Lifting device for metal surface pretreatment line

Abstract

The utility model provides a hoisting and conveying device for a metal surface pretreatment line, and provides the following scheme aiming at the problems that in the working procedure of an existing metal surface pretreatment line, errors possibly occur in the process that metal parts are conveyed to a designated station, so that the outer surfaces of the metal parts face different directions, and follow-up machining treatment is affected. The device comprises a circulating line, a conveying device and a plurality of hoisting and conveying mechanisms, each hoisting and conveying mechanism comprises a hoisting cylinder, a main rod is vertically and slidably mounted in each hoisting cylinder, a regular circular truncated cone is fixedly mounted at the bottom end of each main rod, and a hollow cylinder is fixedly connected to the bottom of each regular circular truncated cone. The ejector rods abut against the surface of the metal part, so that the multiple L-shaped plates are driven to rotate outwards with the circular shaft as the axis, the L-shaped plates eject the hook plates out, the hook plates are separated from the regular circular truncated cone, then the hoisting barrel can move relative to the main rod to straighten the steel wire rope to achieve the grabbing function, and grabbing cannot be conducted when the opening of the metal part faces upwards; and the fool-proof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of hoisting equipment, in particular to a hoisting device for a metal surface pretreatment line. Background Art

[0002] Metal surface pretreatment line usually refers to an automated production line or equipment used for the pretreatment of metal surfaces. There are usually impurities such as oil, dust, rust, etc. on the metal surface. The pretreatment line will remove these impurities through chemical cleaning, mechanical cleaning or heat treatment to ensure a clean surface. Some metals may require surface modification, such as phosphating, passivation, chromating, etc., to enhance the corrosion resistance of the metal surface or add other properties.

[0003] Normally, metal parts such as housings or other parts with complex shapes, including outer and inner surfaces, are hoisted with the surface facing upward during the pretreatment process. This is because one of the purposes of pretreatment is to clean and treat the surface of metal parts to ensure the quality and treatment effect of the surface. Facing the surface upward helps ensure that the cleaning agent or treatment agent can effectively contact the surface of the part, thereby achieving the expected cleaning and treatment effect.

[0004] In the existing metal surface pretreatment line process, a conveyor device usually transports metal parts to a designated workstation, and then a hoisting device grabs the metal parts. Errors may occur when the metal parts are placed on the conveyor device or during the conveying process, causing the outer surface of the metal parts to face different directions, affecting subsequent processing. Therefore, we propose a hoisting device for metal surface pretreatment lines to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to solve the problems raised in the above background technology, and to propose a hoisting device for a metal surface pretreatment line.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A lifting device for a metal surface pretreatment line comprises a circulation line, a conveying device and a plurality of lifting mechanisms, the lifting mechanism comprising a lifting cylinder, a main rod being vertically slidably installed in the lifting cylinder, a right circular table being fixedly installed at the bottom end of the main rod, a hollow cylinder being fixedly connected to the bottom end of the right circular table, a support platform being fixedly connected to the bottom end of the hollow cylinder, a plurality of hook plates being rotatably installed on the outer side of the lifting cylinder, a card slot being provided at the top of the hook plate, a sliding hole being provided at the top of the support platform, a top rod being vertically slidably installed in the sliding hole, a plurality of through holes being provided on the inner wall of the hollow cylinder, an L-shaped plate being rotatably installed in the through hole, and the top of the top rod being movably abutted against the bottom of the L-shaped plate.

[0008] Preferably, a plurality of support sleeves are fixedly installed on the outer side of the support platform, and the same fixed shaft is fixedly installed between the inner walls of both sides of the support sleeve. The outer rotating sleeve of the fixed shaft is provided with a grab plate, and a steel wire rope is rotatably installed on one end of the grab plate, and one end of the steel wire rope is rotatably connected to the outer side of the lifting barrel.

[0009] Preferably, a notch is provided on the top of the grab plate, and a plurality of first fixing seats are fixedly installed on the upper outer side of the lifting cylinder, and a lower rotating block and an upper rotating block are rotatably installed in the notch and the first fixing seats respectively, and the two ends of the wire rope are fixedly connected to the corresponding lower rotating block and upper rotating block respectively, and a plurality of second fixing seats are fixedly installed on the lower outer side of the lifting cylinder, and the hook plate is rotatably installed on the corresponding second fixing seats.

[0010] Preferably, the bottom of the right circular table is movably clamped in a plurality of slots, the L-shaped plate cooperates with the corresponding hook plate, the same circular shaft is fixedly installed between the inner walls on both sides of the through hole, and the L-shaped plate is rotatably sleeved on the outside of the corresponding circular shaft.

[0011] Preferably, the front and rear sides of the L-shaped plate are provided with internal grooves, and the same return spring is fixedly installed between the inner wall of one side of the internal groove and the inner wall of one side of the corresponding through hole. A guide groove is provided on the inner wall of the lifting tube, and a guide plate is fixedly installed on the outer side of the main rod, and the guide plate is slidably installed in the corresponding guide groove.

[0012] Preferably, a plurality of moving blocks are provided on the circulation line, a lifting mechanism is provided at the bottom of the moving block, a hanging ring is fixedly installed on the top of the lifting cylinder, the lifting mechanism is connected to the corresponding hanging ring through a hook, and the conveying device is provided directly below the circulation line, and guardrails are fixedly installed on the front and rear sides of the conveying device.

[0013] Preferably, it further comprises a plurality of collecting frames, and the collecting frames are adapted to the lifting mechanism.

[0014] The beneficial effects of the utility model are:

[0015] By abutting the surface of the metal part with the push rod, multiple L-shaped plates are driven to rotate outward with the circular axis as the axis. The L-shaped plate pushes out the hook plate, so that the hook plate is separated from the circular table, and then the lifting cylinder can be displaced relative to the main rod to straighten the wire rope to realize the grabbing function. When the opening of the metal part is facing upward, it cannot be grabbed, which plays a fool-proof role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a lifting device for a metal surface pretreatment line proposed by the present invention;

[0017] Figure 2This is a schematic cross-sectional view of a lifting device for a metal surface pretreatment line proposed by the present invention;

[0018] Figure 3 for Figure 2 A partial enlarged view of part A;

[0019] Figure 4 This is a transformation diagram of a lifting device for a metal surface pretreatment line proposed by the present invention;

[0020] Figure 5 This is a schematic structural diagram of a circulation line of a hoisting device for a metal surface pretreatment line proposed by the present invention;

[0021] Figure 6 This is a structural schematic diagram of a collection frame of a hoisting device for a metal surface pretreatment line proposed by the utility model.

[0022] The reference numerals are as follows:

[0023] In the figure: 1. Circular line; 101. Moving block; 102. Lifting mechanism; 2. Conveying device; 3. Hoisting mechanism; 301. Hoisting cylinder; 302. Main rod; 303. Support platform; 304. Support sleeve; 305. Grab plate; 306. Wire rope; 307. Hook plate; 308. Round table; 309. Hollow cylinder; 310. Lower rotating block; 311. Upper rotating block; 312. First fixed seat; 313. Second fixed seat; 314. Push rod; 315. L-shaped plate; 316. Hanging ring; 317. Slot; 318. Guide groove; 319. Guide plate; 320. Collection frame; 321. Return spring; 322. Guardrail. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-6A lifting device for a metal surface pretreatment line includes a circulation line 1, a conveying device 2 and multiple lifting mechanisms 3. The lifting mechanism 3 includes a lifting cylinder 301, a main rod 302 is vertically slidably installed in the lifting cylinder 301, a right circular table 308 is fixedly installed at the bottom end of the main rod 302, a hollow cylinder 309 is fixedly connected to the bottom of the right circular table 308, and a support platform 303 is fixedly connected to the bottom end of the hollow cylinder 309. A plurality of hook plates 307 are rotatably installed on the outer side of the lifting cylinder 301, a card slot 317 is provided on the top of the hook plate 307, a sliding hole is provided on the top of the support platform 303, a top rod 314 is vertically slidably installed in the sliding hole, a plurality of through holes are provided on the inner wall of the hollow cylinder 309, an L-shaped plate 315 is rotatably provided in the through hole, and the top of the top rod 314 is movably abutted against the bottom of the L-shaped plate 315.

[0026] like Figure 2 and Figure 3 As shown, multiple support sleeves 304 are fixedly installed on the outside of the support platform 303, and the same fixed shaft is fixedly installed between the inner walls on both sides of the support sleeve 304. The outer rotating sleeve of the fixed shaft is provided with a grab plate 305, and one end of the grab plate 305 is rotatably installed with a wire rope 306, and one end of the wire rope 306 is rotatably connected to the outer side of the lifting cylinder 301.

[0027] like Figure 1 and Figure 2 As shown, a notch is provided on the top of the grab plate 305, and a plurality of first fixed seats 312 are fixedly installed on the upper outer side of the lifting cylinder 301, and a lower rotating block 310 and an upper rotating block 311 are rotatably installed in the notch and the first fixed seat 312 respectively, and the two ends of the wire rope 306 are fixedly connected to the corresponding lower rotating block 310 and upper rotating block 311 respectively, and a plurality of second fixed seats 313 are fixedly installed on the lower outer side of the lifting cylinder 301, and the hook plate 307 is rotatably installed on the corresponding second fixed seat 313, which plays a role of rotational support for the grab plate 305 and the hook plate 307, and the lower rotating block 310 and the upper rotating block 311 make the straightening process of the wire rope 306 smoother.

[0028] like Figure 2 and Figure 3 As shown, the bottom of the right circular table 308 is movably engaged in a plurality of slots 317, the L-shaped plate 315 cooperates with the corresponding hook plate 307, and the same circular shaft is fixedly installed between the inner walls on both sides of the through hole, and the L-shaped plate 315 is rotatably sleeved on the outside of the corresponding circular shaft.

[0029] The L-shaped plate 315 is provided with an internal groove on both the front and rear sides. A same return spring 321 is fixedly installed between the inner wall of one side of the internal groove and the inner wall of one side of the corresponding through hole. A guide groove 318 is provided on the inner wall of the lifting tube 301. A guide plate 319 is fixedly installed on the outer side of the main rod 302, and the guide plate 319 is slidably installed in the corresponding guide groove 318.

[0030] It should be noted that the push rod 314 moves upward relative to the hollow cylinder 309, driving multiple L-shaped plates 315 to rotate outward with the circular axis as the axis. The L-shaped plate 315 pushes out the hook plate 307, thereby driving the hook plate 307 to swing upward, realizing the separation function of the hook plate 307 and the right circular table 308.

[0031] It is further explained that the L-shaped plate 315 is reset by the setting of the reset spring 321, and the main rod 302 is restricted from rotating by the cooperation of the guide plate 319 and the guide groove 318, thereby preventing the L-shaped plate 315 and the hook plate 307 from being misaligned, resulting in the L-shaped plate 315 being unable to push out the hook plate 307.

[0032] like Figure 5 As shown, a plurality of moving blocks 101 are provided on the circulation line 1, a lifting mechanism 102 is provided at the bottom of the moving block 101, a hanging ring 316 is fixedly installed on the top of the lifting tube 301, and the lifting mechanism 102 is connected to the corresponding hanging ring 316 through a hook. The conveying device 2 is provided directly below the circulation line 1, and guardrails 322 are fixedly installed on the front and rear sides of the conveying device 2.

[0033] like Figure 6 As shown, a plurality of collecting frames 320 are also included, and the collecting frames 320 are adapted to the lifting mechanism 3 .

[0034] It should be noted that when unloading metal parts, the circulation line 1 drives the lifting mechanism 3 to move to the top of the collection frame 320, and the lifting mechanism 102 drives the lifting mechanism 3 to move downward until the multiple support sleeves 304 abut against the top of the collection frame 320. The lifting mechanism 102 continues to drive the lifting barrel 301 downward through the lifting ring, and the wire rope 306 gradually relaxes. The grab plate 305 swings downward under the action of gravity and separates from the metal parts. The metal parts fall into the collection frame 320, and the L-shaped plate 315 is reset under the action of the reset spring 321. The hook plate 307 swings downward under the action of gravity until it abuts against the right circular table 308. After that, the lifting mechanism 102 drives the lifting barrel 301 upward through the lifting ring. During the upward movement of the hook plate 307, the card slot 317 is re-engaged with the right circular table 308.

[0035] The working principle of the present invention is as follows: a plurality of metal parts are conveyed to the bottom of the circulation line 1 by the conveying device 2, a plurality of metal parts are arranged at intervals on the conveying device 2, the hoisting mechanism 3 is transported to the top of the metal parts by the circulation line 1, and the hoisting mechanism 3 is driven downward by the lifting mechanism 102. The distance that the lifting mechanism 102 drives the hoisting mechanism 3 to move downward is fixed. When the opening of the metal part is facing downward, as shown in the accompanying drawings of the specification, Figure 4As shown in the middle a station, during the downward movement of the lifting mechanism 3, the bottom end of the push rod 314 first abuts against the outer surface of the metal part. At this time, the support sleeve 304 is located above the guardrail 322 and the distance between it and the guardrail 322 is small, thereby driving the push rod 314 to move upward relative to the hollow cylinder 309, thereby driving multiple L-shaped plates 315 to rotate outward with the circular axis as the axis. The L-shaped plate 315 pushes out the hook plate 307, thereby driving the hook plate 307 to swing upward and separate from the right circular table 308. The two support sleeves 304 in the lifting mechanism 3 fall on the guardrail 322 under the action of gravity. At this time, the metal part is between the multiple grab plates 305 in the lifting mechanism 3, and then as shown in the figure of the specification. Figure 4 As shown in the middle b station, the lifting mechanism 102 drives the hoisting mechanism 3 to move upward, and the lifting mechanism 102 drives the hoisting tube 301 to move upward through the lifting ring until the multiple steel ropes 306 are straightened, thereby driving the multiple grab plates 305 to swing toward the side close to the metal part with the fixed axis as the axis, until the multiple grab plates 305 abut against the outside of the metal part, realizing the grabbing function of the metal part, and then the circulating line 1 drives the moving block 101 and the lifting mechanism 3 to move to the next station for subsequent processing. When the opening of the metal part is facing upward, the bottom end of the push rod 314 extends into the metal part, and the hook plate 307 cannot be separated from the round table 308, which makes the lifting mechanism 3 unable to grab the metal part, thereby playing an anti-fool function.

[0036] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A hoisting device for a metal surface pretreatment line, comprising a circulation line (1), a conveying device (2) and a plurality of hoisting mechanisms (3), characterized in that: The hoisting mechanism (3) includes a hoisting cylinder (301), a main rod (302) is vertically slidably installed in the hoisting cylinder (301), a right circular table (308) is fixedly installed at the bottom end of the main rod (302), a hollow cylinder (309) is fixedly connected to the bottom of the right circular table (308), and a support platform (303) is fixedly connected to the bottom end of the hollow cylinder (309), a plurality of hook plates (307) are rotatably installed on the outer side of the hoisting cylinder (301), a slot (317) is provided at the top of the hook plate (307), a sliding hole is provided at the top of the support platform (303), a top rod (314) is vertically slidably installed in the sliding hole, a plurality of through holes are provided on the inner wall of the hollow cylinder (309), an L-shaped plate (315) is rotatably installed in the through hole, and the top of the top rod (314) is movably abutted against the bottom of the L-shaped plate (315).

2. A hoisting device for a metal surface pretreatment line according to claim 1, characterized in that: A plurality of support sleeves (304) are fixedly installed on the outer side of the support platform (303), and a same fixed shaft is fixedly installed between the inner walls of both sides of the support sleeve (304). A grab plate (305) is provided on the outer rotating sleeve of the fixed shaft, and a steel wire rope (306) is rotatably installed on one end of the grab plate (305), and one end of the steel wire rope (306) is rotatably connected to the outer side of the lifting cylinder (301).

3. A hoisting device for a metal surface pretreatment line according to claim 2, characterized in that: A notch is provided at the top of the grab plate (305), and a plurality of first fixing seats (312) are fixedly installed on the upper outer side of the hoisting cylinder (301). A lower rotating block (310) and an upper rotating block (311) are rotatably installed in the notch and the first fixing seats (312), respectively. The two ends of the steel wire rope (306) are fixedly connected to the corresponding lower rotating block (310) and upper rotating block (311), respectively. A plurality of second fixing seats (313) are fixedly installed on the lower outer side of the hoisting cylinder (301), and the hook plate (307) is rotatably installed on the corresponding second fixing seats (313).

4. The hoisting device for a metal surface pretreatment line according to claim 1, characterized in that: The bottom of the right circular table (308) is movably engaged in a plurality of slots (317), the L-shaped plate (315) cooperates with the corresponding hook plate (307), a same circular shaft is fixedly installed between the inner walls of both sides of the through hole, and the L-shaped plate (315) is rotatably sleeved on the outer side of the corresponding circular shaft.

5. The hoisting device for a metal surface pretreatment line according to claim 1, characterized in that: The front and rear sides of the L-shaped plate (315) are both provided with internal grooves, and a same return spring (321) is fixedly installed between the inner wall of one side of the internal groove and the inner wall of one side of the corresponding through hole. A guide groove (318) is provided on the inner wall of the hanging tube (301), and a guide plate (319) is fixedly installed on the outer side of the main rod (302), and the guide plate (319) is slidably installed in the corresponding guide groove (318).

6. A hoisting device for a metal surface pretreatment line according to claim 1, characterized in that: The circulation line (1) is provided with a plurality of moving blocks (101), the bottom of the moving block (101) is provided with a lifting mechanism (102), the top of the hoisting cylinder (301) is fixedly provided with a hanging ring (316), the lifting mechanism (102) is connected to the corresponding hanging ring (316) through a hook, the conveying device (2) is provided directly below the circulation line (1), and guardrails (322) are fixedly provided on both the front and rear sides of the conveying device (2).

7. The hoisting device for a metal surface pretreatment line according to claim 1, characterized in that: It also includes a plurality of collecting frames (320), wherein the collecting frames (320) are adapted to the hoisting mechanism (3).

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