Retainer forming die

Abstract

The utility model relates to the technical field of forming dies, and discloses a retainer forming die which comprises an annular disc, a lower die holder and an upper die holder, the lower die holder is coaxially installed at the top of the annular disc, the upper die holder is located above the lower die holder, and meanwhile the annular disc, the lower die holder and the upper die holder are coaxially arranged. According to the retainer forming die, when a transverse plate moves upwards, a spring can be compressed, when an upper pressing cylinder moves upwards and an ejector rod relieves jacking of the bottom of the transverse plate, under the elastic reset effect of the spring, the transverse plate moves downwards with certain force, and it is guaranteed that a pressing ring ejects a formed workpiece out of the interior of the upper pressing cylinder; and the situation that a formed workpiece is clamped in the upper pressing cylinder due to friction force is avoided, the formed workpiece in the upper pressing cylinder is automatically discharged, the discharging difficulty is lowered, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forming molds, in particular to a retaining frame forming mold. Background Art

[0002] Cage (also called bearing cage, bearing retainer) refers to a bearing part that partially wraps all or part of the rolling elements and moves with them, isolating the rolling elements and usually guiding the rolling elements and keeping them in the bearing. There are many ways to form cages, such as stamping, injection molding, etc.

[0003] With regard to the existing related technologies, the inventors believe that the following defects often exist: when the retaining frame is manufactured by stamping, the disc needs to be stamped into a hollow conical ring first. After stamping, the molded workpiece will be stuck in the upper die seat. Since the molded workpiece is hidden in the upper die seat, it is necessary to manually remove the molded workpiece, and the molded workpiece cannot be seen during unloading, which makes unloading more inconvenient and affects work efficiency.

[0004] To this end, we propose a cage forming die. Utility Model Content

[0005] In view of the above-mentioned existing molded workpieces will be stuck in the upper die seat, and because the molded workpiece is hidden in the upper die seat, it needs to be removed manually, and the molded workpiece cannot be seen during unloading, which makes unloading more inconvenient and affects work efficiency. The utility model is proposed.

[0006] Therefore, the utility model aims to provide a cage forming die, the purpose of which is to automatically eject the formed workpiece from the upper die seat after the workpiece is formed, thereby improving the convenience of unloading.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a retainer forming die, comprising a circular ring disk, a lower die seat and an upper die seat, wherein the lower die seat is coaxially mounted on the top of the circular ring disk, and the upper die seat is located above the lower die seat, and at the same time, the circular ring disk, the lower die seat and the upper die seat are coaxially arranged;

[0008] The upper die seat comprises a flange, an upper pressure cylinder is coaxially welded to the bottom of the flange, a material ejection assembly is installed between the two sides of the outer wall of the upper pressure cylinder, and the movable end of the material ejection assembly is located at the lower end of the upper pressure cylinder.

[0009] As a preferred solution of a retainer forming mold described in the utility model, the top material assembly includes two convex plates welded to the peripheral surface of the upper pressure cylinder, the convex plates are slidably connected to a T-rod through a sliding hole opened thereon, a cross plate is welded to the bottom end of the T-rod, and one end of the two cross plates are located inside the upper pressure cylinder, and a pressure ring is welded between the bottoms of the two cross plates.

[0010] As a preferred solution of the retainer forming mold described in the utility model, upper pressing cylinders for the connecting cavity to pass through are provided on both sides of the outer wall of the upper pressing cylinder.

[0011] As a preferred solution of the retainer forming mold described in the utility model, wherein: the rod portion of the T-bar is sleeved with a spring, and the spring is located between the opposite surfaces of the convex plate and the transverse plate.

[0012] As a preferred solution of the retainer forming mold described in the utility model, a conical cavity is opened at the bottom of the pressing ring, and the bottom edge of the conical cavity contacts the inner wall surface of the upper pressing cylinder.

[0013] As a preferred solution of the retainer forming mold described in the utility model, the lower mold base includes a circular ring block installed on the top of the circular ring disk, the top of the circular ring disk is respectively installed with an outer shell and a forming cylinder, a forming cavity is formed between the inner wall surface of the outer shell and the outer wall surface of the forming cylinder, and push rods are provided at the top of the circular ring disk and on both sides of the outer shell.

[0014] As a preferred solution of the retainer forming mold described in the utility model, communication grooves are provided at upper positions on both sides of the shell.

[0015] As a preferred solution of the retainer forming mold described in the utility model, a positioning hole is opened on the top of the push rod, and a positioning rod matched with the positioning hole is fixed on the bottom of the cross plate and at one end away from the upper pressure cylinder.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model places the disc on the top of the forming cylinder, and the peripheral surface of the disc contacts the inner wall surface of the shell, so that the disc and the forming cylinder are in a coaxial state, and the disc is self-positioned to ensure the stamping accuracy of the disc required later.

[0018] 2. In the utility model, when the upper pressure cylinder descends and has not yet entered the interior of the forming cavity, the top of the push rod first contacts the bottom of the horizontal plate. As the upper pressure cylinder continues to descend, the push rod moves upward against the horizontal plate, and the horizontal plate drives the pressure ring to move upward inside the upper pressure cylinder, thereby preventing the pressure ring from blocking the disc when the upper pressure cylinder presses downward to form the disc and affecting the normal forming of the workpiece.

[0019] 3. In the utility model, when the horizontal plate moves upward, it will also compress the spring. When the upper pressure cylinder moves upward and the push rod releases the lifting of the bottom of the horizontal plate, the horizontal plate moves downward with a certain force under the elastic restoring action of the spring, ensuring that the pressure ring pushes the formed workpiece out of the interior of the upper pressure cylinder to avoid the formed workpiece being stuck in the interior of the upper pressure cylinder due to friction, and also realizing automatic unloading of the formed workpiece inside the upper pressure cylinder, reducing the difficulty of unloading and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 The utility model is a schematic diagram of the overall combined structure of a cage forming die.

[0022] Figure 2 It is a schematic structural diagram of the overall separation of a retainer forming mold of the utility model.

[0023] Figure 3 The utility model is a schematic structural diagram of a lower die seat of a retainer forming die.

[0024] Figure 4 The utility model is a schematic structural diagram of an upper die seat of a retainer forming die.

[0025] Figure 5 The utility model is a schematic cross-sectional structure diagram of an upper pressing cylinder of a retainer forming die.

[0026] Description of reference numerals:

[0027] 1. Ring disk; 2. Lower die seat; 21. Ring block; 22. Shell; 23. Connecting groove; 24. Molding cavity; 25. Molding cylinder; 3. Upper die seat; 31. Flange; 32. Upper pressure cylinder; 33. Connecting cavity; 34. Ejector assembly; 341. Pressing ring; 342. Horizontal plate; 343. Positioning rod; 344. T-bar; 345. Spring; 346. Convex plate; 347. Conical cavity; 4. Ejector rod; 41. Positioning hole. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Reference Figure 1-5, which is an embodiment of the utility model, provides a cage forming mold, which includes a circular ring disk 1, a lower die base 2 and an upper die base 3, wherein the lower die base 2 is coaxially mounted on the top of the circular ring disk 1, and the upper die base 3 is located above the lower die base 2, and at the same time, the circular ring disk 1, the lower die base 2 and the upper die base 3 are coaxially arranged;

[0030] The upper die seat 3 includes a flange 31 , an upper pressing cylinder 32 is coaxially welded to the bottom of the flange 31 , a material ejection assembly 34 is installed between the two sides of the outer wall of the upper pressing cylinder 32 , and the movable end of the material ejection assembly 34 is located at the lower end inside the upper pressing cylinder 32 .

[0031] The lifting assembly 34 includes two convex plates 346 welded to the peripheral surface of the upper pressure cylinder 32, and the convex plate 346 is slidably connected to the T-bar 344 through a sliding hole opened thereon. A cross plate 342 is welded to the bottom end of the T-bar 344, and one end of the two cross plates 342 is located inside the upper pressure cylinder 32, and a pressure ring 341 is welded between the bottoms of the two cross plates 342.

[0032] Both sides of the outer wall of the upper pressure cylinder 32 are provided with an upper pressure cylinder 32 for the communication cavity 33 to pass through.

[0033] The rod portion of the T-shaped rod 344 is sleeved with a spring 345 , and the spring 345 is located between the convex plate 346 and the opposite surface of the transverse plate 342 .

[0034] When the cross plate 342 moves upward, it will also compress the spring 345. When the upper pressure cylinder 32 moves upward and the push rod 4 releases the lifting of the bottom of the cross plate 342, the elastic reset action of the spring 345 causes the cross plate 342 to move downward with a certain force, ensuring that the pressing ring 341 pushes the formed workpiece out of the interior of the upper pressure cylinder 32, avoiding the formed workpiece from being stuck in the interior of the upper pressure cylinder 32 due to friction, and also realizing automatic unloading of the formed workpiece inside the upper pressure cylinder 32, reducing the difficulty of unloading and improving work efficiency.

[0035] A conical cavity 347 is formed at the bottom of the pressing ring 341 , and the bottom edge of the conical cavity 347 contacts the inner wall surface of the upper pressing cylinder 32 .

[0036] The lower die base 2 includes a circular ring block 21 mounted on the top of the circular ring disk 1. The top of the circular ring disk 1 is respectively mounted with a shell 22 and a forming cylinder 25, and the forming cylinder 25 is located in the inner cavity of the shell 22. A forming cavity 24 is formed between the inner wall surface of the shell 22 and the outer wall surface of the forming cylinder 25. The circular disk is placed on the top of the forming cylinder 25, and the peripheral surface of the circular disk is in conflict with the inner wall surface of the shell 22, so that the circular disk and the forming cylinder 25 are in a coaxial state, so as to realize self-positioning of the circular disk, so as to ensure that the circular disk can be aligned with the inner wall surface of the shell 22. In order to improve the stamping accuracy of the disk, a push rod 4 is provided on the top of the annular disk 1 and on both sides of the outer shell 22. When the upper pressing cylinder 32 has not entered the interior of the forming cavity 24, the top of the push rod 4 first contacts the bottom of the cross plate 342. As the upper pressing cylinder 32 continues to descend, the push rod 4 moves upward against the cross plate 342. The cross plate 342 drives the pressing ring 341 to move upward inside the upper pressing cylinder 32, so as to prevent the pressing ring 341 from blocking the upper pressing cylinder 32 when it presses the disk downward to form the disk, thereby affecting the normal forming of the workpiece.

[0037] Communication grooves 23 are provided at upper positions on both sides of the shell 22. The arrangement of the communication grooves 23 on both sides facilitates the removal of the disc placed on the top of the forming cylinder 25.

[0038] A positioning hole 41 is provided at the top of the push rod 4, and a positioning rod 343 adapted to the positioning hole 41 is fixed to the bottom of the cross plate 342 and at one end away from the upper pressure cylinder 32. When the push rod 4 is pressed against the bottom of the cross plate 342, the positioning rod 343 will enter the interior of the positioning hole 41 for positioning, so as to ensure the alignment effect of the lower die base 2 and the upper die base 3, thereby ensuring the accuracy of workpiece forming.

[0039] During use, the upper die holder 3 is mounted on the movable end of the hydraulic cylinder, and the disc is placed on the top of the forming cylinder 25, with the peripheral surface of the disc in contact with the inner wall surface of the housing 22;

[0040] The hydraulic cylinder drives the upper die seat 3 to move downward, and the upper pressing cylinder 32 presses on the disc piece to form the disc piece, and the excess disc piece material is discharged to the outside through the interior of the forming cylinder 25 and the inner hole of the annular disk 1, and the formed workpiece is located inside the upper pressing cylinder 32;

[0041] When the upper pressing cylinder 32 descends, before the upper pressing cylinder 32 enters the interior of the molding cavity 24, the top of the push rod 4 first contacts the bottom of the horizontal plate 342. As the upper pressing cylinder 32 continues to descend, the push rod 4 moves upward against the horizontal plate 342, and the horizontal plate 342 drives the pressing ring 341 to move upward inside the upper pressing cylinder 32.

[0042] When the cross plate 342 moves upward, it will also compress the spring 345. When the upper pressure cylinder 32 moves upward and the push rod 4 releases the lifting of the bottom of the cross plate 342, the elastic return action of the spring 345 causes the cross plate 342 to move downward with a certain force, ensuring that the pressing ring 341 pushes the formed workpiece out of the interior of the upper pressure cylinder 32.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A cage forming die, comprising a circular ring disk (1), a lower die seat (2) and an upper die seat (3), characterized in that: The lower die base (2) is coaxially mounted on the top of the annular disk (1), and the upper die base (3) is located above the lower die base (2). At the same time, the annular disk (1), the lower die base (2) and the upper die base (3) are coaxially arranged; The upper die seat (3) comprises a flange (31), an upper pressure cylinder (32) is coaxially welded to the bottom of the flange (31), a material ejection assembly (34) is installed between the two sides of the outer wall of the upper pressure cylinder (32), and the movable end of the material ejection assembly (34) is located at the lower end inside the upper pressure cylinder (32).

2. A cage forming mold according to claim 1, characterized in that: The lifting assembly (34) includes two convex plates (346) welded to the peripheral surface of the upper pressure cylinder (32), and the convex plate (346) is slidably connected to a T-shaped rod (344) through a sliding hole opened thereon. A cross plate (342) is welded to the bottom end of the T-shaped rod (344), and one end of the two cross plates (342) are both located inside the upper pressure cylinder (32), and a pressure ring (341) is welded between the bottoms of the two cross plates (342).

3. A cage forming mold according to claim 2, characterized in that: Both sides of the outer wall of the upper pressure cylinder (32) are provided with an upper pressure cylinder (32) for the connecting cavity (33) to pass through.

4. A cage forming mold according to claim 3, characterized in that: The rod portion of the T-shaped rod (344) is sleeved with a spring (345), and the spring (345) is located between the opposite surfaces of the convex plate (346) and the transverse plate (342).

5. A cage forming mold according to claim 4, characterized in that: A conical cavity (347) is formed at the bottom of the pressing ring (341), and the bottom edge of the conical cavity (347) is in contact with the inner wall surface of the upper pressing cylinder (32).

6. A cage forming mold according to claim 5, characterized in that: The lower die base (2) comprises an annular block (21) mounted on the top of the annular disk (1); an outer shell (22) and a forming cylinder (25) are respectively mounted on the top of the annular disk (1); a forming cavity (24) is formed between the inner wall surface of the outer shell (22) and the outer wall surface of the forming cylinder (25); and push rods (4) are provided on the top of the annular disk (1) and on both sides of the outer shell (22).

7. A cage forming mold according to claim 6, characterized in that: Communication grooves (23) are provided at upper positions on both sides of the shell (22).

8. The retainer forming mold according to claim 7, characterized in that: A positioning hole (41) is formed at the top of the push rod (4), and a positioning rod (343) adapted to the positioning hole (41) is fixed at the bottom of the horizontal plate (342) and at one end away from the upper pressure cylinder (32).

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