JP4189010B2 - Barrel polishing equipment - Google Patents

Description

  The present invention relates to a barrel polishing apparatus.

2. Description of the Related Art Conventionally, there is known a type of barrel polishing apparatus in which a barrel tank having a barrel lid is inserted into a barrel case, and polishing is performed by revolving in that state. As such a thing, the thing of the following patent document 1 can be mentioned. Since the barrel polishing apparatus can incorporate a plurality of barrel tanks at once, it has been desired that the operation of loading and unloading the barrel case be as short as possible. Therefore, in this case, while a protrusion is provided on the side surface of the barrel tank, a notch groove having a bowl shape is formed on the barrel case side from the vertical portion and the horizontal portion, and the barrel tank is A configuration has been adopted in which the connector is prevented from coming off simply by turning after being fitted straight into the inside.
Japanese Utility Model Publication No. 5-93755

  The above structure was excellent in that it improved the workability of detaching the barrel tank. However, it has been known that during the polishing operation, the barrel tank may be detached from the barrel case. The cause was thought to be as follows. That is, there is a difference between the outer diameter of the barrel tank and the inner diameter of the barrel case, and a slight rattling is allowed between the protrusion of the barrel tank and the notch groove on the case side. When the internal vibration is transmitted to the barrel tank, a relative displacement in the circumferential direction occurs between the barrel tank and the barrel case. Then, the projection that was originally located at the back of the horizontal part gradually moved to the boundary part with the horizontal part, and then the vertical part was gradually raised while repeating the reciprocation between the walls at the same time. It was thought that there was a phenomenon that it finally went out from the notch groove.

  The present invention has been completed based on the above-described circumstances, and can easily insert the barrel tank into the barrel case, and can reliably prevent the barrel tank from being removed. An object is to provide a polishing apparatus.

As means for achieving the above object, the invention of claim 1 is directed to a barrel tank comprising a barrel tank main body and a presser lid for closing the opening of the barrel tank main body so as to be openable and closable, and a housing opening opened in the axial direction A barrel case capable of accommodating the barrel tank, and a barrel polishing apparatus for polishing by revolving and revolving in a state in which the barrel tank is accommodated in the barrel case. the outward, with the pressing portion is arranged to said barrel tank to regulate the slipping out from the barrel casing, the pressing portion to the barrel tank when withdrawing the barrel tank in the outside of the housing opening be characterized in that it is movable between a release position where the non-interference with respect to said barrel tank when withdrawn and pressing position made possible interference against, the barrel tank It is intended.

  According to a second aspect of the present invention, in the first aspect of the present invention, a plurality of barrel cases for accommodating the barrel tanks are provided, and the same number of the pressing portions are arranged correspondingly. The parts are connected to each other to form a pressing unit.

  According to a third aspect of the present invention, the pressing unit is mounted on a revolution shaft of a barrel polishing apparatus, and the pressing portion has a plurality of arms from the revolution shaft toward the barrel cases. And a pressing roller is attached to the tip of each arm in a non-contact state and freely swinging outside the portion where the barrel tank is exposed from the receiving port. It is.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, a support portion in which a base end portion of each arm is fixed to a central portion of the pressing unit is concentric with and relative to the revolution shaft. A guide groove is formed on one of the revolving shaft and the support portion over a predetermined angular range in the circumferential direction, and the other side projects into the guide groove. By moving the stroke range set in the guide groove, a restriction shaft is provided that allows the pressing roller to move between the pressing position and the release position, and further between the support portion and the revolution shaft. Is provided with locking means capable of fixing the support portion and the revolution shaft at least when the pressing roller is in the pressing position.

  According to a fifth aspect of the present invention, the barrel polishing apparatus is housed in a casing, and the inner surface of a cover plate provided in the casing so as to be openable and closable is configured such that when the cover plate is closed, the barrel tank is opened from the storage opening. Auxiliary pressing means for restricting the withdrawal of the barrel tank is provided outside the exposed portion.

<Invention of Claim 1>
According to the first aspect of the present invention, the pressing portion is held at the pressing position while the barrel polishing operation is being performed. In this pressing position, since the pressing portion is in a position where it interferes when the barrel tank comes out of the barrel case, it is possible to reliably prevent the unexpected pulling out during barrel polishing. When the polishing operation is completed, the barrel tank can be easily removed from the barrel case simply by moving the pressing portion from the pressing position to the release position.

<Invention of Claim 2>
According to the invention of claim 2, since a plurality of pressing portions are connected to form a pressing unit, it is possible to move between the pressing position and the release position in a lump. Therefore, the polishing operation can be performed more efficiently.

<Invention of Claim 3>
According to the invention of claim 3, since the pressing unit revolves in conjunction with the barrel polishing apparatus and the pressing roller is also free to rotate, the pressing roller and the barrel tank are in contact with each other during the barrel polishing operation. Even if a situation of pressing occurs, it is possible to suppress wear between the pressing roller and the barrel tank.

<Invention of Claim 4>
According to the fourth aspect of the present invention, when the pressing roller is moved between the pressing position and the release position, the lock means is operated to release the supporting portion and the revolution shaft from being fixed. Under this condition, when the entire pressing unit is operated, the restriction shaft moves from one end of the guide groove to the other end. As a result, the pressing roller can automatically determine the two positions of the pressing position and the release position and position them at both positions.

<Invention of Claim 5>
According to the invention of claim 5, since the auxiliary pressing means for restricting the barrel tank from coming out is provided on the cover plate of the casing, it is more effective for holding the barrel tank.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. The entire barrel polishing apparatus is accommodated in the casing 1, and the upper half of the casing 1 can be opened and closed by a cover plate 3 attached via a hinge 2.

  A frame base 4 is horizontally attached to the lower side of the casing 1, and a motor 5 is accommodated below the frame base 4. On the frame base 4, a revolving shaft 6 that is rotationally driven by a motor 5 is supported in a vertical direction via a revolving shaft bearing 7. A turret 8 is mounted horizontally at a substantially central height position on the revolution shaft 6.

  Four barrel cases 9 shown in the figure are arranged on the turret 8 at intervals of about 90 degrees. Each barrel case 9 is fixed to the upper end of a rotation shaft 11 that penetrates the barrel case 9 in a vertical direction with respect to the turret 8 and via a rotation shaft bearing 10. On the other hand, a fixed pulley 12 is fitted on the revolving shaft 6 on the upper side of the frame base 4. The fixed pulley 12 is fixed to the above-described revolving shaft bearing 7 by a bolt 13 via a boss 57, and is fitted to the revolving shaft 6 in a non-rotatable state. A rotation pulley 14 is fitted to the lower end of each rotation shaft 11, and a belt 15 is suspended between the fixed pulley 12 and the rotation pulley 14 in two upper and lower stages. In this embodiment, the rotation pulleys adjacent to each other in the circumferential direction are stretched over one belt 15 in common. Thus, when the turret 8 rotates with the rotation of the revolution shaft 6 and each rotation shaft 11 turns around the revolution shaft 6, the belt 15 stretched between the rotation shaft 11 and the revolution shaft 6 Each rotating shaft 11 rotates in the direction opposite to the revolution direction.

  Each barrel case 9 is formed in a bottomed cylindrical shape having an upper opening, and the upper opening serves as an accommodation port 17 for accommodating the barrel tank 16. The barrel tank 16 is obtained by molding urethane resin with a mold, and includes a cylindrical barrel tank body 18 that opens upward, and a pressing lid 19 that closes the barrel tank body 18 so that the barrel tank body 18 can be opened and closed. . The barrel tank body 18 is formed with a flange 20 extending over the entire edge of the opening edge, and a total of three retaining bolts 21 are arranged at equal angular intervals on the flange 20 and each has a posture with the head upward. It is fixed by being screwed in a state protruding in the vertical direction. On the other hand, the presser cover 19 is formed in a substantially disk shape as a whole, and is formed in a position corresponding to each retaining bolt 21 through an introduction hole 22 and a locking hole 23 having different hole diameters. ing. The introduction hole 22 is formed to have a hole diameter through which the head of the retaining bolt 21 can be inserted, but the locking hole 23 is formed to have a hole diameter through which the shaft portion of the retaining bolt 21 can be inserted and the head cannot be inserted. ing. Therefore, if the retaining lid 24 is placed in a state where the retaining bolt 21 is inserted into the introduction hole 22 with respect to the barrel tank body 18, and the retaining lid 19 is rotated as it is, the retaining bolt 21 is moved to the locking hole 23 side. be able to. A handle 25 is integrally formed on the upper surface of the presser lid 19. The handle 25 in this embodiment is formed in a bridge shape along the diameter direction of the pressing lid 19, and both end portions thereof are base portions 25 </ b> B wider than the grip portion 25 </ b> A. In this way, the width of the handle 25 is not uniformly formed and the base 25B is widened, as shown in FIG. 3, because the auxiliary pressing ring 26 (auxiliary pressing means) of the lid plate 3 described later is used for each pressing arm. This is for always securing the catching state with the handle 25 while avoiding the interference with the contact 27 (refer to the situation indicated by the A position and the C position in FIG. 3).

  Next, the holding unit U for preventing each barrel tank 16 from coming out of the barrel case 9 during the polishing operation will be described.

  The holding unit U has a substantially square plate-like ba plate 28, and a total of four holding arms 27 extend radially from the central portion at intervals of about 90 degrees. Each pressing arm 27 rises with its base side obliquely upward outward, and then extends horizontally outward. When the polishing operation is performed, the extending end of each pressing arm 27 is located on the central axis of each barrel tank 16 and above the grip portion 25A of the handle 25. Further, a pressing roller 29 is mounted on the lower surface of the extending end portion of each pressing arm 27 so as to be freely rotatable, and a slight gap is held between the gripping portion 25A of the handle 25 and non-contact at the start of the polishing operation. It is as a state.

  The holding unit U is mounted on the revolution shaft 6 as follows. That is, a mounting flange 30 is formed at the upper end of the revolving shaft 6, and a mounting cylinder 32 for receiving the insertion shaft portion 31 of the pressing unit U is provided at the lower end on the flange 30. It is connected by bolting in a state where the flange portion 33 is abutted.

  The insertion shaft portion 31 is formed in a cylindrical shape having a flange 34 at the upper end, is coaxially fixed by a bolt 35 at the center of the lower surface of the base plate 28 of the holding unit U, and has a bush 36 interposed vertically in the mounting cylinder 32. Is inserted. A support cylinder 38 is erected concentrically at the center of the upper surface of the base plate 28, and a long bolt 39 passes through the support cylinder 38 so as to pass through the insertion shaft part 31. A knob 40 (locking means) is screwed into the upper end of the long bolt 39, and the knob 40 is held by abutting the lower end surface of the abutting tube portion 41 provided on the lower surface against the upper end surface of the support tube 38. Yes. The knob 40 plays a role of being integrated with or released from the holding unit U and the revolving shaft 6 by being tightened or loosened.

The long bolt 39 is loosely inserted coaxially with respect to the insertion shaft portion 31, and a disk body 43 formed with a diameter larger than that of the long bolt 39 is fixed to the lower end thereof by welding or the like. On the outer peripheral surface of the disc body 43, a slit-like cutout portion 44 is formed in the vertical direction, while a set bolt 45 is inserted from the position near the flange portion 33 in the mounting cylinder 32 from the radial direction, and its tip portion Is inserted into the cutout portion 44 of the disc body 43, thereby preventing the disc body 43 from rotating.
The height dimension of the notch 44 is set such that the locking state is maintained even when the disc body 43 (long bolt 39) moves in a vertical direction within a predetermined range. That is, when the abutting tube portion 41 and the support tube 38 are strongly abutted by tightening the knob 40, the long bolt 39 is pulled up, and the peripheral portion of the disc body 43 is located on the inner peripheral surface of the mounting tube 32. When locked to the stepped portion 47 formed at the midway height position, the holding unit U can rotate integrally with the revolving shaft 6 in a state of being positioned in the circumferential direction with respect to the revolving shaft 6.

  Further, as shown in FIG. 6, a guide groove 56 is notched in the insertion shaft portion 31 over a predetermined angle range in the circumferential direction. On the other hand, the restriction shaft 55 is screwed from the outer peripheral surface of the mounting cylinder 32, and the tip end portion of the restriction shaft 55 is inserted into the guide groove 56. As a result, the insertion shaft portion 31, and thus the holding unit U, can be angularly displaced over an angular range until the shaft end of the regulating shaft 55 or the side surface of the tip portion contacts the circumferential end surfaces of the guide groove. Specifically, as shown by a solid line in FIG. 3, a position (pressing position) where the pressing roller 29 is held above the grip portion 25 </ b> A of the handle 25 on the central axis of the barrel tank 16, and an imaginary line in FIG. 3. In this way, the pressing roller 29 and the pressing arm 27 are positioned between the barrel cases 9 adjacent to each other in the circumferential direction, and the pressing unit is positioned between the barrel case 9 and the position (release position) that does not hinder the removal and storage of the barrel tank 16. U can be angularly displaced.

  As described above, each barrel tank 16 is pulled out from the barrel case 9 mainly by the holding unit U when held in the holding position, but in this embodiment, it is further auxiliary (for example, the knob 40). An auxiliary pressing means is also provided on the lid plate 3 side (for cases such as when tightening is forgotten). As described above, half of the upper surface of the casing 1 is a fixed ceiling wall 48 continuous with the side wall of the casing 1, and the other half is an openable / closable lid plate 3 connected to the ceiling wall 48 by the hinge 2. It has become. When the cover plate 3 is closed, the metal auxiliary press ring 26 is placed at a position that can interfere with the handle 25 outside the swivel region of each press arm 27, and the inner surface of the ceiling wall 48 of the casing 1 and the cover plate. The fixed portion 26A and the movable portion 26B formed on the inner surface of the third member can be formed in cooperation with each other.

  Next, the effect of this embodiment comprised as mentioned above is demonstrated concretely. When performing the barrel polishing operation, the holding lid 19 of the barrel tank 16 taken out from the barrel case 9 is removed, and after the workpiece, polishing stone, water and compound are put in the tank, the pressing lid 19 is closed. At this time, the heads of the retaining bolts 21 are inserted into the introduction holes 22 opened in the presser cover 19, and the presser cover 19 is placed on the barrel tank 16. Under this condition, the holding lid 19 is rotated around its center, and each retaining bolt 21 is moved to the locking hole 23 side. Finally, if the retaining bolt 21 is screwed into the barrel tank 16 side, the holding lid 19 is fixed in a state where the retaining bolt 21 is restricted from returning to the introduction hole 22 side. However, the rotation direction of the presser cover 19 when the retaining bolt 21 is moved from the introduction hole 22 to the locking hole 23 is opposite to the rotation direction of the barrel case 9 (barrel tank 16).

  Next, the barrel tank 16 is accommodated in the barrel case 9. At this time, the entire pressing unit U is held at the release position. That is, the knob 40 is loosened prior to the accommodation of the barrel tank 16, and the abutment state between the abutting tube portion 41 on the lower surface of the knob 40 and the support tube 38 is eased. Thereby, the integral relationship between the holding unit U and the revolution shaft 6 is released. Thus, when the entire pressing unit U is rotated around the revolution shaft 6, the tip end portion of the regulating shaft 55 comes into contact with the end portion of the guide groove 56. The position at this time is a release position indicated by an imaginary line in FIG. 3, and each pressing arm 27 and pressing roller 29 are positioned between the adjacent barrel cases 9. Therefore, the barrel tank 16 can be accommodated in the barrel case 9 without interfering with the holding unit U. In this embodiment, since the cover plate 3 of the casing 1 opens only about half of the ceiling surface of the casing 1, the turret is placed on the barrel case 9 in order to accommodate the barrel tanks 16 in all the barrel cases 9. It is necessary to guide all the barrel tanks 16 to the opening part of the cover plate 3 by rotating 8.

  When the accommodating operation of the barrel tank 16 is completed for all the barrel cases 9 as described above, the holding unit U is rotated so that the regulating shaft 55 is brought into contact with the opposite end portion in the guide groove 56, Thereafter, the knob 40 is tightened. As a result, the pressing unit U is positioned at the pressing position indicated by the solid line in FIG. In this pressing position, each pressing roller 26 is positioned on the center axis of the corresponding barrel tank 16 with a slight gap above the handle 25. When the knob 40 is tightened at this holding position, the abutting state between the abutting tube portion 41 and the support tube 38 is strengthened, so that the holding unit U and the revolving shaft 6 are integrated, and at the same time the disc body 43 is The pressing roller 29 and the pressing arm 27 are positioned in the circumferential direction at the pressing position by pressing strongly against the stepped portion 47.

  In addition, since the moving direction of the pressing unit U from the release position to the pressing position is opposite to the revolving direction of each barrel tank 16, even if the knob 40 is forgotten to be tightened, if the barrel tank 16 revolves, The unit U is rotated with the revolving shaft 6 while being held at the pressing position, and a simple pressing state with respect to the pressing lid 19 is established.

  Next, the cover plate 3 of the casing 1 is closed and the barrel polishing operation is started. That is, when the motor 5 is driven, the revolution shaft 6 rotates and the turret 8 rotates together, so that each barrel case 9 (barrel tank 16) rotates around the revolution shaft 6 counterclockwise in FIG. Further, since the pressing unit U is integrated with the revolving shaft 6 by tightening the knob 40, each pressing roller 29 of the pressing unit U is held in a state where it is positioned at the pressing position with respect to the barrel tank 16. On the other hand, since the belt 15 is stretched between the fixed pulley 12 and the respective rotation pulleys 14, the rotation shaft 11 rotates around the axis thereof, and the barrel case 9 (barrel tank 16) is shown in FIG. Rotate clockwise.

  In the barrel tank 16, the workpiece is polished by the rotation / revolution action of the barrel tank 16. Here, the barrel tank 16 is subjected to the action of slight vibrations and sometimes climbs up inside the barrel case 9 and tries to jump upward. However, since the pressing roller 29 is waiting slightly above the gripping portion 25A, If the upward movement is restricted by contacting the roller 29, the barrel tank 16 will not come out of the barrel case 9 any more. Further, the barrel tank 16 does not have side projections as in the prior art, and the barrel case does not have a corresponding notch. Accordingly, in the present embodiment, since the barrel tank 16 is allowed to freely rotate in the barrel case 9, it is less likely to cause an operation that causes the barrel tank to come out as compared with the prior art. It has become. Furthermore, even if the barrel tank 16 rotates while the pressing roller 29 is in contact with the gripping portion 25A, the pressing roller 29 rotates freely along with the rotation of the barrel tank 16, so that the gripping portion 25A and the pressing roller 29 are rotated. Can be avoided.

  On the other hand, even if the tightening of the knob 40 is loosened or unforeseen, the pressing roller 29 may come off the barrel tank 16 so that the auxiliary pressing ring 26 can always interfere with the handle 25. For this reason, the barrel tank 16 is reliably prevented from coming out.

  When barrel polishing is completed as described above, the cover plate 3 of the casing 1 is opened, the movable portion 26B of the auxiliary pressing ring 26 is retracted upward, and the knob 40 is loosened to move the entire pressing unit U toward the release position. If rotated, the upper part of the barrel tank 16 is opened, so that the barrel tank 16 can be easily extracted from the barrel case 9. Then, if the retaining bolt 21 is loosened and the presser lid 19 is removed, the polished workpiece can be taken out from the inside.

  Since the pressing roller 29 and the pressing arm 27 for each pressing lid 19 are integrated by the base plate 28 and the whole is configured as a unit, the pressing and releasing for each pressing lid 19 can be performed collectively. Therefore, the operation of storing and extracting the barrel tank 16 with respect to the barrel case 9 can be performed efficiently. Further, the pressing unit U can be locked or released only by rotating the knob 40, and even if the polishing operation is performed with the knob 40 being insufficiently tightened or forgotten to be tightened, Since the regulating shaft 55 is rotated with the revolving shaft 6 while being locked to the end portion of the guide groove 56, the pressing function can be easily maintained. Further, since the auxiliary retaining ring 26 is also prevented from coming off, the barrel tank 16 can be reliably prevented from coming out even in an unexpected situation.

<Reference technology>
Next, reference technology of the present invention will be described with reference to FIG. In the first embodiment described above, the technique for preventing the barrel tank 16 from coming off by the holding unit U attached to the revolution shaft 6 is disclosed. In this reference technique, a member for preventing the barrel tank 9 from coming off is assembled. . That is, the mounting part 50 is projected from the outer peripheral surface of the side wall of the barrel case 9 and one end of the pressing member 51 is attached.

The pressing member 51 is formed of a leaf spring material, and extends vertically along the outer surface of the barrel case 9. Then, the latching portion 53 is formed by bending inward and horizontally in a position near the upper end, and then the operation portion 52 is formed by bending outward obliquely. The pressing member 51 can be bent and deformed in the inner and outer directions as a whole, and is latched to the upper surface of the pressing lid 19 with an elastic force in a pressure contact state, thereby preventing the pressing member 51 from coming off from the barrel case 9. On the contrary, when the barrel tank 16 is pulled out from the barrel case 9, the latching portion 53 and the pressing lid are operated by operating the operating portion 52 of the pressing member 51 outward and bending the entire pressing member 51 outward. Since the engagement with 19 can be released, the barrel tank 16 can be easily removed from the barrel case 9 in this state.
Other configurations are the same as those of the first embodiment.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

  (1) In this embodiment, both the pressing unit and the auxiliary pressing ring are set to restrict the detachment of the barrel tank 16 to double, but only one of them may be used.

  (2) In the present embodiment, four barrel cases and barrel tanks are provided, but the number is not limited and may be singular.

  (3) The pressing roller can be omitted, and the pressing lid may be pressed directly at the tip of the pressing arm.

  (4) In the first embodiment, the pressing unit U is moved between the pressing position and the release position in the horizontal plane, but the moving direction is not limited to the horizontal plane and includes a component in the vertical direction. You may make it move with.

Front sectional view of barrel polishing equipment Same top view Plan view showing the relationship between the holding unit and the barrel tank Front view showing enlarged main parts Side sectional view showing reference technology AA line sectional view of FIG.

Explanation of symbols

6 ... Revolving shaft 9 ... Barrel case 11 ... Spinning shaft 16 ... Barrel tank 19 ... Holding lid 26 ... Auxiliary holding ring (auxiliary holding means)
27 ... Presser arm 29 ... Presser roller (presser)
40 ... Knob (locking means)

Claims (5)

A barrel tank composed of a barrel tank body and a presser lid that closes and opens the opening of the barrel tank body ; and
A barrel case capable of accommodating the barrel tank through a storage opening that opens in the axial direction;
A barrel polishing apparatus for polishing by rotating and revolving in a state where the barrel tank is housed in the barrel case,
A holding part that restricts the barrel tank from coming out of the barrel case is disposed on the outside of the barrel case on the side of the accommodation port. the interference can become pressing position relative to the barrel tank, that it is movable in between a release position where the non-interference with respect to said barrel tank when withdrawing the barrel tank when withdrawing the bath A barrel polishing apparatus characterized by the above. A plurality of barrel cases for accommodating the barrel tanks are provided, and the same number of the pressing parts are arranged correspondingly, and the pressing parts are connected to each other to form a pressing unit. The barrel polishing apparatus according to claim 1. The holding unit is mounted on a revolution shaft of a barrel polishing apparatus, and the holding unit has a plurality of arms extending radially from the revolution shaft toward each barrel case, and the barrel tank is provided at the tip of each arm. The barrel polishing apparatus according to claim 2, wherein a pressing roller is attached in a non-contact state and freely rotatable outside a portion exposed from the housing port. A support portion to which a base end portion of each arm is fixed is arranged at the center portion of the pressing unit so as to be concentric with the revolution shaft and relatively angularly displaceable, and the revolution shaft and the support portion. A guide groove is formed in a circumferential direction over a predetermined angle range, and the other side is inserted into the guide groove and moved in a stroke range set in the guide groove. A restricting shaft that allows the roller to move between the pressing position and the releasing position is provided, and the support portion is at least when the pressing roller is in the pressing position between the support portion and the revolution shaft. The barrel polishing apparatus according to claim 3, further comprising a lock unit capable of fixing the revolving shaft and the revolving shaft. The entire barrel polishing apparatus is accommodated in a casing, and an inner surface of a cover plate provided in the casing so as to be openable and closable is located outside the portion where the barrel tank is exposed from the receiving port when the cover plate is closed. The barrel polishing apparatus according to any one of claims 1 to 4, further comprising an auxiliary pressing means that is positioned to restrict the barrel tank from coming out.

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