Clamp for curing self-lubricating fabric liner
By utilizing the design of the rubber rod and pressure block in the fixture, and taking advantage of the elastic properties and split structure of rubber, uniform bonding between the self-lubricating fabric liner and the outer ring of the bearing is achieved. This solves the problem of uneven pressure in the prior art, improves the bonding quality, and simplifies manufacturing and maintenance.
Patent Information
- Application Number
- CN202520219967.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Existing technologies for bonding self-lubricating gaskets to the outer ring of spherical plain bearings suffer from uneven bonding pressure, complex operation, and poor results.
A clamp was designed that utilizes the elastic properties of a rubber rod. By heating and softening the rubber rod and applying pressure using a pressure block and abutment, the rubber rod expands radially, uniformly adhering the self-lubricating fabric liner to the outer ring of the bearing. The combination of a split structure and threaded pressure bolts achieves stability in pressure and heating.
This technology achieves a strong bond between the self-lubricating fabric gasket and the bearing outer ring, avoiding problems such as weak bonding or localized detachment caused by uneven pressure, improving bonding quality, and simplifying the manufacturing and maintenance process.
Smart Images
Figure CN223656866U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of clamps for curing self-lubricating fabric liner. BACKGROUND
[0002] Self-lubricating joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, good lubrication, etc. These characteristics enable the joint bearing to support the weight of the equipment, provide positioning function, resist vibration and reduce noise, reduce equipment wear and prolong the service life of the equipment. It is widely used in many fields such as automobile manufacturing, aerospace, etc. The adhesive performance of the self-lubricating liner and the joint bearing directly determines the service life of the joint bearing.
[0003] Currently, the main method of bonding the self-lubricating liner to the inner surface of the outer ring includes using a rigid mold with an outer spherical surface, adjusting the spherical diameter to fit the bearing outer ring, and then applying pressure to the mold to transfer the pressure to the liner on the bearing outer ring, thereby completing the bonding. This method requires high precision and centering of the mold, and defects in the spherical surface will cause uneven bonding pressure distribution, greatly affecting the bonding effect. Alternatively, a slotted expansion sleeve structure is used, which core is to apply axial extrusion to a wave spring, the radial deformation of the wave spring compresses the slotted expansion sleeve, and the expansion sleeve expands to push the fabric liner to the inner spherical surface of the joint bearing outer ring, thereby achieving bonding. The surface of the expansion sleeve is uniformly distributed with four expansion joints along the axial direction, and the material of the expansion sleeve is mainly rigid material. The four expansion joints after expansion will inevitably cause part of the fabric liner not to receive bonding force, affecting the bonding effect of the fabric. Alternatively, gas or liquid is filled into the hollow mold, and the mold is pressurized by deformation method to transfer the pressure to the fabric liner to complete the bonding, but this method is more complex to operate. SUMMARY
[0004] In view of the deficiencies of the prior art, the utility model provides a clamp for curing self-lubricating fabric liner, which has a simple structure and can more efficiently and stably attach the self-lubricating fabric liner to the inner wall of the bearing outer ring, ensuring stable bonding pressure at each position and good use effect.
[0005] To achieve the above-mentioned purpose, the utility model provides a clamp for curing self-lubricating fabric liner, which comprises a shell, a cavity is formed in the shell to form a cylindrical processing cavity, a sleeve is arranged in the processing cavity, the sleeve is in clearance fit with the inner wall of the processing cavity, an assembly space for accommodating the outer ring to be processed is formed between the sleeve and the bottom surface of the processing cavity, a pressurizing block is fitted in the sleeve, the diameter of the pressurizing block is the same as the inner diameter of the sleeve, a rubber rod with a diameter smaller than the inner diameter of the bearing outer ring to be processed is also in contact between the pressurizing block and the bottom surface of the processing cavity, and a contact piece for pressing the pressurizing block against the rubber rod is fitted on the shell.
[0006] The beneficial effect of such an arrangement is that: in this way, the inside of the shell is provided with a cylindrical machining cavity, the sleeve in the machining cavity is in clearance fit with the inner wall of the machining cavity, and a special assembly space for accommodating the outer ring to be machined is reserved between the sleeve and the bottom surface of the machining cavity. The pressing block adapted in the sleeve has a diameter consistent with the inner diameter of the sleeve, and a rubber rod with a diameter smaller than the inner diameter of the bearing outer ring to be machined is placed between the pressing block and the bottom surface of the machining cavity. A self-lubricating fabric gasket is placed between the rubber rod and the bearing outer ring. First, the rubber rod is heated and softened, and then the pressing block is pressed by the abutting member on the shell. This positive pressure is transmitted to the rubber rod. Due to the good elasticity of rubber, its height is compressed under the action of pressure, thereby generating radial expansion. The radial expansion of the rubber rod uniformly applies pressure to the self-lubricating fabric gasket placed on the inner surface of the bearing outer ring. This uniform pressure distribution enables the self-lubricating fabric gasket to firmly adhere to the inner surface of the bearing outer ring, thereby achieving bonding between the two. This design not only cleverly utilizes the elastic properties of rubber, but also ensures the stability and uniformity of pressure transmission through reasonable structural layout. Compared with traditional bonding methods, it effectively avoids problems such as insecure bonding or partial detachment caused by uneven pressure, greatly improving the bonding quality of the self-lubricating fabric gasket and the bearing outer ring.
[0007] As a further setting of the utility model, the shell is split to form a first shell and a second shell, the first shell and the second shell are fastened and connected through fastening bolts, a first split cavity in the shape of a semicylinder is formed on the first shell, a second split cavity in the shape of a semicylinder is formed on the second shell, the first split cavity and the second split cavity combine to form a machining cavity, a first machining opening in the shape of a semicylinder is further arranged on the upper end face of the first shell, a second machining opening in the shape of a semicylinder is further arranged on the upper end face of the second shell, and the first machining opening and the second machining opening combine to form an operating hole for the abutting member to abut on the pressing block.
[0008] The beneficial effect of such an arrangement is that: in this way, the inside of the shell is provided with a cylindrical machining cavity, the sleeve in the machining cavity is in clearance fit with the inner wall of the machining cavity, and a special assembly space for accommodating the outer ring to be machined is reserved between the sleeve and the bottom surface of the machining cavity. The pressing block adapted in the sleeve has a diameter consistent with the inner diameter of the sleeve, and a rubber rod with a diameter smaller than the inner diameter of the bearing outer ring to be machined is placed between the pressing block and the bottom surface of the machining cavity. A self-lubricating fabric gasket is placed between the rubber rod and the bearing outer ring. First, the rubber rod is heated and softened, and then the pressing block is pressed by the abutting member on the shell. This positive pressure is transmitted to the rubber rod. Due to the good elasticity of rubber, its height is compressed under the action of pressure, thereby generating radial expansion. The radial expansion of the rubber rod uniformly applies pressure to the self-lubricating fabric gasket placed on the inner surface of the bearing outer ring. This uniform pressure distribution enables the self-lubricating fabric gasket to firmly adhere to the inner surface of the bearing outer ring, thereby achieving bonding between the two. This design not only cleverly utilizes the elastic properties of rubber, but also ensures the stability and uniformity of pressure transmission through reasonable structural layout. Compared with traditional bonding methods, it effectively avoids problems such as insecure bonding or partial detachment caused by uneven pressure, greatly improving the bonding quality of the self-lubricating fabric gasket and the bearing outer ring.
[0009] As a further setting of the utility model, the abutting member is arranged as a pressing bolt, and the pressing bolt is in threaded fit with the operating hole.
[0010] The beneficial effect of such an arrangement is that the threaded connection allows the user to accurately adjust the pressure applied to the pressing block according to the requirements. When the pressing bolt is screwed into the operation hole, the tight thread structure provides stable and continuous pressure, avoiding problems such as uneven heating or abnormal deformation of the rubber rod caused by unstable pressure. This stability ensures that the pressure remains at an appropriate level during the heating process of the rubber rod, helping to maintain the heating state of the rubber rod and further ensuring uniform heating and synchronous deformation.
[0011] As a further arrangement of the present application, the first shell and the second shell bottom are respectively provided with a combined groove, and the combined grooves of the first shell and the second shell bottom combine to form a heating groove.
[0012] The beneficial effect of such an arrangement is that the combined grooves of the first shell and the second shell bottom form a heating groove after splicing. Compared with the traditional single-shell heating method, this combined structure can more reasonably utilize space, concentrating heat in the heating groove and reducing heat loss. When heating objects such as rubber rods, the heating groove can wrap the heating area in all directions, ensuring uniform heat transfer to the object and ensuring uniform heating.
[0013] As a further arrangement of the present application, the end surface of the pressing block facing away from the rubber rod is provided with a heating coil, a control chip is arranged in the pressing bolt, the control chip is electrically connected with the heating coil, and the end of the pressing bolt exposed outside the shell is provided with a touch button for controlling the on-off of the heating coil.
[0014] The beneficial effect of such an arrangement is that when the heating coil is powered on, the circuit layout of the heating coil, control chip and touch button is a prior art and will not be described in detail here. Heat is quickly transferred to the pressing block and then to the top surface of the rubber rod. Traditional heating methods often result in inconsistent deformation of different parts of the rubber rod due to uneven local heating. This structure allows the rubber rod to be heated from the top position, avoiding uneven heating of the entire structure due to simple bottom heating. This uniform heating ensures that the entire rubber rod deforms synchronously, greatly improving the forming quality of the product. With the electrical connection of the control chip and the heating coil, and the control of the on-off of the heating coil by the touch button on the pressing bolt, the operator can accurately adjust the heating time and temperature according to the actual requirements, achieving fine control of the heating and deformation process of the rubber rod. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 The structure of the embodiment of the present application is shown in the figure;
[0016] Fig. 2It is an internal structure schematic view of the embodiment of the utility model;
[0017] Fig. 3 It is an explosion structure schematic view of the embodiment of the utility model. Specific implementation
[0018] The utility model provides a kind of fixture for solidifying self-lubricating fabric gasket, as shown in Figs. 1 to 3 As shown, including shell 1, the cavity can be formed in shell 1 and is formed into cylindrical processing cavity, sleeve 2 is arranged in the processing cavity, sleeve 2 outer peripheral wall and processing cavity inner wall gap cooperation, the assembly space for accommodating the outer ring to be processed is formed between sleeve 2 and processing cavity bottom surface, pressurizing block 3 is matched in sleeve 2, the diameter of pressurizing block 3 is same with the inner diameter of sleeve 2, and rubber stick 5 with diameter less than the inner diameter of bearing outer ring to be processed is also in contact between pressurizing block 3 and processing cavity bottom surface, and the contact piece for being in contact with pressurizing block 3 to rubber stick 5 is matched on shell 1.The beneficial effect of such setting is: as such setting, cylindrical processing cavity is provided in the inside of shell 1, sleeve 2 in processing cavity and processing cavity inner wall gap cooperation, and the assembly space for accommodating the outer ring to be processed is reserved between sleeve 2 and processing cavity bottom surface.Pressurizing block 3 is adapted in sleeve 2, and the diameter is consistent with the inner diameter of sleeve 2, and rubber stick 5 with diameter less than the inner diameter of bearing outer ring to be processed is also placed between pressurizing block 3 and processing cavity bottom surface.First, rubber stick 5 is heated and softened, and then the contact piece on shell 1 is used to apply pressure to pressurizing block 3, and the positive pressure will be transmitted to rubber stick 5, since rubber has good elasticity, under the action of pressure, its height is compressed, and then radial expansion is generated, and the radial expansion of rubber stick 5 uniformly applies pressure on self-lubricating fabric gasket placed on the inner surface of bearing outer ring, and the uniform pressure distribution enables self-lubricating fabric gasket to firmly adhere to the inner surface of bearing outer ring, so as to realize the bonding between the two.The design not only ingeniously utilizes the elastic properties of rubber, but also ensures the stability and uniformity of pressure transmission through reasonable structural layout.Compared with traditional bonding method, it effectively avoids the problems of insecure bonding or local peeling caused by uneven pressure, and greatly improves the bonding quality of self-lubricating fabric gasket and bearing outer ring.
[0019] As a further arrangement of the present embodiment, the shell 1 is split into a first shell 11 and a second shell 12, which are fastened together by fastening bolts. The first shell 11 is provided with a first split cavity in the shape of a semi-cylinder, and the second shell 12 is provided with a second split cavity in the shape of a semi-cylinder. The first split cavity and the second split cavity combine to form a processing cavity. The first shell 11 is further provided with a first processing opening in the shape of a semi-cylinder on the upper end surface, and the second shell 12 is further provided with a second processing opening in the shape of a semi-cylinder on the upper end surface. The first processing opening and the second processing opening combine to form an operating hole for the abutting member to abut on the pressing block 3. The beneficial effects of this arrangement are as follows: in this arrangement, each component can be independently produced during the manufacturing process, and the first split cavity of the first shell 11 and the second split cavity of the second shell 12 can be processed simultaneously, thereby shortening the manufacturing cycle. During assembly, the semi-cylindrical first and second split cavities and the first and second processing openings are easy to align and splice, thereby reducing the assembly difficulty and facilitating the installation and positioning of the abutting member. If a part is damaged, only the corresponding split shell needs to be replaced, thereby reducing the maintenance cost and time. The flexibility of this split arrangement makes the entire structure efficient in terms of assembly and maintenance.
[0020] As a further arrangement of the present embodiment, the abutting member is provided as a pressing bolt 4, which is threadedly engaged with the operating hole. The beneficial effects of this arrangement are as follows: in this arrangement, the threaded engagement allows the user to accurately adjust the pressure applied to the pressing block 3 according to the needs. When the pressing bolt 4 is screwed into the operating hole, the tight thread structure provides stable and continuous pressure, thereby avoiding problems such as uneven heating or abnormal deformation of the rubber rod 5 caused by unstable pressure. This stability ensures that the pressure remains at an appropriate level during the heating process of the rubber rod 5, which helps to maintain the heating state of the rubber rod 5 and further ensures uniform heating and synchronous deformation.
[0021] As a further arrangement of the present embodiment, the bottom of the first shell 11 and the bottom of the second shell 12 are respectively provided with a combined groove, and the combined grooves of the bottom of the first shell 11 and the bottom of the second shell 12 combine to form a heating groove. The beneficial effects of this arrangement are as follows: in this arrangement, the combined grooves of the bottom of the first shell 11 and the bottom of the second shell 12 form a heating groove after splicing. Compared with the traditional single-shell heating method, this combined structure can more reasonably utilize space and concentrate heat in the heating groove, thereby reducing heat loss. When heating objects such as the rubber rod 5, the heating groove can fully wrap the heating area, allowing heat to be uniformly transmitted to the objects, thereby ensuring uniform heating. In addition, the combined grooves enhance the sealing of the heating device, avoid external cold air interference with the heating process, and significantly improve the overall heating efficiency and effect.
[0022] As a further arrangement of the present embodiment, the end face of the pressing block 3 away from the rubber rod 5 is arranged with a heating coil 31, a control chip is arranged in the pressing bolt 4, the control chip is electrically connected with the heating coil 31, and the end of the pressing bolt 4 exposed outside the shell 1 is provided with a touch button 41 for controlling the on-off of the heating coil 31. The beneficial effect of such an arrangement is that when the heating coil 31 is powered, the circuit layout of the heating coil 31, the control chip and the touch button 41 herein belongs to the prior art, and will not be described in detail here. The heat is quickly transferred to the pressing block 3, and then synchronously conducted to the upper end face of the rubber rod 5. The conventional heating method often causes uneven heating of local parts, resulting in inconsistent deformation of each part of the rubber rod 5. However, this structure can heat the rubber rod 5 from the top position, and will not cause uneven heating of the overall structure due to simple bottom heating. This uniform heating ensures that the entire rubber rod 5 deforms synchronously, greatly improving the forming quality of the product. With the electrical connection of the control chip and the heating coil 31, and the control of the on-off of the heating coil 31 by the touch button 41 on the pressing bolt 4, the operator can accurately adjust the heating time and temperature according to the actual needs, and realize fine control of the heating and deformation process of the rubber rod 5.
[0023] The above examples are only one of the preferred specific examples of the present application, and the usual changes and replacements made by those skilled in the art within the scope of the technical scheme of the present application are all included in the protection scope of the present application.
Claims
1. A fixture for curing a self-lubricating fabric gasket, characterized by: The shell is provided with a cavity, and a machining cavity in the form of a cylinder is formed in the cavity. A sleeve is arranged in the machining cavity. The outer peripheral wall of the sleeve is in clearance fit with the inner wall of the machining cavity. An assembly space for accommodating a bearing outer ring to be machined is formed between the sleeve and the bottom surface of the machining cavity. A pressing block is fitted in the sleeve. The diameter of the pressing block is the same as the inner diameter of the sleeve. A rubber rod with a diameter smaller than the inner diameter of the bearing outer ring to be machined is arranged between the pressing block and the bottom surface of the machining cavity. A contact member for contacting the pressing block to press the rubber rod is fitted on the shell.
2. A fixture for curing a self-lubricating textile gasket according to claim 1, characterized in that: The shell is divided into a first shell and a second shell. The first shell and the second shell are fastened and connected by fastening bolts. A first sub-cavity in the form of a half cylinder is arranged on the first shell. A second sub-cavity in the form of a half cylinder is arranged on the second shell. The first sub-cavity and the second sub-cavity are combined to form a machining cavity. A first machining opening in the form of a half cylinder is arranged on the upper end surface of the first shell. A second machining opening in the form of a half cylinder is arranged on the upper end surface of the second shell. The first machining opening and the second machining opening are combined to form an operating hole for the contact member to contact the pressing block.
3. The fixture for curing a self-lubricating fabric gasket according to claim 2, wherein: The contact member is a pressing bolt, which is in threaded fit with the operating hole.
4. The fixture for curing a self-lubricating textile gasket according to claim 3, wherein: The bottom of the first shell and the bottom of the second shell are respectively provided with a combined groove. The combined groove of the bottom of the first shell and the bottom of the second shell is combined to form a heating groove.
5. The fixture for curing a self-lubricating fabric gasket according to claim 2, wherein: A heating coil is arranged on the end surface of the pressing block away from the rubber rod. A control chip is arranged in the pressing bolt. The control chip is electrically connected with the heating coil. A knob for controlling the on-off of the heating coil is arranged on the end of the pressing bolt exposed outside the shell.