Accurate positioning injection mold

Abstract

The invention provides a precise positioning injection mold, and relates to the technical field of injection molds, the precise positioning injection mold comprises a first injection mold, a second injection mold and an inner positioning sliding block, the first injection mold is oppositely provided with the second injection mold, and the upper and lower parts of the two sides of the second injection mold are fixedly provided with side fixing frames; a first side rotating frame is arranged on the outer side face of the first injection mold in an annular array mode, side convex edge locks are fixed to the two sides of the first side rotating frame, and the center of the first side rotating frame is fixed to a rotating shaft of the first stepping motor. The first side rotating frame and the second side rotating frame are started to rotate by 180 degrees, conversion operation of a side concave edge lock and a side convex edge lock is completed, the abrasion speed is reduced through switching of the double side concave edge lock and the side convex edge lock, and accurate positioning after the second injection mold and the first injection mold are closed is guaranteed; the problems that the precision between the injection molds is reduced and gaps between the injection molds are increased due to aggravated abrasion of the positioning column and the side lock are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and particularly to an injection mold with precise positioning. Background Art

[0002] When an injection mold is used, the melted plastic material is injected into it, and the cooled and solidified plastic material forms the required shape structure in the cavity of the injection mold. The injection mold is fixed in position through positioning columns and side locks to ensure the precise positioning of the mold.

[0003] The existing positioning columns and side locks move with the opening and closing of the injection mold, and the positioning columns and side locks will also be continuously worn and consumed. The increased wear of the positioning columns and side locks will lead to a decrease in the precision between the injection molds, an increase in the gap between the injection molds, and the excess material of the injection parts will deposit and solidify into flakes in the gap between the injection molds, resulting in an increase in the loss of plastic material of the injection mold. Summary of the Invention

[0004] An embodiment of the present disclosure relates to an injection mold with precise positioning. The first side rotating frame and the second side rotating frame are started to rotate 180 degrees to complete the conversion operation of the side concave side lock and the side convex side lock. The switching of the double side concave side lock and the side convex side lock reduces the wear speed, ensures the sliding and inserting precision of the side concave side lock and the side convex side lock, ensures the precise positioning after the second injection mold and the first injection mold are closed, reduces the situation of inaccurate positioning caused by the wear of the side concave side lock and the side convex side lock, and avoids the situation where the excess material of the injection parts cools and solidifies into flakes in the frame gap between the second injection mold and the first injection mold.

[0005] In the first aspect of the present disclosure, an injection mold with precise positioning is provided, which specifically includes: a first injection mold, a second injection mold, a side fixing frame, and an inner positioning slider. The second injection mold is disposed opposite to the first injection mold. Side fixing frames are fixedly arranged on both the upper and lower sides of the second injection mold. An inner positioning slider is arranged inside the side fixing frame. Four rotating first side rotating frames are annularly arranged on the outer side surface of the first injection mold. Side convex side locks are fixedly arranged on both sides of the first side rotating frame. The center of the first side rotating frame is fixedly connected to the rotating shaft of the first stepping motor, and the first stepping motor is fixed on the side surface of the first injection mold. Side positioning columns are fixedly arranged at the four corners of the first injection mold, and a first induction column is fixedly arranged at the head end of the side positioning column.

[0006] In at least some embodiments, four rotating second side rotating frames are annularly arranged on the outer side surface of the second injection mold. Side concave side locks are fixedly arranged on both sides of the first side rotating frame. The center of the second side rotating frame is fixedly connected to the rotating shaft of the second stepping motor, and the second stepping motor is fixed on the side surface of the second injection mold.

[0007] In at least some embodiments, the concave-side locks and convex-side locks are arranged in a straight alignment. When the second injection mold and the first injection mold are closed, the concave-side locks and convex-side locks are inserted and slid. The first side-turning frame and the second side-turning frame rotate 180 degrees along the main shafts of the first stepping motor and the second stepping motor, completing the conversion operation of the concave-side locks and convex-side locks on both sides of the first side-turning frame and the second side-turning frame. The reciprocating switching between the two concave-side locks and convex-side locks reduces the wear rate and ensures the accurate positioning of the sliding insertion of the concave-side locks and convex-side locks.

[0008] In at least some embodiments, a middle receiving module is fixed in the middle of the side fixing frame. The front part of the side fixing frame is fixedly connected with a front fixing frame. Four middle T-shaped fixing frames are fixed on the four sides of the rear part of the front fixing frame. Side connecting sliding columns penetrate and slide on both sides of the tail of the middle T-shaped fixing frame. A side support spring is fixed at the head end of the side connecting sliding column, and the tail end of the side connecting sliding column is fixed to the rear sliding ring frame.

[0009] In at least some embodiments, the tail end of the side support spring is fixed to the rear sliding ring frame. Side connecting sliding columns are fixed on the upper, lower, left, and right sides of the rear sliding ring frame. The front circular groove of the middle receiving module is slidably inserted and connected with the first induction column. The middle receiving module and the first induction column are the receiving end and the induction end of a transmissive photoelectric sensor.

[0010] In at least some embodiments, a front connecting sliding column is fixed on the upper part of the head end of the inner positioning slider. An upper connecting sliding frame slides horizontally on the top of the inner positioning slider. A upper rectangular groove is fixed in the middle of the upper connecting sliding frame. Upper support rods are symmetrically rotated on both sides of the top of the upper connecting sliding frame. A lower through hole is vertically penetrated through the inner positioning slider. After the inner positioning slider is worn, the upper support rods support the inner positioning slider to continue to move closer to the side positioning column.

[0011] In at least some embodiments, a distance sensor is fixed at the upper part of the lower through hole. The distance sensor is located inside the upper rectangular groove. The front connecting sliding column is slidably connected with the front fixing frame. The upper support rods on both sides of the upper connecting sliding frame are respectively rotatably connected with the middle T-shaped fixing frame and the rear sliding ring frame.

[0012] In at least some embodiments, the inner positioning sliders are arranged in a circular array. The head end of the inner positioning slider is of an inclined surface structure. The circularly arrayed inner positioning sliders are aligned with the center of the middle receiving module. The side support spring supports the rear sliding ring frame to move closer to the middle T-shaped fixing frame. The circularly arrayed inner positioning sliders keep sliding and fitting with the outer sides of the side positioning column and the first induction column.

[0013] In at least some embodiments, when the inner positioning slider slides and fits with the side positioning column and the first induction column, the lower end of the lower through hole communicates with the outer side surfaces of the side positioning column and the first induction column. The lower end of the distance sensor is aligned with the outer side surfaces of the side positioning column and the first induction column. The distance sensors of the four inner positioning sliders detect the distances at four places of the side positioning column.

[0014] The present invention provides an injection mold with precise positioning, having the following beneficial effects: After the second injection mold and the first injection mold are opened each time, the first side rotating frame and the second side rotating frame start to rotate 180 degrees, completing the conversion operation of the side concave edge lock and the side convex edge lock. The switching between the double side concave edge lock and the side convex edge lock reduces the wear speed, ensures the sliding insertion accuracy of the side concave edge lock and the side convex edge lock, ensures the precise positioning after the second injection mold and the first injection mold are closed, reduces the situation of inaccurate positioning caused by the wear of the side concave edge lock and the side convex edge lock, and reduces the situation where the redundant material of the injection molded part deposits and solidifies into flakes in the increased frame amount due to the wear of the second injection mold and the first injection mold.

[0015] The inner positioning sliders in the annular array move synchronously to fit the side positioning posts on the inner side. The synchronous radial movement of the inner positioning sliders guides and holds the side positioning posts in the centered position, maintaining uniform sliding friction on the outer sides of the inner positioning sliders and the side positioning posts. At the same time, the upper support rod supports the side positioning posts to continue to fit with the side positioning posts after wear, avoiding the wear and damage of the second injection mold by the side positioning posts.

[0016] The distance sensor of the inner positioning slider detects the distance to the side positioning post, ensuring that the side positioning post is always in an accurate position and ensuring accuracy. After the inner positioning slider wears, the distance sensor moves closer to the side positioning post as the inner positioning slider moves, and the distance sensor realizes the detection of the wear condition of the inner positioning slider, detects the inner positioning sliders at different positions in the annular array, and performs timely maintenance on the uneven wear of the inner positioning slider caused by deformation, avoiding affecting the mold accuracy and avoiding the situation of increased frame amount after the side positioning post wears and the side positioning post wears and damages the second injection mold.

[0017] The middle receiving module and the first induction post are the receiving end and the induction end of a transmissive photoelectric sensor. The docking of the middle receiving module and the first induction post performs accuracy detection after the second injection mold and the first injection mold are closed, further ensuring the accuracy of the closure of the second injection mold and the first injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the drawings: Figure 1 A schematic diagram showing the overall structure of the present application is shown; Figure 2 A schematic diagram showing the structure of the first injection mold of the present application is shown; Figure 3Shows a schematic diagram of the second injection mold structure of the present application; Figure 4 Shows a schematic diagram of the side fixing frame structure of the present application; Figure 5 Shows a schematic diagram of the split state of the side fixing frame and the front fixing frame of the present application; Figure 6 Shows a schematic diagram of the rear slip ring frame of the present application; Figure 7 Shows a schematic diagram of the upper support rod of the present application; Figure 8 Shows a schematic diagram of the inner positioning slider of the present application; Figure 9 Shows a schematic diagram of the lower through hole of the present application; List of reference numerals 1. First injection mold; 101. First side rotating frame; 102. Side convex edge lock; 103. First stepping motor; 104. Side positioning column; 105. First induction column; 2. Second injection mold; 201. Second side rotating frame; 202. Side concave edge lock; 203. Second stepping motor; 3. Side fixing frame; 301. Middle receiving module; 302. Front fixing frame; 303. Middle T-shaped fixing frame; 304. Side connecting sliding column; 305. Side support spring; 306. Rear slip ring frame; 4. Inner positioning slider; 401. Front connecting sliding column; 402. Upper connecting sliding frame; 403. Upper rectangular groove; 404. Distance sensor; 405. Upper support rod; 406. Lower through hole. Detailed implementation manners

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1: Please refer to Figures 1 to 9 : The present invention provides an injection mold with precise positioning, comprising: a first injection mold 1, a second injection mold 2, side fixing frames 3 and inner positioning sliders 4. Four rotating first side rotating frames 101 are annularly arranged on the outer side surface of the first injection mold 1. Side convex edge locks 102 are fixed on both sides of the first side rotating frame 101. The center of the first side rotating frame 101 is fixed to the rotating shaft of a first stepping motor 103, and the first stepping motor 103 is fixed on the side surface of the first injection mold 1. Side positioning columns 104 are fixed at the four corners of the first injection mold 1. First induction columns 105 are fixed at the first ends of the side positioning columns 104. The first injection mold 1 is arranged opposite to the second injection mold 2. Four rotating second side rotating frames 201 are annularly arranged on the outer side surface of the second injection mold 2. Side concave edge locks 202 are fixed on both sides of the first side rotating frame 101. The center of the second side rotating frame 201 is fixed to the rotating shaft of a second stepping motor 203, and the second stepping motor 203 is fixed on the side surface of the second injection mold 2; Side fixing frames 3 are fixed on the upper and lower sides of both sides of the second injection mold 2. A middle receiving module 301 is fixed in the middle of the side fixing frame 3. The front part of the side fixing frame 3 is fixedly connected with a front fixing frame 302. Middle T-shaped fixing frames 303 are fixed on the four sides of the rear part of the front fixing frame 302. Side connecting sliding columns 304 penetrate and slide through both sides of the tail of the middle T-shaped fixing frame 303. A side supporting spring 305 is fixed at the first end of the side connecting sliding column 304. The tail end of the side connecting sliding column 304 is fixed to a rear sliding ring frame 306. The tail end of the side supporting spring 305 is fixed to the rear sliding ring frame 306. Side connecting sliding columns 304 are fixed on the upper, lower, left and right sides of the rear sliding ring frame 306. The front circular groove of the middle receiving module 301 is slidably inserted and connected with the first induction column 105. The middle receiving module 301 and the first induction column 105 are the receiving end and the induction end of a pair of radiation photoelectric sensors. The docking of the middle receiving module 301 and the first induction column 105 performs precision detection after the second injection mold 2 and the first injection mold 1 are closed. An inner positioning slider 4 is arranged inside the side fixing frame 3. A front connecting sliding column 401 is fixed on the upper part of the first end of the inner positioning slider 4. An upper connecting sliding frame 402 slides horizontally on the top of the inner positioning slider 4. An upper rectangular groove 403 is fixed in the middle of the upper connecting sliding frame 402. Upper support rods 405 are symmetrically rotated on both sides of the top of the upper connecting sliding frame 402. A lower through hole 406 is vertically penetrated through the inner positioning slider 4. After the inner positioning slider 4 is worn, the upper support rod 405 supports the inner positioning slider 4 to continue to move closer to the side positioning column 104. A distance sensor 404 is fixed at the upper part of the lower through hole 406. The distance sensor 404 is located inside the upper rectangular groove 403. The front connecting sliding column 401 is slidably connected with the front fixing frame 302. The upper support rods 405 on both sides of the upper connecting sliding frame 402 are respectively rotatably connected with the middle T-shaped fixing frame 303 and the rear sliding ring frame 306.

[0023] In the embodiments of the present disclosure, the side concave edge lock 202 and the side convex edge lock 102 are arranged in a straight alignment. When the second injection mold 2 and the first injection mold 1 are closed, the side concave edge lock 202 and the side convex edge lock 102 are inserted and slid. The first side rotating frame 101 and the second side rotating frame 201 rotate 180 degrees along the main shafts of the first stepping motor 103 and the second stepping motor 203, completing the conversion operation of the side concave edge lock 202 and the side convex edge lock 102 on both sides of the first side rotating frame 101 and the second side rotating frame 201. The reciprocating switching of the two side concave edge locks 202 and the side convex edge locks 102 reduces the wear rate, ensures the precise positioning of the sliding insertion of the side concave edge lock 202 and the side convex edge lock 102, and ensures the precision after the second injection mold 2 and the first injection mold 1 are closed.

[0024] In the embodiments of the present disclosure, the inner positioning sliders 4 are arranged in a circular array. The head end of the inner positioning slider 4 is of an inclined surface structure. The centers of the inner positioning sliders 4 in the circular array are aligned with the center of the middle receiving module 301. The side support spring 305 supports the rear sliding ring frame 306 to move closer to the middle T-shaped fixing frame 303. The inner positioning sliders 4 in the circular array maintain sliding contact with the outer sides of the side positioning columns 104 and the first induction columns 105. The synchronous movement of the four inner positioning sliders 4 around the center in a radial manner guides and holds the side positioning columns 104 and the first induction columns 105 in the centered position.

[0025] In the embodiments of the present disclosure, when the inner positioning slider 4 is in sliding contact with the side positioning column 104 and the first induction column 105, the lower end of the lower through hole 406 communicates with the outer side surfaces of the side positioning column 104 and the first induction column 105. The lower end of the distance sensor 404 is aligned with the outer side surfaces of the side positioning column 104 and the first induction column 105. The distance sensors 404 of the four inner positioning sliders 4 perform distance detection on four locations of the side positioning column 104, detect and verify that the side positioning column 104 is in the central position, ensure the precise position of the side positioning column 104, and ensure the precise positioning between the second injection mold 2 and the first injection mold 1.

[0026] In the second embodiment, based on the first embodiment, the second side rotating frame 201 and the second stepping motor 203 are not provided. The second injection mold 2 only fixes one side concave edge lock 202. The two side convex edge locks 102 take turns to perform sliding insertion with the side concave edge lock 202 as the first side rotating frame 101 is switched, reducing the side convex edge lock 102 and the side concave edge lock 202 and extending the service life. At the same time, the setting of the second side rotating frame 201 and the second stepping motor 203 is omitted, which can reduce the cost.

[0027] Working principle of the first embodiment: The second injection mold 2 and the first injection mold 1 are respectively fixedly connected to the hydraulic moving device. The second injection mold 2 and the first injection mold 1 move linearly to close or open. The centers of the second injection mold 2 and the first injection mold 1 are the main bodies of the injection mold and are provided with relevant injection pipelines. After the second injection mold 2 and the first injection mold 1 are closed, injection molding is carried out. After the second injection mold 2 and the first injection mold 1 are separated, the injection molded products are removed. After each opening of the second injection mold 2 and the first injection mold 1, the first stepping motor 103 and the second stepping motor 203 are both started to control the main shaft to rotate 180 degrees. The first side turning frame 101 and the second side turning frame 201 rotate 180 degrees along with the main shafts of the first stepping motor 103 and the second stepping motor 203, completing the conversion operation of the side concave edge locks 202 and the side convex edge locks 102 on both sides of the first side turning frame 101 and the second side turning frame 201. The double side concave edge locks 202 and side convex edge locks 102 switch back and forth to reduce the wear speed, ensure the sliding and inserting accuracy of the side concave edge locks 202 and the side convex edge locks 102, ensure the precise positioning after the second injection mold 2 and the first injection mold 1 are closed, the side concave edge locks 202 and the side convex edge locks 102 slide and insert, reduce the accuracy change of the second injection mold 2 and the first injection mold 1 caused by injection heating, reduce the inaccurate positioning caused by the increased gap after the side concave edge locks 202 and the side convex edge locks 102 are worn, the frame amount of the second injection mold 2 and the first injection mold 1 increases after injection heating, and reduce the situation that the excess material of the injection parts deposits into sheets in the frame amount of the second injection mold 2 and the first injection mold 1; During the closing process of the second injection mold 2 and the first injection mold 1, the side positioning columns 104 synchronously pass through the front fixing frame 302. The outer sides and the inner positioning slider 4 of the side positioning columns 104 and the first induction columns 105 slide in contact. The side support spring 305 supports the side connecting slide column 304 to move towards the side of the front fixing frame 302. The side connecting slide column 304 and the rear sliding ring frame 306 move synchronously. The side connecting slide column 304 drives the upper support rod 405 to move. The upper support rod 405 supports the annular array of upper connecting slide frames 402 and the inner positioning slider 4 to move synchronously and fit the inner side of the side positioning columns 104 and the first induction columns 105. The four inner positioning sliders 4 move synchronously in a radial pattern around the center to guide and hold the side positioning columns 104 and the first induction columns 105 in the centered position, maintaining uniform sliding friction on the outer sides of the inner positioning slider 4 and the side positioning columns 104. The bottom of the inner positioning slider 4 is covered with a rubber material and contacts the side positioning columns 104. The inner positioning slider 4 with the bottom rubber material reduces the external wear of the side positioning columns 104. At the same time, the upper support rod 405 supports the side positioning columns 104 to continue to fit with the side positioning columns 104 after wear, avoiding the increase in the frame amount after the side positioning columns 104 are worn and the situation of the side positioning columns 104 damaging the second injection mold 2; After the second injection mold 2 and the first injection mold 1 are closed, the middle receiving module 301 and the first induction post 105 are slidably inserted and docked. The slot of the middle receiving module 301 is larger than the diameter of the first induction post 105. The middle receiving module 301 and the first induction post 105 are the receiving end and the induction end of a transmissive photoelectric sensor. The docking of the middle receiving module 301 and the first induction post 105 performs precision detection after the second injection mold 2 and the first injection mold 1 are closed, further ensuring the accuracy of the closure of the second injection mold 2 and the first injection mold 1; The distance sensors 404 of the four inner positioning sliders 4 perform distance detection on four locations of the side positioning posts 104 to detect and verify that the side positioning posts 104 are in the central position, ensuring that the side positioning posts 104 are always in the precise position and ensuring accuracy. After the inner positioning sliders 4 are worn, the upper support rods 405 support the inner positioning sliders 4 and will continue to move closer to the side positioning posts 104. The distance sensors 404 move closer to the side positioning posts 104 as the inner positioning sliders 4 move. The distance sensors 404 detect the wear thickness and other conditions of the inner positioning sliders 4 themselves, and perform thickness detection on the inner positioning sliders 4 at different positions in the annular array, and perform timely maintenance on the uneven wear of the inner positioning sliders 4 caused by deformation or the situation where the side positioning posts 104 are not in the central position, avoiding affecting the mold accuracy.

[0028] In this article, the following points need to be noted: 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0029] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An injection mold with precise positioning, comprising: The first injection mold (1), the second injection mold (2), the side fixing frame (3) and the inner positioning slider (4); characterized in that the second injection mold (2) is arranged opposite to the first injection mold (1), side fixing frames (3) are fixedly arranged on both the upper and lower sides of the second injection mold (2), inner positioning sliders (4) are arranged inside the side fixing frames (3), the outer side surface of the first injection mold (1) is annularly arrayed with rotating first side rotating frames (101), side convex edge locks (102) are fixedly arranged on both sides of the first side rotating frame (101), the center of the first side rotating frame (101) is fixedly connected to the rotating shaft of a first stepping motor (103), the first stepping motor (103) is fixed on the side surface of the first injection mold (1), side positioning columns (104) are fixedly arranged at the four corners of the first injection mold (1), and a first induction column (105) is fixedly arranged at the head end of the side positioning column (104).

2. The injection mold with precise positioning according to claim 1, characterized in that the outer side surface of the second injection mold (2) is annularly arrayed with rotating second side rotating frames (201), side concave edge locks (202) are fixedly arranged on both sides of the first side rotating frame (101), the center of the second side rotating frame (201) is fixedly connected to the rotating shaft of a second stepping motor (203), and the second stepping motor (203) is fixed on the side surface of the second injection mold (2).

3. The injection mold with precise positioning according to claim 2, characterized in that the side concave edge locks (202) and the side convex edge locks (102) are arranged in a straight alignment, and when the second injection mold (2) and the first injection mold (1) are closed, the side concave edge locks (202) and the side convex edge locks (102) are slidably inserted.

4. The injection mold with precise positioning according to claim 1, characterized in that a middle receiving module (301) is fixedly arranged in the middle of the side fixing frame (3), a front fixing frame (302) is fixedly connected to the front of the side fixing frame (3), middle T-shaped fixing frames (303) are fixedly arranged on the four sides of the rear part of the front fixing frame (302), side connecting sliding columns (304) penetrate and slide on both sides of the tail of the middle T-shaped fixing frame (303), a side support spring (305) is fixedly arranged at the head end of the side connecting sliding column (304), and the tail end of the side connecting sliding column (304) is fixedly connected to a rear sliding ring frame (306).

5. The injection mold with precise positioning according to claim 4, characterized in that the tail end of the side support spring (305) is fixedly connected to the rear sliding ring frame (306), side connecting sliding columns (304) are fixedly arranged on the upper, lower, left and right sides of the rear sliding ring frame (306), and the front circular groove of the middle receiving module (301) is slidably inserted and connected to the first induction column (105).

6. The injection mold with precise positioning according to claim 4, characterized in that The upper part of the head end of the inner positioning slider (4) is fixedly provided with a front connecting slide post (401). A connecting slide frame (402) slides horizontally on the top of the inner positioning slider (4). A rectangular groove (403) is fixedly provided in the middle of the upper connecting slide frame (402). Upper support rods (405) are symmetrically rotated on both sides of the top of the upper connecting slide frame (402). A lower through hole (406) is vertically and penetratingly formed in the inner positioning slider (4).

7. The precision positioning injection mold according to claim 6, characterized in that A distance sensor (404) is fixedly provided at the upper part of the lower through hole (406). The distance sensor (404) is located inside the upper rectangular groove (403). The front connecting slide post (401) is slidably connected to the front fixing frame (302). The upper support rods (405) on both sides of the upper connecting slide frame (402) are respectively rotatably connected to the middle T-shaped fixing frame (303) and the rear slide ring frame (306).

8. The precision positioning injection mold according to claim 7, characterized in that The inner positioning sliders (4) are arranged in a circular array. The centers of the inner positioning sliders (4) in the circular array are aligned with the center of the middle receiving module (301). The side support spring (305) supports the rear slide ring frame (306) to move close to the middle T-shaped fixing frame (303). The inner positioning sliders (4) in the circular array are in sliding fit with the outer sides of the side positioning columns (104) and the first induction columns (105).

9. The precision positioning injection mold according to claim 8, characterized in that When the inner positioning slider (4) is in sliding fit with the side positioning column (104) and the first induction column (105), the lower end of the lower through hole (406) communicates with the outer sides of the side positioning column (104) and the first induction column (105).

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