CN111390097A

CN111390097A - Follow-on hydraulic pressure riveter

Info

Publication number: CN111390097A
Application number: CN202010297747.3A
Authority: CN
Inventors: 李振宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-07-10

Abstract

The invention discloses an improved hydraulic riveting machine which comprises a rack, wherein two ends of the rack are respectively provided with a cylinder body and a bracket, and a rivet seat is arranged on the bracket; a piston and a composite piston rod which are matched with the cylinder body are arranged in the cylinder body, and the piston is connected with the inner wall of the lower end of the cylinder body through a return spring; the composite piston rod comprises a piston rod and a piston rod outer sleeve sleeved on the periphery of the piston rod in a sliding mode, axial limiting is carried out between the piston rod and the piston rod outer sleeve through a cylindrical pin, the upper end of the piston rod is fixed on the piston, the lower end of the piston rod is connected with the end of the piston rod through a connecting spring, and the upper end of the piston rod outer sleeve is connected with the piston through a fast forward spring. According to the invention, through arranging the composite piston rod, the perforation and the riveting can be completed in one-time hydraulic feeding without displacement adjustment, so that the riveting procedure is greatly simplified, and the riveting efficiency is improved.

Description

Follow-on hydraulic pressure riveter

Technical Field

The invention relates to the field of hydraulic machinery, in particular to an improved hydraulic riveting machine.

Background

The riveting machine is a device for replacing manpower to perform riveting operation, the working flow of the traditional riveting machine is shown as the attached drawing 1, the working flow comprises five procedures of inserting a rivet, aligning, perforating, shifting and riveting, wherein the riveting of one rivet needs a hydraulic rod to complete two telescopic actions, namely the first time: aligning a center hole at the fixed end of the riveting pliers with a rivet head, then operating a hydraulic switch to push out a hydraulic rod, enabling the rivet head to penetrate through an iron sheet, and then operating the switch to enable the hydraulic rod to return; and (3) for the second time: and (4) avoiding the center hole at the fixed end of the riveting pliers from the rivet head, and repeating the action of the first hydraulic rod to complete riveting of the rivet. These two disadvantages severely affect the riveting speed.

Disclosure of Invention

The invention aims to provide an improved hydraulic riveter to solve the problems.

In order to achieve the purpose, the invention provides the following technical scheme:

an improved hydraulic riveter comprises a frame, wherein a cylinder body and a bracket are respectively arranged at two ends of the frame, and a rivet seat is arranged on the bracket; a piston and a composite piston rod which are matched with the cylinder body are arranged in the cylinder body, and the piston is connected with the inner wall of the lower end of the cylinder body through a return spring; the composite piston rod comprises a piston rod and a piston rod outer sleeve sleeved on the periphery of the piston rod in a sliding mode, axial limiting is carried out between the piston rod and the piston rod outer sleeve through a cylindrical pin, the upper end of the piston rod is fixed on the piston, the lower end of the piston rod is connected with a piston rod end through a connecting spring, the upper end of the piston rod outer sleeve is connected with the piston through a fast forward spring, and the lower end of the piston rod outer sleeve is sleeved on the periphery.

In a further aspect: the cylinder body is formed by combining two shells, and the two shells are detachably connected.

In a further aspect: the rivet box used for filling rivets is arranged on the position, corresponding to the rivet seat, of the machine frame, a rivet push plate used for pushing rivets is arranged on one side, away from the rivet seat, of the rivet box, a protective cover covers the periphery of the rivet push plate, and the protective cover is fixed on the machine frame.

In a further aspect: the rivet push plate is connected with the rivet box through a thrust spring.

In a further aspect: the lower end of the end head of the piston rod is also provided with a knife edge.

In a further aspect: the support seat is of a hollow structure, the rivet seat is inserted into the support seat in a sliding mode and is connected with the bottom of the cavity of the support seat through the extrusion spring, the limiting block is fixed on the upper end face of the support seat, the ejector rod used for supporting the rivet is fixed at the center of the bottom of the cavity of the support seat, the ejector rod and the piston rod are arranged coaxially, and when the extrusion spring is not extruded, the upper end face of the rivet is located below the rivet seat.

In a further aspect: the upper end face of the ejector rod is matched with the lower end face of the rivet.

In a further aspect: and the rivet seat is also provided with a guide mechanism.

In a further aspect: the guiding mechanism comprises rotating blocks symmetrically arranged on two sides of the center of the rivet seat, one side of each rotating block, facing the center of the rivet seat, is an arc surface and is attached to the rivet, and one side, far away from the center of the rivet seat, of each rotating block is rotatably connected to the rivet seat.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the composite piston rod is arranged, so that the perforation and the riveting can be completed in one-time hydraulic feeding without displacement adjustment, the riveting procedure is greatly simplified, and the riveting efficiency is improved; through setting up bracket, rivet seat, rivet push pedal, rivet casket and safety cover, can high-efficiently accomplish the material loading work of rivet, and cooperation guiding mechanism's use can guarantee the axiality of rivet and compound piston rod to improve riveting quality.

Drawings

Fig. 1 is a working process of a riveting machine in the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural view of the guide mechanism of the present invention.

Notations for reference numerals: 1-cylinder body, 2-piston, 3-piston rod, 4-piston rod jacket, 5-fast forward spring, 6-reset spring, 7-piston rod end, 8-connecting spring, 9-bracket, 10-rivet seat, 11-extrusion spring, 12-ejector rod, 13-rivet push plate, 14-rivet box, 15-protective cover, 16-frame, 17-rotating block, 18-limiting plate and 19-propelling spring.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.

Example 1

Referring to fig. 2 to 3, in an embodiment of the present invention, an improved hydraulic riveter includes a frame 16, a cylinder 1 and a bracket 9 are respectively installed at two ends of the frame 16, and a rivet seat 10 is disposed on the bracket 9; the piston 2 and the composite piston rod are arranged in the cylinder body 1 and matched with the cylinder body, wherein the piston 2 is connected with the inner wall of the lower end of the cylinder body 1 through the return spring 6, when the piston is operated, hydraulic oil enters the cylinder body 1 to push the piston 2 to move downwards, and the return spring 6 is compressed to realize the return of the piston 2 in the follow-up process.

The composite piston rod comprises a piston rod 3 and a piston rod outer sleeve 4 sleeved on the periphery of the piston rod 3 in a sliding manner, the piston rod 3 and the piston rod outer sleeve 4 are axially limited through a cylindrical pin so as to prevent the piston rod outer sleeve 4 from being disengaged from the piston rod 3, the upper end of the piston rod 3 is fixed on the piston 2, the lower end of the piston rod 3 is connected with a piston rod end head 7 through a connecting spring 8, the connecting spring 8 is arranged so that the piston rod end head 7 can keep an extending state, the upper end of the piston rod outer sleeve 4 is connected with the piston 2 through a fast forward spring 5, the lower end of the piston rod outer sleeve is sleeved on the periphery of the piston rod end head 7, when the composite piston rod is used, rivets are sent into the rivet seat 10, the control rack 16 is aligned, the piston rod end head 7 extends into a hole which is pre-opened on the, thereby driving the compound piston rod to move downwards, after the rivet head is jointed with the iron sheet, because the shearing force required by the rivet head to penetrate the iron sheet is larger, before the iron sheet penetrates, the fast-forward spring 5 is compressed along with the continuous downward movement of the piston 2, the fast-forward spring 5 adopts a high-rigidity spring, when the compression force of the fast-forward spring 5 is larger than the shearing force required by the iron sheet or the fast-forward spring 5 is compressed to the limit, the iron sheet is penetrated, after the iron sheet is penetrated, the fast-forward spring 5 drives the piston rod jacket 4 to move downwards rapidly under the action of the reset elastic force, and the piston rod end 7 moves upwards relative to the piston rod jacket 4, so that the end part of the rivet can be tightly stuck with the iron sheet, then the piston 2 drives the piston rod 3 to move downwards continuously, and applies the thrust to the end surface of the rivet after the rear end, so far, accomplish the riveting action, whole riveting process reset piston rod only need descend once can, and need not to shift the operation, improved riveting efficiency greatly.

Further, the cylinder body 1 is formed by combining two shells, and the two shells are detachably connected, so that the maintenance requirement can be met.

In order to further improve the overall functionality, in this embodiment, a rivet box 14 for filling rivets is disposed at a position of the frame 16 corresponding to the rivet seat 10, a rivet pushing plate 13 for pushing rivets is disposed at a side of the rivet box 14 away from the rivet seat 10, a protective cover 15 covers a periphery of the rivet pushing plate 13, and the protective cover 15 is fixed on the frame 16, so that when in use, the rivets in the rivet box 14 can be pushed by the rivet pushing plate 13, and loading of the rivets is completed.

Further, the rivet pushing plate 13 is connected with the rivet box 14 through the thrust spring 19, so that the automatic pushing of the rivet can be completed by using elasticity, and the operation is more convenient.

The lower end of the end head 7 of the piston rod is also provided with a knife edge, and waste materials generated after the iron sheet is broken can be cut off.

The support seat 9 is of a hollow structure, the rivet seat 10 is inserted into the support seat 9 in a sliding mode and is connected with the cavity bottom of the support seat 9 through the extrusion spring 11, the limiting block 18 is fixed on the upper end face of the support seat 9, the rivet seat 10 is prevented from being separated from the support seat 9, the ejector rod 12 used for supporting a rivet is fixed in the center of the cavity bottom of the support seat 9, the ejector rod 12 and the piston rod 3 are arranged coaxially, when the extrusion spring 11 is not extruded, the upper end face of the rivet is located below the rivet seat 10, namely, at the moment, the rivet is hidden in the rivet seat 10, therefore, mistaken collision is avoided, the coaxiality of the rivet and the composite piston rod is guaranteed, in the process that the piston 2 continuously moves downwards, the lower surface of an iron sheet can be in contact with the upper surface of the rivet seat 10, the rivet seat 10 moves downwards, and.

Further, the upper end surface of the stem rod 12 is fitted to the lower end surface of the rivet, so that a reliable supporting force can be provided.

In order to ensure that the rivet does not deviate in the exposure process, in this embodiment, a guiding mechanism is further installed on the rivet seat 10, so that the rivet can be guided in the exposure process, and the deviation of the rivet is avoided.

Particularly, guiding mechanism includes that the symmetry lays in the turning block 17 of rivet seat 10 center both sides, and turning block 17 is the cambered surface and laminates with the rivet towards one side at rivet seat 10 center, and turning block 17 is kept away from one side rotation connection at rivet seat 10 center on rivet seat 10, and like this at the exposed in-process of rivet, turning block 17 can be followed and is rotated to guarantee that the rivet is in the central point of rivet seat 10 all the time and put, and then guarantee the axiality.

In conclusion, in the embodiment, the compound piston rod is arranged, so that the perforation and the riveting can be completed in one-time hydraulic feeding without displacement adjustment, the riveting procedure is greatly simplified, and the riveting efficiency is improved; through setting up bracket 9, rivet seat 10, rivet push pedal 13, rivet casket 14 and safety cover 15, can high-efficiently accomplish the material loading work of rivet, and the use of cooperation guiding mechanism can guarantee the axiality of rivet and compound piston rod to improve riveting quality.

Example 2

The embodiment of the invention will be described with reference to embodiment 1, and specifically includes the following steps:

1) rivet installation

The rivets are arranged in the rivet box 14, the number of the rivets which fill the rivet box 14 is 42, the rivet push plate 13 sends the rivets into the rivet seat 10 through elastic force, the foremost rivets are right above the ejector rod 12, the rivets with square end parts are adopted in the embodiment, and correspondingly, the upper end surface of the ejector rod 12 is also square.

2) Alignment of

And (3) a rack 16 is held by a hand, the lower part of the end head 7 of the piston rod is inserted into a hole which is punched in advance by the angle iron, the piston rod 3 is basically vertical to the end surface of the hole of the angle iron, so that the rivet can be aligned with the hole on the angle iron, and the end surface of the outer sleeve 4 of the piston rod can be tightly attached to the plane of the angle iron after alignment because the thrust of a connecting spring 8 at the rear end of the end head 7 of the piston rod.

3) Piercing and riveting

Operating the hydraulic switch, hydraulic oil promotes the piston and makes piston rod 3 stretch out simultaneously with piston rod overcoat 4, and the motion of stretching out of piston rod 3 and overcoat 4 can cause a plurality of chain actions, for convenient narration and understanding, decomposes the chain action into:

3-1) the end surface of the rivet seat 10 is close to the iron sheet below the angle iron. Because the end surface of the piston rod outer sleeve 4 is tightly attached to the upper plane of the angle iron after the step 2), the rivet seat 10 is close to the iron sheet below the angle iron until the rivet seat is tightly attached to the surface of the iron sheet along with the extending action of the piston rod 3.

3-2) pushing out the rivet. After the end face of the rivet seat 10 is tightly attached to the iron sheet, as the piston rod 3 continues to extend, the extrusion spring 11 is compressed, so that the ejector rod 12 and the rivet move upwards relative to the rivet seat 10 until the rivet head contacts the surface of the iron sheet.

3-3) perforating the rivet. The piston rod 3 continues to stretch out after the rivet head is attached to the iron sheet, the shearing force required by the rivet head to penetrate through the iron sheet is large, before the iron sheet penetrates through, the piston rod 3 continues to stretch out to enable the fast-forward spring 5 to be compressed, and when the compression force of the fast-forward spring 5 is larger than the penetration force of the iron sheet or the compression of the large-rigidity spring reaches the limit, the iron sheet penetrates through the rivet, and rivet punching is completed.

And 3-4) tightly attaching the rivet heads. The force of the upward movement of the rivet after the iron sheet is punched is much smaller than the shearing force during punching, the compressed fast forward spring 5 rapidly extends at the moment, the piston rod outer sleeve 5 rapidly moves downwards, and meanwhile, the end 7 of the piston rod relatively retreats, so that the end part of the rivet can be attached to the iron sheet.

3-5) riveting. After the rivet is punched and the rivet head is attached to the iron sheet, the piston rod 3 continues to extend out, thrust is applied to the end face of the rivet after the piston rod end 7 is contacted, the rivet generates plastic deformation, the diameter is thickened until the hydraulic thrust reaches a set value, and the riveting action is completed.

4) Removing waste material

The waste material is an iron sheet wafer cut out when the rivet perforates the iron sheet, the wafer is cut into two parts by utilizing a knife edge of a piston rod end 7, and the wafer automatically falls off after a hydraulic clamp is removed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An improved hydraulic riveter comprises a frame (16), wherein a cylinder body (1) and a bracket (9) are respectively arranged at two ends of the frame (16), and a rivet seat (10) is arranged on the bracket (9); a piston (2) and a composite piston rod which are matched with the cylinder body (1) are arranged in the cylinder body (1), and the piston (2) is connected with the inner wall of the lower end of the cylinder body (1) through a return spring (6); the composite piston rod is characterized by comprising a piston rod (3) and a piston rod outer sleeve (4) which is sleeved on the periphery of the piston rod (3) in a sliding mode, axial limiting is carried out between the piston rod (3) and the piston rod outer sleeve (4) through a cylindrical pin, the upper end of the piston rod (3) is fixed on the piston (2), the lower end of the piston rod (3) is connected with a piston rod end (7) through a connecting spring (8), the upper end of the piston rod outer sleeve (4) is connected with the piston (2) through a fast forward spring (5), and the lower end of the piston rod outer sleeve is sleeved on the periphery.

2. The improved hydraulic riveter according to claim 1, characterized in that the position of the frame (16) corresponding to the rivet seat (10) is provided with a rivet box (14) for filling rivets, one side of the rivet box (14) far away from the rivet seat (10) is provided with a rivet pushing plate (13) for pushing rivets, the periphery of the rivet pushing plate (13) is covered with a protective cover (15), and the protective cover (15) is fixed on the frame (16).

3. Improved hydraulic riveter according to claim 2, characterised in that the rivet pusher (13) is connected to the rivet magazine (14) by means of a thrust spring (19).

4. Improved hydraulic riveter according to claim 1, characterised in that the lower end of the piston rod end (7) is also provided with a knife edge.

5. The improved hydraulic riveter according to claim 1, characterized in that the bracket (9) is a hollow structure, the rivet seat (10) is inserted into the bracket (9) in a sliding manner and is connected with the bottom of the cavity of the bracket (9) through the extrusion spring (11), a limiting block (18) is fixed on the upper end surface of the bracket (9), a mandril (12) for supporting the rivet is fixed at the center of the bottom of the cavity of the bracket (9), the mandril (12) and the piston rod (3) are arranged coaxially, and when the extrusion spring (11) is not extruded, the upper end surface of the rivet is located below the rivet seat (10).

6. Improved hydraulic riveter according to claim 5, characterised in that a guiding mechanism is also mounted on the rivet seat (10).

7. The improved hydraulic riveter according to claim 6, characterized in that the guiding mechanism includes turning blocks (17) symmetrically arranged at two sides of the center of the rivet seat (10), one side of the turning block (17) facing the center of the rivet seat (10) is a cambered surface and is attached to the rivet, and one side of the turning block (17) far away from the center of the rivet seat (10) is rotatably connected to the rivet seat (10).