the slider seat to move to both sides.

[0011] This invention adds a sliding block insert to the sliding block, and the sliding block insert extends into the front mold core.

[0012] The clamping force of the front mold core slider insert is increased at the top, reducing the step difference at the slider parting point, effectively improving the concentricity and roundness requirements of the mounting pillars, and improving product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the existing technology;

[0014] Figure 2 This is a three-dimensional sectional view of the present invention;

[0015] Figure 3 This is a schematic diagram of the present invention with the front mold insert pin omitted;

[0016] In the attached diagram: 10—front mold core; 11—front mold insert; 12—slider insert; 13—slider; 14—slider

[0017] 15—Bent pin; 16—Product; 17—Lower annular cavity; 18—Upper annular cavity; 19—Step groove; 20—Fastening screw. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 2-3 The shown counter-slider structure with positioning ring insert includes two symmetrically arranged slider seats 14. A slider 13 is provided at the inner end of the slider seat 14. A counter-slider insert 12 is provided between the two sliders 13. There are two counter-slider inserts. The top of the counter-slider insert extends into the front mold core 10. A front mold insert pin 11 is provided at the center of the front mold core 10. The lower end of the front mold insert pin 11 is inserted into the counter-slider insert 12.

[0020] This invention improves the structure of the front mold core and the slider by adding a counter-slider insert with a positioning ring structure inside the slider. The lower main body structure of the counter-slider insert fits into the product shell. The upper main body structure extends directly into the cavity reserved in the front mold core, and the top of the counter-slider insert 12 abuts against the front mold core 10 on its upper end face and side face.

[0021] Specifically, the interior of the two opposing sliding block inserts forms two-level annular cavities 17. The lower annular cavity 17 encloses the product 16, and the upper annular cavity 18 encloses the front mold insert 11. The front mold insert is directly inserted into the center tube opening of the product.

[0022] Specifically, the opposing slider insert is mounted on the slider from the outside by fastening screws 20. This makes the opposing slider insert and the slider form a single unit for performing the action.

[0023] Specifically, the front mold core 10 has a stepped groove 19 on its upper part that matches the upper end of the front mold insert. This structure allows the front mold insert to be installed by matching it with the front mold core.

[0024] Specifically, a bent pin 15 is connected to the slider seat 14, and the bent pin drives the slider seat to move to both sides.

[0025] The working process of this utility model is as follows: During mold closing, the two slider seats 14 move slowly forward under the force of the bent pin 15. As the slider seats 14 move, they simultaneously drive the slider 13 and slider insert 12 forward. After the two sets of sliders reach their positions, the front mold core 10 and the front mold insert 11 gradually approach the slider 13 and slider insert 12 until they are fully engaged. During injection molding, the two pairs of slider inserts 12 are simultaneously subjected to the squeezing force of the rear slider seat 14 and the clamping force of the top front mold core on the two slider inserts 12. Therefore, the injection pressure has little effect on the sliders, effectively reducing the parting line difference. By reducing the parting line difference, the concentricity and roundness requirements of the mounting pillars are effectively improved.

[0026] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A structure of embracing sliding block with positioning ring insert, comprising two symmetrically arranged sliding block seats (14), characterized in that The inner end of the slider seat (14) is provided with a slider (13), and a pair of opposing slider inserts (12) are provided between the two sliders (13). There are two opposing slider inserts. The top of the opposing slider inserts extends into the front mold core (10). The front mold core (10) is provided with a front mold insert pin (11) at the center. The lower end of the front mold insert pin (11) is inserted into the opposing slider insert (12).

2. The structure of claim 1, wherein The top of the opposing slider insert (12) abuts against the front mold core (10) on the upper end face and side face.

3. The opposing slider structure with positioning ring insert according to claim 1 or 2, characterized in that... The interior of the two opposing sliding block inserts forms an upper and lower annular cavity (17). The lower annular cavity (17) encloses the product (16), and the upper annular cavity (18) encloses the front mold insert (11).

4. The opposing slider structure with positioning ring insert according to claim 1, characterized in that... The aforementioned opposing slider insert is mounted on the slider on the outside by fastening screws (20).

5. The opposing slider structure with positioning ring insert according to claim 1, characterized in that... The front mold core (10) has a stepped groove (19) formed on the upper part to match the upper end of the front mold insert.

6. The opposing slider structure with positioning ring insert according to claim 1, characterized in that... A bent pin (15) is connected to the slider seat (14), and the bent pin drives the slider seat to move to both sides.

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