Multi-cylinder tee joint cold forming hydraulic machine

Abstract

The utility model discloses a multi-cylinder three-way cold forming hydraulic machine which comprises a machine base and a machine frame fixedly arranged on the machine base. A main cylinder and a first auxiliary cylinder are arranged on the machine frame and jointly drive the upper die to move perpendicular to the machine base, and the cylinder diameter of the main cylinder is larger than that of the first auxiliary cylinder. A lower die is fixedly arranged on the machine base, and the upper die and the lower die are combined to form a main pipe forming through cavity. A first extrusion die and a second extrusion die are correspondingly arranged at the two ends of the main pipe forming through cavity respectively, and liquid outlets are formed in the first extrusion die and the second extrusion die respectively; a first side cylinder and a second auxiliary cylinder are arranged on the rack, the first side cylinder and the second auxiliary cylinder jointly drive the first extrusion die, and the cylinder diameter of the first side cylinder is larger than that of the second auxiliary cylinder; a second side cylinder and a third auxiliary cylinder are arranged on the rack, the second side cylinder and the third auxiliary cylinder jointly drive the second extrusion die, and the cylinder diameter of the second side cylinder is larger than that of the third auxiliary cylinder. The three-way machine can solve the problem that an existing three-way machine is low in response speed.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way pipe processing equipment, in particular to a multi-cylinder three-way cold forming hydraulic press. Background Art

[0002] The processing of large-diameter tee pipes requires the application of large-tonnage tee machines. The tee machine pressurizes the mold through a hydraulic cylinder to achieve the forming of the tee pipe.

[0003] The existing three-way machine hydraulic cylinder is controlled by a valve to control the hydraulic pump and the filling tank to supply pressure oil to the hydraulic cylinder's forward cylinder to achieve the hydraulic cylinder's forward movement; the hydraulic pump and the filling tank are controlled by a valve to supply pressure oil to the hydraulic cylinder's return cylinder to achieve the hydraulic cylinder's return. Because the three-way machine has a large structural weight and a large size of the hydraulic cylinder, multiple hydraulic pumps are required to supply oil to the hydraulic cylinder at the same time. Therefore, the existing three-way machine has the problem of slow response speed. Utility Model Content

[0004] The utility model provides a multi-cylinder three-way cold forming hydraulic press to solve the technical problem of slow response speed of the existing three-way press.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A multi-cylinder three-way cold forming hydraulic press comprises a machine base and a frame fixed on the machine base; a main cylinder and a first auxiliary cylinder are arranged on the frame, the main cylinder and the first auxiliary cylinder jointly drive an upper die to move perpendicularly to the machine base, and the cylinder diameter of the main cylinder is larger than the cylinder diameter of the first auxiliary cylinder; a lower die is fixed on the machine base, and the upper die and the lower die are combined to form a main pipe forming cavity; the two ends of the main pipe forming cavity correspond to a first extrusion die and a second extrusion die respectively, and liquid outlets are respectively provided on the first extrusion die and the second extrusion die; a first side cylinder and a second auxiliary cylinder are arranged on the frame, the first side cylinder and the second auxiliary cylinder jointly drive the first extrusion die, and the cylinder diameter of the first side cylinder is larger than the cylinder diameter of the second auxiliary cylinder; a second side cylinder and a third auxiliary cylinder are arranged on the frame, the second side cylinder and the third auxiliary cylinder jointly drive the second extrusion die, and the cylinder diameter of the second side cylinder is larger than the cylinder diameter of the third auxiliary cylinder.

[0007] Furthermore, there are two first auxiliary cylinders, two second auxiliary cylinders and two third auxiliary cylinders, the two first auxiliary cylinders are located on both sides of the main cylinder, the two second auxiliary cylinders are located on both sides of the first side cylinder, and the two third auxiliary cylinders are located on both sides of the second side cylinder.

[0008] Furthermore, one end of the main cylinder and the first auxiliary cylinder is fixed on the frame, and the other end is fixedly connected to a connecting seat, and the upper mold is installed on a side of the connecting seat away from the main cylinder.

[0009] Furthermore, one end of the first side cylinder and the second auxiliary cylinder is fixed on the frame, and the other end is fixedly connected to the first connecting plate, and the first extrusion die is installed on a side of the first connecting plate away from the first side cylinder.

[0010] Furthermore, it also includes a first guide assembly, which guides the first connecting plate along the axial direction of the main pipe forming cavity.

[0011] Furthermore, the first guide assembly includes: a guide rail, a mounting seat and a pulley; the guide rail is fixed on the machine base along the axial direction of the main pipe forming cavity, one end of the mounting seat is fixed on the first connecting plate, and the other end is rotatably provided with a pulley, and the pulley rolls along the guide rail.

[0012] Furthermore, the lower mold is provided with a branch pipe forming hole below the main pipe forming cavity, which is communicated with the main pipe forming cavity; the machine base is provided with an accommodating cavity, which is located below the lower mold, and a driving member is provided in the accommodating cavity, and a push rod is provided in the branch pipe forming hole, and the driving member drives the push rod to move along the axis of the branch pipe forming hole.

[0013] Beneficial effects:

[0014] The present application adds a first auxiliary cylinder, a second auxiliary cylinder and a third auxiliary cylinder. The cylinder diameter of the first auxiliary cylinder is smaller than that of the main cylinder, and the first auxiliary cylinder has low oil consumption and fast response speed. The first auxiliary cylinder drives the upper die to achieve rapid mold closing, and then the main cylinder is started so that the main cylinder and the first auxiliary cylinder pressurize the upper die. Similarly, the second auxiliary cylinder and the first side cylinder cooperate to achieve rapid movement of the first extrusion die, and the third auxiliary cylinder and the second side cylinder cooperate to achieve rapid movement of the second extrusion die. Therefore, the present application can solve the problem of slow response speed of the existing three-way machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of a multi-cylinder three-way cold forming hydraulic press disclosed in the utility model;

[0017] Figure 2 The utility model discloses a top view of a multi-cylinder three-way cold forming hydraulic press.

[0018] 1. Machine base; 2. Machine frame; 31. Main cylinder; 32. First auxiliary cylinder; 33. Connecting seat; 4. Upper die; 5. Lower die; 61. First extrusion die; 62. First side cylinder; 63. Second auxiliary cylinder; 64. First connecting plate; 71. Second extrusion die; 72. Second side cylinder; 73. Third auxiliary cylinder; 74. Second connecting plate; 81. Guide rail; 82. Mounting seat; 83. Pulley; 91. Driving member; 92. Push rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] A multi-cylinder three-way cold forming hydraulic press, combined with Figure 1 and Figure 2As shown, it includes a machine base 1 and a frame 2 fixed on the machine base 1, and the machine base 1 and the frame 2 are an integrated structure. The frame 2 is provided with a main cylinder 31 and a first auxiliary cylinder 32, and the main cylinder 31 and the first auxiliary cylinder 32 are installed on the frame 2 in parallel and at intervals. The main cylinder 31 and the first auxiliary cylinder 32 jointly drive the upper mold 4 to move perpendicular to the machine base 1 to realize the opening and closing of the upper mold 4 and pressurization; the cylinder diameter of the main cylinder 31 is larger than the cylinder diameter of the first auxiliary cylinder 32, and the cylinder diameter ratio of the two can be designed according to the tonnage of the actual three-way hydraulic press, so that the oil consumption of the first auxiliary cylinder 32 is less than that of the main cylinder 31, and the response speed of the first auxiliary cylinder 32 is faster than that of the main cylinder 31. A lower mold 5 is fixed on the machine base 1, and the upper mold 4 and the lower mold 5 are combined to form a main pipe forming cavity for the molding of the three-way pipe main pipe. The two ends of the main pipe forming cavity correspond to the first extrusion die 61 and the second extrusion die 71, respectively. The first extrusion die 61 and the second extrusion die 71 are respectively provided with liquid outlets for blocking the two ends of the main pipe forming cavity and injecting liquid into the main pipe forming cavity. The frame 2 is provided with a first side cylinder 62 and a second auxiliary cylinder 63, which jointly drive the first extrusion die 61 to achieve the advance and retreat of the first extrusion die 61; the cylinder diameter of the first side cylinder 62 is larger than the cylinder diameter of the second auxiliary cylinder 63, and the cylinder diameter ratio of the two can be designed according to the tonnage of the actual three-way hydraulic press, so that the oil consumption of the second auxiliary cylinder 63 is less than that of the first side cylinder 62, so that the response speed of the second auxiliary cylinder 63 is faster than that of the first side cylinder 62. A second side cylinder 72 and a third auxiliary cylinder 73 are provided on the frame 2, and the second side cylinder 72 and the third auxiliary cylinder 73 jointly drive the second extrusion die 71 to realize the advance and retreat of the second extrusion die 71; the cylinder diameter of the second side cylinder 72 is larger than the cylinder diameter of the third auxiliary cylinder 73, and the cylinder diameter ratio of the two can be designed according to the tonnage of the actual three-way hydraulic press, so that the oil consumption of the third auxiliary cylinder 73 is less than that of the second side cylinder 72, so that the response speed of the third auxiliary cylinder 73 is faster than the response speed of the second side cylinder 72.

[0021] The first auxiliary cylinder 32 is added to drive the upper die 4 together with the main cylinder 31. Because the first auxiliary cylinder 32 has a small oil consumption and a fast response speed, the upper die 4 is driven by the first auxiliary cylinder 32 to achieve rapid mold closing, and the main cylinder 31 is synchronously extended and retracted under the drive of the first auxiliary cylinder 32. At this time, restarting the main cylinder 31 can speed up the speed of oil in and out of the main cylinder 31 and improve the response speed of the main cylinder 31. Similar to the coordination relationship between the first auxiliary cylinder 32 and the main cylinder 31, the second auxiliary cylinder 63 and the first side cylinder 62 cooperate to achieve the rapid movement of the first extrusion die 61, and the third auxiliary cylinder 73 and the second side cylinder 72 cooperate to achieve the rapid movement of the second extrusion die 71. Therefore, the multi-cylinder three-way cold forming hydraulic press can solve the problem of slow response speed of the working cylinders such as the main cylinder 31, the first side cylinder 62, and the second side cylinder 72 of the existing three-way machine, thereby improving the production efficiency of the three-way cold forming hydraulic press.

[0022] Preferably, there are two first auxiliary cylinders 32, two second auxiliary cylinders 63 and three auxiliary cylinders 73, and the two first auxiliary cylinders 32 are located on both sides of the main cylinder 31, so that the driving force of the upper die 4 is more evenly distributed. The two second auxiliary cylinders 63 are located on both sides of the first side cylinder 62, so that the driving force of the first extrusion die 61 is more evenly distributed. The two third auxiliary cylinders 73 are located on both sides of the second side cylinder 72, so that the driving force of the second extrusion die 71 is more evenly distributed.

[0023] Preferably, one end of the main cylinder 31 and the first auxiliary cylinder 32 is fixed on the frame 2, and the other end is fixedly connected to the connecting seat 33 through a flange structure. The upper mold 4 is installed on the side of the connecting seat 33 away from the main cylinder 31. The main cylinder 31 and the first auxiliary cylinder 32 apply driving force to the upper mold 4 through the connecting seat 33. At the same time, the first auxiliary cylinder 32 also drives the piston rod of the main cylinder 31 to move through the connecting seat 33.

[0024] Specifically, the master cylinder 31 is provided with a positioning section and a threaded section, and the frame 2 is provided with a mounting hole. The cylinder body of the master cylinder 31 passes through the mounting hole, and the positioning section abuts against the end face of the mounting hole. The threaded section extends out of the mounting hole and is connected to a clamping screw ring, which abuts against the end face of the mounting hole away from the positioning section after being tightened, thereby fixing the cylinder body of the master cylinder 31 on the frame 2. The fixing method of the cylinder body of the first auxiliary cylinder 32 is the same as that of the cylinder body of the master cylinder 31, and will not be repeated here.

[0025] Preferably, one end of the first side cylinder 62 and the second auxiliary cylinder 63 is fixed on the frame 2, and the other end is fixedly connected to the first connecting plate 64, and the first extrusion die 61 is installed on the side of the first connecting plate 64 away from the first side cylinder 62. The first side cylinder 62 and the second auxiliary cylinder 63 apply driving force to the first extrusion die 61 through the first connecting plate 64, and at the same time, the second auxiliary cylinder 63 drives the piston rod of the first side cylinder 62 to move through the first connecting plate 64.

[0026] Specifically, one end of the second side cylinder 72 and the third auxiliary cylinder 73 is fixed on the frame 2, and the other end is fixedly connected to the second connecting plate 74, and the second extrusion die 71 is installed on the side of the second connecting plate 74 away from the second side cylinder 72. The second side cylinder 72 and the third auxiliary cylinder 73 apply driving force to the second extrusion die 71 through the second connecting plate 74, and the third auxiliary cylinder 73 drives the piston rod of the second side cylinder 72 to move through the second connecting plate 74.

[0027] Preferably, a first guide assembly is further included, and the first guide assembly guides the first connecting plate 64 along the axial direction of the main pipe forming cavity to ensure the movement accuracy of the first extrusion die 61 .

[0028] Preferably, the first guide assembly includes: a guide rail 81, a mounting seat 82 and a pulley 83; the guide rail 81 is fixed on the machine base 1 by a first screw group along the axial direction of the main tube forming cavity. One end of the mounting seat 82 is fixed on the first connecting plate 64 by a second screw group, and the other end is rotatably provided with a pulley 83, and the pulley 83 rolls along the guide rail 81. The first guide assembly guides the first connecting plate 64 along the axial direction of the main tube forming cavity, and supports the first connecting plate 64, thereby ensuring the motion accuracy of the first extrusion die 61.

[0029] Specifically, it also includes a second guide assembly, which guides the second connecting plate 74 to ensure the movement accuracy of the second extrusion die 71. The second guide assembly has the same structure as the first guide assembly, and will not be described in detail here.

[0030] Preferably, the lower die 5 is provided with a branch tube forming hole communicating with the main tube forming cavity below the main tube forming cavity; the machine base 1 is provided with a receiving cavity, the receiving cavity is located below the lower die 5, and a driving member 91 is provided in the receiving cavity, and the driving member 91 is a hydraulic cylinder. A push rod 92 is provided in the branch tube forming hole, and the outer diameter of the push rod 92 matches the aperture of the branch tube forming hole. The driving member 91 drives the push rod 92 to move along the axis of the branch tube forming hole. When the three-way tube is formed, the driving member 91 drives the push rod 92 to eject the three-way tube.

[0031] Working principle of this application device:

[0032] The first auxiliary cylinder 32 is started, and the first auxiliary cylinder 32 synchronously drives the connecting seat 33 and the upper mold 4 to achieve mold closing. The connecting seat 33 drives the piston rod of the main cylinder 31 to move, and oil is injected into the main cylinder 31 at this time. The second auxiliary cylinder 63 and the third auxiliary cylinder 73 are started, and the second auxiliary cylinder 63 synchronously drives the first connecting plate 64 and the first extrusion die 61 to achieve feeding into the main tube molding cavity, and oil is injected into the first side cylinder 62 at this time. The third auxiliary cylinder 73 synchronously drives the second connecting plate 74 and the second extrusion die 71 to achieve feeding into the main tube molding cavity, and oil is injected into the second side cylinder 72 at this time. The main cylinder 31, the first side cylinder 62 and the second side cylinder 72 continue to inject oil until they start to respond, the first auxiliary cylinder 32 and the main cylinder 31 pressurize the upper mold 4, the second auxiliary cylinder 63 and the first side cylinder 62 pressurize the first extrusion die 61, and the third auxiliary cylinder 73 and the second side cylinder 72 pressurize the second extrusion die 71. The first extrusion die 61 and the second extrusion die 71 inject liquid into the main molding cavity through their respective liquid outlets to pressurize the three-way pipe. After the molding is completed, the first auxiliary cylinder 32 drives the upper mold 4 to open the mold, the second auxiliary cylinder 63 drives the first extrusion die 61 to retract, and the third auxiliary cylinder 73 drives the second extrusion die 71 to retract. The driving member 91 drives the ejector rod 92 to eject the molded three-way pipe.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A multi-cylinder three-way cold forming hydraulic press, characterized in that: The invention comprises a machine base (1) and a frame (2) fixed on the machine base (1); a main cylinder (31) and a first auxiliary cylinder (32) are arranged on the frame (2); the main cylinder (31) and the first auxiliary cylinder (32) jointly drive an upper die (4) to move perpendicularly to the machine base (1); the cylinder diameter of the main cylinder (31) is larger than the cylinder diameter of the first auxiliary cylinder (32); a lower die (5) is fixed on the machine base (1); the upper die (4) and the lower die (5) are combined to form a main pipe forming cavity; two ends of the main pipe forming cavity correspond to a first extrusion die (61) and a second extrusion die (71), the first extrusion die (61) and the second extrusion die (71) respectively. The second extrusion die (71) is respectively provided with a liquid outlet; the frame (2) is provided with a first side cylinder (62) and a second auxiliary cylinder (63), the first side cylinder (62) and the second auxiliary cylinder (63) jointly drive the first extrusion die (61), and the cylinder diameter of the first side cylinder (62) is larger than the cylinder diameter of the second auxiliary cylinder (63); the frame (2) is provided with a second side cylinder (72) and a third auxiliary cylinder (73), the second side cylinder (72) and the third auxiliary cylinder (73) jointly drive the second extrusion die (71), and the cylinder diameter of the second side cylinder (72) is larger than the cylinder diameter of the third auxiliary cylinder (73).

2. A multi-cylinder three-way cold forming hydraulic press according to claim 1, characterized in that: There are two of each of the first auxiliary cylinder (32), the second auxiliary cylinder (63) and the third auxiliary cylinder (73). The two first auxiliary cylinders (32) are located on both sides of the main cylinder (31), the two second auxiliary cylinders (63) are located on both sides of the first side cylinder (62), and the two third auxiliary cylinders (73) are located on both sides of the second side cylinder (72).

3. A multi-cylinder three-way cold forming hydraulic press according to claim 1, characterized in that: One end of the main cylinder (31) and the first auxiliary cylinder (32) is fixed on the frame (2), and the other end is fixedly connected to a connecting seat (33), and the upper mold (4) is installed on a side of the connecting seat (33) away from the main cylinder (31).

4. A multi-cylinder three-way cold forming hydraulic press according to claim 1, characterized in that: One end of the first side cylinder (62) and the second auxiliary cylinder (63) is fixed on the frame (2), and the other end is fixedly connected to a first connecting plate (64), and the first extrusion die (61) is installed on a side of the first connecting plate (64) away from the first side cylinder (62).

5. A multi-cylinder three-way cold forming hydraulic press according to claim 4, characterized in that: It also includes a first guide assembly, which guides the first connecting plate (64) along the axial direction of the main pipe forming cavity.

6. A multi-cylinder three-way cold forming hydraulic press according to claim 5, characterized in that: The first guide assembly comprises: a guide rail (81), a mounting seat (82) and a pulley (83); the guide rail (81) is fixedly mounted on the machine base (1) along the axial direction of the main pipe forming cavity; one end of the mounting seat (82) is fixedly mounted on the first connecting plate (64) and the other end is rotatably mounted on the pulley (83); the pulley (83) rolls along the guide rail (81).

7. A multi-cylinder three-way cold forming hydraulic press according to claim 1, characterized in that: The lower die (5) is provided with a branch pipe forming hole below the main pipe forming cavity and communicates with the main pipe forming cavity; the machine base (1) is provided with a receiving cavity, the receiving cavity is located below the lower die (5), a driving member (91) is provided in the receiving cavity, a push rod (92) is provided in the branch pipe forming hole, and the driving member (91) drives the push rod (92) to move along the axis of the branch pipe forming hole.

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