Perforating device for internal bending of bent pipe

Abstract

The utility model discloses a punching device for an inner bend of a bent pipe, which comprises a base, a positioning die is arranged on the base, a matching groove for placing a pipe is arranged on the side face of the positioning die, and a punching needle piece capable of sliding relative to the positioning die is arranged in the positioning die. The positioning die is provided with a punching needle hole in the groove wall of the matching groove, the punching needle piece is provided with a punching needle head capable of penetrating out of the punching needle hole in the sliding process of the punching needle piece, and the positioning die is connected with a driving structure used for driving the punching needle piece to slide so that the punching needle head can penetrate out of the punching needle hole to punch the pipe. The utility model aims to overcome the defects in the prior art, and provides the punching device for the inner bend of the bent pipe, which is accurate in positioning, convenient and fast to process, high in processing precision and high in processing efficiency.

Description

Technical Field

[0001] The utility model specifically relates to a punching device for the inner bend of a bent pipe. Background Art

[0002] In the metal processing industry, especially in the field of pipe processing, pipe bending is a common processing technology used to bend straight pipes into required shapes. In some application scenarios, it is necessary to punch holes at the inner bend of the bent pipe for subsequent installation of accessories or other processes. However, traditional punching methods often require two processes. First, the straight pipe is processed into a bent pipe, and then holes are opened on the bent pipe. However, it is difficult to accurately punch holes at the inner bend of the bent pipe by this traditional processing method. The main reasons include: 1. Difficult positioning. Since the pipe will deform during the bending process, it is very difficult to accurately determine the specific position of the inner bend; 2. Inconvenient operation. Traditional punching equipment is often not applicable to bent pipes. Especially when punching holes at the bent part of the pipe, specially designed tools or equipment are required to complete the operation; 3. Precision problems. When punching holes at the inner bend, if the operation is improper, it is easy to cause the position of the hole to shift or the hole diameter to be inaccurate, affecting the final quality of the product; 4. Processing efficiency. Traditional processing methods may require multiple manual adjustments and calibrations, which not only consume time but also increase production costs. Therefore, it is difficult to process high-precision holes at the inner bend of the bent pipe using traditional processing equipment.

[0003] The present utility model is precisely produced based on the above deficiencies. Summary of the Utility Model

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art and provide a punching device for the inner bend of a bent pipe with accurate positioning, convenient processing, high processing precision, and high processing efficiency.

[0005] The utility model is realized through the following technical solutions:

[0006] A punching device for the inner bend of a bent pipe includes a base. A positioning die is provided on the base. A matching groove for placing the pipe is provided on the side of the positioning die. A punch member capable of sliding relative to it is provided inside the positioning die. A punch hole is provided on the groove wall of the matching groove of the positioning die. A punch head capable of passing through the punch hole during the sliding process of the punch member is provided on the punch member. The positioning die is connected with a driving structure for driving the punch member to slide so that the punch head passes through the punch hole to punch the pipe.

[0007] For the punching device for the inner bend of a bent pipe as described above, a clamping structure for pressing the pipe towards the matching groove is further provided on the base.

[0008] As described above, the punching device for the inner bend of the bent pipe, the driving structure includes a sliding part slidably connected to the positioning mold, a first driving device connected to the positioning mold and capable of pushing the sliding part to slide, the sliding part is provided with a first matching surface set obliquely, and the punching needle part is provided with a second matching surface that abuts against the first matching surface, so that the sliding part can push the punching needle part to slide when it slides.

[0009] As described above, the punching device for the inner bend of the bent pipe is provided with a first sliding cavity in the positioning mold, the sliding member is arranged in the first sliding cavity and can slide in the first sliding cavity, the positioning mold is also provided with a second sliding cavity connected to the first sliding cavity, the punch needle member is arranged in the second sliding cavity and can slide in the second sliding cavity, the punch needle hole is connected to the second sliding cavity so that the punch needle head can pass through the punch needle hole when the punch needle member slides.

[0010] As described above, in the punching device for inward bending of a curved pipe, the punching needle member is provided with a mounting groove for the sliding member to pass through, and the second matching surface is arranged in the mounting groove.

[0011] As described above, the punching device for the inner bend of the bent pipe, the positioning mold is composed of a mold body and a mold assembly plate, the mold body has a concave cavity, the mold assembly plate is connected to the mold body and fills the concave cavity, the second sliding cavity is arranged on the mold body, and the mold body has an opening at the concave cavity that is connected to the second sliding cavity for installing a punching needle part, and when the mold assembly plate is connected to the mold body, the mold assembly plate seals the opening.

[0012] As described above, the punching device for inward bending of bent pipes, the mold body is cylindrical and the concave cavity is provided on the cylindrical surface, the cylindrical surface of the mold body is provided with an annular arc groove section, the mold assembly plate is provided with a straight groove section tangent to the arc groove section, the arc groove section and the straight groove section are connected to form the matching groove, the clamping block is provided with a matching groove on the side close to the positioning mold, when the clamping block and the positioning mold are brought close to each other, the matching groove and the matching groove are closed to form a channel matching the shape of the pipe.

[0013] As described above, the punching device for inner bending of bent pipes, the clamping structure includes a sliding seat slidably connected to the base, and a second driving device for driving the sliding seat to slide toward the positioning mold, and the sliding seat is provided with a clamping block that can abut against the pipe when it slides toward the positioning mold.

[0014] As described above, in the punching device for inner bending of curved pipes, the positioning die is connected with a mounting seat, the first driving device is arranged on the mounting seat, and the mounting seat is provided with a sliding hole for the output shaft of the first driving device to pass through.

[0015] As described above, in the punching device for inward bending of curved pipes, a connecting piece capable of sliding in the sliding hole is provided in the sliding hole of the mounting seat, one end of the connecting piece is connected to the output shaft of the first driving device, and the other end of the connecting piece is connected to the sliding piece.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The punching device for inner bending of a pipe of the utility model wraps the pipe material through a matching groove, and then the punching needle head passes through the punching needle hole of the matching groove to punch a hole inside the bending part of the pipe material in the matching groove. The punching position can be accurately set to realize the precise punching function. At the same time, the deformation of the pipe material is limited by the groove wall of the matching groove, so that the cross section of the pipe material is difficult to deform, thereby preventing deformation from occurring during the punching process and affecting the processing accuracy. The punching mechanism of this scheme has a simple structure and is convenient to operate, thereby improving the processing efficiency. In order to improve the accuracy, the punching device for inner bending of a pipe of the utility model is also provided with a clamping structure for pressing the pipe material toward the matching groove. A matching groove 81 is provided on the side close to the positioning mold by the pressing block. The matching groove and the matching groove are combined to form a channel matching the shape of the pipe material. In this way, near the punching position, the pipe material is restricted in the channel, so that it is extremely difficult to deform radially during the punching process, thereby ensuring that the shape of the processing process is not changed, and at the same time preventing defects such as material deformation and cracking caused by the punching process, thereby ensuring the processing accuracy and product quality.

[0018] The driving structure of the utility model includes a sliding part slidably connected to a positioning mold, and a first driving device connected to the positioning mold and capable of pushing the sliding part to slide. The first mating surface of the sliding part abuts against and fits on the second mating surface of the punching needle part, so that the sliding part can push the punching needle part to slide when it slides, thereby realizing the driving of the punching needle part; in addition, the inclination angle of the first mating surface can also be set so that the sliding part has a greater torque when pushing the punching needle part, thereby increasing the impact force of the punching needle part and saving the output power of the first driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of a punching device for inner bending of a curved pipe according to the utility model;

[0020] Figure 2 It is a partial cross-sectional schematic diagram of a punching device for inner bending of a curved pipe according to the utility model;

[0021] Figure 3 yes Figure 2 A magnified view of point A;

[0022] Figure 4 This is a partial exploded schematic diagram of the punching device for inner bending of a curved pipe according to the utility model. Figure 1 ;

[0023] Figure 5 is a partial exploded schematic view of the punching device for inner bending of the elbow pipe of the present utility model Figure 2 ;

[0024] Figure 6 is a schematic structural view of one of the arrangements of the position of the punch member of the present utility model;

[0025] Figure 7 is a schematic structural view of another arrangement of the position of the punch member of the present utility model. Detailed implementation manners

[0026] The present utility model will be further described below with reference to the accompanying drawings:

[0027] The orientations described in the utility model specification, such as "upper", "lower", "left", "right", "front", "rear", etc., are all based on the orientation of the accompanying drawings and are for the purpose of facilitating the description of the relationships between various components. They do not indicate the only or absolute positional relationship between various components. It is only one of the implementation manners for realizing the utility model and does not limit its implementation manners.

[0028] As shown in Figure 1 and Figure 2 In this embodiment, a punching device for inner bending of an elbow pipe is provided, which is mainly applied to an elbow pipe equipment. Of course, this punching device for inner bending of an elbow pipe can also be used as a secondary processing mechanism alone for processing through holes on the pipe A processed into an elbow pipe. This punching device for inner bending of an elbow pipe includes a base 1. A positioning die 2 is provided on the base 1. A matching groove 21 for placing the pipe A and matching the shape of the pipe A is provided on the side of the positioning die 2. As shown in Figures 3 to 5 In the positioning die 2, a punch member 3 capable of sliding relative to it is provided. The positioning die 2 is provided with a punch hole 22 on the groove wall of the matching groove 21. A punch head 31 capable of passing through the punch hole 22 during the sliding process is provided on the punch member 3. The positioning die 2 is connected with a driving structure 101 for driving the punch member 3 to slide so that the punch head 31 passes through the punch hole 22 to punch the pipe A. During operation, the punch head 3 passes through the punch hole 22 and punches on the inner side of the bending part of the pipe A, thereby realizing the function of precise punching. At the same time, the deformation of the pipe A is restricted by the groove wall of the matching groove 21, so that the cross-section of the pipe A is difficult to deform, thereby preventing deformation during punching and affecting the processing accuracy.

[0029] Preferably, as shown in Figures 1 to 3As shown in the figure, a clamping structure 102 is further provided on the base 1 for pressing the pipe A towards the matching groove 21. The clamping structure 102 includes a sliding seat 6 slidably connected to the base 1 and a second driving device 7 for driving the sliding seat 6 to slide towards the positioning die 2. A pressing block 8 capable of abutting against the pipe A is provided on the sliding seat 6 when it slides towards the positioning die 2. A mating groove 81 is provided on one side of the pressing block 8 close to the positioning die 2. After the pressing block 8 and the positioning die 2 approach each other, the mating groove 81 and the matching groove 21 are closed to form a channel matching the shape of the pipe A. In this way, near the punching position, the pipe A is restricted in the channel, making it extremely difficult to deform radially during the punching process, ensuring that its shape during the processing process is not changed, and at the same time preventing defects such as material deformation and cracking during the punching process, ensuring the processing accuracy and product quality. Of course, in this embodiment, the base 1 is provided with a corresponding clamping structure 102. However, if the above-mentioned matching groove 21 can fully wrap the pipe A, that is, wrap the pipe A to an arc exceeding 180° in the circumferential direction, the corresponding clamping structure 102 may not be required.

[0030] As a preferred embodiment of the driving structure 101, as Figures 3 to 5 shown, the driving structure 101 includes a sliding member 4 slidably connected to the positioning die 2 and a first driving device 5 connected to the positioning die 2 and capable of pushing the sliding member 4 to slide. An inclined first mating surface 41 is provided on the sliding member 4, and a second mating surface 32 abutting against the first mating surface 41 is provided on the punch member 3. Therefore, both the first mating surface 41 and the second mating surface 32 are matching inclined surfaces, so that the punch member 3 can be pushed to slide when the sliding member 4 slides. In addition, the inclination angle of the first mating surface 41 can also be set so that the sliding member 4 has a greater moment when pushing the punch member 3, thereby increasing the impact force of the punch member 3 and saving the output power of the first driving device 5.

[0031] As Figures 3 to 5As shown, a first sliding cavity 23 is provided in the positioning die 2. The sliding member 4 is arranged in the first sliding cavity 23 and can slide in the first sliding cavity 23. A second sliding cavity 24 communicating with the first sliding cavity 23 is further provided in the positioning die 2. The punching needle member 3 is arranged in the second sliding cavity 24 and can slide in the second sliding cavity 24. The punching needle hole 22 communicates with the second sliding cavity 24, so that when the punching needle member 3 slides, the punching needle head 31 can penetrate out of the punching needle hole 22. In this embodiment, the first sliding cavity 23 is longitudinally arranged, while the second sliding cavity 24 is transversely arranged. Thus, when the first driving device 5 pushes the sliding member 4 to slide longitudinally, the punching needle member 3 is pushed to move transversely by the first mating surface 41 abutting against the second mating surface 32. When the punching needle member 3 moves transversely, the punching needle head 31 can penetrate out of the punching needle hole 22, and thus a hole can be punched in the pipe A. Of course, the first sliding cavity 23 does not need to be completely vertically arranged, and the second sliding cavity 24 does not need to be completely horizontally arranged. As long as the first sliding cavity 23 and the second sliding cavity 24 intersect, so that the sliding member 4 can abut against the punching needle member 3 during the movement.

[0032] In order to make the cooperation between the sliding member 4 and the punching needle member 3 smoother and more reliable, as Figure 4 and Figure 5 shown, an installation through slot 33 for the sliding member 4 to pass through is provided on the punching needle member 3, and the second mating surface 32 is arranged in the installation through slot 33.

[0033] Preferably, as Figure 4 and Figure 5 shown, the positioning die 2 is composed of a die body 25 and a die group plate 26. The die group plate 26 can be connected to the die body 25 by welding. A concave cavity 251 is provided on the die body 25. The die group plate 26 is connected to the die body 25 and fills the concave cavity 251. The second sliding cavity 24 is arranged on the die body 25, and an opening 241 communicating with the second sliding cavity 24 for installing the punching needle member 3 is left on the die body 25 at the concave cavity 251. When the die group plate 26 is connected to the die body 25, the die group plate 26 covers the opening 241. In this way, the punching needle member 3 can be installed in the second sliding cavity 24 through the opening 241 first, and then the opening 241 can be covered by the die group plate 26, making the structure compact and facilitating processing and installation.

[0034] Preferably, as Figure 4 and Figure 5As shown, the mold body 25 is cylindrical, and the concave cavity 251 is formed on the cylindrical surface. An annular arc-shaped groove section 211 is formed on the cylindrical surface of the mold body 25. A linear groove section 212 tangent to the arc-shaped groove section 211 is formed on the mold group plate 26. The arc-shaped groove section 211 and the linear groove section 212 are connected to form the matching groove 21. In this way, whether the arc-shaped groove section 211 is formed on the mold body 25 or the linear groove section 212 is formed on the mold group plate 26, it is very conducive to processing. Moreover, the matching groove 21 formed by connecting the arc-shaped groove section 211 and the linear groove section 212 exactly fits the U-shaped pipe structure of the pipe in this embodiment. And the above structure is convenient for installing the punch member 3, with ingenious design and compact structure.

[0035] Regarding the position of the hole opening on the pipe A, the position of the hole opening on the pipe A can be any position on the pipe A, such as Figure 6 As shown, the position P1 of the hole opening on the pipe A, the position P1 of the hole opening is inside the arc section of the pipe A. The arrangement position of the punch member 3 is that the punch head 31 faces the position P1. At this time, the shape of the pressing block 8 can be set to wrap the arc section of the pipe A. As Figure 7 As shown, the position P2 of the hole opening on the pipe A, the position P2 of the hole opening is at the connection between the arc section and the straight pipe section of the pipe A. The arrangement position of the punch member 3 is that the punch head 31 faces the position P2. At this time, the shape of the pressing block 8 can be set to wrap the straight pipe section of the pipe A.

[0036] In order to improve the transmission stability between the first driving device 5 and the sliding member 4, as Figure 4 and Figure 5 As shown, an installation seat 9 is connected to the positioning mold 2. The first driving device 5 is arranged on the installation seat 9. A sliding hole 91 for the output shaft of the first driving device 5 to pass through is provided on the installation seat 9. Preferably, a connecting member 92 capable of sliding in the sliding hole 91 is provided in the sliding hole 91 of the installation seat 9. One end of the connecting member 92 is connected to the output shaft of the first driving device 5, and the other end of the connecting member 92 is connected to the sliding member 4.

[0037] The above are only the embodiments of the present invention. Common knowledge such as specific structures and characteristics in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners in the specification can be used to interpret the content of the claims.

Claims

1. A punching device for inner bending of curved pipes, characterized in that: The invention comprises a base (1), wherein a positioning mold (2) is provided on the base (1), a matching groove (21) for placing a pipe (A) is provided on the side of the positioning mold (2), a punching needle (3) capable of sliding relative to the positioning mold (2) is provided inside the positioning mold (2), a punching needle hole (22) is provided on the groove wall of the matching groove (21), and a punching needle head (31) is provided on the punching needle head (31) capable of passing through the punching needle hole (22) during the sliding process of the punching needle head (3), and the positioning mold (2) is connected to a driving structure (101) for driving the punching needle head (31) to slide so that the punching needle head (31) passes through the punching needle hole (22) and then punches a hole in the pipe (A).

2. The punching device for inner bending of curved pipe according to claim 1, characterized in that: The base (1) is also provided with a clamping structure (102) for pressing the pipe (A) toward the matching groove (21).

3. The punching device for inner bending of a curved pipe according to claim 1, characterized in that: The driving structure (101) includes a sliding member (4) slidably connected to the positioning mold (2), and a first driving device (5) connected to the positioning mold (2) and capable of pushing the sliding member (4) to slide. The sliding member (4) is provided with a first matching surface (41) that is inclined, and the punching needle member (3) is provided with a second matching surface (32) that abuts against the first matching surface (41), so that the sliding member (4) can push the punching needle member (3) to slide when sliding.

4. The punching device for inner bending of curved pipe according to claim 3, characterized in that: The positioning mold (2) is provided with a first sliding cavity (23), the sliding member (4) is arranged in the first sliding cavity (23) and can slide in the first sliding cavity (23), the positioning mold (2) is also provided with a second sliding cavity (24) which is communicated with the first sliding cavity (23), the punching needle member (3) is arranged in the second sliding cavity (24) and can slide in the second sliding cavity (24), and the punching needle hole (22) is communicated with the second sliding cavity (24) so ​​that the punching needle head (31) can pass through the punching needle hole (22) when the punching needle member (3) slides.

5. The punching device for inner bending of curved pipe according to claim 4, characterized in that: The punching needle member (3) is provided with a mounting groove (33) for the sliding member (4) to pass through, and the second matching surface (32) is arranged in the mounting groove (33).

6. The punching device for inner bending of curved pipe according to claim 4, characterized in that: The positioning mold (2) is composed of a mold body (25) and a mold assembly plate (26), the mold body (25) has a concave cavity (251), the mold assembly plate (26) is connected to the mold body (25) and fills the concave cavity (251), the second sliding cavity (24) is arranged on the mold body (25), and the mold body (25) has an opening (241) at the concave cavity (251) that is connected to the second sliding cavity (24) for installing the punching needle (3), and when the mold assembly plate (26) is connected to the mold body (25), the mold assembly plate (26) covers the opening (241).

7. The punching device for inner bending of a curved pipe according to claim 6, characterized in that: The mold body (25) is cylindrical and has the concave cavity (251) on the cylindrical surface. The cylindrical surface of the mold body (25) has an annular arc groove section (211). The mold assembly plate (26) has a straight groove section (212) tangent to the arc groove section (211). The arc groove section (211) and the straight groove section (212) are connected to form the matching groove (21).

8. The punching device for inner bending of a curved pipe according to claim 2, characterized in that: The clamping structure (102) comprises a sliding seat (6) slidably connected to the base (1), and a second driving device (7) for driving the sliding seat (6) to slide toward the positioning mold (2); the sliding seat (6) is provided with a clamping block (8) that can abut against the pipe (A) when it slides toward the positioning mold (2); the clamping block (8) is provided with a matching groove (81) on the side close to the positioning mold (2); when the clamping block (8) and the positioning mold (2) are brought close together, the matching groove (81) and the matching groove (21) are combined to form a channel that matches the shape of the pipe (A).

9. The punching device for inner bending of a curved pipe according to claim 4, characterized in that: The positioning mold (2) is connected to a mounting seat (9), the first driving device (5) is arranged on the mounting seat (9), and the mounting seat (9) is provided with a sliding hole (91) for the output shaft of the first driving device (5) to pass through.

10. The punching device for inner bending of a curved pipe according to claim 9, characterized in that: A connecting member (92) capable of sliding in the sliding hole (91) is provided in the sliding hole (91) of the mounting seat (9); one end of the connecting member (92) is connected to the output shaft of the first driving device (5), and the other end of the connecting member (92) is connected to the sliding member (4).

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