A carousel and spindle shared type multi-component injection molding machine

Abstract

The present application relates to the technical field of multi-component injection molding machine, and discloses a rotary disc and rotary shaft shared type multi-component injection molding machine, which comprises a movable mold, a fixed mold, a rotary disc mechanism, a rotary shaft mechanism and a water distribution mechanism, wherein the rotary disc in the rotary disc mechanism is driven to rotate by a first driving assembly, the rotary shaft in the rotary shaft mechanism is driven to rotate by a second driving assembly, and the rotary shaft and the rotary disc are connected together by a water distribution block in the water distribution mechanism, the water distribution block is detachably connected with the rotary shaft, when the rotary disc function is used, the water distribution block is fixedly connected with the rotary disc, so that the first water channel in the rotary disc and the second water channel in the rotary shaft are communicated, and the water channel is kept unobstructed, and when the rotary shaft function is used, the water distribution block can be detached, and the rotary shaft is driven to rotate by the second driving assembly, that is, by the independent driving assembly, the rotary disc does not need to be driven to rotate when the rotary shaft is used, and the energy consumption can be reduced.

Description

Technical Field

[0001] This invention relates to the technical field of multi-component injection molding machines, and specifically to a multi-component injection molding machine that uses a shared turntable and shaft. Background Technology

[0002] Existing injection molding machines generally include rotary injection molding machines and spindle injection molding machines. Rotary injection molding machines primarily use a rotary platen with one or two molds mounted on it. The rotation of the platen drives the molds, changing the mold cavity. Combined with two injection units, this completes the injection molding of two-color products, mainly used to produce two-color products with distinct color boundaries. Spindle injection molding machines, on the other hand, use an auxiliary platen on a moving platen, and then mount a two-cavity mold on the auxiliary platen. A transmission device drives the spindle to rotate, thus rotating the mold core and changing the mold cavity. Combined with two injection units, this completes two-color injection molding. In products produced by this type of injection molding machine, one material penetrates and covers the surface of another material. However, both types of two-color injection molding machines can only mold specific two-color products. It is impossible to use a single two-color injection molding machine to produce products manufactured by both rotary and spindle injection molding machines. Therefore, rotary and spindle-type injection molding machines have emerged.

[0003] However, in the existing technology, the rotary table and rotary shaft shared injection molding machine has a complex structure, and the installation and maintenance are relatively troublesome. Moreover, the rotary shaft and rotary table share the same power component. Whether the rotary shaft or the rotary table is used, the other rotary table or rotary shaft will also participate in the movement, resulting in high energy consumption. At the same time, when switching from a rotary shaft injection molding machine to a rotary table injection molding machine, it is necessary to disassemble the auxiliary template, which is very troublesome. Summary of the Invention

[0004] This invention addresses the aforementioned problems and aims to provide a multi-component injection molding machine that combines a turntable and a shaft. This machine can produce both turntable and shaft-type injection molding products using a single injection molding machine. It features a simple structure, with independent power settings for the turntable and shaft. When using the shaft, the turntable does not need to move with it, thus reducing energy consumption.

[0005] To achieve the above objectives, the present invention provides a multi-component injection molding machine with a shared rotary table and shaft. The injection molding machine includes a moving mold and a fixed mold, the moving mold being located on one side of the fixed mold, and further includes:

[0006] A turntable mechanism includes a turntable assembly and a first drive assembly. The turntable assembly includes a turntable rotatably disposed on the side of the moving mold near the fixed mold. The turntable is provided with a first water channel. The first drive assembly is connected to the turntable and is used to drive the turntable to rotate.

[0007] A rotating shaft mechanism includes a rotating shaft assembly, a second drive assembly, and a center support assembly. The rotating shaft assembly includes a rotating shaft that is movably inserted through the middle of the moving mold. The rotating shaft is provided with a second water channel that can communicate with the first water channel. The second drive assembly is connected to the rotating shaft and is used to drive the rotating shaft to rotate. The center support assembly is used to drive the rotating shaft to move in the axial direction.

[0008] The water distribution mechanism includes a water distribution sleeve assembly and a locking assembly. The water distribution sleeve assembly is fixed to the outer side of the rotating shaft away from the fixed mold. The water distribution sleeve assembly is provided with a third water channel communicating with the second water channel. The locking assembly includes a water distribution block for connecting the rotating shaft and the turntable. The water distribution block is detachably inserted into the end of the rotating shaft near the turntable and is connected to the turntable so that the first water channel communicates with the second water channel.

[0009] A multi-component injection molding machine with a shared turntable and shaft, as described above, is characterized in that the turntable is provided with a first positioning hole, and the shaft is provided with a positioning groove communicating with the first positioning hole at one end near the turntable, and the water distribution block can be movably inserted into the positioning groove through the first positioning hole.

[0010] A multi-component injection molding machine with a shared turntable and shaft as described above is characterized in that the turntable assembly further includes a turntable shaft and a first needle roller bearing. The turntable shaft is rotatably mounted in the center hole of the moving mold through the first needle roller bearing. The turntable shaft is hollow, and the turntable is sleeved on one end of the turntable shaft.

[0011] According to the above-described multi-component injection molding machine with a shared turntable and shaft, the shaft assembly further includes a copper sleeve, a spline sleeve connected to the end of the shaft away from the fixed mold, and a support sleeve for supporting the spline sleeve. The copper sleeve is fixed in the inner hole of the turntable shaft, one end of the shaft is movably inserted into the copper sleeve, the spline sleeve is rotatably disposed in the support sleeve through a first tapered roller bearing, and the second drive assembly is connected to the spline sleeve.

[0012] According to the above-described multi-component injection molding machine with a shared turntable and shaft, the shaft assembly further includes a pressure cap, a spacer ring, and a round nut. Two first tapered roller bearings are symmetrically arranged in the support sleeve, and a spacer ring is provided between the outer rings of the two first tapered roller bearings. The pressure cap abuts against the outer side of the outer ring of the first tapered roller bearing, and the round nut is inserted into the inner ring of the two first tapered roller bearings.

[0013] According to the above-described multi-component injection molding machine with a shared turntable and shaft, the center line of the spline sleeve and the center line of the copper sleeve are located on the same straight line.

[0014] According to the above-described multi-component injection molding machine with a shared turntable and shaft, the second drive assembly includes a servo motor, a small pulley connected to the output shaft of the servo motor, a large pulley connected to the spline sleeve, and a synchronous belt. The servo motor is mounted on the upper side of the moving mold, one end of the synchronous belt is connected to the small pulley, and the other end of the synchronous belt is connected to the large pulley.

[0015] According to the above-described multi-component injection molding machine with a shared turntable and shaft, the second drive assembly further includes a base, a motor base, and a second needle roller bearing disposed in the motor base. The base is fixed to the upper side of the moving mold, and the base is provided with a sliding groove arranged in a vertical direction. The motor base is fixed on the base and can slide up and down along the sliding groove.

[0016] The output shaft of the servo motor passes through the second needle roller bearing and connects to the small pulley.

[0017] According to the above-described multi-component injection molding machine with a shared turntable and shaft, the center support assembly is disposed on the side of the moving mold away from the fixed mold. The center support assembly includes two center support cylinders fixed on the moving mold, two guide rods fixed on the moving mold, and two guide plates connected to the two center support cylinders. One end of each guide plate is connected to the piston rod of the center support cylinder, and the other end of the guide plate is connected to the end of the shaft away from the fixed mold through a second tapered roller bearing and a thrust bearing.

[0018] The extension and retraction direction of the piston rod of the hydraulic cylinder is in the same direction as the axis of the rotating shaft, and the guide plate is provided with a relief groove, which is arc-shaped.

[0019] According to the above-described multi-component injection molding machine with a shared turntable and shaft, the water distribution sleeve assembly includes an outer water distribution sleeve, a rotating core, an anti-rotation block, and an anti-rotation pin. The rotating core is fixed on the shaft, the third water channel is disposed on the rotating core and communicates with the second water channel, the outer water distribution sleeve is sleeved on the rotating core, and the outer water distribution sleeve is provided with a first water hole communicating with the third water channel, the anti-rotation block is fixed on the guide plate, and the anti-rotation pin is fixed on the anti-rotation block and can be inserted into the pin hole of the outer water distribution sleeve.

[0020] The present invention has the following beneficial effects:

[0021] 1. The turntable is driven by the first drive component, and the rotating shaft is driven by the second drive component, achieving independent driving. At the same time, when using the rotating shaft, the water distribution block can be pulled out. At this time, the rotating shaft is disconnected from the turntable, so the second drive component only needs to drive the rotating shaft to rotate, which can reduce energy consumption.

[0022] 2. When using the turntable, the water distribution block can be inserted into the rotating shaft to fix the turntable and the rotating shaft together. At this time, the first water channel on the turntable can be connected with the second water channel on the rotating shaft, which can ensure the normal water supply of the turntable.

[0023] 3. By rigidly positioning and installing the outer dome core of the support sleeve, the center lines of the spline sleeve and the copper sleeve can be kept on the same straight line, thereby ensuring the concentricity of the spline sleeve and the shaft, and making the spline sleeve drive the shaft to rotate more smoothly.

[0024] 4. The motor base can slide up and down along the groove of the base, thereby adjusting the distance between the small pulley and the large pulley, and thus adjusting the tension of the synchronous belt.

[0025] 5. An obstacle avoidance groove is provided on the guide plate. The obstacle avoidance groove is arc-shaped, which can reduce the area occupied by the guide plate and avoid interference with other parts on the moving mold. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the moving mold and fixed mold structure in an embodiment;

[0027] Figure 2 This is a schematic diagram of the back structure of the moving mold in the embodiment;

[0028] Figure 3 This is a cross-sectional view of the overall structure of the embodiment;

[0029] Figure 4 This is a schematic diagram of the assembly of the rotating shaft assembly and the large pulley in an embodiment;

[0030] Figure 5 This is a schematic diagram of the servo motor mounting structure in an embodiment;

[0031] Figure 6 This is a schematic diagram of the small pulley assembly structure in an embodiment;

[0032] Figure 7 This is a schematic diagram of the assembly of the middle support component in the embodiment;

[0033] Figure 8 This is an assembly diagram of the middle support component, the water distribution jacket component, and the rotating shaft in the embodiment;

[0034] Figure 9 This is a structural diagram of the external water distribution unit in an embodiment.

[0035] In the picture:

[0036] 1. Moving mold;

[0037] 2. Mold setting;

[0038] 3. Turntable mechanism; 31. Turntable assembly; 311. Turntable; 312. Turntable shaft; 313. First needle roller bearing; 32. First drive assembly;

[0039] 4. Rotating shaft mechanism; 41. Rotating shaft assembly; 411. Rotating shaft; 412. Copper sleeve; 413. Spline sleeve; 414. Support sleeve; 415. First tapered roller bearing; 416. Pressure cap; 417. Spacer ring; 418. Round nut; 42. Second drive assembly; 421. Servo motor; 422. Small pulley; 423. Large pulley; 424. Synchronous belt; 425. Base; 426. Motor base; 427. Second needle roller bearing; 43. Center support assembly; 431. Center support cylinder; 432. Guide rod; 433. Guide plate; 434. Second tapered roller bearing; 435. Thrust bearing;

[0040] 5. Water distribution mechanism; 51. Water distribution jacket assembly; 511. Outer water distribution jacket; 512. Rotating core; 513. Anti-rotation block; 514. Anti-rotation pin; 52. Water distribution block. Detailed Implementation

[0041] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the present invention. However, the invention is not limited to these embodiments.

[0042] like Figure 1-9 As shown, a multi-component injection molding machine with a shared turntable and shaft includes a moving mold 1, a fixed mold 2, a turntable mechanism 3, a shaft mechanism 4, and a water distribution mechanism 5.

[0043] The turntable mechanism 3 includes a turntable assembly 31 and a first drive assembly 32. The turntable assembly 31 includes a turntable 311 rotatably mounted on the side of the moving mold 1 near the fixed mold 2. A first water channel is provided on the turntable 311. The first drive assembly 32 is connected to the turntable 311 and is used to drive the turntable 311 to rotate. The rotating shaft mechanism 4 includes a rotating shaft assembly 41 and a second drive assembly 42. The rotating shaft assembly 41 includes a rotating shaft 411 passing through the middle of the moving mold 1. The second drive assembly 42 is connected to the rotating shaft 411 and is used to drive the rotating shaft 411 to rotate. The drive shaft 411 rotates, and a second water channel communicating with the first water channel is provided on the shaft 411. The water distribution mechanism 5 includes a water distribution sleeve assembly 51 and a locking assembly. The water distribution sleeve assembly 51 is fixed on the outer side of the shaft 411 away from the fixed mold 2. The water distribution sleeve assembly 51 has a third water channel communicating with the second water channel. The locking assembly includes a water distribution block for connecting the shaft 411 and the turntable 311. The water distribution block is detachably inserted into the end of the shaft 411 near the turntable 311 and connected to the turntable 311. The turntable 311 and the rotating shaft 411 are fixedly connected together, allowing the first water channel to communicate with the second water channel. Therefore, in this embodiment, when using the turntable 311, due to the internal water supply mode, the turntable 311 must rotate synchronously with the rotating shaft 411 to ensure normal water supply. Thus, when using the turntable 311, a water distribution block is inserted between the turntable 311 and the rotating shaft 411, fixing the turntable 311 and the rotating shaft 411 together. The first drive assembly 32 drives the turntable 311 to rotate. When in motion, the turntable 311 drives the rotating shaft 411 to rotate together to ensure that the first water channel and the second water channel are connected. Of course, when using the rotating shaft 411, since the water in the rotating shaft 411 does not need to pass through the turntable 311, the turntable 311 does not need to move. Therefore, when using the rotating shaft 411, the water distribution block is removed, and the second drive component 42 only needs to drive the rotating shaft 411 to rotate. Through the independent drive of the turntable 311 and the rotating shaft 411, energy can be saved and the operating cost can be reduced during the use of the rotating shaft 411.

[0044] In this embodiment, in order to achieve a fixed connection between the turntable 311 and the rotating shaft 411, a first positioning hole is provided on the turntable 311, and a positioning groove communicating with the first positioning hole is provided on one end of the rotating shaft 411 near the turntable 311. The water distribution block can be movably inserted into the positioning groove through the first positioning hole. When the turntable 311 rotates, the rotation drives the water distribution block to rotate together, and the water distribution block drives the rotating shaft 411 to rotate together, so as to achieve synchronous rotation of the rotating shaft 411 and the turntable 311.

[0045] Specifically, the moving mold 1 is located on one side of the fixed mold 2. When the mold is closed, the moving mold 1 moves towards the side closer to the fixed mold 2.

[0046] Specifically, the turntable assembly 31 also includes a turntable shaft 312 and a first needle roller bearing 313. The turntable shaft 312 is rotatably mounted in the center hole of the moving mold 1 through the first needle roller bearing 313, that is, the outer ring of the first needle roller bearing 313 is connected to the inner wall of the center hole of the moving mold 1. The turntable shaft 312 passes through the inner ring of the first needle roller bearing 313 to realize the rotation of the turntable shaft 312. At the same time, the turntable 311 is sleeved on the end of the turntable shaft 312 near the fixed mold 2. The turntable shaft 312 provides rotational support for the turntable 311. When the first drive assembly 32 drives the turntable 311 to rotate, the turntable shaft 312 rotates accordingly. The hollow design of the turntable shaft 312 facilitates the installation of the rotating shaft 411.

[0047] Specifically, the rotating shaft assembly 41 also includes a copper sleeve 412, a splined sleeve 413, a support sleeve 414, a pressure cap 416, and a spacer ring 417. The copper sleeve 412 is fixed inside the inner hole of the turntable shaft 312, and one end of the rotating shaft 411 is movably inserted into the copper sleeve 412, which provides support for the rotating shaft 411. The inner spline on the splined sleeve 413 is keyed to the outer spline on the rotating shaft 411 to achieve the connection between the splined sleeve 413 and the rotating shaft 411. At the same time, the support sleeve 414 and the spacer ring 417 located between the support sleeve 414 and the splined sleeve 413 are used to connect the two shafts. The first tapered roller bearing 415 positions and supports the spline sleeve 413. The support sleeve 414 provides rigid positioning, which ensures the coaxiality of the spline sleeve 413 and the copper sleeve 412. Therefore, in this embodiment, the center line of the spline sleeve 413 and the center line of the copper sleeve 412 can be adjusted to be on the same straight line, thereby ensuring that both ends of the rotating shaft 411 are on the same horizontal line and preventing the rotating shaft 411 from tilting. The second drive assembly 42 is connected to the spline sleeve 413 and drives the spline sleeve 413 to rotate, thereby realizing the rotation of the rotating shaft 411.

[0048] To enable the spline sleeve 413 to rotate relative to the support sleeve 414 but not to move axially relative to the support sleeve 414, two symmetrically arranged first tapered roller bearings 415 are provided inside the support sleeve 414. The spline sleeve 413 is rotatably connected to the support sleeve 414 through the two first tapered roller bearings 415, and a spacer ring 417 is provided between the outer rings of the two first tapered roller bearings 415. The pressure cap 416 abuts against the outer side of the first tapered roller bearings 415 to prevent the first tapered roller bearings 415 from moving outward. The round nut 418 is inserted into the inner ring of the two tapered roller bearings to ensure that the two first tapered roller bearings 415 are connected together so that neither of them can move outward, thus restricting the axial movement of the first tapered roller bearings 415, and thus restricting the axial movement of the spline sleeve 413.

[0049] Specifically, the second drive assembly 42 includes a servo motor 421, a small pulley 422, a large pulley 423, a synchronous belt 424, a base 425, a motor mount 426, and a second needle roller bearing 427 disposed within the motor mount 426. The base 425 is fixed to the upper side of the moving mold 1, and the servo motor 421 is fixed to the base 425 via the motor mount 426. Therefore, the servo motor 421 is also mounted on the upper side of the moving mold 1. The small pulley 422 is fixed to the output shaft of the servo motor 421, the large pulley 423 is connected to the spline sleeve 413, and the synchronous belt 424 is used to connect the small pulley 422 and the large pulley 423. The servo motor 421 drives the small pulley 422 through its output shaft. The servo motor 421 rotates, simultaneously driving the large pulley 423 to rotate via the synchronous belt 424. The large pulley 423 drives the rotating shaft 411 to rotate via the spline sleeve 413. To adjust the tension of the synchronous belt 424, a vertically arranged groove is provided on the base 425. The motor base 426 can slide up and down along the groove, thereby adjusting the distance between the small pulley 422 and the large pulley 423, and thus adjusting the tension of the synchronous belt 424. The output shaft of the servo motor 421 passes through the second needle roller bearing 427, which provides support for the output shaft, preventing the radial force from the small pulley 422 from acting directly on the output shaft and thus avoiding damage to the output shaft.

[0050] Specifically, the center support assembly 43 is located on the side of the moving mold 1 away from the fixed mold 2. The center support assembly 43 includes two center support cylinders 431 fixed on the moving mold 1, two guide rods 432 fixed on the moving mold 1, and two guide plates 433 connected to the two center support cylinders 431. One end of each guide plate 433 is connected to the piston rod of the center support cylinder 431, and the other end of the guide plate 433 is connected to the end of the rotating shaft 411 away from the fixed mold 2 through a second tapered roller bearing 434 and a thrust bearing 435. When cylinder 431 moves, the piston rod of the middle support cylinder 431 extends and retracts, which drives the guide plate 433 to move along the direction of piston rod movement. Then, the guide plate 433 drives the rotating shaft 411 to move along the direction of piston rod movement. The guide rod 432 supports the guide plate 433 and also guides it. Therefore, the arrangement direction of the guide rod 432 is required to be in the same direction as the extension and retraction direction of the piston rod and the axial direction of the rotating shaft 411, so as to facilitate driving the rotating shaft 411 to move along its axial direction.

[0051] In this embodiment, one end of each of the two guide plates 433 is connected to the rotating shaft 411 via a second tapered roller bearing 434 and a thrust bearing 435, axially connecting the guide plates 433 and the rotating shaft 411. The two guide plates 433 are symmetrical about the center of the rotating shaft 411, and the rotating shaft 411 is subjected to force on both symmetrical sides simultaneously, which can prevent uneven force on the rotating shaft 411 and prevent the rotating shaft 411 from breaking. At the same time, in order to avoid interference between the guide plates 433 and other components on the moving mold 1, a relief groove is provided on the guide plates 433. The relief groove is arc-shaped, which can minimize the area occupied by the guide plates 433. During the operation of the guide plates 433, the relief groove can play a role in avoiding interference with other components.

[0052] Specifically, the water distribution jacket assembly 51 includes an outer water distribution jacket 511, a rotating core 512, an anti-rotation block 513, and an anti-rotation pin 514. The rotating core 512 is fixed on the rotating shaft 411. The third water channel is set on the rotating core 512 and communicates with the second water channel. The outer water distribution jacket 511 is fitted on the rotating core 512, and the outer water distribution jacket 511 is provided with a first water hole communicating with the third water channel. The anti-rotation block 513 is fixed on the guide plate 433, and the anti-rotation pin 514 is fixed on the anti-rotation block 513 and can be inserted into the pin hole of the outer water distribution jacket 511. The rotating core 512 rotates together with the rotating shaft 411, while the movement of the outer water distribution jacket 511 is restricted to prevent the pipes connected to the outer water distribution jacket 511 from becoming disordered due to rotation.

[0053] Of course, the injection molding machine should also be equipped with an ejection mechanism, which is located on the side of the moving mold 1 away from the fixed mold 2, and is used to eject the molded product.

[0054] The technical solution of the present invention has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of the present invention. The specific embodiments described herein are merely illustrative examples of the spirit of the present invention. Those skilled in the art to which this invention pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0055] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0056] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A multi-component injection molding machine with a shared rotary table and shaft, the injection molding machine comprising a moving mold (1) and a fixed mold (2), the moving mold (1) being located on one side of the fixed mold (2), characterized in that, Also includes: The turntable mechanism (3) includes a turntable assembly (31) and a first drive assembly (32). The turntable assembly (31) includes a turntable (311) rotatably disposed on the side of the moving mold (1) near the fixed mold (2). The turntable (311) is provided with a first water channel. The first drive assembly (32) is connected to the turntable (311) and is used to drive the turntable (311) to rotate. The rotating shaft mechanism (4) includes a rotating shaft assembly (41), a second drive assembly (42), and a center support assembly (43). The rotating shaft assembly (41) includes a rotating shaft (411) that is movably inserted through the middle of the moving mold (1). The rotating shaft (411) is provided with a second water channel that can communicate with the first water channel. The second drive assembly (42) is connected to the rotating shaft (411) and is used to drive the rotating shaft (411) to rotate. The center support assembly (43) is used to drive the rotating shaft (411) to move in the axial direction. The water distribution mechanism (5) includes a water distribution sleeve assembly (51) and a locking assembly. The water distribution sleeve assembly (51) is fixed on the outer side of the rotating shaft (411) away from the fixed mold (2). The water distribution sleeve assembly (51) is provided with a third water channel communicating with the second water channel. The locking assembly includes a water distribution block (52) for connecting the rotating shaft (411) and the turntable (311). The water distribution block (52) is detachably inserted into the end of the rotating shaft (411) near the turntable (311) and connected to the turntable (311) so that the first water channel communicates with the second water channel.

2. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 1, characterized in that, The turntable (311) is provided with a first positioning hole, and the rotating shaft (411) is provided with a positioning groove communicating with the first positioning hole at one end near the turntable (311). The water distribution block (52) can be movably inserted into the positioning groove through the first positioning hole.

3. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 1, characterized in that, The turntable assembly (31) also includes a turntable shaft (312) and a first needle roller bearing (313). The turntable shaft (312) is rotatably mounted in the center hole of the moving mold (1) through the first needle roller bearing (313). The turntable shaft (312) is hollow, and the turntable (311) is sleeved on one end of the turntable shaft (312).

4. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 3, characterized in that, The rotating shaft assembly (41) further includes a copper sleeve (412), a spline sleeve (413) connected to the end of the rotating shaft (411) away from the fixed mold (2), and a support sleeve (414) for supporting the spline sleeve (413). The copper sleeve (412) is fixed in the inner hole of the turntable shaft (312). One end of the rotating shaft (411) is movably inserted into the copper sleeve (412). The spline sleeve (413) is rotatably disposed in the support sleeve (414) through a first tapered roller bearing (415). The second drive assembly (42) is connected to the spline sleeve (413).

5. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 4, characterized in that, The rotating shaft assembly (41) also includes a pressure cap (416), a spacer ring (417), and a round nut (418). Two first tapered roller bearings (415) are symmetrically arranged inside the support sleeve (414). A spacer ring (417) is provided between the outer rings of the two first tapered roller bearings (415). The pressure cap (416) abuts against the outer side of the outer ring of the first tapered roller bearing (415). The round nut (418) is inserted into the inner ring of the two first tapered roller bearings (415).

6. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 4, characterized in that, The centerline of the spline sleeve (413) and the centerline of the copper sleeve (412) are on the same straight line.

7. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 4, characterized in that, The second drive assembly (42) includes a servo motor (421), a small pulley (422) connected to the output shaft of the servo motor (421), a large pulley (423) connected to the spline sleeve (413), and a synchronous belt (424). The servo motor (421) is mounted on the upper side of the moving mold (1). One end of the synchronous belt (424) is connected to the small pulley (422), and the other end of the synchronous belt (424) is connected to the large pulley (423).

8. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 7, characterized in that, The second drive assembly (42) further includes a base (425), a motor base (426), and a second needle roller bearing (427) disposed in the motor base (426). The base (425) is fixed to the upper side of the moving mold (1), and the base (425) is provided with a sliding groove arranged in the vertical direction. The motor base (426) is fixed on the base (425) and can slide up and down along the sliding groove. The output shaft of the servo motor (421) passes through the second needle roller bearing (427) and connects to the small pulley (422).

9. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 1, characterized in that, The center support assembly (43) is disposed on the side of the moving mold (1) away from the fixed mold (2). The center support assembly (43) includes two center support cylinders (431) fixed on the moving mold (1), two guide rods (432) fixed on the moving mold (1), and two guide plates (433) connected to the two center support cylinders (431). One end of each guide plate (433) is connected to the piston rod of the center support cylinder (431), and the other end of the guide plate (433) is connected to the end of the rotating shaft (411) away from the fixed mold (2) through a second tapered roller bearing (434) and a thrust bearing (435). The extension and retraction direction of the piston rod of the central support cylinder (431) is in the same direction as the axial direction of the rotating shaft (411), and the guide plate (433) is provided with a relief groove, which is arc-shaped.

10. A multi-component injection molding machine with a shared rotary table and shaft as described in claim 9, characterized in that, The water distribution sleeve assembly (51) includes an outer water distribution sleeve (511), a rotating core (512), an anti-rotation block (513), and an anti-rotation pin (514). The rotating core (512) is fixed on the rotating shaft (411). The third water channel is arranged on the rotating core (512) and communicates with the second water channel. The outer water distribution sleeve (511) is sleeved on the rotating core (512), and the outer water distribution sleeve (511) is provided with a first water hole communicating with the third water channel. The anti-rotation block (513) is fixed on the guide plate (433), and the anti-rotation pin (514) is fixed on the anti-rotation block (513) and can be inserted into the pin hole of the outer water distribution sleeve (511).

Images