Extensible skid for automobile bumper coating line

Abstract

The utility model discloses an extendable skid for an automobile bumper coating line, which comprises a lifting support assembly, a skid conveying chain, a skid support assembly, a telescopic transmission mechanism and a bumper tool assembly, the telescopic transmission mechanism is arranged on the inner side of the skid support assembly, the bumper tool assembly is arranged on the outer side of the skid support assembly, and the telescopic transmission mechanism is arranged on the outer side of the bumper tool assembly. A lifting support assembly is arranged at the bottom of the inner side of the skid support assembly, the skid support assembly is arranged at the top of the skid conveying chain, and a lifting guide rail is fixedly connected to the middle of the top end of the skid conveying chain. According to the utility model, the utilization rate and the conveying stability of the storage space of the bumper can be improved, the stress uniformity is good, and the integrated process flow of feeding, spraying, leveling, conveying and storage can be conveniently realized on a bumper coating line; the problems that an existing bumper spraying skid telescopic mechanism is uneven in stress, the stability of the telescopic action cannot be guaranteed, and the existing bumper spraying skid can be stuck possibly can be effectively solved. And a pure mechanical structure is adopted, and the spraying protection difficulty and the power supply difficulty are not increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts processing equipment, and in particular relates to an extendable sliding sled for an automobile bumper coating line. Background Art

[0002] The ground conveying systems used in the coating industry mainly include ground drag chains, ground friction conveying systems and ground sled conveying systems. Among them, the ground sled conveying system is widely used in the automobile manufacturing industry due to its high reliability, small workpiece transfer turning radius, convenient laying and good flexibility. Automobile bumper spraying is one of the key links in the production and manufacturing of automobile parts. The light sled used on the bumper coating line is a key tooling for carrying the bumper to complete pre-spraying treatment, drying, spraying, leveling, drying online inspection and warehousing in the entire production process.

[0003] However, most of the sleds used on the market are rectangular frame structures, which are used to hang car bumpers and are transported to various workstations by a ground sled conveyor system to complete specific processes. In order to allow the spraying robot to complete the bumper spraying in all directions, the bumpers are placed on the sled at a large distance, which will inevitably cause a waste of sled space and is not conducive to operational storage. Utility Model Content

[0004] Purpose of the invention: In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an extendable skid for an automobile bumper painting line, which improves the utilization rate of the bumper storage space and improves the transportation stability.

[0005] Technical solution: The utility model discloses an extendable sled for automobile bumper painting line, comprising a lifting bracket assembly, a sled conveyor chain, a sled bracket assembly, a telescopic transmission mechanism and a bumper tooling assembly. The inner side of the sled bracket assembly is provided with a telescopic transmission mechanism, the outer side of the sled bracket assembly is provided with a bumper tooling assembly, the bottom of the inner side of the sled bracket assembly is provided with a lifting bracket assembly, the sled bracket assembly is provided at the top of the sled conveyor chain, and a lifting guide rail is fixedly connected to the middle of the top end of the sled conveyor chain.

[0006] Furthermore, the lifting bracket assembly includes a lifting longitudinal beam, a roller bracket, a lifting roller, a fixed angle piece and a lifting cross beam, the two sides of the lifting cross beam are respectively fixedly connected to the inner sides of the lifting longitudinal beams on both sides, the roller bracket is fixedly connected to the bottom end of the middle lifting cross beam, the lifting roller is movably connected to the inner side of the roller bracket, the bottom of the lifting roller is movably connected to the top of the lifting guide rail, and the fixed angle piece is fixedly connected to the connection angle between the lifting longitudinal beam, the roller bracket and the lifting cross beam. The lifting cross beams are arranged equidistantly. Preferably, two groups of lifting longitudinal beams are provided, and three groups of lifting cross beams are provided.

[0007] Furthermore, the sled support assembly includes a driving rail, a support base, a connecting mounting groove, a sled column, a sled crossbeam, and a primary telescopic rod. The support base is fixedly connected to the bottom of the sled column, the two ends of the sled crossbeam are fixedly connected to the inner side of the same transversely arranged sled column, and the primary telescopic rod is movably connected to the inner cavity of the sled column and penetrates to the outer side of the top of the sled column. The sled columns are arranged in a rectangular shape with four corners. Preferably, four sled columns are arranged.

[0008] Furthermore, the sled bracket assembly also includes a top guide rail and a secondary telescopic rod. The secondary telescopic rod is movably connected to the inner side of the primary telescopic rod. The connecting mounting grooves are respectively fixedly connected to the outer sides of the sled column, the primary telescopic rod and the secondary telescopic rod. The driving guide rail is fixedly connected to the bottom of the inner side of the sled column, and the top guide rail is fixedly connected to the bottom of the outer side of the secondary telescopic rod.

[0009] Furthermore, the sled bracket assembly also includes a pad block, a top slider, an intermediate slider and an intermediate guide rail, the pad block is fixedly connected to the top end of the inner side of the first-level telescopic rod, the top slider is fixedly connected to the inner side of the pad block, the top slider is movably sleeved on the surface of the top guide rail, the intermediate slider is fixedly connected to the bottom end of the outer side of the first-level telescopic rod, the intermediate guide rail is fixedly connected to the top end of the inner cavity of the sled column, and the intermediate slider is movably sleeved on the surface of the intermediate guide rail.

[0010] Furthermore, the telescopic transmission mechanism includes a slider fixing block, a driving slider, a driving connecting rod, a bent rod and a push rod, one end of the slider fixing block is fixedly connected to the outer side of the lifting longitudinal beam, one side of the driving slider is fixedly connected to the other end of the slider fixing block, the other side of the driving slider is movably sleeved on the surface of the driving guide rail, one end of the driving connecting rod is hinged to the inner side of the driving slider, the other end of the driving connecting rod is hinged to the center point of the bent rod, one end of the bent rod is hinged to the slide column, the other end of the bent rod is hinged to one end of the push rod, and the other end of the push rod is hinged to the secondary telescopic rod.

[0011] Furthermore, the bumper tooling assembly includes a suspension frame, a bumper body and a connecting positioning block. One end of the suspension frame is fixedly inserted into the inner cavity of the connecting mounting groove. Three groups of connecting positioning blocks are provided. The connecting positioning blocks are evenly and equidistantly fixedly installed on the other end of the suspension frame. The inner side of the bumper body is fixedly installed on the outer side of the connecting positioning block.

[0012] Working principle: When the device moves to a position where there is no lifting rail at the top of the sled conveyor chain, the telescopic transmission mechanism is in a retracted state as shown in the figure under the action of gravity. At this time, the placement spacing of each bumper body in the device is the smallest, that is, it is in a retracted state during circulation and storage, ensuring the stability of transportation and improving the utilization rate of storage space. When the device moves to the position of the lifting rail, the lifting roller is lifted up by the setting of the lifting rail to move upward, and the lifting longitudinal beam is driven to move upward by the upward movement of the lifting roller, and the slider fixing block is driven to move by the upward movement of the lifting longitudinal beam. The movement of the slider fixing block drives the driving slider to move upward along the driving rail, and the upward movement of the driving slider drives the driving connecting rod, the curved rod and the push rod to move in turn, and the moving kinetic energy is transmitted to the secondary telescopic rod, thereby driving the secondary telescopic rod to move upward. When the secondary telescopic rod moves to the limit position, the primary telescopic rod is driven to move upward by the movement of the secondary telescopic rod until it reaches its limit position.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following characteristics:

[0014] 1. It can improve the utilization rate of the bumper storage space and the transportation stability, has good force uniformity, and is convenient for realizing the integrated process of loading, spraying, leveling, transportation, and storage on the bumper coating line. It can effectively solve the problems of uneven force on the existing bumper spray slide telescopic mechanism, the inability to ensure the stability of the telescopic action, and the possibility of jamming;

[0015] 2. The extendable sled is a purely mechanical structure, without the use of motors, controllers and other electronic control equipment, and does not increase the difficulty of spray protection and power supply;

[0016] 3. There are two installation directions for the bumper on the spray sled, which can complete the spraying of the left and right sides and end faces of the bumper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the lifting bracket assembly 1 of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the skid bracket assembly 3 of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the telescopic transmission mechanism 4 of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the bumper tooling 5 of the utility model;

[0022] Figure 6It is a schematic diagram of the installation structure of the utility model on the spraying skid, wherein (a) is horizontal installation, and (b) is vertical installation;

[0023] Figure 7 It is the overall working layout diagram of the utility model;

[0024] Figure 8 It is a schematic diagram of the structure of the utility model in a contracted state;

[0025] Fig. 9 It is a schematic diagram of the structure of the utility model in the extended state.

[0026] Among them, 1. lifting bracket assembly; 101. lifting longitudinal beam; 102. roller bracket; 103. lifting roller; 104. fixed angle piece; 105. lifting beam; 2. sled conveyor chain; 3. sled bracket assembly; 301. driving guide rail; 302. bracket base; 303. connecting installation groove; 304. sled column; 305. sled beam; 306. primary telescopic rod; 307. top guide rail; 308. secondary telescopic rod; 309. cushion block; 310. top slider; 311. middle slider; 312. middle guide rail; 4. telescopic transmission mechanism; 401. slider fixing block; 402. driving slider; 403. driving connecting rod; 404. bending rod; 405. push rod; 5. bumper tooling assembly; 501. suspension frame; 502. bumper body; 503. connecting positioning block; 6. lifting guide rail. DETAILED DESCRIPTION

[0027] like Figure 1 The extendable sled for automobile bumper coating line comprises a lifting bracket assembly 1, a sled conveying chain 2, a sled bracket assembly 3, a telescopic transmission mechanism 4 and a bumper tooling assembly 5. The telescopic transmission mechanism 4 is symmetrically arranged on the inner side of the sled bracket assembly 3, and six groups of bumper tooling assemblies 5 are symmetrically suspended on the outer side of the sled bracket assembly 3. Rollers are arranged at the bottom of the sled bracket assembly 3, which can slide on the upper side of the sled conveying chain 2 and drive the telescopic transmission mechanism 4 to extend and retract as the height of the lifting guide rail 6 changes.

[0028] like Figure 2 The lifting bracket assembly 1 includes a lifting longitudinal beam 101, a roller bracket 102, a lifting roller 103, a fixing angle piece 104 and a lifting cross beam 105. Three lifting cross beams 105 are evenly arranged between two lifting longitudinal beams 101 and fixed by fixing angle pieces 104 and fixing bolts. A lifting roller 103 is installed under the middle lifting cross beam 105 through the roller bracket 102 and the fixing angle piece 104.

[0029] like Figure 3The sled bracket assembly 3 includes a driving guide rail 301, a bracket base 302, a connecting installation groove 303, a sled column 304, a sled crossbeam 305, a primary telescopic rod 306, a top guide rail 307, a secondary telescopic rod 308, a cushion block 309, a top slider 310, an intermediate slider 311 and an intermediate guide rail 312. It provides the main support for the device and installs the telescopic transmission mechanism 4 and the bumper tooling assembly 5. It adopts a traditional rectangular frame structure and is welded and formed using rectangular steel profiles of different specifications. In order to facilitate the extension, the column adopts a segmented structure, specifically a sled column 304, a primary telescopic rod 306, and a secondary telescopic rod 308. Three sets of maintenance-free guide rails are installed, specifically a driving guide rail 301, an intermediate guide rail 312 and a top guide rail 307. The sliders moving on the corresponding guide rails are the driving slider 402, the intermediate slider 311 and the top slider 310. In order to ensure that the secondary telescopic rod 308 does not collide with the sled column 304 during extension and retraction, a cushion block 309 is added between the top slider 310 and the secondary telescopic rod 308. Through the above mechanical structure, the secondary telescopic rod 308 can slide up and down by the cooperation of the top slider 310 and the cushion block 309, and the primary telescopic rod 306 can move up and down in the groove of the sled column 304 by the cooperation of the middle slider 311 and the middle guide rail 312 under the drive of the secondary telescopic rod 308. The outer sides of the four groups of sled columns 304, the primary telescopic rod 306 and the secondary telescopic rod 308 are all provided with connecting installation grooves 303, and the two on the same side are combined to install the six groups of detachable bumper tooling assemblies 5.

[0030] like Figure 4 The telescopic transmission mechanism 4 includes a slider fixing block 401, a driving slider 402, a driving connecting rod 403, a crank rod 404 and a push rod 405. The telescopic principle is to use four sets of double crank slider mechanisms to convert the rotational motion of the driving connecting rod 403 into the up and down sliding of the primary telescopic rod 306 and the secondary telescopic rod 308. Among them, the four sets of driving sliders 402 at the bottom are coupled and fixed by the lifting bracket assembly 1. The lower part of the lifting bracket assembly 1 is provided with a lifting roller 103, which can roll on the upper side of the lifting guide rail 6 connected to the top of the sliding sled conveying chain 2. One end of the slider fixing block 401 is used to fix the lifting bracket assembly 1, and the other end is used to fix the driving slider 402. One end of the driving connecting rod 403 is hinged to the inner side of the driving slider 402, and the other end of the driving connecting rod 403 is hinged to the center point of the crank rod 404. One end of the crank rod 404 is hinged to the sliding sled column 304, and the other end of the crank rod 404 is hinged to one end of the push rod 405. One end of the push rod 405 is hinged to the secondary telescopic rod 308, and the top slider 310 can slide on the top guide rail 307. The sliding range of each slider on the corresponding guide rail can be limited by the limit block on the guide rail to avoid excessive contraction and excessive extension.

[0031] like Figure 5The bumper tooling assembly 5 includes a suspension frame 501, a bumper body 502 and a connection positioning block 503, wherein the suspension frame 501 is formed by welding steel profiles and symmetrically installed in the connection installation slot 303 on the outside of the sled bracket assembly 3 in the form of splicing, which is convenient for disassembly and replacement. The left, middle and right connection positioning blocks 503 are all made of POM material, one side of which fits with the inner curved surface of the bumper body 502, and the other side is fixedly installed on the suspension frame 501, which is convenient for accurate positioning when installing the bumper and ensures that the bumper will not fall off during transportation.

[0032] Figure 7 So Figure 6 (a) The three-dimensional model of the device is given in the form of installation. The device of this embodiment moves with the conveyor chain, and the movement direction is the same as the direction of travel of the vehicle. The double spraying manipulators on both sides complete the spraying of the left and right sides of the bumper body 502. Similarly, if the Figure 6 The installation form (b) can complete the spraying of the end surface of the bumper body 502 by double spraying robots on both sides.

[0033] When using, Figure 6 (a) Figure 7 When the horizontal installation form and the overall working layout diagram are shown, the specific working principle is as follows:

[0034] When the device moves to the position where the lifting guide rail 6 is provided on the top of the sliding sled conveying chain 2, the telescopic transmission mechanism 4 is in a position such as Figure 8 In the retracted state shown, the placement spacing of each bumper body 502 in the device is the smallest, that is, it is in a retracted state during circulation and storage, ensuring the stability of transportation and improving the utilization rate of storage space. When the device moves to the position of the lifting guide rail 6, the lifting roller 103 is lifted up by the setting of the lifting guide rail 6 to move upward, and the lifting longitudinal beam 101 is driven to move upward by the upward movement of the lifting roller 103, and the slider fixing block 401 is driven to move by the upward movement of the lifting longitudinal beam 101, and the driving slider 402 is driven to move upward along the driving guide rail 301 by the movement of the slider fixing block 401, and the driving connecting rod 403, the curved rod 404 and the push rod 405 are driven to move in turn by the upward movement of the driving slider 402, and the movement kinetic energy is transmitted to the secondary telescopic rod 308, thereby driving the secondary telescopic rod 308 to move upward, and when the secondary telescopic rod 308 moves up to the limit position, the primary telescopic rod 306 is driven to move up by the movement of the secondary telescopic rod 308 until it reaches its limit position.

[0035] like Fig. 9The fully extended state shown in the figure is at the spraying station at this time. The placement spacing of the bumper bodies 502 in the device is the largest, so that the spraying robot can spray the bumper bodies 502 in all directions. When the spraying process is completed, the device can be moved out of the range of the lifting guide rail 6, and the components sink due to weight and return to the position as shown in the figure. Figure 8 The collapsed state shown is convenient for circulation and storage.

Claims

1. An extendable skid for automobile bumper coating line, characterized in that: The invention comprises a lifting bracket assembly (1), a sled conveying chain (2), a sled bracket assembly (3), a telescopic transmission mechanism (4) and a bumper tooling assembly (5); the inner side of the sled bracket assembly (3) is provided with a telescopic transmission mechanism (4); the outer side of the sled bracket assembly (3) is provided with a bumper tooling assembly (5); the bottom of the inner side of the sled bracket assembly (3) is provided with a lifting bracket assembly (1); the sled bracket assembly (3) is provided at the top of the sled conveying chain (2); and the middle part of the top of the sled conveying chain (2) is fixedly connected with a lifting guide rail (6).

2. The extendable skid for automobile bumper coating line according to claim 1, characterized in that: The lifting bracket assembly (1) comprises a lifting longitudinal beam (101), a roller bracket (102), a lifting roller (103), a fixed angle piece (104) and a lifting cross beam (105); the two sides of the lifting cross beam (105) are respectively fixedly connected to the inner sides of the lifting longitudinal beams (101) on the two sides; the roller bracket (102) is fixedly connected to the bottom end of the middle lifting cross beam (105); the lifting roller (103) is movably connected to the inner side of the roller bracket (102); the bottom of the lifting roller (103) is movably connected to the top of the lifting guide rail (6); and the fixed angle piece (104) is fixedly connected to the connection angle between the lifting longitudinal beam (101), the roller bracket (102) and the lifting cross beam (105).

3. The extendable skid for automobile bumper coating line according to claim 2, characterized in that: The lifting beams (105) are arranged at equal distances from each other.

4. The extendable skid for automobile bumper coating line according to claim 1, characterized in that: The sled support assembly (3) comprises a driving guide rail (301), a support base (302), a connecting mounting groove (303), a sled column (304), a sled crossbeam (305), and a primary telescopic rod (306); the support base (302) is fixedly connected to the bottom of the sled column (304); both ends of the sled crossbeam (305) are fixedly connected to the inner side of the same transversely arranged sled column (304); and the primary telescopic rod (306) is movably connected to the inner cavity of the sled column (304) and passes through to the outer side of the top end of the sled column (304).

5. The extendable skid for automobile bumper coating line according to claim 4, characterized in that: The slide columns (304) are arranged in a rectangular shape and distributed at the four corners.

6. The extendable skid for automobile bumper coating line according to claim 4, characterized in that: The sled support assembly (3) also includes a top guide rail (307) and a secondary telescopic rod (308), wherein the secondary telescopic rod (308) is movably connected to the inner side of the primary telescopic rod (306), and the connecting and mounting groove (303) is respectively fixedly connected to the outer sides of the sled column (304), the primary telescopic rod (306) and the secondary telescopic rod (308), the driving guide rail (301) is fixedly connected to the bottom of the inner side of the sled column (304), and the top guide rail (307) is fixedly connected to the bottom of the outer side of the secondary telescopic rod (308).

7. The extendable skid for automobile bumper coating line according to claim 6, characterized in that: The sled support assembly (3) further comprises a cushion block (309), a top slider (310), an intermediate slider (311) and an intermediate guide rail (312); the cushion block (309) is fixedly connected to the top end of the inner side of the primary telescopic rod (306); the top slider (310) is fixedly connected to the inner side of the cushion block (309); the top slider (310) is movably sleeved on the surface of the top guide rail (307); the intermediate slider (311) is fixedly connected to the bottom end of the outer side of the primary telescopic rod (306); the intermediate guide rail (312) is fixedly connected to the top end of the inner cavity of the sled column (304); and the intermediate slider (311) is movably sleeved on the surface of the intermediate guide rail (312).

8. The extendable skid for automobile bumper coating line according to claim 1, characterized in that: The telescopic transmission mechanism (4) comprises a slider fixing block (401), a driving slider (402), a driving connecting rod (403), a bent rod (404) and a push rod (405), one end of the slider fixing block (401) is fixedly connected to the outer side of the lifting longitudinal beam (101), and one side of the driving slider (402) is fixedly connected to the other end of the slider fixing block (401).

9. The extendable skid for automobile bumper coating line according to claim 8, characterized in that: The other side of the driving slider (402) is movably sleeved on the surface of the driving guide rail (301); one end of the driving connecting rod (403) is hinged to the inner side of the driving slider (402); the other end of the driving connecting rod (403) is hinged to the center point of the curved rod (404); one end of the curved rod (404) is hinged to the slide column (304); the other end of the curved rod (404) is hinged to one end of the push rod (405); and the other end of the push rod (405) is hinged to the secondary telescopic rod (308).

10. The extendable skid for automobile bumper coating line according to claim 1, characterized in that: The bumper tooling assembly (5) comprises a suspension frame (501), a bumper body (502) and a connection positioning block (503); one end of the suspension frame (501) is fixedly inserted into the inner cavity of the connection installation groove (303); three groups of the connection positioning blocks (503) are arranged; the connection positioning blocks (503) are fixedly installed at the other end of the suspension frame (501) at equal intervals; and the inner side of the bumper body (502) is fixedly installed on the outer side of the connection positioning blocks (503).

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