A clamping mechanism for ejecting a plastic molded product
By using a miniaturized slider design and a ring-shaped slider structure, the problems of large plastic mold size and high production cost are solved, achieving efficient production and low-cost mold use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN PMOLD TECH LTD
- Filing Date
- 2025-06-07
- Publication Date
- 2026-06-23
AI Technical Summary
Existing plastic mold locking mechanisms are bulky, leading to material waste and installation difficulties, and traditional slider demolding methods are inefficient.
It adopts a miniaturized slider design, which is fixed by a guide ring and pushed by a pressure plate to make the slider explode. Combined with six ring-shaped sliders and anti-slip protrusions, it ensures stability and easy installation.
This resulted in smaller mold size, lower production costs, improved production efficiency and mold lifespan, and simplified the installation process.
Smart Images

Figure CN224391656U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic molds, and in particular to a fastening mechanism for producing plastic mold products. Background Technology
[0002] A search of Chinese patents revealed publication number CN222360580U, entitled "A Molding Mold Clipping Mechanism," belonging to the field of plastic mold technology. This invention includes a rear module, with a rear mold core mounted on its upper center, and the rear mold core and rear module are fixed together by side positioning bolts. It also includes a fixed insert fixedly connected to the upper end of the rear module, located inside the rear mold core. A movable insert is installed between the fixed insert and the rear mold core, and an ejector pin component is provided at the lower end of the movable insert. The lower end of the ejector pin component is connected to a support spring and a bearing bolt, with the bearing bolt screwed into the interior of the rear module. A guide groove is provided in the middle of the bearing bolt. This molding mold clipping mechanism can eliminate the complexity and interference issues at the top of the product, allowing for smooth production. Furthermore, the same ejector pin can be reused, improving its service life.
[0003] Existing locking mechanisms are bulky. Currently, 360° external locking can only be demolded using sliders, resulting in excessively large molds, wasted materials, and complicated installation. To solve the above problems, we propose a locking mechanism for plastic mold products. Utility Model Content
[0004] The purpose of this invention is to provide a snap-fit mechanism for producing plastic molded products, which has the advantages of small size and low production cost.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a locking mechanism for producing plastic mold products, including a slider, a slot is provided on the surface of the slider, a first pressure plate is engaged with the inner wall of the slot, a second pressure plate and a third pressure plate are respectively fixedly connected to the surface of the first pressure plate by bolts, and a guide ring is slidably connected to the surface of the slider.
[0006] By adopting the above technical solution, the guide ring is fixed during mold opening, and the pressure plate pushes the slider to move towards the fixed slot, thereby achieving the effect of the slider exploding and allowing the product to be ejected smoothly. This method can achieve the goal of small size, improve product manufacturability, reduce material quantity and processing costs, simplify operation, increase mold life, and facilitate installation.
[0007] The present invention is further configured such that: the surface of the slider is integrally formed with a raised strip, and the raised strip is slidably connected to the inner wall of the guide ring.
[0008] By adopting the above technical solution, the slider is prevented from shifting and stability is improved by setting a raised strip.
[0009] The present invention is further configured such that the number of sliders is six, and the six sliders are arranged in a ring.
[0010] By adopting the above technical solution, the number of sliders is set to six, and the six sliders are arranged in a ring. The six sliders can be combined to form a circular cavity, which is convenient to use.
[0011] The present invention is further configured such that the inner wall of the slider is integrally formed with anti-slip protrusions.
[0012] By adopting the above technical solution, anti-slip protrusions are set to prevent the product from falling off and improve stability.
[0013] The present invention is further configured such that a fixing hole is formed on the surface of the guide ring.
[0014] The above technical solution facilitates installation and fixation by providing fixing holes.
[0015] The present invention is further configured such that: a positioning rod is slidably sleeved on the inner wall of the first pressure plate, and the positioning rod is slidably sleeved on the inner walls of the second pressure plate and the third pressure plate.
[0016] By adopting the above technical solution and setting positioning rods, the second and third pressure plates can be easily positioned, making installation convenient.
[0017] In summary, this utility model has the following beneficial effects:
[0018] This invention achieves the effect of the slider bursting open by fixing the guide ring during mold opening and pushing the slider towards the fixed slot with the pressure plate, thus allowing the product to be ejected smoothly. This method can achieve the goal of small size, improve product manufacturability, reduce material quantity and processing costs, is easy to operate, increases mold life, and is convenient to install. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural view of the present invention;
[0020] Figure 2 This is a three-dimensional structural view of the present invention;
[0021] Figure 3 This is a partial three-dimensional structural view of the present invention;
[0022] Figure 4 This is a schematic diagram of the mold opening and use of this utility model.
[0023] Reference numerals: 1. Slider; 2. Slot; 3. First pressure plate; 4. Second pressure plate; 5. Third pressure plate; 6. Guide ring; 7. Raised strip; 8. Anti-slip protrusion; 9. Fixing hole; 10. Positioning rod. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to the accompanying drawings.
[0025] Example:
[0026] refer to Figure 1 , Figure 2 and Figure 3 A locking mechanism for ejecting plastic mold products includes a slider 1. A groove 2 is formed on the surface of the slider 1. A first pressure plate 3 is engaged with the inner wall of the groove 2. A second pressure plate 4 and a third pressure plate 5 are fixedly connected to the surface of the first pressure plate 3 by bolts. A guide ring 6 is slidably connected to the surface of the slider 1. When the mold is opened, the guide ring 6 remains stationary, and the pressure plate pushes the slider 1 towards the fixed groove 2, thereby achieving the effect of the slider 1 exploding and allowing the product to be ejected smoothly. This method can achieve the purpose of small size, improve the manufacturability of the product, reduce the amount of material and processing costs, is easy to operate, increases the service life of the mold, and is convenient to install.
[0027] refer to Figure 1 , Figure 2 and Figure 3 The surface of the slider 1 is integrally formed with a raised strip 7, and the raised strip 7 is slidably connected to the inner wall of the guide ring 6. By setting the raised strip 7, the slider 1 is prevented from deviating and the stability is improved.
[0028] refer to Figure 1 , Figure 2 and Figure 3 There are six sliders 1, and the six sliders 1 are arranged in a ring. By setting the number of sliders 1 to six and the six sliders 1 to be arranged in a ring, the six sliders 1 can be combined into a circular cavity, which is convenient to use.
[0029] refer to Figure 1 , Figure 2 and Figure 3 The inner wall of the slider 1 is integrally formed with anti-slip protrusions 8. By setting the anti-slip protrusions 8, the product is prevented from falling off and the stability is improved.
[0030] refer to Figure 1 , Figure 2 and Figure 3 The guide ring 6 has a fixing hole 9 on its surface, which facilitates installation and fixing.
[0031] refer to Figure 3 The inner wall of the first pressure plate 3 is slidably sleeved with a positioning rod 10, and the positioning rod 10 is slidably sleeved with the inner walls of the second pressure plate 4 and the third pressure plate 5. By setting the positioning rod 10, it is easy to position the second pressure plate 4 and the third pressure plate 5, which facilitates installation.
[0032] Brief description of usage: (e.g.) Figure 4 The guide ring 6 is fixed to the mold mounting base, and the second pressure plate 4 is connected to the output end of the cylinder. The cylinder pushes the second pressure plate 4 to make the first pressure plate 3 drive the slider 1 to move, so that the slider 1 moves towards the guide block, thereby achieving the effect of the slider 1 exploding, so that the product can be ejected smoothly, achieving the purpose of small size. It optimizes the traditional slider 1 with 360° external undercut, reduces the size of the mold structure, optimizes its demolding structure, and reduces mold material.
[0033] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A locking mechanism for producing plastic molded products, comprising a slider (1), characterized in that, The surface of the slider (1) is provided with a slot (2), and the inner wall of the slot (2) is fitted with a first pressure plate (3). The surface of the first pressure plate (3) is fixedly connected with a second pressure plate (4) and a third pressure plate (5) by bolts. The surface of the slider (1) is slidably connected with a guide ring (6).
2. The locking mechanism for producing plastic molded products according to claim 1, characterized in that, The surface of the slider (1) is integrally formed with a raised strip (7), and the raised strip (7) is slidably connected to the inner wall of the guide ring (6).
3. The locking mechanism for producing plastic molded products according to claim 1, characterized in that, The number of sliders (1) is six, and the six sliders (1) are arranged in a ring.
4. The locking mechanism for producing plastic molded products according to claim 1, characterized in that, The inner wall of the slider (1) is integrally formed with anti-slip protrusions (8).
5. The locking mechanism for producing plastic molded products according to claim 1, characterized in that, The guide ring (6) has a fixing hole (9) on its surface.
6. The locking mechanism for producing plastic molded products according to claim 1, characterized in that, The inner wall of the first pressure plate (3) is slidably sleeved with a positioning rod (10), and the positioning rod (10) is slidably sleeved with the inner walls of the second pressure plate (4) and the third pressure plate (5).