Die extrusion device

Abstract

The utility model discloses a die extrusion device, which belongs to the technical field of die-casting die extrusion, is used for extruding the position of a product on a die-casting die, which is easy to generate air holes, and comprises an extrusion needle, a needle sleeve, an extrusion oil cylinder and a connecting rod, the extrusion needle is partially arranged in the needle sleeve, the needle sleeve is arranged in the die, one end of the connecting rod is connected with the extrusion needle, and the other end of the connecting rod is connected with the extrusion oil cylinder. And the other end of the pressing sleeve is connected to the extrusion oil cylinder. One end of the pressing sleeve is mounted and connected to the mold through the positioning groove. The other end of the pressing sleeve abuts against the extrusion oil cylinder. The first pressing plate is connected to the extrusion oil cylinder and further connected to the mold. According to the die extrusion device, by arranging the pressing plate and the pressing sleeve, replacement can be more convenient and faster, other parts cannot be damaged, meanwhile, one end of the pressing sleeve is connected with the die, the other end of the pressing sleeve abuts against the extrusion oil cylinder to form a clearance with the connecting rod and the extrusion needle, and the contact area with the needle sleeve can be guaranteed; concave pressing of the needle sleeve due to long-term stress is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of die-casting die extrusion, and in particular relates to a die extrusion device. Background Art

[0002] Products on die-casting molds are prone to produce pores. Porosity has always been a complex and difficult to solve problem in automotive aluminum alloy die-castings. Therefore, in order to improve the pores of the products, it is often necessary to add extrusion devices at some pore positions to squeeze out the gas in the product to ensure product quality.

[0003] Since the extrusion device moves the extrusion needle after injection to extrude the product, it is subjected to greater force than the commonly used core-pulling needle and is more susceptible to damage and jamming during the production process. During the maintenance process, since the extrusion needle and the needle sleeve are stuck, the needle must be removed first, and then the fixed first pressure plate of the extrusion needle sleeve must be removed, so that the stuck and stretched extrusion needle and needle sleeve can be replaced. This process often requires a lot of maintenance time. When the jam is serious, the connecting rod and the cylinder may even be pulled during disassembly, causing greater damage to the entire extrusion device. On this basis, it will take more time and cost to repair the extrusion device, resulting in long-term shutdown waiting for molds during the production process. Utility Model Content

[0004] In response to one or more of the above defects or improvement needs of the prior art, the utility model provides a mold extrusion device that can be easily disassembled and assembled, can save maintenance time and maintenance costs, and effectively ensure the delivery of the mold during the production process.

[0005] To achieve the above-mentioned purpose, the utility model provides a mold extrusion device, which is used for extruding the position where the product on the die-casting mold is prone to produce pores, including an extrusion needle, a needle sleeve, an extrusion oil cylinder and a connecting rod, wherein the extrusion needle is partially installed in the needle sleeve, and the needle sleeve is installed in the mold, one end of the connecting rod is connected to the extrusion needle, and the other end is connected to the extrusion oil cylinder, and also includes a pressing sleeve and a first pressing plate;

[0006] The mold is provided with a positioning groove corresponding to the pressing sleeve, and one end of the pressing sleeve is installed and connected to the mold through the positioning groove; the other end of the pressing sleeve abuts against the extrusion cylinder;

[0007] The first pressing plate is installed and connected to the extrusion cylinder, and the first pressing plate is also connected to the mold.

[0008] As a further improvement of the utility model, it further comprises a first connecting member, and the connecting rod is connected to the extrusion cylinder through the first connecting member.

[0009] As a further improvement of the utility model, it also includes a second connecting member, and the first pressing plate is connected to the extrusion cylinder through the second connecting member.

[0010] As a further improvement of the present invention, the second connecting member adopts a hexagon socket screw.

[0011] As a further improvement of the utility model, it also includes a third connecting member, and the first pressing plate is connected to the mold through the third connecting member.

[0012] As a further improvement of the present invention, the third connecting member is a hexagon socket screw.

[0013] As a further improvement of the present invention, the gap between the positioning groove and the pressing sleeve is 0.5-1 mm on one side.

[0014] As a further improvement of the present invention, a mounting member is provided between the first pressing plate and the extrusion cylinder.

[0015] As a further improvement of the present invention, the mounting member adopts an internal thread screw.

[0016] As a further improvement of the present invention, a mounting groove is provided on the connecting rod, and the extrusion needle is installed and connected to the connecting rod through the mounting groove.

[0017] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0018] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0019] (1) The mold extrusion device of the utility model is provided with a pressing plate and a pressing sleeve, so that replacement can be more convenient and quick without damaging other parts. At the same time, one end of the pressing sleeve is connected to the mold and the other end is abutted against the extrusion cylinder to form a gap with the connecting rod and the extrusion needle, which can ensure the contact area with the needle sleeve and prevent the needle sleeve from being depressed by long-term force.

[0020] (2) The mold extrusion device of the utility model can effectively prevent the threaded connection from loosening after long-term use, resulting in the pinhole size not being consistent after extrusion, by setting the installation groove. The setting of the positioning groove can prevent the position of the pressing sleeve from shifting during installation, resulting in interference and straining of the entire device when the subsequent extrusion device moves back and forth.

[0021] (3) The mold extrusion device of the utility model can quickly replace the stuck extrusion needle and needle sleeve by simply removing the third connecting piece during maintenance and replacement, which greatly saves maintenance time and reduces damage to components such as the extrusion cylinder and connecting rod, and has good practical value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the die extrusion device in the embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of a conventional die extrusion device;

[0025] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0026] 1. Needle sleeve; 2. Extrusion needle; 3. Mold; 4. Connecting rod; 5. Pressing sleeve; 6. Extrusion oil cylinder; 7. First pressing plate; 8. First connecting piece; 9. Second connecting piece; 10. Third connecting piece; 11. Second pressing plate; 12. Cylinder fixing screw; 13. Pressing plate fixing screw;

[0027] 301, positioning groove;

[0028] 401. Installation slot. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The inventor of the present utility model noticed that Figure 2 As shown, in order to replace the extrusion needle 2 and the needle sleeve 1 of the traditional extrusion device, it is necessary to first remove the cylinder fixing screw 12 connecting the extrusion cylinder 6 and the mold 3. However, since the second pressing plate 11 is usually arranged to abut against the needle sleeve 1 so that it is well connected with the mold 3. At this time, a through hole is opened on the second pressing plate 11 to allow the pressing plate fixing screw 13 to pass through and connect the second pressing plate 11 with the mold 3, and the pressing plate fixing screw 13 is located inside the mold 3. However, it is precisely because the pressing plate fixing screw 13 is located inside the mold 3 and cannot be removed, when the extrusion needle 2 and the needle sleeve 1 are stuck, the extrusion needle 2 can only be knocked from the front of the mold 3 or the extrusion cylinder 6 can only be knocked directly, resulting in a long maintenance time and damage to other parts.

[0035] Therefore, the inventor of the utility model thought of canceling the original second pressure plate 11 and the pressure plate fixing screw 13, and replacing them with a long pressure sleeve and adding a pressure plate at the bottom of the cylinder, so as to achieve the effect of quick replacement, and thus can be suitable for extrusion devices that frequently get stuck during the production process, such as a double extrusion device located at the feed port of the mold 3, and a mold extrusion device with poor cooling effect.

[0036] Example:

[0037] See also Figure 1 The die extrusion device in the preferred embodiment of the utility model is used for extruding the product on the die-casting die 3 where pores are easily generated, and includes an extrusion needle 2, a needle sleeve 1, an extrusion oil cylinder 6 and a connecting rod 4. The extrusion needle 2 is partially installed in the needle sleeve 1, the needle sleeve 1 is installed in the die 3, one end of the connecting rod 4 is connected to the extrusion needle 2, and the other end is connected to the extrusion oil cylinder 6, and also includes a pressing sleeve 5 and a first pressing plate 7. In specific implementation, the needle sleeve 1 can be designed with internal teeth, and a T-type die puller can be used to assist in installation.

[0038] Among them, in the preferred embodiment, a mounting groove 401 is provided on the connecting rod 4, which is a T-shaped groove provided corresponding to the extrusion needle 2. The extrusion needle 2 is installed and connected to the connecting rod 4 through the mounting groove 401, and due to the setting of the T-shaped groove, the end of the extrusion needle 2 can be better stuck therein, so that the extrusion needle 2 and the connecting rod 4 are well installed.

[0039] Furthermore, in the preferred embodiment, the die extrusion device further comprises a first connecting member 8, and the connecting rod 4 is connected to the extrusion cylinder 6 via the first connecting member 8. Figure 1 As shown, in a specific implementation, the first connecting member 8 uses a connecting sleeve, and the arrangement of the connecting sleeve and the mounting groove 401 can effectively prevent the threaded connection from becoming loose after long-term use, resulting in the pinhole size not being consistent after extrusion.

[0040] Furthermore, if Figure 1 As shown, in the preferred embodiment, a positioning groove 301 is provided on the mold 3 corresponding to the pressing sleeve 5, which is specifically a groove. One end of the pressing sleeve 5 is installed and connected to the mold 3 through the positioning groove 301 and abuts against the needle sleeve 1, and the other end of the pressing sleeve 5 abuts against the extrusion cylinder 6. The pressing sleeve 5 is arranged as a whole to be relatively long, and a groove can be opened in the middle to accommodate the connecting rod 4, the first connecting member 8 and part of the extrusion cylinder 6. The relatively long pressing sleeve 5 can form a space with the connecting rod 4, the first connecting member 8 and the extrusion needle 2, which can ensure the contact area with the needle sleeve 1 and prevent the needle sleeve 1 from being subjected to long-term force to press the pressing sleeve 5.

[0041] Specifically, in the preferred embodiment, the gap between the positioning groove 301 and the pressing sleeve 5 is 0.5-1 mm on one side. The positioning groove 301 can prevent the pressing sleeve 5 from being offset during installation, which may interfere with and damage the entire device when the subsequent extrusion device moves back and forth. At the same time, a certain gap is left to facilitate installation and prevent the connecting rod 4 from being damaged.

[0042] Furthermore, in the preferred embodiment, the first pressing plate 7 is installed and connected to the extrusion cylinder 6, and the first pressing plate 7 is also connected to the mold 3. In the preferred embodiment, the mold extrusion device also includes a second connecting member 9 and a third connecting member 10, and the first pressing plate 7 is connected to the extrusion cylinder 6 through the second connecting member 9, and the first pressing plate 7 is connected to the mold 3 through the third connecting member 10.

[0043] More specifically, in the preferred embodiment, the second connecting member 9 is a hexagon socket screw, and the third connecting member 10 is a hexagon socket screw. In the specific implementation, the first pressing plate 7 is fixed to the extrusion cylinder 6 by four 12.9-grade hexagon socket screws, and then fixed to the mold 3 by four 12.9-grade hexagon socket screws, which plays the role of pressing the pressing sleeve 5 and the needle sleeve 1 and then fixing the entire device.

[0044] A first pressing plate 7 is installed behind the extrusion cylinder 6 to fix the extrusion cylinder 6 on the mold 3. The extrusion cylinder 6, the connecting rod 4, and the extrusion needle 2 are installed into the needle sleeve 1 together through the second connecting piece 9, which not only plays the role of installing the extrusion cylinder 6, but also can die-cast the needle sleeve 1 to prevent the feeding caused by its retreat.

[0045] In addition, in the preferred embodiment, a mounting piece is provided between the first pressing plate 7 and the extrusion oil cylinder 6. In the preferred embodiment, the mounting piece adopts an internal thread screw, which can be assisted by a T-type die puller to ensure safety and facilitate disassembly and assembly.

[0046] When installing the mold extrusion device in the utility model, first install the needle sleeve 1 inside the mold of the mold 3, and the needle sleeve 1 and the mold are in a clearance fit. The mold corresponding to the installation surface of the needle sleeve 1 is processed to form a positioning groove 301 corresponding to the pressing sleeve 5, and then the pressing sleeve 5 is installed in the positioning groove 301, and the extrusion needle 2 is inserted into the connecting rod 4 through the installation groove 401 to complete the connection. The extrusion cylinder 6 and the connecting rod 4 are connected through the first connecting member 8, i.e., the connecting sleeve, which effectively prevents the loosening caused by the threaded connection. The first pressing plate 7 is installed together by the four second connecting members 9, and finally the installed device is loaded from the needle sleeve 1, and installed on the mold frame of the mold 3 through the four third connecting members 10 to complete the installation of the entire device.

[0047] When the extrusion needle 2 and the needle sleeve 1 are stuck on the machine and need to be replaced, the entire device together with the needle sleeve 1 stuck on the extrusion needle 2 can be removed by removing the four third connecting parts 10. If necessary, a T-type mold puller can be used to assist, and then the extrusion needle 2 and the needle sleeve 1 are cut off at the stuck position by a cutting machine, and the pressing sleeve 5 is taken out, and the removal of the entire device is quickly completed.

[0048] The installation and removal of the device only requires the installation of the entire device for the first installation, and the subsequent installation and removal mainly involve the installation and removal of the four third connecting members 10, so that quick replacement can be achieved.

[0049] The mold extrusion device in the utility model can quickly replace the stuck extrusion needle and needle sleeve by only removing the third connecting piece during maintenance and replacement, which greatly saves maintenance time and reduces damage to components such as the extrusion cylinder and the connecting rod, and has good practical value and application prospects.

[0050] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold extrusion device, used for extruding the position where the product on the die-casting mold is prone to produce pores, comprising an extrusion needle, a needle sleeve, an extrusion cylinder and a connecting rod, wherein the extrusion needle is partially installed in the needle sleeve, the needle sleeve is installed in the mold, one end of the connecting rod is connected to the extrusion needle, and the other end is connected to the extrusion cylinder, characterized in that: Also includes a press sleeve and a first press plate; The mold is provided with a positioning groove corresponding to the pressing sleeve, and one end of the pressing sleeve is installed and connected to the mold through the positioning groove; the other end of the pressing sleeve abuts against the extrusion cylinder; The first pressing plate is installed and connected to the extrusion cylinder, and the first pressing plate is also connected to the mold.

2. The die extrusion device according to claim 1, characterized in that: It also includes a first connecting member, and the connecting rod is connected to the extrusion cylinder through the first connecting member.

3. The die extrusion device according to claim 1, characterized in that: It also includes a second connecting member, and the first pressing plate is connected to the extrusion cylinder through the second connecting member.

4. The die extrusion device according to claim 3, characterized in that: The second connecting member is a hexagon socket screw.

5. The die extrusion device according to claim 1, characterized in that: It also includes a third connecting member, and the first pressing plate is connected to the mold through the third connecting member.

6. The die extrusion device according to claim 5, characterized in that: The third connecting member is a hexagon socket screw.

7. The die extrusion device according to any one of claims 1 to 6, characterized in that: The gap between the positioning groove and the pressing sleeve is 0.5-1 mm on one side.

8. The die extrusion device according to any one of claims 1 to 6, characterized in that: A mounting member is provided between the first pressing plate and the extrusion cylinder.

9. The die extrusion device according to claim 8, characterized in that: The mounting piece adopts an internal thread screw.

10. The die extrusion device according to any one of claims 1 to 6, characterized in that: The connecting rod is provided with a mounting groove, and the extrusion needle is installed and connected to the connecting rod through the mounting groove.

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