A square tube ladder front frame integrated punching and bending equipment

Abstract

The present invention discloses an integrated punching and bending device for a front frame of a square tube ladder, comprising a working platform, on which a side punching mechanism is arranged; a top punching unit and a terminal bending unit; the side punching mechanism comprises a plurality of punching units, and the top punching unit, the terminal bending unit and the plurality of punching units are arranged in a straight line; and the relative positions of the top punching unit, the terminal bending unit and the plurality of punching units are adjustable; the present application is provided with a side punching mechanism; a top punching unit and a terminal bending unit; through the synchronous action of the three groups of mechanisms, the punching and bending of the front frame of the square tube ladder can be completed simultaneously; at the same time, the distance between the three groups of mechanisms can be adjusted according to the size of the ladder, the spacing of the punching holes, etc., to meet different punching requirements and bending requirements.

Description

Technical Field

[0001] The invention relates to the field of ladder manufacturing equipment, and more specifically to a square tube ladder front frame integrated punching and bending equipment. Background Art

[0002] When producing a square tube ladder, first, a straight square tube is bent into a U-shaped structure as the front frame of the square tube ladder, and then a number of holes are punched on both sides of the front frame of the square tube ladder to fix the footrest; secondly, holes need to be punched on the tops of the end feet on both sides of the front frame of the square tube ladder, and the end feet on both sides are bent outward to improve the stability of the square tube ladder; when producing this type of ladder, it is usually necessary to punch holes on both sides first, then punch holes on both sides of the end feet, and finally bend the end feet; at least three processes are required; more processes require more manpower, resulting in increased costs; therefore, a device is needed to complete these three processes simultaneously. Summary of the invention

[0003] The object of the present invention is to provide a square tube ladder front frame integrated punching and bending device, aiming to effectively solve the problems in the prior art.

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] A square tube ladder front frame integrated punching and bending equipment, comprising a working platform, on which a side punching mechanism is arranged; a top punching unit and a terminal bending unit; the side punching mechanism is used to punch holes on both sides of the square tube ladder front frame; the top punching unit is used to punch holes on the tops of the two side end feet of the square tube ladder front frame; the terminal bending unit is used to bend the two side end feet of the square tube ladder front frame outward; the side punching mechanism comprises a plurality of punching units, the top punching unit, the terminal bending unit and the plurality of the punching units are arranged in a straight line; and the relative positions of the top punching unit, the terminal bending unit and the plurality of the punching units are adjustable.

[0006] Preferably, a slide rail is provided on the working platform; the terminal bending unit, the top punching unit and a plurality of the punching units are connected to the slide rail via a slider.

[0007] Preferably, a plurality of the punching units are arranged at intervals on the slide rail, and the punching units include a first mounting plate, and the bottom surface of the first mounting plate is connected to the slide rail through a first slider; two first oil cylinders are axially symmetrically arranged on the top surface of the first mounting plate, and ladder side rod positioning seats are arranged on opposite surfaces of the two first oil cylinders, and a first punch needle is arranged on the piston rod of the first oil cylinder; a positioning groove is arranged on the ladder side rod positioning seat; a first punch needle guide hole is arranged on the side of the positioning groove, and the first punch needle passes through the first punch needle guide hole to punch the side rod on the ladder side rod positioning seat.

[0008] Wherein, the first oil cylinder and the ladder side rod positioning seat are both connected to the first mounting plate by bolts.

[0009] Preferably, a clamping block that can move up and down is provided above the positioning groove to fix the side rod in the positioning groove; the clamping block is connected to the piston rod of the first cylinder, and the first cylinder is located on the side of the ladder side rod positioning seat and is fixed to the first mounting plate by bolts.

[0010] Preferably, several first oil cylinders in several of the punching units are connected with independent oil supply pipelines, so that it is convenient to select practical punching units.

[0011] Preferably, the end bending unit is located on the side of the side punching mechanism, includes a second mounting plate, the bottom surface of the second mounting plate is connected to the slide rail through a second slider; two second oil cylinders are axially symmetrically arranged on the top surface of the second mounting plate, and a bending limit assembly is arranged on the opposite surfaces of the two second oil cylinders; the bending limit assembly includes a bending point positioning block, and when the square tube ladder side rod is in the positioning groove, its outer side surface abuts against the bending point positioning block; it also includes a bending degree limiting block, the bending degree limiting block is used to limit the end of the pipe section to be bent, the bending degree limiting block is arranged parallel to the positioning groove, and the bending point positioning block is fixedly connected to the bending degree limiting block, and a push block is fixed on the piston rod of the second oil cylinder, and a placement space for passing the side rod is formed between the push block and the bending point positioning block, and after the side rod is placed, a bending space is formed between the side rod and the bending degree limiting block.

[0012] The bending degree limiting block is provided with an inserting groove, and the bending point positioning block is inserted into the inserting groove, and the two are arranged vertically.

[0013] Preferably, the joint surface between the bending point positioning block and the side rod of the square tube ladder forms an inclined surface obliquely downward along the bending trajectory, and the top end angle of the inclined surface is an arc-shaped chamfer. The setting of the inclined surface can make the bending of the pipe smoother without bending marks.

[0014] Preferably, the top punching unit is arranged on the side of the end bending tube unit, including a third mounting plate, and the bottom surface of the third mounting plate is connected to the slide rail through a third slider; a top punching assembly is axially symmetrically arranged on the top surface of the third mounting plate, and the top punching assembly includes a second slide rail fixedly connected to the third mounting plate, a fourth mounting plate is fixed on the second slide rail, and the rear end of the fourth mounting plate is connected to a second cylinder, and the second cylinder pushes the fourth mounting plate to move on the second slide rail; a fifth mounting plate is vertically fixed on the fourth mounting plate, and a punching needle assembly, a guide block and a supporting bottom mold are arranged on the fifth mounting plate from top to bottom in sequence. When punching, the supporting bottom mold penetrates into the end port of the side rod to form a support for the port, and the guide block and the supporting bottom mold are both provided with punching guide holes.

[0015] The punch needle assembly includes a cylinder, a piston rod of the cylinder is provided with an impact connection block, the bottom of the impact connection block is connected to the punch needle, the top of the impact connection block is provided with a clamping groove, and the cylinder piston rod is clamped in the clamping groove for easy replacement.

[0016] Compared with the prior art, the advantages of the present invention are: the present application is provided with a side punching mechanism; a top punching unit and an end bending unit; through the synchronous action of the three groups of mechanisms, the punching and bending of the front frame of the square tube ladder can be completed at the same time; at the same time, according to the size of the ladder, the spacing of the punching holes, etc., the distance between the three groups of mechanisms can be adjusted to meet different punching requirements and bending requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of A;

[0019] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of B;

[0020] Figure 4 It is a structural schematic diagram of another aspect of the present invention;

[0021] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of C. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-5 A square tube ladder front frame integrated punching and bending equipment comprises a working platform 1, on which a side punching mechanism 2 is arranged; a top punching unit 3 and a terminal bending unit 4; the side punching mechanism is used to punch holes on both sides of the square tube ladder front frame; the top punching unit is used to punch holes on the tops of the two side end feet of the square tube ladder front frame; the terminal bending unit is used to bend the two side end feet of the square tube ladder front frame outward; the side punching mechanism comprises a plurality of punching units 12, and the top punching unit, the terminal bending unit and the plurality of the punching units are arranged in a straight line; and the relative positions of the top punching unit, the terminal bending unit and the plurality of the punching units are adjustable.

[0027] A slide rail 5 is arranged on the working platform; the terminal bending unit, the top punching unit and a plurality of the punching units are connected to the slide rail via a slider.

[0028] Several punching units are arranged at intervals on the slide rail, and the punching units include a first mounting plate 6, the bottom surface of the first mounting plate is connected to the slide rail through a first slider 7; two first oil cylinders 8 are axially symmetrically arranged on the top surface of the first mounting plate, and ladder side rod positioning seats 9 are arranged on the opposite surfaces of the two first oil cylinders, and a first punch needle 10 is arranged on the piston rod of the first oil cylinder; a positioning groove 11 is arranged on the ladder side rod positioning seat; a first punch needle guide hole (not shown) is arranged on the side of the positioning groove, and the first punch needle passes through the first punch needle guide hole to punch the side rod on the ladder side rod positioning seat.

[0029] Wherein, the first oil cylinder and the ladder side rod positioning seat are both connected to the first mounting plate by bolts.

[0030] A clamping block 13 that can move up and down is arranged above the positioning groove to fix the side rod in the positioning groove; the clamping block is connected to the piston rod of the first cylinder 14, and the first cylinder is located on the side of the ladder side rod positioning seat and is fixed to the first mounting plate by bolts.

[0031] Several first oil cylinders in several punching units are connected with independent oil supply pipelines 15, so that it is convenient to select practical punching units.

[0032] The end bending unit is located on the side of the side punching mechanism, and includes a second mounting plate 16, the bottom surface of which is connected to the slide rail through a second slider; two second oil cylinders 17 are axially symmetrically arranged on the top surface of the second mounting plate, and a bending limit assembly is arranged on the opposite surfaces of the two second oil cylinders; the bending limit assembly includes a bending point positioning block 18, and when the side rod of the square tube ladder is in the positioning groove, its outer side surface abuts against the bending point positioning block; it also includes a bending degree limiting block 19, and the bending degree limiting block is used to limit the end of the pipe section that needs to be bent, the bending degree limiting block is arranged parallel to the positioning groove, and the bending point positioning block is fixedly connected to the bending degree limiting block, and a push block 20 is fixed on the piston rod of the second oil cylinder, and a placement space 21 for passing the side rod is formed between the push block and the bending point positioning block, and after the side rod is placed, a bending space 22 is formed between the side rod and the bending degree limiting block.

[0033] The bending degree limiting block is provided with an inserting groove 23, and the bending point positioning block is inserted into the inserting groove, and the two are arranged vertically.

[0034] The butt joint surface between the bending point positioning block and the side rod of the square tube ladder forms an inclined surface 23 inclined downward along the bending track, and the top end angle of the inclined surface is an arc chamfer. The setting of the inclined surface can make the bending of the pipe smoother without bending marks.

[0035] The top punching unit is arranged on the side of the terminal bending unit, including a third mounting plate 24, the bottom surface of the third mounting plate is connected to the slide rail through a third slider; a top punching assembly is axially symmetrically arranged on the top surface of the third mounting plate, and the top punching assembly includes a second slide rail 25 fixedly connected to the third mounting plate, a fourth mounting plate 26 is fixed on the second slide rail, and a second cylinder 27 is connected to the rear end of the fourth mounting plate, and the second cylinder pushes the fourth mounting plate to move on the second slide rail; a fifth mounting plate 28 is vertically fixed on the fourth mounting plate, and a punching needle assembly 29, a guide block 30 and a supporting bottom mold 31 are arranged on the fifth mounting plate from top to bottom. When punching, the supporting bottom mold penetrates into the end port of the side rod to form a support for the port, and punching guide holes are provided on the guide block and the supporting bottom mold.

[0036] The punch needle assembly includes a cylinder, a piston rod of the cylinder is provided with an impact connection block, the bottom of the impact connection block is connected to the punch needle, the top of the impact connection block is provided with a clamping groove, and the cylinder piston rod is clamped in the clamping groove for easy replacement.

[0037] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A square tube ladder front frame integrated punching and bending equipment, characterized by: It includes a working platform, on which a side punching mechanism is provided; a top punching unit and a terminal bending unit; the side punching mechanism is used to punch holes on both sides of the front frame of the square tube ladder; the top punching unit is used to punch holes on the tops of the end feet on both sides of the front frame of the square tube ladder; the terminal bending unit is used to bend the end feet on both sides of the front frame of the square tube ladder outward; the side punching mechanism includes a plurality of punching units, and the top punching unit, the terminal bending unit and the plurality of punching units are arranged in a straight line; and the relative positions of the top punching unit, the terminal bending unit and the plurality of punching units are adjustable; the terminal bending unit is located on the side of the side punching mechanism, and includes a second mounting plate, the bottom surface of the second mounting plate is connected to the slide rail through a second slider; two second oil cylinders are axially symmetrically arranged on the top surface of the second mounting plate, and a bending limit assembly is arranged on the opposite surfaces of the two second oil cylinders; the bending limit assembly includes a bending point positioning block, and when the side rod of the square tube ladder is in the positioning groove, its outer side surface abuts against the bending point positioning block; It also includes a bending limit block, which is used to limit the end of the pipe section that needs to be bent, the bending limit block is arranged parallel to the positioning groove, and the bending point positioning block is fixedly connected to the bending limit block, and a push block is fixed on the piston rod of the second oil cylinder, and a placement space for passing the side rod is formed between the push block and the bending point positioning block, and after the side rod is placed, a bending space is formed between the side rod and the bending limit block; the docking surface between the bending point positioning block and the side rod of the square tube ladder forms an inclined surface obliquely downward along the bending trajectory, and the top end angle of the inclined surface is an arc-shaped chamfer; the setting of the inclined surface can make the bending pipe smoother when bending, without bending marks; The top punching unit is arranged on the side of the terminal bending tube unit, and includes a third mounting plate, and the bottom surface of the third mounting plate is connected to the slide rail through a third slider; a top punching assembly is axially symmetrically arranged on the top surface of the third mounting plate, and the top punching assembly includes a second slide rail fixedly connected to the third mounting plate, and a fourth mounting plate is fixed on the second slide rail, and the rear end of the fourth mounting plate is connected to a second cylinder, and the second cylinder pushes the fourth mounting plate to move on the second slide rail; a fifth mounting plate is vertically fixed on the fourth mounting plate, and a punching needle assembly, a guide block and a supporting bottom mold are arranged on the fifth mounting plate from top to bottom in sequence. When punching, the supporting bottom mold penetrates into the end port of the side rod to form a support for the port, and the guide block and the supporting bottom mold are both provided with punching guide holes.

2. According to claim 1, a square tube ladder front frame integrated punching and bending equipment, characterized in that: The working platform is provided with a slide rail; the terminal bending unit, the top punching unit and a plurality of the punching units are connected to the slide rail via a slider.

3. According to claim 2, the square tube ladder front frame integrated punching and bending equipment is characterized by: Several punching units are arranged on the slide rail at intervals, and the punching units include a first mounting plate, and the bottom surface of the first mounting plate is connected to the slide rail through a first slider; two first oil cylinders are axially symmetrically arranged on the top surface of the first mounting plate, and ladder side rod positioning seats are arranged on the opposite surfaces of the two first oil cylinders, and a first punch needle is arranged on the piston rod of the first oil cylinder; a positioning groove is arranged on the ladder side rod positioning seat; a first punch needle guide hole is arranged on the side of the positioning groove, and the first punch needle passes through the first punch needle guide hole to punch the side rod on the ladder side rod positioning seat.

4. According to claim 3, the square tube ladder front frame integrated punching and bending equipment is characterized in that: A clamping block that can move up and down is arranged above the positioning groove to fix the side rod in the positioning groove; the clamping block is connected to the piston rod of the first cylinder, and the first cylinder is located on the side of the ladder side rod positioning seat and is fixed to the first mounting plate by bolts.

5. The square tube ladder front frame integrated punching and bending equipment according to claim 3 or 4, characterized in that: Several first oil cylinders in several punching units are connected with independent oil supply pipelines, so it is convenient to select practical punching units.

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