Column pulling structure of injection molding machine

Abstract

The utility model discloses a column drawing structure of an injection molding machine. The column drawing structure comprises a fixed mold wall, the large column mechanism is connected to the fixed mold wall and can do reciprocating rectilinear motion along the central axis of the large column mechanism so as to be close to or away from the fixed mold wall; the driving mechanism is used for driving the large column mechanism to do reciprocating rectilinear motion; and the guide mechanism is fixed to the fixed mold wall, and the driving mechanism is arranged on the guide mechanism and can penetrate through the guide mechanism to be connected with the large column mechanism, so that the driving mechanism can drive the large column mechanism to slide when sliding along the guide mechanism. According to the utility model, the large column mechanism, the driving mechanism and the guide mechanism are combined, so that the column drawing action is accurately controlled; the guide mechanism ensures that the large column mechanism does accurate reciprocating rectilinear motion along the central axis, and deflection is avoided; the driving mechanism is connected with the large column mechanism through the guide mechanism, the transmission path is clear, and efficiency is high; the separated design of the driving mechanism and the guide mechanism simplifies the structure, reduces motion interference and improves the force transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machines, and in particular to a column extraction structure for an injection molding machine. Background Technology

[0002] In the production of traditional injection molding machines (especially large-tonnage models), if the mold height exceeds the mold opening space of the injection molding machine or the factory height is insufficient, the installation space is usually expanded by removing large columns.

[0003] However, the existing column extraction structure of injection molding machines has the following problems: most products on the market are made of thick iron plates, which results in excessive weight; they are often installed upside down, which leads to complicated installation methods; they require concentric shafts in the height direction for centering, which results in cumbersome positioning and high processing requirements; and most installation work needs to be completed at height, which poses safety hazards and long operation time.

[0004] Therefore, it is necessary to develop a simple, high-precision, and highly reliable injection molding machine column extraction structure. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The technical problem this utility model aims to solve is to provide a column extraction structure for an injection molding machine. Through the combination of a large column mechanism, a drive mechanism, and a guide mechanism, precise control of the column extraction action is achieved. The guide mechanism ensures that the large column mechanism performs precise reciprocating linear motion along the central axis, avoiding swaying. The drive mechanism is connected to the large column mechanism through the guide mechanism, resulting in a clear transmission path and high efficiency. Furthermore, the separate design of the drive mechanism and the guide mechanism (the drive mechanism passes through the guide mechanism to connect to the large column mechanism) simplifies the structure, reduces motion interference, and improves force transmission efficiency. Each mechanism is relatively independent, facilitating maintenance and replacement.

[0007] (II) Technical Solution

[0008] The solution adopted by this utility model to solve the above-mentioned technical problems is a column extraction structure for an injection molding machine, including...

[0009] Fixed mold wall;

[0010] The large column mechanism is connected to the fixed mold wall and can reciprocate linearly along its own central axis to move closer to or away from the fixed mold wall.

[0011] A drive mechanism for driving the reciprocating linear motion of the large column mechanism;

[0012] A guiding mechanism is fixed on the fixed mold wall, and the driving mechanism is disposed on the guiding mechanism and can pass through the guiding mechanism to connect with the large column mechanism, so that the driving mechanism can drive the large column mechanism to slide when sliding along the guiding mechanism.

[0013] Specifically, the fixed mold wall has assembly holes for assembling the large column mechanism, which facilitates the installation and positioning of the large column mechanism and enhances the rigidity and assembly convenience of the overall structure.

[0014] By adopting the above scheme, the combination of the column mechanism, drive mechanism, and guide mechanism achieves precise control of the column pulling action; the guide mechanism ensures that the column mechanism performs precise reciprocating linear motion along the central axis, avoiding swaying; the drive mechanism is connected to the column mechanism through the guide mechanism, resulting in a clear transmission path and high efficiency; moreover, the separate design of the drive mechanism and the guide mechanism (the drive mechanism passes through the guide mechanism to connect to the column mechanism) simplifies the structure, reduces motion interference, and improves force transmission efficiency; each mechanism is relatively independent, facilitating maintenance and replacement.

[0015] In some embodiments, the guiding mechanism includes a linear guide seat arranged along the movement direction of the large column mechanism and a linear guide fixed on the linear guide seat; the driving mechanism includes a hydraulic cylinder connecting seat adapted to the linear guide and a driving hydraulic cylinder fixed on the hydraulic cylinder connecting seat; and the lower end of the hydraulic cylinder connecting seat can pass through the linear guide seat and connect to the large column mechanism, so that the driving hydraulic cylinder can drive the large column mechanism to perform reciprocating linear motion; and the end of the linear guide seat near the large column mechanism is provided with an open end to avoid the linear motion of the hydraulic cylinder connecting seat.

[0016] The above solution employs a combination of linear guide seat and linear guide to provide high-precision linear guidance, reducing friction and offset during the movement of the large column mechanism; the hydraulic cylinder connecting seat is adapted to the linear guide, making the overall structure more compact, ensuring the linear transmission of driving force and avoiding wear caused by lateral forces; the open end design cleverly avoids the movement of the hydraulic cylinder connecting seat, preventing interference; the through-type connection method simplifies the assembly process.

[0017] In some embodiments, the large column mechanism includes a column core adaptable to the fixed mold wall and a column head connected to one end of the column core located outside the fixed mold wall; the shaft diameter of the column head is larger than the shaft diameter of the column core; and the hydraulic cylinder connecting seat is fixedly connected to the column head.

[0018] By adopting the above scheme, the column head acts as a force-bearing transition component, dispersing the driving force of the hydraulic cylinder and reducing local stress concentration in the column core.

[0019] In some embodiments, the linear guide seat includes a receiving groove for accommodating the drive cylinder, and the linear guide is provided on both ends of the receiving groove; the cylinder connecting seat includes an upper connecting seat and a lower connecting seat, the two ends of the upper connecting seat are adapted to the two linear guides, the lower connecting seat is adapted to the receiving groove, and can pass through the open end to be fixedly connected to the large column mechanism.

[0020] The above scheme makes full use of the internal space of the guide rail seat; the double guide rail arrangement provides a more stable guiding effect; the upper and lower connecting seats have clear division of labor, with the upper connecting seat responsible for guiding and the lower connecting seat responsible for force transmission; the modular design facilitates individual maintenance of each component.

[0021] In some embodiments, the lower connecting seat is positioned and locked by a positioning pin and the large column mechanism.

[0022] Using the above solution, the positioning pin achieves precise positioning of the lower connecting seat and the main column mechanism, ensuring coaxiality, avoiding installation deviation, and the locking method is simple and reliable, facilitating disassembly and maintenance.

[0023] In some embodiments, a fixing plate is provided on one end of the linear guide seat located in its axial direction, and the shaft end of the drive cylinder is fixed on the fixing plate.

[0024] Using the above solution, the fixing plate provides axial support for the drive cylinder, preventing the cylinder from shaking during operation and improving motion stability; the direct fixing method ensures effective transmission of driving force; the fixing plate enhances the rigidity of the overall structure; and the fixed connection reduces system vibration.

[0025] In some embodiments, the linear guide seat is fixed at one end in its axial direction to the top of the fixed mold wall, and the large column mechanism is disposed opposite to the fixed mold wall below the linear guide seat.

[0026] With the above scheme, the top of the linear guide is fixed and the main column mechanism is arranged below, which makes the center of gravity more stable and reduces vibration during movement; the vertical layout makes full use of equipment space; the main column mechanism is located below, which is convenient for observation and operation; and the layered layout facilitates separate maintenance.

[0027] In some embodiments, the fixed mold wall is provided with a clamping mechanism capable of clamping or releasing the large column mechanism.

[0028] By adopting the above scheme, the clamping mechanism ensures the precise positioning of the column mechanism; it can quickly switch between clamping and releasing states, ensuring the safety and reliability of the column extraction process.

[0029] In some embodiments, the clamping mechanism includes two hydraulic clamps disposed opposite each other at both ends of the large column mechanism.

[0030] Specifically, the two ends of the column head are provided with mating parts that can cooperate with the hydraulic clamp, so that the large column mechanism can be firmly clamped when the hydraulic clamp clamps the large column mechanism.

[0031] With the above solution, the hydraulic clamps at both ends provide a more uniform clamping force, avoiding deformation of the large column mechanism due to force on one side; the mating part of the column head matches the hydraulic clamp, increasing the contact area and improving the clamping firmness; the hydraulic drive can adjust the clamping force, and the action is fast, making it suitable for automated control.

[0032] In some embodiments, the system further includes a hydraulic system comprising a servo power source to provide power to the entire hydraulic system; a clamping control circuit for controlling the clamping mechanism; and a cylinder control circuit for controlling the drive cylinder. The clamping control circuit includes a first directional control valve for switching to achieve bidirectional control of the clamping / releasing column mechanism, a superimposed hydraulically controlled check valve for preventing the clamping mechanism from releasing, and a relief valve for preventing overpressure of the clamping force. The cylinder control circuit includes a second directional control valve for controlling the extension and retraction of the drive cylinder.

[0033] The driving cylinder of this utility model can drive the large column mechanism to move within the horizontal direction (0 to X); and the large column mechanism can completely exit the mold surface of the fixed mold wall; the linear guide seat remains stable when the driving cylinder is in motion, effectively overcoming the influence of gravity on the large column mechanism; the hydraulic clamp clamps when the large column mechanism is resetting, effectively overcoming the reaction force generated during pressurization, ensuring the stability and accuracy of the system; the servo power source provides unified power for the entire system; the hydraulic clamp is controlled by a first directional control valve to clamp / release; the superimposed hydraulic control check valve prevents the hydraulic clamp from being accidentally released; the overflow valve prevents overpressure of the clamping force, protecting the system safety; the driving cylinder is controlled by a second directional control valve; through the coordinated cooperation of the mechanical structure, hydraulic system and control system, the whole system ultimately achieves: precise positioning of the large column mechanism at any position within the horizontal direction (0 to X), stable and reliable large column extraction function, and safe and efficient automated operation.

[0034] (III) Beneficial Effects

[0035] Compared with the prior art, this utility model designs a column extraction structure for an injection molding machine.

[0036] (1) This utility model achieves precise control of the column pulling action through the combination of the column mechanism, the drive mechanism, and the guide mechanism; the guide mechanism ensures that the column mechanism makes precise reciprocating linear motion along the central axis and avoids swaying; the drive mechanism is connected to the column mechanism through the guide mechanism, the transmission path is clear and the efficiency is high; moreover, the separate design of the drive mechanism and the guide mechanism (the drive mechanism passes through the guide mechanism to connect to the column mechanism) simplifies the structure, reduces motion interference, and improves the force transmission efficiency; each mechanism is relatively independent, which is convenient for maintenance and replacement.

[0037] (2) This utility model adopts a combination of linear guide seat and linear guide to provide high-precision linear guidance and reduce friction and offset when the large column mechanism moves; the oil cylinder connecting seat is adapted to the linear guide, the overall structure is more compact, ensuring the linear transmission of driving force and avoiding wear caused by lateral force; the open end design cleverly avoids the movement of the oil cylinder connecting seat and prevents interference; the through connection method simplifies the assembly process.

[0038] (3) The present invention provides axial support for the drive cylinder by setting a fixing plate to prevent the cylinder from shaking during operation and improve motion stability; the direct fixing method ensures effective transmission of driving force; the fixing plate enhances the rigidity of the overall structure; the fixed connection reduces system vibration;

[0039] (4) The clamping mechanism of this utility model ensures the precise positioning of the large column mechanism; it can quickly switch between clamping and releasing states to ensure the safety and reliability of the column extraction process; the hydraulic clamps at both ends provide a more uniform clamping force to avoid deformation of the large column mechanism under unilateral force; the mating part of the column head matches the hydraulic clamp to increase the contact area and improve the clamping firmness; the hydraulic drive can adjust the clamping force, and the action is fast, making it suitable for automated control.

[0040] (5) Through the coordinated operation of mechanical structure, hydraulic system and control system, this utility model ultimately achieves: precise positioning of the large column mechanism at any position in the horizontal direction (0 to X), stable and reliable large column pulling function, and safe and efficient automated operation. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the column extraction structure of an injection molding machine according to the present invention;

[0043] Figure 2 This is an exploded view of the column extraction structure of an injection molding machine according to the present invention;

[0044] Figure 3 This is a schematic diagram of the hydraulic system of the column extraction structure of an injection molding machine according to the present invention.

[0045] The component names corresponding to the various reference numerals in the figure are as follows: 100, fixed mold wall; 101, assembly hole; 200, large column mechanism; 201, column core; 202, column head; 2021, mating part; 300, drive mechanism; 301, cylinder connecting seat; 3011, upper connecting seat; 3012, lower connecting seat; 302, drive cylinder; 400, guide mechanism; 401, linear guide seat; 4011, open end; 4012, receiving groove; 402, linear guide; 403, fixing plate; 500, clamping mechanism; 501, hydraulic clamp; 10, servo power source; 20, first direction control valve; 30, superimposed hydraulic control check valve; 40, overflow valve; 50, second direction control valve. Detailed Implementation

[0046] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of this utility model.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] It should be noted that the following description covers various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0050] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0051] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0052] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0053] like Figures 1-3As shown, this utility model provides a column extraction structure for an injection molding machine, including a fixed mold wall 100; a large column mechanism 200 connected to the fixed mold wall 100 and capable of reciprocating linear motion along its own central axis to move closer to or away from the fixed mold wall 100; a drive mechanism 300 for driving the reciprocating linear motion of the large column mechanism 200; and a guide mechanism 400 fixed to the fixed mold wall 100. The drive mechanism 300 is disposed on the guide mechanism 400 and can pass through the guide mechanism 400 to connect with the large column mechanism 200, so that when the drive mechanism 300 slides along the guide mechanism 400, it can drive the large column mechanism 200 to slide. Specifically, the fixed mold wall 100 has an assembly hole 101 for assembling the large column mechanism 200, which facilitates the installation and positioning of the large column mechanism 200 and enhances the rigidity and assembly convenience of the overall structure. By adopting the above scheme, the combination of the column pulling mechanism 200, the drive mechanism 300, and the guide mechanism 400 achieves precise control of the column pulling action. The guide mechanism 400 ensures that the column pulling mechanism 200 performs precise reciprocating linear motion along the central axis, avoiding swaying. The drive mechanism 300 is connected to the column pulling mechanism 200 through the guide mechanism 400, resulting in a clear transmission path and high efficiency. Furthermore, the separate design of the drive mechanism 300 and the guide mechanism 400 (the drive mechanism 300 passes through the guide mechanism 400 to connect to the column pulling mechanism 200) simplifies the structure, reduces motion interference, and improves force transmission efficiency. Each mechanism is relatively independent, facilitating maintenance and replacement.

[0054] In some embodiments, the guide mechanism 400 includes a linear guide seat 401 arranged along the movement direction of the large column mechanism 200, and a linear guide 402 fixed on the linear guide seat 401; the drive mechanism 300 includes a cylinder connecting seat 301 adapted to the linear guide 402, and a drive cylinder 302 fixed on the cylinder connecting seat 301; and the lower end of the cylinder connecting seat 301 can pass through the linear guide seat 401 and connect to the large column mechanism 200, so that the drive cylinder 302 can drive the large column mechanism 200 to perform reciprocating linear motion; and the linear guide seat 401 is provided with an open end 4011 at one end near the large column mechanism 200 to avoid the linear motion of the cylinder connecting seat 301. The above scheme uses a combination of linear guide seat 401 and linear guide 402 to provide high-precision linear guidance and reduce friction and offset during the movement of the large column mechanism 200; the cylinder connecting seat 301 is adapted to the linear guide 402, making the overall structure more compact, ensuring the linear transmission of driving force and avoiding wear caused by lateral force; the open end 4011 is cleverly designed to avoid the movement of the cylinder connecting seat 301 and prevent interference; the through-type connection method simplifies the assembly process.

[0055] In some embodiments, the large column mechanism 200 includes a column core 201 adaptable to the fixed mold wall 100, and a column head 202 connected to one end of the column core 201 located outside the fixed mold wall 100; the shaft diameter of the column head 202 is larger than the shaft diameter of the column core 201; and the hydraulic cylinder connecting seat 301 is fixedly connected to the column head 202. With the above solution, the column head 202 acts as a force-bearing transition component, dispersing the driving force of the hydraulic cylinder and reducing local stress concentration in the column core 201.

[0056] In some embodiments, the linear guide seat 401 includes a receiving groove 4012 for accommodating the drive cylinder 302, with linear guides 402 provided at both ends of the receiving groove 4012; the cylinder connecting seat 301 includes an upper connecting seat 3011 and a lower connecting seat 3012, the two ends of the upper connecting seat 3011 being adapted to the two linear guides 402, and the lower connecting seat 3012 being adapted to the receiving groove 4012 and able to pass through the open end 4011 and be fixedly connected to the large column mechanism 200. With the above design, the receiving groove 4012 fully utilizes the internal space of the linear guide seat 401; the arrangement of the double linear guides 402 provides a more stable guiding effect; the upper and lower connecting seats 3012 have clearly defined functions, with the upper connecting seat 3011 responsible for guiding and the lower connecting seat 3012 responsible for force transmission; the modular design facilitates individual maintenance of each component. In some embodiments, the lower connecting seat 3012 is positioned and locked to the large column mechanism 200 by a positioning pin. Using the above scheme, the positioning pin achieves precise positioning of the lower connecting seat 3012 and the large column mechanism 200, ensuring coaxiality, avoiding installation deviation, and the locking method is simple and reliable, facilitating disassembly and maintenance. In some embodiments, a fixing plate 403 is provided on one axial end of the linear guide seat 401, and the shaft end of the drive cylinder 302 is fixed on the fixing plate 403. Using the above scheme, the fixing plate 403 provides axial support for the drive cylinder 302, preventing the cylinder from shaking during operation and improving motion stability; the direct fixing method ensures effective transmission of driving force; the fixing plate 403 enhances the rigidity of the overall structure; and the fixed connection reduces system vibration. In some embodiments, one axial end of the linear guide seat 401 is fixed on the top of the fixed mold wall 100, and the large column mechanism 200 passes through the fixed mold wall 100 below the linear guide seat 401. With the above scheme, the top of the linear guide 401 is fixed and the main column mechanism 200 is arranged below, which makes the center of gravity more stable and reduces vibration during movement; the vertical layout makes full use of the equipment space; the main column mechanism 200 is located below, which is convenient for observation and operation; the layered arrangement facilitates separate maintenance.

[0057] In some embodiments, the fixed mold wall 100 is provided with a clamping mechanism 500 capable of clamping or releasing the large column mechanism 200. Using this scheme, the clamping mechanism 500 ensures the precise positioning of the large column mechanism 200; it can quickly switch between clamping and releasing states, ensuring the safety and reliability of the column extraction process. In some embodiments, the clamping mechanism 500 includes two hydraulic clamps 501 disposed opposite to both ends of the large column mechanism 200. Specifically, both ends of the column head 202 are provided with mating portions 2021 that can cooperate with the hydraulic clamps 501, so that the large column mechanism 200 can be firmly clamped when the hydraulic clamps 501 clamp the large column mechanism 200. Using this scheme, the hydraulic clamps 501 at both ends provide a more uniform clamping force, avoiding unilateral deformation of the large column mechanism 200; the mating portions 2021 of the column head 202 match the hydraulic clamps 501, increasing the contact area and improving clamping stability; the hydraulic drive allows for adjustment of the clamping force, with rapid action, suitable for automated control.

[0058] In some embodiments, the system further includes a hydraulic system, which includes a servo power source 10 to provide power to the entire hydraulic system; a clamping control circuit for controlling the clamping mechanism 500; and a cylinder control circuit for controlling the drive cylinder 302. The clamping control circuit includes a first directional control valve 20 for switching to achieve bidirectional control of clamping / releasing the large column mechanism 200, a superimposed hydraulic control check valve 30 for preventing the clamping mechanism 500 from releasing, and a relief valve 40 for preventing overpressure of the clamping force. The cylinder control circuit includes a second directional control valve 50 for controlling the extension and retraction movement of the drive cylinder 302. The driving cylinder 302 of this utility model can drive the large column mechanism 200 to move within the horizontal direction (0 to X); and the large column mechanism 200 can completely exit the mold surface of the fixed mold wall 100; the linear guide seat 401 remains stable when the driving cylinder 302 is in motion, effectively overcoming the influence of gravity on the large column mechanism 200; the hydraulic clamp 501 clamps the large column mechanism 200 during its reset operation, effectively overcoming the reaction force generated during pressurization, ensuring the stability and accuracy of the system operation; the servo power source 10 provides unified power to the entire system. Power; the hydraulic clamp 501 is controlled by the first directional control valve 20 to clamp / release; the superimposed hydraulic control check valve 30 prevents the hydraulic clamp 501 from being accidentally released; the relief valve 40 prevents overpressure of the clamping force and protects the system safety; the drive cylinder 302 is controlled by the second directional control valve 50; through the coordinated cooperation of the mechanical structure, hydraulic system and control system, the whole system ultimately achieves: precise positioning of the large column mechanism 200 in any position in the horizontal direction (0 to X), stable and reliable large column pulling function, and safe and efficient automated operation.

[0059] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0060] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A column extraction structure for an injection molding machine, characterized in that: include Fixed mold wall (100); The large column mechanism (200) is connected to the fixed mold wall (100) and is capable of reciprocating linear motion along its own central axis to move closer to or away from the fixed mold wall (100). A drive mechanism (300) is used to drive the reciprocating linear motion of the large column mechanism (200); A guide mechanism (400) is fixed on the fixed mold wall (100), and a drive mechanism (300) is provided on the guide mechanism (400) and can pass through the guide mechanism (400) to connect with the large column mechanism (200), so that when the drive mechanism (300) slides along the guide mechanism (400), it can drive the large column mechanism (200) to slide.

2. The column extraction structure of the injection molding machine according to claim 1, characterized in that: The guiding mechanism (400) includes a linear guide seat (401) arranged along the movement direction of the main column mechanism (200) and a linear guide (402) fixed on the linear guide seat (401); the driving mechanism (300) includes a hydraulic cylinder connecting seat (301) adapted to the linear guide (402) and a driving hydraulic cylinder (302) fixed on the hydraulic cylinder connecting seat (301); and the lower end of the hydraulic cylinder connecting seat (301) can pass through the linear guide seat (401) and connect to the main column mechanism (200) so that the driving hydraulic cylinder (302) can drive the main column mechanism (200) to perform reciprocating linear motion; and the end of the linear guide seat (401) near the main column mechanism (200) is provided with an open end (4011) to avoid the linear motion of the hydraulic cylinder connecting seat (301).

3. The column extraction structure of the injection molding machine according to claim 2, characterized in that: The large column mechanism (200) includes a column core (201) that can be adapted to the fixed mold wall (100) and a column head (202) connected to one end of the column core (201) located outside the fixed mold wall (100); the shaft diameter of the column head (202) is larger than the shaft diameter of the column core (201); and the hydraulic cylinder connecting seat (301) is fixedly connected to the column head (202).

4. The column extraction structure of the injection molding machine according to claim 2, characterized in that: The linear guide seat (401) includes a receiving groove (4012) for accommodating the drive cylinder (302), and the linear guide (402) is provided on both ends of the receiving groove (4012); the cylinder connecting seat (301) includes an upper connecting seat (3011) and a lower connecting seat (3012), the two ends of the upper connecting seat (3011) are adapted to the two linear guides (402), and the lower connecting seat (3012) is adapted to the receiving groove (4012) and can pass through the open end (4011) to be fixedly connected to the large column mechanism (200).

5. The column extraction structure of the injection molding machine according to claim 4, characterized in that: The lower connecting seat (3012) is positioned and locked by the positioning pin and the large column mechanism (200).

6. The column extraction structure of the injection molding machine according to claim 2, characterized in that: The linear guide seat (401) has a fixing plate (403) on one end of its axial direction, and the shaft end of the drive cylinder (302) is fixed on the fixing plate (403).

7. The column extraction structure of the injection molding machine according to claim 2, characterized in that: The linear guide seat (401) is fixed at one end of its axial direction on the top of the fixed mold wall (100), and the large column mechanism (200) is disposed opposite to the fixed mold wall (100) below the linear guide seat (401).

8. The column extraction structure of the injection molding machine according to claim 2, characterized in that: The fixed mold wall (100) is provided with a clamping mechanism (500) capable of clamping or releasing the large column mechanism (200).

9. The column extraction structure of the injection molding machine according to claim 8, characterized in that: The clamping mechanism (500) includes two hydraulic clamps (501) disposed opposite each other at both ends of the large column mechanism (200).

10. The column extraction structure of the injection molding machine according to claim 8, characterized in that: It also includes a hydraulic system, which includes a servo power source (10) to provide power to the entire hydraulic system; a clamp control circuit for controlling the clamping mechanism (500); and a cylinder control circuit for controlling the drive cylinder (302). The clamp control circuit includes a first directional control valve (20) for switching to realize bidirectional control of clamping / releasing the large column mechanism (200), a superimposed hydraulic control check valve (30) for preventing the clamping mechanism (500) from releasing, and an overflow valve (40) for preventing overpressure of the clamping force. The cylinder control circuit includes a second directional control valve (50) for controlling the extension and retraction of the drive cylinder (302).

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