Riveting mechanism with sliding groove

Abstract

The riveting mechanism comprises a riveting rod arranged on a rack in a sliding mode through a sleeve and a driving device driving the riveting rod to stretch out and draw back, an ejector rod connected between the driving device and the riveting rod is arranged in the sleeve in a sliding mode, and two parallel guide strips are arranged in the sleeve. The two guide strips are arranged in a spaced mode, and a guide key sliding between the two guide strips is arranged on the side face of the ejector rod. The riveting mechanism with the sliding groove is compact in structure, the two guide strips limit the moving direction of the guide key, and therefore the moving direction of the ejector rod is limited, it is guaranteed that the riveting rod moves in the axial direction of the riveting rod all the time, and the riveting precision is improved.

Description

Technical Field

[0001] The invention relates to the field of automated machinery, and in particular to a riveting mechanism with a slide groove. Background Art

[0002] A pressure riveting machine (also known as a riveting machine, a rotary riveting machine, a riveting machine, a rolling riveting machine, etc.) is a new type of riveting equipment developed based on the principle of cold rolling, which refers to mechanical equipment that can rivet objects together with rivets. Common processes are: pressure riveting and rivetless riveting. The current riveting mechanism mostly uses a drive device such as an electric cylinder or a hydraulic cylinder to directly drive the rivet rod. The rivet rod is slidably set in the sleeve through a push rod and is connected to the piston rod of the drive device. In order to ensure that the rivet rod always moves along its axial direction, a guide device needs to be set, so the wall thickness of the sleeve needs to be thicker, resulting in a larger overall deadweight. Summary of the invention

[0003] The object of the present invention is to provide a riveting mechanism with a slide groove to overcome the deficiencies in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An embodiment of the present invention discloses a riveting mechanism with a slide groove, comprising a rivet rod slidably arranged on a frame through a sleeve and a driving device for driving the rivet rod to extend and retract, a push rod connected between the driving device and the rivet rod is slidably arranged in the sleeve, two parallel guide bars are arranged in the sleeve, the two guide bars are spaced apart, and a guide key that slides between the two guide bars is arranged on the side wall of one end of the push rod away from the rivet rod.

[0006] Furthermore, in the above-mentioned riveting mechanism with a slide groove, a mounting groove is provided on the side wall of the sleeve, the length direction of the mounting groove is arranged along the axial direction of the sleeve, and the two guide strips are respectively fixed to the corresponding side walls of the mounting groove by a plurality of mounting bolts.

[0007] Furthermore, in the above-mentioned riveting mechanism with a sliding groove, the outer wall of the sleeve is provided with a sealing plate corresponding to the installation groove.

[0008] Furthermore, in the above-mentioned riveting mechanism with a sliding groove, the outer wall of the sleeve is provided with a plane corresponding to the mounting groove, and the sealing plate is attached to the plane.

[0009] Furthermore, in the above-mentioned riveting mechanism with a slide groove, a pre-stressing sleeve is slidably arranged in the sleeve, the push rod and the rivet rod slide through the pre-stressing sleeve, and a loading nozzle is connected to the end of the pre-stressing sleeve away from the driving device, and the loading nozzle is connected to the loading device.

[0010] Furthermore, in the above-mentioned riveting mechanism with a slide groove, the feeding device includes a double-row magazine assembly and a guide rail fixed to a C-shaped mounting frame through a mounting plate, and the end of the guide rail facing away from the double-row magazine assembly is connected to the feeding nozzle through a material pipe, and the double-row magazine assembly includes a magazine with two built-in material channels and a pushing device that slides respectively between the corresponding material channels and the guide rail.

[0011] Furthermore, in the above-mentioned riveting mechanism with a slide groove, the end of the material magazine facing away from the guide rail is connected to an external feeding device through a blowing device, and the blowing device includes a fixed block fixed to the end of the guide rail and a sliding block slidably connected to the fixed block, and the fixed block is provided with first material holes respectively connected to the material channel, and the sliding block is provided with second material holes and a first blowing hole respectively slidably connected to the corresponding first material holes.

[0012] Furthermore, in the above-mentioned riveting mechanism with a slide groove, exhaust holes respectively connected to the material channel are provided at one end of the guide rail close to the material magazine.

[0013] Furthermore, in the above-mentioned riveting mechanism with a slide groove, the pushing device includes a pushing cylinder and a pushing block connected to the piston cylinder of the pushing cylinder, and a material groove is arranged in the pushing block, and the material groove slides between the corresponding material channel and the guide track.

[0014] Furthermore, in the above-mentioned riveting mechanism with a slide groove, a second blowing hole connected to the guide track is provided in the magazine.

[0015] Compared with the prior art, the advantages of the present invention are: the riveting mechanism with a slide groove described in the present invention has a compact structure, and the guide strip is installed by slotting the sleeve, thereby reducing the wall thickness of the sleeve; in addition, the feeding device utilizes a double-row magazine assembly, which can be used for feeding two types of rivets, thereby reducing the number of riveting mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Shown is a schematic structural diagram of a riveting mechanism with a slide groove in a specific embodiment of the present invention.

[0018] Figure 2 Shown is an exploded schematic diagram of a sealing plate and a sleeve in a specific embodiment of the present invention.

[0019] Figure 3 Shown is a schematic diagram of the positions of the ejector rod and the guide strip in a specific embodiment of the present invention.

[0020] Figure 4 Shown is a schematic diagram of the positions of guide keys and guide strips in a specific embodiment of the present invention.

[0021] Figure 5 Shown is a schematic structural diagram of a feeding device in a specific embodiment of the present invention.

[0022] Figure 6 FIG. 1 is a schematic diagram of the structure of a sliding block in a specific embodiment of the present invention.

[0023] Figure 7 Shown is a schematic structural diagram of an upper fixing block in a specific embodiment of the present invention.

[0024] Figure 8 Shown is a schematic structural diagram of a double-row magazine assembly and a guide rail in a specific embodiment of the present invention.

[0025] Fig. 9 Shown is a schematic structural diagram of the second blowing hole in a specific embodiment of the present invention.

[0026] Fig.10 Shown is a schematic structural diagram of a guide track in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will describe the technical solutions in the embodiments of the present invention in detail in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Ginseng Figures 1 to 10 As shown, a riveting mechanism with a slide groove includes a rivet rod 2 slidably set on a frame through a sleeve 1 and a driving device 3 for driving the rivet rod 2 to extend and retract. A push rod 4 connected between the driving device 3 and the rivet rod 2 is slidably set in the sleeve 1. Two parallel guide strips 11 are set in the sleeve 1, and the two guide strips 11 are spaced apart. A guide key 41 that slides between the two guide strips 11 is set on the side wall of one end of the push rod 4 away from the rivet rod 2.

[0031] In this technical solution, the frame is a C-shaped mounting frame formed by splicing or processing plates, etc., and is connected with a connecting plate for connecting an external manipulator and other devices to install the riveting mechanism as a whole. A die facing the rivet rod is also provided in the frame. After the sleeve passes through the corresponding position of the frame, it is fixed to the frame through the limiting boss and nut on its outer wall. The driving device selects a conventional servo electric cylinder or hydraulic cylinder, etc. The push rod is a T-shaped shaft structure, and a keyway is processed on the side of the end close to the driving device. The guide key is fixed in the keyway by screws, etc., and protrudes from the circumferential surface of the push rod. One end of the push rod is connected to the piston rod of the driving device by a threaded connection, and the other end is connected to the rivet rod by a connecting head. The driving device drives the push rod to move along its axial direction, thereby driving the rivet rod to extend and retract relative to the die. During the activity of the push rod, the guide key sliding between the guide bars limits its moving direction and prevents the push rod from rotating, thereby improving the moving accuracy of the rivet rod, thereby improving the accuracy of riveting.

[0032] For example, see Figures 1 to 4 As shown, a mounting groove is provided on the side wall of the sleeve 1 , and the length direction of the mounting groove is arranged along the axial direction of the sleeve 1 . Two guide strips 11 are fixed to the corresponding side walls of the mounting groove by a plurality of mounting bolts 12 .

[0033] In this technical solution, the outer wall of the sleeve is provided with a plurality of countersunk holes which are respectively perpendicular to the side walls of the mounting groove, and the side surfaces of the guide strip are provided with threaded holes corresponding to the countersunk holes, and are fixed to the corresponding side walls of the mounting groove by mounting bolts. The degree of tightening of the mounting bolts can also be used to adjust the degree of fit between the guide strip and the corresponding side walls of the mounting groove, and fine-tune the parallelism of the two guide strips to improve the installation accuracy.

[0034] For example, see Figures 1 to 4As shown, the outer wall of the sleeve 1 is provided with a sealing plate 13 corresponding to the mounting groove.

[0035] In this technical solution, the sealing plate is installed on the outer wall of the sleeve by conventional screws, etc., to close the installation groove to prevent dust and the like from entering the sleeve. The installation bolts of the screws and the guide strips are staggered to avoid interference.

[0036] For example, see Figures 1 to 4 As shown, the outer wall of the sleeve 1 is provided with a plane corresponding to the mounting groove, and the sealing plate 13 is fitted on the plane.

[0037] In this technical solution, during processing, the plane of the outer wall of the sleeve is processed first to facilitate positioning during processing of installation grooves and countersunk holes, etc. At the same time, the plane can increase the fitting area between the outer wall of the sleeve and the sealing plate, and the two ends of the side of the sealing plate close to the plane are respectively provided with inclined surfaces tangent to the outer wall of the sleeve, thereby improving the fitting degree between the sealing plate and the sleeve.

[0038] For example, see Figures 1 to 4 As shown, a pre-stressing sleeve 5 is slidably arranged inside the sleeve 1, and the push rod 4 and the rivet rod 2 slide through the pre-stressing sleeve 5. The end of the pre-stressing sleeve 5 away from the driving device 3 is connected to a feeding nozzle, and the feeding nozzle is connected to the feeding device 6.

[0039] In this technical solution, the prestressing sleeve can directly utilize the existing structure, and the feeding nozzle is fixed to the corresponding end of the prestressing sleeve by bolts or the like. A spring (not shown) is arranged between the prestressing sleeve and the push rod. In order to improve the accuracy of the movement of the push rod, a guide sleeve corresponding to the prestressing sleeve is arranged in the sleeve, and a long waist groove is provided on the side wall of the prestressing sleeve. A key sliding in the long waist groove is provided on the side of the push rod. The feeding nozzle is a conventional structure and is used to push the rivet to the bottom of the rivet.

[0040] For example, see Figures 5 to 10 As shown, the loading device 6 includes a double-row magazine assembly and a guide rail 61 fixed to a C-shaped mounting frame through a mounting plate. The end of the guide rail 61 facing away from the double-row magazine assembly is connected to the loading nozzle 3 through a material pipe. The double-row magazine assembly includes a magazine 62 with two built-in material channels and a pushing device 63 that slides between the corresponding material channels and the guide rail 61 respectively.

[0041] In this technical solution, material channels for accommodating corresponding rivets are respectively processed in one side end face of the material magazine and the guide rail, and are encapsulated by a cover plate. The material tube is a conventional structure. Similar rivets of different models enter the two material channels of the material magazine respectively through external conventional vibrating plates and other feeding devices, and then the corresponding rivets are pushed to the guide rail by the corresponding pushing devices and enter the loading nozzle along the material tube. That is, the loading device can be used for loading two types of rivets to reduce the number of riveting mechanisms. The two material channels can be loaded alternately or separately to meet the production needs of riveting two different rivets in a single workpiece to be riveted. The alternating frequency is determined according to the actual riveting needs, or it can be used for the riveting needs of different rivets on different workpieces to be riveted. The single-side material channel can be loaded separately, and there is no need to set up different riveting mechanisms.

[0042] For example, see Figures 5 to 7 As shown, one end of the material magazine 62 away from the guide rail 61 is connected to the external feeding device through a blowing device, and the blowing device includes a fixed block 64 fixed to the end of the guide rail 61 and a sliding block 65 slidably connected to the fixed block 64, and the fixed block 64 is provided with first material holes respectively connected to the material channel, and the sliding block 65 is provided with second material holes and a first blowing hole 651 respectively slidably connected to the corresponding first material holes.

[0043] In this technical solution, the sliding block is pushed by a conventional cylinder (not shown) or connected to a material dividing mechanism of a feeding device, etc., so as to realize the reciprocating sliding of the sliding block. The sliding block is a T-shaped structure, and sliding grooves corresponding to the sliding block are arranged on both sides of the fixed block. During the reciprocating sliding of the sliding block, the second material hole and the first blowing hole are alternately connected to the first material hole. When the second material hole is connected to the first material hole, the external rivet enters the material channel of the material magazine through the second material hole and the first material hole respectively. When the first blowing hole is connected to the first material hole, the rivet in the material channel of the material magazine is blown to move to the side where the pushing device is located. The end faces of one side of the material magazine and the guide rail are respectively processed with material channels for accommodating the passage of the corresponding rivets, and are packaged by a cover plate. The material tube is a conventional structure, and similar rivets of different models are used. The rivets are respectively fed into the two material channels of the magazine through external conventional vibrating plates and other feeding devices, and then the corresponding rivets are pushed to the guide rails by the corresponding pushing devices and enter the feeding nozzle along the material pipe, that is, the feeding device can be used for feeding the two rivets to reduce the number of riveting mechanisms. The two material channels can be fed alternately or separately to meet the production needs of riveting two different rivets in a single workpiece to be riveted. The alternating frequency is determined according to the actual riveting needs, or it can be used for the riveting needs of different rivets for different workpieces to be riveted. The single-side material channel can be fed separately without the need to set up different riveting mechanisms. The first blowing hole includes a round hole connected to the air pipe joint and a waist-shaped blind hole corresponding to the first material hole. The compressed air connected to the first blowing hole blows toward the first material hole.

[0044] For example, see Fig.10As shown, one end of the guide track 61 close to the magazine 62 is provided with exhaust holes 611 respectively connected to the material channels.

[0045] In this technical solution, a positioning step is provided at one end of the magazine close to the guide rail, and the corresponding end of the guide rail is fixed to the positioning step by conventional bolts, etc. The exhaust hole of the guide rail is connected to the material channel of the magazine, and cooperates with the first blowing hole to form a channel for compressed air circulation. During the flow of compressed air, the rivet in the material channel of the magazine is pushed to move.

[0046] For example, see Figure 5 and Figure 8 As shown, the pushing device 63 includes a pushing cylinder 631 and a pushing block 632 connected to the piston cylinder of the pushing cylinder 631 . A material trough is provided in the pushing block 632 , and the material trough slides between the corresponding material channel and the guide track 61 .

[0047] The cam is provided with a plurality of holes for accommodating the reciprocating movement of the push block, and the push cylinder drives the push block to reciprocate, and the material trough reciprocates between the material channel and the guide track corresponding to the material magazine to transfer the rivet in the material magazine to the guide track. When the piston rods of the two push cylinders are in a retracted state, the material troughs of the two push blocks are respectively aligned with the material channels corresponding to the material magazine, and the two push blocks are arranged at intervals to avoid the position of the material channel in the guide track, and then the piston rods of the push cylinders are alternately extended and retracted to push the rivets in the material magazine to the guide track alternately. In order to limit the moving direction of the push block, limit pins are arranged at the ends of the material magazine and the guide track, and a long waist hole corresponding to the limit pin is arranged in the push block. The material magazine is fixed to the mounting plate at intervals by support columns and bolts. An induction through hole is arranged at the end of the material trough away from its opening, and a corresponding shooting sensor is arranged on both sides of the material magazine to sense whether the rivet enters the material trough.

[0048] For example, see Figure 8 and Fig. 9 As shown, a second blowing hole 621 connected to the guide track 61 is provided in the magazine 62 .

[0049] In this technical solution, the second blowing hole includes a connecting hole connected to an external air pipe joint and a waist-shaped blind hole connecting the connecting hole and the material channel of the guide track. Compressed air is used to blow the rivets in the guide track through the material pipe to the loading nozzle to realize automatic loading of the rivets.

[0050] In summary, the riveting mechanism with a slide groove described in the present invention has a compact structure, and the guide strip is installed by slotting the sleeve to reduce the wall thickness of the sleeve; in addition, the feeding device utilizes a double-row magazine assembly, which can be used for feeding two types of rivets, thereby reducing the number of riveting mechanisms.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] The above description is only a specific implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A riveting mechanism with a slide groove, characterized in that: It comprises a rivet rod slidably arranged on a frame through a sleeve and a driving device for driving the rivet rod to extend and retract, a push rod connected between the driving device and the rivet rod is slidably arranged in the sleeve, two parallel guide bars are arranged in the sleeve, the two guide bars are arranged at an interval, and a guide key sliding between the two guide bars is arranged on the side wall of one end of the push rod away from the rivet rod.

2. The riveting mechanism with a slide groove according to claim 1, characterized in that: The side wall of the sleeve is provided with a mounting groove, the length direction of the mounting groove is arranged along the axial direction of the sleeve, and the two guide strips are respectively fixed to the corresponding side walls of the mounting groove by a plurality of mounting bolts.

3. The riveting mechanism with a slide groove according to claim 2, characterized in that: The outer wall of the sleeve is provided with a sealing plate corresponding to the mounting groove.

4. The riveting mechanism with a slide groove according to claim 2, characterized in that: The outer wall of the sleeve is provided with a plane corresponding to the mounting groove, and the sealing plate is attached to the plane.

5. The riveting mechanism with a slide groove according to claim 1, characterized in that: A pre-stressing sleeve is slidably arranged in the sleeve, the push rod and the rivet rod slide through the pre-stressing sleeve, and a feeding nozzle is connected to the end of the pre-stressing sleeve away from the driving device, and the feeding nozzle is connected to the feeding device.

6. The riveting mechanism with a slide groove according to claim 5, characterized in that: The feeding device includes a double-row magazine assembly and a guide rail fixed to a C-shaped mounting frame via a mounting plate. The end of the guide rail facing away from the double-row magazine assembly is connected to the feeding nozzle via a material pipe. The double-row magazine assembly includes a magazine with two built-in material channels and a pushing device that slides respectively between the corresponding material channels and the guide rail.

7. The riveting mechanism with a slide groove according to claim 6, characterized in that: The end of the material magazine facing away from the guide track is connected to the external feeding device through a blowing device, and the blowing device includes a fixed block fixed to the end of the guide track and a sliding block slidably connected to the fixed block, and the fixed block is provided with first material holes respectively connected to the material channel, and the sliding block is provided with second material holes and a first blowing hole respectively slidably connected to the corresponding first material holes.

8. The riveting mechanism with a slide groove according to claim 7, characterized in that: One end of the guide track close to the magazine is provided with exhaust holes respectively connected to the material channels.

9. The riveting mechanism with a slide groove according to claim 6, characterized in that: The pushing device comprises a pushing cylinder and a pushing block connected to the piston of the pushing cylinder. A material trough is arranged in the pushing block, and the material trough slides between the corresponding material channel and the guide track.

10. The riveting mechanism with a slide groove according to claim 6, characterized in that: A second blowing hole connected to the guide track is arranged in the magazine.

Images