A forming die for a self-locking device for a scaffolding upright

Abstract

The present invention relates to a forming die for a self-locking device of a scaffolding upright pole, which is characterized in that it comprises a punching die and a diameter-changing die. In the present invention, a punching structure is arranged on an inner die seat and an outer die seat, so that holes at multiple positions on the self-locking device can be punched at the same time, thereby improving the punching efficiency of the self-locking device. In addition, when the diameter is changed, the diameter-changing die used can simultaneously meet the production requirements of the top end diameter reduction and the bottom end diameter expansion of the self-locking device, without the need for intermediate equipment replacement, thereby improving the diameter-changing efficiency of the self-locking device. By using the forming die, multiple holes of the self-locking device are punched at the same time, and both ends are changed at the same time, thereby doubling the production efficiency.

Description

Technical Field

[0001] The invention relates to the field of scaffolding pole self-locking devices, in particular to a forming die of a scaffolding pole self-locking device. Background Art

[0002] When connecting the vertical poles on the scaffold, a sleeve is usually used to nest the ends of the two connected vertical poles to achieve the connection. The sleeve is fixed on the ends of the vertical poles of the scaffold by locking bolts or pins to prevent the sleeve from being out of the locked position. After the nesting, the steps of aligning the holes and inserting the pins are required, which leads to the problem of low installation efficiency. Figure 1 The self-locking device shown can realize the self-locking of the uprights on the scaffolding, and realizes the self-locking of the self-locking cylinder through vertical displacement and rotation operation; at the same time, it is also convenient for later disassembly, and there is no need to connect the uprights by means of plug-in pins, thereby improving the installation efficiency between the scaffolding uprights.

[0003] The production process of the self-locking device mainly involves the punching and end diameter reducing processes of the self-locking device. Since the self-locking device itself is a columnar structure, the common horizontal opening method is not suitable for the opening of the self-locking device, and the general production efficiency is low by using a rotary method for expanding and shrinking the mouth. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a forming die for a self-locking device of a scaffolding upright pole, which can solve the problems of troublesome punching of the self-locking device and complicated diameter-changing process.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a forming die of a self-locking device for a scaffolding pole, the innovation of which is: comprising a punching die and a diameter-changing die;

[0006] The punching die comprises an inner die seat and an outer die seat, the outer die seat is a rectangular parallelepiped structure, a circular mounting hole for accommodating the inner die seat is opened at the center of the outer die seat; the inner die seat is installed in the circular mounting hole of the outer die seat, and a spacer block is arranged between the bottom end of the inner wall of the outer die seat and the bottom end of the outer wall of the inner die seat, so that a gap for accommodating a self-locking device is formed between the outer die seat and the inner die seat;

[0007] The outer die seat is provided with a first outer die punching hole, a second outer die punching hole and an L-shaped outer die punching hole which penetrate the outer die seat in sequence from top to bottom; the inner die seat is provided with a first inner die punching hole, a second inner die punching hole and an L-shaped inner die punching hole which correspond to the first outer die punching hole, the second outer die punching hole and the L-shaped outer die punching hole respectively from top to bottom; the inner die seat is provided with a stripping hole which penetrates the inner die seat along the axial direction;

[0008] The variable diameter die comprises an expanding bottom die and a reducing die; the expanding bottom die is in a boss-like structure and its bottom end is arranged horizontally, and the outer contour of the expanding bottom die is in a concave arc structure; the reducing die is in a cylindrical structure, and a cylindrical hole for accommodating a self-locking device is opened at the bottom end of the reducing die along the axial direction, and the cylindrical hole of the reducing die is nested on the expanding bottom die and matched with the outer contour of the expanding bottom die, and a forming boss is arranged on the top inner wall of the cylindrical hole of the reducing die, and a forming die cavity for accommodating the top of the self-locking device is formed between the top side wall of the cylindrical hole and the forming boss.

[0009] Furthermore, the expansion bottom mold includes a cylindrical section and a truncated cone section, the cylindrical section and the truncated cone section are coaxially arranged, and the connection between the cylindrical section and the truncated cone section is an arc-shaped transition, and the arc-shaped transition is a concave arc with an outer diameter gradually increasing from top to bottom.

[0010] Furthermore, bolt holes are opened on the bottom end surface of the expanded bottom die along the axial direction.

[0011] Furthermore, the top side wall of the cylindrical hole of the reducing die includes a fold line guide segment and a straight line segment, one end of the fold line guide segment is connected to the inner wall of the cylindrical hole, the fold line guide segment is a structure inclined inward from bottom to top, and the two ends of the straight line segment are respectively connected to the other end of the fold line guide segment and the top of the cylindrical hole.

[0012] The advantages of the present invention are:

[0013] 1) In the present invention, by arranging a punching structure on the inner die base and the outer die base, the holes at multiple positions on the self-locking device can be punched at the same time, thereby improving the punching efficiency of the self-locking device; in addition, when changing the diameter, the diameter-changing die used can simultaneously meet the production requirements of reducing the diameter at the top end and expanding the diameter at the bottom end of the self-locking device, without the need to replace the equipment in the middle, thereby improving the diameter-changing efficiency of the self-locking device; by using the forming die, the self-locking device can punch multiple holes at the same time, and the two ends can change the diameter at the same time, thereby doubling the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 The present invention is a schematic structural diagram of a scaffolding upright pole self-locking device.

[0016] Figure 2 The present invention is a top view of a punching die of a forming die of a scaffolding upright pole self-locking device.

[0017] Figure 3 The present invention is a cross-sectional view of a punching die of a forming die of a self-locking device for a scaffolding pole according to the present invention.

[0018] Figure 4The present invention is a structural diagram of a variable diameter mold of a molding mold for a scaffolding upright pole self-locking device.

[0019] Figure 5 The present invention is a schematic diagram of a diameter-changing state of a diameter-changing mold of a forming mold of a scaffolding upright pole self-locking device. DETAILED DESCRIPTION

[0020] The following embodiments can enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0021] like Figures 1 to 5 The forming die of the self-locking device of a scaffolding upright pole shown comprises a punching die 1 and a diameter-changing die 2.

[0022] The punching die 1 includes an inner die seat 11 and an outer die seat 12. The outer die seat 12 is a rectangular structure. A circular mounting hole for accommodating the inner die seat 11 is opened in the center of the outer die seat 12. The inner die seat 11 is installed in the circular mounting hole of the outer die seat 12. A spacer block 13 is arranged between the bottom end of the inner wall of the outer die seat 12 and the bottom end of the outer wall of the inner die seat 11, so that a gap for accommodating the self-locking device is formed between the outer die seat 12 and the inner die seat 11.

[0023] The outer mold base 12 is provided with a first outer mold punching hole 121, a second outer mold punching hole 122 and an L-shaped groove outer mold punching hole 123 which pass through the outer mold base in sequence from top to bottom; the inner mold base 11 is provided with a first inner mold punching hole 111, a second inner mold punching hole 112 and an L-shaped groove inner mold punching hole 113 which correspond to the first outer mold punching hole 121, the second outer mold punching hole 122 and the L-shaped groove outer mold punching hole 123 in sequence from top to bottom; the inner mold base 11 is provided with a stripping hole 114 which passes through the inner mold base along the axial direction.

[0024] The variable diameter die 2 includes an expanding bottom die 21 and a reducing die 22; the expanding bottom die 21 is a boss-shaped structure and its bottom end is horizontally arranged, and the outer contour of the expanding bottom die 21 is a concave arc structure; the reducing die 22 is a cylindrical structure, and a cylindrical hole for accommodating a self-locking device is opened at the bottom end of the reducing die 22 along the axial direction, and the cylindrical hole of the reducing die 22 is nested on the expanding bottom die 21 and matched with the outer contour of the expanding bottom die 21, and a forming boss 221 is arranged on the top inner wall of the cylindrical hole of the reducing die 22, and a forming cavity 222 for accommodating the top of the self-locking device is formed between the top side wall of the cylindrical hole and the forming boss 221; the bottom end of the expanding bottom die 21 A bolt hole 211 is opened on the surface along the axial direction; the expanding bottom die 21 includes a cylindrical section 212 and a truncated cone section 213, the cylindrical section 212 and the truncated cone section 213 are coaxially arranged, and the connection between the cylindrical section 212 and the truncated cone section 213 is an arc-shaped transition, and the arc-shaped transition is a concave arc with an outer diameter gradually increasing from top to bottom; the top side wall of the cylindrical hole of the reducing die 22 includes a fold line guide section 223 and a straight line section 224, one end of the fold line guide section 223 is connected to the inner wall of the cylindrical hole, the fold line guide section 223 is a structure inclined inward from bottom to top, and the two ends of the straight line section 224 are respectively connected to the other end of the fold line guide section and the top of the cylindrical hole.

[0025] The working principle of the present invention is as follows: in the present invention, the cut cylindrical tube is embedded between the outer die seat 12 and the inner die seat 11 of the punching die 1, and the punch located in the horizontal direction can punch the first outer die punching hole 121, the second outer die punching hole 122 and the L-shaped groove outer die punching hole 123 on both sides at the same time, and cooperate with the first inner die punching hole 111, the second inner die punching hole 112 and the L-shaped groove inner die punching hole 113 on the inner die seat to discharge the punched waste through the stripping hole in the center of the inner die seat; after completing this process, the self-locking device after punching is directly transferred and nested on the expanding bottom die of the variable diameter die, and then the reducing die is nested in the self-locking device and pressed down, and the molding cavity of the reducing die and the outer contour of the expanding bottom die are used to realize the simultaneous molding of both ends of the self-locking device.

[0026] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A forming mold for a self-locking device for a scaffolding pole, characterized in that: Including punching die and reducing die; The punching die comprises an inner die seat and an outer die seat, the outer die seat is a rectangular parallelepiped structure, a circular mounting hole for accommodating the inner die seat is opened at the center of the outer die seat; the inner die seat is installed in the circular mounting hole of the outer die seat, and a spacer block is arranged between the bottom end of the inner wall of the outer die seat and the bottom end of the outer wall of the inner die seat, so that a gap for accommodating a self-locking device is formed between the outer die seat and the inner die seat; The outer die seat is provided with a first outer die punching hole, a second outer die punching hole and an L-shaped outer die punching hole which penetrate the outer die seat in sequence from top to bottom; the inner die seat is provided with a first inner die punching hole, a second inner die punching hole and an L-shaped inner die punching hole which correspond to the first outer die punching hole, the second outer die punching hole and the L-shaped outer die punching hole respectively from top to bottom; the inner die seat is provided with a stripping hole which penetrates the inner die seat along the axial direction; The variable diameter die comprises an expanding bottom die and a reducing die; the expanding bottom die is in a boss-like structure and the bottom end is arranged horizontally, and the outer contour of the expanding bottom die is in a concave arc structure; the reducing die is in a cylindrical structure, and a cylindrical hole for accommodating a self-locking device is opened at the bottom end of the reducing die along the axial direction, the cylindrical hole of the reducing die is nested on the expanding bottom die and matched with the outer contour of the expanding bottom die, a forming boss is arranged on the top inner wall of the cylindrical hole of the reducing die, and a forming cavity for accommodating the top of the self-locking device is formed between the top side wall of the cylindrical hole and the forming boss; The diameter expansion bottom die comprises a column section and a truncated cone section, the column section and the truncated cone section are coaxially arranged, and the connection between the column section and the truncated cone section is an arc-shaped transition, and the arc-shaped transition is a concave arc with an outer diameter gradually increasing from top to bottom; The bottom end surface of the expanded bottom die is provided with bolt holes along the axial direction; The top side wall of the cylindrical hole of the shrinking die includes a folded line guide segment and a straight line segment, one end of the folded line guide segment is connected to the inner wall of the cylindrical hole, the folded line guide segment is a structure inclined inward from bottom to top, and the two ends of the straight line segment are respectively connected to the other end of the folded line guide segment and the top of the cylindrical hole; By arranging a punching structure on the inner mold base and the outer mold base, holes at multiple positions on the self-locking device can be punched at the same time, thereby improving the punching efficiency of the self-locking device; in addition, when changing the diameter, the variable diameter mold used can simultaneously meet the production requirements of reducing the diameter at the top end and expanding the diameter at the bottom end of the self-locking device, without the need to replace equipment in the middle, thereby improving the variable diameter efficiency of the self-locking device; by using this forming mold, multiple holes of the self-locking device are punched at the same time, and the two ends are changed at the same time, thereby doubling the production efficiency.

Images