Split type rivet-free riveting machine

Abstract

The present invention provides a split type rivetless riveting machine, which includes an oil inlet main pipe, a reversing valve assembly, an oil cylinder assembly and a riveting assembly. The reversing valve assembly includes a reversing valve and a reversing valve connecting seat, the reversing valve is connected to the oil inlet main pipe, and the reversing valve connecting seat has a first oil circuit and a second oil circuit connected to the reversing valve. The oil cylinder assembly includes an oil cylinder and a push shaft arranged in the oil cylinder, the push shaft divides the oil cylinder into a rod chamber and a rodless chamber, the rodless chamber wall of the oil cylinder has a first oil hole connected to the first oil circuit, and the rod chamber wall has a second oil hole connected to the second oil circuit. The riveting assembly includes a static riveting component and a dynamic riveting component, and the dynamic riveting component is connected to the end of the push shaft; the oil enters the rodless chamber of the cylinder through the first oil circuit on the reversing valve seat and pushes the push shaft forward, and the push shaft drives the dynamic riveting component to move in the direction of the static riveting component to perform riveting; after the riveting is completed, the reversing valve switches direction, and the oil enters the rod chamber of the cylinder through the second oil circuit on the reversing valve seat and pushes the push shaft to retreat and reset.

Description

Technical Field

[0001] The invention relates to a riveting machine, and in particular to a rivet-free riveting machine. Background Art

[0002] The rivetless riveting process is simple and does not require pre- or post-processing (such as punching, surface treatment). This riveting method not only solves the problem that traditional processes cannot connect metal materials such as aluminum, magnesium, and titanium. Furthermore, for workpieces with a coating or paint layer on the surface, the surface will not be damaged after riveting; and multi-layer or interlayer materials can be connected. In addition, compared with traditional riveting processes, rivetless riveting work also has the advantages of high efficiency, no noise during work, no smoke and dust pollution, low cost, simple operation, and good quality of connections, which is very popular in the international market.

[0003] With the continuous development of technology, the connection between light materials and steel can be connected by riveting. At present, pneumatic riveting machines are more commonly used. Pneumatic riveting machines use rivets to rivet two materials, which is pollution-free and will not damage sheet metal parts. There are two types of existing pneumatic riveting machines. One is a large pneumatic riveting machine, which has high pneumatic pressure but is large and bulky. It cannot be used in many occasions, such as on-site implementation of construction sites or home decoration sheet metal parts. The pneumatic force of small pneumatic riveting machines is relatively small, which is not conducive to the connection and assembly of thick sheet metal parts. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a split type rivet-free riveting machine.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a split type rivetless riveting machine, which includes an oil inlet main pipe, a reversing valve assembly, an oil cylinder assembly and a riveting assembly. The reversing valve assembly includes a reversing valve and a reversing valve connecting seat, the reversing valve is connected to the oil inlet main pipe, and the reversing valve connecting seat has a first oil circuit and a second oil circuit connected to the reversing valve. The oil cylinder assembly includes an oil cylinder and a push shaft arranged in the oil cylinder, the push shaft divides the oil cylinder into a rod chamber and a rodless chamber, the rodless chamber wall of the oil cylinder has a first oil hole connected to the first oil circuit, and the rod chamber wall has a second oil hole connected to the second oil circuit. The riveting assembly includes a static riveting component and a dynamic riveting component, and the dynamic riveting component is connected to the end of the push shaft; the oil enters the rodless chamber of the cylinder through the first oil circuit on the reversing valve seat and pushes the push shaft forward, and the push shaft drives the dynamic riveting component to move in the direction of the static riveting component to perform riveting; after the riveting is completed, the reversing valve switches direction, and the oil enters the rod chamber of the cylinder through the second oil circuit on the reversing valve seat and pushes the push shaft to retreat and reset.

[0006] According to one embodiment of the present invention, the dynamic riveting assembly includes a dynamic riveting arm and a dynamic riveting die. The dynamic riveting arm includes a main body and an extension portion extending along one side of the main body. The extension portion is rotatably connected to the static riveting assembly, and a rotation fulcrum is formed at the connection. One end of the main body is movably connected to a push shaft, and the other end is connected to the dynamic riveting die. Under the action of the push shaft, the dynamic riveting die moves in a circular arc around the rotation fulcrum.

[0007] According to an embodiment of the present invention, an outer side wall of the main body of the dynamic riveting arm, which is away from the dynamic riveting die, has an inclined guide surface.

[0008] According to an embodiment of the present invention, the riveting assembly further comprises a riveting frame connected to the oil cylinder, the static riveting assembly comprises a static riveting arm and a static riveting die, and the static riveting arm is connected to the riveting frame.

[0009] According to an embodiment of the present invention, the riveting assembly further comprises a demoulding component disposed on the static riveting component or the dynamic riveting component, and the demoulding component separates the plate from the dynamic riveting die or the static riveting die after riveting is completed.

[0010] According to one embodiment of the present invention, the demoulding assembly includes a lower demoulding member connected to the dynamic riveting assembly and located below the plate to be riveted, and an upper demoulding member connected to the static riveting assembly and located above the plate to be riveted.

[0011] According to one embodiment of the present invention, the upper demolding part includes an upper demolding pressure plate and a pressure plate connecting arm connecting the upper demolding pressure plate and the static riveting arm. The upper demolding pressure plate has a through hole coaxial with the dynamic riveting die. The diameter of the through hole is larger than the maximum diameter of the dynamic riveting die. The dynamic riveting die penetrates the through hole to rivet the plate located under the upper demolding pressure plate.

[0012] According to one embodiment of the present invention, the lower demolding member includes a pair of demolding claws connected to both sides of the dynamic riveting arm, and the claws of the demolding claws are located below the plate. After the riveting is completed, following the retreat of the push shaft, the dynamic riveting arm drives the demolding claws to move upward, and the claws of the demolding claws pry up the plate.

[0013] According to an embodiment of the present invention, the split-type rivet-free riveting machine further includes a handle which is sleeved on the outside of the oil inlet main pipe and connected to the reversing valve.

[0014] In summary, in the split-type rivetless riveting provided by the present invention, the oil inlet main pipe, the reversing valve assembly and the oil cylinder assembly realize the hydraulic drive of the riveting assembly. Compared with the traditional pneumatic drive method, the hydraulic drive method can provide a greater driving force at the same volume, thereby greatly improving the firmness of the rivetless riveting. The first oil circuit and the second oil circuit in the reversing valve connecting seat realize the oil circuit connection between the reversing valve and the oil cylinder, and the movement direction of the oil in the two oil circuits changes with the drive of the reversing valve. The change in the movement direction of the oil enables the push shaft in the oil cylinder to achieve reciprocating motion. There is no need to set any oil leakage trigger switch in the oil cylinder, which greatly simplifies the structure of the oil circuit, thereby further reducing the volume of the riveting machine and realizing the miniaturization of the riveting machine.

[0015] Furthermore, the dynamic riveting part is movably connected to the push shaft and the extension part on the dynamic riveting arm is also movably connected to the static riveting arm. This arrangement enables the end of the dynamic riveting arm to move in an arc under the action of the push shaft, and its movement direction is not coaxial with the movement direction of the push shaft. This arrangement greatly reduces the axial length of the riveting machine, thereby making its structure more compact. In addition, the riveting assembly also includes a demoulding component, which can separate the packaging material from the dynamic riveting die or the static riveting die after riveting, realizing automatic demoulding, which is more convenient to use.

[0016] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic structural diagram of a rivet-free riveting machine provided in one embodiment of the present invention.

[0018] Figure 2 Shown Figure 1 main view.

[0019] Figure 3 Shown Figure 1 Side view of.

[0020] Figure 4 Shown Figure 1 Schematic diagram of the decomposition.

[0021] Figure 5 Shown Figure 1 sectional view of .

[0022] Figure 6 The figure shows the flow diagram of oil during riveting.

[0023] Figure 7 The figure shows the flow diagram of oil when the push shaft is reset. DETAILED DESCRIPTION

[0024] like Figures 1 to 5As shown, the split-type rivetless riveting machine provided in this embodiment includes an oil inlet manifold 1, a reversing valve assembly 2, an oil cylinder assembly 3 and a riveting assembly 4. The reversing valve assembly 2 includes a reversing valve 21 and a reversing valve connecting seat 22. The reversing valve 21 is connected to the oil inlet manifold 1. The reversing valve connecting seat 22 has a first oil circuit 221 and a second oil circuit 222 connected to the reversing valve 21. The oil cylinder assembly 3 includes an oil cylinder 31 and a push shaft 32 arranged in the oil cylinder 31. The push shaft 32 divides the oil cylinder into a rod chamber 31a and a rodless chamber 31b. The rodless chamber wall of the oil cylinder has a first oil hole 311 connected to the first oil circuit, and the rod chamber wall has a second oil hole 312 connected to the second oil circuit. The riveting assembly 4 includes a static riveting assembly 41 and a dynamic riveting assembly 42. The dynamic riveting assembly 41 is connected to the end of the push shaft 32. The oil enters the rodless chamber 31a of the oil cylinder through the first oil passage 221 on the reversing valve seat and pushes the push shaft 31 forward. The push shaft 31 drives the dynamic riveting assembly 41 to move in the direction where the static riveting assembly 42 is located to perform riveting. Figure 6 As shown in the figure, the direction of the arrow is the direction of movement of the oil. After the riveting is completed, the reversing valve 21 switches direction, and the oil enters the rod chamber 31b of the oil cylinder through the second oil path 222 on the reversing valve seat and pushes the push shaft to retreat and reset. Figure 7 As shown, the direction of the arrow in the figure is the direction of movement of the oil.

[0025] The split-type rivetless riveting machine provided in this embodiment provides power for the riveting assembly in a hydraulic manner. Compared with the traditional pneumatic type, its riveting force is very large, which greatly improves the firmness of the rivetless riveting. The two oil circuits in the reversing valve seat 22 that respectively connect the reversing valve 21 and the two oil chambers of the oil cylinder realize the reciprocating motion of the push shaft. There is no need to set an oil drain switch on the oil cylinder or the push shaft, which greatly simplifies the structure of the oil circuit, thereby greatly reducing the volume of the riveting machine and realizing the miniaturization of the riveting machine. In addition, in this embodiment, the reversing valve assembly 2, the oil cylinder assembly 3 and the riveting assembly 4 are all split and detachably connected, and this structure makes the replacement and maintenance of each component very convenient.

[0026] To facilitate the user to operate the reversing valve 21, in this embodiment, the split type rivetless riveting machine further includes a handle 5 which is sleeved on the outside of the oil inlet main pipe 1 and connected to the reversing valve 21. The outside of the handle 5 is provided with a plurality of anti-slip strips distributed along the circumferential direction.

[0027] In this embodiment, the dynamic riveting assembly 41 includes a dynamic riveting arm 411 and a dynamic riveting die 412. The dynamic riveting arm 411 includes a main body 4111 and an extension 4112 extending along one side of the main body 4111. The extension 4112 is rotatably connected to the static riveting assembly 42, and a rotation fulcrum A is formed at the connection. One end of the main body 4112 is movably connected to the push shaft 32, and the other end is connected to the dynamic riveting die 412. Under the action of the push shaft 32, the dynamic riveting die 412 moves in an arc around the rotation fulcrum. This arrangement allows the main body 4112 to rotate around the fulcrum when the push shaft moves forward, and one end of the main body is lifted upward by the thrust of the push shaft 32, while the end thereof drives the dynamic riveting die 412 to move downward.

[0028] In a conventional riveting machine, the riveting direction is along the direction of the push shaft. This setting makes the axial length of the entire riveting machine very long. More importantly, on the other hand, the user can only rivet along the axial direction during operation, and cannot rivet fixed plates at other angles and directions, which is very inconvenient to use. In this embodiment, the movable connection between the movable riveting arm 411 and the push shaft 32 and the movable connection between the extension 4112 and the static riveting arm make the riveting direction and the direction of the push shaft form an angle. This not only reduces the axial length of the riveting machine, but also allows the user to rivet plates in different directions and angles by rotating the riveting machine, which well solves the problem of the axial conventional riveting machine.

[0029] Furthermore, in this embodiment, the outer wall of the main body 4111 of the dynamic riveting arm away from the dynamic riveting die 412 has an inclined guide surface 4111a. The arrangement greatly reduces the volume of the main body 4111 of the dynamic riveting arm, so that it can penetrate into a small space area to rivet materials.

[0030] In this embodiment, the riveting assembly 4 further includes a riveting frame 43 connected to the oil cylinder 31, and the static riveting assembly 42 includes a static riveting arm 421 and a static riveting die 422, and the static riveting arm 421 is connected to the riveting frame 43. Specifically, Figure 5 As shown, the positioning pin shaft 10 passes through the extension part 4112 on the static riveting arm 421 and the dynamic riveting arm and fixes the two on the riveting frame 43. The front end of the riveting frame 43 is also connected to a circular arc end cover 45, and the circular arc end cover 44 is arranged above the connection between the dynamic riveting arm 411 and the push shaft 32 to protect the connection between the riveting arm 411 and the push shaft 32. However, the present invention does not make any limitation to this.

[0031] The riveting force of the hydraulically powered rivet-free riveting machine provided in this embodiment is much greater than that of the traditional pneumatic riveting machine. Therefore, the greater the riveting force applied by the dynamic riveting die 412 and the static riveting die 422 to the plate, the more difficult it is to separate them from the plate, and the plate is likely to adhere to the static riveting die 422 or the dynamic riveting die 412. To solve this problem, in this embodiment, the riveting assembly 4 is provided to also include a demolding assembly 44 provided on the static riveting component 42 and the dynamic riveting component 41, and the demolding assembly 44 separates the plate from the dynamic riveting die 412 and the static riveting die 422 after riveting is completed. However, the present invention does not impose any limitation on this. In other embodiments, the demolding assembly 44 may be provided only on the static riveting component; or it may be provided only on the dynamic riveting component. As Figure 4 and 5 As shown, the demoulding assembly 44 includes a lower demoulding member 441 connected to the dynamic riveting assembly 41 and located below the plate to be riveted, and an upper demoulding member 442 connected to the static riveting assembly 42 and located above the plate to be riveted.

[0032] In this embodiment, the upper demoulding member 442 includes an upper demoulding pressing plate 4421 and a pressing plate connecting arm 4422 connecting the upper demoulding pressing plate 4421 and the static riveting arm 421. The upper demoulding pressing plate 4421 has a through hole 4421a coaxial with the dynamic riveting die 412, and the diameter of the through hole is greater than the maximum diameter of the dynamic riveting die 412. The dynamic riveting die 412 is provided with a through hole 4421a to rivet the plate below the upper demoulding pressing plate 4421. The lower demoulding member 441 includes a pair of demoulding claws connected to both sides of the dynamic riveting arm 411, and the claw portion 4411 of the demoulding claw is located below the plate. After riveting is completed, following the retreat of the push shaft 32, the dynamic riveting arm 411 drives the demoulding claw to move upward, and the claw portion 4411 of the demoulding claw pries up the plate. However, the present invention does not limit the specific structure of the upper depilatory component and the lower demoulding component.

[0033] During riveting, the plate to be riveted is placed on the claws 4411 of the two demoulding claws. At this time, the plate is located above the static riveting die 422 and does not contact the static riveting die 422. Figure 6 When the oil enters the rodless chamber 31a of the oil cylinder from the first oil passage 221 in the direction shown, the push shaft 32 drives the movable riveting arm 411, the movable riveting die 412, the lower demolding member 441 and the plate to be riveted to move downward. When the plate contacts the static riveting die 422, it is placed on it, and the lower demolding member 441 continues to move downward with the push shaft 32. Afterwards, the movable riveting die 412 passes through the through hole 4421a on the upper demolding plate 4421 to contact the plate to be riveted and rivet it. After the riveting is completed, the oil is moved in accordance with Figure 7The direction shown is from the second oil passage 223 into the rod chamber 31b of the oil cylinder, the push shaft 32 retreats and resets under the action of the oil pressure, and the dynamic riveting arm 411, the dynamic riveting die 412 and the lower demoulding member 441 move upward following the push shaft 32. When the claw 4411 located below the riveted sheet contacts the sheet, the sheet on the static riveting die 422 is lifted; and the upper demoulding pressing plate 4421 located above the sheet presses down the sheet that rises following the claw 4411, and separates the sheet from the upper riveting die 412, thereby realizing automatic demoulding and demoulding is very convenient.

[0034] In summary, in the split-type rivetless riveting provided by the present invention, the oil inlet main pipe, the reversing valve assembly and the oil cylinder assembly realize the hydraulic drive of the riveting assembly. Compared with the traditional pneumatic drive method, the hydraulic drive method can provide a greater driving force at the same volume, thereby greatly improving the firmness of the rivetless riveting. The first oil circuit and the second oil circuit in the reversing valve connecting seat realize the oil circuit connection between the reversing valve and the oil cylinder, and the movement direction of the oil in the two oil circuits changes with the drive of the reversing valve. The change in the movement direction of the oil enables the push shaft in the oil cylinder to achieve reciprocating motion. There is no need to set any oil leakage trigger switch in the oil cylinder, which greatly simplifies the structure of the oil circuit, thereby further reducing the volume of the riveting machine and realizing the miniaturization of the riveting machine.

[0035] Furthermore, the dynamic riveting part is movably connected to the push shaft and the extension part on the dynamic riveting arm is also movably connected to the static riveting arm. This arrangement enables the end of the dynamic riveting arm to move in an arc under the action of the push shaft, and its movement direction is not coaxial with the movement direction of the push shaft. This arrangement greatly reduces the axial length of the riveting machine, thereby making its structure more compact. In addition, the riveting assembly also includes a demoulding component, which can separate the packaging material from the dynamic riveting die or the static riveting die after riveting, realizing automatic demoulding, which is more convenient to use.

[0036] Although the present invention has been disclosed as above by the preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection required by the claims.

Claims

1. A split type rivetless riveting machine, characterized in that: include: Oil inlet main pipe; The reversing valve assembly comprises a reversing valve and a reversing valve connecting seat, wherein the reversing valve is connected to the oil inlet main pipe, and the reversing valve connecting seat has a first oil circuit and a second oil circuit connected to the reversing valve; The oil cylinder assembly comprises an oil cylinder and a push shaft arranged in the oil cylinder, the push shaft divides the oil cylinder into a rod chamber and a rodless chamber, the rodless chamber wall of the oil cylinder has a first oil hole connected to a first oil circuit, and the rod chamber wall has a second oil hole connected to a second oil circuit; The riveting assembly includes a static riveting assembly and a dynamic riveting assembly, wherein the dynamic riveting assembly is connected to the end of the push shaft; the oil enters the rodless chamber of the oil cylinder through the first oil passage on the reversing valve seat and pushes the push shaft forward, and the push shaft drives the dynamic riveting assembly to move in the direction where the static riveting assembly is located to perform riveting; after the riveting is completed, the reversing valve switches direction, and the oil enters the rod chamber of the oil cylinder through the second oil passage on the reversing valve seat and pushes the push shaft to retreat and reset; Wherein, the dynamic riveting assembly includes a dynamic riveting arm and a dynamic riveting die, the dynamic riveting arm includes a main body and an extension portion extending along one side of the main body, the extension portion is rotatably connected to the static riveting assembly, and a rotation fulcrum is formed at the connection, one end of the main body is movably connected to the push shaft, and the other end is connected to the dynamic riveting die; under the action of the push shaft, the dynamic riveting die moves in an arc around the rotation fulcrum; the riveting assembly also includes a riveting frame connected to the oil cylinder, the static riveting assembly includes a static riveting arm and a static riveting die, and the static riveting arm is connected to the riveting frame; the riveting assembly also includes a demoulding assembly arranged on the static riveting assembly or the dynamic riveting assembly, and the demoulding assembly separates the plate from the dynamic riveting die or the static riveting die after riveting is completed; the The demoulding assembly includes a lower demoulding member connected to the dynamic riveting assembly and located below the sheet to be riveted, and an upper demoulding member connected to the static riveting assembly and located above the sheet to be riveted; the upper demoulding member includes an upper demoulding pressure plate and a pressure plate connecting arm connecting the upper demoulding pressure plate and the static riveting arm, the upper demoulding pressure plate has a through hole coaxial with the dynamic riveting die, the diameter of the through hole is larger than the maximum diameter of the dynamic riveting die, and the dynamic riveting die is penetrated by the through hole to rivet the sheet located below the upper demoulding pressure plate; the lower demoulding member includes a pair of demoulding claws connected to both sides of the dynamic riveting arm, the claws of the demoulding claws are located below the sheet, and after riveting is completed, the dynamic riveting arm drives the demoulding claws to move upward following the retreat of the push shaft, and the claws of the demoulding claws pry up the sheet.

2. The split type rivetless riveting machine according to claim 1, characterized in that: An inclined guide surface is provided on the outer side wall of the main body of the dynamic riveting arm at a side away from the dynamic riveting die.

3. The split type rivetless riveting machine according to claim 1, characterized in that: The split type rivet-free riveting machine also includes a handle which is sleeved on the outside of the oil inlet main pipe and connected to the reversing valve.

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