Timing demolding mechanism of die-casting die

Abstract

The utility model provides a timed demolding mechanism of a die-casting die, and belongs to the technical field of die-casting dies. Comprising a movable mold and a fixed mold, the movable mold and the fixed mold are both installed in a die-casting machine through guide rods, the timed demolding mechanism body comprises an ejector rod penetrating through the side face of the movable mold, an ejector plate is fixed to the end of the ejector rod, and a containing groove used for containing the ejector plate is formed in the inner wall of the movable mold. The surface of the ejector rod is movably sleeved with an ejector sleeve. According to the timed demolding mechanism, the timed demolding mechanism body is arranged, the relative length between the ejector sleeve and the ejector rod is changed according to the time for forming molded parts made of different materials and different time for forming the molded parts, so that the demolding time of the molded parts is changed, and the timed demolding effect is achieved; the forming part can be protected and prevented from being damaged, and when the forming time of the forming part is short, the forming part can be quickly demolded, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, and particularly relates to a die-casting mold timing demoulding mechanism. Background Art

[0002] A die-casting mold is a mold used in the die-casting process and is a forming tool for manufacturing metal parts or plastic parts. In the die-casting process, the metal or plastic material is heated to a liquid or semi-solid state and then injected into the mold under high pressure for forming, and finally a part with a specific shape and size is obtained. A die-casting mold usually consists of two parts: a moving mold and a stationary mold. The shape and size of the cavity between the moving mold and the stationary mold match the shape and size of the final part. In the die-casting process, the moving mold and the stationary mold are closed, the metal or plastic material is injected into the mold cavity, and after cooling, the mold is opened and the formed part is taken out. The formed part is demoulded through a demoulding mechanism, and the demoulding mechanism is composed of a ejector rod and a top plate. When the moving mold moves away from the stationary mold, the moving mold drives the ejector rod and the top plate to move. When the ejector rod touches the machine base, the positioning drives the top plate to stop moving, and the moving mold continues to move. At this time, the top plate will eject the formed part from the moving mold to achieve demoulding.

[0003] When the formed part is ejected by the ejector rod and the top plate, since the length of the ejector rod and the moving speed of the moving mold are fixed, the demoulding time through the ejector rod and the top plate is fixed. Due to the different materials of the formed parts, the time required for the formed parts to be formed is different. When the forming of the formed part requires a long time and the demoulding time is not changed, when the top plate ejects the formed part, the formed part has not been completely solidified at this time, and the top plate may damage the formed part. Therefore, the present application provides a die-casting mold timing demoulding mechanism to meet the requirements. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a die-casting mold timing demoulding mechanism to solve the problem that the demoulding time is fixed and the top plate will damage the formed part.

[0005] To solve the above technical problem, the utility model provides the following technical solutions:

[0006] A die-casting mold timing demoulding mechanism, including a moving mold and a stationary mold, both the moving mold and the stationary mold are installed in a die-casting machine through guide rods, and further includes:

[0007] A timing demoulding mechanism body, the timing demoulding mechanism body includes an ejector rod penetrating through the side of the moving mold, a top plate is fixed at the end of the ejector rod, a receiving groove for receiving the top plate is opened on the inner wall of the moving mold, a top sleeve is movably sleeved on the surface of the ejector rod, a fixing bolt is threadedly connected to the surface of the top sleeve, and the end of the fixing bolt abuts against the surface of the ejector rod.

[0008] Preferably, a positioning rod is fixed to the inner wall of the moving die, a positioning groove is formed on the side of the top plate close to the moving die, and the positioning rod is movably inserted into the positioning groove.

[0009] Preferably, the end of the positioning rod is provided with a curved surface, and the shape of the positioning rod is adapted to the shape of the positioning groove of the top plate.

[0010] Preferably, a limiting ring is fixedly sleeved on the surface of the ejector rod, and the limiting ring is slidably connected to the inner wall of the ejector sleeve.

[0011] Preferably, two ejector sleeves are provided, the two ejector sleeves are symmetrically arranged up and down about the middle of the moving die, a connecting rod is connected between the two ejector sleeves, two connecting rods are provided, and the two connecting rods are symmetrically arranged front and back about the middle of the ejector sleeve.

[0012] Preferably, magnetic attraction components are arranged at the ends of the two ejector sleeves. The magnetic attraction components include magnetic blocks arranged at the ends of the ejector sleeves, and iron rings are fixed on the surface of the die-casting machine corresponding to the positions of the magnetic blocks.

[0013] Preferably, an installation sleeve is threadedly sleeved at the end of the ejector sleeve, and the end of the installation sleeve is fixedly connected to the end of the magnetic block.

[0014] Preferably, anti-slip stripes are arranged on the surface of the installation sleeve.

[0015] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0016] In the above solution, by setting the timing demoulding mechanism body, for formed parts of different materials, the time required for the formed parts to be formed is different. According to the length of time, the position of the ejector sleeve on the surface of the ejector rod is changed, so as to change the distance between the ejector sleeve and the side of the moving die, thereby changing the demoulding time of the formed parts and achieving a timing effect. When the forming time of the formed parts is longer, the formed parts can be protected to prevent damage to the formed parts. When the forming time of the formed parts is shorter, the formed parts can be quickly demoulded, thereby improving work efficiency.

[0017] By setting the magnetic attraction component, when the moving die moves towards the fixed die, the magnetic block is still magnetically attracted to the surface of the iron ring at this time. At this time, the top plate remains stationary. After the moving die moves, the top plate will be re-engaged with the inner wall of the moving die, and the top plate will return to the initial state. The magnetic force of the magnetic block plays the role of a return spring, but the service life of the magnetic block is longer, and the replacement of the magnetic block is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the moving mold and the fixed mold in the mold opening state;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the iron ring part;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the main body of the timing demolding mechanism;

[0022] Figure 4 It is a sectional three-dimensional structural schematic diagram of the top sleeve.

[0023] [Reference numerals]

[0024] 1. Moving mold; 2. Fixed mold; 3. Die casting machine; 4. Main body of the timing demolding mechanism; 41. Top plate; 42. Positioning rod; 43. Ejector rod; 44. Top sleeve; 45. Fixing bolt; 46. Limit ring; 47. Connecting rod; 5. Magnetic attraction assembly; 51. Magnet; 52. Installation sleeve; 53. Iron ring.

[0025] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications still fall within the scope of the appended claims. Specific embodiments

[0026] The following describes in detail a die-casting mold timing demolding mechanism provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0027] It should be noted that when referring to "one embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. in the specification, it indicates that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes these specific features, structures or characteristics. In addition, when combining an embodiment to describe a specific feature, structure or characteristic, implementing such a feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0028] Generally, terms can be understood at least in part from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or property in a singular sense, or can be used to describe a combination of features, structures, or properties in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that are not necessarily explicitly described.

[0029] As Figures 1-4 shown, an embodiment of the present utility model provides a die-casting mold timing demoulding mechanism, including a moving mold 1 and a fixed mold 2. Both the moving mold 1 and the fixed mold 2 are installed in a die-casting machine 3 through guide rods. One side of the moving mold 1 away from the fixed mold 2 is fixedly connected to the end of the oil cylinder of the die-casting machine 3. The moving mold 1 can slide on the guide rods of the die-casting machine 3. A material inlet is provided on one side of the fixed mold 2 away from the moving mold 1 for adding raw materials into it. The fixed mold 2 cannot slide on the guide rods of the die-casting machine 3. It further includes:

[0030] A timing demoulding mechanism body 4. The timing demoulding mechanism body 4 includes a ejector rod 43 penetrating through the side of the moving mold 1. A top plate 41 is fixed at the end of the ejector rod 43. A receiving groove for receiving the top plate 41 is provided on the inner wall of the moving mold 1. A top sleeve 44 is movably sleeved on the surface of the ejector rod 43. A fixing bolt 45 is threadedly connected to the surface of the top sleeve 44. The end of the fixing bolt 45 abuts against the surface of the ejector rod 43.

[0031] As Figure 4 shown, in this embodiment, a positioning rod 42 is fixed on the inner wall of the moving mold 1. A positioning groove is provided on one side of the top plate 41 close to the moving mold 1. The positioning rod 42 is movably inserted into the positioning groove. After the positioning rod 42 is inserted into the positioning groove of the top plate 41, the positioning rod 42 can position the top plate 41, prevent deviation after the positioning rod 42 resets, and improve the overall accuracy.

[0032] As Figure 4 shown, in this embodiment, the end of the positioning rod 42 is provided with a curved surface. The shape of the positioning rod 42 is adapted to the shape of the positioning groove of the top plate 41. The area of the end of the curved surface of the positioning rod 42 in contact with the contact surface is relatively small, facilitating the insertion of the positioning rod 42 into the positioning groove of the top plate 41.

[0033] As Figure 4 shown, in this embodiment, a limiting ring 46 is fixedly sleeved on the surface of the ejector rod 43. The limiting ring 46 is slidably connected to the inner wall of the top sleeve 44. The limiting ring 46 can prevent the top sleeve 44 from detaching from the ejector rod 43, making the adjustment of the top sleeve 44 more stable.

[0034] As Figure 3As shown, in the present embodiment, there are two top sleeves 44, which are symmetrically arranged up and down about the middle of the movable mold 1, and a connecting rod 47 is connected between the two top sleeves 44. There are two connecting rods 47, which are symmetrically arranged front and back about the middle of the top sleeves 44. The connecting rod 47 connects the two top sleeves 44. After the connection, it can be ensured that the two top sleeves 44 move the same distance, and the connecting rod 47 can also serve as a handle, and it is more convenient to move the top sleeves 44 through the connecting rod 47.

[0035] like Figures 1-4 As shown, in this embodiment, the ends of the two top sleeves 44 are each provided with a magnetic attraction component 5, and the magnetic attraction component 5 includes a magnetic block 51 arranged at the end of the top sleeve 44, and the magnetic block 51 can be magnetically attracted to the surface of the iron ring 53. The iron ring 53 and the die-casting machine 3 can be fixed by welding, or by bolts, etc., and an iron ring 53 is fixed on the surface of the die-casting machine 3 at the position corresponding to the magnetic block 51.

[0036] like Figure 3 and Figure 4 As shown, in this embodiment, the end of the top sleeve 44 is threadedly sleeved with a mounting sleeve 52, and the magnetic block 51 is installed through the mounting sleeve 52. After the magnetic block 51 is installed, it is necessary to ensure that the ends of the magnetic block 51 are in the same vertical plane. When the upper and lower magnetic blocks 51 wear differently, the position of the magnetic block 51 can be changed to ensure that the magnetic block 51 is aligned and the stability during use is ensured. The end of the mounting sleeve 52 is fixedly connected to the end of the magnetic block 51.

[0037] like Figure 3 As shown, in this embodiment, the surface of the mounting sleeve 52 is provided with anti-skid stripes, and the anti-skid stripes increase the friction between the mounting sleeve 52 and the hand to prevent the hand from slipping when the mounting sleeve 52 is rotated.

[0038] Working principle: according to the time required for molding, adjust the position of the top sleeve 44 on the top rod 43. After the adjustment is completed, tighten the fixing bolt 45, and then screw the installation sleeve 52 on the end of the top sleeve 44, and ensure that the ends of the upper and lower magnetic blocks 51 are in the same vertical plane;

[0039] When die casting is performed, the oil cylinder in the die casting machine 3 drives the movable mold 1 to move toward the fixed mold 2. After the movable mold 1 and the fixed mold 2 are closed, the material of the molded part is added from the side of the fixed mold 2 into the cavity of the fixed mold 2 and the movable mold 1. After the molded part is approximately formed, the oil cylinder is started to open the mold, and at this time, the fixed mold 2 is away from the fixed mold 2.

[0040] At this time, the moving mold 1 drives the main body 4 of the timing demoulding mechanism to move. When the magnetic block 51 contacts the iron ring 53, the magnetic block 51 is magnetically attracted to the surface of the iron ring 53. At this time, the magnetic block 51 drives the mounting sleeve 52 to be fixed, the mounting sleeve 52 drives the top sleeve 44 to be fixed, the top sleeve 44 drives the ejector rod 43 to be fixed, and the ejector rod 43 drives the top plate 41 to be fixed. Then, the moving mold 1 is moved continuously, and the fixed top plate 41 will push the molded part outwards from the inner wall of the moving mold 1 to realize the timing demoulding of the molded part.

[0041] After the timing demoulding of the molded part is completed, the oil cylinder is started again. The oil cylinder drives the moving mold 1 to move towards the fixed mold 2. At this time, the moving mold 1 approaches the fixed top plate 41. When the top plate 41 is clamped inside the moving mold 1, the moving mold 1 will drive the top plate 41 to move, the top plate 41 will drive the ejector rod 43 to move, and the ejector rod 43 mechanism will separate the magnetic block 51 from the iron ring 53 through the top sleeve 44 and the mounting sleeve 52. Then, the moving mold 1 and the fixed mold 2 are closed and can be used continuously.

[0042] The present utility model covers any alternatives, modifications, equivalent methods and solutions made on the essence and scope of the present utility model. In order to enable the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model without the description of these details.

[0043] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A die-casting mold timing demoulding mechanism, comprising a movable mold (1) and a fixed mold (2), wherein the movable mold (1) and the fixed mold (2) are both installed in a die-casting machine (3) through a guide rod, characterized in that: Also includes: The timing demoulding mechanism body (4) comprises a push rod (43) penetrating the side of the movable mold (1), a push plate (41) being fixed to the end of the push rod (43), a receiving groove for receiving the push plate (41) being provided on the inner wall of the movable mold (1), a push sleeve (44) being movably sleeved on the surface of the push rod (43), a fixing bolt (45) being threadedly connected on the surface of the top sleeve (44), and an end of the fixing bolt (45) being against the surface of the push rod (43).

2. The die-casting mold timing demoulding mechanism according to claim 1, characterized in that: A positioning rod (42) is fixed on the inner wall of the movable mold (1), and a positioning groove is provided on the side of the top plate (41) close to the movable mold (1), and the positioning rod (42) is movably inserted in the positioning groove.

3. The die-casting mold timing demoulding mechanism according to claim 2, characterized in that: The end of the positioning rod (42) is arranged as a curved surface, and the shape of the positioning rod (42) is matched with the shape of the positioning groove of the top plate (41).

4. The die-casting mold timing demoulding mechanism according to claim 1, characterized in that: A limiting ring (46) is fixedly sleeved on the surface of the push rod (43), and the limiting ring (46) is slidably connected to the inner wall of the top sleeve (44).

5. The die-casting mold timing demoulding mechanism according to claim 1, characterized in that: There are two top sleeves (44) in total, and the two top sleeves (44) are symmetrically arranged up and down about the middle of the movable mold (1). A connecting rod (47) is connected between the two top sleeves (44). There are two connecting rods (47) in total, and the two connecting rods (47) are symmetrically arranged front and back about the middle of the top sleeves (44).

6. The die-casting mold timing demoulding mechanism according to claim 5, characterized in that: The ends of the two top sleeves (44) are both provided with a magnetic attraction component (5), the magnetic attraction component (5) comprising a magnetic block (51) arranged at the end of the top sleeve (44), and an iron ring (53) is fixed at a position corresponding to the magnetic block (51) on the surface of the die-casting machine (3).

7. The die-casting mold timing demoulding mechanism according to claim 6, characterized in that: The end of the top sleeve (44) is threadedly sleeved with a mounting sleeve (52), and the end of the mounting sleeve (52) is fixedly connected to the end of the magnetic block (51).

8. The die-casting mold timing demoulding mechanism according to claim 7, characterized in that: The surface of the mounting sleeve (52) is provided with anti-slip stripes.

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