Mold for pulling core through sliding block in core
By using an internal slider core-pulling mold, and utilizing a hydraulic cylinder to drive the internal slider in conjunction with a T-block, the problem of long core-pulling distance inside the product and insufficient stroke of conventional inclined ejector core-pulling is solved, achieving fast and convenient demolding and improving production efficiency.
Patent Information
- Application Number
- CN202520040416.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-08
AI Technical Summary
When existing molds require core pulling inside the product over a long distance, the conventional angled ejector core pulling stroke is insufficient, leading to demolding difficulties and reduced production efficiency.
The core-pulling mold with an inner slider is used. The inner slider and T-block are driven by a hydraulic cylinder to adjust the position of the inner slider and ensure smooth demolding.
It improved the production efficiency of molds and enabled quick and convenient demolding of products.
Smart Images

Figure CN223644179U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, specifically a mold for core pulling by a slider inside the core. Background Technology
[0002] Molds are various shapes and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. Core-pulling molds with internal sliders are widely used in the manufacture of various products requiring internal core pulling, such as plastic products, rubber products, and metal products. They play an irreplaceable role, especially in industries such as automobiles, electronics, and medical devices.
[0003] When using existing molds, the product usually requires core pulling, and the distance is relatively long. The conventional practice is to use a slanted ejector for core pulling, but the stroke is insufficient to achieve smooth demolding, thus reducing the production efficiency of the mold.
[0004] Therefore, we urgently need to provide a mold for core pulling using a slider inside the core. Utility Model Content
[0005] The purpose of this utility model is to provide a mold for core pulling by a slider inside the core, in order to solve the problem mentioned in the background art that the internal part of the product usually needs to be pulled out, and the distance is relatively long. The conventional method is to pull the core by an inclined ejector, but the stroke is not enough to achieve smooth demolding, thereby reducing the production efficiency of the mold.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a mold for core pulling by a slider inside the core, comprising an upper fixed plate, a stripping plate at the bottom of the upper fixed plate, the top of the stripping plate being connected to the bottom of the upper fixed plate, an upper template at the bottom of the stripping plate, the top of the upper template being connected to the bottom of the stripping plate, and a lower fixed plate at the bottom of the upper template, the top of the lower fixed plate being in extrusive contact with the bottom of the upper template.
[0007] A further improvement is that the upper fixing plate has a material injection port at its top, and the lower fixing plate has a hydraulic cylinder at its top. One end of the hydraulic cylinder is connected to the top of the lower fixing plate. There are two hydraulic cylinders, which are symmetrically distributed on both sides of the lower fixing plate.
[0008] A further improvement is that an inner slider is provided at one end of the oil cylinder, and one side of the inner slider is connected to one end of the oil cylinder. There are two inner sliders, which are symmetrically distributed at one end of the two oil cylinders.
[0009] A further improvement is that a lower template is provided on the top of the lower fixing plate, the bottom of the lower template is connected to the top of the lower fixing plate, a core is provided on the top of the lower template, the bottom of the core is connected to the top of the lower template, and a second core is provided on the top of the lower template, the bottom of the second core is connected to the top of the lower template.
[0010] A further improvement is that there are two of each of the first and second cores, which are symmetrically distributed on the top of the lower template. The product is placed on the top of the first core, and a T-shaped block is provided on one side of the lower template. One side of the T-shaped block is slidably connected to one side of the lower template.
[0011] A further improvement is that a locking block is provided on one side of the T-block, and the locking block is connected to the T-block. A positioning block is provided on one side of the T-block, and the positioning block slides along the T-block. A positioning rod is provided on the inner wall of the lower template, and there are four positioning rods symmetrically distributed on the inner wall of the lower template, which enables better core pulling and thus better usability.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This mold for core pulling with an inner slider, through the installation of an upper fixed plate, stripping plate, upper template, lower fixed plate, injection port, hydraulic cylinder, inner slider, lower template, core one, product, core two, T-block, locking block, positioning block, and positioning rod, enables quick and convenient adjustment of the position of the inner slider, thereby facilitating better demolding. It solves the problem that when core pulling is required inside the product and the distance is long, the conventional method of using a slanted ejector core pulling method is insufficient in stroke, making it impossible to achieve smooth demolding, thus improving the production efficiency of the mold. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the positioning block structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the locking block structure of this utility model.
[0017] In the diagram: 1. Upper fixing plate; 2. Stripping plate; 3. Upper template; 4. Lower fixing plate; 5. Injection port; 6. Hydraulic cylinder; 7. Inner slider; 8. Lower template; 9. Core 1; 10. Product; 11. Core 2; 12. T-block; 13. Locking block; 14. Positioning block; 15. Positioning rod. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figures 1-3 This utility model provides a technical solution:
[0020] A core-pulling mold for a slider inside the core includes an upper fixed plate 1, a stripping plate 2 is provided at the bottom of the upper fixed plate 1, the top of the stripping plate 2 is connected to the bottom of the upper fixed plate 1, an upper template 3 is provided at the bottom of the stripping plate 2, the top of the upper template 3 is connected to the bottom of the stripping plate 2, and a lower fixed plate 4 is provided at the bottom of the upper template 3, the top of the lower fixed plate 4 is in extrusion contact with the bottom of the upper template 3.
[0021] The top of the upper fixed plate 1 is provided with a material inlet 5, and the top of the lower fixed plate 4 is provided with a hydraulic cylinder 6. One end of the hydraulic cylinder 6 is connected to the top of the lower fixed plate 4. There are two hydraulic cylinders 6, which are symmetrically distributed on both sides of the lower fixed plate 4.
[0022] One end of the hydraulic cylinder 6 is provided with an inner slider 7. One side of the inner slider 7 is connected to one end of the hydraulic cylinder 6. There are two inner sliders 7, which are symmetrically distributed at one end of the two hydraulic cylinders 6.
[0023] The bottom of the lower fixed plate 4 is provided with a lower template 8, the bottom of the lower template 8 is connected to the top of the lower fixed plate 4, the top of the lower template 8 is provided with a core 9, the bottom of the core 9 is connected to the top of the lower template 8, and the top of the lower template 8 is provided with a core 11, the bottom of the core 11 is connected to the top of the lower template 8.
[0024] There are two cores 19 and two cores 21. Cores 19 and 211 are symmetrically distributed on the top of the lower template 8. The product 10 is set on the top of core 19. A T-shaped block 12 is set on one side of the lower template 8. One side of the T-shaped block 12 is slidably connected to one side of the lower template 8.
[0025] A locking block 13 is provided on one side of the T-block 12, and the locking block 13 is connected to the T-block 12. A positioning block 14 is provided on one side of the T-block 12, and the positioning block 14 slides with the T-block 12. A positioning rod 15 is provided on the inner wall of the lower template 8. There are four positioning rods 15, which are symmetrically distributed on the inner wall of the lower template 8, so as to better perform the core pulling work and thus better use.
[0026] When needed, the operator performs injection molding through the injection port 5. When core removal is required, the hydraulic cylinder 6 is activated to move the inner slider 7. The movement of the inner slider 7 moves the T-block 12, allowing the T-block 12 to slide inside the positioning block 14. The sliding of the T-block 12 moves the locking block 13, allowing the T-block 12 to be pulled outwards, thus enabling the product 10 to be removed for better use.
[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A mold for core pulling by a slider inside the core, comprising an upper fixing plate (1), characterized in that: The bottom of the upper fixing plate (1) is provided with a stripping plate (2), the top of the stripping plate (2) is connected to the bottom of the upper fixing plate (1), the bottom of the stripping plate (2) is provided with an upper template (3), the top of the upper template (3) is connected to the bottom of the stripping plate (2), the bottom of the upper template (3) is provided with a lower fixing plate (4), the top of the lower fixing plate (4) is pressed against the bottom of the upper template (3).
2. The mold for core pulling by a slider inside the core according to claim 1, characterized in that: The upper fixing plate (1) has a filling port (5) at the top, and the lower fixing plate (4) has a hydraulic cylinder (6) at the top. One end of the hydraulic cylinder (6) is connected to the top of the lower fixing plate (4). There are two hydraulic cylinders (6), which are symmetrically distributed on both sides of the lower fixing plate (4).
3. The mold for core pulling by a slider inside the core according to claim 2, characterized in that: One end of the oil cylinder (6) is provided with an inner slider (7), one side of the inner slider (7) is connected to one end of the oil cylinder (6), and there are two inner sliders (7), which are symmetrically distributed at one end of the two oil cylinders (6).
4. The mold for core pulling by a slider inside the core according to claim 1, characterized in that: The lower fixing plate (4) is provided with a lower template (8) at the top. The bottom of the lower template (8) is connected to the top of the lower fixing plate (4). The lower template (8) is provided with a core one (9) at the top. The bottom of the core one (9) is connected to the top of the lower template (8). The lower template (8) is provided with a core two (11) at the top. The bottom of the core two (11) is connected to the top of the lower template (8).
5. A mold for core pulling using an internal slider according to claim 4, characterized in that: The number of core one (9) and core two (11) are two in total. Core one (9) and core two (11) are symmetrically distributed on the top of the lower template (8). The product (10) is set on the top of core one (9). A T-shaped block (12) is set on one side of the lower template (8). One side of the T-shaped block (12) is slidably connected to one side of the lower template (8).
6. The mold for core pulling by a slider inside the core according to claim 5, characterized in that: A locking block (13) is provided on one side of the T-shaped block (12), and one side of the locking block (13) is connected to one side of the T-shaped block (12). A positioning block (14) is provided on one side of the T-shaped block (12), and one side of the positioning block (14) slides with one side of the T-shaped block (12). A positioning rod (15) is provided on the inner wall of the lower template (8). There are four positioning rods (15), and the positioning rods (15) are symmetrically distributed on the inner wall of the lower template (8).