Mold frame with preheating function for injection mold

Abstract

The utility model relates to the field of injection molds, and particularly discloses a mold frame with a preheating function for an injection mold, which comprises an upper mold frame and a lower mold frame, a heating mechanism is arranged between the upper mold frame and the lower mold frame, the heating mechanism comprises a section mold positioning frame and a heat conduction clamping plate, the side surface of the section mold positioning frame is provided with a guide chute, and the heat conduction clamping plate is arranged in the guide chute. A rotating lug plate is installed on the upper surface of one end of the section mold positioning frame, a press-fit lead screw is installed in the rotating lug plate, a clamping groove is formed in the position, located on the upper surface of the lower mold frame, below the section mold positioning frame, a heating wire is connected to the side surface of a heat conduction clamping plate, and a heating wire is installed in the heating mechanism. The installation position of the arranged heat conduction clamping plate can be adjusted on the section mold positioning frame, the section mold can be limited and fixed by controlling the section mold positioning frame, meanwhile, the periphery of the section mold can be heated at the same time through the heat conduction clamping plate, the heating efficiency can be improved, and meanwhile it is avoided that a runner needs to be formed in the section mold.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to a mold frame for an injection mold with a preheating function. Background Art

[0002] In order to protect the mold and improve the efficiency of mold use, it is very necessary to keep the mold working state within a certain temperature range as much as possible. If the mold is not preheated, on the one hand, due to the low mold temperature, it is easy to cause defects such as molding difficulties, mold sticking, and casting cracks. On the other hand, due to the large temperature changes of the mold and the large cold and hot stresses, it is easy to cause mold damage. In severe cases, it may cause the mold to explode.

[0003] However, currently, most of the injection molds on the market are preheated by opening a hot oil channel for heating, and the temperature rise efficiency of hot oil heating is slow. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a mold frame for an injection mold with a preheating function, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a mold frame for an injection mold with a preheating function, comprising an upper mold frame and a lower mold frame, a heating mechanism is arranged between the upper mold frame and the lower mold frame, the heating mechanism comprising: a mold positioning frame, a heat-conducting splint, a guide groove is provided on the side surface of the mold positioning frame, a rotating ear plate is installed on the upper surface of one end of the mold positioning frame, a pressing screw is installed inside the rotating ear plate, a clamping groove is provided on the upper surface of the lower mold frame below the mold positioning frame, a heating wire is connected to the side surface of the heat-conducting splint, and a heating wire is installed inside the heating mechanism.

[0006] As a further solution of the present invention: the internal array of the mold positioning frame is provided with bolt positioning holes.

[0007] As a further solution of the present invention: a guide rod is connected between the upper mold frame and the lower mold frame, an upper mold is installed on the lower surface of the upper mold frame, and a lower mold is installed on the upper surface of the lower mold frame below the upper mold.

[0008] As a further solution of the present invention: the mold positioning frame is slidably connected to the clamping groove, and a limiting slider is provided on the lower surface of the heat-conducting clamping plate located inside the guide groove.

[0009] As a further solution of the present invention, the pressing screw is engaged and rotatably connected with the rotating ear plate.

[0010] As a further solution of the present invention: a positioning bolt is connected between the interior of the bolt positioning hole and the lower mold frame.

[0011] As a further solution of the present invention: the rotating ear plate is fixedly connected to the mold positioning frame.

[0012] As a further solution of the present invention: the upper mold frame is slidably connected to the guide rod, the upper mold is fixedly connected to the upper mold frame by bolts, and the upper surface of the lower mold frame is provided with a slot below the lower mold.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The heat-conducting splint can adjust the installation position on the mold positioning frame, and the mold can be limited and fixed by controlling the mold positioning frame. At the same time, the heat-conducting splint can heat the four sides of the mold at the same time, which can increase the heating efficiency and avoid the need to open a flow channel inside the mold.

[0015] By rotating the pressing screw in the opposite direction, the heat-conducting splint will move away from the side surface of the lower mold under the action of the spring, cutting off the heat transfer. After the heat-conducting splint continues to move outward to the outer position of the lower mold frame, the upper mold frame as a whole is controlled to move downward on the outer side of the guide rod, and the heat-conducting splint will not affect the pressing and forming of the upper and lower molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a mold frame for an injection mold with a preheating function;

[0017] Figure 2 This is a schematic diagram of the structure of a heating mechanism in a mold base for an injection mold with a preheating function;

[0018] Figure 3 A top view of a lower mold frame of an injection mold with a preheating function;

[0019] Figure 4 A side view of an overall device in a mold base for an injection mold with a preheating function;

[0020] Figure 5 The present invention is a cross-sectional view of the entire device in a mold frame for an injection mold with a preheating function.

[0021] In the figure: 1. Upper mold frame; 2. Lower mold frame; 3. Upper mold; 4. Lower mold; 5. Heating mechanism; 6. Guide rod; 201. Clamping groove; 501. Mold positioning frame; 502. Guide slide; 503. Bolt positioning hole; 504. Heat-conducting splint; 505. Heating wire; 506. Pressing screw; 507. Rotating ear plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-5 As shown, this embodiment provides a mold frame for an injection mold with a preheating function, including an upper mold frame 1 and a lower mold frame 2. A heating mechanism 5 is provided between the upper mold frame 1 and the lower mold frame 2. The heating mechanism 5 includes: a mold positioning frame 501 and a heat-conducting clamping plate 504. A guide groove 502 is provided on the side surface of the mold positioning frame 501. A limit slider is provided on the lower surface of the heat-conducting clamping plate 504 located inside the guide groove 502. A rotating ear plate 507 is installed on the upper surface of one end of the mold positioning frame 501. The rotating ear plate 507 is fixedly connected to the mold positioning frame 501. A pressing screw 506 is installed inside the rotating ear plate 507, and the pressing screw 506 is engaged and rotatably connected with the rotating ear plate 507. The outer side of the pressing screw 506 is located on the side surface of the heat-conducting clamp 504 and a spring is installed. A clamping groove 201 is provided on the upper surface of the lower mold frame 2 below the mold positioning frame 501. The mold positioning frame 501 is slidably connected to the clamping groove 201. A heating wire 505 is connected to the side surface of the heat-conducting clamp 504. A heating wire is installed inside the heating mechanism 5, and a bolt positioning hole 503 is provided in the internal array of the mold positioning frame 501.

[0024] like Figure 2-3 As shown, in this embodiment, a guide rod 6 is connected between the upper mold frame 1 and the lower mold frame 2, a positioning bolt is connected between the inside of the bolt positioning hole 503 and the lower mold frame 2, the upper mold frame 1 is slidably connected to the guide rod 6, the lower surface of the upper mold frame 1 is installed with an upper mold 3, and the lower mold 4 is installed on the upper surface of the lower mold frame 2 below the upper mold 3. A slot is provided on the upper surface of the lower mold frame 2 below the lower mold 4, and the upper mold 3 is fixedly connected to the upper mold frame 1 by bolts.

[0025] The working principle of the present invention is as follows: by using the clamping groove 201 provided above the lower mold frame 2 for placing the mold positioning frame 501, the lower mold 4 can be installed as a whole above the lower mold frame 2, and then the mold positioning frame 501 can be used to clamp and fix the lower mold 4 by passing the bolts through the bolt positioning holes 503. After the guide groove 502 is provided above the mold positioning frame 501, the heat-conducting splint 504 is installed as a whole above the mold positioning frame 501, and the pressing screw 506 inside the rotating ear plate 507 is used to apply torsional force to control the pressing screw 506 to push the heat-conducting splint 504 to move above the mold positioning frame 501 toward the side surface of the lower mold 4. Then, the heat-conducting splint 504 contacts the side surface of the lower mold 4 as a whole. After the surface is formed, the heating wire 505 is connected to an external power supply, and the heating wire inside the heat-conducting splint 504 is powered and heated. Under the action of heat transfer, the multiple heat-conducting splints 504 on the outside of the lower mold 4 can quickly transfer the heat to the inside of the lower mold 4, which can accelerate the temperature rise efficiency of the lower mold 4. At the same time, when the temperature rises to the specified temperature range, the pressing screw 506 is rotated in the opposite direction. Under the action of the spring, the heat-conducting splint 504 will move away from the side surface of the lower mold 4, disconnecting the heat transfer. After the heat-conducting splint 504 continues to move outward to the outer position of the lower mold frame 2, the upper mold frame 1 is controlled to move downward on the outside of the guide rod 6 as a whole, and the heat-conducting splint 504 will not affect the pressing and forming of the upper mold 3 and the lower mold 4.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold frame for an injection mold with a preheating function, comprising an upper mold frame (1) and a lower mold frame (2), characterized in that: A heating mechanism (5) is provided between the upper mold frame (1) and the lower mold frame (2), and the heating mechanism (5) comprises: a mold positioning frame (501) and a heat-conducting clamping plate (504); a guide groove (502) is provided on the side surface of the mold positioning frame (501); a rotating ear plate (507) is installed on the upper surface of one end of the mold positioning frame (501); a pressing screw (506) is installed inside the rotating ear plate (507); a clamping groove (201) is provided on the upper surface of the lower mold frame (2) below the mold positioning frame (501); a heating wire (505) is connected to the side surface of the heat-conducting clamping plate (504); and a heating wire is installed inside the heating mechanism (5).

2. The mold base for an injection mold with a preheating function according to claim 1, characterized in that: The internal array of the mold positioning frame (501) is provided with bolt positioning holes (503).

3. The mold base for an injection mold with a preheating function according to claim 1, characterized in that: A guide rod (6) is connected between the upper mold frame (1) and the lower mold frame (2); an upper mold (3) is installed on the lower surface of the upper mold frame (1); and a lower mold (4) is installed on the upper surface of the lower mold frame (2) below the upper mold frame (3).

4. The mold base for an injection mold with a preheating function according to claim 1, characterized in that: The mold positioning frame (501) is slidably connected to the clamping groove (201), and a limiting slider is provided on the lower surface of the heat-conducting clamping plate (504) located inside the guide groove (502).

5. The mold base for an injection mold with a preheating function according to claim 1, characterized in that: The pressing screw (506) is engaged and rotatably connected with the rotating ear plate (507).

6. The mold base for an injection mold with a preheating function according to claim 2, characterized in that: A positioning bolt is connected between the interior of the bolt positioning hole (503) and the lower mold frame (2).

7. The mold base for an injection mold with a preheating function according to claim 1, characterized in that: The rotating ear plate (507) is fixedly connected to the mold positioning frame (501).

8. The mold base for an injection mold with a preheating function according to claim 3, characterized in that: The upper die frame (1) is slidably connected to the guide rod (6), the upper die (3) is fixedly connected to the upper die frame (1) via bolts, and a slot is provided on the upper surface of the lower die frame (2) below the lower die (4).

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