A structure for pressing water-slinging rings and an automatic pressing machine

Abstract

This utility model discloses a structure and automatic pressing machine for press-fitting a water-slinging ring. The structure for press-fitting the water-slinging ring includes a storage mold and a pressing mold. The pressing mold includes an integrally formed connecting section and a pressing mold guide post. The pressing mold guide post has a columnar cavity at its axis and a pressing ring cavity connected to the columnar cavity at its lower end. The storage mold is longitudinally limited and slidably fitted outside the pressing mold guide post and has a storage ring cavity located directly below the pressing ring cavity. The storage ring cavity has an inlet extending to the outer circumference of the storage mold. The inner diameter of the columnar cavity is larger than the outer diameter of the motor shaft and the depth is larger than the distance between the flange ring and the end face of the motor shaft. The diameter of the pressing ring cavity is smaller than the outer diameter of the water-slinging ring but larger than the inner diameter of the water-slinging ring. An annular pressing platform is formed on the lower end face of the pressing mold guide post. This utility model has a simple structure and can realize the fitting of the water-slinging ring onto the motor shaft and press-fitting it onto the flange ring on the end face of the motor.

Description

Technical Field

[0001] This utility model relates to the field of motor assembly technology, and in particular to a structure and automatic pressing machine for pressing water-spinning rings. Background Technology

[0002] A water-slinging ring is a sealing ring structure installed on the motor shaft to protect the inside of the motor from water ingress, thereby extending the service life of the motor.

[0003] Chinese utility model patent CN220007661U discloses a tooling for press-fitting a water-slinging ring, used to assist in installing the water-slinging ring onto a flange ring on the end face of a motor shaft. The tooling includes a body having: a guide portion capable of being inserted into the inner hole of the flange and able to push the tooling to slide relative to the flange along the extending direction of the guide portion; and a press-fitting portion including a supporting surface and a pressing surface, wherein the water-slinging ring is fitted onto the press-fitting portion, the supporting surface abuts against the side of the water-slinging ring, the pressing surface abuts against the annular surface of the water-slinging ring, and the guide portion protruding from the pressing surface.

[0004] While this fixture can push the water-slinging ring onto the flange with an interference fit and prevent deformation, it is only suitable for flanges with internal bores. For many motors, the flange face is integrally formed with the motor end face, and the motor shaft is located at the center hole of the flange. Clearly, this auxiliary press-fitting fixture is unsuitable. Therefore, it is necessary to design a new structure and an automatic press-fitting machine for pressing water-slinging rings to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a structure and an automatic pressing machine for pressing water-slinging rings, thereby fitting the water-slinging rings onto the motor shaft and pressing them onto the flange rings on the motor end face.

[0006] The technical solution to achieve the purpose of this utility model is:

[0007] A structure for press-fitting a water-slinging ring includes a storage mold and a pressing mold. The pressing mold includes an integrally formed connecting section and a pressing mold guide post. The pressing mold guide post has a columnar cavity at its axis and a pressing ring cavity communicating with the columnar cavity at its lower end. The storage mold is longitudinally limited and slidably fitted outside the pressing mold guide post and has a storage ring cavity located directly below the pressing ring cavity. The storage ring cavity has an inlet extending to the outer circumference of the storage mold. The inner diameter of the columnar cavity is greater than the outer diameter of the motor shaft and the depth is greater than the distance between the flange ring and the end face of the motor shaft. The diameter of the pressing ring cavity is smaller than the outer diameter of the water-slinging ring and larger than the inner diameter of the water-slinging ring. An annular pressing platform is formed on the lower end face of the pressing mold guide post.

[0008] Furthermore, the bottom of the storage ring cavity is provided with an inwardly extending annular boss, thereby forming a guide groove in the shape of a frustum-shaped cone with a larger upper part and a smaller lower part between the upper part and the bottom of the storage ring cavity.

[0009] Furthermore, the bottom of the storage mold is provided with an annular positioning step surface that is adapted to the end face of the motor, and the annular positioning step surface is coaxially arranged with the storage ring cavity.

[0010] Furthermore, the storage mold includes a first movable mold and a take-out mold detachably installed at the bottom of the first movable mold. The first movable mold is slidably fitted on the pressure mold guide post, and the storage ring cavity is located on the take-out mold.

[0011] Furthermore, a first axially extending groove is provided on the outer peripheral surface of the mold guide post, and a sliding pin with a gap inserted into the first groove is fixed on the first movable mold.

[0012] Furthermore, the top of the material taking mold is provided with a groove that connects to the storage ring cavity, and the groove and the bottom of the first movable mold form the inlet ring.

[0013] Furthermore, the groove has a fan-shaped arc structure, and its two sides are tangent to the outer peripheral surface of the storage ring cavity.

[0014] Furthermore, the upper limit sliding sleeve of the mold guide post is provided with a second movable mold located above the storage mold, and a linear drive mechanism is connected between the second movable mold and the storage mold.

[0015] Furthermore, a buffer assembly is provided between the second active module and the connecting section.

[0016] A press-fitting machine for press-fitting water-slinging rings includes the structure for press-fitting water-slinging rings as described above, a worktable for fixing the motor to be processed, and an electric cylinder fixedly mounted directly above the worktable, wherein the output end of the electric cylinder is coaxially fixedly connected to the connecting section.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] (1) In this utility model, the water-throwing ring to be pressed is placed in the storage ring cavity in advance through the inlet ring. By applying a downward axial force to the pressing mold, the storage mold and the pressing mold are driven to descend synchronously so that the water-throwing ring below reaches the flange ring. Since the water-throwing ring and the flange ring are interference fit and the storage mold and the pressing mold guide post are slidably connected in the longitudinal direction, the position of the storage mold remains unchanged at this time, and the pressing mold guide post continues to press down, so that the water-throwing ring is firmly pressed on the flange ring by the annular pressing table, thereby realizing auxiliary pressing.

[0019] (2) By setting a guide groove, this utility model eliminates the swaying gap between the water-throwing ring and the storage ring cavity, ensuring the coaxiality of the water-throwing ring with the flange ring during press-fitting, and avoiding the failure of waterproof seal due to crushing.

[0020] (3) By setting an annular positioning step surface coaxial with the storage ring cavity, this utility model improves the positional accuracy of the storage mold and the flange ring, and further improves the pressing accuracy of the water-throwing ring.

[0021] (4) The material storage mold of this utility model adopts a split structure and the storage ring cavity is set on the detachable material taking mold, thereby realizing the replacement of the storage ring cavity and meeting the pressing requirements of more specifications of water-throwing rings.

[0022] (5) This utility model achieves the sliding installation of the storage mold and the pressure mold guide post through the cooperation of the sliding pin and the strip groove. The structure is simple. The length of the strip groove limits the movement stroke of the sliding pin, thereby limiting the displacement of the storage mold.

[0023] (6) This utility model has a simple structure and is easy to process by machining a groove on the top of the material taking mold and naturally forming an inlet ring when it is installed at the bottom of the first movable mold.

[0024] (7) The present invention sets the groove into a fan-shaped structure, so that the inlet of the ring inlet is larger than the outlet, making it easier to place the water-slinging ring inward.

[0025] (8) By adding a second movable mold and a linear drive mechanism between the second movable mold and the storage mold, the present invention can adjust the water-slinging ring horizontally by pulling the storage mold upward after the water-slinging ring is placed in the storage ring cavity, thereby avoiding the water-slinging ring tilting and causing unqualified pressing.

[0026] (9) This utility model reduces the vibration generated during pressing by setting a buffer component.

[0027] (10) This utility model uses a workbench to fix the motor to be processed, and drives the structure for pressing the water-slinging ring to move up and down through an electric cylinder, thereby building an automatic pressing machine to automatically mount the water-slinging ring on the motor shaft and press it onto the flange ring on the end face of the motor. Attached Figure Description

[0028] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 This is a perspective view of the present utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the material handling mold of this utility model.

[0032] The labels in the attached diagram are:

[0033] Material storage mold 1, storage ring cavity 1-1, guide groove 1-1-1, inlet ring 1-2, first movable mold 1-3, material taking mold 1-4, groove 1-4-1, annular positioning step surface 1-4-2, annular boss 1-5, pressure mold 2, connecting section 2-1, pressure mold guide post 2-2, columnar cavity 2-2-1, pressure ring cavity 2-2-2, first strip groove 2-2-3, second movable mold 3, first connecting plate 4, second connecting plate 5, cylinder 6, spring 7. Detailed Implementation

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] (Example 1)

[0036] This embodiment provides a press-fitting machine for pressing water-slinging rings onto the flange rings on the end face of a motor. It includes structures for pressing the water-slinging rings, a worktable for fixing the motor to be processed, and an electric cylinder mounted directly above the worktable. The worktable uses an existing automatic gripper structure to clamp and fix the motor, and the output end of the electric cylinder is vertically downward. The structure for pressing the water-slinging rings is as follows: Figures 1 to 3 As shown, the device includes a storage mold 1 and a pressing mold 2. The pressing mold 2 includes an integrally formed connecting section 2-1 and a pressing mold guide post 2-2. The connecting section 2-1 is coaxially fixed to the output end of the electric cylinder, thereby enabling the electric cylinder to drive the pressing mold 2 to move up and down. The pressing mold guide post 2-2 has a columnar cavity 2-2-1 at its axis, and a pressing ring cavity 2-2-2 communicating with the columnar cavity 2-2-1 at its lower end. The storage mold 1 is longitudinally limited and slidably fitted outside the pressing mold guide post 2-2, and has a storage ring cavity 1-1 located directly below the pressing ring cavity 2-2-2. The storage ring cavity 1-1 has an inlet 1-2 extending to the outer circumference of the storage mold 1. The water-throwing ring enters through the inlet 1-2, and is pushed into the storage ring cavity 1-1 by means of a flat pushing plate. The inner diameter of the cylindrical cavity 2-2-1 is larger than the outer diameter of the motor shaft, and its depth is greater than the distance between the flange ring and the end face of the motor shaft, ensuring that there is no movement interference with the motor shaft during the entire pressing process. The diameter of the pressure ring cavity 2-2-2 is smaller than the outer diameter of the water-slinging ring but larger than the inner diameter of the water-slinging ring. An annular pressure platform is formed on the lower end face of the mold guide post 2-2, ensuring that the annular pressure platform falls on the orthographic projection surface of the water-slinging ring, thereby pushing the water-slinging ring downward.

[0037] Specifically, the storage mold 1 includes a first movable mold 1-3 and a take-up mold 1-4 mounted on the bottom of the first movable mold 1-3 by screws, so that the take-up mold 1-4 can be detachably mounted on the first movable mold 1-3. A first strip groove 2-2-3 extending axially is formed on the outer peripheral surface of the pressure mold guide post 2-2. A sliding pin is fixed on the first movable mold 1-3 with a gap inserted into the first strip groove 2-2-3, thereby realizing the sliding installation of the storage mold 1 and the pressure mold guide post 2-2. The structure is simple. The length of the strip groove 2-2-3 limits the movement stroke of the sliding pin, thereby limiting the displacement of the storage mold 1.

[0038] The ring storage cavity 1-1 is located on the material taking mold 1-4, thereby enabling the replacement of the ring storage cavity 1-1 and meeting the pressing requirements of more specifications of water-slinging rings. The top of the material taking mold 1-4 has a groove 1-4-1 that connects to the ring storage cavity 1-1. The groove 1-4-1 and the bottom of the first movable mold 1-3 form an inlet 1-2, which is easy to process. The groove 1-4-1 is designed with a fan-shaped arc structure, and its two sides are tangent to the outer peripheral surface of the ring storage cavity, making the inlet of the inlet 1-2 larger than the outlet, which makes it easier to place the water-slinging ring inward.

[0039] The bottom of the storage ring cavity 1-1 is provided with an inwardly extending annular boss 1-5, thereby forming a truncated cone-shaped guide groove 1-1-1 between the upper and lower parts of the storage ring cavity 1-1. This eliminates the swaying gap between the water-slinging ring and the storage ring cavity 1-1, ensuring the coaxiality of the water-slinging ring with the flange ring during press-fitting and preventing crushing that could lead to waterproof seal failure. The bottom of the material taking mold 1-4 is also provided with an annular positioning step surface 1-4-2 that matches the end face of the motor. The annular positioning step surface 1-4-2 is coaxially arranged with the storage ring cavity 1-1, thereby improving the positional accuracy of the storage mold 1 and the flange ring, and further improving the press-fitting accuracy of the water-slinging ring.

[0040] Because there is a certain swaying gap between the water-throwing ring and the ring-storage cavity 1-1, although the guide groove 1-1-1 ultimately eliminates the swaying gap, the water-throwing ring will inevitably tilt when it falls from the upper part of the ring-storage cavity 1-1 into the guide groove 1-1-1. If it is directly pressed, it is very likely to deform. Therefore, in this embodiment, the second movable mold 3 located above the first movable mold 1-3 is limited and slidably sleeved on the mold guide post 2-2 in the same way as the first movable mold 1-3. The sides of the first movable mold 1-3 and the second movable mold 3 are respectively fixedly mounted with a first connecting plate 4 and a second connecting plate 5 arranged longitudinally. A cylinder 6 is fixedly mounted on the second connecting plate 5 as a linear drive mechanism. The piston rod of the cylinder 6 is set vertically downward and fixedly connected to the first connecting plate 4 through a screw.

[0041] After the water-slinging ring is placed in the storage ring cavity 1-1, it first falls into the guide groove 1-1-1. The cylinder 6 pulls the storage mold 1 upwards, and the pressing mold guide post 2-2 moves downwards relative to it until the annular pressing platform contacts the water-slinging ring. The annular pressing platform pre-presses the water-slinging ring, adjusting its horizontal direction and preventing tilting that could lead to improper pressing. Then, the electric cylinder drives the pressing mold 2 downwards, lowering the entire pressing structure. The material-retrieving mold 1-4 contacts the end face of the motor below. At this point, the pressing mold 2 continues to descend, completing the pressing process via the annular pressing platform. After pressing, the electric cylinder resets. Under gravity, the two movable molds are connected by a cylinder to form a whole, descending synchronously relative to the pressing mold 2 until the second movable mold 3 resets. Then, the cylinder resets, and the storage mold 1 resets, ready for the next pressing. To reduce vibration during pressing, a spring 7 is connected between the second movable mold 3 and the connecting section 2-1 as a buffer component. The spring also assists in the reset of the second movable mold 3.

[0042] In this embodiment, the water-slinging ring to be pressed is placed in the storage ring cavity beforehand through the inlet, and the horizontal position of the water-slinging ring is pre-adjusted. By applying a downward axial force to the pressing mold, the storage mold and the pressing mold are driven to descend synchronously, so that the lower water-slinging ring reaches the flange ring. Since the water-slinging ring and the flange ring are interference-fitted and the storage mold and the pressing mold guide post are slidably connected in the longitudinal direction, the position of the storage mold remains unchanged, and the pressing mold guide post continues to press down, thereby firmly pressing the water-slinging ring onto the flange ring through the annular pressing table, thus achieving auxiliary pressing.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structure for press-fitting a water-throwing ring, characterized in that: The device includes a storage mold and a pressing mold. The pressing mold includes an integrally formed connecting section and a pressing mold guide post. The pressing mold guide post has a columnar cavity at its axis and a pressure ring cavity at its lower end that connects to the columnar cavity. The storage mold is longitudinally limited and slidably fitted outside the pressing mold guide post and has a storage ring cavity located directly below the pressure ring cavity. The storage ring cavity has an inlet extending to the outer circumference of the storage mold. The inner diameter of the columnar cavity is greater than the outer diameter of the motor shaft and the depth is greater than the distance between the flange ring and the end face of the motor shaft. The diameter of the pressure ring cavity is smaller than the outer diameter of the water-slinging ring and larger than the inner diameter of the water-slinging ring. An annular pressing platform is formed on the lower end face of the pressing mold guide post.

2. The structure for press-fitting a water-throwing ring according to claim 1, characterized in that: The bottom of the storage ring cavity is provided with an inwardly extending annular boss, thereby forming a guide groove in the shape of a frustum-shaped cone with a larger upper part and a smaller lower part between the upper part and the bottom of the storage ring cavity.

3. The structure for press-fitting a water-throwing ring according to claim 2, characterized in that: The bottom of the storage mold is provided with an annular positioning step surface that is adapted to the end face of the motor, and the annular positioning step surface is coaxially arranged with the storage ring cavity.

4. The structure for press-fitting a water-throwing ring according to claim 2, characterized in that: The storage mold includes a first movable mold and a take-out mold detachably installed at the bottom of the first movable mold. The first movable mold is slidably fitted on the pressure mold guide post, and the storage ring cavity is located on the take-out mold.

5. The structure for press-fitting a water-throwing ring according to claim 4, characterized in that: The outer circumferential surface of the mold guide post is provided with a first strip groove extending along the axial direction, and a sliding pin is fixedly installed on the first movable mold with a gap inserted into the first strip groove.

6. The structure for press-fitting a water-throwing ring according to claim 4, characterized in that: The top of the material taking mold is provided with a groove that connects to the storage ring cavity, and the groove and the bottom of the first movable mold form the inlet ring.

7. The structure for press-fitting a water-throwing ring according to claim 6, characterized in that: The groove has a fan-shaped arc structure and its two sides are tangent to the outer peripheral surface of the storage ring cavity.

8. A structure for press-fitting a water-slinging ring according to any one of claims 2-7, characterized in that: The upper limit sliding sleeve of the pressure mold guide post is equipped with a second movable mold located above the storage mold, and a linear drive mechanism is connected between the second movable mold and the storage mold.

9. The structure for press-fitting a water-throwing ring according to claim 8, characterized in that: A buffer assembly is provided between the second active module and the connecting section.

10. A press-fitting machine for press-fitting water-slinging rings, characterized in that: The structure includes the structure for press-fitting a water-slinging ring as described in any one of claims 1 to 9, a worktable for fixing the motor to be processed, and an electric cylinder fixedly mounted directly above the worktable, wherein the output end of the electric cylinder is coaxially and fixedly connected to the connecting section.

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