Automatic cutting machine for crank shaft production

Abstract

The application discloses a reinforcing steel bar automatic cutting-off machine for crank shaft production and relates to the technical field of reinforcing steel bar cutting processing. The cutting-off machine comprises a cutting frame, the top end of the cutting frame is provided with a cutting platform, the top end of the cutting platform is provided with a side plate, the side plate is provided with a fixed cutter seat, the fixed cutter seat is provided with a fixed cutting knife, the side of the fixed cutter seat away from the side plate is provided with a movable cutting knife, the end of the movable cutting knife away from the fixed cutter seat is provided with a movable cutter seat, the other end of the movable cutter seat is movably arranged through a movable limiting support, the end of the movable cutter seat is provided with a movable mechanism, the movable mechanism is used for driving the movable cutter seat to move, and the movable mechanism is arranged on the cutting frame. The cutting-off machine can adjust the length of the reinforcing steel bar to be cut according to the requirement, thereby guaranteeing the cutting precision, and can avoid rebound and other accidents during the cutting of the reinforcing steel bar, thereby guaranteeing the safety of the operation process.

Description

Technical Field

[0001] This invention relates to the field of rebar cutting and processing technology, specifically to an automatic rebar cutting machine produced by crankshaft manufacturing. Background Technology

[0002] The crankshaft is a core transmission component in machinery, enabling the conversion between rotary motion and reciprocating linear motion. It mainly consists of a front shaft, main journal, connecting rod journal (crank pin), crank arm, counterweight, and rear flange. The journal surface has oil holes for lubrication, and it is machined from steel bars. Typical applications of crankshafts include: Automobile / Marine Engine: It converts the reciprocating force of the piston into rotational power output and is the core component of the internal combustion engine.

[0003] Oil extraction pumping unit: It converts the rotary motion of the motor into the reciprocating motion of the sucker rod and is a key component of the transmission system.

[0004] Industrial equipment: Widely used in various types of machinery such as coal feeders, machine tools, sewing machines, forklift steering mechanisms, and agricultural machinery.

[0005] In civilian applications: The transmission shaft at the bicycle pedal is also a crankshaft structure, responsible for transmitting pedaling torque to the chain.

[0006] The steel bars used to manufacture crankshafts need to be cut to the required length depending on the application. Currently available equipment for cutting (crankshaft) steel bars, due to technological limitations, cannot effectively control the cutting length, easily leading to material waste. Summary of the Invention

[0007] The objective of this invention is achieved through the following technical solution: An automatic rebar cutting machine produced by crankshafts includes a cutting frame, with a cutting platform mounted and connected to the top of the cutting frame; A side plate is installed on one side of the top of the cutting platform, a fixed blade holder is installed and connected on the side plate, and a fixed cutting blade is installed and connected on the fixed blade holder; A movable cutting blade is provided on the side of the fixed blade holder away from the side plate; The movable cutting blade is connected to a movable blade holder at one end away from the fixed blade holder. The other end of the movable blade holder passes movably through the movable limiting support and is connected to a movable mechanism. The movable mechanism is used to drive the movable blade holder to move and is used to be installed on the cutting machine frame. The movable limiting support is fixedly installed on the cutting platform by bolts. One end of the fixed tool holder is provided with an adjustment mechanism for adjusting and controlling the movement of the fixed tool holder, and the adjustment mechanism is movably connected to the cutting platform.

[0008] Preferably, the adjusting mechanism includes an adjusting sliding support; The bottom end of the adjustable sliding support is horizontally slidable with the top end of the cutting platform via an electric sliding guide rail, and the sliding direction of the electric sliding guide rail is perpendicular to the projection of the fixed tool holder. A limiting blind hole is provided at the upper part of the adjustable sliding support and at one end near the fixed knife seat. One end of the cut steel bar is used to move through the limiting blind hole and the end is used to abut against the bottom of the inner wall of the limiting blind hole.

[0009] Preferably, a first rebar limiting seat is provided on the side of the fixed blade holder near the adjusting sliding support. The first rebar limiting seat is used to connect and fix to the top of the cutting platform. The first rebar limiting seat has a first limiting groove for limiting the rebar. A second rebar limiting seat is provided on the side of the fixed blade holder away from the adjusting sliding support. The second rebar limiting seat is used to connect and fix to the top of the cutting platform. The second rebar limiting seat has a second limiting groove for limiting the rebar. A second limiting baffle is provided at the top of the second limiting groove. The second limiting baffle is used to connect to the second rebar limiting seat. The rebar is used to move through the second limiting groove, and the second limiting baffle is used to limit the rebar in the second limiting groove.

[0010] Preferably, the movable mechanism includes a movable hinge block; One end of the movable hinge block is hinged to the movable blade holder via a hinge seat, and the other end of the movable hinge block is connected to the movable rotating shaft via a fixing block. Both ends of the movable rotating shaft are rotatably connected to the movable shaft support via bearings, and the movable shaft support is fixed to the top of the cutting machine frame. A large movable gear is connected to the movable shaft; The movable large gear meshes with a primary transmission pinion, which is positioned below the movable large gear. The primary transmission pinion is used to connect to the primary drive shaft. The two ends of the primary drive shaft are rotatably connected to the primary shaft support through bearings. The primary shaft support is used to fix the cutting machine frame. The primary drive shaft is also connected to a primary drive gear. The primary drive gear meshes with a secondary transmission pinion, which is positioned below the primary drive gear. The secondary transmission pinion is connected to the secondary drive shaft. One end of the secondary drive shaft is rotatably connected to the secondary fixed support via a bearing. The secondary fixed support is used to fix the shaft to the cutting machine frame. The other end of the secondary drive shaft rotatably passes through the secondary limiting support via a bearing, and a connecting pulley is connected to its end. The secondary limiting support is used to fix the shaft to the cutting machine frame. The connecting pulley is used to drive the drive pulley via a belt. The drive pulley is used to connect to the output end of the geared motor. The geared motor is used to connect and fix to the cutting machine frame via a bracket.

[0011] Preferably, a conveying and moving mechanism for conveying moving steel bars is provided on the side of the cutting frame away from the adjusting sliding support. The conveying and moving mechanism is used to be installed and connected to the conveying platform, and the conveying platform is used to connect to the cutting frame through a conveying bracket. The conveying and moving mechanism includes a primary conveying traction structure, a secondary conveying traction structure, and a rolling straightening structure; The secondary conveying traction structure is installed on the conveying platform and near one end of the adjusting sliding support; The primary conveying traction structure is installed on the side of the conveying platform that is away from the secondary conveying traction structure. The rolling straightening structure is used to be installed between the primary conveying traction structure and the secondary conveying traction structure.

[0012] Preferably, the primary conveying traction structure includes a primary traction base; The primary traction base is used for mounting and connecting to the conveying platform; The primary traction base has a channel; A primary fixing seat is provided below the channel of the primary traction base, and the primary fixing seat is used to connect and fix to the primary traction base. A primary fixed shaft is rotatably mounted on the primary fixed seat via a bearing. One end of the primary fixed shaft is connected to a primary fixed traction wheel. The outer wall of the primary fixed traction wheel is provided with a primary limiting traction groove for limiting the reinforcing bar. A primary connecting gear is connected to the other side of the primary fixed rotating shaft; The first-stage connecting gear is connected to a first-stage connecting pulley at the end away from the first-stage fixed seat. The first-stage connecting pulley is connected to the first-stage drive pulley via a belt. The first-stage drive pulley is connected to the output end of the traction motor. The traction motor is mounted on the conveyor bracket. The first-level fixed traction wheel is provided with first-level traction guide sleeves on both sides for the passage of reinforcing bars. The first-level traction guide sleeves are connected to the first-level traction base through a fixing plate.

[0013] Preferably, a primary movable seat is provided above the channel of the primary traction base, and the primary movable seat is used to be raised and lowered in relation to the channel of the primary traction base; The primary movable seat is rotatably mounted on a primary movable shaft via a bearing. One end of the primary movable shaft is connected to a primary movable traction wheel. The outer wall of the primary movable traction wheel is provided with a primary limiting traction groove for limiting the reinforcing bar. The other end of the primary movable shaft is connected to a primary drive gear via a shaft connector; The primary drive gear is configured to mesh with the primary connecting gear. A primary movable drive adjustment rod is movably disposed above the primary movable seat. One end of the primary movable drive adjustment rod is rotatably connected to the primary movable seat via a bearing, and the other end of the primary movable drive adjustment rod is threaded through the top of the primary movable seat and connected to an adjustment rotary handwheel.

[0014] Preferably, the secondary conveying traction structure includes a secondary traction base; The secondary traction base is used for mounting and connecting to the conveying platform; The secondary traction base has a channel; A secondary fixing seat is provided below the channel of the secondary traction base, and the secondary fixing seat is used to connect and fix to the secondary traction base; A secondary fixed shaft is rotatably mounted on the secondary fixed base via a bearing. One end of the secondary fixed shaft is connected to a secondary fixed traction wheel. The outer wall of the secondary fixed traction wheel is provided with a secondary limiting traction groove for limiting the reinforcing bar. A secondary connecting gear is connected to the other side of the secondary fixed rotating shaft; The end of the secondary connecting gear away from the secondary fixed seat is connected to a secondary connecting pulley. The secondary connecting pulley is connected to the secondary drive pulley via a belt. The secondary drive pulley is connected to the output end of the traction motor. The traction motor is mounted on the conveying bracket. The two sides of the secondary fixed traction wheel are respectively provided with secondary traction guide sleeves for the passage of reinforcing bars. The secondary traction guide sleeves are connected to the secondary traction base through a fixing plate.

[0015] Preferably, a secondary movable seat is provided above the channel of the secondary traction base, and the secondary movable seat is used to be raised and lowered in relation to the channel of the secondary traction base; The secondary movable seat is rotatably mounted on a secondary movable shaft via a bearing. One end of the secondary movable shaft is connected to a secondary movable traction wheel. The outer wall of the secondary movable traction wheel is provided with a secondary limiting traction groove for limiting the reinforcing bar. The other end of the secondary movable rotating shaft is connected to a secondary drive gear via a shaft connector; The secondary drive gear is configured to mesh with the secondary connecting gear. A secondary movable drive adjustment rod is movably disposed above the secondary movable seat. One end of the secondary movable drive adjustment rod is rotatably connected to the secondary movable seat via a bearing, and the other end of the secondary movable drive adjustment rod is threaded through the top of the secondary movable seat and connected to an adjustment rotary handwheel.

[0016] Preferably, the rolling straightening structure includes a rolling adjusting sleeve; The rolling adjusting sleeve has a through-hole for the passage of reinforcing bars; The two ends of the rolling adjusting sleeve are respectively connected to rolling shafts. The rolling shafts pass through the rolling fixed support through the bearings. The rolling fixed support is used to connect and fix with the conveying platform. The rolling shafts are respectively provided with passage openings for the passage of steel bars. One of the rolling shafts is connected to a small connecting pulley, which is connected to a large driving pulley via a belt drive. The large driving pulley is used to connect to the output end of a straightening drive motor, which is used to connect and fix to the conveying bracket.

[0017] The beneficial effects of this invention are: the purpose of this invention is to provide an automatic rebar cutting machine for crankshaft production, which is used for rapid cutting of (crankshaft) rebar. The cutting machine of this application is: 1. It can adjust the length of the steel bars to be cut as needed to ensure cutting accuracy; 2. It can prevent rebound and other accidents during steel bar cutting, ensuring the safety of the operation process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the connection structure of an automatic rebar cutting machine for crankshaft production according to the present invention; Figure 2 This is an exploded schematic diagram of the connection structure of an automatic rebar cutting machine for crankshaft production according to the present invention; Figure 3 This is a schematic diagram of the cutting frame connection structure of an automatic rebar cutting machine for crankshaft production according to the present invention; Figure 4 This is an exploded schematic diagram of the cutting frame connection structure of an automatic rebar cutting machine for crankshaft production according to the present invention; Figure 5 This is a schematic diagram of the conveying and moving mechanism connection structure of an automatic rebar cutting machine for crankshaft production according to the present invention; Figure 6This is an exploded schematic diagram of the connecting structure of the conveying and moving mechanism of an automatic rebar cutting machine for crankshaft production according to the present invention. Figure 7 This is a schematic diagram of the primary conveying and traction structure of an automatic rebar cutting machine for crankshaft production according to the present invention. Figure 8 This is a schematic diagram of the rolling straightening structure of an automatic rebar cutting machine for crankshaft production according to the present invention; Figure 9 This is a schematic diagram of the two-stage conveying and traction structure of an automatic rebar cutting machine for crankshaft production according to the present invention; Figure 10 This is a schematic diagram of the rolling grinding structure of an automatic rebar cutting machine for crankshaft production according to the present invention. Figure 11 This is a schematic diagram of the limiting clamping structure of an automatic rebar cutting machine for crankshaft production according to the present invention; In the diagram, 1-cutting frame, 11-cutting platform, 12-side plate, 13-fixed blade holder, 14-movable blade holder, 15-adjustable sliding support, 2-conveying bracket, 21-conveying platform, 22-primary traction base, 33-secondary traction base, 44-rolling adjusting sleeve, 55-grinding base, 66-limiting clamping side plate, 101-first rebar limiting seat, 102-secondary rebar limiting seat, 131-fixed cutting blade, 141-movable cutting blade, 142-movable limiting support, 143-movable hinge block, 221-primary fixed seat, 222-primary movable seat, 223-primary traction guide sleeve, 224-primary movable drive adjusting rod, 331-secondary fixed seat. 332-Secondary traction guide sleeve; 333-Secondary movable seat; 334-Secondary movable drive adjusting rod; 441-Rolling fixed support; 442-Connecting small pulley; 551-Upper grinding roller; 552-Lower grinding roller; 553-Grinding hinge seat; 554-Spring connecting lock; 556-Grinding drive motor; 661-Limit clamping seat; 662-Limit clamping block; 663-Pushing block; 664-Pushing cylinder; 1431-Modible rotating shaft; 1432-Modible large gear; 1433-First-stage transmission small gear; 1434-First-stage drive rotating shaft; 1435-First-stage drive large gear; 1436-Secondary transmission small gear; 1437-Secondary drive rotating shaft; 1438-Reduction motor; 2211-First-stage fixed traction wheel; 2212-First-stage connecting gear; 2221-First-stage movable traction wheel; 2222-First-stage drive gear. 3311 - Secondary fixed traction wheel, 3313 - Secondary connecting gear, 3331 - Secondary movable traction wheel, 3333 - Secondary drive gear. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 11 As shown, an automatic rebar cutting machine for crankshaft production is disclosed. The cutting machine of this application is used to quickly cut rebar (especially rebar for crankshaft production). The cutting machine of this application is different from the original cutting machine. The cutting machine of this application can not only adjust the length of the rebar to be cut as needed to ensure the cutting accuracy, but also avoids rebound and other accidents during rebar cutting, thus ensuring the safety of the operation process.

[0021] The cutting machine of this application includes a cutting frame 1, such as Figure 2 , Figure 3 , Figure 4 As shown, a cutting platform 11 is installed and connected to the top of the cutting frame 1; a side plate 12 is installed on one side of the top of the cutting platform 11, a fixed blade holder 13 is installed and connected to the side plate 12, and a fixed cutting blade 131 is installed and connected to the fixed blade holder 13; a movable cutting blade 141 is provided on the side of the fixed blade holder 13 away from the side plate 12; a movable blade holder 14 is connected to one end of the movable cutting blade 141 away from the fixed blade holder 13, and the other end of the movable blade holder 14 movably passes through a movable limiting support 142, and a movable mechanism is connected to the end of the movable blade holder 14. The movable mechanism is used to drive the movable blade holder 14 to move, and the movable mechanism is used to be installed and connected to the cutting frame 1; the movable limiting support 142 is fixedly installed on the cutting platform 11 by bolts; an adjustment mechanism is provided at one end of the fixed blade holder 13 to adjust and control the movement of the fixed blade holder 13, and the adjustment mechanism is movably connected to the cutting platform 11. The rebar to be cut passes between the fixed cutting blade 131 of the fixed blade holder 13 and the movable cutting blade 141 of the movable blade holder 14 (both the fixed cutting blade 131 and the movable cutting blade 141 are existing tools used for cutting rebar); then the distance is adjusted by controlling the adjustment mechanism to meet the length of the rebar to be cut; then the movable mechanism is controlled to drive the movable blade holder 14 to move towards one side of the fixed blade holder 13 under the limiting and guiding action of the movable limiting support 142, causing the movable cutting blade 141 of the movable blade holder 14 to move relative to the fixed cutting blade 131 of the fixed blade holder 13, and cutting the rebar placed between the movable cutting blade 141 and the fixed cutting blade 131 with the cutting length adjusted.

[0022] In this embodiment, the inner wall of the movable limiting support 142 is provided with limiting grooves around its perimeter; the outer walls of the movable tool holder 14, which moves through the movable limiting support 142, are respectively provided with limiting sliders that are adapted to the limiting grooves provided around the inner wall of the movable limiting support 142. In this way, when the movable tool holder 14 slides in the movable limiting support 142, it can not only provide limiting guidance and reduce deviation, but also provide limiting protection (preventing the movable tool holder 14 from sliding beyond the limit distance).

[0023] Furthermore, the adjustment mechanism of this application includes an adjustment sliding support 15; the bottom end of the adjustment sliding support 15 is horizontally slidable with the top end of the cutting platform 11 via an electric sliding guide rail, and the sliding direction of the electric sliding guide rail is perpendicular to the projection of the fixed tool holder 13; a limit blind hole is opened at the upper part of the adjustment sliding support 15 and at one end near the fixed tool holder 13, and one end of the steel bar to be cut (for producing crankshafts and similar steel bars) is movably inserted into the limit blind hole (opened in the adjustment sliding support 15) and the end is used to abut against the bottom end of the inner wall of the limit blind hole.

[0024] Meanwhile, a first rebar limiting seat 101 is provided on the side of the fixed blade holder 13 near the adjusting sliding support 15. The first rebar limiting seat 101 is used to connect and fix to the top of the cutting platform 11. The first rebar limiting seat 101 has a first limiting groove for limiting the rebar. A second rebar limiting seat 102 is provided on the side of the fixed blade holder 13 away from the adjusting sliding support 15. The second rebar limiting seat 102 is used to connect and fix to the top of the cutting platform. The second rebar limiting seat 102 has a second limiting groove for limiting the rebar. A second limiting baffle is provided at the top of the second limiting groove. The second limiting baffle is used to connect to the second rebar limiting seat 102. The rebar is used to move through the second limiting groove, and the second limiting baffle is used to limit the rebar in the second limiting groove. The rebar segments to be cut are passed through the second limiting groove of the second rebar limiting seat 102, and the second limiting baffle is used to limit the rebar (movable) in the second limiting groove; then, the rebar passes through the "cutting gap" left between the movable cutting blade 141 and the fixed cutting blade 131, and then passes through the first limiting groove of the first rebar limiting seat 101, with one end entering the limiting blind hole opened in the adjusting sliding support 15; then, according to the required length of the rebar to be cut, the adjusting sliding support 15 is moved to a suitable position by controlling the electric sliding guide rail (the bottom end of the limiting blind hole opened in the adjusting sliding support 15 is at the position where the movable cutting blade 141 and the fixed cutting blade 131 cut the rebar; the relative distance between the two is the length of the rebar segment to be cut); then, the end of the rebar placed in the limiting blind hole opened in the adjusting sliding support 15 is moved and abuts against. At the bottom of the limiting blind hole; then control the movable mechanism to move the movable cutting blade 141 of the movable blade holder 14 toward one side of the reinforcing bar (the side of the fixed cutting blade 131), and cut the reinforcing bar through the shearing action of the movable cutting blade 141 and the fixed cutting blade 131; at the same time, during the cutting process, since one end of the reinforcing bar is placed in the limiting blind hole opened in the adjusting sliding support 15 and is limited by the first limiting groove opened in the first reinforcing bar limiting seat 101; the other end of the reinforcing bar is placed in the second limiting groove of the second reinforcing bar limiting seat 102 and is limited by the second limiting baffle; therefore, the reinforcing bar cut into segments and close to the adjusting sliding support 15 will not have a "rebound effect"; and the reinforcing bar close to the side of the second reinforcing bar limiting seat 102 will also not have a "rebound effect"; thus ensuring the safety during cutting.

[0025] Furthermore, the movable mechanism of this application includes a movable hinge block 143; one end of the movable hinge block 143 is hinged to the movable blade holder 14 via a hinge seat, and the other end of the movable hinge block 143 is connected to the movable rotating shaft 1431 via a fixing block. Both ends of the movable rotating shaft 1431 are rotatably connected to a movable shaft support via bearings, and the movable shaft support is fixed to the top of the cutting frame 1. A movable large gear 1432 is connected to the movable rotating shaft 1431; the movable large gear 1432 is engaged with a primary transmission small gear 1433, which is positioned below the movable large gear 1432; the primary transmission small gear 1433 is connected to a primary drive shaft 1434, both ends of which are rotatably connected to a primary shaft support via bearings, and the primary shaft support is fixed to the cutting frame 1. A primary drive gear 1435 is also connected to the primary drive shaft 1434; the primary drive gear 1435 meshes with a secondary transmission pinion 1436, which is positioned below the primary drive gear 1435; the secondary transmission pinion 1436 is connected to the secondary drive shaft 1437, one end of which is rotatably connected to a secondary fixed support via a bearing, which is fixed to the cutting frame 1; the other end of the secondary drive shaft 1437 rotatably passes through a secondary limit support via a bearing, and a connecting pulley is connected to the end of the secondary limit support, which is fixed to the cutting frame; the connecting pulley is connected to the drive pulley via a belt, which is connected to the output end of the geared motor 1438, which is fixed to the cutting frame 1 via a bracket. When it is necessary to control the movable cutter holder 14 to move the movable cutting blade 141 towards the side of the rebar (the side of the fixed cutting blade 131), the geared motor 1438 is controlled to rotate. The geared motor 1438 drives the secondary drive shaft 1437 to rotate via a belt drive. The secondary drive shaft 1437 then drives the primary drive gear 1435 to rotate via the secondary drive pinion 1436. The primary drive gear 1435 drives the primary drive shaft 1434 to rotate via the primary drive shaft. 1434 drives the primary transmission pinion 1433 to rotate, which in turn drives the movable large gear 1432 to rotate, which in turn drives the movable shaft 1431 to rotate (controlling the geared motor 1438 to rotate at an appropriate angle); finally, the rotation of the movable shaft 1431 pushes the movable hinge block 143 to move the movable cutter holder 14 toward one end of the steel bar, and the steel bar is cut by the shearing action of the movable cutting blade 141 and the fixed cutting blade 131.

[0026] It should be noted that the reason for designing the moving mechanism in this way is that it can stably and accurately drive the moving cutter holder 14 to move through the "secondary gear transmission rotation" action, and cut the steel bar through the shearing action of the moving cutting blade 141 and the fixed cutting blade 131.

[0027] Furthermore, a conveying and moving mechanism for conveying moving steel bars is provided on the side of the cutting frame 1 away from the adjusting sliding support 15, such as... Figure 5 , Figure 6 As shown, the conveying and moving mechanism is installed and connected to the conveying platform 21, which is connected to the cutting frame 1 via the conveying bracket 2. The conveying and moving mechanism includes a primary conveying traction structure, a secondary conveying traction structure, and a rolling straightening structure. The secondary conveying traction structure is located on the conveying platform 21 at one end near the adjusting sliding support 15; the primary conveying traction structure is located on the conveying platform 21 at the side away from the secondary conveying traction structure; and the rolling straightening structure is located between the primary and secondary conveying traction structures. The steel bars to be cut are automatically fed through the conveying and moving mechanism, which controls the movement of the steel bars, thus replacing manual labor, improving efficiency, and saving costs.

[0028] Among them: such as Figure 7 As shown, the primary conveying traction structure includes a primary traction base 22; the primary traction base 22 is used to be installed and connected to the conveying platform 21; the primary traction base 22 has a channel; a primary fixing seat 221 is provided below the channel of the primary traction base 22, and the primary fixing seat 221 is used to connect and fix to the primary traction base 22 (for installation and fixing at the bottom position of the channel opened by the primary traction base 22); a primary fixing shaft is rotatably mounted on the primary fixing seat 221 through a bearing, one end of the primary fixing shaft is connected to a primary fixing traction wheel 2211, and the outer wall of the primary fixing traction wheel 2211 has a groove for... The primary limiting traction groove for limiting the reinforcing bars; a primary connecting gear 2212 is connected to the other side of the primary fixed rotating shaft; a primary connecting pulley is connected to the end of the primary connecting gear 2212 away from the primary fixed seat 221, the primary connecting pulley is used to drive the primary driving pulley through the belt, the primary driving pulley is connected to the output end of the traction motor, the traction motor is used to be installed on the conveying bracket 2; primary traction guide sleeves 223 for the passage of reinforcing bars are respectively provided on both sides of the primary fixed traction wheel 2211, the primary traction guide sleeves 223 are used to be connected to the primary traction base 22 through the fixing plate.

[0029] Meanwhile, a primary movable seat 222 is provided above the channel of the primary traction base 22. The primary movable seat 222 is used for lifting and lowering the primary traction base 22. A primary movable shaft is rotatably mounted on the primary movable seat 222 via bearings. One end of the primary movable shaft is connected to a primary movable traction wheel 2221. The outer wall of the primary movable traction wheel 2221 has a primary limiting traction groove for limiting the reinforcing bar. The other end of the primary movable shaft is connected to a primary drive gear 2222 via a shaft connector (the primary drive gear 2222 is "rotationally" limited relative to the primary traction base 22). The shaft that will be used to connect the first-stage drive gear 2222 is connected to the first-stage traction base 22 via a bracket (not shown in the attached drawings of the instruction manual); the first-stage drive gear 2222 is used to mesh with the first-stage connecting gear 2212; a first-stage movable drive adjustment rod 224 is movably arranged above the first-stage movable seat 222. One end of the first-stage movable drive adjustment rod 224 is rotatably connected to the first-stage movable seat 222 via a bearing, and the other end of the first-stage movable drive adjustment rod 224 is threaded through the top of the first-stage movable seat and connected to an adjustment rotary handwheel.

[0030] The steel bar to be cut passes between the primary limiting traction groove of the primary fixed traction wheel 2211 and the primary limiting traction groove of the primary movable traction wheel 2221. The traction motor drives the primary drive pulley to rotate. The primary drive pulley drives the primary connecting gear 2212 to rotate via a belt. The primary connecting gear 2212 then drives the primary drive gear 2222, which is meshed with the primary connecting gear 2212, to rotate. The primary connecting gear 2212 drives the primary fixed traction wheel 2211 to rotate. The primary drive gear 2222 drives the primary movable traction wheel 2221 to rotate. Finally, the primary fixed traction wheel 2211 and the primary movable traction wheel 2221 rotate in the same direction, providing a forward frictional traction force, which moves the steel bar to be cut forward.

[0031] Simultaneously, rotating the adjustment handwheel causes the primary movable drive adjustment rod 224 to move up and down relative to the primary fixed seat 221. Since the shaft of the primary drive gear 2222 is connected to the primary movable shaft via a shaft connector, and the shaft of the primary drive gear 2222 is set to a rotation limit relative to the primary traction base 22, the primary movable drive adjustment rod 224 drives the primary movable seat 222 to move up and down relative to the primary fixed seat 221, adjusting the relative position of the primary movable traction wheel 2221 and the primary drive gear 2222, thereby conveying traction and moving steel bars of different diameters forward.

[0032] Furthermore, such as Figure 9As shown, the secondary conveying traction structure of this application includes a secondary traction base 33; the secondary traction base 33 is used to be installed and connected to the conveying platform 31 (set on the side near the adjusting sliding support 15); the secondary traction base 33 has a channel; a secondary fixing seat 331 is set below the channel of the secondary traction base 33, the secondary fixing seat 331 is used to connect and fix to the secondary traction base 33 (used to be installed and fixed at the bottom position of the channel opened by the secondary traction base 33); a secondary fixing shaft is rotatably mounted on the secondary fixing seat 331 through a bearing, one end of the secondary fixing shaft is connected to a secondary fixing traction wheel 3311, the secondary fixing traction wheel 3311... The outer wall of 311 is provided with a secondary limiting traction groove for limiting the reinforcing bars; the other side of the secondary fixed rotating shaft is connected to a secondary connecting gear 3313; the end of the secondary connecting gear 3313 away from the secondary fixed seat 331 is connected to a secondary connecting pulley, the secondary connecting pulley is used to drive the secondary driving pulley through a belt, the secondary driving pulley is connected to the output end of the traction motor, and the traction motor is used to be installed on the conveying bracket 3; the two sides of the secondary fixed traction wheel 3311 are respectively provided with secondary traction guide sleeves 332 for the passage of reinforcing bars, and the secondary traction guide sleeves 332 are used to be connected to the secondary traction base 33 through a fixing plate.

[0033] Furthermore, a secondary movable seat 333 is provided above the channel of the secondary traction base 33. The secondary movable seat 333 is used for lifting and lowering the channel of the secondary traction base 33. A secondary movable shaft is rotatably mounted on the secondary movable seat 333 via bearings. One end of the secondary movable shaft is connected to a secondary movable traction wheel 3331. The outer wall of the secondary movable traction wheel 3331 has a secondary limiting traction groove for limiting the reinforcing bar. The other end of the secondary movable shaft is connected to a secondary drive gear 3333 via a shaft connector (the secondary drive gear 3333 is a "rotational" limiting relative to the secondary traction base 33). The shaft that will connect the secondary drive gear 3333 is connected to the secondary traction base 33 via a bracket (not shown in the attached drawings of the instruction manual); the secondary drive gear 3333 is used to mesh with the secondary connecting gear 3313; a secondary movable drive adjustment rod 334 is movably disposed above the secondary movable seat 333, one end of the secondary movable drive adjustment rod 334 is rotatably connected to the secondary movable seat 333 via a bearing, and the other end of the secondary movable drive adjustment rod 334 is threaded through the top of the secondary movable seat and connected to an adjustment rotary handwheel.

[0034] Similarly (based on the same principle as controlling and adjusting the primary conveying traction structure), the steel bar to be cut passes between the secondary limiting traction groove of the secondary fixed traction wheel 3311 and the secondary limiting traction groove of the secondary movable traction wheel 3331. The traction motor drives the secondary drive pulley to rotate. The secondary drive pulley drives the secondary connecting gear 3313 to rotate via a belt. The secondary connecting gear 3313 then drives the secondary drive gear 3333, which is meshed with the secondary connecting gear 3313, to rotate. The secondary fixed traction wheel 3311 rotates via the secondary connecting gear 3313. The secondary movable traction wheel 3331 rotates via the secondary drive gear 3333. Finally, the secondary fixed traction wheel 3311 and the secondary movable traction wheel 3331 rotate in the same direction, providing a forward frictional traction force, which moves the steel bar to be cut forward.

[0035] Simultaneously, rotating the adjustment handwheel causes the secondary movable drive adjustment rod 334 to move up and down relative to the secondary fixed seat 331. Since the shaft of the secondary drive gear 3333 is connected to the secondary movable shaft through the shaft connector, and the shaft of the secondary drive gear 3333 is set to be limited in rotation relative to the secondary traction base 33, the secondary movable drive adjustment rod 334 drives the secondary movable seat 333 to move up and down relative to the secondary fixed seat 331, adjusting the relative position of the secondary movable traction wheel 3331 and the secondary drive gear 3333, thereby conveying traction and moving steel bars of different diameters forward.

[0036] It should be noted that the traction motor used to drive the primary fixed traction wheel 2211 and the primary movable traction wheel 2221 of the primary conveying traction structure to rotate, and the traction motor used to drive the secondary fixed traction wheel 3311 and the secondary movable traction wheel 3331 of the secondary conveying traction structure to rotate, can be the same motor, which can be achieved by connecting them through the existing belt drive method (preferably the same motor, which can save costs and "synchronize" the primary and secondary conveying traction structures to provide forward traction force to the steel bars).

[0037] Furthermore, such as Figure 8As shown, the rolling straightening structure of this application includes a rolling adjusting sleeve 44; the rolling adjusting sleeve 44 has a through-hole for the passage of reinforcing bars; the two ends of the rolling adjusting sleeve 44 are respectively connected to rolling shafts, the rolling shafts rotatably pass through the rolling fixed support 441 via bearings, the rolling fixed support 441 is used to connect and fix with the conveying platform 21, and the rolling shafts have through-holes for the passage of reinforcing bars; a connecting small pulley 442 is connected to one of the rolling shafts, the connecting small pulley 442 is connected to a driving large pulley via belt drive, the driving large pulley is used to connect to the output end of the straightening drive motor, and the straightening drive motor is used to connect and fix with the conveying bracket 2. The straightening drive motor drives the rolling adjusting sleeve 44 to rotate, which plays a guiding and positioning role (it can be understood as straightening guidance, not actual adjustment of the steel bar, mainly for guiding and positioning purposes). This allows the steel bar to pass accurately and smoothly through the "cutting gap" left between the movable cutting blade 141 and the fixed cutting blade 131 on the cutting platform 11 and enter the limiting blind hole opened in the adjusting sliding support 15. Furthermore, through the rotation of the rolling adjusting sleeve 44, the inner wall of the rolling adjusting sleeve 44 is used to "roll friction" with the surface of the steel bar, which plays a "preliminary" deburring (grinding) role on the steel bar (equivalent to the effect of a "centerless" grinder).

[0038] Furthermore, in order to allow for further deburring (grinding) of the reinforcing bars, a rolling grinding structure is installed on the side of the secondary traction base 33 away from the rolling straightening structure (equivalent to the rear of the "secondary conveying traction structure" in the process); such as Figure 10As shown, the rolling grinding structure includes a grinding base 55, which is bolted to the side of the conveyor platform 31 near the adjusting sliding support 15. An upper grinding roller 551 and a lower grinding roller 552 are rotatably mounted on the grinding base 55. The lower grinding roller 552 is connected to a lower grinding shaft, one end of which passes rotatably through the grinding base 55 via a bearing, and the end is connected to the output end of a grinding drive motor 556 via a shaft connector. The grinding drive motor 556 is mounted on the grinding base 55 via a bracket. On the base 55, an upper grinding roller 551 is movably positioned above the lower grinding roller 552. The upper grinding roller 551 is rotatably connected to an upper grinding shaft, one end of which passes through an upper grinding hinge seat 553 via a bearing. The grinding hinge seat 553 is hinged to the top of the grinding base 55 (rotatably positioned relative to the grinding base 55). A spring-loaded locking buckle 554 is provided at the other end of the grinding hinge seat 553, connecting it to the grinding base 55. After the reinforcing bar exits the rolling straightening structure, it passes through the rolling grinding structure for further deburring (grinding). Furthermore, by adjusting the relative "angle" between the grinding hinge seat 553 and the grinding base 55, deburring (grinding) of reinforcing bars of different diameters can be achieved.

[0039] Furthermore, a limit clamping structure is also provided on the side of the rolling grinding structure near the adjusting sliding support 15. The limit clamping structure is used for installation on the conveying platform 31; such as Figure 11 As shown, the limiting clamping structure includes a limiting clamping side plate 66, which is installed and connected to the conveying platform 31. The limiting clamping side plate 66 has a limiting clamping channel for the passage of reinforcing bars. A limiting clamping seat 661 is installed and connected on the limiting clamping side plate 66. The limiting clamping seat 661 has a limiting movable slide groove. A limiting clamping block 662 is slidably adapted in the limiting movable slide groove. One end of the limiting clamping block 662 near the limiting clamping channel is used to abut against the reinforcing bars passing through the limiting clamping channel. The other end of the limiting clamping block 662 is hinged to the pushing block 663 through a hinge seat. The other end of the pushing block 663 is connected to the output end of the pushing cylinder 664, and the pushing cylinder 664 drives the pushing block 663 to move. When cutting reinforcing bars, to prevent the reinforcing bars from "wobbling or moving", the push cylinder 664 is controlled to drive the push block 663 to move towards one side of the limiting clamping channel. The push block 663 drives the limiting clamping block 662 to abut against the reinforcing bar under the "limiting guidance" of the limiting clamping seat 661, so that the end of the limiting clamping block 661 abuts against the reinforcing bar, and the reinforcing bar is limited in the limiting movable slide groove, so as to prevent shaking or moving during cutting, thereby avoiding rebound and other factors that affect the cutting quality.

Claims

1. An automatic rebar cutting machine for crankshaft production, comprising a cutting frame, characterized in that, A cutting platform is installed and connected to the top of the cutting machine frame; A side plate is installed on one side of the top of the cutting platform, a fixed blade holder is installed and connected on the side plate, and a fixed cutting blade is installed and connected on the fixed blade holder; A movable cutting blade is provided on the side of the fixed blade holder away from the side plate; The movable cutting blade is connected to a movable blade holder at one end away from the fixed blade holder. The other end of the movable blade holder passes movably through the movable limiting support and is connected to a movable mechanism. The movable mechanism is used to drive the movable blade holder to move and is used to be installed on the cutting machine frame. The movable limiting support is fixedly installed on the cutting platform by bolts. One end of the fixed tool holder is provided with an adjustment mechanism for adjusting and controlling the movement of the fixed tool holder, and the adjustment mechanism is movably connected to the cutting platform.

2. The automatic rebar cutting machine for crankshaft production according to claim 1, characterized in that, The adjustment mechanism includes an adjustment sliding support; The bottom end of the adjustable sliding support is horizontally slidable with the top end of the cutting platform via an electric sliding guide rail, and the sliding direction of the electric sliding guide rail is perpendicular to the projection of the fixed tool holder. A limiting blind hole is provided at the upper part of the adjustable sliding support and at one end near the fixed knife seat. One end of the cut steel bar is used to move through the limiting blind hole and the end is used to abut against the bottom of the inner wall of the limiting blind hole.

3. The automatic rebar cutting machine for crankshaft production according to claim 2, characterized in that, A first steel bar limiting seat is provided on the side of the fixed blade holder near the adjusting sliding support. The first steel bar limiting seat is used to connect and fix to the top of the cutting platform. The first steel bar limiting seat has a first limiting groove for limiting the steel bar. A second rebar limiting seat is provided on the side of the fixed blade holder away from the adjusting sliding support. The second rebar limiting seat is used to connect and fix to the top of the cutting platform. The second rebar limiting seat has a second limiting groove for limiting the rebar. A second limiting baffle is provided at the top of the second limiting groove. The second limiting baffle is used to connect to the second rebar limiting seat. The rebar is used to move through the second limiting groove, and the second limiting baffle is used to limit the rebar in the second limiting groove.

4. The automatic rebar cutting machine for crankshaft production according to claim 1, characterized in that, The movable mechanism includes a movable hinge block; One end of the movable hinge block is hinged to the movable blade holder via a hinge seat, and the other end of the movable hinge block is connected to the movable rotating shaft via a fixing block. Both ends of the movable rotating shaft are rotatably connected to the movable shaft support via bearings, and the movable shaft support is fixed to the top of the cutting machine frame. A large movable gear is connected to the movable shaft; The movable large gear meshes with a primary transmission pinion, which is positioned below the movable large gear. The primary transmission pinion is used to connect to the primary drive shaft. The two ends of the primary drive shaft are rotatably connected to the primary shaft support through bearings. The primary shaft support is used to fix the cutting machine frame. The primary drive shaft is also connected to a primary drive gear. The primary drive gear meshes with a secondary transmission pinion, which is positioned below the primary drive gear. The secondary transmission pinion is connected to the secondary drive shaft. One end of the secondary drive shaft is rotatably connected to the secondary fixed support via a bearing. The secondary fixed support is used to fix the shaft to the cutting machine frame. The other end of the secondary drive shaft rotatably passes through the secondary limiting support via a bearing, and a connecting pulley is connected to its end. The secondary limiting support is used to fix the shaft to the cutting machine frame. The connecting pulley is used to drive the drive pulley via a belt. The drive pulley is used to connect to the output end of the geared motor. The geared motor is used to connect and fix to the cutting machine frame via a bracket.

5. The automatic rebar cutting machine for crankshaft production according to claim 2, characterized in that, The cutting frame is provided with a conveying and moving mechanism for conveying moving steel bars on the side away from the adjusting sliding support. The conveying and moving mechanism is installed and connected to the conveying platform, and the conveying platform is connected to the cutting frame through a conveying bracket. The conveying and moving mechanism includes a primary conveying traction structure, a secondary conveying traction structure, and a rolling straightening structure; The secondary conveying traction structure is installed on the conveying platform and near one end of the adjusting sliding support; The primary conveying traction structure is installed on the side of the conveying platform that is away from the secondary conveying traction structure. The rolling straightening structure is used to be installed between the primary conveying traction structure and the secondary conveying traction structure.

6. The automatic rebar cutting machine for crankshaft production according to claim 5, characterized in that, The primary conveying and traction structure includes a primary traction base; The primary traction base is used for mounting and connecting to the conveying platform; The primary traction base has a channel; A primary fixing seat is provided below the channel of the primary traction base, and the primary fixing seat is used to connect and fix to the primary traction base. A primary fixed shaft is rotatably mounted on the primary fixed seat via a bearing. One end of the primary fixed shaft is connected to a primary fixed traction wheel. The outer wall of the primary fixed traction wheel is provided with a primary limiting traction groove for limiting the reinforcing bar. A primary connecting gear is connected to the other side of the primary fixed rotating shaft; The first-stage connecting gear is connected to a first-stage connecting pulley at the end away from the first-stage fixed seat. The first-stage connecting pulley is connected to the first-stage drive pulley via a belt. The first-stage drive pulley is connected to the output end of the traction motor. The traction motor is mounted on the conveyor bracket. The first-level fixed traction wheel is provided with first-level traction guide sleeves on both sides for the passage of reinforcing bars. The first-level traction guide sleeves are connected to the first-level traction base through a fixing plate.

7. The automatic rebar cutting machine for crankshaft production according to claim 6, characterized in that, A primary movable seat is provided above the channel of the primary traction base, and the primary movable seat is used to be raised and lowered in relation to the channel of the primary traction base. A primary movable shaft is rotatably mounted on the primary movable seat via a bearing. One end of the primary movable shaft is connected to a primary movable traction wheel. The outer wall of the primary movable traction wheel is provided with a primary limiting traction groove for limiting the reinforcing bar. The other end of the primary movable shaft is connected to a primary drive gear via a shaft connector; The primary drive gear is configured to mesh with the primary connecting gear. A primary movable drive adjustment rod is movably disposed above the primary movable seat. One end of the primary movable drive adjustment rod is rotatably connected to the primary movable seat via a bearing, and the other end of the primary movable drive adjustment rod is threaded through the top of the primary movable seat and connected to an adjustment rotary handwheel.

8. The automatic rebar cutting machine for crankshaft production according to claim 7, characterized in that, The secondary conveying and traction structure includes a secondary traction base; The secondary traction base is used for mounting and connecting to the conveying platform; The secondary traction base has a channel; A secondary fixing seat is provided below the channel of the secondary traction base, and the secondary fixing seat is used to connect and fix to the secondary traction base; A secondary fixed shaft is rotatably mounted on the secondary fixed base via a bearing. One end of the secondary fixed shaft is connected to a secondary fixed traction wheel. The outer wall of the secondary fixed traction wheel is provided with a secondary limiting traction groove for limiting the reinforcing bar. A secondary connecting gear is connected to the other side of the secondary fixed rotating shaft; The end of the secondary connecting gear away from the secondary fixed seat is connected to a secondary connecting pulley. The secondary connecting pulley is connected to the secondary drive pulley via a belt. The secondary drive pulley is connected to the output end of the traction motor. The traction motor is mounted on the conveying bracket. The two sides of the secondary fixed traction wheel are respectively provided with secondary traction guide sleeves for the passage of reinforcing bars. The secondary traction guide sleeves are connected to the secondary traction base through a fixing plate.

9. An automatic rebar cutting machine for crankshaft production according to claim 8, characterized in that, A secondary movable seat is provided above the channel of the secondary traction base, and the secondary movable seat is used to move up and down with the channel of the secondary traction base. The secondary movable seat is rotatably mounted on a secondary movable shaft via a bearing. One end of the secondary movable shaft is connected to a secondary movable traction wheel. The outer wall of the secondary movable traction wheel is provided with a secondary limiting traction groove for limiting the reinforcing bar. The other end of the secondary movable rotating shaft is connected to a secondary drive gear via a shaft connector; The secondary drive gear is configured to mesh with the secondary connecting gear. A secondary movable drive adjustment rod is movably disposed above the secondary movable seat. One end of the secondary movable drive adjustment rod is rotatably connected to the secondary movable seat via a bearing, and the other end of the secondary movable drive adjustment rod is threaded through the top of the secondary movable seat and connected to an adjustment rotary handwheel.

10. An automatic rebar cutting machine for crankshaft production according to claim 9, characterized in that, The rolling straightening structure includes a rolling adjusting sleeve; The rolling adjusting sleeve has a through-hole for the passage of reinforcing bars; The two ends of the rolling adjusting sleeve are respectively connected to rolling shafts. The rolling shafts pass through the rolling fixed support through the bearings. The rolling fixed support is used to connect and fix with the conveying platform. The rolling shafts are respectively provided with passage openings for the passage of steel bars. One of the rolling shafts is connected to a small connecting pulley, which is connected to a large driving pulley via a belt drive. The large driving pulley is used to connect to the output end of a straightening drive motor, which is used to connect and fix to the conveying bracket.

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