JP5225063B2 - Shaft cover - Google Patents

Description

  The present invention relates to a cover attached to each shaft of an elevating device that changes a distance between a base portion and a table portion by changing a protruding amount of each shaft that protrudes from a base portion and supports a table portion.

  Beverage filling devices for filling beverages in cans are known. In such a beverage filling apparatus, a can is held at a predetermined height, and a beverage is filled into the held can by inserting a filling valve from above. And in such a drink filling apparatus, a drink may be filled into cans with different heights. In this case, the mechanism for holding the can is moved up and down by the lifting device, thereby adjusting the distance between the can and the filling valve. As such an elevating device, a device in which a table provided with a mechanism for holding a can and the like is supported by a plurality of shafts protruding upward from a base and the protruding amount of these shafts can be changed is known. In general, a protective cover is attached to the shaft of such an elevating device so that no beverage or the like is placed on the shaft. As a cover that protects such a shaft or the like, for example, a protective duct that houses and protects piping and wiring in a sheet portion is known (see Patent Document 1). In addition, there is Patent Document 2 as a prior art document related to the present invention.

JP 2000-170986 A JP 2006-266388 A

  In the case where the shaft is covered with a sheet like the cover of Patent Document 1, the sheet may be rubbed during expansion / contraction to open a hole in the sheet. Therefore, if the cover is used for a shaft that is frequently expanded and contracted, a hole is immediately opened in the sheet, and the cover replacement frequency may be increased.

  Therefore, an object of the present invention is to provide a shaft cover that can be easily attached to and detached from the shaft and can reduce the replacement frequency.

The shaft cover according to the present invention has a plurality of shafts (4) that protrude from the base portion (2) and support the table portion (3), and change the protrusion amount of each shaft from the base portion. A cover (10) attached to each shaft of the elevating device (6) for changing the distance between the table portion and the table portion, and is attached to one of the base portion or the table portion so as to surround the shaft. A cylindrical inner cylinder part (11), the base part or the table part so that the inner diameter is larger than the outer diameter of the inner cylinder part, and partially overlaps the inner cylinder part and surrounds the shaft A cylindrical outer cylinder portion (12) attached to the other of the first and second inner cylinder portions, and the inner cylinder portion and the outer cylinder portion are each configured to be divided along an axis (CL) direction, and the table portion is Arranged above the base The outer cylinder part is attached to the table part, the inner cylinder part is attached to the base part, and the inner cylinder part is provided around each shaft and protrudes upward from the upper surface of the base part. Fixed to the upper surface of the stepped portion (2a) with a bolt (13), and the outer cylinder portion can be divided into a first outer cylinder member (12a) and a second outer cylinder member (12b), and the table portion The lower surface is provided with a step portion (3a) provided around each axis and projecting downward from the lower surface to which the outer tube portion is attached. At the upper end of the outer tube portion, a step of the table portion is provided. A fitting hole (18) formed by the first outer cylinder member and the second outer cylinder member is provided so as to be an interference fit with respect to the portion, and the outer cylinder portion is The first outer portion so that the stepped portion of the table portion is fitted in the fitting hole. Sandwiching the step portion between the and the member second outer cylindrical member, by connecting the second outer cylinder member and the first outer cylindrical member with a bolt (22), that is fixed to the table section Thus, the above-described problem is solved.

  According to the shaft cover of the present invention, the protruding amount of the shaft can be changed while protecting the entire shaft by overlapping a part of the outer tube portion with the inner tube portion. And since these inner cylinder parts and outer cylinder parts can be divided | segmented along an axial direction, they can be easily attached or detached to a shaft. Furthermore, by setting the inner diameter of the outer cylinder part and the outer diameter of the inner cylinder part so that the inner surface of the outer cylinder part and the outer surface of the inner cylinder part do not come into contact with each other, these cylinder parts can be prevented from rubbing with each other. Therefore, the replacement frequency can be reduced.

Further, according to the shaft cover of the present invention, even if water droplets or foreign matter adhere to the outer surface of the inner cylinder part or the outer cylinder part, they can be sufficiently suppressed from entering the inner cylinder part or the outer cylinder part.

  One form of the shaft cover of the present invention may further include a seal member (17) sandwiched in a gap between the inner tube portion and the outer tube portion. In this case, it is possible to further make it difficult for water droplets or foreign matter to enter the inner cylinder part or the outer cylinder part.

  In one form of the shaft cover of the present invention, the inner cylinder part and the outer cylinder part may be made of stainless steel. In this case, it is hygienic and the inner tube portion and the outer tube portion can be easily cleaned.

  In addition, in the above description, in order to make an understanding of this invention easy, the reference sign of the accompanying drawing was attached in parenthesis, but this invention is not limited to the form of illustration by it.

  As described above, according to the present invention, since the inner cylinder part and the outer cylinder part for protecting the shaft can be divided along the axial direction, they can be easily attached to and detached from the shaft. Also, by setting the inner diameter of the outer cylinder part and the outer diameter of the inner cylinder part so that the inner surface of the outer cylinder part does not contact the outer surface of the inner cylinder part, the outer cylinder part and the inner cylinder part are less likely to be damaged. be able to. Therefore, the replacement frequency can be reduced.

  FIG. 1 schematically shows a part of a beverage filling device for filling a can with a beverage. The beverage filling apparatus 1 includes a base 2 as a base portion supported by a gantry (not shown), and a table portion to which a holding mechanism (not shown) for holding a can that is disposed above the base 2 is attached. The support base 3 is provided. The support table 3 is supported by a plurality of shafts 4 (only one is shown in FIG. 1) protruding upward from the base 2. A support member 5 for supporting a mechanism provided above the support table 3 is provided on the outer periphery of the support table 3. A lifting device 6 is fixed to the lower surface of the base 2. The lifting device 6 changes the amount of protrusion of the shaft 4 that protrudes upward from the base 2. The shaft 4 extends upward from the lifting device 6 through the base 2. In this beverage filling apparatus 1, beverages are filled into cans having different heights. At this time, the elevating device 6 adjusts the interval between the base 2 and the support base 3 in order to make the beverage filling device 1 correspond to cans having different heights.

  As shown in this figure, a cover 10 according to an embodiment of the present invention is provided around the shaft 4. FIG. 2 shows an axial sectional view of the cover 10. As shown in this figure, the cover 10 includes an inner cylinder part 11 and an outer cylinder part 12 arranged outside the inner cylinder part 11. The inner cylinder part 11 and the outer cylinder part 12 are formed, for example with stainless steel. The base 2 is provided with a step portion 2a protruding upward, and the shaft 4 protrudes from the step portion 2a. The inner cylinder part 11 is fixed to the step part 2a with a bolt 13. The inner cylinder portion 11 is configured to be divided into a first inner cylinder member 11a and a second inner cylinder member 11b along the axis CL. Each inner cylinder member 11a, 11b is provided with two connecting portions 14, respectively. One of the two connecting portions 14 is provided above the inner cylinder members 11a and 11b, and the other is provided below the inner cylinder members 11a and 11b. And the connection part 14 of the 1st inner cylinder member 11a and the connection part 14 of the 2nd inner cylinder member 11b are connected with the volt | bolt 15, and the cylindrical inner cylinder part 11 is formed.

  A groove 16 that is recessed radially inward is provided at the upper end of the inner cylinder portion 11. The groove 16 is provided on the outer circumference of the inner cylinder portion 11 over the entire circumference. The groove 16 is fitted with an O-ring 17 as a seal member. The O-ring 17 is sandwiched between the inner tube portion 11 and the outer tube portion 12, thereby closing the space between the inner tube portion 11 and the outer tube portion 12. As described above, the distance between the base 2 and the support base 3 is adjusted by the elevating device 6. A value smaller than the lower limit value of the range adjusted by the lifting device 6 is set for the height of the inner cylinder portion 11. That is, the height of the inner cylinder portion 11 is set so that the upper end of the inner cylinder portion 11 does not interfere with the support table 3 even when the distance between the base 2 and the support table 3 is minimized by the lifting device 6. The

As shown in FIG. 2, the support base 3 is provided with a stepped portion 3a protruding downward. The step 3a is provided on the support 3 so as to face the step 2a of the base 2 and be coaxial with the step 2a. For this reason, the shaft 4 is interposed between the stepped portion 2a and the stepped portion 3a. The outer cylinder part 12 is attached to the step part 3a. The outer cylinder part 12 has a slightly larger inner diameter than the outer diameter of the upper end of the inner cylinder part 11. Therefore, the outer cylinder part 12 can be fitted to the outside of the inner cylinder part 11. A fitting hole 18 is provided at the upper end of the outer cylinder portion 12 so that the upper end can be fitted into the stepped portion 3a. The inner diameter of the fitting hole 18 is set so as to be an interference fit with respect to the stepped portion 3a. By setting the inner diameter of the fitting hole 18 in this way, the outer cylindrical portion 12 can be fixed to the stepped portion 3 a by the fitting hole 18.

  The outer cylinder part 12 is comprised so that it can divide | segment into the 1st outer cylinder member 12a and the 2nd outer cylinder member 12b along the axis line CL direction. The connection part 19 is provided in the lower end of each outer cylinder member 12a, 12b similarly to the inner cylinder members 11a, 11b. Similarly, the connection part 20 is provided also in the upper end of each outer cylinder member 12a, 12b. And these connection parts 19 and 20 are connected with the volt | bolts 21 and 22, and the cylindrical outer cylinder part 12 is formed. The height of the outer cylinder portion 12 is smaller than the lower limit value of the range adjusted by the lifting device 6, and the outer cylinder portion 12 is outside even if the distance between the base 2 and the support base 3 reaches the upper limit value of the range. The lower end of the cylindrical portion 12 is set so as to overlap the upper end of the inner cylindrical portion 11. Thus, by setting the height of the outer cylinder part 12, the inner cylinder part 11 and the outer cylinder part 12 can be made to overlap reliably.

According to the cover 10 of the present embodiment, since the lower end of the outer cylinder portion 12 overlaps the upper end of the inner cylinder portion 11, the entire shaft 4 can be protected. Moreover, since the outer cylinder part 12 can be slid with respect to the inner cylinder part 11, the protrusion amount of the axis | shaft 4 can be changed. Since the inner cylinder part 11 and the outer cylinder part 12 are each comprised so that division | segmentation is possible along an axis line CL direction, it can attach or detach easily to the axis | shaft 4. FIG. Since the inner diameter of the outer cylinder part 12 is set slightly larger than the outer diameter of the inner cylinder part 11, the outer cylinder part 12 and the inner cylinder part 11 can be prevented from rubbing. Therefore, damage etc. can be suppressed sufficiently and the replacement frequency can be reduced.

  As described above, since the inner cylinder part 11 is attached to the base 2 and the outer cylinder part 12 is attached to the support base 3, respectively, even if water drops or foreign matters adhere to the outer surface of the inner cylinder part 11 or the outer cylinder part 12, It is possible to suppress such water droplets and foreign matters from entering the inner cylinder portion 11 and the outer cylinder portion 12. Further, since an O-ring 17 is provided between the upper end of the inner cylinder portion 11 and the outer cylinder portion 12, water droplets and foreign matter are also brought into the inner cylinder portion 11 and the outer cylinder portion 12 by the O-ring 17. Can be prevented from entering. Furthermore, since the inner cylinder part 11 and the outer cylinder part 12 are made of stainless steel, they are hygienic and can be easily cleaned.

  The present invention may be implemented in various forms without being limited to the form described above. For example, the inner cylinder part may be attached upward and the outer cylinder part may be attached downward. The lifting device to which the cover of the present invention is attached to the shaft is not limited to the lifting device provided in the beverage filling device, and may be applied to the shaft of the lifting device incorporated in other devices. The material of the inner cylinder part and the outer cylinder part is not limited to stainless steel. For example, you may form with a transparent material. In this case, the shaft state can be seen without removing the cover.

The figure which shows schematically a part of drink filling apparatus with which the cover for shafts which concerns on one form of this invention was attached to the shaft. The axial sectional view of a cover.

Explanation of symbols

2 Base (base part)
3 Support stand (table part)
4 shaft 6 lifting device 10 cover 11 inner cylinder part 12 outer cylinder part 17 O-ring (seal member)
CL axis

Claims (3)

Each of the lifting devices that have a plurality of shafts that protrude from the base portion and support the table portion, and that change the distance between the base portion and the table portion by changing the protruding amount of each shaft from the base portion. A cover attached to the shaft,
A cylindrical inner cylinder part that is attached to one of the base part or the table part so as to surround the shaft, an inner diameter is larger than an outer diameter of the inner cylinder part, and a part of the inner cylinder part overlaps And a cylindrical outer cylinder part attached to the other of the base part or the table part so as to surround the shaft,
Each of the inner cylinder part and the outer cylinder part is configured to be divided along the axial direction ,
The table portion is disposed above the base portion;
The outer cylinder part is attached to the table part, and the inner cylinder part is attached to the base part,
The inner cylinder portion is fixed to the upper surface of the step portion provided around each axis and projecting upward from the upper surface of the base portion with a bolt,
The outer cylinder portion can be divided into a first outer cylinder member and a second outer cylinder member,
The lower surface of the table portion is provided with a step portion provided around each axis and projecting downward from the lower surface to which the outer tube portion is attached.
A fitting hole provided at the upper end of the outer cylinder part so as to be an interference fit with respect to the step part of the table part, and formed by the first outer cylinder member and the second outer cylinder member Is provided,
The outer cylinder portion sandwiches the step portion between the first outer cylinder member and the second outer cylinder member so that the step portion of the table portion fits into the fitting hole, and the first outer cylinder member and the The shaft cover is fixed to the table portion by connecting the second outer cylinder member with a bolt . The shaft cover according to claim 1, further comprising a seal member sandwiched in a gap between the inner cylinder part and the outer cylinder part. The shaft cover according to claim 1 or 2, wherein the inner cylinder part and the outer cylinder part are made of stainless steel.

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