CN216182359U

CN216182359U - Involute internal spline precision gear hot extrusion die

Info

Publication number: CN216182359U
Application number: CN202122652417.4U
Authority: CN
Inventors: 李志东
Original assignee: Suzhou Wulaisheng Electromechanical Technology Co ltd
Current assignee: Suzhou Wulaisheng Electromechanical Technology Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-05
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a hot extrusion die for an involute internal spline precision gear, which comprises a die cavity, wherein a die cover is arranged on the upper surface of the die cavity, an injection pipe orifice is arranged at the middle position of the upper surface of the die cover, a material ejecting assembly is arranged between the lower surfaces of two sides of the die cavity, a concave base is arranged between two sides below the material ejecting assembly, the material ejecting assembly comprises limiting plates fixedly connected to the lower surfaces of two sides of the die cavity respectively, rotary tables are rotatably connected to the opposite surfaces of the two limiting plates, and adjusting rods are vertically and rotatably connected to the opposite surfaces of the lower sides of the two rotary tables. The utility model relates to the technical field of dies, and discloses a hot extrusion die for an involute internal spline precision gear.

Description

Involute internal spline precision gear hot extrusion die

Technical Field

The utility model relates to the technical field of dies, in particular to a hot extrusion die for an involute internal spline precision gear.

Background

The involute internal spline gear is a spline with key teeth on a cylindrical (or conical) surface and involute tooth profile, and the involute internal spline gear is produced by hot extruding raw materials into a die and then cooling and molding the die.

However, the existing die for machining involute internal spline gears has the following defects in the practical application process:

1. the existing mould for processing the gear is very inconvenient for demoulding the mould when in use; 2. when the mold is used for molding the gear, the molding effect is not ideal.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a hot extrusion die for an involute internal spline precision gear, which solves the problems that the die is very inconvenient to demould and the forming effect of the die is not ideal when the die is used for forming the gear.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a precision gear hot extrusion die of internal spline that gradually bursts at seams, includes the die cavity, the upper surface of die cavity is provided with the die cover, the upper surface intermediate position department of die cover is provided with the mouth of pipe of moulding plastics, be provided with the liftout subassembly between the both sides lower surface of die cavity, be provided with the spill base between the below both sides of liftout subassembly.

The material ejecting assembly comprises limiting plates fixedly connected to the lower surfaces of two sides of the die cavity respectively, rotary tables are rotatably connected to the opposite surfaces of the two limiting plates, adjusting rods are perpendicularly and rotatably connected to the opposite surfaces of the two rotary tables, the upper ends of the two adjusting rods are respectively rotated at the middle positions of two side surfaces of the die cover, rotating shafts corresponding to the two rotary tables are rotatably installed on the opposite surfaces of the two limiting plates, the opposite ends of the two rotating shafts are respectively and fixedly connected to the middle positions of the opposite surfaces of the two rotary tables, cams are fixedly connected to the opposite ends of the two rotating shafts, a fixing shaft is rotatably connected between the opposite surfaces of the lower ends of the two cams, a T-shaped adjusting shaft is rotatably connected to the upper end of the fixing shaft, and the upper end of the T-shaped adjusting shaft penetrates through the middle position of the lower surface of the die cavity and is fixedly connected with a top plate, and the outer surface of the T-shaped adjusting shaft is sleeved with a spring in a sliding way.

Preferably, hydraulic cylinders are fixedly arranged on the upper surfaces of the two sides of the concave base, and output shafts of the two hydraulic cylinders penetrate through the upper surface of the concave base in a sliding mode and are fixedly connected to the upper surfaces of the two sides of the die cover respectively.

Preferably, a clamping groove matched with the top plate is formed in the middle of the lower surface in the die cavity, and the top plate is clamped in the clamping groove in a sliding mode.

Preferably, the upper end and the lower end of the spring are respectively and fixedly connected with the lower surface of the die cavity and the inner side of the lower end of the T-shaped adjusting shaft, and the spring is a stainless steel component.

Preferably, four corners of the upper surface of the die cavity are vertically connected with the limiting shafts, and the upper ends of the four limiting shafts respectively penetrate through the four corners of the lower surface of the die cover in a sliding mode.

Preferably, a first hollow cavity is arranged around the inside of the die cavity, a water inlet and a water outlet are respectively arranged on the front surface of the die cavity, and the water inlet and the water outlet are communicated with the inside of the first hollow cavity.

Preferably, a hollow cavity II is arranged inside the injection molding pipe orifice, and resistance wires are uniformly wound on the inner wall of the hollow cavity II.

Advantageous effects

The utility model provides a hot extrusion die for an involute internal spline precision gear, which has the following beneficial effects compared with the prior art:

1. this precision gear hot extrusion die of internal spline that gradually bursts at seams through setting up the liftout subassembly, after the gear shaping, drives the in-process that the die cover uncapped at the pneumatic cylinder, can give ejecting with the mould for uncap and liftout go on in step, make things convenient for the ejection of compact of mould, also saved the time simultaneously.

2. This accurate gear hot extrusion die of internal spline that gradually bursts at seams through setting up well cavity one and well cavity two, when annotating the material in from the mouth of pipe that moulds plastics, the resistance wire can heat the material, prevents that the material from condensing, after the gear design, adds the cooling water in to well cavity one, can play fine cooling effect to the mould, and then makes the quick shaping of gear.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the construction of the ejector assembly of the present invention;

FIG. 3 is a schematic view of the internal structure of the mold cavity of the present invention.

In the figure: 1. a mold cavity; 101. a card slot; 102. a limiting shaft; 103. the hollow cavity I; 2. a mold cover; 3. injecting a pipe orifice; 31. a hollow cavity II; 32. a resistance wire; 4. a material ejecting component; 41. a limiting plate; 42. a turntable; 43. adjusting a rod; 44. a rotating shaft; 45. a cam; 46. a fixed shaft; 47. a T-shaped adjustment shaft; 48. a top plate; 49. a spring; 5. a concave base; 51. and a hydraulic cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a precision gear hot extrusion die of internal spline gradually bursts at seams, including die cavity 1, the upper surface of die cavity 1 is provided with die cover 2, the upper surface intermediate position department of die cover 2 is provided with the mouth of pipe 3 of moulding plastics, be provided with liftout subassembly 4 between the both sides lower surface of die cavity 1, be provided with spill base 5 between the below both sides of liftout subassembly 4, the equal fixed pneumatic cylinder 51 that is provided with in both sides upper surface of spill base 5, the upper surface that the output shaft of two pneumatic cylinders 51 all slided and passes spill base 5 and fixed connection respectively in the both sides upper surface of die cover 2, pneumatic cylinder 51 can drive die cover 2 and remove, the model of pneumatic cylinder 51 is CH/V, spacing axle 102 is all connected perpendicularly to four corners of the upper surface of die cavity 1, four corners of the lower surface of die cover 2 are slided respectively to the upper end of spacing axle 102, spacing axle 102 has played spacing effect to die cover 2.

Referring to fig. 2-3, in the embodiment of the present invention, the material ejecting assembly 4 includes two position limiting plates 41 respectively fixedly connected to the lower surfaces of the two sides of the mold cavity 1, two opposite sides of the two position limiting plates 41 are rotatably connected with rotating discs 42, two opposite sides of the two rotating discs 42 are vertically and rotatably connected with adjusting rods 43, the upper ends of the two adjusting rods 43 are respectively rotated at the middle positions of the two sides of the mold cover 2, two opposite sides of the two position limiting plates 41 are respectively and rotatably installed with rotating shafts 44 corresponding to the two rotating discs 42, one opposite ends of the two rotating shafts 44 are respectively and fixedly connected with cams 45, a fixed shaft 46 is rotatably connected between the opposite sides of the lower ends of the two cams 45, the upper end of the fixed shaft 46 is rotatably connected with a T-shaped adjusting shaft 47, the upper end of the T-shaped adjusting shaft 47 slidably passes through the middle position of the lower surface of the mold cavity 1 and is fixedly connected with a top plate 48, the outer surface of the T-shaped adjusting shaft 47 is sleeved and slidably provided with a spring 49, the middle position of the inner lower surface of the die cavity 1 is provided with a clamping groove 101 matched with the top plate 48, the top plate 48 is slidably clamped in the clamping groove 101, the top plate 48 is clamped in the clamping groove 101, in order not to obstruct the molding work of the mold, the upper and lower ends of the spring 49 are fixedly connected with the lower surface of the mold cavity 1 and the inner side of the lower end of the T-shaped adjusting shaft 47 respectively, and spring 49 is a stainless steel component, and when T shape regulating shaft 47 removed, spring 49 had played firm effect to it, and cavity one 103 was provided with all around in the inside of die cavity 1, and the front surface of die cavity 1 is provided with water inlet and delivery port respectively, and water inlet and delivery port all are linked together with the inside of cavity one 103, and the inside of mouth of pipe 3 of moulding plastics is provided with cavity two 31, and the inner wall of cavity two 31 is even twined and is installed resistance wire 32.

And those not described in detail in this specification are well within the skill of those in the art.

When the injection molding machine is used, raw materials are added into an injection molding pipe opening 3, a power supply of a resistance wire 32 in a hollow cavity II 31 is connected, the resistance wire 32 generates heat, the raw materials are heated, the raw materials are ensured to be in a molten state, then the materials enter a mold cavity 1 for shaping, cooling water is injected into a water inlet on the mold cavity 1 after the shaping, the cooling water enters a hollow cavity I103 in the mold cavity 1, a mold for shaping in the mold cavity 1 is cooled and rapidly cooled and shaped, after the cooling and shaping, the mold is discharged, a hydraulic cylinder 51 drives a mold cover 2 to move upwards to open the cover, so that the mold cover 2 can enable an adjusting rod 43 to drive a turntable 42 to rotate, the turntable 42 drives a cam 45 at one end of a rotating shaft 44 to rotate, further drives a fixing shaft 46 to do eccentric motion, and under the elasticity of a spring 49, the fixing shaft 46 can drive a T-shaped adjusting shaft 47 to move, the T-shaped adjusting shaft 47 slides upwards, and the top plate 48 at the upper end of the T-shaped adjusting shaft 47 pushes the die, so that the die is pushed, and the die stripping work is facilitated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a precision gear hot extrusion die of involute internal spline, includes die cavity (1), the upper surface of die cavity (1) is provided with die cover (2), the upper surface intermediate position department of die cover (2) is provided with injection molding pipe mouth (3), its characterized in that: an ejection component (4) is arranged between the lower surfaces of the two sides of the die cavity (1), and a concave base (5) is arranged between the two sides below the ejection component (4);

the ejection assembly (4) comprises limiting plates (41) fixedly connected to the lower surfaces of two sides of the die cavity (1) respectively, two limiting plates (41) are connected with rotary tables (42) in a rotating mode, the opposite sides of the two rotary tables (42) are connected with adjusting rods (43) in a rotating mode, the upper ends of the two adjusting rods (43) are respectively arranged at the middle positions of two side faces of the die cover (2) in a rotating mode, rotating shafts (44) corresponding to the two rotary tables (42) are installed on the opposite sides of the two limiting plates (41) in a penetrating and rotating mode, the opposite ends of the two rotating shafts (44) are respectively fixedly connected to the middle positions of the opposite sides of the two rotary tables (42), cams (45) are fixedly connected to the opposite ends of the two rotating shafts (44), and fixing shafts (46) are rotatably connected between the opposite sides of the lower ends of the two cams (45), the upper end of fixed axle (46) is rotated and is connected with T shape regulation axle (47), the upper end of T shape regulation axle (47) slides and passes lower surface intermediate position department and fixedly connected with roof (48) of die cavity (1), and the surface of T shape regulation axle (47) cup joints slidable mounting and has spring (49).

2. The precision gear hot extrusion die for involute internal splines of claim 1, wherein: the upper surfaces of two sides of the concave base (5) are fixedly provided with hydraulic cylinders (51), and output shafts of the two hydraulic cylinders (51) penetrate through the upper surface of the concave base (5) in a sliding mode and are fixedly connected to the upper surfaces of two sides of the die cover (2) respectively.

3. The precision gear hot extrusion die for involute internal splines of claim 1, wherein: the die cavity is characterized in that a clamping groove (101) matched with the top plate (48) is formed in the middle of the lower surface of the inner portion of the die cavity (1), and the top plate (48) is clamped in the clamping groove (101) in a sliding mode.

4. The precision gear hot extrusion die for involute internal splines of claim 1, wherein: the upper end and the lower end of the spring (49) are respectively fixedly connected with the lower surface of the die cavity (1) and the inner side of the lower end of the T-shaped adjusting shaft (47), and the spring (49) is a stainless steel component.

5. The precision gear hot extrusion die for involute internal splines of claim 1, wherein: the four corners of the upper surface of the die cavity (1) are vertically connected with the limiting shafts (102), and the upper ends of the four limiting shafts (102) respectively penetrate through the four corners of the lower surface of the die cover (2) in a sliding mode.

6. The precision gear hot extrusion die for involute internal splines of claim 1, wherein: the novel die is characterized in that a first hollow cavity (103) is arranged around the inside of the die cavity (1), a water inlet and a water outlet are respectively formed in the front surface of the die cavity (1), and the water inlet and the water outlet are communicated with the inside of the first hollow cavity (103).

7. The precision gear hot extrusion die for involute internal splines of claim 1, wherein: the inner part of the injection molding pipe orifice (3) is provided with a hollow cavity II (31), and the inner wall of the hollow cavity II (31) is uniformly wound with a resistance wire (32).