End cut recovery machine

Abstract

The utility model relates to sheet metal part machining technical field, specifically disclose a kind of end cutting recovery machine, including workbench and end cutting recovery mechanism, the end cutting recovery mechanism includes recovery upper die, recovery lower die and cutter, the recovery lower die is located the upper end of workbench, the length of recovery lower die is adjustable and both ends are equipped with lower cutter, the both sides of workbench are connected with top plate by support plate, the upper end of top plate is equipped with oil cylinder, the piston rod of oil cylinder is connected with pressure block, the upper end of pressure block is connected with the first guide rod that penetrates top plate, pressure block is connected with the recovery upper die that is matched with recovery lower die by pressing plate, the both ends of recovery upper die are connected with upper cutter, and the distance of upper cutter is adjustable and is staggered shearing cooperation with lower cutter;The utility model can be end cut to workpiece both ends at a time, improve processing efficiency;Through the clamping positioning of workpiece of cooperation of front and rear positioning block, improve end cutting and recovery precision, reduce the scrap rate, ensure product quality, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, specifically to an end-cutting restoration machine. Background Technology

[0002] In the automated manufacturing of steel wheel hubs (rims), weld treatment is a crucial step in ensuring the roundness and end-face accuracy of the product. Traditional processes typically employ a step-by-step approach: first, slag is removed at a slag-removing station, followed by end-cutting (removing excess edges and corners at both ends of the weld) and recirculation (correcting welding deformation). While this step-by-step operation can basically meet the requirements, it suffers from low processing efficiency. Patent CN203917587U discloses a recirculation and end-cutting combined device, including a lower die with a convex arc surface, an upper die with a concave arc surface, a punch shear located at one end of the upper die, and a fixed lower shear on the lower die. This device controls the recirculation action of the upper die through a main drive device, while an auxiliary drive device delays the punch shear to complete the end-cutting, achieving the completion of recirculation and end-cutting in the same process, reducing station changeover time, and avoiding multiple positioning errors.

[0003] However, this existing technology still has significant limitations: 1. Processing efficiency needs improvement: This device can only remove the weld slag from one end of the workpiece at a time, requiring secondary processing to complete the removal of welds from both ends, resulting in low efficiency.

[0004] 2. Limited positioning accuracy: Relying on a single tube centering device for workpiece positioning lacks a dynamic adjustment mechanism. During end-cutting, the workpiece is prone to slight displacement due to punching and shearing reaction forces, resulting in uneven cuts or roundness deviations. Utility Model Content

[0005] This invention addresses the aforementioned shortcomings of existing technologies by providing an end-cutting and restoring machine. This invention improves the processing efficiency and accuracy of end-cutting and restoring of workpieces, ensuring product quality. To achieve the above objectives, this utility model provides the following technical solution: An end-cutting recovery machine includes a worktable and an end-cutting recovery mechanism. The lower end of the worktable is provided with a base. The end-cutting recovery mechanism includes an upper recovery die, a lower recovery die, and cutters. The lower recovery die is located at the upper end of the worktable. The length of the lower recovery die is adjustable and both ends are provided with lower cutters. The two sides of the worktable are connected to a top plate through a support plate. A hydraulic cylinder is provided at the upper end of the top plate. A pressure block is connected to the piston rod of the hydraulic cylinder. The upper end of the pressure block is connected to a first guide rod that penetrates the top plate. The pressure block is connected to the upper recovery die, which cooperates with the lower recovery die, through a pressure plate. Both ends of the upper recovery die are connected to upper cutters with adjustable spacing that cooperate with the lower cutters in an alternating shearing action.

[0006] Preferably, the lower die for circular motion includes a front section fixed to the worktable, a middle section detachable from the worktable, and a rear section slidingly engaged with the worktable. The middle sections are located between the front and rear sections and there are multiple middle sections. Preferably, the upper end of the worktable is provided with a positioning mechanism for adjusting the rear section of the lower mold. The positioning mechanism includes a hand-cranked screw jack fixed to the worktable, a second cylinder, and a lower moving seat. The worktable is provided with a lower guide rail. The lower end of the second cylinder is provided with a push seat. The push seat and the lower moving seat are both connected to the lower guide rail through the guide rail. The piston rod of the cylinder is connected to the lower moving seat. The rear section of the lower mold is fixed to the upper end of the lower moving seat.

[0007] Preferably, the bottom of the pressure block is provided with an upper guide rail, one end of which is connected to a first cutter bar. The pressure plate is provided with a guide block, the first cutter bar passes through the guide block and is slidably engaged. The upper end of the lower moving seat is connected to a push block, the push block is provided with a guide hole. The upper moving seat is connected to the upper guide rail via a slider. The lower end of the upper moving seat is connected to a second guide rod that engages with the guide hole and a second cutter bar that passes through the push block. The lower ends of the first cutter bar and the second cutter bar are both provided with upper cutting blades. The two ends of the compound round upper mold are respectively provided with a first clearance hole that engages with the first cutter bar and a second clearance hole that engages with the second cutter bar. Preferably, the lower movable seat has a rear positioning block for positioning the workpiece on its side wall, and a front positioning block is provided on one side of the front section of the lower mold.

[0008] Preferably, the workbench is equipped with a first cylinder, a support plate is connected to the piston rod of the first cylinder, a push rod is connected to the support plate and passes through the upper end of the workbench, and the front positioning block is connected to the push rod.

[0009] Preferably, the upper end of the circular upper mold is connected to the pressure plate via a guide post and a nitrogen spring, and the guide post and the pressure plate are in sliding fit.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. Improved adaptability and efficiency across multiple specifications: The length of the lower die for recirculation is adjusted through a positioning mechanism to match the width of the workpiece. Both ends of the die are equipped with cutters, enabling end-cutting of both ends of the workpiece in one operation, thus improving processing efficiency. 2. Enhanced positioning accuracy: The coordinated use of front and rear positioning blocks ensures the clamping and positioning of the workpiece, guaranteeing loading accuracy. Furthermore, it prevents workpiece movement during end-cutting and recirculation, improving end-cutting and recirculation accuracy and reducing scrap rate. This invention improves the processing efficiency and accuracy of workpiece end-cutting and recirculation, ensuring product quality and reducing production costs.

[0011] 2. The number of lower mold interruptors of this utility model can be selected according to the width of the workpiece, making it flexible in use and ensuring effective support for the bottom of the workpiece, thus guaranteeing the rounding effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model after removing the single-sided support plate; Figure 3 This is a schematic diagram of the internal structure of the present invention after the base has been removed; Figure 4 for Figure 3 A sectional view; Figure 5 for Figure 3 Enlarged cross-sectional view at point A; Figure 6 for Figure 4 Enlarged view of point B; In the diagram: 1-Base; 2-Workbench; 201-Support plate; 202-Top plate; 203-Front positioning block; 204-Push rod; 205-First cylinder; 206-Support plate; 207-Lower guide rail; 3-End cutting and recirculation mechanism; 301-Oil cylinder; 302-First guide rod; 303-Pressure block; 304-First cutter bar; 305-Guide block; 306-Upper cutter; 307-Nitrogen spring; 308-Recirculation upper die; 309-Lower die front section; 3 10-Lower mold middle section; 311-Lower mold rear section; 312-Rear positioning block; 313-Second tool holder; 314-Upper guide rail; 315-Pressure plate; 316-Guide post; 317-Second clearance hole; 318-First clearance hole; 4-Positioning mechanism; 401-Upper moving seat; 402-Second guide rod; 403-Push block; 404-Lower moving seat; 405-Second cylinder; 406-Hand-cranked screw jack; 407-Push seat; 408-Guide hole. Detailed Implementation The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1 , Figure 2As shown, an end-cutting and reshaping machine includes a worktable 2 and an end-cutting and reshaping mechanism 3. The lower end of the worktable 2 is provided with a base 1. The end-cutting and reshaping mechanism 3 includes an upper reshaping die 308, a lower reshaping die, and a cutter. The lower reshaping die is located at the upper end of the worktable 2. The length of the lower reshaping die is adjustable and both ends are provided with lower cutters. The length of the upper reshaping die 308 is the same as the maximum length of the lower reshaping die. The two sides of the worktable 2 are connected to a top plate 202 through a support plate. The upper end of the top plate 202 is provided with a hydraulic cylinder 301. A pressure block 303 is connected to the piston rod of the hydraulic cylinder 301. The upper end of the pressure block 303 is connected to a first guide rod 302 that penetrates the top plate 202 to guide the vertical movement of the pressure block 303. The pressure block 303 is connected to the upper reshaping die 308, which cooperates with the lower reshaping die, through a pressure plate 315. The two ends of the upper reshaping die 308 are connected to upper cutters 306 with adjustable spacing that cooperate with the lower cutters in an alternating shearing manner.

[0014] Among them, the lower end face of the upper die 308 is a concave outer arc structure, and the upper end face of the lower die is a convex arc mechanism. The lower end face of the upper die 308 and the upper end face of the lower die cooperate to recirculate the workpiece.

[0015] like Figure 3 , Figure 5 As shown, the upper end of the compound die is connected to the pressure plate 315 via a guide post 316 and a nitrogen spring 307. A guide sleeve is provided inside the pressure plate 315. The guide post 316 and the guide sleeve are in sliding fit. A limit sleeve is provided at the upper end of the guide post 316. The nitrogen spring 307 is used to provide unloading force.

[0016] The lower die for recirculation includes a front section 309 fixed to the worktable 2, a middle section 310 detachable from the worktable 2, and a rear section 311 slidably engaged with the worktable 2. The middle sections 310 are located between the front section 309 and the rear section 311 and there are multiple middle sections 310. The distance between the front section 309 and the rear section 311 and the number of middle sections 310 used are adjusted according to the width of the workpiece. The upper end of the worktable 2 is provided with a positioning mechanism 4 for adjusting the rear section 311 of the lower mold. The positioning mechanism 4 includes a hand-cranked screw jack 406, a second cylinder 405, and a lower moving seat 404 fixed to the worktable 2. Figure 4 As shown, the worktable 2 is provided with a lower guide rail 207, and the lower end of the second cylinder 405 is provided with a push seat 407. The push seat 407 and the lower moving seat 404 are both connected to the lower guide rail 207 through the guide rail. The piston rod of the cylinder is connected to the lower moving seat 404, and the lower mold rear section 311 is fixed to the upper end of the lower moving seat 404.

[0017] The bottom of the pressure block 303 is provided with an upper guide rail 314, one end of which is connected to a first cutter bar 304. A guide block 305 is provided on the pressure plate 315. The first cutter bar 304 passes through the guide block 305 and slides in engagement. The upper end of the lower moving seat 404 is connected to a push block 403. Figure 4 As shown, the push block 403 is provided with a guide hole 408. The upper guide rail 314 is connected to the upper moving seat 401 by a slider. The lower end of the upper moving seat 401 is connected to the second guide rod 402 that cooperates with the guide hole 408 and the second cutter bar 313 that penetrates the push block 403. The lower ends of the first cutter bar 304 and the second cutter bar 313 are both provided with upper cutting blades 306. The two ends of the compound round upper mold 308 are respectively provided with a first clearance hole 318 that cooperates with the first cutter bar 304 and a second clearance hole 317 that cooperates with the second cutter bar 313. The lower moving seat 404 has a rear positioning block 312 for positioning the workpiece on its side wall, and a front positioning block 203 is provided on one side of the lower mold front section 309.

[0018] The push seat 407 is moved by the hand-cranked screw jack 406. The push seat 407 moves the lower moving seat 404 through the second cylinder 405, thereby adjusting the position of the rear section 311 of the lower die. Generally, the distance between the farthest end of the rear section 311 of the lower die and the front section 309 of the lower die is slightly greater than (0.5cm-1cm) the width of the workpiece. After the workpiece is placed on the round lower die, the second cylinder 405 is activated, pushing the lower moving seat 404 to move, so that the rear positioning block 312 presses against the end of the workpiece. Under the action of the rear positioning block 312 and the front positioning block 203, the workpiece is clamped and positioned.

[0019] like Figure 4 , Figure 6 As shown, to facilitate loading and unloading, a first cylinder 205 is provided in the worktable 2. A support plate 206 is connected to the piston rod of the first cylinder 205. A push rod 204 that passes through the upper end of the worktable 2 is connected to the support plate 206. The front positioning block 203 is connected to the push rod 204. During loading and unloading, the first cylinder 205 drives the front positioning block 203 to descend, so that the height of the front positioning block 203 exceeds the upper end face of the lower die. After loading is completed, the first cylinder 205 drives the front positioning block 203 to rise and position the workpiece.

[0020] Basic workflow: First, adjust the position of the lower die rear section 311 according to the workpiece width. Then, lower the front positioning block 203 to place the workpiece inside the lower die for rounding. The front positioning block 203 rises, and the second cylinder 405 starts to push the lower moving seat 404. The rear positioning block 312 and the front positioning block 203 clamp and position the workpiece. The hydraulic cylinder 301 starts, driving the upper die for rounding 308 to descend and press the workpiece for rounding. At the same time, the upper cutting blade 306 presses down to cut the weld slag, burrs, etc. at both ends of the workpiece, achieving end cutting. Finally, the hydraulic cylinder 301 drives the upper die for rounding 308 and the upper cutting blade 306 to rise, and the front positioning block 203 descends and is lower than the lower die for rounding, allowing the workpiece to be removed.

[0021] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An end-cutting and recirculating machine, comprising a worktable and an end-cutting and recirculating mechanism, wherein the lower end of the worktable is provided with a base, and the end-cutting and recirculating mechanism comprises an upper recirculating die, a lower recirculating die, and a cutter, characterized in that: The lower die is located at the top of the worktable. The length of the lower die is adjustable and both ends are equipped with lower cutters. The two sides of the worktable are connected to a top plate via a support plate. A hydraulic cylinder is located at the top of the top plate. A pressure block is connected to the piston rod of the hydraulic cylinder. A first guide rod penetrating the top plate is connected to the upper end of the pressure block. The pressure block is connected to an upper die that cooperates with the lower die via a pressure plate. Both ends of the upper die are connected to upper cutters with adjustable spacing that cooperate with the lower cutters in an alternating shearing manner.

2. The end-cutting restoration machine as described in claim 1, characterized in that: The lower die for circular motion includes a front section fixed to the worktable, a middle section detachable from the worktable, and a rear section slidingly engaged with the worktable. The middle sections are located between the front and rear sections and there are multiple middle sections.

3. The end-cutting restoration machine as described in claim 2, characterized in that: The upper end of the worktable is provided with a positioning mechanism for adjusting the rear section of the lower mold. The positioning mechanism includes a hand-cranked screw jack fixed to the worktable, a second cylinder, and a lower moving seat. The worktable is provided with a lower guide rail. The lower end of the second cylinder is provided with a push seat. The push seat and the lower moving seat are both connected to the lower guide rail through the guide rail. The piston rod of the cylinder is connected to the lower moving seat. The rear section of the lower mold is fixed to the upper end of the lower moving seat.

4. The end-cutting recovery machine as described in claim 3, characterized in that: The bottom of the pressure block is provided with an upper guide rail, one end of which is connected to a first cutter bar. The pressure plate is provided with a guide block, the first cutter bar passes through the guide block and is slidably engaged. The upper end of the lower moving seat is connected to a push block, the push block is provided with a guide hole. The upper moving seat is connected to the upper guide rail via a slider. The lower end of the upper moving seat is connected to a second guide rod that engages with the guide hole and a second cutter bar that passes through the push block. The lower ends of the first cutter bar and the second cutter bar are both provided with upper cutting blades. The two ends of the compound round upper mold are respectively provided with a first clearance hole that engages with the first cutter bar and a second clearance hole that engages with the second cutter bar.

5. The end-cutting restoration machine as described in claim 3, characterized in that: The lower movable seat has a rear positioning block for positioning the workpiece on its side wall, and a front positioning block is provided on one side of the front section of the lower mold.

6. The end-cutting restoration machine as described in claim 5, characterized in that: The workbench is equipped with a first cylinder, and a support plate is connected to the piston rod of the first cylinder. A push rod is connected to the support plate, which passes through the upper end of the workbench. The front positioning block is connected to the push rod.

7. The end-cutting restoration machine as described in claim 1, characterized in that: The upper end of the circular upper mold is connected to the pressure plate via a guide post and a nitrogen spring, and the guide post and the pressure plate are in sliding fit.

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