A replaceable core injection mold

Abstract

The utility model relates to injection mold technical field especially, it relates to an injection mold with replaceable mold core. The utility model provides such an injection mold with replaceable mold core, including mould, mold core and sleeve, the mould middle part slidingly is provided with mold core, the both sides of mold core are fixedly connected sleeve, sleeve is clamped into the mould, still include limiting ring, fixed rod and first elastic part, the lower part of sleeve is opened in the symmetry of front and back in, the limiting ring is fixedly connected in the sliding slot, the fixed rod is slidingly arranged in the sliding slot, the fixed rod is through the limiting ring, and the first elastic part is sleeved on the fixed rod. Through the contact block upward movement, extrude fixed rod and move outward, make it with the limiting area on the clamping block and separate, release the restraint of sleeve, along with the injection mold stable extraction of mold core, to meet different injection needs, improve the use efficiency of mould.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold with a replaceable mold core. Background Technology

[0002] The mold core, also known as the "mold core," is a component installed within an injection mold to form the internal shape of a plastic product. Typically, the mold core works in conjunction with another part of the mold cavity to create the complete internal space of the mold. When molten plastic is injected into the mold, it cools and solidifies between the mold core and the cavity, thus forming the desired plastic product.

[0003] In modern injection molding processes, the ability to quickly change molds has become a key factor in improving production efficiency in order to meet the needs of multi-variety, small-batch production. Traditional injection molds typically use bolts or an integral structure to fix the mold core. Although the connection is stable, changing the mold core requires the use of tools such as wrenches and screwdrivers for disassembly and installation, which is cumbersome and time-consuming, thus affecting the efficiency of mold use.

[0004] Therefore, there is a need to provide an injection mold with a replaceable mold core. Utility Model Content

[0005] To overcome the shortcomings of traditional injection molds that typically use bolts or integral structures to fix the mold core, which, although the connection is stable, requires the use of wrenches, screwdrivers, and other tools for disassembly and installation when changing the mold core, resulting in cumbersome operation, long time consumption, and thus affecting the efficiency of mold use, this utility model provides an injection mold with a replaceable mold core.

[0006] The technical solution is as follows: A replaceable mold core injection mold includes a mold, a mold core, and a sleeve. The mold core is slidably disposed in the middle of the mold. The sleeve is fixedly connected to both the left and right sides of the mold core. The sleeve is inserted into the mold. The mold core also includes a limit ring, a fixing rod, a first elastic element, a locking block, a contact block, a pressure plate, and a second elastic element. The lower part of the sleeve has symmetrically opened grooves. The limit ring is fixedly connected in the groove. The fixing rod is slidably disposed in the groove and passes through the limit ring. The first elastic element is sleeved on the fixing rod. The two ends of the first elastic element are respectively connected to the fixing rod and the limit ring. The locking blocks are fixedly connected to both the left and right sides of the mold. The locking blocks are located inside the sleeve. The contact block is slidably disposed in the middle of the locking block. The pressure plate is slidably disposed on both the left and right sides of the mold. The top of the pressure plate contacts the bottom of the sleeve. Multiple second elastic elements are connected between the pressure plate and the mold.

[0007] Optionally, it also includes a fixed plate, a telescopic rod, and a third elastic element. Two fixed plates are slidably arranged on both the front and rear sides inside the mold. A telescopic rod is connected between the fixed plate and the mold. A third elastic element is sleeved on the telescopic rod. The two ends of the third elastic element are connected to the fixed plate and the mold, respectively.

[0008] Optionally, it also includes rollers, with sliding grooves symmetrically opened on both the front and rear sides of the mold, and rollers rotatably installed in the sliding grooves.

[0009] Optionally, it also includes a pad, with the top of the sleeve having a pad.

[0010] Optionally, it also includes a wiping block, which is inserted into the sliding groove and contacts the roller.

[0011] Optionally, it also includes anti-collision blocks, with multiple anti-collision blocks installed on the outside of the mold.

[0012] Compared with the prior art, this utility model provides an injection mold with a replaceable mold core, which has the following beneficial effects: 1. By moving the contact block upward and the extrusion fixing rod moving outward, it is disengaged from the limiting area on the card block, releasing the constraint on the sleeve, and the mold core is smoothly pulled out along the injection mold, so that the mold core can be replaced without the use of tools, meeting different injection needs and improving the efficiency of mold use.

[0013] 2. After inserting the mold core into the mold, loosen the fixing plate. The third elastic element will then move the fixing plate inward, and the telescopic rod will extend accordingly, thereby fixing the mold core and preventing it from falling off 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 three-dimensional sectional view of the mold and mold core of this utility model.

[0016] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 This is a three-dimensional sectional view of the fixing plate and telescopic rod of this utility model.

[0018] Figure 5 This is a three-dimensional cross-sectional view of the sliding groove, roller, and wiping block of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1: mold, 2: mold core, 3: sleeve, 4: limiting ring, 5: sliding groove, 6: fixing rod, 7: first elastic element, 8: locking block, 9: contact block, 10: pressure plate, 12: second elastic element, 13: fixing plate, 14: telescopic rod, 15: third elastic element, 16: sliding groove, 17: roller, 18: pad, 19: wiping block, 20: anti-collision block. Detailed Implementation

[0020] The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0021] Example 1: An injection mold with a replaceable mold core, please refer to... Figures 1-5 The mold includes a mold 1, a mold core 2, and a sleeve 3. The mold core 2 is slidably mounted in the middle of the mold 1. The sleeve 3 is fixedly connected to both the left and right sides of the mold core 2. The sleeve 3 is inserted into the mold 1. The mold also includes a limit ring 4, a fixing rod 6, a first elastic element 7, a locking block 8, a contact block 9, a pressure plate 10, and a second elastic element 12. The lower part of the sleeve 3 has symmetrically opened sliding grooves 5. The limit ring 4 is fixedly connected in the sliding grooves 5. The fixing rod 6 is slidably mounted in the sliding grooves 5 and passes through the limit ring 4. The first elastic element 7 is sleeved on the fixing rod 6. The two ends of the first elastic element 7 are connected to the fixing rod 6 and the limit ring 4, respectively. The locking blocks 8 are fixedly mounted on both the left and right sides of the mold 1. The locking blocks 8 are located inside the sleeve 3. The contact block 9 is slidably mounted in the middle of the locking block 8. Pressure plates 10 are slidably installed on both the left and right sides. The top of the pressure plates 10 contacts the bottom of the sleeve 3. Several second elastic elements 12 are connected between the pressure plates 10 and the mold 1. Rollers 17 are also included. Sliding grooves 16 are symmetrically opened on both the front and rear sides of the mold 1. Rollers 17 are rotatably installed in the sliding grooves 16. When the mold core 2 is inserted, its sidewall contacts the rollers 17, and the rollers 17 roll accordingly, converting sliding friction into rolling friction, reducing insertion resistance, reducing wear, and guiding the mold core 2 smoothly into the predetermined position. A protective pad 18 is provided on the top of the sleeve 3 to provide cushioning, reduce the pressure when pressing the sleeve 3, and improve hand comfort. A wiping block 19 is inserted in the sliding groove 16 and contacts the rollers 17. The rollers 17 are cleaned to keep them clean. Four anti-collision blocks 20 are installed on the outside of the mold 1 to absorb external impacts during handling, installation, or operation, preventing the mold 1 body from being damaged by bumps and improving the safety and durability of the equipment.

[0022] When injection mold 1 is needed, insert mold core 2 into the guide groove of mold 1. The sleeves 3 on both sides of mold core 2 then enter the fixing groove of mold 1. When the sleeves 3 are pressed down, the locking block 8 contacts the fixing rod 6 and squeezes the fixing rod 6 outward. The first elastic element 7 is compressed accordingly. When the sleeve 3 is fully in place, the locking block 8 disengages from the fixing rod 6, the first elastic element 7 rebounds, and pushes the fixing rod 6 inward, locking it into the limiting area on the locking block 8, thus achieving lateral locking of the sleeve 3. This ensures that mold core 2 will not shift due to high pressure during injection molding. To remove mold core 2... When the sleeve 3 is pressed down, the sleeve 3 moves downward and pushes the pressure plate 10 downward, compressing the second elastic element 12. When the pressure plate 10 is released, the second elastic element 12 rebounds and pushes the pressure plate 10 upward. The pressure plate 10 moves upward and contacts the contact block 9, and drives the contact block 9 to move upward, squeezing the fixing rod 6 to move outward, so that it is separated from the limiting area on the locking block 8, releasing the constraint on the sleeve 3, and smoothly pulling out the mold core 2 along the injection mold 1. Through the above operation, the mold core 2 can be replaced without the need for practical tools, meeting different injection molding needs and improving the utilization efficiency of the mold 1.

[0023] Example 2: Based on Example 1, please refer to... Figure 4 It also includes a fixed plate 13, a telescopic rod 14 and a third elastic element 15. Two fixed plates 13 are slidably arranged on both the front and rear sides inside the mold 1. The fixed plate 13 is connected to the mold 1 by a telescopic rod 14. The telescopic rod 14 is fitted with a third elastic element 15. The two ends of the third elastic element 15 are connected to the fixed plate 13 and the mold 1 respectively.

[0024] Before inserting the mold core 2 into the mold 1, push the fixing plate 13 outward, and the telescopic rod 14 will retract accordingly. The third elastic element 15 will be compressed accordingly. Then insert the mold core 2 into the mold 1. After insertion, release the fixing plate 13. The third elastic element 15 will then drive the fixing plate 13 to move inward, and the telescopic rod 14 will extend accordingly, thereby fixing the mold core 2 and preventing the mold core 2 from falling off the mold 1.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A replaceable mold core injection mold, comprising a mold (1), a mold core (2), and a sleeve (3), wherein the mold core (2) is slidably disposed in the middle of the mold (1), and the sleeve (3) is fixedly connected to both the left and right sides of the mold core (2), the sleeve (3) being inserted into the mold (1), characterized in that, It also includes a limiting ring (4), a fixing rod (6), a first elastic element (7), a locking block (8), a contact block (9), a pressure plate (10), and a second elastic element (12). The lower part of the sleeve (3) has symmetrically arranged sliding grooves (5). A limiting ring (4) is fixedly connected within the sliding groove (5). A fixing rod (6) is slidably arranged within the sliding groove (5). The fixing rod (6) passes through the limiting ring (4). A first elastic element (7) is fitted onto the fixing rod (6). The two ends of the component (7) are connected to the fixed rod (6) and the limiting ring (4) respectively. The left and right sides of the mold (1) are fixedly connected to the locking block (8). The locking block (8) is located inside the sleeve (3). The locking block (8) is slidably provided with a contact block (9) in the middle. The left and right sides of the mold (1) are slidably provided with a pressure plate (10). The top of the pressure plate (10) contacts the bottom of the sleeve (3). Multiple second elastic elements (12) are connected between the pressure plate (10) and the mold (1).

2. The injection mold with a replaceable mold core according to claim 1, characterized in that, It also includes a fixed plate (13), a telescopic rod (14) and a third elastic element (15). Two fixed plates (13) are slidably arranged on both the front and back sides inside the mold (1). The fixed plate (13) is connected to the mold (1) by a telescopic rod (14). The telescopic rod (14) is fitted with a third elastic element (15). The two ends of the third elastic element (15) are connected to the fixed plate (13) and the mold (1) respectively.

3. The injection mold with a replaceable mold core according to claim 2, characterized in that, It also includes rollers (17), and sliding grooves (16) are symmetrically opened on both the front and rear sides of the mold (1), and rollers (17) are rotatably arranged in the sliding grooves (16).

4. The injection mold with a replaceable mold core according to claim 3, characterized in that, It also includes a pad (18), and the top of the sleeve (3) is provided with a pad (18).

5. The injection mold with a replaceable mold core according to claim 4, characterized in that, It also includes a wiping block (19), which is inserted into the sliding groove (16) and contacts the roller (17).

6. The injection mold with a replaceable mold core according to claim 5, characterized in that, It also includes anti-collision blocks (20), and multiple anti-collision blocks (20) are installed on the outside of the mold (1).

Images