Pipe fitting ball passing and sizing apparatus

Abstract

The present application relates to the field of pipe shaping equipment, in particular to a pipe ball passing shaping equipment, which comprises a workbench, a die frame and a shaping ball driving mechanism arranged on the workbench, an upper die is arranged on the die frame, a first driving element is arranged to drive the upper die to move up and down, a lower die is arranged below the upper die, the upper die and the lower die are combined to form a shaping cavity, the pipe is placed in the shaping cavity, a first limiting mechanism is arranged on one side of the lower die, a guide die is arranged on the other side of the lower die, a shaping ball is arranged in the guide cavity, the shaping ball driving mechanism comprises a top rod and a second driving element arranged to drive the top rod to move, a guide assembly is connected to the end of the top rod, and the second driving element drives the top rod to drive the guide assembly to push the shaping ball to pass through the inner cavity of the pipe. The pipe ball passing shaping equipment is suitable for shaping pipes of various specifications, can improve the roundness of the inner holes of pipes of different specifications, and ensures the consistency of the shaping effect of pipes of the same batch of specifications.

Description

A pipe fitting ball shaping device Technical Field

[0001] This invention relates to the field of pipe shaping equipment, specifically a pipe ball shaping device. Background Technology

[0002] Pipe fittings are a commonly used material in pipeline construction. Usually, after the pipe fittings are manufactured, the inner diameter of the pipe fitting needs to be shaped to ensure that the inner diameter of the pipe fitting meets the corresponding standards.

[0003] Existing shaping equipment is usually only suitable for single-specification pipe fittings. It cannot flexibly replace pipe fittings of different specifications, nor can it flexibly meet the shaping requirements of pipe fittings with different wall thicknesses. This greatly reduces the shaping effect of the inner hole of the pipe fitting and has a limited range of applications.

[0004] Therefore, this application specifically designs a shaping device that can be applied to pipe fittings of various specifications, meeting the shaping requirements of pipe fittings with different wall thicknesses. Summary of the Invention

[0005] The purpose of this invention is to provide a pipe fitting ball-forming device. Through the structural design of this invention, it can meet the pipe fitting forming effect while being applicable to the forming of various specifications of pipe fittings. By moving the forming ball, the roundness of the inner hole of the pipe fitting is improved. Moreover, this invention is more suitable for forming the curved part of the curved pipe fitting. This invention can ensure the consistency of the forming effect of pipe fittings of the same batch. Through the design of the second limit mechanism, the second photoelectric proximity switch and other structures, the stroke can be precisely controlled, making the forming quality of the pipe fitting more stable.

[0006] To solve the above-mentioned technical problems, the present invention provides a pipe fitting ball shaping device, including a worktable and a mold frame and a shaping ball driving mechanism arranged sequentially from left to right on the worktable;

[0007] The mold frame is provided with an upper mold and a first driving component that drives the upper mold to move up and down. A lower mold is provided below the upper mold and the lower mold is fixed on the worktable. The first driving component drives the upper mold and the lower mold to close together to form a shaping cavity, and the tube is placed in the shaping cavity.

[0008] The lower mold has a first limiting mechanism on one side and a guide mold on the other side. The guide mold is fixed on the worktable. The guide mold has a guide cavity that communicates with the shaping cavity. The guide cavity has a shaping ball inside. The diameter of the shaping ball is equal to the inner diameter of the pipe.

[0009] The shaping ball driving mechanism includes a push rod and a second driving member that drives the push rod to move. The end of the push rod is connected to a guide assembly. The second driving member drives the push rod to drive the guide assembly to push the shaping ball through the inner cavity of the tube.

[0010] Furthermore, the guiding assembly includes a plurality of guide balls connected end to end by a series of steel wire ropes, the ends of the guide balls being concave, and the diameter of the shaping ball being larger than the diameter of the guide ball.

[0011] Furthermore, the first limiting mechanism includes a limiting seat and a plurality of adjusting bolts passing through the limiting seat. The limiting seat is fixed to the worktable by bolts, and the ends of the adjusting bolts contact the outer wall of the lower mold.

[0012] Furthermore, the output end of the second driving member is connected to the push rod via a connecting mechanism. The connecting mechanism includes a connector, and the connector has a first mounting cavity and a second mounting cavity that are not connected. The mounting part of the push rod is installed in the first mounting cavity via a clamp. The clamp is held on the outside of the push rod and fixed to the connector via bolts. The output end of the second driving member is fixedly installed in the second mounting cavity.

[0013] Furthermore, a second limiting mechanism is provided on one side of the shaping ball driving mechanism. The second limiting mechanism includes an optical axis fixing seat, a hard optical axis, a soft optical axis, a sensing block, and a first photoelectric proximity switch.

[0014] There are two optical axis fixing seats and two rigid optical axes. The two rigid optical axes are arranged side by side, one above the other. The two optical axis fixing seats are respectively located at both ends of the two rigid optical axes and are respectively fixed to the worktable.

[0015] The flexible optical axis is arranged parallel to the top rod, and one end is connected to the connector through a connecting plate, while the other end passes through two optical axis fixing seats in sequence and is placed between two rigid optical axes.

[0016] The sensor block has two parts and is respectively sleeved on the hard optical axis and the soft optical axis, and both sensor blocks are fixedly connected to the soft optical axis.

[0017] The first photoelectric proximity switch has two parts, which are respectively fixed on the worktable, and the two first photoelectric proximity switches respectively sense the two sensing blocks.

[0018] Furthermore, the outlet of the shaping cavity is provided with an upper retaining ring and a lower retaining ring for limiting the pipe fitting. The upper retaining ring is fixedly installed on the upper mold, and the lower retaining ring is fixedly installed on the lower mold. A ball receiving box is provided on the outside of the lower mold, and the ball receiving box is located below the lower retaining ring. A sponge soaked in lubricating oil is provided inside the ball receiving box.

[0019] Furthermore, the mold frame includes a support shaft assembly and a support plate. The support shaft assembly includes a first support shaft, a second support shaft, a third support shaft, and a fourth support shaft. The first support shaft, the second support shaft, the third support shaft, and the fourth support shaft are all fixedly mounted on the workbench and are respectively distributed at the four corners of the support plate.

[0020] A first transparent baffle is provided between the first support shaft and the second support shaft, and the first transparent baffle is connected to the first support shaft and the second support shaft respectively by a split optical axis fixing clamp;

[0021] A second transparent baffle is provided between the second support shaft and the third support shaft. The second transparent baffle is connected to the second support shaft and the third support shaft respectively by a split optical axis fixing clamp.

[0022] Safety light curtains are provided on the first support shaft, the third support shaft and the fourth support shaft.

[0023] Furthermore, the first driving component is fixedly mounted on the support plate and its output end passes through the support plate and is connected to the upper mold through a connecting block. A plurality of guide shafts are provided between the connecting block and the support plate. A second photoelectric proximity switch is provided below the support plate. A second sensing block is provided on the guide shaft near the second photoelectric proximity switch. The second sensing block senses the second photoelectric proximity switch.

[0024] Furthermore, both the lower mold and the guide mold are assembled on the worktable via a mold assembly plate.

[0025] Furthermore, an electrical cabinet is provided below the workbench, and the electrical cabinet is equipped with at least two sets of cooling fans and ventilation windows, with the ventilation windows located above the cooling fans.

[0026] The beneficial effects of this invention are:

[0027] 1. This invention is applicable to the shaping needs of various specifications of pipe fittings. Through the design of the shaping ball driving mechanism, guide cavity, and shaping cavity, the second driving component can drive the top rod to drive the guide assembly to push the shaping ball through the inner cavity of the pipe fitting. The movement of the shaping ball shapes the inner hole of the pipe fitting, which can greatly improve the roundness of the inner hole of the pipe fitting. Moreover, this invention has a better shaping effect on the bent part of the bent pipe fitting, and can also ensure the consistency of the shaping effect of pipe fittings of the same batch.

[0028] 2. The ball receiving box design of this invention ensures that the shaped ball falls smoothly into the receiving box after the shaping operation is completed, and will not fly out of the workbench, which can greatly improve the safety of the shaping process. In addition, the ball receiving box is equipped with a sponge soaked in lubricating oil, which can ensure that the shaped ball does not move around in the receiving box, and the lubricating oil is conducive to the movement of the shaped ball in the next pipe shaping operation, improving the shaping effect.

[0029] 3. Through the design of the first limiting mechanism, this invention can reduce the impact force on the lower mold caused by the shaping ball drive mechanism during the shaping process. By adjusting the bolt to hold the lower mold in place, the movement of the lower mold is prevented, thus improving the shaping effect of the pipe fitting. In addition, the first limiting mechanism is suitable for shaping pipe fittings of various specifications. It can limit the lower molds of different specifications in a low-cost and more convenient way, and has a wide range of applications.

[0030] 4. This invention is applicable to the shaping of pipe fittings with different wall thicknesses. When the outer diameter of the pipe fittings is the same, it can perform shaping operations on the inner diameter of pipe fittings with different wall thicknesses. The shaping operation can be completed simply by replacing the shaping ball, guide assembly, and push rod of different specifications. Furthermore, the design of the connecting mechanism makes it faster and more convenient to replace push rods of different specifications. Only the clamps of different specifications need to be replaced to fix the push rod to the connector, without disassembling the connection between the second drive component and the connector, reducing the number of connectors at the output end of the second drive component and improving operational efficiency. The diameter of the shaping ball is slightly larger than that of the guide ball, ensuring that the guide ball will not damage the inner wall of the pipe fitting, thus improving the shaping quality of the pipe fitting.

[0031] 5. This invention is applicable to the shaping of pipe fittings with different outer diameters. The upper mold and connecting block are fixed with bolts, and the lower mold and guide mold are both fixed with bolts to the mold assembly plate. Therefore, when changing pipe fittings with different outer diameters for shaping operations, the upper mold and mold assembly plate can be removed by unscrewing the bolts, and the matching upper mold and mold assembly plate can be replaced (the lower mold and guide mold are fixed on the mold assembly plate). Moreover, the bolt mounting holes on the support plate and mold assembly plate are designed in the same position, which can enhance the versatility of the support plate and mold assembly plate in this invention. It is suitable for the installation of molds of multiple specifications, and the disassembly and replacement are convenient, saving operation time and improving operation efficiency.

[0032] 6. The present invention improves the safety of the pipe shaping process by designing a safety light curtain. When the safety light curtain senses a human body, the control system stops the operation of the first and second driving components, which can prevent workers from being mechanically injured and greatly protect the safety of workers. At the same time, the design of the first and second transparent baffles can prevent accidental contact by outsiders, thus improving the safety of the shaping process.

[0033] 7. The present invention, through the design of the second limiting mechanism, can precisely control the stroke, making the shaping quality of the pipe more stable. Specifically, by controlling the output stroke of the output end of the second drive component, it can avoid excessive stroke, which could cause the guide component to completely enter the shaping cavity and damage the bent part of the pipe, resulting in the failure of pipe shaping. In addition, the use of the first photoelectric proximity switch can replace the ordinary limit switch, reducing the failure rate of the present invention and improving the safety of the shaping process.

[0034] 8. Through the design of the second photoelectric proximity switch and the second sensing block, this invention can accurately control the stroke of the first driving component to drive the upper mold to open upward during the shaping of pipes of different specifications. Moreover, it can adjust the upper and lower positions of the second sensing block on the guide shaft according to the upper mold of different thicknesses to accurately control the movement stroke of the upper mold opening.

[0035] 9. The design of the upper and lower retaining rings in this invention can prevent the pipe from detaching from the forming cavity, ensuring the forming quality of the pipe and greatly improving the forming effect.

[0036] 10. The present invention improves the heat dissipation efficiency inside the electrical cabinet and extends the service life of the equipment through the design of the cooling fan and ventilation window. Attached Figure Description

[0037] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 is a schematic diagram of the initial structure of the pipe fitting ball-forming device of the present invention before placing the pipe fitting;

[0039] Figure 2 is a schematic diagram of the structure of the pipe ball-forming device of the present invention when the upper and lower molds are closed;

[0040] Figure 3 is a partial structural schematic diagram of Figure 2;

[0041] Figure 4 is a partial structural diagram of the pipe ball-forming equipment of the present invention before forming;

[0042] Figure 5 is a partial structural schematic diagram of Figure 1;

[0043] Figure 6 is a partial structural schematic diagram of the second limiting mechanism of the present invention;

[0044] In the diagram: 1-Workbench, 2-Mold frame, 3-Shaping ball drive mechanism, 4-Upper mold, 5-First drive component, 6-Lower mold, 7-Mold assembly plate, 8-Shaping cavity, 9-First limiting mechanism, 10-Guide mold, 11-Guide cavity, 12-Shaping ball, 13-Connecting mechanism, 14-Second limiting mechanism, 15-Upper retaining ring, 16-Lower retaining ring, 17-Ball receiving box, 18-Connecting block, 19-Guide shaft, 110-Second photoelectric proximity switch, 111-Second sensing block, 112-Electrical cabinet, 113-Cooling fan, 114-Ventilation window, 115-Base plate, 116-Guide pillar.

[0045] 21-Support shaft assembly, 22-Support plate, 31-Top rod, 32-Second driving component, 33-Guide assembly, 331-Guide ball, 91-Limit seat, 92-Adjusting bolt, 131-Connector, 132-Clamping piece, 141-Optical axis fixing seat, 142-Hard optical axis, 143-Soft optical axis, 144-Sensing block, 145-First photoelectric proximity switch, 146-Connecting plate, 211-First support shaft, 212-Second support shaft, 213-Third support shaft, 214-Fourth support shaft, 215-First transparent baffle, 216-Separable optical axis fixing clamp, 217-Second transparent baffle, 218-Safety light curtain. Detailed Implementation

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] In a specific embodiment of the present invention, as shown in Figures 1-6, a pipe fitting ball shaping device includes a workbench 1 and a mold frame 2 and a ball shaping drive mechanism 3 arranged sequentially from left to right on the workbench 1. The mold frame 2 is provided with an upper mold 4 and a first drive member 5 for driving the upper mold 4 to move up and down. An electrical cabinet 112 is provided below the workbench 1. The electrical cabinet is provided with at least two sets of cooling fans 113 and ventilation windows 114. The ventilation windows 114 are located above the cooling fans 113.

[0048] A lower mold 6 is provided below the upper mold 4. The lower mold 6 is fixed on the worktable 1. A guide post 116 is fixed on the upper mold 4. A guide hole corresponding to the guide post 116 is provided on the lower mold 6. The first driving component 5 drives the upper mold 4 and the lower mold 6 to close and form a forming cavity 8. The pipe is placed in the forming cavity 8. At this time, the guide post 116 is inserted into the guide hole of the lower mold 6 to achieve a fastening effect, which can improve the stability of the lower mold during the forming process of the pipe and indirectly improve the forming quality of the pipe.

[0049] A first limiting mechanism 9 is provided on one side of the lower mold 6. The first limiting mechanism 9 includes a limiting seat 91 and several adjusting bolts 92 passing through the limiting seat 91. The limiting seat 91 is fixed to the worktable 1 by bolts, and the ends of the adjusting bolts 92 are in contact with the outer wall of the lower mold 6. Through the design of the first limiting mechanism, the impact force on the lower mold during the shaping process can be reduced. By adjusting the bolts to hold the lower mold in place, the movement of the lower mold is prevented, thus improving the shaping effect of the pipe fitting. In addition, the first limiting mechanism can limit lower molds of different specifications at low cost and more conveniently, and can be used for shaping various specifications of pipe fittings. Only by adjusting the adjusting bolts, the matching lower molds for shaping different specifications of pipe fittings can be quickly limited.

[0050] On the other side of the lower mold 6, there is a guide mold 10. The guide mold 10 is fixed on the worktable 1. The guide mold 10 has a guide cavity 11 that communicates with the shaping cavity 8. The guide cavity 11 has a shaping ball 12. The diameter of the shaping ball 12 is equal to the inner diameter of the pipe fitting. The design of the guide mold makes it easy to replace the shaping ball with the appropriate inner diameter when shaping pipe fittings with different wall thicknesses.

[0051] The shaping ball drive mechanism 3 includes a push rod 31 and a second drive member 32 that drives the push rod 31 to move. The end of the push rod 31 is connected to a guide assembly 33. The second drive member 32 drives the push rod 31 to drive the guide assembly 33 to push the shaping ball 12 through the inner cavity of the pipe. The guide assembly 33 includes several guide balls 331 connected end to end by steel wire ropes. The ends of the guide balls 331 are concave. The diameter of the shaping ball 12 is slightly larger than the diameter of the guide balls 331, which can ensure that the guide balls 331 will not damage the inner wall of the pipe during the process of being pushed out or retracted with the push rod, thus ensuring the shaping quality of the pipe and improving the shaping effect.

[0052] The output end of the second driving component 32 is connected to the push rod 31 via a connecting mechanism 13. The connecting mechanism 13 includes a connector 131, which has a first mounting cavity and a second mounting cavity that are not interconnected. The mounting part of the push rod 31 is installed in the first mounting cavity via a clamp 132. The clamp 132 is clamped on the outside of the push rod 31 and fixed to the connector 131 with bolts. The output end of the second driving component 32 is fixedly installed in the second mounting cavity. Through the design of the connecting mechanism, the push rod can be replaced quickly. Specifically, when replacing push rods of different specifications, only the clamps of different specifications need to be replaced to fix the push rod and the connector, without disassembling the connection between the second driving component and the connector. This avoids the need to replace the connector, reduces the number of connectors connecting the second driving component, and improves operating efficiency.

[0053] In specific operation, the first driving component and the second driving component are one or two of the following: pneumatic cylinder, hydraulic cylinder, and electric cylinder. The first driving component and the second driving component are controlled by the control system.

[0054] A second limiting mechanism 14 is provided on one side of the shaping ball drive mechanism 3. The second limiting mechanism 14 includes an optical axis fixing seat 141, a hard optical axis 142, a soft optical axis 143, a sensing block 144, and a first photoelectric proximity switch 145. There are two optical axis fixing seats 141 and two hard optical axes 142, arranged side-by-side vertically. The two optical axis fixing seats 141 are respectively located at both ends of the two hard optical axes 142 and fixed to the worktable. The soft optical axis 143 is arranged parallel to the top rod 31, with one end connected to the connector via a connecting plate 146, and the other end passing through the two optical axis fixing seats 141 and positioned between the two hard optical axes 142. There are two sensing blocks, respectively fitted onto the hard optical axis 142 and the soft optical axis 143, and both sensing blocks are fixedly connected to the soft optical axis 143. Two photoelectric proximity switches 145 are fixed on the worktable 1, and the two first photoelectric proximity switches 145 respectively sense the two sensing blocks; specifically, the first photoelectric proximity switch on the left senses the sensing block on the left to control the forward stroke of the push rod, and the first photoelectric proximity switch on the right senses the sensing block on the right to control the backward stroke of the push rod. The design of the second limit mechanism can accurately control the stroke, so that the shaping quality of the pipe fitting is more guaranteed. By controlling the output stroke of the output end of the second drive component, it can avoid excessive stroke, which could cause the guide ball of the guide component to enter the shaping cavity and damage the bent part of the pipe fitting, resulting in the failure of pipe fitting shaping. In addition, the use of the first photoelectric proximity switch can replace the ordinary limit switch, reduce the failure rate of the equipment, and improve the safety of the shaping process.

[0055] The outlet of the shaping cavity 8 is equipped with an upper retaining ring 15 and a lower retaining ring 16 for limiting the pipe fitting. The upper retaining ring 15 is fixedly mounted on the upper mold 4, and the lower retaining ring 16 is fixedly mounted on the lower mold 6. A ball receiving box 17 is provided on the outside of the lower mold 6, and the ball receiving box 17 is located below the lower retaining ring 16. The ball receiving box 17 contains a sponge soaked in lubricating oil (the sponge is not shown in the figure). The design of the upper retaining ring 15 and the lower retaining ring 16 can prevent the pipe fitting from detaching from the shaping cavity 8 during the shaping process. The design of the ball receiving box can ensure that the shaping ball falls smoothly into the ball receiving box after the shaping operation is completed, and will not fly out of the worktable, which can greatly improve the safety of the shaping process. In addition, the ball receiving box contains a sponge soaked in lubricating oil, which can ensure that the shaping ball does not move around in the ball receiving box, and the lubricating oil is conducive to the movement of the shaping ball in the next pipe fitting shaping operation, improving the rapid shaping effect.

[0056] The mold frame 2 includes a support shaft assembly 21 and a support plate 22. The support shaft assembly 21 includes a first support shaft 211, a second support shaft 212, a third support shaft 213, and a fourth support shaft 214. The first support shaft 211, the second support shaft 212, the third support shaft 213, and the fourth support shaft 214 are all fixedly mounted on the workbench 1 and are distributed at the four corners of the support plate 22. A first transparent baffle 215 is provided between the first support shaft 211 and the second support shaft 212. The first transparent baffle 215 is connected to the first support shaft 211 and the second support shaft 212 respectively through a split-type optical axis fixing clamp 216. A second transparent baffle 217 is provided between the second support shaft 212 and the third support shaft 213. The second transparent baffle 217 is connected to the second support shaft 212 and the third support shaft 213 respectively through a split-type optical axis fixing clamp. A safety light curtain 218 is provided on the first support shaft 211, the third support shaft 213, and the fourth support shaft 214. The safety light curtain design enhances the safety of the pipe shaping process. When the safety light curtain detects a human body, the control system stops the operation of the first and second driving components, preventing mechanical injury to workers and greatly ensuring their safety. At the same time, the design of the first and second transparent baffles prevents accidental contact by outsiders, further improving the safety of the shaping process.

[0057] The first driving component 5 is fixedly mounted on the support plate 22, and its output end passes through the support plate 22 and is connected to the upper mold 4 via a connecting block 18. Several guide shafts 19 are provided between the connecting block 18 and the support plate 22. A second photoelectric proximity switch 110 is located below the support plate 22. A second sensing block 111 is located on the guide shaft 19 near the second photoelectric proximity switch 110, and the second sensing block 111 senses the second photoelectric proximity switch 110. Here, through the sensing between the second sensing block and the second photoelectric proximity switch, the stroke of the first driving component driving the upper mold to open upwards can be precisely controlled. Furthermore, the vertical position of the second sensing block on the guide shaft can be adjusted according to the different thicknesses of the upper mold to precisely control the movement stroke of the upper mold opening.

[0058] Both the lower mold 6 and the guide mold 10 are mounted on the workbench 1 via the mold assembly plate 7, which is fixed to the workbench 1 with bolts. The upper mold and the connecting block are fixed with bolts, and both the lower mold and the guide mold are fixed to the mold assembly plate with bolts. Therefore, when changing pipe fittings of different outer diameters for shaping operations, only the bolts need to be removed to disassemble the upper mold and the mold assembly plate, and replace them with matching upper molds and mold assembly plates (the lower mold and the guide mold are both mounted on the mold assembly plate with bolts). Furthermore, the bolt mounting holes on the support plate and the mold assembly plate are designed to be in the same position, enhancing the versatility of the support plate and the mold assembly plate in this invention. This makes it suitable for installing molds of multiple specifications, facilitating disassembly and replacement, saving operation time, and improving operational efficiency.

[0059] As a further technical solution, a base plate 115 is provided on the workbench 1, and the mold assembly plate 7 is fixedly installed on the base plate 115 by bolts. In this way, when replacing pipes of different specifications and disassembling the mold assembly plate 7, damage to the workbench 1 can be reduced, the service life of the equipment can be improved, and due to the design of the base plate, the thickness of the mold assembly plate can be reduced, which indirectly reduces the weight of the mold assembly plate and reduces the cost of using the mold.

[0060] The shaping process of this invention is as follows:

[0061] First, select the matching forming ball, upper mold, lower mold, guide mold, guide assembly, and ejector rod according to the specifications and size of the pipe fitting and the required inner hole size. The lower mold and guide mold are assembled on the same mold assembly plate. If replacement is required, simply replace the mold assembly plate with a suitable one.

[0062] The pipe fitting is then placed into the forming cavity. The first driving component is controlled to drive the upper mold to move downwards and close with the lower mold. The lower mold is limited by the first limiting mechanism. Then, the second driving component is controlled to drive the push rod to drive the guide assembly to push the forming ball through the inner cavity of the pipe fitting to complete the shaping of the inner cavity. In this process, the movement of the forming ball shapes the inner hole of the pipe fitting, improving the roundness of the inner hole. Moreover, this invention has a better shaping effect on the curved part of the bent pipe fitting, and can also ensure the consistency of the shaping effect of pipe fittings of the same batch specifications.

[0063] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A ball-forming device for pipe fittings, characterized in that, The system includes a workbench (1) and a mold rack (2) and a shaping ball drive mechanism (3) arranged sequentially from left to right on the workbench (1). The mold rack (2) is provided with an upper mold (4) and a first drive member (5) that drives the upper mold (4) to move up and down. A lower mold (6) is provided below the upper mold (4). The lower mold (6) is fixed on the workbench (1). The first drive member (5) drives the upper mold (4) and the lower mold (6) to close together to form a shaping cavity (8). The tube is placed on the shaping cavity. Inside the cavity (8); a first limiting mechanism (9) is provided on one side of the lower mold (6) to reduce the impact force on the lower mold (6) during the shaping process, and a guide mold (10) is provided on the other side. The guide mold (10) is fixed on the worktable (1). The guide mold (10) is provided with a guide cavity (11) communicating with the shaping cavity (8). A shaping ball (12) is provided in the guide cavity (11). The diameter of the shaping ball (12) is equal to the inner diameter of the pipe. The shaping ball drive motor The structure (3) includes a push rod (31) and a second driving member (32) for moving the push rod (31). A guide assembly (33) is connected to the end of the push rod (31). The second driving member (32) drives the push rod (31) to move the guide assembly (33), which in turn pushes the shaping ball (12) through the inner cavity of the pipe. The guide assembly (33) includes several guide balls (331) connected end-to-end by a series of steel wire ropes. The ends of the guide balls (331) are concave. 12) has a diameter larger than the diameter of the guide ball (331). The outlet of the shaping cavity (8) is provided with an upper retaining ring (15) and a lower retaining ring (16) for limiting the pipe fitting. The upper retaining ring (15) is fixedly set on the upper mold (4), and the lower retaining ring (16) is fixedly set on the lower mold (6). The outer side of the lower mold (6) is provided with a ball receiving box (17). The ball receiving box (17) is set below the lower retaining ring (16). The ball receiving box (17) is provided with a sponge soaked in lubricating oil.

2. The pipe fitting ball-forming equipment according to claim 1, characterized in that, The first limiting mechanism (9) includes a limiting seat (91) and a plurality of adjusting bolts (92) passing through the limiting seat (91). The limiting seat (91) is fixed to the worktable (1) by bolts, and the end of the adjusting bolt (92) contacts the outer wall of the lower mold (6).

3. The pipe fitting ball-forming equipment according to claim 1, characterized in that, The output end of the second driving member (32) is connected to the top rod (31) through a connecting mechanism (13). The connecting mechanism (13) includes a connector (131). The connector (131) has a first mounting cavity and a second mounting cavity that are not connected. The mounting part of the top rod (31) is installed in the first mounting cavity through a clamp (132). The clamp (132) is clamped on the outside of the top rod (31) and fixed to the connector (131) with bolts. The output end of the second driving member (32) is fixedly installed in the second mounting cavity.

4. The pipe fitting ball-forming equipment according to claim 3, characterized in that, The shaping ball driving mechanism (3) has a second limiting mechanism (14) on one side. The second limiting mechanism (14) includes an optical axis fixing seat (141), a hard optical axis (142), a soft optical axis (143), a sensing block (144), and a first photoelectric proximity switch (145). There are two optical axis fixing seats (141) and two hard optical axes (142). The two hard optical axes (142) are arranged side by side, and the two optical axis fixing seats (141) are respectively located at both ends of the two hard optical axes (142) and respectively fixed to the worktable. The soft optical axis (143) is connected to the worktable. The top rod (31) is arranged in parallel, and one end is connected to the connector through the connecting plate (146), and the other end passes through the two optical axis fixing seats (141) and is placed between the two hard optical axes (142); there are two sensing blocks, both of which are sleeved on the hard optical axis (142) and the soft optical axis (143), and both sensing blocks are fixedly connected to the soft optical axis (143); there are two first photoelectric proximity switches (145), which are respectively fixed on the worktable (1), and the two first photoelectric proximity switches (145) respectively sense the two sensing blocks.

5. The pipe fitting ball-forming equipment according to claim 1, characterized in that, The mold frame (2) includes a support shaft assembly (21) and a support plate (22). The support shaft assembly (21) includes a first support shaft (211), a second support shaft (212), a third support shaft (213), and a fourth support shaft (214). The first support shaft (211), the second support shaft (212), the third support shaft (213), and the fourth support shaft (214) are all fixedly mounted on the workbench (1) and are respectively distributed at the four corners of the support plate (22). A first transparent baffle (21) is provided between the first support shaft (211) and the second support shaft (212). 5) The first transparent baffle (215) is connected to the first support shaft (211) and the second support shaft (212) respectively through the split optical axis fixing clamp (216); a second transparent baffle (217) is provided between the second support shaft (212) and the third support shaft (213), and the second transparent baffle (217) is connected to the second support shaft (212) and the third support shaft (213) respectively through the split optical axis fixing clamp; a safety light curtain (218) is provided on the first support shaft (211), the third support shaft (213) and the fourth support shaft (214).

6. The pipe fitting ball-forming equipment according to claim 5, characterized in that, The first driving component (5) is fixedly mounted on the support plate (22) and its output end passes through the support plate (22) and is connected to the upper mold (4) through the connecting block (18). A plurality of guide shafts (19) are provided between the connecting block (18) and the support plate (22). A second photoelectric proximity switch (110) is provided below the support plate (22). A second sensing block (111) is provided on the guide shaft (19) near the second photoelectric proximity switch (110). The second sensing block (111) senses the second photoelectric proximity switch (110).

7. The pipe fitting ball-forming equipment according to claim 1, characterized in that, The lower mold (6) and the guide mold (10) are both assembled on the workbench (1) via a mold assembly plate (7).

8. The pipe fitting ball-forming equipment according to claim 1, characterized in that, An electrical cabinet (112) is provided below the workbench (1). The electrical cabinet is provided with at least two sets of cooling fans (113) and ventilation windows (114). The ventilation windows (114) are located above the cooling fans (113).

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