Three-color injection mold with cross-axis water flow structure

Abstract

This invention relates to the field of injection mold technology, and in particular to a three-color injection mold with a cross-axis water-cooling structure. The mold includes a fixed mold assembly, a moving mold assembly, and a molding assembly. The molding assembly includes an upper core, a lower core, and a cross-axis water-cooling mechanism. The cross-axis water-cooling mechanism includes a first drive arm and a second drive arm arranged in a cross configuration, an insert hinged at one end to the first drive arm, a rotating clamp hinged at one end to the second drive arm, and a water outlet pipe connected at one end to the rotating clamp. The water outlet pipe is located on the side of the rotating clamp facing the first and second drive arms, and a protective member fixed to the fixed mold assembly is provided on one side of the water outlet pipe. The three-color injection mold with a cross-axis water-cooling structure provided by this application extends the service life of the water outlet pipe, eliminating the need for frequent replacement and reducing the manpower and material costs of later maintenance.

Description

[Technical Field]

[0002] This invention relates to the field of injection mold technology, and in particular to a three-color injection mold with a cross-axis water channel structure. [Background Technology]

[0004] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, molds are tools used to create shaped articles. Injection molds are devices used to mold thermoplastic or thermosetting materials into various shapes of plastic products. Injection molds are widely used in the compression or injection molding of engineering plastics, rubber, ceramics, and other products. Injection molds have specific contours or internal cavity shapes; by applying the internal cavity shape, the blank can obtain a corresponding three-dimensional shape. Current injection molding processes involve first adding plastic into the heated barrel of an injection molding machine. The plastic melts upon heating and, driven by the screw or plunger of the injection molding machine, enters the mold cavity through the nozzle and the mold gating system. Due to physical and chemical reactions, it hardens and solidifies into an injection-molded product.

[0005] Existing three-color injection molds use cross-shaft connected water outlet pipes to cool and shape the injection molded parts with water. In the existing technology, the water outlet pipe is usually set at the upper end of the cross-shaft, and in order to allow for the degree of freedom of rotation of the rotating clamp, a certain length of the water outlet pipe is often reserved. As a result, the water outlet pipe is bent over a long period of time, which leads to damage. The maintenance cost is high, and maintenance requires the complete removal of the mold, which is difficult. [Summary of the Invention]

[0007] The purpose of this invention is to provide a three-color injection mold with a cross-axis water supply structure, which extends the service life of the water outlet pipe, eliminates the need for frequent replacement of the water outlet pipe, and reduces the manpower and material costs of later maintenance.

[0008] This application is achieved through the following technical solution: a three-color injection mold with a cross-axis water-transporting structure, including a fixed mold group, a moving mold group, and a molding module installed between the fixed mold group and the moving mold group. The molding module includes an upper core, a lower core, and a cross-axis water-transporting mechanism installed on the lower core. The cross-axis water-transporting mechanism is combined with the upper core and the lower core to form a cavity. The cross-axis water-transporting mechanism includes a first drive arm and a second drive arm arranged in a cross configuration, an insert with one end hinged to the first drive arm, a rotating clamp with one end hinged to the second drive arm, and a water outlet pipe with one end connected to the rotating clamp. The water outlet pipe is located on the side of the rotating clamp facing the first drive arm and the second drive arm. A protective member fixed to the fixed mold group is provided on one side of the water outlet pipe. When the second drive arm drives the rotating clamp to rotate, the water outlet pipe switches from a bent state when the mold is closed to a straightened state when the mold is opened.

[0009] As described above, the three-color injection mold with a cross-axis water-carrying structure has an annular cavity on the lower core for placing the rotating clamp and the insert. The cross-axis water-carrying mechanism also includes a first driving device hinged to the first driving arm and a second driving device hinged to the second driving arm. The water outlet pipe is connected to the second driving device. When the second driving device moves away from the first driving device, it drives the end of the water outlet pipe connected to the second driving device to move, and simultaneously drives the second driving arm to move in conjunction with the rotating clamp to rotate, so that the water outlet pipe is stretched from an initial bent state to a straight state.

[0010] As described above, in a three-color injection mold with a cross-axis water-carrying structure, the second driving device includes a fixed base connected to the fixed mold assembly, a slider slidably connected to the fixed base, and a driving group connected to the slider. The second driving arm is hinged to the slider, the water outlet pipe is connected to the slider, and the driving group drives the slider to move in a direction closer to / away from the first driving device.

[0011] As described above, in a three-color injection mold with a cross-axis water-cooling structure, the drive assembly includes a fixed post connected and fixed to the slider, a drive component fixed to the fixed mold assembly, and a transmission rod connecting the drive component and the fixed post. The fixed post has a groove on the side away from the slider, and an opening on the side of the groove facing the transmission rod. The transmission rod passes through the opening and is engaged in the groove.

[0012] As described above, in the three-color injection mold with a cross-axis water-carrying structure, the slider has fixed grooves on both sides, and the fixed seat has a flange protruding from the fixed grooves.

[0013] As described above, in a three-color injection mold with a cross-axis water-cooling structure, the second driving device further includes a pressure sensor mounted on the fixed base and a guide rod fixed on the slider and corresponding to the pressure sensor. A sleeve is fitted on the guide rod, and the sleeve is shaped with both sides bulging towards the middle. A roller is provided on the side of the pressure sensor facing the guide rod. The slider drives the guide rod to move, and the sleeve squeezes the roller to trigger the pressure sensor to respond.

[0014] As described above, the three-color injection mold with a cross-axis water-transporting structure further includes an anti-rotation mechanism corresponding to the cross-axis water-transporting mechanism. The anti-rotation mechanism includes a drive seat and an anti-rotation rod connected to the drive seat. When the moving mold assembly moves toward the fixed mold assembly, the drive seat pushes the anti-rotation rod into the cross-axis water-transporting mechanism to lock the cross-axis water-transporting mechanism.

[0015] As described above, the three-color injection mold with a cross-axis water-carrying structure includes a drive base fixed to the fixed mold assembly, a movable seat slidably connected to the base, a pusher fixed to the moving mold assembly, and a guide post fixed to the moving mold assembly and obliquely passing through the movable seat. The anti-rotation rod is fixed to the movable seat. The pusher and the movable seat have an inclined surface on their opposite sides. The base and the movable seat are respectively provided with slots. When the moving mold assembly moves toward the fixed mold assembly, the pusher pushes the movable seat to move toward the cross-axis water-carrying mechanism.

[0016] As described above, in the three-color injection mold with a cross-axis water-cooling structure, the base is provided with a limiting groove, and the pusher is provided with a protrusion corresponding to the limiting groove, so that when the moving mold assembly moves toward the fixed mold assembly, the protrusion engages in the limiting groove, thereby restricting the movement of the pusher.

[0017] Compared with the prior art, this application has the following advantages:

[0018] The present invention discloses a three-color injection mold with a cross-axis water-transporting structure, comprising a fixed mold assembly, a moving mold assembly, and a molding assembly disposed between the fixed mold assembly and the moving mold assembly. The molding assembly comprises an upper core, a lower core, and a cross-axis water-transporting mechanism disposed on the lower core. The cross-axis water-transporting mechanism is combined with the upper core and the lower core to form a cavity. The cross-axis water-transporting mechanism comprises a first drive arm and a second drive arm arranged in a cross configuration, an insert hinged at one end to the first drive arm, a rotating clamp hinged at one end to the second drive arm, and a water outlet pipe connected at one end to the rotating clamp. The water outlet pipe is disposed on the side of the rotating clamp facing the first drive arm and the second drive arm. A protective component fixed to the fixed mold assembly is provided on one side of the water outlet pipe, which extends the service life of the water outlet pipe, eliminates the need for frequent replacement of the water outlet pipe, and reduces the manpower and material costs of later maintenance. [Attached Image Description]

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

[0021] Figure 1 This is a schematic diagram of the structure of a three-color injection mold according to an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the molding die according to an embodiment of this application.

[0023] Figure 3 This is an exploded view of the molding die in an embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the cross-axis water conveyance mechanism according to an embodiment of this application.

[0025] Figure 5 This is an exploded view of the cross-axis water conveyance mechanism according to an embodiment of this application.

[0026] Figure 6 This is a schematic diagram of the structure of the second driving device according to an embodiment of this application.

[0027] Figure 7 This is a structural schematic diagram of the second driving device according to an embodiment of this application from another angle.

[0028] Figure 8 This is a schematic diagram of the anti-rotation mechanism according to an embodiment of this application.

[0029] Figure 9 This is an exploded view of the anti-rotation mechanism according to an embodiment of this application.

Detailed Implementation Methods

[0031] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0032] like Figure 1-9As shown in the embodiment of this application, a three-color injection mold with a cross-axis water-transporting structure is proposed, including a fixed mold group 1, a moving mold group 2, and a molding module 3 installed between the fixed mold group 1 and the moving mold group 2. The molding module 3 includes an upper core 31, a lower core 32, and a cross-axis water-transporting mechanism 33 installed on the lower core 32. The cross-axis water-transporting mechanism 33 is combined with the upper core 31 and the lower core 32 to form a cavity. The cross-axis water-transporting mechanism 33 includes a first drive arm 331 and a second drive arm 332 arranged crosswise, an insert 333 with one end hinged to the first drive arm 331, a rotating clamp 334 with one end hinged to the second drive arm 332, and a water outlet pipe 335 with one end connected to the rotating clamp 334. The water outlet pipe 335 is arranged on the rotating clamp 334 facing the first drive arm 331 and the second drive arm 332. On one side, a protective component 4 is fixed to the fixed mold assembly 1. When the second drive arm 332 drives the rotating clamp 334 to rotate, the water outlet pipe 335 switches from a bent state when the mold is closed to a straight state when the mold is opened. The existing cross-axis water conveying mechanism mainly sets the water outlet pipe above the rotating clamp, and the rotating clamp rotates in a direction away from the water outlet pipe. Therefore, the water outlet pipe is often left with a certain length. During use, the water outlet pipe is in a bent state for a long time and is bent when the rotating clamp rotates, which greatly reduces its service life. By setting the water outlet pipe 335 below the rotating clamp 334, the degree of bending of the water outlet pipe 335 and the required degree of bending are lower during the overall use. This extends the service life of the water outlet pipe, eliminates the need for frequent replacement of the water outlet pipe, and reduces the manpower and material costs of later maintenance.

[0033] The lower core 32 is provided with an annular receiving cavity 321 for placing the rotating clamp 334 and the insert 333. The cross-axis water conveying mechanism 33 further includes a first driving device 336 hinged to the first driving arm 331 and a second driving device 337 hinged to the second driving arm 332. The water outlet pipe 335 is connected to the second driving device 337. When the second driving device 337 moves away from the first driving device 336, it drives the end of the water outlet pipe 335 connected to the second driving device 337 to move, and simultaneously drives the second driving arm 332 to move in conjunction with the rotating clamp 334 to rotate, so that... The water outlet pipe 335 is stretched from its initial bent state to a straight state. When the second driving device 337 moves, the end of the water outlet pipe 335 connected to the second driving device 337 moves backward with the second driving device 337. The second driving device 337 drives the second driving arm 332 to move backward, thereby driving the rotating clamp 334 to rotate around the annular accommodating cavity 321. The end of the water outlet pipe 335 connected to the rotating clamp 334 tilts downward toward the second driving device 337, so that the water outlet pipe 335 is stretched from its initial bent state to a straight state, reducing the degree of bending of the water outlet pipe 335 and ensuring its service life.

[0034] The second driving device 337 includes a fixed base 3371 connected to the fixed mold assembly 1, a slider 3372 slidably connected to the fixed base 3371, and a driving assembly 3373 connected to the slider 3372. The second driving arm 332 is hinged to the slider 3372. The water outlet pipe 335 is connected to the slider 3372. The driving assembly 3373 drives the slider 3372 to move in a direction closer to / away from the first driving device 336. The driving assembly 3373 includes a fixed post 3374 fixed to the slider 3372, a driving member 3375 fixed to the fixed mold assembly 1, and a drive assembly 3373 connecting the driving member 3375 and the fixed post 3372. The fixed column 3374 has a transmission rod 3376. The fixed column 3374 has a groove 3377 on the side away from the slider 3372. The groove 3377 has an opening 3378 on the side facing the transmission rod 3376. The transmission rod 3376 passes through the opening 3378 and is engaged in the groove 3377. The drive assembly 3373 drives the slider 3372 to move along the length of the fixed seat 3371. The slider 3372 has fixing grooves 3379 on both sides. The fixed seat 3371 has flanges 3370 corresponding to the fixing grooves 3379. The assembly is simple and quick, easy to process and produce, and has high stability.

[0035] The second driving device 337 further includes a pressure sensor 338 mounted on the fixed base 3371 and a guide rod 339 fixed on the slider 3372 and corresponding to the pressure sensor 338. A sleeve 3391 is sleeved on the guide rod 339. The sleeve 3391 is shaped with both sides sloping and protruding towards the middle. A roller 3381 is provided on the side of the pressure sensor 338 facing the guide rod 339. The slider 3372 drives the guide rod 339 to move. The sleeve 3391 squeezes the roller 3381 to trigger the pressure sensor 338 to respond. Due to the shape of the sleeve 3391 sloping and protruding towards the middle, when it contacts the roller 3381 on the pressure sensor 338, it can slow down the movement speed of the slider 3372 to a certain extent while ensuring the detection accuracy of the pressure sensor 338. This avoids the relative speed of the slider 3372 and the rotating clamp 334 being inconsistent, which could cause tensile damage to the water outlet pipe 335.

[0036] The molding die 3 further includes an anti-rotation mechanism 34 corresponding to the cross-axis water conveying mechanism 33. The anti-rotation mechanism 34 includes a drive seat 341 and an anti-rotation rod 342 connected to the drive seat 341. When the moving mold assembly 2 closes towards the fixed mold assembly 1, the drive seat 341 pushes the anti-rotation rod 342 into the cross-axis water conveying mechanism 33 to lock the cross-axis water conveying mechanism 33. The drive seat 341 includes a base 3411 fixed to the fixed mold assembly 1, a movable seat 3412 slidably connected to the base 3411, a pusher 3413 fixed to the moving mold assembly 2, and a guide post 3415 fixed to the moving mold assembly 2 and obliquely passing through the movable seat 3412. The anti-rotation rod 342 is fixed to the movable seat 3412. The pusher 3413 and the movable seat 3412 are provided with inclined surfaces 3416 on opposite sides. The base 3411 and the movable seat 3412 are respectively provided with slots 3417. When the moving module 2 closes towards the fixed module 1, the pusher 3413 pushes the movable seat 3412 to move towards the cross-axis water conveying mechanism 33. When the moving module 2 moves closer to the fixed module 1 to close, the pusher 3413 pushes the movable seat 3412 to move towards the cross-axis water conveying mechanism 33 to lock it. When the moving module 2 moves away from the fixed module 1 to demold, the guide post 3415 drives the movable seat 3412 to move away from the cross-axis water conveying mechanism 33 to release the lock on the cross-axis water conveying mechanism 33.

[0037] The base 3411 is provided with a limiting groove 3418, and the pusher 3413 is provided with a protrusion 3419 corresponding to the limiting groove 3418, so that when the moving module 2 closes towards the fixed module 1, the protrusion 3419 is engaged in the limiting groove 3418 to restrict the movement of the pusher 3413.

[0038] In summary, this application has, but is not limited to, the following beneficial effects:

[0039] The present invention discloses a three-color injection mold with a cross-axis water-transporting structure, comprising a fixed mold assembly 1, a moving mold assembly 2, and a molding assembly 3 disposed between the fixed mold assembly 1 and the moving mold assembly 2. The molding assembly 3 includes an upper core 31, a lower core 32, and a cross-axis water-transporting mechanism 33 mounted on the lower core 32. The cross-axis water-transporting mechanism 33 combines with the upper core 31 and the lower core 32 to form a cavity. The cross-axis water-transporting mechanism 33 includes a first drive arm 331 and a second drive arm 332 arranged in a cross configuration, an insert 333 hinged at one end to the first drive arm 331, a rotating clamp 334 hinged at one end to the second drive arm 332, and a water outlet pipe 335 connected at one end to the rotating clamp 334. The water outlet pipe 335 is disposed on the side of the rotating clamp 334 facing the first drive arm 331 and the second drive arm 332. A protective component 4 is fixed to the fixed mold assembly 1 on one side of the water outlet pipe 335. When the second drive arm 332 drives the rotating clamp 334 to rotate, the water outlet pipe 335 switches from a bent state when the mold is closed to a straight state when the mold is opened. The existing cross-axis water conveying mechanism mainly sets the water outlet pipe above the rotating clamp, and the rotating clamp rotates in a direction away from the water outlet pipe. Therefore, the water outlet pipe is often left with a certain length. During use, the water outlet pipe is in a bent state for a long time and is bent when the rotating clamp rotates, which greatly reduces its service life. By setting the water outlet pipe 335 below the rotating clamp 334, the degree of bending of the water outlet pipe 335 and the required degree of bending are lower during the overall use. This extends the service life of the water outlet pipe, eliminates the need for frequent replacement of the water outlet pipe, and reduces the manpower and material costs of later maintenance.

[0040] It should be understood that the terms "first," "second," etc., are used in this application to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 application.

[0041] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to or identical to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A three-color injection mold with a cross-axis water-cooling structure, characterized in that, The system includes a fixed module (1), a moving module (2), and a molding module (3) installed between the fixed module (1) and the moving module (2). The molding module (3) includes an upper core (31), a lower core (32), and a cross-axis water conveying mechanism (33) installed on the lower core (32). The cross-axis water conveying mechanism (33) is connected to the upper core (31) and the lower core (32). The cross-axis water conveying mechanism (33) is assembled to form a cavity. It includes a first drive arm (331) and a second drive arm (332) arranged in a cross configuration, an insert (333) with one end hinged to the first drive arm (331), a rotating clamp (334) with one end hinged to the second drive arm (332), and a water outlet pipe (335) with one end connected to the rotating clamp (334). The water outlet pipe (335) is located on the side of the rotating clamp (334) facing the first drive arm (331) and the second drive arm (332). A protective member (4) fixed to the fixed mold assembly (1) is provided on one side of the water outlet pipe (335). The water outlet pipe (335) is located below the rotating clamp (334). When the second drive arm (332) drives the rotating clamp (334) to rotate, the water outlet pipe (335) switches from a bent state when the mold is closed to a straight state when the mold is opened.

2. The three-color injection mold with a cross-axis water-cooling structure according to claim 1, characterized in that, The lower core (32) is provided with an annular receiving cavity (321) for placing the rotating clamp (334) and the insert (333) therein. The cross-axis water conveying mechanism (33) also includes a first driving device (336) hinged to the first driving arm (331) and a second driving device (337) hinged to the second driving arm (332). The water outlet pipe (335) is connected to the second driving device (337). When the second driving device (337) moves away from the first driving device (336), it drives the end of the water outlet pipe (335) connected to the second driving device (337) to move, and simultaneously drives the second driving arm (332) to move in conjunction with the rotating clamp (334) to rotate, so that the water outlet pipe (335) is stretched from the initial bent state to a straight state.

3. The three-color injection mold with a cross-axis water-cooling structure according to claim 2, characterized in that, The second driving device (337) includes a fixed base (3371) connected to the fixed module (1), a slider (3372) slidably connected to the fixed base (3371), and a driving group (3373) connected to the slider (3372). The second driving arm (332) is hinged to the slider (3372), the water outlet pipe (335) is connected to the slider (3372), and the driving group (3373) drives the slider (3372) to move in the direction of approaching / moving away from the first driving device (336).

4. The three-color injection mold with a cross-axis water-cooling structure according to claim 3, characterized in that, The drive assembly (3373) includes a fixed post (3374) connected and fixed to the slider (3372), a drive component (3375) fixed to the fixed mold assembly (1), and a transmission rod (3376) connecting the drive component (3375) and the fixed post (3374). The fixed post (3374) has a groove (3377) on the side away from the slider (3372), and an opening (3378) on the side of the groove (3377) facing the transmission rod (3376). The transmission rod (3376) passes through the opening (3378) and is engaged in the groove (3377).

5. The three-color injection mold with a cross-axis water-cooling structure according to claim 3, characterized in that, The slider (3372) has fixing grooves (3379) on both sides, and the fixing seat (3371) has a flange (3370) protruding from the fixing groove (3379).

6. The three-color injection mold with a cross-axis water-cooling structure according to claim 3, characterized in that, The second driving device (337) further includes a pressure sensor (338) mounted on the fixed base (3371) and a guide rod (339) fixed on the slider (3372) and corresponding to the pressure sensor (338). A sleeve (3391) is sleeved on the guide rod (339). The sleeve (3391) is shaped with both sides bulging towards the middle. A roller (3381) is provided on the side of the pressure sensor (338) facing the guide rod (339). The slider (3372) drives the guide rod (339) to move. The sleeve (3391) squeezes the roller (3381) to trigger the pressure sensor (338) to respond.

7. The three-color injection mold with a cross-axis water-cooling structure according to claim 1, characterized in that, The molding module (3) also includes an anti-rotation mechanism (34) corresponding to the cross-axis water conveying mechanism (33). The anti-rotation mechanism (34) includes a drive seat (341) and an anti-rotation rod (342) connected to the drive seat (341). When the moving module (2) closes towards the fixed module (1), the drive seat (341) pushes the anti-rotation rod (342) to extend into the cross-axis water conveying mechanism (33) to lock the cross-axis water conveying mechanism (33).

8. The three-color injection mold with a cross-axis water-cooling structure according to claim 7, characterized in that, The drive base (341) includes a base (3411) fixed on the fixed module (1), a movable base (3412) slidably connected to the base (3411), a pusher (3413) fixed on the moving module (2), and a guide post (3415) fixed on the moving module (2) and obliquely inserted on the movable base (3412). The anti-rotation rod (342) is fixed on the movable base (3412). The pusher (3413) and the movable base (3412) are provided with an inclined surface (3416) on opposite sides. The base (3411) and the movable base (3412) are provided with corresponding slots (3417). When the moving module (2) closes towards the fixed module (1), the pusher (3413) pushes the movable base (3412) to move towards the cross-axis water conveying mechanism (33).

9. The three-color injection mold with a cross-axis water-cooling structure according to claim 8, characterized in that, The base (3411) is provided with a limiting groove (3418), and the pusher (3413) is provided with a protrusion (3419) corresponding to the limiting groove (3418), so that when the moving module (2) closes towards the fixed module (1), the protrusion (3419) is engaged in the limiting groove (3418) to restrict the movement of the pusher (3413).

Images