Reinforced mold ejector pin

Abstract

The utility model discloses a reinforced mould ejector pin, which relates to the technical field of moulds and comprises a countersunk head, the ejector rod is fixedly mounted at one end of the countersunk head, and the diameter of the ejector rod is smaller than that of the countersunk head; the protective sleeve is connected to the surface of the ejector rod through an external thread arranged on the surface of the ejector rod; the second spring is partially mounted on the other side of the interior of the countersunk head in a protruding manner; according to the utility model, through the arrangement of the springs and the shock pads, when the ejector pin is impacted or vibrated in the working process, the shock pads and the springs can absorb a part of impact force and disperse the impact force to the surrounding environment, so that the impact load of the ejector pin is reduced, and the service life of the ejector pin is prolonged. And the shock pad and the spring can provide a certain buffering effect, so that the ejector pin of the mold is more stable in the working process, the shaking and resonance phenomena of the ejector pin can be reduced, the normal operation state of the ejector pin is kept, and the working precision and stability of the mold are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a reinforced mold ejector pin. Background Art

[0002] The mold ejector is a tool used to separate the molded product from the mold. It is usually axially installed on the upper mold or the lower mold and adopts a pin arrangement method. The mold ejector is made of an integral countersunk head and a coaxial ejector rod. The countersunk head and the ejector rod are cylindrical, and the upper end of the countersunk head and the lower end of the ejector rod are flat. When the product needs to be ejected from the mold, the countersunk head is pressurized and pushes the ejector rod to extend. The end face of the ejector rod generates an ejection force on the product, thereby ejecting the product.

[0003] Referring to the existing patent announcement number: CN203994357U, a reinforced mold ejector includes a countersunk head and an ejector rod, the countersunk head and the ejector rod are coaxially arranged, the ejector rod is made on the lower end surface of the countersunk head, and an alloy column is coaxially embedded in the ejector rod and the countersunk head. The alloy column is in the form of an alloy prism, and the alloy prism is a triangular prism, a quadrangular prism or a pentagonal prism, thereby greatly enhancing the strength and rigidity of the ejector pin, thereby ensuring that the mold ejector pin enters the mold mounting hole and extends vertically, avoiding the problem of ejector rod deflection and skewing caused by force, and ensuring that the ejector rod is vertically installed in the product.

[0004] However, in the above technical solution, since the ejector pin itself is susceptible to greater vibration and impact force when ejecting the product during movement when used in the mold, the use effect of the ejector pin is affected; at the same time, since the ejector pin is long and has a small diameter, its rigidity is poor during operation, and it is easy to deform or even break under high force, which affects the service life of the ejector pin. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a reinforced mold ejector pin.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A reinforced mold ejector pin comprises: a countersunk head;

[0008] A push rod, which is fixedly mounted on one end of the countersunk head and has a diameter smaller than that of the countersunk head;

[0009] A protective sleeve connected to the surface of the push rod through an external thread provided on the surface of the push rod;

[0010] A second spring, which is partially protruding and installed on the other side of the interior of the countersunk head;

[0011] A shock-absorbing pad is installed on one end of the second spring.

[0012] The utility model is further configured that the countersunk head also includes:

[0013] A first spring mounted on one end of the countersunk head;

[0014] The first spring is located outside the push rod, and the other end of the first spring is in contact with the protective sleeve.

[0015] The utility model is further configured that the countersunk head also includes:

[0016] A groove is formed at the other end of the countersunk head;

[0017] The diameter of the groove is greater than the diameter of the second spring, the second spring is located inside the groove, and the shock-absorbing pad is matched with the groove.

[0018] The utility model is further configured that the top rod also includes:

[0019] A coating, which is evenly coated on the outer surface of the mandrel;

[0020] A reinforcing rod is fixedly installed inside the top rod.

[0021] The utility model is further configured that the coating is made of anti-corrosion material or metal material, and the reinforcing rod is made of steel material.

[0022] The utility model is further configured that the inner side of the protective sleeve is provided with an internal thread matching the external thread.

[0023] The utility model is further configured such that the length of the protective sleeve is greater than the length of the ejector rod.

[0024] Compared with the prior art, the utility model has at least the following beneficial effects:

[0025] 1. The reinforced mold ejector is provided with a first spring, a groove, a second spring and a shock-absorbing pad. The spring and the shock-absorbing pad are placed in the groove formed by the countersunk head. When the ejector is impacted or vibrated during operation, the shock-absorbing pad and the spring can absorb a part of the impact force and disperse it into the surrounding environment, thereby reducing the impact load of the ejector and reducing the risk of damage to the mold and equipment due to the impact. The shock-absorbing pad and the spring can provide a certain buffering effect, making the mold ejector more stable during operation. They can reduce the jitter and resonance of the ejector, maintain the normal operation of the ejector, and improve the working accuracy and stability of the mold.

[0026] 2. The reinforced mold ejector pin is provided with a protective sleeve and an external thread. When in use, the ejector pin can be connected to the protective sleeve on its surface through the external thread, so that the overall rigidity of the ejector pin can be improved through the protective sleeve, and the stress deformation or even breakage thereof can be reduced. The connection length of the protective sleeve can also be adjusted according to the thread provided thereon to adjust the use length of the ejector pin. At the same time, the protective sleeve can effectively protect the surface thread of the ejector pin from corrosion and wear in the external environment, and also facilitates the maintenance and replacement of the ejector pin. When the ejector pin needs to be replaced, only the protective sleeve needs to be disassembled without causing damage or affecting other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a reinforced mold ejector proposed by the utility model;

[0028] Figure 2 This is a schematic diagram of the overall structure of the other side of a reinforced mold ejector proposed by the utility model;

[0029] Figure 3 This is a schematic diagram of the overall split structure of a reinforced mold ejector proposed by the utility model;

[0030] Figure 4 The utility model is a schematic diagram of the ejector rod structure of a reinforced mold ejector pin.

[0031] In the figure: 1. countersunk head; 2. push rod; 3. first spring; 4. protective cover; 5. shock-absorbing pad; 6. groove; 7. second spring; 8. coating; 9. reinforcing rod; 10. external thread. DETAILED DESCRIPTION

[0032] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0035] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0036] Reference Figure 1-4 , a reinforced mold ejector, comprising: a countersunk head 1; an ejector rod 2, which is fixedly mounted on one end of the countersunk head 1 and has a diameter smaller than that of the countersunk head 1, so that when the ejector is installed, the position of the countersunk head 1 can be fixed, and the ejector rod 2 is used as a part in contact with a workpiece to lift the workpiece; a protective sleeve 4, which is connected to the surface of the ejector rod 2 through an external thread 10 provided on the surface of the ejector rod 2, and the protective sleeve 4 can improve the overall rigidity of the ejector, reduce the deformation or even breakage of the ejector under stress, and improve the service life of the ejector. At the same time, the protective sleeve 4 can effectively protect the surface thread of the ejector rod from corrosion and wear in the external environment; a second spring 7, which is partially protruding and mounted on the other side of the inside of the countersunk head 1; a shock-absorbing pad 5, which is mounted on one end of the second spring 7, so that the shock-absorbing pad 5 is installed through the second spring 7, so that when the ejector is installed in the mold, the ejector can be supported by the second spring 7 and the shock-absorbing pad 5, so as to reduce the impact force when the mold ejector contacts the workpiece, reduce the wear of the ejector and the workpiece surface, and improve the service life of the mold.

[0037] Reference Figure 1-3 The countersunk head 1 also includes: a first spring 3, which is installed at one end of the countersunk head 1; the first spring 3 is located on the outside of the ejector pin 2, and the other end of the first spring 3 is in contact with the protective sleeve 4, so that when the protective sleeve 4 is connected to the surface of the ejector pin 2, the first spring 3 can also buffer the vibration of the ejector pin as a whole, reduce the vibration and resonance of the ejector pin of the mold during operation, and improve the use effect of the ejector pin.

[0038] Reference Figure 3 The countersunk head 1 also includes: a groove 6, which is opened at the other end of the countersunk head 1; the diameter of the groove 6 is larger than the diameter of the second spring 7, the second spring 7 is located on the inner side of the groove 6, and the shock-absorbing pad 5 is adapted to the groove 6, so that when the ejector pin is installed, the shock-absorbing pad 5 and the second spring 7 can be received in the groove 6 to reduce the space occupied by them and avoid interference with the installation of the ejector pin. At the same time, the horizontal plane of the shock-absorbing pad 5 protrudes from the horizontal plane of the countersunk head 1, so as to improve the buffering effect of the second spring 7 and the shock-absorbing pad 7.

[0039] Reference Figure 4The ejector pin 2 further includes: a coating 8, which is evenly coated on the outer surface of the ejector pin 2; a reinforcing rod 9, which is fixedly installed inside the ejector pin 2. The coating 8 is made of anti-corrosion material or metal material. Chromium, nickel, silver, etc. can provide good corrosion resistance. The metal coating can form a metal protective layer on the surface of the mold ejector pin by electroplating, spraying, etc., which can provide good thermal conductivity. The reinforcing rod 9 is made of steel. The reinforcing rod 9 can be made of SKD61 hot working die steel, which has excellent heat resistance and fatigue resistance to ensure that it has sufficient hardness, wear resistance and strength. The inner side of the protective sleeve 4 is provided with an internal thread matching the external thread 10, which facilitates the maintenance and replacement of the ejector pin. When the ejector pin 2 needs to be replaced, only the protective sleeve 4 needs to be disassembled without causing damage or impact on other components.

[0040] Reference Figure 1-3 , the length of the protective sleeve 4 is greater than the length of the ejector rod 2; the connection length of the protective sleeve 4 can also be adjusted according to the thread set thereon to adjust the use length of the ejector pin, thereby avoiding the ejector pin being of a relatively single form, thereby improving the applicability of the ejector pin.

[0041] Working principle: When using the utility model, the ejector pin is first installed in the mold, and then the spring and the shock-absorbing pad 5 are placed in the groove opened by the countersunk head, so that when the ejector pin is impacted or vibrated during operation, the shock-absorbing pad 5 and the spring can absorb part of the impact force and disperse it into the surrounding environment, thereby reducing the impact load of the ejector pin and reducing the risk of damage to the mold and equipment caused by the impact. The shock-absorbing pad 5 and the spring can provide a certain buffering effect, making the mold ejector pin more stable during operation. They can reduce the jitter and resonance of the ejector pin, maintain the normal operation of the ejector pin, and improve the working accuracy of the mold. The present invention has the advantages of high rigidity and stability, and the ejector pin can be connected to the protective sleeve through the external thread 10 on its surface when in use, so that the overall rigidity of the ejector pin can be improved through the action of the protective sleeve 4, and the deformation or even breakage thereof due to stress can be reduced, and the connection length of the protective sleeve 4 can also be adjusted according to the thread set thereon to adjust the use length of the ejector pin. At the same time, the protective sleeve 4 can effectively protect the surface thread of the ejector pin 2 from corrosion and wear in the external environment, and also facilitates the maintenance and replacement of the ejector pin. When the ejector pin 2 needs to be replaced, it is only necessary to disassemble the protective sleeve 4 without causing damage or affecting other components.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reinforced mold ejector pin, characterized in that: include: Countersunk head (1); A push rod (2) which is fixedly mounted on one end of the countersunk head (1) and has a diameter smaller than that of the countersunk head (1); A protective sleeve (4) connected to the surface of the push rod (2) via an external thread (10) provided on the surface of the push rod (2); A second spring (7) which is partially protruding and installed on the other side of the interior of the countersunk head (1); A shock-absorbing pad (5) is mounted on one end of the second spring (7).

2. A reinforced mold ejector pin according to claim 1, characterized in that: The countersunk head (1) further comprises: A first spring (3) mounted on one end of the countersunk head (1); The first spring (3) is located outside the push rod (2), and the other end of the first spring (3) is in contact with the protective sleeve (4).

3. A reinforced mold ejector pin according to claim 1, characterized in that: The countersunk head (1) further comprises: A groove (6) is formed at the other end of the countersunk head (1); The diameter of the groove (6) is greater than the diameter of the second spring (7), the second spring (7) is located inside the groove (6), and the shock-absorbing pad (5) is matched with the groove (6).

4. The reinforced mold ejector pin according to claim 1, characterized in that: The top rod (2) also includes: A coating (8) uniformly coated on the outer surface of the push rod (2); A reinforcing rod (9) is fixedly mounted inside the top rod (2).

5. The reinforced mold ejector pin according to claim 4, characterized in that: The coating (8) is made of an anti-corrosion material or a metal material, and the reinforcing rod (9) is made of steel.

6. The reinforced mold ejector pin according to claim 1, characterized in that: The inner side of the protective sleeve (4) is provided with an internal thread matching the external thread (10).

7. The reinforced mold ejector pin according to claim 1, characterized in that: The length of the protective sleeve (4) is greater than the length of the push rod (2).

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