Sealing spin riveting device for heat exchanger adapter

Abstract

According to the sealing and spin riveting device for the heat exchanger adapter, the bottom of the limiting block extends towards the central axis of the workbench and is inclined, and by means of the design, the adapter can be accurately positioned and guided in the spin riveting process. The inclined bottom structure can better adapt to the appearance of the adapter, so that the adapter can be kept stable in the placing and working processes, the spin riveting quality problem caused by position deviation is reduced, and the spin riveting precision and consistency are effectively improved; a force sensor and a displacement sensor are installed on the upper side wall of the workbench so as to monitor the movement change in the spin riveting process in real time; through the structural design that the downward pressing tool is matched with the workbench, the acting force between the downward pressing tool and the workbench is smoothly transmitted, the reliability and durability of the device are improved, the installation block serves as the basis of the downward pressing tool, the stability and safety are improved through the oppositely-arranged limiting block, and meanwhile the operation convenience and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to riveting technical field, concretely is a kind of heat exchanger adapter sealing riveting device. BACKGROUND

[0002] In the field of chemical equipment, refrigeration and heating, and energy equipment, as a key component, the performance of heat exchanger plays a crucial role in the operating efficiency and safety of the entire system. The sealing assembly of heat exchanger adapter is one of the core links to ensure its normal operation. Under high temperature and high pressure working conditions, the adapter needs to achieve long-term stable sealing to ensure efficient heat exchange process and prevent leakage and other safety hazards caused by poor sealing. However, the existing riveting machine has many problems to be solved when applied to the sealing assembly of such adapter.

[0003] The lack of precision of traditional riveting equipment is a major problem currently faced. The limitations of its structural design and driving method result in uneven and inconsistent compression of the sealing surface during riveting assembly of the heat exchanger adapter. This uneven compression state makes the adapter prone to local sealing weak points when subjected to high temperature and high pressure conditions, greatly increasing the risk of leakage. Once leakage occurs, not only will it reduce the efficiency of the heat exchanger, but it may also cause serious safety accidents, resulting in significant economic losses for the enterprise.

[0004] Some enterprises have attempted to use gas-liquid pressure riveting machines to solve the above problems, such as the existing disclosed riveting machine (patent number CN217192382U), which adopts the technical scheme of including a base, a riveting assembly, and a lifting assembly, the base is provided with a guide rod; the riveting assembly is fixedly installed on the base; the lifting assembly includes a support power element and a mounting plate, the mounting plate is provided with a guide hole, the guide rod is slidably connected with the guide hole, and the support power element drives the mounting plate to approach the riveting assembly, but the applicant found that the effect of this scheme is not ideal. Although the gas-liquid pressure riveting machine improves the output of riveting force to some extent, due to the poor precision of its pressure control system, it cannot accurately control the pressure during the riveting process. This makes the riveting force fluctuate greatly during assembly, making it difficult to ensure uniform compression of the adapter sealing surface. SUMMARY

[0005] In view of the deficiencies in the above existing technology, the purpose of the present utility model is to provide a heat exchanger adapter sealing riveting device.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a heat exchanger adapter seals riveting device, include: down pressure frock and with down pressure frock cooperation workbench, down pressure frock includes: mounting block, opposite limit block on mounting block, wherein the bottom of the limit block extends towards the central axis of the workbench and is inclined, a force sensor and a displacement sensor are also installed on the workbench at the side wall.

[0007] As a preferred scheme of the present application, the bottom end of the limit block is also correspondingly provided with a rotating top disc, the bottom of the rotating top disc can move to abut with the workbench, and the limit block always leaves a gap with the workbench.

[0008] As a preferred scheme of the present application, a thimble is also installed on the down pressure frock, the thimble is arranged between the limit blocks and always separates from the rotating top disc.

[0009] As a preferred scheme of the present application, the workbench includes a mounting seat, a positioning block is arranged on the mounting seat, a positioning groove is arranged on the positioning block, an operating block is arranged in the positioning groove, and a positioning hole is arranged on the side of the operating block away from the mounting seat.

[0010] As a preferred scheme of the present application, a mounting groove is arranged on the mounting seat, and the positioning groove and the mounting groove are arranged perpendicularly in the same plane.

[0011] As a preferred scheme of the present application, the operating block includes a base and a processing block embedded in the base, and the positioning hole is arranged on the processing block.

[0012] As a preferred scheme of the present application, the force sensor is arranged on the positioning block, and the displacement sensor is arranged on the mounting seat.

[0013] Compared with the prior art, the utility model have the advantages that the bottom of the positioner extends to the middle axis of the workbench and is inclined, which can precisely position and guide the adapter during the spin riveting process. The inclined bottom structure can better adapt to the shape of the adapter, so that the adapter can be kept stable during placement and work, reducing the spin riveting quality problems caused by position deviation and effectively improving the spin riveting precision and consistency; the force sensor and the displacement sensor are installed on the side wall of the workbench, which can monitor the force and displacement changes during the spin riveting process in real time; the structure design of the lower pressing tool matched with the workbench makes the force transmission between the lower pressing tool and the workbench smooth, reduces the spin riveting error caused by unstable structure and improves the reliability and durability of the device. The installation block serves as the basis of the lower pressing tool, and the limit block arranged oppositely ensures the stability and safety of the adapter during the spin riveting process. At the same time, this structure layout also facilitates the operator to place and take out the adapter, improving the convenience and efficiency of operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 It is the main structure schematic diagram of the utility model;

[0016] Figure 2 It is the top view of the installation block in the utility model;

[0017] Figure 3 It is Figure 2 the section view of A-A in it;

[0018] Figure 4 It is the schematic diagram of the installation limit block in one side of the installation block in the utility model and cooperation with the thimble;

[0019] Figure 5 It is the installation position schematic diagram of the thimble in the utility model;

[0020] Figure 6 It is the specific structure schematic diagram of the workbench in the utility model.

[0021] In the drawing: 1, lower pressing tool;11, installation block;12, limit block;13, rotating top disc;14, thimble;2, workbench;21, mounting seat;211, installation groove;22, positioning block;222, positioning groove;23, operating block;231, base;232, processing block;24, positioning hole;3, force sensor;4, displacement sensor. DETAILED DESCRIPTION

[0022] In order to make the technical means, creation characteristics, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] Because the traditional spin riveting equipment has the problem of insufficient precision in the adapter sealing surface compression process, the sealing surface compression is uneven, and there is a high risk of leakage. At the same time, the automation degree of the traditional equipment is low, and in the face of various models and different lengths of adapters, the change process is complex, frequent manual intervention is required, and the production efficiency and product quality are affected. In addition, the existing gas-liquid pressure spin riveting machine not only has poor precision and low automation degree, but also cannot realize rapid changeover, the gas-liquid pressure control is not accurate, the position is fixed, and manual adjustment is required before each use, which is difficult to meet the requirements of modern industrial production for high efficiency, precision and flexibility.

[0024] As shown in Figures 1-6 To solve the problems of insufficient precision, low automation degree and complex changeover in the adapter sealing assembly process, improve production efficiency and product quality, and reduce the risk of leakage, the applicant has developed a heat exchanger adapter sealing spin riveting device, which solves the problem. The solution includes: a lower pressing tool 1 and a workbench 2 cooperating with the lower pressing tool 1. After the spin riveting assembly is completed, the system can integrate the copper brazing process to reinforce the sealing surface twice, further prevent leakage, improve the overall sealing performance, and the lower pressing tool 1 includes: a mounting block 11, the mounting block 11 is provided with a limiting block 12 opposite to each other, wherein the bottom of the limiting block 12 extends towards the central axis of the workbench 2 and is inclined, wherein the top of the limiting block 12 extends vertically to the end and then extends obliquely, and the length ratio of the vertical section to the inclined section is 1:1-3, the inner angle between the vertical section and the inclined section is 120°-185°, and the force sensor 3 and the displacement sensor 4 are also installed on the side wall of the workbench 2. A closed-loop control system based on force-speed and displacement feedback is adopted to accurately control the force, speed and displacement parameters in the spin riveting process, so that the precision of the spin riveting assembly reaches ±0.02mm, ensuring uniform compression of the adapter sealing surface and significantly reducing the risk of leakage. The sensors can all use RS485 communication interface to facilitate connection with the automatic control system. In this application, the force sensor 3 with the following model HBM P10 is also included, the range is 0-1000N, the accuracy is ±0.1%, the displacement sensor 4 with the following model MTS Temposonics E series is used, the measurement range is 0-50mm, and the resolution can reach 0.01mm.

[0025] The implementation principle of the above technical scheme is that the lower pressing tool 1 forms an integral structure with the limit stop through the mounting block 11, the inclined bottom of the limit stop is designed to utilize its shape characteristics to exert a certain restriction and guiding force on the adapter during spin riveting, so that the adapter can be accurately placed on the workbench 2 and kept stable. The force sensor 3 and the displacement sensor 4 are fixed on the side wall of the workbench 2 through a specific mounting mode, and they can sense and record the force and displacement changes generated during spin riveting in real time when the spin riveting operation starts.

[0026] The bottom end of the limit block 12 is also correspondingly provided with a rotating top disc 13, the bottom of the rotating top disc 13 can be moved to abut against the workbench 2, and the limit block 12 always leaves a gap with the workbench 2, the rotating top disc 13 is installed at the bottom end of the limit stop through a corresponding mounting structure, and the bottom movability is realized through mechanical transmission or pneumatic transmission. During spin riveting, the rotating top disc 13 is controlled to move as needed, so that the bottom abuts against the workbench 2, and the adapter is provided with appropriate pressure. The gap between the limit block 12 and the workbench 2 is realized through accurate size design and installation adjustment, which not only ensures the positioning effect of the limit block 12 on the adapter, but also avoids unnecessary friction and interference with the workbench 2, and ensures the smooth progress of the spin riveting process.

[0027] The lower pressing tool 1 is also provided with a thimble 14, the specific size is adjusted according to the workpiece spin riveting hole diameter and depth, and the thimble 14 plays a key role in the spin riveting device. The thimble 14 is arranged between the limit blocks 12 and always separated from the rotating top disc 13, and can position and support the inside or specific part of the adapter during spin riveting, prevent the adapter from deforming or shifting during spin riveting, and ensure the accuracy and quality of spin riveting. The thimble 14 is arranged between the limit blocks 12 and always separated from the rotating top disc 13, the thimble 14 is fixed on the lower pressing tool 1 through a specific mounting mode, and the position and size are accurately designed according to the structure of the adapter and the spin riveting requirement. During spin riveting, the thimble 14 contacts the inside or specific part of the adapter to provide stable support force, while keeping separated from the rotating top disc 13 to avoid mutual interference and ensure the smooth progress of the spin riveting operation.

[0028] The specific structure of the workbench 2 provides a more accurate way for the adapter to be placed and positioned. The positioning block 22 on the mounting seat 21 and the positioning groove 222 can preliminarily position the adapter, and the positioning hole 24 on the operation block 23 further accurately determines the position of the adapter, ensuring that the adapter is accurately positioned during the spin riveting process, improving the quality and consistency of spin riveting. The workbench 2 comprises a mounting seat 21, a positioning block 22 is arranged on the mounting seat 21, a positioning groove 222 is formed in the positioning block 22, and an operation block 23 is arranged in the positioning groove 222. A positioning hole 24 is formed in the side of the operation block 23 away from the mounting seat 21. The mounting seat 21 serves as the basic structure of the workbench 2, the positioning block 22 is fixed on the mounting seat 21 by a specific mounting method, and the shape and size of the positioning groove 222 are designed according to the shape of the adapter. The operation block 23 is placed in the positioning groove 222 and preliminarily positioned by the limiting action of the positioning groove 222. The positioning hole 24 is formed in the operation block 23 according to the specific structure of the adapter. After the adapter is placed on the operation block 23, accurate positioning is achieved through the positioning hole 24.

[0029] An installation groove 211 is formed in the mounting seat 21, and the positioning groove 222 is vertically arranged in the same plane as the installation groove 211. The installation groove 211 and the positioning groove 222 are vertically arranged in the same plane. This layout optimizes the space utilization of the workbench 2, making it more convenient and stable to install the operation block 23 and place the adapter. At the same time, the vertical arrangement also helps to improve the force transmission efficiency during the spin riveting process, reduces unnecessary energy loss, and improves the quality of spin riveting. This layout enables the operation block 23 to be stably installed in the installation groove 211, and the adapter to be accurately placed under the combined action of the positioning groove 222 and the positioning hole 24.

[0030] The operation block 23 comprises a base 231 and a processing block 232 embedded in the base 231, and the positioning hole 24 is formed in the processing block 232. This modular design makes the operation block 23 flexible and replaceable. When the structure or size of the adapter changes, only the corresponding processing block 232 needs to be replaced, without the need to replace the entire operation block 23, reducing production costs and maintenance difficulty.

[0031] The base 231 serves as the basic structure of the operation block 23 and is fixed in the positioning groove 222 of the mounting seat 21 by a specific mounting method. The processing block 232 is designed and manufactured according to the specific structure and positioning requirements of the adapter, and is embedded in the base 231 by a certain connection method (such as bolt connection, buckle connection, etc.). The positioning hole 24 is accurately formed in the processing block 232 to ensure that the adapter can be accurately placed on the operation block 23.

[0032] The force sensor 3 is arranged on the positioning block 22, and the displacement sensor 4 is arranged on the mounting seat 21, in the spin riveting process, the sensors can sense the force and displacement change between the spin riveting head and the adapter in real time, and transmit the electric signal to the control system, and the control system adjusts and controls the spin riveting process in real time according to the signal fed back by the sensor.

[0033] It should be noted that the external rotary device in the application is preferably a spin riveting head integrated high-precision servo motor (torque range 0.05-3 N·m, repeat positioning accuracy ±0.005 mm), which can monitor the spin riveting process in real time through the force sensor 3 and the displacement sensor 4, and the application adopts symmetrical spin riveting of double spin riveting heads, which will not cause the adapter to expand and crack, and the processing surface is smooth and beautiful,

[0034] The lower tooling and the upper tooling can be quickly replaced, the adapter with different outer diameters can be used, manual intervention is not required for calibration, the workpiece does not need to be clamped, and one-key processing can be realized only by placing, the applicant uses the device to produce, the assembly time of a single piece is less than or equal to 25 seconds, the good product rate is greater than or equal to 99.8%, the quick replacement time is not more than 1 minute, no debugging time is required, the system is set and corresponding replacement can be realized.

[0035] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the application and are not limited, although the application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the application can be modified or replaced, without departing from the purpose and scope of the technical solutions of the application, which should be covered in the scope of the claims of the application.

Claims

1. A heat exchanger adapter seal swage apparatus, characterized by, Include: Down press tooling (1) and worktable (2) matched with the down press tooling (1), the down press tooling (1) includes: mounting block (11), the opposite limit block (12) is arranged on the mounting block (11), wherein the bottom of the limit block (12) extends towards the central axis of the worktable (2) and is inclined, and a force sensor (3) and a displacement sensor (4) are further installed on the worktable (2) at the edge wall.

2. A heat exchanger adapter seal swage device as claimed in claim 1, wherein, The bottom end of the limit block (12) is further provided with a rotating top disc (13), the bottom of the rotating top disc (13) can move to abut with the worktable (2), and the limit block (12) always leaves a gap with the worktable (2).

3. A heat exchanger adapter seal swage device as claimed in claim 2, wherein, A thimble (14) is further installed on the down press tooling (1), the thimble (14) is arranged between the limit blocks (12) and always separated from the rotating top disc (13).

4. A heat exchanger adapter seal swage device as claimed in claim 3, wherein, The worktable (2) includes a mounting seat (21), a positioning block (22) is arranged on the mounting seat (21), a positioning groove (222) is formed in the positioning block (22), and an operation block (23) is arranged in the positioning groove (222), and a positioning hole (24) is formed in the side of the operation block (23) away from the mounting seat (21).

5. A heat exchanger adapter seal swage device as claimed in claim 4, wherein, An installation groove (211) is formed in the mounting seat (21), and the positioning groove (222) and the installation groove (211) are arranged perpendicularly in the same plane.

6. A heat exchanger adapter seal swage apparatus as defined in claim 4 wherein, The operation block (23) includes a base (231) and a processing block (232) embedded in the base (231), and the positioning hole (24) is formed in the processing block (232).

7. A heat exchanger adapter seal swage apparatus as defined in claim 4 wherein, The force sensor (3) is arranged on the positioning block (22), and the displacement sensor (4) is arranged on the mounting seat (21).

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