Forming die of support carrier for VCM (voice coil motor)

Abstract

The invention discloses a forming die of a support carrier for a VCM (Voice Coil Motor), which comprises an upper die assembly, a lower die assembly and a lower die assembly, the upper die assembly comprises an upper die top plate and an upper die plate, the upper die plate is provided with an upper die insert and opening and closing mechanisms, the bottom of the upper die insert is provided with an upper die cavity for forming, and the opening and closing mechanisms are arranged on two sides of the upper die insert; the lower mold assembly comprises a lower mold plate, a lower mold bottom plate and a lower supporting plate, a lower mold insert matched with the upper mold insert and an opening and closing side mold matched with the opening and closing mechanism are arranged on the lower mold plate, and a lower mold cavity matched with the upper mold cavity is formed in the top of the lower mold insert; and the thread removing mechanism is arranged in the lower mold assembly and below the lower mold insert and comprises a thread shaft, and the thread shaft penetrates through the lower mold insert and is rotatably connected with the lower mold insert, so that the product is separated from the lower mold cavity. According to the forming die, a tooth sleeve structure is omitted, accessory cost is saved, in addition, the transmission shaft body is detachably connected with the tooth shaft, replacement of the tooth shaft is facilitated, and the risk that the tooth shaft and the tooth sleeve are stuck is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, and in particular relates to a molding mold of a support carrier for a VCM motor. Background Art

[0002] Among the structural components of the VCM voice coil motor, there is a component called "Carrier", which is connected to the lens barrel to realize the movement of the lens barrel. The inner ring of the carrier is composed of screw threads, which cooperate with the lens barrel through the screw threads. In the prior art, the main components of the screw thread removal mold are: a tooth shaft for forming screw threads, and a tooth sleeve for removing screw threads. The tooth sleeve is fixed to the bottom of the tooth shaft, and the inner screw thread of the tooth sleeve must be the same as the carrier tooth shape. The tooth shaft rotates and retreats backward through the action of the tooth sleeve to detach from the product. However, due to the particularity of the carrier product (the tooth shape needs to match different lens barrels), the tooth shaft and the tooth sleeve need to be frequently replaced according to the tooth shape of different lens barrels. The processing of the tooth sleeve is complicated and expensive, and there is a risk of jamming with the tooth sleeve when the tooth shaft rotates to remove the teeth. Therefore, it is urgent to develop a molding mold to solve this problem. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a molding die for a support carrier for a VCM motor. The molding die eliminates the brace structure, saves the cost of accessories, and improves the stability of the fallen teeth.

[0004] Specifically, the present invention discloses a molding die for a support carrier for a VCM motor, comprising:

[0005] An upper mold assembly, the upper mold assembly comprising an upper mold top plate and an upper mold plate, the upper mold top plate is provided with an injection port for allowing injection material to enter, the upper mold plate is provided with an upper mold insert and an opening and closing mechanism, the bottom of the upper mold insert has an upper mold cavity for molding, and the opening and closing mechanism is provided on both sides of the upper mold insert;

[0006] A lower mold assembly, the lower mold assembly comprising a lower mold plate, a lower mold bottom plate, and a lower support plate; the lower mold plate is provided with a lower mold insert matched with the upper mold insert, and an opening and closing side mold matched with the opening and closing mechanism; the top of the lower mold insert is provided with a lower mold cavity matched with the upper mold cavity;

[0007] The tooth removal mechanism is placed in the lower mold assembly and is arranged below the lower mold insert, including a tooth shaft, which passes through the lower mold insert and is rotatably connected to the lower mold insert to make the support carrier separate from the lower mold cavity; wherein,

[0008] A spring assembly is provided between the lower template and the lower support plate;

[0009] The upper mold cavity, the lower mold cavity, the tooth axis, and the opening and closing side molds constitute the product cavity.

[0010] Furthermore, the opening and closing side mold includes an opening and closing block and a forming block, and the opening and closing block and the forming block are both slidably connected to the upper mold plate, and the first locking part of the opening and closing block and the second locking part of the forming block abut against each other, and the opening and closing block is also provided with a sliding groove matching the opening and closing mechanism.

[0011] Furthermore, the opening and closing mechanism comprises a left opening and closing plate and a right opening and closing plate which are symmetrically arranged, and the bottoms of the left opening and closing plate and the right opening and closing plate have opening and closing portions which cooperate with the sliding groove.

[0012] Furthermore, the spring assembly includes four lifting springs, and the lower support plate has a receiving groove for receiving the lifting springs.

[0013] Furthermore, the tooth removal mechanism includes a connecting shaft, a transmission shaft, and a driven gear. The transmission shaft is rotatably connected to the lower mold bottom plate, the driven gear is fixedly arranged on the outside of the transmission shaft, the bottom of the connecting shaft is slidably connected to the upper part of the transmission shaft, and the upper part of the connecting shaft is fixedly connected to the tooth shaft.

[0014] Furthermore, a sliding groove allowing the connecting shaft to slide is provided on the upper portion of the transmission shaft.

[0015] Furthermore, the tooth removal mechanism also includes a driving gear, which is controlled by a transmission motor and is transmission-connected to the driven gear.

[0016] Furthermore, the tooth removal mechanism also includes a push rod, the bottom of which is connected to the lifting plate of the lower mold assembly, and the upper part passes through the lower mold insert and is placed below the supporting carrier.

[0017] The beneficial effects of the present invention are:

[0018] The forming mold eliminates the tooth sleeve structure, saving the cost of accessories. In addition, the transmission shaft body and the tooth shaft are detachably connected, which facilitates the replacement of the tooth shaft and avoids the risk of the tooth shaft and the tooth sleeve being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 It is an axonometric view of the mold of the support carrier molding mold in the mold closing state;

[0021] Figure 2 is a cross-sectional view of a support carrier forming mold in a mold-closing state;

[0022] Figure 3 It is a partial enlarged view of the product cavity of the support carrier molding mold;

[0023] Figure 4 It is an axonometric view of the support carrier forming mold in the open mold state;

[0024] Figure 5 is a schematic diagram of an upper mold assembly supporting a carrier forming mold;

[0025] Figure 6 is a cross-sectional view of an upper mold assembly supporting a carrier forming mold;

[0026] Figure 7 is a schematic diagram of a lower mold assembly supporting a carrier forming mold;

[0027] Figure 8 is a schematic diagram of a lower support plate supporting a carrier forming die;

[0028] Fig. 9 is a schematic diagram of a tooth removal mechanism supporting a carrier forming die;

[0029] Fig.10 It is a partial enlarged view of the tooth removal mechanism of the support carrier forming die;

[0030] Fig.11 It is a cross-sectional view of the tooth removal mechanism of the support carrier forming mold.

[0031] The numbers involved in the accompanying drawings are as follows: upper mold assembly 1, upper mold top plate 11, injection port 111, upper mold plate 12, upper mold insert 121, upper model cavity 1211, opening and closing mechanism 122, left opening and closing plate 1221, right opening and closing plate 1222, opening and closing part 1223, lower mold assembly 2, lower mold plate 21, lower mold insert 211, lower model cavity 2111, opening and closing side mold 212, opening and closing block 2121, molding block 2122, first locking part 2123, second locking part 2124, slide groove 2125, lower mold bottom plate 22, lower supporting plate 23, accommodating groove 231, lifting plate 24, tooth stripping mechanism 3, tooth shaft 31, connecting shaft body 32, transmission shaft body 33, sliding groove 331, driven gear 34, ejector rod 35, spring assembly 4, product cavity 5, injection runner 6. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] like Figure 1-11 As shown, the present invention discloses a molding die for a support carrier for a VCM motor, comprising:

[0034] The upper mold assembly 1 includes an upper mold top plate 11 and an upper mold plate 12. The upper mold top plate 11 is provided with an injection port 111 for allowing injection material to enter. The upper mold plate 12 is provided with an upper mold insert 121 and an opening and closing mechanism 122. The bottom of the upper mold insert 121 has an upper mold cavity 1211 for molding. The opening and closing mechanism 122 is provided on both sides of the upper mold insert 121.

[0035] The lower mold assembly 2 includes a lower mold plate 21, a lower mold bottom plate 22, and a lower support plate 23. The lower mold plate 21 is provided with a lower mold insert 211 matched with the upper mold insert 121, and an opening and closing side mold 212 matched with the opening and closing mechanism 122. The top of the lower mold insert 211 is provided with a lower mold cavity 2111 matched with the upper mold cavity 1211;

[0036] The tooth removal mechanism 3 is placed in the lower mold assembly 2 and is arranged below the lower mold insert 211, including a tooth shaft 31, which passes through the lower mold insert 211 and is rotatably connected to the lower mold insert 211, so that the support carrier is separated from the lower mold cavity 2111; wherein,

[0037] A spring assembly 4 is provided between the lower template 21 and the lower support plate 23;

[0038] The upper mold cavity 1211 , the lower mold cavity 2111 , the tooth axis 31 , and the opening and closing side mold 212 constitute the product mold cavity 5 .

[0039] In addition, the injection port 111 is connected to each product cavity 5 through the injection runner 6 .

[0040] In order to facilitate the side wall molding of the product and to facilitate separation from the product cavity 5, the opening and closing side mold 212 includes an opening and closing block 2121 and a molding block 2122. The opening and closing block 2121 and the molding block 2122 are both slidably connected to the upper mold plate 12, and the first locking portion 2123 of the opening and closing block 2121 and the second locking portion 2124 of the molding block 2122 abut against each other, and the opening and closing block 2121 is also provided with a sliding groove 2125 matching the opening and closing mechanism 122.

[0041] The opening and closing block 2121 moves to both sides under the action of the opening and closing mechanism 122, and at the same time drags the forming block 2122 to move, so that the forming block 2122 is separated from the supporting carrier, which has a simple structure and is easy to maintain.

[0042] In order to facilitate the cooperation between the opening and closing mechanism 122 and the opening and closing side mold 212, the opening and closing mechanism 122 includes a left opening and closing plate 1221 and a right opening and closing plate 1222 that are symmetrically arranged. The bottoms of the left opening and closing plates 1221 and the right opening and closing plates 1222 have an opening and closing portion 1223 that cooperates with the slide groove 2125. The angle formed by the connecting line of the opening and closing portion 1223 of the left opening and closing plate 1221 and the opening and closing portion 1223 of the right opening and closing plate 1222 is greater than 30°. When the opening and closing mechanism 122 moves downward, When the opening and closing part 1223 is moved, the opening and closing part 1223 is inserted into the slide groove 2125 matched therewith, so that the opening and closing block 2121 and the forming block 2122 are respectively moved to the inside of the two sides of the lower mold insert 211 to form a closed product cavity 5. When the opening and closing mechanism 122 moves upward, the opening and closing part 1223 is separated from the slide groove 2125, so that the opening and closing block 2121 and the forming block 2122 are moved to the outside of the two sides of the lower mold insert 211, so that the forming block 2122 is separated from the support carrier. The setting of the opening and closing side mold and the opening and closing mechanism improves the stability of the support carrier when demolding.

[0043] In addition, in some embodiments of the present invention, the spring assembly 4 may use four lifting springs, and the lower support plate 23 has a receiving groove 231 for accommodating the lifting spring. When the upper mold assembly 1 stops applying pressure to the lower mold plate 21, the lifting spring lifts the lower mold plate 21 for a distance, leaving a tooth removal space for the tooth removal mechanism, making it easier for the tooth removal mechanism 3 to remove teeth and detach from the supporting carrier.

[0044] The tooth stripping mechanism 3 includes a connecting shaft 32, a transmission shaft 33, and a driven gear 34. The transmission shaft 33 is rotatably connected to the lower mold bottom plate 22. The driven gear is fixedly arranged on the outer side of the transmission shaft 33. The bottom of the connecting shaft 32 is slidably connected to the upper part of the transmission shaft 33, and the upper part of the connecting shaft 32 is fixedly connected to the tooth axis 31. Among them, the upper part of the transmission shaft 33 is provided with a sliding groove 331 that allows the connecting shaft 32 to slide. The driven gear 34 is fixedly connected to the transmission shaft 33. Under the action of the driving force, the driven gear 34 drives the transmission shaft 33, the connecting shaft 32 and the tooth axis 31 to rotate. Because the supporting carrier is fixed in the product cavity 5, the tooth axis 31 rotates and gradually separates from the supporting carrier. When the lifting spring lifts the upper template 12, the upper template 12 drives the tooth shaft 31 to move upward together, so that the connecting shaft 32 slides in the sliding groove 331 of the transmission shaft 33. When the transmission shaft 33 rotates, the tooth shaft 31 gradually separates from the supporting carrier and slowly descends under the action of gravity until the tooth shaft 31 is completely separated from the supporting carrier, completing the tooth removal action.

[0045] The driven gear 34 is controlled by a driving gear (not shown), and the driving gear is controlled by a transmission motor (not shown). The driving gear is transmission-connected with the driven gear 34 to provide driving force therefor.

[0046] After the tooth removal is completed, in order to make the supporting carrier more convenient to detach from the product cavity 5, the tooth removal mechanism 3 is also provided with a push rod 35. The bottom of the push rod 35 is connected to the lifting plate 24 of the lower mold assembly 2, and the upper part passes through the lower mold insert 211 and is placed under the supporting carrier. The lifting plate 24 moves upward, driving the push rod 35 to move together, and the supporting carrier is pushed out of the product cavity 5.

[0047] The working mode of the present invention is as follows:

[0048] The upper mold assembly 1 moves downward and docks with the lower mold assembly 2, and the injection material enters the product cavity 5 through the injection port 111 and the injection runner 6; after the injection material is solidified, the upper mold assembly 1 moves upward by an end distance, at which time the lifting spring lifts the lower mold plate 21 for a distance, and the transmission motor works to drive the driving gear to rotate, thereby rotating the tooth shaft 31, and the tooth shaft 31 gradually separates from the supporting carrier, and at the same time slowly descends under the action of gravity until the tooth shaft 31 is completely separated from the supporting carrier, completing the tooth removal action; then the upper mold assembly 1 is lifted, and the lifting plate 24 moves upward, driving the ejector rod 35 to move together, and the supporting carrier is ejected from the product cavity 5.

[0049] For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, all of which fall within the protection scope of the present invention.

Claims

1. A molding die for a support carrier for a VCM motor, characterized in that: include: An upper mold assembly (1), the upper mold assembly (1) comprising an upper mold top plate (11) and an upper mold plate (12), the upper mold top plate (11) being provided with an injection port (111) for allowing injection material to enter, the upper mold plate (12) being provided with an upper mold insert (121) and an opening and closing mechanism (122), the bottom of the upper mold insert (121) being provided with an upper mold cavity (1211) for molding, and the opening and closing mechanism (122) being provided on both sides of the upper mold insert (121); A lower mold assembly (2), the lower mold assembly (2) comprising a lower mold plate (21), a lower mold bottom plate (22), and a lower support plate (23); the lower mold plate (21) is provided with a lower mold insert (211) matching the upper mold insert (121), and an opening and closing side mold (212) matching the opening and closing mechanism (122); the top of the lower mold insert (211) is provided with a lower mold cavity (2111) matching the upper mold cavity (1211); A tooth removal mechanism (3), the tooth removal mechanism (3) is placed in the lower mold assembly (2) and is arranged below the lower mold insert (211), comprising a tooth axis (31), the tooth axis (31) passes through the lower mold insert (211) and is rotatably connected to the lower mold insert (211), so that the support carrier is separated from the lower mold cavity (2111); wherein, A spring assembly (4) is provided between the lower template (21) and the lower support plate (23); The upper mold cavity (1211), the lower mold cavity (2111), the tooth axis (31), and the opening and closing side mold (212) constitute a product mold cavity (5).

2. The molding die of the support carrier for the VCM motor according to claim 1, characterized in that: The opening and closing side mold (212) comprises an opening and closing block (2121) and a molding block (2122); the opening and closing block (2121) and the molding block (2122) are both slidably connected to the upper mold plate (12); a first locking portion (2123) of the opening and closing block (2121) and a second locking portion (2124) of the molding block (2122) abut against each other; and a sliding groove (2125) matching the opening and closing mechanism (122) is also provided on the opening and closing block (2121).

3. The molding die of the support carrier for the VCM motor according to claim 2, characterized in that: The opening and closing mechanism (122) comprises a left opening and closing plate (1221) and a right opening and closing plate (1222) which are symmetrically arranged, and the bottoms of the left opening and closing plate (1221) and the right opening and closing plate (1222) have an opening and closing portion (1223) which cooperates with the slide groove (2125).

4. The molding die of the support carrier for the VCM motor according to claim 1, characterized in that: The spring assembly (4) comprises four lifting springs, and the lower support plate (23) has a receiving groove (231) for receiving the lifting springs.

5. The molding die of the support carrier for the VCM motor according to claim 1, characterized in that: The tooth stripping mechanism (3) comprises a connecting shaft (32), a transmission shaft (33), and a driven gear (34); the transmission shaft (33) is rotatably connected to the lower mold base plate (22); the driven gear (34) is fixedly arranged on the outer side of the transmission shaft (33); the bottom of the connecting shaft (32) is slidably connected to the upper part of the transmission shaft (33); and the upper part of the connecting shaft (32) is fixedly connected to the tooth shaft (31).

6. The molding die of the support carrier for the VCM motor according to claim 5, characterized in that: The upper portion of the transmission shaft body (33) is provided with a sliding groove (331) that allows the connecting shaft body (32) to slide.

7. The molding die of the support carrier for the VCM motor according to claim 5, characterized in that: The tooth removal mechanism (3) also includes a driving gear, which is controlled by a transmission motor and is in transmission connection with the driven gear (34).

8. The molding die of the support carrier for the VCM motor according to claim 5, characterized in that: The tooth removal mechanism (3) also includes a push rod (35), the bottom of which is connected to the lifting plate (24) of the lower mold assembly (2), and the upper part of which passes through the lower mold insert (211) and is placed below the supporting carrier.

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