Water pipe expansion riveting tool

Abstract

The utility model relates to the technical field of water pipe expansion riveting tools, in particular to a water pipe expansion riveting tool which reduces product deformation, prevents the problem of product deformation caused by excessive instantaneous pressure, improves product quality, facilitates riveting of different products and water pipes and improves practicability. Comprising a bottom plate and a handle; the riveting device further comprises a fixing mechanism, an auxiliary mounting mechanism, a guide mechanism and a riveting mechanism, the fixing mechanism and the auxiliary mounting mechanism are mounted on the press through bolts, the guide mechanism is mounted on the fixing mechanism and the auxiliary mounting mechanism, the riveting mechanism is mounted on the auxiliary mounting mechanism, and the fixing mechanism and the auxiliary mounting mechanism are guided and limited through the guide mechanism. The fixing mechanism limits and fixes a product and a water pipe, the auxiliary mounting mechanism assists the riveting mechanism in expanding riveting of the water pipe, the guide mechanism guides and limits the auxiliary mounting mechanism, and the riveting mechanism performs expanding riveting on the water pipe and the product.

Description

Technical Field

[0001] The utility model relates to the technical field of water pipe flaring and riveting tools, in particular to a water pipe flaring and riveting tool. Background Technique

[0002] Flaring and riveting means that during the riveting process, part of the material of the riveting part undergoes plastic deformation under the action of external force, forming a tight fit with the base material, thereby realizing the reliable connection of two parts. In the manufacturing process of heat exchangers, the riveting between the top plate and the water pipe is an important process. Traditional riveting methods usually adopt manual operation, with a set of tools for each product, resulting in low efficiency, high cost and difficult to guarantee accuracy.

[0003] Existing water pipe flaring and riveting tools, such as the prior art with the application number CN202323534044.6, include an upper template, a lower template, a guiding mechanism, a fixed seat, a guide sleeve, a guiding column, a bushing, a first limiting column, a second limiting column, a hanging plate, an adjustable riveting and pressing mechanism, a flaring and expanding main body, etc. The structure is simple and the operation is convenient. It can be quickly adjusted and replaced according to different specifications and requirements of heat exchangers, and is suitable for the riveting of heat exchanger top plates and water pipes of different specifications.

[0004] However, when the existing technology flares and rivets the water pipe, the deformation amount is large, which will squeeze out obvious deformation of the riveting part. Moreover, the riveting force needs to be strictly controlled. If the force is too small, the riveting is not tight. If the force is too large, the product is easily riveted and deformed, and the qualified rate is unstable. Summary of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides a water pipe flaring and riveting tool that reduces product deformation, prevents the product from being pressed and deformed due to excessive instantaneous pressure, improves product quality, and is convenient for riveting different products and water pipes, thereby improving practicability.

[0006] A water pipe flaring and riveting tool of the utility model includes a bottom plate and a handle; it also includes a fixing mechanism, an auxiliary installation mechanism, a guiding mechanism and a riveting and pressing mechanism. The fixing mechanism and the auxiliary installation mechanism are installed on the press through bolts. The guiding mechanism is installed on the fixing mechanism and the auxiliary installation mechanism. The riveting and pressing mechanism is installed on the auxiliary installation mechanism. The fixing mechanism and the auxiliary installation mechanism are guided and limited by the guiding mechanism. The fixing mechanism limits and fixes the product and the water pipe. The auxiliary installation mechanism assists the riveting and pressing mechanism to flare and rivet the water pipe. The guiding mechanism guides and limits the auxiliary installation mechanism. The riveting and pressing mechanism flares and rivets the water pipe and the product; the fixing mechanism limits and fixes the product and the water pipe, and can flare and rivet products and water pipes with different shapes by replacing the fixing mechanism. The auxiliary installation mechanism assists the riveting and pressing mechanism to flare and rivet the water pipe. The guiding mechanism guides and limits the auxiliary installation mechanism. The riveting and pressing mechanism flares and rivets the water pipe and the product, reducing product deformation, preventing the product from being pressed and deformed due to excessive instantaneous pressure, and improving product quality.

[0007] Preferably, the fixing mechanism includes a mounting base, a support plate, a positioning component and a positioning column. The handle is installed on the bottom plate using an Allen bolt. The support plate is installed on the mounting base. The support plate includes the positioning component. The mounting base is fixed on the bottom plate. The linear bearing is installed in the mounting base. The positioning column is limited by the linear bearing. A return spring is installed at the bottom of the positioning column. Place the product on the support plate, fix the position by the positioning component, and place the water pipe through the positioning column to complete the product placement step.

[0008] Preferably, the auxiliary installation mechanism includes an upper top plate, a limiting column, a lower top plate and a second linear bearing. The upper top plate is connected to the lower top plate through the limiting column. The second linear bearing is installed in the middle of the lower top plate. The riveting mechanism penetrates from the upper top plate to below the lower top plate. The guiding mechanism is installed on the bottom surface of the lower top plate. The lower top plate is connected to the bottom plate through the guiding mechanism. Fixed bolt holes are provided on the upper top plate. Place the whole set of tooling under the press, adjust the position, press down the press, and use screws to fix the upper top plate and the bottom plate respectively.

[0009] Preferably, the guiding mechanism includes two support blocks, two positioning pins, two limiting blocks and two positioning holes. The two support blocks are respectively installed at both ends of the mounting base and fixed to the bottom plate with screws. The positioning pins are installed above the two support blocks. The two positioning pins are respectively arranged on both sides of the second linear bearing and connected to the lower top plate with screws. Insert the positioning pins on the support blocks into the positioning holes on the limiting blocks at the bottom of the lower top plate. Place the whole set of tooling under the press, adjust the position, press down the press, and use screws to fix the upper top plate and the bottom plate respectively. Guide by sliding the positioning pins in the positioning holes.

[0010] Preferably, the riveting mechanism includes a first nitrogen spring, a stop block, a baffle plate, a guide post, a second nitrogen spring, a thimble, a thimble fixing block, a pressing plate and a pressing block. The first nitrogen spring is fixed below the upper top plate by screws. The baffle plate is installed above the lower top plate. The guide post passes through the second linear bearing. A stop block is installed above the guide post by screws. The thimble fixing block is screwed below the guide post. The thimble is installed in the thimble fixing block. Two second nitrogen springs are symmetrically distributed on both sides of the lower top plate. A pressing plate is installed below by screws. The pressing plate is equipped with a pressing block. Start the equipment, the press descends, the limit block descends, so that the positioning pin extends into the positioning hole to limit and guide the descending position. The pressing block contacts the product first, and the second nitrogen spring works to reduce the instantaneous pressure on the product and protect the product from deformation. Immediately afterwards, the thimble contacts the end face of the water pipe, and the first nitrogen spring works to continuously increase the pressure. The thimble fixing block presses down the positioning column, and the spring below the positioning column compresses, so that the positioning column descends until the limit block and the support block. The pressing action ends. The thimble presses the end face of the water pipe to deform it and contacts the product outward to achieve the riveting effect. Start the equipment again, the press lifts up, and the first nitrogen spring, the second nitrogen spring and the spring below the positioning column rebound, and the tooling returns to its original state. The operator takes the product manually to complete a set of actions, reducing product deformation and preventing the problem of deforming the product due to excessive instantaneous pressure, and improving product quality.

[0011] Preferably, the thimble can be disassembled and replaced through the thimble fixing block; only four thimbles need to be replaced after the thimble is worn, reducing costs.

[0012] Preferably, the positioning component is a replaceable design; by replacing the positioning component and the thimble, different products can be riveted, more scenarios can be adapted, and the practicability is improved.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The fixing mechanism limits and fixes the product and the water pipe, and different-shaped products and water pipes can be flared and riveted through the replacement of the fixing mechanism. The auxiliary installation mechanism assists the riveting mechanism to flare and rivet the water pipe. The guiding mechanism guides and limits the auxiliary installation mechanism. The riveting mechanism flares and rivets the water pipe and the product, reducing product deformation and preventing the problem of deforming the product due to excessive instantaneous pressure, and improving product quality. Description of the Drawings

[0014] Figure 1 is the first axonometric structural schematic diagram of the present utility model;

[0015] Figure 2 is the second axonometric structural schematic diagram of the present utility model;

[0016] Figure 3 is the top view sectional axonometric structural schematic diagram of the present utility model;

[0017] Figure 4 is the bottom view sectional axonometric structural schematic diagram of the present utility model;

[0018] Figure 5 is an exploded view of the riveting mechanism of the present utility model;

[0019] Reference numerals in the drawings: 01, fixing mechanism; 11, bottom plate; 12, handle; 13, mounting seat; 14, support plate; 15, positioning assembly; 16, positioning post; 02, auxiliary mounting mechanism; 21, upper top plate; 22, limiting post; 23, lower top plate; 24, second linear bearing; 03, guiding mechanism; 31, support block; 32, positioning pin; 33, limiting block; 34, positioning hole; 04, riveting mechanism; 41, first nitrogen spring; 42, stop block; 43, baffle plate; 44, guide post; 45, second nitrogen spring; 46, ejector pin; 47, ejector pin fixing block; 48, pressing plate; 49, pressing block. Detailed implementation manners

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0021] Embodiment 1

[0022] As Figures 1 to 5 shown, a water pipe expanding and riveting tooling includes a bottom plate 11 and a handle 12, and further includes a fixing mechanism 01, an auxiliary mounting mechanism 02, a guiding mechanism 03 and a riveting mechanism 04. The fixing mechanism 01 and the auxiliary mounting mechanism 02 are installed on a press by bolts. The guiding mechanism 03 is installed on the fixing mechanism 01 and the auxiliary mounting mechanism 02. The riveting mechanism 04 is installed on the auxiliary mounting mechanism 02;

[0023] The fixing mechanism 01 and the auxiliary mounting mechanism 02 are guided and limited by the guiding mechanism 03. The fixing mechanism 01 limits and fixes the product and the water pipe. The auxiliary mounting mechanism 02 assists the riveting mechanism 04 to expand and rivet the water pipe. The guiding mechanism 03 guides and limits the auxiliary mounting mechanism 02. The riveting mechanism 04 expands and rivets the water pipe and the product;

[0024] The fixing mechanism 01 includes a mounting seat 13, a support plate 14, a positioning assembly 15 and a positioning post 16. The handle 12 is installed on the bottom plate 11 by an inner hexagon bolt. The support plate 14 is installed on the mounting seat 13. The support plate 14 includes a positioning assembly 15. The mounting seat 13 is fixed on the bottom plate 11. A linear bearing is installed in the mounting seat 13. The positioning post 16 is limited by the linear bearing. A return spring is installed at the bottom of the positioning post 16;

[0025] The auxiliary installation mechanism 02 includes an upper top plate 21, a limit post 22, a lower top plate 23 and a second linear bearing 24. The upper top plate 21 is connected to the lower top plate 23 through the limit post 22. The second linear bearing 24 is installed in the middle of the lower top plate 23. The riveting mechanism 04 penetrates from the upper top plate 21 to the lower part of the lower top plate 23. The guiding mechanism 03 is installed on the bottom surface of the lower top plate 23. The lower top plate 23 is connected to the bottom plate 11 through the guiding mechanism 03. Fixed bolt holes are provided on the upper top plate 21;

[0026] The guiding mechanism 03 includes two support blocks 31, two positioning pins 32, two limit blocks 33 and two positioning holes 34. The two support blocks 31 are respectively arranged at both ends of the mounting seat 13 and fixed to the bottom plate 11 with screws. The positioning pins 32 are installed above the two support blocks 31. The two positioning pins 32 are respectively arranged on both sides of the second linear bearing 24 and connected to the lower top plate 23 with screws;

[0027] Place the product on the support plate 14, fix the position by the positioning component 15, place the water pipe through the positioning post 16, complete the product placement step. Place the whole set of tooling under the press, adjust the position, press down the press, and use screws to fix the upper top plate 21 and the bottom plate 11 respectively. Insert the positioning pin 32 on the support block 31 into the positioning hole 34 on the limit block 33 at the bottom of the lower top plate 23. Place the whole set of tooling under the press, adjust the position, press down the press, and use screws to fix the upper top plate 21 and the bottom plate 11 respectively. Guide through the sliding of the positioning pin 32 in the positioning hole 34.

[0028] Embodiment 2

[0029] As Figures 1 to 5 shown, a water pipe flaring and riveting tooling includes a bottom plate 11 and a handle 12, and also includes a fixing mechanism 01, an auxiliary installation mechanism 02, a guiding mechanism 03 and a riveting mechanism 04. The fixing mechanism 01 and the auxiliary installation mechanism 02 are installed on the press through bolts. The guiding mechanism 03 is installed on the fixing mechanism 01 and the auxiliary installation mechanism 02. The riveting mechanism 04 is installed on the auxiliary installation mechanism 02;

[0030] The fixing mechanism 01 and the auxiliary installation mechanism 02 are guided and limited by the guiding mechanism 03. The fixing mechanism 01 limits and fixes the product and the water pipe. The auxiliary installation mechanism 02 assists the riveting mechanism 04 to flare and rivet the water pipe. The guiding mechanism 03 guides and limits the auxiliary installation mechanism 02. The riveting mechanism 04 flares and rivets the water pipe and the product;

[0031] The guiding mechanism 03 includes two support blocks 31, two positioning pins 32, two limit blocks 33 and two positioning holes 34. The two support blocks 31 are respectively arranged at both ends of the mounting seat 13 and fixed to the bottom plate 11 with screws. The positioning pins 32 are installed above the two support blocks 31. The two positioning pins 32 are respectively arranged on both sides of the second linear bearing 24 and connected to the lower top plate 23 with screws;

[0032] The riveting mechanism 04 includes a first nitrogen spring 41, a stop block 42, a baffle plate 43, a guide post 44, a second nitrogen spring 45, a thimble 46, a thimble fixing block 47, a pressing plate 48 and a pressing block 49. The first nitrogen spring 41 is fixed below the upper top plate 21 by screws. The baffle plate 43 is installed above the lower top plate 23. The guide post 44 passes through the second linear bearing 24. A stop block 42 is installed above the guide post 44 by screws. A thimble fixing block 47 is screwed onto the lower part of the guide post 44. The thimble 46 is installed in the thimble fixing block 47. Two second nitrogen springs 45 are symmetrically distributed on both sides of the lower top plate 23. A pressing plate 48 is installed below by screws. The pressing plate 48 is provided with a pressing block 49;

[0033] The thimble 46 can be disassembled and replaced through the thimble fixing block 47;

[0034] The positioning component 15 is designed to be replaceable;

[0035] Start the equipment, the press machine presses down, the limit block 33 moves downwards, so that the positioning pin 32 extends into the positioning hole 34 to limit and guide the pressing-down position. The pressing block 49 contacts the product first, and the second nitrogen spring 45 works to reduce the instantaneous pressure on the product and protect the product from deformation. Immediately afterwards, the thimble 46 contacts the end face of the water pipe, and the first nitrogen spring 41 works to continuously increase the pressure. The thimble fixing block 47 presses down the positioning post 16, and the spring below the positioning post 16 compresses, so that the positioning post 16 moves down until the limit block 33 contacts the support block 31, and the pressing-down action ends. The thimble 46 presses the end face of the water pipe to deform it and contacts the product outward to achieve the riveting effect. Start the equipment again, the press machine lifts up, and the first nitrogen spring 41, the second nitrogen spring 45 and the spring below the positioning post 16 rebound, and the tooling returns to its original state. The operator takes the product to complete a set of actions, reducing the deformation of the product and preventing the problem that the product is pressed and deformed due to excessive instantaneous pressure, and improving the product quality.

[0036] As Figures 1 to 5As shown in the figure, a pipe flaring riveting tooling of the present utility model, when working, places the product on the support plate 14, fixes the position by the positioning component 15, places the pipe through the positioning column 16, and completes the product placement step. Place the whole set of tooling under the press, adjust the position, press down the press, and use screws to fix the upper top plate 21 and the bottom plate 11 respectively. Insert the positioning pin 32 on the support block 31 into the positioning hole 34 on the limit block 33 at the bottom of the lower top plate 23. Place the whole set of tooling under the press, adjust the position, press down the press, and use screws to fix the upper top plate 21 and the bottom plate 11 respectively. Guide by the sliding of the positioning pin 32 in the positioning hole 34. Start the equipment, the press presses down, the limit block 33 moves downwards, so that the positioning pin 32 extends into the positioning hole 34 to limit and guide the pressing position. The pressing block 49 first contacts the product, and the second nitrogen spring 45 works to reduce the instantaneous pressure on the product and protect the product from deformation. Immediately afterwards, the ejector pin 46 contacts the end face of the pipe, and the first nitrogen spring 41 works to continuously increase the pressure. The ejector pin fixing block 47 presses down the positioning column 16, and the spring below the positioning column 16 compresses, so that the positioning column 16 moves downwards until the limit block 33 and the support block 31. The pressing action ends. The ejector pin 46 presses the end face of the pipe to deform it, and contacts the product outward to achieve the riveting effect. Start the equipment again, the press lifts up, the first nitrogen spring 41, the second nitrogen spring 45 and the spring below the positioning column 16 rebound, and the tooling returns to its original state. Manually take the product to complete a set of actions, reduce product deformation, prevent the problem that the product is deformed by excessive instantaneous pressure, and improve product quality.

[0037] The main functions realized by the present utility model are: during the working process of the pipe flaring riveting tooling, reduce product deformation, prevent the problem that the product is deformed by excessive instantaneous pressure, improve product quality, and facilitate riveting of different products and pipes, improving practicability.

[0038] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A water pipe expansion riveting tool, comprising a base plate (11) and a handle (12); characterized in that: It also includes a fixing mechanism (01), an auxiliary installation mechanism (02), a guiding mechanism (03) and a riveting mechanism (04); the fixing mechanism (01) and the auxiliary installation mechanism (02) are installed on a press by means of bolts; the guiding mechanism (03) is installed on the fixing mechanism (01) and the auxiliary installation mechanism (02); and the riveting mechanism (04) is installed on the auxiliary installation mechanism (02); The fixing mechanism (01) and the auxiliary installation mechanism (02) are guided and limited by the guide mechanism (03); the fixing mechanism (01) limits and fixes the product and the water pipe; the auxiliary installation mechanism (02) assists the riveting and pressing mechanism (04) in riveting the water pipe; the guide mechanism (03) guides and limits the auxiliary installation mechanism (02); and the riveting and pressing mechanism (04) rivets the water pipe and the product.

2. A water pipe expansion riveting tool as claimed in claim 1, characterized in that: The fixing mechanism (01) comprises a mounting seat (13), a support plate (14), a positioning assembly (15) and a positioning column (16); the handle (12) is mounted on the base plate (11) using a hexagon socket bolt; the support plate (14) is mounted on the mounting seat (13); the support plate (14) comprises a positioning assembly (15); the mounting seat (13) is fixed on the base plate (11); a linear bearing is mounted in the mounting seat (13); the positioning column (16) is limited by the linear bearing; a rebound spring is mounted at the bottom of the positioning column (16).

3. A water pipe expansion riveting tool as claimed in claim 2, characterized in that: The auxiliary installation mechanism (02) comprises an upper top plate (21), a limiting column (22), a lower top plate (23) and a second linear bearing (24); the upper top plate (21) is connected to the lower top plate (23) through the limiting column (22); the second linear bearing (24) is installed in the middle of the lower top plate (23); the riveting mechanism (04) passes through from the upper top plate (21) to the bottom of the lower top plate (23); the guide mechanism (03) is installed on the bottom surface of the lower top plate (23); the lower top plate (23) is connected to the bottom plate (11) through the guide mechanism (03); and a fixing bolt hole is provided on the upper top plate (21).

4. A water pipe expansion riveting tool as claimed in claim 3, characterized in that: The guide mechanism (03) comprises two support blocks (31), two positioning pins (32), two limit blocks (33) and two positioning holes (34). The two support blocks (31) are arranged at both ends of the mounting seat (13) and fixed to the bottom plate (11) by screws. Positioning pins (32) are installed above the two support blocks (31). The two positioning pins (32) are arranged on both sides of the second linear bearing (24) and connected to the lower top plate (23) by screws.

5. A water pipe expansion riveting tool as claimed in claim 3, characterized in that: The riveting mechanism (04) comprises a first nitrogen spring (41), a stopper (42), a baffle (43), a guide column (44), a second nitrogen spring (45), a pin (46), a pin fixing block (47), a pressure plate (48) and a pressure block (49). The first nitrogen spring (41) is fixed to the bottom of the upper top plate (21) by screws, the baffle (43) is installed above the lower top plate (23), the guide column (44) passes through the second linear bearing (24), the stopper (42) is installed above the guide column (44) by screws, the pin fixing block (47) is screwed on the bottom of the guide column (44), the pin (46) is installed in the pin fixing block (47), the two second nitrogen springs (45) are symmetrically distributed on both sides of the lower top plate (23), the pressure plate (48) is installed below by screws, and the pressure block (49) is installed on the pressure plate (48).

6. A water pipe expansion riveting tool as claimed in claim 5, characterized in that: The ejector pin (46) can be disassembled and replaced through an ejector pin fixing block (47).

7. A water pipe expansion riveting tool as claimed in claim 2, characterized in that: The positioning component (15) is designed to be replaceable.

Images