Pressing rivet device for riveting metal sleeve in tubular beam
By designing a rivet pressing device including a guide section and a stamping section in the pipe beam, the problem of poor fixing effect when the wall thickness of the metal pipe beam is solved, and the stable riveting of the metal sleeve is achieved under structural limitations.
Patent Information
- Application Number
- CN202421908562.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The prior art is difficult to achieve the ideal fixation effect when the walls of metal pipe beams are thick, and structural reinforcement cannot be carried out under certain structural limitations.
A riveting device for riveting a metal sleeve in a pipe beam is designed, and the combination of the first rivet and the floating second rivet are used to realize the riveting of the metal sleeve through the structural design of the guide section and the stamping section.
The stability and structural strength of riveted metal sleeves in the pipe beam are realized, suitable for metal pipe beams of different thicknesses, and overcome obstacles to structural limitations.
Smart Images
Figure CN223011702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of riveting, in particular to a riveting device for riveting a metal sleeve in a tube beam. Background Art
[0002] Metal tube beams are widely used in the fields of automobile manufacturing, infrastructure engineering, aviation, chemical industry, etc. When connecting a metal tube beam with other structural members, the connecting holes are prone to deformation under force. The usual strengthening method is to add a support block at the connecting hole, and then form a deformation zone by pre-pressing the connecting hole of the metal tube beam to fix the support block. The problems existing in this kind of processing are as follows: First, for thin-walled metal tube beams, their tube walls are prone to deformation, and the fixing effect is acceptable. However, when the wall thickness of the metal tube beam is too thick, by pre-pressing the tube wall to deform to fix the support block, it is difficult to achieve an ideal fixing effect because the tube wall is not easy to deform; Second, for some metal tube beams, due to the limitation of the internal structure of the cavity or the assembly structure, the support block cannot be inserted from the side of the metal tube beam cavity, so this method cannot be used for structural strengthening. Summary of the Utility Model
[0003] The utility model is used to overcome the defects of the existing technology and provides a riveting device for riveting a metal sleeve in a tube beam to solve the problems mentioned in the background art.
[0004] To achieve the above object, the utility model adopts the following technical solutions:
[0005] A riveting device for riveting a metal sleeve in a tube beam includes a frame body, a workbench, a first riveting part, and a limiting component arranged thereon; guide columns are arranged on the workbench, and the number of guide columns is 2 - 4; the first riveting part consists of a sliding seat and a first punch arranged below it. A hole matching the guide column is arranged on the sliding seat, and a hydraulic cylinder is connected above the sliding seat. Driven by the hydraulic cylinder, the sliding seat can slide up and down along the guide column; a floating second riveting part is arranged on the workbench. Before riveting, the head of the second riveting part is in contact with the lower end of the metal sleeve inserted into the tube beam; the limiting component consists of a detection frame, a proximity switch, and a detection block. The proximity switch is arranged on the detection frame, and the detection block is arranged on the sliding seat; the detection block is used in combination with the proximity switch.
[0006] For the above-mentioned riveting device for riveting a metal sleeve in a tube beam, the second riveting part consists of a second punch and a second spring. A blind hole is arranged on the workbench. The blind hole is a stepped hole with a two-stage structure. The diameter of the upper section of the blind hole is larger than that of the lower section. The diameter of the upper section of the blind hole matches the outer diameter of the second punch, and the diameter of the lower section of the blind hole matches the outer diameter of the second spring. The two ends of the second spring are respectively connected to the bottom of the blind hole and the second punch. The head of the second punch protrudes from the blind hole and can float up and down.
[0007] The above riveting device for riveting a metal sleeve in a tube beam, the head of the first punch is a two-stage structure, composed of a first guiding section and a first stamping section; the outer diameter of the first guiding section is smaller than the inner diameter of the metal sleeve, and the first stamping section is an inverted cone structure; the head of the second punch is also a two-stage structure, composed of a second guiding section and a second stamping section, the outer diameter of the second guiding section matches the inner diameter of the metal sleeve, the second stamping section is a cone structure, and the taper on the side of the first stamping section is smaller than the taper on the side of the second stamping section.
[0008] In the above riveting device for riveting a metal sleeve in a tube beam, a floating pressing plate is arranged below the sliding seat, the floating pressing plate is connected with the sliding seat through a first spring, and a through hole matching the first punch is arranged on the floating pressing plate; under the action of the first spring, the floating pressing plate can be movably pressed against the tube beam.
[0009] In the above riveting device for riveting a metal sleeve in a tube beam, the height of the proximity switch on the detection frame is adjustable. Beneficial effects
[0010] Compared with the prior art, the utility model has the following advantages: First, by setting the first riveting part and the floating second riveting part, through the up-and-down follow-up of the two riveting parts, when riveting the metal sleeve in the tube beam, the upper and lower ends can be simultaneously turned up and formed by one stamping, and the floating second riveting part can also position the tube beam before riveting. Second, the heads of the first punch and the second punch are both two-stage structures of a guiding section and a stamping section. The guiding section has a guiding and positioning function, which is convenient for the punch head to insert into the metal sleeve, so as to facilitate the stamping section to stamp and deform. Third, the taper of the first stamping section is smaller than the taper of the second stamping section, and the flanging at the lower end of the metal sleeve is relatively delayed compared with the flanging at the upper end, ensuring that the metal sleeve can pass through the lower cavity wall of the tube beam and be flanged into shape. At the same time, after adopting this structural design, the clearance between the minimum aperture of the connecting hole and the aluminum alloy sleeve can be minimized before riveting, so as to make the riveting structure more stable and the structural strength higher. Description of the drawings
[0011] The following further details the utility model in conjunction with the drawings.
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the partial structure of the utility model;
[0014] Figure 3 It is another schematic diagram of the partial structure of the utility model.
[0015] Each label in the figure is respectively represented as:
[0016] 1. Frame body, 2. Workbench, 3. First riveting press part, 4. Hydraulic cylinder, 5. Second riveting press part, 6. Pipe beam, 7. Detection frame, 8. Metal sleeve, 2-1 Guide post, 3-1. Slide seat, 3-2. First punch, 3-21. First guiding section, 3-22. First stamping section, 3-3. Floating pressure plate, 3-4. First spring, 3-5. Detection block, 5-1. Second punch, 5-11. Second guiding section, 5-12. Second stamping section, 5-2. Second spring, 7-1. Proximity switch. Detailed implementation mode
[0017] The present utility model will be further described in detail below with reference to the drawings and embodiments.
[0018] As Figures 1-3 shown, the present utility model includes a frame body 1 and a workbench 2, a first riveting press part 3, and a limiting component arranged thereon. Guide posts 2-1 are arranged on the workbench 2, and the number of the guide posts 2-1 is 2-4.
[0019] The first riveting press part 3 is composed of a slide seat 3-1 and a first punch 3-2 arranged below it. A hole matching the guide post 2-1 is arranged on the slide seat 3-1. A hydraulic cylinder 4 is connected above the slide seat 3-1. Driven by the hydraulic cylinder 4, the slide seat 3-1 can slide up and down along the guide post 2-1.
[0020] A floating second riveting press part 5 is arranged on the workbench 2. Before riveting, the head of the second riveting press part 5 is inserted from below the connection hole of the pipe beam 6 and is kissed with the lower end of the metal sleeve 8. In the first half of the riveting process, the second riveting press part 5 moves downward together with the metal sleeve 8 under the pressure of the first riveting press part 3. In the second half of the riveting process, the second riveting press part 5 completes the riveting of the lower end of the metal sleeve 8.
[0021] The floating second riveting press part 5 adopts the following design: the second riveting press part 5 is composed of a second punch 5-1 and a second spring 5-2. A blind hole is arranged on the workbench 2. The blind hole is a stepped hole with a two-stage structure. The diameter of the upper section of the blind hole is larger than that of the lower section. The diameter of the upper section of the blind hole matches the outer diameter of the second punch 5-1, and the diameter of the lower section of the blind hole matches the outer diameter of the second spring 5-2. Two ends of the second spring 5-2 are respectively connected to the bottom of the blind hole and the second punch 5-1. The head of the second punch 5-1 protrudes out of the blind hole and can float up and down.
[0022] The design of the punch is as follows: The head of the first punch 3-2 has a two-stage structure, which consists of a first guiding section 3-21 and a first stamping section 3-22; the outer diameter of the first guiding section 3-21 is smaller than the inner diameter of the metal sleeve 8, and the first stamping section 3-22 has an inverted cone structure; the head of the second punch 5-1 also has a two-stage structure, which consists of a second guiding section 5-11 and a second stamping section 5-12. The outer diameter of the second guiding section 5-11 matches the inner diameter of the metal sleeve 8, and the second stamping section 5-12 has a cone structure. The taper of the side surface of the first stamping section 3-22 is smaller than the taper of the side surface of the second stamping section 5-12.
[0023] The inverted cone structure of the first stamping section 3-22 is actually an inverted frustum structure, and the cone structure of the second stamping section 5-12 is a frustum structure. The angle between the side surface of the first stamping section 3-22 and the vertical plane is smaller than the angle between the side surface of the second stamping section 5-12 and the vertical plane, that is, the taper of the side surface of the first stamping section 3-22 is smaller than the taper of the side surface of the second stamping section 5-12. During stamping, the upper-end flanging riveting of the metal sleeve 8 is easier than the lower-end flanging riveting. This structural design takes into account two aspects: First, in the first half of the riveting process, the second riveting part 5 moves downward under the pressure of the first riveting part 3 together with the metal sleeve 8. Only by delaying the lower-end flanging of the metal sleeve 8 can it be ensured that the metal sleeve 8 can pass through the lower cavity wall of the pipe beam 6. Second, after the riveting is completed, the smaller taper of the side surface of the first stamping section 3-22 can ensure the smooth extraction of the first punch 3-2.
[0024] Matched with the first stamping section 3-22 and the second stamping section 5-12, the connecting hole on the pipe beam 6 also has a two-stage tapered hole design. The connecting hole is the first hole on the upper pipe wall of the pipe beam 6 and the second hole on the lower pipe wall. The first hole is a tapered hole, and the second hole is an inverted tapered hole. The first hole and the second hole are coaxial, and the minimum diameter matches the outer diameter of the metal sleeve 8. The angle between the tapered surface of the first hole and the horizontal plane is α, and the angle between the tapered surface of the second hole and the horizontal plane is δ. α is greater than δ, that is, the taper of the first hole is smaller than the taper of the second hole. α can take a value of 1.25δ - 1.5δ, and the value range of δ can be 45 - 60 degrees.
[0025] To ensure stability during the riveting process and material stripping after riveting is completed: A floating pressing plate 3-3 is arranged below the sliding seat 3-1. The floating pressing plate 3-3 is connected to the sliding seat 3-1 through a first spring 3-4. A through hole matching the first punch 3-2 is arranged on the floating pressing plate 3-3. Under the action of the first spring 3-4, the floating pressing plate 3-3 can be movably pressed against the pipe beam 6. Here, being movable means being able to float up and down.
[0026] The limit component is designed as follows: The limit component consists of a detection frame 7, a proximity switch 7-1, and a detection block 3-5. The proximity switch 7-1 is arranged on the detection frame 7, and the detection block 3-5 is arranged on the sliding seat 3-1. The detection block 3-5 is used in matching with the proximity switch 7-1, and the detection frame 7 is connected to the frame body (1). The proximity switch can be an inductive proximity switch, and the Autonics PRT series proximity switch can be selected. The detection block 3-5 arranged on the sliding seat 3-1 is a metal block, and the metal block can be circular or square, and is used in matching with the proximity switch 7-1. When it approaches the proximity switch 7-1, it indicates that the riveting is completed, thereby controlling the hydraulic cylinder 4 to stop descending and move in the reverse direction. To be applicable to the riveting of different metal pipe fittings: The height of the proximity switch 7-1 on the detection frame 7 is adjustable.
Claims
1. A riveting device for riveting a metal sleeve in a pipe beam, characterized in that: The invention comprises a frame (1), a workbench (2) arranged thereon, a first riveting part (3), and a limit assembly; a guide column (2-1) is arranged on the workbench (2), and the number of the guide columns (2-1) is 2-4; the first riveting part (3) is composed of a slide seat (3-1) and a first punch (3-2) arranged below the slide seat (3-1); a hole matching the guide column (2-1) is arranged on the slide seat (3-1); a hydraulic cylinder (4) is connected above the slide seat (3-1); and under the drive of the hydraulic cylinder (4), the slide seat (3-1) can move along the guide column (2-1). The column (2-1) slides up and down; a floating second riveting part (5) is arranged on the workbench (2); before riveting, the head of the second riveting part (5) is inserted from below the connection hole of the tube beam (6) and abuts against the lower end of the metal sleeve (8); the limit assembly is composed of a detection frame (7), a proximity switch (7-1), and a detection block (3-5); the proximity switch (7-1) is arranged on the detection frame (7), and the detection block (3-5) is arranged on the slide seat (3-1); the detection block (3-5) and the proximity switch (7-1) are matched for use.
2. The riveting device for riveting a metal sleeve in a pipe beam according to claim 1, characterized in that: The second riveting portion (5) is composed of a second punch (5-1) and a second spring (5-2). A blind hole is provided on the workbench (2). The blind hole is a stepped hole with a two-stage structure. The diameter of the upper section of the blind hole is larger than the diameter of the lower section. The diameter of the upper section of the blind hole matches the outer diameter of the second punch (5-1). The diameter of the lower section of the blind hole matches the outer diameter of the second spring (5-2). The two ends of the second spring (5-2) are respectively connected to the bottom of the blind hole and the second punch (5-1). The head of the second punch (5-1) protrudes out of the blind hole and can float up and down.
3. The riveting device for riveting a metal sleeve in a pipe beam according to claim 2, characterized in that: The head of the first punch (3-2) is a two-section structure, consisting of a first guide section (3-21) and a first punch section (3-22); the outer diameter of the first guide section (3-21) is smaller than the inner diameter of the metal sleeve (8), and the first punch section (3-22) is an inverted cone structure; the head of the second punch (5-1) is also a two-section structure, consisting of a second guide section (5-11) and a second punch section (5-12); the outer diameter of the second guide section (5-11) matches the inner diameter of the metal sleeve (8), the second punch section (5-12) is a cone structure, and the taper of the side surface of the first punch section (3-22) is smaller than the taper of the side surface of the second punch section (5-12).
4. The riveting device for riveting a metal sleeve in a pipe beam according to claim 1, characterized in that: A floating pressure plate (3-3) is provided below the slide seat (3-1); the floating pressure plate (3-3) is connected to the slide seat (3-1) via a first spring (3-4); a through hole matching the first punch (3-2) is provided on the floating pressure plate (3-3); and the floating pressure plate (3-3) can be movably pressed against the tube beam (6) under the action of the first spring (3-4).
5. The riveting device for riveting a metal sleeve in a pipe beam according to claim 1, characterized in that: The height of the proximity switch (7-1) on the detection frame (7) is adjustable.