Plastic part injection mold convenient for mold core replacement

Abstract

The plastic part injection mold comprises a base body and a motor fixedly installed on the inner side of the base body, a stand column plate is fixedly installed on the upper end face of the base body, and a first sliding rod is fixedly installed on the stand column plate. According to the plastic part injection mold convenient to replace the mold core, the first mold box can be rapidly taken out through the bolt pull rod, the bolt pull rod is slidably installed on the second mold frame, the bolt pull rod and the first positioning hole form a clamping structure, and the bolt pull rod is pulled to be separated from the first positioning hole; when the first mold box needs to be placed, the bolt pull rod is pulled and the first mold box is moved into the second mold frame, and when the first mold box is moved to a fixed position, the bolt pull rod is released, so that the first mold box is taken out; and the bolt pull rod automatically resets under the action of the reset spring and is clamped with the first positioning hole, so that the function of quickly assembling and disassembling the first mold box is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a plastic part injection mold which is convenient for replacing a mold core. Background Art

[0002] The injection mold, as its name suggests, is a device that can be used to inject and shape liquid plastics, and the appearance of the injection molded product can be transformed into the shape required by the user by setting the injection mold core of different shapes;

[0003] For example, an injection mold ejection mechanism and an injection mold with the utility model application number CN202211181817.4 relate to the field of injection mold technology. The injection mold ejection mechanism and the injection mold include a support plate, the surface of the support plate is provided with an ejection device, the ejection device includes a pushing device, the output end of the pushing device is fixedly mounted with a slide plate, and the surface of the slide plate is slidably mounted with a moving rod. In the injection mold ejection mechanism, the sealing plate will squeeze the gas inside the ejection frame. When the sealing plate cannot move upward inside the ejection frame, the sealing plate will push the ejection frame to move upward. The upward movement of the ejection frame will push the plastic part inside the lower mold to move upward. When the ejection frame moves toward the outside of the groove, the gas inside the ejection frame will be discharged from both sides of the ejection frame. The gas ejected through the ejection frame will flow between the plastic part and the lower mold, thereby preventing the plastic part from adhering to the inner wall of the lower mold.

[0004] In actual use, the above-mentioned injection mold can only be used to inject molded objects of the same shape, and the corresponding mold core cannot be flexibly replaced according to the different shapes of the required injection molded products. As a result, when the user uses the injection mold to inject finished products of different shapes, the lower mold and the upper mold of the injection mold need to be replaced. Therefore, the user needs to waste a lot of time to disassemble and replace the lower mold and the upper mold.

[0005] Therefore, we propose a plastic parts injection mold that is easy to replace the mold core in order to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a plastic parts injection mold that is easy to replace the mold core, so as to solve the problem proposed in the above background technology that the corresponding mold core cannot be flexibly replaced according to the different shapes of the required injection molded products, resulting in the user needing to replace the lower mold and the upper mold of the injection mold when using the injection mold to inject finished products of different shapes, so the user needs to waste a lot of time to disassemble and replace the lower mold and the upper mold.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic part injection mold that is convenient for core replacement, comprising a base body and a motor fixedly mounted on the inner side of the base body;

[0008] A column plate is fixedly installed on the upper end surface of the base body, and a first slide bar is fixedly installed on the column plate, and a first sleeve is slidably installed on the first slide bar, and a second mold frame and a first mold frame are fixedly installed on the first sleeve, a latch rod is slidably installed on the second mold frame, and an elastic mechanism is arranged on the latch rod, and the elastic mechanism can perform a quick loading and unloading function on the first mold box and the second mold box through the latch rod.

[0009] Furthermore, a bidirectional threaded rod is fixedly mounted on the output end of the motor, and a demoulding mechanism is arranged on the bidirectional threaded rod. The demoulding mechanism can quickly connect and separate the second mold frame and the first mold frame through the bidirectional threaded rod.

[0010] Furthermore, the elastic mechanism includes a reset spring, the reset spring is fixedly mounted on the second mold frame, and one end of the reset spring away from the second mold frame is fixedly connected to the latch rod.

[0011] Furthermore, a second mold box is slidably installed inside the first mold frame, and a second positioning hole is provided on the first mold frame.

[0012] Furthermore, a filling port is provided on the second mold frame, the first mold box is slidably installed inside the second mold frame, and an elastic positioning pin group is fixedly installed on the second mold frame.

[0013] Furthermore, a limiting strip group is fixedly installed on the outer side of the first mold box, and a filling hole and a first positioning hole are opened on the first mold box.

[0014] Furthermore, the demolding mechanism includes a first threaded sleeve, the first threaded sleeve and the second threaded sleeve are sleeved on the outside of the bidirectional threaded rod, and the ends of the first threaded sleeve and the second threaded sleeve away from the bidirectional threaded rod are fixedly connected to the lower end surfaces of the second mold frame and the first mold frame.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The first mold box can be quickly taken out by the latch rod, which is slidably installed on the second mold frame, and the latch rod and the first positioning hole form a snap-fit ​​structure. The latch rod is pulled to make the latch rod disengage from the first positioning hole. At this time, the first mold box can be moved outward and taken out. When the first mold box needs to be placed, the latch rod is pulled and the first mold box is moved into the second mold frame. When the first mold box moves to a fixed position, the latch rod is released. The latch rod is automatically reset under the action of a reset spring and snaps into the first positioning hole, thereby realizing the function of quickly loading and unloading the first mold box.

[0017] Furthermore, the elastic positioning pin group and the second positioning hole make the second mold frame more stable when docking with the first mold frame, and the elastic positioning pin group can buffer the impact force generated when the second mold frame contacts the first mold frame, thereby increasing the service life of the second mold frame and the first mold frame;

[0018] Furthermore, the first mold box can be stably docked and installed with the second mold frame through the limit bar group. Multiple groups of limit bar groups are arranged on the outside of the first mold box. When the first mold box and the second mold frame are docked and installed, the corresponding docking position of the first mold box and the second mold frame is first determined by the limit bar group, so that the first mold box and the second mold frame will not be skewed when docking;

[0019] Furthermore, the first mold frame and the second mold frame can be docked and separated by the bidirectional threaded rod, the first threaded sleeve and the second threaded sleeve. The first threaded sleeve and the second threaded sleeve are both sleeved on the bidirectional threaded rod, and the upper end surfaces of the first threaded sleeve and the second threaded sleeve are respectively fixedly connected to the first mold frame and the second mold frame. The first threaded sleeve and the second threaded sleeve are moved by rotating the bidirectional threaded rod, thereby moving the first mold frame and the second mold frame, which facilitates docking injection molding and separation demoulding of the first mold frame and the second mold frame.

[0020] Furthermore, the first slide bar and the first sleeve can make the first mold frame and the second mold frame more stable when moving. The first sleeve is fixedly installed on the outside of the first mold frame and the second mold frame. When the first mold frame and the second mold frame move, the first sleeve moves synchronously on the first slide bar, thereby improving the movement stability of the first mold frame and the second mold frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0024] Figure 4 It is a schematic diagram of the front cross-sectional structure of a partial first mold frame and a second mold frame of the utility model;

[0025] Figure 5 This is a side structural diagram of the first mold frame of the utility model;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the first mold box of the utility model.

[0027] In the figure: 1. base body; 2. motor; 3. bidirectional threaded rod; 4. first threaded sleeve; 5. second threaded sleeve; 6. first mold frame; 7. second mold frame; 8. first mold box; 9. limit strip group; 10. second mold box; 11. latch rod; 12. return spring; 13. filling port; 14. elastic positioning pin group; 15. first positioning hole; 16. second positioning hole; 17. column plate; 18. first slide rod; 19. first sleeve; 20. filling hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1:

[0030] like Figure 1 , Figure 4 , Figure 5 and Figure 6 The technical solution shown in the figure discloses an elastic mechanism in order to solve the problem that the injection mold cannot flexibly replace the corresponding mold core according to the different shapes of the required injection molded products, so the user needs to waste a lot of time to disassemble and replace the injection mold. The specific contents are as follows:

[0031] A base body 1 and a motor 2 fixedly mounted on the inner side of the base body 1, a second mold frame 7 and a first mold frame 6 are fixedly mounted on the first sleeve 19, a latch rod 11 is slidably mounted on the second mold frame 7, and an elastic mechanism is arranged on the latch rod 11, the elastic mechanism can quickly load and unload the first mold box 8 and the second mold box 10 through the latch rod 11, the elastic mechanism includes a reset spring 12, a reset spring 12 is fixedly mounted on the second mold frame 7, and one end of the reset spring 12 away from the second mold frame 7 is fixedly connected to the latch rod 11, the second mold box 10 is slidably mounted on the inner side of the first mold frame 6, a second positioning hole 16 is provided on the first mold frame 6, the first mold box 8 is slidably mounted on the inner side of the second mold frame 7, an elastic positioning pin group 14 is fixedly mounted on the second mold frame 7, a limit strip group 9 is fixedly mounted on the outer side of the first mold box 8, and a filling hole 20 and a first positioning hole 15 are provided on the first mold box 8;

[0032] When it is necessary to replace the first mold box 8 and the second mold box 10, pull the latch rod 11 upwards to disengage the latch rod 11 from the first positioning hole 15. At this time, the first mold box 8 and the second mold box 10 can be moved outward and separated from the second mold frame 7 and the first mold frame 6. When it is necessary to install the first mold box 8 and the second mold box 10 in the second mold frame 7 and the first mold frame 6, it is only necessary to determine the corresponding docking position of the first mold box 8 and the second mold frame 7 through the limit strip group 9. After the first mold box 8 moves to a fixed position, release the latch rod 11. The latch rod 11 is reset under the action of the reset spring 12 and engages with the first positioning hole 15.

[0033] Embodiment 2:

[0034] like Figure 1 , Figure 3 and Figure 4 The technical solution shown in the figure discloses a demoulding mechanism in order to solve the inconvenience of injection mold docking and demoulding, which inconveniences the user to operate. The specific contents are as follows:

[0035] The second mold frame 7 is provided with a filling port 13, a bidirectional threaded rod 3 is fixedly installed at the output end of the motor 2, and a demoulding mechanism is provided on the bidirectional threaded rod 3, and the demoulding mechanism can quickly connect and separate the second mold frame 7 and the first mold frame 6 through the bidirectional threaded rod 3, and the demoulding mechanism includes a first threaded sleeve 4, and the first threaded sleeve 4 and the second threaded sleeve 5 are sleeved on the outside of the bidirectional threaded rod 3, and the ends of the first threaded sleeve 4 and the second threaded sleeve 5 away from the bidirectional threaded rod 3 are fixedly connected to the lower end surfaces of the second mold frame 7 and the first mold frame 6;

[0036] When the second mold frame 7 and the first mold frame 6 need to be docked, it is only necessary to start the motor 2. The motor 2 starts and drives the bidirectional threaded rod 3 to rotate. The rotation of the bidirectional threaded rod 3 can cause the first threaded sleeve 4 and the second threaded sleeve 5 sleeved thereon to drive the second mold frame 7 and the first mold frame 6 to move. At this time, the second mold frame 7 and the first mold frame 6 are docked, and the second mold frame 7 and the first mold frame 6 can buffer the impact force generated when the second mold frame 7 and the first mold frame 6 are docked under the action of the elastic locating pin group 14 and the second locating hole 16, thereby enhancing the service life of the second mold frame 7 and the first mold frame 6. After the second mold frame 7 and the first mold frame 6 are docked, the discharge pipe can be connected to the filling port 13, and the liquid plastic can flow into the first mold box 8 and the second mold box 10 through the filling port 13 and the filling hole 20. When the second mold frame 7 and the first mold frame 6 need to be separated, the motor 2 can be started in reverse.

[0037] Embodiment three:

[0038] like Figure 1 and Figure 3The technical solution shown in the figure discloses a stabilizing mechanism in order to solve the problem that the first mold frame 6 and the second mold frame 7 may be skewed when moving, thereby affecting the injection molding effect of the injection mold. The specific contents are as follows:

[0039] A column plate 17 is fixedly mounted on the upper end surface of the base body 1, a first slide bar 18 is fixedly mounted on the column plate 17, and a first sleeve 19 is slidably mounted on the first slide bar 18;

[0040] When the first mold frame 6 and the second mold frame 7 move, the first sleeve 19 moves synchronously on the first slide bar 18 to improve the movement stability of the first mold frame 6 and the second mold frame 7 so that the first mold frame 6 and the second mold frame 7 will not be skewed when moving.

[0041] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic parts injection mold that is easy to replace the mold core, comprising a base body (1) and a motor (2) fixedly mounted on the inner side of the base body (1); Features: A column plate (17) is fixedly mounted on the upper end surface of the base body (1), and a first slide bar (18) is fixedly mounted on the column plate (17), and a first sleeve (19) is slidably mounted on the first slide bar (18), and a second mold frame (7) and a first mold frame (6) are fixedly mounted on the first sleeve (19), a latch rod (11) is slidably mounted on the second mold frame (7), and an elastic mechanism is arranged on the latch rod (11), and the elastic mechanism can perform a quick assembly and disassembly function on the first mold box (8) and the second mold box (10) through the latch rod (11).

2. The plastic part injection mold that is easy to replace the mold core according to claim 1, characterized in that: A bidirectional threaded rod (3) is fixedly mounted on the output end of the motor (2), and a demoulding mechanism is arranged on the bidirectional threaded rod (3). The demoulding mechanism can quickly connect and separate the second mold frame (7) and the first mold frame (6) through the bidirectional threaded rod (3).

3. The plastic part injection mold that is easy to replace the mold core according to claim 1, characterized in that: The elastic mechanism comprises a return spring (12), the return spring (12) is fixedly mounted on the second mold frame (7), and one end of the return spring (12) away from the second mold frame (7) is fixedly connected to the latch rod (11).

4. The plastic part injection mold that is easy to replace the mold core according to claim 1, characterized in that: The second mold box (10) is slidably mounted inside the first mold frame (6), and a second positioning hole (16) is provided on the first mold frame (6).

5. The plastic part injection mold that is easy to replace the mold core according to claim 1, characterized in that: The second mold frame (7) is provided with a filling port (13), the first mold box (8) is slidably mounted inside the second mold frame (7), and the second mold frame (7) is fixedly mounted with an elastic positioning pin group (14).

6. The plastic part injection mold that is easy to replace the mold core according to claim 5, characterized in that: A limiting strip group (9) is fixedly installed on the outer side of the first mold box (8), and a filling hole (20) and a first positioning hole (15) are provided on the first mold box (8).

7. The plastic part injection mold that is easy to replace the mold core according to claim 2, characterized in that: The demoulding mechanism comprises a first threaded sleeve (4), the first threaded sleeve (4) and the second threaded sleeve (5) are sleeved on the outside of the bidirectional threaded rod (3), and the ends of the first threaded sleeve (4) and the second threaded sleeve (5) away from the bidirectional threaded rod (3) are fixedly connected to the lower end surfaces of the second mold frame (7) and the first mold frame (6).

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