Impeller pin injection molding machine

Abstract

The invention discloses an impeller pin injection molding machine 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; a contact pin conveyed 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 obtained after injection molding and conveys the finished product to the water gap cutting device for water gap cutting. A slag discharging frame is arranged at the position, relative to the position between the contact pin conveying device and the impeller injection molding device, of the rack, and waste slag can be directly put into the slag discharging frame in the contact pin transferring process. The device can realize automatic operation of pin conveying, injection molding and water gap cutting, the production efficiency is improved, waste residues are convenient to clean in time by arranging the residue discharging frame, and the production environment and normal operation of equipment are guaranteed.

Description

Technical Field

[0001] The present invention relates to an injection molding device, and more particularly to an impeller pin injection molding machine. Background Art

[0002] In the field of mechanical engineering, the impeller, as a core component for power transmission and energy conversion, is widely used in devices such as pumps, fans, and compressors. Its assembly quality directly affects the operating efficiency, stability, and service life of the device. Due to its excellent properties such as high hardness, wear resistance, and corrosion resistance, tungsten steel rods are increasingly used in the manufacture of high-performance impellers as pins at the impeller hub.

[0003] However, the assembly of tungsten steel rod impellers faces many challenges. In the existing assembly process of tungsten steel rod impellers, first, the impeller is injection molded by an injection molding device, and then a tungsten steel rod is selected and manually tapped into the impeller. However, since the existing tungsten steel rods are generally relatively thin, there are problems in difficult assembly during the manual tapping assembly process. If a special assembly device is used, there will also be certain problems in difficult alignment during the assembly process, resulting in low assembly efficiency. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an impeller pin injection molding machine that can effectively improve the production efficiency of impellers.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An impeller pin injection molding machine includes a frame and a pin conveying device, a pin transfer manipulator, an impeller injection molding device, and a gate cutting device, all of which are arranged on the frame. The pin transfer manipulator is arranged between the pin conveying device and the impeller injection molding device, and the gate cutting device is adjacent to the pin conveying device. The pin transferred by the pin conveying device is transferred into the impeller injection molding device by the pin transfer manipulator, then the impeller is injection molded onto the pin by the impeller injection molding device, and then the pin transfer manipulator grabs the injection molded finished product and conveys it to the gate cutting device for gate cutting. A slag discharge frame is provided at the position of the frame relative to the pin conveying device and the impeller injection molding device. During the process of the pin transfer manipulator transferring the pin into the impeller injection molding device, if there is waste slag, the waste slag is directly put into the slag discharge frame.

[0006] As a further improvement of the present invention patent, the pin conveying device includes a pin vibrating disk, a conveying base, and a pin pushing block. A pin conveying groove is opened on the upper side of the conveying base. One end of the pin conveying groove is fixed with a pin placing block, and the other end forms a grasping end for the pin transfer manipulator to grab. The pin vibrating disk is connected to the pin placing block through a pipeline to convey the pin to the pin placing block through the pipeline. The pin placing block vertically places the pin on the pin conveying groove, and the pin pushing block is slidably arranged in the pin conveying groove to push the pin in the pin placing block to the grasping end.

[0007] As a further improvement of the patent of the present invention, a lower pinhole and a guide pin groove are provided in the needle placing block, the aperture of the lower pinhole and the width of the guide pin groove are adapted to the diameter of the insertion pin, one end of the guide pin groove extends to the grabbing end, the upper end of the lower pinhole is connected to the insertion pin vibration disk through a pipe, and the lower end is connected to the guide pin groove.

[0008] As a further improvement of the present invention, the pin transfer manipulator includes a translation slide rail, a translation base, a pin grabbing claw and a finished product grabbing claw. One end of the translation slide rail extends to the top of the pin conveying device and the water cutting device, and the other end extends to the impeller injection molding device. The translation base is slidably installed on the translation rail, and the pin grabbing claw and the finished product grabbing claw are installed on the translation base at intervals, so that the pin transfer robot follows the following actions: the translation base moves to the top of the pin conveying device through the translation rail, the pin grabbing claw grabs the pin, and then translates to the top of the impeller injection molding device, the finished product grabbing claw grabs the finished product, and then the pin grabbing claw puts the pin in, and then the translation base moves to the top of the water cutting device through the translation rail, and the finished product grabbing claw puts the finished product into the water cutting device after the water cutting device is cut, and the finished product grabbing claw keeps grabbing the waste residue, and then the translation base moves to the top of the pin conveying device through the translation rail, and the above steps are repeated; wherein, if the finished product grabbing claw grabs waste residue, the waste residue will be discarded in the process of moving from the pin conveying device to the impeller injection molding device.

[0009] As a further improvement of the present invention, the pin grabbing claw includes a pin base plate, a pin push rod, a pin grabbing column and a pin detection head. The pin detection head is fixedly mounted on the translation base plate to detect the pins, the pin base plate is installed on the translation base in a lifting manner, the pin grabbing column is fixedly mounted on the pin base plate, the pin push rod is movably arranged on the pin base plate and is located above the pin grabbing column, and a pin clamping channel is provided in the pin grabbing column. After the pin detection head detects the pin, the pin base plate descends, so that the pin enters the pin clamping channel and is clamped and grabbed by the pin clamping channel, and the pin push rod is inserted into the pin clamping channel to descend and push the pin in the pin clamping channel out and place it in the impeller injection molding device.

[0010] As a further improvement of the present invention, the finished product grabbing claw comprises a finished product bottom plate, a finished product clamping claw and a lower push cylinder. The finished product bottom plate is installed on the translation base in a liftable manner, the finished product clamping claw is fixed on the finished product bottom plate, the cylinder body of the lower push cylinder is fixed on the side of the finished product clamping claw, and the push rod is arranged downward to extend downward to support the nozzle, so as to position the nozzle during the nozzle cutting process.

[0011] As a further improvement of the present invention patent, the impeller injection molding device includes an injection molding mechanism, a rotating platform, a guiding and aligning mechanism, and a plurality of injection molding jigs. The plurality of injection molding jigs are fixedly installed on the rotating platform and are circumferentially distributed on the rotating platform. Through the rotation of the rotating platform, the injection molding jigs are conveyed below the injection molding mechanism or below the pin transfer manipulator. The guiding and aligning mechanism is installed on the frame near the position below the pin manipulator to guide the pins of the pin manipulator to be inserted into the injection molding jigs.

[0012] As a further improvement of the present invention patent, the guiding and aligning mechanism includes an alignment slide rail, an alignment base, and an alignment plate that is liftable and installed on the alignment base. The alignment base is slidably installed on the alignment slide rail to drive the alignment plate to slide above the injection molding jig or move out from above the injection molding jig. An alignment hole and a linear bushing are provided on the alignment plate, and a linear shaft is provided on the injection molding jig. When the alignment plate is above the injection molding jig, the alignment plate descends, so that the linear shaft penetrates into the linear bushing, and the alignment hole is aligned with the pin position on the injection molding jig.

[0013] As a further improvement of the present invention patent, the gate cutting device includes a gate cutting base, a left cutting knife, and a right cutting knife. A receiving groove for receiving the finished impeller is provided on the upper side surface of the gate cutting base, and the left cutting knife and the right cutting knife are relatively slidably arranged on the left and right sides of the receiving groove to relatively slide and cut off the gate on the finished impeller.

[0014] As a further improvement of the present invention patent, a finished product pipe is provided at the lower end of the gate cutting base, and the upper end of the finished product pipe is communicated with the receiving groove.

[0015] Advantages of the present invention patent: Compared with the traditional tungsten steel rod impeller assembly method in the background art, the present invention has significant advancement. In the traditional method, the tungsten steel rod is manually knocked into the impeller. Due to the thin tungsten steel rod, there are problems with difficult assembly. And if a special assembly device is used, there is also a problem of alignment difficulty, resulting in low assembly efficiency. While the impeller pin injection molding machine of the present invention realizes an automated process of pin conveying, injection molding, and gate cutting. By first placing the pins and then injecting the impeller, there is no need for additional subsequent assembly processes, effectively solving many problems of the traditional assembly method, improving production efficiency, ensuring product quality, and enhancing the overall level of impeller assembly. Description of the drawings

[0016] Figure 1 is the overall structure diagram of the impeller pin injection molding machine of the present invention; Figure 2 is Figure 1 the overall structure diagram of the pin conveying device in Figure 3 is Figure 2 the internal structure diagram of the pin placing block in Figure 4 For Figure 1 The overall structure diagram of the middle pin transfer manipulator; Figure 5 For Figure 4 The overall structure diagram of the middle pin grasping claw; Figure 6 For Figure 4 The overall structure diagram of the middle finished product grasping claw; Figure 7 For Figure 1 The overall structure diagram of the middle impeller injection molding device; Figure 8 For Figure 6 The overall structure diagram of the middle guiding and aligning mechanism; Figure 9 For Figure 1 The overall structure diagram of the middle gate cutting device. Specific embodiments

[0017] The following will further describe the present invention in detail with reference to the embodiments given in the accompanying drawings.

[0018] Referring to Figure 1 As shown, the impeller pin injection molding machine of this embodiment includes a frame 1, a pin conveying device 2, a pin transfer manipulator 3, an impeller injection molding device 4, and a gate cutting device 5, all of which are arranged on the frame 1. The pin transfer manipulator 3 is arranged between the pin conveying device 2 and the impeller injection molding device 4, and the gate cutting device 5 is adjacent to the pin conveying device 2. The pins sent out by the pin conveying device 2 are transferred into the impeller injection molding device 4 by the pin transfer manipulator 3. Then, the impeller is injection molded onto the pins by the impeller injection molding device 4. After that, the injection molded finished products are grabbed by the pin transfer manipulator 3 and conveyed to the gate cutting device 5 for gate cutting. A slag discharge frame 6 is provided at the position of the frame 1 relative to the pin conveying device 2 and the impeller injection molding device 4. During the process of the pin transfer manipulator 3 transferring the pins to the impeller injection molding device 4, if there is waste slag, the waste slag is directly put into the slag discharge frame 6. Through the pin injection molding machine of this embodiment, during the process of producing the impeller, first, the pin transfer manipulator 3 moves to the pin conveying device 2 to grab the pins, and then places them into the impeller injection molding device 4. Through the action of the impeller injection molding device 4, the impeller is injection molded on the basis of the pins. Then, the final treatment of the injection molded impeller is realized through the gate cutting device 5. During the process of conveying new pins, the waste slag after treatment is removed through the slag discharge frame 6. In this way, an automated impeller pin injection molding process is realized. Compared with the prior art method of first injection molding the impeller and then assembling it, the production efficiency is higher.

[0019] Furthermore, referring to Figure 2As shown in the figure, the pin feeding device 2 includes a pin vibrating disk 21, a feeding base 22 and a pin pushing block 23. The upper side of the feeding base 22 is provided with a pin feeding groove 221. One end of the pin feeding groove 221 is fixedly provided with a pin placing block 222, and the other end forms a grasping end for the pin transfer manipulator 3 to grasp. The pin vibrating disk 21 is connected to the pin placing block 222 through a pipeline to convey the pins to the pin placing block 222 through the pipeline. The pin placing block 222 vertically places the pins on the pin feeding groove 221. The pin pushing block 23 is slidably arranged in the pin feeding groove 221 to push the pins in the pin placing block 222 to the grasping end. This structure realizes the automatic feeding of pins. Compared with manually selecting pins in the background art, it improves the efficiency and accuracy of pin feeding.

[0020] Further, as shown in Figure 3 the figure, the pin placing block 222 is provided with a pin dropping hole 2221 and a pin guiding groove 2222. The aperture of the pin dropping hole 2221 and the groove width of the pin guiding groove 2222 are adapted to the diameter of the pins. One end of the pin guiding groove 2222 extends to the grasping end. The upper end of the pin dropping hole 2221 is connected to the pin vibrating disk 21 through a pipeline, and the lower end is communicated with the pin guiding groove 2222. This design can better guide the pin feeding, ensure the stability of pin feeding, and solve the problem that it is difficult to align the pins during manual assembly in the background art. During the feeding process, the pins first enter the pin dropping hole 2221. In this embodiment, the pin pushing block 23 is also provided with a through hole having the same diameter as the pin dropping hole 2221. When the pins fall from the pin dropping hole 2221, they will fall into this through hole, and then the pins are conveyed by moving through this through hole to the grasping end.

[0021] Further, as shown in Figure 4As shown in the figure, the pin transfer manipulator 3 includes a translation slide rail 31, a translation base 32, a pin grasping claw 33 and a finished product grasping claw 34. One end of the translation slide rail 31 extends above the pin conveying device 2 and the gate cutting device 5, and the other end extends to the impeller injection molding device 4. The translation base 32 is slidably installed on the translation slide rail 31, and the pin grasping claw 33 and the finished product grasping claw 34 are installed on the translation base 32 at intervals. The pin transfer manipulator 3 follows the following actions: the translation base 32 moves above the pin conveying device 2 through the translation slide rail 31, the pin grasping claw 33 grasps the pins, then moves above the impeller injection molding device 4, the finished product grasping claw 34 grasps the finished products, then the pin grasping claw 33 places the pins, and then the translation base 32 moves above the gate cutting device 5 through the translation slide rail 31. After the finished product grasping claw 34 places the finished products into the gate cutting device 5 for gate cutting, the finished product grasping claw 34 holds the waste residues, and then the translation base 32 moves above the pin conveying device 2 through the translation slide rail 31 to repeat the above steps. Among them, if the finished product grasping claw 34 grasps waste residues, the waste residues will be discarded during the process of moving from the pin conveying device 2 to the impeller injection molding device 4. Through the setting of the above structure, it can be realized that when cutting the gate, the pins can be re-grasped and then enter the next production process, and the slag discharging operation can be carried out during the process of entering the next injection molding process, which can make the overall process more convenient and fast and the operation more smooth.

[0022] Further, referring to Figure 5 As shown in the figure, the pin grasping claw 33 includes a pin bottom plate 331, a pin push rod 332, a pin grasping column 333 and a pin detection head 334. The pin detection head 334 is fixedly installed on the translation base 32 to detect the pins. The pin bottom plate 331 is installed on the translation base 32 in a lifting manner. The pin grasping column 333 is fixed on the pin bottom plate 331. The pin push rod 332 is arranged on the pin bottom plate 331 in a liftable manner and is above the pin grasping column 333. A pin clamping channel is provided in the pin grasping column 333. After the pin detection head 334 detects the pins, the pin bottom plate 331 descends, the pins enter the clamping channel and are clamped and grasped, and the pin push rod 332 is inserted into the clamping channel to push the pins out and place them on the impeller injection molding device 4. Through the real-time monitoring of the pin detection head 334 and the precise pushing of the push rod, it is ensured that the pin grasping and placing positions are accurate, avoiding the deviation of manual operation and improving the assembly accuracy. During the process of grasping the pins, after the pin detection head 334 detects the pins, the pin bottom plate 331 descends, so that the pins enter the clamping channel. The clamping channel of the pin grasping column 333 clamps the pins. After moving in place, the pin push rod 332 descends to push the pins out and place them on the injection fixture 41 of the impeller injection molding device 4.

[0023] Further, referring to Figure 6As shown in the figure, the finished product gripping claw 34 includes a finished product base plate 341, finished product clamping claws 342, and a lower pushing cylinder 343. The finished product base plate 341 is installed on the translation base 32 in a liftable manner. The finished product clamping claws 342 are fixed to the finished product base plate 341. The cylinder body of the lower pushing cylinder 343 is fixed to the side of the finished product clamping claws 342, and the pushing rod is arranged downward to extend downward to hold against the sprue, so as to position the sprue during the process of cutting the sprue. The automated slag removal design eliminates the need for manual cleaning, reduces downtime, and improves production continuity. The finished product clamping claws 342 stably grip the finished product, ensuring the reliability of the transfer process. In this embodiment, when the finished product gripping claw 34 grips the finished product, it only grips the sprue of the finished product. Thus, during the process of cutting the sprue, the gripping state can be maintained through the finished product gripping claw 34. At the same time, during the process of cutting the sprue, the sprue is further positioned to ensure the reliability of the sprue cutting process. Additionally, in this embodiment, a photoelectric sensor is also provided on the side wall of the finished product clamping claws 342 to detect whether the sprue is gripped.

[0024] Further, referring to Figure 7 As shown in the figure, the impeller injection molding device 4 includes an injection molding mechanism (which is an existing injection head structure and is not shown in the figure), a rotating platform 42, a guiding and aligning mechanism 43, and a plurality of injection molding jigs 41. The plurality of injection molding jigs 41 are fixed on the rotating platform 42 and are distributed in a circular pattern. The rotation of the rotating platform 42 can transport the injection molding jigs 41 below the injection molding mechanism or below the pin transfer manipulator 3. The guiding and aligning mechanism 43 is installed on the frame 1 at a position close to the lower part of the pin transfer manipulator 3 to guide the pins of the pin transfer manipulator 3 to be inserted into the injection molding jigs 41. The rotating platform 42 cooperates with the injection molding jigs 41 distributed in a circular pattern to achieve multi-station continuous injection molding. The guiding and aligning mechanism 43 solves the problem that it is difficult to align the pins with the impeller during assembly in the background art, and improves the assembly success rate and efficiency.

[0025] Further, referring to Figure 8 As shown in the figure, the guiding and aligning mechanism 43 includes an alignment slide rail 431, an alignment base 432, and an alignment plate 433 that is installed on the alignment base 432 in a liftable manner. The alignment base 432 is slidably installed on the alignment slide rail 431 to drive the alignment plate 433 to slide above the injection molding jig 41 or move out. The alignment plate 433 is provided with alignment holes and linear bushings, and 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, and the linear shaft penetrates into the linear bushing, and the alignment holes are aligned with the positions of the pins on the injection molding jig 41. Through the mechanical structure of the slide rail sliding and lifting cooperation, the precise alignment of the alignment plate 433 and the injection molding jig 41 is achieved, ensuring the precise insertion position of the pins. 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 fast, and has less error. In this embodiment, the alignment plate 433 is driven by a cylinder.

[0026] Further, referring toFigure 9 As shown in Figure 9 , the gate cutting device 5 includes a gate cutting base 51, a left cutting knife 52, and a right cutting knife 53. An accommodation groove for accommodating the finished impeller is provided on the upper side of the gate cutting base 51. The left cutting knife 52 and the right cutting knife 53 are slidably arranged opposite to each other on the left and right sides of the accommodation groove, and can relatively slide to cut off the gate on the finished impeller. A finished product pipe 54 is provided at the lower end of the gate cutting base 51, and the upper end of the finished product pipe 54 communicates with the accommodation groove. Mechanized gate cutting replaces manual operation, and the cutting action is accurate and efficient. The accommodation groove fixes the position of the finished impeller, and the finished product pipe facilitates the collection of the finished product, improving the subsequent processing efficiency. The finished impeller is placed in the accommodation groove, the left cutting knife 52 and the right cutting knife 53 relatively slide to cut off the gate, the finished product is discharged and collected through the finished product pipe 54, and the gate waste residue is clamped away by the finished product grasping claw 34.

[0027] In summary, through the automatic linkage of the pin feeding device 2, the pin transfer manipulator 3, the impeller injection molding device 4, and the gate cutting device 5, this solution constructs a complete production line from pin feeding, injection molding to gate trimming. Compared with the method of manually knocking and assembling pins in the background technology, the assembly efficiency and accuracy are significantly improved; the cooperation between the slag discharge frame 6 and the lower top cylinder 343 of the finished product grasping claw 34 realizes automatic slag cleaning and keeps the equipment clean; the mechanical alignment structure of the guiding and aligning mechanism 43 and the injection molding fixture 41 solves the problem that it is difficult to align the pins with the impeller during assembly; the multi-station design of the rotating platform 42 and the double-claw cyclic operation of the pin transfer manipulator 3 further improve the production efficiency. Through the coordinated operation of each component, the whole set of systems effectively overcomes the problem of low efficiency in the existing tungsten steel rod impeller assembly process.

[0028] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An impeller pin injection molding machine, characterized in that: The invention comprises a frame (1), a pin conveying device (2), a pin transfer robot (3), an impeller injection molding device (4), and a water-cutting device (5), all of which are arranged on the frame (1); the pin transfer robot (3) is arranged between the pin conveying device (2) and the impeller injection molding device (4); the water-cutting device (5) is adjacent to the pin conveying device (2), so that the pins delivered by the pin conveying device (2) can be transferred to the impeller injection molding device (4) through the pin transfer robot (3). , and then the impeller is injection molded onto the pin by the impeller injection molding device (4), and then the injection molded product is grasped by the pin transfer robot (3) and transported to the water cut device (5) for water cut. The frame (1) is provided with a slag discharge frame (6) at a position between the pin transport device (2) and the impeller injection molding device (4). During the process of the pin transfer robot (3) transferring the pin to the impeller injection molding device (4), if there is waste slag, the waste slag is directly placed in the slag discharge frame (6).

2. The impeller pin injection molding machine according to claim 1, characterized in that: The needle insertion conveying device (2) comprises a needle insertion vibration disk (21), a conveying base (22) and a needle pushing block (23); the upper side surface of the conveying base (22) is provided with a needle insertion groove (221); a notch at one end of the needle insertion groove (221) fixes a needle placing block (222); the other end forms a grasping end for grasping by a needle insertion transfer manipulator (3); the needle insertion vibration disk (21) is connected to the needle placing block (222) via a pipeline so as to convey the needle to the needle placing block (222) via the pipeline; the needle placing block (222) vertically places the needle on the needle insertion groove (221); and the needle pushing block (23) is slidably arranged in the needle insertion groove (221) so as to push the needle in the needle placing block (222) to the grasping end.

3. The impeller pin injection molding machine according to claim 2, characterized in that: The needle placing block (222) is provided with a lower needle hole (2221) and a needle guide groove (2222); the aperture of the lower needle hole (2221) and the groove width of the needle guide groove (2222) are adapted to the diameter of the insertion needle; one end of the needle guide groove (2222) extends to the grasping end; the upper end of the lower needle hole (2221) is connected to the insertion needle vibration disk (21) via a pipeline, and the lower end is communicated with the needle guide groove (2222).

4. The impeller pin injection molding machine according to claim 1, 2 or 3, characterized in that: The pin transfer robot (3) comprises a translation slide rail (31), a translation base (32), a pin grabbing claw (33) and a finished product grabbing claw (34), one end of the translation slide rail (31) extends to the top of the pin conveying device (2) and the water cut 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 grabbing claw (33) and the finished product grabbing claw (34) are installed on the translation base (32) at intervals, so that the pin transfer robot (3) follows the following actions: the translation base (32) moves horizontally to move the pin conveying device (2) and the water cut device (5) to move the pin conveying device (2) and the water cut device (5) to move the pin conveying device (2) and the finished product grabbing claw (34 ... The translation slide rail (31) moves to the top of the pin conveying device (2), the pin grabbing claw (33) grabs the pin, and then translates to the top of the impeller injection molding device (4), the finished product grabbing claw (34) grabs the finished product, and then the pin grabbing claw (33) puts the pin in, and then the translation base (32) moves to the top of the water cutting device (5) through the translation slide rail (31), the finished product grabbing claw (34) puts the finished product into the water cutting device (5). After the water cutting, the finished product grabbing claw (34) keeps grabbing the waste residue, and then the translation base (32) moves to the top of the pin conveying device (2) through the translation slide rail (31), and repeats the above steps; If the finished product grabbing claw (34) grabs waste residue, the waste residue is discarded during the process of moving from the pin conveying device (2) to the impeller injection molding device (4).

5. The impeller pin injection molding machine according to claim 4, characterized in that: The pin grabbing claw (33) comprises a pin base plate (331), a pin push rod (332), a pin grabbing column (333), and a pin detection head (334); the pin detection head (334) is fixedly mounted on the translation base (32) to detect the pins; the pin base plate (331) is mounted on the translation base (32) in a lifting manner; the pin grabbing column (333) is fixedly mounted on the pin base plate (331); the pin push rod (332) is ) is liftably arranged on the pin base plate (331) and is located above the pin grabbing column (333). The pin grabbing column (333) is provided with a pin clamping channel. After the pin detection head (334) detects the pin, the pin base plate (331) descends, allowing the pin to enter the pin clamping channel and be clamped and grabbed by the pin clamping channel. The pin push rod (332) is inserted into the pin clamping channel and descends to push the pin in the pin clamping channel out and place it in the impeller injection molding device (4).

6. The impeller pin injection molding machine according to claim 4, characterized in that: The finished product grabbing claw (34) comprises a finished product bottom plate (341), a finished product clamping claw (342) and a lower push cylinder (343); the finished product bottom plate (341) is mounted on the translation base (32) in a liftable manner; the finished product clamping claw (342) is fixed on the finished product bottom plate (341); the cylinder body of the lower push cylinder (343) is fixed on the side of the finished product clamping claw (342); the push rod is arranged downward so as to extend downward to support the water outlet, so as to position the water outlet during the water outlet cutting process.

7. The impeller pin injection molding machine according to claim 1, 2 or 3, characterized in that: The impeller injection molding device (4) comprises an injection molding mechanism, a rotating platform (42), a guiding and aligning mechanism (43) and a plurality of injection molding fixtures (41). The plurality of injection molding fixtures (41) are fixedly mounted on the rotating platform (42) and are distributed in a circular pattern on the rotating platform (42). The injection molding fixtures (41) are transported to the bottom of the injection molding mechanism or to the bottom of the pin transfer robot (3) through the rotation of the rotating platform (42). The guiding and aligning mechanism (43) is mounted on the frame (1) at a position close to the bottom 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 machine according to claim 7, characterized in that: The guiding alignment mechanism (43) comprises an alignment slide rail (431), an alignment base (432) and an alignment plate (433) which is installed on the alignment base (432) in a liftable manner. The alignment base (432) is slidably installed on the alignment slide rail (431) to drive the alignment plate (433) to slide to the top of the injection molding fixture (41), or to move out from the top of the injection molding fixture (41). The alignment plate (433) is provided with an alignment hole and a linear shaft sleeve. The injection molding fixture (41) is provided with a linear shaft. When the alignment plate (433) is located above the injection molding fixture (41), the alignment plate (433) descends, so that the linear shaft penetrates into the linear shaft sleeve, and the alignment hole is aligned with the pin position on the injection molding fixture (41).

9. The impeller pin injection molding machine according to claim 1, 2 or 3, characterized in that: The water-cutting device (5) comprises a water-cutting base (51), a left cutter (52) and a right cutter (53); an upper side surface of the water-cutting base (51) is provided with a receiving groove for receiving a finished impeller; the left cutter (52) and the right cutter (53) are relatively slidably arranged on the left and right sides of the receiving groove so as to relatively slide and cut off the water-cut on the finished impeller.

10. The impeller pin injection molding machine according to claim 9, characterized in that: A finished product pipe (54) is provided at the lower end of the water cutout base (51), and the upper end of the finished product pipe (54) is communicated with the containing groove.

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