DE102016207152A1 - Roller conveyor with spring-loaded carrying rollers and casting washing unit with such roller conveyor - Google Patents

Abstract

The invention relates to a roller conveyor (100) for piece goods with two side supports (120) and with a plurality of cylindrical support rollers (110) which form a substantially horizontal conveying plane for the cargo rotatably between the side supports (120) and end in the side supports (120 ) are stored. The roller conveyor (100) has at least one section (A), in which the support rollers (110) are resiliently mounted in the side supports (120) and thereby can deflect away in the vertical direction (V) down. The invention further relates to a casting washing plant comprising at least one such roller conveyor (100).

Description

The invention relates to a roller conveyor for general cargo with two side supports and with a plurality of cylindrical support rollers, which are arranged a substantially horizontal conveying plane for the cargo rotatably between the side rails and stored or suspended end in the side rails.

The invention further relates to a casting casting machine for castings with such a roller conveyor.

Roller conveyors of the kind in question are known from the prior art, including, for example, the patents DE 43 09 222 A1 . GB 1,118,846 A and US 4,325,473 A is pointed out.

The known from the prior art roller conveyors are exposed, especially in heavy and / or angular cargo, heavy wear. Furthermore, there is sometimes a considerable amount of noise.

The invention has for its object to provide a roller conveyor of the kind in question, which does not have at least one associated with the prior art disadvantage or at least only to a reduced extent.

This object is achieved by a roller conveyor according to the invention with the features of claim 1. With a sibling claim, the invention also extends to a cast-washing system comprising at least one roller conveyor according to the invention. Preferred developments and refinements of the invention are analogous to both subject matters of the dependent claims, the following description and the figures.

The roller conveyor according to the invention is characterized in that it has at least one section or conveyor section, within which the support rollers are resiliently mounted or suspended in the side supports and thus can deflect away in the vertical direction downwards.

Under a resilient mounting or suspension is understood that the respective support rollers are not rigidly mounted on or in the side members, but yielding, so that these support rollers, starting from a zero or initial position down, preferably only down, spring or . and then finally spring back to their original position. This spring movement is made possible only by a corresponding storage of otherwise rigid in itself support rollers. The spring-mounted or suspended carrying rollers can also be referred to as spring-loaded carrying rollers.

It has been shown that the wear of the support rollers, in particular on their ball bearings, as well as the noise development are significantly reduced by the suspension according to the invention. A further advantage is that the ergonomics are improved during manual handling of the piece goods transported on the roller conveyor according to the invention, for example when turning. Another advantage is also that particularly sensitive cargo is transported particularly gently on the roller conveyor according to the invention. For example. Damages caused by hard impacts on the transport rollers are excluded.

The spring-mounted support rollers can eg. By end or end-side bearing pin (such as. In the GB 1,118,846 A be shown) in the side supports, wherein the bearing pins in the side members from below by means of springs, ie by at least one spring, for example. A coil spring and / or gas spring, may be supported. The resilient support can be direct or indirect (eg. With the help of bearing elements, see below). The suspension and damping characteristics can be adjusted based on the springs used and thereby, for example, be adapted to the weight of the piece goods. Due to the resilient support on the bearing journal, the respective support rollers are also biased upward and thereby held at no load in its initial position.

The side members can, at least in the relevant section, be designed as a ladder-like frame, with an upper side member, a lower side member and rung-like between the upper side member and lower side member arranged vertical support beams, wherein the springs for the resilient mounting of the support rollers are arranged in these vertical support beams , The vertical support beams are preferably designed for this purpose as a hollow profile carrier. Due to the ladder-type side support, the roller conveyor is very stable and therefore also suitable for large and / or heavy piece goods (eg castings, see below). The positioning of the springs inside the support beams allows a space-saving and protected arrangement.

The spring-mounted support rollers can be supported by means of bearing elements (in the example. The bearing pins engage) in the support beams, wherein the bearing elements are longitudinally displaceable attached to the support beams and biased by arranged inside the support beams springs upwards. The support beams may, for example, be formed with vertical longitudinal grooves in which the bearing elements are guided. Preferably, the bearing elements are made of light metal or plastic.

Preferably, the bearing elements on guide areas, with which they are on the support beams, for example. In the vertical longitudinal grooves, undercut attached and guided. Furthermore, the bearing elements can be formed with inside spring pockets in which the springs (preferably one spring each) are arranged or accommodated. A spring pocket creates space for the arrangement of at least one spring. End stops for the bearing elements are preferably provided, which limit their movement paths and thereby also the spring travel of the support rollers down. By the end stops to be prevented in particular that used as spring elements coil springs are compressed during compression to block length and thereby damaged.

The conveying plane formed by the support rollers of the roller conveyor according to the invention may have a slope, in particular a slight slope with an inclination of less than 2 °, and at least one formed with spring-loaded support rollers section which forms a stop or braking device for the cargo and the especially at the end or before the end of the roller conveyor is located. If the piece goods reach the relevant section, they are stopped or at least braked by compression or sinking of the carrying rollers (stop or braking function). It also prevents that the piece goods located in the section in question roll away despite falling (holding function).

Preferably, the support rollers of the roller conveyor according to the invention, at least the spring-mounted support rollers, in the axial direction continuous roller body. The support rollers or roller bodies thus have a cylindrical or roller-like shape. The axial length of the continuous roller body substantially corresponds to the width of the conveying plane.

At least the spring-mounted support rollers or their roller body can have a sheath or a protective cover, for example. Made of rubber or soft plastic. Such sheathing or protective coatings are useful for sensitive cargo, eg. Castings with sealing surfaces, but can be easily damaged, the damaged support rollers then consequential damage to the cargo, for example. At the sensitive sealing surfaces of castings, can cause. So far, such support rollers must therefore be replaced after a short period of use. Due to the resilient mounting of the support rollers according to the invention, the sheaths or protective coatings are spared and are therefore, especially in heavy and / or angular general cargo, exposed to little wear. The service life is extended considerably.

The casting washing system according to the invention (for example for gearbox housing) comprises at least one washing station for the castings or parts and at least one roller conveyor according to the invention, this roller conveyor preferably being arranged on the parts or casting outlet of the washing station. This roller conveyor has in particular a trained with spring-loaded support rollers section in which the cast pieces are blown off manually or automatically with compressed air and thereby turned.

The invention will be explained in more detail with reference to the figures. The features shown in the figures and / or explained below may be, even detached from concrete feature combinations, general features of the invention and further develop the invention.

1 schematically shows a roller conveyor in a side view.

2 shows a section through the roller conveyor according to the in 1 specified cutting course.

3 shows a further section according to the in 2 specified cutting course.

1 shows a trained with feet roller conveyor 100 for piece goods with rotatably mounted cylindrical carrying rollers or rollers 110 , which form a horizontal conveying plane for the piece goods, and with two parallel side carriers or side frames 120 on which the rotatable carrying rollers 110 are stored or suspended (in 1 is just one of the side skirts 120 visible, noticeable). The carrying roles 110 are arranged parallel to each other. These are passive carrying rollers without drive. In principle, the carrying rollers 110 or at least some of the carrying roles 110 also be equipped with a drive or connected. The roller conveyor 100 is used, for example, for the conveyance of castings in a cast-washing plant.

The roller conveyor 100 has a section A in which the carrying rollers 110 are spring-mounted and thereby in the vertical direction (V) can wegfedern down. In principle, all carrying roles 110 the roller conveyor 100 be resilient mounted or suspended. At least in section A is the page frame 120 ladder-like design, with an upper side member 121 , a lower side member 122 and sprout-like between upper side member 121 and lower side member 122 arranged vertical support beams 123 , each at the positions of the spring-loaded support rollers 110 are located.

The 1 shows the roller conveyor 100 only in a schematic side view. The more accurate Structure in section A, in particular the resilient mounting of the support rollers 110 , results from the 2 making a longitudinal section through one of the support beams 123 shows (according to the in 1 marked section BB), and the 3 that cross section through the same support beam 123 shows (according to the in 2 marked cutting path CC). The roller conveyor 100 has on the other support vehicles 123 a fundamentally identical structure.

As seen from the sectional views in 2 and 3 shows, is the page frame 120 constructed of profile beams, which are, for example, purchased as semi-finished, cut to length and joined in a suitable manner. Preferably, it is aluminum profiles. The one with vertical alignment between lower profile beam 122 and upper profile beam 121 arranged support beams 123 has one of the carrying role 110 facing longitudinal groove 124 on, in the undercut a bearing element 130 attached and guided longitudinally or vertically displaceable. The example. Made of plastic bearing element 130 is this with a leadership area 131 formed, in particular with respect to its guide width (see 3 ), has a relatively large guide length. The bearing element 130 further includes a bearing bore or bushing 135 in which a trunnion 115 a carrying role 110 intervenes.

Inside the support 123 is a spiral spring 140 arranged, with its upper end against the bearing element 130 pushes and this together with the carrying role 110 biasing upward, causing the carrying roller 110 is held at no load in the starting position shown. At its lower end, the spring is supported 140 on the lower side member 122 from. To inside the support bracket 123 despite limited space sufficient space for a suitable spring 140 to provide, has the bearing element 130 an inside spring pocket 132 on. The convincingly simple spring mechanism is robust, low-maintenance and easy to repair in a compact and protected design.

Starting from the in 2 shown starting position, the support roller 110 For example, to cushion shocks and / or to fulfill a stop, brake or hold function (see above), spring downwards as illustrated by the arrow, and finally spring back to its starting position. Because the carrier role 110 is rigid in itself, it comes at both end bearing points to essentially synchronous motion sequences. The carrying role 110 Not only does it spring in on one side, but it springs in the whole (ie the entire roller body including axle or shaft). During compression or immersion, the spring travel is achieved by striking the bearing element 130 on the lower side member 122 limited. The bearing element 130 is this with an end stop 133 formed, which is such that the spring 140 can not be compressed to block length. To prevent a hard stop rubber buffers or the like may also be provided.

LIST OF REFERENCE NUMBERS

100

roller conveyor

110

supporting role

115

pivot

120

side beams

121

upper profile carrier

122

lower profile beam

123

support beam

124

longitudinal groove

130

bearing element

131

guide region

132

Pencil Case

133

end stop

135

bearing bore

140

feather

A

section

H

horizontal

V

vertical

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4309222 A1 [0003]
• GB 1118846 A [0003, 0010]
• US 4325473 A [0003]

Claims (10)

Roller conveyor ( 100 ) for general cargo with two side carriers ( 120 ) and with several cylindrical support rollers ( 110 ), the forming a substantially horizontal conveying plane for the cargo rotatably between the side beams ( 120 ) arranged and end in the side carriers ( 120 ), characterized in that the roller conveyor ( 100 ) has at least one section (A) in which the carrying rollers ( 110 ) in the page carriers ( 120 ) are resiliently mounted and thereby in the vertical direction (V) can wegfedern down. Roller conveyor ( 100 ) according to claim 1, characterized in that the spring-mounted support rollers ( 110 ) by means of journals ( 115 ) in the page carriers ( 120 ), wherein the bearing journals ( 115 ) in the page carriers ( 120 ) from below by means of springs ( 140 ) are supported. Roller conveyor ( 100 ) according to claim 1 or 2, characterized in that the side supports ( 120 ) are formed as a ladder-like frame, with an upper side member ( 121 ), a lower side member ( 122 ) and sprout-like between upper side member ( 121 ) and lower side member ( 122 ) arranged vertical support beams ( 123 ), in which springs ( 140 ) for the resilient mounting of the carrying rollers ( 110 ) are arranged. Roller conveyor ( 100 ) according to claim 3, characterized in that the carrying rollers ( 110 ) using bearing elements ( 130 ) in the support beams ( 123 ), wherein the bearing elements ( 130 ) longitudinally displaceable on the support beams ( 123 ) and by the springs ( 140 ) are biased upward. Roller conveyor ( 100 ) according to claim 4, characterized in that the bearing elements ( 130 ) Management areas ( 131 ), with which these on the support beams ( 123 ) are undercut attached and guided. Roller conveyor ( 100 ) according to claim 5, characterized in that the bearing elements ( 130 ) inside spring pockets ( 132 ), in which the springs ( 140 ) are arranged. Roller conveyor ( 100 ) according to claim 4, 5 or 6, characterized in that end stops ( 133 ) for the bearing elements ( 130 ) are provided which limit the spring travel down. Roller conveyor ( 100 ) according to one of the preceding claims, characterized in that by the carrying rollers ( 110 ) has a gradient and one with spring-mounted support rollers ( 110 ) formed section (A), which forms a stop or braking device for the cargo. Roller conveyor ( 100 ) according to one of the preceding claims, characterized in that the carrying rollers ( 110 ) have in the axial direction continuous roller body. Casting washing plant with a washing station and at least one roller conveyor ( 100 ) according to one of the preceding claims, which is preferably arranged at the outlet of the washing station.

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