A quick adjustment device for a pull rod

Abstract

The invention discloses a quick adjustment device for a core rod of a trolley, comprising a core rod and a tailstock welded vertically upward on the bed of a horizontal trolley, wherein a U-shaped groove with a notch facing upward is provided at the top of the tailstock along the length direction of the bed, and an inclined groove with the same width as the notch of the U-shaped groove and inclined upward is provided below the U-shaped groove along the length direction of the bed; a hollow external threaded tube with the same outer diameter as the notch width and the external threaded tube is clamped in the notch of the U-shaped groove and the inclined groove, and the external threaded tube is located on the left and right sides of the notch and is respectively threadedly connected with a left large nut and a right large nut; the tail end of the core rod passes through the center hole of the external threaded tube and is threadedly connected with a nut for preventing the core rod from being pulled out of the external threaded tube. The invention can not only realize the simultaneous fixing of multiple core rods, thereby improving the efficiency of drawing aluminum alloy tubes, but also conveniently realize the rapid adjustment of the front and rear positions of the core head and the rapid replacement of core rods of different specifications, further improving the efficiency of drawing aluminum alloy tubes.

Description

Technical Field

[0001] The invention relates to the technical field of cold processing of aluminum and aluminum alloys, and in particular to a quick adjustment device for a core rod of a drawing machine. Background Art

[0002] When using a horizontal drawing machine to draw aluminum alloy tubes, in order to ensure that the core head sizing position connected to the core rod head matches the outer die, it is necessary to adjust the position of the core head by adjusting the length of the core rod; at the same time, according to the drawing specifications, it is sometimes necessary to replace the core rod with a suitable diameter to ensure the drawing effect.

[0003] The current device for adjusting the core rod position or replacing the core rod used in the trolley is complicated and time-consuming to operate, and the changeover time is long, which affects the production efficiency. Therefore, being able to simply and conveniently adjust the core rod position or replace the core rod is a problem that the technicians in this field need to solve urgently at this stage. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a quick adjustment device for a core rod of a pulling cart, which can simply and conveniently adjust the position of the core rod or replace the core rod, thereby saving changeover time and increasing production efficiency.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0006] A quick adjustment device for a trolley core rod comprises a core rod and a tail stock welded vertically upward on the bed of a horizontal trolley, wherein a U-shaped groove with an opening facing upward is provided at the top of the tail stock along the length direction of the bed, and an inclined groove with the same width as the opening of the U-shaped groove and inclined upward is provided below the U-shaped groove along the length direction of the bed; hollow externally threaded tubes with an outer diameter the same as the opening width and a hollow externally threaded tube are clamped in the openings of the U-shaped groove and the inclined groove, and the externally threaded tubes are located on the left and right sides of the opening and are respectively threadedly connected with a left large nut and a right large nut through the external threads provided on the externally threaded tubes; the tail end of the core rod passes through the center hole of the externally threaded tube and is threadedly connected to a nut for preventing the core rod from being pulled out of the externally threaded tube through the threads provided at the tail.

[0007] Preferably, the bottom end side surface of the inclined groove and the side surface of the U-shaped groove away from the opening of the inclined groove are located in the same vertical plane.

[0008] Preferably, the inclination angle of the chute is 30°~60°.

[0009] Preferably, the externally threaded tube is a group of externally threaded tubes whose inner diameters are adapted to core rods of different outer diameters.

[0010] Preferably, the nut is disposed against the port of the externally threaded pipe, and the outer diameter of the nut is larger than the diameter of the center hole of the externally threaded pipe.

[0011] Preferably, a tension spring is obliquely arranged between the core rod and the bed to achieve axial positioning of the core rod.

[0012] Preferably, a tension spring fixing sleeve is sleeved on the core rod, and the tension spring fixing sleeve is fixedly connected to the core rod by a plurality of fixing screws; one end of the tension spring is pressed on the tension spring fixing sleeve by a fixing screw, and the other end of the tension spring is fixedly connected to the part of the bed corresponding to the core rod at the front end of the tension spring fixing sleeve.

[0013] Preferably, the front end of the core rod is threadably connected to the core head via a threaded opening.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0015] The U-shaped groove and the inclined groove provided on the tail frame can realize the simultaneous fixing of multiple core rods, thereby improving the efficiency of drawing the aluminum alloy tube; through the external threaded tube, the left large nut and the right large nut arranged on the tail frame, not only can the front and rear positions of the core head be adjusted quickly and conveniently, but also core rods of different specifications can be quickly replaced, the invention has strong versatility, simple operation, and saves the time of changing molds, thereby not only reducing the labor intensity of workers, but also further improving the efficiency of drawing the aluminum alloy tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 A top view of the present invention;

[0018] Figure 3 It is a schematic diagram of the tailstock structure of the present invention.

[0019] Among them: 1. bed, 2. nut, 3. external threaded pipe, 4. left large nut, 5. tailstock, 6. right large nut, 7. tension spring fixing sleeve, 8. fixing screw, 9. tension spring, 10. core rod, 11. core head, 12. support column, 13. U-shaped groove, 14. inclined groove. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] A quick adjustment device for a pull rod, combined with Figure 1 As shown, it includes a core rod 10 and a tail frame 5. The tail frame 5 is used to fix the core rod 10 and can quickly adjust and replace the core rod 10.

[0022] The tailstock 5 is vertically arranged upward, and its bottom surface is welded to the U-shaped bed 1 of the horizontal trolley. The bed 1 is fixed to the ground through a plurality of support columns 12, and the bed 1 and the support columns 12 are connected by welding.

[0023] A U-shaped groove 13 is provided at the top of the tailstock 5, and the notch of the U-shaped groove 13 is set upward and opened along the length direction of the bed 1. An inclined groove 14 is provided below the U-shaped groove 13, and the inclined groove 14 is opened along the length direction of the bed 1 and has the same width as the notch of the U-shaped groove 13. The inclined groove 14 is inclined upward, and the inclination angle is 30°~60°. The bottom side of the inclined groove 14 and the side of the U-shaped groove 13 away from the opening of the inclined groove 14 are located in the same vertical plane. The U-shaped groove 13 and the inclined groove 14 are both used to set up the core rod 10. According to the number of inclined grooves 14, multiple core rods 10 of the same specification can be set up simultaneously with the U-shaped groove 13, thereby increasing the efficiency of drawing aluminum alloy tubes.

[0024] The U-shaped groove 13 and the inclined groove 14 are both provided with an externally threaded tube 3, which is hollow inside and has an external thread on the outside. The outer diameter of the externally threaded tube 3 is the same as the width of the groove, and the left and right sides of the groove are respectively threadedly connected with a left large nut 4 and a right large nut 6 through the external threads provided. The inner diameter of the externally threaded tube 3 is adapted to the outer diameter of the core rod 10, and the externally threaded tube 3 is a group of externally threaded tubes 3 with different inner diameters. According to the different outer diameters of the core rod 10 to be fixed, an adapted externally threaded tube 3 can be selected.

[0025] The tail end of the core rod 10 passes through the center hole of the external threaded tube 3, and threads are provided at the tail end and the front end of the core rod 10. The front end of the core rod 10 is threadedly connected with a core head 11, and the tail end of the core rod 10 is threadedly connected with a nut 2, which is arranged on the port of the external threaded tube 3, and the outer diameter of the nut 2 is larger than the center hole diameter of the external threaded tube 3, so as to ensure that the core rod 10 does not separate from the external threaded tube 3 when subjected to tension.

[0026] A tension spring 9 is obliquely arranged between the core rod 10 and the bed 1, and the tension spring 9 is used to realize the axial positioning of the core rod 10. A tension spring fixing sleeve 7 is sleeved on the core rod 10, and the tension spring fixing sleeve 7 is fixedly connected to the core rod 10 through a plurality of fixing screws 8. One end of the tension spring 9 is pressed on the tension spring fixing sleeve 7 through a fixing screw 8, and the other end of the tension spring 9 is fixedly connected to the part of the bed 1 corresponding to the core rod 10 at the front end of the tension spring fixing sleeve 7. Under normal circumstances, the tension spring 13 is always in a tensioned state. Under the action of the pre-tightening force of the tension spring 13, it can ensure that the nut 2 is close to the port of the external threaded tube 3, thereby realizing the axial positioning of the core rod 10.

[0027] When the present invention is used, when the core head 11 needs to be adjusted forward by a certain distance, the left large nut 4 is first screwed backward by a certain distance, and then the right large nut 6 is tightened until the left large nut 4 is close to the side of the tail frame 5, and the distance adjustment of the core head 11 is completed. Conversely, when the core head 11 needs to be adjusted backward by a certain distance, the right large nut 6 is first screwed backward by a certain distance, and then the left large nut 4 is tightened until the right large nut 6 is close to the side of the tail frame 5, and the distance adjustment of the core head 11 is completed.

[0028] When it is necessary to replace the core rod 10 with a different outer diameter, remove the tension spring 9 from the fixing screw 8, loosen the left large nut 4 or the right large nut 6, and pull the entire core rod 10 together with the externally threaded tube 3 out of the notch of the U-shaped groove 13 and the inclined groove 14. When replacing the core rod 10 with the same outer diameter, unscrew the nut 2 at the tail end of the core rod 10, pull the core rod 10 out of the externally threaded tube 3, and then replace it with a suitable core rod 10.

Claims

1. A quick adjustment device for a core rod of a trolley, comprising a core rod (10) and a tailstock (5) vertically welded upward on a bed (1) of a horizontal trolley, characterized in that: A U-shaped groove (13) with an opening facing upward is provided at the top of the tailstock (5) along the length direction of the bed (1), and an inclined groove (14) with the same width as the opening of the U-shaped groove (13) and inclined upward is provided below the U-shaped groove (13) along the length direction of the bed (1); a hollow externally threaded tube (3) with an outer diameter the same as the opening width of the U-shaped groove (13) is clamped in the openings of the U-shaped groove (13) and the inclined groove (14); the externally threaded tube (3) is located on the left and right sides of the opening and is respectively threadedly connected to a left large nut (4) and a right large nut (6) through the external threads provided on the externally threaded tube (3); the tail end of the core rod (10) passes through the center hole of the externally threaded tube (3) and is threadedly connected to a nut (2) for preventing the core rod (10) from being pulled out of the externally threaded tube (3) through the threads provided; A tension spring (9) is obliquely arranged between the core rod (10) and the bed (1) for achieving axial positioning of the core rod (10); a tension spring fixing sleeve (7) is sleeved on the core rod (10), and the tension spring fixing sleeve (7) is fixedly connected to the core rod (10) by means of a plurality of fixing screws (8) inserted therethrough; one end of the tension spring (9) is pressed onto the tension spring fixing sleeve (7) by means of a fixing screw (8), and the other end of the tension spring (9) is fixedly connected to a portion of the bed (1) corresponding to the core rod (10) at the front end of the tension spring fixing sleeve (7); The bottom end side surface of the inclined groove (14) and the side surface of the U-shaped groove (13) away from the opening of the inclined groove (14) are located in the same vertical plane; The inclined groove (14) has an inclination angle of 30°-60°.

2. A quick adjustment device for a pull rod according to claim 1, characterized in that: The externally threaded tubes (3) are a group of externally threaded tubes (3) whose inner diameters are compatible with core rods (10) of different outer diameters.

3. A quick adjustment device for a pull rod according to claim 1, characterized in that: The nut (2) is arranged close to the end of the externally threaded tube (3), and the outer diameter of the nut (2) is larger than the diameter of the center hole of the externally threaded tube (3).

4. A quick adjustment device for a pull rod according to claim 1, characterized in that: The front end of the core rod (10) is threadedly connected to the core head (11) via a threaded opening.

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