Insert positioning structure and mold

Abstract

The utility model discloses an insert positioning structure and a mold, and belongs to the technical field of casting molds, the insert positioning structure comprises a mold core, an insert and a sliding block; the insert is located between the mold core and the sliding block, and the insert is fixed to the mold core through the sliding block. The insert and the mold core are in sliding connection through a positioning groove and a sliding table, meanwhile, in the extending direction perpendicular to the positioning groove, the mold core positions the insert, and the insert and the sliding block are positioned through a pin shaft; the mold comprises a mold core, a sliding block and a plurality of inserts, and the inserts are connected with the mold core and the sliding block through the insert positioning structure. The double positioning structure of the insert can effectively avoid the influence of abrasion on the positioning accuracy of the insert during disassembly and assembly of the insert, and the service life of the mold is prolonged; a large amount of maintenance time is saved, and the production efficiency is improved; and meanwhile, the flexibility of the die is obviously improved due to the application of the insert.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, in particular to an insert positioning structure and a mold. Background Art

[0002] The products obtained by investment casting are precise and complex, close to the final shape of the parts, and can be used directly without processing or with little processing; it is not only suitable for casting of various types and alloys, but also the dimensional accuracy and surface quality of the castings produced are higher than those of other casting methods. Even complex, high-temperature-resistant, and difficult-to-process castings that are difficult to cast by other casting methods can be cast by investment casting.

[0003] In the precision casting process, wax molds need to be made. When making wax molds, due to the complex shape of the workpiece and the difficulty in parting the inner cavity, multiple inserts will be used for splicing. In existing molds, the insert positioning structure is unreasonable, and long-term use and wear can easily cause the insert positioning accuracy to decrease, the insert splicing to be unstable, and movement to occur, resulting in defective wax parts, thereby wasting costs. In addition, the mold has a short lifespan and cannot be used for a long time. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides an insert positioning structure and a mold, which has high insert positioning accuracy and extends the service life of the mold.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] On the one hand, the utility model provides an insert positioning structure, comprising a core, an insert and a slider; the insert is located between the core and the slider, and the slider is used to fix the insert on the core;

[0007] The insert and the core are slidably connected via a positioning groove and a slide, and the core positions the insert in a direction perpendicular to the extending direction of the positioning groove.

[0008] The insert and the slider are positioned via a pin.

[0009] In the above-mentioned insert positioning structure, the cross-sections of the positioning groove and the slide are dovetail-shaped.

[0010] In the above-mentioned insert positioning structure, the end face of the first connecting end of the insert is fitted with the core to position the insert in the extension direction of the positioning groove; the positioning groove is located on the end face of the first connecting end of the insert and extends toward the interior of the insert; the slide is arranged on the core.

[0011] In the above-mentioned insert positioning structure, positioning pin holes are provided on the end faces of the slider and the second connecting end of the insert, and both ends of the pin shaft extend into the positioning pin holes of the slider and the insert respectively.

[0012] In the above-mentioned insert positioning structure, the relative sliding direction between the insert and the core is along the demoulding direction of the core.

[0013] On the one hand, the utility model provides a mold, including a core, a slider and a plurality of inserts, wherein the inserts are connected to the core and the slider using the insert positioning structure as described above.

[0014] In the above-mentioned mold, a plurality of the inserts are sequentially spliced ​​to form a columnar movable core, and the outer side surfaces of the core, the movable core and the slider are spliced ​​to form the molding surface of the inner cavity of the part.

[0015] In the above mold, the interior of the movable core is hollow, and the extension body of the slider extends into the interior of the movable core.

[0016] The beneficial effects of the present invention are as follows:

[0017] Positioning structures are designed at both ends of the insert. That is, the insert and the core are slidably connected through the positioning groove and the slide. At the same time, the insert and the slide are positioned perpendicular to the extension direction of the positioning groove. The insert and the slide are positioned by the pin. The double positioning structure can not only accurately position the insert, but also achieve good connection effect at the joints of multiple inserts. At the same time, it also realizes the fixation of the insert during use, simplifying the overall structure of the mold.

[0018] It effectively avoids the influence of wear during assembly and disassembly of inserts on the positioning accuracy of inserts, prolongs the service life of the mold, saves a lot of maintenance time and improves production efficiency.

[0019] The application of inserts significantly improves the flexibility of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the mold of the utility model;

[0021] Figure 2 A cross-sectional view of an embodiment of the mold of the present utility model;

[0022] Figure 3 This is a structural diagram of the first insert in the mold of the utility model from a first perspective;

[0023] Figure 4 This is a structural schematic diagram of the first insert in the mold of the utility model from a second perspective;

[0024] Figure 5This is a schematic structural diagram of the second insert in the mold of the utility model from a first perspective;

[0025] Figure 6 This is a structural schematic diagram of the second insert in the mold of the utility model from a second perspective;

[0026] Figure 7 This is a schematic structural diagram of the third insert in the mold of the utility model from a first perspective;

[0027] Figure 8 This is a structural schematic diagram of the third insert in the mold of the utility model from a second perspective;

[0028] Figure 9 This is a schematic structural diagram of the fourth insert in the mold of the utility model from a first perspective;

[0029] Figure 10 This is a structural schematic diagram of the fourth insert in the mold of the utility model from a second perspective;

[0030] Figure 11 This is a structural diagram of the slider in the mold of the utility model;

[0031] Figure 12 This is a schematic diagram of the structure of the core in the mold of the utility model;

[0032] Figure 13 This is a schematic structural diagram of the parts produced by the mold of the utility model.

[0033] In the picture:

[0034] 1- core; 11- first slide; 12- second slide; 13- third slide; 14- fourth slide; 15- first insert positioning surface; 16- second insert positioning surface;

[0035] 2-Inlay;

[0036] 21-first insert; 211-first positioning groove; 212-first insert pin hole; 213-first insert splicing surface; 214-first core positioning surface; 215-first slider docking surface;

[0037] 22-second insert; 221-second positioning groove; 222-second insert pin hole; 223-second insert splicing surface; 224-second core positioning surface; 225-second slider docking surface;

[0038] 23-third insert; 231-third positioning groove; 232-third insert pin hole; 233-third core positioning surface; 234-third insert splicing surface; 235-third slider docking surface;

[0039] 24-fourth insert; 241-fourth positioning groove; 242-fourth insert pin hole; 243-fourth insert splicing surface; 244-fourth core positioning surface; 245-fourth slider docking surface;

[0040] 3-slider; 31-first slider pin hole; 32-second slider pin hole; 33-third slider pin hole; 34-fourth slider pin hole; 35-extension body; 36-insert second end docking surface;

[0041] 4- Parts. DETAILED DESCRIPTION

[0042] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0043] First, please refer to Figure 1-Figure 3 , is an embodiment of an insert positioning structure provided by the present invention, comprising a core 1, an insert 2 and a slider 3, wherein the insert 2 has two connecting ends, which are respectively connected to the core 1 and the slider 3; hereinafter, the end connecting the insert 2 to the core 1 is the first connecting end, and the end connecting the insert 2 to the slider 3 is the second connecting end. The insert 2 is located between the core 1 and the slider 3 and the insert 2 is detachable. When in use, the insert 2 is clamped and fixed by the core 1 and the slider 3. Taking full account of the wear of the insert 2 during the disassembly and assembly process, in order to ensure the positioning accuracy of the insert 2 and extend the service life of the mold, the insert 2 is doubly positioned. First, the insert 2 and the core 1 are clamped by a positioning groove and a slide; preferably, the cross-section of the positioning groove and the slide is dovetail-shaped, and the positioning accuracy of the positioning groove and the slide is high; second, the insert 2 and the slider 3 are positioned by a pin; this prevents the insert 2 from being misplaced, avoids reducing the positioning accuracy of the insert 2, and also prevents the insert 2 and the slider 3 from being misaligned. When in use, a thrust is applied to the slider 3 to fix the slider 3 , the insert 2 and the core 1 .

[0044] Furthermore, the end surface of the first connecting end of the insert 2 is butted against the positioning surface on the core 1, positioning the insert 2 perpendicular to the extension direction of the positioning groove. Simultaneously, the positioning groove is located on the end surface of the first connecting end and extends into the interior of the insert 2. A slide is machined at the corresponding position on the core 1 to facilitate the machining of the core 1 and insert 2.

[0045] The positioning pin hole on the insert 2 is located on the end face of the second connecting end, and a corresponding positioning pin hole is also processed on the docking surface of the slider 3. The positioning of the insert 2 and the slider 3 is achieved by the pin shaft located in the positioning pin hole.

[0046] On the other hand, please refer to Figures 1-13 , is an embodiment of a mold provided by the present invention, which uses the above-mentioned insert positioning structure. The mold includes a core 1, a slider 3 and a plurality of inserts 2.

[0047] Please refer to Figure 1-12 A plurality of inserts 2 are arranged in a ring shape and sequentially spliced ​​together to form a movable core; the movable core, the core 1, and the slider 3 together complete the inner cavity molding of the part 4. For example, the number of inserts 2 is four, including a first insert 21, a second insert 22, a third insert 23, and a fourth insert 24.

[0048] Please refer to Figure 3 and Figure 4 The first connecting end of the first insert 21 has a first core positioning surface 214, and a first positioning groove 211 is formed on the first core positioning surface 214, and the first positioning groove 211 extends toward the interior of the first insert 21; the second connecting end of the first insert 21 has a first slider docking surface 215, and a first insert pin hole 212 is processed on the first slider docking surface 215; the first insert 21 also has a first insert splicing surface 213.

[0049] Please refer to Figure 5 and Figure 6 The first connecting end of the second insert 22 has a second core positioning surface 224, and a second positioning groove 221 is provided on the second core positioning surface 224, and the second positioning groove 221 extends toward the interior of the second insert 22; the second connecting end of the second insert 22 has a second slider docking surface 225, and a second insert pin hole 222 is processed on the second slider docking surface 225; the second insert 22 also has a second insert splicing surface 223.

[0050] Please refer to Figure 7 and Figure 8 The first connecting end of the third insert 23 has a third core positioning surface 233, and the third core positioning surface 233 is provided with a third positioning groove 231, and the third positioning groove 231 extends toward the interior of the third insert 23; the second connecting end of the third insert 23 has a third slider docking surface 235, and the third slider docking surface 235 is processed with a third insert pin hole 232; the third insert 23 also has a third insert splicing surface 234.

[0051] Please refer to Figure 9 and Figure 10 The first connecting end of the fourth insert 24 has a fourth core positioning surface 244, and the fourth core positioning surface 244 is provided with a fourth positioning groove 241, and the fourth positioning groove 241 extends toward the interior of the fourth insert 24; the second connecting end of the fourth insert 24 has a fourth slider docking surface 245, and the fourth slider docking surface 245 is processed with a fourth insert pin hole 242; the fourth insert 24 also has a fourth insert splicing surface 243.

[0052] Please refer to Figure 11 The slider 3 has an insert second end docking surface 36, on which the first slider pin hole 31, the second slider pin hole 32, the third slider pin hole 33 and the fourth slider pin hole 34 are processed.

[0053] Please refer to Figure 12 The core 1 has a first insert positioning surface 15 and a second insert positioning surface 16. The first insert positioning surface 15 and the second insert positioning surface 16 are parallel to each other and are stepped. The first slide 11, the second slide 12, and the fourth slide 14 are machined on the first insert positioning surface 15, and the third slide 13 is machined on the second insert positioning surface 16. The first and second insert positioning surfaces 15, 16 are perpendicular to the demolding direction, while the first slide 11, the second slide 12, the third slide 13, and the fourth slide 14 are along the demolding direction.

[0054] Please refer to the mold usage status Figure 1 ,

[0055] The first insert 21 and the second insert 22 are respectively located on the front and rear sides of the core 1; specifically, the first positioning groove 211 of the first insert 21 cooperates with the first slide 11, and at the same time, the first core positioning surface 214 fits with the first insert positioning surface 15 for positioning; the second positioning groove 221 of the second insert 22 cooperates with the second slide 12, and at the same time, the second core positioning surface 224 fits with the first insert positioning surface 15 for positioning.

[0056] The third insert 23 and the fourth insert 24 are both located between the first insert 21 and the second insert 22, and are arranged up and down; specifically, the third positioning groove 231 of the third insert 23 cooperates with the third slide 13, and at the same time, the third core positioning surface 233 fits with the second insert positioning surface 16 for positioning; the fourth positioning groove 241 of the fourth insert 24 cooperates with the fourth slide 14, and at the same time, the fourth core positioning surface 244 fits with the first insert positioning surface 15 for positioning.

[0057] The first insert 21, the third insert 23, the second insert 22 and the fourth insert 24 are connected in sequence to form a ring shape, that is, the first insert splicing surface 213 and the second insert splicing surface 223 are respectively tightly attached to the third insert splicing surface 234 and the fourth insert splicing surface 243 on both sides of the third insert 23 and the fourth insert 24; in this way, the first insert 21, the third insert 23, the second insert 22 and the fourth insert 24 together form a cylindrical movable core, and the outer side surface of the movable core is the molding surface of the inner cavity of the part 4, extending to the outside of the core 1. During demolding, the slider 3 exits the mold cavity of the part 4, and then the part 4 is separated from the core 1 first. During the separation process, the first insert 21, the third insert 23, the second insert 22 and the fourth insert 24 are carried upward by the part 4 and separated from the core 1; after losing the limit of the core 1 and the slider 3, the first insert 21, the third insert 23, the second insert 22 and the fourth insert 24 are also separated from the part 4.

[0058] Furthermore, an extension body 35 is provided in the middle of the second end docking surface 36 of the insert. The interior of the movable core is hollow, and the extension body 35 of the slider 3 extends into the interior of the movable core. Figure 2 As shown, the movable core can be well positioned, and the transition between the slider 3 and the movable core is smooth.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A block positioning structure, characterized in that: It comprises a core (1), an insert (2) and a slider (3); the insert (2) is located between the core (1) and the slider (3), and the slider (3) is used to fix the insert (2) on the core (1); The insert (2) and the core (1) are slidably connected via a positioning groove and a slide, and the core (1) positions the insert (2) in a direction perpendicular to the extension of the positioning groove. The insert (2) and the slider (3) are positioned via a pin.

2. The insert positioning structure according to claim 1, characterized in that: The cross sections of the positioning groove and the slide are dovetail-shaped.

3. The insert positioning structure according to claim 1, characterized in that: The end surface of the first connecting end of the insert (2) is fitted with the core (1), positioning the insert (2) in the extension direction of the positioning groove; the positioning groove is located on the end surface of the first connecting end of the insert (2) and extends toward the interior of the insert (2); the slide is arranged on the core (1).

4. The insert positioning structure according to claim 1, characterized in that: Positioning pin holes are provided on the end surfaces of the slider (3) and the second connecting end of the insert (2), and the two ends of the pin shaft extend into the positioning pin holes of the slider (3) and the insert (2) respectively.

5. The insert positioning structure according to claim 1, characterized in that: The relative sliding direction of the insert (2) and the core (1) is along the demoulding direction of the core (1).

6. A mold, characterized in that: It comprises a core (1), a slider (3) and a plurality of inserts (2), wherein the inserts (2) are connected to the core (1) and the slider (3) using an insert positioning structure as described in any one of claims 1 to 5.

7. The mold according to claim 6, characterized in that Several inserts (2) are spliced ​​in sequence to form a columnar movable core, and the outer side surfaces of the core (1), the movable core and the slider (3) are spliced ​​to form the molding surface of the inner cavity of the part (4).

8. The mold according to claim 7, characterized in that The interior of the movable core is hollow, and the extension body (35) of the slider (3) extends into the interior of the movable core.

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