Secondary filling device

Abstract

The utility model discloses a secondary filling device which comprises a jig and a filling assembly, the jig is used for placing a pipe blank, the filling assembly comprises a heating mechanism, a liquid outlet mechanism and a filling distance adjusting mechanism, the heating mechanism is provided with a tank body used for heating molten metal, the liquid outlet mechanism comprises a liquid outlet nozzle and a plugging rod, the plugging rod can open and close the liquid outlet nozzle, and the filling distance adjusting mechanism is used for adjusting the filling distance. The filling distance adjusting mechanism comprises an ejector rod, the ejector rod is located at the bottom end of the pipe blank, the ejector rod can promote the pipe blank to be upwards close to the liquid outlet nozzle, during first-time filling, a distance is reserved between the top end of the pipe blank and the liquid outlet nozzle, air exhaust is facilitated, during second-time filling, the top end of the pipe blank abuts against the liquid outlet nozzle, the filling action is executed twice, and the filling efficiency is improved. And air can be exhausted during filling, internal residual air is reduced, molten metal filling is more full, and therefore the filling quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filling, and particularly relates to a secondary filling device. Background Art

[0002] The hydraulic bulging of a tee is a forming process that expands a branch pipe through axial compensation of a metal material. Before hydraulic bulging, it is necessary to fill the metal liquid into the tube blank.

[0003] The related filling technology is as follows: after the tube blank contacts the filling nozzle, the metal liquid is filled once. Because the tube blank is in contact connection with the filling nozzle, during the filling process, the air in the tube blank is difficult to discharge outward, resulting in more residual air in the tube blank and affecting the filling quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a secondary filling device, in which the filling action is performed in two times, so that the air can be discharged during filling, the internal residual air is reduced, the metal liquid filling is more substantial, and thus the filling quality is improved.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A secondary filling device includes a jig and a filling assembly.

[0007] The jig is used to place the tube blank.

[0008] The filling assembly includes a heating mechanism, a liquid discharging mechanism and a filling distance adjusting mechanism.

[0009] The heating mechanism is provided with a tank for heating the metal liquid.

[0010] The liquid discharging mechanism includes a liquid discharging nozzle and a plugging rod, and the plugging rod can open and close the liquid discharging nozzle.

[0011] The filling distance adjusting mechanism includes a top rod, the top rod is located at the bottom end of the tube blank, and the top rod can urge the tube blank to move upward close to the liquid discharging nozzle. During the first filling, there is a distance between the top end of the tube blank and the liquid discharging nozzle. During the second filling, the top end of the tube blank is in contact with the liquid discharging nozzle.

[0012] In some embodiments, during the first filling, the distance between the top end of the tube blank and the liquid discharging nozzle is between 50 microns and 1.0 millimeter.

[0013] In some embodiments, when the first filling is completed, the filling amount of the metal liquid inside the tube blank exceeds 80%.

[0014] In some embodiments, when the first filling is completed, the distance between the liquid level of the metal liquid inside the tube blank and the top end of the tube blank is less than 1.5 centimeters.

[0015] In some embodiments, the filling distance adjusting mechanism further includes a pushing plate, a first stroke driving member, and a second stroke driving member;

[0016] The pushing plate is disposed below the ejector rod;

[0017] Both the first stroke driving member and the second stroke driving member are disposed below the pushing plate;

[0018] During the first filling, the first stroke driving member drives the ejector rod to move;

[0019] During the second filling, the second stroke driving member drives the ejector rod to move.

[0020] In some embodiments, the liquid outlet nozzle includes a liquid outlet flow channel and a conical cavity;

[0021] The plugging rod is provided with a plugging portion and a conical portion; the plugging portion is matched with the liquid outlet flow channel, and the conical portion is matched with the conical cavity;

[0022] The plugging rod can close the liquid outlet flow channel in a freely falling manner.

[0023] In some embodiments, the liquid outlet mechanism further includes a gravity block and a lifting mechanism;

[0024] The lifting mechanism drives the plugging rod to move upward, thereby opening the liquid outlet flow channel;

[0025] The gravity block drives the plugging rod to move downward by gravity, thereby closing the liquid outlet flow channel.

[0026] In some embodiments, the lifting mechanism includes a lifting force receiving block, a lifting bracket, and a lifting cylinder;

[0027] The lifting force receiving block is connected to the plugging rod;

[0028] The lifting bracket is disposed below the lifting force receiving block, and the lifting bracket is provided with a slot capable of accommodating the plugging rod;

[0029] The output end of the lifting cylinder is connected to the lifting bracket.

[0030] In some embodiments, the heating mechanism further includes a heating rod and a float disposed inside the tank body.

[0031] In some embodiments, it further includes a clamping and separating assembly. When the second filling is completed, the clamping and separating assembly can cause the top end of the tube blank to move away from the liquid outlet nozzle.

[0032] The beneficial effects of the utility model are as follows: during the first filling, a distance is left between the top of the tube blank and the liquid outlet nozzle, so that the air can be discharged; during the second filling, the top of the tube blank contacts the liquid outlet nozzle, thereby completing the entire filling. Therefore, the filling action is performed twice, so that the air can be discharged during the filling, reducing the internal residual air, making the metal liquid filling more substantial, thereby improving the filling quality;

[0033] In addition, the plugging rod closes the liquid outlet in a free-falling manner, which helps to reduce wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an axonometric diagram of a secondary filling device of the utility model;

[0035] Figure 2 This is a front view of a secondary filling device of the utility model;

[0036] Figure 3 This is a structural diagram of the filling distance adjustment mechanism of the utility model;

[0037] Figure 4 It is a structural diagram of the liquid outlet mechanism of the utility model;

[0038] Figure 5 It is a cross-sectional structural diagram of the liquid outlet nozzle and the plugging rod of the utility model;

[0039] Figure 6 It is a structural diagram of the heating mechanism of the utility model;

[0040] Figure 7 It is a schematic diagram of the first filling of the utility model;

[0041] Figure 8 It is a schematic diagram of the second filling of the utility model;

[0042] Figure 9 It is a structural diagram of the clamping assembly of the utility model;

[0043] Figure 10 It is a schematic diagram of the action of the clamping assembly of the utility model;

[0044] Wherein: 31 - jig; 5 - filling assembly; 51 - heating mechanism; 511 - tank body; 512 - heating rod; 513 - float ball; 52 - liquid discharging mechanism; 521 - liquid discharging nozzle; 5210 - liquid discharging flow channel; 5211 - conical cavity; 522 - plugging rod; 5220 - plugging part; 5221 - conical part; 523 - gravity block; 524 - first rod body; 525 - lifting mechanism; 5250 - lifting force-receiving block; 5251 - lifting bracket; 52510 - slot hole; 5252 - lifting cylinder; 5253 - lifting connecting rod; 5254 - first guide rail; 5255 - first slider; 5256 - bridging block; 53 - filling distance adjusting mechanism; 530 - ejector rod; 531 - pushing plate; 532a - first stroke driving part; 532b - second stroke driving part; 533 - second guide rail; 534 - second slider; 6 - clamping and separating assembly; 61 - finger cylinder; 611 - fixture; 62 - lifting cylinder; 63 - third guide rail; 64 - third slider; 8 - tube blank; 9 - molten metal. Detailed implementation mode

[0045] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0046] Refer to Figures 1 to 10 , a secondary filling device, including a jig 31 and a filling assembly 5,

[0047] The jig 31 is used for placing the tube blank 8. The tube blank 8 can be a pipe such as a copper pipe. The jig 31 can be in a cylindrical or columnar shape, with a through hole in the middle. The tube blank 8 can be slidably inserted into the through hole, and the tube blank 8 can stay or be fixed at a preset position by relying on the friction between the two. The jig 31 can be arranged on a turntable so that the tube blank 8 is fed to the filling assembly 5 in an orderly manner;

[0048] The filling assembly 5 includes a heating mechanism 51, a liquid discharging mechanism 52 and a filling distance adjusting mechanism 53;

[0049] The heating mechanism 51 is provided with a tank body 511 for heating the molten metal 9;

[0050] The liquid discharging mechanism 52 includes a liquid discharging nozzle 521 and a plugging rod 522. The liquid discharging nozzle 521 is arranged on the bottom wall of the tank body 511, and the plugging rod 522 can open and close the liquid discharging nozzle 521;

[0051] Refer to Figure 7 And Figure 8 , the filling distance adjusting mechanism 53 includes an ejector rod 530. The ejector rod 530 is located at the bottom end of the tube blank 8. The ejector rod 530 can urge the tube blank 8 to move upward close to the liquid discharging nozzle 521. During the first filling, there is a distance between the top end of the tube blank 8 and the liquid discharging nozzle 521. During the second filling, the top end of the tube blank 8 abuts against the liquid discharging nozzle 521;

[0052] During the first filling, there is a distance between the top of the tube blank 8 and the liquid outlet nozzle 521. When the molten metal 9 is filled into the tube blank 8, the air in the tube blank 8 can be discharged outward through the gap formed by the distance, thereby reducing the internal residual air and making the molten metal 9 filled more fully. After completing the first filling, the tube blank 8 continues to move upward, and the top of the tube blank 8 collides with the liquid outlet nozzle 521. During this period, the tube blank 8 is continuously filled with the molten metal 9 until the molten metal 9 fills the entire tube blank 8, thereby completing the second filling, and then completing the filling of the entire tube blank 8. Therefore, the filling action is performed in two times, so that the air can be discharged during filling, reducing the internal residual air, and making the molten metal 9 filled more fully, thereby improving the filling quality.

[0053] refer to Figure 7 During the first filling, the distance D between the top of the tube blank 8 and the liquid outlet nozzle 521 is between 50 micrometers and 1.0 millimeters.

[0054] refer to Figure 7 When the first filling is completed, the filling amount of the internal metal liquid 9 of the tube blank 8 exceeds 80%, that is, it has reached more than 80% of the internal volume of the tube blank 8, for example, between 80% and 90%;

[0055] Or when the first filling is completed, the distance H between the liquid level of the molten metal 9 inside the tube blank 8 and the top of the tube blank 8 is less than 1.5 cm, for example, between 1.0 cm and 1.5 cm; thus, in the first filling, most of the molten metal 9 has been filled into the tube blank 8, so that the air can be discharged as much as possible, thereby improving the filling quality.

[0056] refer to Figure 3 The filling distance adjustment mechanism 53 further includes a push plate 531, a first stroke driving member 532a and a second stroke driving member 532b;

[0057] The push plate 531 is disposed below the push rod 530;

[0058] The first stroke driving member 532a and the second stroke driving member 532b are both disposed below the push plate 531;

[0059] During the first filling, the first stroke driving member 532a drives the ejector rod 530 to move;

[0060] During the second filling, the second stroke driving member 532b drives the ejector rod 530 to move;

[0061] The stroke of the second stroke driving member 532b is greater than the stroke of the first stroke driving member 532a; the first stroke driving member 532a and the second stroke driving member 532b can both be structures such as cylinders, electric push rods or cams;

[0062] The pushing plate 531 can be connected to the second slider 534, and the second slider 534 is connected to the second guide rail 533 to improve the stability and accuracy of movement.

[0063] Reference Figure 5 , the liquid outlet nozzle 521 includes a liquid outlet flow channel 5210 and a conical cavity 5211;

[0064] The plugging rod 522 is provided with a plugging portion 5220 and a conical portion 5221; the plugging portion 5220 cooperates with the liquid outlet flow channel 5210 to realize the opening and closing of the liquid outlet nozzle 521, and the conical portion 5221 cooperates with the conical cavity 5211; both the conical portion 5221 and the conical cavity 5211 have a conical inclined surface structure, and the guiding and aligning effects are realized through this conical inclined surface structure, so that the plugging portion 5220 can accurately insert into the liquid outlet flow channel 5210;

[0065] The plugging rod 522 can close the liquid outlet flow channel 5210 in a free-falling manner. For example, the plugging rod 522 can move downward under the action of gravity to close the liquid outlet flow channel 5210. Compared with mechanical powers such as cylinders and lead screws, the impact force formed by free-falling methods such as gravity is smaller and more gentle, and can reduce wear such as impact and friction, that is, reduce the impact force between the plugging portion 5220 and the liquid outlet flow channel 5210, and reduce the impact force between the conical portion 5221 and the conical cavity 5211, thereby improving the service life.

[0066] Reference Figure 4 , the liquid outlet mechanism 52 further includes a gravity block 523 and a lifting mechanism 525;

[0067] The lifting mechanism 525 drives the plugging rod 522 to move upward to open the liquid outlet flow channel 5210;

[0068] The gravity block 523 is sleeved on the plugging rod 522, and the gravity block 523 drives the plugging rod 522 to move downward by gravity to close the liquid outlet flow channel 5210.

[0069] The lifting mechanism 525 includes a lifting force-receiving block 5250, a lifting bracket 5251 and a lifting cylinder 5252;

[0070] The lifting force-receiving block 5250 is connected to the plugging rod 522; the lifting force-receiving block 5250 can be sleeved on the plugging rod 522;

[0071] The lifting bracket 5251 is arranged below the lifting force-receiving block 5250, and the lifting bracket 5251 is provided with a slot hole 52510 capable of accommodating the plugging rod 522; the slot hole 52510 can be a U-shaped hole or a strip-shaped hole, and one end of the slot hole 52510 is an open structure;

[0072] The output end of the lifting cylinder 5252 is connected to the lifting bracket 5251;

[0073] The lifting cylinder 5252 drives the lifting bracket 5251 to move upward, thereby driving the plugging rod 522 to move upward and opening the liquid outlet nozzle 521; when the filling is completed, the lifting cylinder 5252 stops working, and the gravity block 523 drives the plugging rod 522 to move downward by gravity, closing the liquid outlet nozzle 521.

[0074] Further, the lifting bracket 5251 can be L-shaped. The lifting bracket 5251 is connected to the first slider 5255, the first slider 5255 is connected to the first guide rail 5254, the top of the first guide rail 5254 is provided with a lifting cylinder 5252, and the lifting cylinder 5252 is connected to the lifting bracket 5251 through a lifting connecting rod 5253.

[0075] The plugging rod 522 is connected to a first rod body 524. The first guide rail 5254 is provided with a bridging block 5256. Both the first rod body 524 and the lifting connecting rod 5253 are slidably connected to the bridging block 5256 to achieve a certain limiting and guiding effect.

[0076] Reference Figure 6 Referring to , the heating mechanism 51 further includes a heating rod 512 and a floating ball 513 disposed inside the tank body 511. The heating rod 512 heats the molten metal 9, and the floating ball 513 is used to detect the liquid level height of the molten metal 9.

[0077] Reference Figure 9 And Figure 10 Also included is a clamping and separating assembly 6. After the second filling is completed, the clamping and separating assembly 6 can cause the top end of the tube blank 8 to move away from the liquid outlet nozzle 521, separating the tube blank 8 from the liquid outlet nozzle 521.

[0078] After the filling is completed, the molten metal 9 cools down, which will cause the molten metal 9 to adhere to the liquid outlet nozzle 521. The clamping and separating assembly 6 drives the tube blank 8 to move downward, thereby separating it from the liquid outlet nozzle 521, facilitating the subsequent blanking of the tube blank 8.

[0079] Further, the clamping and separating assembly 6 includes a finger cylinder 61 and a lifting cylinder 62. The finger cylinder 61 is provided with a clamp 611 capable of clamping the tube blank 8. The output end of the lifting cylinder 62 is connected to the finger cylinder 61 to drive the finger cylinder 61 to move up and down; after the clamp 611 clamps the tube blank 8, the lifting cylinder 62 drives the finger cylinder 61 to move downward, thereby separating the tube blank 8 from the liquid outlet nozzle 521.

[0080] The finger cylinder 61 is connected to a third slider 64, and the third slider 64 is connected to a third guide rail 63, thereby improving the stability and accuracy of the movement.

[0081] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the utility model.

Claims

1. A secondary filling device, characterized in that: It comprises a jig (31) and a filling component (5), The jig (31) is used to place the tube blank (8); The filling assembly (5) comprises a heating mechanism (51), a liquid discharge mechanism (52) and a filling distance adjustment mechanism (53); The heating mechanism (51) is provided with a tank body (511) for heating the molten metal (9); The liquid outlet mechanism (52) comprises a liquid outlet nozzle (521) and a blocking rod (522), and the blocking rod (522) can open and close the liquid outlet nozzle (521); The filling distance adjustment mechanism (53) comprises a push rod (530), wherein the push rod (530) is located at the bottom end of the tube blank (8), and the push rod (530) can push the tube blank (8) upward to approach the liquid outlet nozzle (521). During the first filling, a distance is left between the top end of the tube blank (8) and the liquid outlet nozzle (521), and during the second filling, the top end of the tube blank (8) is in conflict with the liquid outlet nozzle (521).

2. A secondary filling device according to claim 1, characterized in that: During the first filling, the distance (D) between the top of the tube blank (8) and the liquid outlet nozzle (521) is between 50 micrometers and 1.0 millimeters.

3. A secondary filling device according to claim 2, characterized in that: When the first filling is completed, the filling amount of the internal metal liquid (9) of the tube blank (8) exceeds 80%.

4. A secondary filling device according to claim 2, characterized in that: When the first filling is completed, the distance (H) between the liquid level of the molten metal (9) inside the tube blank (8) and the top of the tube blank (8) is less than 1.5 centimeters.

5. A secondary filling device according to claim 1, characterized in that: The filling distance adjustment mechanism (53) further comprises a push plate (531), a first stroke driving member (532a) and a second stroke driving member (532b); The push plate (531) is arranged below the push rod (530); The first stroke driving member (532a) and the second stroke driving member (532b) are both arranged below the push plate (531); During the first filling, the first stroke driving member (532a) drives the ejector rod (530) to move; During the second filling, the second stroke driving member (532b) drives the ejector rod (530) to move.

6. A secondary filling device according to claim 1, characterized in that: The liquid outlet nozzle (521) comprises a liquid outlet channel (5210) and a tapered cavity (5211); The blocking rod (522) is provided with a blocking portion (5220) and a tapered portion (5221); the blocking portion (5220) matches with the liquid outlet channel (5210), and the tapered portion (5221) matches with the tapered cavity (5211); The blocking rod (522) can close the liquid outlet channel (5210) in a free-falling manner.

7. A secondary filling device according to claim 6, characterized in that: The liquid outlet mechanism (52) further comprises a gravity block (523) and a lifting mechanism (525); The lifting mechanism (525) drives the blocking rod (522) to move upward, thereby opening the liquid outlet channel (5210); The gravity block (523) drives the blocking rod (522) to move downward by gravity, thereby closing the liquid outlet channel (5210).

8. A secondary filling device according to claim 7, characterized in that: The lifting mechanism (525) includes a lifting force block (5250), a lifting bracket (5251) and a lifting cylinder (5252); The lifting force-bearing block (5250) is connected to the blocking rod (522); The lifting bracket (5251) is arranged below the lifting force-bearing block (5250), and the lifting bracket (5251) is provided with a slot hole (52510) capable of accommodating the blocking rod (522); The output end of the lifting cylinder (5252) is connected to the lifting bracket (5251).

9. A secondary filling device according to claim 1, characterized in that: The heating mechanism (51) further comprises a heating rod (512) and a floating ball (513) which are arranged inside the tank body (511).

10. A secondary filling device according to claim 1, characterized in that: It also includes a clamping assembly (6) which can push the top end of the tube blank (8) away from the liquid outlet nozzle (521) when the second filling is completed.

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