High-precision mold locking mechanism of injection molding machine

Abstract

The invention discloses a high-precision injection molding machine mold locking mechanism which comprises a head plate, a mold locking middle plate, a tail plate assembly and a connecting column, and the connecting column is connected with the head plate and the tail plate and penetrates through the mold locking middle plate to enable the mold locking middle plate to ascend and descend. The head plate is provided with a quick cylinder group, and a bottom nut is matched with the connecting column and fastened by a pressing plate. The tail plate comprises a high-pressure cylinder shaft, an auxiliary cylinder component, a cohesion set, an ejector pin cylinder component and the like. The mechanism has remarkable beneficial effects and stable structure, and the components are reasonably arranged to ensure the stability of the mold and ensure the injection molding precision; the rapid cylinder group assists the mold opening and closing, the ejector pin cylinder and the like to work cooperatively to improve the production efficiency; the cohesion group component tightly holds the mold, and the inductive switch monitors and protects the mold; the sliding foot component of the second mold locking plate reduces friction, is convenient to operate and maintain due to the modular design, can position faults, rapidly maintain and replace, reduce shutdown and guarantee continuous production, is suitable for injection molding operation of a large-scale injection molding machine, and promotes industry development.

Description

Technical Field

[0001] The invention belongs to the field of large injection molding machine locking die set, and in particular relates to a high-precision injection molding machine locking die set mechanism. Background Art

[0002] In the field of large injection molding machines, the performance of the die-locking mechanism plays a key role in the quality of injection molding products, production efficiency, and the stability and reliability of the equipment. With the growing demand for plastic products, especially in the automotive, home appliance, aerospace and other industries, the demand for large and complex injection molded parts is increasing, which puts higher requirements on the die-locking mechanism of large injection molding machines.

[0003] The traditional large-scale injection molding machine locking mold group mechanism has some shortcomings. For example, the structural design is not optimized enough, resulting in poor overall stability. During the high-pressure injection molding process, the mold is prone to loosening or offset, affecting the dimensional accuracy and appearance quality of the product. At the same time, the traditional mechanism has a slow mold opening and closing speed, which cannot meet the needs of modern efficient production and reduces production efficiency. In addition, the mold protection measures are not perfect enough, and the mold is easily damaged during the frequent opening and closing process, which increases production costs. Moreover, the convenience of operation and maintenance needs to be improved. The complex structure makes the equipment commissioning, repair and maintenance work more cumbersome, increasing downtime and maintenance costs. Summary of the invention

[0004] The purpose of the present invention is to provide a high-precision injection molding machine locking die assembly mechanism, aiming to solve the problems existing in the background technology. To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A high-precision mold locking mechanism for an injection molding machine comprises a head plate assembly, a mold locking middle plate, a tail plate assembly and connecting columns. Connecting columns are arranged at the corners of the head plate assembly, and the connecting columns penetrate the mold locking middle plate and connect with the tail plate assembly. The mold locking middle plate moves up and down between the head plate assembly and the tail assembly through the tail plate assembly.

[0006] Preferably, a quick cylinder group is provided on the left and right sides of the head plate assembly, and the cylinder shaft of the quick cylinder group is connected to the tail plate assembly by screws.

[0007] Preferably, the head plate assembly includes a locking head plate, nuts and a nut pressing plate. A plurality of nuts are installed at the bottom of the locking head plate. The nuts match the connecting columns. A nut pressing plate is installed at the bottom of the nuts. The connecting columns penetrate the locking head plate and the nuts and are connected to the nut pressing plate in sequence.

[0008] Preferably, the tail plate assembly includes a locking tail plate, a high-pressure cylinder shaft component, a high-pressure sub-cylinder component, a first embracing group component, a second embracing group component and an ejector cylinder component. A high-pressure cylinder shaft component is arranged at the bottom center position of the locking tail, and high-pressure sub-cylinder components are arranged symmetrically in pairs on the outside of the high-pressure cylinder shaft component. The ejector cylinder component is installed at the top center position of the locking tail plate, and the first embracing group component and the second embracing group component are arranged on the left and right sides of the ejector cylinder component. The first embracing group component and the second embracing group component have the same structure. The cylinder shaft of the ejector cylinder component passes through the locking tail plate and is connected to the high-pressure cylinder shaft component. The high-pressure sub-cylinder is used to assist the high-pressure cylinder shaft component.

[0009] Preferably, the high-pressure cylinder component includes a high-pressure cylinder shaft bottom, a high-pressure cylinder shaft and a high-pressure cylinder flange. The high-pressure cylinder shaft is installed at the bottom of the clamping tail through the high-pressure cylinder shaft bottom, and a high-pressure rod flange is arranged on the outer side of the high-pressure cylinder shaft.

[0010] Preferably, the ejector cylinder component includes an ejector cylinder, an ejector cylinder fixing plate, an ejector push plate and an ejector guide rod. The ejector cylinder is installed on the top of the locking tail plate through the ejector cylinder fixing plate. The cylinder shaft of the ejector cylinder passes through the locking tail plate and is arranged inside the bottom of the high-pressure cylinder. The cylinder shaft of the ejector cylinder is installed with an ejector push plate, and the ejector guide rod is installed on the ejector push plate. The ejector guide rod is connected to the middle plate.

[0011] Preferably, the high-pressure auxiliary cylinder component includes a high-pressure auxiliary cylinder shaft bottom, a high-pressure auxiliary cylinder shaft and a high-pressure auxiliary cylinder flange. The high-pressure auxiliary cylinder shaft is installed at the bottom of the clamping tail through the high-pressure auxiliary cylinder shaft bottom, and a high-pressure auxiliary cylinder flange is arranged on the outer side of the high-pressure auxiliary cylinder shaft.

[0012] Preferably, the first embracing component comprises a first embracing component, a second embracing component, an embracing cylinder group, an embracing machine connecting rod, an embracing guide rod, an inductive switch transmitter and an inductive switch receiver. The first embracing component is arranged at the left corner of the clamping tail plate, and the second embracing component is arranged at the right corner of the clamping tail plate. The first embracing component and the second embracing component are symmetrically arranged. The first embracing component and the second embracing component are connected through the embracing cylinder group and the embracing machine connecting rod. A plurality of embracing guide rods are connected to the first embracing component and the second embracing component. An inductive switch transmitter and an inductive switch receiver are installed on the first embracing component. The first embracing component and the second embracing component have the same structure.

[0013] Preferably, the first engaging component includes a first engaging nut component, a second engaging nut component, an engaging pad and an engaging nut guide block. The engaging pad is installed on the locking mold tail plate. Engaging nut guide blocks are arranged on the inner and outer sides of the engaging pad. The first and second engaging nut components are symmetrically installed inside the engaging pad. The engaging nut guide blocks are slidingly connected to the first and second engaging nut components. The induction switch transmitter is installed on the top of the first engaging nut component, the induction switch receiver is installed on the top of the second engaging nut component, and the engaging guide rod passes through the second engaging nut component and is connected to the second engaging nut component.

[0014] Preferably, the tail plate assembly and the locking middle plate are also provided with a locking second plate sliding foot component, the locking second plate sliding foot component includes a slider, a slide rail, a locking second plate sliding foot and a pulley, a plurality of sliders are fixed to the left side of the locking middle plate, the locking second plate sliding foot is connected to the slider through the slide rail, and a plurality of pulleys are arranged inside the locking second plate sliding foot.

[0015] The beneficial effects of the present invention are as follows: in terms of structure, the overall design is reasonable, and a stable frame is formed by the head plate assembly, the mold locking middle plate, the tail plate assembly and the connecting column. The connecting column penetrates the mold locking middle plate to connect the head plate and the tail plate assembly, which can withstand huge pressure to ensure the stability of the mold. The nuts at the bottom of the mold locking head plate in the head plate assembly are accurately matched with the connecting column and fastened by the nut pressure plate. The various components of the tail plate assembly are reasonably arranged and connected, which jointly ensure the injection molding accuracy. In terms of production efficiency, the fast cylinder groups on both sides of the head plate assembly are connected to the tail plate assembly by screws, and the cylinder shaft thereof is telescopically driven to drive the mold locking middle plate to quickly lift and lower to realize fast mold opening and closing, greatly shortening the injection molding cycle. At the same time, the ejector cylinder components and other components in the tail plate assembly work in coordination with other components to reduce auxiliary time and improve the overall production efficiency. For mold protection, the first and second holding groups in the tail plate assembly are driven by the holding cylinder group and the holding machine connecting rod, so that the first holding component and the second holding component cooperate to hold the mold tightly, prevent displacement loosening, reduce wear, and the induction switch transmitter and receiver monitor the holding state in real time, and can provide timely feedback in case of abnormality for easy adjustment. In terms of operation and maintenance, the sliding foot assembly of the second clamping plate reduces the lifting friction of the clamping middle plate through the cooperation of sliders, slide rails and pulleys, reduces energy consumption and facilitates operation and daily inspection, maintenance and cleaning. The modular design of the entire mechanism makes the components and parts structure independent and functional, which is convenient for fault location, maintenance and replacement, reduces downtime and ensures production continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the structure of a head assembly provided in an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the structure of a tail assembly provided in an embodiment of the present invention;

[0019] Figure 4 This is a schematic structural diagram of a high-pressure cylinder shaft component according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic structural diagram of a high-pressure auxiliary cylinder component according to an embodiment of the present invention;

[0021] Figure 6 It is a schematic structural diagram of the first embracing assembly component according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic structural diagram of a first embracing component according to an embodiment of the present invention;

[0023] Figure 8 It is a schematic diagram of the structure of the ejector cylinder component according to an embodiment of the present invention;

[0024] Fig. 9 It is a schematic diagram of the structure of the second-plate sliding foot component of the clamping mold according to an embodiment of the present invention.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Tail plate assembly; 11. Clamping tail plate; 12. Nut; 13. Nut pressing plate; 2. Clamping middle plate; 3. Head plate assembly; 31. Clamping head plate; 32. High-pressure cylinder shaft component; 321. High-pressure cylinder shaft bottom; 322. High-pressure cylinder shaft; 323. High-pressure cylinder flange; 33. High-pressure auxiliary cylinder component; 331. High-pressure auxiliary cylinder shaft bottom; 332. High-pressure auxiliary cylinder shaft; 333. High-pressure auxiliary cylinder flange; 34. First clasping assembly component; 341. First clasping component; 3411. First clasping nut component; 3412. Second clasping nut component; 3413. clasping pad Plate; 3414, engagement nut guide block; 342, second engagement component; 343, engagement cylinder group; 344, engagement machine connecting rod; 345, engagement guide rod; 346, induction switch transmitter; 347, induction switch receiver; 35, second engagement group component; 36, ejector cylinder component; 361, ejector cylinder; 362, ejector cylinder fixing plate; 363, ejector push plate; 364, ejector guide rod; 4, connecting column; 5, fast cylinder group; 6, clamping second plate slide foot component; 61, slider; 62, slide rail; 63, clamping second plate slide foot; 64, pulley. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] like Figures 1 to 9 As shown, an embodiment of the present invention provides a high-precision mold locking mechanism for an injection molding machine, including a head plate assembly 3, a mold locking middle plate 2, a tail plate assembly 1 and connecting columns 4. Connecting columns 4 are arranged at the corners of the head plate assembly 3, and the connecting columns 4 penetrate the mold locking middle plate 2 and are connected to the tail plate assembly 1. The mold locking middle plate 2 is lifted and lowered between the head plate assembly 3 and the tail assembly through the tail plate assembly 1.

[0032] In the embodiment, the left and right sides of the head plate assembly 3 are provided with fast cylinder groups 5 , and the cylinder shafts of the fast cylinder groups 5 are connected to the tail plate assembly 1 through screws.

[0033] In the embodiment, the head plate assembly 3 includes a locking head plate 31, nuts 12 and a nut pressing plate 13. A plurality of nuts 12 are installed at the bottom of the locking head plate 31. The nuts 12 match the connecting column 4. A nut pressing plate 13 is installed at the bottom of the nuts 12. The connecting column 4 passes through the locking head plate 31 and the nuts 12 and is connected to the nut pressing plate 13 in sequence.

[0034] In the embodiment, the tail plate assembly 1 includes a locking tail plate 11, a high-pressure cylinder shaft component 32, a high-pressure sub-cylinder component 33, a first embracing group component 34, a second embracing group component 35 and an ejector cylinder component 36. A high-pressure cylinder shaft component 32 is arranged at the center of the bottom of the locking tail, and high-pressure sub-cylinder components 33 are arranged symmetrically in pairs on the outside of the high-pressure cylinder shaft component 32. The ejector cylinder component 36 is installed at the center of the top of the locking tail plate 11. The first embracing group component 34 and the second embracing group component 35 are arranged on the left and right sides of the ejector cylinder 361 component. The first embracing group component 34 and the second embracing group component 35 have the same structure. The cylinder shaft of the ejector cylinder component 36 passes through the locking tail plate 11 and is connected to the high-pressure cylinder shaft component 32. The high-pressure sub-cylinder is used to assist the high-pressure cylinder shaft component 32.

[0035] In the embodiment, the high-pressure cylinder component includes a high-pressure cylinder shaft bottom 321, a high-pressure cylinder shaft 322 and a high-pressure cylinder flange 323. The high-pressure cylinder shaft 322 is installed at the bottom of the clamping tail through the high-pressure cylinder shaft bottom 321, and a high-pressure cylinder flange 323 is arranged on the outer side of the high-pressure cylinder shaft 322.

[0036] In the embodiment, the ejector cylinder component 36 includes an ejector cylinder 361, an ejector cylinder fixing plate 362, an ejector push plate 363 and an ejector guide rod 364. The ejector cylinder 361 is installed on the top of the clamping tail plate 11 through the ejector cylinder fixing plate 362. The cylinder shaft of the ejector cylinder 361 passes through the clamping tail plate 11 and is arranged inside the bottom of the high-pressure cylinder. The cylinder shaft of the ejector cylinder 361 is installed with an ejector push plate 363. The ejector push plate 363 is installed with an ejector guide rod 364, and the ejector guide rod 364 is connected to the middle plate.

[0037] In the embodiment, the high-pressure auxiliary cylinder component 33 includes a high-pressure auxiliary cylinder shaft bottom 331, a high-pressure auxiliary cylinder shaft 332 and a high-pressure auxiliary cylinder flange 333. The high-pressure auxiliary cylinder shaft 332 is installed at the bottom of the clamping tail through the high-pressure auxiliary cylinder shaft bottom 331, and a high-pressure auxiliary cylinder flange 333 is arranged on the outer side of the high-pressure auxiliary cylinder shaft 332.

[0038] In the embodiment, the first embracing component includes a first embracing component 341, a second embracing component 342, an embracing cylinder group 343, an embracing machine connecting rod 344, an embracing guide rod 345, an inductive switch transmitter 346 and an inductive switch receiver 347. The first embracing component 341 is arranged at the left corner of the clamping tail plate 11, and the second embracing component 342 is arranged at the right corner of the clamping tail plate 11. The first embracing component 341 and the second embracing component 342 are symmetrically arranged. The first embracing component 341 and the second embracing component 342 are connected by the embracing cylinder group 343 and the embracing machine connecting rod 344. A plurality of embracing guide rods 345 are connected to the first embracing component 341 and the second embracing component 342. The first embracing component 341 is installed with an inductive switch transmitter 346 and an inductive switch receiver 347. The first embracing component 341 and the second embracing component 342 have the same structure.

[0039] In the embodiment, the first engaging component 341 includes a first engaging nut component 3411, a second engaging nut component 3412, an engaging pad 3413 and an engaging nut guide block 3414. The engaging pad is installed on the locking mold tail plate 11. The inner and outer sides of the engaging pad are provided with engaging nut guide blocks 3414. The interior of the engaging pad is symmetrically provided with the first engaging nut component 3411 and the second engaging nut component 3412. The engaging nut guide block 3414 is slidingly connected to the first engaging nut component 3411 and the second engaging nut component 3412. The induction switch transmitter 346 is installed on the top of the first engaging nut component 3411, the induction switch receiver 347 is installed on the top of the second engaging nut component 3412, and the engaging guide rod 345 passes through the second engaging nut component 3412 and is connected to the second engaging nut component 3412.

[0040] In the embodiment, a second mold locking plate slide foot 63 component 6 is also provided on the tail plate assembly 1 and the mold locking middle plate 2. The second mold locking plate slide foot 63 component 6 includes a slider 61, a slide rail 62, a second mold locking plate slide foot 63 and a pulley 64. A plurality of sliders 61 are fixed to the left side of the mold locking middle plate 2. The second mold locking plate slide foot 63 is connected to the slider 61 through the slide rail 62. A plurality of pulleys 64 are provided inside the second mold locking plate slide foot 63.

[0041] Working principle:

[0042] (I) Mold opening and closing process

[0043] Mold closing action

[0044] When the injection mold closing operation is required, the quick cylinder groups on both sides of the head plate assembly start working and their cylinder shafts extend. Since the cylinder shafts of the quick cylinder groups are connected to the tail plate assembly through screws, the distance between the head plate assembly and the tail plate assembly gradually decreases under the force of the cylinder shaft extension, thereby pushing the clamping middle plate to move downward along the second clamping plate sliding foot component (assuming that the initial position of the clamping middle plate is at the top). During the descent of the clamping middle plate, the cylinder shaft of the ejector cylinder component in the tail plate assembly is in a retracted state and does not affect the movement of the clamping middle plate.

[0045] When the clamping middle plate drops to a certain position, the first and second clamping components in the tail plate assembly start to work. The clamping cylinder group drives the clamping machine connecting rod to move, so that the first and second clamping components are close to each other. The clamping nut guide blocks inside the first and second clamping components slide along the slider, driving the first and second clamping nut components to clamp each other, thereby clamping and fixing the mold and completing the mold clamping action.

[0046] Mold opening action

[0047] After the injection molding is completed, the mold opening operation is carried out. The cylinder shaft of the fast cylinder group retracts, pulling the head plate assembly away from the tail plate assembly. At this time, the clamping middle plate moves upward under the support of the second clamping plate sliding foot component. At the same time, the cylinder shaft of the ejector cylinder component extends, and the ejector in the mold is pushed through the ejector push plate and the ejector guide rod to make the injection molded product escape from the mold. When the clamping middle plate rises to the appropriate position, the first and second clamping group components work in reverse, and the clamping nut is loosened to complete the mold opening process.

[0048] (II) Pressure transmission and balance during high pressure injection molding

[0049] Pressure transmission

[0050] When high-pressure injection molding is performed after mold closing, the injection system of the injection molding machine injects the plastic melt into the mold cavity. At this time, the high-pressure cylinder shaft component and the high-pressure auxiliary cylinder component at the bottom of the tail plate assembly begin to play a role. The high-pressure cylinder shaft is supported by the bottom of the high-pressure cylinder shaft and connected to the mold through the high-pressure cylinder flange to transmit the injection pressure to the mold. The high-pressure auxiliary cylinder component assists the high-pressure cylinder shaft component to provide additional support to ensure that the pressure is evenly distributed on the mold, so that the plastic melt can fully fill the mold cavity and ensure the quality of the injection molded product.

[0051] Pressure balance and mold protection

[0052] The coordinated work of the high-pressure cylinder shaft component and the high-pressure auxiliary cylinder component can maintain the pressure balance of the mold during high-pressure injection molding, preventing the mold from being damaged due to excessive local pressure. At the same time, the first and second holding components tightly hold the mold, further enhancing the stability of the mold under high pressure, preventing the mold from displacement or deformation, and effectively protecting the mold.

[0053] (III) Collaborative work and monitoring of various components

[0054] Parts working together

[0055] During the entire injection molding process, the various components in the head plate assembly, the clamping middle plate, the tail plate assembly, as well as the connecting column, the quick cylinder group, the ejector cylinder component, the clamping group component, etc. cooperate with each other and work together. For example, the connecting column provides a stable connection frame for the entire mechanism to ensure the relative position of each component during the movement process; the clamping second plate sliding foot component ensures the smooth movement of the clamping middle plate, so that the opening and closing of the mold can be performed accurately; the high-pressure cylinder shaft component, the high-pressure auxiliary cylinder component and the clamping group component work together to achieve pressure transmission, balance and mold fixation during high-pressure injection molding.

[0056] Monitoring and feedback

[0057] The inductive switch transmitter on the first clasping component and the inductive switch receiver on the second clasping component monitor the status of the clasping components in real time. If an abnormality occurs during the clasping process, such as loose clasping or over-clasping, the inductive switch will feed back the signal to the control system. The operator can adjust the working parameters of the clasping cylinder group in time according to the feedback information to ensure the normal operation of the clasping components, thereby ensuring the safety of the mold and the smooth progress of the injection molding process.

[0058] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A high-precision mold locking mechanism for an injection molding machine, characterized in that: It includes a tail plate assembly, a mold locking middle plate, a head plate assembly and connecting columns. The connecting columns are arranged at the corners of the tail plate assembly, and the connecting columns penetrate the mold locking middle plate and are connected to the head plate assembly. The mold locking middle plate moves up and down between the tail plate assembly and the tail assembly through the head plate assembly.

2. A high-precision mold locking mechanism for an injection molding machine according to claim 1, characterized in that: The fast cylinder group is arranged on the left and right sides of the tail plate assembly, and the cylinder shaft of the fast cylinder group is connected to the head plate assembly through screws.

3. A high-precision mold locking mechanism for an injection molding machine according to claim 2, characterized in that: The tail plate assembly includes a locking tail plate, nuts and a nut pressing plate. A plurality of nuts are installed at the bottom of the locking tail plate. The nuts match the connecting column. The nut pressing plate is installed at the bottom of the nuts. The connecting column sequentially penetrates the locking tail plate and the nuts and is connected to the nut pressing plate.

4. A high-precision mold locking mechanism for an injection molding machine according to claim 3, characterized in that: The head plate assembly includes a clamping head plate, a high-pressure cylinder shaft component, a high-pressure sub-cylinder component, a first embracing group component, a second embracing group component and an ejector cylinder component. The high-pressure cylinder shaft component is arranged at the bottom center position of the clamping tail, and high-pressure sub-cylinder components are arranged symmetrically in pairs on the outside of the high-pressure cylinder shaft component. The ejector cylinder component is installed at the top center position of the clamping head plate. The first embracing group component and the second embracing group component are arranged on the left and right sides of the ejector cylinder component. The first embracing group component and the second embracing group component have the same structure. The cylinder shaft of the ejector cylinder component passes through the clamping head plate and is connected to the high-pressure cylinder shaft component. The high-pressure sub-cylinder is used to assist the high-pressure cylinder shaft component.

5. A high-precision mold locking mechanism for an injection molding machine according to claim 4, characterized in that: The high-pressure cylinder component includes a high-pressure cylinder shaft bottom, a high-pressure cylinder shaft and a high-pressure cylinder flange. The high-pressure cylinder shaft is installed on the bottom of the clamping tail through the high-pressure cylinder shaft bottom, and a high-pressure rod flange is arranged on the outer side of the high-pressure cylinder shaft.

6. A high-precision mold locking mechanism for an injection molding machine according to claim 5, characterized in that: The ejector cylinder component includes an ejector cylinder, an ejector cylinder fixing plate, an ejector push plate and an ejector guide rod. The ejector cylinder is installed on the top of the clamping head plate through the ejector cylinder fixing plate. The cylinder shaft of the ejector cylinder passes through the clamping head plate and is arranged inside the bottom of the high-pressure cylinder. The cylinder shaft of the ejector cylinder is installed with the ejector push plate, the ejector guide rod is installed on the ejector push plate, and the ejector guide rod is connected to the middle plate.

7. A high-precision mold locking mechanism for an injection molding machine according to claim 5 or 6, characterized in that: The high-pressure auxiliary cylinder component includes a high-pressure auxiliary cylinder shaft bottom, a high-pressure auxiliary cylinder shaft and a high-pressure auxiliary cylinder flange. The high-pressure auxiliary cylinder shaft is installed on the bottom of the clamping tail through the high-pressure auxiliary cylinder shaft bottom, and a high-pressure auxiliary cylinder flange is arranged on the outer side of the high-pressure auxiliary cylinder shaft.

8. A high-precision mold locking mechanism for an injection molding machine according to claim 7, characterized in that: The first embracing component comprises a first embracing component, a second embracing component, an embracing cylinder group, an embracing machine connecting rod, an embracing guide rod, an inductive switch transmitter and an inductive switch receiver. The first embracing component is arranged at the left corner of the clamping head plate, and the second embracing component is arranged at the right corner of the clamping head plate. The first embracing component and the second embracing component are symmetrically arranged. The first embracing component and the second embracing component are connected through the embracing cylinder group and the embracing machine connecting rod. A plurality of the embracing guide rods are connected to the first embracing component and the second embracing component. The first embracing component is installed with the inductive switch transmitter and the inductive switch receiver. The first embracing component and the second embracing component have the same structure.

9. A high-precision mold locking mechanism for an injection molding machine according to claim 8, characterized in that: The first engaging component includes a first engaging nut component, a second engaging nut component, an engaging pad and an engaging nut guide block. The engaging pad is installed on the locking head plate. The engaging nut guide blocks are arranged on the inner and outer sides of the engaging pad. The first engaging nut component and the second engaging nut component are symmetrically installed inside the engaging pad. The engaging nut guide blocks are slidably connected to the first engaging nut component and the second engaging nut component. The induction switch transmitter is installed on the top of the first engaging nut component, and the induction switch receiver is installed on the top of the second engaging nut component. The engaging guide rod passes through the second engaging nut component and is connected to the second engaging nut component.

10. A high-precision mold locking mechanism for an injection molding machine according to claim 8, characterized in that: The head plate assembly and the mold locking middle plate are also provided with the mold locking second plate sliding foot component, and the mold locking second plate sliding foot component includes a slider, a slide rail, a mold locking second plate sliding foot and a pulley. A plurality of the sliders are fixed to the left side of the mold locking middle plate, and the mold locking second plate sliding foot is connected to the slider through the slide rail, and a plurality of the pulleys are arranged inside the mold locking second plate sliding foot.

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