A tube sheet punching device for heat exchanger

Abstract

The utility model discloses a pipe plate punching device for heat exchanger relates to the cooling or lubrication technical field of machine tool, the utility model discloses a processing box is provided with clamping part in the processing box, both sides of processing box are provided with longitudinal shift component, longitudinal shift component top is provided with horizontal shift component, the front side of horizontal shift component is provided with vertical shift component, vertical shift component one side is provided with punch part, and punch part bottom is provided with collection mechanism, and collection mechanism includes the folding board fixedly connected at punch part bottom, the recovery board fixedly connected at the bottom of folding board, sets up the recovery pipe at recovery board one side and sets up the filter assembly in recovery board inside. The utility model discloses through the self -adaptation of deformable sealing structure and close collection of pressure combination, effectively blocks the splashing path of cooling liquid, not only reduces the waste and environmental pollution of cooling liquid, also has improved the security of work area.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool cooling or lubrication technology, and in particular relates to a tube sheet punching device for heat exchangers. Background Technology

[0002] The tube sheet punching device for heat exchangers is a key piece of equipment used to process precise tube holes on the tube sheet of a heat exchanger. Its function is to punch holes in the tube sheet in batches for the heat exchange tubes to pass through. The processing quality directly determines the assembly accuracy of the heat exchange tubes and the sealing performance of the heat exchanger. In order to improve the punching quality and extend the die life, it is generally necessary to continuously spray cooling liquid to cool and lubricate the punching and processing area during the punching process.

[0003] Existing tube sheet punching devices for heat exchangers still have some problems during use. For example, when the punching drill bit enters the tube sheet to a certain depth, the hole itself forms a semi-enclosed space. The continuously injected cooling fluid accumulates in the hole and is disturbed by the rotation of the drill bit and the chip removal, causing it to splash violently outward from the hole. This not only wastes the cooling fluid and pollutes the working environment, but the splashed impurities may also endanger the safety of operators around the equipment and cause inconvenience for subsequent on-site cleanup.

[0004] To address these issues, we provide a tube sheet punching device for heat exchangers. Utility Model Content

[0005] The purpose of this utility model is to provide a tube sheet punching device for heat exchangers. Through the cooperation of the collection mechanism and the reset mechanism, it solves the problem in the prior art of tube sheet punching devices for heat exchangers where cooling liquid splashes violently outward from the orifice, causing waste of cooling liquid and pollution of the working environment.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a tube sheet punching device for heat exchangers, comprising a processing box, a clamping component inside the processing box, longitudinal moving components on both sides of the processing box, a transverse moving component at the top of the longitudinal moving components, a vertical moving component in front of the transverse moving components, a punching component on one side of the vertical moving components, and a collecting mechanism at the bottom of the punching component. The collecting mechanism includes a folding plate fixedly connected to the bottom of the punching component, a recovery plate fixedly connected to the bottom of the folding plate, a recovery pipe on one side of the recovery plate, and a filter assembly inside the recovery plate. A reset mechanism is provided on one side of the folding plate, the reset mechanism including a support plate fixedly connected to one side of the recovery plate, a limiting plate fixedly connected to one side of the punching component, and a reset assembly between the support plate and the limiting plate.

[0008] The present invention is further configured such that the material of the folding plate is rubber, and the cross-sectional shape of the folding plate is bow-shaped.

[0009] The present invention is further configured such that the filtration assembly includes a collection box disposed inside the recycling plate and a filter screen disposed inside the collection box, and the recycling pipe is connected to the collection box.

[0010] The present invention is further configured such that mounting plates are fixedly connected to both sides of the collection box, and mounting bolts are threadedly connected inside the mounting plates.

[0011] The present invention is further configured such that the reset assembly includes a limiting rod fixedly connected to the top of the support plate and a spring sleeved on the surface of the limiting rod. The limiting plate has a limiting through hole adapted to the limiting rod inside. An anti-detachment plate is fixedly connected to the top of the limiting rod, and the anti-detachment plate is located at the top of the limiting plate.

[0012] The present invention is further configured such that the clamping component consists of a hydraulic cylinder and a clamping plate, the longitudinal movement component consists of a longitudinal movement box, a drive motor and a screw assembly, and the transverse movement component consists of a transverse movement box, a servo motor and a precision linear guide.

[0013] The present invention is further configured such that the vertical moving component consists of a vertical moving box, a servo electric cylinder and a guide column, and the punching component consists of a punching box, a servo motor, a punching drill and a cooling pipe.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model achieves effective collection and splash prevention of cooling liquid through the coordinated movement of the folding plate, recovery plate, and filter assembly in the collection mechanism. When the vertical moving component drives the punching component to move down for punching, the rubber folding plate fixed at the bottom of the punching component first contacts the tube sheet surface and forms a sealed enclosure. As the punching drill continues to penetrate, the folding plate is gradually compressed and folded under pressure, always maintaining a dynamic seal on the orifice. The splashed cooling liquid is confined within the sealed space formed by the folding plate and the recovery plate. Subsequently, the filter screen initially separates and cuts impurities, and the filtered cooling liquid is discharged and recycled through the recovery pipe. Through the adaptive compression and sealed collection of the deformable sealing structure, the splash path of the cooling liquid is effectively blocked, which not only reduces cooling liquid waste and environmental pollution, but also improves the safety of the working area.

[0016] 2. This utility model achieves automatic reset of the folded plate after punching through the cooperation of the spring, limiting rod, and support plate in the reset mechanism, ensuring the continuous operation capability of the device. After punching is completed, the vertical moving component drives the punching component to move upward. At this time, the compressed spring in the reset assembly releases its elastic potential energy, pushing the support plate and the connected recovery plate downward, so that the folded plate in the folded state is extended back to the initial position. The sliding cooperation between the limiting rod and the limiting plate ensures that the reset process is smooth and does not deviate, so that the device can return to the sealed and ready state after each punching without manual intervention, effectively improving the operating efficiency of the equipment.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of a tube sheet punching device for a heat exchanger.

[0020] Figure 2 This is a rear view of a folded plate in a tube sheet punching device for a heat exchanger.

[0021] Figure 3 This is a cross-sectional view of a folded plate and a recovery plate in a tube sheet punching device for a heat exchanger.

[0022] Figure 4 This is a structural diagram of the filter assembly in a tube sheet punching device for a heat exchanger.

[0023] Figure 5 This is a structural diagram of the reset mechanism in a tube sheet punching device for a heat exchanger.

[0024] In the attached diagram: 1. Processing box; 2. Clamping component; 3. Longitudinal movement component; 4. Lateral movement component; 5. Vertical movement component; 6. Punching component; 7. Collection mechanism; 71. Folding plate; 72. Recycling plate; 73. Recycling pipe; 74. Filter assembly; 741. Collection box; 742. Filter screen; 8. Reset mechanism; 81. Support plate; 82. Limiting plate; 83. Reset assembly; 831. Limiting rod; 832. Spring; 9. Mounting plate; 10. Mounting bolt; 11. Anti-detachment plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1 Please see Figures 1-5 This utility model is a tube sheet punching device for heat exchangers, including a processing box 1, a clamping component 2 inside the processing box 1, longitudinal moving components 3 on both sides of the processing box 1, a transverse moving component 4 on the top of the longitudinal moving component 3, a vertical moving component 5 on the front side of the transverse moving component 4, a punching component 6 on one side of the vertical moving component 5, and a collecting mechanism 7 at the bottom of the punching component 6. The collecting mechanism 7 includes a folding plate 71 fixedly connected to the bottom of the punching component 6, a recovery plate 72 fixedly connected to the bottom of the folding plate 71, a recovery pipe 73 on one side of the recovery plate 72, and a filter assembly 74 inside the recovery plate 72. A reset mechanism 8 is provided on one side of the folding plate 71. The reset mechanism 8 includes a support plate 81 fixedly connected to one side of the recovery plate 72, a limiting plate 82 fixedly connected to one side of the punching component 6, and a reset assembly 83 between the support plate 81 and the limiting plate 82.

[0027] As a preferred embodiment of the above, the collection mechanism 7 achieves the shielding and recovery of cooling liquid through the synergistic action of the folding plate 71, the recovery plate 72, and the filter assembly 74. When the punching component 6 moves down to punch, the bow-shaped rubber folding plate 71 fixed at its bottom first contacts the surface of the tube sheet to form a sealed enclosure. As the punching continues to penetrate deeper, the folding plate 71 is gradually compressed and folded under pressure, always maintaining the shielding state of the orifice. The splashed cooling liquid is confined in the closed space formed by the folding plate 71 and the recovery plate 72. After being initially separated by the filter screen 742, it is recovered through the recovery pipe 73. Through the dynamic sealing mechanism of the deformable folding plate 71, the splash path of the cooling liquid is effectively blocked, and the source collection is realized. Combined with the elastic reset function of the spring 832 of the reset mechanism 8, it can automatically return to the initial state after completing a single punching, so that the device can continuously block the cooling liquid.

[0028] Example 2 Please see Figures 1-5Based on Embodiment 1, the folding plate 71 is made of rubber, and its cross-sectional shape is bow-shaped. The filter assembly 74 includes a collection box 741 disposed inside the recycling plate 72, and a filter screen 742 disposed inside the collection box 741. The recycling pipe 73 communicates with the collection box 741. Mounting plates 9 are fixedly connected to both sides of the collection box 741. Mounting bolts 10 are threadedly connected inside the mounting plates 9. Mounting through holes adapted to the mounting bolts 10 are opened inside both the recycling plate 72 and the mounting plate 9. The reset assembly 83 includes a limiting device fixedly connected to the top of the support plate 81. The limit rod 831 and the spring 832 sleeved on the surface of the limit rod 831 are provided. The limit plate 82 has a limit through hole that matches the limit rod 831. The top of the limit rod 831 is fixedly connected to the anti-detachment plate 11, which is located on the top of the limit plate 82. The clamping component 2 consists of a hydraulic cylinder and a clamping plate. The longitudinal movement component 3 consists of a longitudinal movement box, a drive motor and a screw pair. The transverse movement component 4 consists of a transverse movement box, a servo motor and a precision linear guide. The vertical movement component 5 consists of a vertical movement box, a servo electric cylinder and a guide column. The punching component 6 consists of a punching box, a servo motor, a punching drill and a cooling pipe.

[0029] As a preferred embodiment of the above, the folding plate 71 forms a surrounding state at the bottom of the punching part 6, preventing the cooling liquid sprayed during punching from splashing outwards. Its foldable design allows it to fold and retract as the punching part 6 moves downwards during continuous punching. The filter assembly 74 filters out punching impurities mixed in the cooling liquid, and the filtered cooling liquid is discharged outwards through the recovery pipe 73. The filter assembly 74 is fixed in the recovery plate 72 by the mounting plate 9 and mounting bolts 10. The reset assembly 83 compresses the spring 832 when the folding plate 71 retracts upwards. After punching is completed and the punching part 6 resets upwards, the folding plate 71 is reset by the reset action of the spring 832.

[0030] The working principle of this utility model is as follows: First, the clamping component 2 drives the clamping plate through a hydraulic cylinder to firmly fix the heat exchanger tube sheet inside the processing box 1. Then, the longitudinal moving component 3 drives the punching component 6 to move longitudinally through the drive motor and screw pair. The transverse moving component 4 adjusts the transverse position of the punching component 6 through the servo motor and precision linear guide rail. The vertical moving component 5 controls the punching component 6 to move vertically downward through the servo electric cylinder and guide column. The servo motor in the punching component 6 drives the punching drill to rotate. At the same time, the cooling pipe sprays cooling liquid into the processing area. During the downward movement of the punching drill, the rubber folding plate 71 fixed at the bottom of the punching component 6 first contacts the surface of the tube sheet to form a sealed enclosure. As the punching drill continues to penetrate into the tube sheet, the folding plate 71 is gradually compressed and folded under pressure, but always maintains the state of shielding the orifice. The splashed cooling liquid is confined in the sealed space formed by the folding plate 71 and the recovery plate 72, and impurities are initially separated by the filter screen 742 in the filter assembly 74. The filtered cooling liquid is discharged through the recovery pipe 73 to achieve recycling.

[0031] After punching is completed, the vertical moving component 5 drives the punching component 6 to move upward and reset. During the upward movement of the punching component 6, the elastic potential energy stored in the spring 832 in the reset component 83 due to previous compression is released, pushing the support plate 81 to move downward, causing the recovery plate 72 and the folding plate 71 to return to their initial extended state. The cooperation between the limiting rod 831 and the limiting plate 82 ensures the stability of the reset process, and the anti-detachment plate 11 prevents the limiting rod 831 from detaching.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tube sheet punching device for heat exchangers, comprising a processing box (1), characterized in that: The processing box (1) is equipped with a clamping component (2), and both sides of the processing box (1) are equipped with longitudinal moving components (3). The top of the longitudinal moving component (3) is equipped with a transverse moving component (4), the front side of the transverse moving component (4) is equipped with a vertical moving component (5), and one side of the vertical moving component (5) is equipped with a punching component (6). The bottom of the punching component (6) is provided with a collection mechanism (7), which includes a folding plate (71) fixedly connected to the bottom of the punching component (6), a recycling plate (72) fixedly connected to the bottom of the folding plate (71), a recycling pipe (73) provided on one side of the recycling plate (72), and a filter assembly (74) provided inside the recycling plate (72). A reset mechanism (8) is provided on one side of the folding plate (71). The reset mechanism (8) includes a support plate (81) fixedly connected to one side of the recycling plate (72), a limiting plate (82) fixedly connected to one side of the punching component (6), and a reset assembly (83) disposed between the support plate (81) and the limiting plate (82).

2. The tube sheet punching device for heat exchangers according to claim 1, characterized in that: The material of the folding plate (71) is rubber, and the cross-sectional shape of the folding plate (71) is bow-shaped.

3. The tube sheet punching device for heat exchangers according to claim 1, characterized in that: The filter assembly (74) includes a collection box (741) disposed inside the recycling plate (72) and a filter screen (742) disposed inside the collection box (741), and the recycling pipe (73) is connected to the collection box (741).

4. The tube sheet punching device for heat exchangers according to claim 3, characterized in that: The collection box (741) is fixedly connected to both sides with mounting plates (9), and the mounting plates (9) are threaded with mounting bolts (10).

5. The tube sheet punching device for heat exchangers according to claim 1, characterized in that: The reset assembly (83) includes a limiting rod (831) fixedly connected to the top of the support plate (81) and a spring (832) sleeved on the surface of the limiting rod (831). The limiting plate (82) has a limiting through hole adapted to the limiting rod (831) inside. An anti-detachment plate (11) is fixedly connected to the top of the limiting rod (831). The anti-detachment plate (11) is located at the top of the limiting plate (82).

6. The tube sheet punching device for heat exchangers according to claim 1, characterized in that: The clamping component (2) consists of a hydraulic cylinder and a clamping plate, the longitudinal movement component (3) consists of a longitudinal movement box, a drive motor and a screw pair, and the transverse movement component (4) consists of a transverse movement box, a servo motor and a precision linear guide.

7. The tube sheet punching device for heat exchangers according to claim 1, characterized in that: The vertical moving component (5) consists of a vertical moving box, a servo electric cylinder and a guide column, and the punching component (6) consists of a punching box, a servo motor, a punching drill and a cooling pipe.

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