Stator grabbing device for compressor stator slot paper machine

Abstract

A stator gripping device for a compressor stator slot paper machine includes a transverse slide rail and a gripping mechanism. The gripping mechanism includes a lifting cylinder, a horizontal lower plate, a sleeve, a screw, a retraction rod, a rocker arm, and a clamping bar. The sleeve is vertically positioned below the horizontal lower plate. The screw is positioned at the lower end of the telescopic rod of the lifting cylinder. The lower end of the screw is helically engaged with the internal thread of the upper section of the inner sleeve. The threads on the outer circumference of the upper section of the retraction rod are helically engaged with the internal thread of the lower section of the inner sleeve. An anti-rotation structure is provided between the inner side walls of the sleeve. The inner sleeve can rotate freely within the sleeve but cannot move axially. A support structure is provided between the sleeve and the outer circumference of the retraction rod. The gripping mechanism of the stator gripping device is of an internal support type, which can be extended into the central circular hole of the stator to achieve the stator gripping operation. At the same time, through its ingenious design, the gripping mechanism only uses a single cylinder to achieve the stator gripping operation, which can effectively simplify the control device and reduce manufacturing and maintenance costs.

Description

Technical Field

[0001] The invention relates to a stator grabbing device for a compressor stator slot paper machine, and belongs to the technical field of compressor stator production equipment. Background Art

[0002] The stator is the stationary component of the electromagnetic induction assembly of compressors, motors, and generators. It typically consists of a stator core and stator windings. In the manufacturing process of some large stators or those with high magnetic flux requirements, before winding the enameled wire onto the stator core, it is often necessary to insert insulating paper into the winding slots of the stator core for slot insulation. This paper insulates the enameled wire from the stator core, preventing direct contact and wear. It also improves the breakdown strength of the motor stator and enhances heat dissipation.

[0003] In the related art, the process of loading and unloading the slot paper machine is often to set up a loading conveyor belt and a unloading conveyor belt near the slot paper machine, and use manual transfer to transfer the stators processed in the slot paper machine to the unloading conveyor belt for unified collection and processing; and use manual transfer to transfer the stator core to be processed from the loading conveyor belt to the processing position of the slot paper machine. Or as shown in the Chinese utility model patent "Authorization Announcement No.: CN214933973U; Authorization Announcement Date: November 30, 2021; Name: An Automatic Loading and Unloading System and Slot Paper Machine", it uses a gripping device with a transverse movement function to achieve rapid loading and unloading of the stator in the slot paper machine, but this technology still has defects. It uses an external pressure multi-finger cylinder to achieve the grasping of the stator. Since the shape of the stator is variable, the external pressure grasping cannot achieve the grasping of stators with different shapes, and has the defect of poor versatility. Summary of the Invention

[0004] The purpose of the present invention is to address the technical defect of poor versatility of the loading and unloading devices used in existing trough paper machines, and to provide a new stator grabbing device. The grabbing mechanism of the stator grabbing device is of an internal support type, which can be extended into the central circular hole of the stator in the form of an inner support to achieve the grabbing operation of the stator. At the same time, the grabbing mechanism is cleverly designed and can achieve the grabbing operation of the stator with only one cylinder, which can effectively simplify the control device and reduce manufacturing and maintenance costs.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] The stator grabbing device for the compressor stator slot paper machine is located just above the stator placement platform of the stator slot paper machine and includes a transverse slide rail and a grabbing mechanism that is slidably placed on the transverse slide rail through a transverse moving device. The grabbing mechanism includes a lifting cylinder, a horizontal lower plate, a sleeve, a screw, a retraction rod, a rocker rod and a clamping strip. The sleeve is vertically placed on the lower side of the horizontal lower plate. The inner hole of the sleeve is connected to the through hole on the horizontal lower plate. The lower end of the telescopic rod of the lifting cylinder is coaxially placed with the screw. The lower end of the screw extends into the retraction rod and is spirally matched with the internal thread of the upper section of the inner sleeve of the retraction rod. The outer peripheral surface of the upper section of the retraction rod is The thread is spirally matched with the internal thread of the lower section of the inner sleeve, and an anti-rotation structure is provided between the inner side walls of the sleeve. The inner sleeve can rotate freely in the sleeve but cannot move axially. Multiple groups of expansion structures are provided between the outer circumference of the sleeve and the outer circumference of the retraction rod. Each group of expansion structures consists of two rocker rods and a clamping strip. The inner ends of the two rocker rods are hinged to the outer circumferences of the sleeve and the retraction rod respectively, and the outer ends of the two rocker rods are hinged to the clamping strip; in the initial state, when the retraction rod slides into the sleeve, the expansion structure expands outward, and when the retraction rod slides out of the sleeve, the expansion structure retracts inward.

[0007] By adopting the above technical solution, a stator gripping device for a compressor stator slot paper machine is provided. When the gripping device grips the stator, a lifting cylinder pushes the telescopic rod downward, and the horizontal lower plate and inner support structure at the lower end of the telescopic rod move downward along with it. When the horizontal lower plate abuts the upper end surface of the stator, the horizontal lower plate and the sleeve stop moving downward, and the telescopic rod and the screw at the lower end continue to move downward under the action of the lifting cylinder. The downward movement of the screw drives the inner sleeve to rotate, and the rotation of the inner sleeve drives the retraction rod upward. The retraction rod slides into the sleeve, and the support structure expands outward, clamping the inner hole of the stator in the form of an inner support. Conversely, when the telescopic rod retracts and the horizontal lower plate is blocked and cannot move further upward, the telescopic rod drives the screw to continue moving upward, and the inner sleeve rotates in the opposite direction, which in turn drives the retraction rod to slide outward of the sleeve, retracting the support structure and releasing the clamping of the stator inner hole. The grasping mechanism of the stator grasping device is of an internal support type, which can be extended into the central circular hole of the stator to realize the grasping operation of the stator in the form of an inner support. At the same time, the grasping mechanism is cleverly designed to realize the grasping operation of the stator with only one cylinder, which can effectively simplify the control device and reduce manufacturing and maintenance costs.

[0008] The present invention is further configured as follows: a baffle is provided on the lateral moving device, and the baffle is located between the rod body of the lifting cylinder and the horizontal lower plate.

[0009] By adopting the above technical solution, a baffle is provided on the lateral movement device for preventing the horizontal lower plate from moving upward endlessly. The blocking of the baffle can release the clamping of the stator inner hole by the support structure.

[0010] The present invention is further configured as follows: the lateral moving device is further provided with a guide rod passing through a through hole of the horizontal lower plate.

[0011] The present invention is further configured as follows: there are more than two guide rods, which are equally distributed around the telescopic rod.

[0012] By adopting the above technical solution, a number of guide rods are arranged in equal parts around the telescopic rod, which can effectively ensure the stable movement of the grabbing component at the lower end of the telescopic rod.

[0013] The present invention is further configured as follows: a stop structure is provided on the telescopic rod to prevent the horizontal lower plate and the sleeve from sliding down infinitely.

[0014] By adopting the above technical solution, a stop structure is provided on the telescopic rod to prevent the horizontal lower plate and the sleeve from sliding down infinitely, thereby preventing the grabbing component at the lower end of the telescopic rod from slipping off the telescopic rod.

[0015] The present invention is further configured as follows: the outer side of the clamping strip is a curved surface, and a layer of anti-slip rubber is arranged on the curved surface.

[0016] By adopting the above technical solution and adding anti-skid rubber to the curved surface of the clamping strip, a secure grip of the stator can be effectively ensured.

[0017] The main beneficial effects of the present invention are:

[0018] 1. The stator gripping device of the present invention adopts an internal support mechanism that can be inserted into the central circular hole of the stator to perform the stator gripping operation. At the same time, the gripping mechanism is cleverly designed to only use a single cylinder to perform the stator gripping operation, which can effectively simplify the control device and reduce manufacturing and maintenance costs.

[0019] 2. The stator grabbing device of the present invention is provided with a plurality of guide rods in equal parts around the telescopic rod, which can effectively ensure the stable movement of the grabbing component at the lower end of the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 This invention Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 It is a structural schematic diagram of the present invention when grabbing the stator.

[0024] In the figure, 1. slotted paper machine; 2. stator placement platform; 5. first loading platform; 6. second loading platform; 7. transverse slide rail; 8. transverse moving device; 9. lifting cylinder; 10. telescopic rod; 11. guide rod; 12. baffle; 13. horizontal lower plate; 14. sleeve; 15. screw rod; 16. retraction rod; 17. rocker arm; 18. clamping strip; 19. inner sleeve; 20. stator. DETAILED DESCRIPTION

[0025] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0026] Example 1:

[0027] like Figures 1 to 3 As shown, a stator grabbing device for a compressor stator slot paper machine is located directly above the stator placement platform 2 of the stator slot paper machine 1, including a transverse slide rail 7 and a grabbing mechanism slidably placed on the transverse slide rail 7 through a transverse moving device 8. The grabbing mechanism includes a lifting cylinder 9, a horizontal lower plate 13, a sleeve 14, a screw 15, a retraction rod 16, a rocker 17 and a clamping bar 18. The sleeve 14 is vertically placed on the lower side of the horizontal lower plate 13, and the inner hole of the sleeve 14 is connected to the through hole on the horizontal lower plate 13. The lower end of the telescopic rod 10 of the lifting cylinder 9 is coaxially mounted with the screw 15. The lower end of the screw 15 extends into the retraction rod 16 and is connected to the inner sleeve 1 of the retraction rod 16. The internal threads of the upper section of the sleeve 14 are helically engaged, and the threads on the outer circumference of the upper section of the retraction rod 16 are helically engaged with the internal threads of the lower section of the inner sleeve 19. An anti-rotation structure is provided between the inner sidewalls of the sleeve 14, allowing the inner sleeve 19 to rotate freely within the sleeve 14 but preventing axial movement. Multiple groups of expansion structures are provided between the outer circumference of the sleeve 14 and the outer circumference of the retraction rod 16. Each expansion structure consists of two rocker arms 17 and a clamping bar 18. The inner ends of the two rocker arms 17 are hinged to the outer circumferences of the sleeve 14 and the retraction rod 16, respectively, and the outer ends of the two rocker arms 17 are hinged to the clamping bar 18. The outer side of the clamping bar 16 is a curved surface with a layer of non-slip rubber. A baffle 12 is provided on the lateral movement device 8. The baffle 12 is located between the rod body of the lifting cylinder 9 and the horizontal lower plate 13. The lateral movement device 8 is further provided with a guide rod 11 passing through a through hole of the horizontal lower plate 13. There are two or more guide rods 11, which are equally distributed around the telescopic rod 10. The telescopic rod 10 is provided with a stop structure to prevent the horizontal lower plate 13 and the sleeve 14 from sliding down indefinitely.

[0028] When in use, when grabbing the stator 20, the lifting cylinder 9 pushes the telescopic rod 10 to move downward, and the horizontal lower plate 13 and the inner support structure at the lower end of the telescopic rod 10 move downward together. When the horizontal lower plate 13 abuts against the upper end surface of the stator 20, the horizontal lower plate 13 and the sleeve 14 no longer move downward, and the telescopic rod 10 and the screw rod 15 at the lower end continue to move downward under the action of the lifting cylinder 9. The downward movement of the screw rod 15 drives the inner sleeve 19 to rotate, and the rotation of the inner sleeve 19 drives the retraction rod 16 moves upward, the retraction rod 16 slides into the sleeve 14, the expansion structure expands outward, and the inner hole of the stator 20 is clamped in the form of inner support; on the contrary, when the telescopic rod 10 retracts and the horizontal lower plate 13 is blocked by the baffle 12 and cannot move further upward, the telescopic rod 10 drives the screw rod 15 to continue to move upward, and the inner sleeve 19 rotates in the opposite direction, thereby driving the retraction rod 16 to slide outward of the sleeve 14, the expansion structure retracts, and releases the clamping of the inner hole of the stator 20.

Claims

1. A stator grabbing device for a compressor stator slot paper machine, located directly above a stator placement platform (2) of a stator slot paper machine (1), characterized in that: The invention comprises a transverse slide rail (7) and a grabbing mechanism which is slidably arranged on the transverse slide rail (7) through a transverse moving device (8), wherein the grabbing mechanism comprises a lifting cylinder (9), a horizontal lower plate (13), a sleeve (14), a screw rod (15), a retraction rod (16), a rocker rod (17) and a clamping strip (18), wherein the sleeve (14) is vertically arranged on the lower side of the horizontal lower plate (13), the inner hole of the sleeve (14) is connected to the through hole on the horizontal lower plate (13), the lower end of the telescopic rod (10) of the lifting cylinder (9) is coaxially arranged with the screw rod (15), the lower end of the screw rod (15) extends into the retraction rod (16) and is spirally matched with the internal thread of the upper section of the inner sleeve (19) of the retraction rod (16), and the thread of the outer peripheral surface of the upper section of the retraction rod (16) is screwed to the inner sleeve The inner thread of the lower section (19) is spirally matched, and an anti-rotation structure is provided between the inner side walls of the sleeve (14). The inner sleeve (19) can rotate freely in the sleeve (14) but cannot move axially. A plurality of groups of expansion structures are provided between the outer peripheral surface of the sleeve (14) and the outer peripheral surface of the retraction rod (16). Each group of expansion structures consists of two rocker rods (17) and a clamping strip (18). The inner ends of the two rocker rods (17) are hinged to the outer peripheral surfaces of the sleeve (14) and the retraction rod (16) respectively, and the outer ends of the two rocker rods (17) are hinged to the clamping strip (18); in the initial state, when the retraction rod (16) slides into the sleeve (14), the expansion structure expands outward, and when the retraction rod (16) slides out of the sleeve (14), the expansion structure retracts inward.

2. The stator grabbing device for a compressor stator slot paper machine according to claim 1, characterized in that: The transverse moving device (8) is provided with a baffle (12), and the baffle (12) is located between the rod body of the lifting cylinder (9) and the horizontal lower plate (13).

3. The stator grabbing device for a compressor stator slot paper machine according to claim 2, characterized in that: The lateral moving device (8) is also provided with a guide rod (11) passing through a through hole of the horizontal lower plate (13).

4. The stator grabbing device for a compressor stator slot paper machine according to claim 3, characterized in that: There are more than two guide rods (11) which are equally distributed around the telescopic rod (10).

5. The stator grabbing device for a compressor stator slot paper machine according to claim 4, characterized in that: The telescopic rod (10) is provided with a stop structure for preventing the horizontal lower plate (13) and the sleeve (14) from sliding down indefinitely.

6. The stator grabbing device for a compressor stator slot paper machine according to claim 5, characterized in that: The outer side of the clamping strip (18) is a curved surface, and a layer of anti-slip rubber is arranged on the curved surface.

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