Non-powered roller conveyor

Abstract

The present invention relates to a production line conveying system, and specifically to an unpowered roller conveyor line, which is used for conveying or loading workpieces in a CNC machining production line, and belongs to the field of machinery. It comprises: a line frame, one end of which is a loading end, and the other end is a unloading end, and a number of rollers are evenly arranged from the loading end to the unloading end of the line frame, on which a parts box is placed, and the parts box is located on a number of rollers for sliding; a part box slide bar is fixedly provided on one side of the line frame from the loading end to the unloading end, and pulleys are connected to the two opposite side walls of the part box, and the part box can slide on the part box slide bar; the roller conveyor line of the present invention is unpowered to realize automatic loading and conveying of finished products without energy consumption; the roller conveyor line will not deviate, causing parts to fall, or even damage mechanical properties; the failure rate is low, easy to maintain, and the maintenance cost is low; the roller conveyor line has a moderate position and height, conforms to ergonomics, and reduces the labor intensity of operators.

Description

Technical Field

[0001] The invention relates to a production line conveying system, in particular to an unpowered roller conveyor line, which is used for conveying or loading workpieces in a numerical control processing production line and belongs to the field of machinery. Background Art

[0002] The inter-process logistics of workpieces in CNC machining production lines, also known as inter-station logistics and workshop logistics, refers to the logistics of each process and station within the workshop and between the workshop and warehouse during the production process.

[0003] Among the logistics solutions for the above-mentioned processes and workstations, the existing operations are: (1) manual handling, which is labor-intensive for operators, prone to fatigue, and low work efficiency; (2) transportation by turnover carts, where parts are stored in a centralized manner, which can cause damage to parts due to contact, and the total weight is heavy, which is labor-intensive for operators; (3) electric belt conveyor lines convey parts, which are prone to belt deviation, causing parts to fall off and damaging the assembly line. Summary of the invention

[0004] Based on the above situation, the present invention designs a non-powered roller conveyor line that can assist operators in transporting materials, realize automatic loading and conveying of finished products, ensure first-in-first-out, and prevent bumps and scratches between parts.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: an unpowered roller conveyor, comprising: a line frame, one end of the line frame is a feeding end, and the other end is a unloading end, a plurality of rollers are evenly arranged from the feeding end to the unloading end of the line frame, a parts box is placed on the rollers, and the parts box is located on the plurality of rollers for sliding; a parts box slide bar is fixedly provided on one side of the line frame from the feeding end to the unloading end, pulleys are connected to the two opposite side walls of the parts box, and the parts box can slide on the parts box slide bar;

[0006] In the above structure, the parts box is placed on the roller at the feeding end of the roller conveyor, and the parts box slides from the feeding end to the unloading end, and then slides from the parts box slide bar at the unloading end to the feeding end. Through this sliding method, the entire workpiece is transferred on the processing line, realizing an unpowered roller conveyor conveying method;

[0007] Furthermore, the line frame includes: an upper frame and a plurality of frame legs and feet for supporting the entire upper frame; the upper frame includes two mutually parallel side strips, and a plurality of rollers are fixedly connected between the two side strips;

[0008] The plurality of frame legs are evenly distributed at the bottom of the upper frame, and are used to stably support the wire frame. Support feet are respectively arranged at the bottom of the plurality of frame legs, and are fixed to the ground through the support feet.

[0009] Furthermore, the plurality of rollers are parallel to each other, and the end surfaces of the plurality of rollers are connected to the inner wall of the side strips. The end surfaces of the rollers are respectively provided with connecting pieces, and the rollers are connected to the inner wall of the side strips through the connecting pieces.

[0010] Furthermore, in order to ensure smooth transmission of parts on the roller conveyor line, the line frame near the unloading end is set to a downward slope structure, so that several rollers in the slope area form a 2° inclination angle toward the unloading end, so that the parts box will automatically slide down along the slope when it is about to slide to the unloading end of the roller conveyor line;

[0011] Furthermore, in order to prevent the part box from generating a large impact force between the part box and the end of the roller line due to the slope setting when the part box rolls to the edge of the unloading end, a vertical support beam is respectively provided on the upper end surface of the two side bars of the unloading end line body frame, a cross beam is provided between the two vertical support beams, and a limit buffer pad is respectively provided at the two ends of the inner side of the cross beam; when the part box reaches the end position of the unloading end, the limit buffer pad on the cross beam plays a certain role in buffering the part box;

[0012] Furthermore, a loading box for transporting blanks is provided on the wire frame above the parts box, and a plurality of vertical support beams are evenly provided on the upper end surfaces of the side strips on both sides of the wire frame;

[0013] A portion of the plurality of vertical support beams is arranged in a horizontal side strip area close to the feeding end, and another portion is arranged in a side strip area with an inclined slope close to the feeding end; the top surface of the vertical support beam arranged in the horizontal side strip area is flush with the top surface of the vertical support beam arranged in the side strip area with an inclined slope, and side panels and top panels are respectively arranged on the outer side surfaces and top surfaces of the vertical support beams in the two areas, and the upper surface of the top panel forms a walking track for the feeding box, and the bottom of the feeding box is provided with walking rollers, and the feeding box can roll on the walking track;

[0014] Furthermore, the length of the running track of the loading box is shorter than the length of the entire line frame, and due to the setting of the slope, the height of the vertical support beam located in the side strip area with the slope is higher than the height of the vertical support beam located in the horizontal side strip area;

[0015] Furthermore, in order to prevent the loading box from rolling to the end of the walking track and causing a large impact,

[0016] A crossbeam is arranged between the two vertical support beams at the end of the walking track, and a limit buffer pad is arranged at both ends of the inner side of the crossbeam, so as to play a buffering role when the loading box reaches the end;

[0017] Furthermore, the walking track is formed by docking a plurality of segmented top panels and side panels, each adjacent top panel is docked, each two adjacent side panels are docked, each docking position is provided with a vertical support beam, and each docking position of each two adjacent side panels is provided with a fixing hole, and the two side panels are connected to the vertical support beam through a connecting piece passing through the fixing hole;

[0018] Furthermore, in order to ensure that the loading box is not eccentric on the walking track, a limiting mechanism is arranged in the space at the bottom of the walking track; the limiting mechanism comprises: an L-shaped bent plate, a vertical shaft, a limiting wheel and a bearing; the upper end of the horizontal plate of the L-shaped bent plate supports the bottom plate of the loading box and the horizontal plate extends into the inside of the walking track, and the vertical plate of the L-shaped bent plate is connected to the walking wheel through an axis; a connecting hole is arranged on the horizontal plate, the top end of the vertical shaft is inserted into the connecting hole and fixed, and the lower end of the vertical shaft is connected to the limiting wheel through a bearing, and the limiting wheel is located at the lower part of the top panel of the walking track, and the outer peripheral surface of the limiting wheel contacts the inner wall of the side panel of the walking track;

[0019] Furthermore, the inner walls of several vertical support beams on the walking track are connected to several inner baffles through connecting parts, and the docking positions of every two adjacent inner baffles are connected through the vertical support beams; the pulleys on both sides of the parts box are in contact with the inner baffles to ensure smooth operation of the drum line of the parts box.

[0020] Furthermore, the line frame of the unpowered raceway of the present invention and the walking track above the line frame are made of standard industrial aluminum profiles, and the connecting parts therein are all standard profile connecting parts. The surface treatment of the line body: the surface of the machined parts is chemically nickel-plated; the sheet metal parts are made of stainless steel; the surface of the aluminum profile is brightly oxidized; and the surface of the fasteners is galvanized.

[0021] The parts box slide bar arranged on the side of the linear frame of the present invention is used for the parts box to return from the unloading end to the upper feeding end along the slide bar after the parts are unloaded at the unloading end; the parts box slide bar comprises an upper rod and a lower rod, and the upper rod is fixedly connected to a plurality of frame legs of the linear frame through a connecting piece; the lower rod is a stepped double-rod structure, and the lower rod is fixedly connected to a plurality of frame legs through a stepped connecting piece;

[0022] In the stepped double-rod structure, the height of the rod close to the frame leg is lower than the height of the rod far from the frame leg; when in use, the bottom of the parts box fits with the upper rod, and the double rods of the lower rod are in contact with the side edges of the box opening and the pulley of the parts box respectively.

[0023] The unpowered roller track of the present invention is designed as a double-line single-layer track line, including a double-line frame, and the parts box slide bars are respectively arranged on the outside of the line frames where they are located, and the double-line frame is a symmetrical structure.

[0024] Furthermore, another concept of the present invention is that: the line frame includes a first sloped area and a second sloped area from the feeding end to the unloading end, the inclination angle of the roller in the second sloped area is 2°, and the inclination angle of the roller in the first sloped area is less than 2°; this design facilitates the parts box arranged on the roller of the line frame to reach the unloading end more smoothly;

[0025] Furthermore, the parts box slide rail located on the side of the line body frame is designed to be inclined downward from the unloading end to the loading end. This design facilitates the parts box to return to the loading end more smoothly on the slide rod.

[0026] The technical effects of the technical means of the present invention are:

[0027] 1. The roller conveyor line is unpowered to realize automatic loading and conveying of finished products without energy consumption.

[0028] 2. The roller conveyor line will not deviate, causing parts to fall or even damage mechanical properties;

[0029] 3. Low failure rate, easy maintenance and low maintenance cost;

[0030] 4. The roller line position and height are moderate, ergonomic and reduce the labor intensity of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is the overall structure diagram of the present invention.

[0032] Figure 2 for Figure 1 Enlarged view of point A.

[0033] Figure 3 for Figure 1 A magnified view of the local structure.

[0034] Figure 4 for Figure 1 Top view of the local structure.

[0035] Figure 5 This is the structural diagram of the connection relationship of the feeding box walking roller limit mechanism.

[0036] Figure 6 It is a side view of the connection structure between the wire frame and the parts box slide rod.

[0037] In the figure, 1, line frame, 2, roller, 3, parts box, 3.1, pulley, 1.1, side strip, 4, frame leg, 5, foot, 6, vertical support beam, 7, cross beam, 8, limit buffer pad, 10, loading box, 10.1, loading box walking roller, 11, walking track, 11.1, top panel, 11.2, side panel, 13, L-shaped bent plate, 14, vertical axis, 15, limit wheel, 16, inner baffle, 17, upper rod, 18, lower rod, 19, stepped connector, A, inclined slope unloading end. DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. Based on the following embodiments of the invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0039] Example 1

[0040] As shown in the figure, the unpowered roller conveyor includes: a line frame, one end of which is a feeding end, and the other end is a feeding end, and a plurality of rollers are evenly arranged from the feeding end to the feeding end of the line frame, on which a parts box is placed, and the parts box slides on the plurality of rollers; a parts box slide bar is fixedly provided on one side of the line frame from the feeding end to the feeding end, and pulleys are connected to the two opposite side walls of the parts box, and the parts box can slide on the parts box slide bar;

[0041] The roller conveyor line of the above structure is 5100mm long and is a single-layer conveyor line as a whole;

[0042] The height of the roller from the ground is 1000mm, the height of the two edges is 100mm, the effective width of the roller is 450mm, the spacing is 100mm, the diameter is 38mm, and the roller is made of 304 stainless steel;

[0043] The wire frame comprises: an upper frame and a plurality of frame legs and feet for supporting the entire upper frame; the upper frame comprises two mutually parallel side strips, and a plurality of rollers are fixedly connected between the two side strips;

[0044] The plurality of frame legs are evenly distributed at the bottom of the upper frame, and are used to stably support the wire frame. Support feet are respectively arranged at the bottom of the plurality of frame legs, and are fixed to the ground through the support feet.

[0045] Furthermore, the plurality of rollers are parallel to each other, and the end surfaces of the plurality of rollers are connected to the inner wall of the side strips. The end surfaces of the rollers are respectively provided with connecting pieces, and the rollers are connected to the inner wall of the side strips through the connecting pieces.

[0046] Furthermore, in order to ensure smooth transmission of parts on the roller conveyor line, the line frame near the unloading end is set to a downward slope structure, so that several rollers in the slope area form a 2° inclination angle toward the unloading end, so that the parts box will automatically slide down along the slope when it is about to slide to the unloading end of the roller conveyor line;

[0047] Furthermore, in order to prevent the part box from generating a large impact force between the part box and the end of the roller line due to the slope setting when the part box rolls to the edge of the unloading end, a vertical support beam is respectively provided on the upper end surface of the two side bars of the unloading end line body frame, a cross beam is provided between the two vertical support beams, and a limit buffer pad is respectively provided at the two ends of the inner side of the cross beam; when the part box reaches the end position of the unloading end, the limit buffer pad on the cross beam plays a certain role in buffering the part box;

[0048] Furthermore, a loading box for transporting blanks is provided on the wire frame above the parts box. The loading box has a size of 800mm×620mm×150mm, and 8 parts are loaded therein and slide freely above the parts box. The upper end surfaces of the side strips on both sides of the wire frame are evenly provided with a plurality of vertical support beams.

[0049] A portion of the plurality of vertical support beams is arranged in a horizontal side strip area close to the feeding end, and another portion is arranged in a side strip area with an inclined slope close to the feeding end; the top surface of the vertical support beam arranged in the horizontal side strip area is flush with the top surface of the vertical support beam arranged in the side strip area with an inclined slope, and side panels and top panels are respectively arranged on the outer side surfaces and top surfaces of the vertical support beams in the two areas, and the upper surface of the top panel forms a walking track for the feeding box, and the bottom of the feeding box is provided with walking rollers, and the feeding box can roll on the walking track;

[0050] Furthermore, the length of the running track of the loading box is shorter than the length of the entire line frame, and due to the setting of the slope, the height of the vertical support beam located in the side strip area with the slope is higher than the height of the vertical support beam located in the horizontal side strip area;

[0051] Furthermore, in order to prevent the loading box from rolling to the end of the walking track and causing a large impact,

[0052] A crossbeam is arranged between the two vertical support beams at the end of the walking track, and a limit buffer pad is arranged at both ends of the inner side of the crossbeam, so as to play a buffering role when the loading box reaches the end;

[0053] Furthermore, the walking track is formed by docking a plurality of segmented top panels and side panels, each adjacent top panel is docked, each two adjacent side panels are docked, each docking position is provided with a vertical support beam, and each docking position of each two adjacent side panels is provided with a fixing hole, and the two side panels are connected to the vertical support beam through a connecting piece passing through the fixing hole;

[0054] Furthermore, in order to ensure that the loading box is not eccentric on the walking track, a limiting mechanism is arranged in the space at the bottom of the walking track; the limiting mechanism comprises: an L-shaped bent plate, a vertical shaft, a limiting wheel and a bearing; the upper end of the horizontal plate of the L-shaped bent plate supports the bottom plate of the loading box and the horizontal plate extends into the inside of the walking track, and the vertical plate of the L-shaped bent plate is connected to the walking wheel through an axis; a connecting hole is arranged on the horizontal plate, the top end of the vertical shaft is inserted into the connecting hole and fixed, and the lower end of the vertical shaft is connected to the limiting wheel through a bearing, and the limiting wheel is located at the lower part of the top panel of the walking track, and the outer peripheral surface of the limiting wheel contacts the inner wall of the side panel of the walking track;

[0055] Furthermore, the inner walls of several vertical support beams on the walking track are connected to several inner baffles through connecting parts, and the docking positions of every two adjacent inner baffles are connected through the vertical support beams; the pulleys on both sides of the parts box are in contact with the inner baffles to ensure smooth operation of the drum line of the parts box.

[0056] The parts box slide bar on the side of the wire frame is used for the parts box to return from the unloading end to the upper feeding end along the slide bar after the parts are unloaded at the unloading end; the parts box slide bar includes an upper rod and a lower rod, and the upper rod is fixedly connected to several frame legs of the wire frame through a connecting piece; the lower rod is a stepped double rod structure, and the lower rod is fixedly connected to several frame legs through a stepped connecting piece;

[0057] In the stepped double-rod structure, the height of the rod close to the frame leg is lower than the height of the rod far from the frame leg; when in use, the bottom of the parts box fits with the upper rod, and the double rods of the lower rod are in contact with the side edges of the box opening and the pulley of the parts box respectively.

[0058] Example 2

[0059] On the basis of Example 1, the unpowered roller conveyor of this embodiment comprises: a line frame, wherein the line frame comprises a first sloped area and a second sloped area from the feeding end to the unloading end, wherein the rollers in the second sloped area have an inclination angle of 2°, and the rollers in the first sloped area have an inclination angle of less than 2°; such a design facilitates the parts boxes arranged on the rollers of the line frame to reach the unloading end more smoothly;

[0060] Furthermore, the parts box slide rail located on the side of the line body frame is designed to be inclined downward from the unloading end to the loading end. This design facilitates the parts box to return to the loading end more smoothly on the slide rod.

[0061] In the above embodiments of the present invention, the unpowered roller track is designed as a double-line single-layer track line, including a double-line frame, and the parts box slide bars are respectively arranged on the outside of the line frames where they are located, and the double-line frame is a symmetrical structure.

[0062] The key point of the invention of this line body is that it is unpowered, has no energy consumption, is ergonomic, and reduces the labor intensity of operators; the positions that require maintenance and care are that the track must be kept clean, the dirt on the roller line body must be cleaned in time, and the bolts at each connection point must be regularly checked for looseness and tightened in time.

[0063] The present invention can also be designed with a powered roller conveyor line body, which utilizes the cooperation of a motor and a sensor and chain transmission to realize automatic loading and conveying of finished products.

Claims

1. Unpowered roller track, characterized in that: include: A wire frame, one end of which is a feeding end and the other end is a unloading end. A plurality of rollers are evenly arranged from the feeding end to the unloading end of the wire frame, on which a parts box is placed, and the parts box slides on the plurality of rollers; a parts box slide bar is fixedly arranged on one side of the wire frame from the feeding end to the unloading end, and pulleys are connected to two opposite side walls of the parts box, and the parts box can slide on the parts box slide bar; The wire frame comprises: an upper frame and a plurality of frame legs and feet for supporting the entire upper frame; The parts box slide bar includes an upper bar and a lower bar, the upper bar is fixedly connected to a plurality of frame legs of the wire frame through a connecting piece; the lower bar is a stepped double-bar structure, the lower bar is fixedly connected to a plurality of frame legs through a stepped connecting piece; In the stepped double-rod structure, the height of the rod close to the frame leg is lower than the height of the rod far from the frame leg; the bottom of the parts box fits with the upper rod, and the double rods of the lower rod are respectively in contact with the side edge of the box opening and the pulley of the parts box.

2. The unpowered roller track according to claim 1, characterized in that: The upper frame comprises two mutually parallel side strips, and a plurality of rollers are fixedly connected between the two side strips.

3. The unpowered roller track according to claim 2, characterized in that: The rollers are parallel to each other, and the end surfaces of the rollers are connected to the inner wall of the side strips. The end surfaces of the rollers are respectively provided with connecting pieces, and the rollers are connected to the inner wall of the side strips through the connecting pieces.

4. The unpowered roller track according to claim 2, characterized in that: The wire frame on the side close to the unloading end is arranged as a downwardly inclined slope structure, so that a number of rollers in the inclined slope area form an inclination angle of 2° toward the unloading end.

5. The unpowered roller track according to claim 2, characterized in that: A vertical support beam is respectively arranged on the upper end faces of the two side strips of the blanking end wire frame, a cross beam is arranged between the two vertical support beams, and a limiting buffer pad is respectively arranged at the two ends of the inner side of the cross beam.

6. The unpowered roller track according to claim 2, characterized in that: A loading box for transporting raw materials is also provided on the wire frame above the parts box, and a number of vertical support beams are evenly arranged on the upper end surfaces of the side strips on both sides of the wire frame; a part of the vertical support beams is arranged in the horizontal side strip area close to the loading end, and the other part is arranged in the side strip area with an inclined slope close to the unloading end; the top surface of the vertical support beam arranged in the horizontal side strip area is flush with the top surface of the vertical support beam arranged in the side strip area with an inclined slope, and side panels and top panels are respectively arranged on the outer side surfaces and top surfaces of the vertical support beams in the two areas, and the upper surface of the top panel forms a walking track for the loading box, and walking rollers are arranged at the bottom of the loading box, and the loading box can roll on the walking track.

7. The unpowered roller track according to claim 6, characterized in that: The walking track is formed by docking a number of segmented top panels and side panels, where every two adjacent top panels are docked, and every two adjacent side panels are docked, and each docking position is provided with a vertical support beam, and the docking position of every two adjacent side panels is provided with a fixing hole, and the two side panels are connected to the vertical support beam through a connecting piece passing through the fixing hole.

8. The unpowered roller track according to claim 6, characterized in that: A limiting mechanism is arranged in the space at the bottom of the walking track; the limiting mechanism comprises: an L-shaped bent plate, a vertical shaft, a limiting wheel and a bearing; the upper end of the horizontal plate of the L-shaped bent plate supports the bottom plate of the loading box and the horizontal plate extends to the inside of the walking track, and the vertical plate of the L-shaped bent plate is connected to the walking roller through a shaft; The horizontal plate is provided with a connecting hole, the top end of the vertical shaft is inserted into the connecting hole and fixed, the lower end of the vertical shaft is connected to a limiting wheel through a bearing, the limiting wheel is located at the lower part of the top panel of the walking track, and the outer peripheral surface of the limiting wheel contacts the inner wall of the side panel of the walking track.

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