Lower die head changing device for squeeze riveter

Abstract

The utility model discloses a lower die head changing device for a squeeze riveter, which comprises a mounting plate, a bottom plate is arranged above the mounting plate, the bottom plate is fixedly connected with the mounting plate through two vertical plates, the middle part of the bottom plate is arranged in a penetrating manner, an annular plate is arranged above the bottom plate, and the annular plate is fixedly connected with the mounting plate. An adjusting mechanism used for adjusting the annular plate is arranged on the bottom plate, a rotating disc is arranged above the bottom plate, the lower end of the rotating disc is coaxially and fixedly connected with a rotating shaft, a servo motor used for driving the rotating shaft is fixedly installed at the lower end of the bottom plate, and a plurality of lower die heads are arranged on the rotating disc and the annular plate. A precise positioning hole matched with the lower die head is formed in the rotary disc, and a positioning supporting air cylinder used for supporting the lower die head is arranged on the bottom plate. When the lower die supporting structure is replaced, manpower and material resources are saved, and replacement is more intelligent, more efficient and more convenient.

Description

Technical Field

[0001] The utility model specifically relates to the field of riveting machines, in particular to a lower die head changing device for riveting machines. Background Art

[0002] The riveting machine 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. It solves the problem that some sheet metal parts cannot be directly placed on ordinary sloped cast steel machinery for riveting after bending. Riveting is a riveting method that uses the static pressure generated by the riveting machine to press the rivets into the sheet. The riveted parts have the characteristics of good surface quality, small deformation and high connection strength. Therefore, in actual operation, as long as the structural process allows, pressure riveting is preferred.

[0003] When the riveting machine is riveting different rivets, it is necessary to replace the rivet support head of the lower die support structure accordingly. The existing support structure has a single structure and needs to be manually disassembled and assembled when replaced, which takes a lot of time and increases labor costs. In addition, the installation position is prone to deviation, which makes it inconvenient to replace the support structure.

[0004] Therefore, we propose a lower die head changing device for a riveting machine to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that it takes a lot of time to replace the lower die support structure, increases labor costs, and is inconvenient to replace the support structure, and proposes a lower die head changing device for a riveting machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A lower die head changing device for a riveting machine comprises a mounting plate, a base plate is provided above the mounting plate, the base plate and the mounting plate are fixedly connected by two vertical plates, the middle part of the base plate is through-set, an annular plate is provided above the base plate, an adjusting mechanism for adjusting the annular plate is provided on the base plate, a turntable is provided above the base plate, a rotating shaft is coaxially fixedly connected to the lower end of the turntable, a servo motor for driving the rotating shaft is fixedly installed at the lower end of the base plate, a plurality of lower die heads are provided on the turntable and the annular plate, precise positioning holes matching the lower die heads are provided on the turntable, and a positioning support cylinder for supporting the lower die head is provided on the base plate.

[0008] Preferably, the adjustment mechanism comprises two lifting cylinders, the two lifting cylinders are fixedly connected to the two vertical plates respectively, and the upper ends of the two lifting cylinders are fixedly connected to the lower end of the annular plate.

[0009] Preferably, the positioning and supporting cylinder includes a supporting column at the upper end of the mounting plate. The upper end of the supporting column penetrates through the bottom plate. Openings matching the supporting column are provided on both the bottom plate and the annular plate. A cross plate is fixedly installed on the bottom plate, and a telescopic motor is fixedly connected to the cross plate. A driving shaft of the telescopic motor is fixedly connected with a T-shaped limiting plate. The lower end of the T-shaped limiting plate abuts against and tightly presses the supporting column. Two limiting rods are fixedly installed on the T-shaped limiting plate, and two limiting holes are provided on the side wall of the supporting column. The two limiting rods are inserted into the two limiting holes.

[0010] Preferably, the lower die head includes a tube body. A spring and an adjusting ring are sleeved outside the tube body. The lower end of the spring is fixedly connected to the upper end of the adjusting ring. The upper end of the spring abuts against the lower end of the turntable. A bottom plate is fixedly connected to the lower end of the tube body. The bottom plate abuts against the annular plate. The adjusting ring is threadedly connected to the tube body.

[0011] Preferably, the widths of the openings on the bottom plate and the annular plate match the widths of the supporting column and the T-shaped limiting plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By providing the lower die head, when replacing the lower die support structure, the two lifting cylinders are lifted and lowered synchronously. The lifting cylinders drive the annular plate to lift and lower until the upper end surface of the annular plate is flush with the upper end surface of the T-shaped limiting plate. At this time, the servo motor drives the rotating shaft to rotate, the rotating shaft drives the turntable to rotate, and the turntable drives a plurality of lower die heads to rotate until the appropriate lower die head is rotated to the T-shaped limiting plate. Then the lifting cylinders descend, driving the annular plate to descend, and the annular plate drives a plurality of lower die heads to descend. The position of the lower die head supported by the T-shaped limiting plate remains unchanged, and thus the replacement of the lower die support structure can be completed, saving manpower and material resources, making the replacement more intelligent and efficient, and being relatively convenient.

[0014] When the present utility model replaces the lower die support structure, it saves manpower and material resources, makes the replacement more intelligent and efficient, and is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a right-view three-dimensional structure diagram of a lower die head replacement device for a riveting machine proposed by the present utility model;

[0016] Figure 2 is a left-view three-dimensional structure diagram of a lower die head replacement device for a riveting machine proposed by the present utility model;

[0017] Figure 3 is a side structure diagram of a lower die head replacement device for a riveting machine proposed by the present utility model;

[0018] Figure 4The utility model is a structural stereogram of a lower die head in a lower die head changing device for a riveting machine.

[0019] In the figure: 1 mounting plate, 2 bottom plate, 3 vertical plate, 4 annular plate, 5 adjustment mechanism, 6 turntable, 7 rotating shaft, 8 servo motor, 9 lower die head, 10 precision positioning hole, 11 positioning support cylinder, 12 lifting cylinder, 13 support column, 14 horizontal plate, 15 telescopic motor, 16 earth-shaped limit plate, 17 limit rod, 18 tube body, 19 spring, 20 adjustment ring, 21 stop plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below 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, rather than all of the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0026] Reference Figure 1-4 A lower die head changing device for a riveting machine includes a mounting plate 1, a bottom plate 2 is provided above the mounting plate 1, the bottom plate 2 and the mounting plate 1 are fixedly connected by two vertical plates 3, the middle part of the bottom plate 2 is through-set, an annular plate 4 is provided above the bottom plate 2, and an adjusting mechanism 5 for adjusting the annular plate 4 is provided on the bottom plate 2. Specifically, the adjusting mechanism 5 includes two lifting cylinders 12, the two lifting cylinders 12 are fixedly connected to the two vertical plates 3 respectively, the upper ends of the two lifting cylinders 12 are fixedly connected to the lower end of the annular plate 4, and a turntable 6 is provided above the bottom plate 2.

[0027] In the utility model, the lower end of the turntable 6 is coaxially fixedly connected with the rotating shaft 7, the lower end of the base plate 2 is fixedly installed with a servo motor 8 for driving the rotating shaft 7, and a plurality of lower dies 9 are arranged on the turntable 6 and the annular plate 4. It should be noted that the lower die head 9 includes a tube body 18, and the outer sleeve of the tube body 18 is provided with a spring 19 and an adjusting ring 20, the lower end of the spring 19 is fixedly connected with the upper end of the adjusting ring 20, and the upper end of the spring 19 is in contact with the lower end of the turntable 6, the lower end of the tube body 18 is fixedly connected with a butt plate 21, the butt plate 21 is in contact with the annular plate 4, the adjusting ring 20 is threadedly connected to the tube body 18, and the turntable 6 is provided with a precision positioning hole 10 matching the lower die head 9.

[0028] In the present utility model, a positioning support cylinder 11 for supporting the lower die head 9 is provided on the bottom plate 2. It is worth mentioning that the positioning support cylinder 11 includes a support column 13 at the upper end of the mounting plate 1. The upper end of the support column 13 penetrates through the bottom plate 2. Openings matching the support column 13 are provided on both the bottom plate 2 and the annular plate 4. It should be noted that the widths of the openings on the bottom plate 2 and the annular plate 4 match the widths of the support column 13 and the T-shaped limiting plate 16. A cross plate 14 is fixedly installed on the bottom plate 2, and a telescopic motor 15 is fixedly connected to the cross plate 14. The drive shaft of the telescopic motor 15 is fixedly connected to a T-shaped limiting plate 16. The lower end of the T-shaped limiting plate 16 is in contact with and presses against the support column 13. Two limiting rods 17 are fixedly installed on the T-shaped limiting plate 16. Two limiting holes are provided on the side wall of the support column 13, and the two limiting rods 17 are inserted into the two limiting holes.

[0029] In the present utility model, when replacing the lower die support structure, the two lifting cylinders 12 are lifted and lowered synchronously. The lifting cylinders 12 drive the annular plate 4 to lift and lower until the upper end surface of the annular plate 4 is flush with the upper end surface of the T-shaped limiting plate 16. At this time, the servo motor 8 drives the rotating shaft 7 to rotate, the rotating shaft 7 drives the turntable 6 to rotate, and the turntable 6 drives the multiple lower die heads 9 to rotate until the appropriate lower die head 9 is rotated onto the T-shaped limiting plate 16. Then the lifting cylinders 12 descend, driving the annular plate 4 to descend. The annular plate 4 drives the multiple lower die heads 9 to descend, and the position of the lower die head 9 supported by the T-shaped limiting plate 16 remains unchanged, thus completing the replacement of the lower die support structure.

[0030] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present utility model.

Claims

1. A lower die head changing device for a riveting machine, characterized in that: The invention comprises a mounting plate (1), a bottom plate (2) is arranged above the mounting plate (1), the bottom plate (2) and the mounting plate (1) are fixedly connected via two vertical plates (3), the middle part of the bottom plate (2) is arranged through, an annular plate (4) is arranged above the bottom plate (2), an adjusting mechanism (5) for adjusting the annular plate (4) is arranged on the bottom plate (2), a turntable (6) is arranged above the bottom plate (2), a rotating shaft (7) is coaxially fixedly connected to the lower end of the turntable (6), a servo motor (8) for driving the rotating shaft (7) is fixedly installed on the lower end of the bottom plate (2), a plurality of lower dies (9) are arranged on the turntable (6) and the annular plate (4), a precise positioning hole (10) matching the lower dies (9) is arranged on the turntable (6), and a positioning support cylinder (11) for supporting the lower dies (9) is arranged on the bottom plate (2).

2. A lower die head changing device for a riveting machine as claimed in claim 1, characterized in that: The regulating mechanism (5) comprises two lifting cylinders (12), the two lifting cylinders (12) are respectively fixedly connected to the two vertical plates (3), and the upper ends of the two lifting cylinders (12) are fixedly connected to the lower end of the annular plate (4).

3. A lower die head changing device for a riveting machine according to claim 1, characterized in that: The positioning support cylinder (11) comprises a support column (13) connected to the upper end of the mounting plate (1); the upper end of the support column (13) is arranged to pass through the base plate (2); the base plate (2) and the annular plate (4) are both provided with openings matching the support column (13); a transverse plate (14) is fixedly mounted on the base plate (2); a telescopic motor (15) is fixedly connected to the transverse plate (14); a driving shaft of the telescopic motor (15) is fixedly connected to a Chinese-character TU-shaped limiting plate (16); the lower end of the Chinese-character TU-shaped limiting plate (16) is in contact with and tightly pressed against the support column (13); two limiting rods (17) are fixedly mounted on the Chinese-character TU-shaped limiting plate (16); two limiting holes are provided on the side wall of the support column (13); the two limiting rods (17) are inserted into the two limiting holes.

4. A lower die head changing device for a riveting machine as claimed in claim 1, characterized in that: The lower die head (9) comprises a tube body (18), the outer sleeve of which is provided with a spring (19) and an adjusting ring (20), the lower end of the spring (19) is fixedly connected to the upper end of the adjusting ring (20), the upper end of the spring (19) is in contact with the lower end of the rotating disk (6), the lower end of the tube body (18) is fixedly connected to a butt plate (21), the butt plate (21) is in contact with the annular plate (4), and the adjusting ring (20) is threadedly connected to the tube body (18).

5. A lower die head changing device for a riveting machine as claimed in claim 3, characterized in that: The width of the openings on the bottom plate (2) and the annular plate (4) matches the width of the support column (13) and the U-shaped limiting plate (16).

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