Grinding machine tensioning wheel

Abstract

The grinding machine tensioning wheel comprises a tensioning wheel body and an adjusting rod, the tensioning wheel body comprises a base, a plurality of tensioning pieces, a first wedge block and a second wedge block, the first wedge block comprises a base and a sliding block, and an adjusting pressing rod of the adjusting rod is pressed on the sliding block in a specific area so as to adjust the tension of the tensioning pieces in the specific area. Pressure is applied to a sliding block in a specific area through an adjusting pressing rod so as to increase the tension of a tensioning piece in the specific area of the tensioning wheel, when the grinding machine operates, a belt or a grinding wheel generates counter-acting force on the specific area of the tensioning wheel, and therefore the tension of the tensioning piece in the specific area is reduced. After the tension of the tensioning pieces in the specific area is reduced, the tension of the tensioning pieces in the specific area is equal to the tension of the tensioning pieces in other areas, and therefore the situation that the tension of the tensioning pieces in the specific area is insufficient due to the fact that the tension of the tensioning pieces in the specific area is reduced is avoided, and the transmission efficiency of a transmission belt or the grinding effect of a grinding wheel is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinders, and in particular to a tension wheel of a grinder. Background Art

[0002] The grinder is an indispensable and important equipment in the modern manufacturing and processing industry. It can facet, grind and polish the workpiece, effectively improving the surface finish and processing accuracy of the workpiece. In the operation of the grinder, the tension wheel, as one of the core components, plays a vital role. For example, the motor drives the tension wheel, the tension wheel drives the grinding head to rotate through the belt, or the tension wheel drives the grinding wheel to grind the workpiece. In the existing tension wheel, the arc surfaces of multiple tensioning plates are combined to form the tensioning surface of the tension wheel, and the tensioning force of the tension wheel is adjusted by adjusting the diameter of the tensioning plate. When the grinder is in operation, the belt or the grinding wheel will generate a reaction force on the tension wheel, causing the tensioning plate in a specific area of ​​the tension wheel to be subjected to additional pressure, reducing the radius of the corresponding tensioning plate and reducing the tension of the tension wheel, thereby affecting the transmission efficiency of the transmission belt or the grinding effect of the grinding wheel, so a tension wheel for a grinder is proposed. Summary of the invention

[0003] The object of the present invention is to provide a grinding machine tension wheel to solve the above-mentioned problems.

[0004] To achieve this object, the present invention adopts the following technical solutions: A tension wheel for a grinding machine comprises a tension wheel body and an adjusting rod, wherein one end of the adjusting rod is arranged on the grinding machine body, and the other end is provided with an adjusting pressure rod; The tension wheel body comprises: A base is arranged on one end of the rotating shaft of the grinding machine, and the base has a receiving cavity; A plurality of tensioning sheets are arranged on the outer peripheral surface of the base; A first wedge block and a second wedge block with an inclined contact surface are arranged on the accommodating cavity, the second wedge block is arranged on the side of the first wedge block, the second wedge block is connected to the tensioning sheet through a connecting rod, and when the first wedge block moves axially, the second wedge block is driven to move radially; Wherein, the first wedge block includes a base and a sliding block arranged on the side of the base, and the adjusting pressure rod is pressed on the top surface of the sliding block.

[0005] Optionally, a positioning hole is provided on the base, and a pin passes through the positioning hole to be connected to the base; The base is provided with an adjustment hole, the base is provided with a threaded hole corresponding to the adjustment hole, and the adjustment screw passes through the adjustment hole and is threadedly connected to the base to adjust the movement of the base in the axial direction; The hole axis of the adjusting hole is in the same straight line with the axis of the base, and the hole axis of the threaded hole is in the same straight line with the axis of the base.

[0006] Optionally, a pressing groove is provided on the top surface of the sliding block, and a plurality of sections of the pressing groove form a circular groove, and the adjusting pressing rod is pressed in the pressing groove.

[0007] Optionally, a mounting groove is provided on the side of the base, a first spring is provided on the mounting groove, and a lifting protrusion which can be inserted into the mounting groove is provided on the side of the slider close to the base; A positioning column is provided on the bottom wall of the installation slot, and one end of the first spring is sleeved on the positioning column.

[0008] Optionally, a slide rail is provided on the side of the base, and a slide groove corresponding to the slide rail is provided on a side of the slider close to the base.

[0009] Optionally, a limiting groove is provided on one end of the top surface of the sliding block close to the base, and a limiting outer edge corresponding to the limiting groove is provided on the top surface of the base.

[0010] Optionally, a through hole communicating with the accommodating cavity is provided on a side surface of the base, and the connecting rod passes through the through hole to be connected with the tensioning sheet; A second spring is arranged between the second wedge block and the inner wall of the accommodating cavity, and the connecting rod is sleeved on the second spring.

[0011] Optionally, a dust cover is provided on the base.

[0012] Optionally, the adjustment rod is mounted on the grinding machine body via a mounting plate; The adjusting rod is formed by connecting multiple connecting rods to each other. The connecting rod close to the pressing groove is provided with a penetrating adjusting screw hole. The adjusting pressing rod is a screw rod corresponding to the adjusting screw hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects: by adjusting the pressure rod to apply pressure to the slider on the specific area, the second wedge on the specific area is driven to move radially and away from the axis, at this time, the tension on the tensioning sheet on the specific area is greater than the tension on the tensioning sheet on other areas. When the grinding machine is in operation, the inner side of the belt generates a reaction force on the specific area of ​​the tensioning wheel, or the grinding wheel at the contact point between the grinding wheel and the workpiece generates a reaction force on the specific area of ​​the tensioning wheel, thereby reducing the tension on the tensioning sheet on the specific area; after the tension of the tensioning sheet on the specific area is reduced, its tension is equal to the tension of the tensioning sheet on other areas, thereby avoiding the tension of the tensioning sheet on the specific area being insufficient due to the tension reduction of the tensioning sheet on the specific area, and improving the transmission efficiency of the transmission belt or the grinding effect of the grinding wheel. The tensioning wheel of the grinding machine provided by the present invention can increase the tension of the tensioning plate on a specific area. When the grinding machine is in operation, after the belt or the grinding wheel generates a reaction force on the tensioning wheel, the tensions applied to each tensioning plate remain equal, thus avoiding the tension reduction in a local area of ​​the tensioning wheel, thereby improving the transmission efficiency of the transmission belt or the grinding effect of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0016] Figure 1 It is a schematic diagram of the structure in which the tension wheel of the present invention is installed on a grinding machine; Figure 2 It is a structural schematic diagram of the tension wheel body of the present invention; Figure 3 It is a schematic diagram of the internal structure of the tensioning wheel body of the present invention; Figure 4 An exploded view of the tension wheel body of the present invention; Figure 5 An exploded view of a portion of the structure of the tension wheel body of the present invention; Figure 6It is an exploded view of the first wedge block of the present invention.

[0017] Illustrations: 10. Tensioning wheel body; 11. Base; 111. Through hole; 12. Tensioning plate; 13. First wedge block; 131. Base; 1311. Positioning hole; 1312. Adjusting hole; 1313. Mounting slot; 1314. Positioning column; 1315. Slide rail; 1316. Limiting outer edge; 132. Slider; 1321. Pressing groove; 1322. Lifting protrusion; 1323. Slide groove; 1324. Limiting groove; 133. First spring; 14. Second wedge block; 15. Connecting rod; 16. Pin; 17. Adjusting screw; 18. Second spring; 19. Dust cover; 20. Adjusting rod; 21. Adjusting pressure rod; 22. Mounting plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0021] Reference Figures 1 to 6The embodiment of the present invention provides a tension wheel for a grinding machine, which is mounted on the rotating shaft of a driving motor of the grinding machine, and drives the grinding head to rotate through a belt, or the tension wheel drives the grinding wheel to grind the workpiece. The tension wheel includes a tension wheel body 10 and an adjustment rod 20. The tension wheel body 10 is fixed on the rotating shaft of the grinding machine, and when the rotating shaft of the grinding machine rotates, the tension wheel body 10 is driven to rotate. One end of the adjustment rod 20 is fixed on the grinding machine, and the adjustment rod 20 includes an adjustment pressure rod 21, and the adjustment pressure rod 21 applies pressure to a specific area of ​​the tension wheel body 10. The tension wheel body 10 includes a base 11, a plurality of tensioning sheets 12, a first wedge 13 and a second wedge 14. The base 11 is mounted on one end of the rotating shaft of the grinding machine, and the end of the base 11 away from the rotating shaft has an open accommodating cavity. The cross section of the base 11 is circular, and the tensioning sheet 12 is arranged on the outer peripheral surface of the base 11, and the tensioning sheet 12 can move along the radial direction of the base 11. The outer side surface of the tensioning piece 12 is an arc surface. The number of tensioning pieces 12 in the embodiment of the present invention is six. The outer side surfaces of the plurality of tensioning pieces 12 form an assembled arc surface, and the center of the arc surface is on the axis of the base 11. The first wedge 13 and the second wedge 14 are arranged on the accommodating cavity. The second wedge 14 is arranged on the side of the first wedge 13. The side of the first wedge 13 and the side of the second wedge 14 close to the first wedge 13 are inclined surfaces and fit each other. The cross section of the first wedge 13 in this embodiment is a hexagon, that is, the first wedge 13 has six side surfaces in total. Correspondingly, the number of the second wedge 14 is six, which fit the six side surfaces of the first wedge 13 respectively. The area of ​​the top surface of the first wedge 13 is greater than the area of ​​the bottom surface, that is, the side surface of the first wedge 13 is an inclined surface inclined downward in the axial direction. The axis of the first wedge 13 is in the same straight line as the axis of the base 11, and the first wedge 13 can move up and down along its axis, and the second wedge 14 can move along the radial direction of the base 11. When the first wedge block 13 moves up and down along its axis, the corresponding second wedge block 14 moves along the radial direction of the base 11. The second wedge block 14 is connected to the tensioning sheet 12 through a connecting rod 15. When the second wedge block 14 moves along the radial direction of the base 11, the second wedge block 14 drives the tensioning sheet 12 to move through the connecting rod 15, thereby increasing or decreasing the distance between the tensioning sheet 12 and the axis of the base 11, so as to adjust the tensioning force of the tensioning sheet 12.

[0022] The first wedge block 13 includes a base 131 and a slider 132 disposed on the side of the base 131. The cross section of the base 131 is a hexagon, that is, the base 131 has six sides, and correspondingly, the number of the sliders 132 is six, which fit the six sides of the base 131 respectively. One end of the adjustment rod 20 is disposed on the grinder body, and the other end is provided with an adjustment pressure rod 21. The adjustment pressure rod 21 presses the slider 132 on the specific area to move the slider 132 on the specific area toward the base 11, thereby increasing the tension of the tensioning sheet 12 on the specific area through the connecting rod 15. The specific area described in the embodiment of the present invention is the area where the tensioning sheet 12 is subjected to the reaction force of the product during processing. When the belt or grinding wheel generates a reaction force on a specific area of ​​the tensioning wheel, the reaction force acts on the tensioning sheet 12 in the corresponding area, thereby reducing the tension on the tensioning sheet 12 in the area; after the tension of the tensioning sheet 12 in the specific area is reduced, its tension is equal to the tension of the tensioning sheet 12 in other areas, thereby avoiding the situation where the local tension of the tensioning wheel is insufficient due to the reduction of the tension of the tensioning sheet 12 in the specific area, thereby improving the transmission efficiency of the transmission belt or the grinding effect of the grinding wheel.

[0023] Further, the base 131 is provided with a positioning hole 1311, and the pin 16 passes through the positioning hole 1311 to connect with the base 11. The axis of the pin is parallel to the axis of the base 11, thereby limiting the movement of the base 131 in dimensions other than the axis direction of the base 11, that is, the base 131 can and can only move in the axis direction of the base 11. The side of the base 11 is provided with a through hole 111 connected to the accommodating cavity, and the connecting rod 15 passes through the through hole 111 to connect with the tensioning sheet 12. The hole axis of the through hole 111 is perpendicular to the axis of the base 11, and the hole axis of the through hole 111 intersects with the axis of the base 11. The through hole 111 limits the movement of the connecting rod 15 in dimensions other than the radial direction of the base 11, that is, the connecting rod 15 can and can only move in the radial direction of the base 11. The base 131 is provided with an adjustment hole 1312, and the base 11 is provided with a threaded hole corresponding to the adjustment hole 1312. The adjustment screw 17 passes through the adjustment hole 1312 and is threadedly connected to the base 11 to adjust the axial movement of the base 131. It should be noted that the hole axis of the adjustment hole 1312 is in the same straight line with the axis of the base 131, and the hole axis of the threaded hole is in the same straight line with the axis of the base 11, thereby improving the stability of the tensioning wheel.

[0024] Optionally, a pressing groove 1321 is provided on the top surface of the slider 132, and multiple sections of the pressing groove 1321 form a circular groove, and the adjusting pressing rod 21 is pressed in the pressing groove 1321. The center of the circular groove is on the axis of the base 131, and when the rotating shaft of the grinder drives the tensioning wheel body 10 to rotate, the adjusting pressing rod 21 is always pressed in the pressing groove 1321.

[0025] Furthermore, a second spring 18 is provided between the second wedge block 14 and the inner wall of the accommodating cavity, and the connecting rod 15 is sleeved on the second spring 18. It should be noted that the second spring 18 is always in a compressed state, that is, the spring generates elastic force on the second wedge block 14, so that one side of the second wedge block 14 is closely attached to the side surface of the first wedge block 13. In addition, since the side surface of the first wedge block 13 is an inclined surface inclined downward in the axial direction, the direction of the force exerted by the second wedge block 14 on the first wedge block 13 is inclined upward. Meanwhile, in the embodiment of the present invention, when the first wedge block 13 is adjusted to move downward, the second wedge block 14 moves in a radial direction away from the axis of the base 11, thereby driving the tensioning sheet 12 to move in a radial direction away from the axis of the base 11 through the connecting rod 15 to increase the tension of the tensioning sheet 12; when the first wedge block 13 is adjusted to move upward, the second wedge block 14 moves in a radial direction close to the axis of the base 11, thereby driving the tensioning sheet 12 to move in a radial direction close to the axis of the base 11 through the connecting rod 15 to reduce the tension of the tensioning sheet 12. Optionally, a dust cover plate 19 is provided on the base 11, and the dust cover plate 19 is threadedly connected to the base 11.

[0026] Furthermore, a mounting groove 1313 is provided on the side of the base 131, and a first spring 133 is provided on the mounting groove 1313. A lifting protrusion 1322 that can be inserted into the mounting groove 1313 is provided on the side of the slider 132 close to the base 131. It should be noted that, since the second spring 18 is always in a compressed state, the second wedge block 14 always exerts pressure on the first wedge block 13, thereby causing one side of the slider 132 to always be in close contact with the side of the base 131. In the initial state, the first spring 133 is in a compressed state, that is, the first spring 133 exerts elastic force on the lifting protrusion 1322 to lift the lifting protrusion 1322, thereby lifting the slider 132. A limiting groove 1324 is provided on the top surface of the slider 132 close to the end of the base 131, and a limiting outer edge 1316 corresponding to the limiting groove 1324 is provided on the top surface of the base 131. The depth of the limiting groove 1324 is equal to the thickness of the limiting outer extension. When the slider 132 is lifted to the highest point, the limiting outer extension is inserted into the limiting groove 1324. At this time, the top surface of the base 131 and the top surface of the slider 132 are on the same plane. Optionally, a positioning column 1314 is provided on the bottom wall of the mounting groove 1313, and one end of the first spring 133 is sleeved on the positioning column 1314. The function of the positioning column 1314 is: when the slider 132 is installed on the base 131, the first spring 133 is compressed onto the positioning column 1314 to facilitate the slider 132 to slide onto the base 131; at the same time, the positioning column 1314 can prevent the spring from popping out of the mounting groove 1313. Optionally, a slide rail 1315 is disposed on a side of the base 131 , and a slide groove 1323 corresponding to the slide rail 1315 is disposed on a side of the slider 132 close to the base 131 .

[0027] Through the above-mentioned technical solution, when it is necessary to increase the tension of a single tensioning sheet 12, pressure can be applied to the slider 132 corresponding to the tensioning sheet 12 to make the slider 132 move downward, thereby driving the second wedge block 14, the connecting rod 15 and the tensioning sheet 12 in the corresponding direction to move in a radial direction away from the axis of the base 11, thereby increasing the tension of the tensioning sheet 12 in the corresponding direction.

[0028] Furthermore, the adjusting rod 20 is mounted on the grinding machine body through the mounting plate 22. The adjusting rod 20 is formed by connecting multiple sections of connecting rods, and the connecting rod near the pressure groove 1321 is provided with a penetrating adjusting screw hole. The adjusting pressure rod 21 is a screw rod corresponding to the adjusting screw hole. By twisting the screw rod, the pressure between the adjusting pressure rod 21 and the slider 132 can be adjusted, thereby adjusting the tension of the tensioning sheet 12 in the corresponding direction.

[0029] The embodiment of the present invention discloses a tensioning wheel for a grinding machine, and the specific implementation method is as follows: by adjusting the pressure rod 21 to apply pressure to the slider 132 on the specific area, the second wedge block 14 on the specific area is driven to move radially and away from the axis direction, at this time, the tension on the tensioning sheet 12 on the specific area is greater than the tension on the tensioning sheet 12 on other areas. When the grinding machine is in operation, the inner side of the belt generates a reaction force on the specific area of ​​the tensioning wheel, or the grinding wheel at the contact point between the grinding wheel and the workpiece generates a reaction force on the specific area of ​​the tensioning wheel, thereby reducing the tension on the tensioning sheet 12 on the specific area; after the tension of the tensioning sheet 12 on the specific area is reduced, its tension is equal to the tension of the tensioning sheet 12 on other areas, thereby avoiding the insufficient tension of the tensioning sheet 12 on the specific area due to the reduction of the tension of the tensioning sheet 12 on the specific area, thereby improving the transmission efficiency of the transmission belt or the grinding effect of the grinding wheel. The tensioning wheel of the grinding machine provided by the present invention can increase the tension of the tensioning plate 12 on a specific area. When the grinding machine is in operation, after the belt or the grinding wheel generates a reaction force on the tensioning wheel, the tensions exerted on each tensioning plate 12 remain equal, thus avoiding the tension reduction in a local area of ​​the tensioning wheel, thereby improving the transmission efficiency of the transmission belt or the grinding effect of the grinding wheel.

[0030] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding machine tension wheel, characterized in that: It comprises a tension wheel body (10) and an adjusting rod (20), wherein one end of the adjusting rod (20) is arranged on the grinding machine body, and the other end is provided with an adjusting pressure rod (21); The tension wheel body (10) comprises: A base (11) is arranged on one end of the grinding machine shaft, and the base (11) has a receiving cavity; A plurality of tensioning sheets (12) arranged on the outer peripheral surface of the base (11); A first wedge block (13) and a second wedge block (14) having an inclined contact surface, which are arranged on the accommodating cavity, wherein the second wedge block (14) is arranged on a side surface of the first wedge block (13), and the second wedge block (14) is connected to the tensioning sheet (12) via a connecting rod (15), and when the first wedge block (13) moves axially, the second wedge block (14) is driven to move radially; The first wedge block (13) comprises a base (131) and a sliding block (132) arranged on a side of the base (131), and the adjusting pressure rod (21) is pressed on the top surface of the sliding block (132).

2. The grinding machine tension wheel according to claim 1, characterized in that: The base (131) is provided with a positioning hole (1311), and the pin (16) passes through the positioning hole (1311) and is connected to the base (11); The base (131) is provided with an adjustment hole (1312), the base (11) is provided with a threaded hole corresponding to the adjustment hole (1312), and the adjustment screw (17) passes through the adjustment hole (1312) and is threadedly connected to the base (11) to adjust the movement of the base (131) in the axial direction; The hole axis of the adjustment hole (1312) and the axis of the base (131) are in the same straight line, and the hole axis of the threaded hole and the axis of the base (11) are in the same straight line.

3. The grinding machine tension wheel according to claim 1, characterized in that: A pressing groove (1321) is provided on the top surface of the sliding block (132), and a plurality of sections of the pressing groove (1321) form a circular groove, and the adjusting pressing rod (21) is pressed into the pressing groove (1321).

4. The grinding machine tension wheel according to claim 1, characterized in that: A mounting groove (1313) is provided on the side of the base (131), a first spring (133) is provided on the mounting groove (1313), and a lifting protrusion (1322) which can be inserted into the mounting groove (1313) is provided on the side of the slider (132) close to the base (131); A positioning column (1314) is provided on the bottom wall of the installation groove (1313), and one end of the first spring (133) is sleeved on the positioning column (1314).

5. The grinding machine tension wheel according to claim 4, characterized in that: A slide rail (1315) is provided on the side of the base (131), and a slide groove (1323) corresponding to the slide rail (1315) is provided on the side of the slider (132) close to the base (131).

6. The grinding machine tension wheel according to claim 4, characterized in that: A limiting groove (1324) is provided on one end of the top surface of the sliding block (132) close to the base (131), and a limiting outer edge (1316) corresponding to the limiting groove (1324) is provided on the top surface of the base (131).

7. The grinding machine tension wheel according to claim 1, characterized in that: A through hole (111) communicating with the accommodating cavity is provided on a side surface of the base (11), and the connecting rod (15) passes through the through hole (111) and is connected to the tensioning sheet (12); A second spring (18) is provided between the second wedge block (14) and the inner wall of the accommodating cavity, and the connecting rod (15) is sleeved on the second spring (18).

8. The grinding machine tension wheel according to claim 1, characterized in that: A dustproof cover plate (19) is provided on the base (11).

9. The grinding machine tension wheel according to claim 1, characterized in that: The adjusting rod (20) is mounted on the grinding machine body via a mounting plate (22); The adjusting rod (20) is formed by connecting multiple sections of connecting rods to each other, and a connecting rod close to the pressing groove (1321) is provided with an adjusting screw hole (23) penetrating therethrough, and the adjusting pressing rod (21) is a screw rod corresponding to the adjusting screw hole.

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