Multi-station intermittent rotation die-casting tool

Abstract

The utility model discloses a multi-station intermittent rotation die-casting tool, which relates to the technical field of die-casting tools and comprises a die-casting boss, one side of the top surface of the die-casting boss is fixedly connected with a die-casting support, the outer wall of the top end of the die-casting support is fixedly connected with a telescopic cylinder, and the outer wall of the telescopic end of the telescopic cylinder is fixedly connected with a die-casting top plate. The rotary table rotates step by step under the action of the driving motor, castings on all stations enter the demolding stage in sequence, when the rotary table rotates to 270 degrees, the protruding part of the annular jacking assembly makes contact with the bottom face of the die-casting bottom plate, the annular jacking assembly is in contact with the annular jacking assembly, and therefore the castings can be separated from the die-casting bottom plate. And in the process, the circular-arc-shaped protruding contour of the annular jacking assembly enables the jacking force to be gradually increased, casting deformation caused by instant local pressure application is avoided, and the situation that local stress borne by the casting is difficult to disperse through the rising action of the whole die-casting bottom plate is avoided.

Description

Technical Field

[0001] This utility model relates to the field of die casting tooling technology, specifically a multi-station intermittent rotary die casting tooling. Background Technology

[0002] Die casting fixtures are specialized tools used for forming metal parts. They mainly consist of forming molds, support structures, and auxiliary devices. Their core function is to precisely shape complex metal products by rapidly filling and cooling molten metal at high temperatures. They are widely used in fields such as automobiles and electronics that require mass precision manufacturing.

[0003] Existing die-casting fixtures, after die-casting is completed, cause the casting to fit too tightly against the mold cavity surface after cooling and shrinking, especially in thin-walled or deep cavity areas, which easily forms a vacuum adsorption effect. This results in a large ejection force being required during demolding. Furthermore, during ejection, the local stress on the casting is relatively concentrated, which may cause surface scratches or deformation of the casting. In view of this, we provide a multi-station intermittent rotary die-casting fixture. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a multi-station intermittent rotary die-casting fixture.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-station intermittent rotary die-casting fixture, including a die-casting boss, a die-casting bracket fixedly connected to one side of the top surface of the die-casting boss, and a telescopic cylinder fixedly connected to the outer wall of the top of the die-casting bracket, a die-casting top plate fixedly connected to the outer wall of the telescopic end of the telescopic cylinder, a drive motor fixedly connected to the inner cavity of the die-casting boss, and an intermittent component fixedly connected to the outer wall of the output end of the drive motor, a central gear rotatably connected to the center of the inner cavity of the die-casting boss via a rotating shaft, and a rotary table fixedly connected to the outer wall of the top of the central gear, a limit bracket fixedly connected to the inner wall of the die-casting boss, and ball bearings rotatably connected to both the upper and lower ends of the limit bracket;

[0006] The top surface of the rotary table has multiple mold cavities, and the inner walls of the multiple mold cavities are slidably connected to die-casting base plates. Multiple lifting grooves are provided on both sides of the inner wall of the mold cavity. Multiple sliding protrusions are provided on both sides of the outer wall of the die-casting base plate. Multiple tension springs are sleeved in the inner cavity of the rotary table. An annular lifting assembly is fixedly connected to the center of the inner cavity of the die-casting boss.

[0007] As described above, a cylindrical component is fixedly connected to one side of the intermittent component, and the cylindrical component rotates around the drive motor. The outer wall of the central gear has multiple circular slots, and the inner diameter of the circular slots is the same as the inner diameter of the cylindrical component.

[0008] As described above, the outer walls of the multiple balls are embedded inside the rotary table, and the outer walls of the balls are rotatably connected to the inside of the rotary table. The inner wall of the rotary table is rotatably connected to the outer wall of the inner diameter of the limiting bracket.

[0009] As described above, the outer wall of the sliding contact is in close contact with the inner wall of the lifting groove, and the outer wall of the sliding contact is slidably connected to the inner wall of the lifting groove.

[0010] As described above, the annular lifting assembly is perfectly circular when viewed from above, and the annular lifting assembly is located at the center inside the rotating platform. When the rotating platform rotates, it does not interfere with the outer wall of the annular lifting assembly.

[0011] As mentioned above, the outer wall of the annular lifting assembly abuts against the outer wall of the bottom surface of the die-cast base plate.

[0012] As described above, the outer wall of the top end of the tension spring is fixedly connected to the bottom surface of the die-cast base plate, and the outer wall of the bottom end of the tension spring is fixedly connected to the bottom end of the inner cavity of the rotary table.

[0013] Compared with existing technologies, this multi-station intermittent rotary die-casting fixture has the following advantages:

[0014] 1. After die casting is completed, the rotary table rotates step by step under the action of the drive motor, so that the castings at each station enter the demolding stage in sequence. When it rotates to 270°, the protruding part of the annular lifting component contacts the bottom surface of the die casting base plate. Through vertical uniform lifting, the die casting base plate is pushed to move smoothly upward along the lifting slide, which drives the casting to gradually separate from the mold cavity. During this process, the arc-shaped protruding contour of the annular lifting component makes the lifting force gradually stronger, avoiding instantaneous local pressure that could cause the casting to deform. The upward movement of the entire die casting base plate is difficult to disperse the local stress on the casting.

[0015] II. When the cylindrical component moves to the edge of the central gear, its outer diameter precisely engages with the circular slot on the gear, pushing the central gear and the rotary table to rotate 45°. After the cylindrical component disengages from the slot, it continues until it engages with the next circular slot, causing the rotary table to rotate again. The intermittent cyclic rotation of multiple stations ensures that the lifting action is triggered at only one point within a 360° cycle, making the lifting and rotation strictly synchronized. This provides technicians with a clear and controllable operating rhythm, facilitating debugging and maintenance.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a partial three-dimensional structural diagram of the die-cast boss of this utility model;

[0019] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the die-cast boss of this utility model;

[0020] Figure 4 This is a partial three-dimensional structural diagram of the cylindrical component and circular slot of this utility model;

[0021] Figure 5 This utility model Figure 3 A partial three-dimensional structural diagram of A in the middle;

[0022] Figure 6 This is a partial three-dimensional structural diagram of the die-cast base plate and annular lifting assembly of this utility model;

[0023] Figure 7 This is a partial three-dimensional structural diagram of the annular lifting assembly of this utility model.

[0024] In the diagram: 1. Die-cast boss; 101. Limiting bracket; 102. Ball bearing; 103. Annular lifting assembly; 2. Die-cast bracket; 201. Telescopic cylinder; 202. Die-cast top plate; 3. Drive motor; 301. Intermittent assembly; 302. Central gear; 303. Cylindrical assembly; 304. Circular slot; 4. Rotary table; 401. Mold cavity; 402. Die-cast base plate; 403. Lifting slide; 404. Sliding contact; 405. Tension spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-7As shown, this utility model provides a technical solution: a multi-station intermittent rotary die-casting fixture, including a die-casting boss 1, a die-casting bracket 2 fixedly connected to one side of the top surface of the die-casting boss 1, and a telescopic cylinder 201 fixedly connected to the outer wall of the top of the die-casting bracket 2, a die-casting top plate 202 fixedly connected to the outer wall of the telescopic end of the telescopic cylinder 201, a drive motor 3 fixedly connected to the inner cavity of the die-casting boss 1, and an intermittent component 301 fixedly connected to the outer wall of the output end of the drive motor 3, a central gear 302 rotatably connected to the center of the inner cavity of the die-casting boss 1 via a rotating shaft, and a rotary table 4 fixedly connected to the outer wall of the top of the central gear 302, a limit bracket 101 fixedly connected to the inner wall of the die-casting boss 1, and ball bearings 102 rotatably connected to both the upper and lower ends of the limit bracket 101.

[0027] The top surface of the rotary table 4 has multiple mold cavities 401, and the inner walls of the multiple mold cavities 401 are slidably connected to die-casting base plates 402. Multiple lifting grooves 403 are provided on both sides of the inner wall of the mold cavity 401. Multiple sliding protrusions 404 are provided on both sides of the outer wall of the die-casting base plate 402. Multiple tension springs 405 are sleeved in the inner cavity of the rotary table 4. An annular lifting assembly 103 is fixedly connected to the center of the inner cavity of the die-casting boss 1.

[0028] After die casting is completed, the rotary table 4 rotates step by step under the action of the drive motor 3, so that the castings at each station enter the demolding stage in sequence. When it rotates to 270°, the protruding part of the annular lifting component 103 contacts the bottom surface of the die casting base plate 402. Through vertical uniform lifting, the die casting base plate 402 is pushed to move smoothly upward along the lifting slide 403, which drives the casting to gradually separate from the mold cavity 401. During this process, the arc-shaped protruding contour of the annular lifting component 103 makes the lifting force gradually stronger.

[0029] like Figures 3-4 As shown, a cylindrical component 303 is fixedly connected to one side of the intermittent component 301, and the cylindrical component 303 rotates around the drive motor 3. The outer wall of the central gear 302 is provided with multiple circular slots 304, and the inner diameter of the circular slots 304 is consistent with the inner diameter of the cylindrical component 303. When the cylindrical component 303 moves to the edge of the central gear 302, its outer diameter is precisely engaged with the circular slots 304 on the gear, pushing the central gear 302 and the rotary table 4 to rotate by 45°.

[0030] like Figure 3 As shown, the outer walls of multiple balls 102 are embedded inside the rotating platform 4, and the outer walls of the balls 102 are rotatably connected to the inside of the rotating platform 4. The inner wall of the rotating platform 4 is rotatably connected to the outer wall of the inner diameter of the limiting bracket 101, so that the rotating platform 4 is more stable and smooth during rotation due to the action of the balls 102.

[0031] like Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, the outer wall of the sliding contact 404 is in close contact with the inner wall of the lifting slide 403, and the outer wall of the sliding contact 404 is slidably connected to the inner wall of the lifting slide 403. By utilizing the cooperation between the sliding contact 404 and the lifting slide 403, the die-cast base plate 402 is prevented from shifting during movement.

[0032] As described above, the annular lifting assembly 103 is perfectly circular when viewed from above, and the annular lifting assembly 103 is located at the center inside the rotary table 4. When the rotary table 4 rotates, it does not interfere with the outer wall of the annular lifting assembly 103, so that when the rotary table 4 rotates, its inner wall and the outer wall of the annular lifting assembly 103 will not interfere unnecessarily, thus affecting the stable rotation of the rotary table 4.

[0033] As described above, the outer wall of the annular lifting component 103 abuts against the outer wall of the bottom surface of the die-cast base plate 402. When the rotary table 4 rotates, it drives the die-cast base plate 402 to rotate synchronously, and the annular lifting component 103 can push the die-cast base plate 402 upward through its own outer wall.

[0034] As described above, the outer wall of the top end of the tension spring 405 is fixedly connected to the bottom surface of the die-cast base plate 402, and the outer wall of the bottom end of the tension spring 405 is fixedly connected to the bottom end of the inner cavity of the rotary table 4. After the rotary table 4 rotates a full circle, the tension spring 405 can pull the die-cast base plate 402 back into the rotary table 4 to complete the reset.

[0035] Working principle: During the rotation of the rotary table 4, the ball bearings 102 make it more stable and smooth. The sliding contact 404 and the lifting slide 403 cooperate to prevent the die-cast base plate 402 from shifting during movement. This ensures that the inner wall of the rotary table 4 does not interfere with the outer wall of the annular lifting assembly 103, thus preventing the rotary table 4 from rotating stably. When the rotary table 4 rotates, it drives the die-cast base plate 402 to rotate synchronously. The annular lifting assembly 103 can push the die-cast base plate 402 upward through its own outer wall. The tension spring 405 can pull the die-cast base plate 402 back into the rotary table 4 after the rotary table 4 has rotated a full circle, thus completing the reset.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station intermittent rotary die-casting fixture, comprising a die-casting boss (1), characterized in that: A die-casting bracket (2) is fixedly connected to one side of the top surface of the die-casting boss (1), and a telescopic cylinder (201) is fixedly connected to the outer wall of the top of the die-casting bracket (2). A die-casting top plate (202) is fixedly connected to the outer wall of the telescopic end of the telescopic cylinder (201). A drive motor (3) is fixedly connected to the inner cavity of the die-casting boss (1), and an intermittent component (301) is fixedly connected to the outer wall of the output end of the drive motor (3). A central gear (302) is rotatably connected to the center of the inner cavity of the die-casting boss (1) through a rotating shaft, and a rotating table (4) is fixedly connected to the outer wall of the top of the central gear (302). A limit bracket (101) is fixedly connected to the inner wall of the die-casting boss (1), and ball bearings (102) are rotatably connected to both the upper and lower ends of the limit bracket (101). The top surface of the rotary table (4) is provided with multiple mold cavities (401), and the inner walls of the multiple mold cavities (401) are slidably connected with die-casting base plates (402). Multiple lifting grooves (403) are provided on both sides of the inner wall of the mold cavity (401). Multiple sliding protrusions (404) are provided on both sides of the outer wall of the die-casting base plate (402). Multiple tension springs (405) are sleeved in the inner cavity of the rotary table (4). An annular lifting assembly (103) is fixedly connected to the center of the inner cavity of the die-casting boss (1).

2. The multi-station intermittent rotary die-casting fixture according to claim 1, characterized in that: The intermittent component (301) is fixedly connected to a cylindrical component (303) on one side, and the cylindrical component (303) rotates around the drive motor (3). The outer wall of the central gear (302) is provided with multiple circular slots (304), and the inner diameter of the circular slots (304) is the same as the inner diameter of the cylindrical component (303).

3. The multi-station intermittent rotary die-casting fixture according to claim 1, characterized in that: The outer walls of multiple balls (102) are embedded inside the rotating platform (4), and the outer walls of the balls (102) are rotatably connected to the inside of the rotating platform (4). The inner wall of the rotating platform (4) is rotatably connected to the outer wall of the inner diameter of the limiting bracket (101).

4. The multi-station intermittent rotary die-casting fixture according to claim 1, characterized in that: The outer wall of the sliding contact (404) is in close contact with the inner wall of the lifting slide (403), and the outer wall of the sliding contact (404) is slidably connected to the inner wall of the lifting slide (403).

5. The multi-station intermittent rotary die-casting fixture according to claim 1, characterized in that: The annular lifting assembly (103) is perfectly circular when viewed from above, and the annular lifting assembly (103) is located at the center inside the rotating platform (4). When the rotating platform (4) rotates, it does not interfere with the outer wall of the annular lifting assembly (103).

6. The multi-station intermittent rotary die-casting fixture according to claim 5, characterized in that: The outer wall of the annular lifting component (103) abuts against the outer wall of the bottom surface of the die-cast base plate (402).

7. The multi-station intermittent rotary die-casting fixture according to claim 6, characterized in that: The outer wall of the top end of the tension spring (405) is fixedly connected to the bottom surface of the die-cast base plate (402), and the outer wall of the bottom end of the tension spring (405) is fixedly connected to the bottom end of the inner cavity of the rotary table (4).

Images