Riveting and oiling integrated device

Abstract

The invention discloses a riveting and oil injection integrated device which comprises a fixing frame and a control device which form a riveting machine, a riveting table is arranged in the middle of the fixing frame, a riveting head capable of moving up and down is arranged at the top of the fixing frame, an oil injection pipe is arranged on the riveting head, and the riveting and oil injection integrated device further comprises an oil supply mechanism. The oil supply mechanism comprises an oil storage tank, an outer oil conveying pipe and an inner oil conveying channel which are sequentially connected, an oil conveying pump is arranged in the oil storage tank, the inner oil conveying channel is arranged in the rivet joint, the oil injection pipe is a hollow pipe, and the end of the oil injection pipe is communicated with the inner oil conveying channel in the rivet joint. After the control device controls the riveting head to press downwards, the oil delivery pump is started and kept for 0.5-2 s, and oil injection is completed; a traditional riveting head is improved, through the oil injection pipeline additionally arranged in the riveting head and the oil injection pipe connected with the oil injection pipeline and capable of discharging oil, the device can inject oil to a riveting point while riveting is conducted, procedures and manpower are saved, and the production time is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, and in particular to a riveting and oiling integrated device. Background Art

[0002] Riveting machine (also known as riveting machine, rotary riveting machine, riveting machine, rolling riveting machine, etc.) is a new type of riveting equipment developed based on the principle of cold rolling. It refers to mechanical equipment that can rivet objects together with rivets. The equipment has a compact structure, stable performance, convenient and safe operation. The riveting machine mainly relies on rotation and pressure to complete the assembly. It is mainly used in occasions where rivets (hollow rivets, hollow rivets, solid rivets, etc.) are required. Common models include pneumatic, hydraulic and electric, single-head and double-head models.

[0003] In the production of automobile switch parts, a riveting machine is often used to rivet the metal springs on the switch. Taking the automobile steering wheel knob assembly or the knob-type gear adjustment switch as an example, the product involves a hollow cylindrical base 30, and two sets of arc-shaped arc springs 31 (such as Figure 1 As shown in the figure, in the production process, the annular metal spring 32 needs to be riveted to the end face of the base 30 first, and after riveting, grease needs to be applied to the two sets of springs 31 at the bottom of the base 30. The existing riveting equipment can only complete the riveting work, and then the workers manually apply oil (lubricating grease) into the structural parts. It is impossible to rivet the structural parts while injecting oil, resulting in low production efficiency. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an integrated riveting and oiling device to achieve simultaneous oiling of structural parts during the riveting process steps, so as to overcome the shortcomings of the prior art.

[0005] The objective of the present invention is achieved through the following technical solutions: A riveting and oiling integrated device comprises a fixing frame and a control device constituting a riveting machine, a riveting platform is arranged below the fixing frame, a cylinder or a hydraulic cylinder is fixedly connected to the top of the fixing frame, a riveting head is connected to the telescopic end of the cylinder or the hydraulic cylinder through a connecting base, the riveting head corresponds to the position of the riveted part placed on the riveting platform, an oiling pipe is arranged at the end of the riveting head, the end of the oiling pipe points to the oiling area of ​​the concave area of ​​the riveted part, and it also comprises an oil supply mechanism, the oil supply mechanism comprises an oil storage tank, an external oil pipeline and an internal oil delivery channel, the internal oil delivery channel is arranged inside the riveting head, the external oil pipeline connects the oil storage tank and the internal oil delivery channel, the upper end of the oiling pipe is connected to the internal oil delivery channel in the riveting head, and the control device controls the action of the cylinder or the hydraulic cylinder so that the riveting head is kept for 0.5-2s after being pressed down and the oiling pipe completes oil discharge.

[0006] The aforementioned integrated riveting and oiling device further comprises an oil pump connected to the oil storage tank, and an external oil pipe is connected to the oil pump.

[0007] The aforementioned integrated riveting and oiling device is that the control device also controls the oil delivery pump to start when the riveting head is pressed down and maintained, and to shut down when the riveting head is lifted.

[0008] The aforementioned riveting oil injection integrated device is that the riveting head is composed of a riveting cylinder and a piston, and the connecting base is connected to the upper end surface of the riveting cylinder, and the riveting cylinder is a hollow cylindrical cylinder with an opening at the lower end, and two threaded holes are provided on the cylinder wall of the riveting cylinder; the piston is a cylinder that can be inserted into and matched with the riveting cylinder, and two through oil passages are provided in the height direction of the cylinder of the piston, and the oil injection pipe is connected to the oil passage, and a push rod is connected to the lower end surface of the piston, and the lower end surface of the push rod is lower than the lower end surface of the oil injection pipe, and a return spring is provided between the upper end surface of the piston and the riveting oil cylinder, and the outlet of the inner oil delivery channel arranged on the riveting cylinder is located between the upper end surface of the piston and the riveting oil cylinder, and two inclined slide grooves are symmetrically provided on the cylindrical surface of the piston, and two limit rods are vertically inserted into the slide grooves through the threaded holes on the riveting cylinder, and a one-way valve is provided on the oil injection pipe and the external oil delivery pipe.

[0009] The aforementioned integrated riveting and oiling device is that a riveting protrusion is provided on the lower end ring surface of the riveting cylinder body.

[0010] The aforementioned integrated riveting and oil injection device is that a screw hole is opened on the lower end surface of the piston, and a thread matching the screw hole is provided on the push rod.

[0011] The aforementioned integrated riveting and oiling device is that positioning guide pillars connected to the connection base are arranged on both sides of the riveted head.

[0012] The beneficial effects of the present invention are: The present invention discloses an integrated riveting and oiling device, which improves the riveting head of an existing riveting machine, opens an oil delivery channel inside the riveting head and connects it to an oil storage tank through an oil delivery pipe. The device is controlled by a PLC program to discharge oil, and the oil is discharged to the riveting points of the processed structural parts through a hollow oiling pipe at the bottom, so that the structural parts are simultaneously oiled during the riveting process. Compared with the traditional manual oiling method, the oiling method is optimized and set into the riveting head, which effectively improves the work efficiency.

[0013] At the same time, two structures are proposed for the process of completing riveting and oiling at the same time. One is to set an oil pump, and the control device controls the oil cylinder or air cylinder to complete the riveting, and at the same time controls the oil pump to complete the oiling action. The second is to control the oiling action through a mechanical structure, which makes the riveted head into two parts, namely the riveting cylinder body and the piston that can cooperate with each other. The piston and the cylinder body adopt a pressing and rotating mechanism, and the oiling pipe is connected to the piston. In this way, the point oiling can be changed to arc surface oiling, so that the oiling effect is better optimized.

[0014] The present invention also has the following advantages: 1. The structure is simple. By improving the existing riveting head of the riveting machine, the device is automatically controlled by the PLC program to discharge oil. When working, the worker starts the riveting machine switch, presses the cylinder down to the right position, and sends a signal to the PLC. The PLC triggers the oil filling command, and the oil in the oil tank is transported to the oil filling pipeline through the oil delivery pipe. After the oil is filled into the structural parts through the oil filling pipeline and the oil filling pipe, the cylinder is lifted up to complete the riveting and oil filling at the same time; 2. Compared with the traditional riveting joint that needs to be manually oiled after riveting, the improved riveting joint can greatly reduce the workers' operation process and reduce manpower; 3. Easy replacement and maintenance. Through the detachable method and the internal insertion and assembly method, it can be easily repaired when the structural parts are damaged.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which: Figure 1 A top view of the product to be processed according to the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 is a schematic diagram of a riveted joint of the present invention; Figure 4 A half-section schematic diagram of a riveted joint in Example 2 of the present invention; Figure 5 This is a schematic structural diagram of only the riveting cylinder body in the riveted joint in Example 2 of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Fixing frame; 2. Riveted joint; 3. Connecting base; 4. Oil filling pipe; 5. Internal oil delivery channel; 6. Riveting table; 7. Positioning guide column; 8. Oil storage tank; 9. External oil delivery pipe; 10. One-way valve; 21. Riveted cylinder; 22. Piston; 23. Riveted protrusion; 24. Oil channel; 25 ejector rod; 26. Return spring; 27. Slide groove; 28. Limit rod. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0019] Embodiment 1, as Figure 2 and Figure 3 As shown, a riveting oil injection integrated device comprises a fixed frame 1 and a control device constituting a riveting machine, a riveting press table 6 is arranged in the middle of the fixed frame 1, a riveting head 2 capable of moving up and down is arranged on the top of the fixed frame 1, the riveting head 2 is connected to the fixed frame 1 through a connecting base 3, positioning guide pillars 7 connected to the connecting base 3 are arranged on both sides of the riveting head 2, an oil injection pipe 4 is arranged on the riveting head 2, and an oil supply mechanism for injecting oil into the riveting point of the workpiece is provided on the riveting head 2 by improving the riveting head 2 of the existing riveting machine, and the oil supply mechanism comprises a plurality of oil supply pipes 4 connected to the riveting head 2 of the existing riveting machine. The oil storage tank 8, the external oil pipeline 9 and the internal oil channel 5 are connected, an oil pump is arranged in the oil storage tank 8, the internal oil channel 5 is arranged inside the riveted head 2, the oil filling pipe 4 is a hollow metal pipe, one end of which extends into the riveted head 2 and is interconnected with the internal oil channel 5, the internal oil channel 5 inside the riveted head 2 is connected to the external oil pipeline 9, the oil supply mechanism is controlled by the PLC program to discharge oil, the control device controls the riveted head 2 to press down and then start the oil pump and maintain it for 0.5-2s to complete the oil filling, so that the riveted structural parts are completed with oil filling while the oil filling pipe 4 is riveted.

[0020] The usage process of this embodiment is as follows: Place the annular metal spring 32 on the riveting rod 33 on the hollow column base 30, and then place it on the riveting table 6 on the riveting press. After completing the preparation work, the worker starts the riveting machine switch during work, and the PLC controls the downward pressure cylinder to press down. After pressing down to the right position, it gives a signal to the PLC. The PLC triggers the oil injection command to start the oil pump. The downward pressure signal can be set by time, or by installing a pressure sensor or position sensor. After the oil pump is started, the oil in the oil storage tank 8 is transported through the external oil pipe 9 through the internal oil channel 5 to the oil injection pipe 4 to inject oil to one of the points on the arc spring 31. The start time of the oil pump is controlled by the PLC time. After the set time is reached, the oil pump is stopped and the cylinder is controlled to lift up to complete the riveting and oil injection process.

[0021] Embodiment 2, as Figure 1-Figure 5As shown, the riveting oil injection integrated device comprises a fixed frame 1 and a control device constituting a riveting machine, a riveting table 6 is arranged in the middle of the fixed frame 1, a riveting head 2 capable of moving up and down is arranged on the top of the fixed frame 1, the riveting head 2 is connected to the fixed frame 1 through a connecting base 3, positioning guide pillars 7 connected to the connecting base 3 are arranged on both sides of the riveting head 2, an oil injection pipe 4 is arranged on the riveting head 2, and the riveting head 2 of the existing riveting machine is improved, wherein the riveting head 2 comprises a riveting cylinder 21 and a piston 22, the connecting base 3 is connected to the upper end surface of the riveting cylinder 21, the riveting cylinder 21 is a hollow cylindrical cylinder with an opening at the lower end, a riveting protrusion 23 is arranged on the lower end annular surface of the riveting cylinder 22, and two threads are opened on the cylinder wall of the riveting cylinder 22 Hole; the piston 22 is a cylinder that can be inserted into and cooperate with the riveting cylinder body 21. Two through oil passages 24 are opened in the height direction of the cylinder of the piston 22. The oil filling pipe 4 is connected to the oil passage 24. A push rod 25 is connected to the lower end surface of the piston 22. The lower end surface of the push rod 25 is lower than the lower end surface of the oil filling pipe 4. A return spring 26 is provided between the upper end surface of the piston 22 and the riveting cylinder 21, and the outlet of the inner oil delivery channel 5 provided on the riveting cylinder body 22 is located between the upper end surface of the piston 22 and the riveting cylinder 21. Two inclined slide grooves 27 are symmetrically provided on the cylindrical surface of the piston 22. Two limit rods 28 are vertically inserted in the slide grooves 27 through the threaded holes on the riveting cylinder body 22. A one-way valve 10 is provided on the oil filling pipe 4 and the external oil delivery pipe 9.

[0022] With such a riveting head structure, a cavity is formed between the riveting cylinder 21 and the piston 22. The piston 22 moves downward during the resetting process of the reset spring 26, and can absorb oil from the oil storage tank 8 to complete the oil storage in the cavity. When the push rod 25 contacts the bottom of the riveted part, the piston 22 moves upward, and the compression of the cavity space can realize the oil discharge from the oil filling pipe 4. At the same time, it is limited by the limit rod 28 and the piston outer wall groove 27. The upward movement of the piston 22 will realize a certain angle of rotation, thereby changing the point oiling of Example 1 into linear oiling.

[0023] A screw hole is provided on the lower end surface of the piston 22, and a matching thread is provided on the push rod 25. Such a setting mechanism can adjust the compression amount of the cavity formed between the riveting cylinder 21 and the piston 22, so as to achieve a more accurate oil discharge amount.

[0024] The usage process of this embodiment is as follows: Place the annular metal spring piece 32 on the riveting rod 33 on the hollow column base 30, and then place it on the riveting table 6 on the riveting machine, push up the push rod 25 and then let go to complete the oil suction work of the cavity between the riveting cylinder body 21 and the piston 22. After completing the above preparations, the worker starts the riveting machine switch during work, and the PLC controls the downward pressure cylinder to press down. During the downward pressure process, the push rod 25 first contacts the bottom of the hollow column base 30, and then drives the piston 22 to move upward. The grease in the cavity is squeezed into the oil channel 24 and then discharged from the oil filling pipe 4. During the upward movement of the piston 22, the piston 22 is limited by the limiting rod 28 and the piston outer wall groove 27. The upward movement of the piston 22 will achieve a certain angle of rotation, thereby changing the point oiling of Example 1 to linear oiling.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A riveting and oiling integrated device, comprising a fixed frame (1) constituting a riveting machine and a control device, a riveting platform (6) being arranged below the fixed frame (1), a cylinder or a hydraulic cylinder being fixedly connected to the top of the fixed frame (1), a riveting head (2) being connected to the telescopic end of the cylinder or the hydraulic cylinder via a connecting base (3), the riveting head (2) corresponding to the position of the riveted piece placed on the riveting platform (6), characterized in that: An oil injection pipe (4) is provided at the end of the riveted joint (2), the end of the oil injection pipe (4) pointing to the area of ​​the riveted part that needs oil injection in the concave area, and the riveted part further comprises an oil supply mechanism, the oil supply mechanism comprising an oil storage tank (8), an external oil delivery pipe (9) and an internal oil delivery channel (5), the internal oil delivery channel (5) being arranged inside the riveted joint (2), the external oil delivery pipe (9) connecting the oil storage tank (8) and the internal oil delivery channel, the upper end of the oil injection pipe (4) being interconnected with the internal oil delivery channel (5) inside the riveted joint (2), and the control device controlling the movement of the air cylinder or the hydraulic cylinder so that the riveted joint (2) is held for 0.5-2 seconds after being pressed down and the oil injection pipe (4) is completed to discharge oil.

2. The riveting and oiling integrated device according to claim 1, characterized in that: It also includes an oil delivery pump connected to the oil storage tank (8), and an external oil delivery pipe (9) is connected to the oil delivery pump.

3. The riveting and oiling integrated device according to claim 2, characterized in that: The control device also controls the oil delivery pump to start when the riveted head (2) is pressed down and maintained, and to shut down when the riveted head (2) is lifted.

4. The riveting and oiling integrated device according to claim 1, characterized in that: The riveting head (2) comprises a riveting cylinder (21) and a piston (22). The connecting base (3) is connected to the upper end surface of the riveting cylinder (21). The riveting cylinder (21) is a hollow cylindrical cylinder with an open lower end. Two threaded holes are provided on the cylinder wall of the riveting cylinder (22). The piston (22) is a cylinder that can be inserted into and matched with the riveting cylinder (21). Two through oil passages (24) are provided in the height direction of the piston (22). The oil filling pipe (4) is connected to the oil passages (24). A push rod (25) is connected to the lower end surface of the piston (22). The lower end surface of the rod (25) is lower than the lower end surface of the oil filling pipe (4), a return spring (26) is provided between the upper end surface of the piston (22) and the riveting oil cylinder (21), and the outlet of the internal oil delivery channel (5) provided on the riveting cylinder body (22) is located between the upper end surface of the piston (22) and the riveting oil cylinder (21), two inclined slide grooves (27) are symmetrically provided on the cylindrical surface of the piston (22), two limit rods (28) are vertically inserted into the slide grooves (27) through threaded holes on the riveting cylinder body (22), and a one-way valve (10) is provided on the oil filling pipe (4) and the external oil delivery pipe (9).

5. The riveting and oiling integrated device according to claim 4, characterized in that: A riveting protrusion (23) is provided on the lower end annular surface of the riveting cylinder (22).

6. The riveting and oiling integrated device according to claim 5, characterized in that: A screw hole is provided on the lower end surface of the piston (22), and a thread matching the screw hole is provided on the push rod (25).

7. The riveting and oiling integrated device according to claim 6, characterized in that: Positioning guide pillars (7) connected to the connection base (3) are arranged on both sides of the riveted joint (2).

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