TWI446096B - Screwing mold structure - Google Patents

Description

Thread forming template structure

The present invention relates to a thread forming template structure, and more particularly to a thread forming template structure for forming a barrel thread.

With the development of optical imaging technology, lens modules are widely used in various imaging devices such as digital cameras and video cameras (see Capturing images with digital still cameras, Micro, IEEE Volume: 18, issue: 6, Nov.-Dec. 1998 Page(s): 14-19), and electronic devices such as mobile phones and notebooks integrated with lens modules have been favored by many consumers.

The lens module generally includes a lens, a lens barrel, a lens holder, a filter, and a spacer for separating the lens from the filter. The lens barrel and the lens holder are meshed with each other by screws. During the assembly of the lens module, components such as a lens, a filter and a spacer are loaded into the lens barrel in a certain order, and then the lens barrel is screwed into the lens holder. Assembled into a complete lens module.

The meshing force between the lens barrel and the mirror base also needs to be controlled within a certain range, so that the lens barrel and the mirror base are better matched. If the meshing force is too large, the external thread of the lens barrel and the internal thread of the lens holder will wear each other. If the meshing force is too small, the lens barrel is easily separated from the lens holder. At present, the adjustment of the meshing force between the lens barrel and the lens holder is controlled by adjusting the thread forming template of the lens barrel. When the meshing force of the cooperation between the lens barrel and the lens holder is too small, the threaded portion of the thread forming template is subjected to electric discharge machining, and then the thread forming template is used to manufacture the lens barrel. If the electric discharge of the thread forming template has been processed The amount cannot be repaired and the thread forming template has to be reworked, which is time consuming and costly.

In view of this, it is necessary to provide a thread forming template structure that can flexibly and easily replace different screw sizes.

A thread forming formwork structure includes a male formwork and a mother formwork that cooperate with each other. The parent template includes at least one female template unit, at least one threaded slider, and a first latch. The male form includes at least one male formwork unit, at least one threaded slider, and a second pin. The mother template unit and the male template unit are respectively provided with a female template gap and a male template gap, and the male template unit and the female template unit are respectively formed through the mother template unit and the male template unit and are connected to the male and female template gaps. The mother template through hole and the male template through hole. The threaded slider includes a pair of end faces having a concave curved surface and a pair of side faces through which the slider through holes are provided, the concave curved surface is provided with a thread, and the sliding plate through holes penetrate the entire screw slider, and the screw is slippery When the block is installed in the corresponding female template notch and the male template notch, the concave curved surface of one end faces the opening of the female template notch or the male template notch, and the first pin passes through the corresponding sliding through hole and the female template through hole The screw slider is fixed in the corresponding female template unit, and the second bolt passes through the corresponding slider through hole and the male template through hole to fix the screw slider in the corresponding male template unit.

Compared with the prior art, the thread forming template structure provided by the present invention fixes the screw sliders with different thread sizes to the corresponding mother template unit and the male template unit through the bolts, and the mother template unit and the male template unit cooperate with each other. A threaded hole is formed. When adjusting the meshing force of the thread, it is only necessary to select a threaded slider with different thread sizes by inserting and removing the bolt. Several different threading forces can be tested simultaneously during product development, greatly reducing the development cycle. In mass production, the screw slider is another The thread on the concave surface of the end can be used as a spare. When the thread of the screw is used for the damage of the die, it can be replaced and produced immediately. Since the replacement of the screw slider does not require replacement of the entire thread forming template, the cost of the kit during development and mass production can be saved.

1‧‧‧Thread Forming Structure

10‧‧‧ mother template

12‧‧‧public template

1012‧‧‧Occlusal structure

22‧‧‧Threaded holes

14‧‧‧ threaded slider

16‧‧‧First pin

17‧‧‧Second latch

18‧‧‧Female template support

20‧‧‧public formwork support

22‧‧‧Threaded holes

24‧‧‧ bolt

100‧‧‧ mother template unit

120‧‧‧public template unit

1020‧‧‧First side wall

1021‧‧‧ third side wall

104‧‧‧ mother template gap

1040‧‧‧ mother template notch inner side

1240‧‧‧ male template notch inner side

1041‧‧‧ mother template notch bottom

1042‧‧ ‧ mother template gap inside the face

106‧‧‧Female template through hole

1025‧‧‧Bottom of the mother template unit

1225‧‧‧The bottom of the male formwork unit

108‧‧‧Female template boss

1220‧‧‧ second side wall

1221‧‧‧ fourth side wall

124‧‧‧public template gap

1241‧‧‧ Male template notch bottom

1242‧‧‧Member template gap

126‧‧‧Public template through hole

122‧‧‧public template groove

128‧‧‧public formwork boss

142‧‧‧ threaded slider side

141‧‧‧The end face of the screw

140‧‧‧ threaded front end face

143‧‧‧Snail sliding inner concave surface

144‧‧‧ thread

146‧‧‧Slider through hole

180‧‧‧Female template stepped groove

200‧‧‧Male formwork stepped groove

181‧‧‧ mother template support upper surface

201‧‧‧The upper surface of the male formwork support

182, 202‧‧‧ cylindrical oblique hole

102‧‧‧ mother template groove

26‧‧‧ core hole

1 is a schematic overall view of a thread forming template structure provided by an embodiment of the present invention.

Figure 2 is an exploded perspective view of the thread forming template structure provided in Figure 1.

Figure 3 is a schematic cross-sectional view taken along line III-III of Figure 1.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of the present invention provides a thread forming template structure 1 including a mating template 10 and a male template 12 that cooperate with each other. The master template 10 includes at least one female template unit 100, at least one threaded slider 14 and a first latch 16. The male template 12 includes at least one male template unit 120, at least one threaded slider 14 and a second latch 17.

The mother template unit 100 includes a first sidewall 1020 and a third sidewall 1021 opposite the first sidewall 1020. The first side wall 1020 is provided with a female template notch 104. The female template notch 104 includes two mutually parallel female template notch inner sides 1040, a female template notch bottom surface 1041 and a female template notch inner abutting surface 1042. A mother template through hole 106 penetrating the mother template unit 100 and communicating with the mother template notch 104 is defined in each of the two female template notch inner sides 1040. The first side wall 1020 is adjacent to a portion of the bottom surface 1025 of the mother template unit 100 and has a mother template groove 102 (see FIG. 3). The mother template unit 100 extends downwardly from a third side wall 1021 opposite to the female template gap 104 to form a female template boss 108.

The male template unit 120 includes a second sidewall 1220 and a fourth sidewall 1221 opposite the second sidewall 1220. The second side wall 1220 is provided with a male template notch 124. The male template notch 124 includes two mutually parallel male template notch inner sides 1240, a male template notch bottom surface 1241 and a male template notch inner abutting surface 1242. The two male stencils on the inner side surface 1240 are respectively provided with a male template through hole 126 penetrating the male template unit 120 and connected to the male template notch 124. The second sidewall 1220 is adjacent to a portion of the bottom surface 1225 of the male template unit 120 and defines a male template recess 122. The male template unit 120 forms a male template boss 128 on the fourth sidewall 1221 opposite to the male template cutout 124.

The threaded slider 14 is mounted in the corresponding female template notch 104 and the male template notch 124. The threaded slider 14 includes two side surfaces 142 that cooperate with the female (notch) notch inner side surface 1240 (1040), and the male (female) template notch inner abutting surface 1242 (1042) cooperate with each other after the end surface 141 and The rear end surface 141 is opposite to the front end surface 140. The front end surface 140 and the rear end surface 141 are respectively provided with a concave curved surface 143. The concave curved surface 143 is provided with a thread 144, which can be made into different sizes according to actual needs for development and production applications. A slider through hole 146 is formed in the side surface 142 through the threaded slider 14.

The first latch 16 is used to fix the screw slider 14 to the corresponding female template unit 100, and the second latch 17 is used to fix the screw slider 14 to the corresponding male template unit 120. When the threaded slider 14 is mounted in the corresponding female template notch 104 and the male template notch 124, the sliding through hole 146 is aligned with the corresponding female template through hole 106 and the male template through hole 126, respectively. The front end surface 140 of the threaded slider 14 faces outward and is flush with the first side wall 1020 of the corresponding mother template unit 100 and the second side wall 1220 of the male form unit 120. The first pin 16 passes through the slider through hole 146 and the corresponding mother template The through hole 106 fixes the screw slider 14 to the corresponding mother template unit 100. The second latch 17 is fixed to the corresponding male template unit 120 through the slider through hole 146 and the corresponding male template through hole 126. In order to prevent the screw slider 14 from rotating in the female template notch 104 and the male template notch 124, the first pin 16, the second pin 17, the slider through hole 146, the female template through hole 106 and the male template through hole 126 The cross-sectional shape is a polygon.

The thread forming template structure 1 further includes a female formwork support 18 and a male formwork support 20. The female template support 18 and the male template support 20 are respectively used to carry the corresponding mother template unit 100 and the male template unit 120. The mother template support 18 and the male template support 20 are respectively provided with a mother template stepped groove 180 and a male form stepped groove 200 matched with the mother template boss 108 and the male template boss 128. At least one mother template unit 100 on which the threaded slider 14 is mounted is fixed in the mother template stepped groove 180 by bolts 24 to form the mother template 10. At least one male template unit 120 on which the threaded slider 14 is mounted is fixed in the male template stepped recess 200 by bolts 24 to form the male template 12.

The upper surface 181, 201 of the female template support 18 and the male template support 20 are respectively provided with cylindrical inclined holes 182, 202, which cooperate with a cylindrical inclined guide column (not shown) on the mold fixed mold, and pass through the mold. The mold opening and closing mold respectively drive the mother template 10 and the male template 12 to open or close. The female template 10 and the male template 12 have a snap-fit structure 1012 corresponding to each other at one end of the mutual fit, such that the female template 10 and the threaded slider 14 on the male template 12 are closely fitted to each other to form a threaded hole 22, the mother template The groove 102 and the male template groove 122 cooperate to form a core hole 26 (see Fig. 3). The core hole 26 is for passing through a core (not shown) to form a lens barrel 22 and a thread for molding the side wall of the barrel.

The screw sliders 14 having different sizes of threads 144 are selected to be combined with each other to satisfy the molding. Requirements for barrel threads with different meshing forces. When the screw slider 14 is damaged, it is only necessary to pull out the corresponding first pin 16 or the second pin 17 to replace it.

The thread forming template structure 1 provided by the embodiment of the present invention fixes the screw sliders 14 having different size threads 144 to the corresponding mother template unit 100 and the male template unit 120 by the first bolt 16 and the second bolt 17 respectively. The mother template unit 100 and the male template unit 120 cooperate to form a threaded hole 22. When adjusting the meshing force of the thread 144, it is only necessary to select the threaded slider 14 having different thread sizes by inserting and removing the first pin 16 or the second pin 17. In the product development, the meshing force of several different threads can be tested at the same time, which greatly shortens the development cycle. At the time of mass production, the thread 144 on the concave curved surface 143 at the other end of the threaded slider 14 can be regarded as a spare material, and can be replaced and immediately produced when the threaded slider 144 of the threaded slider 14 is damaged. Since the replacement of the screw slider 14 does not require replacement of the entire thread forming template structure 1, the cost of the kit during development and mass production can be saved.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

14‧‧‧ threaded slider

16‧‧‧First pin

17‧‧‧Second latch

18‧‧‧Female template support

20‧‧‧public formwork support

22‧‧‧Threaded holes

24‧‧‧ bolt

100‧‧‧ mother template unit

120‧‧‧public template unit

1020‧‧‧First side wall

1021‧‧‧ third side wall

104‧‧‧ mother template gap

1040‧‧‧ mother template notch inner side

1240‧‧‧ male template notch inner side

1041‧‧‧ mother template notch bottom

1042‧‧ ‧ mother template gap inside the face

106‧‧‧Female template through hole

1025‧‧‧Bottom of the mother template unit

1225‧‧‧The bottom of the male formwork unit

108‧‧‧Female template boss

1220‧‧‧ second side wall

1221‧‧‧ fourth side wall

124‧‧‧public template gap

1241‧‧‧ Male template notch bottom

1242‧‧‧Member template gap

126‧‧‧Public template through hole

122‧‧‧public template groove

128‧‧‧public formwork boss

142‧‧‧ threaded slider side

141‧‧‧The end face of the screw

140‧‧‧ threaded front end face

143‧‧‧Snail sliding inner concave surface

144‧‧‧ thread

146‧‧‧Slider through hole

180‧‧‧Female template stepped groove

200‧‧‧Male formwork stepped groove

181‧‧‧ mother template support upper surface

201‧‧‧The upper surface of the male formwork support

182, 202‧‧‧ cylindrical oblique hole

Claims (7)

A thread forming template structure comprising a male template and a female template, wherein the master template comprises at least one mother template unit, at least one screw slider and a first bolt, the public template comprising at least one male a template unit, at least one screw slider and a second latch, wherein the mother template unit and the male template unit are respectively provided with a female template notch and a male template notch, and the male template unit and the female template unit are respectively formed through the mother a template unit and a male template unit and a female template through hole and a male template through hole communicating with the male and female template notches, the threaded slider comprising a pair of end faces having a concave curved surface and a pair of open through holes of the slider a concave surface provided with a thread passing through the entire threaded slider The opening direction of the notch or the male template notch, the first pin passes through the corresponding slider through hole and the female template through hole to fix the screw slider in the corresponding mother template unit, and the second pin passes through the pair The male mold and a slider through hole vias thread is fixed in the slider units corresponding to the male mold. The thread forming template structure according to claim 1, wherein the mother template and the male template have a bite structure in which the shapes correspond to each other at one end of the mutual cooperation. The thread forming formwork structure according to claim 1, further comprising a mother formwork support and a male formwork support, wherein the mother formwork support and the male formwork support are respectively used for carrying the mother formwork unit and the male formwork The unit is configured to open and close the mother template unit and the male template unit under the driving of the female template support and the male template support. The thread forming template structure according to claim 3, wherein the mother template unit extends downwardly from a side wall opposite to the female template notch, and the male template unit is opposite to the male template notch. A male formwork boss is extended downwardly on the side wall, and the mother formwork support and the male formwork support respectively have a mother template matched with the mother formwork boss and the male formwork boss a stepped groove and a stepped groove of the male formwork, the stepped groove of the mother formwork and the stepped groove of the formwork form are respectively used for accommodating the mother formwork unit and the formwork unit. The thread forming template structure according to claim 4, wherein the mother template unit and the male template unit are respectively fixed in the mother template stepped groove and the male template stepped groove by a stud. The thread forming template structure according to claim 1, wherein: the female template notch is provided with a mother template groove on a side wall adjacent to a bottom surface of the mother template unit, and the male template notch is adjacent to a bottom surface of the male template unit The part of the template is provided with a male template groove. When the mother template unit and the male template unit are closely attached to each other, the mother template groove and the male template groove cooperate with each other to form a core hole. The thread forming template structure according to claim 1, wherein the cross-sectional shape of the plug, the slider through hole, the female template through hole and the male template through hole is a polygon.