Impeller pin injection molding device

Abstract

The utility model discloses an impeller pin injection molding device which comprises a rack, and a pin conveying device, a pin transfer manipulator, an impeller injection molding device and a water gap cutting device which are all arranged on the rack, the pin transfer manipulator is arranged between the pin conveying device and the impeller injection molding device, and the water gap cutting device is adjacent to the pin conveying device. The contact pin conveyed out by the contact pin conveying device is transferred into the impeller injection molding device through the contact pin transferring manipulator, the impeller injection molding device injects an impeller onto the contact pin, and then the contact pin transferring manipulator grabs a finished product subjected to injection molding and conveys the finished product to the water gap cutting device for water gap cutting. According to the utility model, automatic operation of pin conveying, injection molding and water gap cutting can be realized, the production efficiency is improved, the slag discharging frame is convenient for timely cleaning waste slag, and the production environment and normal operation of equipment are guaranteed.

Description

Technical Field

[0001] This utility model relates to an injection molding equipment, and more specifically to an impeller pin injection molding device. Background Technology

[0002] In the field of mechanical engineering, impellers, as core components for power transmission and energy conversion, are widely used in equipment such as pumps, fans, and compressors. Their assembly quality directly affects the operating efficiency, stability, and service life of the equipment. Tungsten carbide rods, due to their excellent properties such as high hardness, wear resistance, and corrosion resistance, are increasingly being used in the manufacture of high-performance impellers, serving as pins at the impeller center.

[0003] However, the assembly of tungsten carbide rod impellers faces many challenges. In the existing assembly process, the impeller is first injection molded using injection molding equipment, and then tungsten carbide rods are selected and manually hammered into the impeller. However, since the existing tungsten carbide rods are generally quite thin, there are difficulties in the assembly process during manual hammering. If a dedicated assembly equipment is used, there will also be some problems with alignment during the assembly process, resulting in low assembly efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an impeller pin injection molding device that can effectively improve the impeller production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an impeller pin injection molding device, comprising a frame and a pin conveying device, a pin transfer robot, an impeller injection molding device, and a sprue cutting device, all mounted on the frame. The pin transfer robot is positioned between the pin conveying device and the impeller injection molding device, and the sprue cutting device is adjacent to the pin conveying device. The pins delivered by the pin conveying device are transferred to the impeller injection molding device by the pin transfer robot, and then the impeller injection molding device injects the impeller onto the pins. Finally, the pin transfer robot picks up the injection-molded finished product and conveys it to the sprue cutting device for cutting.

[0006] As a further improvement of this utility model patent, the needle feeding device includes a needle vibratory feeder, a feeding base, and a needle pushing block. A needle feeding groove is formed on the upper side of the feeding base. A needle placement block is fixed to the opening at one end of the groove, and the other end forms a gripping end for the needle transfer robot to grasp. The needle vibratory feeder is connected to the needle placement block via a pipe to feed the needles through the pipe to the needle placement block. The needle placement block vertically places the needles onto the needle feeding groove. The needle pushing block is slidably disposed within the needle feeding groove to push the needles within the needle placement block to the gripping end.

[0007] As a further improvement of this utility model patent, the needle release block is provided with a lower needle hole and a guide needle groove. The diameter of the lower needle hole and the width of the guide needle groove are adapted to the diameter of the needle. One end of the guide needle groove extends to the gripping end. The upper end of the lower needle hole is connected to the needle vibrating plate through a pipe, and the lower end is connected to the guide needle groove.

[0008] As a further improvement of this utility model patent, the pin transfer robot includes a translation slide rail, a translation base, a pin gripper, and a finished product gripper. One end of the translation slide rail extends above the pin conveying device and the sprue cutting device, and the other end extends to the impeller injection molding device. The translation base is slidably mounted on the translation rail. The pin gripper and the finished product gripper are mounted alternately on the translation base, so that the pin transfer robot follows the following actions: The translation base moves above the pin conveying device via the translation rail, the pin gripper grips the pin, and then moves to above the impeller injection molding device. The finished product gripper grips the finished product, and then the pin gripper places the pin. Then the translation base moves above the sprue device via the translation rail, the finished product gripper places the finished product into the sprue of the sprue device, and then the finished product gripper holds onto the waste residue. Then the translation base moves above the pin conveying device via the translation rail, and the above steps are repeated. If the finished product gripper holds waste residue, the waste residue is discarded during the process of moving from the pin conveying device to the impeller injection molding device.

[0009] As a further improvement of this utility model patent, the pin gripper includes a pin base plate, a pin push rod, a pin gripping column, and a pin detection head. The pin detection head is fixedly mounted on the translation base plate to detect pins. The pin base plate is movably mounted on the translation base. The pin gripping column is fixedly mounted on the pin base plate. The pin push rod is movably mounted on the pin base plate and is positioned above the pin gripping column. The pin gripping column has a pin clamping channel. After the pin detection head detects a pin, the pin base plate descends, causing the pin to enter the pin clamping channel and be gripped by it. The pin push rod is inserted into the pin clamping channel, and the pin is pushed out of the pin clamping channel and placed into the impeller injection molding device.

[0010] As a further improvement of this utility model patent, the finished product gripper includes a finished product base plate, a finished product clamping claw, and a downward-pushing cylinder. The finished product base plate is mounted on a sliding base in a height-adjustable manner, the finished product clamping claw is fixed on the finished product base plate, the cylinder body of the downward-pushing cylinder is fixed to the side of the finished product clamping claw, and the push rod is set downward to extend downward to hold the water inlet, so as to position the water inlet during the water inlet cutting process.

[0011] As a further improvement of this utility model patent, the impeller injection molding device includes an injection molding mechanism, a rotating platform, a guiding alignment mechanism, and several injection molding fixtures. The several injection molding fixtures are fixedly mounted on the rotating platform and distributed circumferentially on the platform. The rotation of the rotating platform transports the injection molding fixtures to a position below the injection molding mechanism or below the pin transfer robot. The guiding alignment mechanism is mounted on the frame near the bottom of the pin transfer robot to guide the pins of the pin transfer robot into the injection molding fixtures.

[0012] As a further improvement of this utility model patent, the guiding alignment mechanism includes an alignment slide rail, an alignment base, and an alignment plate that is liftable and mounted on the alignment base. The alignment base is slidably mounted on the alignment slide rail to move the alignment plate above the injection molding fixture, or to move it out of the injection molding fixture. The alignment plate has an alignment hole and a linear bushing. The injection molding fixture has a linear shaft. When the alignment plate is above the injection molding fixture, the alignment plate descends, causing the linear shaft to pass into the linear bushing, and the alignment hole aligns with the pin position on the injection molding fixture.

[0013] As a further improvement of this utility model patent, the sprue cutting device includes a sprue cutting base, a left cutter, and a right cutter. The upper side of the sprue cutting base is provided with a receiving groove for accommodating the finished impeller. The left cutter and the right cutter are slidably arranged on the left and right sides of the receiving groove to cut off the sprue on the finished impeller by sliding relative to each other.

[0014] As a further improvement of this utility model patent, the lower end of the water inlet base is provided with a finished pipe, and the upper end of the finished pipe is connected to the receiving groove.

[0015] The beneficial effects of this utility model patent are:

[0016] Compared to the traditional tungsten carbide rod impeller assembly method in the background art, this utility model has significant advantages. The traditional method involves manually hammering the tungsten carbide rod into the impeller, which presents assembly difficulties due to the thinness of the rod. Furthermore, using specialized assembly equipment presents alignment challenges, resulting in low assembly efficiency. In contrast, the impeller pin injection molding device of this utility model automates the pin delivery, injection molding, and nozzle cutting process. By placing the pin first and then injecting the impeller, no additional subsequent assembly process is required, effectively solving many problems of the traditional assembly method, improving production efficiency, ensuring product quality, and enhancing the overall level of impeller assembly. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the impeller pin injection molding device of this utility model;

[0018] Figure 2 for Figure 1 Overall structural diagram of the center pin conveying device;

[0019] Figure 3 for Figure 2 Internal structure diagram of the central needle block;

[0020] Figure 4 for Figure 1 Overall structural diagram of the pin transfer robot;

[0021] Figure 5 for Figure 4 Overall structural diagram of the centrally inserted pin gripper;

[0022] Figure 6 for Figure 4 Overall structural diagram of the mid-finished product gripper;

[0023] Figure 7 for Figure 1 Overall structural diagram of the impeller injection molding unit;

[0024] Figure 8 for Figure 6 Overall structural diagram of the central alignment mechanism;

[0025] Figure 9 for Figure 1 Overall structural diagram of the central cut-out nozzle device. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0027] Reference Figure 1 As shown, the impeller pin injection molding device of this embodiment includes a frame 1 and pin conveying device 2, pin transfer robot 3, impeller injection molding device 4, and sprue cutting device 5, all mounted on the frame 1. The pin transfer robot 3 is located between the pin conveying device 2 and the impeller injection molding device 4, and the sprue cutting device 5 is adjacent to the pin conveying device 2. The pins sent out by the pin conveying device 2 are transferred to the impeller injection molding device 4 by the pin transfer robot 3. Then, the impeller injection molding device 4 injects the impeller onto the pins. After that, the pin transfer robot 3 picks up the injection-molded finished product and conveys it to the sprue cutting device 5 for sprue cutting. In the impeller production process using the pin injection molding machine of this embodiment, the pin transfer robot 3 first moves to the pin conveying device 2 to pick up the pins, and then places them into the impeller injection molding device 4. The impeller is then injection molded from the pins using the impeller injection molding device 4. The injection-molded impeller is then processed by the sprue cutting device 5. The processed waste is then removed by the slag discharge frame 6 during the conveying of new pins. This achieves an automated impeller pin injection molding process, which is more efficient than the existing technology that uses the method of first injection molding the impeller and then assembling it.

[0028] Furthermore, refer to Figure 2 As shown, the needle feeding device 2 includes a needle vibratory feeder 21, a feeding base 22, and a needle pushing block 23. A needle feeding groove 221 is formed on the upper side of the feeding base 22. A needle placement block 222 is fixed to one end of the groove, and the other end forms a gripping end for the needle transfer robot 3 to grasp. The needle vibratory feeder 21 is connected to the needle placement block 222 via a pipe to feed the needles through the pipe to the needle placement block 222. The needle placement block 222 vertically places the needles onto the needle feeding groove 221. The needle pushing block 23 is slidably disposed within the needle feeding groove 221 to push the needles within the needle placement block 222 to the gripping end. This structure achieves automatic needle feeding, improving the efficiency and accuracy of needle feeding compared to the manual selection of needles in the prior art.

[0029] Furthermore, refer to Figure 3 As shown, the needle placement block 222 has a lower needle hole 2221 and a guide needle groove 2222. The diameter of the lower needle hole 2221 and the width of the guide needle groove 2222 are adapted to the diameter of the needle. One end of the guide needle groove 2222 extends to the gripping end. The upper end of the lower needle hole 2221 is connected to the needle vibrating plate 21 through a pipe, and the lower end is connected to the guide needle groove 2222. This design can better guide the needle delivery, ensure the stability of the needle delivery, and solve the problem of difficulty in aligning the needle during manual assembly in the background art. During the delivery process, the needle first enters the lower needle hole 2221. In this embodiment, the pusher block 23 also has a through hole with the same diameter as the lower needle hole 2221. When the needle falls from the lower needle hole 2221, it will fall into the through hole and then move to the gripping end through the through hole to realize the delivery of the needle.

[0030] Furthermore, refer to Figure 4As shown, the pin transfer robot 3 includes a translation slide rail 31, a translation base 32, a pin gripper 33, and a finished product gripper 34. One end of the translation slide rail 31 extends above the pin conveying device 2 and the sprue cutting device 5, and the other end extends to the impeller injection molding device 4. The translation base 32 is slidably mounted on the translation slide rail 31, and the pin gripper 33 and the finished product gripper 34 are mounted on the translation base 32 at intervals. The needle transfer robot 3 follows these steps: the translation base 32 moves above the needle conveying device 2 via the translation slide rail 31; the needle gripper 33 grips the needle; then it moves to above the impeller injection molding device 4; the finished product gripper 34 grips the finished product; the needle gripper 33 places the needle in; then the translation base 32 moves above the sprue cutting device 5 via the translation slide rail 31; the finished product gripper 34 places the finished product into the sprue cutting device 5; the finished product gripper 34 holds onto the waste residue; then the translation base 32 moves above the needle conveying device 2 via the translation slide rail 31, and the above steps are repeated. If the finished product gripper 34 holds waste residue, the waste residue is discarded during the movement from the needle conveying device 2 to the impeller injection molding device 4. With the above structure, the needle can be re-grabbed when the sprue is cut, and then enter the next production process. Slag removal can be performed during the process of entering the next injection molding process, making the whole process more convenient, faster and smoother. In this embodiment, slag removal can be achieved by setting a slag removal port between the needle conveying device 2 and the impeller injection molding device 4.

[0031] Furthermore, refer to Figure 5 As shown, the pin gripper 33 includes a pin base plate 331, a pin push rod 332, a pin gripping post 333, and a pin detection head 334. The pin detection head 334 is fixedly mounted on the translation base 32 to detect pins. The pin base plate 331 is flexibly mounted on the translation base 32. The pin gripping post 333 is fixed on the pin base plate 331. The pin push rod 332 is flexibly mounted on the pin base plate 331 and positioned above the pin gripping post 333. The pin gripping post 333 has a pin-clamping channel. After the pin detection head 334 detects a pin, the pin base plate 331 descends, the pin enters the pin-clamping channel and is gripped. The pin push rod 332 inserts into the pin-clamping channel and pushes the pin out, placing it into the impeller injection molding device 4. Real-time monitoring by the pin detection head 334 and precise pushing by the push rod ensure accurate pin gripping and placement, avoiding deviations from manual operation and improving assembly accuracy. During the process of picking up the insert pin, after the insert pin detection head 334 detects the insert pin, the insert pin base plate 331 descends, causing the insert pin to enter the pin clamping channel. The pin clamping channel of the insert pin picking column 333 clamps the insert pin. After it moves into place, the insert pin push rod 332 descends to push the insert pin out and place it onto the injection fixture 41 of the impeller injection molding device 4.

[0032] Furthermore, refer to Figure 6 As shown, the finished product gripper 34 includes a finished product base plate 341, a finished product clamping jaw 342, and a downward-pushing cylinder 343. The finished product base plate 341 is liftably mounted on the translation base 32. The finished product clamping jaw 342 is fixed on the finished product base plate 341. The cylinder body of the downward-pushing cylinder 343 is fixed to the side of the finished product clamping jaw 342, with the push rod facing downward to extend downward and hold the sprue in place, thus positioning the sprue during the sprue cutting process. The automated slag removal design eliminates the need for manual cleaning, reduces downtime, and improves production continuity. The finished product clamping jaw 342 stably grips the finished product, ensuring reliable transfer. In this embodiment, the finished product gripper 34 only grips the sprue of the finished product. Thus, during the sprue cutting process, the gripper 34 maintains the gripping state and further positions the sprue during the cutting process, ensuring the reliability of the sprue cutting. In addition, in this embodiment, a photoelectric sensor is also installed on the side wall of the finished product clamping jaw 342 to detect whether a sprue has been gripped.

[0033] Furthermore, refer to Figure 7 As shown, the impeller injection molding device 4 includes an injection molding mechanism (a conventional injection head structure, not shown in the figure), a rotary platform 42, a guiding alignment mechanism 43, and several injection molding fixtures 41. The injection molding fixtures 41 are fixed on the rotary platform 42 and arranged in a circular pattern. Rotation of the rotary platform 42 can transport the injection molding fixtures 41 to below the injection molding mechanism or below the pin transfer robot 3. The guiding alignment mechanism 43 is installed on the frame 1 near the bottom of the pin transfer robot 3, guiding the pins of the pin transfer robot 3 to insert into the injection molding fixtures 41. The rotary platform 42, in conjunction with the circumferentially distributed injection molding fixtures 41, enables multi-station continuous injection molding. The guiding alignment mechanism 43 solves the problem of difficult alignment between the pins and the impeller in the prior art, improving assembly success rate and efficiency.

[0034] Furthermore, refer to Figure 8 As shown, the alignment mechanism 43 includes an alignment slide rail 431, an alignment base 432, and an alignment plate 433 that can be lifted and lowered on the alignment base 432. The alignment base 432 is slidably mounted on the alignment slide rail 431, causing the alignment plate 433 to slide above or out of the injection molding fixture 41. The alignment plate 433 has an alignment hole and a linear bushing. The injection molding fixture 41 has a linear shaft. When the alignment plate 433 is above the injection molding fixture 41, the alignment plate 433 descends, the linear shaft passes into the linear bushing, and the alignment hole aligns with the position of the pin on the injection molding fixture 41. Through the mechanical structure of sliding and lifting of the slide rail, the alignment plate 433 and the injection molding fixture 41 are precisely aligned, ensuring the accurate insertion position of the pin. Compared with the method of using sensors for alignment, the alignment process using the cooperation of the linear shaft and the linear bushing is more convenient and faster, and the error is smaller. In this embodiment, the alignment plate 433 is driven by a cylinder.

[0035] Furthermore, refer to Figure 9 As shown, the sprue-cutting device 5 includes a sprue-cutting base 51, a left cutter 52, and a right cutter 53. The upper side of the sprue-cutting base 51 has a receiving groove for accommodating the finished impeller. The left cutter 52 and right cutter 53 are slidably positioned on the left and right sides of the receiving groove, allowing them to slide relative to each other and cut the sprue nozzles on the finished impeller. A finished product pipe 54 is located at the lower end of the sprue-cutting base 51, and the upper end of the finished product pipe 54 is connected to the receiving groove. Mechanized sprue cutting replaces manual operation, providing precise and efficient cutting. The receiving groove fixes the position of the finished impeller, and the finished product pipe facilitates finished product collection, improving subsequent processing efficiency. When the finished impeller is placed in the receiving groove, the left cutter 52 and right cutter 53 slide relative to each other and cut the sprue nozzles. The finished product is discharged and collected through the finished product pipe 54, while the sprue residue is gripped and removed by the finished product gripper 34.

[0036] In summary, this solution, through the automated linkage of the pin conveying device 2, the pin transfer robot 3, the impeller injection molding device 4, and the sprue trimming device 5, constructs a complete production line from pin conveying and injection molding to sprue trimming. Compared with the manual hammering assembly method in the prior art, this significantly improves assembly efficiency and accuracy. The slag discharge frame 6, in conjunction with the lower cylinder 343 of the finished product gripper 34, achieves automatic slag removal, keeping the equipment clean. The mechanical alignment structure of the guiding alignment mechanism 43 and the injection molding fixture 41 solves the problem of difficult alignment between the pin and the impeller during assembly. The multi-station design of the rotating platform 42 and the double-claw cyclic operation of the pin transfer robot 3 further improve production efficiency. The entire system, through the coordinated operation of its components, effectively overcomes the problem of low efficiency in the existing tungsten steel rod impeller assembly process.

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An impeller pin injection molding device, characterized in that: The device includes a frame (1) and a pin conveying device (2), a pin transfer robot (3), an impeller injection molding device (4), and a sprue cutting device (5) all mounted on the frame (1). The pin transfer robot (3) is located between the pin conveying device (2) and the impeller injection molding device (4). The sprue cutting device (5) is adjacent to the pin conveying device (2). The pins sent out by the pin conveying device (2) are transferred to the impeller injection molding device (4) by the pin transfer robot (3). Then, the impeller is injected onto the pin by the impeller injection molding device (4). After that, the pin transfer robot (3) grabs the injection-molded finished product and transports it to the sprue cutting device (5) for sprue cutting.

2. The impeller pin injection molding device according to claim 1, characterized in that: The needle delivery device (2) includes a needle vibrating plate (21), a delivery base (22), and a pusher block (23). The upper side of the delivery base (22) is provided with a needle delivery groove (221). A needle placement block (222) is fixed at one end of the groove, and a gripping end is formed at the other end for the needle transfer robot (3) to grasp. The needle vibrating plate (21) is connected to the needle placement block (222) through a pipe to deliver the needle to the needle placement block (222). The needle placement block (222) places the needle vertically on the needle delivery groove (221). The pusher block (23) is slidably disposed in the needle delivery groove (221) to push the needle in the needle placement block (222) to the gripping end.

3. The impeller pin injection molding device according to claim 2, characterized in that: The needle placement block (222) has a lower needle hole (2221) and a guide needle groove (2222). The diameter of the lower needle hole (2221) and the width of the guide needle groove (2222) are adapted to the diameter of the needle. One end of the guide needle groove (2222) extends to the gripping end. The upper end of the lower needle hole (2221) is connected to the needle vibrating plate (21) through a pipe, and the lower end is connected to the guide needle groove (2222).

4. The impeller pin injection molding device according to claim 1, 2, or 3, characterized in that: The pin transfer robot (3) includes a translation slide rail (31), a translation base (32), a pin gripper (33), and a finished product gripper (34). One end of the translation slide rail (31) extends above the pin conveying device (2) and the sprue cutting device (5), and the other end extends to the impeller injection molding device (4). The translation base (32) is slidably mounted on the translation slide rail (31). The pin gripper (33) and the finished product gripper (34) are mounted on the translation base (32) at intervals, so that the pin transfer robot (3) follows the following actions: the translation base (32) moves through the translation slide rail (31) to the pin transfer device (32). The sliding rail (31) moves above the needle conveying device (2), the needle gripping claw (33) grips the needle, and then moves horizontally above the impeller injection molding device (4), the finished product gripping claw (34) grips the finished product, and then the needle gripping claw (33) puts the needle in, and then the horizontal base (32) moves above the sprue cutting device (5) through the horizontal sliding rail (31), the finished product gripping claw (34) puts the finished product into the sprue cutting device (5), the finished product gripping claw (34) holds the waste residue, and then the horizontal base (32) moves above the needle conveying device (2) through the horizontal sliding rail (31), and repeats the above steps; If the finished product gripper (34) grips waste residue, the waste residue will be discarded during the process of moving from the needle conveying device (2) to the impeller injection molding device (4).

5. The impeller pin injection molding device according to claim 4, characterized in that: The pin gripper (33) includes a pin base plate (331), a pin push rod (332), a pin gripping post (333), and a pin detection head (334). The pin detection head (334) is fixedly mounted on the translation base plate (2) to detect pins. The pin base plate (331) is mounted on the translation base (32) in a lifting manner. The pin gripping post (333) is fixedly mounted on the pin base plate (331). The pin push rod (332) is fixedly mounted on the translation base plate (332). The pin is raised and lowered on the pin base plate (331) and above the pin gripping column (333). The pin gripping column (333) has a pin clamping channel. After the pin detection head (334) detects the pin, the pin base plate (331) drops, so that the pin enters the pin clamping channel and is clamped and gripped by the pin clamping channel. The pin push rod (332) is inserted into the pin clamping channel and drops to push the pin out of the pin clamping channel and place it into the impeller injection molding device (4).

6. The impeller pin injection molding device according to claim 4, characterized in that: The finished product gripper (34) includes a finished product base plate (341), a finished product gripper (342), and a downward-pushing cylinder (343). The finished product base plate (341) is vertically mounted on a translational base (32). The finished product gripper (342) is fixed on the finished product base plate (341). The cylinder body of the downward-pushing cylinder (343) is fixed on the side of the finished product gripper (342). The push rod is set downward to extend downward to hold the water outlet, so as to position the water outlet during the water outlet cutting process.

7. The impeller pin injection molding device according to claim 1, 2, or 3, characterized in that: The impeller injection molding device (4) includes an injection molding mechanism, a rotating platform (42), a guide alignment mechanism (43), and several injection molding fixtures (41). Several injection molding fixtures (41) are fixedly installed on the rotating platform (42) and are distributed in a circle on the rotating platform (42). By rotating the rotating platform (42), the injection molding fixtures (41) are transported to the lower part of the injection molding mechanism or the lower part of the pin transfer robot (3). The guide alignment mechanism (43) is installed on the frame (1) near the lower part of the pin transfer robot (3) to guide the pin of the pin transfer robot (3) to be inserted into the injection molding fixture (41).

8. The impeller pin injection molding device according to claim 7, characterized in that: The guiding alignment mechanism (43) includes an alignment slide rail (431), an alignment base (432), and an alignment plate (433) that can be raised and lowered and mounted on the alignment base (432). The alignment base (432) is slidably mounted on the alignment slide rail (431) to drive the alignment plate (433) to slide above the injection molding jig (41) or move out above the injection molding jig (41). The alignment plate (433) is provided with an alignment hole and a linear bushing. The injection molding jig (41) is provided with a linear shaft. When the alignment plate (433) is above the injection molding jig (41), the alignment plate (433) descends, so that the linear shaft passes into the linear bushing, and the alignment hole is aligned with the pin position on the injection molding jig (41).

9. The impeller pin injection molding device according to claim 1, 2, or 3, characterized in that: The water-cutting device (5) includes a water-cutting base (51), a left cutter (52) and a right cutter (53). The upper side of the water-cutting base (51) is provided with a receiving groove for accommodating the finished impeller. The left cutter (52) and the right cutter (53) are slidably arranged on the left and right sides of the receiving groove to cut off the water nozzle on the finished impeller by sliding relative to each other.

10. The impeller pin injection molding device according to claim 9, characterized in that: The lower end of the cut-out base (51) is provided with a finished product pipe (54), and the upper end of the finished product pipe (54) is connected to the receiving groove.

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