Swing arm capable of floating up and down and working method

Abstract

The invention relates to an up-down floating swing arm and a working method, and belongs to the field of grinding equipment. The polishing device comprises a swing arm base and is characterized by further comprising a swing arm mechanism which makes contact with an abrasive belt and plays a role in supporting a workpiece in the polishing process and a floating mechanism which applies supporting force to the swing arm mechanism when the workpiece makes contact with the abrasive belt on the outer side of the swing arm mechanism, and the floating mechanism and the swing arm mechanism are both installed on the swing arm base. The floating mechanism is arranged on the swing arm base and matched with the swing arm mechanism, the swing arm mechanism comprises a swing arm body, a swing arm rotating shaft, a swing arm limiting seat, a supporting shaft and a supporting wheel, the swing arm body is installed on the swing arm base through the swing arm rotating shaft, the swing arm limiting seat is installed at one end of the swing arm body, and the supporting wheel is installed at the other end of the swing arm body through the supporting shaft.

Description

Technical Field

[0001] The invention relates to an up-and-down floating swing arm and a working method, and belongs to the field of grinding equipment. Background Art

[0002] After the workpiece is processed, a robot is required to hold the workpiece and place it on the belt sander for grinding. The support wheel installed on the belt sander can be used to tighten the belt. At the same time, it can also provide support force when the workpiece contacts the belt on the outside of the support wheel during the grinding process. The current support wheel can only float in one direction. In view of this, a constant force unidirectional adjustment floating unit and a working method are disclosed in the patent document with application number 202311175141.2. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide an up-and-down floating swing arm with a reasonable structural design and a working method.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the up and down floating swing arm includes a swing arm base, which is characterized in that it also includes a swing arm mechanism that contacts the sand belt and supports the workpiece during the grinding process, and a floating mechanism that applies a supporting force to the swing arm mechanism when the workpiece contacts the sand belt on the outside of the swing arm mechanism. The floating mechanism and the swing arm mechanism are both installed on the swing arm base, and the floating mechanism cooperates with the swing arm mechanism.

[0005] Furthermore, the swing arm mechanism includes a swing arm body, a swing arm rotating shaft, a swing arm limit seat, a support shaft and a support wheel. The swing arm body is installed on the swing arm base through the swing arm rotating shaft, the swing arm limit seat is installed at one end of the swing arm body, and the support wheel is installed at the other end of the swing arm body through the support shaft.

[0006] Furthermore, the floating mechanism includes a floating push rod and a floating limit seat, the floating push rod is installed on the swing arm base, the floating limit seat is installed on one end of the floating push rod, and the floating limit seat cooperates with the swing arm limit seat, and the other end of the floating push rod cooperates with the force applying mechanism.

[0007] Furthermore, a floating limiting wheel is installed on the floating limiting seat, a swing arm limiting groove is provided on the swing arm limiting seat, and the floating limiting wheel is located in the swing arm limiting groove.

[0008] Furthermore, the force applying mechanism includes a floating push rod, a floating shaft and a floating roller. The floating push rod is installed on the swing arm base through the floating shaft. The floating roller is installed at the lower end of the floating push rod, and the floating roller cooperates with the other end of the floating push rod.

[0009] Furthermore, the upper end of the floating push rod contacts the piston rod of the floating cylinder, and the cylinder barrel of the floating cylinder is arranged on the swing arm base.

[0010] Furthermore, two guide wheels are installed on the swing arm base, and the supporting wheel is located between the two guide wheels.

[0011] Furthermore, the swing arm base is installed on a belt sander.

[0012] Furthermore, the abrasive belt passes around a supporting wheel and two guide wheels.

[0013] Furthermore, when the workpiece contacts the lower part of the sand belt outside the support wheel, the swing arm body swings upward; when the workpiece contacts the upper part of the sand belt outside the support wheel, the swing arm body swings downward.

[0014] Furthermore, another technical purpose of the present invention is to provide a working method of an up and down floating swing arm.

[0015] The above technical objectives of the present invention are achieved through the following technical solutions.

[0016] A working method of an up-and-down floating swing arm, characterized in that: the working method is as follows: when a workpiece contacts the lower part of the sanding belt outside the support wheel, the workpiece pushes the support wheel upward, so that the swing arm body swings along the swing arm rotating shaft, the swing arm limit seat pushes the floating limit seat and the floating push rod backward, and the floating push rod pushes the lower end of the floating push rod to swing along the floating rotating shaft. In this state, the upper end of the floating push rod is pushed by the floating cylinder to swing along the floating rotating shaft, thereby achieving a force balance state; When the workpiece contacts the upper part of the sanding belt outside the support wheel, the workpiece pushes the support wheel downward, causing the swing arm body to swing along the swing arm shaft, and the swing arm limit seat pushes the floating limit seat and the floating push rod backward. The floating push rod pushes the lower end of the floating push rod to swing along the floating shaft. In this state, the floating cylinder pushes the upper end of the floating push rod to swing along the floating shaft, thereby achieving a force balance state.

[0017] Furthermore, in the initial state, the supporting wheel tightens the abrasive belt, and the swing arm body is in a horizontal state under the action of the floating cylinder.

[0018] Compared with the prior art, the present invention has the following advantages: when the robot holds the workpiece for grinding, the workpiece can contact the upper or lower part of the sanding belt on the outer side of the support wheel, so that the up and down floating swing arm can swing upward and downward during the working process, so as to realize the grinding of the workpiece at multiple angles. During the swinging process, the floating push rod can be pushed by the floating cylinder, and then the floating push rod can be pushed to achieve force balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional structure diagram of the up and down floating swing arm (in the initial state) of an embodiment of the present invention.

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the up and down floating swing arm (in the upward swinging state) according to an embodiment of the present invention.

[0021] Figure 3 It is a schematic cross-sectional structure diagram of the up and down floating swing arm (in the downward swinging state) of an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the upper and lower floating swing arm in use state according to an embodiment of the present invention.

[0023] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of part A in FIG.

[0024] Figure 6 It is a schematic diagram of the structure of the upper and lower floating swing arm in use state according to an embodiment of the present invention.

[0025] In the figure: swing arm base 1, floating mechanism 2, swing arm mechanism 3, sanding belt 4, Guide wheel 11, Floating cylinder 21, floating push rod 22, floating shaft 23, floating roller 24, floating push rod 25, floating limit seat 26, floating limit wheel 27, The swing arm body 31 , the swing arm rotating shaft 32 , the swing arm limiting seat 33 , the swing arm limiting groove 34 , the support shaft 35 , and the support wheel 36 . DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0027] Example

[0028] See also Figures 1 to 6 As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0029] The up and down floating swing arm in this embodiment includes a swing arm base 1, a swing arm mechanism 3 that contacts the sanding belt 4 and supports the workpiece during the grinding process, and a floating mechanism 2 that applies a supporting force to the swing arm mechanism 3 when the workpiece contacts the sanding belt 4 outside the swing arm mechanism 3 during the grinding process. The floating mechanism 2 and the swing arm mechanism 3 are both installed on the swing arm base 1, and the floating mechanism 2 cooperates with the swing arm mechanism 3.

[0030] The swing arm mechanism 3 in this embodiment includes a swing arm body 31, a swing arm rotating shaft 32, a swing arm limit seat 33, a support shaft 35 and a support wheel 36. The swing arm body 31 is installed on the swing arm base 1 through the swing arm rotating shaft 32, the swing arm limit seat 33 is installed at one end of the swing arm body 31, and the support wheel 36 is installed at the other end of the swing arm body 31 through the support shaft 35.

[0031] The floating mechanism 2 in this embodiment includes a floating push rod 25 and a floating limit seat 26. The floating push rod 25 is installed on the swing arm base 1. The floating limit seat 26 is installed at one end of the floating push rod 25, and the floating limit seat 26 cooperates with the swing arm limit seat 33. The other end of the floating push rod 25 cooperates with the force applying mechanism. A floating limit wheel 27 is installed on the floating limit seat 26. A swing arm limit groove 34 is provided on the swing arm limit seat 33. The floating limit wheel 27 is located in the swing arm limit groove 34.

[0032] The force-applying mechanism in this embodiment includes a floating push rod 22, a floating rotating shaft 23 and a floating roller 24. The floating push rod 22 is installed on the swing arm base 1 through the floating rotating shaft 23. The floating roller 24 is installed on the lower end of the floating push rod 22, and the floating roller 24 cooperates with the other end of the floating push rod 25. The upper end of the floating push rod 22 contacts the piston rod of the floating cylinder 21, and the cylinder barrel of the floating cylinder 21 is set on the swing arm base 1.

[0033] The swing arm base 1 in this embodiment is installed on the belt sander. Two guide wheels 11 are installed on the swing arm base 1. The support wheel 36 is located between the two guide wheels 11. The sanding belt 4 passes around the support wheel 36 and the two guide wheels 11.

[0034] In this embodiment, when the workpiece contacts the lower part of the abrasive belt 4 outside the support wheel 36, the swing arm body 31 swings upward; when the workpiece contacts the upper part of the abrasive belt 4 outside the support wheel 36, the swing arm body 31 swings downward.

[0035] The working method of the up and down floating swing arm in this embodiment is as follows: in the initial state (such as Figure 1As shown in the figure), the supporting wheel 36 tightens the sanding belt 4, and under the action of the floating cylinder 21, the floating push rod 22 is pushed by the floating cylinder 21 to swing along the floating rotating shaft 23, so that the floating roller 24 pushes the floating push rod 25, and the floating limit wheel 27 on the floating limit seat 26 is driven by the floating push rod 25 to push the swing arm limit seat 33, so that the swing arm body 31 is in a horizontal state.

[0036] When the workpiece contacts the lower portion of the abrasive belt 4 outside the support wheel 36 (eg Figure 2 As shown), at this time, the workpiece pushes the supporting wheel 36 upward, so that the swing arm body 31 swings along the swing arm shaft 32. Due to the swing of the swing arm body 31, the swing arm limit seat 33 can push the floating limit seat 26 backward. At the same time, the floating limit wheel 27 slides in the swing arm limit groove 34, and then can contact the floating roller 24 through the floating push rod 25, and push the floating push rod 22 to swing along the floating shaft 23. In this state, the floating push rod 22 is pushed by the floating cylinder 21 to swing along the floating shaft 23, and then a force balance state can be achieved.

[0037] When the workpiece contacts the upper portion of the abrasive belt 4 outside the support wheel 36 (e.g. Figure 3 As shown), at this time, the workpiece pushes the supporting wheel 36 downward, causing the swing arm body 31 to swing along the swing arm shaft 32. Due to the swinging of the swing arm body 31, the swing arm limit seat 33 can push the floating limit seat 26 backward. At the same time, the floating limit wheel 27 slides in the swing arm limit groove 34, and then can contact the floating roller 24 through the floating push rod 25, and push the floating push rod 22 to swing along the floating shaft 23. In this state, the floating push rod 22 is pushed by the floating cylinder 21 to swing along the floating shaft 23, and then a force balance state can be achieved.

[0038] Specifically, the up and down floating swing arm is installed on the belt sander, and the sanding belt 4 is passed around the driving wheel, two guide wheels 11 and the support wheel 36 of the belt sander. In the initial state, the swing arm body 31 is in a horizontal state. When the robot holds the workpiece and uses the belt sander to grind the workpiece, the workpiece contacts the sanding belt 4 on the outside of the support wheel 36. When the workpiece contacts the lower or upper part of the sanding belt 4 on the outside of the support wheel 36 (during the grinding process), the swing arm body 31 will be tilted, and the floating limit seat 26 and the floating push rod 25 will be pushed backward through the swing arm limit seat 33, so that the floating push rod 25 contacts the floating roller 24, and the floating push rod 22 is pushed by the floating push rod 25 to swing along the floating rotating shaft 23. At this time, the supporting force provided by the floating push rod 22 can be pushed by the floating cylinder 21 to be equal to the contact force generated when the workpiece contacts the support wheel 36, so as to achieve a force balance state and avoid overcutting of the workpiece.

[0039] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. An up-and-down floating swing arm, comprising a swing arm base (1), characterized in that: It also includes a swing arm mechanism (3) that contacts the sanding belt (4) and supports the workpiece during the grinding process, and a floating mechanism (2) that applies a supporting force to the swing arm mechanism (3) when the workpiece contacts the sanding belt (4) outside the swing arm mechanism (3), wherein the floating mechanism (2) and the swing arm mechanism (3) are both mounted on the swing arm base (1), and the floating mechanism (2) cooperates with the swing arm mechanism (3); The swing arm mechanism (3) comprises a swing arm body (31), a swing arm rotating shaft (32), a swing arm limiting seat (33), a support shaft (35) and a support wheel (36); the swing arm body (31) is mounted on the swing arm base (1) via the swing arm rotating shaft (32); the swing arm limiting seat (33) is mounted on one end of the swing arm body (31); and the support wheel (36) is mounted on the other end of the swing arm body (31) via the support shaft (35); The floating mechanism (2) comprises a floating push rod (25) and a floating limit seat (26); the floating push rod (25) is mounted on the swing arm base (1); the floating limit seat (26) is mounted on one end of the floating push rod (25); the floating limit seat (26) cooperates with the swing arm limit seat (33); and the other end of the floating push rod (25) cooperates with a force application mechanism.

2. The up and down floating swing arm according to claim 1, characterized in that: A floating limiting wheel (27) is mounted on the floating limiting seat (26), a swing arm limiting groove (34) is provided on the swing arm limiting seat (33), and the floating limiting wheel (27) is located in the swing arm limiting groove (34).

3. The up and down floating swing arm according to claim 1, characterized in that: The force applying mechanism comprises a floating push rod (22), a floating rotating shaft (23) and a floating roller (24); the floating push rod (22) is mounted on the swing arm base (1) via the floating rotating shaft (23); the floating roller (24) is mounted on the lower end of the floating push rod (22), and the floating roller (24) cooperates with the other end of the floating push rod (25).

4. The up and down floating swing arm according to claim 3, characterized in that: The upper end of the floating push rod (22) contacts the piston rod of the floating cylinder (21), and the cylinder barrel of the floating cylinder (21) is arranged on the swing arm base (1).

5. The up and down floating swing arm according to claim 1, characterized in that: Two guide wheels (11) are mounted on the swing arm base (1), and the support wheel (36) is located between the two guide wheels (11).

6. The up and down floating swing arm according to claim 1, characterized in that: The swing arm base (1) is mounted on a belt sander.

7. The up and down floating swing arm according to claim 1, characterized in that: The sanding belt (4) passes around a supporting wheel (36) and two guide wheels (11).

8. The up and down floating swing arm according to claim 1, characterized in that: When the workpiece contacts the lower part of the abrasive belt (4) outside the support wheel (36), the swing arm body (31) swings upward; when the workpiece contacts the upper part of the abrasive belt (4) outside the support wheel (36), the swing arm body (31) swings downward.

9. A method for operating an up-and-down floating swing arm according to any one of claims 1 to 8, characterized in that: The working method is as follows: when the workpiece contacts the lower part of the sanding belt (4) outside the support wheel (36), the workpiece pushes the support wheel (36) upward, causing the swing arm body (31) to swing along the swing arm shaft (32), and the swing arm limit seat (33) pushes the floating limit seat (26) and the floating push rod (25) backward, and the floating push rod (25) pushes the lower end of the floating push rod (22) to swing along the floating shaft (23). In this state, the floating cylinder (21) pushes the upper end of the floating push rod (22) to swing along the floating shaft (23), thereby achieving a force balance state; When the workpiece contacts the upper part of the sanding belt (4) outside the support wheel (36), the workpiece pushes the support wheel (36) downward, causing the swing arm body (31) to swing along the swing arm rotation axis (32), and the swing arm limit seat (33) pushes the floating limit seat (26) and the floating push rod (25) backward. The floating push rod (25) pushes the lower end of the floating push rod (22) to swing along the floating rotation axis (23). In this state, the floating cylinder (21) pushes the upper end of the floating push rod (22) to swing along the floating rotation axis (23), thereby achieving a force balance state.

10. The working method of the up and down floating swing arm according to claim 9, characterized in that: In the initial state, the support wheel (36) holds the abrasive belt (4) tight, and the swing arm body (31) is in a horizontal state under the action of the floating cylinder (21).

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