Adjustable constant-tension belt sander

Abstract

An adjustable constant-tension abrasive belt polishing machine is characterized in that a tension roller shaft is arranged in a tension roller, the tension roller shaft is an eccentric shaft, the eccentric shaft is provided with an eccentric axis and a rotation axis, a balance block is installed on the eccentric axis of the tension roller shaft, and the mass center of the tension roller is balanced on the eccentric axis of the tension roller shaft through the balance block; a tensioning swing arm is arranged at an eccentric shaft of the tensioning roll shaft, and two arms are arranged on the tensioning swing arm and are respectively provided with a hinge seat and a roller; the hinge seat is hinged with one end of a mandrel, and the other end of the mandrel is inserted into a connecting seat which is fixed on the rotating large disc; a lead screw is welded to one end of the mandrel and provided with a nut and a baffle. The tensioning spring is sleeved on the mandrel after being pre-compressed, one end of the tensioning spring is contacted with the baffle plate, and the other end of the tensioning spring is contacted with the connecting seat. According to the utility model, the influence of centrifugal force on the tensioning force of the abrasive belt is completely eliminated, the surface quality of the ground wire is uniform and stable, and the device is suitable for the production of high-end or special wires with higher requirements on the surface quality of the wires.

Description

Technical Field

[0001] This utility model relates to the field of welding wire production, specifically to an adjustable constant tension belt polishing machine. Background Technology

[0002] During the wire production process, a dense oxide layer forms on the surface of the metal wire due to oxidation. Currently, the equipment used to remove oxide scale is mainly a combination of a stripping machine and a belt polishing machine. The stripping machine bends the wire through multiple sets of stripping wheels to remove large pieces of oxide scale. Then, the belt polishing machine uses a high-speed rotating disc to generate centrifugal force to tighten the belt and polish the surface of the wire to completely remove the oxide scale and polish the wire surface.

[0003] However, during the high-speed rotation of the belt polisher, a large centrifugal force is generated, and the weight of the tension roller itself has a significant impact on the tension of the belt. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to eliminate the influence of centrifugal force on the tension of the sanding belt, and to provide an adjustable constant tension sanding belt polishing machine.

[0005] An adjustable constant tension belt polishing machine includes an active roller and a tension roller located on the rotating disc of the belt polisher. The tension roller has a tension roller shaft, which is an eccentric shaft. The eccentric shaft has an eccentric axis and a rotation axis. A balance block is installed on the eccentric axis of the tension roller shaft. The balance block balances the center of mass of the tension roller on the eccentric axis of the tension roller shaft.

[0006] A tensioning swing arm is installed at the eccentric shaft of the tensioning roller. Two arms are set on the tensioning swing arm, and a hinge seat and a roller are installed on them respectively.

[0007] The hinge seat is hinged to one end of the spindle, and the other end of the spindle is inserted into the connecting seat, which is fixed on the rotating disk. A lead screw is welded to one end of the spindle, and a nut and a baffle are provided on the lead screw. The tension spring is pre-compressed and then sleeved on the spindle, with one end of the tension spring contacting the baffle and the other end of the tension spring contacting the connecting seat.

[0008] A support base is installed on the frame, and a belt-changing top-moving cylinder is installed on the support base.

[0009] The balance weights are balance irons.

[0010] The hinge seat has a long slot and is fixed to the tensioning arm with screws.

[0011] The present invention, which adopts the above technical solution, has the following beneficial effects: it completely eliminates the influence of centrifugal force on the tension of the sanding belt, and the surface quality of the sanded wire is uniform and stable, making it suitable for the production of high-end or special wires with high requirements for the surface quality of the wire; in addition, the present invention is equipped with a cylinder-driven belt changer, which reduces labor intensity. Attached Figure Description

[0012] Figure 1 A front view of the rotating disc of an adjustable constant tension belt sander;

[0013] Figure 2 A side view of the rotating disc of an adjustable constant tension belt sander;

[0014] Figure 3 This is a diagram showing the state when the top-mounted cylinder is not extended.

[0015] Figure 4 This is a diagram showing the state when the top-mounted cylinder extends. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an adjustable constant tension belt polishing machine includes a drive roller 2 and a tension roller 3 located on the rotating disc 1 of the belt polisher. A pulley is installed at one end of the drive roller 2, which is driven to rotate by a motor via belt transmission. The tension roller 3 contains bearings and a tension roller shaft 4, which is an eccentric shaft with an eccentric axis 41 and a rotation axis 42. The tension roller 3 rotates around the rotation axis 42. When the sanding belt 16 needs to be replaced, the tension roller 3, together with the tension roller shaft 4, rotates around the eccentric axis 41 by a certain angle, shortening the distance between the tension roller 3 and the drive roller 2. After installing the sanding belt 16, it rotates back around the eccentric axis 41 to tension the sanding belt 16. This is the prior art.

[0018] The specific structure of this utility model is as follows:

[0019] A balance iron 14 is installed on the eccentric axis of the tension roller 4 to balance the center of mass of the tension roller 3 on the eccentric axis 41 of the tension roller 4.

[0020] A tensioning swing arm 5 is installed at the eccentric shaft of the tensioning roller shaft 4 and connected by a flat key. Two arms are provided on the tensioning swing arm 5, with a hinge seat 6 and a roller 15 installed on each arm respectively. The hinge seat 6 has a long groove and is fixed to the tensioning swing arm 5 with screws. The hinge seat 6 can move along the long groove to adjust the lever arm size, thereby adjusting the tension of the tensioning roller 3 on the sanding belt.

[0021] The hinge seat 6 is hinged to one end of the spindle 7 via a pin. The other end of the spindle 7 is inserted into an 8L-shaped connecting seat 18, which is fixed to the rotating disc 1. A lead screw is welded to one end of the spindle 7, and a nut 9 and a baffle 10 are provided on the lead screw. The tension spring 11 is pre-compressed and fitted onto the spindle 7. One end of the tension spring 11 contacts the baffle 10, and the other end contacts the 8L-shaped connecting seat 18. By adjusting the position of the nut 9 on the spindle 7, the compression of the tension spring 11 can be adjusted, thereby adjusting the tension of the tension roller 3 on the sanding belt 16.

[0022] A support base 12 is installed on the frame, and a belt-changing top-moving cylinder 13 is installed on the support base 12.

[0023] The working principle of this utility model is as follows:

[0024] Before the belt sander starts working, see Figure 3 When the sanding belt needs to be installed or replaced, the belt replacement jacking cylinder 13 extends, jacking the tensioning swing arm 5 to rotate around the eccentric axis 41, compressing the tensioning spring 11, and driving the tensioning roller 3 to rotate closer to the drive roller 2, so as to facilitate the replacement of the sanding belt 16.

[0025] After replacing the sanding belt 16, the belt replacement cylinder 13 retracts, and the tensioning arm 5 resets under the action of the tensioning spring 11, thus tensioning the sanding belt 16. (See...) Figure 4 .

[0026] At this point, because the center of mass of the tension roller 3 is balanced on the eccentric axis 41, the tension force of the tension roller 3 on the sanding belt is not affected by the rotation speed of the rotating disc 1 of the belt sander. By adjusting the position of the hinge seat 6, the lever arm is controlled, and by adjusting the position of the nut 9, the compression of the tension spring 11 is adjusted. Thus, a suitable tension force can be selected for wires 17 of different materials and with different degrees of corrosion. After adjustment, the adjustment mechanism is locked to achieve constant tension operation of the belt sander.

[0027] Thus, this invention uses an energy storage mechanism such as a spring or gas spring to tension the sanding belt 16 by supporting the tensioning roller 3 through the tensioning arm 5. At the same time, the tensioning roller 3 is balanced on the axis of rotation 42 by the balance iron 14, eliminating the influence of centrifugal force and the weight of the tensioning roller 3 on the tension of the sanding belt, thereby ensuring that the clamping force at the contact point between the sanding belt 16 and the surface of the wire 17 is consistent, the degree of polishing is uniform, and the surface quality of the wire 17 is stable.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable constant tension belt polishing machine, comprising a drive roller (2) and a tension roller (3) located on a rotating disc (1) of the belt polisher, wherein a tension roller shaft (4) is provided in the tension roller (3), the tension roller shaft (4) is an eccentric shaft, and the eccentric shaft is provided with an eccentric axis (41) and a rotation axis (42), characterized in that: A balance block is installed on the eccentric axis of the tension roller shaft (4). The balance block balances the center of mass of the tension roller (3) on the eccentric axis (41) of the tension roller shaft (4). A tensioning swing arm (5) is installed at the eccentric shaft of the tensioning roller shaft (4). Two arms are set on the tensioning swing arm (5), and a hinge seat (6) and a roller (15) are installed on them respectively. The hinge seat (6) is hinged to one end of the spindle (7), and the other end of the spindle (7) is inserted into the connecting seat, which is fixed on the rotating disk (1). A lead screw is welded to one end of the spindle (7), and a nut (9) and a baffle (10) are provided on the lead screw. The tension spring (11) is pre-compressed and sleeved on the spindle (7). One end of the tension spring (11) contacts the baffle (10), and the other end of the tension spring (11) contacts the connecting seat. A support base (12) is provided on the frame, and a belt-changing top-moving cylinder (13) is installed on the support base (12).

2. The adjustable constant tension belt polishing machine according to claim 1, characterized in that: The balance weight is a balance iron (14).

3. The adjustable constant tension belt polishing machine according to claim 1, characterized in that: A long groove is provided on the hinge seat (6), which is fixed to the tensioning swing arm (5) by screws.

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