Riveting die head device for filter cover plate and riveting machine

Abstract

The utility model relates to a riveting die head device for a filter cover plate and a riveting machine, and belongs to the technical field of filter manufacturing. The device comprises a linear telescopic mechanism, a seat body is arranged at the telescopic end of the linear telescopic mechanism, a guide hole is formed in the end of the seat body, a set of hinge seats are distributed on the circumference of the peripheral side of the guide hole, each hinge seat is hinged to one end of a corresponding first connecting rod, the other end of each first connecting rod is connected with a pressing roller, and the position of the pressing roller corresponds to the position to be pressed of the filter cover plate; the middle of each first connecting rod is hinged to one end of a corresponding second connecting rod, the other ends of the second connecting rods are jointly hinged to a sliding plate, a guide column is fixedly connected to the sliding plate and matched in the guide hole in a guiding mode, a spring is arranged on the guide column in a sleeved mode, and the two ends of the spring can make elastic contact with the base body and the sliding plate respectively. The end side, connected with the pressing roller, of the first connecting rod is in an outward opening shape. According to the riveting device, one-time riveting of the filter cover plate can be achieved, the number of parts is reduced, the size of the riveting device is reduced, and the cost of the riveting device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filter manufacturing, in particular to a riveting die head device and a riveting machine for a filter cover plate. Background Art

[0002] The filter is a vehicle fuel filter device. During the processing of some models of filters, a riveting process needs to be implemented between the internal threaded cover plate and the thin cover. The traditional riveting forming method mainly relies on manual work, that is, the lower end cover is placed in a special mold, and then the threaded cover plate is manually riveted to the thin cover using special tools. There are several riveting bodies on the thin cover, and the threaded cover plate is provided with a plurality of riveting grooves adapted to the riveting bodies. Manual riveting generally adopts one-time forming. However, this method is easy to cause injuries to operators during operation, and there are great safety hazards. At the same time, the efficiency of manual riveting is low, and the quality of the riveted finished products cannot be completely uniform.

[0003] In the prior art, there are also riveting processes that are performed by riveting machines instead of manual work, such as a fully automatic filter threaded cover plate and thin cover riveting device with publication number CN106513522A, which mentions a riveting device, which includes a body, a rotatable turntable mounted on the body, a number of positioning molds evenly distributed on the turntable, and at least two riveting die heads mounted on the body and adapted to the positioning molds and reciprocating along the positioning molds, and the body is provided with an extraction device for extracting the riveted products in the positioning molds. Although the device can replace manual riveting work and improve riveting efficiency and product quality, the structure has multiple riveting die heads for multiple riveting molding, which makes the entire device have more parts and a larger equipment volume, thereby increasing the equipment cost. Utility Model Content

[0004] In order to solve the problems of many parts, large volume and high cost of existing devices, the utility model provides a riveting die head device and a riveting machine for filter cover. It adopts the following technical solutions:

[0005] A riveting die head device for a filter cover plate comprises a linear telescopic mechanism, a seat body is provided on the telescopic end of the linear telescopic mechanism, a guide hole is provided at the end of the seat body, a group of hinge seats are distributed circumferentially around the guide hole, each hinge seat is hinged to one end of a corresponding first connecting rod, the other end of the first connecting rod is connected to a pressing roller, and the position of the pressing roller corresponds to the position to be pressed on the filter cover plate;

[0006] The middle part of each first connecting rod is hinged to one end of the corresponding second connecting rod, and the other end of each second connecting rod is hinged to the slide plate. A guide column is fixedly connected to the slide plate, and the guide column is guided in the guide hole. A spring is sleeved on the guide column, and the two ends of the spring can be elastically contacted with the seat body and the slide plate respectively; wherein, the end side of the first connecting rod connected to the pressure roller is outwardly opened.

[0007] Furthermore, the pressure roller is rotatably connected to the first connecting rod.

[0008] Furthermore, the spring is a conical helical spring; the seat body is provided with a positioning ring, and the large end of the conical helical spring is clamped in the positioning ring.

[0009] Furthermore, the linear telescopic mechanism is a pneumatic cylinder or a hydraulic cylinder.

[0010] The present solution also provides a riveting machine, which includes a riveting die head for a filter cover plate as described in any one of the above items.

[0011] Compared with the prior art, the utility model has the following beneficial effects: a guide hole and an articulated seat are arranged on the seat body, a first connecting rod is respectively arranged on the articulated seat, a pressure roller is connected to the first connecting rod, the middle part of the first connecting rod is respectively articulated with one end of the corresponding second connecting rod, the other end of each second connecting rod is jointly articulated on the slide plate, a guide column is fixedly connected to the slide plate, the guide column guide fits in the guide hole, and a spring is sleeved on the guide column; the pressure roller is moved to rivet the part to be pressed of the filter cover, so that the one-time riveting of the filter cover can be achieved, and compared with the prior art, the number of parts is reduced, the size of the device is reduced, and the cost of the device is also reduced; in addition, the riveting die head device is used in the riveting machine, so the number of parts of the riveting machine can be reduced, the size of the riveting machine can be reduced, and the equipment cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a riveting die head device for a filter cover plate according to an embodiment of the utility model;

[0013] Figure 2 yes Figure 1 Schematic diagram of the local cross-section structure in the AA direction;

[0014] Figure 3 This is a schematic diagram of the connection structure between the first connecting rod and the matching parts in the embodiment of the utility model;

[0015] Figure 4 It is a structural schematic diagram of a riveting machine according to an embodiment of the utility model.

[0016] Explanation of the reference numerals: 1. linear telescopic mechanism; 2. seat body; 21. positioning ring; 3. guide hole; 4. hinge seat; 41. support plate; 5. first connecting rod; 51. ear plate; 52. fixing hole; 53. pin; 6. pressure roller; 61. through hole; 62. sliding bushing; 7. second connecting rod; 8. slide plate; 9. guide column; 10. spring; 100. filter cover; 200. thin cover; 201. riveting body; 300. riveting machine; 301. machine body; 302. turntable; 303. positioning mold; 304. extraction device. DETAILED DESCRIPTION

[0017] In order to make the utility model more clear, the following is a further description of a riveting die head device and a riveting machine for a filter cover of the utility model in conjunction with the accompanying drawings. The specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] like Figures 1 to 3 As shown, a riveting die head for a filter cover plate includes a vertically arranged linear telescopic mechanism 1, whose telescopic end is arranged downward. Preferably, the mechanism can be a cylinder or a hydraulic cylinder. A seat body 2 is provided on the telescopic end of the linear telescopic mechanism 1. The shape of the seat body 2 is not limited, but considering its easy processing, it is preferred to set the seat body 2 to a cylindrical shape. The upper end of the seat body 2 is threadedly connected to the rod body of the cylinder or the hydraulic cylinder through a central threaded hole. A guide hole 3 is provided at the center of the lower end surface of the seat body 2. The guide hole 3 is arranged along the axis of the seat body 2, and its hole shape is preferably circular. A group of articulated seats 4 are distributed on the lower end surface of the seat body 2 with the guide hole 3 as the center of the circle. Each articulated seat 4 is respectively hinged to one end of the corresponding first connecting rod 5 through an axial hole, and the other end of the first connecting rod 5 is connected to a pressure roller 6. Here, the first connecting rod 5 can only swing in the vertical plane, for example, by forming a vertical matching limiting plane between the hinge seat 4 and the corresponding first connecting rod 5: the hinge seat 4 has two parallel support plates 41, the support plates 41 are perpendicular to the lower end surface of the seat body 2, and the inner surfaces of the two support plates 41 are parallel to the two side surfaces of the first connecting rod 5 and are in gap contact, which is used to achieve plane limiting. The swinging direction of the pressure roller 6 corresponds to the part to be pressed on the filter cover 100; the material used for the pressure roller 6 can be quenched and tempered 45# steel to meet the requirements of strength, rigidity and wear resistance.

[0019] The middle area of ​​each first connecting rod 5 is hinged to one end of the corresponding second connecting rod 7 through the shaft and hole structure, and the other end of each second connecting rod 7 is hinged to the slide plate 8. The slide plate 8 is fixedly connected with a vertical guide column 9, which can be slidably guided and matched in the guide hole 3. A spring 10 is sleeved on the guide column 9, and the two ends of the spring 10 can be elastically contacted with the end of the seat body 2 and the surface of the slide plate 8 respectively; wherein, the lower end of the group of first connecting rods 5 (the end connected to the pressure roller 6) is outwardly open, and the outward opening angle of each first connecting rod 5 is consistent.

[0020] Preferably, the pressure roller 6 and the first connecting rod 5 are connected in rotation by a shaft-hole matching structure. Considering that the pressure roller 6 is subjected to a large force when working, a sliding bushing is provided at the shaft-hole matching position to reduce the rotation resistance under a large load. Figure 3 As shown, the lower end of the first connecting rod 5 has a pair of ear plates 51, the ear plates 51 are provided with coaxial fixing holes 52, and the fixing holes 52 are provided with a pin shaft 53; correspondingly, the pressure roller 6 is provided with a through hole 61 arranged along its axis, and the through hole 61 is provided with a sliding bushing 62, and the inner hole of the sliding bushing 62 is rotatably slidably matched with the pin shaft 53.

[0021] The spring 10 acts on the slide plate 8 through the vertical elastic force it provides, and then transmits it through the second connecting rod 7; when the pressure roller 6 moves outward, the first connecting rod 5 drives the slide plate 8 to move upward through the second connecting rod 7 and compresses the spring 10. The compressed spring 10 is compressed to provide a reverse force, and then provides a downward force for the pressure roller 6, so that the protruding riveted body 201 of the thin cover 200 is pressed down on the filter cover 100 to achieve riveting. Considering that the end of the riveted body 201 is prone to warping and not riveting in place during the riveting process, for this reason, the pressure roller 6 is required to provide a greater pressing force when pressing down to the end of the riveted body 201. The spring 10 is preferably a conical helical spring, the small end of the conical helical spring is close to one side of the slide plate 8, and the large end is close to one side of the lower end surface of the seat body 2. A positioning ring 21 is provided on the seat body 2, and the large end of the conical helical spring is stuck in the positioning ring 21 to form left and right limit.

[0022] Among them, the conical helical spring provides nonlinear resilience. When the conical helical spring is under pressure, the c value (helical spring winding ratio) of the spring coil near the large end is larger, and the c value of the small end of the spring is smaller, and the spring is harder. The spring coils in the softer part will be tightened first during work. Before the first coil (starting from the large end) is tightened, the force and deformation of the spring are still proportional. After tightening, the tightened spring coils will no longer participate in the work; therefore, as the degree of deformation increases, the number of spring coils participating in the work will become less and less, and the spring index will also develop in a smaller direction, which makes the spring harder and harder, providing a greater pressing force for the end of the riveted body 201. Of course, in some cases, the use of cylindrical helical springs can also meet the use requirements.

[0023] When the device is in use, the telescopic end of the linear telescopic mechanism 1 moves downward, so that the pressure roller 6 is pressed against the root of the riveted body 201, and then, under the action of the curved surface of the pressure roller 6, as the linear telescopic mechanism moves downward, the pressure roller 6 presses against the surface of the riveted body 201 and rolls outward, while gradually increasing the downward pressing force until the riveted body 201 is riveted on the filter cover 100. This structure can realize the one-time riveting of the filter cover, and compared with the prior art, it reduces the number of parts, reduces the size of the device, and also reduces the cost of the device.

[0024] The present invention also provides a riveting machine 300, in which the riveting die head for the filter cover plate is used. The specific structure is as follows Figure 4 As shown, it comprises a body 301, a rotatable turntable 302 mounted on the body 301, a positioning mold 303 evenly distributed on the turntable 302, and the filter cover riveting die head mounted on the body 301 and adapted to the positioning mold 303. The body 301 is provided with an extraction device 304 for extracting the riveted product in the positioning mold. Since the rest of the structure of the riveting machine has been disclosed in the patent document with publication number CN106513522A, it will not be repeated here.

[0025] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form; any technician familiar with the field can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the utility model without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A riveting die head device for a filter cover, comprising a linear telescopic mechanism (1), characterized in that: A seat body (2) is provided on the telescopic end of the linear telescopic mechanism (1), a guide hole (3) is provided at the end of the seat body (2), a group of hinge seats (4) are distributed circumferentially around the guide hole (3), each hinge seat (4) is hinged to one end of a corresponding first connecting rod (5), the other end of the first connecting rod (5) is connected to a pressing roller (6), and the position of the pressing roller (6) corresponds to the position of the filter cover plate (100) to be pressed; The middle of each first connecting rod (5) is hinged to one end of the corresponding second connecting rod (7), and the other end of each second connecting rod (7) is hinged to a slide plate (8). A guide column (9) is fixedly connected to the slide plate (8), and the guide column (9) is guided and fitted in the guide hole (3). A spring (10) is sleeved on the guide column (9), and the two ends of the spring (10) can elastically contact the seat body (2) and the slide plate (8) respectively; wherein the end side of the first connecting rod (5) connected to the pressure roller (6) is outwardly open.

2. A riveting die head device for a filter cover according to claim 1, characterized in that: The pressure roller (6) is rotatably connected to the first connecting rod (5).

3. A riveting die head device for a filter cover according to claim 1 or 2, characterized in that: The spring (10) is a conical helical spring; the seat body (2) is provided with a positioning ring (21), and the large end of the conical helical spring is clamped in the positioning ring (21).

4. The riveting die head device for a filter cover according to claim 1, characterized in that: The linear telescopic mechanism (1) is a pneumatic cylinder or a hydraulic cylinder.

5. A riveting machine, characterized in that: A riveting die head for a filter cover plate comprising any one of claims 1 to 4.

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