Screw cap injection mold

Abstract

This invention discloses a threaded cap injection mold, including a moving mold assembly, a fixed mold assembly, and a top plate assembly. The fixed mold assembly is located below the moving mold assembly and has a threaded core. The top plate assembly is located above the moving mold assembly and connected to it, enabling the moving mold assembly to move up and down, allowing the moving mold assembly and the fixed mold assembly to open and close. When the moving mold assembly and the fixed mold assembly are closed, they can define a cavity. The top plate assembly has a first transmission member, and the fixed mold assembly has a second transmission member that can move horizontally. The top plate assembly can drive the first transmission member to move up and down, and through the first transmission member, drive the second transmission member to move horizontally. A transmission structure is provided between the second transmission member and the threaded core, allowing the second transmission member to drive the threaded core to rotate and move through the transmission structure, causing the threaded core to enter or leave the cavity. This invention utilizes the opening and closing motion between the moving mold assembly and the fixed mold assembly to correspondingly drive the movement of the threaded core, which helps to reduce manufacturing costs and simplify the mold structure.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to a threaded cap injection mold. Background Technology

[0002] In the injection molding process of threaded caps, demolding is a crucial step. Because the cap is threaded, demolding typically requires rotating and moving the threaded mold core to separate it from the cap, followed by ejection from the cavity using a push-out mechanism. In existing threaded cap injection mold designs, a motor or cylinder is usually mounted on the side of the mold to drive the threaded mold core. However, this design not only increases the mold's manufacturing cost but also increases the size of the mold's side panels and requires additional wiring to connect and control the drive device, causing inconvenience in mold production and use. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a threaded cap injection mold, which can drive the threaded mold core to move out of or into the cavity through the opening and closing motion between the moving mold assembly and the fixed mold assembly, without the need for an additional drive device to drive the threaded mold core, which helps to reduce manufacturing costs and simplify the mold structure, and facilitates production and use.

[0004] According to an embodiment of the present invention, a threaded cap injection mold includes a moving mold assembly, a fixed mold assembly, and a top plate assembly. The fixed mold assembly is located below the moving mold assembly and has a threaded core. The top plate assembly is located above the moving mold assembly and is connected to the moving mold assembly, enabling the moving mold assembly to move up and down, allowing the moving mold assembly and the fixed mold assembly to open or close. When the moving mold assembly and the fixed mold assembly are closed, a cavity is defined. The top plate assembly has a first transmission member, and the fixed mold assembly has a second transmission member that can move horizontally. The top plate assembly can drive the first transmission member to move up and down and drive the second transmission member to move horizontally through the first transmission member. A transmission structure is provided between the second transmission member and the threaded core, allowing the second transmission member to drive the threaded core to rotate and move through the transmission structure, causing the threaded core to enter or leave the cavity.

[0005] The threaded cap injection mold according to the embodiments of the present invention has at least the following beneficial effects: In use, the top plate assembly is connected to an external mechanism that drives the mold opening and closing. During the mold closing operation, the top plate assembly moves downward and drives the first transmission member and the moving mold assembly to move downward. The first transmission member drives the second transmission member to move horizontally. The second transmission member drives the threaded mold core to rotate and move upward through the transmission structure. When the moving mold assembly and the fixed mold assembly complete the mold closing, the threaded mold core enters the cavity so that the cap body in the cavity forms a threaded structure during subsequent injection molding. During the mold opening operation, the top plate assembly moves upward and drives the first transmission member and the moving mold assembly to move upward. The first transmission member drives the second transmission member to move horizontally to reset. The second transmission member drives the threaded mold core to rotate and move downward away from the cavity through the transmission structure. After the moving mold assembly and the fixed mold assembly open the mold, the threaded mold core separates from the cap body in the cavity to facilitate the subsequent demolding of the cap body. By adopting the above structure, the injection mold can use the opening and closing motion between the moving mold assembly and the fixed mold assembly to drive the threaded mold core to move out of or into the cavity, without the need for an additional drive device to drive the threaded mold core. This helps to reduce manufacturing costs and simplify the mold structure, making it easier to produce and use.

[0006] According to some embodiments of the present invention, the first transmission member extends downward and is rotatably connected to a roller at its lower end, and the second transmission member is provided with a first transmission groove. The first transmission groove is inclined and has a groove opening on its upper side for the roller to enter. The roller can move up and down with the first transmission member and push against the groove wall of the first transmission groove to drive the second transmission member to move horizontally.

[0007] According to some embodiments of the present invention, a snap-fit ​​recess is provided on the lower side of the first transmission groove, and when the moving mold assembly and the fixed mold assembly are closed, the roller can be snapped into the snap-fit ​​recess.

[0008] According to some embodiments of the present invention, the fixed mold assembly is provided with two first magnetic elements, which are distributed at intervals along the movement direction of the second transmission member, and the second transmission member is provided with corresponding second magnetic elements that can magnetically engage with the first magnetic elements.

[0009] According to some embodiments of the present invention, the transmission structure includes a gear, a first gear, a second gear, and a rotating shaft. The gear is connected to and moves with the second transmission component. The first gear and the second gear are rotatably connected to the fixed mold assembly. The first gear meshes with both the gear and the second gear. The rotating shaft is connected to and rotates with the second gear. The fixed mold assembly has a transmission channel located below the cavity. The threaded mold core is located in the transmission channel and threadedly engaged with the inner wall of the transmission channel. The threaded mold core has a linkage hole. The upper end of the rotating shaft extends into the transmission channel and is inserted into the linkage hole. The threaded mold core can move up and down relative to the rotating shaft. The upper end of the rotating shaft can drive the threaded mold core to rotate by engaging with the linkage hole.

[0010] According to some embodiments of the present invention, the tooth condition cooperates with the second transmission member to define a guide groove, the guide groove extends along the movement direction of the second transmission member, and the fixed mold assembly is correspondingly provided with a guide rail that cooperates with the guide groove.

[0011] According to some embodiments of the present invention, the fixed mold assembly is provided with a mandrel, the linkage hole is provided with a flared vent at the upper end face of the threaded mold core, the mandrel passes through the rotating shaft and the threaded mold core, a venting gap is provided between the upper part of the mandrel and the inner wall of the linkage hole, the mandrel is provided with a venting channel, the venting channel can communicate with the venting port through the venting gap, the upper end of the mandrel is provided with a first plug adapted to the venting port, and the threaded mold core can move up and down relative to the mandrel, so that the first plug blocks or releases the blockage of the venting port.

[0012] According to some embodiments of the present invention, a linkage structure is provided between the moving mold assembly and the top plate assembly. The linkage structure includes a first linkage member and a second linkage member. One of the first linkage member and the second linkage member is disposed in the moving mold assembly, and the other is disposed in the top plate assembly. The first linkage member is provided with a linkage groove, and the second linkage member is located in the linkage groove. When the top plate assembly moves up and down, the second linkage member can move along the linkage groove, so that the moving mold assembly and the top plate assembly can move relative to each other. The top plate assembly can drive the moving mold assembly to move through the abutment of the second linkage member against the end wall of the linkage groove.

[0013] According to some embodiments of the present invention, the fixed mold assembly has a first cooling channel and a second cooling channel inside, and the moving mold assembly has a third cooling channel inside. The side of the fixed mold assembly has a first connector and a second connector. The first connector is connected to the input end of the first cooling channel for inputting coolant into the first cooling channel, and the second connector is connected to the output end of the second cooling channel for outputting coolant from the second cooling channel. Both the output end of the first cooling channel and the input end of the second cooling channel are provided with a first switching valve, and both the input end and the output end of the third cooling channel are provided with a second switching valve. The moving mold assembly... When the moving mold assembly is closed with the fixed mold assembly, the output end of the first cooling channel is connected to the input end of the third cooling channel, and the output end of the third cooling channel is connected to the input end of the second cooling channel. Both the first and second switching valves are in the open state, allowing the third cooling channel to connect to the first and second cooling channels respectively. When the moving mold assembly is opened with the fixed mold assembly, the output end of the first cooling channel is separated from the input end of the third cooling channel, and the output end of the third cooling channel is separated from the input end of the second cooling channel. Both the first and second switching valves are in the closed state.

[0014] According to some embodiments of the present invention, the first switching valve includes a first housing, a first switching element, and a first elastic element. The first housing has a vertically penetrating first channel. The first switching element passes through the first channel and is movably connected to the first housing. The lower end of the first switching element has a second plug. The first elastic element acts on the first switching element, causing the first switching element to have an upward tendency. The second plug can block the lower opening of the first channel under the action of the first elastic element. The second switching valve includes a second housing, a second switching element, and a second elastic element. The second housing has a vertically penetrating second channel. The second switching element passes through the second channel. The second switch is movably connected to the second housing. A third plug is provided at the upper end of the second switch. The second elastic element acts on the second switch, causing it to tend to move downwards. The third plug can block the upper opening of the second channel under the action of the second elastic element. When the moving mold assembly and the fixed mold assembly are closed, the first and second switches can push against each other, causing the first switch to move downwards against the force of the first elastic element, and the second switch to move upwards against the force of the second elastic element. When the moving mold assembly and the fixed mold assembly are opened, the first and second switches separate.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the threaded cap injection mold according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the injection mold for the threaded cap in another state;

[0019] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the injection mold for the threaded cap;

[0020] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0021] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the threaded die core in another state;

[0022] Figure 6 for Figure 1 A schematic diagram of part of the structure of the injection mold for the threaded cap;

[0023] Figure 7 for Figure 1 A schematic diagram of a partial cross-section of the injection mold for the threaded cap at the junction of the cooling channels;

[0024] Figure 8 for Figure 7 A cross-sectional schematic diagram of the structure at the mid-section in another state;

[0025] Figure 9 for Figure 8 A schematic diagram of the cross-sectional structure of the first switching valve in the middle;

[0026] Figure 10 for Figure 8 A schematic diagram of the cross-sectional structure of the second switching valve.

[0027] Figure label:

[0028] Cavity 101, moving mold assembly 110, second linkage 111, third cooling channel 112;

[0029] Fixed mold assembly 210, first magnetic component 211, transmission channel 212, guide rail 213, first cooling channel 214, second cooling channel 215, first connector 216, second connector 217, threaded mold core 220, linkage hole 221, transmission part 222, vent 223, second transmission component 230, first transmission groove 231, groove opening 232, snap-fit ​​recess 233, second magnetic component 234, gear condition 240, guide groove 241, first gear component 250, second gear component 260, rotating shaft component 270, second transmission groove 271, mandrel 280, ventilation gap 281, ventilation channel 282, first plug part 283;

[0030] Top plate assembly 310, first transmission component 320, roller 321, first linkage component 330, linkage groove 331;

[0031] First switching valve 410, first housing 411, first switching element 412, first elastic element 413, first channel 414, second plug 415, first connecting groove 416, connecting pipe 417, second switching valve 420, second housing 421, second switching element 422, second elastic element 423, second channel 424, third plug 425, second connecting groove 426. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of this invention, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] In the description of this invention, if words such as several, greater than, less than, exceeding, above, below, or within appear, then several means one or more, multiple means two or more, greater than, less than, exceeding, etc. are understood to exclude the number itself, and above, below, or within are understood to include the number itself.

[0035] If the terms "first" and "second" are used only to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0037] Reference Figures 1 to 5 A threaded cap injection mold includes a moving mold assembly 110, a fixed mold assembly 210, and a top plate assembly 310. The fixed mold assembly 210 is located below the moving mold assembly 110 and has a threaded mold core 220. The top plate assembly 310 is located above the moving mold assembly 110 and connected to it, enabling the moving mold assembly 110 to move up and down, thus opening or closing the mold between the moving mold assembly 110 and the fixed mold assembly 210. When the moving mold assembly 110 and the fixed mold assembly 210 are closed, they can define a cavity 101. The top plate assembly 310 is provided with a first transmission member 320, and the fixed mold assembly 210 is provided with a second transmission member 230 that can move horizontally. The top plate assembly 310 can drive the first transmission member 320 to move up and down and drive the second transmission member 230 to move horizontally through the first transmission member 320. A transmission structure is provided between the second transmission member 230 and the threaded mold core 220. The second transmission member 230 can drive the threaded mold core 220 to rotate and move through the transmission structure, so that the threaded mold core 220 enters or leaves the cavity 101.

[0038] Understandably, such as Figures 1 to 5 As shown, the top plate assembly 310, moving mold assembly 110, and fixed mold assembly 210 are arranged sequentially from top to bottom. The first transmission member 320 is fixedly mounted on the side of the top plate assembly 310 and can move up and down with it. The second transmission member 230 is movably connected to the fixed mold assembly 210 and can move back and forth relative to it. The threaded mold core 220 is located inside the fixed mold assembly 210 and can rotate and move relative to it. In use, the top plate assembly 310 is connected to an external mechanism that drives the mold opening and closing. (Refer to...) Figure 1 and Figure 2 During mold closing operations, the top plate assembly 310 moves downward, causing the first transmission component 320 and the moving mold assembly 110 to move downward. The first transmission component 320 drives the second transmission component 230 to move horizontally backward. The second transmission component 230, through a transmission structure, drives the threaded mold core 220 to rotate and move upward. (Refer to...) Figure 3 and Figure 4 This allows the upper part of the threaded mold core 220 to enter the cavity 101 when the moving mold assembly 110 and the fixed mold assembly 210 complete mold closing, so that the cover in the cavity 101 forms a threaded structure during subsequent injection molding; see reference. Figure 1 and Figure 2During the mold opening operation, the top plate assembly 310 moves upward, driving the first transmission component 320 and the moving mold assembly 110 to move upward. The first transmission component 320 then drives the second transmission component 230 to move forward horizontally to reset. (Refer to...) Figure 3 , Figure 4 and Figure 5 The second transmission component 230 drives the threaded mold core 220 to rotate and move downward away from the cavity 101 via a transmission structure. This allows the threaded mold core 220 to separate from the cover in the cavity 101 after the moving mold assembly 110 and the fixed mold assembly 210 open, facilitating subsequent demolding of the cover. By adopting the above structure, the injection mold can utilize the opening and closing motion between the moving mold assembly 110 and the fixed mold assembly 210 to drive the threaded mold core 220 to move away from or into the cavity 101, eliminating the need for an additional drive device. This reduces manufacturing costs, simplifies the mold structure, and facilitates production.

[0039] In practical applications, the specific structures of the moving mold assembly 110, the fixed mold assembly 210, and the top plate assembly 310 can be set according to actual usage needs. The specific structures of the first transmission component 320, the second transmission component 230, and the transmission structure will not be described in detail here, but will be explained in detail below.

[0040] In some embodiments, the first transmission member 320 extends downward and is rotatably connected to a roller 321 at its lower end. The second transmission member 230 is provided with a first transmission groove 231. The first transmission groove 231 is inclined and has a groove opening 232 on its upper side for the roller 321 to enter. The roller 321 can move up and down with the first transmission member 320 and push against the groove wall of the first transmission groove 231 to drive the second transmission member 230 to move horizontally.

[0041] Understandably, such as Figure 1 and Figure 2 As shown, the first transmission member 320 extends downward and is rotatably connected to a roller 321 at its lower end. The first transmission groove 231 is inclined relative to the longitudinal direction, so that its front end is lower than its rear end. The groove opening 232 is located at the rear end of the first transmission groove 231. When the first transmission member 320 moves downward, the roller 321 on the first transmission member 320 can enter the first transmission groove 231 from the groove opening 232. The roller 321 moves downward and pushes against the lower side wall of the first transmission groove 231, thereby driving the second transmission member 230 to move backward. When the first transmission member 320 moves upward, the roller 321 moves upward and pushes against the upper side wall of the first transmission groove 231, thereby driving the second transmission member 230 to move forward. This realizes the conversion of the vertical movement of the mold opening and closing into the horizontal reciprocating movement of the second transmission member 230. The structure is simple and easy to use.

[0042] In practical applications, in addition to the above structure, motion conversion can also be achieved through wedge blocks. For example, two cooperating wedge blocks are respectively provided at the lower end of the first transmission member 320 and the upper side of the second transmission member 230. By using the reversing transmission of the wedge structure, the up-and-down movement of the opening and closing mold can be converted into the horizontal reciprocating movement of the second transmission member 230. Alternatively, the first transmission member 320 is connected to a rack extending in the up-and-down direction, and the second transmission member 230 is connected to a rack extending in the front-and-back direction. Both racks mesh with the same gear. When the rack of the first transmission member 320 moves up and down, it will drive the rack of the second transmission member 230 to move back and forth through the gear, thereby realizing the reversing transmission. The specific settings can be adjusted according to the actual needs of use.

[0043] In some embodiments, a snap-fit ​​recess 233 is provided on the lower side of the first transmission groove 231. When the moving mold assembly 110 and the fixed mold assembly 210 are closed, the roller 321 can be snapped into the snap-fit ​​recess 233.

[0044] Understandably, such as Figure 1 and Figure 2 As shown, the locking recess 233 is located on the lower front end of the first transmission groove 231 and is adapted to the shape of the roller 321. When the moving mold assembly 110 and the fixed mold assembly 210 are in the mold-closed state, the roller 321 can be locked into the locking recess 233, thereby restricting the relative movement between the first transmission member 320 and the second transmission member 230, achieving relative fixation between the two, reducing the possibility of the second transmission member 230 loosening and shifting, thereby reducing the possibility of the threaded mold core 220 rotating and moving during the injection molding process, and improving the reliability of use. In practical applications, the size and specific position of the locking recess 233 can be set according to the actual use needs.

[0045] In some embodiments, the fixed mold assembly 210 is provided with two first magnetic elements 211, which are distributed at intervals along the movement direction of the second transmission member 230. The second transmission member 230 is provided with a corresponding second magnetic element 234 that can magnetically engage with the first magnetic elements 211.

[0046] Understandably, such as Figure 1 , Figure 2 and Figure 6As shown, two first magnetic components 211 are spaced apart along the front-to-back direction. Second magnetic components 234 are correspondingly provided at both the front and back of the second transmission component 230. When the moving mold assembly 110 and the fixed mold assembly 210 are in the closed mold state, the second magnetic component 234 on the rear side of the second transmission component 230 magnetically engages with the first magnetic component 211 located on the rear side, thereby magnetically fixing the second transmission component 230 and further reducing the possibility of loosening or shifting of the second transmission component 230, thus preventing the threaded mold core 220 from rotating and moving during injection molding. When the moving mold assembly 110 and the fixed mold assembly 210 are in the open mold state, the second magnetic component 234 on the front side of the second transmission component 230 magnetically engages with the first magnetic component 211 located on the front side, thereby magnetically fixing the second transmission component 230 and preventing the roller 321 from failing to enter the first transmission groove 231 during subsequent mold closing due to a change in the position of the groove opening 232, thus improving reliability. In practical applications, the second magnetic element 234 on the second transmission component 230 can also be set to one, and the specific positions of the first magnetic element 211 and the second magnetic element 234 can be set according to actual usage needs.

[0047] In some embodiments, the transmission structure includes a gear condition 240, a first gear component 250, a second gear component 260, and a rotating shaft component 270. The gear condition 240 is connected to and moves with the second transmission component 230. The first gear component 250 and the second gear component 260 are both rotatably connected to the fixed mold assembly 210. The first gear component 250 meshes with the gear condition 240 and the second gear component 260 respectively. The rotating shaft component 270 is connected to the second gear component 260 and rotates with it. Component 210 is provided with a transmission channel 212, which is located below the cavity 101. The threaded mold core 220 is partially located in the transmission channel 212 and is threadedly engaged with the inner wall of the transmission channel 212. The threaded mold core 220 is provided with a linkage hole 221. The upper end of the rotating shaft 270 extends into the transmission channel 212 and is inserted into the linkage hole 221. The threaded mold core 220 can move up and down relative to the rotating shaft 270. The upper end of the rotating shaft 270 can drive the threaded mold core 220 to rotate by engaging with the linkage hole 221.

[0048] Understandably, such as Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the toothed condition 240 extends in the front-to-back direction and is fixedly connected to the second transmission member 230 so as to move back and forth with the second transmission member 230. The first gear member 250 and the second gear member 260 are both rotatably connected to the fixed mold assembly 210. The first gear member 250 meshes with the toothed condition 240 and the second gear member 260 respectively. When the toothed condition 240 moves back and forth, the toothed condition 240 drives the first gear member 250 to rotate, and the first gear member 250 drives the second gear member 260 to rotate. The rotating shaft member 270 is connected to the second gear member 260 and rotates with the second gear member 260. The rotating shaft member 270 is provided with a second transmission groove 271 extending in the vertical direction. The fixed mold assembly 210 is provided with a transmission channel 212. The transmission channel 212 is located below the cavity 101. The threaded mold core 220 is partially located in the transmission channel 212 and is threadedly engaged with the inner wall of the transmission channel 212. The threaded mold core 220 is provided with a linkage hole 221. The inner wall of the linkage hole 221 is provided with a transmission part 222 corresponding to the second transmission groove 271. The upper end of the rotating shaft 270 extends into the transmission channel 212 and is inserted into the linkage hole 221, so that the threaded mold core 220 and the rotating shaft 270 can move up and down relative to each other. The transmission part 222 on the inner wall of the linkage hole 221 is engaged in the second transmission groove 271 of the rotating shaft 270. When the rotating shaft 270 rotates, the rotating shaft 270 can drive the threaded mold core 220 to rotate through the cooperation of the transmission part 222 and the second transmission groove 271. Through the threaded engagement between the inner wall of the transmission channel 212 and the threaded mold core 220, the threaded mold core 220 will move up and down by the thread engagement when it rotates, so that the threaded mold core 220 can enter or leave the cavity 101 in a spiral motion. Its structure is simple, the transmission is stable and reliable, and it is easy to use.

[0049] In practical applications, the number of rotations of the second gear 260 can be controlled by designing the gear ratio of the first gear 250 and the second gear 260. In addition to the above structure, a rotating wheel can also be fixedly mounted on the first gear 250. The second transmission component 230 frictionally engages with the rotating wheel, allowing the second transmission component 230 to drive the rotating wheel to rotate, thereby rotating the first gear 250. Besides gear meshing transmission, transmission can also be achieved through sprockets and chains, or synchronous pulleys and synchronous belts. (Threaded mold core 220) Alternatively, it can be fixedly connected to the rotating shaft 270, in which case the rotating shaft 270 is threadedly engaged with the inner wall of the transmission channel 212 and can move spirally relative to the transmission channel 212. The threaded mold core 220 and the rotating shaft 270 can also achieve rotational transmission through a non-circular shaft hole. For example, the linkage hole 221 is a square hole structure, and the upper end of the rotating shaft 270 is a corresponding quadrangular prism structure inserted into the linkage hole 221, so that the rotating shaft 270 can drive the threaded mold core 220 to rotate. The specific configuration can be changed according to the actual use requirements.

[0050] In some embodiments, the tooth condition 240 cooperates with the second transmission member 230 to define a guide groove 241, the guide groove 241 extends along the movement direction of the second transmission member 230, and the fixed mold assembly 210 is provided with a guide rail 213 that cooperates with the guide groove 241.

[0051] Understandably, such as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the tooth condition 240 cooperates with the second transmission component 230 to define guide grooves 241 on both the upper and lower sides of the tooth condition 240. The guide grooves 241 extend in the front-back direction, and two guide rails 213 extend in the front-back direction, each cooperating with one of the two guide grooves 241. This effectively guides the front-back movement of the tooth condition 240 and effectively limits its vertical and horizontal positions, ensuring reliable transmission. In practical applications, the specific structure of the guide grooves 241 and guide rails 213 can be customized according to actual usage requirements.

[0052] In some embodiments, the fixed mold assembly 210 is provided with a mandrel 280, and the linkage hole 221 is provided with a flared vent 223 at the upper end face of the threaded mold core 220. The mandrel 280 passes through the rotating shaft 270 and the threaded mold core 220. A ventilation gap 281 is provided between the upper part of the mandrel 280 and the inner wall of the linkage hole 221. The mandrel 280 is provided with a ventilation channel 282, which can connect to the vent 223 through the ventilation gap 281. The upper end of the mandrel 280 is provided with a first plug 283 that is adapted to the vent 223. The threaded mold core 220 can move up and down relative to the mandrel 280, so that the first plug 283 blocks the vent 223 or releases the blockage of the vent 223.

[0053] Understandably, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the mandrel 280 extends vertically, and its lower end is connected and fixed to the fixed mold assembly 210. The mandrel 280 passes through the rotating shaft 270 and the threaded mold core 220. A ventilation gap 281 is provided between the upper part of the mandrel 280 and the inner wall of the linkage hole 221. A ventilation channel 282 is provided inside the mandrel 280. The linkage hole 221 has a flared ventilation port 223 at the upper end face of the threaded mold core 220. A first plug portion 283, adapted to the ventilation port 223, is provided at the upper end of the mandrel 280. (Refer to...) Figure 4 When the mold is closed, the first plug 283 blocks the vent 223, as shown in the reference. Figure 5When the mold is opened, the threaded mold core 220 moves downward spirally. Since the vent 223 has an flared structure, once the threaded mold core 220 moves downward, a gap will appear between the outer wall of the first plug 283 and the inner wall of the vent 223, so that the vent 223 can be quickly unblocked. The vent 282 can connect to the vent 223 through the vent gap 281, thereby avoiding the formation of negative pressure between the upper end face of the threaded mold core 220 and the cover due to the downward movement of the threaded mold core 220, and reducing the possibility of deformation of the cover.

[0054] In practical applications, the ventilation channel 282 can be connected to the external atmosphere or to an external air supply device. The mandrel 280 and the fixed mold assembly 210 can also be movably connected, allowing the mandrel 280 to move up and down. The mandrel 280 can be connected to the push mechanism, which drives the mandrel 280 to move upward and pushes the cover to move, thereby assisting the cover in demolding. The specific settings can be made according to the actual needs of use.

[0055] In some embodiments, a linkage structure is provided between the moving mold assembly 110 and the top plate assembly 310. The linkage structure includes a first linkage member 330 and a second linkage member 111. One of the first linkage member 330 and the second linkage member 111 is provided in the moving mold assembly 110, and the other is provided in the top plate assembly 310. The first linkage member 330 is provided with a linkage groove 331, and the second linkage member 111 is located in the linkage groove 331. When the top plate assembly 310 moves up and down, the second linkage member 111 can move along the linkage groove 331, so that the moving mold assembly 110 and the top plate assembly 310 can move relative to each other. The top plate assembly 310 can drive the moving mold assembly 110 to move through the abutment of the second linkage member 111 against the end wall of the linkage groove 331.

[0056] Understandably, such as Figure 1 and Figure 2As shown, the first linkage 330 is provided on the top plate assembly 310, and the second linkage 111 is correspondingly provided on the moving mold assembly 110. The first linkage 330 is provided with a linkage groove 331 extending in the vertical direction, and the second linkage 111 is located in the linkage groove 331. During mold closing operations, the top plate assembly 310 may first move downward relative to the moving mold assembly 110. At this time, the second linkage 111 moves upward relative to the linkage groove 331. After the top plate assembly 310 moves downward to contact the moving mold assembly 110, it then pushes the moving mold assembly 110 downward together. Alternatively, when the top plate assembly 310 moves downward, it first drives the moving mold assembly 110 downward together through the cooperation of the first linkage 330 and the second linkage 111. After the moving mold assembly 110 cooperates with the fixed mold assembly 210, the top plate assembly 310 continues to move downward relative to the moving mold assembly 110. At this time, the second linkage 111 moves upward relative to the linkage groove 331, and the first transmission member 320 moves downward and drives the second transmission member 230 to move. During mold opening, the top plate assembly 310 moves upward relative to the moving mold assembly 110. At this time, the second linkage 111 moves downward relative to the linkage groove 331, and the first transmission member 320 moves upward, driving the second transmission member 230 to move and reset. When the top plate assembly 310 moves upward to the point where the second linkage 111 contacts the lower end wall of the linkage groove 331, the top plate assembly 310 then drives the moving mold assembly 110 to move upward to open the mold through the contact between the second linkage 111 and the end wall of the linkage groove 331. This structure allows the threaded mold core 220 to move into the cavity 101 when the mold is closed, and allows the threaded mold core 220 to move away from the cavity 101 before mold opening, achieving sequential control and facilitating subsequent demolding operations. In practical applications, the first linkage 330 can also be located on the moving mold assembly 110, in which case the second linkage 111 is located on the top plate assembly 310. The specific structures of the first linkage 330 and the second linkage 111 can also be varied according to actual usage requirements.

[0057] In some embodiments, the fixed mold assembly 210 has a first cooling channel 214 and a second cooling channel 215 inside, and the moving mold assembly 110 has a third cooling channel 112 inside. The side of the fixed mold assembly 210 has a first connector 216 and a second connector 217. The first connector 216 connects to the input end of the first cooling channel 214 for supplying coolant to the first cooling channel 214, and the second connector 217 connects to the output end of the second cooling channel 215 for supplying coolant to the second cooling channel 215. A first switching valve 410 is provided at both the output end of the first cooling channel 214 and the input end of the second cooling channel 215, and a second switching valve 420 is provided at both the input and output ends of the third cooling channel 112. When the mold assembly 110 and the fixed mold assembly 210 are closed, the output end of the first cooling channel 214 is connected to the input end of the third cooling channel 112, and the output end of the third cooling channel 112 is connected to the input end of the second cooling channel 215. The first switching valve 410 and the second switching valve 420 are both in the open state, so that the third cooling channel 112 can be connected to the first cooling channel 214 and the second cooling channel 215 respectively. When the moving mold assembly 110 and the fixed mold assembly 210 are opened, the output end of the first cooling channel 214 is separated from the input end of the third cooling channel 112, and the output end of the third cooling channel 112 is separated from the input end of the second cooling channel 215. The first switching valve 410 and the second switching valve 420 are both in the closed state.

[0058] Understandably, such as Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the fixed mold assembly 210 has a first connector 216 and a second connector 217 on its front side. The fixed mold assembly 210 has a first cooling channel 214 and a second cooling channel 215 inside. The moving mold assembly 110 has a third cooling channel 112 inside. The output end of the first cooling channel 214 and the input end of the second cooling channel 215 are both equipped with a first switching valve 410. The input and output ends of the third cooling channel 112 are both equipped with a second switching valve 420. In use, external pipes are connected to the first connector 216 and the second connector 217. Coolant enters the first cooling channel 214 through the first connector 216. (Refer to...) Figure 3 and Figure 7When the moving mold assembly 110 and the fixed mold assembly 210 are closed, the output end of the first cooling channel 214 connects to the input end of the third cooling channel 112, and the output end of the third cooling channel 112 connects to the input end of the second cooling channel 215. Both the first switching valve 410 and the second switching valve 420 are open, allowing the first cooling channel 214, the third cooling channel 112, and the second cooling channel 215 to connect sequentially. The coolant in the first cooling channel 214 enters the third cooling channel 112 and then enters the second cooling channel 215, subsequently being output through the second connector 217. This achieves cooling of the moving mold assembly 110 and the fixed mold assembly 210, facilitating the shaping of the cover. (Refer to...) Figure 2 and Figure 8 When the moving mold assembly 110 and the fixed mold assembly 210 open the mold, the output end of the first cooling channel 214 is separated from the input end of the third cooling channel 112, and the output end of the third cooling channel 112 is separated from the input end of the second cooling channel 215. The first switching valve 410 and the second switching valve 420 are both in the closed state, so that the connection between the three is disconnected and the coolant cannot be input or output from the connection, thus preventing coolant leakage.

[0059] In traditional injection molds, both the moving and stationary molds have cooling channels. Typically, both the moving and stationary molds are connected to pipes for coolant input and output. This design results in numerous pipes connected to the mold side, leading to a complex structure. Furthermore, the movement of the moving mold causes the pipes to move with it, pulling and straining them, making them prone to loosening and affecting usability. In contrast, the structure of this invention, the third cooling channel 112 of the moving mold assembly 110 connects to the first cooling channel 214 and the second cooling channel 215 of the stationary mold assembly 210 for coolant input and output. The moving mold assembly 110 does not require additional pipes for coolant input and output, simplifying the pipe structure on the mold side. Moreover, since all pipes are connected to the stationary mold assembly 210 and do not move with the moving mold assembly 110, the possibility of loose pipe connections is reduced, making it easier to use.

[0060] In practical applications, the specific flow channel structures of the first cooling channel 214, the second cooling channel 215, and the third cooling channel 112 can be set according to actual usage needs. The specific structures of the first switching valve 410 and the second switching valve 420 will not be described in detail here, but will be explained in detail below.

[0061] In some embodiments, the first switching valve 410 includes a first housing 411, a first switching element 412, and a first elastic element 413. The first housing 411 has a first channel 414 that extends vertically. The first switching element 412 passes through the first channel 414 and is movably connected to the first housing 411. The lower end of the first switching element 412 has a second plug 415. The first elastic element 413 acts on the first switching element 412, causing the first switching element 412 to have an upward tendency. The second plug 415 can block the lower opening of the first channel 414 under the action of the first elastic element 413. The second switching valve 420 includes a second housing 421, a second switching element 422, and a second elastic element 423. The second housing 421 has a second channel 424 that extends vertically. The second switching element 422... The second switch 422 is connected to the second housing 421 via a second channel 424 and can move up and down. The upper end of the second switch 422 is provided with a third plug 425. The second elastic member 423 acts on the second switch 422, causing the second switch 422 to tend to move downward. The third plug 425 can block the upper opening of the second channel 424 under the action of the second elastic member 423. When the moving mold assembly 110 and the fixed mold assembly 210 are molded together, the first switch 412 and the second switch 422 can push against each other and move downward, so that the first switch 412 moves downward against the force of the first elastic member 413 and the second switch 422 moves upward against the force of the second elastic member 423. When the moving mold assembly 110 and the fixed mold assembly 210 are molded together, the first switch 412 and the second switch 422 separate.

[0062] Understandably, such as Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the first channel 414 is vertically continuous, the first switch 412 passes through the first channel 414 and is vertically movable and connected to the first housing 411. The lower end of the first switch 412 is provided with a second plug 415. The first elastic element 413 is a spring, which is sleeved on the first switch 412. The upper and lower ends of the first elastic element 413 act on the first housing 411 and the first switch 412 respectively. The first switching valve 410 is connected to the output end of the first cooling channel 214 or the input end of the second cooling channel 215 through the first housing 411; the second switching valve... The structure of valve 420 is similar to that of the first switching valve 410. The second channel 424 is vertically connected. The second switching element 422 passes through the second channel 424 and can move vertically and is connected to the second housing 421. The upper end of the second switching element 422 is provided with a third plug 425. The second elastic element 423 is a spring, which is sleeved on the second switching element 422. The upper and lower ends of the second elastic element 423 act on the second housing 421 and the second switching element 422 respectively. The second switching valve 420 is connected to the input or output end of the third cooling channel 112 through the second housing 421.

[0063] In the mold-open state, refer to Figure 8 , Figure 9 and Figure 10 The first switch 412 moves upward under the action of the first elastic member 413, causing the second plug 415 to block the lower opening of the first channel 414, and the first switch valve 410 is in the closed state, thereby closing the connection of each cooling channel and preventing coolant leakage.

[0064] When performing mold closing, refer to Figure 7 and Figure 8 The moving mold assembly 110 and the fixed mold assembly 210 move closer to each other, causing the first switching element 412 of the first switching valve 410 and the second switching element 422 of the second switching valve 420 to come into contact. As the mold closes, the two elements push against each other, causing the first switching element 412 to move downward against the force of the first elastic element 413, thus moving the second stopper downward to release the blockage of the first channel 414. The first channel 414 connects the upper and lower flow channels, and the first switching valve 410 is in the open state. At the same time, the second switching element 422 moves upward against the force of the second elastic element 423, thus releasing the blockage of the first channel 414. The third stopper 425 moves upward to release the blockage of the second channel 424, which connects the upper and lower flow channels. The second switch valve 420 is in the open state, so that the first cooling flow channel 214, the third cooling flow channel 112, and the second cooling flow channel 215 are connected in sequence. When the mold is opened, the moving mold assembly 110 and the fixed mold assembly 210 move away from each other, and the first switch element 412 and the second switch element 422 gradually separate. Thus, under the action of the first elastic element 413 and the second elastic element 423, the first switch valve 410 and the second switch valve 420 are restored to the closed state.

[0065] The above structure is simple and reasonable. The first switching valve 410 and the second switching valve 420 are opened when the mold is closed and closed when the mold is opened through mechanical structure. No additional wiring connection and control are required, which makes it easy to use.

[0066] In practical applications, in addition to the above structure, the first switching valve 410 and the second switching valve 420 can also be solenoid valves. The opening and closing of the solenoid valves are controlled by electronic means, thereby opening or closing the connection of each cooling flow channel. Since the specific structure of the solenoid valve in the embodiments of the present invention is known to those skilled in the art, it will not be described in detail here.

[0067] In some embodiments, the first housing 411 is provided with a first connecting groove 416, which is located at the upper opening of the first channel 414 and connects the upper region of the first channel 414 with the first channel 414; the second housing 421 is provided with a second connecting groove 426, which is located at the lower opening of the second channel 424 and connects the lower region of the second channel 424 with the second channel 424. It is understood that, as Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, by setting a first connecting groove 416 and a second connecting groove 426, the first connecting groove 416 connects the upper region of the first channel 414 and the first channel 414, which helps to avoid the upper part of the first switching element 412 and the first elastic element 413 obstructing the entry of coolant from the top into the first channel 414. Similarly, the second connecting groove 426 connects the lower region of the second channel 424 and the second channel 424, which helps to avoid the lower part of the second switching element 422 and the second elastic element 423 obstructing the entry of coolant from the bottom into the second channel 424. When the first switching valve 410 and the second switching valve 420 are in the open state, effective flow of coolant can be ensured, facilitating use. In practical applications, the specific structure of the first connecting groove 416 and the second connecting groove 426 can be set according to actual usage needs.

[0068] In some embodiments, the first housing 411 is provided with a connecting pipe 417, which extends upward and has an upper end face higher than the upper end face of the first switch member 412. When the moving mold assembly 110 and the fixed mold assembly 210 are closed, and before the first switch member 412 and the second switch member 422 come into contact with each other, the connecting pipe 417 is inserted into the docking port corresponding to the third cooling channel 112.

[0069] Understandably, such as Figure 7 , Figure 8 and Figure 9 As shown, the upper end face of the connecting pipe 417 is higher than the upper end face of the first switching element 412. During mold closing and before the first switching element 412 and the second switching element 422 come into contact with each other, the connecting pipe 417 is inserted into the port of the input end or the port of the output end of the third cooling channel 112. This allows the corresponding cooling channels to align before the two switching valves open, reducing the possibility of coolant leakage from the connection point of the cooling channels during valve opening and facilitating use. In practical applications, the connecting pipe 417 can be located on the first housing 411 or the second housing 421. In this case, the connecting pipe 417 extends downward and its lower end face is lower than the lower end face of the second switching element 422. The specific structure of the connecting pipe 417 can be set according to actual usage requirements.

[0070] In some embodiments, when the moving mold assembly 110 and the fixed mold assembly 210 are opening, the first switching valve 410 and the second switching valve 420 can close asynchronously. It is understood that, with other parameters being equal, by setting the elastic moduli of the first elastic element 413 and the second elastic element 423 to be different, the elastic force of the two can differ. Therefore, when the moving mold assembly 110 and the fixed mold assembly 210 are opening, the first switching element 412 and the second switching element 422 can act sequentially or asynchronously due to the difference in elastic force, causing the first switching valve 410 and the second switching valve 420 to close in a preset order. This helps reduce the possibility of coolant accumulation at the junction of the cooling channels and facilitates use. In practical applications, in addition to the above method, the asynchronous closing of the two switching valves can also be achieved by designing a difference in the travel stroke of the first switching element 412 and the second switching element 422. The specific closing order of the first switching valve 410 and the second switching valve 420 can be set according to actual usage needs and is not limited here.

[0071] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A threaded cap injection mold, characterized in that, include: Dynamic model components; A fixed mold assembly, which is located below the moving mold assembly and is provided with a threaded mold core; A top plate assembly is disposed on the upper side of the moving mold assembly and connected to the moving mold assembly. It can drive the moving mold assembly to move up and down, so that the moving mold assembly and the fixed mold assembly can open or close the mold. When the moving mold assembly and the fixed mold assembly are closed, they can define a cavity. The top plate assembly is provided with a first transmission member, and the fixed mold assembly is provided with a second transmission member that can move horizontally. The top plate assembly can drive the first transmission member to move up and down and drive the second transmission member to move horizontally through the first transmission member. A transmission structure is provided between the second transmission member and the threaded mold core. The second transmission member can drive the threaded mold core to rotate and move through the transmission structure, so that the threaded mold core enters or leaves the cavity. The transmission structure includes a gear mechanism, a first gear component, a second gear component, and a rotating shaft component. The gear mechanism is connected to and moves with the second transmission component. Both the first and second gear components are rotatably connected to the fixed mold assembly. The first gear component meshes with both the gear mechanism and the second gear component, respectively. The rotating shaft component is connected to the second gear component and rotates with it. The fixed mold assembly has a transmission channel located below the cavity. The threaded mold core portion is located within the transmission channel and threadedly engages with the inner wall of the transmission channel. The threaded mold core has a linkage hole. The upper end of the rotating shaft component extends into the transmission channel and is inserted into the linkage hole. The threaded die core is movable up and down relative to the rotating shaft. The upper end of the rotating shaft can drive the threaded die core to rotate by cooperating with the linkage hole. The fixed die assembly is provided with a mandrel. The linkage hole is provided with a flared vent at the upper end face of the threaded die core. The mandrel passes through the rotating shaft and the threaded die core. There is a venting gap between the upper part of the mandrel and the inner wall of the linkage hole. The mandrel is provided with a venting channel. The venting channel can connect to the venting port through the venting gap. The upper end of the mandrel is provided with a first plug that matches the venting port. The threaded die core is movable up and down relative to the mandrel, so that the first plug blocks or releases the blockage of the venting port.

2. The threaded cap injection mold according to claim 1, characterized in that, The first transmission member extends downward and is rotatably connected to a roller at its lower end. The second transmission member is provided with a first transmission groove. The first transmission groove is inclined and has a groove opening on its upper side for the roller to enter. The roller can move up and down with the first transmission member and push against the groove wall of the first transmission groove to drive the second transmission member to move horizontally.

3. The threaded cap injection mold according to claim 2, characterized in that, The lower side of the first transmission groove is provided with a snap-fit ​​recess. When the moving mold assembly and the fixed mold assembly are closed, the roller can be snapped into the snap-fit ​​recess.

4. The threaded cap injection mold according to claim 2, characterized in that, The fixed mold assembly is provided with two first magnetic elements, which are distributed at intervals along the movement direction of the second transmission element. The second transmission element is provided with a corresponding second magnetic element that can magnetically engage with the first magnetic elements.

5. The threaded cap injection mold according to claim 1, characterized in that, The tooth condition cooperates with the second transmission component to define a guide groove, the guide groove extends along the movement direction of the second transmission component, and the fixed mold assembly is provided with a guide rail that cooperates with the guide groove.

6. The threaded cap injection mold according to claim 1, characterized in that, A linkage structure is provided between the moving mold assembly and the top plate assembly. The linkage structure includes a first linkage member and a second linkage member. One of the first linkage member and the second linkage member is provided in the moving mold assembly, and the other is provided in the top plate assembly. The first linkage member is provided with a linkage groove, and the second linkage member is located in the linkage groove. When the top plate assembly moves up and down, the second linkage member can move along the linkage groove, so that the moving mold assembly and the top plate assembly can move relative to each other. The top plate assembly can drive the moving mold assembly to move through the abutment of the second linkage member with the end wall of the linkage groove.

7. The threaded cap injection mold according to claim 1, characterized in that, The fixed mold assembly has a first cooling channel and a second cooling channel inside, and the moving mold assembly has a third cooling channel inside. The side of the fixed mold assembly has a first connector and a second connector. The first connector is connected to the input end of the first cooling channel for inputting coolant into the first cooling channel, and the second connector is connected to the output end of the second cooling channel for outputting coolant from the second cooling channel. The output end of the first cooling channel and the input end of the second cooling channel are both provided with a first switching valve, and the input end and the output end of the third cooling channel are both provided with a second switching valve. When the moving mold assembly and the fixed mold assembly are closed, the output end of the first cooling channel is connected to the input end of the third cooling channel, and the output end of the third cooling channel is connected to the input end of the second cooling channel. Both the first switching valve and the second switching valve are in the open state, so that the third cooling channel can be connected to the first cooling channel and the second cooling channel respectively. When the moving mold assembly and the fixed mold assembly open, the output end of the first cooling channel separates from the input end of the third cooling channel, the output end of the third cooling channel separates from the input end of the second cooling channel, and both the first switching valve and the second switching valve are in the closed state.

8. The threaded cap injection mold according to claim 7, characterized in that, The first switching valve includes a first housing, a first switching element, and a first elastic element. The first housing has a first channel that runs vertically through it. The first switching element passes through the first channel and is movably connected to the first housing. The lower end of the first switching element has a second plug. The first elastic element acts on the first switching element, causing the first switching element to have an upward tendency. The second plug can block the lower opening of the first channel under the action of the first elastic element. The second switching valve includes a second housing, a second switching element, and a second elastic element. The second housing has a second channel that runs vertically through it. The second switching element passes through the second channel and is movable vertically connected to the second housing. The upper end of the second switching element has a third plug. The second elastic element acts on the second switching element, causing the second switching element to have a downward tendency. The third plug can block the upper opening of the second channel under the action of the second elastic element. When the moving mold assembly and the fixed mold assembly are closed, the first switch and the second switch can push against each other and move downward, so that the first switch moves downward against the force of the first elastic element, and the second switch moves upward against the force of the second elastic element. When the moving mold assembly and the fixed mold assembly open the mold, the first switch and the second switch separate.

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