Multi-station automatic welding machine

Abstract

The multi-station automatic welding machine comprises a water pipe positioning mechanism, the water pipe positioning mechanism is provided with a plurality of side-by-side water pipe positioning dies and clamping air cylinders in one-to-one correspondence with the water pipe positioning dies, and clamping die holders are arranged at the two ends of the water pipe positioning mechanism; the clamping die holder is provided with pipe joint positioning dies aligned with the water pipe positioning dies one by one, each pipe joint positioning die is provided with a connecting opening facing the end face side of the water pipe, the clamping die holder is connected with a first air cylinder reciprocating in the direction of the water pipe positioning dies, and a lifting seat is arranged between the water pipe positioning mechanism and the pipe joint positioning dies; and die heads on the two sides of the heating dies face the end face of the water pipe and the connecting opening. According to the multi-station automatic welding machine, water supply pipes of a plurality of branch water supply channels can be welded at a time, and the problem that the two opposite sides of the water pipes serving as the branch water supply channels cannot be smoothly spliced with the pipe joints into a whole due to welding deviation between the water pipes and the pipe joints is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of water pipe welding machines, in particular to a multi-station automatic welding machine used for welding water pipes and joints into a water pipe closed loop. Background Art

[0002] In the prior art, if a water pipe is to be connected to a pipe joint, it is generally welded by a water pipe hot melt welding machine. The hot melt welding machine includes at least two heatable die heads. The connecting ends of the water pipe and the pipe joint cooperate with the two die heads respectively. The water pipe is inserted into one of the die heads to melt the outer ring, and the pipe joint is sleeved on the other die head to melt the inner ring. Then the molten end of the water pipe is inserted into the molten end of the pipe joint for welding to achieve the welding of the water pipe and the pipe joint. Although this processing method can achieve the connection between the water pipe and the pipe joint, its processing efficiency is low, the processing accuracy is not high, and a certain angle of deflection often occurs between the water pipe and the pipe joint. In the water supply system, a water supply pipe with multiple branch water supply channels welded into a ring by multiple water pipes and multiple pipe joints is needed. If the traditional welding method is used to weld the pipe joint and the water pipe step by step, due to the welding deviation between the water pipe and the pipe joint, it is easy to cause the opposite sides of the water pipe as the branch water supply channel to be unable to be smoothly spliced ​​with the pipe joint into one. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a multi-station automatic welding machine, which can realize the welding of water supply pipes of multiple branch water supply channels at one time, avoiding the problem that the opposite sides of the water pipes serving as the branch water supply channels cannot be smoothly spliced ​​into one with the pipe joints due to welding deviation between the water pipes and the pipe joints.

[0004] In order to solve the above technical problems, the present invention is solved through the following technical solutions: a multi-station automatic welding machine, including a water pipe positioning mechanism, the water pipe positioning mechanism is provided with a plurality of side-by-side water pipe positioning molds and clamping cylinders corresponding to the water pipe positioning molds one by one, clamping mold seats are provided at both ends of the water pipe positioning mechanism, the clamping mold seats are provided with a plurality of pipe joint positioning molds aligned one by one with the water pipe positioning molds, the pipe joint positioning molds have a connecting opening facing the water pipe end face side, the clamping mold seat is connected to a first cylinder reciprocating in the direction of the water pipe positioning mold, a lifting seat is provided between the water pipe positioning mechanism and the pipe joint positioning mold, a plurality of heating molds are provided on the lifting seat, and the mold heads on both sides of the heating molds face the water pipe end face and the connecting opening. When this multi-station automatic welding machine is in use, multiple water pipes are positioned on the water pipe positioning mold, the pipe joints are positioned on the pipe joint positioning mold, the lifting seat rises, the die heads on both sides of the heating mold are aligned with the water pipe end faces and the connecting openings, the heating mold is heated and the first cylinder is driven to extend, the water pipes and the pipe joints are sleeved on the die heads on both sides of the heating mold for hot melting, after the hot melting is completed, the first cylinder retreats, the water pipes and the pipe joints are separated from the die heads on both sides of the heating mold, the lifting seat then descends, and then the first cylinder is extended again, the hot-melted water pipes and pipe joints are sleeved, and the welding is completed after the water pipes and pipe joints are cooled. The multi-station automatic welding machine can realize the welding of water supply pipes of multiple branch water supply channels at one time, avoiding the problem that the opposite sides of the water pipes serving as branch water supply channels cannot be smoothly spliced ​​into one with the pipe joints due to the welding deviation between the water pipes and the pipe joints.

[0005] In the above technical scheme, preferably, the water pipe positioning mechanism includes a first slide rail, two first sliding seats are slidably arranged on the first slide rail, a plurality of aligned water pipe positioning molds are arranged on the two first sliding seats, the clamping cylinder is arranged on the first sliding seat, a positioning seat which can be moved and positioned along the direction of the first slide rail is arranged on the outer side of at least one of the pipe joint positioning molds, the first cylinder is arranged on the positioning seat, the cylinder rod of the first cylinder is connected to the clamping mold seat, a second slide rail is arranged parallel to the first slide rail, a second sliding seat is slidably arranged on the second slide rail, a lifting cylinder is arranged on the second sliding seat, and the cylinder rod of the lifting cylinder is connected to the lifting seat. By adopting this structure, the spacing of the aligned water pipe positioning molds can be adjusted by moving the first sliding seat to achieve the positioning of water pipes of different lengths. The position of the heating mold can be adjusted by moving the second sliding seat to ensure that the heating mold is located between the water pipe positioning mechanism and the pipe joint positioning mold after the lifting seat rises. By moving at least one of the positioning seats, the initial spacing of the two clamping mold seats can be adjusted, so that the multi-station automatic welding machine can be suitable for welding water supply pipes of various lengths with multiple branch water supply channels.

[0006] In the above technical solution, preferably, the positioning seat is slidably disposed on the first slide rail and can be fixed on the first slide rail. With this structure, the positioning seat and the first slide seat share the slide rail, making the structure simpler and making the position of the positioning seat easier to adjust.

[0007] In the above technical solution, preferably, the clamping cylinder is a rotary clamping cylinder. The use of a rotary clamping cylinder can make it more convenient to put in the water pipe and take out the finished product after welding.

[0008] In the above technical solution, preferably, the clamping die seat is slidably arranged on the first slide rail. With this structure, the clamping die seat and the first slide seat share the slide rail, making the structure simpler.

[0009] In the above technical solution, preferably, a positioning bracket is provided on the clamping die base, a mold opening and closing cylinder is fixed on the positioning bracket, several of the pipe joint positioning dies include an upper die and a lower die, the upper die and the lower die are assembled one by one to form a pipe joint mold cavity, several of the lower dies are fixed on the clamping die base, several of the upper dies are connected to a lifting plate, and the lifting plate is fixed on the cylinder rod of the mold opening and closing cylinder. This structure is convenient for fixing the pipe joint to the clamping die base.

[0010] Compared with the prior art, the present invention has the following beneficial effects: when the multi-station automatic welding machine is in use, multiple water pipes are positioned on the water pipe positioning mold, the pipe joints are positioned on the pipe joint positioning mold, the lifting seat rises, the die heads on both sides of the heating mold are aligned with the water pipe end faces and the connecting openings, the heating mold is heated and the first cylinder is driven to extend, the water pipes and the pipe joints are sleeved on the die heads on both sides of the heating mold for hot melting, after the hot melting is completed, the first cylinder retreats, the water pipes and the pipe joints are separated from the die heads on both sides of the heating mold, the lifting seat then descends, and then the first cylinder is extended again, the hot-melted water pipes and pipe joints are sleeved, and the welding is completed after the water pipes and the pipe joints are cooled. The multi-station automatic welding machine can realize the welding of water supply pipes of multiple branch water supply channels at one time, avoiding the problem that the opposite sides of the water pipes serving as branch water supply channels cannot be smoothly spliced ​​into one with the pipe joints due to the welding deviation between the water pipes and the pipe joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0012] Figure 2 This is a schematic diagram of the structure of the water pipe and the pipe joint when installing the embodiment of the present invention.

[0013] Figure 3 It is a schematic diagram of the structure of the lifting seat after descending according to the embodiment of the present invention.

[0014] Figure 4It is a schematic diagram of the connection structure between the second sliding seat and the lifting seat in an embodiment of the present invention.

[0015] Figure 5 A water supply pipe with multiple branch water supply channels processed according to an embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 5 A multi-station automatic welding machine includes a frame 100, on which a water pipe positioning mechanism 1 is provided. The water pipe positioning mechanism 1 is provided with a plurality of parallel water pipe positioning molds 11 and a clamping cylinder 12 corresponding to the water pipe positioning molds 11. In this embodiment, three pairs of water pipe positioning molds 11 are provided, and clamping mold seats 2 are provided at both ends of the water pipe positioning mechanism 1. The clamping mold seat 2 is provided with three pipe joint positioning molds 21 aligned one by one with the water pipe positioning mold 11. The pipe joint positioning mold 21 has a connecting opening facing the water pipe end face side, and the clamping mold seat 2 is connected to a first cylinder 3 that reciprocates in the direction of the water pipe positioning mold 11. The expansion and contraction of the first cylinder 3 can drive the clamping mold seat 2 to move toward or away from the water pipe positioning mold 11. A lifting seat 4 is provided between the water pipe positioning mechanism 1 and the pipe joint positioning mold 21, and a plurality of heating molds 5 are provided on the lifting seat 4. The die heads on both sides of the heating mold 5 face the water pipe end face and the connecting opening. When this multi-station automatic welding machine is in use, three water pipes are positioned on the water pipe positioning mold 11, the pipe joints are positioned on the pipe joint positioning mold 21, the lifting seat 4 rises, the die heads on both sides of the heating mold 5 are aligned with the water pipe end faces and the connecting openings, and then the heating mold 5 is heated and drives the first cylinder 3 to extend, and the water pipes and the pipe joints are sleeved on the die heads on both sides of the heating mold 5 for hot melting. After the hot melting is completed, the first cylinder 3 retreats, and the water pipes and the pipe joints are separated from the die heads on both sides of the heating mold 5. Then the lifting seat 4 descends, and then the first cylinder 3 extends again to sleeve the hot-melted water pipes and pipe joints, and the welding is completed after the water pipes and pipe joints are cooled. The multi-station automatic welding machine can realize the welding of water supply pipes of multiple branch water supply channels at one time, avoiding the problem that the opposite sides of the water pipes serving as branch water supply channels cannot be smoothly spliced ​​into one with the pipe joints due to the welding deviation between the water pipes and the pipe joints.

[0017] In order to facilitate the placement of the water pipe and the removal of the finished product after welding, the clamping cylinder 12 is a rotary clamping cylinder.

[0018] In this embodiment, a positioning bracket 22 is provided on the clamping die base 2, and a mold opening and closing cylinder 23 is fixed on the positioning bracket 22. The mold opening and closing cylinder 23 is located above the pipe joint positioning die 21. The pipe joint positioning die 21 includes an upper die 211 and a lower die 212. The upper die 211 and the lower die 212 are assembled one by one to form a pipe joint mold cavity. The three lower dies 212 are all fixed on the clamping die base 2. The three upper dies 211 are connected to the lifting plate 24, and the lifting plate 24 is fixed on the cylinder rod of the mold opening and closing cylinder 23. When the mold opening and closing cylinder 23 is retracted, the pipe joint mold cavity is opened, and the pipe joint can be taken in and put in. When the mold opening and closing cylinder 23 is extended, the pipe joint mold cavity is closed, and the pipe joint is positioned therein.

[0019] When welding of a water supply pipe with multiple branch water supply channels of different pipe lengths is not involved, the positions of the water pipe positioning mechanism 1, the lifting seat 4 and the first cylinder 3 can be fixed.

[0020] In this embodiment, in order to be suitable for the welding of water supply pipes with multiple branch water supply channels of different pipe lengths, the water pipe positioning mechanism 1 includes a first slide rail 13, on which two first sliding seats 14 are slidably arranged, and three groups of aligned water pipe positioning molds 11 are fixed on the two first sliding seats 14, and a clamping cylinder 12 is arranged on the first sliding seat 14, wherein a positioning seat 6 which can be moved and positioned along the direction of the first slide rail 13 is arranged on the outer side of one pipe joint positioning mold 21, while the first cylinder 3 on the other side is fixed, and the first cylinder 3 is arranged on the positioning seat 6, and the cylinder rod of the first cylinder 3 is connected to the clamping mold seat 2, and a second slide rail 7 is arranged parallel to the first slide rail 13, and a second sliding seat 8 is slidably arranged on the second slide rail 7, and a lifting cylinder 9 is arranged on the second sliding seat 8, and the cylinder rod of the lifting cylinder 9 is connected to the lifting seat 4. By adopting this structure, the spacing of the aligned water pipe positioning mold 11 can be adjusted by moving the first sliding seat 14 to achieve the positioning of water pipes of different lengths. The position of the heating mold 5 can be adjusted by moving the second sliding seat 8 to ensure that the heating mold 5 is located between the water pipe positioning mechanism and the pipe joint positioning mold after the lifting seat 4 rises. By moving at least one of the positioning seats 6, the initial spacing of the two clamping mold seats 2 can be adjusted, so that the multi-station automatic welding machine can be suitable for welding water supply pipes with multiple branch water supply channels of various pipe lengths. Before welding, according to the different pipe lengths, the positions of the first sliding seat 14, the second sliding seat 8 and the positioning seat 6 need to be adjusted first. After the adjustment is completed, the first sliding seat 14, the second sliding seat 8 and the positioning seat 6 can be fixed between the slide rails where they are located, or fixed to the frame 100, for example, by bolts.

[0021] In this embodiment, the positioning seat 6 is slidably disposed on the first slide rail 13 and can be fixed on the first slide rail 13. This structure allows the positioning seat 6 and the first slide seat 14 to share the slide rail, making the structure simpler and making the position of the positioning seat 6 easier to adjust.

[0022] In this embodiment, the clamping die base 2 is slidably disposed on the first slide rail 13. This structure allows the clamping die base 2 and the first slide base 14 to share the slide rail, making the structure simpler.

[0023] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-station automatic welding machine, characterized in that: The invention comprises a water pipe positioning mechanism (1), wherein the water pipe positioning mechanism (1) is provided with a plurality of water pipe positioning dies (11) arranged side by side and clamping cylinders (12) corresponding one to one with the water pipe positioning dies (11); clamping die seats (2) are provided at both ends of the water pipe positioning mechanism (1); the clamping die seats (2) are provided with a plurality of pipe joint positioning dies (21) aligned one to one with the water pipe positioning dies (11); the pipe joint positioning dies (21) have a connection opening facing the water pipe end face side; the clamping die seats (2) are connected with a first cylinder (3) reciprocating in the direction of the water pipe positioning dies (11); a lifting seat (4) is provided between the water pipe positioning mechanism (1) and the pipe joint positioning dies (21); the lifting seat (4) is provided with a plurality of heating dies (5); and die heads on both sides of the heating dies (5) face the water pipe end face and the connection opening.

2. A multi-station automatic welding machine as claimed in claim 1, characterized in that: The water pipe positioning mechanism (1) comprises a first slide rail (13), two first slide seats (14) are slidably arranged on the first slide rail (13), a plurality of groups of aligned water pipe positioning molds (11) are arranged on the two first slide seats (14), the clamping cylinder (12) is arranged on the first slide seat (14), a positioning seat (6) movable and positioned along the direction of the first slide rail (13) is arranged on the outer side of at least one of the pipe joint positioning molds (21), the first cylinder (3) is arranged on the positioning seat (6), the cylinder rod of the first cylinder (3) is connected to the clamping mold seat (2), a second slide rail (7) is arranged parallel to the first slide rail (13), a second slide seat (8) is slidably arranged on the second slide rail (7), a lifting cylinder (9) is arranged on the second slide seat (8), and the cylinder rod of the lifting cylinder (9) is connected to the lifting seat (4).

3. A multi-station automatic welding machine as claimed in claim 2, characterized in that: The positioning seat (6) is slidably disposed on the first slide rail (13) and can be fixed on the first slide rail (13).

4. A multi-station automatic welding machine as claimed in claim 2, characterized in that: The clamping cylinder (12) is a rotary clamping cylinder.

5. A multi-station automatic welding machine as claimed in claim 2, characterized in that: The clamping die seat (2) is slidably arranged on the first slide rail (13).

6. A multi-station automatic welding machine according to any one of claims 1 to 5, characterized in that: A positioning bracket (22) is provided on the clamping die base (2), and a mold opening and closing cylinder (23) is fixed on the positioning bracket (22). The plurality of pipe joint positioning dies (21) each comprise an upper die (211) and a lower die (212), and the upper die (211) and the lower die (212) are assembled in a one-to-one correspondence to form a pipe joint mold cavity. The plurality of lower dies (212) are fixed on the clamping die base (2), and the plurality of upper dies (211) are connected to a lifting plate (24), and the lifting plate (24) is fixed on a cylinder rod of the mold opening and closing cylinder (23).

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