Steel bar heading device

Abstract

A steel bar heading device comprises a workbench, a supporting mechanism, a clamping and positioning mechanism and a heading die, wherein the supporting mechanism, the clamping and positioning mechanism and the heading die are arranged on the workbench. The clamping and positioning mechanism comprises a positioning plate and a locking plate movably arranged on the left side of the positioning plate, a through hole I for a reinforcing steel bar to penetrate through is formed in the positioning plate, two sliding blocks which are symmetrically distributed up and down are arranged on the edge of the left side of the through hole I, the right ends of the sliding blocks are slidably connected with the positioning plate through sliding rails, arc grooves are machined in the opposite sides of the two sliding blocks, and a conical hole is machined in the locking plate. The outer side face of the sliding block is machined to form a conical face, and the left end of the sliding block extends into the conical hole. An electric heating ring is mounted at an opening of the forming groove, and the left side of the heading die is connected with a hydraulic cylinder; according to the device, the two sliding blocks on the positioning plate are pushed to move oppositely through the conical holes in the locking plate, the steel bars are clamped and positioned, then the end portions of the steel bars are heated and then upset through the head upsetting die with the electric heating ring, the head upsetting process of the multiple steel bars can be achieved at a time, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a rebar upsetting device. Background Technology

[0002] In the field of prestressed concrete products, the processing technology of upsetting reinforcing bars is commonly involved. This process requires first transporting the cut reinforcing bars to a designated position on an upsetting machine, where the machine's clamps hold the bars, and the upsetting components apply pressure to the bars for upsetting. Currently, most reinforcing bars are upset one by one using a positioning method, which results in low processing efficiency. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a rebar upsetting device.

[0004] To achieve the above objectives, this utility model provides a rebar upsetting device, including a workbench, a support mechanism on the right side of the workbench for supporting the rebar, a clamping and positioning mechanism in the middle of the workbench, and an upsetting mold on the left side of the workbench;

[0005] The clamping and positioning mechanism includes a positioning plate fixed in the middle of the workbench and a locking plate movably disposed on the left side of the positioning plate. The positioning plate has a through hole I for the reinforcing bar to pass through. Two sliders are symmetrically distributed vertically at the left edge of the through hole I. The right end of the slider is slidably connected to the positioning plate through a slide rail. A return spring is installed in the slide rail. The two sliders are machined with arc grooves on their facing sides. The locking plate is machined with a conical hole. The outer side of the slider is machined to form a conical surface and the left end extends into the conical hole. A cylinder is installed in the middle of the positioning plate. The cylinder rod end of the cylinder is connected and fixed to the locking plate.

[0006] A forming groove is machined on the right side of the upsetting die at the position corresponding to the conical hole. An electric heating coil is installed on the outside of the opening at the right end of the forming groove. A hydraulic cylinder is connected to the left side of the upsetting die.

[0007] As a further improvement of this utility model, the support mechanism includes a support plate, on which through holes are machined for inserting the reinforcing bar. The support plates are evenly distributed along the length direction of the reinforcing bar, and adjacent support plates are connected and fixed by connecting rods. The through holes are provided corresponding to through hole I.

[0008] As a further improvement of this utility model, the through holes I are distributed in an annular shape at equal intervals, and the conical holes are arranged in a one-to-one correspondence with the through holes I, with the central axis of the conical holes coinciding with that of the through holes I.

[0009] As a further improvement of this utility model, the curvature of the circular groove matches the outer circumference of the reinforcing bar.

[0010] As a further improvement of this utility model, the connection between the slider and the tapered hole is formed by a dovetail sliding structure to form a sliding fit.

[0011] As a further improvement of this utility model, the inner diameter of the forming groove is larger than the outer diameter of the reinforcing bar, and the inner diameter of the through hole and the through hole I is larger than the inner diameter of the forming groove.

[0012] As a further improvement of this utility model, the inner diameter of the heating coil is larger than the inner diameter of the forming groove.

[0013] As a further improvement of this utility model, the lower part of the upsetting die and the lower part of the locking plate are both slidably fitted with the worktable via slide rail I.

[0014] The beneficial effects of this utility model are as follows:

[0015] The device uses a tapered hole on the locking plate to push two sliders on the positioning plate to move towards each other and clamp and position the steel bars. Then, it uses an upsetting die with an electric heating coil to heat the ends of the steel bars before upsetting them. This allows for the upsetting of multiple steel bars at once, improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a front view of a rebar upsetting device according to this utility model;

[0017] Figure 2 for Figure 1 Sectional view along line AA;

[0018] Figure 3 This is a side view of the locking plate 8;

[0019] Figure 4 This is a side view of the upsetting die 11.

[0020] In the diagram: 1. Workbench; 2. Support plate; 21. Through hole; 22. Connecting rod; 3. Reinforcing bar; 4. Positioning plate; 41. Through hole I; 5. Cylinder; 6. Slide rail; 61. Return spring; 7. Slider; 71. Conical surface; 72. Arc groove; 8. Locking plate; 81. Conical hole; 82. Dovetail sliding structure; 9. Slide rail I; 10. Heating coil; 11. Upsetting die; 111. Forming groove; 12. Hydraulic cylinder. Detailed Implementation

[0021] like Figure 1 As shown, the present invention provides a rebar upsetting device, including a workbench 1, a support mechanism on the right side of the workbench 1 for supporting the rebar 3, a clamping and positioning mechanism in the middle of the workbench 1, and an upsetting mold 11 on the left side of the workbench 1.

[0022] The clamping and positioning mechanism includes a positioning plate 4 fixed in the middle of the workbench 1 and a locking plate 8 movably located on the left side of the positioning plate 4. The positioning plate 4 has through holes I 41 for the reinforcing bar 3 to pass through. The through holes I 41 are distributed in a ring shape at equal intervals. Two sliders 7 are symmetrically distributed vertically at the left edge of the through holes I 41. The right end of the sliders 7 is slidably connected to the positioning plate 4 through a slide rail 6. A return spring 61 is installed in the slide rail 6. The two sliders 7 are machined with arc grooves 72 on the facing sides. The curvature of the arc grooves 72 matches the outer circumference of the reinforcing bar 3 (see...). Figure 2 The locking plate 8 has a tapered hole 81, which corresponds to the through hole I 41. The central axis of the tapered hole 81 and the through hole I 41 coincides. The outer side of the slider 7 is machined to form a tapered surface 71 and the left end extends into the tapered hole 81. The slider 7 and the tapered hole 81 are connected by a dovetail sliding structure 82 to form a sliding fit. The positioning plate 4 is equipped with a cylinder 5 in the middle. The cylinder rod end of the cylinder 5 is connected and fixed to the locking plate 8.

[0023] The support mechanism includes a support plate 2, on which through holes 21 are machined for inserting reinforcing bars 3. The support plates 2 are evenly distributed along the length of the reinforcing bars 3. Adjacent support plates 2 are connected and fixed by connecting rods 22. The through holes 21 are correspondingly set with the through holes I 41.

[0024] A forming groove 111 is machined on the right side of the upsetting die 11 at the position corresponding to the conical hole 81. The inner diameter of the forming groove 111 is larger than the outer diameter of the reinforcing bar 3. The inner diameters of the through hole 21 and through hole I 41 are larger than the inner diameter of the forming groove 111. An electric heating ring 10 is installed on the outside of the opening at the right end of the forming groove 111. The inner diameter of the electric heating ring 10 is larger than the inner diameter of the forming groove 111. A hydraulic cylinder 12 is located on the left side of the upsetting die 11. The lower part of the upsetting die 11 and the lower part of the locking plate 8 are both connected to the worktable 1 through the slide rail I 9 to form a sliding fit.

[0025] The device uses a tapered hole on the locking plate to push two sliders on the positioning plate to move towards each other and clamp and position the steel bars. Then, it uses an upsetting die with an electric heating coil to heat the ends of the steel bars before upsetting them. This allows for the upsetting of multiple steel bars at once, improving work efficiency.

[0026] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0027] During operation, the reinforcing bars are sequentially passed through the through holes on the support plate and the through hole I on the positioning plate, then extend out along the conical hole on the locking plate. Multiple reinforcing bars are arranged in a ring. Then, the cylinder operates, driving the locking plate closer to one side of the positioning plate. As the slider slides along the conical hole, the conical hole forms a radial extrusion force on the surface of the slider. The two sliders move closer to each other under force until the arc groove of the slider clamps the surface of the reinforcing bar. Then, the hydraulic cylinder pushes the upsetting die to the right. The end of the reinforcing bar first extends into the heating ring, which heats the end of the reinforcing bar. Then, the upsetting die continues to move to the right, and the end of the reinforcing bar extends into the forming groove on the upsetting die. The upsetting die continuously applies pressure to the end of the reinforcing bar to the right. The heated end of the reinforcing bar deforms and is upset in the forming groove. After upsetting is completed, the upsetting die and the locking plate move to the left to reset. The two sliders are reset by the elastic memory of the reset spring, releasing the clamping force on the reinforcing bar, and the reinforcing bar can be removed.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reinforcing bar heading device characterised by: It includes workbench (1), the right part of workbench (1) is equipped with support mechanism for supporting reinforcing steel bar (3), the middle part of workbench (1) is equipped with clamping positioning mechanism, the left part of workbench (1) is equipped with header die (11); The clamping positioning mechanism includes positioning plate (4) fixed in the middle part of workbench (1), locking plate (8) movably arranged on the left side of positioning plate (4), positioning plate (4) is equipped with through hole I (41) for reinforcing steel bar (3) to pass through, two upper and lower symmetrically distributed sliding blocks (7) are arranged at the left side edge of through hole I (41), the right end of sliding block (7) is connected with positioning plate (4) through slide rail (6), reset spring (61) is installed in slide rail (6), arc grooves (72) are processed on the opposite sides of two sliding blocks (7), taper hole (81) is processed on locking plate (8), taper surface (71) is formed on the outer side of sliding block (7) and the left end of which extends into taper hole (81), air cylinder (5) is installed in the middle part of positioning plate (4), the cylinder rod end of air cylinder (5) is connected with locking plate (8) and fixed; The right side of header die (11) is formed with forming groove (111) at the position corresponding to taper hole (81), electric heating ring (10) is installed outside the opening at the right end of forming groove (111), hydraulic cylinder (12) is connected with the left side of header die (11).

2. A reinforcing bar heading device as claimed in claim 1, characterised in that: The support mechanism includes support plate (2), through hole (21) is processed on support plate (2) for inserting reinforcing steel bar (3), support plate (2) is uniformly distributed along the length direction of reinforcing steel bar (3), adjacent support plates (2) are connected and fixed through connecting rod (22), through hole (21) is arranged correspondingly with through hole I (41).

3. A reinforcing bar heading device as claimed in claim 1, wherein: Through hole I (41) is annularly and equidistantly distributed, taper hole (81) is arranged one by one with through hole I (41), the center axes of taper hole (81) and through hole I (41) coincide.

4. A reinforcing bar heading device according to claim 1, wherein: The radian of arc groove (72) matches the outer peripheral surface of reinforcing steel bar (3).

5. A reinforcing bar heading device as claimed in claim 1, wherein: The connecting part of sliding block (7) and taper hole (81) is formed with sliding fit through dovetail sliding structure (82).

6. A reinforcing bar heading device as claimed in claim 1, characterized in that: The inner diameter of forming groove (111) is greater than the outer diameter of reinforcing steel bar (3), the inner diameters of through hole (21) and through hole I (41) are greater than the inner diameter of forming groove (111).

7. A reinforcing bar heading device as claimed in claim 1, wherein: The inner diameter of electric heating ring (10) is greater than the inner diameter of forming groove (111).

8. A reinforcing bar heading device as claimed in claim 1, characterized in that: The lower part of header die (11) and the lower part of locking plate (8) are connected with workbench (1) to form sliding fit through slide rail I (9).

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