Automatic demolding mold for retainer

Abstract

The utility model relates to the technical field of injection molds, and discloses an automatic demolding mold for a retainer, which comprises a base, the upper surface of the base is fixedly connected with two supporting blocks, the upper surfaces of the two supporting blocks are fixedly connected with a lower mold seat, the upper surface of the lower mold seat is provided with a cylindrical mold groove, and the lower surface of the lower mold seat is provided with a lower mold groove. A cylindrical shell is fixedly connected to the inner bottom wall of the mold groove, and a plurality of limiting holes are formed in the side face of the cylindrical shell. According to the utility model, the cylindrical shell is arranged in the mold groove of the lower mold base, and when the retainer is molded, the plurality of mold movable blocks can be driven by the electric telescopic rod to extend out of the side surface of the cylindrical shell and are in contact with the inner wall of the mold groove, so that injection molding fluid in the mold groove forms the shape of the retainer; and after the retainer is formed and solidified, the mold movable block is reset and moved into the cylindrical shell, so that demolding and discharging of the retainer are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and more specifically to an automatic demoulding mold for a retaining frame. Background Art

[0002] Cage (i.e. bearing cage, also known as bearing retainer) refers to the bearing parts that partially wrap all or part of the rolling elements and move with them, which is used to isolate the rolling elements and usually guide the rolling elements and keep them in the bearing. Non-metallic cage materials mainly include polymers and their composite materials, including nylon, phenolic tape, polytetrafluoroethylene, etc. Polymer materials have good strength and elasticity matching, so cages made of polymer materials are widely used.

[0003] The patent publication number is CN216938234U, which is a cage forming mold, comprising a forming mold body; a forming plate is provided at the lower end of the cylinder shaft of the oil cylinder; an upper mold piece is provided at the lower end of the forming plate; slide rails are provided on both sides of the upper end surface of the middle forming base, and a lower mold piece is embedded in the slide rails for sliding connection; and a plurality of cage forming ring grooves are provided on the upper end surface of the lower mold piece. The cage forming mold provided by the utility model is not only convenient for feeding and removing materials from the lower mold piece, but also allows cold air to be introduced to cool the hollow forming base and the forming mold body.

[0004] However, since a number of bearing through holes are arranged on the surface of the retaining frame, it is necessary to arrange a number of mold blocks in the mold groove to reserve the positions of the bearing through holes during the mold forming process. Therefore, when the retaining frame is demolded and discharged, the mold blocks with fixed structures are prone to breakage and damage to the retaining frame, causing inconvenience in discharge and affecting the processing quality of the finished product. Therefore, it is necessary to improve this problem existing in the retaining frame mold in the above patent documents. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides an automatic demoulding mold for a retainer to solve the problems existing in the above background technology.

[0006] The utility model provides the following technical scheme: a retainer automatic demoulding mold, comprising a base, the upper surface of the base is fixedly connected with two support blocks, the upper surfaces of the two support bars are fixedly connected with a lower mold base, the upper surface of the lower mold base is provided with a cylindrical mold groove, the inner bottom wall of the mold groove is fixedly connected with a cylindrical shell, the side of the cylindrical shell is provided with a plurality of limiting holes, the inner wall of the limiting hole is slidably connected with a mold movable block, the mold movable block is used for forming the bearing limiting hole on the surface of the retainer, the surface of the upper mold fixed plate is provided with a circular hole, the size of the circular hole matches the cylindrical shell, the mold cover plate can be used to close the mold groove, so that the mold groove forms a sealed state, and then the injection tube can be used to transport fluid into the mold groove;

[0007] A fixed column is fixedly connected at the inner center of the cylindrical shell, a plurality of guide rods are fixedly arranged on the surface of the fixed column, a linkage plate is slidingly sleeved on the surface of the guide rod, the lower surface of the linkage plate is fixedly connected to the upper surface of the mold movable block, the top end of the guide rod is fixedly connected to a trapezoidal push block, the upper surface of the cylindrical shell is fixedly connected to an electric telescopic rod, the telescopic end of the electric telescopic rod extends to the interior of the cylindrical shell and is fixedly connected to a conical disk, the arc surface of the conical disk overlaps the inclined surface of the trapezoidal push block.

[0008] Furthermore, a demoulding motor is embedded and installed on the upper surface of the base, and the output shaft of the demoulding motor is fixedly connected with a lifting screw, the top end of the lifting screw is rotatably connected to the lower surface of the lower mold base, and the surface of the lifting screw is threadedly connected with a movable top plate, and the upper surface of the movable top plate is fixedly connected with a plurality of demoulding ejector rods, and the inner bottom wall of the mold groove is provided with a plurality of ejector rod limiting holes, and the demoulding ejector rods are slidably connected with the inner walls of the ejector rod limiting holes. By arranging a demoulding ejector rod and a demoulding motor at the bottom of the lower mold base, when the retaining frame is demoulded, the demoulding motor can be used to drive the lifting screw to rotate, thereby driving the movable top plate to move upward, and at the same time driving a plurality of demoulding ejector rods to eject a small part of the retaining frame in the mold groove, thereby realizing rapid material discharge.

[0009] Furthermore, a cooling cavity is provided inside the lower mold base, the cooling cavity is wrapped around the mold groove, and the interior of the cooling cavity is filled with cooling water. A cooling box is fixedly connected to the upper surface of the base, and a semiconductor refrigeration plate is embedded and installed on the inner wall of the cooling box. A circulating pump is fixedly provided on the left side of the cooling box, and the input end of the circulating pump extends to the interior of the cooling box, and the output end of the circulating pump is fixedly connected to a first guide tube. By providing a cooling cavity inside the lower mold base, the cooling water inside the cooling cavity can be used to form a wrapping structure for the mold groove, thereby uniformly cooling the fluid in the mold groove, and then the circulating pump, the first guide tube and the second guide tube are used to circulate the cooling water in the cooling box and the cooling cavity, and at the same time, the semiconductor refrigeration plate is used to continuously cool and cool the cooling water, which is conducive to maintaining a stable cooling effect of the cooling water.

[0010] Furthermore, one end of the first guide pipe away from the circulation pump extends to the interior of the cooling cavity, a second guide pipe is embedded on the right side of the cooling box, one end of the second guide pipe away from the cooling box extends to the interior of the cooling cavity, a cooling fan is embedded on the back of the cooling box, and the air inlet end of the cooling fan corresponds to the heat dissipation surface of the semiconductor refrigeration plate.

[0011] Furthermore, a return spring is sleeved on the surface of the guide rod, one end of the return spring is fixedly connected to the surface of the linkage plate, and the other end of the return spring is fixedly connected to the inner wall of the cylindrical shell.

[0012] Furthermore, the upper surface of the base is fixedly connected with two guide columns symmetrically positioned to each other, the surface of the guide columns is slidably provided with an upper mold fixing plate, the lower surface of the upper mold fixing plate is fixed with a mold cover plate, the mold cover plate is in a circular ring shape, and the mold cover plate matches the mold groove.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model provides a cylindrical shell inside the mold groove of the lower mold base. When molding the retainer, an electric telescopic rod can be used to drive a plurality of mold movable blocks to extend from the side of the cylindrical shell, and the mold movable blocks can be brought into contact with the inner wall of the mold groove, so that the injection fluid inside the mold groove forms the shape of the retainer, and then the retainer is injection molded. After the retainer is molded and solidified, the mold movable blocks are reset and moved to the inside of the cylindrical shell, so that the retainer can be demolded and discharged easily, thereby preventing the retainer from being damaged during discharge.

[0015] 2. The utility model is provided with a demoulding ejector rod and a movable top plate at the bottom of the lower die base. When the retaining frame is demoulded, the demoulding motor can be used to drive the movable top plate to move upward, thereby driving the demoulding ejector rod to push the retaining frame in the mold groove upward to an end distance, thereby facilitating the staff to take the retaining frame out of the mold groove, thereby achieving the purpose of convenient and fast material discharging.

[0016] 3. The utility model provides a cooling cavity inside the lower mold base, and can use the cooling water inside the cooling cavity to form a wrapping structure for the mold groove, and then use a circulating pump to circulate the cooling water in the cooling box and the cooling cavity, which is beneficial for the cooling water to maintain a stable cooling effect and improve the efficiency of cooling the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional front view structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional rear view structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the front section structure of the lower die base of the utility model;

[0020] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0021] Figure 5 It is a schematic diagram of the top-section structure of the lower die base of the utility model.

[0022] The accompanying drawings are marked as follows: 1. base; 2. lower mold base; 3. mold groove; 4. cylindrical shell; 5. mold movable block; 6. fixed column; 7. guide rod; 8. linkage plate; 9. electric telescopic rod; 10. conical disk; 11. demoulding motor; 12. lifting screw; 13. movable top plate; 14. demoulding ejector; 15. cooling cavity; 16. cooling box; 17. circulating pump; 18. first guide tube; 19. second guide tube; 20. reset spring; 21. cooling fan; 22. semiconductor refrigeration plate; 23. upper mold fixing plate; 24. mold cover plate; 25. trapezoidal push block. Implementation

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the automatic demolding mold of the retainer involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Reference Figure 1-5 The utility model provides an automatic demoulding mold for a retainer, including a base 1, the upper surface of the base 1 is fixedly connected to two support blocks, the upper surfaces of the two support bars are fixedly connected to a lower mold base 2, the upper surface of the lower mold base 2 is provided with a cylindrical mold groove 3, the front side of the lower mold base 2 is embedded with an injection tube, and the output port of the injection tube extends to the interior of the mold groove 3.

[0025] The upper surface of the base 1 is fixedly connected with two guide columns symmetrically positioned to each other, and an upper mold fixing plate 23 is slidably provided on the surface of the guide column, and a mold cover plate 24 is fixed to the lower surface of the upper mold fixing plate 23. The mold cover plate 24 is in a circular ring shape, and the mold cover plate 24 matches the mold groove 3. A circular hole is opened on the surface of the upper mold fixing plate 23, and the size of the circular hole matches the cylindrical shell 4. The mold groove 3 can be closed by using the mold cover plate 24, so that the mold groove 3 is in a sealed state, and then the injection tube can be used to transport fluid into the mold groove 3.

[0026] A demoulding motor 11 is embedded in the upper surface of the base 1, and the output shaft of the demoulding motor 11 is fixedly connected to a lifting screw 12, the top of the lifting screw 12 is rotatably connected to the lower surface of the lower mold base 2, and the surface of the lifting screw 12 is threadedly connected to a movable top plate 13.

[0027] A plurality of demoulding ejector pins 14 are fixedly connected to the upper surface of the movable top plate 13 , a plurality of ejector pin limiting holes are opened on the inner bottom wall of the mold groove 3 , and the demoulding ejector pins 14 are slidably connected to the inner walls of the ejector pin limiting holes.

[0028] It is worth mentioning that, by arranging a demolding ejector rod 14 and a demolding motor 11 at the bottom of the lower mold base 2, when the retaining frame is demolded, the demolding motor 11 can be used to drive the lifting screw 12 to rotate, thereby driving the movable top plate 13 to move upward, and at the same time drive a number of demolding ejector rods 14 to push out a small part of the retaining frame in the mold groove 3, thereby facilitating the staff to take the retaining frame out of the mold groove 3 and realize rapid material discharge.

[0029] The inner bottom wall of the mold groove 3 is fixedly connected with a cylindrical shell 4, and a plurality of limiting holes are opened on the side of the cylindrical shell 4. The inner wall of the limiting hole is slidably connected with a mold movable block 5, and the mold movable block 5 is used to form the bearing limiting holes on the surface of the retainer.

[0030] A fixed column 6 is fixedly connected to the inner center of the cylindrical shell 4, and a plurality of guide rods 7 are fixedly arranged on the surface of the fixed column 6. A linkage plate 8 is slidingly sleeved on the surface of the guide rod 7. The lower surface of the linkage plate 8 is fixedly connected to the upper surface of the mold movable block 5. A return spring 20 is sleeved on the surface of the guide rod 7. One end of the return spring 20 is fixedly connected to the surface of the linkage plate 8, and the other end of the return spring 20 is fixedly connected to the inner wall of the cylindrical shell 4. A trapezoidal push block 25 is fixedly connected to the top of the guide rod 7. An electric telescopic rod 9 is fixedly connected to the upper surface of the cylindrical shell 4. The telescopic end of the electric telescopic rod 9 extends to the interior of the cylindrical shell 4 and is fixedly connected to a conical disk 10. The arc surface of the conical disk 10 overlaps the inclined surface of the trapezoidal push block 25.

[0031] It is worth mentioning that by arranging a cylindrical shell 4 inside the mold groove 3 of the lower mold base 2, when molding the retaining frame, the electric telescopic rod 9 is first used to drive the conical disk 10 to move downward, and the conical disk 10 drives a number of trapezoidal push blocks 25 to move, and at the same time drives the linkage plate 8 to move horizontally on the surface of the guide rod 7, thereby driving the mold movable block 5 to extend from the side of the cylindrical shell 4, so that the mold movable block 5 contacts the inner wall of the mold groove 3, so that the fluid inside the mold groove 3 forms the structural shape of the retaining frame, and then shapes the fluid. After the retaining frame is formed and solidified, the mold movable block 5 is reset to the inside of the cylindrical shell 4, so as to facilitate the demolding and discharging of the retaining frame, thereby preventing the retaining frame from being damaged during discharging.

[0032] A cooling cavity 15 is provided inside the lower mold base 2, and the cooling cavity 15 is wrapped around the mold groove 3. The interior of the cooling cavity 15 is filled with cooling water. A cooling box 16 is fixedly connected to the upper surface of the base 1, and a semiconductor cooling sheet 22 is embedded in the inner wall of the cooling box 16. A cooling fan 21 is embedded on the back of the cooling box 16, and the air inlet end of the cooling fan 21 corresponds to the heat dissipation surface of the semiconductor cooling sheet 22.

[0033] A circulation pump 17 is fixedly disposed on the left side of the cooling box 16 . The input end of the circulation pump 17 extends into the interior of the cooling box 16 , and the output end of the circulation pump 17 is fixedly connected to a first flow guide pipe 18 .

[0034] One end of the first flow guide pipe 18 away from the circulation pump 17 extends into the cooling cavity 15 . A second flow guide pipe 19 is embedded on the right side of the cooling box 16 . One end of the second flow guide pipe 19 away from the cooling box 16 extends into the cooling cavity 15 .

[0035] It is worth mentioning that by providing a cooling cavity 15 inside the lower mold base 2, the cooling water inside the cooling cavity 15 can be used to form a wrapping structure for the mold groove 3, so as to evenly cool the fluid in the mold groove 3, and then the circulating pump 17, the first guide tube 18 and the second guide tube 19 are used to circulate the cooling water in the cooling box 16 and the cooling cavity 15, and at the same time, the semiconductor refrigeration plate 22 is used to continuously cool and cool the cooling water, which is beneficial to maintaining a stable cooling effect of the cooling water.

[0036] Finally, it should be noted that: the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0037] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A retainer automatic demoulding mold, comprising a base (1), characterized in that: Two support blocks are fixedly connected to the upper surface of the base (1), and a lower die seat (2) is fixedly connected to the upper surfaces of the two support blocks. A cylindrical die groove (3) is provided on the upper surface of the lower die seat (2), and a cylindrical shell (4) is fixedly connected to the inner bottom wall of the die groove (3). A plurality of limiting holes are provided on the side of the cylindrical shell (4), and a mold movable block (5) is slidably connected to the inner wall of the limiting hole. The mold movable block (5) is used to form the bearing limiting hole on the surface of the retainer; A fixed column (6) is fixedly connected to the inner center of the cylindrical shell (4), a plurality of guide rods (7) are fixedly arranged on the surface of the fixed column (6), a linkage plate (8) is slidably sleeved on the surface of the guide rod (7), the lower surface of the linkage plate (8) is fixedly connected to the upper surface of the mold movable block (5), the top of the guide rod (7) is fixedly connected to a trapezoidal push block (25), the upper surface of the cylindrical shell (4) is fixedly connected to an electric telescopic rod (9), the telescopic end of the electric telescopic rod (9) extends to the inside of the cylindrical shell (4) and is fixedly connected to a conical disk (10), the arc surface of the conical disk (10) overlaps the inclined surface of the trapezoidal push block (25).

2. The automatic demoulding mold for the retainer according to claim 1, characterized in that: A demoulding motor (11) is embedded and installed on the upper surface of the base (1); the output shaft of the demoulding motor (11) is fixedly connected to a lifting screw (12); the top end of the lifting screw (12) is rotatably connected to the lower surface of the lower mold base (2); and the surface of the lifting screw (12) is threadedly connected to a movable top plate (13).

3. The automatic demoulding mold for the retainer according to claim 2, characterized in that: A plurality of demoulding ejector pins (14) are fixedly connected to the upper surface of the movable top plate (13), a plurality of ejector pin limiting holes are formed on the inner bottom wall of the mold groove (3), and the demoulding ejector pins (14) are slidably connected to the inner walls of the ejector pin limiting holes.

4. The automatic demoulding mold for the retainer according to claim 1, characterized in that: A cooling cavity (15) is provided inside the lower die base (2), the cooling cavity (15) wraps around the die groove (3), and the interior of the cooling cavity (15) is filled with cooling water.

5. The automatic demoulding mold for the retainer according to claim 4, characterized in that: A cooling box (16) is fixedly connected to the upper surface of the base (1), a semiconductor cooling sheet (22) is embedded in the inner wall of the cooling box (16), a circulating pump (17) is fixedly arranged on the left side of the cooling box (16), an input end of the circulating pump (17) extends into the interior of the cooling box (16), and an output end of the circulating pump (17) is fixedly connected to a first flow guide pipe (18).

6. The automatic demoulding mold for the retainer according to claim 5, characterized in that: One end of the first flow guide tube (18) away from the circulation pump (17) extends to the interior of the cooling cavity (15); a second flow guide tube (19) is embedded on the right side of the cooling box (16); one end of the second flow guide tube (19) away from the cooling box (16) extends to the interior of the cooling cavity (15).

7. The automatic demoulding mold for the retainer according to claim 1, characterized in that: A return spring (20) is sleeved on the surface of the guide rod (7), one end of the return spring (20) is fixedly connected to the surface of the linkage plate (8), and the other end of the return spring (20) is fixedly connected to the inner wall of the cylindrical shell (4).

8. The automatic demoulding mold for the retainer according to claim 5, characterized in that: A heat dissipation fan (21) is embedded in the back of the cooling box (16), and an air inlet end of the heat dissipation fan (21) corresponds to a heat dissipation surface of the semiconductor cooling sheet (22).

9. The automatic demoulding mold for the retainer according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to two guide columns symmetrically positioned to each other, an upper mold fixing plate (23) is slidably provided on the surface of the guide columns, a mold cover plate (24) is fixed to the lower surface of the upper mold fixing plate (23), the mold cover plate (24) is in a circular ring shape, and the mold cover plate (24) matches the mold groove (3).

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