Search

CN-113928784-B - Module for modular conveyor belt and modular conveyor belt formed from the module

CN113928784BCN 113928784 BCN113928784 BCN 113928784BCN-113928784-B

Abstract

The invention relates to a module for a modular conveyor belt, comprising a basic body extending in length in a first direction, the basic body having an upper surface and a lower surface, a first and a second longitudinal edge opposite each other with respect to a second direction orthogonal to the first direction, a plurality of first and second hinge elements, each of the first hinge elements being penetrated by a first hole, each of the second hinge elements being penetrated by a second hole, the first hinge elements and the second hinge elements being inserted into each other leaving a plurality of spaces, each of the rollers receiving in at least some of the spaces a corresponding roller, a portion of each of the rollers protruding from the upper surface, the plane being parallel with respect to the first and second directions and tangential to the portion of the roller protruding from the upper surface defining the conveying surface, the basic body comprising at least an engagement element engaging with teeth of a drive gear of the conveyor, and the plane being spaced from a plane through the axes of the first hole and the second hole, forming a support plane in sliding contact along a slider track.

Inventors

  • Carlo galbaniati
  • Norberto kataneo

Assignees

  • 意大利雷吉那链条集团

Dates

Publication Date
20260505
Application Date
20210713
Priority Date
20200714

Claims (20)

  1. 1. A module (10) for a modular conveyor belt (100) with a roller conveying surface for a continuous motorized conveyor (200), comprising a matrix (11) extending in length along a first direction (D1) between two opposite sides (12, 13), said direction being transverse with respect to a conveying Direction (DT), and said matrix having: An upper surface (14) and a lower surface (15), A first longitudinal edge (16) and a second longitudinal edge (17) opposite each other with respect to a second direction (D2) orthogonal to the first direction (D1), A plurality of first hinge elements (18) and a plurality of second hinge elements (21) protruding from the first longitudinal edge (16) and the second longitudinal edge, respectively, along the second direction (D2), wherein each of the first hinge elements (18) is penetrated by a respective first hole (19) whose axis is parallel to the first direction (D1), each of the second hinge elements (21) is penetrated by a respective second hole (22) whose axis is parallel to the first direction (D1), the first holes (19) being coaxial with each other to receive a respective hinge pin (20), the second holes (22) being coaxial with each other to receive a respective hinge pin (20), Wherein the first hinge element (18) is adapted to be inserted into a second hinge element (21) of another of the modules (10) such that respective first and second holes (19, 22) are coaxially aligned with each other to receive a hinge pin (20) connecting the modules (10) to each other, the first and second hinge elements (18, 21) being inserted into each other leaving free a plurality of spaces (V) in at least some of which at least respective rollers (23) are received, the rollers having an outer radius (R) and being coaxial with the first and second holes (19, 22) aligned with each other, Wherein each of the rollers (23) protrudes from the upper surface (14) by a portion, a surface parallel to the first direction (D1) and the second direction (D2) and tangential to the portion of the roller (23) protruding from the upper surface (14) defining the conveying Surface (ST), And comprises At least one engagement element adapted to engage with a tooth of a drive gear (201) of the continuous motorized conveyor, Characterized in that said lower surface (15) extends along a plane parallel to said conveying Surface (ST) for at least a segment and that the plane parallel to said conveying surface is spaced from the plane passing through the axes of said first hole (19) and said second hole (22) by a distance (H) higher than the outer radius (R) of said roller (23), said at least a segment of said lower surface (15) forming a supporting Plane (PA) adapted to be in sliding contact along a slide rail (202) of said continuous motorized conveyor.
  2. 2. Module (10) according to claim 1, characterized in that at least some of the rollers (23) constitute the engagement elements.
  3. 3. Module (10) according to claim 1, characterized in that said engagement element is constituted by a recess (25) obtained at least partially in said lower surface (15) outside said support Plane (PA).
  4. 4. Module (10) according to claim 1, characterized in that the engagement element is constituted by engagement teeth (26) extending downwards from the lower surface (15) outside the support Plane (PA).
  5. 5. Module (10) according to any one of claims 1 to 4, characterized in that the support Plane (PA) extends continuously along the lower surface (15) for the remaining length of the base body (11) except for the time of correspondence with the engagement elements, the support Plane (PA) being interrupted at the time of correspondence with the engagement elements.
  6. 6. The module (10) according to any one of claims 1 to 4, characterized in that the difference between the distance (H) and the outer radius (R) is greater than zero and less than or equal to 5mm.
  7. 7. The module (10) according to any one of claims 1 to 4, characterized in that the ratio of the pitch (P) of the module (10) to the diameter (D) of each of the rollers (23) is 1.1 or more and 3 or less, wherein the pitch (P) is equal to the distance between the axes of the first holes (19) and the second holes (22).
  8. 8. Module (10) according to any one of claims 1 to 4, characterized in that the distance (S) between two of said spaces (V) adjacent to each other, measured along said first direction (D1), is greater than zero and less than or equal to 20mm.
  9. 9. Module (10) according to any one of claims 1 to 4, characterized in that the ratio between the sum of all lateral distances (S) between two adjacent spaces (V) measured along the first direction and the sum of the lateral pitches (l+s) measured along the first direction is between 0.10 and 0.90.
  10. 10. Module (10) according to any one of claims 1 to 4, characterized in that each of said rollers (23) has a height measured along said first direction (D1) equal to the width (L) of the respective space (V) receiving said roller.
  11. 11. The module (10) according to any one of claims 1 to 4, wherein the base body (11) comprises a central rib (28) extending in length between two opposite sides (12, 13) and in thickness between the upper surface (14) and the lower surface (15), wherein the central rib (28) has a first longitudinal surface and a second longitudinal surface connecting the upper surface (14) and the lower surface (15) and defining the first longitudinal edge (16) and the second longitudinal edge (17), respectively.
  12. 12. The module (10) according to any one of claims 1 to 4, characterized in that: The first hinge elements (18) being distributed in pairs, spaced apart from each other along the first longitudinal edge (16), the first hinge elements (18) of each of the pairs being spaced apart from each other to define a respective space (V), The second hinge elements (21) being distributed in pairs, spaced apart from each other along the second longitudinal edge (17), the second hinge elements (21) of each of the pairs being spaced apart from each other to define a respective space (V), Wherein the pair of first hinge elements (18) is offset relative to the pair of second hinge elements (21).
  13. 13. A module (10) for a modular conveyor belt (100) with a roller conveying surface for a continuous motorized conveyor (200), comprising a matrix (11) extending in length along a first direction (D1) between two opposite sides (12, 13), said direction being transverse with respect to a conveying Direction (DT), and said matrix having: An upper surface (14) and a lower surface (15), A first longitudinal edge (16) and a second longitudinal edge (17) opposite each other with respect to a second direction (D2) orthogonal to the first direction (D1), A plurality of first hinge elements (18) and a plurality of second hinge elements (21) protruding from the first longitudinal edge (16) and the second longitudinal edge, respectively, along the second direction (D2), wherein each of the first hinge elements (18) is penetrated by a respective first hole (19) whose axis is parallel to the first direction (D1), each of the second hinge elements (21) is penetrated by a respective second hole (22) whose axis is parallel to the first direction (D1), the first holes (19) being coaxial with each other to receive a respective hinge pin (20), the second holes (22) being coaxial with each other to receive a respective hinge pin (20), Wherein the first hinge element (18) is adapted to be inserted into a second hinge element (21) of another of the modules (10) such that respective first and second holes (19, 22) are coaxially aligned with each other to receive a hinge pin (20) connecting the modules (10) to each other, the first and second hinge elements (18, 21) being inserted into each other leaving free a plurality of spaces (V) in at least some of which at least respective rollers (23) are received, the rollers having an outer radius (R) and being coaxial with the first and second holes (19, 22) aligned with each other, Wherein each of the rollers (23) protrudes from the upper surface (14) by a portion, a plane parallel to the first direction (D1) and the second direction (D2) and tangential to the portion of the roller (23) protruding from the upper surface (14) defining the conveying Surface (ST), And comprises At least one engagement element adapted to engage with a tooth of a drive gear (201) of the continuous motorized conveyor, Characterized in that at least some of said rollers (23) constitute said engagement elements.
  14. 14. The module (10) according to claim 13, characterized in that the ratio of the pitch (P) of the module (10) to the diameter (D) of each of the rollers (23) is 1.1 or more and 3 or less, wherein the pitch (P) is equal to the distance between the axes of the first holes (19) and the second holes (22).
  15. 15. Module (10) according to claim 13, characterized in that the distance (S) between two of said spaces (V) adjacent to each other measured along said first direction (D1) is greater than zero and less than or equal to 20mm.
  16. 16. Module (10) according to claim 13, characterized in that the ratio between the sum of all lateral distances (S) between two adjacent spaces (V) measured along the first direction and the sum of the lateral pitches (l+s) measured along the first direction is between 0.10 and 0.90.
  17. 17. Module (10) according to claim 13, characterized in that each of said rollers (23) has a height measured along said first direction (D1) equal to the width (L) of the respective space (V) receiving said roller.
  18. 18. Module (10) according to claim 13, characterized in that the base body (11) comprises a central rib (28) extending in length between two opposite sides (12, 13) and in thickness between the upper surface (14) and the lower surface (15), wherein the central rib (28) has a first longitudinal surface and a second longitudinal surface connecting the upper surface (14) and the lower surface (15) and respectively defining the first longitudinal edge (16) and the second longitudinal edge (17), the lower surface (15) extending along a plane parallel to the conveying Surface (ST) for at least one section forming a support Plane (PA) extending continuously along the lower surface (15) for the remaining length of the base body (11) except for the correspondence with the engagement element, which support Plane (PA) is interrupted in correspondence with the engagement element.
  19. 19. The module (10) according to claim 13, characterized in that: The first hinge elements (18) being distributed in pairs, spaced apart from each other along the first longitudinal edge (16), the first hinge elements (18) of each of the pairs being spaced apart from each other to define a respective space (V), The second hinge elements (21) being distributed in pairs, spaced apart from each other along the second longitudinal edge (17), the second hinge elements (21) of each of the pairs being spaced apart from each other to define a respective space (V), Wherein the pair of first hinge elements (18) is offset relative to the pair of second hinge elements (21).
  20. 20. Module (10) according to claim 19, characterized in that in each of said spaces (V) a respective at least one roller (23) is received.

Description

Module for modular conveyor belt and modular conveyor belt formed from the module Technical Field The present invention relates to a module of a modular conveyor belt with a roller conveying surface, a module of the type with rollers mounted on hinge pins for a motorized continuous conveyor, and to a modular conveyor belt formed by a plurality of such modules. Background In the field of conveyor belts, conveyor belts are known which are formed of a plurality of modules hinged to one another, and the conveying surface of the conveyor belt is defined by a plurality of rollers associated with the modules. In particular, the known modules consist of a basic body, corresponding to the front edge and the rear edge with respect to the direction of conveyance of the belt, provided with one or more eyelets or hinge elements, which receive the hinge pins with the adjacent modules. One or more recesses for coupling with the teeth of the drive gear of the belt are formed in the base body, which recesses are known to be accessible from the lower surface of the base body, that is to say from the surface opposite to the surface provided with the rollers. Two types of modular conveyor belt modules with roller conveying surfaces are known: a first type in which a support of one or more shafts projects from the upper surface of the base, on each of which a plurality of rollers are rotatably mounted adjacent to each other, so as to form a row extending substantially along the entire width of the module, less than the thickness of the support. The roller is rotatably mounted on a shaft other than the hinge pin. The conveying surface of the belt is defined by a plane tangential to the outer surface of the roller. Examples of such modules are described in documents NL1010530, WO2013030404 and WO2017055999 A2. The second type, in which rollers are incorporated in the thickness of the base body of the module, protrude above and below it, and are mounted coaxially with the hinge pins of the hinged continuous module. The rollers are rotatably mounted on hinge pins which hinge adjacent modules to each other and are symmetrically arranged with respect to the thickness of the base body. That is, the rollers protrude from below the lower surface of the base that forms a supporting plane of sliding contact on the slide rails of the conveyor. The conveying surface of the belt is defined by a plane tangential to the outer side surface of the portion of the roller that protrudes above the base of each module. Examples of such modules are described in patents US7527146 and US 10065802. The first type of module has the advantage of providing an almost coherent conveying surface formed by a continuous row of rollers. They also have a high mechanical resistance, sometimes too large compared to the application requirements, a high extension of the support plane in contact with the slide rail, and therefore, due to their sliding contact on the slide rail of the conveyor, wear is limited and there is a strong engagement with the drive gear. However, these modules have the disadvantage of being large in size, in particular in height and weight, which is detrimental to the conditions under which the belts formed from them are used. In particular, this type of module has a high overall height, given by the sum of the thickness of the matrix, the diameter of the rollers and the clearances existing between the rollers and the upper surface of the module itself. As known to those skilled in the art, the so-called "chordal effect (chordal effect)" of the opening and separation of the modules, corresponding to the winding of the belt around the drive gear, is directly related to said total height. This "chordal effect" is undesirable because it can cause problems of consistency of the conveying surface, corresponding to the passage of the so-called "dead-passage plate" arranged at the end of the belt, and of safety in use, for example with the possibility that the operator may accidentally injure himself. The overall weight of these modules also does not favor the conditions of use of the conveyor belt, on the one hand limiting the payload that can be transported and, on the other hand, affecting the state of the tensile stresses that must be applied to the belt in order to drive its movement. On the other hand, the second type of module has the advantage of having a lower overall height and weight than the first type of module. The lower height of these modules makes it possible to accommodate the open area between the rollers of successive modules of the same belt, corresponding to the end of the conveyor (head winding) and the head channel between the two successive conveyors during the winding step of the belt, with the consequent advantage of greater safety and regularity in the transport of the product as it passes between the two successive conveyors. However, the second known type of module also has certain drawbacks. A first drawback consists in