Thread orienting device

Abstract

The utility model relates to a thread orienting device, which comprises a female die, a male die, a female die core and a female die, the female die comprises a female die plate and a female die core arranged in the female die plate, and the female die core is provided with a female die forming cavity which is formed by sinking inwards from the surface; the male mold comprises a male mold plate and a male mold core mounted in the male mold plate, the male mold core is provided with a male mold forming cavity formed by sinking inwards from the surface, the male mold is provided with a twisted tooth column core, and the twisted tooth column core extends into the male mold forming cavity to jointly form a forming surface; the hydraulic motor is arranged on the outer side of the male mold, the hydraulic motor drives the twisted tooth column core to rotate, and the twisted tooth column core is provided with an induction block extending outwards; the photoelectric sensing switch is used for detecting the position of the sensing block and recording the number of turns of rotation of the sensing block; the sensing block is arranged on the thread twisting column core, the photoelectric sensing switch is used for monitoring the position of the sensing block in real time, the hydraulic motor stops rotating after rotating to the thread initial position, the initial position of the thread twisting column core is the same every time, and therefore the position of an initial thread is fixed.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and more particularly to a thread orienting device. Background Technology

[0002] In the field of precision injection molding, products with threaded structures (such as bottle caps, connector housings, and medical devices) typically require automatic demolding via a threaded release mechanism in the mold. Traditional thread demolding methods mainly include forced demolding, slider core pulling, and rotary threaded release. Among these, rotary threaded release is the preferred solution for high-precision threaded products because it can form complete and undamaged thread profiles.

[0003] Chinese patent CN219466903U discloses an automatic demolding mold, which includes a mold body and at least one threaded core movably disposed within the mold body. The automatic demolding mold includes a driving device; the driving device includes a first gear rotatably disposed at the non-demolding end of the threaded core, a second gear rotatably disposed on the mold body, and a driving mechanism disposed on the mold body; the first gear meshes with the second gear; the driving mechanism is drivenly connected to the second gear and configured to drive the second gear to rotate. This mold uses an automated means to rotate the threaded core, thereby allowing the threaded core to be demolded from the plastic product. However, in actual production, the threaded core is in a state of continuous rotation during the demolding process, and the stopping position of the threaded core is different each time, which makes it impossible to fix the starting tooth position, resulting in different threads on the molded product.

[0004] Therefore, a thread orientation device needs to be developed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a thread orientation device for fixing the position of the starting tooth.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a thread orienting device, comprising:

[0007] The master mold includes a master template and a master mold core installed in the master template, wherein the master mold core has a master mold forming cavity formed by recessing from the surface inward;

[0008] A male mold includes a male template and a male mold core installed in the male template. The male mold core has a male mold forming cavity formed by recessing from the surface inward. The male mold is provided with a threaded core, which extends into the mold and forms a forming surface together with the male mold forming cavity.

[0009] A hydraulic motor is located on the outside of the male mold. The hydraulic motor drives the coiled thread core to rotate. The coiled thread core has an outwardly extending sensing block.

[0010] A photoelectric sensor switch detects the position of the sensing block and records the number of rotations of the sensing block.

[0011] Furthermore, the mold is equipped with an adjustment plate that extends to one side of the sensing block, and the photoelectric sensor switch is mounted on the adjustment plate.

[0012] Furthermore, the adjustment plate has an elongated hole penetrating its upper and lower surfaces and a fixing bolt penetrating the elongated hole, the fixing bolt penetrating the elongated hole and being fixedly connected to the male mold.

[0013] Furthermore, the public mold includes a public mold support plate, which includes a first public mold support plate, a second public mold support plate, and a third public mold support plate stacked sequentially.

[0014] Furthermore, the third mold support plate has a recessed clearance area formed from the lower surface, and a fixed shaft is formed at the top of the clearance area. The fixed shaft is formed from the protrusion of the surface of the third mold support plate and is fitted with a transmission gear.

[0015] Furthermore, the hydraulic motor has a drive shaft, a drive gear is sleeved on the drive shaft, the coilover core has coilover teeth arranged around its outer surface, and the drive gear and the coilover teeth mesh with the transmission gear.

[0016] Furthermore, the first mold support plate has a receiving groove formed by a recess from the upper surface inward, and an adjustment plate is provided in the receiving groove.

[0017] Furthermore, the male mold is also provided with a core-pulling part, which includes a hydraulic cylinder and a forming mold core driven by the hydraulic cylinder. The hydraulic cylinder drives the forming mold core to enter or exit the male mold core.

[0018] Furthermore, the master mold also includes a cooling channel that extends from the side of the master mold into the master mold and surrounds the master mold core.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model is a thread orientation device with the feature of fixing the position of the starting tooth. By setting a sensing block on the thread core, the position of the sensing block is monitored in real time using a photoelectric sensor switch. The hydraulic motor stops rotating after rotating to the thread starting position. The initial position of the thread core is the same each time, thereby fixing the position of the starting tooth. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0021] Figure 1 This is a three-dimensional structural diagram of a thread orienting device according to the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the mother mold of the thread orientation device shown.

[0023] Figure 3 for Figure 2 A schematic diagram of the exploded structure of the female mold of the thread orientation device shown at another angle;

[0024] Figure 4 for Figure 1 The schematic diagram of the common mold structure of the thread orientation device shown is presented.

[0025] Figure 5 for Figure 4 A schematic cross-sectional view of the male mold of the thread orienting device shown.

[0026] Figure 6 for Figure 4 A schematic diagram of a partial structure of the male mold of the thread orientation device shown;

[0027] Figure 7 for Figure 6 A schematic diagram of a portion of the male mold thread guide of the thread orientation device shown.

[0028] In the diagram: 1. Female mold; 2. Male mold; 11. Upper fixing plate; 12. Female mold plate; 13. Female mold core; 14. Injection port; 15. Injection pipe; 16. Connecting pillar; 17. Guide pillar; 18. Spring; 121. Female mold cavity; 131. Female mold forming cavity; 19. Cooling channel; 21. Base plate; 22. Square iron; 23. Male mold support plate; 24. Male mold plate; 231. First male mold support plate; 232. Second male mold support plate; 233. Third male mold support plate; 234. Separating guide pillar; 235. Clearance area; 236, Fixed shaft; 241, Male mold cavity; 25, Male mold core; 251, Drive shaft; 20, Hydraulic motor; 26, Retractable tooth core; 27, Support plate; 252, Drive gear; 253, Male mold forming cavity; 261, Retractable tooth gear; 262, Induction block; 2311, Receiving groove; 28, Adjustment plate; 29, Photoelectric sensor switch; 281, Long hole; 282, Fixing bolt; 210, Core pulling part; 211, Transmission gear; 2101, Hydraulic cylinder; 2102, Forming mold core. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please refer to Figures 1 to 7 This utility model is a thread orientation device, which includes a female mold 1 and a male mold 2.

[0031] Please refer to Figures 2 to 3 The female mold 1 includes an upper fixed plate 11, a female template 12 connected to the upper fixed plate 11, and a female mold core 13 disposed within the female template 12. The upper fixed plate 11 is fixed to the injection molding machine template (not shown) to transmit the clamping force and ensure the overall stability of the female mold. The upper fixed plate 11 has an injection port 14, which is connected to an injection pipe 15. The injection pipe 15 passes through the upper fixed plate 11 and the female template 12 in sequence and enters the female mold core 13. The upper fixed plate 11 is equipped with several connecting posts 16 and several guide posts 17. The number of connecting posts 16 and guide posts 17 can be changed according to requirements. One end of the connecting post 16 is connected to the upper fixed plate 11, and the other end is vertically fixedly connected to the female template 12. A spring 18 is sleeved on the connecting post 16, and the two ends of the spring 18 respectively abut against the upper fixed plate 11 and the female template 12. The guide post 17 vertically penetrates the female template 12 and mates with the male mold 2.

[0032] The master mold 12 has a master mold cavity 121 formed by recessing from the lower surface. The master mold core 13 is located in the master mold cavity 121. The master mold core 13 has a master mold forming cavity 131 formed by recessing from the lower surface. The shape of the master mold forming cavity 131 matches part of the shape of the product. The injection pipe 15 is connected to the master mold forming cavity 131.

[0033] The female mold 1 also includes a cooling channel 19, which extends from the side of the female mold plate 12 into the female mold plate 12 and surrounds the female mold core 13.

[0034] Please refer to Figures 4 to 7The male mold 2 includes a base plate 21, a square iron 22 mounted on the base plate 21, a male mold support plate 23 located on the square iron 22, and a male mold template 24. The base plate 21 is connected to the injection molding machine (not shown) to fix the template. The square iron 22 is fixed to the base plate 21 by bolts to support the male mold support plate 23. Specifically, the male mold support plate 23 includes a first male mold support plate 231, a second male mold support plate 232, and a third male mold support plate 233. The first male mold support plate 231, the second male mold support plate 232, and the third male mold support plate 233 are stacked in sequence. The first male mold support plate 231 is fixedly connected to the square iron 22 and is equipped with a partition guide post 234. The bottom of the partition guide post 234 is fixedly connected to the first male mold support plate 231, and its top passes through the second male mold support plate 232 and the third male mold support plate 233 in sequence and is connected to the male mold template 24. The male mold template 24 is installed on the third male mold support plate 233.

[0035] The male mold plate 24 has a male mold cavity 241 extending through its upper and lower surfaces. A male mold core 25 is installed inside the male mold cavity 241. The male mold core 25 has a male mold forming cavity 253 formed by recessing from its surface inward. The shape of the male mold forming cavity 253 matches the shape of the product.

[0036] The male mold 2 also includes a hydraulic motor 20 and a coiled core 26 driven by the hydraulic motor 20. The hydraulic motor 20 is installed on the side of the male mold support plate 23. Specifically, a support plate 27 is installed on the side of the male mold support plate 23. One end of the support plate 27 is fixedly connected to the male mold support plate 23, and the other end extends vertically outward. The hydraulic motor 20 is installed on the support plate 27 and has a drive shaft 251. The drive shaft 251 is sleeved with a drive gear 252. The third male mold support plate 233 has a recessed clearance area 235 formed from the lower surface. A fixed shaft 236 is formed at the top of the clearance area 235. The fixed shaft 236 protrudes from the surface of the third male mold support plate 233 and is sleeved with a transmission gear 211. The transmission gear 211 extends out of the third male mold support plate 233 and meshes with the drive gear 252.

[0037] The top of the coiled tooth core 26 extends into the mold forming cavity 253 to form the threaded portion of the product. It has a coiled tooth wheel 261 arranged around its outer surface, which meshes with the transmission gear 211.

[0038] Furthermore, the first male mold support plate 231 has a receiving groove 2311 formed by a recess inward from its upper surface. The receiving groove 2311 is provided with an adjustment plate 28, which extends to one side of the coiled thread core 26. A photoelectric sensor switch 29 is installed at its end. The coiled thread core 26 has a sensing block 262, which rotates synchronously with the coiled thread core 26. The photoelectric sensor switch 29 is used to sense and record the position of the sensing block 262. Specifically, the adjustment plate 28 has an elongated hole 281 penetrating its upper and lower surfaces and a fixing bolt 282 penetrating the elongated hole 281. The fixing bolt 282 is fixedly connected to the first male mold support plate 231 through the elongated hole 281, and the position of the photoelectric sensor switch 29 is adjusted through the elongated hole 281.

[0039] In another embodiment, the male mold 2 is further provided with a core-pulling part 210 including a hydraulic cylinder 2101 and a molding core 2102 driven by the hydraulic cylinder 2101. The hydraulic cylinder 2101 is installed on the side of the male mold 2 and drives the molding core 2102 to enter or exit the male mold core 25. Specifically, the molding core 2102 is placed in the male mold molding cavity 253. After injection molding, the hydraulic cylinder 2101 drives the molding core 2102 to exit the male mold molding cavity 253, which facilitates demolding.

[0040] When using the thread orienting device of this utility model, the injection molding machine injects molten plastic into the closed cavity formed by the closed female mold forming cavity 131 and the male mold forming cavity 253 through the injection port 14 and injection pipe 15 of the female mold 1. The plastic fills the female mold forming cavity 131 and the male mold forming cavity 253, including the threaded area formed by the threaded core 26 and the lateral structure (such as holes or grooves) formed by the forming core 2102. After the product is formed, the hydraulic motor 20 starts, and the drive shaft 251 drives the drive gear 252 to rotate. The drive gear 252 meshes with the transmission gear 211 to transmit power to the threaded tooth 261 of the threaded core 26. The sensing block 262 rotates with the threaded core 26. The photoelectric sensor switch 29 monitors the position in real time. The signal is linked with the injection molding machine. The injection molding machine records the number of revolutions for each rotation of the hydraulic motor 20. After the product is demolded, the hydraulic motor 20 rotates to the starting position and then stops rotating. The initial position of the threaded core 26 is the same each time.

[0041] This utility model is a thread orienting device with the feature of fixing the position of the starting tooth. By setting a sensing block on the threaded core, the position of the sensing block is monitored in real time using a photoelectric sensor switch. The hydraulic motor stops rotating after rotating to the thread starting position. The initial position of the threaded core is the same each time, thereby fixing the position of the starting tooth.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A thread orientation device, characterized in that, include: The master mold (1) includes a master template (12) and a master mold core (13) installed in the master template (12), wherein the master mold core (13) has a master mold forming cavity (131) formed by recessing from the surface inward; The male mold (2) includes a male template (24) and a male mold core (25) installed in the male template (24). The male mold core (25) has a male mold forming cavity (253) formed by recessing from the surface inward. The male mold (2) is provided with a threaded core (26). The threaded core (26) extends into the male mold forming cavity (253) to form a forming surface. A hydraulic motor (20) is located on the outside of the male mold (2). The hydraulic motor (20) drives the coiled tooth core (26) to rotate. The coiled tooth core (26) has an outwardly extending sensing block (262). The photoelectric sensor switch (29) detects the position of the sensing block (262) and records the number of rotations of the sensing block (262).

2. The thread orientation device according to claim 1, characterized in that, The mold (2) is equipped with an adjustment plate (28), which extends to one side of the sensing block (262), and the photoelectric sensor switch (29) is mounted on the adjustment plate (28).

3. The thread orientation device according to claim 2, characterized in that, The adjustment plate (28) has an elongated hole (281) penetrating its upper and lower surfaces and a fixing bolt (282) penetrating the elongated hole (281). The fixing bolt (282) is fixedly connected to the male mold (2) through the elongated hole (281).

4. The thread orientation device according to claim 1, characterized in that, The public mold (2) includes a public mold support plate (23), which includes a first public mold support plate (231), a second public mold support plate (232), and a third public mold support plate (233) stacked in sequence.

5. The thread orientation device according to claim 4, characterized in that, The third mold support plate (233) has a recessed clearance area (235) formed from the lower surface. A fixed shaft (236) is formed at the top of the clearance area (235). The fixed shaft (236) is formed from the surface of the third mold support plate (233) and is fitted with a transmission gear (211).

6. The thread orienting device according to claim 5, characterized in that, The hydraulic motor (20) has a drive shaft (251) with a drive gear (252) sleeved on the drive shaft (251). The coilover core (26) has coilover gears (261) arranged around its outer surface. The drive gear (252) and the coilover gears (261) mesh with the transmission gear (211).

7. The thread orientation device according to claim 5, characterized in that, The first mold support plate (231) has a receiving groove (2311) formed by recessing from the upper surface inward, and an adjustment plate (28) is provided in the receiving groove (2311).

8. The thread orientation device according to claim 1, characterized in that, The male mold (2) is also provided with a core-pulling part (210), which includes a hydraulic cylinder (2101) and a forming mold core (2102) driven by the hydraulic cylinder (2101). The hydraulic cylinder (2101) drives the forming mold core (2102) to enter or exit the male mold core (25).

9. The thread orienting device according to claim 1, characterized in that, The female mold (1) also includes a cooling channel (19), which extends from the side of the female mold plate (12) into the female mold plate (12) and surrounds the female mold core (13).

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