Heater water chamber connector riveting tool

Abstract

The utility model belongs to the technical field of automobile heaters, and discloses a heater water chamber connector riveting tool which comprises an upper die base and a lower die base, a guide column, a positioning die core and a water pipe support positioning piece are arranged at the upper end of the lower die base, a guide cylinder and a taper punch are arranged at the lower end of the upper die base, and the guide cylinder is connected with the guide column in an up-down sliding mode. A punching groove matched with the taper punch is formed in the positioning die core, and the water pipe support positioning piece is located on one side of the positioning die core. By means of sliding fit of the guide column and the guide cylinder, the trouble that an existing riveting tool needs to be adjusted and aligned to the center can be omitted, use is convenient, and time and labor are saved. According to the water pipe support riveting device, the taper punch is used for opening the riveting head, riveting is completed by extruding the protruding edges and the water chamber connecting port, the riveting quality is stable, the water pipe support does not shift or fall off, the product percent of pass is high, and the product quality cost is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile heaters, and particularly relates to a riveting tooling for the connection port of a heater water chamber. Background Art

[0002] During the production and processing of automobile heaters, the installation of the water chamber main body and the inlet and outlet water pipes often requires riveting a water pipe support (a rectangular block with a through hole in the center) at the connection port of the water chamber main body first, then brazing and fixing the connection part, and finally assembling and connecting the inlet and outlet water pipes with the corresponding water pipe supports. The existing riveting tooling for the connection port of the water chamber main body mainly fixes the water chamber main body through a water chamber positioning device, and then uses a taper punch located above the water chamber to press down through a punching machine to squeeze the connection port of the water chamber main body, so that the material at the water chamber connection port deforms to fit and rivet with the through hole of the water pipe support. Since this process method has an upper and lower split structure, the center alignment adjustment work needs to be carried out before stamping to ensure that the punch, the water chamber connection port, and the water pipe support are on the same central axis, which is time-consuming and laborious and inconvenient to use. Content of the Utility Model

[0003] Aiming at the deficiencies in the background art, the utility model provides a riveting tooling for the connection port of a heater water chamber, which utilizes the sliding fit of a guide post and a guide cylinder to avoid the trouble of center alignment adjustment, saving time and effort.

[0004] To achieve the above object, the technical solution of the utility model is as follows:

[0005] A riveting tooling for the connection port of a heater water chamber, characterized in that: it includes an upper die base and a lower die base. A guide post, a positioning die core, and a water pipe support positioning member are provided at the upper end of the lower die base. A guide cylinder and a taper punch are provided at the lower end of the upper die base. The guide cylinder is slidably connected to the guide post up and down. A stamping groove that cooperates with the taper punch is provided on the positioning die core. The water pipe support positioning member is located on one side of the positioning die core.

[0006] Preferably, a riveting head is provided in the stamping groove. The riveting head includes a fixing part and a plurality of arc-shaped movable parts that are circumferentially arrayed at the top of the fixing part. The plurality of arc-shaped movable parts form a hollow cylindrical shape, and an inner conical surface matching the taper punch is provided on the inner wall of the upper end, and an extrusion convex rib is provided on the outer wall of the upper end. When the taper punch presses downward on the inner conical surface, the plurality of arc-shaped movable parts expand outward so that the extrusion convex rib squeezes the water chamber connection interface to complete riveting.

[0007] Preferably, the fixing part, the extrusion convex rib, and the plurality of movable parts are of an integral structure, and a slitting groove is provided between every two adjacent movable parts.

[0008] Preferably, the fixing part is in fit connection with an installation groove provided at the bottom of the stamping groove.

[0009] Preferably, an elastic pressing cylinder is sleeved outside the tapered punch. A receiving groove coaxial with the punching head is provided at the bottom end of the elastic pressing cylinder, and the inner diameter of the receiving groove is greater than or equal to the aperture of the through hole on the water pipe support.

[0010] Preferably, the elastic pressing cylinder is made of rubber.

[0011] Preferably, a positioning groove matching the shape and size of the water pipe support is provided on one side of the water pipe support positioning member close to the positioning die core.

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

[0013] (1) By utilizing the sliding fit of the guide pillar and the guide cylinder, when the tapered punch vertically presses downward along with the upper die base, the through holes of the tapered punch, the water chamber connection port, and the water pipe support are on the same central axis, thus saving the trouble of adjusting and aligning the center required by the existing riveting tooling, being convenient to use, time-saving and labor-saving;

[0014] (2) The present utility model uses the tapered punch to expand the riveting head, and completes the riveting through the extrusion of the extrusion ridge and the water chamber connection interface. The riveting quality is stable, the water pipe support does not shift or fall off, the product qualification rate is high, and the product quality cost is effectively reduced;

[0015] (3) By using the positioning die core and the water pipe support positioning member, the rapid and accurate positioning of the riveting fittings can be realized, and during the stamping and riveting process, the elastic pressing cylinder is used to tightly fix the water chamber body, effectively improving the product quality, saving time, and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, purposes, and advantages of the present utility model will become more obvious by reading the detailed description of the non-restrictive embodiments with reference to the following drawings.

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the present utility model in the use state;

[0019] Figure 3 is a schematic sectional structural diagram of the present utility model in the use state;

[0020] Figure 4 is the present utility model Figure 3 is an enlarged structural diagram at A in;

[0021] Figure 5 is a schematic structural diagram of the riveting head of the present utility model;

[0022] In the figure: 1. upper die base, 2. lower die base, 3. guide pillar, 4. positioning die core, 401. stamping groove, 402. mounting groove, 5. water pipe support positioning part, 501. positioning groove, 6. guiding cylinder, 7. taper punch, 8. riveting joint, 801. fixing part, 802. arc-shaped movable part, 803. inner conical surface, 804. extrusion convex rib, 805. grooving, 9. elastic pressing cylinder, 901. accommodating groove, 10. water chamber body, 11. water pipe support. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is 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 thus should not be construed as a limitation to the present invention.

[0025] In the present invention, unless otherwise clearly defined and limited, the terms "set", "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Such as Figures 1 to 3As shown in the figure, a riveting tool for the connection port of a heater water chamber includes an upper die base 1 and a lower die base 2. A guide post 3, a positioning die core 4, and a water pipe support positioning member 5 are provided at the upper end of the lower die base. A guide cylinder 6 and a taper punch 7 are provided at the lower end of the upper die base. The guide cylinder is slidably connected to the guide post up and down. The number of the guide cylinders and the guide posts is two and they are connected in one-to-one correspondence. The two groups of guide cylinders and guide posts are symmetrically distributed on both sides of the upper die base and the lower die base. By using the sliding fit between the guide cylinder and the guide post, it is ensured that when the taper punch vertically presses downward with the upper die base, the through holes of the taper punch, the water chamber connection port, and the water pipe support are on the same central axis. A stamping groove 401 that cooperates with the taper punch is provided on the positioning die core. The stamping groove is located directly below the taper punch, thus eliminating the trouble of adjusting and aligning the center required by the existing riveting tool, being convenient to use, time-saving and labor-saving. The water pipe support positioning member is located on one side of the positioning die core, facilitating the quick and accurate positioning of the water pipe support. A positioning groove 501 that matches the shape and size of the water pipe support is provided on the side of the water pipe support positioning member close to the positioning die core. In this embodiment, the water pipe support is a rectangular block with a through hole in the center, and the positioning groove is also a rectangular groove.

[0027] As Figures 1 to 5 shown, a riveting joint 8 is provided in the stamping groove. The riveting joint includes a fixing part 801 and a plurality of arc-shaped movable parts 802 that are circumferentially arrayed at the top of the fixing part. The fixing part, the extrusion convex ridges, and the plurality of movable parts are of an integral structure. The use of an integral forming structure can effectively ensure its connection strength. A cut groove 805 is provided between every two adjacent movable parts, facilitating the outward expansion and inward contraction movements of the plurality of arc-shaped movable parts. It has a certain elasticity. The plurality of arc-shaped movable parts form a hollow cylindrical shape, and an inner conical surface 803 that matches the taper punch is provided on the inner wall of its upper end. An extrusion convex ridge 804 is provided on the outer wall of the upper end. The inner wall of the upper end of each arc-shaped movable part is provided with an inclined surface, and the inclined surfaces at the inner walls of the upper ends of the other arc-shaped movable parts form a frustum-shaped structure that is larger at the top and smaller at the bottom, matching the end part of the taper punch that is larger at the top and smaller at the bottom. The extrusion convex ridges on the outer wall of the upper end of each arc-shaped movable part also form an intermittent annular structure, which specifically includes a frustum-shaped part that is smaller at the top and larger at the bottom, a vertical part, and a horizontal part that are sequentially connected from top to bottom. The included angle between the vertical part and the horizontal part is 90°. This structural design enables the taper punch to press downward on the inner conical surface, causing the plurality of arc-shaped movable parts to expand outward, making the extrusion convex ridges squeeze the water chamber connection interface to complete riveting. The riveting firmness and stability are good, reducing the phenomenon of the water pipe support falling off and shifting; after stamping is completed, each arc-shaped movable part rebounds and resets, waiting for the next stamping operation. In this embodiment, the number of arc-shaped movable parts is four. For the convenience of disassembly, assembly, replacement, and maintenance of the riveting joint, the fixing part is connected in cooperation with an installation groove 402 provided at the bottom of the stamping groove. The inner diameter of the installation groove matches the outer diameter of the lower end of the fixing part.

[0028] As Figures 1 to 3As shown in the figure, an elastic pressing cylinder 9 made of rubber is sleeved outside the tapered punch. A receiving groove 901 coaxial with the punching head is provided at the bottom end of the elastic pressing cylinder. The inner diameter of the receiving groove is greater than or equal to the aperture of the through hole on the water pipe support. When the upper die holder moves downward, the elastic pressing cylinder moves downward accordingly. After its bottom end surface abuts against the upper end surface of the water pipe support, the punch further moves downward to complete the stamping, and the elastic pressing cylinder deforms and compresses. The end of the riveting joint can be embedded in the receiving groove.

[0029] The method of using the utility model in cooperation with a punching press includes the following process flow: manual feeding - tooling adjustment - punching press depth adjustment - pressing the start button - downward pressing and riveting - manual unloading. Specifically:

[0030] (1) Manually place the tooling of the utility model on the punching press platform and press the lower die holder 2 tightly through a pressing block (the tooling is centered on the punching press platform);

[0031] (2) After adjusting the stamping depth of the punching press, manually feed and place the product (water chamber body 10) on the upper end of the positioning die core 4, and place the water pipe support 11 in the positioning groove 501 of the water pipe support positioning member 5;

[0032] (3) Start the punching press, press the start button, and the punch slide of the punching press presses down the upper die holder 1 to form a tight press on the product for riveting, so that the material at the connection port of the water chamber body 10 is locally deformed to form a tight fit with the water pipe support 11;

[0033] (4) After the riveting is completed, the punch slide of the punching press rises, the riveting joint 8 rebounds to its original state, and the product is removed from the tooling manually.

[0034] The working principle of the utility model is as follows:

[0035] The tooling of the utility model determines the central positions of the tapered punch 7 and the riveting joint 8 through two guide posts 3 and a guide cylinder 6. By pressing down the upper die holder 1, the elastic pressing cylinder 9 presses the product tightly to prevent the product from jumping up. After pressing the product tightly, the tapered punch 7 continues to press down. The front end taper of the tapered punch 7 contacts the inner taper surface 803 of the riveting joint 8 to expand the riveting joint 8. The protruding part (extrusion convex edge 804) at the front end of the riveting joint 8 deforms the water chamber material to tightly press the through hole of the water pipe support 11 to form a riveting. After the action is completed, the tapered punch rises, and the riveting joint 8 rebounds to its original state, making the product easily separated from the tooling after riveting.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

Claims

1. A riveting tool for a heater water chamber connection port, characterized in that: It includes an upper die base and a lower die base. The upper end of the lower die base is provided with a guide column, a positioning die core and a water pipe support positioning piece. The lower end of the upper die base is provided with a guide cylinder and a tapered punch. The guide cylinder is slidably connected to the guide column up and down. The positioning die core is provided with a stamping groove that cooperates with the tapered punch. The water pipe support positioning piece is located on one side of the positioning die core.

2. A heater water chamber connection port riveting tool as claimed in claim 1, characterized in that: A rivet head is provided in the stamping groove, and the rivet head includes a fixed part and a plurality of arc-shaped movable parts distributed in a circular array at the top of the fixed part. The plurality of arc-shaped movable parts form a hollow cylinder, and the inner wall of the upper end thereof is provided with an inner conical surface matching the tapered punch, and the outer wall of the upper end is provided with an extrusion ridge.

3. A heater water chamber connection port riveting tool as claimed in claim 2, characterized in that: The fixed part, the extruded ridge and the plurality of movable parts are an integrated structure, and a groove is provided between each two adjacent movable parts.

4. A heater water chamber connection port riveting tool as claimed in claim 2, characterized in that: The fixing portion is matched and connected with a mounting groove arranged at the bottom of the stamping groove.

5. A heater water chamber connection port riveting tool as claimed in claim 1, characterized in that: The tapered punch is sleeved with an elastic pressing cylinder on the outside, and a receiving groove coaxial with the punching head is provided at the bottom end of the elastic pressing cylinder. The inner diameter of the receiving groove is greater than or equal to the aperture of the through hole on the water pipe support.

6. A heater water chamber connection port riveting tool as claimed in claim 5, characterized in that: The elastic pressure cylinder is made of rubber.

7. A heater water chamber connection port riveting tool as claimed in claim 1, characterized in that: A positioning groove matching the shape and size of the water pipe support is provided on one side of the water pipe support positioning piece close to the positioning mold core.

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