Gypsum board raw material conveying device

Abstract

The invention discloses a gypsum board raw material conveying device which comprises a belt weigher, a limiting device and a tensioning mechanism. The belt weigher is used for transporting raw materials and can weigh the raw materials; the limiting devices are arranged at roll shafts at the two ends of the belt weigher so as to limit deviation of a rotary belt of the belt weigher in the raw material conveying process; the tensioning mechanism is arranged inside or outside the belt weigher and is used for applying external force to the rotary belt, so that the rotary belt keeps constant tension relative to the roll shaft to ensure that the limiting device can keep limiting on the rotary belt all the time; according to the gypsum board raw material conveying device, the rotation belt is limited in the conveying process, so that the stability of the rotation belt in the conveying process is kept, and the weighing error of the belt weigher is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of gypsum board production and processing, and in particular to a gypsum board raw material conveying device. Background Art

[0002] In the production of gypsum board production line, during the transportation of raw materials, the weight of raw materials is generally weighed by belt scale. How to ensure the weighing accuracy of belt scale is the key to ensure the accuracy of raw material weighing and the quality of final gypsum board products.

[0003] In the daily production process, there are several phenomena that will affect the weighing accuracy of the belt scale:

[0004] 1) The rotating belt of the belt scale may deviate during the transportation of raw materials, causing the rotating belt to scratch against foreign objects and cause the rotating belt to vibrate. Therefore, the weighing of the raw materials will cause the rotating belt to wear and cause the production line to stop for maintenance.

[0005] 2) During the use of the rotating belt, factors such as wear and material aging will cause the tension of the rotating belt to change, which will cause errors in the force applied to the weighing sensor of the belt scale, resulting in errors between the weighing results of the belt scale and the actual situation; if the gap between the rotating belt and the roller is too large, the roller will not be able to drive the rotating belt to transport raw materials.

[0006] 3) The uneven distribution of materials on the surface of the rotating belt will cause errors in the force applied to the weighing sensor of the belt scale, resulting in errors between the weighing results of the belt scale and the actual situation. Summary of the invention

[0007] The object of the present invention is to provide a gypsum board raw material conveying device, which restricts the rotating belt during transportation to maintain the stability of the rotating belt during transportation, avoids weighing errors of the belt scale, and solves the technical problems existing in the prior art.

[0008] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0009] A gypsum board raw material conveying device comprises: a belt scale for transporting raw materials and capable of weighing the raw materials; a limit device, arranged at rollers at both ends of the belt scale, to limit the deviation of the rotating belt of the belt scale during the process of transporting raw materials; a tensioning mechanism, arranged inside or outside the belt scale, to apply an external force to the rotating belt so that the rotating belt maintains a constant tension relative to the roller, thereby ensuring that the limit device can always keep the rotating belt restricted.

[0010] Furthermore, the limiting device includes an inner groove arranged on the outer side wall of the roller shaft and a protrusion arranged on the inner side of the rotating belt, and the protrusion can be stuck in the inner groove to limit the deviation of the rotating belt during the transportation of raw materials.

[0011] Furthermore, the inner grooves are provided in multiple groups, which are distributed in circles at equal intervals on the outer wall of the roller along the axis of the roller; the protrusions are provided in multiple groups, and the multiple groups of protrusions are arranged at equal intervals along the transmission direction of the rotating belt; the spacing between two adjacent inner grooves is consistent with the spacing between two adjacent protrusions, so that in the process of transporting raw materials, multiple protrusions can be stuck in the inner grooves in sequence.

[0012] Furthermore, the projection shape of the protrusion on the rotating belt is V-shaped, and the inner groove is also V-shaped; and the distance between two adjacent protrusions is such that there are overlapping parts between the two ends of one of the protrusions and the middle position of the other protrusion along the transmission direction of the rotating belt, so that in the process of transporting raw materials, there is always a group of partial structures of the protrusions that can be stuck in the inner groove.

[0013] Furthermore, the tensioning mechanism includes a spring telescopic rod and a roller, the roller is arranged on a mounting seat so that the roller can be rotated, and the mounting seat is arranged at the movable end of the spring telescopic rod; a base is arranged at a middle position inside or outside the belt scale along the transmission direction of the rotating belt, and the spring telescopic rod is arranged vertically upward on the base, so that the roller can contact the outer side of the belt located below the rotating belt, and the spring telescopic rod is in a retracted state.

[0014] Furthermore, the belt scale is provided with a gantry upwardly disposed behind the feed port of the belt scale along the transmission direction of the rotating belt, a first electric telescopic rod is vertically downwardly disposed on the gantry, a limit piece is provided at the movable end of the first electric telescopic rod, and the limit piece is used to limit the height of the raw material on the rotating belt so that the raw material can be flattened on the rotating belt.

[0015] Furthermore, the limiting member includes a first limiting plate and a second limiting plate, the first limiting plate and the second limiting plate form an angle, the first limiting plate is arranged at the movable end of the first electric telescopic rod, and the first limiting plate is arranged parallel to the rotating belt, and the second limiting plate is inclined upward relative to the rotating belt.

[0016] Furthermore, the first limit plate and the second limit plate are hinged, a second electric telescopic rod is provided between the first electric telescopic rod and the second limit plate, and both ends of the second electric telescopic rod are respectively hinged to the first electric telescopic rod and the second limit plate; through the extension and retraction of the second electric telescopic rod, the second limit plate is driven to rotate downward to apply an extrusion force to the raw material in the transmission direction of the rotating belt.

[0017] Furthermore, the belt scale is provided with a scraper at the unloading port of the belt scale, and the scraper is arranged parallel to the roller axis; the scraper is provided with a brush on the edge of the scraper facing the rotating belt, and the brush is in contact with the rotating belt.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The gypsum board raw material conveying device provided by the present invention restricts the rotating belt by clamping the protrusion on the rotating belt into the inner groove on the roller shaft of the belt scale to prevent the rotating belt from running off.

[0020] Furthermore, a roller with a spring telescopic rod is provided inside the belt scale, which can apply external force to the rotating belt so that the rotating belt always maintains sufficient tension relative to the roller, which not only ensures that the protrusion can be stuck in the inner groove; it also solves the problem of reduced external force on the weighing sensor due to lack of tension in the rotating belt, thereby avoiding errors in the weighing results.

[0021] Furthermore, the raw materials are spread flat on the rotating belt through a limit plate to ensure that the load cell is evenly stressed to avoid errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of a gypsum board raw material conveying device;

[0024] Figure 2 It is a schematic diagram of the structure at the roller;

[0025] Figure 3 It is a schematic diagram of the structure of the protrusion at the rotating belt;

[0026] Figure 4 It is a structural schematic diagram of the tensioning mechanism;

[0027] Figure 5 A schematic diagram of the structure for the limiter to flatten the raw material;

[0028] Figure 6 It is a structural schematic diagram of the second limiting plate in the limiting member rotating downward.

[0029] The numbers in the figure represent the following:

[0030] 1-belt scale, 11-roller, 12-rotating belt;

[0031] 2-limiting device, 21-bump, 22-inner groove;

[0032] 3-tensioning mechanism, 31-spring telescopic rod, 32-roller, 33-mounting seat;

[0033] 41-gantry, 42-first electric telescopic rod, 43-limiting member, 44-first limiting plate, 45-second limiting plate, 46-second electric telescopic rod, 47-bracket;

[0034] 51-scraper, 52-brush. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1 As shown, the present invention provides a gypsum board raw material conveying device, including a belt scale 1, a limiting device 2 and a tensioning mechanism 3.

[0037] Among them, the belt scale 1 is used to transport raw materials and can weigh the raw materials; and the belt scale 1 is a very mature product in the prior art, so this application no longer describes the specific structure and principle of the belt scale 1 in detail, and only a simple schematic diagram is presented in the figure.

[0038] The limit device 2 is arranged at the rollers 11 at both ends of the belt scale 1 to limit the deviation of the rotating belt 12 of the belt scale 1 during the transportation of raw materials, thereby avoiding the rotating belt 12 from scratching against external objects, especially the support structure of the belt scale 1, ensuring the stability of the operation of the belt scale 1 and ensuring the weighing accuracy; at the same time, avoiding the wear of the rotating belt 12 and extending the service life of the rotating belt 12.

[0039] The tensioning mechanism 3 is arranged inside or outside the belt scale 1, and is used to apply external force to the rotating belt 12, so that the rotating belt 12 maintains a constant tension relative to the roller 11, to ensure that the limit device 2 can always keep the rotating belt 12 restricted; it also solves the problem of reduced external force on the weighing sensor due to lack of tension of the rotating belt 12, thereby avoiding errors in the weighing results.

[0040] In this embodiment, an embodiment of the limiting device 2 is provided, such as Figure 2 and Figure 3 As shown:

[0041] The limiting device 2 includes an inner groove 22 arranged on the outer wall of the roller shaft 11 and a protrusion 21 arranged on the inner side of the rotating belt 12, and the protrusion 21 can be stuck in the inner groove 22; so that when the roller shaft 11 drives the rotating belt 12 to move, the movement of the protrusion 21 is limited by the inner groove 22, so as to avoid the rotating belt 12 from running off relative to the roller shaft 11 during the transportation of raw materials.

[0042] Furthermore, multiple groups of inner grooves 22 are provided, which are distributed in circles at equal intervals on the outer wall of the roller shaft 11 along the axis of the roller shaft 11; multiple groups of protrusions 21 are provided, and the multiple groups of protrusions 21 are arranged at equal intervals along the transmission direction of the rotating belt 12; the spacing between two adjacent inner grooves 22 is consistent with the spacing between two adjacent protrusions 21, so that in the process of transporting raw materials, multiple protrusions 21 can be stuck in the inner grooves 22 in turn, increasing the contact time between the protrusions 21 and the inner grooves 22, and further preventing the rotating belt 12 from running off relative to the roller shaft 11.

[0043] Furthermore, during the movement of the rotating belt 12, due to external factors, there will be an external force that causes the rotating belt 12 to deviate to one side. Under the action of the inertia of the movement of the rotating belt 12, the protrusion 21 may detach from the inner groove 22, thereby causing the belt to still deviate.

[0044] Therefore, in this embodiment, the projection shape of the protrusion 21 on the rotating belt 12 is V-shaped, and the inner groove 22 is also V-shaped, so that even if there is an external force driving the rotating belt 12 to deviate to one side, one of the edges of the V-shaped structure in the opposite direction of the external force will offset the external force, thereby preventing the entire rotating belt 12 from deviating.

[0045] Furthermore, the spacing between two adjacent protrusions 21 is such that there is an overlapping portion between the two ends of one of the protrusions 21 and the middle position of the other protrusion 21 along the transmission direction of the rotating belt 12, so that in the process of transporting raw materials, there is always a group of partial structures of the protrusions 21 that can be stuck in the inner groove 22 to offset the influence of the external force that can drive the rotating belt 12 to deviate to one side on the rotating belt 12.

[0046] In this embodiment, an embodiment of the tensioning mechanism 3 is also provided, such as Figure 4 As shown:

[0047] The tensioning mechanism 3 is arranged below the belt scale 1; the tensioning mechanism 3 includes a spring telescopic rod 31 and a roller 32, the roller 32 is arranged on a mounting seat 33 so that the roller 32 can be rotated, and the mounting seat 33 is arranged at the movable end of the spring telescopic rod 31.

[0048] A base 34 is arranged at a middle position below the belt scale 1 along the transmission direction of the rotating belt 12. The base 34 is fixed relative to the ground. A spring telescopic rod 31 is arranged vertically upward on the base 34 so that the roller 32 can contact the outer side of the belt located below the rotating belt 12, and the spring telescopic rod 31 is in a retracted state.

[0049] The revolving belt 12 is always under tension under the action of the elastic force generated by the spring telescopic rod 31, so that the inner side of the revolving belt 12 always keeps in contact with the roller 11, that is, the protrusion 21 is prevented from escaping from the inner groove 22, and there is always friction between the inner side of the revolving belt 12 and the roller 11, so that the roller 11 can drive the revolving belt 12 to move.

[0050] At the same time, under normal conditions, the rotating belt 12 is in a taut state relative to the roller 11. The two ends of the rotating belt 12 are subjected to outward pulling force under the action of the rollers 11 at both ends, and the roller 32 applies inward pressure to the rotating belt 12, which can offset and compensate for the force on the rotating belt 12, thereby preventing the rotating belt 12 from losing its own elasticity under the continuous pulling force of the roller 11.

[0051] At the same time, the tension of the rotating belt 12 will generate a component force when the belt scale 1 is weighing, and this component force is an important factor causing weighing errors; the tension of the rotating belt 12 will generate a vertical force when there is material on the belt, and this vertical force will affect the gravity of the material on the belt. Therefore, the tension change of the rotating belt 12 is compensated by the tensioning mechanism 3 to avoid the influence of the tension change of the rotating belt 12 on the weighing of the belt scale 1.

[0052] Furthermore, in this embodiment, if the material is unevenly distributed on the surface of the rotating belt 12, the following problems may occur:

[0053] 1) It will cause the measurement accuracy of the belt scale 1 to decrease; because the belt scale 1 calculates the mass flow rate of the material based on the weight and speed of the material on the belt. If the material is unevenly distributed, it will cause uneven force on the weighing sensor, and the measured weight of the raw material will deviate from the actual weight.

[0054] 2) It will cause changes in belt tension. Changes in belt tension will directly affect the force on the weighing sensor, thereby affecting the accuracy of weighing.

[0055] 3) It will cause the local wear of the belt to increase, affecting the service life of the belt.

[0056] Therefore, this embodiment provides the following examples, such as Figure 5 and Figure 6 As shown:

[0057] A gantry 41 is arranged upwardly on the rear of the feed port of the belt scale 1 along the transmission direction of the rotating belt 12, and a first electric telescopic rod 42 is vertically downwardly arranged on the gantry 41. A limit piece 43 is arranged at the movable end of the first electric telescopic rod 42. The limit piece 43 is used to limit the height of the raw material on the rotating belt 12 so that the raw material can be flattened on the rotating belt 12.

[0058] Furthermore, the weighing sensor of the belt scale 1 is located at the exit of the belt scale 1 , so the external force exerted by the limiter 43 on the raw material will not affect the weighing of the weighing sensor.

[0059] Furthermore, the limiting member 43 includes a first limiting plate 44 and a second limiting plate 45, the first limiting plate 44 and the second limiting plate 45 form an angle, the first limiting plate 44 is arranged at the movable end of the first electric telescopic rod 42, and the first limiting plate 44 is arranged parallel to the rotating belt 12, and the second limiting plate 45 is inclined upward relative to the rotating belt 12.

[0060] The space between the second limiting plate 45 and the revolving belt 12 can be used to temporarily store the raw materials while the first limiting plate 44 is flattening the raw materials, so as to prevent the raw materials from crossing the entire limiting member 43 .

[0061] Furthermore, the first limit plate 44 and the second limit plate 45 are hinged, and a second electric telescopic rod 46 is provided between the first electric telescopic rod 42 and the second limit plate 45. Both ends of the second electric telescopic rod 46 are respectively hinged to the fixed end of the first electric telescopic rod 42 and the second limit plate 45.

[0062] Furthermore, a bracket 47 is horizontally arranged at the fixed end of the first electric telescopic rod 42 toward the feeding port of the belt scale 1, and both ends of the second electric telescopic rod 46 are hinged to the bracket 47 and the second limit plate 45 respectively.

[0063] In the process of flattening the raw materials, the first electric telescopic rod 42 will periodically shorten in the vertical direction, driving the first limit plate 44 to move upward; at the same time, the second electric telescopic rod 46 will extend to drive the second limit plate 45 to rotate downward, so that the second limit plate 45 makes a finger-bending movement to apply an extrusion force to the raw materials in the transmission direction of the rotary belt 12, so that the raw materials accumulated due to the restriction of the first limit plate 44 can quickly pass through the first limit plate 44. At the same time, the first limit plate 44 can still flatten the raw materials during this process.

[0064] Further, such as Figure 1 and Figure 2 As shown, the belt scale 1 is provided with a scraper 51 at the unloading port of the belt scale 1, and the scraper 51 is arranged parallel to the roller 11; a brush 52 is provided on the edge of the scraper 51 facing the rotating belt 12, and the brush 52 is in contact with the rotating belt 12; the raw materials adhering to the rotating belt 12 can be separated from the rotating belt 12 to avoid excessive raw materials adhering to the rotating belt 12 and affecting the weighing accuracy; at the same time, the scraper 51 is arranged to be inclined downward, and can also serve as a unloading chute.

[0065] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A gypsum board raw material conveying device, characterized in that: include: A belt scale (1), used for transporting raw materials and weighing the raw materials; A limit device (2) is arranged at the rollers (11) at both ends of the belt scale (1) to limit the deviation of the rotating belt (12) of the belt scale (1) during the transportation of raw materials; The tensioning mechanism (3) is arranged inside or outside the belt scale (1) and is used to apply external force to the rotating belt (12) so that the rotating belt (12) maintains a constant tension relative to the roller (11), thereby ensuring that the limiting device (2) can always limit the rotating belt (12).

2. The gypsum board raw material conveying device according to claim 1, characterized in that: The limiting device (2) comprises an inner groove (22) arranged on the outer wall of the roller shaft (11) and a protrusion (21) arranged on the inner side of the rotating belt (12); the protrusion (21) can be stuck in the inner groove (22) to limit the deviation of the rotating belt (12) during the process of transporting raw materials.

3. The gypsum board raw material conveying device according to claim 2, characterized in that: The inner grooves (22) are provided in a plurality of groups and are circumferentially distributed at equal intervals on the outer wall of the roller shaft (11) along the axis of the roller shaft (11); the convex blocks (21) are provided in a plurality of groups and are arranged at equal intervals along the transmission direction of the rotating belt (12); The distance between two adjacent inner grooves (22) is consistent with the distance between two adjacent protrusions (21), so that during the process of transporting raw materials, a plurality of protrusions (21) can be sequentially stuck in the inner grooves (22).

4. The gypsum board raw material conveying device according to claim 3, characterized in that: The projection shape of the protrusion (21) on the rotating belt (12) is V-shaped, and the inner groove (22) is also V-shaped; Furthermore, the spacing between two adjacent protrusions (21) is such that the two ends of one of the protrusions (21) and the middle of the other protrusion (21) have overlapping parts along the transmission direction of the revolving belt (12), so that during the process of transporting raw materials, a group of partial structures of the protrusions (21) can always be stuck in the inner groove (22).

5. The gypsum board raw material conveying device according to claim 1 or 4, characterized in that: The tensioning mechanism (3) comprises a spring telescopic rod (31) and a roller (32), wherein the roller (32) is arranged on a mounting seat (33) so that the roller (32) can be rotated, and the mounting seat (33) is arranged at the movable end of the spring telescopic rod (31); A base (34) is arranged at a middle position on the outside of the belt scale (1) along the transmission direction of the rotating belt (12), and the spring telescopic rod (31) is arranged vertically upward on the base (34), so that the roller (32) can contact the outer side of the belt located below the rotating belt (12), and the spring telescopic rod (31) is in a retracted state.

6. The gypsum board raw material conveying device according to claim 5, characterized in that: The belt scale (1) is provided with a gantry (41) pointing upwards behind the feed port of the belt scale (1) along the transmission direction of the revolving belt (12); a first electric telescopic rod (42) is vertically downwards provided on the gantry (41); a limit piece (43) is provided at the movable end of the first electric telescopic rod (42); and the limit piece (43) is used to limit the thickness of the raw material on the revolving belt (12), so that the raw material can be flattened on the revolving belt (12).

7. The gypsum board raw material conveying device according to claim 6, characterized in that: The limiting member (43) comprises a first limiting plate (44) and a second limiting plate (45), wherein the first limiting plate (44) and the second limiting plate (45) form an angle, the first limiting plate (44) is arranged at the movable end of the first electric telescopic rod (42), and the first limiting plate (44) is arranged parallel to the revolving belt (12), and the second limiting plate (45) is inclined upward relative to the revolving belt (12).

8. The gypsum board raw material conveying device according to claim 7, characterized in that: The first limit plate (44) and the second limit plate (45) are hinged, a second electric telescopic rod (46) is provided between the first electric telescopic rod (42) and the second limit plate (45), and two ends of the second electric telescopic rod (46) are respectively hinged to the first electric telescopic rod (42) and the second limit plate (45); the second limit plate (45) is driven to rotate downward by the extension and retraction of the second electric telescopic rod (46) so as to apply a squeezing force on the raw material in the transmission direction of the revolving belt (12).

9. The gypsum board raw material conveying device according to claim 1 or 8, characterized in that: The belt scale (1) is provided with a scraper (51) at the unloading port of the belt scale (1), and the scraper (51) is arranged parallel to the roller (11); the scraper (51) is provided with a brush (52) on the edge facing the revolving belt (12), and the brush (52) is in contact with the revolving belt (12).

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