Grease injection auxiliary tool and grease injection device

Abstract

The utility model provides a grease injection auxiliary tool and a grease injection device. The grease injection auxiliary tool comprises a base, an installation cylinder, a grease injection rod, a hose and an elastic piece. The base is arranged on the grease injection head and is provided with a barrel which is coaxial with a grease injection pipe of the grease injection head; the installation cylinder is arranged in the cylinder body through a plurality of elastic supporting mechanisms and can float in the radial direction of the cylinder body. And the grease injection rod is spherically hinged in the mounting cylinder through the rotating part. The hose is arranged between the grease injection rod and the grease injection pipe and enables the grease injection rod and the grease injection pipe to be communicated. The multiple elastic pieces are arranged in the circumferential direction of the hose at intervals, and all the elastic pieces are connected between the grease injection pipe and the grease injection rod and can drive the grease injection rod and the grease injection pipe to rotate synchronously. When the grease injection rod and the grease injection head are not coaxial, the grease injection rod can be subjected to proper angle adjustment under the action of the spherical hinge, the mounting cylinder floats under the action of the elastic supporting mechanism, meanwhile, the hose can be bent and deformed to adapt to the position change, and smooth grease injection can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of lubricating oil input devices, and in particular to a grease injection auxiliary tooling and grease injection device. Background Technology

[0002] Currently, for the crucial step of grease injection inside the ball cage of the front reducer assembly, there are two methods: manual grease injection and automatic grease injection. Manual grease injection offers some flexibility, with relatively lower requirements for workpiece positioning accuracy, production line layout, and equipment. It doesn't require complex tooling fixtures or high-precision positioning systems, but it increases the workload of operators. In contrast, automatic grease injection places stringent requirements on various aspects of the greased product. Specifically, to ensure the accuracy and stability of each grease injection, the consistent positioning of the product upon arrival at the grease injection station must be reliably guaranteed. However, in existing technologies, due to design imperfections, misalignment between the grease injection rod of the grease injection device and the drive rotary motor shaft often negatively impacts grease injection, sometimes even preventing it altogether. Utility Model Content

[0003] In view of this, the present invention aims to provide a grease injection auxiliary tooling that can smoothly inject grease even when the grease injection rod and the grease injection head are not coaxial.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A grease injection auxiliary tooling, comprising:

[0006] A base is provided on the grease injection head and has a cylindrical body coaxially arranged with the grease injection tube of the grease injection head;

[0007] The mounting cylinder is housed within the cylinder by several elastic support mechanisms and is capable of floating radially along the cylinder.

[0008] The grease injection rod is ball-jointed in the mounting cylinder via a rotating part;

[0009] A flexible tube is provided between the grease injection rod and the grease injection tube, and connects the two to each other;

[0010] The elastic plates are arranged at intervals along the circumference of the hose. Each elastic plate is connected between the grease injection tube and the grease injection rod and can drive the grease injection rod and the grease injection tube to rotate synchronously.

[0011] Furthermore, the elastic support mechanism includes a plurality of connecting rods spaced apart circumferentially along the mounting cylinder, and a first elastic portion disposed between the mounting cylinder and the cylinder body;

[0012] Each of the connecting rods extends radially along the mounting cylinder, and the cylinder body is provided with a clearance hole for the connecting rods to pass through. The first elastic part abuts between the mounting cylinder and the cylinder body.

[0013] Furthermore, the elastic sheet is an arc shape that convexes radially outward along the hose; and / or,

[0014] The hose is connected to the multiple elastic plates, the grease injection tube, and the grease injection rod via a clamp.

[0015] Furthermore, relative to the end connected to the hose, the other end of the grease injection rod is provided with a guide part, which is used to guide the ball cage to be greased to a preset posture.

[0016] Furthermore, the guiding part includes an inner ring guiding unit, which includes a guiding sleeve slidably sleeved on the grease injection rod and a second elastic part;

[0017] The grease injection rod is provided with a limiting member that blocks one side of the guide sleeve. The second elastic part abuts against the other side of the guide sleeve and between the rotating part. The end face of one end of the guide sleeve can push the inner ring of the ball cage to the preset posture.

[0018] Furthermore, the guiding part includes an outer ring guiding unit, the outer ring guiding unit includes a guide sleeve slidably sleeved on the guiding sleeve, and a third elastic part disposed between the guide sleeve and the guiding sleeve;

[0019] The guide sleeve extends outward relative to the guide sleeve, and the guide sleeve has a guide surface adapted to the outer ring of the ball cage. The guide surface is used to push the outer ring of the ball cage to the preset posture.

[0020] Furthermore, the guide sleeve has an outwardly expanding guide portion at one end away from the guide sleeve, the guide portion being used to guide the outer ring of the ball cage into the guide sleeve.

[0021] Furthermore, the cylinder body is provided with a pushing part, which abuts against the mounting cylinder radially along the cylinder body and keeps the mounting cylinder in a horizontal state.

[0022] Furthermore, the pushing part includes an indexing pin disposed above the mounting cylinder; and / or,

[0023] The rotating part includes a spherical bearing disposed in the mounting cylinder and a rotating shaft disposed in the spherical bearing, and the grease injection rod passes through the rotating shaft.

[0024] Compared with the prior art, this utility model has the following advantages:

[0025] The grease injection auxiliary fixture of this invention, by placing a flexible tube between the grease injection rods and an elastic plate connecting them, allows the grease injection rod to rotate with the grease injection tube. The grease injection rod is ball-jointed in a mounting cylinder via a rotating part, and the mounting cylinder is housed within the cylinder by several elastic support mechanisms and can float radially along the cylinder body. When the grease injection rod and the grease injection head are not coaxial, the grease injection rod can be adjusted at an appropriate angle under the action of the ball joint, and the mounting cylinder floats under the action of the elastic support mechanisms, thus ensuring a relatively smooth grease injection process. Simultaneously, the flexible tube can be bent and deformed to a certain extent to adapt to this positional change, ensuring that the grease in the grease injection tube can be smoothly transferred to the grease injection rod through the flexible tube, thereby ensuring the normal operation of the grease injection work.

[0026] In addition, the elastic support mechanism includes multiple connecting rods extending radially along the mounting cylinder, and a first elastic part disposed between the mounting cylinder and the cylinder body. The multiple connecting rods ensure the stability of the mounting cylinder during floating, preventing excessive tilting or rotation, allowing the mounting cylinder to float radially in a relatively stable state. The first elastic part effectively buffers the impact force on the mounting cylinder, protecting the internal structure of the tooling. The elastic plate is designed as an arc shape convex radially outward along the hose. Compared to other shapes, it is more prone to bending deformation under external force and can better recover its original shape after the force disappears due to its elasticity. Therefore, when there is a positional change between the grease injection tube and the grease injection rod, the arc-shaped elastic plate can better adapt to this change through its elastic deformation.

[0027] Secondly, the guide portion on the grease injection rod can automatically guide the ball cage to a preset posture, thereby eliminating the need for the pre-guiding process in existing technologies and reducing the investment of manpower, equipment, and space. The inner ring guiding unit includes a guide sleeve slidably fitted on the grease injection rod and a second elastic portion. Thus, the guide sleeve, through contact with the inner ring of the ball cage and its own sliding, pushes the inner ring of the ball cage against it, gradually adjusting it to the preset posture. The second elastic portion can effectively buffer the external force applied by the inner ring of the ball cage to the guide sleeve and the entire tooling during the guiding process, avoiding component damage caused by rigid collisions or excessive force.

[0028] Furthermore, the outer ring guiding unit includes a guide sleeve slidably fitted onto the guiding sleeve, and a third elastic part located between the guide sleeve and the guiding sleeve. This allows the guide sleeve, through the interaction between its guiding surface and the outer ring of the ball cage, to gradually push the outer ring of the ball cage, guiding it to a preset posture. The third elastic part effectively protects the guide sleeve and other related components, preventing damage from the impact force generated by the rigid contact between the outer ring of the ball cage and the guide sleeve. By providing the guiding part, the outer ring of the ball cage can smoothly enter the guide sleeve and then contact the guiding surface of the guide sleeve, allowing the guiding surface to subsequently push the outer ring of the ball cage to the preset posture.

[0029] Furthermore, by incorporating a counter-propulsion section, the radial force applied by the counter-propulsion section helps the mounting cylinder overcome external forces such as gravity, maintaining a horizontal position and ensuring the stability of the mounting cylinder's posture. The counter-propulsion section includes an indexing pin located above the mounting cylinder; this technology is mature, readily available, and possesses good elasticity, preventing damage to the mounting cylinder. The rotating section includes a spherical bearing within the mounting cylinder and a rotating shaft within the spherical bearing. The grease injection rod passes through the rotating shaft. The inherent structural characteristics of the spherical bearing allow it to evenly distribute force during rotation, reducing localized stress concentration. Simultaneously, the rational design and precise fit of the rotating shaft further enhance the smoothness of the entire rotation process, reducing the possibility of jamming, vibration, or other adverse phenomena affecting the grease injection effect, thus contributing to improved quality and efficiency of the grease injection work.

[0030] Another objective of this utility model is to provide a grease injection device, wherein the grease injection head of the grease injection device is provided with the grease injection auxiliary tooling as described above.

[0031] The grease injection device described in this utility model, by setting the grease injection auxiliary tooling as described above, can carry out grease injection work better, thus achieving better performance. Attached Figure Description

[0032] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0033] Figure 1 This is a schematic diagram of the grease injection device in the prior art described in the embodiments of this utility model;

[0034] Figure 2 This is a schematic diagram of the grease injection auxiliary tooling described in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the grease injection auxiliary tooling described in an embodiment of the present invention from another perspective;

[0036] Figure 4 This is a schematic diagram of the grease injection auxiliary tooling described in an embodiment of the present invention from another perspective;

[0037] Figure 5 This is a cross-sectional view of line AA in Figure 4;

[0038] Figure 6 for Figure 5 Enlarged view of section B;

[0039] Figure 7 for Figure 5 Enlarged view of section C;

[0040] Figure 8 This is a schematic diagram of the grease injection auxiliary tooling described in an embodiment of the present invention from another perspective;

[0041] Figure 9 for Figure 8 Sectional view of the DD line;

[0042] Figure 10 for Figure 8 Sectional view of the middle EE line;

[0043] Figure 11 This is a schematic diagram of the structure of the base described in an embodiment of the present utility model;

[0044] Figure 12 This is a schematic diagram of the structure of the mounting cylinder described in an embodiment of the present utility model;

[0045] Figure 13 The grease injection tube, hose, and grease injection rod described in the embodiments of this utility model;

[0046] Figure 14 This is a partial structural schematic diagram of the grease injection auxiliary tooling described in an embodiment of the present utility model.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Base; 2. Mounting cylinder; 3. Connecting rod; 4. Indexing pin; 5. Grease injection tube; 6. Grease injection head; 7. Second spring; 8. First retaining ring; 9. Third spring; 10. Guide sleeve; 11. Guide sleeve; 12. Grease injection rod; 13. Hoses; 14. Elastic sheet; 15. Spherical bearing; 16. Rotating shaft; 17. First spring; 18. Second retaining ring; 19. Third retaining ring; 20. Drive cylinder; 21. Rotary motor;

[0049] 101. Clearance hole; 102. Connection hole;

[0050] 201. Recessed platform; 202. Card slot;

[0051] 1001. Guiding Section;

[0052] 1101, Limit Block. Detailed Implementation

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0054] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" 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 utility model in light of the specific circumstances.

[0056] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] like Figure 1 As shown, the prior art grease injection device mainly includes a drive cylinder 20, a rotary motor 21 located at the drive end of the drive cylinder 20, and a grease injection head 6 located at the drive end of the rotary motor 21. The grease injection head 6 has a grease injection tube 5 for injecting grease into the product to be greased. Furthermore, the grease injection device is particularly suitable for injecting grease into ball cages, where the prior art ball cage mainly consists of an inner ring, an outer ring, steel balls, and a cage.

[0058] This embodiment relates to a grease injection auxiliary fixture, which is mounted on the grease injection head 6 of a grease injection device. In its overall structure, the grease injection auxiliary fixture includes a base 1, a mounting cylinder 2, a grease injection rod 12, a hose 13, and elastic plates 14. The base 1 is mounted on the grease injection head 6 and has a cylinder coaxially arranged with the grease injection tube 5 of the grease injection head 6. The mounting cylinder 2 is mounted inside the cylinder by several elastic support mechanisms and can float radially along the cylinder. The grease injection rod 12 is ball-jointed in the mounting cylinder 2 via a rotating part. The hose 13 is located between the grease injection rod 12 and the grease injection tube 5, connecting the two. Multiple elastic plates 14 are arranged circumferentially along the hose 13, each elastic plate 14 connecting the grease injection tube 5 and the grease injection rod 12, and capable of driving the grease injection rod 12 and the grease injection tube 5 to rotate synchronously.

[0059] In this embodiment, the grease injection auxiliary fixture uses a flexible hose 13 positioned between two grease injection rods 12, and an elastic sheet 14 connecting the grease injection tube 5 and the grease injection rod 12. This allows the grease injection rod 12 to rotate with the grease injection tube 5. The grease injection rod 12 is ball-jointed to the mounting cylinder 2 via a rotating part, and the mounting cylinder 2 is housed within the cylinder body via several elastic support mechanisms, allowing it to float radially along the cylinder body. When the grease injection rod 12 and the grease injection head 6 are not coaxial, the grease injection rod 12 can be adjusted at an appropriate angle under the action of the ball joint, and the mounting cylinder 2 can float under the action of the elastic support mechanisms, thus ensuring a relatively smooth grease injection process. Simultaneously, the flexible hose 13 can bend and deform to a certain extent to adapt to this positional change, ensuring that the grease in the grease injection tube 5 can still be smoothly transferred to the grease injection rod 12 through the flexible hose 13, thereby ensuring the normal operation of the grease injection work.

[0060] Based on the above overview, an exemplary structure of the grease injection auxiliary tooling in this embodiment is described below. Figures 2 to 10 As shown, it is elongated in shape. Furthermore, combined with... Figure 2 , Figure 3 and Figure 11 As shown in the diagram, in a preferred embodiment, the base 1 is cylindrical in shape, and the aforementioned cylindrical body is specifically formed by the structure at one end of the base 1. Furthermore, to facilitate connection between the base 1 and the grease injection head 6 in the prior art, as shown... Figure 11 As shown, one end of the base 1 is provided with a mounting hole for mounting the grease injection head 6, and a connecting hole 102 for connecting with the grease injection head 6. In addition, to facilitate the overall lightweight design, the base 1 is provided with a hollow hole that runs through it radially in the middle.

[0061] As a preferred implementation method, such as Figure 12As shown, the mounting cylinder 2 in this embodiment is a cylindrical shape coaxially arranged with the base 1. Furthermore, as a preferred embodiment, the elastic support mechanism of this embodiment includes a plurality of connecting rods 3 spaced circumferentially along the mounting cylinder 2, and a first elastic portion disposed between the mounting cylinder 2 and the cylinder body. Each connecting rod 3 extends radially along the mounting cylinder 2, and the cylinder body has clearance holes 101 for the connecting rods 3 to pass through. The first elastic portion abuts against the mounting cylinder 2 and the cylinder body.

[0062] This design serves two purposes. First, the multiple connecting rods 3 ensure the stability of the mounting cylinder 2 during floating, preventing excessive tilting or rotation and allowing it to float radially in a relatively stable state. Second, the first elastic part effectively buffers the impact force on the mounting cylinder 2, protecting the internal structure of the tooling. Simultaneously, the first elastic part ensures that the mounting cylinder 2 accurately returns to its original position after the force dissipates, guaranteeing continuous and stable operation of the tooling.

[0063] Specifically, in combination Figure 3 , Figure 11 and Figure 12 As shown, in this embodiment, the elastic support mechanism consists of two parts spaced apart along the axial direction of the mounting cylinder 2, respectively located at both ends of the axial direction of the mounting cylinder 2. Furthermore, in conjunction with... Figure 9 and Figure 10 As shown, each elastic support mechanism includes four connecting rods 3 evenly distributed along the circumference of the mounting cylinder 2. Furthermore, one end of each connecting rod 3 is screwed onto the mounting cylinder 2, and the other end passes through the clearance hole 101 on the cylinder body. Here, as a preferred embodiment, as... Figure 11 As shown, the clearance hole 101 is an arc-shaped hole extending circumferentially along the cylinder. The first elastic part is specifically a first spring 17 fitted on each connecting rod 3.

[0064] It should be noted that the number of elastic support mechanisms and their connecting rods 3 is not limited to... Figure 3 As shown in the diagram. In addition to screwing the connecting rod 3 onto the mounting cylinder 2, it can also be interference-fitted or otherwise attached to the mounting cylinder 2. Furthermore, the first spring 17 can be either sleeved on the connecting rod 3 or not sleeved on it, and can directly abut against the mounting cylinder 2 and the cylinder body.

[0065] like Figure 13As shown in the diagram, in a preferred embodiment, the elastic sheet 14 is an arc shape that bulges outward along the radial direction of the hose 13. By making the elastic sheet 14 arc-shaped, it is easier to bend and deform under external force compared to other shapes, and it can recover its original shape well after the force is removed due to its own elasticity. Therefore, when there is a relative rotational tendency or slight positional change between the grease injection tube 5 and the grease injection rod 12, the arc-shaped elastic sheet 14 can adapt to this change through its own elastic deformation, and at the same time, it can quickly return to its initial state after the change ends, ensuring its driving effect on the synchronous rotation of the grease injection rod 12 and the grease injection tube 5 and the stability of the overall connection.

[0066] In one preferred embodiment, three elastic sheets 14 are spaced apart circumferentially along the hose 13, and can be made of iron sheets. Of course, the number of elastic sheets 14 can be four, five, or other quantities besides the three shown in the figure. Additionally, as another implementation method, such as... Figure 13 As shown, both ends of the hose 13 are connected to multiple elastic plates 14, grease tubes 5, and grease rods 12 via clamps. This allows the hose 13, elastic plates 14, and the grease tubes 5 and grease rods 12 at both ends to be connected together, and torque is transmitted through the elastic plates 14. This allows the grease tubes 5 to better drive the grease rods 12 to rotate, while also allowing the grease rods 12 to change position in all directions, including up / down, left / right, and tilt angles.

[0067] It is understandable that, in addition to using clamps to connect multiple elastic plates 14 and grease tubes 5 or grease rods 12 together, other methods of connection can also be used.

[0068] like Figure 6 As shown in the diagram, in a preferred embodiment, the rotating part includes a spherical bearing 15 disposed in the mounting cylinder 2 and a rotating shaft 16 disposed in the spherical bearing 15, with the grease injection rod 12 passing through the rotating shaft 16. The structural characteristics of the spherical bearing 15 itself enable it to evenly distribute the force during rotation, reducing local stress concentration. At the same time, the reasonable design and precise fit of the rotating shaft 16 further improve the stability of the entire rotation process, reducing the possibility of adverse phenomena such as jamming and shaking that affect the grease injection effect, thus helping to improve the quality and efficiency of the grease injection work.

[0069] Therefore, when the angle of the grease injection rod 12 needs to be adjusted, since the grease injection rod 12 passes through the rotating shaft 16, and the rotating shaft 16 is located inside the spherical bearing 15, the grease injection rod 12 can drive the rotating shaft 16 to rotate within the spherical bearing 15. The multi-angle rotation characteristic of the spherical bearing 15 allows the rotating shaft 16 to swing at certain angles in multiple directions, thereby enabling the grease injection rod 12 to also achieve corresponding angle changes. This ensures that the grease injection end can be accurately aligned with the area requiring grease injection, guaranteeing the smooth progress of the grease injection work.

[0070] Furthermore, as a specific embodiment, such as Figure 6 As shown, the mounting cylinder 2 has a recess 201 positioned on the right side of the spherical bearing 15, and a retaining groove 202 located on its left side. The retaining spring within the retaining groove 202, combined with the recess 201 on the right side, restricts the axial displacement of the spherical bearing 15 relative to the mounting cylinder 2. The rotating shaft 16 can be connected to the grease injection rod 12 via other conventional structures such as the first retaining ring 8.

[0071] As a further embodiment, relative to the end connected to the hose 13, the other end of the grease injection rod 12 is provided with a guide portion, which is used to guide the ball cage to be greased to a preset posture. By using the guide portion on the grease injection rod 12, the ball cage can be automatically guided to the preset posture, thereby eliminating the need for the pre-guiding process in the prior art, thus reducing the investment of manual equipment and space. In this embodiment, the guide portion includes an inner ring guide unit, which includes a guide sleeve 11 slidably fitted on the grease injection rod 12 and a second elastic portion.

[0072] Furthermore, the grease injection rod 12 is equipped with a limiting member that blocks one side of the guide sleeve 11, and the second elastic part abuts against the other side of the guide sleeve 11 between the guide sleeve 11 and the rotating part. The end face of one end of the guide sleeve 11 can push the inner ring of the ball cage to a preset posture. With this configuration, when the tooling approaches the ball cage to prepare for grease injection, the end face of one end of the guide sleeve 11 will first contact the inner ring of the ball cage. As the tooling moves further or the ball cage moves relative to itself, the inner ring of the ball cage will apply an external force to the guide sleeve 11, causing the guide sleeve 11 to slide along the grease injection rod 12 towards the rotating part, while simultaneously compressing the second elastic part, which is then compressed and stores elastic potential energy. During this process, the guide sleeve 11, through its contact with the inner ring of the ball cage and its own sliding, will push the inner ring of the ball cage, gradually adjusting it to the preset posture. Once the external force disappears, for example, when the inner ring of the ball cage has been adjusted into place, the second elastic part releases its elastic potential energy, pushing the guide sleeve 11 back to its initial relative position, ready for the next guiding operation.

[0073] Specifically, refer to Figure 7 and Figure 14As shown, the guide sleeve 11 in this embodiment is a cylindrical shape coaxially arranged with the grease injection rod 12. Furthermore, a limiting block 1101 is provided in the guide sleeve 11, and the grease injection rod 12 passes through the limiting block 1101. Specifically, the limiting element is a second retaining ring 18 provided on the grease injection rod 12, and the second retaining ring 18 abuts against the right side of the limiting block 1101. Of course, in addition to using a second retaining ring 18, it is also feasible to use a limiting protrusion that is welded to the grease injection rod 12 or integrally formed with the grease injection rod 12.

[0074] Continue to refer to Figure 11 As shown in the figure, the second elastic part in this embodiment is specifically a second spring 7 disposed between the joint bearing 15 and the limiting block 1101, and the second spring 7 is sleeved on the grease injection rod 12. Furthermore, the spring structure is relatively conventional; therefore, only the arrangement of the second spring 7 is shown in the figure, and its specific structure is not illustrated. In addition, the end of the grease injection rod 12 has the same structure as the end of the grease injection rod 12 in the prior art, and both are arc-shaped. Therefore, in specific implementation, only the part of the structure at the end of the grease injection tube 5 connected to the motor in the existing grease injection device can be retained, and the hose 13 can be directly connected to the retained grease injection tube 5 structure.

[0075] As a further embodiment, the guiding part of this embodiment includes an outer ring guiding unit, which includes a guide sleeve 10 slidably sleeved on the guiding sleeve 11, and a third elastic part disposed between the guide sleeve 10 and the guiding sleeve 11. Furthermore, the guide sleeve 10 extends outward relative to the guiding sleeve 11, and the guide sleeve 10 has a guide surface adapted to the outer ring of the ball cage. The guide surface is used to push the outer ring of the ball cage to a preset posture, that is, to push the inner ring of the ball cage to a state coaxial with the grease injection rod 12.

[0076] Therefore, as the grease injection auxiliary fixture approaches the ball cage, the guide surface of the guide sleeve 10 first contacts the outer ring of the ball cage. As the relative position between the fixture and the ball cage changes further, the outer ring of the ball cage applies an external force to the guide surface, causing the guide sleeve 10 to slide along the guide sleeve 11, while simultaneously compressing the third elastic part, which then begins to store elastic potential energy. During this process, the guide sleeve 10, through the interaction between its guide surface and the outer ring of the ball cage, gradually pushes against the outer ring, guiding it to adjust to a preset posture. Once the outer ring of the ball cage is in place, the external force disappears, the third elastic part releases its elastic potential energy, causing the guide sleeve 10 to return to its original relative position, restoring the entire outer ring guiding unit to its initial state, ready for the next guiding operation on the outer ring of the ball cage.

[0077] As a preferred embodiment, combined with Figure 2 , Figure 7 and Figure 14As shown, in this embodiment, the guide sleeve 10 is a cylindrical shape coaxially arranged with the guide sleeve 11. To facilitate lightweight design, the guide sleeve 10 has multiple hollowed-out notches, and comprises three parts evenly distributed circumferentially. The guide sleeve 11 has a radially outwardly protruding portion at one end away from the mounting cylinder 2. The guide sleeve 10 is fitted onto the guide sleeve 11 and abuts against the protruding portion. Furthermore, a radially outwardly protruding limiting ring is provided at the other end of the guide sleeve 11. The third elastic part is specifically a third spring 9 fitted onto the guide sleeve 11, with both ends of the third spring 9 abutting against the limiting ring and the guide sleeve 10, respectively. In a specific embodiment, the limiting ring is specifically composed of a third retaining ring 19 provided on the guide sleeve 11; however, the limiting ring and the guide sleeve 11 can also be integrally formed.

[0078] As a further implementation method, such as Figure 14 As shown, the guide sleeve 10 has an outwardly flared guide portion 1001 at the end away from the guide sleeve 11. The guide portion 1001 is used to guide the outer ring of the ball cage into the guide sleeve 10. The guide portion 1001 includes three guide pieces that correspond one-to-one with each component. By setting the guide portion 1001, the outer ring of the ball cage can enter the guide sleeve 10 relatively smoothly and then contact the guide surface of the guide sleeve 10. This allows the guide surface to push the outer ring of the ball cage to a preset posture, that is, to push the outer ring of the ball cage to a state coaxial with the grease injection rod 12.

[0079] To achieve better performance, a pushing part is provided on the cylinder body. This pushing part abuts against the mounting cylinder 2 radially along the cylinder body, keeping the mounting cylinder 2 in a horizontal position. This design provides downward pressure to the mounting cylinder 2 to counteract the weight of the grease injection rod 12 and the guide part, thus ensuring that the grease injection remains horizontal under normal no-load conditions. Furthermore, as a specific embodiment, the pushing part includes an indexing pin 4 located above the mounting cylinder 2. This pin can utilize existing structures and typically consists of a shaft, a spring, and a pin. Therefore, not only is the mounting cylinder 2 kept horizontal in its initial state, but it also allows for radial floating without damaging the mounting cylinder 2.

[0080] Moreover, combined Figure 9 and Figure 10 As shown in the figure, in a preferred embodiment, three indexing pins 4 are evenly distributed along the circumference of the mounting cylinder 2 to provide a uniform downward pressure on the mounting cylinder 2 from above. It should be noted that the pushing part can use other structures besides indexing pins 4, and the number of indexing pins 4 is not limited to the three shown in the figure; other numbers can also be used.

[0081] The grease injection auxiliary fixture in this embodiment, by adopting the above structure, allows the grease injection rod 12 to be adjusted at an appropriate angle under the action of the spherical bearing 15 when the grease injection rod 12 and the grease injection head 6 are not coaxial. This also allows the mounting cylinder 2 to float under the action of the elastic support mechanism, ensuring a smooth grease injection process. Simultaneously, the hose 13 can be bent and deformed to a certain extent to adapt to this positional change, ensuring that the grease in the grease injection tube 5 can be smoothly transferred to the grease injection rod 12 through the hose 13, thus guaranteeing the normal operation of the grease injection work.

[0082] In addition, this embodiment also relates to a grease injection device, wherein the grease injection head 6 of the grease injection device is provided with the above-mentioned grease injection auxiliary tooling.

[0083] The grease injection device of this embodiment, by setting the grease injection auxiliary tooling as described above, can carry out grease injection work better, thereby achieving better performance.

[0084] Based on the above overall description, when using the grease injection device in this embodiment, taking the ball cage as an example, the overall grease injection auxiliary fixture begins to move towards the ball cage. The guide sleeve 10 first contacts the outer ring of the ball cage. At this time, the hose 13 begins to bend and deform slightly according to the offset position of the outer ring of the ball cage. Simultaneously, the first spring 17 begins to generate different amounts of compression, causing the mounting cylinder 2 to shift vertically and horizontally. Depending on the shaft alignment, the spherical bearing 15 will also rotate accordingly, achieving adjustment of the angular deviation.

[0085] Then, the grease injection auxiliary tool continues to move towards the ball cage. At this point, the guide sleeve 10 is completely close to the outer ring of the ball cage and cannot move forward, thus compressing the third spring 9. Subsequently, the grease injection auxiliary tool continues to move towards the ball cage. At this point, the guide sleeve 11 enters the inside of the ball cage, begins to contact its inner ring and pushes it into position. In this state, the guide sleeve 11 cannot move forward and begins to compress the second spring 7.

[0086] Finally, the grease injection auxiliary fixture continues to move towards the ball cage. At this time, the grease injection rod 12 enters and passes through the inner ring, reaching the grease injection position and starting grease injection. The drive motor rotates, and the grease injection tube 5 transmits torque to the grease injection rod 12 through the connection position of the hose 13 and the elastic plate 14, causing the grease injection rod 12 to start rotating. The spherical bearing 15, the connecting rod 3, and the first spring 17 provide adjustment for the vertical, horizontal, and angular deviations when the grease injection tube 5 is not aligned with the inner ring of the ball cage.

[0087] Therefore, the grease injection device of this embodiment, by adopting the above-mentioned grease injection auxiliary tooling, can solve the problem of grease injection failure due to misalignment between the grease injection rod 12 and the product to be greased at the automatic grease injection station at a low cost, without the need for additional equipment and without affecting the space and program debugging of existing grease injection devices. Moreover, it can also eliminate the pre-guiding process in the prior art, reduce the investment of manpower, equipment and space, and solve the problem of poor product positioning accuracy causing collision damage between the grease injection rod 12 and the product.

[0088] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grease injection auxiliary tool, characterized in that, include: The base (1) is provided on the grease injection head (6) and has a cylindrical body that is coaxially arranged with the grease injection tube (5) of the grease injection head (6); The mounting cylinder (2) is provided in the cylinder body by a number of elastic support mechanisms and can float radially along the cylinder body; The grease injection rod (12) is ball-jointed in the mounting cylinder (2) via a rotating part; A flexible tube (13) is provided between the grease injection rod (12) and the grease injection tube (5) and connects the two to each other; The elastic sheet (14) is a plurality of the elastic sheets (14) arranged at intervals along the circumference of the hose (13). Each elastic sheet (14) is connected between the grease injection tube (5) and the grease injection rod (12) and can drive the grease injection rod (12) and the grease injection tube (5) to rotate synchronously.

2. The grease injection auxiliary tooling according to claim 1, characterized in that: The elastic support mechanism includes a plurality of connecting rods (3) spaced circumferentially along the mounting cylinder (2), and a first elastic part disposed between the mounting cylinder (2) and the cylinder body; Each of the connecting rods (3) extends radially along the mounting cylinder (2), and the cylinder body is provided with a clearance hole (101) for the connecting rods (3) to pass through. The first elastic part abuts between the mounting cylinder (2) and the cylinder body.

3. The grease injection auxiliary tooling according to claim 1, characterized in that: The elastic sheet (14) is an arc shape that convexes radially outward along the hose (13); and / or, The hose (13) is connected to the plurality of elastic plates (14), the grease tube (5), and the grease rod (12) by means of a clamp.

4. The grease injection auxiliary tooling according to claim 1, characterized in that: Compared to the end connected to the hose (13), the other end of the grease injection rod (12) is provided with a guide part, which is used to guide the ball cage to be greased to a preset posture.

5. The grease injection auxiliary tooling according to claim 4, characterized in that: The guiding part includes an inner ring guiding unit, which includes a guiding sleeve (11) slidably sleeved on the grease injection rod (12) and a second elastic part; The grease injection rod (12) is provided with a limiting member that blocks one side of the guide sleeve (11). The second elastic part abuts against the other side of the guide sleeve (11) and between the rotating part. The end face of one end of the guide sleeve (11) can push the inner ring of the ball cage to the preset posture.

6. The grease injection auxiliary tooling according to claim 5, characterized in that: The guiding part includes an outer ring guiding unit, which includes a guide sleeve (10) slidably sleeved on the guiding sleeve (11) and a third elastic part disposed between the guide sleeve (10) and the guiding sleeve (11). The guide sleeve (10) extends outward relative to the guide sleeve (11), and the guide sleeve (10) has a guide surface adapted to the outer ring of the ball cage. The guide surface is used to push the outer ring of the ball cage to the preset posture.

7. The grease injection auxiliary tooling according to claim 6, characterized in that: The guide sleeve (10) has an outwardly extended guide portion (1001) at one end away from the guide sleeve (11), and the guide portion (1001) is used to guide the outer ring of the ball cage into the guide sleeve (10).

8. The grease injection auxiliary tooling according to any one of claims 1 to 7, characterized in that: The cylinder is provided with a pushing part, which abuts against the mounting cylinder (2) radially along the cylinder and keeps the mounting cylinder (2) in a horizontal state.

9. The grease injection auxiliary tooling according to claim 8, characterized in that: The pushing part includes an indexing pin (4) disposed above the mounting cylinder (2); and / or, The rotating part includes a spherical bearing (15) disposed in the mounting cylinder (2) and a rotating shaft (16) disposed in the spherical bearing (15), and the grease injection rod (12) passes through the rotating shaft (16).

10. A grease injection device, characterized in that: The grease injection head of the grease injection device is provided with any one of claims 1 to 9.

Images