Structure for connecting INS rear mold elastic block with front mold sliding block

Abstract

The utility model discloses a structure for connecting an INS rear mold elastic block with a front mold sliding block. The structure comprises a front mold block, a mold cavity, a mold core, a positioning block, a sprue, a sub-runner and a positioning ring, a cavity and a main runner are formed in the front module, a diaphragm is embedded and connected in the cavity, a fixing groove is formed in the outer surface of one side of the front module, and a positioning block is arranged on the upper surface of the fixing groove; according to the utility model, a modular design is adopted, a staged positioning mechanism is adopted to solve the problem of fixing the diaphragm without an effective positioning surface, the front mold slide block is pre-pressed by the spring in a mold opening stage, initial fixing force is always provided for the diaphragm, the diaphragm is prevented from gravity offset due to vibration when a piece is taken or embedded, and the service life of the diaphragm is prolonged. The rear mold elastic block has the positioning function at the last stage of mold closing, the situation that the diaphragm is unstable due to separation of the sliding block is avoided, high-precision dynamic positioning is achieved in a limited space through cooperation of mechanical relay and time sequence, and traditional rigid positioning is converted into a flexible-rigid mixed positioning mode.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a structure for an INS rear mold spring block to relay the front mold slider. Background Technology

[0002] In INS injection molds, many INS diaphragms lack proper positioning within the cavity. After placement, the diaphragm shifts during mold closing, necessitating a rear mold spring block to relay the front mold slide block for diaphragm positioning. While widely used in manufacturing, existing INS injection molds still have drawbacks. Firstly, the diaphragm positioning structure design is limited, resulting in poor stability. Conventional INS injection molds typically use the straight surfaces of the diaphragm's four sides to conform to the cavity for positioning, relying on these straight surfaces and specific geometric constraints. However, when the diaphragm lacks straight surfaces or the straight surfaces are located in the rear mold... When there are curved surfaces, the mold lacks a reliable physical positioning benchmark, which makes the diaphragm prone to shifting or tilting in the cavity, making it impossible to guarantee the accuracy of injection molding. For irregular or micro diaphragms, additional structures are required. Secondly, the mold is not adaptable to complex shapes. When there are no straight surfaces around the diaphragm, the diaphragm needs to be extended to make positioning holes, which leads to waste of raw materials, increases the complexity of the vacuum forming mold, and raises the overall cost. Moreover, when the diaphragm is extended to make positioning holes, the diaphragm needs to be manually hung for positioning during injection molding. The operation cycle is long and depends on the skill level. After molding, secondary processing is required to remove the positioning holes, which reduces production efficiency and increases the risk of defective products. Utility Model Content

[0003] The purpose of this invention is to provide a structure in which the INS rear mold spring block relays the front mold slider, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a structure for an INS rear mold spring block to relay a front mold slider, including a front module, the front module having a cavity and a main channel, a diaphragm embedded in the cavity, a fixing groove on one outer surface of the front module, a positioning block on the upper surface of the fixing groove, a positioning slider on one outer surface of the front module, a first positioning pin on the positioning slider, and one end of the first positioning pin fixedly connected to the front module, and an exhaust hole on one outer wall of the front module.

[0005] As a further technical solution of this utility model, a rear module is provided on one outer surface of the front module, and a core is provided on the upper surface of the rear module, with the core sleeved inside the cavity.

[0006] As a further technical solution of this utility model, the rear module is provided with a guide groove and a flow channel, and a positioning slider is sleeved in the guide groove.

[0007] As a further technical solution of this utility model, a locking block is provided on one outer surface of the rear module, and a positioning groove is provided on the upper surface of the locking block.

[0008] As a further technical solution of this utility model, a positioning spring block is provided on one outer surface of the rear module, a second positioning pin is provided on the positioning spring block, and one end of the second positioning pin is fixedly connected to the rear module, and a second spring is fixedly connected inside the positioning spring block.

[0009] As a further technical solution of this utility model, a first spring is fixedly connected inside the positioning slider.

[0010] As a further technical solution of this utility model, a gate is provided on the upper surface of the front module, and a positioning ring is fixedly connected to the upper surface of the front module.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model adopts a modular design. This INS rear mold spring block relaying the front mold slider structure uses a staged positioning mechanism to solve the problem of diaphragm fixation when there is no effective positioning surface. It is equipped with a front mold slider and a rear mold slider, providing dual positioning protection. During the mold opening stage, the front mold slider is pre-pressed by a spring, always providing an initial fixing force to the diaphragm and preventing the diaphragm from shifting due to gravity during part removal or insertion. The rear mold spring block takes over the positioning function at the end of the mold closing stage. It dynamically compensates for the gap between the diaphragm and the mold through a spring, preventing the diaphragm from becoming unstable due to the slider detaching. The front mold slider and the rear mold spring block form a relay positioning, covering the entire cycle of mold operation, eliminating the positioning blind spots that may be caused by the traditional single slider. This structure achieves high-precision dynamic positioning in a limited space through mechanical relay and temporal coordination, transforming the traditional rigid positioning into a flexible to rigid hybrid positioning mode, providing a reliable and economical solution for insert molding without a reference surface. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the front module of this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the rear module of this utility model;

[0015] Figure 3 This is a top view of the structure of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the positioning slider of this utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of the positioning spring block of this utility model;

[0018] Figure 6 This is a cross-sectional structural diagram of the present invention in the mold-open state.

[0019] In the diagram: 1. Front module; 2. Cavity; 3. Core; 4. Positioning slider; 5. First positioning pin; 6. Main runner; 7. Fixing groove; 8. Locking block; 9. Guide groove; 10. Positioning spring block; 11. First spring; 12. Second positioning pin; 13. Second spring; 14. Vent hole; 15. Positioning groove; 16. Positioning block; 17. Diaphragm; 18. Gate; 19. Runner; 20. Positioning ring; 21. Rear module. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Please see the appendix Figure 1 -Appendix Figure 6This utility model provides an embodiment of an INS rear mold spring block relaying the front mold slider structure, including a front module 1, a cavity 2 and a main channel 6 inside the front module 1, a diaphragm 17 embedded and connected inside the cavity 2, a fixing groove 7 on one outer surface of the front module 1, a positioning block 16 on the upper surface of the fixing groove 7, a positioning slider 4 on one outer surface of the front module 1, a first positioning pin 5 on the positioning slider 4, and one end of the first positioning pin 5 fixedly connected inside the front module 1, and an exhaust hole 14 on one outer wall of the front module 1; a rear module 21 on one outer surface of the front module 1, a core 3 on the upper surface of the rear module 21, the core 3 being sleeved inside the cavity 2, and after mold closing, the core 3 and the cavity 2 forming the molding space of the mold; a guide groove 9 and a branch channel 19 inside the rear module 21, the positioning slider 4 being sleeved inside the guide groove 9, the positioning slider 4 preventing the diaphragm 17 from moving or falling off; one of the rear modules 21 A locking block 8 is provided on the outer side surface, and a positioning groove 15 is provided on the upper surface of the locking block 8. The locking block 8 prevents the front module 1 and the rear module 21 from shifting due to high pressure when the mold is closed. A positioning spring block 10 is provided on one outer side surface of the rear module 21. A second positioning pin 12 is provided on the positioning spring block 10, and one end of the second positioning pin 12 is fixedly connected to the rear module 21. A second spring 13 is fixedly connected inside the positioning spring block 10. The positioning spring block 10 can effectively prevent the positioning slider 4 from slipping and shifting when it is separated from the diaphragm 17. A first spring 11 is fixedly connected inside the positioning slider 4. When the mold is open, the positioning slider 4 will always maintain a forward force under the action of the first spring 11. A gate 18 is provided on the upper surface of the front module 1, and a positioning ring 20 is fixedly connected to the upper surface of the front module 1. The positioning ring 20 ensures that the mold is coaxial with the injection molding machine nozzle when installed, and can realize the quick assembly and disassembly of the mold on the injection molding machine.

[0022] Working Principle: Using this invention, firstly, the positioning ring 20 on the upper surface of the front module 1 is aligned with the center of the injection molding machine nozzle. The diaphragm 17 is placed inside the cavity 2. When the diaphragm 17 lacks an effective positioning surface within the cavity 2, a positioning slider 4 for pressing the diaphragm 17 is designed within the front module 1. The positioning slider 4 is fixedly connected to the front module 1 via a first positioning pin 5. In the mold-opening state, the positioning slider 4 remains forward under the action of the first spring 11, meaning that the positioning slider 4 and the diaphragm 17 are partially pressed together, preventing the diaphragm 17 from moving or falling off. In the final stage of mold closing, the positioning slider 4 approaches the guide groove 9 in the rear module 21 until it is embedded in the guide groove 9, causing the positioning slider 4 to detach from the diaphragm 17. To prevent the diaphragm from detaching... When 17 slips and shifts, a positioning spring block 10 is provided in the rear module 21. The positioning spring block 10 is fixedly connected to the rear module 21 by the second positioning pin 12. When the mold is closed for the last distance, the positioning spring block 10 presses the diaphragm 17 under the action of the second spring 13. The locking block 8 is gradually embedded in the fixing groove 7, and the positioning block 16 provided on the upper surface of the fixing groove 7 is fixedly connected to the positioning groove 15 opened on the locking block 8 until the mold is completely closed. The core 3 and the cavity 2 constitute the forming space of the mold. The injection molding machine injects high-temperature molten plastic into the mold through the gate 18 under high pressure. The high-temperature molten plastic enters the cavity 2 through the main runner 6 and the branch runner 19. The vent hole 14 provided on the outer wall of the mold discharges the gas in the cavity 2, ensuring that the molten plastic is smoothly filled into the cavity 2 and avoiding product defects caused by gas retention.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A structure for an INS rear mold spring block to relay a front mold slider, comprising a front module (1), characterized in that: The front module (1) has a cavity (2) and a main channel (6) inside. A diaphragm (17) is embedded and connected inside the cavity (2). A fixing groove (7) is provided on one side of the outer surface of the front module (1). A positioning block (16) is provided on the upper surface of the fixing groove (7). A positioning slider (4) is provided on one side of the outer surface of the front module (1). A first positioning pin (5) is provided on the positioning slider (4). One end of the first positioning pin (5) is fixedly connected to the front module (1). An exhaust hole (14) is provided on one side of the outer wall of the front module (1).

2. The structure of the INS rear mold spring block relaying the front mold slider according to claim 1, characterized in that: A rear module (21) is provided on one outer surface of the front module (1), and a core (3) is provided on the upper surface of the rear module (21). The core (3) is fitted into the cavity (2).

3. The structure of an INS rear mold spring block relaying a front mold slider according to claim 2, characterized in that: The rear module (21) is provided with a guide groove (9) and a flow channel (19), and a positioning slider (4) is sleeved in the guide groove (9).

4. The structure of an INS rear mold spring block relaying a front mold slider according to claim 3, characterized in that: A locking block (8) is provided on one outer surface of the rear module (21), and a positioning groove (15) is provided on the upper surface of the locking block (8).

5. The structure of an INS rear mold spring block relaying a front mold slider according to claim 4, characterized in that: A positioning spring block (10) is provided on one outer surface of the rear module (21). A second positioning pin (12) is provided on the positioning spring block (10), and one end of the second positioning pin (12) is fixedly connected to the rear module (21). A second spring (13) is fixedly connected inside the positioning spring block (10).

6. The structure of an INS rear mold spring block relaying a front mold slider according to claim 1, characterized in that: The positioning slider (4) is fixedly connected to a first spring (11).

7. The structure of an INS rear mold spring block relaying a front mold slider according to claim 1, characterized in that: The upper surface of the front module (1) is provided with a gate (18), and a positioning ring (20) is fixedly connected to the upper surface of the front module (1).

Images