Pipe side hole stamping die

Abstract

This invention discloses a side hole stamping die for pipe fittings, comprising a base, a lower die, an upper die, and a core die. The lower die is mounted on the base; the upper die is movably mounted above the lower die and has a stamping part mounted on it. The upper die is also connected to a first driving mechanism, which drives the upper die and causes the stamping part to reciprocate in the vertical direction; the core die is mounted on the lower die and arranged in the front-back direction; wherein, the front end of the core die has a guide surface, and the lower die is movably mounted on the base and can drive the upper die to reciprocate synchronously in the left-right direction relative to the base. Thus, when there is a positional deviation between the core die and the pipe fitting, the guide surface of the core die abuts against the periphery of the pipe hole and moves in the left-right direction relative to the base through the lower die, thereby adjusting the position of the core die in the left-right direction, so that the core die can be aligned with the pipe hole and inserted into the pipe hole, thereby achieving the positioning of the pipe fitting.

Description

Technical Field

[0001] This invention relates to the field of pipe stamping technology, and in particular to a pipe side hole stamping die. Background Technology

[0002] Currently, the side holes of hollow pipe fittings are usually processed using stamping dies. The stamping die includes an upper die and a lower die. The upper die is located above the lower die and can move relative to the lower die in the vertical direction. A core die that can be inserted into the pipe fitting to support and position it is also installed between the upper die and the lower die. The upper die is equipped with stamping parts for punching holes in the pipe fitting.

[0003] During processing, the pipe fitting needs to be fitted onto the outer circumference of the mandrel. Then, the upper die drives the stamping part downward to punch holes in the side wall of the pipe fitting. In this process, manually fitting the pipe fitting onto the outer circumference of the mandrel is inefficient. If the pipe fitting is pushed closer to the stamping die by a pushing mechanism to fit onto the outer circumference of the mandrel, it is necessary to ensure that the pipe fitting and the mandrel are axially aligned. If their positions are misaligned, the mandrel may not be able to be inserted into the pipe fitting, or the end of the mandrel may even collide with the end of the pipe fitting, causing damage to both the pipe fitting and the mandrel. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a side hole stamping die for pipe fittings, which facilitates the positioning of pipe fittings.

[0005] According to an embodiment of the present invention, a pipe fitting side hole stamping die includes: a base; a lower die mounted on the base; an upper die movably mounted above the lower die, the upper die having a stamping part mounted thereon, and the upper die also being drively connected to a first driving mechanism, the first driving mechanism being able to drive the upper die and cause the stamping part to reciprocate in the up-down direction; and a core die mounted on the lower die and arranged in the front-back direction; wherein, the front end of the core die has a guide surface, and the lower die is movably mounted on the base and is able to drive the upper die to reciprocate synchronously in the left-right direction relative to the base.

[0006] The pipe fitting side hole stamping die according to an embodiment of the present invention has at least the following beneficial effects:

[0007] By setting a guide surface at the front end of the core mold, the lower mold is movably mounted on the base, allowing the lower mold to reciprocate relative to the base in the left-right direction. When there is a deviation in the position between the core mold and the pipe fitting, the guide surface can guide the pipe fitting to be fitted onto the outer periphery of the core mold in the front-back direction. During this process, the guide surface of the core mold abuts against the periphery of the pipe hole of the pipe fitting, and the lower mold moves relative to the base in the left-right direction, thereby adjusting the position of the core mold in the left-right direction so that the core mold can be aligned with the pipe hole of the pipe fitting and inserted into the pipe hole of the pipe fitting, thereby achieving the positioning of the pipe fitting.

[0008] According to some embodiments of the present invention, the base is provided with a mounting groove corresponding to the lower mold, the width of the mounting groove in the left-right direction is greater than the width of the lower mold in the left-right direction, and the lower mold is movably mounted in the mounting groove.

[0009] According to some embodiments of the present invention, a frame is also included, wherein the base is movably mounted on the frame and is capable of reciprocating relative to the frame in a front-rear direction.

[0010] According to some embodiments of the present invention, the lower mold has a guide hole arranged in the front-rear direction, the core mold is installed in the guide hole, and there is a gap between the outer peripheral wall of the core mold and the inner peripheral wall of the guide hole.

[0011] According to some embodiments of the present invention, the lower mold includes a first mounting plate and a second mounting plate. The lower surface of the first mounting plate is provided with a first groove, and the upper surface of the second mounting plate is provided with a second groove. The first mounting plate is mounted on the upper surface of the second mounting plate, and the first groove and the second groove surround each other to form the guide hole.

[0012] According to some embodiments of the present invention, a mounting block is provided between the first mounting plate and the second mounting plate. The first mounting plate has a first mounting hole arranged in the vertical direction, and the second mounting plate has a second mounting hole arranged in the vertical direction and aligned with the first mounting hole. The mounting block is installed in the first mounting hole and the second mounting hole, and the core mold is installed in the mounting block and located in the guide hole.

[0013] According to some embodiments of the present invention, the upper surface of the lower die is provided with a relief hole extending downward to the guide hole, and the stamping part is movably inserted through the relief hole.

[0014] According to some embodiments of the present invention, the sidewall of the core mold is provided with a stamping hole arranged in the vertical direction, the stamping hole being located below the relief hole and aligned with the relief hole.

[0015] According to some embodiments of the present invention, a mounting base is further included, the mounting base being mounted above the upper mold via at least one mounting post, and the first drive mechanism is mounted on the mounting base.

[0016] According to some embodiments of the present invention, at least one guide post is provided between the upper mold and the lower mold, the guide post is installed on the lower mold, and the upper mold is movably sleeved on the outer periphery of the guide post and can reciprocate along the guide post.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a pipe fitting side hole stamping die according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a pipe fitting side hole stamping die according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A partial cross-sectional view of the side hole stamping die for the central tube fitting;

[0022] Figure 4 This is a partial cross-sectional view of a pipe fitting side hole stamping die according to an embodiment of the present invention;

[0023] Figure 5 This is another partial cross-sectional view of the pipe fitting side hole stamping die according to an embodiment of the present invention;

[0024] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0025] Figure 7 This is an exploded view of the pipe fitting side hole stamping die according to an embodiment of the present invention.

[0026] Figure label:

[0027] Frame 100, slide rail 110, slide base 120;

[0028] Base 200, mounting slot 210, mounting base 220, mounting post 230;

[0029] The components include: lower mold 300, first mounting plate 310, first groove 311, first mounting hole 312, second mounting plate 320, second groove 321, second mounting hole 322, guide hole 330, mounting block 340, movable seat 350, and guide post 360.

[0030] Upper die 400, stamping part 410, first drive mechanism 420;

[0031] Core mold 500, guide surface 510, stamping hole 520;

[0032] Pipe fittings 600. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0037] Reference Figures 1 to 7 An embodiment of the present invention provides a side hole stamping die for pipe fittings, comprising a base 200, an upper die 400, a lower die 300, and a core die 500. The lower die 300 is mounted on the base 200. The upper die 400 is movably mounted above the lower die 300, and a stamping part 410 is mounted on the upper die 400. The upper die 400 is also connected to a first driving mechanism 420, which drives the upper die 400 to reciprocate the stamping part 410 in the vertical direction. The core die 500 is mounted on the lower die 300 and arranged in the front-back direction. The front end of the core die 500 is provided with a guide surface 510. The lower die 300 is movably mounted on the base 200 and can drive the upper die 400 to reciprocate synchronously relative to the base 200 in the horizontal direction.

[0038] In the above structure, by setting a guide surface 510 at the front end of the core mold 500, the lower mold 300 is movably mounted on the base 200, allowing the lower mold 300 to reciprocate in the left-right direction relative to the base 200. When there is a positional deviation between the core mold 500 and the pipe 600, the guide surface 510 can guide the pipe 600 to be fitted onto the outer periphery of the core mold 500 in the front-back direction. During this process, the guide surface 510 of the core mold 500 abuts against the periphery of the pipe hole of the pipe 600, and the lower mold 300 moves in the left-right direction relative to the base 200, thereby adjusting the position of the core mold 500 in the left-right direction, so that the core mold 500 can be aligned with the pipe hole of the pipe 600 and inserted into the pipe hole of the pipe 600, thereby achieving the support and positioning of the pipe 600. Furthermore, since the lower die 300 can drive the upper die 400 to reciprocate synchronously in the left and right direction relative to the base 200, the stamping part 410 installed on the upper die 400 can move synchronously with the core die 500 without relative positional shift. This allows the stamping part 410 to be accurately pressed down onto the side wall of the tube 600 and stamp out the side hole, making the side hole processing of the tube 600 more precise.

[0039] It is understandable that the front end of the aforementioned core mold 500 is provided with a guide surface 510. Specifically, referring to... Figure 3 , Figure 4 as well as Figure 7 The guide surface 510 can specifically be a conical surface, with the diameter of the front end of the conical surface being smaller than the diameter of the rear end. Alternatively, the guide surface 510 can also be configured as an arc-shaped surface, with a smaller front and a larger rear, etc., and this invention does not impose specific limitations on this.

[0040] It is understood that the first drive mechanism 420 may specifically be a linear motor, a cylinder, a hydraulic cylinder, an electric push rod, a motor-driven nut and screw structure, or other linear drive mechanisms, and the present invention does not specifically limit it.

[0041] Reference Figure 5 In some embodiments, the base 200 has a mounting groove 210 corresponding to the lower mold 300. The width of the mounting groove 210 in the left-right direction is greater than the width of the lower mold 300 in the left-right direction, and the lower mold 300 is movably mounted in the mounting groove 210.

[0042] In the above structure, by opening a mounting groove 210 corresponding to the lower mold 300 in the base 200, the lower mold 300 is movably mounted in the mounting groove 210, so that the lower mold 300 can reciprocate along the mounting groove 210 in the left and right directions. The setting of the mounting groove 210 can increase the stability of the movement of the lower mold 300, and at the same time limit the range of movement of the mounting groove 210 in the left and right directions, so that the processing of the pipe fitting 600 is more stable.

[0043] It is understood that in order to achieve relative movement between the lower mold 300 and the base 200, in addition to opening a mounting groove 210 corresponding to the lower mold 300 in the base 200, a guide rail arranged in the left and right direction can also be installed in the base 200, and the lower mold 300 can be movably installed on the guide rail. The present invention does not make specific limitations on this.

[0044] Reference Figures 1 to 6 In some embodiments, a base 200 may have two mounting slots 210, each mounting slot 210 movably mounting a lower die 300. This allows the pipe fitting side hole stamping die to simultaneously stamp side holes in two pipe fittings 600, greatly improving processing efficiency. Of course, the number of lower dies 300 movably mounted on a base 200 can be two, one, three, four, or more; the present invention does not specifically limit this.

[0045] Reference Figure 1 In some embodiments, the pipe fitting side hole stamping die also includes a frame 100, and a base 200 is movably mounted on the frame 100 and can reciprocate relative to the frame 100 in the front-back direction.

[0046] In the above structure, since the base 200 can reciprocate relative to the frame 100 in the front-back direction, when processing the pipe 600, the pipe 600 can first be fixed to the frame 100 in the front-back direction and positioned at the front end of the mandrel 500. Then, the base 200 is directly pushed, causing the upper mandrel 400 and the lower mandrel 300 to move forward relative to the frame 100 and closer to the pipe 600, so that the mandrel 500 can be inserted into the pipe hole of the pipe 600. During this process, when there is a positional deviation between the mandrel 500 and the pipe 600, the guide surface 510 of the mandrel 500 abuts against the periphery of the pipe hole of the pipe 600, and the lower mandrel 300 moves in the left-right direction relative to the base 200, thereby adjusting the position of the mandrel 500 in the left-right direction, so that the mandrel 500 can be aligned with the pipe hole of the pipe 600 and inserted into the pipe hole of the pipe 600, thereby achieving the support and positioning of the pipe 600.

[0047] Understandably, referring to Figure 1 In some embodiments, the frame 100 is provided with a rotating worktable, on which a fixture for fixing the pipe fitting 600 is provided. The rotating worktable can rotate relative to the frame 100 and drive the fixture to rotate. When the fixture drives the pipe fitting 600 to rotate until it is aligned with the core mold 500, it can push the base 200 forward and drive the upper mold 400 and lower mold 300 to move forward relative to the frame 100 and closer to the pipe fitting 600, so that the core mold 500 can be inserted into the pipe hole of the pipe fitting 600.

[0048] It is understood that in some embodiments, the base 200 can move relative to the frame 100 in a front-to-back direction. Specifically, the frame 100 is equipped with a second drive mechanism that is pulsatorically connected to the base 200, and the second drive mechanism can drive the base 200 to reciprocate in a front-to-back direction. The second drive mechanism can be a linear motor, a cylinder, a hydraulic cylinder, an electric push rod, a motor-driven nut and screw structure, or other linear drive mechanisms; this invention does not specifically limit its application. Of course, in addition to this, the base 200 can also be manually moved relative to the frame 100 in a front-to-back direction; this invention also does not specifically limit its application in this regard.

[0049] Reference Figure 1 In some embodiments, the frame 100 is equipped with a slide rail 110 arranged in the front-to-back direction, a slide block 120 is movably mounted on the slide rail 110, and a base 200 is mounted on the slide block 120 and can reciprocate along the slide rail 110 in the front-to-back direction following the slide block 120. (Referring to...) Figure 1 There are two slide rails 110, and each slide rail 110 is movably mounted with two slide blocks 120 connected to the base 200, thereby making the movement of the base 200 in the front-back direction more stable. Of course, the number of slide rails 110 can be one, three, four or more, in addition to two. The number of slide blocks 120 movably mounted on each slide rail 110 can also be one, three, four or more. This invention does not make a specific limitation on this.

[0050] Reference Figures 3 to 7 In some embodiments, the lower mold 300 has a guide hole 330 arranged in the front-back direction, the core mold 500 is installed in the guide hole 330, and there is a gap between the outer peripheral wall of the core mold 500 and the inner peripheral wall of the guide hole 330.

[0051] In the above structure, the mandrel 500 is installed within the guide hole 330, with a gap between the outer peripheral wall of the mandrel 500 and the inner peripheral wall of the guide hole 330. This gap accommodates the peripheral wall of the fitting 600, allowing the fitting 600 to be fitted onto the outer periphery of the mandrel 500. The guide hole 330 protects the mandrel 500, preventing significant swaying of its front end. Furthermore, the guide hole 330 guides the fitting 600 as it is fitted onto the mandrel 500, preventing excessive radial positional deviation between the fitting 600 and the mandrel 500.

[0052] Reference Figures 1 to 7In some embodiments, the lower mold 300 includes a first mounting plate 310 and a second mounting plate 320. The lower surface of the first mounting plate 310 is provided with a first groove 311, and the upper surface of the second mounting plate 320 is provided with a second groove 321. The first mounting plate 310 is mounted on the upper surface of the second mounting plate 320, and the first groove 311 and the second groove 321 surround each other to form a guide hole 330.

[0053] In the above structure, since the core mold 500 is installed in the guide hole 330 of the lower mold 300, and the lower mold 300 includes a first mounting plate 310 and a second mounting plate 320, during installation, the core mold 500 can be first installed in the second groove 321 of the second mounting plate 320, and then the first mounting plate 310 is installed on the upper surface of the second mounting plate 320, so that the first groove 311 covers the upper part of the second groove 321 and thus surrounds each other to form the guide hole 330. In this way, the core mold 500 can be installed in the guide hole 330, making the installation of the core mold 500 simpler and more convenient, and also facilitating the production and processing of the lower mold 300.

[0054] Reference Figures 1 to 7 In some embodiments, a mounting block 340 is provided between the first mounting plate 310 and the second mounting plate 320. The first mounting plate 310 has a first mounting hole 312 arranged in the vertical direction, and the second mounting plate 322 has a second mounting hole 322 arranged in the vertical direction and aligned with the first mounting hole 312. The mounting block 340 is installed in the first mounting hole 312 and the second mounting hole 322, and the core mold 500 is installed in the mounting block 340 and located in the guide hole 330.

[0055] In the above structure, by opening a first mounting hole 312 in the first mounting plate 310 and opening a second mounting hole 322 in the second mounting plate 320 that aligns with the first mounting hole 312, during installation, the core mold 500 is first installed on the mounting block 340, and then the lower part of the mounting block 340 is installed in the second mounting hole 322 of the second mounting plate 320, so that the lower half of the core mold 500 is located in the second groove 321 of the second mounting plate. Then, the first mounting plate 310 is installed on the upper surface of the second mounting plate 320, so that the upper part of the mounting block 340 is located in the first mounting hole 312. The first groove 311 covers the upper part of the second groove 321, thus forming a guide hole 330. In this way, the core mold 500 can be installed in the guide hole 330, making the installation of the core mold 500 simpler and more convenient.

[0056] It is understood that the core mold 500 is installed on the mounting block 340. Specifically, the mounting block 340 has a slot, and the core mold 500 is inserted into the slot of the mounting block 340. Alternatively, the core mold 500 can also be installed in the mounting hole by means of threaded connection, snap-fit ​​connection, etc. The present invention does not make specific limitations on this.

[0057] Reference Figure 3 and Figure 4 In some embodiments, the upper surface of the lower die 300 is provided with a relief hole extending downward to the guide hole 330, and the stamping part 410 is movably inserted through the relief hole.

[0058] In the above structure, by opening a relief hole on the upper surface of the lower die 300 for the stamping part 410 to pass through, when the tube 600 is being stamped with a side hole, the stamping part 410 can move downward along the relief hole into the guide hole 330 of the lower die 300 and abut against the side wall of the tube 600. The side hole stamping of the tube 600 can be completed by continuing to press the stamping part 410 downward. Compared to the stamping part 410 being mounted on the upper die 400 and directly located in front of the lower die 300, the setting of the relief hole can, on the one hand, limit the swaying amplitude of the stamping part 410 during movement, reduce machining errors, and protect the stamping part 410 from being directly exposed to the outside environment. On the other hand, the setting of the relief hole places the stamping part 410 above the relief hole, that is, the position of the tube 600 to be stamped is located inside the relief hole. This makes the stamping of the tube 600 more precise and avoids large swaying of the tube 600 during stamping due to the tube 600 being outside the relief hole. To a certain extent, this improves the machining accuracy of the tube 600.

[0059] Reference Figure 3 and Figure 4 In some embodiments, the sidewall of the core mold 500 is provided with a stamping hole 520 arranged in the vertical direction. The stamping hole 520 is located below the relief hole and is aligned with the relief hole.

[0060] In the above structure, by opening the punching holes 520 arranged in the vertical direction on the side wall of the core mold 500, it is convenient to position the position of the pipe 600 to be punched. On the other hand, the position of the pipe 600 to be punched is supported by the core mold 500, thereby reducing the occurrence of defects such as burrs on the edge of the punched side hole or depressions around the side hole, and improving the processing quality of the pipe 600.

[0061] It is understood that the sidewall of the core mold 500 is provided with stamping holes 520 arranged in the vertical direction. Specifically, the stamping holes 520 can be blind holes formed in the sidewall of the core mold 500, or they can be through holes penetrating the core mold 500 radially. The present invention does not specifically limit this. In addition, in order to save materials, the core mold 500 can also be made into a hollow structure. The present invention does not specifically limit this either.

[0062] Reference Figure 1 and Figure 2In some embodiments, the pipe fitting side hole stamping die also includes a mounting base 220, which is mounted above the upper die 400 by five mounting posts 230, and the first drive mechanism 420 is mounted on the mounting base 220.

[0063] In the above structure, the mounting base 220 facilitates the installation of the first drive mechanism 420, while the mounting column 230 makes the installation of the mounting base 220 more secure and stable.

[0064] Understandably, in the above structure, the first drive mechanism 420 is installed in Anhui Province, and the output end of the first drive mechanism 420 is connected to the upper mold 400. Thus, the first drive mechanism 420 can drive the upper mold 400 and move the stamping part 410 downward to stamp the side hole of the tube 600. Since the front end of the core mold 500 is provided with a guide surface 510, and the lower mold 300 is movably installed on the base 200 and can reciprocate relative to the base 200 in the left and right direction, when placing the tube 600, the guide surface 510 of the core mold 500 abuts against the periphery of the tube hole of the tube 600, and the lower mold 300 moves relative to the base 200 in the left and right direction, thereby adjusting the position of the core mold 500 in the left and right direction, so that the core mold 500 can be aligned with the tube hole of the tube 600 and inserted into the tube hole of the tube 600. In this process, the lower die 300 can drive the upper die 400 to reciprocate synchronously in the left-right direction relative to the base 200, so that the stamping part 410 mounted on the upper die 400 can move synchronously with the core die 500 without relative positional displacement. This allows the stamping part 410 to be accurately pressed down onto the side wall of the tube 600 and stamp out a side hole. Generally, the radial positional deviation between the core die 500 and the tube 600 is small, so the distance that the lower die 300 drives the upper die 400 to move synchronously is also small. Therefore, the first drive mechanism 420 can be directly fixedly mounted on the mounting base 220. Of course, in addition, the first drive mechanism 420 can also be movably mounted on the mounting base 220, so that the first drive mechanism 420 can move synchronously with the upper die 400 in the left-right direction. This invention does not specifically limit this.

[0065] It is understandable that the number of the aforementioned mounting columns 230 is five, which is only for... Figure 1 and Figure 2 As an example, the number of mounting posts 230 can be five, one, two, three, four, six or more, and the present invention does not specifically limit this.

[0066] Reference Figures 3 to 7In some embodiments, at least one guide post 360 arranged in the vertical direction is provided between the upper mold 400 and the lower mold 300. The guide post 360 is installed on the lower mold 300, and the upper mold 400 is movably sleeved on the outer periphery of the guide post 360 and can reciprocate along the guide post 360.

[0067] In the above structure, the guide post 360 can guide the upper mold 400 to move back and forth relative to the lower mold 300 in the vertical direction, making the movement of the upper mold 400 more stable.

[0068] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A die for stamping side holes in pipe fittings, characterized in that, include: Base (200); The lower mold (300) is mounted on the base (200); An upper die (400) is movably mounted above the lower die (300). The upper die (400) is equipped with a stamping part (410). The upper die (400) is also connected to a first drive mechanism (420). The first drive mechanism (420) can drive the upper die (400) and drive the stamping part (410) to reciprocate in the up and down direction. The core mold (500) is installed on the lower mold (300) and arranged in the front-rear direction; The core mold (500) has a guide surface (510) at its front end. The lower mold (300) is movably mounted on the base (200) and can drive the upper mold (400) to reciprocate synchronously in the left and right directions relative to the base (200). When there is a positional deviation between the mandrel (500) and the fitting (600), the guide surface (510) can guide the fitting (600) to be fitted onto the outer periphery of the mandrel (500) in the front-back direction. During this process, the guide surface (510) of the mandrel (500) abuts against the periphery of the pipe hole of the fitting (600) and moves in the left-right direction relative to the base (200) through the lower mold (300), thereby adjusting the position of the mandrel (500) in the left-right direction so that the mandrel (500) can be aligned with the pipe hole of the fitting (600) and inserted into the pipe hole of the fitting (600), thereby achieving the support and positioning of the fitting (600).

2. The pipe fitting side hole punching die according to claim 1, characterized in that, The base (200) has an installation groove (210) corresponding to the lower mold (300). The width of the installation groove (210) in the left-right direction is greater than the width of the lower mold (300) in the left-right direction. The lower mold (300) is movably installed in the installation groove (210).

3. The pipe fitting side hole punching die according to claim 1, characterized in that, It also includes a frame (100), the base (200) being movably mounted on the frame (100) and capable of reciprocating relative to the frame (100) in the front-back direction.

4. The pipe fitting side hole punching die according to claim 1, characterized in that, The lower mold (300) has a guide hole (330) arranged in the front-back direction. The core mold (500) is installed in the guide hole (330). There is a gap between the outer peripheral wall of the core mold (500) and the inner peripheral wall of the guide hole (330).

5. The pipe fitting side hole punching die according to claim 4, characterized in that, The lower mold (300) includes a first mounting plate (310) and a second mounting plate (320). The lower surface of the first mounting plate (310) is provided with a first groove (311), and the upper surface of the second mounting plate (320) is provided with a second groove (321). The first mounting plate (310) is mounted on the upper surface of the second mounting plate (320), and the first groove (311) and the second groove (321) surround each other to form the guide hole (330).

6. The pipe fitting side hole punching die according to claim 5, characterized in that, A mounting block (340) is provided between the first mounting plate (310) and the second mounting plate (320). The first mounting plate (310) has a first mounting hole (312) arranged in the vertical direction, and the second mounting plate (320) has a second mounting hole (322) arranged in the vertical direction and aligned with the first mounting hole (312). The mounting block (340) is installed in the first mounting hole (312) and the second mounting hole (322). The core mold (500) is installed in the mounting block (340) and located in the guide hole (330).

7. The pipe fitting side hole stamping die according to claim 4, characterized in that, The upper surface of the lower die (300) is provided with a relief hole extending downward to the guide hole (330), and the stamping part (410) is movably inserted through the relief hole.

8. The pipe fitting side hole stamping die according to claim 7, characterized in that, The sidewall of the core mold (500) is provided with a stamping hole (520) arranged in the vertical direction. The stamping hole (520) is located below the relief hole and is aligned with the relief hole.

9. The pipe fitting side hole punching die according to claim 1, characterized in that, It also includes a mounting base (220), which is mounted above the upper mold (400) by at least one mounting post (230), and the first drive mechanism (420) is mounted on the mounting base (220).

10. The pipe fitting side hole stamping die according to claim 9, characterized in that, At least one guide post (360) is provided between the upper mold (400) and the lower mold (300) in the vertical direction. The guide post (360) is installed on the lower mold (300). The upper mold (400) is movably sleeved on the outer periphery of the guide post (360) and can reciprocate along the guide post (360).

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