A tube sheet mold with adjustable hole number

Abstract

The utility model relates to a pipe plate mould of adjustable hole number in mould field, including frame, upper die and lower die are installed on the same side of frame, upper die and lower die are all rotationally installed on the frame, install drive assembly no.

Description

Technical Field

[0001] This utility model relates to a tube sheet mold with an adjustable number of holes, and more particularly to a tube sheet mold with an adjustable number of holes for use in the mold field. Background Technology

[0002] A tube sheet is a circular steel plate with holes drilled through it, slightly larger than the outer diameter of the tubes. It's a round steel plate used in heat exchangers to hold the tubes in place and seal the medium. The tubes are inserted and welded into it for this purpose. During the production of heat exchanger tube sheets, specialized molds are used for punching.

[0003] A search revealed, for example, a heat exchanger tube sheet hole processing device disclosed in patent publication number CN220739196U. This device includes a base with a collection groove, mounting plates that slide left and right on the upper wall of the base, support columns mounted on the lower wall of the mounting plates, rollers mounted on the lower wall of the support columns, and mounting grooves on the upper walls of both mounting plates. A pair of mounting plates together support a mold, which is connected to the mounting grooves by bolts. This device can fix the tube sheet vertically and horizontally, providing good fixation and preventing displacement of the tube sheet during processing. It can perform punching processing on tube sheets of different models.

[0004] Based on the above search and combined with the existing technology, it was found that the number of holes in tube sheet molds similar to those disclosed above is usually fixed. In actual production, different projects have different requirements for the number of holes in tube sheets. When tube sheets with different numbers of holes need to be produced, the mold often needs to be remade, which not only increases production costs but also prolongs the production cycle and reduces production efficiency. Therefore, a tube sheet mold with an adjustable number of holes is proposed to improve the above problems. Utility Model Content

[0005] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that the number of holes in tube sheet molds is usually fixed, making it difficult to meet the tube sheet manufacturing requirements of varying hole numbers.

[0006] To solve the above problems, this utility model provides a tube sheet mold with an adjustable number of holes, including a frame, an upper mold and a lower mold installed on the same side of the frame, both of which are rotatably mounted on the frame, and a drive assembly for driving the upper mold and the lower mold to rotate is installed on the frame.

[0007] Both the upper and lower dies are regular polygons. The polygonal ends of the upper die are slidably mounted with punching seats along their radial directions. Multiple punching pins are fixed on the end face of the punching seat away from the axis, and the number of punching pins on each punching seat is different. A drive assembly 2 for driving the punching seats to perform punching action is installed on the frame.

[0008] The lower die has multiple die holes along its radial direction on each of its polygonal sides. The number of die holes on the multiple sides of the lower die is different for each side. The multiple punching posts located on the lower side of the upper die are set one-to-one with the multiple die holes located on the upper side of the lower die.

[0009] In the aforementioned tube sheet mold with adjustable hole count, the upper and lower molds are driven to rotate synchronously by a drive assembly. Different rotation angles can meet the punching quantity requirements of different tube sheets, making the punching operation more convenient and faster.

[0010] As a further improvement of this application, the drive assembly includes a drive motor, a transmission gear, a transmission sprocket, and a transmission chain;

[0011] The drive motor is mounted on the frame, and the output end of the drive motor is fixed coaxially with the transmission gear. There are two transmission sprockets, and the two transmission sprockets are fixed coaxially on the upper mold and the lower mold respectively. The transmission chain is connected between the two transmission sprockets.

[0012] One of the transmission sprockets has an integrally formed transmission tooth block on its inner surface, and the transmission gear meshes with the tooth block; the above transmission structure allows the upper and lower dies to rotate synchronously by the same angle.

[0013] As a further improvement to this application, the second drive component includes an electric push rod, a limit slider, and a combined slide rail;

[0014] A fixed base is installed on the frame. The electric push rod and the combined slide rail are both installed on the fixed base. The limit slider is fixed to the end face of the punching seat away from the punching column. The limit slider and the combined slide rail are slidably adapted.

[0015] As a further improvement to this application, the combined slide rail includes a fixed slide rail and a movable slide rail;

[0016] The fixed slide rail and the movable slide rail form a ring, and the fixed slide rail and the movable slide rail are not connected. The fixed slide rail is fixed to the fixed base, and the movable slide rail is fixed to the output end of the electric push rod. Both the fixed slide rail and the movable slide rail are adapted to slide with the limit slider. The combination of the fixed slide rail and the movable slide rail can drive the punching of multiple punching seats and accurately reset them with only one electric push rod.

[0017] As a further improvement of this application, a cylinder coaxially aligned with the lower die is fixed on the frame, and a collection tray is horizontally slidably installed at the upper center of the cylinder, the collection tray being connected to the die hole; this facilitates the centralized collection of waste materials falling off during the punching operation.

[0018] As a further improvement of this application, the multi-sided ends of the upper die are all integrally provided with baffles, and the baffles are provided with through holes adapted to the punching post; each time the punching post is reset upward, the baffles can be used to scrape off the impurities attached to the surface of the punching post, which is less likely to have an adverse effect on the punching post and subsequent punching.

[0019] As a further improvement of this application, the baffle is provided with a cavity, and lubricating oil is provided in the cavity. An oil hole connected to the cavity is provided on the inner wall of the through hole. During the up and down movement of the punching column, the lubricating oil can lubricate the surface of the punching column from the oil hole.

[0020] In summary, the transmission structure allows the upper and lower dies to rotate synchronously by the same angle, and different rotation angles can meet the punching requirements of different tube sheets, making the punching operation more convenient and faster. Through the coordinated design of fixed and moving slide rails, multiple punching seats can be driven and precisely reset using only one electric push rod, greatly simplifying the equipment structure and reducing manufacturing costs. Furthermore, each time the punching column resets upwards, a baffle can scrape away impurities adhering to its surface, minimizing adverse effects on the punching column and subsequent punching operations. During the up-and-down movement of the punching column, lubricating oil can be applied to its surface through the oil hole, better protecting the punching column and improving punching quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure under simulated punching conditions in the first embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure after simulated punching in the first embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the upper and lower molds in the first embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the structure of the combined slide rail in the first embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the upper mold in the second embodiment of this application.

[0026] Explanation of the labels in the diagram:

[0027] 1. Frame, 2. Upper mold, 21. Baffle, 2101. Through hole, 2102. Oil hole, 3. Lower mold, 301. Mold hole, 4. Drive motor, 5. Transmission gear, 6. Transmission sprocket, 7. Transmission chain, 8. Punching seat, 9. Punching column, 10. Collection drawer, 11. Fixed seat, 12. Fixed slide rail, 13. Moving slide rail, 14. Limiting slider, 15. Electric push rod, 16. Cylinder. Detailed Implementation

[0028] The following describes one embodiment of this application in detail with reference to the accompanying drawings.

[0029] Implementation method 1:

[0030] Figure 1-4The diagram shows a tube sheet mold with an adjustable number of holes, comprising a frame 1, an upper mold 2 and a lower mold 3 mounted on the same side of the frame 1.

[0031] The upper mold 2 and the lower mold 3 are rotatably mounted on the frame 1. Both the upper mold 2 and the lower mold 3 are regular polygons. The polygonal ends of the upper mold 2 are slidably mounted with punching seats 8 along their radial directions. Multiple punching posts 9 are fixed on the end face of the punching seat 8 away from the axis, and the number of punching posts 9 on each punching seat 8 is different.

[0032] Among them, the frame 1 is equipped with a drive assembly that drives the upper mold 2 and the lower mold 3 to rotate. Specifically, in conjunction with... Figure 3 The drive assembly includes a drive motor 4, a transmission gear 5, a transmission sprocket 6, and a transmission chain 7. The drive motor 4 is mounted on the frame 1, and the output end of the drive motor 4 is coaxially fixed with the transmission gear 5. There are two transmission sprockets 6, and the two transmission sprockets 6 are coaxially fixed on the upper mold 2 and the lower mold 3, respectively. The transmission chain 7 is connected between the two transmission sprockets 6. One of the transmission sprockets 6 has an integrally formed transmission tooth block on its inner surface, and the transmission gear 5 meshes with the tooth block.

[0033] The above-mentioned transmission structure enables the upper mold 2 and the lower mold 3 to rotate synchronously by the same angle. Specifically, the drive motor 4 drives the transmission gear 5 to rotate, the transmission gear 5 drives one of the transmission sprockets 6 to rotate, and finally the two transmission sprockets 6 rotate synchronously through the transmission chain 7, thereby realizing the synchronous rotation of the upper mold 2 and the lower mold 3.

[0034] Among them, the frame 1 is equipped with a second drive assembly that drives the punching seat 8 to perform the punching action. Specifically, in conjunction with... Figure 4 The second drive component includes an electric push rod 15, a limiting slider 14, and a combined slide rail. A fixed base 11 is installed on the frame 1. The electric push rod 15 and the combined slide rail are both installed on the fixed base 11. The limiting slider 14 is fixed to the end face of the punching seat 8 away from the punching post 9. The limiting slider 14 is slidably adapted to the combined slide rail. More specifically, the combined slide rail includes a fixed slide rail 12 and a movable slide rail 13. The fixed slide rail 12 and the movable slide rail 13 form a ring, and the fixed slide rail 12 and the movable slide rail 13 are not connected. The fixed slide rail 12 is fixed to the fixed base 11, and the movable slide rail 13 is fixed to the output end of the electric push rod 15. Both the fixed slide rail 12 and the movable slide rail 13 are slidably adapted to the limiting slider 14.

[0035] The aforementioned fixed slide rail 12 and movable slide rail 13 are configured to allow multiple punching seats 8 to be punched and precisely reset using only one electric push rod 15. Specifically, when the upper mold 2 and lower mold 3 are rotated by the aforementioned drive assembly, the electric push rod 15 causes the movable slide rail 13 and the fixed slide rail 12 to form a ring. At this time, the limiting slider 14 can slide flexibly between the fixed slide rail 12 and the movable slide rail 13. When the limiting slider 14 stops at the movable slide rail 13, punching can be performed. At this time, the electric push rod 15 moves the movable slide rail 13 and the limiting slider 14 up and down synchronously, so that the punching seat 8 carries the punching column 9 to perform the punching action. Since the electric push rod 15 moves the limiting slider 14 up and down synchronously, the punching seat 8 carrying the punching column 9 can be precisely reset.

[0036] Regarding lower mold 3, as follows Figure 3 As shown, each of the polygonal ends of the lower die 3 is provided with a plurality of die holes 301 along its radial direction. The number of die holes 301 on the plurality of ends of the lower die 3 is different. The plurality of punching posts 9 located on the lower side of the upper die 2 are provided in a one-to-one correspondence with the plurality of die holes 301 located on the upper side of the lower die 3.

[0037] In addition, to facilitate the collection of waste generated during punching, a cylinder 16 coaxially arranged with the lower die 3 is fixed on the frame 1. A collection tray 10 is horizontally slidably installed at the upper center of the cylinder 16. The collection tray 10 is connected to the die hole 301, which facilitates the centralized collection of waste falling off during punching operations.

[0038] Working principle: The upper die 2 and lower die 3 are driven to rotate synchronously to a suitable angle to meet the required number of punches for the tube sheet. Then, the tube sheet to be punched is placed on the upper end of the lower die 3 and fixed using a conventional fixing structure (not shown in the figure). Then, the punching seat 8 is driven by the electric push rod 15 to move the punching column 9 down to punch the tube sheet. The waste generated by punching falls into the collection drawer 10.

[0039] Compared to conventional molds with a single number of punches, this tube sheet mold with an adjustable number of holes uses a drive assembly to drive the upper mold 2 and the lower mold 3 to rotate synchronously. Different rotation angles can meet the punching requirements of different tube sheets, making the punching operation more convenient and faster. Furthermore, through the cooperation of the fixed slide rail 12 and the moving slide rail 13, multiple punching seats 8 can be driven to punch and accurately reset using only one electric push rod 15, which greatly simplifies the equipment structure and reduces manufacturing costs.

[0040] The second implementation method:

[0041] Figure 5As shown, each of the polygonal sides of the upper mold 2 is integrally provided with a baffle 21, and the baffle 21 is provided with a through hole 2101 that is adapted to the punching post 9; each time the punching post 9 is reset upward, the baffle 21 can be used to scrape off the impurities attached to the surface of the punching post 9, which is less likely to have an adverse effect on the punching post 9 and subsequent punching.

[0042] The baffle 21 has a cavity containing lubricating oil, and the inner wall of the through hole 2101 has an oil hole 2102 that communicates with the cavity. During the up-and-down movement of the punching column 9, the lubricating oil can lubricate the surface of the punching column 9 through the oil hole 2102, which better protects the punching column 9 and helps to improve the punching quality.

[0043] Of course, to facilitate the addition of lubricating oil, the cavities corresponding to multiple punching seats 8 can be connected. By utilizing the fluid flow characteristics, the lubricating oil can always be concentrated at the bottom of the upper die 2, thereby ensuring stable lubrication during the punching process.

[0044] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A tube sheet mold with an adjustable number of holes, comprising a frame (1), an upper mold (2) and a lower mold (3) mounted vertically on the same side of the frame (1), characterized in that: The upper mold (2) and the lower mold (3) are rotatably mounted on the frame (1), and the frame (1) is equipped with a drive assembly for driving the upper mold (2) and the lower mold (3) to rotate. Both the upper die (2) and the lower die (3) are regular polygons. The polygonal ends of the upper die (2) are slidably mounted with punching seats (8) along their radial directions. Multiple punching posts (9) are fixed on the end face of the punching seat (8) away from the axis. The number of punching posts (9) on each punching seat (8) is different. A second drive assembly for driving the punching seat (8) to perform punching action is installed on the frame (1). The lower die (3) has multiple die holes (301) on each of its polygonal sides along its radial direction. The number of die holes (301) on the multiple sides of the lower die (3) is different. The multiple punching posts (9) located on the lower side of the upper die (2) are arranged in a one-to-one correspondence with the multiple die holes (301) located on the upper side of the lower die (3).

2. The tube sheet mold with adjustable number of holes according to claim 1, characterized in that: The drive assembly includes a drive motor (4), a transmission gear (5), a transmission sprocket (6), and a transmission chain (7); The drive motor (4) is mounted on the frame (1). The output end of the drive motor (4) is coaxially fixed with the transmission gear (5). There are two transmission sprockets (6), and the two transmission sprockets (6) are coaxially fixed on the upper mold (2) and the lower mold (3) respectively. The transmission chain (7) is connected between the two transmission sprockets (6). One of the transmission sprockets (6) has an integrally formed transmission tooth block on its inner surface, and the transmission gear (5) meshes with the tooth block.

3. The tube sheet mold with adjustable number of holes according to claim 1, characterized in that: The second drive assembly includes an electric push rod (15), a limiting slider (14), and a combined slide rail; A fixed base (11) is installed on the frame (1). The electric push rod (15) and the combined slide rail are both installed on the fixed base (11). The limiting slider (14) is fixed to the end face of the punching seat (8) away from the punching column (9). The limiting slider (14) is slidably adapted to the combined slide rail.

4. A tube sheet mold with an adjustable number of holes according to claim 3, characterized in that: The combined slide rail includes a fixed slide rail (12) and a movable slide rail (13); The fixed slide rail (12) and the movable slide rail (13) form a ring, and the fixed slide rail (12) and the movable slide rail (13) are not connected. The fixed slide rail (12) is fixed to the fixed base (11), and the movable slide rail (13) is fixed to the output end of the electric push rod (15). Both the fixed slide rail (12) and the movable slide rail (13) are slidably adapted to the limiting slider (14).

5. A tube sheet mold with an adjustable number of holes according to claim 1, characterized in that: A cylinder (16) coaxially arranged with the lower mold (3) is fixed on the frame (1). A collection drawer (10) is horizontally slidably installed at the upper center of the cylinder (16). The collection drawer (10) is connected to the mold hole (301).

6. A tube sheet mold with an adjustable number of holes according to claim 1, characterized in that: The upper mold (2) is integrally provided with baffles (21) on all its multi-sided sides, and the baffles (21) are provided with through holes (2101) that are adapted to the punching post (9).

7. A tube sheet mold with an adjustable number of holes according to claim 6, characterized in that: The baffle (21) has a cavity, which is filled with lubricating oil. The inner wall of the through hole (2101) is provided with an oil hole (2102) that communicates with the cavity.

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