Anti-rotation lightweight vacuum buffer rod
By using aerospace aluminum alloy material and polyformaldehyde inner liner, combined with return spring and anti-slewing limit channel design, the existing vacuum buffer rod has been solved, and lightweight, high-precision and anti-slewing are achieved. cushioning effect and improve service life.
Patent Information
- Application Number
- CN202421909584.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The weight of the existing vacuum buffer rod is relatively large, resulting in excessive load on the head, and the anti-sliding design has poor accuracy, poor wear resistance and short service life.
It uses a rod body and shell made of aerospace aluminum alloy material. The inner liner is made of polyformaldehyde, combined with a return spring and anti-swing limit channel design to ensure a firm connection between the inner liner and the shell and anti-swing function.
The vacuum buffer rod with light weight, high accuracy and anti-rotating function is realized, which reduces the head load, improves service life, and avoids powder loss and lag problems of metal bushings.
Smart Images
Figure CN222479337U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the design technology of a buffer rod, in particular to a buffer rod connected between a vacuum generator and a suction cup for buffering, specifically to an anti-rotation lightweight vacuum buffer rod. Background Art
[0002] In the prior art, the rod body of the buffer rod between the vacuum generator and the suction cup is mostly made of steel pipe, which is relatively heavy. When it is integrated on the machine head on a large scale, it will cause the machine head to be overloaded. At present, there are usually two designs for the rod body of the traditional buffer rod: one is that the rod can rotate, and its rod shape mostly adopts a cylindrical structure. The other is an anti-rotation non-return rod, which adopts a square rod. The disadvantages of the square rod are poor precision, poor wear resistance of the metal bushing installed, copper content, powder loss, and easy jamming. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a light-weight, high-precision, anti-rotation and long-life anti-rotation lightweight vacuum buffer rod in view of the current status of the above-mentioned prior art.
[0004] The technical solution adopted by the utility model to solve the above technical problems is:
[0005] A lightweight anti-rotation vacuum buffer rod, comprising a rod body and an outer shell both made of aviation aluminum alloy materials, and an inner sleeve and a return spring made of polyformaldehyde; the inner sleeve is arranged in the outer shell; the inner sleeve and the outer shell are integrally formed by injection molding; an axial ventilation channel is processed in the rod body, and the rod body is composed of a threaded section, a spring limiting section, a buffer guide section and a rear tail section connected in sequence from top to bottom; the return spring is sleeved in the sleeve hole of the inner sleeve to provide elastic buffering force for the inner sleeve, and the inner ring of the return spring is sleeved on the spring limiting section of the rod body; a trachea joint whose bottom surface cooperates with the upper end limiting top connection of the inner sleeve is spirally installed on the threaded section; an anti-rotation limiting groove is axially processed on the outer circumferential surface of the buffer guide section for preventing the inner sleeve from circumferential rotation when moving up and down, and a raised anti-rotation rib for cooperating with the sliding sleeve of the anti-rotation limiting groove is processed on the inner wall of the sleeve hole of the inner sleeve.
[0006] To optimize the above technical solutions, the specific measures taken also include:
[0007] The upper and lower ends of the inner sleeve extend out of the upper and lower ends of the outer shell to form an annular anti-collision guard plate coated with plastic on the upper and lower end surfaces of the outer shell. The plate surface of the annular anti-collision guard plate is formed with multiple raised impact noise reduction points with equal curvature.
[0008] The diameter of the threaded section is smaller than that of the spring limiting section, which is smaller than that of the buffering guide section, which is smaller than that of the rear tail section; the diameter of the liner sleeve hole is matched with the diameter of the buffering guide section.
[0009] A spring limiting table is formed between the connection between the above-mentioned buffer guide section and the spring limiting section, and a bushing limiting table is formed between the connection between the rear tail section and the buffer guide section; the bottom end of the return spring is connected to the spring limiting table, and the top end of the return spring is connected to the step surface formed in the inner bushing hole.
[0010] An external assembly thread is formed on the outer peripheral surface of the shell, and a positioning nut and a locking nut are spirally arranged on the shell.
[0011] The rear section is coaxially enlarged with the ventilation channel to form a threaded assembly hole, and the outer circumferential surface of the rear section is cut 180 degrees apart in the circumferential direction to form rectangular sections (14b) for easy installation using tools.
[0012] The buffer guide section is provided with three anti-rotation limit grooves of equal arc and circumferential distance of 120 degrees.
[0013] The impact noise reduction point formed on the annular anti-collision guard plate at the upper end of the inner sleeve cooperates with the bottom surface of the trachea joint when the inner sleeve is in the original position; the impact noise reduction point formed on the annular anti-collision guard plate at the lower end of the inner sleeve cooperates with the top surface of the sleeve limit table when the inner sleeve descends to the bottom dead point.
[0014] Compared with the prior art, the rod body and the outer shell of the utility model are both made of aviation aluminum alloy material, which is light in weight and high in mechanical strength, and is suitable for large-scale integration on the nose. The material of the inner sleeve is polyformaldehyde, and the inner sleeve and the outer shell are molded into one piece by injection molding. The mold molding has high precision, small contact surface, low friction, low noise and long service life. The utility model is formed with a concave anti-rotation limit groove on the buffer guide section of the rod body, and a raised anti-rotation rib is formed on the inner wall of the sleeve hole of the inner sleeve. The anti-rotation rib can be inserted into the anti-rotation limit groove, so that the inner sleeve and the outer shell can move up and down along the guide of the anti-rotation limit groove, and prevent the inner sleeve from rotating circumferentially relative to the rod body during the movement, thereby realizing the anti-rotation function. The advantages of the utility model are: high precision, low noise, no powder loss, light weight and long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a cross-sectional structural diagram of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the utility model;
[0017] Figure 3It is an exploded view of the utility model;
[0018] Figure 4 This is a state diagram of the inner liner of the utility model when it is buffered and moves downward to the lowest end. DETAILED DESCRIPTION
[0019] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.
[0020] Figures 1 to 4 It is a structural schematic diagram of the utility model.
[0021] The accompanying drawings are marked as follows: spring limit table A, bushing limit table B, rod body 1, ventilation channel 1a, threaded section 11, spring limit section 12, buffer guide section 13, anti-rotation limit groove 13a, rear tail section 14, assembly threaded hole 14a, rectangular section 14b, outer shell 2, assembly external thread 2a, inner bushing 3, screw sleeve hole 3a, anti-rotation rib 3b, annular anti-collision guard plate 31, impact noise reduction point 31a, reset spring 4, trachea joint 5, positioning nut 6, locking nut 7.
[0022] like Figures 1 to 4 As shown, the utility model discloses an anti-rotation lightweight vacuum buffer rod, which is mainly used for connecting the vacuum generator and the suction cup to play a buffering role.
[0023] The anti-rotation lightweight vacuum buffer rod includes a rod body 1 with a cylindrical structure, an outer shell 2, an inner bushing 3 and a reset spring 4. The rod body 1 and the outer shell 2 of the utility model are made of aviation aluminum alloy materials, so they are light in weight and high in mechanical strength. When they are integrated on the machine head on a large scale, the machine head will have a relatively light load, which will enhance the running accuracy of the machine. The material of the inner bushing 3 of the utility model is polyoxymethylene, that is, POM material. The bushings in traditional technology are mostly made of metal materials. The bushings of metal materials have problems such as poor wear resistance, copper, powder loss, and easy jamming. The inner bushing 3 of polyoxymethylene material does not lose powder during use, so it will not pollute the product. The inner bushing 3 is POM, which does not contain copper and is suitable for the lithium battery industry. It does not lose powder and is suitable for the panel and semiconductor industry. The inner bushing 3 and the outer shell 2 of the utility model are molded into one piece, so that the inner bushing 3 and the outer shell 2 can be firmly connected into a whole. The mold injection molding has high precision and small contact surface, and can achieve low friction, low noise and long service life. The outer shells in traditional technology are all inlaid with bushings and are designed to be square, which has relatively large friction resistance and very poor accuracy.
[0024] from Figure 3 and Figure 4It can be seen that the rod body 1 of the utility model is axially through-machined with a ventilation channel 1a, and the outer peripheral shape of the rod body 1 is composed of a threaded section 11, a spring limiting section 12, a buffer guide section 13 and a rear tail section 14 connected in sequence from top to bottom. The return spring 4 is sleeved in the sleeve hole 3a of the inner sleeve 3, and the return spring 4 is used to provide elastic buffering force for the inner sleeve 3. The inner ring of the return spring 4 is sleeved on the spring limiting section 12 of the rod body 1. The threaded section 11 is spirally mounted with a trachea joint 5 whose bottom surface matches the upper end limiting top connection of the inner sleeve 3, and the trachea joint 5 defines the position of the inner sleeve 3 at the top dead center. The utility model has at least one concave anti-rotation limit groove 13a axially processed on the outer peripheral surface of the buffer guide section 13. The anti-rotation limit groove 13a is used to prevent the inner bushing 3 from rotating circumferentially relative to the rod body 1 when the inner bushing 3 moves up and down. At the same time, the anti-rotation limit groove 13a can also provide guidance for the up and down movement of the inner bushing 3 to ensure the stability of the movement of the inner bushing 3. The inner wall of the sleeve hole 3a of the inner bushing 3 of the utility model is processed with a raised anti-rotation rib 3b, which can be inserted into the anti-rotation limit groove 13a and slide up and down in the anti-rotation limit groove 13a to realize the anti-rotation function of the inner bushing 3.
[0025] In the embodiment Figure 1 As shown, the upper and lower ends of the inner sleeve 3 of the utility model extend out of the upper and lower ends of the outer shell 2 to form an annular anti-collision guard plate 31 which is plastic-coated on the upper and lower end surfaces of the outer shell 2, and the plate surface of the annular anti-collision guard plate 31 is formed with multiple raised impact noise reduction points 31a with equal curvature.
[0026] In the embodiment Figure 3 As shown, the diameter of the threaded section 11 of the utility model is smaller than the diameter of the spring limiting section 12, the diameter of the spring limiting section 12 is smaller than the diameter of the buffer guide section 13, and the diameter of the buffer guide section 13 is smaller than the diameter of the rear tail section 14. The diameter of the sleeve hole 3a of the inner bushing 3 is adapted to the diameter of the buffer guide section 13.
[0027] A spring limiting table surface A is formed between the buffer guide section 13 and the spring limiting section 12, and a bushing limiting table surface B is formed between the rear tail section 14 and the buffer guide section 13. The bottom end of the return spring 4 is connected to the spring limiting table surface A, and the top end of the return spring 4 is connected to the step surface formed in the sleeve hole 3a of the inner sleeve 3.
[0028] In the embodiment Figure 1 As shown, an external assembly thread 2 a is formed on the outer circumferential surface of the housing 2 of the present invention, and a positioning nut 6 and a locking nut 7 are spirally arranged on the housing 2 .
[0029] In the embodiment Figure 4As shown, the rear section 14 of the utility model is coaxially expanded with the ventilation channel 1a to form a mounting threaded hole 14a, and the outer circumferential surface of the rear section 14 is cut 180 degrees apart in the circumferential direction to form rectangular sections 14b for convenient installation using tools.
[0030] In the embodiment, the buffer guide section 13 of the utility model is processed with three anti-rotation limit grooves 13a with equal arc and circumferential distance of 120 degrees. The three anti-rotation limit grooves 13a are provided to realize the anti-rotation function, and the accuracy can reach 0.02mm, while the traditional accuracy is only 0.5mm.
[0031] In the embodiment, the impact noise reduction point 31a formed on the annular anti-collision guard plate 31 at the upper end of the inner sleeve 3 cooperates with the bottom surface of the air pipe joint 5 when the inner sleeve 3 is in the original position; the impact noise reduction point 31a formed on the annular anti-collision guard plate 31 at the lower end of the inner sleeve 3 cooperates with the sleeve limit table B when the inner sleeve 3 descends to the bottom dead point.
[0032] Compared with similar products, the utility model has the advantages of high precision, low noise, no powder loss, light weight and long service life.
[0033] The above embodiments provide a systematic and detailed description of the present invention. They are only specific preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An anti-rotation lightweight vacuum buffer rod, comprising a rod body (1) and an outer shell (2) both made of aviation aluminum alloy material, an inner sleeve (3) and a return spring (4) made of polyoxymethylene material; the inner sleeve (3) is sleeved in the outer shell (2); the characteristics are: The inner sleeve (3) and the outer shell (2) are integrally formed by injection molding; an axially through-going ventilation channel (1a) is machined in the rod body (1); the rod body (1) is composed of a threaded section (11), a spring limiting section (12), a buffer guide section (13) and a rear tail section (14) connected in sequence from top to bottom; the return spring (4) is sleeved in the sleeve hole (3a) of the inner sleeve (3) to provide elastic buffering force for the inner sleeve (3); the inner ring of the return spring (4) is sleeved in the sleeve hole (3a) of the rod body (1) The spring limiting section (12) is spirally mounted on the threaded section (11) with a trachea joint (5) whose bottom surface matches the upper limiting top of the inner sleeve (3); the outer peripheral surface of the buffer guide section (13) is axially processed with an anti-rotation limiting groove (13a) for preventing the inner sleeve (3) from rotating in the circumferential direction when moving up and down, and the inner wall of the sleeve hole (3a) of the inner sleeve (3) is processed with a raised anti-rotation rib (3b) for matching with the sliding sleeve of the anti-rotation limiting groove (13a).
2. The anti-rotation lightweight vacuum buffer rod according to claim 1 is characterized by: The upper and lower ends of the inner sleeve (3) extend out of the upper and lower ends of the outer shell (2) to form an annular anti-collision guard plate (31) molded on the upper and lower end surfaces of the outer shell (2), and the plate surface of the annular anti-collision guard plate (31) is formed with multiple raised impact noise reduction points (31a) of equal curvature.
3. The anti-rotation lightweight vacuum buffer rod according to claim 2 is characterized by: The diameter of the threaded section (11) is smaller than the diameter of the spring limiting section (12), the diameter of the spring limiting section (12) is smaller than the diameter of the buffer guide section (13), the diameter of the buffer guide section (13) is smaller than the diameter of the rear tail section (14); the diameter of the sleeve hole (3a) of the inner bushing (3) is matched with the diameter of the buffer guide section (13).
4. The anti-rotation lightweight vacuum buffer rod according to claim 3 is characterized by: A spring limiting table (A) is formed between the connection between the buffer guide section (13) and the spring limiting section (12), and a bushing limiting table (B) is formed between the connection between the rear tail section (14) and the buffer guide section (13); the bottom end of the return spring (4) is abutted against the spring limiting table (A), and the top end of the return spring (4) is abutted against a step surface formed in the sleeve hole (3a) of the inner sleeve (3).
5. The anti-rotation lightweight vacuum buffer rod according to claim 4 is characterized by: An external assembly thread (2a) is formed on the outer peripheral surface of the shell (2), and a positioning nut (6) and a locking nut (7) are spirally arranged on the shell (2).
6. The anti-rotation lightweight vacuum buffer rod according to claim 5, characterized in that: The rear tail section (14) is coaxially enlarged to form a threaded assembly hole (14a) with the ventilation channel (1a), and the outer circumferential surface of the rear tail section (14) is cut 180 degrees apart in the circumferential direction to form rectangular sections (14b) for easy installation using tools.
7. The anti-rotation lightweight vacuum buffer rod according to claim 6 is characterized by: The buffer guide section (13) is provided with three anti-rotation limiting grooves (13a) of equal arc and circumferentially spaced 120 degrees apart.
8. The anti-rotation lightweight vacuum buffer rod according to claim 7 is characterized by: The impact noise reduction point (31a) on the annular anti-collision guard plate (31) at the upper end of the inner sleeve (3) contacts and cooperates with the bottom surface of the air pipe joint (5) when the inner sleeve (3) is in the original position; the impact noise reduction point (31a) formed on the annular anti-collision guard plate (31) at the lower end of the inner sleeve (3) contacts and cooperates with the sleeve limit table (B) when the inner sleeve (3) moves downward to the bottom dead center.