Center positioning type injection mold

Abstract

The utility model discloses a center positioning type injection mold, which relates to the technical field of injection molds, and comprises an injection molding bottom mold, an upper mold mechanism is inserted into the upper end of the injection molding bottom mold, an upper pressing block is sleeved on the upper mold mechanism, a built-in replacement core is embedded in the injection molding bottom mold, and a lower pressing block is sleeved on the built-in replacement core. The injection mold solves the problems that an existing injection mold product is poor in adaptability, and meanwhile accurate positioning of the center is difficult to achieve due to vertical coincidence of the mold, the built-in replacement core is arranged in the injection molding bottom mold in an embedded mode, and an opening in the built-in replacement core is variable in shape, easy to replace and high in adaptability. The injection molding bottom mold is extruded and adjusted through the upper mold mechanism, the upper pressing block and the upper mold mechanism can be aligned with the built-in replacement core to be inserted into the fixing block from the upper end to be placed, the upper plate can be pressed downwards, the clamping assembly is driven to slide towards the center along the side rails through attachment between the triangular lifting block and the clamping assembly, the two sides of the built-in replacement core are extruded, and center positioning is completed.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically a center-positioning injection mold. Background Technology

[0002] Injection molds are key components in the injection molding process, used to produce various plastic products. Injection molding is a high-volume manufacturing technology with high production efficiency and relatively low cost. Injection molds typically consist of two parts: a fixed mold and a moving mold. The fixed mold is fixed to the fixed plate of the injection molding machine, while the moving mold is connected to the moving plate of the injection molding machine.

[0003] Modern injection molds typically only allow for the injection of one type of product, resulting in poor product adaptability. Furthermore, the difficulty in achieving precise centering of the mold due to the overlapping of the upper and lower parts leads to errors. Precise centering ensures that each injection molded product maintains consistent dimensions and shape, meeting product quality requirements, while also reducing mechanical wear between the mold and the injection molding machine.

[0004] To address the aforementioned issues, a center-positioning injection mold is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a center-positioning injection mold, which solves the problems of poor product adaptability of current injection molds and the difficulty in achieving precise center positioning when the upper and lower parts of the mold overlap.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a center-positioning injection mold, including an injection bottom mold, an upper mold mechanism inserted into the upper end of the injection bottom mold, an upper pressure block sleeved on the upper mold mechanism, a built-in replacement core embedded inside the injection bottom mold, the injection bottom mold including a fixing block, side rails fixedly provided on both sides of the fixing block, a locking component slidably engaged within the side rails, the locking component elastically embedded within the fixing block, the built-in replacement core including a lower core and an upper core for vertical positioning and embedding, a transverse positioning block fixed inside the fixing block, the lower core slidably engaging with the transverse positioning block, the upper mold mechanism including an upper plate at the upper end, triangular lifting blocks corresponding to the locking components on both sides of the upper plate, insertion rods fixedly provided at the four corners of the upper plate, and the upper pressure block penetrating through the insertion rods.

[0007] Preferably, the injection molding bottom mold further includes side frames disposed on both sides of the lower end of the fixed block, and a lower spring disposed at the center of the lower end of the fixed block, with a base plate fixedly connected to the lower ends of the side frames and the lower spring.

[0008] Preferably, the fixing block has limiting grooves on both sides corresponding to the engaging components, and the fixing block has an internal slot in the center.

[0009] Preferably, the engaging assembly includes a transverse spring elastically disposed in a limiting groove, a limiting block connected to one side of the transverse spring, a triangular slider connected to the upper end of the limiting block for sliding engagement with the side rail, and a washer embedded on one side of the triangular slider.

[0010] Preferably, the lower end of the lower core is provided with a slot aligned with the transverse positioning block, and the two sides of the lower core are provided with embedding slots aligned with the upper core.

[0011] Preferably, the upper core has insert blocks connected to the insert slots on both sides.

[0012] Preferably, the upper mold mechanism further includes an injection molding insert fixedly disposed at the center of the upper plate, and the lower end of the injection molding insert is inserted into the upper pressure block.

[0013] Preferably, the lower end of the upper plate is fixedly provided with multiple sets of compression springs.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The present invention provides a center-positioning injection mold, which uses a built-in replacement core embedded in the injection bottom mold. The lower core and the upper core are embedded in each other to achieve overlap. The opening shape inside the built-in replacement core is variable, easy to replace, and highly adaptable, thus solving the problem of poor product adaptability of current injection molds.

[0016] 2. This utility model provides a center-positioning injection mold. By pressing and adjusting the injection bottom mold through the upper mold mechanism, the lower core is aligned with the horizontal positioning block and embedded to achieve center positioning of the front and rear ends. The upper pressure block and the upper mold mechanism can be removed as a whole. After the built-in replacement core is placed, the upper pressure block and the upper mold mechanism can be aligned with the built-in replacement core and inserted into the fixing block from the top. The upper plate can be pressed down. Through the contact between the triangular lifting block and the locking component, the locking component is driven to slide along the side rail towards the center, pressing the two sides of the built-in replacement core to complete the center positioning. This solves the problem that the current injection molds are difficult to accurately position due to the overlap of the upper and lower parts. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall combined structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the disassembled structure of the injection molding base mold and the built-in replacement core of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the upper pressure block and the upper mold mechanism of this utility model. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the structure of the upper pressure block and the upper mold mechanism of this utility model. Figure 2 ;

[0022] Figure 6 This is a schematic diagram of the overall structure of this utility model.

[0023] In the diagram: 1. Injection mold bottom mold; 11. Base plate; 12. Side frame; 13. Lower spring; 14. Fixing block; 141. Limiting groove; 142. Built-in slot; 143. Lateral positioning block; 15. Side rail; 16. Engaging assembly; 161. Lateral spring; 162. Limiting block; 163. Triangular slider; 164. Shim; 2. Upper pressure block; 3. Upper mold mechanism; 31. Upper plate; 311. Triangular lifting block; 32. Injection insert; 33. Pressure spring; 34. Insert rod; 4. Built-in replacement core; 41. Lower core; 411. Slot; 412. Embedding groove; 42. Upper core; 421. Embedding block. Detailed Implementation

[0024] 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.

[0025] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0026] Combination Figure 1 This utility model discloses a center-positioning injection mold, including an injection base mold 1, an upper mold mechanism 3 inserted into the upper end of the injection base mold 1, an upper pressure block 2 sleeved on the upper mold mechanism 3, an internal replacement core 4 embedded inside the injection base mold 1, the injection base mold 1 includes a fixing block 14, side rails 15 fixedly arranged on both sides of the fixing block 14, a locking component 16 slidably engaged inside the side rails 15, the locking component 16 elastically embedded inside the fixing block 14, the internal replacement core 4 includes a lower core 41 and an upper core 42 embedded in the upper and lower positioning, a transverse positioning block 143 fixed inside the fixing block 14, the lower core 41 slidably engaged with the transverse positioning block 143, the upper mold mechanism 3 includes an upper plate 31 arranged at the upper end, triangular lifting blocks 311 corresponding to the locking component 16 arranged on both sides of the upper plate 31, and insertion rods 34 fixedly arranged at the four corners of the upper plate 31, with the upper pressure block 2 passing through the insertion rods 34.

[0027] Specifically, the fixing block 14 is set at the lower end, and the lower core 41 and the upper core 42 are embedded in each other to achieve overlap. The opening shape inside the built-in replacement core 4 is variable, easy to replace, and highly adaptable. The lower core 41 is aligned with the transverse positioning block 143 to achieve center positioning of the front and rear ends. The upper pressure block 2 and the upper mold mechanism 3 can be removed as a whole. After the built-in replacement core 4 is placed, the upper pressure block 2 and the upper mold mechanism 3 can be aligned with the built-in replacement core 4 and inserted into the fixing block 14 from the upper end. The upper plate 31 can be pressed down. Through the contact between the triangular lifting block 311 and the locking assembly 16, the locking assembly 16 is driven to slide along the side rail 15 towards the center, squeezing the two sides of the built-in replacement core 4 to complete the center positioning.

[0028] The present invention will be further described below with reference to the embodiments.

[0029] Example 1:

[0030] Combination Figure 2 and Figure 3 The injection mold 1 also includes side frames 12 on both sides of the lower end of the fixed block 14 and a lower spring 13 at the center of the lower end of the fixed block 14. The lower ends of the side frames 12 and the lower spring 13 are fixedly connected to a base plate 11. The base plate 11 provides bottom support, the side frames 12 support both sides of the fixed block 14, and the lower spring 13 provides positioning buffer for injection molding.

[0031] Limiting grooves 141 are provided on both sides of the fixing block 14 corresponding to the engaging component 16, and an internal slot 142 is provided in the center of the fixing block 14. The limiting grooves 141 elastically limit the engaging component 16, and the internal slot 142 is used to engage the lower core 41.

[0032] The engaging assembly 16 includes a transverse spring 161 elastically disposed in a limiting groove 141, a limiting block 162 connected to one side of the transverse spring 161, a triangular slider 163 connected to the upper end of the limiting block 162 that slides and engages with the side rail 15, and a shim 164 embedded on one side of the triangular slider 163. The transverse spring 161 presses the limiting block 162 to reset the engaging assembly 16. The triangular slider 163 moves outward under the action of the limiting block 162. The shim 164 is embedded in the triangular slider 163, and the shim 164 can be replaced according to the width of the built-in replacement core 4, making it highly operable.

[0033] Example 2:

[0034] Combination Figures 2-6 The lower end of the lower core 41 is aligned with the horizontal positioning block 143 and has a slot 411. The two sides of the lower core 41 are aligned with the upper core 42 and have an embedding groove 412. The slot 411 cooperates with the horizontal positioning block 143 to achieve the mid-position of the front and rear ends. The embedding groove 412 is used to fit the upper core 42.

[0035] The upper core 42 has two sides inserted into the embedding slots 412 connected to the embedding blocks 421. The embedding blocks 421 are inserted into the embedding slots 412 to achieve overlapping correspondence of the built-in replacement core 4.

[0036] The upper mold mechanism 3 also includes an injection molding plug 32 fixedly set in the center of the upper plate 31. The lower end of the injection molding plug 32 is inserted into the upper pressure block 2. The injection molding plug 32 realizes injection introduction. When the upper mold mechanism 3 completely presses the built-in replacement core 4, the injection molding plug 32 can be inserted into the built-in replacement core 4.

[0037] Multiple sets of pressure springs 33 are fixedly installed at the lower end of the upper plate 31. The lower end of the pressure springs 33 is connected to the upper pressure block 2 to achieve elastic pressure.

[0038] 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 process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A center-positioning injection mold, comprising an injection base mold (1), characterized in that: An upper mold mechanism (3) is inserted into the upper end of the injection mold (1), an upper pressure block (2) is sleeved on the upper mold mechanism (3), and a built-in replacement core (4) is embedded inside the injection mold (1). The injection mold (1) includes a fixed block (14), and side rails (15) are fixedly provided on both sides of the fixed block (14). A locking component (16) is slidably engaged in the side rails (15). The locking component (16) is elastically embedded in the fixed block (14). The built-in replacement core (4) includes a lower core (41) and an upper core (42) that are positioned and embedded vertically. A transverse positioning block (143) is fixed inside the fixed block (14). The lower core (41) is aligned with the transverse positioning block (143) and slidably embedded. The upper mold mechanism (3) includes an upper plate (31) at the upper end. Triangular lifting blocks (311) corresponding to the locking component (16) are provided on both sides of the upper plate (31). Insert rods (34) are fixedly provided at the four corners of the upper plate (31). The upper pressure block (2) is provided through the insert rods (34).

2. The center-positioning injection mold according to claim 1, characterized in that: The injection mold (1) also includes side frames (12) on both sides of the lower end of the fixed block (14) and a lower spring (13) at the center of the lower end of the fixed block (14). The lower ends of the side frames (12) and the lower spring (13) are fixedly connected to a base plate (11).

3. A center-positioning injection mold according to claim 1, characterized in that: The fixing block (14) has a limiting groove (141) on both sides corresponding to the engaging component (16), and the fixing block (14) has an internal slot (142) in the center.

4. A center-positioning injection mold according to claim 3, characterized in that: The engaging assembly (16) includes a transverse spring (161) elastically disposed in a limiting groove (141), a limiting block (162) connected to one side of the transverse spring (161), a triangular slider (163) connected to the upper end of the limiting block (162) and slidably engaging with the side rail (15), and a gasket (164) embedded on one side of the triangular slider (163).

5. A center-positioning injection mold according to claim 1, characterized in that: The lower end of the lower core (41) is provided with a slot (411) aligned with the horizontal positioning block (143), and the two sides of the lower core (41) are provided with an embedding slot (412) aligned with the upper core (42).

6. A center-positioning injection mold according to claim 5, characterized in that: The upper core (42) has two sides inserted into the embedding slots (412) and connected to the embedding blocks (421).

7. A center-positioning injection mold according to claim 1, characterized in that: The upper mold mechanism (3) also includes an injection molding plug (32) fixedly installed in the center of the upper plate (31), and the lower end of the injection molding plug (32) is inserted into the upper pressure block (2).

8. A center-positioning injection mold according to claim 1, characterized in that: Multiple sets of pressure springs (33) are fixedly installed at the lower end of the upper plate (31).

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