A bidirectional statically determinate structure type hot runner ejection mechanism

Abstract

The present application relates to the technical field of long-axis hot-charged part loading and unloading mechanism, and particularly relates to a bidirectional static structure type hot-charged part ejection mechanism, which comprises an adapter sleeve, an outer sleeve and a double-acting jack, the adapter sleeve is fixedly connected with the body part of the double-acting jack, the outer sleeve is fixedly connected with the telescopic part of the double-acting jack, a main shaft is fixedly connected on the adapter sleeve, a hot-charged part is fixedly connected on the outer sleeve, and the hot-charged part is coaxial with the main shaft. The bidirectional static structure type hot-charged part ejection mechanism realizes effective force transmission when the hot-charged part is ejected or pulled in, provides a stable and reliable structural basis for loading and unloading of the long main shaft hot-charged part, and solves the problem that the traditional loading and unloading mechanism cannot cope with the complex working conditions of the long main shaft hot-charged part.

Description

Technical Field

[0001] This invention relates to the technical field of long-axis hot-assembly component loading and unloading mechanisms, and specifically to a bidirectional statically determinate hot-assembly component ejection mechanism. Background Technology

[0002] In existing technologies, the hot fitting process for small-diameter, thin-walled circular parts faces numerous challenges. Because these parts have relatively small thermal expansion and are prone to heat loss during hot fitting, they can easily become stuck on the contact surface during the hot fitting process onto the long shaft, leading to difficulties in hot fitting.

[0003] Traditional loading and unloading mechanisms have significant limitations. On the one hand, they can only disassemble short-distance hot-fitting components of the spindle, and are powerless to disassemble long hot-fitting components of the spindle. On the other hand, traditional loading and unloading mechanisms are mainly suitable for disassembling the small-diameter end of the spindle using pulling force as the primary method, and cannot meet the actual needs when faced with complex working conditions such as ejecting hot-fitting components from long spindles.

[0004] Therefore, it is urgent to develop a new loading and unloading mechanism that can adapt to the complex working conditions of hot-mounted parts ejection on long spindles, change the axial transmission mode of ejection or pulling force, and increase the axial distance of hot-mounted parts that can be disassembled. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a bidirectional statically determinate hot fitting ejection mechanism. This bidirectional statically determinate hot fitting ejection mechanism effectively transmits force when hot fittings are ejected or pulled in, providing a stable and reliable structural foundation for the loading and unloading of hot fittings on long spindles, and solving the problem that traditional loading and unloading mechanisms cannot cope with the complex working conditions of hot fittings on long spindles.

[0006] The technical solution of the present invention is as follows:

[0007] A bidirectional statically determinate structure hot fitting ejection mechanism includes an adapter sleeve, an outer sleeve, and a double-acting jack. The adapter sleeve is fixedly connected to the main body of the double-acting jack, the outer sleeve is fixedly connected to the telescopic part of the double-acting jack, the main shaft is fixedly connected to the adapter sleeve, the hot fitting is fixedly connected to the outer sleeve, and the hot fitting is coaxial with the main shaft.

[0008] The outer sleeve is fixedly connected to the telescopic part of the double-acting jack via a jack adapter. One end of the jack adapter is fixedly installed on the telescopic part of the double-acting jack, and the other end of the jack adapter and the outer sleeve are provided with concentric pin holes, in which pins are installed.

[0009] The adapter sleeve is provided with an elongated guide groove that mates with the pin.

[0010] A threaded hole is provided at the end of the adapter sleeve, and an external thread is provided at the end of the main shaft to mate with the threaded hole at the end of the adapter sleeve.

[0011] The jack pad and top rib are fastened to the body of the double-acting jack with hex socket screws, and the adapter sleeve is fixedly connected to the jack pad.

[0012] The hot fitting is fixedly connected to the outer sleeve by the ejector flange, which forms a reliable connection between the hot fitting and the outer sleeve and can withstand the force generated during the ejection or pulling process. As a key component connecting the hot fitting and the outer sleeve, the ejector flange has a reasonable structural design and can ensure the stability and safety of the hot fitting during loading and unloading.

[0013] The ejector flange consists of two semi-circular rings with bosses on the inner ring. The bosses are engaged in grooves on the hot fitting, creating a tight fit between the ejector flange and the hot fitting, which can effectively transmit force.

[0014] The ejector flange undergoes quenching heat treatment, which improves its hardness and wear resistance, enhances its service life and reliability, and ensures that it will not be damaged or deformed during multiple loading and unloading of hot components.

[0015] The ejector flange is made of 42CrMo material. The use of 42CrMo material to manufacture the ejector flange improves the strength and reliability of key parts of the mechanism, ensuring that no failures will occur due to insufficient strength of the ejector flange during the ejection or pull-in of hot-loaded parts.

[0016] The pins and outer sleeves are made of 42CrMo material. The high strength and wear resistance of 42CrMo allow the pins and outer sleeves to withstand various forces and frictions during the mechanism's operation. As a key component for connection and force transmission, the strength and reliability of the pins directly affect the performance of the entire mechanism. The outer sleeve, as a component in direct contact with heat-sensitive parts, needs sufficient strength and wear resistance to ensure long-term stable operation. Using 42CrMo material to manufacture the pins and outer sleeves improves the yield strength of key parts of the mechanism, ensuring its stability and reliability.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This invention discloses a bidirectional statically determinate hot fitting ejection mechanism. This bidirectional statically determinate hot fitting ejection mechanism is fixedly connected to the body of a double-acting jack via an adapter sleeve, and the outer sleeve is fixedly connected to the telescopic part of the double-acting jack. The main shaft is fixed on the adapter sleeve, and the hot fitting is fixed on the outer sleeve and coaxial with the main shaft. This structural design realizes the effective transmission of force when the hot fitting is ejected or pulled in, and provides a stable and reliable structural foundation for the loading and unloading of hot fittings on long main shafts. It solves the problem that traditional loading and unloading mechanisms cannot cope with the complex working conditions of hot fittings on long main shafts.

[0019] 2. The present invention discloses a bidirectional statically determinate hot fitting ejection mechanism. In this bidirectional statically determinate hot fitting ejection mechanism, the outer sleeve is fixedly connected to the telescopic part of the double-acting jack through a jack conversion head. The jack conversion head and the outer sleeve are provided with concentric pin holes and installed with pins, so that a stable linkage mechanism is formed between the outer sleeve and the double-acting jack. This not only ensures the accurate transmission of force, but also facilitates the assembly and disassembly of the mechanism, improving the flexibility and maintainability of the mechanism.

[0020] 3. The present invention discloses a bidirectional statically determinate structure hot fitting ejection mechanism. In this bidirectional statically determinate structure hot fitting ejection mechanism, the transition sleeve is provided with an elongated oval guide groove that cooperates with the pin. When the mechanism is working, the pin moves in the guide groove, which can guide the movement direction of the outer sleeve relative to the transition sleeve, ensuring the stability and accuracy of the outer sleeve during axial movement, and avoiding the outer sleeve from deviating or shaking during movement, thereby improving the accuracy and reliability of the hot fitting ejection or pull-in operation. Attached Figure Description

[0021] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0022] In the attached diagram:

[0023] Figure 1 This is a cross-sectional view of a bidirectional statically determinate hot-fitting ejection mechanism according to an embodiment of the present invention.

[0024] Figure 2 A three-dimensional schematic diagram of a bidirectional statically determinate hot-fitting ejection mechanism according to an embodiment of the present invention.

[0025] Figure 3 This is a cross-sectional view of a bidirectional statically determinate hot-fitting ejection mechanism according to an embodiment of the present invention during operation.

[0026] The components represented by the various reference numerals in the diagram are:

[0027] This invention comprises: 1. an adapter sleeve; 2. a jack conversion head; 3. a pin; 4. a jack pad; 5. a top rib; 6. an outer sleeve; 7. an ejector flange; 8. a double-acting jack; 9. a hex socket head cap screw; 10. a heat-fitting component; and 11. a main shaft. Detailed Implementation

[0028] like Figures 1 to 3 As shown, a bidirectional statically determinate hot fitting ejection mechanism includes an adapter sleeve 1 with an internal guide groove. The adapter sleeve 1 is fitted with a jack conversion head 2. The jack conversion head 2 forms a linkage mechanism with the outer outer sleeve 6 by inserting a pin 3. The outer sleeve 6 and the ejection flange 7 are fitted with the hot fitting 10 by custom dimensions. The hot fitting 10 and the main shaft 11 are interference fit. The tail of the main shaft 11 is threaded and threaded with the adapter sleeve 1.

[0029] The adapter sleeve 1 is threadedly connected to the main shaft 11, and the main shaft 11 and the heat fitting 10 are installed on the same axis.

[0030] The double-acting hydraulic jack 8 is mounted on the same axis by machining a top rib plate 5 with positioning grooves and using long bolts. In this embodiment, the double-acting hydraulic jack 8 is an Enpact RR1012.

[0031] The adapter sleeve 1 and the outer sleeve 6 are linked by a pin 3.

[0032] The double-acting jack 8 can be connected to a pressure gauge and is matched with the jack adapter 2 through the jack pad 4.

[0033] The ejector flange 7 is equipped with a transition fillet and is subjected to quenching heat treatment.

[0034] Pin 3, outer sleeve 6, and ejector flange 7 are all machined from 42CrMO.

[0035] The working process of this bidirectional statically determinate hot-fitting ejection mechanism is as follows:

[0036] Prepare a double-acting jack 8. Secure the jack pad 4 and top rib plate 5 to the body of the double-acting jack 8 using hex socket screws 9. Ensure the hex socket screws 9 are tightened to ensure a secure connection between the jack pad 4 and top rib plate 5 and the body of the double-acting jack 8, providing a stable foundation for the subsequent installation of the adapter sleeve. Fix the adapter sleeve 1 to the jack pad 4. Welding or bolting can be used; in this embodiment, welding is used to ensure a tight and stable connection between the adapter sleeve 1 and the jack pad 4, ensuring effective force transmission. The outer sleeve 6 is fixedly connected to the telescopic part of the double-acting jack 8 via the jack adapter head 2. First, fix one end of the jack adapter head 2 to the telescopic part of the double-acting jack 8. Welding or threaded connections can be used; in this embodiment, a threaded connection is used to ensure a reliable connection. Then, concentric pin holes are set on the other end of the jack adapter 2 and the outer sleeve 6. The pin 3 is inserted into the pin hole to achieve a fixed connection between the outer sleeve 6 and the telescopic part of the double-acting jack 8. A threaded hole is set at the end of the adapter sleeve 1, and an external thread is set at the end of the main shaft 11 to match the threaded hole at the end of the adapter sleeve 1. The end of the main shaft 11 is threaded to the threaded hole at the end of the adapter sleeve 1, and the main shaft 11 is tightened to fix the main shaft 11 and the adapter sleeve 1, ensuring that the main shaft 11 and the adapter sleeve 1 are coaxial, thus ensuring the accuracy of subsequent hot fitting installation. The hot fitting 10 is fixedly connected to the outer sleeve 6 through the ejector flange 7. The ejector flange 7 consists of two semi-circular rings with bosses on the inner ring. The two semi-circular rings of the ejector flange 7 are respectively inserted into the grooves on the hot fitting 10, so that the bosses and grooves fit tightly. Then, the two semi-circular rings are connected by bolts or other connection methods to fix the heat fitting 10 on the outer sleeve 6, and ensure that the heat fitting 10 is coaxial with the main shaft 11.

[0037] The ejector flange 7 is subjected to quenching heat treatment to improve its hardness and wear resistance, enhance its service life and reliability, and ensure that it will not be damaged or deformed during multiple loading and unloading of hot components.

[0038] The ejector flange 7 is made of 42CrMo material, as are the pin 3 and the outer sleeve 6. 42CrMo material has high yield strength and good toughness, enabling it to withstand greater forces and impacts. This improves the strength and reliability of key components, ensuring that no failures occur due to insufficient component strength during the ejection or pull-in of hot-fitting parts.

[0039] After the mechanism is assembled, it is tested. Check whether the connections between the components are firm and whether the movement is flexible. By operating the double-acting jack 8, observe the movement of the adapter sleeve 1, outer sleeve 6, main shaft 11 and heat-fitting component 10 to ensure that the force transmission is smooth and there is no interference between the components.

[0040] When a hot-fitting component needs to be ejected, the double-acting jack 8 is activated, causing its telescopic part to extend. The jack conversion head 2 and pin 3 drive the outer sleeve 6 to move, which in turn drives the ejection flange 7 and the hot-fitting component 10 to move axially, thus achieving the ejection of the hot-fitting component.

[0041] When it is necessary to pull in the hot fitting, the double-acting jack 8 is activated, causing its telescopic part to retract. Through the above-mentioned transmission method, the hot fitting 10 is driven to move in the opposite direction along the axial direction, thereby realizing the pulling in of the hot fitting.

[0042] This bidirectional, statically determinate hot-fitting ejection mechanism alters the axial transmission of ejection or pull-out forces by employing a transmission method involving a transition sleeve, pins, and an outer sleeve, thereby increasing the axial distance at which the hot-fitting components can be disassembled. The inner diameter of the outer sleeve mates with the maximum outer diameter of the main shaft, mitigating the influence of the main shaft's large shoulder diameter on axial force transmission. A double-acting hydraulic jack enables both ejection and pull-in actions. The pins, outer sleeve, and ejection flange are all made of 42CrMo, improving the yield strength of key components, while other parts are made of 45# steel, significantly reducing production cycles and costs.

Claims

1. A two-way self-stable structure hot-chucking part ejection mechanism, characterized in that, The utility model relates to a kind of hydraulic jack, including adapter sleeve (1), outer sleeve (6) and double-acting jack (8), adapter sleeve (1) is fixedly connected with the body part of double-acting jack (8), outer sleeve (6) is fixedly connected with the telescopic part of double-acting jack (8), main shaft (11) is fixedly connected on adapter sleeve (1), hot mounting piece (10) is fixedly connected in outer sleeve (6), hot mounting piece (10) is coaxial with main shaft (11); Outer sleeve (6) is fixedly connected with the telescopic part of double-acting jack (8) by jack conversion head (2), one end of jack conversion head (2) is fixedly installed on the telescopic part of double-acting jack (8), and the other end of jack conversion head (2) is provided with a concentric pin hole on the outer sleeve (6), and a pin (3) is installed in the pin hole; Adapter sleeve (1) is provided with long circular hole shaped guide slot matched with pin (3); Hot mounting piece (10) is fixedly connected on outer sleeve (6) by ejecting flange (7).

2. A two-way self-stable thermo-charging component ejection mechanism according to claim 1, characterized in that, Threaded hole is arranged at the end of adapter sleeve (1), and external thread is arranged at the end of main shaft (11) matched with the threaded hole at the end of adapter sleeve (1).

3. A two-way self-stable thermo-charging component ejection mechanism according to claim 1, characterized in that, Jack pad (4) and top rib plate (5) are fastened on the body part of double-acting jack (8) by inner hexagonal screw (9), and adapter sleeve (1) is fixedly connected on jack pad (4).

4. A two-way self-stable thermo-charging ejection mechanism according to claim 1, wherein, Ejecting flange (7) is two semicircular ring bodies with boss in inner ring, and the boss is clamped into the groove arranged on hot mounting piece (10).

5. A two-way self-stable thermo-charging ejection mechanism according to claim 4, wherein, The ejecting flange (7) is quenched and heat treated.

6. A two-way self-stressing ejection mechanism according to claim 5, wherein, The material of the ejecting flange (7) is 42CrMo.

7. A two-way self-stable thermo-charging ejection mechanism as claimed in claim 1, wherein, The material of the pin (3) and outer sleeve (6) is 42CrMo.

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