TWM466736U - Forming die of anti-loosening screw - Google Patents

Description

Anti-loosening screw forming mold

The present invention relates to a molding die for a loosening screw, and more particularly to a molding die for manufacturing a locking screw having a special thread angle.

It is known that the forming mold of the screw is a standard 60° shaped tooth pattern on the opposite acting surface of the two molding modules, and the circumferential surface of the circular rod body of the screw blank is pressed and pushed, and the circumference of the circular rod body is performed. The external thread of the standard 60° thread angle is formed on the surface, whereby the formed screw can be screwed with the internal thread of the nut or the object, and in order to increase the anti-loose effect of the screw fastening, The screw is sleeved with a resilient gasket such as a C-shape, so that when the screw is screwed into the internal thread of the object, the elastic gasket is gradually deformed, and the reaction force formed by the elastic gasket is pressed against the object, and The anti-loosening effect can be achieved. However, such an elastic spacer is disposed in a confined space and has a problem that it is difficult to install and cannot be applied. Moreover, the screw manufactured by the molding die can be provided with a coating on the external thread of the screw, so that when the screw is screwed with the internal thread of the object, the screw can be filled in the thread gap of the screw by the deformation deformation of the coating. Thereby, the anti-loosening effect is produced. However, the provision of a coating on the threads other than the screws manufactured by the molding die greatly increases the manufacturing cost.

The present invention provides a molding die for a loosening screw, comprising a first module, the first module comprising an active surface, the active surface comprising a plurality of peaks arranged obliquely parallel to each other And a plurality of roots forming the tooth pattern, each peak portion is located between the adjacent two root portions, and between the peak portion and the adjacent two root portions, a first side belly and a second side belly are relatively inclined. A flank angle between 61° and 67° is formed between the one side and the second side, and the angle of each of the formed ridges comprises a vertical line perpendicular to the tangent of each peak and a first side of the first side. The first angle of inclination, and the angle of the teeth of each of the formed ridges, comprise a second angle of inclination formed by the vertical line and the second side, the first angle of inclination being between 32° and 40°, and the second angle of inclination being between 25° and Up to 29°; and including a second module, the second module includes an active surface, the working surface includes a plurality of peak-shaped portions and a plurality of root-shaped teeth formed in an obliquely parallel arrangement, and the peaks are located adjacent to each other Between the two root portions, a first flank and a second flank are relatively inclined between the peak portion and the adjacent two root portions, and the first side belly and the second side belly portion are formed between 61° and 67 degrees. a corner of the tooth, the angle of the teeth of each formed ridge includes a vertical line perpendicular to the tangent of each peak and a first flank forming a first The angle of inclination, and the angle of the teeth of each formed ridge include a second angle of inclination formed by the vertical line and the second side, the first angle of inclination being between 32° and 40°, and the second angle of inclination being between 25° and 29 degrees The first module and the second module move in parallel to press a surface of a circular rod body, and an external thread having a thread angle of 61° to 67° is formed on the surface of the circular rod body.

This creation can improve the manufacturing technology of the anti-loosening screw by the structural improvement of the molding die, so that the anti-loose structure of the screw is no longer limited to the elastic gasket of the C-shaped sleeve, or the external thread of the screw. Adding a coating processing program, and the original molding mold can directly form a lock screw with a special thread angle, and can produce a good anti-loose effect with the standard 60° thread angle internal thread, without Adding a coating on the external thread surface of the screw can achieve the practical benefit of saving the manufacturing cost of the anti-loosening screw.

10‧‧‧Molding mould

12‧‧‧Safety screws

14‧‧‧ Screw blank

20‧‧‧ first module

22‧‧‧ entrance end

24‧‧‧export end

26‧‧‧Action surface

28‧‧‧Molded teeth

30‧‧‧ Peak Department

32‧‧‧First flank

34‧‧‧Second flank

36‧‧‧ Root

40‧‧‧ second module

42‧‧‧ entrance end

44‧‧‧export end

46‧‧‧Action surface

48‧‧‧Molded teeth

50‧‧‧ Peak

52‧‧‧First flank

54‧‧‧Second flank

56‧‧‧ Root

60‧‧‧round rod

62‧‧‧ external thread

64‧‧‧Spiral peak

66‧‧‧Snail

68‧‧‧First Spiral

70‧‧‧Second snail

A‧‧‧first tilt angle

B‧‧‧Second angle of inclination

C‧‧‧First tilt angle

D‧‧‧second tilt angle

E‧‧‧First tilt angle

F‧‧‧second tilt angle

X‧‧‧ central axis

Y1‧‧‧ vertical line

Y2‧‧‧ vertical line

Y3‧‧‧ vertical line

The first image shows the stereoscopic appearance of the creation.

The second figure shows that the screw blank is fed into the inlet end side of the first module of the present invention and the inlet end side of the second module abuts against the circular rod body of the screw blank, and is about to push the circular rod body toward the first The top end of a module is rotated in the upper view.

The third figure shows an end view of the second module facing the exit end of the second module.

The fourth figure shows a partial enlarged view of the position of the circle of the third figure.

The fifth figure shows a view of the second module of the present creation moving toward the outlet end of the first module and pushing the circular rod to the upper end of the first module.

The sixth figure shows a cross-sectional view taken along line 6-6 of the fifth figure.

The seventh figure shows a partial cross-sectional view of the position of the sixth figure.

The eighth figure shows the appearance of the anti-loosening screw manufactured by the molding die of the present invention.

All of the following drawings are merely illustrative of the basic teachings of the present invention, and the extension of the number, position, relationship, and size of the components constituting the preferred embodiment will be explained in the drawings. Post-guided changes are implemented in industry skills. In addition, changes in the exact dimensions and size ratios associated with specific strengths, weights, strengths, and similar requirements are also within the skill of the industry after reading and understanding the teachings of this creation.

In the different figures, the same reference numerals are used to designate the same or similar elements; in addition, please understand the words such as "first", "second", "peak", "top", "root", and the like, and only provide for viewing. The figure is constructed in the reference figure and is only used to help describe this creation.

According to the drawings, the molding die 10 of the present anti-loosening screw is formed into a flat mold form and includes a first module 20 of a rectangular body and a second module 40 of a rectangular body (as shown in the first figure).

According to the drawings, the first module 20 of the present molding die 10 includes an inlet end 22 and an outlet end 24 spaced apart from each other. An active surface 26 extends between the inlet end 22 and the outlet end 24, and the active surface 26 is disposed. The plurality of shaped ridges 28, which are parallel to each other and are inclined downwardly from the inlet end 22 toward the outlet end 24, are separated by a plurality of peak portions 30 and a plurality of root portions 36.

According to the drawing, each peak portion 30 of the first module 20 of the present invention is located between two adjacent portions 36, and a peak portion 30 of each of the molding ribs 28 and the adjacent two root portions 36 extend a relatively inclined one. The first side 32 and the second side 34, and the first side 32 and the second side 34 form a tooth angle between 61° and 67°.

According to the drawing, the angle of the teeth of each of the forming teeth 28 includes a first angle of inclination C formed by a vertical line Y1 perpendicular to the tangent of each peak 30 and the first side web 32, and each formed tooth pattern. The tooth angle of 28 includes a second inclination angle D formed between the vertical line Y1 and the second side belly 34 (as shown in the fourth figure), the first inclination angle C is between 32° and 40°, and the second inclination angle D Between 25° and 29°.

According to the drawings, the second module 40 of the molding die 10 includes an inlet end 42 and an outlet end 44 spaced apart from each other. An active surface 46 extends between the inlet end 42 and the outlet end 44. The plurality of shaped ridges 58 that are parallel to each other and are inclined downwardly from the inlet end 42 toward the outlet end 44 are separated by a plurality of peak portions 50 and a plurality of root portions 56.

According to the schematic display, the peaks 50 of the second module 40 of the present invention are located between the adjacent two portions 56, and a peak portion 50 of each of the molding ribs 58 and the adjacent two root portions 56 extend a relatively inclined one. The first side 52 and the second side 54 are formed, and a first angle between 61° and 67° is formed between the first side 52 and the second side 54.

According to the drawing, the angle of the teeth of each of the forming sipe 48 of the second module 40 of the present invention includes a first oblique angle E formed by a vertical line Y2 perpendicular to the tangent of each peak 50 and the first side abdomen 52, And the angle of the teeth of each of the forming ribs 48 includes a second angle of inclination F between the vertical line Y2 and the second side flank 54 (as shown in the fourth figure), the first angle of inclination E being between 32° and 40°, The second tilt angle F is between 25° and 29°.

According to the drawing, the distance between the peak portion 30 and the peak portion 30 of each of the molding ribs 28 of the first module 20 and the peak portion 50 and the peak portion 50 of each of the molding ribs 48 of the second module 40 are equal, and the first module 20 The pitch of the root portion 36 of each of the molding ribs 28 and the root portion 36 is equal to the pitch of the root portion 56 of the molding ribs 48 of the second module 40 and the root portion 56.

According to the drawing, the first inclination angle C of each of the molding ribs 28 of the first module 20 is the same as the first inclination angle E of each of the molding ribs 48 of the second module 40, and the second inclination angle D of the first module 20 is The second angle of inclination F of the second module 40 is the same, that is, the angle of the teeth of the shaped striate 28 of the first module 20 is at the same angle as the angle of the teeth of the shaped sipe 48 of the second module 40.

For convenience of explanation, it is assumed that in the initial state, the first module 20 and the second module 40 are arranged in parallel in a height of a dent (not shown), and A module 20 is fixed on the machine of the boring machine, and the second module 40 is arranged to reciprocate in a reciprocating mechanism (not shown) of the boring machine, and when the boring machine is not activated, the second module 40 The inlet end 42 is aligned with the inlet end 22 of the first module 20, and the distance between the active surface 26 of the first module 20 and the active surface 46 of the second module 40 is adjusted to be approximately the pitch diameter of the forming screw, thereby waiting for one The screw blank 14 is introduced between the inlet end 22 of the first module 20 and the inlet end 42 of the second module 40 by a feeding device (not shown) on the side of the boring machine.

The molding die 10 of the present invention manufactures a lock-proof screw 12 which is a surface of the circular rod body 60 which is extended from the side end of a screw blank 14 and which is introduced into the inlet end 22 side of the first module 20 when the boring machine is started. At 26 o'clock (as shown in the second and third figures), the active surface 46 of the second module 40 on the inlet end 42 side is pressed against the circumferential surface of the circular rod body 60, and the inlet end 42 of the second module 40 faces The outlet end 24 side of the first module 20 moves to push the circular rod 60 to rotate along the central axis X, and the forming teeth of the forming tooth 28 of the first module 20 and the active surface 46 of the second module 40 are formed. The pattern 48 extrudes the circumferential surface of the circular rod body 60 such that the peaks 30, 50 of the first and second modules 20, 40 extrude a spiral root 66 on the circumferential surface of the circular rod body 60, and The first side webs 32, 52 and the second side webs 34, 54 of the first and second modules 20, 40 extrude a first screw web 68 and a second screw web 70 on the circumference of the circular rod body 60, and A helical peak 64 is extruded from the roots 36, 56 of the first and second modules 20, 40 on the circumference of the circular shaft 60, whereby the outlet end 44 of the second module 40 is adjacent to the first module 20 Exit end 24 hours (such as the fifth The figure shows that an external thread 62 of the lock screw 23 is formed on the circumferential surface of the circular rod body 60 (as shown in FIG. 6), and the external thread 62 and the first module 20 and the second module 40 are Forming burrs 28, 48 The concave and convex complementary form, so that a thread angle formed between the first screw web 68 and the second screw web 70 of the external thread 62 is equal to the angle of the forming teeth 28, 48 of the first and second modules 20, 40, the external thread The thread angle of 62 is also between 61° and 67°, and a first slope is formed by the first screw web 68 and a vertical line Y3 perpendicular to the central axis X of the circular shaft 60 and passing through the central axis X. Angle A, the first angle of inclination A is equal to the first angles of inclination C, E of the first and second modules 20, 40, and the thread angle of the external thread 62 of the lock screw 12 and includes the second screw 70 to the vertical line A second angle of inclination B formed between Y3, the second angle of inclination B being equal to the second angles of inclination D, F of the first and second modules 20, 40 (as shown in the seventh figure), and when the second module 40 is squeezed When the circular rod body 60 is pressed and pushed to the outlet end 44 of the first module 20, since the length of the second module 40 as the movable plate is greater than the length of the first module 20 as the fixed plate, the second module 40 is turned to a circular shape. The rod 60 is moved to the end of the outlet end 24 of the first module 20, causing the circular rod 60 to fall outward from the end of the outlet end 44 of the first module 20 to complete the lock screw 1 2 Manufacture, at this time, the reciprocating mechanism of the boring machine pulls the second module 40 back, so that the inlet end 42 of the second module 40 is aligned with the inlet end 22 of the first module 20, waiting for the circle of the next screw blank 14 The rod body 60 is introduced between the inlet end 22 of the first module 20 and the inlet end 42 of the second module 40 by the feeding device on the side of the boring machine, and the next one of the lock screws 12 can be produced by the repetitive process. The finished anti-loosening screw 12 is as shown in the eighth figure.

The anti-loose screw 12 manufactured by the molding die 10 can be screwed with the internal thread of the standard 60° thread angle to generate an interference fit, and the interference fit portion is mutually deformed and deformed, thereby increasing the contact portion. The positive force, thereby increasing the friction between the screwing portions, and achieving the anti-slipping effect. Therefore, the screw manufactured by the forming mold 10 has a anti-loose effect and is independent of the anti-loose screw 12 Thread 62 does not require additional coating to achieve cost savings.

The basic teachings of this creation have been described, and many extensions and variations will be apparent to those having ordinary skill in the art, and the present invention is shown in the drawings of the specification to create a right-hand thread. The anti-loosening screw 12 of the external thread 62 is mainly used. If the anti-loose screw 12 of the external thread 62 in the form of a left-hand thread is to be manufactured, the molding ribs 28 and 48 of the first module 20 and the second module 40 are changed. In the opposite direction of inclination, the lock screw 12 of the external thread 62 can be manufactured.

The disclosure of the present invention may be embodied in other specific forms without departing from the spirit and scope of the invention. The scope of the present invention is defined by the scope of the appended claims, and is not intended to be limited by the scope of the invention.

10‧‧‧Molding mould

20‧‧‧ first module

22‧‧‧ entrance end

24‧‧‧export end

26‧‧‧Action surface

28‧‧‧Molded teeth

40‧‧‧ second module

42‧‧‧ entrance end

44‧‧‧export end

46‧‧‧Action surface

48‧‧‧Molded teeth

Claims (1)

A molding die for a loosening screw, comprising: a first module comprising an active surface, wherein the working surface comprises a plurality of peaks and a plurality of roots of the shaped teeth arranged obliquely in parallel, each peak being adjacent Between the two root portions, a first flank and a second flank are relatively inclined between any of the peaks and the adjacent two portions, and the first side and the second side are formed between 61° and a corner angle of 67°, the angle of the teeth of each formed ridge includes a first oblique angle formed by a vertical line perpendicular to the tangent of each peak and the first side belly, and the angle of the teeth of each formed striate includes The second line forms a second angle of inclination between the vertical line and the second side, the first angle of inclination is between 32° and 40°, and the second angle of inclination is between 25° and 29°; a second module comprising an active surface acts The surface includes a plurality of peak-shaped portions and a plurality of root-shaped teeth formed in an obliquely parallel arrangement, and each peak portion is located between two adjacent portions, and a relative inclination is extended between any of the peak portions and the adjacent two root portions. a first flank and a second flank, the first flank and the second flank formed between 61° and 67 a corner of each of the formed ridges comprising a vertical line formed by a perpendicular line perpendicular to the tangent of each peak forming a first angle of inclination with the first flank, and the flank of each formed ridge comprises a vertical line The second side of the abdomen forms a second angle of inclination, the first angle of inclination is between 32° and 40°, and the second angle of inclination is between 25° and 29°; the first module and the second module are moved in parallel for a circle The surface of the rod is pressed and pushed to the circular rod body, and an external thread having a thread angle of 61° to 67° is formed on the surface of the circular rod body.