Injection rod with long service life

Abstract

The injection rod with the long service life comprises a main rod body and an auxiliary rod body, the auxiliary rod body is detachably installed in the main rod body, the auxiliary rod body is provided with a liquid outlet hole, the main rod body is provided with a liquid inlet hole and an inner cavity, and the liquid inlet hole passes through the inner cavity and the liquid outlet hole; the main rod body comprises a first connecting section, a second connecting section, a third connecting section, a fourth connecting section, an injection head, a first inclined section, a second inclined section, a first flexible section and a second flexible section. The injection rod with the long service life is provided according to the content, and the problems that in the prior art, due to the fact that an injection rod makes contact with high-temperature metal liquid for a long time, the temperature of the injection rod is prone to being too high, the service life of the injection rod is greatly shortened, the injection rod is prone to shaking in the using process, the injection rod is abraded due to friction, and the service life of the injection rod is affected are solved. And the service life is further shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting, in particular to a die-casting rod with a long service life. Background Art

[0002] The shot rod is a mechanical device widely used in engineering and manufacturing, especially in injection molding machines, presses and die casting machines. It is mainly made of metal, has a certain strength and rigidity, and is used to transfer force or pressure to other components or workpieces to achieve specific functions or operations.

[0003] However, the injection rod in the prior art is easily overheated due to long-term contact with high-temperature metal liquid, which greatly reduces its service life. In addition, the injection rod is prone to shaking during use, which causes friction and wear of the injection rod, further reducing its service life. Utility Model Content

[0004] The purpose of the utility model is to provide a long-service life injection rod, which solves the problem that the injection rod in the prior art is easily overheated due to long-term contact with high-temperature metal liquid, which greatly reduces its service life, and the injection rod is prone to shaking during use, which causes friction and wear of the injection rod, further reducing its service life.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A long-life injection rod comprises a main rod body and a secondary rod body, wherein the secondary rod body is detachably mounted inside the main rod body, the secondary rod body is provided with a liquid outlet hole, the main rod body is provided with a liquid inlet hole and an inner cavity, the liquid inlet hole passes through the inner cavity and the liquid outlet hole;

[0007] The main rod body includes a first connecting section, a second connecting section, a third connecting section, a fourth connecting section, a pressure injection head, a first inclined section, a second inclined section, a first flexible section and a second flexible section;

[0008] One end of the first connecting section is connected to the injection head, the other end of the first connecting section is connected to one end of the second connecting section, the other end of the second connecting section is connected to one end of the first flexible section through the first inclined section, the other end of the first flexible section is connected to one end of the third connecting section through the second inclined section, the other end of the third connecting section is connected to one end of the second flexible section through the first inclined section, and the other end of the second flexible section is connected to the fourth connecting section through the second inclined section;

[0009] The first inclined section and the second inclined section have the same structure, and the inclination angles of the first inclined section and the second inclined section are 25-35° respectively. The first flexible section and the second flexible section have the same structure, and the radius of the first flexible section is 92-95% of the radius of the third connecting section. The length of the first flexible section is 8-12% of the length of the main rod body.

[0010] Furthermore, the radius of the second connecting section is 92-95% of the radius of the first connecting section.

[0011] Specifically, the injection head is provided with a chamfer.

[0012] Preferably, the auxiliary rod body comprises a flow guiding rod body, a locking rod body and a liquid outlet rod body;

[0013] One end of the locking rod is connected to the flow guide rod, and the other end of the locking rod is connected to the liquid outlet rod. The locking rod is detachably mounted inside the fourth connecting section. The locking rod is provided with a first channel, one end of the first channel is connected to the inner cavity, and the other end of the first channel is connected to the liquid outlet hole.

[0014] The guide rod body is located in the inner cavity, and the guide rod body is used to guide the cooling liquid in the inner cavity.

[0015] In some embodiments, the guide rod body is provided with a plurality of inclined steps, and the plurality of inclined steps are arranged along the length direction thereof.

[0016] Furthermore, the guide rod body is provided with a guide hole and a second channel, one end of the guide hole is connected to the inner cavity, the other end of the guide hole is connected to one end of the second channel, and the other end of the second channel is connected to the liquid outlet.

[0017] Specifically, the guide holes are arranged obliquely.

[0018] Preferably, it also includes a metal pipe, a hose and a nozzle;

[0019] The metal tube is an L-shaped structure, one end of the metal tube is installed on the liquid inlet, the nozzle is installed on one end of the metal tube, the nozzle is installed on the other end of the metal tube, the nozzle faces the injection head, and the other end of the hose faces away from the injection head.

[0020] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0021] Through the main rod body, the liquid inlet, the inner cavity, the first connecting section, the second connecting section, the third connecting section, the fourth connecting section, the injection head, the first inclined section, the second inclined section, the first flexible section, the second flexible section sub-rod body and the liquid outlet, the main rod body can be quickly cooled to improve its sustainable use, and the inclination angle of the first inclined section and the second inclined section is set to 25-35°, the radius of the first flexible section is 92-95% of the radius of the third connecting section, and the length of the first flexible section is 8-12% of the length of the main rod body, which can not only ensure the strength of the main rod body so that it will not break due to insufficient strength, but also increase the flexibility of the main rod body, solve the stress concentration problem of the main rod body, avoid the phenomenon of rod body shaking, and reduce the wear of the rod body, thereby achieving the effect of increasing the service life of the injection rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a shot rod in one embodiment of the utility model;

[0023] Figure 2 yes Figure 1 A magnified view of point A;

[0024] Figure 3 yes Figure 1 The enlarged view of point B;

[0025] Figure 4 This is a schematic structural diagram of a main rod body of one embodiment of the utility model;

[0026] Figure 5 This is a schematic structural diagram of a metal tube, a hose and a nozzle in one embodiment of the utility model;

[0027] Among them: main rod body 1, liquid inlet hole 101, inner cavity 102, first connecting section 11, second connecting section 12, third connecting section 13, fourth connecting section 14, injection head 15, chamfer 151, first inclined section 16, second inclined section 17, first flexible section 18, second flexible section 19, auxiliary rod body 2, liquid outlet hole 201, guide rod body 21, inclined step 211, guide hole 212, second channel 213, locking rod body 22, first channel 221, liquid outlet rod body 23, metal tube 31, hose 32, nozzle 33. DETAILED DESCRIPTION

[0028] 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.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "inner side", "outer side", "inner end", "outer end", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, which are used to distinguish and describe the features, without distinction of order or importance. In the description of the present utility model, unless otherwise specified, "multiple" means more than two.

[0030] In one embodiment of the present invention, Figure 1-5As shown, a long-life injection rod comprises a main rod body 1 and a sub-rod body 2, wherein the sub-rod body 2 can be detachably mounted inside the main rod body 1, the sub-rod body 2 is provided with a liquid outlet 201, the main rod body 1 is provided with a liquid inlet 101 and an inner cavity 102, the liquid inlet 101 is connected to the liquid outlet 201 through the inner cavity 102; the main rod body 1 comprises a first connecting section 11, a second connecting section 12, a third connecting section 13, a fourth connecting section 14, an injection head 15, a first inclined section 16, a second inclined section 17, a first flexible section 18 and a second flexible section 19; one end of the first connecting section 11 is connected to the injection head 15, the other end of the first connecting section 11 is connected to one end of the second connecting section 12, and the other end of the second connecting section 12 is connected to the injection head 15 through the first inclined section 16 It is connected to one end of the first flexible segment 18, the other end of the first flexible segment 18 is connected to one end of the third connecting segment 13 through the second inclined segment 17, the other end of the third connecting segment 13 is connected to one end of the second flexible segment 19 through the first inclined segment 17, and the other end of the second flexible segment 19 is connected to the fourth connecting segment 14 through the second inclined segment 19; the first inclined segment 16 and the second inclined segment 17 have the same structure, the inclination angle of the first inclined segment 16 and the second inclined segment 17 is 25-35°, the first flexible segment 18 and the second flexible segment 19 have the same structure, the radius of the first flexible segment 18 is 92-95% of the radius of the third connecting segment 13, and the length of the first flexible segment 18 is 8-12% of the length of the main rod body 1.In this embodiment, the second connecting section 12, the third connecting section 13 and the fourth connecting section 14 have the same radius, the injection head 15, the first connecting section 11, the second connecting section 12, the first flexible section 18, the third connecting section 13, the second flexible section 19 and the fourth connecting section 14 are connected in sequence and are an integrated structure. Specifically, the left and right ends of the first flexible section 18 are connected to one end of the second connecting section 12 and the third connecting section 13 through the first inclined section 16 and the second inclined section 17, respectively, and the left and right ends of the second flexible section 19 are connected to the other end of the third connecting section 13 and the fourth connecting section 14 through the first inclined section 16 and the second inclined section 17, respectively. The inclination angle of the first inclined section 16 and the second inclined section 17 is preferably 30°, the radius of the first flexible section 18 is preferably 93.5% of the radius of the third connecting section 13, and the length of the first flexible section 18 is preferably 10% of the length of the main rod body 1. During operation, the coolant enters the interior of the main rod body 1 from the liquid inlet hole 101 of the first connecting section 11, thereby To achieve the purpose of cooling, the coolant is then discharged from the liquid outlet 201 through the connecting cavity 102, which is beneficial to improving the sustainable use of the injection rod; the present application uses the main rod body 1, the liquid inlet 101, the inner cavity 102, the first connecting section 11, the second connecting section 12, the third connecting section 13, the fourth connecting section 14, the injection head 15, the first inclined section 16, the second inclined section 17, the first flexible section 18, the second flexible section 1, the secondary rod body 2 and the liquid outlet 201, so that the main rod body 1 can be quickly cooled, thereby improving its sustainable use, and The inclination angles of the first inclined section 16 and the second inclined section 17 are set to 25-35°, the radius of the first flexible section 18 is 92-95% of the radius of the third connecting section 13, and the length of the first flexible section 18 is 8-12% of the length of the main rod body 1. This can not only ensure the strength of the main rod body 1 so that it will not break due to insufficient strength, but also increase the flexibility of the main rod body 1, solve the stress concentration problem of the main rod body 1, avoid the phenomenon of rod body shaking, and reduce the wear of the rod body, thereby achieving the effect of increasing the service life of the injection rod.

[0031] like Figure 1 and Figure 4 As shown, the radius of the second connecting section 12 is 92-95% of the radius of the first connecting section 11. In this embodiment, the radius of the second connecting section 12 is set to 92-95%, preferably 93.5%, of the radius of the first connecting section 11, so as to ensure the strength of the rod body 1 while further improving the flexibility of the injection rod.

[0032] like Figure 4As shown, the shot head 15 is provided with a chamfer 151. In this embodiment, the chamfer 151 is provided at the front end of the shot head 15, so that the shot head 15 can be easily moved in the shot cylinder, reducing the phenomenon of stopping and jamming.

[0033] like Figure 1-3 As shown, the auxiliary rod body 2 includes a flow guiding rod body 21, a locking rod body 22 and a liquid outlet rod body 23; one end of the locking rod body 22 is connected to the flow guiding rod body 21, and the other end of the locking rod body 22 is connected to the liquid outlet rod body 23, and the locking rod body 22 is detachably installed inside the fourth connecting section 14, and the locking rod body 22 is provided with a first channel 221, one end of the first channel 221 is connected to the inner cavity 102, and the other end of the first channel 221 is connected to the liquid outlet hole 201; the flow guiding rod body 21 is located in the inner cavity 102, and the flow guiding rod body 21 is used to guide the cooling liquid in the inner cavity 102. In this embodiment, the outer circumference of the locking rod body 22 and the inner wall of the fourth connecting section 14 are respectively provided with corresponding threads, and the locking rod body 22 is installed on the fourth connecting section 14 through a threaded connection structure. The locking rod body 22 is provided with four first channels 221, and the four first channels 221 are evenly arranged along the circumferential direction of the locking rod body 22. The flow guide rod body 21, the locking rod body 22 and the liquid outlet rod body 23 are an integrated structure, and the flow guide rod body 21 and the liquid outlet rod body 23 can be removed by disassembling the locking rod body 22. It can be removed for easy maintenance and replacement. Furthermore, the guide rod body 21 is placed inside the inner cavity 102 and occupies most of the space. During operation, the coolant enters the inner cavity 102 from the liquid inlet hole 101. Under the effect of the space occupied by the guide rod body 21, the coolant can quickly contact and absorb heat from the inner wall of the main rod body 1. Then the coolant enters the inside of the liquid outlet rod body 23 from the four first channels 221 and is discharged from the liquid outlet hole 201. It is convenient and quick, and the guide rod body 21 can also guide the coolant to prevent its accumulation.

[0034] like Figure 1-2 As shown, the guide rod body 21 is provided with a plurality of inclined steps 211, and the plurality of inclined steps 211 are arranged along the length direction thereof. In this embodiment, the number of the inclined steps 211 is two, that is, the guide rod body 21 is provided with two inclined steps 211 along its guide direction, and the guide rod body 21 is divided into three sections with different radii by the two inclined steps 211. Specifically, along the guide direction of the guide rod body 21, the radius becomes smaller and smaller. Through the above design, not only can the coolant be guided, so that the coolant flows from the direction of the liquid inlet hole 101 along the liquid outlet hole 201 to prevent the coolant from accumulating, but also the flow speed of the coolant can be increased, which is conducive to increasing the liquid outlet speed.

[0035] like Figure 1-3 As shown, the guide rod body 21 is provided with a guide hole 212 and a second channel 213, one end of the guide hole 212 is connected to the inner cavity 102, the other end of the guide hole 212 is connected to one end of the second channel 213, and the other end of the second channel 213 is connected to the liquid outlet 201. In this embodiment, the second channel 213 is located in the middle of the guide rod body 21, and the plurality of guide holes 212 are evenly distributed along the length direction of the guide rod 21, and two guide holes 212 are provided in each circumferential direction. Through the plurality of guide holes 212 and the second channel 213, the flow velocity of the coolant is further increased, thereby increasing the cooling velocity.

[0036] like Figure 1-2 As shown, the guide hole 212 is tilted. In this embodiment, the guide hole 212 is tilted along the flow direction of the coolant, so as to guide the coolant, avoid the accumulation of the coolant, and further increase the flow speed of the coolant.

[0037] like Figure 5 As shown, it also includes a metal tube 31, a hose 32 and a nozzle 33; the metal tube 31 is an L-shaped structure, one end of the metal tube 31 is installed at the liquid inlet 101, the nozzle 33 is installed at one end of the metal tube 31, and the nozzle 33 is installed at the other end of the metal tube 3, the nozzle 33 faces the injection head 15, and the other end of the hose 32 faces away from the injection head 15. In this embodiment, the metal tube 31 is an L-shaped structure, one end of the metal tube 31 is installed at the liquid inlet 101, and the other end of the metal tube 31 faces away from the injection head 15, so that the hose 32 installed at the other end of the metal tube 31 faces away from the injection head 15, preventing the hose 32 from being too close to the injection head 15 and causing high temperature aging, and after the nozzle 33 is installed at one end of the metal tube 31, the nozzle 33 can face the injection head 15, so that the coolant can first contact with the injection head 15 to cool down.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A shot rod with a long service life, characterized in that: It comprises a main rod body and a sub-rod body, wherein the sub-rod body is detachably mounted inside the main rod body, the sub-rod body is provided with a liquid outlet, the main rod body is provided with a liquid inlet and an inner cavity, and the liquid inlet passes through the inner cavity and the liquid outlet; The main rod body includes a first connecting section, a second connecting section, a third connecting section, a fourth connecting section, a pressure injection head, a first inclined section, a second inclined section, a first flexible section and a second flexible section; One end of the first connecting section is connected to the injection head, the other end of the first connecting section is connected to one end of the second connecting section, the other end of the second connecting section is connected to one end of the first flexible section through the first inclined section, the other end of the first flexible section is connected to one end of the third connecting section through the second inclined section, the other end of the third connecting section is connected to one end of the second flexible section through the first inclined section, and the other end of the second flexible section is connected to the fourth connecting section through the second inclined section; The first inclined section and the second inclined section have the same structure, and the inclination angles of the first inclined section and the second inclined section are 25-35° respectively. The first flexible section and the second flexible section have the same structure, and the radius of the first flexible section is 92-95% of the radius of the third connecting section. The length of the first flexible section is 8-12% of the length of the main rod body.

2. A long-life injection rod according to claim 1, characterized in that: The radius of the second connecting section is 92-95% of the radius of the first connecting section.

3. The injection rod with long service life according to claim 1, characterized in that: The injection head is provided with a chamfer.

4. The injection rod with long service life according to claim 1, characterized in that: The auxiliary rod body comprises a flow guiding rod body, a locking rod body and a liquid outlet rod body; One end of the locking rod is connected to the flow guide rod, and the other end of the locking rod is connected to the liquid outlet rod. The locking rod is detachably mounted inside the fourth connecting section. The locking rod is provided with a first channel, one end of the first channel is connected to the inner cavity, and the other end of the first channel is connected to the liquid outlet hole. The guide rod body is located in the inner cavity, and the guide rod body is used to guide the cooling liquid in the inner cavity.

5. A long-life injection rod according to claim 4, characterized in that: The guide rod body is provided with a plurality of inclined steps, and the plurality of inclined steps are arranged along the length direction thereof.

6. A long-life injection rod according to claim 5, characterized in that: The flow guide rod body is provided with a flow guide hole and a second channel, one end of the flow guide hole is connected to the inner cavity, the other end of the flow guide hole is connected to one end of the second channel, and the other end of the second channel is connected to the liquid outlet.

7. A long-life injection rod according to claim 6, characterized in that: The guide holes are arranged obliquely.

8. The injection rod with long service life according to claim 1, characterized in that: Also includes metal pipes, hoses and nozzles; The metal tube is an L-shaped structure, one end of the metal tube is installed on the liquid inlet, the nozzle is installed on one end of the metal tube, the nozzle is installed on the other end of the metal tube, the nozzle faces the injection head, and the other end of the hose faces away from the injection head.

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