An automatic screw discharge device for an air compressor

Abstract

This invention relates to an automatic screw extrusion device for an air compressor, comprising an extrusion device body whose operation is controlled by a control system. The extrusion device body contains an upper positioning mechanism and a lower positioning mechanism. The upper end of the upper positioning mechanism is equipped with a variable-diameter telescopic oil pump. Based on the outer diameter of different screw models and the inner diameter of the screw bearing, the appropriate telescopic setting is selected, allowing the tip of the oil pump to penetrate deep into the compressor head component during screw extrusion. This prevents damage to the bearing and compressor head component while applying continuous force. The upper positioning mechanism includes adjustable limit baffles for positioning the compressor head component; the horizontal position of these baffles affects the extrusion effect, ensuring the horizontal state of the adjustable limit baffles on both sides. The lower positioning mechanism includes a screw guide and fixing device for positioning and protecting the screw during continuous, slow extrusion, preventing screw wobbling and impact, and reducing damage caused by component disassembly.

Description

Technical Field

[0001] This invention relates to the field of air compressor technology, and more specifically to an automatic screw extrusion device for an air compressor. Background Technology

[0002] The screw structure of a screw air compressor, assembled with the compressor head assembly, forms the compressor's operating mechanism. Air is compressed by the movement of the screw; therefore, the installation and appearance of the screw play a crucial role in the compressor's operation. When an air compressor malfunctions or requires disassembly for routine maintenance, the screw must be removed from the compressor head assembly for inspection. Due to the tight fit between the screw and the bearings, a stable axial force is required to push it out of the head assembly during disassembly. Whether the screw experiences balanced stress, surface damage, or stress deformation during disassembly determines its reusability. Currently, screw disassembly relies primarily on simple oil pump compression, lacking stable positioning and protection, and is highly dependent on the operator's skill level, easily leading to impact damage and eventual failure.

[0003] Existing technologies typically employ a general-purpose press. The head assembly of the screw to be disassembled is placed on a storage fixture, positioned below the oil pump. An ejector fixture, smaller than the upper diameter of the screw, is placed above the screw. The center of the oil pump is visually aligned with the center of the ejector fixture. The oil pump is then started to slowly apply pressure, ejecting the screw from the head assembly. There is no supporting device below the head assembly; the ejected screw is removed manually. Throughout the process, one person operates the pressurizing equipment, another stabilizes the ejector and storage fixtures, and another person supports the slowly ejected screw as the oil pump pressure is transmitted to it to prevent damage. This process requires significant manpower, is complex, and the manual alignment of the oil pump and application of force increases the risk of accidents and potential safety hazards. Furthermore, after the screw is ejected, its weight makes it unstable for a single person to lift, increasing the risk of collisions with the other screw in a twin-screw mechanism or with other fixtures and parts, potentially causing irreparable damage.

[0004] For example, Chinese utility model patent CN 210161065 U discloses a disassembly device. This disassembly device includes a support assembly, a first pressure post, and a second pressure post. The support assembly is configured to support the two sides of a housing with a ball joint. The end face of the first pressure post can contact the top of the ball-end screw and press the ball-end screw out of the ball joint. The diameter of the first pressure post is less than or equal to the diameter of the top of the ball-end screw. The second pressure post is disposed on the first pressure post, and the diameter of the second pressure post is greater than the diameter of the first pressure post. The end face of the second pressure post can contact the top of the ball joint and press the ball joint out of the housing. The disassembly device provided by this utility model has a simple structure, is easy to operate, saves time and effort, and has high disassembly efficiency, avoiding damage to the housing during disassembly. However, this disassembly device can only be used for ball-end screws, resulting in a narrow application range, and it is prone to breakage during disassembly and assembly. Summary of the Invention

[0005] To address the aforementioned technical deficiencies in existing technologies, the present invention aims to provide an automatic screw ejection device for air compressors. This device enables the automatic ejection of the screw structure during disassembly of the air compressor, providing positioning, speed, and protection. It facilitates screw removal after disassembly, preventing damage from impacts that render the screw unusable. Furthermore, this device reduces the number of personnel required for air compressor screw disassembly from three to one, and improves operational safety.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0007] An automatic screw extrusion device for air compressors includes an extrusion device body, the operation of which is controlled by a control system. The extrusion device body contains an upper positioning mechanism and a lower positioning mechanism. The upper end of the upper positioning mechanism is equipped with a variable-diameter telescopic oil pump, which can select the appropriate telescopic setting based on the outer diameter of the screw and the inner diameter of the screw bearing of different air compressor models. This allows the tip of the oil pump to penetrate deep into the compressor head assembly during screw extrusion, thus preventing damage to the bearing and the air compressor head assembly 4 under continuous force application. The upper positioning mechanism includes a set of adjustable limit baffles for positioning the air compressor head assembly. The horizontality of these baffles is crucial to the extrusion effect; the horizontal state of the adjustable limit baffles on both sides must be ensured. The lower positioning mechanism includes a screw guide and fixing device for positioning and protecting the screw during continuous, slow extrusion, preventing screw shaking and impact, and reducing damage caused by component disassembly.

[0008] Preferably, the adjustable limiting baffle is a plate with rounded ends and grooves on its front and rear end faces, allowing only horizontal displacement with the outer shell of the extrusion device. A limiting oil pump is located at the tail of the adjustable limiting baffle to control its horizontal movement. When there is no operational need, the limiting oil pumps on both sides return to their relaxed state, and the gap of the adjustable limiting baffle is at its maximum value. If operation is required at this time, the air compressor head assembly is placed inside the equipment, the limiting oil pumps are turned on to the preset value, and the head assembly can be laterally inserted and positioned.

[0009] In any of the above embodiments, it is preferred that the inner side of the arc-shaped structure of the adjustable limiting baffle has multiple elongated adjustment holes to facilitate the installation and positioning of the head components of different models of air compressors.

[0010] In any of the above embodiments, it is preferred that the end of the set of screw guide fixing devices is provided with a semi-circular arc plate; a base plate is provided below one of the screw guide fixing devices, which can support the screw and prevent it from falling into the equipment when the screw is removed.

[0011] In any of the above embodiments, it is preferred that the screw guide fixing device is located on the two end side plates of the screw fixing platform; the screw guide fixing device and the screw fixing platform are fixedly connected by an adjusting oil pump.

[0012] In any of the above embodiments, it is preferred that the surfaces of the semi-circular plate and the base plate on the screw guide fixing device are made of hard rubber or nylon material to protect the screw.

[0013] In any of the above embodiments, it is preferred that the upper end of the middle part of the air compressor head component has a threaded hole, which is engaged with an elongated adjustment hole on the adjustable limit baffle by a bolt, thereby clamping the adjustable limit baffle onto the air compressor head component.

[0014] In any of the above solutions, it is preferred that the two end side plates of the screw fixing platform have slide rails, and the slide rails are equipped with slide rail motors. The slide rails are driven by the slide rail motors in the front-back direction, and the screws are clamped and positioned by adjusting the oil pumps in the left-right direction, thereby adjusting the front-back and left-right positions of the screw guide fixing device.

[0015] In any of the above embodiments, it is preferred that the bottom of the screw fixing platform abuts against the lifting platform, and the lifting platform is driven by a lifting oil pump.

[0016] During operation, turn on the lifting oil pump and use the lifting platform to guide the screw into the fixing device and send it to a position close to the screw to be disassembled; after the screw is disassembled, the lifting platform can be controlled to move the screw fixing platform down to avoid the area of ​​the machine head components, and the slide rail motor can be restarted to send the disassembled screw out for easy retrieval.

[0017] In any of the above solutions, the preferred embodiment is that the control system realizes the operation control of the variable diameter telescopic oil pump, the limit oil pump, the regulating oil pump, the screw fixing platform, the slide rail motor and the lifting platform through electrical connection. At the same time, the real-time pressure data of each oil pump and the position data of each tooling are fed back to the control system through displacement sensors and pressure sensors, and stored to form the screw disassembly data of each model of air compressor. In mass production, the model can be directly entered for automatic positioning to complete the operation.

[0018] In summary, the automatic screw ejection device for air compressors of the present invention has the following advantages: This device enables the automatic ejection of the screw structure during disassembly of the air compressor, providing positioning, speed, and protection; after disassembly, the screw can be moved to a position that does not obstruct the compressor head to remove it, effectively avoiding the problem of the screw being unusable due to impact damage after ejection; this device can reduce the number of workers required for the air compressor screw disassembly process from 3 to 1, significantly improving work efficiency and enhancing operational safety, and enabling batch deployment in maintenance lines for various air compressor models; the automatic screw ejection device for air compressors provided by the present invention integrates a lifting structure, guide rail structure, tooling and equipment groove positioning design, and a universal design for different product models. Data import is achieved through displacement and pressure sensors, enabling automated production. Data collection can refine process requirements and ensure product quality; the device design particularly emphasizes the linkage of multiple displacement states, the protection of the screw's condition during disassembly, and the safety of operators, minimizing personal injury and product damage, thus realizing the concepts of safe and lean production.

[0019] Explanation of icon numbers

[0020] 2. Extrusion device body, 3. Variable diameter telescopic oil pump, 4. Air compressor head assembly, 5. Adjustable limit baffle, 51. Slide groove, 6. Screw guide and fixing device, 7. Limiting oil pump, 8. Adjusting oil pump, 9. Screw fixing platform, 10. Lifting platform, 11. Lifting oil pump, 12. Slide rail, 13. Slide rail motor, 14. Screw. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a preferred embodiment of the automatic screw extrusion device for an air compressor according to the present invention.

[0022] Figure 2 Automatic screw discharge device for air compressors according to the present invention Figure 1 A schematic diagram of the lateral structure of the preferred embodiment is shown.

[0023] Figure 3 Automatic screw discharge device for air compressors according to the present invention Figure 1A schematic diagram of the internal structure of the preferred embodiment is shown. Detailed Implementation

[0024] The following description is merely exemplary and not intended to limit this disclosure, its application, or its uses. The specific embodiments of the automatic screw discharge device for air compressors of the present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 , Figure 2 The diagram shows a preferred embodiment of the automatic screw extrusion device for air compressors according to the present invention. The automatic screw extrusion device for air compressors of the present invention includes an extrusion device body 2, the operation of which is controlled by a control system. The extrusion device body 2 is equipped with an upper positioning mechanism and a lower positioning mechanism. The upper end of the upper positioning mechanism is equipped with a variable-diameter telescopic oil pump 3, which can select the appropriate telescopic setting based on the outer diameter of the screw and the inner diameter of the screw bearing of different models of air compressors. This allows the tip of the oil pump to penetrate deep into the compressor head component during screw extrusion, thereby avoiding damage to the bearing and the air compressor head component 4 under continuous force application. The upper positioning mechanism includes a set of adjustable limit baffles 5 for positioning the air compressor head component 4. The horizontality of these baffles is crucial to the extrusion effect; the horizontal state of the adjustable limit baffles 5 on both sides must be ensured. The lower positioning mechanism includes a set of screw guide and fixing devices 6 for positioning and protecting the screw during continuous and slow extrusion, preventing screw shaking and impact, and reducing damage caused by component disassembly.

[0026] See Figure 3 As shown, the automatic screw discharge device for an air compressor according to the present invention Figure 1 A schematic diagram of the internal structure of the preferred embodiment is shown.

[0027] In this embodiment, the adjustable limiting baffle 5 is a plate with rounded ends and grooves 51 on its front and rear end faces, allowing only horizontal displacement with the outer shell of the extrusion device body 2. A limiting oil pump 7 is provided at the tail of the adjustable limiting baffle 5 to control its horizontal movement. When there is no operational need, the limiting oil pumps 7 on both sides return to their relaxed state, and the gap of the adjustable limiting baffle 5 is at its maximum value. If operation is required at this time, the air compressor head component 4 is placed into the equipment, and the limiting oil pump 7 is turned on to the preset value, allowing the head component 4 to be installed and positioned laterally.

[0028] In this embodiment, the inner side of the arc-shaped structure of the adjustable limiting baffle 5 is provided with multiple elongated adjustment holes, which facilitates the installation and positioning of air compressor head components of different models.

[0029] In this embodiment, the end of the set of screw guide fixing devices 6 is provided with a semi-circular arc plate; a base plate 61 is provided below one of the screw guide fixing devices 6, which can support the screw 14 after it is removed to prevent it from falling into the equipment.

[0030] In this embodiment, the screw guide fixing device 6 is located on the two end side plates of the screw fixing platform 9; the screw guide fixing device 6 and the screw fixing platform 9 are fixedly connected by the adjusting oil pump 8.

[0031] In this embodiment, the surfaces of the semi-circular plate and the base plate 61 on the screw guide fixing device 6 are made of hard rubber or nylon material, which protects the screw 14.

[0032] In this embodiment, the upper end of the middle part of the air compressor head component 4 is provided with a threaded hole. The threaded hole is engaged with the elongated adjustment hole on the adjustable limit baffle 5 by a bolt, thereby clamping the adjustable limit baffle 5 onto the air compressor head component 4.

[0033] In this embodiment, slide rails 12 are provided on the side plates at both ends of the screw fixing platform 9. A slide rail motor 13 is provided on the slide rail. The slide rail motor 13 drives the slide rail 12 in the front-back direction, and the oil pump 8 is used to clamp and position the screw in the left-right direction, thereby adjusting the front-back and left-right positions of the screw guide fixing device 6.

[0034] In this embodiment, the bottom of the screw fixing platform 9 abuts against the lifting platform 10, which is driven by the lifting oil pump 11.

[0035] During operation, turn on the lifting oil pump 11 and use the lifting platform 10 to guide the screw into the fixing device 6 to a position close to the screw to be disassembled; after the screw 14 is disassembled, the lifting platform 10 can be controlled to move the screw fixing platform 9 down to avoid the range of the machine head component 4, and the slide rail motor 13 can be restarted to send the disassembled screw out for easy retrieval.

[0036] In this embodiment, the control system realizes the operation control of the variable diameter telescopic oil pump 3, the limit oil pump 7, the regulating oil pump 8, the screw fixing platform 9, the slide rail motor 13, and the lifting platform 10 through electrical connection. At the same time, the real-time pressure data of each oil pump and the position data of each tooling are fed back to the control system through displacement sensors and pressure sensors, and stored to form the screw disassembly data of each model of air compressor. In mass production, the model can be directly entered for automatic positioning to complete the operation.

[0037] The working process of the automatic screw extrusion device for air compressors of the present invention is as follows:

[0038] When the air compressor head component needs to be disassembled, after positioning the air compressor head component 4 to the limit baffle 5, adjust the variable diameter telescopic oil pump 3 to the preset position and leave a certain margin with the upper end face of the screw 14. Then, adjust the limit baffle 5 and the limit oil pump 7 again so that the screw 14 is roughly aligned with the diameter center of the variable diameter telescopic oil pump 3 to avoid uneven force or the oil pump applying force to the head and bearing.

[0039] Then, the lower end of the screw 14 is guided into the fixing device 6, which is used to position and protect the screw 14 when it is continuously and slowly pressed out, so as to avoid the screw 14 shaking and bumping, and reduce the loss caused by disassembly of the parts. The screw 14 is clamped by the sliding rail motor 13 driving the sliding rail 12 in the front and back direction, and by the clamping and positioning method of the adjusting oil pump 8 in the left and right direction (a base plate 61 is provided under the fixing device 6 on one side, which can support the screw 14 after it is removed to prevent it from falling into the equipment. The positioning of the front and rear sliding rails 12 can not only align the position of the machine head 4, but also remove the screw 14 with the assistance of the lifting platform 10 after disassembly, so as to avoid secondary damage to the parts and personal injury to the operator when the operator puts his hands into the equipment to pick it up).

[0040] Next, the screw 14 is guided into the fixing device 6 and adjusted to be almost aligned with the screw 14 to be disassembled. The adjusting oil pump 8 is used to bring the two sides of the guiding fixing device 6 closer to the middle, so that the clamping limit of the two semi-circular arcs is just or slightly larger than the outer diameter of the spiral surface of the screw 14, so that it can enter the guiding fixing device 6 after disassembly and avoid random swinging and bumping.

[0041] Turn on the lifting oil pump 11 and use the lifting platform 10 to send the guide fixing device 6 to a position close to the screw 14 to be disassembled. Then turn on the variable diameter telescopic oil pump 3 to apply its force to the screw 14 and press it out slowly and evenly. During the pressing process, the operator observes that the screw 14 enters the guide fixing device 6 smoothly. If fine adjustment is required, the variable diameter telescopic oil pump 3 should be turned off first.

[0042] After the screw 14 is finally disassembled, the lifting platform 10 can be controlled to move the screw fixing platform 9 down to avoid the area of ​​the machine head component 4, and the slide rail motor 13 can be restarted to send the disassembled screw out for easy retrieval.

[0043] In summary, the automatic screw extrusion device for air compressors of the present invention has the following advantages: A variable-diameter telescopic oil pump 3 is provided for the extrusion process of screws of different sizes, facilitating the implementation of various scenarios and ensuring concentricity during the extrusion process; a screw guide and fixing device 6 is provided at the lower end of the screw 4 to enable displacement changes in multiple directions such as front, back, left, right, up, and down; displacement is achieved using a slide rail 12, a longitudinally adjustable limit baffle 5, a limit oil pump 7, and a lifting oil pump 11, enabling application scenarios for different models; the adjustable limit baffle 5 and the adjustable screw guide and fixing device 6 can be applied to the disassembly process of screws for various models of air compressors, and can be used as a reference in extrusion and insertion processes with similar structures, demonstrating a wide range of application prospects.

[0044] It will be readily understood by those skilled in the art that the automatic screw discharge device for air compressors of the present invention comprises any combination of the parts described in this specification. Due to space limitations and for the sake of brevity, these combinations are not described in detail here; however, after reading this specification, the scope of the invention, constituted by any combination of the parts described herein, is self-evident.

Claims

1. An automatic screw extrusion device for an air compressor, comprising an extrusion device body (2), wherein the operation of the extrusion device body is controlled by a control system, characterized in that: The body (2) of the extrusion device is equipped with an upper positioning mechanism and a lower positioning mechanism. The upper end of the upper positioning mechanism is equipped with a variable diameter telescopic oil pump (3), which can select the telescopic gear according to the outer diameter of the screw and the inner diameter of the screw bearing of different models of air compressors. The upper positioning mechanism includes a set of adjustable limit baffles (5) for positioning the air compressor head component (4). The lower positioning mechanism includes a set of screw guide fixing devices (6) for positioning and protecting the screw when it is continuously and slowly extruded. The adjustable limit baffle (5) is a plate with an arc-shaped end, and its front and rear end faces are provided with sliding grooves (51). The tail of the adjustable limit baffle (5) is equipped with a limit oil pump. (7); The inner side of the arc-shaped structure of the adjustable limit baffle (5) has multiple elongated adjustment holes; the end of the set of screw guide fixing devices (6) is provided with a semi-circular arc plate; a base plate (61) is provided below one of the screw guide fixing devices (6); the screw guide fixing device (6) is located on the two end side plates of the screw fixing platform (9); the screw guide fixing device (6) and the screw fixing platform (9) are fixedly connected by the adjusting oil pump (8); the two end side plates of the screw fixing platform (9) are provided with slide rails (12), and the slide rails are provided with slide rail motors (13); the bottom of the screw fixing platform (9) abuts against the lifting platform (10), and the lifting platform (10) is powered by the lifting oil pump (11). The control system controls the operation of the variable diameter telescopic oil pump (3), limit oil pump (7), regulating oil pump (8), screw fixing platform (9), slide rail motor (13), and lifting platform (10) through electrical connections. At the same time, it feeds back the real-time pressure data of each oil pump and the position data of each tooling to the control system through displacement sensors and pressure sensors, and stores the data to form the screw disassembly data of each model of air compressor. During mass production, the model can be directly entered for automatic positioning to complete the operation. During disassembly, after positioning the air compressor head component (4) to the limit baffle (5), the variable diameter telescopic oil pump (3) is adjusted to the preset position, leaving a gap between it and the upper end face of the screw (14). With a certain margin, the limit baffle (5) and the limit oil pump (7) are adjusted again to make the screw (14) roughly aligned with the center of the diameter of the variable diameter telescopic oil pump (3); the lower end of the screw (14) is inserted into the fixing device (6), the slide rail motor (13) drives the slide rail (12) in the front and back direction, and the adjusting oil pump (8) is used to clamp and position it in the left and right direction; the screw (14) is inserted into the fixing device (6) and adjusted to be almost aligned with the screw (14) to be disassembled, and the adjusting oil pump (8) is used to bring the two sides of the insertion fixing device (6) closer to the middle, so that the clamping limit of the two semicircles is just or slightly larger than the outer diameter of the spiral surface of the screw (14), so that it can enter the insertion fixing device (6) after disassembly;Turn on the lifting oil pump (11), and use the lifting platform (10) to send the guide fixing device (6) to a position close to the screw (14) to be disassembled. Then, turn on the variable diameter telescopic oil pump (3) to apply its force to the screw (14) and slowly and evenly press it out. During the pressing process, the operator observes that the screw (14) smoothly enters the guide fixing device (6). If fine adjustment is required, the variable diameter telescopic oil pump (3) should be turned off first. Finally, after the screw (14) is disassembled, the lifting platform (10) can be controlled to move the screw fixing platform (9) down to avoid the range of the machine head component (4), and the slide rail motor (13) can be restarted to send the disassembled screw out.

2. The automatic screw discharge device for an air compressor as described in claim 1, characterized in that: The surfaces of the semi-circular arc plate and the base plate (61) on the screw guide fixing device (6) are made of hard rubber or nylon material.

3. The automatic screw discharge device for an air compressor as described in claim 1, characterized in that: The upper part of the middle part of the air compressor head component (4) has a threaded hole, which is connected to the elongated adjustment hole on the adjustable limit baffle (5) by a bolt.

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