阅读说明：本技术 多点式旋铆机构 (Multi-point type rotary riveting mechanism ) 是由 杨建国 于 2020-06-12 设计创作，主要内容包括：本发明揭示了一种多点式旋铆机构,包括自上而下同轴设置的伺服压机、压头,以及用于固定待铆产品的固定座,所述压头设置于所述压机的压杆的底部并可随其同步相对于所述固定座上下移动,且所述压头与压杆之间连接有旋转机构,所述旋转机构驱动所述压头相对于所述压杆绕其轴线产生自转,并于旋转至特定角度后固定,所述压头的底部固设有一组面向于所述固定座的铆针。本发明结构简单精巧,通过设置旋转机构使得压头可旋转,可连贯进行两次铆接,优化了点铆流程,提高了点铆的工作效率。(The invention discloses a multi-point spin riveting mechanism which comprises a servo press, a pressure head and a fixed seat, wherein the servo press, the pressure head and the fixed seat are coaxially arranged from top to bottom, the fixed seat is used for fixing a product to be riveted, the pressure head is arranged at the bottom of a pressure rod of the press and can synchronously move up and down relative to the fixed seat along with the pressure head, a rotating mechanism is connected between the pressure head and the pressure rod, the rotating mechanism drives the pressure head to rotate around the axis of the pressure rod relative to the pressure rod and is fixed after the pressure head rotates to a specific angle, and a group of riveting needles facing the fixed seat are. The riveting device is simple and exquisite in structure, the pressing head can rotate through the rotating mechanism, two times of riveting can be performed continuously, the point riveting process is optimized, and the working efficiency of point riveting is improved.)

1. Multipoint spin riveting mechanism, including servo press (1), pressure head (2) of the coaxial setting of top-down to and be used for fixed fixing base (3) of waiting to rivet the product, its characterized in that: the pressing head (2) is arranged at the bottom of a pressing rod (101) of the pressing machine (1) and can move up and down relative to the fixing seat (3) along with the pressing head, a rotating mechanism (4) is connected between the pressing head (2) and the pressing rod (101), the rotating mechanism (4) drives the pressing head (2) to rotate around the axis of the pressing rod (101) and is fixed after rotating to a specific angle, and a group of riveting needles (201) facing the fixing seat (3) is fixedly arranged at the bottom of the pressing head (2).

2. The multi-point spin-riveting mechanism according to claim 1, characterized in that: the pressure head (2) and be provided with a detection mechanism (5) between fixing base (3), detection mechanism (5) can be relative fixing base (3) lateral shifting.

3. The multi-point spin-riveting mechanism according to claim 2, characterized in that: one side of the fixed seat (3) is provided with a driving cylinder (6), the detection mechanism (5) is arranged on the driving cylinder (6) in a sliding mode and driven by the driving cylinder, and the detection mechanism (5) can be driven by the driving cylinder (6) to be coaxially opposite to the pressure head (2).

4. The multi-point spin-riveting mechanism according to claim 3, characterized in that: detection mechanism (5) are including examining test table (501), examine test table (501) on be provided with a set of with rivet needle (201) position assorted pressure sensor (502), the top of pressure sensor (502) be provided with rivet needle (201) elastic component (503) that contact.

5. The multi-point spin-riveting mechanism according to claim 1, characterized in that: the pressure head (2) further comprises a central fixed shaft (203) and an outer shell (204), the outer shell (204) is rotatably arranged outside the central fixed shaft (203), a disc (205) is fixedly connected to the bottom of the outer shell (204), and the riveting needle (201) is fixedly arranged at the bottom of the disc (205).

6. The multi-point spin-riveting mechanism according to any one of claims 1-5, characterized in that: the bottom of depression bar (101) with the top of central fixed axle (203) rigid coupling respectively on a fixed plate (8), fixed plate (8) with depression bar (101), pressure head (2) are perpendicular, rotary mechanism (4) set up in on fixed plate (8), rotary mechanism (4) include roll connection's gear (401), rack (402) and first cylinder (403), gear (401) set firmly in on shell body (204) of pressure head (2), rack (402) through slide rail (404) slide set up in on fixed plate (8), first cylinder (403) with rack (402) are connected and are driven it relatively fixed plate (8) slide.

7. The multi-point spin-riveting mechanism according to claim 6, wherein: the two sides of the pressure lever (101) are provided with guide rods (7) parallel to the pressure lever, and the bottoms of the two guide rods (7) are fixedly connected to the fixed plate (8) and move up and down synchronously along with the fixed plate (8) in the guide sleeve (701).

8. The multi-point spin-riveting mechanism according to claim 7, characterized in that: an elastic column (202) is arranged at the center of the pressure head (2), a spring (2021) is arranged on the elastic column (202), and the bottom end of the elastic column is lower than that of the riveting needle (201).

9. The multi-point spin-riveting mechanism according to claim 1, characterized in that: the fixed seat (3) is provided with a floating plate (301) capable of floating up and down.

Technical Field

The invention relates to the technical field of water pump installation, in particular to a multi-point type spin riveting mechanism.

Background

The water pump is a machine for conveying liquid or pressurizing liquid, and it can transfer the mechanical energy of prime mover or other external energy to the liquid to increase the energy of liquid, and is mainly used for conveying liquid including water, oil, acid-base liquid, emulsion, suspoemulsion, liquid metal, etc., and can also convey liquid, gas mixture and liquid containing suspended solid matter. The technical parameters of the water pump performance include flow, suction lift, shaft power, water power, efficiency and the like; the pump can be divided into a volume water pump, a vane pump and the like according to different working principles. The displacement pump transfers energy by utilizing the change of the volume of a working chamber; vane pumps transfer energy by the interaction of rotating vanes with water and are available in the types of centrifugal pumps, axial flow pumps, mixed flow pumps, and the like.

And to the water pump at the in-process of installation, the protruding needs the main points of water pump inner wall to rivet, and current water pump inner wall needs the main points to rivet 6 points usually, and present general practice is once to adopt three riveting needle, and 3 points are riveted to a point, then rotatory 120 degrees rivets 3 points again. But traditional servo press is nonrotatable, and this makes traditional servo press's point rivet efficiency extremely low, can't satisfy daily production needs. In addition, the top of riveting the needle is thinner, breaks easily in the in-process of riveting the point, and the in-process of riveting the point can't learn, needs the check point in addition to rivet the effect, advances one and has increased the point and rivet the flow step, has reduced the point and has riveted machining efficiency. Therefore, how to accurately and efficiently carry out the spot riveting process is a problem which needs to be solved urgently in the installation process of the water pump at present.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a multi-point spin riveting mechanism.

The purpose of the invention is realized by the following technical scheme:

a multi-point spin riveting mechanism comprises a servo press, a pressure head and a fixing seat, wherein the servo press, the pressure head and the fixing seat are coaxially arranged from top to bottom, the fixing seat is used for fixing a product to be riveted, the pressure head is arranged at the bottom of a pressure rod of the press and can synchronously move up and down relative to the fixing seat along with the pressure head, a rotating mechanism is connected between the pressure head and the pressure rod, the rotating mechanism drives the pressure head to rotate around the axis of the pressure rod relative to the pressure rod and is fixed after the pressure head rotates to a specific angle, and a group of riveting needles facing the fixing seat are.

Preferably, a detection mechanism is arranged between the pressure head and the fixed seat, and the detection mechanism can transversely move relative to the fixed seat.

Preferably, a driving cylinder is arranged on one side of the fixed seat, the detection mechanism is slidably arranged on the driving cylinder and driven by the driving cylinder, and the detection mechanism can be driven by the driving cylinder to coaxially face the pressure head.

Preferably, the detection mechanism comprises a detection table, a group of pressure sensors matched with the riveting needles in position are arranged on the detection table, and elastic pieces in contact with the riveting needles are arranged at the tops of the pressure sensors.

Preferably, the pressure head further comprises a central fixed shaft and an outer shell, the outer shell is rotatably arranged outside the central fixed shaft, a disc is fixedly connected to the bottom of the outer shell, and the riveting needle is fixedly arranged at the bottom of the disc.

Preferably, the bottom of depression bar with the top of central fixed axle is rigid coupling respectively on a fixed plate, the fixed plate with depression bar, pressure head are perpendicular, rotary mechanism set up in on the fixed plate, rotary mechanism includes roll connection's gear, rack and first cylinder, the gear set firmly in on the shell body of pressure head, the rack pass through the slide rail slide set up in on the fixed plate, first cylinder with rack connection drives it relatively the fixed plate slides.

Preferably, guide rods parallel to the compression rod are arranged on two sides of the compression rod, and the bottoms of the two guide rods are fixedly connected to the fixed plate and move up and down synchronously in the guide sleeve along with the fixed plate.

Preferably, the center of the pressure head is provided with an elastic column, the elastic column is provided with a spring, and the bottom end of the elastic column is lower than the bottom end of the riveting needle.

Preferably, a floating plate capable of floating up and down is arranged on the fixed seat.

The invention has the following beneficial effects:

1. the structure is simple and exquisite, the pressing head can rotate by arranging the rotating mechanism, secondary riveting is continuously carried out, the point riveting flow is optimized, and the working efficiency of point riveting is improved;

2. the detection mechanism is arranged to detect the riveting needle before each point riveting, so that the riveting needle is determined to be riveted in a nondestructive state, the riveting failure caused by the breakage of the riveting needle is prevented, the point riveting success rate is improved, and the rejection rate is reduced;

3. the detection mechanism is provided with an elastic piece for transmitting pressure generated by the contact of the riveting needle with the pressure sensor, the elastic piece can play a role in cushioning, abrasion of the riveting needle can be reduced to the greatest extent, and influence on riveting is reduced;

4. the elastic column is arranged in the center of the pressing head, so that when the pressing head is pressed downwards, the guide column is firstly contacted with a workpiece to be machined and plays a role in cushioning, and damage caused by hard contact of the riveting needle and the workpiece to be machined is avoided;

5. the guide rod is arranged to ensure the stability and the fluency of the pressure head and the rotating mechanism in the up-and-down moving process;

6. the fixing seat can float up and down, so that the distance tolerance between the workpiece to be machined and the pressure head can be eliminated, and the adaptability of the fixing seat is improved.

Drawings

The technical scheme of the invention is further explained by combining the accompanying drawings as follows:

FIG. 1: a schematic diagram of an embodiment of the invention;

FIG. 2: a front view of an embodiment of the invention;

FIG. 3: a schematic view of a detection mechanism in an embodiment of the invention;

FIG. 4: schematic view of a rotation mechanism in an embodiment of the invention;

FIG. 5: a schematic view of another angular rotary mechanism in an embodiment of the invention;

FIG. 6: a partial schematic view of a ram in an embodiment of the invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art in light of these embodiments are intended to be within the scope of the present invention.

In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

As shown in fig. 1 to 6, the present invention discloses a multi-point spin riveting mechanism, which includes a servo press 1, a pressing head 2, and a fixing seat 3 for fixing a product to be riveted, the pressing head 2 is disposed at the bottom of a pressing rod 101 of the press 1 and can move up and down relative to the fixing seat 3 synchronously therewith, a rotating mechanism 4 is connected between the pressing head 2 and the pressing rod 101, the rotating mechanism 4 drives the pressing head 2 to rotate around the axis of the pressing rod 101 and is fixed after rotating to a specific angle, and a set of riveting pins 201 facing the fixing seat 3 is fixed at the bottom of the pressing head 2. In the preferred embodiment, three riveting needles 201 are disposed at the bottom of the pressing head 2, however, the number of the riveting needles 201 is not unique, and the positions thereof may have other arrangement manners, and in other embodiments, the number and the positions of the riveting needles 201 are set according to specific riveting positions.

As shown in fig. 1, 2 and 6, since the top end of the riveting needle 201 is sharp and easily broken and damaged during riveting, a detection mechanism 5 is disposed between the pressing head 2 and the fixing base 3, and the detection mechanism 5 can move laterally relative to the fixing base 3 in order not to hinder the pressing and riveting of the pressing head 2. Specifically, one side of the fixed seat 3 is provided with a driving cylinder 6, and the detection mechanism 5 is slidably arranged on the driving cylinder 6 and driven by the driving cylinder. In the preferred embodiment, the driving cylinder 6 drives the detecting mechanism 5 to move back and forth relative to the fixing base 3, and in other possible embodiments, the driving cylinder 6 may also drive the detecting mechanism 5 to move left and right. When the detecting mechanism 5 moves to the end of the driving cylinder 6, the detecting mechanism 5 is coaxially opposite to the pressing head 2, so that the pressing head 2 can contact with the detecting mechanism 5 to detect the rivet 201.

As shown in fig. 3, the detection mechanism 5 includes a detection platform 501, a set of pressure sensors 502 is disposed on the detection platform 501, the pressure sensors 502 are matched with the rivet 201 in position, an elastic member 503 is disposed on the top of the pressure sensors 502 and contacts with the rivet 201, in the preferred embodiment, the elastic member 503 generates an elastic force by a spring sleeved on the outer wall of the elastic member 503, and in other possible embodiments, the elastic member 503 may be made of other materials with elasticity. When the tip of the rivet 201 contacts the elastic member 503, the elastic member 503 transmits the pressure to the pressure sensor 502. The elastic piece 503 can play a cushioning role, so that the sharp end of the riveting needle 201 is prevented from being in hard contact with the pressure sensor 503, the abrasion of the riveting needle can be reduced to the greatest extent, and the influence of riveting the riveting needle is reduced. The detection mechanism is arranged, the riveting needle is detected before point riveting each time, the riveting needle is determined to be riveted under a nondestructive state, riveting failure caused by breakage of the riveting needle is prevented, the point riveting success rate is improved, and the rejection rate is reduced.

As shown in fig. 1 to 5, a rotation mechanism 4 is connected to the pressing head 2, and in the preferred embodiment, the rotation mechanism 4 can drive the pressing head 2 to rotate relative to the fixing base 3. In other possible embodiments, the rotating mechanism 4 may be connected to the fixing base 3 to drive the fixing base 3 to rotate relative to the pressing head 2.

Specifically, as shown in fig. 4 to 6, the pressing head 2 further includes a central fixing shaft 203 and an outer shell 204, the outer shell 204 is rotatably disposed outside the central fixing shaft 203, a disc 205 is fixedly connected to the bottom of the outer shell 204, and the riveting pin 201 is fixedly disposed at the bottom of the disc 205. In order to facilitate installation of the rotating mechanism 4, the bottom of the pressing rod 101 and the top of the central fixing shaft 203 are respectively and fixedly connected to a fixing plate 8, the fixing plate 8 is perpendicular to the pressing rod 101 and the pressure head 2, and the rotating mechanism 4 is arranged on the fixing plate 8.

In order to ensure the moving stability of the fixing plate 8 in the process of pressing down along with the pressing rod 101, guide rods 7 parallel to the pressing rod 101 are arranged on two sides of the pressing rod 101, and the bottoms of the two guide rods 7 are fixedly connected to the fixing plate 8 and move up and down synchronously along with the fixing plate 8 in the guide sleeve 701. In the preferred embodiment, the servo press 1 is disposed on a frame 9, and the guide sleeve 701 is fixedly disposed on the frame 9.

As shown in fig. 4 and 5, the rotating mechanism 4 includes a gear 401, a rack 402, and a first cylinder 403, which are connected in a rolling manner, the gear 401 is fixedly disposed on the outer shell 204 of the ram 2, the rack 402 is slidably disposed on the fixing plate 8 through a slide rail 404, and the first cylinder 403 is connected to the rack 402 and drives it to slide relative to the fixing plate 8. The working principle of the rotating mechanism 4 is as follows: in an initial state, the rack 401 is located at one end of the first cylinder 403, and one end of the rack 401 is meshed with the gear 401; in the second state, the first cylinder 403 drives the rack 401 to slide along the slide rail 404 relative to the fixed plate 8, and at this time, the gear 401 is rotated by the influence of the rack 402. In the preferred embodiment, the rack 402 moves two thirds of the circumference of the gear 401, so that the rotating mechanism 4 can drive the ram 2 to rotate 120 °. Of course, in other embodiments, the rotating mechanism 4 may drive the pressing head 2 to rotate to any angle and fix, and the rotation angle of the pressing head 2 is set according to the specific riveting requirement.

An elastic column 202 is arranged at the center of the pressure head 2, a spring 2021 is arranged on the elastic column 202, and the bottom end of the elastic column is lower than the bottom end of the riveting needle 201. When the pressing head 2 is pressed down by the arrangement of the elastic column 202, the guide column 202 firstly contacts with a workpiece to be machined and plays a role of cushioning to protect the riveting needle 201, so that the damage caused by the hard contact of the riveting needle 201 and the workpiece to be machined is avoided. Further, a shock absorbing washer (not shown) may be disposed on the contact surface of the guide column 202 and the workpiece to be processed, so as to further reduce the wear of the workpiece to be processed.

In the present invention, in order to eliminate the machining tolerance between the workpieces to be machined, the fixed seat 3 is provided with a floating plate 301 which can float up and down, and as shown in fig. 1, the bottom of the floating plate 301 is provided with an elastic rod which can deform up and down. In other possible embodiments, the floating plate 301 can also move up and down, left and right, and back and forth to further enhance the adaptability of the fixing base 3.

The working process of the invention is briefly described as follows:

firstly, a pressing rod 101 of the servo press 1 drives a pressing head 2 to press down, a detection mechanism 5 is coaxially opposite to the pressing head 2 at the moment, the pressing head 2 is driven by the pressing rod 101 to be in contact with the detection mechanism 5, and the detection mechanism 5 detects the integrity of a riveting needle 201 through an elastic piece 503 and a pressure sensor 502.

Secondly, after the detection is correct, the detection mechanism 5 is driven by the driving cylinder 6 to be away from the pressure head 2, and the pressure head 2 is driven by the pressure rod 101 to perform first pressing riveting.

Then, the pressing rod 101 drives the pressing head 2 to move upwards, at this time, the detection mechanism 5 is driven by the driving cylinder 6 to coaxially face the pressing head 2 again, and the integrity of the riveting needle 201 is detected again.

Then, after the detection is correct, the detection mechanism 5 is far away from the indenter 2, and the indenter 2 is rotated by 120 ° by the driving of the rotation mechanism 4.

And finally, after the pressure head 2 is rotated, performing second pressing riveting under the driving of the pressure rod 101.

The riveting device is simple and exquisite in structure, the pressing head 2 can rotate by arranging the rotating mechanism 4, two times of riveting can be performed continuously, the point riveting process is optimized, and the working efficiency of point riveting is improved.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.