Die with pressurizing structure

Abstract

The utility model relates to a die with a pressurizing structure, which comprises an upper die and a lower die, a die core capable of sliding relative to the upper die is arranged on the upper die, and a die-casting cavity capable of forming a target casting is arranged between the die core and the lower die. The upper die is further provided with a pressurizing assembly capable of pushing the die core to enable the die core to slide relative to the upper die and to be tightly attached to the lower die, the pressurizing assembly comprises a rotating piece rotationally connected to the upper die, and the rotating piece is provided with a pushing part which protrudes outwards and can push the die core when the rotating piece rotates; the lower end of the rotating piece is connected with a driving piece which can push the lower die to enable the rotating piece to rotate. The pressure of the die-casting cavity is increased, and the density of plastic liquid in the die-casting cavity is increased, so that bubbles are reduced and even eliminated, and defective products caused by insufficient bubbles or pouring materials of castings are avoided.

Description

[Technical field]

[0001] The utility model relates to a mould with a pressure-increasing structure. [Background technology]

[0002] There are many factors that affect the quality of castings in die casting molds, and the presence of bubbles inside the castings is an important factor. In the market, due to unreasonable structures, many castings are difficult to meet technical requirements due to bubble problems, especially in the thicker parts of the castings. This will lead to unqualified finished castings or even scrapped, greatly affecting the production costs of enterprises. Therefore, it is necessary to design a die casting mold structure that effectively eliminates or reduces bubbles inside the castings to solve the above problems and meet the needs of the current market. [Contents of the utility model]

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a mold with a supercharging structure, which reduces bubbles inside the casting and has the characteristics of high casting quality through the innovative combination of an upper mold, a lower mold, a supercharging component and a mold core.

[0004] The utility model is realized by the following technical solutions:

[0005] A mold with a boosting structure comprises an upper mold and a lower mold, wherein the upper mold is provided with a mold core that can slide relative to the upper mold, and a die-casting cavity that can form a target casting is provided between the mold core and the lower mold. The upper mold is also provided with a boosting component that can push the mold core so that the mold core slides relative to the upper mold and is tightly attached to the lower mold. The boosting component comprises a rotating part rotatably connected to the upper mold, the rotating part is provided with a pressing part that protrudes outward and can push the mold core when the rotating part rotates, and the lower end of the rotating part is connected to a driving part that can push the lower mold to rotate the rotating part.

[0006] As described above, in the mold with a boosting structure, the mold core and the lower mold form a glue injection gap that can increase the glue injection position when the mold is closed, and when the boosting component is started, the mold core moves relative to the upper mold and is tightly attached to the lower mold.

[0007] As described above, the mold with a pressurizing structure is further provided with a positioning seat on the upper mold, the rotating member includes a rotating rod, the rotating rod is connected to a connecting shaft that can extend laterally and be connected to the positioning seat, the pressing part is a pressing block provided at the upper end of the rotating member, and the driving member is connected to the lower end of the rotating rod.

[0008] As described above, the mold with a pressurizing structure has a positioning groove on the mold core, and a pressure shaft that can rotate relative to the positioning groove and be pressed by the pressing part is connected to the mold core and located in the positioning groove. The pressure shaft is also provided with an inwardly concave groove.

[0009] In the mold with a pressurized structure as described above, the driving member is a cylinder, a pushing portion is connected to the output shaft of the driving member, and a pushing block capable of being pushed by the pushing portion is provided on the lower mold.

[0010] In the mold with a pressurizing structure as described above, the push portion is provided with an arc-shaped push surface, and the push block is provided with an arc-shaped groove that can be matched with the arc-shaped push surface.

[0011] The mold with a pressurizing structure as described above, the lower mold is also detachably connected to a connecting block, the connecting block is provided with a receiving groove capable of accommodating the movement of a rotating rod therein, the lower end of the rotating rod is connected with a connecting block capable of preventing the rotating rod from detaching from the receiving groove, the driving member is connected to the connecting block, and the connecting block and the rotating rod are also provided with a first making way groove and a second making way groove capable of making way for the output shaft of the driving member.

[0012] As described above, in the mold with a pressurizing structure, the positioning seat is further provided with an extension portion extending downward, and the extension portion is provided with a sensor capable of detecting the distance from the extension portion to the top surface of the connecting block.

[0013] Compared with the prior art, the utility model has the following advantages: when the utility model is used, the upper mold and the lower mold are first closed, and then plastic liquid is injected into the mold. The die-casting cavity will constrain the plastic liquid and form the specific shape of the target casting. In the process of gradual cooling of the target casting, the driving member is started. After the driving member is driven, the rotating member drives the rotating member to rotate relative to the upper mold. When the rotating member rotates relative to the upper mold, the pressing part on the rotating member pushes the mold core to make the mold core slide relative to the upper mold and move closer to the lower mold until the mold core is tightly attached to the lower mold. At this time, the plastic liquid is squeezed into the die-casting cavity, the pressure of the die-casting cavity is increased, and the density of the plastic liquid in the die-casting cavity is increased, thereby making the bubbles smaller or even eliminated, thereby avoiding defective products of the casting caused by bubbles or insufficient casting material.

Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of a mold with a pressurizing structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the mold with a pressurizing structure of the utility model;

[0016] Figure 3 It is a three-dimensional diagram of the upper mold in the mold with a pressurizing structure of the utility model;

[0017] Figure 4 This is an exploded view of the upper mold in the mold with a pressurizing structure of the utility model;

[0018] Figure 5It is an exploded view of the positioning seat and the rotating part in the mold with a supercharging structure of the utility model;

[0019] Figure 6 It is an exploded view of the pressure-bearing shaft and the mold core in the mold with a pressurizing structure of the utility model;

[0020] Figure 7 It is a stereoscopic diagram of the lower mold in the mold with a pressurizing structure of the utility model. [Specific implementation method]

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] like Figures 1 to 7 As shown, the utility model provides a mold with a boosting structure, including an upper mold 1 and a lower mold 2, the upper mold 1 is provided with a mold core 11 that can slide relative to the upper mold 1, and a die-casting cavity 3 that can form a target casting is provided between the mold core 11 and the lower mold 2, the upper mold 1 is also provided with a boosting component 4 that can push the mold core 11 so that the mold core 11 slides relative to the upper mold 1 and is tightly attached to the lower mold 2, the boosting component 4 includes a rotating member 41 rotatably connected to the upper mold 1, the rotating member 41 is provided with a pressing portion 411 that protrudes outward and can push the mold core 11 when the rotating member 41 rotates, and the lower end of the rotating member 41 is connected to a driving member 42 that can push the lower mold 2 to rotate the rotating member 41.

[0023] When the utility model is in use, the upper mold 1 and the lower mold 2 are firstly closed, and then plastic liquid is injected into the mold, the die-casting cavity 3 will constrain the plastic liquid and form the specific shape of the target casting, and in the process of the target casting gradually cooling, the driving member 42 is started, and the driving member 42 is driven to drive the rotating member 41 to rotate relative to the upper mold 1. When the rotating member 41 rotates relative to the upper mold 1, the pressing portion 411 on the rotating member 41 pushes the mold core 11 so that the mold core 11 slides relative to the upper mold 1 and moves closer to the lower mold 2 until the mold core 11 is tightly attached to the lower mold 2, at which time the plastic liquid is squeezed into the die-casting cavity 3, the pressure of the die-casting cavity 3 is increased, and the density of the plastic liquid in the die-casting cavity 3 is increased, so that the bubbles are reduced or even eliminated, thereby avoiding defective products caused by bubbles or insufficient casting materials in the casting.

[0024] The core 11 and the lower mold 2 also form a glue injection gap 500 that can increase the glue injection position when the mold is closed, and when the booster assembly 4 is started, the core 11 moves relative to the upper mold 1 and is tightly attached to the lower mold 2. The setting of the glue injection gap 500 increases the interval between the core 11 and the lower mold 2, and more plastic liquid can be injected. At the same time, the injection of plastic liquid will squeeze the air in the glue injection gap 500, reduce the defective products caused by bubbles or insufficient casting materials, and improve the yield rate.

[0025] The upper mold 1 is also provided with a positioning seat 12, the rotating member 41 includes a rotating rod 412, the rotating rod 412 is connected with a connecting shaft 413 that can extend laterally and is connected to the positioning seat 12, the pressing portion 411 is a pressing block provided at the upper end of the rotating member 41, and the driving member 42 is connected to the lower end of the rotating rod 412. The positioning seat 12 is provided for positioning, the rotating rod 412 rotates relative to the positioning seat 12 through the connecting shaft 413, and when the rotating rod 412 rotates, the pressing portion 411 gradually pushes the mold core 11 so that the mold core 11 slides relative to the upper mold 1.

[0026] The mold core 11 is provided with a positioning groove 111, and a pressure shaft 112 is connected to the mold core 11 and is located in the positioning groove 111. The pressure shaft 112 can rotate relative to the positioning groove 111 and is pressed by the pressing part 411. The pressure shaft 112 is also provided with a concave groove 1121. At the same time, when the rotating member 41 rotates, the pressing part 411 on the rotating member 41 gradually contacts and pushes the pressure shaft 112, thereby pushing the mold core 11 to slide relative to the front mold 1. Since the pressure shaft 112 can rotate relative to the mold core 11, the pressing part 411 is in a rolling contact state with the surface of the pressure shaft 112, forming a movable contact surface, which can reduce the wear of the pressure shaft 112 and extend the service life of the pressure shaft 112. Since the pressure-bearing shaft 112 can be removed from the positioning groove 111, there is no need to worry about the wear of the core 11 after long-term use. This can avoid the situation where the core 11 is not compressed due to wear on the edge of the core 11. Only the pressure-bearing shaft 112 needs to be replaced. The replacement is convenient and the replacement cost is low.

[0027] The driving member 42 is a cylinder, the output shaft 421 of the driving member 42 is connected with a pushing portion 422, and the lower mold 2 is provided with a pushing block 21 that can be pushed by the pushing portion 422. The setting of the pushing portion 422 and the pushing block 21 facilitates the rotation stroke of the positioning rotating member 41.

[0028] The pushing portion 422 is provided with an arcuate pushing surface 4221, and the pushing block 21 is provided with an arcuate groove 211 that can be matched with the arcuate pushing surface 4221. The arcuate pushing surface 4221 and the arcuate groove 211 cooperate to push and position.

[0029] The lower mold 2 is also detachably connected to a first connecting block 22, and the first connecting block 22 is provided with a receiving groove 221 capable of accommodating the rotation rod 412 to move therein. The lower end of the rotation rod 412 is connected with a second connecting block 414 capable of preventing the rotation rod 412 from being separated from the receiving groove 221. The driving member 42 is connected to the second connecting block 414, and the second connecting block 414 and the rotation rod 412 are also provided with a first giving way groove 4141 and a second giving way groove 4121 capable of giving way to the output shaft 421 of the driving member 42. The first giving way groove 4141 and the second giving way groove 4121 are provided to give way to the output shaft 421 of the driving member 42. The groove wall of the receiving groove 221 can be supported by the rotation rod 412 to limit the rotation range of the rotation rod 412.

[0030] The rotating rod 412 is also provided with an extension portion 121 extending downward, and the extension portion 121 is provided with a sensor 6 capable of detecting the distance between the extension portion 121 and the top surface of the first connecting block 22. The sensor 6 is used to detect the distance between the extension portion 121 and the top surface of the first connecting block 22, thereby limiting the distance that the upper mold 1 moves relative to the lower mold 2 to avoid the second connecting block 414 being damaged by abutting against the first connecting block 22.

Claims

1. A mold with a supercharging structure, characterized in that: The invention comprises an upper die (1) and a lower die (2), characterized in that the upper die (1) is provided with a die core (11) which can slide relative to the upper die, a die-casting cavity (3) which can form a target casting is provided between the die core (11) and the lower die (2), and the upper die (1) is also provided with a booster assembly (4) which can push the die core (11) so that the die core (11) slides relative to the upper die (1) and is tightly attached to the lower die (2), the booster assembly (4) comprises a rotating member (41) rotatably connected to the upper die (1), the rotating member (41) is provided with a pressing portion (411) which protrudes outward and can push the die core (11) when the rotating member (41) rotates, and the lower end of the rotating member (41) is connected with a driving member (42) which can push the lower die (2) so that the rotating member (41) rotates.

2. The mold with a pressurized structure according to claim 1, characterized in that: The mold core (11) and the lower mold (2) also form a glue injection gap (500) that can increase the glue injection position when the mold is closed, and when the booster component (4) is started, the mold core (11) moves relative to the upper mold (1) and is tightly attached to the lower mold (2).

3. The mold with a pressurized structure according to claim 1 or 2, characterized in that: The upper mold (1) is also provided with a positioning seat (12), the rotating member (41) includes a rotating rod (412), the rotating rod (412) is connected with a connecting shaft (413) that can extend laterally and be connected to the positioning seat (12), the pressing portion (411) is a pressing block provided at the upper end of the rotating member (41), and the driving member (42) is connected to the lower end of the rotating rod (412).

4. The mold with a pressurized structure according to claim 1 or 2, characterized in that: The mold core (11) is provided with a positioning groove (111), and a pressure shaft (112) is connected to the mold core (11) and is located in the positioning groove (111). The pressure shaft (112) is rotatable relative to the positioning groove (111) and is pressed by the pressing part (411), and the pressure shaft (112) is also provided with an inwardly concave groove (1121).

5. The mold with a pressurized structure according to claim 1, characterized in that: The driving member (42) is a cylinder, the output shaft (421) of the driving member (42) is connected with a pushing portion (422), and the lower mold (2) is provided with a pushing block (21) capable of being pushed by the pushing portion (422).

6. The mold with a pressurized structure according to claim 5, characterized in that: The pushing portion (422) is provided with an arc-shaped pushing surface (4221), and the pushing block (21) is provided with an arc-shaped groove (211) that can be matched with the arc-shaped pushing surface (4221).

7. The mold with a pressurized structure according to claim 3, characterized in that: The lower mold (2) is also detachably connected to a first connecting block (22); the first connecting block (22) is provided with a receiving groove (221) capable of accommodating the movement of a rotating rod (412); a second connecting block (414) capable of preventing the rotating rod (412) from detaching from the receiving groove (221) is connected to the lower end of the rotating rod (412); the driving member (42) is connected to the second connecting block (414); the second connecting block (414) and the rotating rod (412) are also provided with a first making way groove (4141) and a second making way groove (4121) capable of making way for an output shaft (421) of the driving member (42).

8. The mold with a pressurized structure according to claim 3, characterized in that: The positioning seat (12) is also provided with an extension portion (121) extending downwards, and the extension portion (121) is provided with a sensor (6) capable of detecting the distance from the extension portion (121) to the top surface of the first connecting block (22).

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