CN217098714U

CN217098714U - Rifling thread hank tooth drawing of patterns mould

Info

Publication number: CN217098714U
Application number: CN202220069181.3U
Authority: CN
Inventors: 赵顺相
Original assignee: Fujian Meikexin New Material Technology Co ltd
Current assignee: Fujian Meikexin New Material Technology Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-08-02
Anticipated expiration: 2032-01-12

Abstract

The utility model provides a rifling thread twisting tooth demoulding mould, which comprises a front mould component, a rear mould component, a mould core component, a rifling thread screw, a rifling nut, a driving gear, a driven gear and a thread forming component; the thread forming assemblies are provided with a plurality of groups and respectively comprise a core column and a core column gear, the core column is rotatably assembled on the rear die assembly, the front end of the core column is provided with threads and is inserted into a forming cavity of the die core assembly, and the core column gear is sleeved on the core column; the rifling screw is parallel to the die opening and closing direction of the die and is fixed on the front die assembly; the rifling nut is sleeved on the rifling screw rod, the driving gear is sleeved on the rifling nut, and the driving gear is in transmission connection with the core column gears of the thread forming assemblies through the driven gears. The die opening action of the die can be enabled to synchronously drive the twisting teeth of the core column to be demoulded.

Description

Rifling thread hank tooth drawing of patterns mould

Technical Field

The utility model relates to a mould field, concretely relates to rifling hank tooth drawing of patterns mould.

Background

The mold is various molds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting and the like in industrial production. Wherein the injection mold is used for molding plastic products. When injection moulding has the product of screw, need insert the stem that takes the screw thread, twist the tooth drawing of patterns after the completion. In the prior art, the tooth twisting and demoulding of a core column is generally independently driven by a motor; this kind of mode is bulky, structural configuration is comparatively complicated, and the drive of motor and the cooperation precision requirement of the drawing of patterns action of mould are high, and the debugging time is long in earlier stage, influences production.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a rifling hank tooth drawing of patterns mould cancels the independent drive of motor, changes the hank tooth drawing of patterns of the die sinking action synchronous drive stem by the mould.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

a rifling thread twisting tooth demoulding mould comprises a front mould component, a rear mould component, a mould core component, a rifling screw rod, a rifling nut, a driving gear, a driven gear and a thread forming component; the screw thread forming assembly is provided with a plurality of groups and comprises a core column and a core column gear, the core column is rotatably assembled on the rear die assembly, the front end of the core column is provided with screw threads and is inserted into a forming cavity of the core assembly, and the core column gear is sleeved on the core column; the rifling screw is parallel to the die opening and closing direction of the die and is fixed on the front die assembly; the rifling nut is sleeved on the rifling screw rod, the driving gear is sleeved on the rifling nut, and the driving gear is in transmission connection with the core column gears of the thread forming assemblies through the driven gears.

Furthermore, the front mold assembly comprises a first front mold plate and a second front mold plate, the second front mold plate is positioned at the rear end of the first front mold plate, the rifling screw rod penetrates through the second front mold plate, the rifling screw rod is provided with a D-shaped nut, the second front mold plate is provided with a D-shaped limiting groove, and the nut of the rifling screw rod is assembled in the limiting groove of the second front mold plate to realize circumferential limiting and fixing; the first front template covers the limiting groove to realize axial limiting and fixing of the rifling screw.

Furthermore, a bearing is further sleeved on the rifling nut and is rotatably assembled on the rear die assembly through the bearing.

Furthermore, the number of the driven gears is two, and the two driven gears are respectively a first driven gear and a second driven gear; the first driven gear is meshed with the driving gear and is also meshed with the core column gear of at least one group of thread forming assemblies; the second driven gear is meshed with the stem gear of the at least one group of thread forming assemblies, and the stem gear of the at least one group of thread forming assemblies is meshed with the first driven gear and the second driven gear simultaneously.

Furthermore, a bearing is sleeved at the middle position of the core column and is rotatably assembled on the rear die assembly through the bearing; the core column gear is sleeved on the rear end of the core column.

Furthermore, the rear die assembly is provided with an ejector plate and an ejector pin fixed on the ejector plate, and the ejector pin penetrates through the die core assembly from the rear end.

Through the utility model provides a technical scheme has following beneficial effect:

according to the scheme, through the matching of the rifling screw and the rifling nut, the die opening or die closing action of the die synchronously drives the core column to rotate, and further the tooth twisting and die releasing of the core column during die opening are realized; the action consistency is good. And the assembly of driving devices such as a motor and the like is omitted, all parts can be directly arranged in the original mould structure, the size of the mould cannot be additionally increased, and the subsequent racking assembly and use are facilitated. Simple structure and ingenious design.

Drawings

FIG. 1 is a schematic perspective view of a Lefu wire threading demolding mold in an embodiment;

FIG. 2 is an exploded view of a portion of an embodiment of a Leeford thread tooth stripper die;

FIG. 3 is a schematic view of an embodiment of a rifling tooth stripper die after concealing the front die assembly and the core assembly;

fig. 4 is a schematic view showing the internal structure of the rifling tooth demolding mold in the embodiment.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. The components in the drawings are not necessarily to scale, and similar reference numerals are generally used to identify similar components.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 4, the present embodiment provides a rifling tooth demolding mold, which includes a front mold assembly 10, a rear mold assembly 20, a mold core assembly (not shown), a rifling screw 31, a rifling nut 32, a driving gear 33, a driven gear, and a thread forming assembly 40; the core assembly is disposed between front mold assembly 10 and rear mold assembly 20. The thread forming assembly 40 is provided with a plurality of groups, and comprises a core column 41 and a core column gear 42, wherein the core column 41 is rotatably assembled on the rear die assembly 20. The front end 411 of the stem 41 is provided with threads and is inserted into the forming cavity of the mold core assembly, and the stem gear 42 is sleeved on the stem 41; the rifling screw 31 is parallel to the mold opening and closing direction of the mold and is fixed on the front mold component 10; the rifling nut 32 is sleeved on the rifling screw 31, the driving gear 33 is sleeved on the rifling nut 32, and the driving gear 33 is in transmission connection with the stem gears 42 of the thread forming assemblies 40 through driven gears.

According to the scheme, through the matching of the rifling screw 31 and the rifling nut 32, the die opening or die closing action of the die synchronously drives the core column 41 to rotate, and further the tooth twisting and demoulding of the core column 41 during die opening are realized; the action consistency is good. That is, when the mold is opened, the rear mold assembly 20 moves backward away from the front mold assembly 10, and while moving backward, the rifling nut 32 also moves backward, so that the rifling nut 32 rotates because the rifling screw 31 is not moved, and the rotation of the rifling nut 32 drives the driving gear 33, the driven gear and the core column gear 42 to rotate, thereby driving the core column 41 to rotate to realize the tooth twisting and demolding. The assembly of driving devices such as a motor is omitted, all parts can be directly arranged in the original die structure, the size of the die cannot be additionally increased, and the subsequent upper frame assembly and use are facilitated. Simple structure and ingenious design.

Further, in this embodiment, the front mold assembly 10 includes a first front mold plate 11 and a second front mold plate 12, the second front mold plate 12 is located at the rear end of the first front mold plate 11, the rifling screw 31 is disposed on the second front mold plate 12 in a penetrating manner, the rifling screw 31 has a "D" -shaped nut 311, the second front mold plate 12 is provided with a "D" -shaped limiting groove, and the nut 311 of the rifling screw 31 is assembled in the limiting groove of the second front mold plate 12 to realize circumferential limiting and fixing; the first front template 11 covers the limit groove to realize the axial limit fixation of the rifling screw 31. Thus, the rifling screw 31 is fixed to the front mold assembly 10. Of course, in other embodiments, the assembly structure of the rifling screw 31 fixed to the front mold assembly 10 is not limited thereto.

Further, in this embodiment, the rifling nut 32 is further sleeved with a bearing 321, and is rotatably assembled on the rear mold assembly 20 through the bearing 321, so that the stress is uniform, and the rifling nut is not easy to shift or shake. Of course, in other embodiments, this is not limiting.

Further, the number of the driven gears is two, and the two driven gears are respectively a first driven gear 341 and a second driven gear 342; the first driven gear 341 is engaged with the driving gear 33, and the first driven gear 341 is also engaged with the stem gear 42 of at least one set of thread forming assemblies 40; the second driven gear 342 meshes with the stem gear 42 of at least one set of thread forming assemblies 40, and the stem gear 42 of at least one set of thread forming assemblies 40 meshes with both the first and second driven

gears

341 and 342. Specifically, in this embodiment, the number of the thread forming assemblies 40 is five, wherein two sets of the thread forming assemblies 40 are separately engaged with the first driven gear 341, and one set of the thread forming assemblies 40 is simultaneously engaged with the first driven gear 341 and the second driven gear 342, so as to realize the transmission connection between the first driven gear 341 and the second driven gear 342; the remaining two sets of thread forming assemblies 40 are individually engaged with the second driven gear 342. Of course, in other embodiments, the number of driven gears and the manner of the transmission assembly are not limited thereto.

Further, in this embodiment, a bearing 43 is sleeved at the middle position of the core column 41, and the core column is rotatably assembled on the rear mold assembly 20 through the bearing 43; the stem gear 42 is sleeved on the rear end of the stem 41. So set up, the atress is even, and action stability is better.

Further, in the present embodiment, the rear mold assembly 20 has an ejector plate 21 and an ejector 22 fixed on the ejector plate 21, and the ejector 22 is inserted into the mold core assembly from the rear end. With the arrangement, when the core column 41 is used for twisting tooth demoulding, the ejector pin 22 can synchronously eject out the product, so that a demoulding mode that the product is synchronously ejected while twisting tooth demoulding is realized; the effect is better.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A rifling thread tooth-twisting demoulding mould comprises a front mould component, a rear mould component and a mould core component arranged between the front mould component and the rear mould component; the method is characterized in that: the device also comprises a rifling screw, a rifling nut, a driving gear, a driven gear and a thread forming assembly; the thread forming assemblies are provided with a plurality of groups and respectively comprise a core column and a core column gear, the core column is rotatably assembled on the rear die assembly, the front end of the core column is provided with threads and is inserted into a forming cavity of the die core assembly, and the core column gear is sleeved on the core column; the rifling screw is parallel to the die opening and closing direction of the die and is fixed on the front die assembly; the rifling nut is sleeved on the rifling screw rod, the driving gear is sleeved on the rifling nut, and the driving gear is in transmission connection with the core column gears of the thread forming assemblies through the driven gears.

2. The rifling tooth demolding die of claim 1, wherein: the front mold assembly comprises a first front mold plate and a second front mold plate, the second front mold plate is positioned at the rear end of the first front mold plate, the rifling screw rod penetrates through the second front mold plate, the rifling screw rod is provided with a D-shaped screw cap, a D-shaped limiting groove is formed in the second front mold plate, and the screw cap of the rifling screw rod is assembled in the limiting groove of the second front mold plate to realize circumferential limiting and fixing; the first front template covers the limiting groove to realize axial limiting and fixing of the rifling screw.

3. The rifling tooth demolding die of claim 1, wherein: the rifling nut is also sleeved with a bearing and is rotatably assembled on the rear die assembly through the bearing.

4. The rifling tooth demolding die of claim 1, wherein: the number of the driven gears is two, and the two driven gears are respectively a first driven gear and a second driven gear; the first driven gear is meshed with the driving gear and is also meshed with the stem gear of at least one group of thread forming assemblies; the second driven gear is meshed with the stem gear of the at least one group of thread forming assemblies, and the stem gear of the at least one group of thread forming assemblies is meshed with the first driven gear and the second driven gear simultaneously.

5. The rifling tooth demolding die of claim 1, wherein: the middle part of the core column is sleeved with a bearing and is rotatably assembled on the rear die assembly through the bearing; the core column gear is sleeved on the rear end of the core column.

6. The rifling tooth demolding die of claim 1, wherein: the rear die assembly is provided with an ejector plate and an ejector pin fixed on the ejector plate, and the ejector pin penetrates through the die core assembly from the rear end.