First and second punching die lifting structure of super-long heading machine

Abstract

The invention discloses a first-second punching die lifting structure of a super-long heading machine, which is characterized by comprising a machine body, a punch, a punching die assembly, a power assembly and a lifting driving assembly, the lifting driving assembly comprises a guide rail pair, a main swing arm movably connected to the outer portion of a guide rail of the guide rail pair, an auxiliary swing arm movably connected to the outer portion of the guide rail of the guide rail pair, a linkage assembly used for driving the main swing arm to rotate and in linkage with the crankshaft, and an auxiliary spring assembly providing restoring force for the main swing arm and the auxiliary swing arm. And a sliding block of the guide rail pair is fixed with a bottom plate of the dovetail carriage. Through cooperation of the lifting driving assembly and the lifting driving assembly, the stamping die assembly can be driven to move and ascend and descend at the same time, auxiliary force can be provided for ascending and descending of the stamping die assembly through the auxiliary spring assembly, and the ascending and descending speed and the ascending and descending efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of heading machines, and more specifically to a one-two punch die lifting structure for an ultra-long heading machine. Background Art

[0002] The current technology of the heading machine lifting device, such as a conjugate cam transmission lifting device for a heading machine disclosed in a Chinese patent (2016210241526), ​​does not achieve the same power source to synchronously move and lift the die. On the other hand, a transmission device for the upper and lower dies of a one-die two-punch screw heading machine disclosed in a Chinese patent (2016210241526) has the problem of insufficient rocker arm restoring force when in use. How to make the main slider perform reciprocating motion while promoting the lifting of the first and second dies, improve the lifting accuracy, and improve the transmission efficiency has become one of the research issues in the industry. Summary of the invention

[0003] The main purpose of the present invention is to provide a one-two die lifting structure of an ultra-long heading machine that can synchronously drive the die assembly to move and lift and can effectively provide lifting efficiency.

[0004] The technical solution adopted by the present invention is: a one-two punch die lifting structure of an ultra-long heading machine comprises: A fuselage, wherein the fuselage is provided with a slide groove; A punch, the punch being slidably disposed in the slide groove, and the front and rear ends of the punch being respectively provided with a dovetail groove and a mounting hole; A die assembly, the die assembly comprising a die frame, a dovetail slide plate slidably inserted in the dovetail groove, a pad fixedly connected between the die frame and the dovetail slide plate, and a first die and a second die mounted on the die frame; A power assembly, the power assembly comprising a crankshaft and a crankshaft connecting rod mounted on the crankshaft and fixed in the mounting hole; and, A lifting drive assembly, the lifting drive assembly includes a guide rail pair, a main swing arm movably connected to the outside of the guide rail of the guide rail pair, an auxiliary swing arm movably connected to the outside of the guide rail of the guide rail pair, a linkage assembly for driving the main swing arm to rotate and linked with the crankshaft, and an auxiliary spring assembly that provides restoring force for the main swing arm and the auxiliary swing arm. The slider of the guide rail pair is fixed to the bottom plate of the dovetail drag plate.

[0005] The linkage assembly includes a lower shaft, an impulse rod, a cam and a swing frame. An opening is provided at the right end of the impulse rod, and the end of the lower shaft passes through the opening and is fixed to the cam. Rollers in contact with the cam are provided on both symmetrical sides of the opening. The swing frame is movably connected to the middle part of the impulse rod and is connected to the main swing arm. The lower shaft is linked to the crankshaft through a gear set.

[0006] A guide groove is arranged at the left end of the impulse rod, the swing frame is movably connected to a connecting block installed in the guide groove, and a spring buffer is arranged at the connecting block and the left end of the impulse rod.

[0007] The auxiliary spring assembly includes two swing arm levers whose one ends are respectively connected to the main swing arm and the auxiliary swing arm, connecting rods movably connected to the other ends of the two swing arm levers, and a spring rebounder fixed to the outside of the fuselage and connected to the connecting rods.

[0008] The beneficial effects of the present invention are: The cooperation between the lifting drive assembly of the present invention and the lifting drive assembly can simultaneously drive the die assembly to move and lift simultaneously, and the auxiliary spring assembly can provide auxiliary force for the lifting of the die assembly, thereby improving the lifting speed and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 , Figure 2 It is a three-dimensional schematic diagram of the present invention.

[0010] Figure 3 It is a schematic diagram of the connection between the punch and the crankshaft connecting rod of the present invention.

[0011] Figure 4 , Figure 6 This is a schematic diagram of the present invention after the fuselage is removed.

[0012] Figure 5 This is a schematic diagram of the present invention after removing the fuselage and the gear set. DETAILED DESCRIPTION

[0013] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0014] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0016] Please refer to Figures 1 to 6 , a one-two punch die lifting structure of an ultra-long heading machine provided by the present invention comprises: A fuselage 10, wherein the fuselage 10 is provided with a slide slot 11; A punch 20, the punch 20 can be slidably disposed in the slide groove 11, and the front and rear ends of the punch 20 are respectively provided with a dovetail groove 21 and a mounting hole 22, the dovetail groove 21 is determined by two dovetail plates 211 fixed to the front end of the punch 20, and the mounting hole 22 is concavely disposed inwardly from the right side of the punch 20; The die assembly 30 includes a die frame 31, a dovetail carriage 32 slidably inserted in the dovetail groove 21, a backing plate 33 fixedly connected between the die frame 31 and the dovetail carriage 32, and a first die 34 and a second die 35 installed on the die frame 31; A power assembly 40, the power assembly 40 comprising a crankshaft 41 and a crankshaft connecting rod 42 mounted on the crankshaft 41 and fixed in the mounting hole 22; A lifting drive assembly 50, the lifting drive assembly 50 includes a guide rail pair 51, a main swing arm 52 movably connected to the outside of the guide rail of the guide rail pair 51, an auxiliary swing arm 53 movably connected to the outside of the guide rail of the guide rail pair 51, a linkage assembly 54 for driving the main swing arm 52 to rotate and linked with the crankshaft 41, and an auxiliary spring assembly 55 that provides restoring force for the main swing arm 52 and the auxiliary swing arm 53. The slider of the guide rail pair 51 is fixed to the bottom plate of the dovetail slide 32. When the crankshaft 41 is driven to rotate by the power source, the punch 20 is driven to slide back and forth on the fuselage 10 through the crankshaft connecting rod 42. At the same time, since the linkage assembly 54 is linked with the crankshaft 41, when the main swing arm 52 is driven by the linkage assembly 54 to swing, the guide rail pair 51 is pulled up and down through the main swing arm 52, thereby achieving the effect of driving the die assembly 30 to rise and fall.

[0017] The linkage assembly 54 includes a lower shaft 541, an impulse rod 542, a cam 543 and a swing frame 544. The right end of the impulse rod 542 is provided with an opening 542A, the end of the lower shaft 541 passes through the opening 542A and is fixed to the cam 543, and rollers 545 in contact with the cam 543 are provided on both symmetrical sides of the opening 542. The swing frame 544 is movably connected to the middle part of the impulse rod 542 and is connected to the main swing arm 52. The lower shaft 541 is connected to the main swing arm 52. The gear set 546 is linked with the crankshaft 41. When the crankshaft 41 rotates, it also drives the lower shaft 541 to rotate. Then the cam 543 touches the roller 545, thereby pushing the impulse rod 542 to move relative to the lower shaft through the roller 545, thereby driving the swing frame 544 to swing through the impulse rod 542, and driving the main swing arm 52 to swing through the swing frame 544, thereby achieving the effect of lifting the height of the guide rail pair 51 and driving the die assembly to rise and fall through the dovetail drag plate.

[0018] In this embodiment, a guide groove 542B is provided at the left end of the impulse rod 542, and the swing frame 544 is movably connected to a connecting block 542C installed in the guide groove 542B. A spring buffer 542D is provided between the connecting block 542 and the left end of the impulse rod 542 to reduce noise when pushing the swing frame 544 to swing.

[0019] In this embodiment, the auxiliary spring assembly 55 includes two swing arm levers 551, one end of which is respectively connected to the main swing arm 52 and the auxiliary swing arm 53, a connecting rod 552 movably connected to the other end of the two swing arm levers 551, and a spring rebounder 553 fixed to the outside of the fuselage 10 and connected to the connecting rod 552. When the main swing arm 52 and the auxiliary swing arm 53 are swung to compress the spring rebounder 553, the rebound force provided by the spring rebounder 553 assists the lifting linkage assembly to return to its initial position, thereby improving the lifting efficiency of the die assembly 30 and improving the speed of repeated lifting and lowering of the die assembly.

[0020] What the present invention aims to achieve is that, through the cooperation of the lifting drive assembly of the present invention and the lifting drive assembly, the die assembly can be driven to move and lift at the same time, while the auxiliary spring assembly can provide auxiliary force for the lifting of the die assembly, thereby improving the lifting speed and efficiency.

[0021] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A one-two punch die lifting structure for an ultra-long heading machine, characterized in that include: A fuselage, wherein the fuselage is provided with a slide groove; A punch, the punch being slidably disposed in the slide groove, and the front and rear ends of the punch being respectively provided with a dovetail groove and a mounting hole; A die assembly, the die assembly comprising a die frame, a dovetail slide plate slidably inserted in the dovetail groove, a pad fixedly connected between the die frame and the dovetail slide plate, and a first die and a second die mounted on the die frame; A power assembly, the power assembly comprising a crankshaft and a crankshaft connecting rod mounted on the crankshaft and fixed in the mounting hole; and, A lifting drive assembly, the lifting drive assembly includes a guide rail pair, a main swing arm movably connected to the outside of the guide rail of the guide rail pair, an auxiliary swing arm movably connected to the outside of the guide rail of the guide rail pair, a linkage assembly for driving the main swing arm to rotate and linked with the crankshaft, and an auxiliary spring assembly that provides restoring force for the main swing arm and the auxiliary swing arm. The slider of the guide rail pair is fixed to the bottom plate of the dovetail drag plate.

2. The one-two punch die lifting structure of the super-long heading machine as claimed in claim 1, characterized in that: The linkage assembly includes a lower shaft, an impulse rod, a cam and a swing frame. An opening is provided at the right end of the impulse rod, and the end of the lower shaft passes through the opening and is fixed to the cam. Rollers in contact with the cam are provided on both symmetrical sides of the opening. The swing frame is movably connected to the middle part of the impulse rod and is connected to the main swing arm. The lower shaft is linked to the crankshaft through a gear set.

3. The one-two punch die lifting structure of the super-long heading machine as claimed in claim 2, characterized in that: A guide groove is arranged at the left end of the impulse rod, the swing frame is movably connected to a connecting block installed in the guide groove, and a spring buffer is arranged at the connecting block and the left end of the impulse rod.

4. The one-two punch die lifting structure of the super-long heading machine as claimed in claim 3, characterized in that: The auxiliary spring assembly includes two swing arm levers whose one ends are respectively connected to the main swing arm and the auxiliary swing arm, connecting rods movably connected to the other ends of the two swing arm levers, and a spring rebounder fixed to the outside of the fuselage and connected to the connecting rods.

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