Front and rear mold ejection mold frame

Abstract

The utility model provides a front and rear mold ejection mold frame, and relates to the technical field of injection mold frames, the front and rear mold ejection mold frame comprises a first ejection piece, a second ejection piece, a mold A and a mold B. Air leakage holes are formed in the two ends of the mold A and the mold B. The first ejection piece and the mold A are used in a combined mode and are opposite in orientation. The first ejection piece and the second ejection piece each comprise a supporting seat and two limiting seats, the interiors of the two limiting seats are slidably connected with the same regulation and control plate, a control strip is hinged to the middle of the regulation and control plate, and a second plate seat is assembled and connected to one side of one limiting seat; according to the technical key points, the control strip is controlled to rotate around the hinged point of the control strip and the regulation and control plate, the regulation and control plate can be controlled to move towards the supporting seat in the two limiting seats by means of supporting of the second plate seat and based on the lever principle, one end of the regulation and control plate can be controlled to relieve blocking of the air leakage hole, resistance is reduced, and the safety is improved. Meanwhile, one end of the regulation and control plate is controlled to apply pressure to the supporting seat, so that the mold A and the mold B are far away from each other, and demolding work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold frames, in particular to a front and rear mold ejection mold frame. Background Art

[0002] The die frame is the support of the die. For example, the part that combines and fixes the various parts of the die according to a certain rule and position on the die-casting machine and enables the die to be installed on the die-casting machine is called the die frame. The die frame consists of an ejection mechanism, a guide mechanism, a pre-reset mechanism, a die foot pad, and a seat plate.

[0003] The mold frame is a semi-finished product of the mold, which is composed of various steel plates and parts. It can be said to be the skeleton of the entire mold. The mold frame has a pre-forming device, a positioning device and an ejector device. It is generally configured as a panel, A plate (front template), B plate (back template), C plate (square iron), bottom plate, ejector panel, ejector bottom plate, as well as guide pillars, return pins and other spare parts.

[0004] The patent document with publication number CN218838536U discloses a front and rear ejection injection mold frame which utilizes two first insertion rings, two second insertion rings, two lifting bars, four insertion plates and an adjustment bar. The adjustment bar and the two lifting bars drive the four insertion plates to move in and out of the first insertion rings and the second insertion rings, so that when the front mold assembly is separated from the rear mold assembly, the front ejection plate is ensured to remain stationary, thereby realizing the front ejection movement. The front ejection work can be performed without adding an ejection cylinder, thereby reducing the cost of the front and rear ejection injection mold.

[0005] However, in the process of implementing the above technical solution, it is found that the above technical solution has the following technical problems:

[0006] The existing front and rear ejection injection mold frame can perform front ejection work and complete demoulding work by utilizing two first insertion rings, two second insertion rings, two lifting bars, four insertion plates and adjustment bars, without adding an ejection cylinder. However, in actual application, since the product obtained by injection molding is closely attached to the cavity wall inside the mold, it is necessary to overcome greater resistance during the demoulding process, so while saving costs, it brings certain troubles to the operation. Utility Model Content

[0007] In order to overcome the technical problem that the existing front and rear ejection injection mold frame needs to overcome greater resistance during demoulding because the product obtained by injection molding is closely attached to the cavity wall inside the mold, the technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0008] A front and rear mold ejection mold frame includes a first ejection piece and a second ejection piece, wherein two first ejection pieces are provided;

[0009] There are two second ejection members, which are respectively located on one side of the two first ejection members;

[0010] Among them, a mold A is arranged between the two first ejectors, and a mold B is arranged between the two second ejectors. Both ends of the mold A and the mold B are processed with air venting holes inside. The first ejector and the mold A are used in combination and face opposite directions. The first ejector and the second ejector each include a support seat and two limit seats. The two limit seats are internally slidably connected with the same regulating plate. The interior of the air venting hole is connected with the cavity wall of the mold A and the mold B. One end of the regulating plate blocks the air venting hole. A control strip is hinged in the middle of the regulating plate. One side of one of the limit seats is assembled and connected with a second plate seat.

[0011] In a possible implementation, one of the support seats and the two limit seats are respectively fixed to the surfaces of the first ejector and the mold A, and the control strip rotates around the hinge point between it and the regulating plate, and is supported by the second plate seat to control one end of the regulating plate to move toward the support seat.

[0012] In a possible implementation, the surface of the second plate seat is processed into a curved surface, and the control strip is slidably connected to the second plate seat via the curved surface.

[0013] In a possible implementation, a surface of one end of the control strip is processed with a bevel, and a gap is left between the control strip and the surfaces of mold B and mold A through the bevel. The bevel on the control strip is located at the connection point between mold B and mold A.

[0014] In a possible implementation, a receiving slot is processed inside one end of the regulating plate, the thickness of the regulating plate is greater than the thickness of the control strip, and the control strip is received inside the receiving slot.

[0015] In one possible implementation, a first plate seat is fixedly assembled on one side of one of the limit seats, and two springs are connected between the two ends of the first plate seat and the surface of one end of the regulating plate. The connection point between the spring and the regulating plate is located between the two limit seats. The spring pulls the regulating plate to slide inside the two limit seats and makes one end of the regulating plate cover the air vent hole.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects:

[0017] 1. In this scheme, by controlling the control strip to rotate around the hinge point between the control strip and the control plate, with the support of the second plate seat and based on the lever principle, the control plate can be controlled to move toward the support seat inside the two limit seats. When one end of the control plate is controlled to release the blockage of the air vent, one end of the control plate can be synchronously controlled to apply pressure to the support seat, so that mold A and mold B are separated from each other, which is convenient for air to enter the mold cavity from the air vent to balance the pressure inside and outside the mold cavity. The resistance is small, which is conducive to controlling the demoulding work to be carried out efficiently.

[0018] 2. In this solution, two springs are arranged between the surface in the middle of the regulating plate and the first plate seat. When the regulating plate is controlled to slide inside the two limit seats by the control strip, the two springs can be stretched by the regulating plate. When the control strip is released and the regulating plate is free of external force, the springs are contracted and reset, and the regulating plate is pulled to cover the air vent hole, thereby ensuring that the mold cavity environment between mold A and mold B meets actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 The enlarged schematic diagram of the middle A part;

[0021] Figure 3 It is the front view of the utility model;

[0022] Figure 4 It is a left view of the first ejector of the utility model in the working state.

[0023] Description of the drawings: 1. First ejector; 101. Support seat; 102. Spring; 103. Control strip; 104. Control plate; 105. First plate seat; 106. Limit seat; 107. Second plate seat; 2. Mold A; 3. Mold B; 4. Second ejector; 5. Storage slot; 6. Air vent. DETAILED DESCRIPTION

[0024] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0025] Embodiment 1:

[0026] This embodiment introduces a specific structure of a front and rear mold ejection mold frame. Figure 1-Figure 4 As shown, it includes two first ejectors 1 and two second ejectors 4 respectively located on one side of the two first ejectors 1, a mold A2 is arranged between the two first ejectors 1, a mold B3 is arranged between the two second ejectors 4, both ends of the mold A2 and the mold B3 are processed with air venting holes 6 inside, the first ejector 1 and the second ejector 4 each include a support seat 101 and two limit seats 106, the two limit seats 106 are internally slidably connected with the same regulating plate 104, the middle part of the regulating plate 104 is hinged with a control strip 103, and one side of a limit seat 106 is assembled and connected with a second plate seat 107;

[0027] The first ejector 1 and the mold A2 are used in combination and face oppositely. By making the inside of the vent hole 6 communicate with the cavity wall of the mold A2 and the mold B3, after the vent hole 6 is blocked by one end of the regulating plate 104, the existing mold cavity for molding the product between the first ejector 1 and the mold A2 can be sealed.

[0028] At the same time, by machining and fixing a support seat 101 and two limit seats 106 to the surfaces of the first ejector 1 and the mold A2 respectively, when the control bar 103 rotates around the hinge point between the control bar 103 and the control plate 104, and through the support of the second plate seat 107, with the help of the lever principle, one end of the control plate 104 is controlled to move toward the support seat 101. In this state, one end of the control plate 104 releases the blockage of the air vent 6. When the mold A2 and the mold B3 are controlled to move away from each other, air can be introduced into the mold cavity through the air vent 6 to balance the pressure inside and outside the mold cavity, which facilitates the disconnection of the mold A2 and the mold B3.

[0029] In addition, when the regulating plate 104 is supported on the surface of the support seat 101, the regulating plate 104 can be controlled to move by means of the control strip 103, so as to push the support seat 101 away from the regulating plate 104. Since the second plate seat 107 supported on the control strip 103 is fixed by the limit seat 106, the mold A2 and the mold B3 can be moved away from each other.

[0030] Secondly, in order to ensure that the control strip 103 is supported on the second plate seat 107, the control plate 104 can slide smoothly inside the limit seat 106. Figure 2 As shown, the surface of the second plate seat 107 is processed into a curved surface, through which, when the control strip 103 pushes the regulating plate 104 to slide inside the limit seat 106, the control strip 103 can slide on the curved surface, thereby reducing the resistance of the control strip 103 to control the movement of the regulating plate 104;

[0031] Furthermore, in order to facilitate the control, the control bar 103 is supported by the second plate seat 107, and the control regulating plate 104 slides inside the limit seat 106, such as Figure 2 and Figure 4 As shown, the surface of one end of the control strip 103 is processed with an inclined surface, and a gap is left between the inclined surface and the surfaces of the mold B3 and the mold A2, so that the inclined surface on the control strip 103 is located at the connection point of the mold B3 and the mold A2, so that one end of the control strip 103 is conveniently controlled to rotate around the hinge point between the control strip 103 and the regulating plate 104, thereby controlling the regulating plate 104 to slide between the two limit seats 106;

[0032] Furthermore, in order to improve the flexibility of the control strip 103 rotating around the hinge point between the control strip 103 and the control plate 104 and supporting the second plate seat 107, the control plate 104 can be controlled. Figure 2As shown, a receiving slot 5 is processed inside one end of the regulating plate 104. By making the thickness of the regulating plate 104 greater than the thickness of the control strip 103, when the control strip 103 is received inside the receiving slot 5, the control strip 103 can be made to rock on the inner side of the limit seat 106, so that when the regulating plate 104 is controlled to slide inside the limit seat 106, the control strip 103 can be kept tilted, which is beneficial for the control strip 103 and the second plate seat 107 to cooperate with each other to control the sliding of the regulating plate 104 inside the limit seat 106 by means of the lever principle.

[0033] Embodiment 2:

[0034] This embodiment introduces a specific structure of a front and rear mold ejection mold frame 104 based on Embodiment 1. Figure 1-Figure 4 As shown, a first plate seat 105 is fixedly mounted on one side of a limit seat 106, and two springs 102 are connected between the two ends of the first plate seat 105 and the surface of one end of the regulating plate 104;

[0035] Among them, by making the connection point between the spring 102 and the regulating plate 104 located between the two limit seats 106, when the control strip 103 is used to control the regulating plate 104 to slide inside the two limit seats 106, the spring 102 is stretched. When the control of the control strip 103 is released and the regulating plate 104 is in a natural state, the spring 102 contracts and resets, and pulls the regulating plate 104 to slide inside the two limit seats 106, which is beneficial to control one end of the regulating plate 104 to cover the air vent 6, thereby ensuring that the mold cavity environment between the mold A2 and the mold B3 meets actual needs.

[0036] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A front and rear mold ejection mold frame, It is characterized in that include: The first ejector, which is provided with two; Two second ejectors are provided and are respectively located on one side of the two first ejectors; A mold A is disposed between the two first ejectors, a mold B is disposed between the two second ejectors, air vents are processed inside both ends of the mold A and the mold B, and the first ejector and the mold A are used in combination and face opposite directions; The first ejector and the second ejector each include a support seat and two limit seats, the two limit seats are internally slidably connected with the same regulating plate, the interior of the air leakage hole is connected with the cavity wall of mold A and mold B, one end of the regulating plate blocks the air leakage hole, a control strip is hinged in the middle of the regulating plate, and one side of one of the limit seats is assembled and connected with a second plate seat.

2. A front and rear mold ejection mold frame as claimed in claim 1, Features: One of the support seats and two limit seats are fixed to the surfaces of the first ejector and the mold A respectively. The control strip rotates around the hinge point between it and the regulating plate and is supported by the second plate seat to control one end of the regulating plate to move toward the support seat.

3. A front and rear mold ejection mold frame as claimed in claim 1, Features: The surface of the second plate seat is processed into a curved surface, and the control strip is slidably connected with the second plate seat through the curved surface.

4. A front and rear mold ejection mold frame as claimed in claim 1, Features: The surface of one end of the control strip is processed with an inclined surface, and a gap is left between the control strip and the surfaces of the mold B and the mold A through the inclined surface; Wherein, the inclined surface on the control strip is located at the connection point between mold B and mold A.

5. A front and rear mold ejection mold frame as claimed in claim 1, Features: A receiving notch is processed inside one end of the regulating plate, the thickness of the regulating plate is greater than the thickness of the control strip, and the control strip is received inside the receiving notch.

6. A front and rear mold ejection mold frame as claimed in claim 1, Features: A first plate seat is fixedly mounted on one side of the limit seat, and two springs are connected between the two ends of the first plate seat and the surface of one end of the regulating plate; The connection point between the spring and the regulating plate is located between the two limit seats, and the spring pulls the regulating plate to slide inside the two limit seats, and makes one end of the regulating plate cover the air leakage hole.

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