Rapid positioning device for high-precision hot runner mold

Abstract

The invention relates to the technical field of hot runner molds, in particular to a high-precision hot runner mold rapid positioning device which comprises an upper mold and a lower mold, a first positioning groove and a second positioning groove which correspond to each other are formed in the opposite faces of the upper mold and the lower mold respectively, and a plurality of positioning assemblies are symmetrically arranged on the inner periphery of the first positioning groove. An ejector rod corresponding to the positioning assembly is arranged in the second positioning groove, and the first positioning groove and the second positioning groove are each of an annular structure and are located in the dead center of the upper die and the dead center of the lower die correspondingly; the positioning assembly comprises a mounting rod, a positioning plate is arranged on the mounting rod and is an arc-shaped plate, and the top end of the positioning plate is matched with the inner walls of the top ends of the first positioning groove and the second positioning groove. The first annular positioning groove and the second annular positioning groove are formed in the upper mold body and the lower mold body correspondingly and matched with the arc-shaped positioning plate, so that the inner walls of the top ends of the first positioning groove and the second positioning groove are synchronously attached to and separated from the inner walls of the top ends of the first positioning groove and the second positioning groove, and the purpose of positioning the upper mold body and the lower mold body is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hot runner moulds, in particular to a high-precision hot runner mould rapid positioning device. Background Art

[0002] Hot runner molds are a special injection mold design that uses a heating device to keep the plastic melt in the runner (sprue) in a molten state. This means that after each injection cycle, there is no need to remove the solidified runner material because the material remains molten and can continue to be used in the next injection cycle.

[0003] The patent with publication number CN115194988A discloses a high-temperature mold positioning mechanism, including an upper mold and a lower mold. The upper mold is fixed with multiple positioning sleeves on one side close to the lower mold, and the lower mold is opened with multiple positioning holes on one side close to the upper mold. The positioning sleeves have rectangular openings on one end of the outer wall on both sides of the opposite sides, and a fixing pin is fixed on one end of the rectangular opening. The fixing pins are rotatably sleeved with extrusion blocks, and the positioning sleeves are provided with an extrusion expansion mechanism. It contacts and presses against the inner walls of the two opposite directions of the positioning holes through two rollers, and the two extrusion blocks have the same expansion distance, so that they can be automatically aligned.

[0004] In actual use, it was found that since it uses multiple ejector pins and positioning holes for positioning, high precision is required. If there is a deviation between one of the ejector pins and the positioning hole, it will affect the overall positioning. Moreover, during operation, the vertical positioning and lateral positioning cannot be achieved synchronously, which further increases the difficulty of positioning.

[0005] Based on this, the present invention discloses a high-precision hot runner mold rapid positioning device. Summary of the invention

[0006] In order to solve the problems raised in the background technology, the purpose of the present invention is to provide a high-precision hot runner mold rapid positioning device, which respectively opens a first circular positioning groove and a second positioning groove on the upper mold and the lower mold, and cooperates with an arc-shaped positioning plate that matches the first positioning groove and the second positioning groove to achieve synchronous fitting and separation with the top inner walls of the first positioning groove and the second positioning groove, thereby achieving the purpose of positioning the upper mold and the lower mold.

[0007] To achieve the above object, a high-precision hot runner mold rapid positioning device includes an upper mold and a lower mold; Wherein, the upper mold and the lower mold are provided with corresponding first positioning grooves and second positioning grooves on opposite sides thereof, a plurality of positioning components are arranged in the first positioning groove at equal intervals around the center thereof, and a push rod corresponding to the positioning component is arranged in the second positioning groove to trigger the positioning component; The first positioning groove and the second positioning groove are circular structures of the same size and are located at the center of the upper mold and the lower mold respectively; The positioning assembly includes a mounting rod, a positioning plate is arranged on the mounting rod, the positioning plate is an arc-shaped plate, and the radius of the outer surface of the positioning plate is equal to the radius of the outer side surface of the first positioning groove and the second positioning groove, so that after the upper mold and the lower mold are molded together, the outer surface of the positioning plate can fit with the outer side surface of the first positioning groove and the second positioning groove; The push rod drives the positioning plate to fit with the first positioning groove and the second positioning groove respectively to realize the positioning of the upper mold and the lower mold.

[0008] As a further improvement of the present technical solution, the mounting rod is slidably connected to a first slider, the first slider is fixedly connected to the positioning plate, a sliding rod is fixedly connected in the first positioning groove, and the sliding rod is arranged at the exact center of the mounting rod, the sliding rod passes through the mounting rod to form a triggering part, the bottom end of the first slider is fixedly connected to one end of a spring, and the other end of the spring is fixedly connected to the mounting rod.

[0009] As a further improvement of the technical solution, there is a distance between the positioning plate and the inner walls of the top ends of the first positioning groove and the second positioning groove in an initial state, and the spring is in a stretched state when the upper mold and the lower mold are in a closed mold state.

[0010] As a further improvement of the present technical solution, the triggering portion of the sliding rod is slidably connected to a second sliding block, and the second sliding block is fixedly connected to a top plate on a side away from the mounting rod, the top plate is slidably connected to the sliding rod, and the radius of the top plate is greater than the radius of the second sliding block, the top end of the second sliding block is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is slidably connected to one side of the first sliding block.

[0011] Preferably, a sliding cavity corresponding to the sliding rod is provided in the top rod, the radius of the sliding cavity is larger than the radius of the sliding rod and matches the top plate.

[0012] As a further improvement of the present technical solution, the length of the sliding cavity and the sliding distance of the top plate from the contact between the push rod and the top plate to the completion of the mold closing between the upper mold and the lower mold, driving the positioning plate to fit the inner walls of the top ends of the first positioning groove and the second positioning groove, are adapted.

[0013] Preferably, when the positioning plate is in an initial state, the triggering portion of the slide rod extends out of the top plate so that the slide cavity is docked with the slide rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this high-precision hot runner mold rapid positioning device, through the docking design of the sliding cavity and the sliding rod, in conjunction with the pushing effect of the ejector rod, during the mold closing process, the sliding cavity of the ejector rod is smoothly inserted into the sliding rod, and power transmission is achieved by pushing the ejector plate. This design ensures the stable docking between the ejector rod and the sliding rod, avoids positioning errors caused by inaccurate docking, and thus improves the accuracy and reliability of mold closing; secondly, multiple groups of symmetrical positioning components and ejector rods are set, and the multiple groups of positioning components are simultaneously pushed by the ejector rod during the mold closing process, driving the positioning plate to slide upward to achieve simultaneous fitting with the first positioning groove and the second positioning groove. The multiple groups of symmetrical designs ensure all-round synchronous positioning during mold closing, effectively reducing the deviation caused by multi-point positioning or asynchronous positioning.

[0015] 2. In this high-precision hot runner mold rapid positioning device, the tension of the spring is utilized. During the demolding process, the spring provides tension to automatically separate the positioning plate from the first positioning groove and the second positioning groove, thereby reducing the wear caused by lateral movement, that is, reducing the friction caused by the contact between the lower mold and the positioning plate during demolding; in addition, the first positioning groove and the second positioning groove of the circular ring structure are adopted, and the positioning groove of the circular ring structure matches the arc-shaped positioning plate, thereby realizing all-round fitting positioning, thereby improving the accuracy and stability of mold positioning, and at the same time increasing the contact area between the positioning plate and the positioning groove, dispersing the contact stress, reducing wear, and replacing the traditional complex structure of multiple positioning holes and ejector pins.

[0016] 3. In this high-precision hot runner mold rapid positioning device, the first slider and the second slider are linked by a connecting rod. The connecting rod converts the sliding of the second slider into the sliding of the first slider, thereby driving the positioning plate to rise. This design simplifies the transmission mechanism and improves the transmission efficiency, while ensuring the stability and synchronization of the positioning plate during the rising process; secondly, the top plate, the first slider and the second slider are connected by sliding. Even if these components are worn, it will not affect the positioning plate from reaching the specified position, and the sliding connection itself has less wear than extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the initial state of the upper mold of the present invention; Figure 3 It is a structural schematic diagram of the upper mold in the mold closing state of the present invention; Figure 4 It is a structural schematic diagram of the lower mold of the present invention; Figure 5 It is a structural schematic diagram of the positioning assembly of the present invention; Figure 6 It is a structural cross-sectional view of the upper mold of the present invention in an initial state; Figure 7 It is a structural cross-sectional view of the upper mold in the mold closing state of the present invention; Figure 8 for Figure 2 A magnified view of the structure at center A; Fig. 9 for Figure 4 A magnified view of the structure at B in the middle; Fig.10 for Figure 6 A magnified view of the structure at C in the middle; Fig.11 for Figure 7 Enlarged view of the structure at D in the middle.

[0018] The meaning of each number in the figure is: 1. Upper die; 2. Lower die; 3. First positioning groove; 4. Positioning assembly; 5. Second positioning groove; 6. Ejector rod; 7. Sliding cavity; 41. Mounting rod; 42. First slider; 43. Positioning plate; 44. Sliding rod; 45. Second slider; 46. Top plate; 47. Connecting rod; 48. Spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0020] The patent based on publication number CN115194988A proposes a high-temperature mold positioning mechanism which has multiple positioning holes and ejector pins and requires two positionings, which is prone to deviation.

[0021] To this end, the present invention provides a high-precision hot runner mold rapid positioning device, see Figure 1 As shown, it includes an upper die 1 and a lower die 2.

[0022] For details, see Figure 2-Figure 4 As shown, a corresponding first positioning groove 3 and a second positioning groove 5 are respectively provided on the opposite surfaces of the upper mold 1 and the lower mold 2, a plurality of positioning components 4 are arranged at equal intervals around the center of the first positioning groove 3, a push rod 6 corresponding to the positioning component 4 is arranged in the second positioning groove 5 to trigger the positioning component 4, wherein at least the corresponding positioning components 4 and push rods 6 are respectively arranged at three equal parts of the first positioning groove 3 and the second positioning groove 5 to ensure the accuracy of positioning.

[0023] The first positioning groove 3 and the second positioning groove 5 are both circular ring structures of the same size and are respectively located at the exact center of the upper mold 1 and the lower mold 2, ensuring that the center of the first positioning groove 3 and the second positioning groove 5 correspond to the exact center of the upper mold 1 and the lower mold 2. In this way, when the positioning component 4 positions the entire upper mold 1 and the lower mold 2 through the first positioning groove 3 and the second positioning groove 5, the complete alignment of the upper mold 1 and the lower mold 2 can be guaranteed.

[0024] like Figure 5 As shown, the positioning assembly 4 includes a mounting rod 41, and a positioning plate 43 is provided on the mounting rod 41. The positioning plate 43 is an arc-shaped plate, and the radius of the outer surface of the positioning plate 43 is equal to the radius of the inner and outer surfaces of the first positioning groove 3 and the second positioning groove 5, so that after the upper mold 1 and the lower mold 2 are molded together, the outer surface of the positioning plate 43 can be in contact with the inner and outer surfaces of the first positioning groove 3 and the second positioning groove 5 (i.e., Figure 3 and Fig.11 As shown in the figure, the top of the positioning plate 43 at the top matches the inner wall of the top of the first positioning groove 3 and the second positioning groove 5, and this position relationship is used in the following description). The push rod 6 drives the positioning plate 43 to fit with the first positioning groove 3 and the second positioning groove 5 respectively to realize the positioning of the upper mold 1 and the lower mold 2; in this way, it can be ensured that when several positioning plates 43 are simultaneously fitted with the first positioning groove 3 and the second positioning groove 5, the upper mold 1 and the lower mold 2 can be positioned so that they remain flush.

[0025] Among them, the arc-shaped positioning plate 43 matching the first positioning groove 3 and the second positioning groove 5 can, under the pulling force of the spring 48, immediately disengage the positioning plate 43 from the first positioning groove 3 and the second positioning groove 5 when the upper mold 1 and the lower mold 2 are demolded, without lateral movement and thus less wear. Secondly, under the triggering action of the push rod 6, the positioning plate 43 reaches the top of the mounting rod 41 and fits with the first positioning groove 3 and the second positioning groove 5 while the upper mold 1 and the lower mold 2 are closing the mold, further eliminating the positioning deviation caused by the wear of the positioning plate 43; secondly, even if the surface of the positioning plate 43 is slightly worn, as long as the upper surface of the rest of the positioning plate 43 can fit with the inner wall of the top of the first positioning groove 3 and the second positioning groove 5, it will not affect the overall positioning, further increasing the security of the positioning accuracy. This is the structural advantage of the first positioning groove 3 and the second positioning groove 5 being a circular ring structure and the arc-shaped positioning plate 43 matching it.

[0026] For further information, see Figure 5 and Figure 8As shown, the mounting rod 41 is slidably connected to the first slider 42, and the first slider 42 is fixedly connected to the positioning plate 43. A sliding rod 44 is fixedly connected in the first positioning groove 3, and the sliding rod 44 is arranged at the exact center of the mounting rod 41. The sliding rod 44 passes through the mounting rod 41 to form a triggering portion. The bottom end of the first slider 42 is fixedly connected to one end of a spring 48, and the other end of the spring 48 is fixedly connected to the mounting rod 41; the sliding rod 44 is arranged at the exact center of the mounting rod 41, including the mounting rod 41 which is also arranged at the exact center of the positioning plate 43. This is to ensure the stability of the positioning plate 43 when positioning the first positioning groove 3 and the second positioning groove 5, and to ensure the accuracy of the top rod 6 when triggering the positioning plate 43.

[0027] Among them, see Figure 8 and Figure 10-11 As shown, there is a distance between the positioning plate 43 and the top inner walls of the first positioning groove 3 and the second positioning groove 5 in the initial state, and the spring 48 is in a stretched state when the upper mold 1 and the lower mold 2 are in the mold closing state; the function of the spring 48 here is to pull the positioning plate 43 to move downward on the mounting rod 41 through the first slider 42 after the upper mold 1 and the lower mold 2 are demolded, so that a space distance is left between the positioning plate 43 and the top inner walls of the first positioning groove 3 and the second positioning groove 5, so that when the mold is closed next time, a fault tolerance space is left for the docking of the second positioning groove 5 on the lower mold 2 with the first positioning groove 3 on the upper mold 1, so that even if the lower mold 2 is slightly offset, the second positioning groove 5 on the lower mold 2 can still be pre-docked with the positioning plate 43, and then the positioning alignment of the upper mold 1 and the lower mold 2 is realized through the subsequent positioning process.

[0028] In addition, see Figure 5 and Figure 8 As shown, the trigger portion of the slide rod 44 is slidably connected to the second slide block 45, and the side of the second slide block 45 away from the mounting rod 41 is fixedly connected to a top plate 46, the top plate 46 is slidably connected to the slide rod 44, and the radius of the top plate 46 is greater than the radius of the second slide block 45, the top end of the second slide block 45 is rotatably connected to one end of the connecting rod 47, and the other end of the connecting rod 47 is slidably connected to one side of the first slide block 42.

[0029] Furthermore, see Fig.10As shown, a sliding cavity 7 corresponding to the sliding rod 44 is provided in the push rod 6, and the radius of the sliding cavity 7 is larger than the radius of the sliding rod 44 and matches the top plate 46; the top plate 46 is provided with a radius larger than the radius of the second sliding block 45, in order to facilitate the push rod 6 to push the second sliding block 45 more easily during the advancement process, and secondly to adapt it to the radius of the sliding cavity 7. The reason why the radius of the sliding cavity 7 is larger than that of the sliding rod 44 is to improve the fault tolerance when the sliding cavity 7 and the sliding rod 44 are connected. In this way, even if there is some positional deviation in the lower mold 2, it can be ensured that the push rod 6 is connected to the sliding rod 44 through the sliding cavity 7 larger than the sliding rod 44, and then push the top plate 46, triggering the displacement of the positioning plate 43, so that the positioning can be completed through the subsequent positioning process, prompting the lower mold 2 to be aligned with the upper mold 1.

[0030] For details, see Figure 8-Figure 11As shown, the length of the slide cavity 7 and the distance that the top plate 46 slides from the contact between the ejector rod 6 and the top plate 46 to the completion of the mold closing of the upper mold 1 and the lower mold 2, when the positioning plate 43 is driven to fit with the top inner walls of the first positioning groove 3 and the second positioning groove 5, are adapted; as mentioned above, when the upper mold 1 and the lower mold 2 are completed, a plurality of positioning plates 43 fit with the top inner walls of the first positioning groove 3 and the second positioning groove 5 at the same time, and this requires that the depth of the slide cavity 7, that is, the distance that the ejector rod 6 pushes the top plate 46 to move, must be the same as when the ejector rod 6 and the top plate 46 just come into contact, and then the top plate 46 moves on the slide rod 44 The first slider 42 is pushed upward, and then the first slider 42 pushes the second slider 45 through the connecting rod 47, and then pushes the positioning plate 43 to slide upward on the mounting rod 41. When the upper mold 1 and the lower mold 2 complete the mold closing, the positioning plate 43 is pushed to fit the top inner walls of the first positioning groove 3 and the second positioning groove 5 at the same time. In this process, the moving distance of the top plate 46 must match the depth of the sliding cavity 7, and the depth of the sliding cavity 7 must be greater than the moving distance of the top plate 46 in the above positioning process, because a certain gap will be left between the upper mold 1 and the lower mold 2 when the mold is closed; in general, as long as it is ensured that The length of the push rod 6 can prompt the push plate 46 to reach the specified position, that is, the position of the push plate 46 when the positioning plate 43 just fits the first positioning groove 3 and the second positioning groove 5 at the same time, and the sliding cavity 7 is greater than the distance moved by the push plate 46 during the positioning process, so that the upper mold 1 and the lower mold 2 can be positioned; even if the distance between the positioning plate 43 and the top of the first positioning groove 3 is different in the initial state, and the distance between the push plate 46 and the top of the push rod 6 is different, it does not affect the subsequent positioning. As mentioned above, the length of the push rod 6 can prompt the push plate 46 to reach the specified position; and During this process, even if there is some wear on the first slider 42, the second slider 45 and the top plate 46, it will not affect the top plate 46 being pushed to the specified position by the push rod 6. Therefore, the subsequent positioning work will not be affected by the wear. Moreover, the first slider 42, the second slider 45 and the top plate 46 are all slidingly connected, and the wear itself is minimal. In addition, even if several push rods 6 trigger the top plate 46 may not be synchronized, they will eventually reach the specified position at the same time, so that the positioning plate 43 is in contact with the first positioning groove 3 and the second positioning groove 5 at the same time, thus ensuring the synchronization of positioning.

[0031] In addition, Figure 8 and Fig. 9 As shown, when the positioning plate 43 is in the initial state, the triggering portion of the slide rod 44 extends out of the top plate 46 so that the slide cavity 7 and the slide rod 44 are connected.

[0032] Working principle: In the initial state, positioning component 4 is as follows Figure 2 and Figure 8As shown, under the pulling force of the spring 48, the positioning plate 43 is in a certain gap with the first positioning groove 3, and then the lower mold 2 moves toward the upper mold 1 to close the mold. In the first stage, the ejector 6 in the second positioning groove 5 on the lower mold 2 and its sliding cavity 7 begin to be inserted into the sliding rod 44, as shown in FIG. Figure 6 and Fig.10 As shown; in the second stage, the front end of the top rod 6 pushes the top plate 46 to push it to slide along the slide rod 44, thereby driving the second slider 45 to slide, and its sliding drives the first slider 42 to slide upward along the mounting rod 41 through the connecting rod 47, thereby driving the positioning plate 43 to slide upward; in the third stage, as shown Figure 7 and Fig.11 As shown, the top plate 46 is pushed to the specified position by the top rod 6, at which time the upper mold 1 and the lower mold 2 complete the mold closing, and the top plate 46 reaches the specified position, at which the positioning plate 43 is simultaneously fitted with the top inner wall of the first positioning groove 3 and the second positioning groove 5 through the connecting rod 47, and a plurality of symmetrically arranged positioning plates 43 jointly fit the upper mold 1 and the lower mold 2 through the fit with the first positioning groove 3 and the second positioning groove 5, and they are all annular structures, so under the joint action, the upper mold 1 and the lower mold 2 are synchronously positioned; when demolding, the positioning plate 43 slides up and down on the mounting rod 41 under its own gravity and the pulling force of the spring 48, and is separated from the first positioning groove 3 and the second positioning groove 5; and then when the mold is closed next time, the above steps are repeated again; The upper mold 1 and the lower mold 2 are positioned by respectively providing an annular first positioning groove 3 and a second positioning groove 5 on the upper mold 1 and the lower mold 2, and cooperating with an arc-shaped positioning plate 43 matching the first positioning groove 3 and the second positioning groove 5 to achieve synchronous fitting and separation with the top inner walls of the first positioning groove 3 and the second positioning groove 5, thereby achieving positioning of the upper mold 1 and the lower mold 2, thereby effectively solving the problem that a high-temperature mold positioning mechanism in the patent with publication number CN115194988A has multiple positioning holes and ejector pins and is positioned in multiple steps, which is prone to deviation, and the method of triggering positioning by extrusion is prone to wear and causes subsequent inaccuracy.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision hot runner mold rapid positioning device, comprising an upper mold (1) and a lower mold (2), characterized in that: A first positioning groove (3) and a second positioning groove (5) are respectively provided on opposite sides of the upper mold (1) and the lower mold (2); a plurality of positioning components (4) are arranged at equal intervals around the center of the first positioning groove (3); and a push rod (6) corresponding to the positioning component (4) is arranged in the second positioning groove (5) for triggering the positioning component (4); The first positioning groove (3) and the second positioning groove (5) are circular ring structures of the same size and are located at the exact center of the upper mold (1) and the lower mold (2) respectively; The positioning assembly (4) comprises a mounting rod (41), a positioning plate (43) being arranged on the mounting rod (41), the positioning plate (43) being an arc-shaped plate, and the radius of the outer surface of the positioning plate (43) being equal to the radius of the inner outer side surface of the first positioning groove (3) and the second positioning groove (5), so that after the upper mold (1) and the lower mold (2) are closed, the outer surface of the positioning plate (43) can be in contact with the inner outer side surface of the first positioning groove (3) and the second positioning groove (5); The push rod (6) drives the positioning plate (43) to fit the first positioning groove (3) and the second positioning groove (5) respectively to achieve positioning of the upper die (1) and the lower die (2).

2. The high-precision hot runner mold rapid positioning device according to claim 1, characterized in that: The mounting rod (41) is slidably connected to a first sliding block (42), the first sliding block (42) is fixedly connected to the positioning plate (43), a sliding rod (44) is fixedly connected in the first positioning groove (3), and the sliding rod (44) is arranged at the exact center of the mounting rod (41), and the sliding rod (44) passes through the mounting rod (41) to form a triggering portion, the bottom end of the first sliding block (42) is fixedly connected to one end of a spring (48), and the other end of the spring (48) is fixedly connected to the mounting rod (41).

3. The high-precision hot runner mold rapid positioning device according to claim 2, characterized in that: In an initial state, there is a distance between the positioning plate (43) and the inner walls of the top ends of the first positioning groove (3) and the second positioning groove (5), and the spring (48) is in a stretched state when the upper mold (1) and the lower mold (2) are in a mold closing state.

4. The high-precision hot runner mold rapid positioning device according to claim 3, characterized in that: The triggering portion of the slide bar (44) is slidably connected to a second slide bar (45); a side of the second slide bar (45) away from the mounting rod (41) is fixedly connected to a top plate (46); the top plate (46) is slidably connected to the slide bar (44); and a radius of the top plate (46) is greater than a radius of the second slide bar (45); a top end of the second slide bar (45) is rotatably connected to one end of a connecting rod (47); and the other end of the connecting rod (47) is slidably connected to one side of the first slide bar (42).

5. The high-precision hot runner mold rapid positioning device according to claim 4, characterized in that: A sliding cavity (7) corresponding to the sliding rod (44) is provided in the top rod (6); the radius of the sliding cavity (7) is greater than the radius of the sliding rod (44) and matches the top plate (46).

6. The high-precision hot runner mold rapid positioning device according to claim 5, characterized in that: The length of the sliding cavity (7) is adapted to the distance that the top plate (46) slides from the time when the top rod (6) and the top plate (46) come into contact until the upper mold (1) and the lower mold (2) complete the mold closing, and when the positioning plate (43) is driven to fit with the inner walls of the top ends of the first positioning groove (3) and the second positioning groove (5).

7. The high-precision hot runner mold rapid positioning device according to claim 6, characterized in that: When the positioning plate (43) is in an initial state, the trigger portion of the slide rod (44) extends outside the top plate (46) so that the slide cavity (7) and the slide rod (44) are butted against each other.

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