Quick core-pulling mechanism for injection molding of precision impeller

Abstract

The invention relates to the technical field of core-pulling mechanisms, in particular to a quick core-pulling mechanism for precise impeller injection molding, the quick core-pulling mechanism for precise impeller injection molding comprises a mounting seat, the outer wall of the middle of the top of the mounting seat is rotatably connected with a driving seat, and a slotted hole is formed in the outer wall of the top of the driving seat; the device has the beneficial effects that the movement track of the arc-shaped forming plate is limited, so that the arc-shaped forming plate is prevented from deviating during movement, the accuracy of the arc-shaped forming plate in the movement process is correspondingly improved, the deviation of the arc-shaped forming plate in the movement process is reduced, meanwhile, when the driving seat stops moving, the limiting wheel loses driving force, and the arc-shaped forming plate is prevented from moving. And through meshing connection between a limiting wheel and limiting teeth, a fourth mounting rod drives the arc-shaped forming plate to be fixed to the original position under the action of static friction force between the limiting wheel and the limiting teeth, the arc-shaped forming plate is prevented from moving under the action of external force in the static state, and the stability of the arc-shaped forming plate is correspondingly improved.

Description

Technical Field

[0001] The invention relates to the field of core pulling mechanisms, in particular to a rapid core pulling mechanism for precision impeller injection molding. Background Art

[0002] The quick core pulling mechanism for wheel injection molding refers to the use of a specific mechanical structure during the injection molding process to quickly and accurately pull out the formed plastic products (such as impellers) from the core of the mold in order to complete the molding and demoulding of the product parts. The mechanism is mainly composed of a slider group, a core pulling assembly, a drive device, an arc traction assembly, and a guide device.

[0003] In the prior art, after the arc forming plate in the core pulling assembly stops moving, it is only locked by mechanically stopping the movement, and the arc forming plate is not locked separately. In this way, the arc forming plate is prone to instability under the action of external force, thereby affecting the impeller forming effect. Summary of the invention

[0004] The object of the present invention is to provide a rapid core-pulling mechanism for precision impeller injection molding to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the quick core pulling mechanism for impeller injection molding comprises: a mounting seat, an outer wall in the middle of the top of the mounting seat is rotatably connected with a driving seat, a slot is provided on the outer wall of the top of the driving seat, a square slot is provided on the outer wall of the top of the mounting seat, a circular slot is provided inside the top of the mounting seat located in the middle of the driving seat, a transmission mechanism is provided inside the square slot, a core pulling mechanism is provided on one side of the transmission mechanism, the transmission mechanism comprises a motor, the outer wall of the motor is fixedly connected to one side of the inner wall of the square slot, and the core pulling mechanism comprises a mounting rod 1, and the outer wall of the bottom of the mounting rod 1 is fixedly connected to the inner wall of the slot.

[0006] Preferably, the output end of the motor is fixedly connected to a rotating rod, and the side of the rotating rod close to the output end is fixedly connected to a driving wheel. A T-shaped groove is provided on the outer wall of the top of the mounting seat, and T-shaped sliders are slidably connected inside the two T-shaped grooves. The outer wall of the top of the T-shaped slider on the right side is fixedly connected to gear seat 1, and the outer wall of the top of the T-shaped slider on the left side is fixedly connected to gear seat 2. The outer wall of the bottom of the gear seat 1 is slidably connected to the outer wall of the top of the mounting seat.

[0007] Preferably, a tooth 1 is fixedly connected to the outer wall of the driving seat, and the outer wall of the tooth 1 is meshingly connected with the outer wall of one side of the tooth seat 1.

[0008] Preferably, the outer wall of the rotating rod is rotatably connected to a fixed plate, the outer wall of the rotating rod is movably connected to a half gear, the outer wall at the top of the half gear is meshingly connected to the outer wall at the bottom of the second gear seat, the outer wall on one side of the half gear is fixedly connected to a fixing rod, and the outer wall on one side of the half gear is fixedly connected to a reset spring.

[0009] Preferably, the interior of the return spring is movably connected to the outer wall of the rotating rod, the outer wall of one end of the return spring is fixedly connected to the outer wall of one side of the fixed plate, a slot is provided on the outer wall at the top of the fixed plate, the outer walls on both sides of the half gear are fixedly connected with sliding rods, the outer wall of the sliding rod is slidably connected with sliding grooves, and the sliding grooves are provided on both sides of the inner wall of the square groove.

[0010] Preferably, the outer wall of the mounting rod one is rotatably connected to a connecting plate, six of the connecting plates are provided with circular holes, the insides of the six circular holes are rotatably connected to the mounting rod two, the outer walls of the bottoms of the six mounting rods two are fixedly connected to arc-shaped forming plates, the outer walls of the six arc-shaped forming plates are rotatably connected to the mounting rod four, and the outer wall of the mounting rod four is fixedly connected to a limiting wheel.

[0011] Preferably, the driving seat is fixedly connected to the inside with a mounting ring, the outer wall at the top of the mounting ring is provided with a track groove 1, the inner walls of the six track grooves 1 are fixedly connected with limiting teeth, the outer wall on one side of the limiting teeth is meshed with the outer wall of the limiting wheel, and the inner wall of the mounting ring is fixedly connected with internal teeth.

[0012] Preferably, the circular groove is internally rotatably connected with a driving sleeve, the outer wall of the driving sleeve is provided with a track groove 2, the driving sleeve is internally slidably connected with an upward moving column, the outer wall of the upward moving column is fixedly connected with a guide rod, the outer wall of the guide rod is slidably connected to the inside of the track groove 2, the outer wall of the top of the driving sleeve is fixedly connected with a mounting plate, the outer wall of the top of the upward moving column is fixedly connected with an ejection pin, the outer wall of the top of the mounting plate is provided with an ejection groove, and the outer wall of the ejector pin is slidably connected to the inside of the ejection groove.

[0013] Preferably, the outer wall of the mounting plate is provided with a plurality of mounting grooves, the interior of the mounting groove is fixedly connected with a mounting rod three, the outer wall of the mounting rod three is rotatably connected with a limiting block, the outer wall of one side of the limiting block is fixedly connected with a push spring, the outer wall of one end of the push spring is fixedly connected with the inner wall of the mounting groove, and the outer wall of the limiting block is meshedly connected with the outer wall of the inner tooth.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a rapid core-pulling mechanism for precision impeller injection molding, which limits the movement trajectory of the arc-shaped molding plate to avoid deviation of the arc-shaped molding plate during movement, correspondingly increases the accuracy of the arc-shaped molding plate during movement, and reduces the deviation of the arc-shaped molding plate during movement. At the same time, when the driving seat stops moving, the limiting wheel loses driving force, and then through the meshing connection between the limiting wheel and the limiting teeth, the static friction between the limiting wheel and the limiting teeth is utilized to make the installation rod four drive the arc-shaped molding plate to be fixed in place, thereby avoiding the arc-shaped molding plate from moving when subjected to external force in a stationary state, and correspondingly increasing the stability of the arc-shaped molding plate. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A is an enlarged structural diagram; Figure 3 It is a schematic diagram of the motor structure of the present invention; Figure 4 This is a schematic diagram of the driving seat structure of the present invention; Figure 5 This is a schematic diagram of the structure of the track groove of the present invention; Figure 6 This is a schematic diagram of the structure of the mounting plate of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at location B; Figure 8 This is a schematic diagram of the driving sleeve structure of the present invention; Fig. 9 This is a schematic diagram of the structure of the mounting rod 4 of the present invention; Fig.10 This is a schematic diagram of the structure of the arc-shaped forming plate of the present invention; Fig.11 This is a structural schematic diagram of a gear holder of the present invention; Fig.12 It is a schematic diagram of the circular groove structure of the present invention.

[0015] In the figure: 1, mounting seat; 11, square groove; 12, circular groove; 2, driving seat; 3, motor; 31, rotating rod; 32, driving wheel; 33, tooth seat 1; 34, tooth seat 2; 35, tooth 1; 36, T-shaped groove; 37, T-shaped slider; 4, connecting plate; 41, mounting rod 1; 42, arc forming plate; 43, mounting rod 2; 5, mounting plate; 51, inner tooth; 52, ejection groove; 53, ejection pin; 54, driving sleeve; 55, mounting groove; 56, mounting rod 3; 57, limit block; 58, push spring; 59, track groove 2; 510, upper moving column; 511, guide rod; 6, track groove 1; 61, limit tooth; 62, mounting rod 4; 63, limit wheel; 7, half gear; 71, slide groove; 72, fixing rod; 73, fixing plate; 74, reset spring. DETAILED DESCRIPTION

[0016] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] For example, see Figure 1 - Fig.12 The present invention provides a technical solution for a fast core-pulling mechanism for precision impeller injection molding: the fast core-pulling mechanism for impeller injection molding comprises: a mounting seat 1, the outer wall in the middle of the top of the mounting seat 1 is rotatably connected to a driving seat 2, the outer wall at the top of the driving seat 2 is provided with a slot, the outer wall at the top of the mounting seat 1 is provided with a square groove 11, the inner part of the top of the mounting seat 1 located in the middle of the driving seat 2 is provided with a circular groove 12, a transmission mechanism is arranged inside the square groove 11, a core-pulling mechanism is arranged on one side of the transmission mechanism, the outer wall of the rotating rod 31 is rotatably connected to a fixing plate 73, and the outer wall of the rotating rod 31 is movably connected There is a half gear 7, the outer wall of the top of the half gear 7 is meshed with the outer wall of the bottom of the gear seat 2 34, the outer wall of one side of the half gear 7 is fixedly connected with a fixing rod 72, the outer wall of one side of the half gear 7 is fixedly connected with a return spring 74, the inside of the return spring 74 is movably sleeved with the outer wall of the rotating rod 31, the outer wall of one end of the return spring 74 is fixedly connected with the outer wall of one side of the fixing plate 73, the outer wall of the top of the fixing plate 73 is provided with a slot, the outer walls of both sides of the half gear 7 are fixedly connected with sliding rods, the outer walls of the sliding rods are slidably connected with sliding grooves 71, and the sliding grooves 71 are provided on both sides of the inner wall of the square groove 11.

[0018] The half gear 7 leaves the bottom of the second gear holder 34, thereby releasing the limit on the second gear holder 34. The cooperation between the half gear 7 and the second gear holder 34 can fix the transmission mechanism when the transmission mechanism is not in use, thereby preventing the driving seat 2 from moving in the working state, and correspondingly increasing the stability of the driving seat 2, thereby increasing the stability of the core pulling mechanism when working. By cooperating the slide bars and the slide grooves 71 on both sides of the half gear 7, the stability of the half gear 7 can be increased when the half gear 7 is fixed to the tooth seat 2 34, thereby avoiding rotation of the half gear 7 when the half gear 7 is fixed to the tooth seat 2 34, and correspondingly increasing the stability of the half gear 7, further improving the fixing effect of the half gear 7.

[0019] Embodiment 2, on the basis of embodiment 1, the transmission mechanism includes a motor 3, the outer wall of the motor 3 is fixedly connected to one side of the inner wall of the square groove 11, the output end of the motor 3 is fixedly connected to a rotating rod 31, the side of the rotating rod 31 close to the output end is fixedly connected to a driving wheel 32, a T-shaped slot 36 is provided on the outer wall of the top of the mounting seat 1, and the insides of the two T-shaped slots 36 are both slidably connected with T-shaped sliders 37, the outer wall of the top of the right T-shaped slider 37 is fixedly connected to a gear seat 1 33, and the outer wall of the top of the left T-shaped slider 37 is fixedly connected to a gear seat 2 34, the outer wall of the bottom of the gear seat 1 33 is slidably connected to the outer wall of the top of the mounting seat 1, the outer wall of the driving seat 2 is fixedly connected to a tooth 1 35, and the outer wall of the tooth 1 35 is meshed with the outer wall of one side of the tooth seat 1 33.

[0020] The tooth 1 35 is pushed to move by the tooth seat 1 33, and then the driving seat 2 can be rotated by the movement of the tooth 1 35, so that the tooth 1 35 on the other side of the driving seat 2 drives the tooth seat 2 34 to move, and at the same time drives the core pulling mechanism to move, and the driving seat 2 is fixed between the tooth seat 2 34 and the tooth seat 1 33, which effectively limits the deviation and shaking of the driving seat 2 during the rotation process, and further enhances the rotation stability of the driving seat 2.

[0021] Embodiment 3, on the basis of embodiment 2, the core pulling mechanism includes a mounting rod 1 41, the outer wall of the bottom of the mounting rod 1 41 is fixedly connected to the inner wall of the slot hole, the outer wall of the mounting rod 1 41 is rotatably connected to the connecting plate 4, six connecting plates 4 are provided with circular holes, the inside of the six circular holes are rotatably connected to the mounting rods 2 43, the outer walls of the bottoms of the six mounting rods 2 43 are fixedly connected to the arc-shaped forming plates 42, the outer walls of the six arc-shaped forming plates 42 are rotatably connected to the mounting rods 4 62, the outer walls of the mounting rods 4 62 are fixedly connected to the limiting wheel 63, the inside of the driving seat 2 is fixedly connected to the mounting ring, the outer wall of the top of the mounting ring is provided with a track groove 1 6, the inner walls of the six track grooves 6 are fixedly connected to the limiting teeth 61, the outer wall on one side of the limiting teeth 61 is meshed with the outer wall of the limiting wheel 63, and the inner wall of the mounting ring is fixedly connected to the inner teeth 51 The connecting plate 4 is driven to move by installing rod 1 41, and the movement of the connecting plate 4 can make the installing rod 2 43 drive the arc forming plate 42 to rotate, so that the core pulling mechanism is opened. Through precise mechanical linkage, the core pulling mechanism is opened quickly and accurately, reducing the need for manual operation or complex mechanical structures and improving production efficiency. At the same time, the orderly connection and coordination between multiple components make the entire mechanism compact and occupies a small area, which helps to save space and reduce manufacturing costs.

[0022] By limiting the movement trajectory of the arc-shaped forming plate 42, the deviation of the arc-shaped forming plate 42 during movement is avoided, the accuracy of the arc-shaped forming plate 42 during movement is correspondingly increased, and the deviation of the arc-shaped forming plate 42 during movement is reduced. At the same time, when the driving seat 2 stops moving, the limiting wheel 63 loses the driving force, and then the meshing connection between the limiting wheel 63 and the limiting tooth 61 is used. By utilizing the static friction between the limiting wheel 63 and the limiting tooth 61, the installation rod four 62 drives the arc-shaped forming plate 42 to stop in place, avoiding the arc-shaped forming plate 42 from moving when it is stationary due to the action of external force, and correspondingly increasing the stability of the arc-shaped forming plate 42.

[0023] Embodiment 4, on the basis of embodiment 3, the circular groove 12 is rotatably connected with a driving sleeve 54 inside, the outer wall of the driving sleeve 54 is provided with a track groove 2 59, the driving sleeve 54 is slidably connected with an upward moving column 510 inside, the outer wall of the upward moving column 510 is fixedly connected with a guide rod 511, the outer wall of the guide rod 511 is slidably connected with the inside of the track groove 2 59, the outer wall of the top of the driving sleeve 54 is fixedly connected with the mounting plate 5, the outer wall of the top of the upward moving column 510 is fixedly connected with an ejection pin 53, the outer wall of the top of the mounting plate 5 is provided with an ejection groove 52, the outer wall of the ejection pin 53 is slidably connected with the inside of the ejection groove 52, the outer wall of the mounting plate 5 is provided with a plurality of mounting grooves 55, the interior of the mounting groove 55 is fixedly connected with a mounting rod 3 56, the outer wall of the mounting rod 3 56 is rotatably connected with a limiting block 57, the outer wall of one side of the limiting block 57 is fixedly connected with a push spring 58, the outer wall of one end of the push spring 58 is fixedly connected with the inner wall of the mounting groove 55, and the outer wall of the limiting block 57 is meshed with the outer wall of the inner tooth 51.

[0024] By rotating the driving sleeve 54, the second track groove 59 can push the guide rod 511 upward, so that the guide rod 511 drives the upward moving column 510 to move upward inside the driving sleeve 54. The movement of the upward moving column 510 can push the ejector pin 53 to move upward, thereby pushing the impeller upward, making it easier to demould the injection-molded impeller, thereby improving production efficiency. When the mounting ring drives the inner teeth 51 to rotate clockwise, the inner teeth 51 push the limit block 57, so that the limit block 57 rotates on the mounting rod 3 56 and enters the interior of the mounting groove 55, thereby avoiding the movement of the mounting plate 5 when it is not needed to work, and correspondingly increasing the flexibility of the mounting plate 5, so that the mounting plate 5 can adapt to different working requirements.

[0025] When the locking cam 72 is in the locked state, the locking cam 73 is in the locked state, and the locking cam 73 is in the locked state, so that the locking cam 73 is in the locked state.

[0026] By cooperating the slide bars and the slide grooves 71 on both sides of the half gear 7, the stability of the half gear 7 can be increased when the half gear 7 is fixed to the tooth seat 2 34, thereby avoiding rotation of the half gear 7 when the half gear 7 is fixed to the tooth seat 2 34, and correspondingly increasing the stability of the half gear 7, further improving the fixing effect of the half gear 7.

[0027] At this time, the motor 3 is started, and then through the operation of the motor 3, the rotating rod 31 can drive the driving wheel 32 to rotate accordingly, and then by utilizing the meshing connection between the driving wheel 32 and the tooth seat 1 33, when the driving wheel 32 rotates, the tooth seat 1 33 can drive the T-shaped slider 37 to move inside the T-shaped groove 36, so that the tooth seat 1 33 pushes the tooth 1 35 to move, and then through the movement of the tooth 1 35, the driving seat 2 can be rotated accordingly, so that the tooth 1 35 on the other side of the driving seat 2 drives the tooth seat 2 34 to move accordingly, and drives the core pulling mechanism to move, and the driving seat 2 is fixed between the tooth seat 2 34 and the tooth seat 1 33, which effectively limits the displacement and shaking of the driving seat 2 during the rotation process, and further enhances the rotation stability of the driving seat 2.

[0028] Then, by driving the seat 2 to rotate, the mounting rod 1 41 can drive the connecting plate 4 to move, and through the movement of the connecting plate 4, the mounting rod 2 43 can drive the arc forming plate 42 to rotate, so that the core pulling mechanism is opened. Through precise mechanical linkage, the core pulling mechanism is opened quickly and accurately, reducing the need for manual operation or complex mechanical structures, and improving production efficiency. At the same time, the orderly connection and coordination between multiple components makes the entire mechanism compact and occupies a small area, which helps to save space and reduce manufacturing costs.

[0029] When the seat 2 is driven to rotate, the mounting ring can be rotated accordingly, and then the track groove 1 6 and the limiting tooth 61 can be rotated accordingly through the rotation of the mounting ring. The meshing connection between the limiting tooth 61 and the limiting wheel 63 can drive the limiting wheel 63 to rotate when the limiting tooth 61 rotates. Due to the rotational connection between the mounting rod 4 62 and the arc forming plate 42, the mounting rod 4 62 can be rotated with the limiting wheel 63. By sliding the mounting rod 4 62 on the inner wall of the track groove 1 6, the motion trajectory of the arc forming plate 42 can be limited, thereby avoiding the arc forming plate 42 is offset during movement, which correspondingly increases the accuracy of the arc-shaped forming plate 42 during movement and reduces the deviation of the arc-shaped forming plate 42 during movement. At the same time, when the driving seat 2 stops moving, the limiting wheel 63 will lose the driving force, and then through the meshing connection between the limiting wheel 63 and the limiting tooth 61, the static friction between the limiting wheel 63 and the limiting tooth 61 is utilized to make the installation rod four 62 drive the arc-shaped forming plate 42 to stop in place, thereby avoiding the arc-shaped forming plate 42 from moving due to the action of external force in a stationary state, and correspondingly increasing the stability of the arc-shaped forming plate 42.

[0030] When the core pulling mechanism finishes working and opens, the driving seat 2 rotates counterclockwise, so that the mounting ring can drive the inner teeth 51 to rotate, and then through the rotation of the inner teeth 51, the inner teeth 51 can push the limit block 57, so that the limit block 57 moves accordingly, and then through the movement of the limit block 57, the mounting plate 5 drives the driving sleeve 54 to rotate accordingly, and then through the rotation of the driving sleeve 54, the track groove 2 59 can push the guide rod 511 upward, so that the guide rod 511 drives the upper moving column 510 to move upward inside the driving sleeve 54, and through the movement of the upper moving column 510, the ejector pin 53 can be pushed to move upward, thereby lifting the impeller upward, facilitating the demoulding of the injection-molded impeller, and improving production efficiency.

[0031] When the core pulling mechanism starts to work, it drives the seat 2 to rotate clockwise. At this time, when the mounting ring drives the inner teeth 51 to rotate clockwise, the inner teeth 51 push the limit block 57, so that the limit block 57 rotates on the mounting rod 3 56 and enters the interior of the mounting groove 55, avoiding the movement of the mounting plate 5 when it does not need to work, and correspondingly increasing the flexibility of the mounting plate 5, so that the mounting plate 5 can adapt to different working requirements.

[0032] It should be noted that after the impeller is demoulded, the operator can manually rotate the mounting plate 5 to restore the ejector pin 53 to its original position, and the limit block 57 can be pushed out from the inside of the mounting groove 55 by pushing the spring 58 .

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid core pulling mechanism for precision impeller injection molding, characterized in that: The quick core-pulling mechanism for impeller injection molding comprises: a mounting seat (1), an outer wall in the middle of the top of the mounting seat (1) being rotatably connected to a driving seat (2), a slotted hole being provided on the outer wall at the top of the driving seat (2), a square slot (11) being provided on the outer wall at the top of the mounting seat (1), a circular slot (12) being provided inside the top of the mounting seat (1) located in the middle of the driving seat (2), a transmission mechanism being provided inside the square slot (11), and a core-pulling mechanism being provided on one side of the transmission mechanism; The transmission mechanism comprises a motor (3), wherein an outer wall of the motor (3) is fixedly connected to one side of an inner wall of the square groove (11); The core pulling mechanism comprises a mounting rod 1 (41), the outer wall of the bottom of the mounting rod 1 (41) being fixedly connected to the inner wall of the slotted hole.

2. A rapid core pulling mechanism for precision impeller injection molding according to claim 1, characterized in that: The output end of the motor (3) is fixedly connected to a rotating rod (31), and a driving wheel (32) is fixedly connected to the side of the rotating rod (31) close to the output end. A T-shaped groove (36) is provided on the outer wall of the top of the mounting seat (1), and T-shaped sliders (37) are slidably connected inside the two T-shaped grooves (36). The outer wall of the top of the right T-shaped slider (37) is fixedly connected to a gear seat 1 (33), and the outer wall of the top of the left T-shaped slider (37) is fixedly connected to a gear seat 2 (34). The outer wall of the bottom of the gear seat 1 (33) is slidably connected to the outer wall of the top of the mounting seat (1).

3. A rapid core pulling mechanism for precision impeller injection molding according to claim 1, characterized in that: The outer wall of the driving seat (2) is fixedly connected with a tooth one (35), and the outer wall of the tooth one (35) is meshingly connected with the outer wall of one side of the tooth seat one (33).

4. A rapid core pulling mechanism for precision impeller injection molding according to claim 2, characterized in that: The outer wall of the rotating rod (31) is rotatably connected to a fixed plate (73), the outer wall of the rotating rod (31) is movably connected to a half gear (7), the outer wall at the top of the half gear (7) is meshingly connected to the outer wall at the bottom of the second gear holder (34), the outer wall on one side of the half gear (7) is fixedly connected to a fixed rod (72), and the outer wall on one side of the half gear (7) is fixedly connected to a return spring (74).

5. A rapid core pulling mechanism for precision impeller injection molding according to claim 4, characterized in that: The interior of the return spring (74) is movably sleeved with the outer wall of the rotating rod (31); the outer wall of one end of the return spring (74) is fixedly connected to the outer wall of one side of the fixing plate (73); a slot is provided on the outer wall at the top of the fixing plate (73); the outer walls of both sides of the half gear (7) are fixedly connected with sliding rods; the outer walls of the sliding rods are slidably connected with sliding grooves (71); and the sliding grooves (71) are provided on both sides of the inner wall of the square groove (11).

6. A rapid core pulling mechanism for precision impeller injection molding according to claim 1, characterized in that: The outer wall of the mounting rod 1 (41) is rotatably connected to a connecting plate (4), six of the connecting plates (4) are provided with circular holes, the insides of the six circular holes are rotatably connected to mounting rods 2 (43), the outer walls of the bottoms of the six mounting rods 2 (43) are fixedly connected to arc-shaped forming plates (42), the outer walls of the six arc-shaped forming plates (42) are rotatably connected to mounting rods 4 (62), and the outer walls of the mounting rods 4 (62) are fixedly connected to a limiting wheel (63).

7. A rapid core-pulling mechanism for precision impeller injection molding according to claim 1, characterized in that: The driving seat (2) is fixedly connected to a mounting ring inside, a track groove (6) is formed on the outer wall at the top of the mounting ring, and the inner walls of the six track grooves (6) are fixedly connected to limit teeth (61), the outer wall on one side of the limit teeth (61) is meshedly connected to the outer wall of the limit wheel (63), and the inner wall of the mounting ring is fixedly connected to internal teeth (51).

8. A rapid core pulling mechanism for precision impeller injection molding according to claim 1, characterized in that: The circular groove (12) is rotatably connected to a driving sleeve (54) inside, a track groove (59) is provided on the outer wall of the driving sleeve (54), an upward column (510) is slidably connected inside the driving sleeve (54), a guide rod (511) is fixedly connected to the outer wall of the upward column (510), the outer wall of the guide rod (511) is slidably connected to the inside of the track groove (59), the outer wall of the top of the driving sleeve (54) is fixedly connected to a mounting plate (5), the outer wall of the top of the upward column (510) is fixedly connected to an ejection pin (53), an ejection groove (52) is provided on the outer wall of the top of the mounting plate (5), and the outer wall of the ejection pin (53) is slidably connected to the inside of the ejection groove (52).

9. A rapid core-pulling mechanism for precision impeller injection molding according to claim 8, characterized in that: The outer wall of the mounting plate (5) is provided with a plurality of mounting grooves (55), the interior of the mounting groove (55) is fixedly connected with a mounting rod three (56), the outer wall of the mounting rod three (56) is rotatably connected with a limit block (57), the outer wall of one side of the limit block (57) is fixedly connected with a push spring (58), the outer wall of one end of the push spring (58) is fixedly connected with the inner wall of the mounting groove (55), and the outer wall of the limit block (57) is meshingly connected with the outer wall of the inner tooth (51).

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