CN218429741U - Nut mould of hank tooth segmentation stripping cavity top cutting runner - Google Patents

Abstract

The utility model relates to a hank tooth segmentation takes off nut mould of chamber top cut runner, including threaded core, push rod, sliding part and drive assembly. The utility model discloses to hank the tooth process and carry out segmentation processing, first section hank tooth nut keeps relative static with the push pedal, only along with the screw core is rotatory, the nut part breaks away from screw core and push pedal and movable mould board separation, movable mould mold insert and screw core in the push pedal form the recess, the nut is located the recess, second section hank tooth screw core breaks away from the nut completely, the nut still is located the recess that first section hank tooth formed, but the runner congeals outside the material is located the mould, cutting mechanism cuts off behind the runner that the runner congeals material and nut separation, ejection mechanism ejection nut. The mold firstly partially ejects the nut, the runner congeals and is ejected out of the mold firstly, the nut is ejected out of the mold completely after the sprue is cut off, the sprue can be cut by the cutting mechanism when the runner congeals and is in the mold after the mold is opened, and a large amount of manpower resources are saved without manually cutting the sprue.

Description

Nut mould of hank tooth segmentation stripping cavity top cutting runner

Technical Field

The utility model relates to an injection mold field specifically, relates to a hank tooth segmentation takes off nut mould that chamber top was cut runner.

Background

With the development of the technology, the automation requirement on the production and processing of products is continuously improved, but at present, after the injection molding and demolding of nut products are carried out, the cutting mode of the sprue of the nut is still manually cut, the mode of manually cutting the sprue is low in efficiency, and the labor demand is high.

Currently, in order to solve the problem that the gate needs to be cut off manually, a cutting mechanism can be added into the mold, and the gate can be cut off by the cutting mechanism. The device for cutting off the inner gate of the existing injection mold is characterized by comprising a cutting structure and a mechanical valve, wherein the cutting mechanism is arranged in the mold and adopts an air cylinder as a driving element to drive a cutter to cut off the gate, the mechanical valve establishes a motion relation between an ejector plate and the cutting mechanism, when the ejector plate moves upwards to perform product demolding, the gate cutting mechanism moves and cuts off the gate, and the gate cutting-off work can be completed while the product demolding is performed. However, this device can only be used to cut off the condition that the gate is located outside the mold after the mold is opened, and for the nut mold in which the gate is still located inside the mold after the mold is opened, the device cannot eject the nut and then cut off the gate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the device among the above-mentioned prior art and can't be to the problem of cutting off the runner again after the nut that is located the die cavity is ejecting. The nut mold for the sectional stripping cavity top-cutting sprue of the twisted teeth can eject the nut part and then cut the sprue, and the nut can be ejected completely and separated from the mold after the sprue is cut.

In order to solve the technical problem, the utility model discloses a technical scheme is: a nut die for a twisted tooth segmented cavity-releasing top-cutting sprue comprises a fixed die plate assembly, a push plate, a movable die plate, a cutting mechanism, a movable die insert, an ejector plate, a die angle, a lower fixing plate, a threaded core, a push rod, a sliding part and a driving assembly. The fixed die plate assembly is located on the push plate, the movable die insert is fixedly connected with the push plate, the cutting mechanism is fixedly connected with the push plate, the push plate is connected with the movable die plate, the ejector plate is located in an inner cavity formed inside the die corner, and the die corner is fixedly connected with the lower fixed plate. The threaded core is in threaded connection with the push plate, a cavity is formed by gaps among the threaded core, the movable mold insert and the fixed mold plate assembly, and a runner is formed by a gap between the movable mold insert and the fixed mold plate assembly. The sliding part is used for connecting the push plate and the movable template, the push plate can slide on the sliding part, the limiting part is arranged on the sliding part and used for limiting the maximum distance between the push plate and the movable template when the push plate slides along the sliding part, the maximum distance is the diameter of a flow channel, the driving assembly is positioned in the inner cavity of the mold corner and used for driving the threaded mold core to rotate, and the push rod is positioned in the threaded mold core and is in sliding connection with the threaded mold core.

After the injection molding is finished, the fixed mold plate assembly is separated from the mold, but the nut and the runner condensate respectively stay on the cavity and the runner. And at the moment, the die performs tooth twisting, cutting and ejecting according to the set tooth twisting time length, cutting time length and ejecting time length. Firstly, the driving component drives the threaded core to start to rotate the threading, the threaded core can only rotate but cannot slide, the threaded core rotates the threading to drive the push plate to slide on the sliding part, the push plate is separated from the movable template, when the push plate reaches the limit position on the sliding part, the first-stage threading is finished, the push plate stops moving, the nut part is separated from the threaded core, but the push plate and the nut still keep relatively static. And then the thread core continues to rotate the twisting teeth, the nut on the thread core drives the runner congealing material in the runner to start to separate from the thread core, and when the nut and the runner congealing material completely separate from the thread core, the second-stage twisting teeth are finished. And finishing the first section of the twisting teeth and the second section of the twisting teeth in the tooth twisting time period, and starting cutting after the tooth twisting time period is finished. The first section of the twisting teeth enable the push plate to ascend, after the push plate reaches a limit position, the vertical height of the movable mold insert is higher than that of the threaded core to form a cavity, the nut is completely separated from the threaded core after the second section of the twisting teeth are finished, the nut is still in the cavity formed by the movable mold insert and the threaded core at the moment, and the runner condensate is located outside the mold. When the cutting mechanism starts to work, the cutting mechanism can cut off a sprue positioned outside the die, the runner condensate is separated from the nut, the cutting mechanism finishes cutting work in a cutting time period, and ejection is started after the cutting time period is finished. And when the ejection time is over, the ejector plate drives the push rod to eject the nut out of the mold, and the nut is separated from the mold. The threading process is conducted segmentation treatment, the first section of threading nut is partially separated from the threaded core, the push plate and the threaded core form a cavity, the second section of threading nut and the threaded core are completely separated, but the nut is still in the cavity formed by the first section of threading, the runner congeals and is completely separated from the mold at the moment, then the cutting mechanism cuts off the sprue, the runner congeals and is separated from the nut, and the ejection mechanism ejects the nut. The sprue can be cut by the cutting mechanism when the runner condensed materials are in the mold after the mold is opened, and a large amount of manpower resources are saved without manually cutting the sprue.

Preferably, the sliding part is a limit bolt, and the limit part is a head part of the limit bolt. The sliding part adopts spacing bolted connection movable mould board and push pedal, and connected mode is simple, and spacing bolt passes the push pedal direct with movable mould board fixed connection, and the push pedal can slide on spacing bolt, and spacing bolt head can directly prevent the push pedal infinitely to slide on spacing bolt as spacing portion, and the push pedal has the farthest distance with the movable mould board. The limiting bolt meets the functional requirements of the sliding part and is simple in structure, and the standard part can be directly used without secondary processing.

Preferably, the push plate is provided with a groove, the head of the limiting bolt is positioned in the groove, and the depth of the groove is the sum of the height of the limiting part and the diameter of the flow channel. Be equipped with the recess in the push pedal, spacing bolt head is located the recess, can shorten spacing bolt's size on the one hand, and movable mould board can not bump with spacing bolt during on the other hand compound die.

Preferably, the driving assembly comprises a gear, a gear set and a motor, the threaded core penetrates through the gear and is connected with the gear, the motor is connected with the gear through the gear set and is used for driving the gear to rotate, the gear rotates to drive the threaded core to rotate, and one end, far away from the movable template, of the gear is provided with a fixing portion for preventing the gear from sliding relatively on the threaded core. Compared with the mode of adopting the motor and the belt wheel, the mode of adopting the motor and the gear set to drive the gear has better driving effect and smaller space required by the driving assembly. The fixing part is used for fixing the gear on the threaded core and preventing the gear from sliding on the threaded core so that the gear and the threaded core are kept relatively static.

Preferably, a bearing is arranged in the movable template, and the threaded core penetrates through the bearing to be connected with the movable template. The threaded core is connected with the movable template through the bearing, when the threaded core rotates, the threaded core rotates inside the bearing, the bearing and the movable template do not move relatively, and compared with the threaded core directly connected with the movable template, the threaded core reduces friction with the movable template when rotating, and the threaded core is convenient to position in the movable template during installation.

Preferably, one end, far away from the ejector plate, of the push rod is horn-shaped, a runner ejector rod is further arranged on the ejector plate, and the runner ejector rod sequentially penetrates through the movable template, the push plate and the movable mold insert to be abutted to the runner. The contact end of the push rod and the nut is in a horn shape, so that the contact area of the push rod and the nut is increased, and the ejection effect of the nut is better. Runner ejector pin both ends congeal the material with the runner in ejector pin board and the mould die cavity respectively and contact, and when the ejector pin board was ejecting, the runner ejector pin congealed the ejecting mould of material with the runner, need not to congeal the material to carry out secondary sorting to the runner in the mould, simplified operation step.

Preferably, the cutting mechanism is fixedly mounted on the side surface of the push plate. The cutting mechanism is positioned outside the die but not inside the die, so that the probability of collision between the cutting mechanism and the movable template is reduced during die opening or die closing, and the service life of the cutting mechanism is prolonged. And the nut mould is a mould multicavity mould, and when cutting mechanism placed inside the nut mould, the whole volume grow of mould, to the drawing of patterns of mould, the operation degree of difficulty grow such as compound die.

Preferably, the inner cavity of the die corner is further provided with a signal acting part, the ejector plate is provided with a signal transmission part contacted with the signal acting part, the signal transmission part is separated from the signal acting part when the ejector plate is ejected, and the signal acting part transmits a signal to the cutting mechanism to drive the cutting mechanism to move. The ejection process is set into two sections in the mold injection molding machine, the first section is that the ejector pin plate is ejected to the signal transmission part to be separated from the signal action part, the signal action part controls the cutting mechanism to cut off the sprue, after the sprue is cut off by the cutting mechanism, the nut is separated from the runner, at the moment, the ejection of the second section is started, and the ejector pin plate drives the push rod and the runner ejector rod to eject the nut and the runner condensate completely out of the mold. The first section of ejection is used for separating the signal transmission part from the signal action part, the signal action part controls the cutting mechanism to work, the control cutting mechanism working mode has the advantages that the control end is positioned in the die instead of the cutting mechanism, and not too many structures are positioned on the push plate and the movable template, so that the structural layout of the die is more reasonable, the control process is simplified, and the action effect is more obvious.

Compared with the prior art, the beneficial effects of the utility model are that: the process that the nut is separated from the mold is segmented, the runner congeals and is completely located on the outer side of the mold after the teeth at two ends are twisted, the nut is still in the mold, at the moment, the first section of ejection is carried out, a signal is generated and sent to the cutting mechanism, the cutting mechanism cuts off a pouring gate, after the pouring gate is cut off, the runner congeals and is separated from the nut, then the second section of ejection is carried out, the second section of ejection completely ejects the nut to separate the nut from the mold, and the pouring gate located in the mold can be cut off. Still be equipped with the runner ejector pin, can congeal the material ejecting mould in the lump with the nut after the separation and runner, need not to congeal the material to the runner and carry out secondary letter sorting, the simplified operation step practices thrift manpower resources.

Drawings

Fig. 1 is the structure schematic diagram of the nut mold for the segmental stripping cavity top-cutting gate of the twisted tooth of the present invention.

Fig. 2 is a schematic view of the working state of the first segment of the nut mold for the gate of the present invention.

Fig. 3 is a schematic view of the working state of the second segment of the nut mold for the gate of the present invention.

Fig. 4 is a schematic view of the working state of the second section of the nut mold for the gate of the present invention.

Fig. 5 is a schematic structural diagram of the signal transmission unit and the signal operation unit according to the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

Fig. 1 to 3 show an embodiment of a nut mold for reaming a tooth, with a cavity removed and a sprue cut at the top, which includes a push plate 1, a movable mold plate 2, a cutting mechanism 3, a movable mold insert 4, a threaded core 5, a push rod 6, a sliding part 7, a driving assembly, an ejector plate 12, a mold corner 13, a lower fixed plate 14 and a fixed mold plate assembly 15. The fixed template assembly 15 is positioned on the push plate 1, the movable mold insert 4 is fixedly connected with the push plate 1, the cutting mechanism 3 is fixedly connected with the movable template 2, the push plate 1 is connected with the movable template 2, and the threaded core 5 is connected with the push plate 1. The gaps between the threaded core 5, the movable mold insert 4 and the fixed mold plate assembly 15 form a cavity, and the gap between the movable mold insert 4 and the fixed mold plate assembly 15 forms a runner. The sliding portion 7 is connected with the push plate 1 and the movable template 2, the push plate 1 can slide along the sliding portion 7, and the limiting portion 701 is arranged on the sliding portion 7 to limit the maximum distance between the push plate 1 and the movable template 2 when the push plate 1 slides along the sliding portion 7, and the maximum distance is the diameter of the flow channel. The ejector plate 12 is located in an inner cavity formed inside the die corner 13, the die corner 13 is fixedly connected with the lower fixing plate 14, the driving assembly is located in the inner cavity of the die corner 13 and used for driving the threaded core 5 to rotate, the push rod 6 is located in the threaded core 5, and the push rod 6 is in sliding connection with the threaded core 5.

The working process of the embodiment: after the injection molding is completed, the movable mold assembly 15 is separated from the mold, but the nut and the runner condensate respectively stay on the cavity and the runner. And the die performs tooth twisting, cutting and ejection according to the set tooth twisting time length, cutting time length and ejection time length. Firstly, the driving component drives the threaded mold core 5 to start to rotate the thread, the threaded mold core 5 rotates the thread to drive the push plate 1 to slide on the sliding part 7, the push plate 1 is separated from the movable mold plate 2, the nut is partially separated from the threaded mold core 5, when the push plate 1 reaches a limit position, the first section of thread twisting is finished, and the push plate 1 stops moving continuously. And then the threaded core 5 continues to rotate to form the thread, the nut on the threaded core 5 drives the runner condensate to start to separate from the push plate 5 and the movable mold insert 4, when the nut is completely separated from the threaded core 5, the runner condensate separates from the push plate 5 and the movable mold insert 4, and the second-stage thread forming is finished. And finishing the first section of the twisted teeth and the second section of the twisted teeth in the tooth twisting time period, and starting cutting work after the tooth twisting time period is finished. Because the first section of the twisted teeth enables the push plate 1 to ascend, after the push plate 1 reaches the limit position, the movable mold insert 4 on the push plate 1 and the threaded mold core 5 form a cavity, the nut is separated from the threaded mold core 5 after the second section of the twisted teeth is finished, the nut is still in the cavity formed by the movable mold insert 4 and the threaded mold core 5 at the moment, and the runner condensate is located outside the mold. When the cutting mechanism 3 starts to work, the cutting mechanism 3 cuts off a sprue positioned outside the mold, the runner condensate is separated from the nut, the cutting mechanism 3 finishes cutting work in a cutting time period, ejection is started after the cutting time period is finished, and when the ejection time is finished, the ejector plate 12 drives the push rod 6 to eject the nut from the mold, and the nut is separated from the mold.

The beneficial effects of this embodiment: the threading process is segmented, the nut and the push plate 1 are kept relatively static after the first section of threading, only the movable mold insert 4 and the threaded mold core 5 on the push plate 1 form a cavity, the nut and the threaded mold core 5 are completely separated after the second section of threading, but the nut is still in the cavity formed by the first section of threading, the runner is solidified and positioned outside the mold, then the sprue is cut off by the cutting mechanism 3, the runner is solidified and separated from the nut, and the nut is ejected by the ejection mechanism. When the runner congeals and is located inside the mould, the sprue can still be cut by the cutting mechanism 3 after mould opening, and a large amount of manpower resources are saved without manually cutting the sprue.

Example 2

An embodiment 2 of a nut mold for a twisted tooth segmented cavity-removing top-cutting gate is further defined in terms of the shape, positional relationship and the like of each part in the mold on the basis of the embodiment 1, as shown in fig. 1 to 3.

Specifically, the sliding part 7 is a limiting bolt, and the limiting part 701 is a limiting bolt head. The push plate 1 is provided with a groove 101, the head of the limiting bolt is positioned in the groove 101, and the depth of the groove 101 is the sum of the height of the limiting part and the diameter of the flow channel.

Specifically, drive assembly includes gear 8, gear train and motor, and threaded core 5 passes gear 8 and is connected with gear 8, and the motor links to each other through gear train and gear 8 and is used for drive gear 8 to rotate, and gear 8 rotates and drives threaded core 5 and rotate, and gear 8 keeps away from movable mould board 2 one end and is equipped with the fixed part and prevents gear 8 relative slip on threaded core 5. A bearing is arranged in the movable mould plate 2, and the threaded mould core 5 penetrates through the bearing to be connected with the movable mould plate 2. The gear set can be a plurality of gears or a single gear.

Specifically, one end of the push rod 6, which is far away from the ejector plate 12, is in a horn shape, the ejector plate 12 is further provided with a runner ejector rod 9, and the runner ejector rod 9 sequentially penetrates through the movable mould plate 2, the push plate 1 and the movable mould insert 4 to be abutted to the runner. The cutting mechanism 3 is fixedly arranged on the side surface of the push plate 1.

The beneficial effects of this embodiment: the sliding part 7 adopts a limiting bolt to connect the movable template 2 with the push plate 1, the limiting bolt meets the functional requirement of the sliding part 7 and has a simple structure, and a standard part can be directly used without secondary processing. The push plate 1 is provided with a groove 101, the head of the limiting bolt is positioned in the groove 101, on one hand, the size of the limiting bolt can be shortened, and on the other hand, the fixed die plate assembly 15 cannot collide with the limiting bolt 7 during die assembly. The driving effect of the gear 8 is better by adopting a motor and gear set mode, and the space required by a driving assembly is smaller. The fixing portion fixes the gear 8 to the screw core 5, and prevents the gear 8 from sliding on the screw core 5 and keeping it stationary relative to the screw core 5. The threaded core 5 is connected with the movable mould plate 2 through a bearing, when the threaded core 5 rotates, the threaded core 5 rotates in the bearing, the bearing does not move relative to the movable mould plate 2, friction between the threaded core 5 and the movable mould plate 2 during rotation is reduced, and the threaded core 5 is convenient to position in the movable mould plate 2 during installation. The contact end of the push rod 6 and the nut is horn-shaped, so that the contact area of the push rod 6 and the nut is increased, and the ejection effect of the nut is better. The two ends of the runner ejector rod 9 are respectively contacted with the ejector plate 12 and a runner in the mold, when the ejector plate 12 is ejected, the runner ejector rod 9 is used for ejecting the runner condensate out of the mold, secondary sorting of the runner condensate in the mold is not needed, and the operation steps are simplified. When the cutting mechanism 3 is positioned outside the mold, the probability of collision between the cutting mechanism 3 and the fixed mold plate assembly 15 is reduced during mold opening or mold closing, the service life of the cutting mechanism 3 is prolonged, the overall size of the mold is not increased, and the difficulty of operations such as mold demolding and mold closing is reduced.

Example 3

An embodiment of a nut mold for a threading tooth segmented cavity-stripping top-cutting gate is based on the embodiments 1 and 2, and as shown in fig. 1-5, the ejection process is further limited.

Specifically, the cavity of the die angle 13 is further provided with a signal acting part 10, the ejector plate 12 is provided with a signal transmission part 11 which is in contact with the signal acting part 10, the signal transmission part 11 is separated from the signal acting part 10 when the ejector plate 12 is ejected, and the signal acting part 10 transmits a signal to the cutting mechanism 3 to drive the cutting mechanism 3 to move after the signal transmission part 11 is separated from the signal acting part 10.

The workflow of this embodiment: the ejection duration is set into two sections in the injection molding machine, the first section is that the ejector plate 12 is ejected until the signal transmission part 11 is separated from the signal action part 10, the ejector plate 12 stops ejecting upwards, meanwhile, the signal action part 10 controls the cutting mechanism 3 to cut off the sprue, and the nut is separated from the runner condensate after the sprue is cut off. And then, starting ejection of a second section, wherein the ejector plate 12 drives the push rod 6 and the runner ejector rod 9 to continue to eject upwards during ejection of the second section until the ejection time of the second section is finished, and at the moment, the push rod 6 and the runner ejector rod 9 completely eject the nut and the runner congealed materials out of the mold.

The beneficial effects of this embodiment: the first section of ejection is used for separating the signal transmission part 11 from the signal action part 10, so that the signal action part 10 controls the cutting mechanism 3 to work, the control end of the working mode of the control cutting mechanism 3 is positioned in the die instead of the cutting mechanism 3, and not too many structures are positioned on the push plate 1 and the movable template 2, so that the structural layout of the die is more reasonable, the control process is simplified, and the action effect is more obvious.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This list is not intended to be exhaustive or exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The nut die comprises a fixed die plate assembly (15), a push plate (1), a movable die plate (2), a cutting mechanism (3), a movable die insert (4), an ejector plate (12), a die corner (13) and a lower fixing plate (14), wherein the fixed die plate assembly (15) is positioned on the push plate (1), the movable die insert (4) is fixedly connected with the push plate (1), the cutting mechanism (3) is fixedly connected with the push plate (1), the push plate (1) is connected with the movable die plate (2), the ejector plate (12) is positioned in an inner cavity formed inside the die corner (13), the die corner (13) is fixedly connected with the lower fixing plate (14), the nut die is characterized by further comprising a threaded core (5), a push rod (6), a sliding part (7) and a driving assembly, the threaded core (5) is in threaded connection with the push plate (1), a gap between the threaded core (5), the movable die insert (4) and the fixed die plate assembly (15) forms a gap between the movable die cavity assembly (4) and the movable die plate assembly (7), and the sliding cavity (1) is connected with the movable die plate (7) to form a runner (1), the sliding part (7) is provided with a limiting part (701) for limiting the maximum distance of separation of the push plate (1) and the movable template (2) to enable the maximum distance to be the diameter of the runner, the driving component is positioned in the inner cavity of the die angle (13) and used for driving the threaded core (5) to rotate, and the push rod (6) is positioned in the threaded core (5) and is in sliding connection with the threaded core (5).

2. The nut die for the reaming tooth segmented cavity-releasing top-cutting sprue according to claim 1, wherein the sliding portion (7) is a limiting bolt, and the limiting portion (701) is a head portion of the limiting bolt.

3. The nut die for the reaming tooth segmented cavity-removing top-cutting sprue according to claim 2, wherein a groove (101) is formed in the push plate (1), the head of the limiting bolt is located in the groove (101), and the depth of the groove (101) is the sum of the height of the limiting part (701) and the diameter of the runner.

4. The nut die for the reaming tooth segmented cavity-releasing top-cutting sprue according to claim 1, wherein the driving assembly comprises a gear (8), a gear set and a motor, the threaded core (5) penetrates through the gear (8) and is connected with the gear (8), the motor is connected with the gear (8) through the gear set to drive the gear (8) to rotate, and the gear (8) rotates to drive the threaded core (5) to rotate.

5. The nut die for the stranded tooth segmented cavity-releasing top-cutting sprue according to claim 4, characterized in that a fixing portion (801) is arranged at one end of the gear (8) far away from the movable die plate (2) to prevent the gear (8) from sliding relatively on the threaded core (5).

6. The nut die for the stranded-tooth segmented cavity-removing top-cutting sprue according to claim 1, wherein a bearing is arranged in the movable die plate (2), and the threaded core (5) penetrates through the bearing and is connected with the movable die plate (2).

7. The nut mould for the reaming tooth segmented cavity-releasing top-cutting sprue according to claim 1, characterized in that one end of the push rod (6) far away from the ejector plate (12) is horn-shaped.

8. The nut die for the stranded tooth segmented cavity-releasing top-cutting sprue according to claim 1, wherein a runner ejector rod (9) is further arranged on the ejector plate (12), and the runner ejector rod (9) is abutted to the runner after sequentially passing through the movable die plate (2), the push plate (1) and the movable die insert (4).

9. The nut die for the reaming tooth segmented cavity-releasing top-cutting sprue according to claim 1, characterized in that the cutting mechanism (3) is fixedly mounted on the side surface of the push plate (1).

10. The nut die for the reaming tooth segmented demolding and top cutting sprue according to claim 7, wherein a signal acting part (10) is arranged in an inner cavity of the die angle (13), a signal transmission part (11) which is in contact with the signal acting part (10) is arranged on the ejector plate (12), the signal transmission part (11) is separated from the signal acting part (10) when the ejector plate (12) is ejected, and the signal acting part (10) transmits a signal to the cutting mechanism (3) to drive the cutting mechanism (3) to move.

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