JP5463202B2 - roller - Google Patents

Description

  The present invention is a roller having a shaft member at its axial end, and this shaft member is a separate member from the roller body, and the base end of this shaft member is fitted into a hole provided at the end of the roller body. In addition, the present invention relates to a roller fixed with an adhesive.

  In the conventional roller of this type, for example, as shown in FIGS. 1 and 2, a fitting hole b is provided at the end of the roller body a, while the shaft member c is provided with the fitting hole b. A fitting shaft d to be fitted is provided, and an adhesive is applied to the peripheral surface of the fitting shaft d and fitted into the fitting hole b, whereby the shaft member c is fitted into the fitting hole b of the roller body a. The coaxial shaft d is fixed with an adhesive (for example, see Patent Document 1).

JP-A-8-48789

  In the conventional roller described above, the inner peripheral surface of the fitting hole b of the roller body a and the outer peripheral surface of the fitting shaft d of the shaft member d are both simple cylindrical surfaces. When an adhesive is applied to the outer peripheral surface of the, and the fitting shaft d is fitted into the fitting hole b, unevenness in the distribution of the adhesive between the fitting surfaces may occur, resulting in weak bonding.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above, and it is desirable to provide a roller in which sufficient bonding strength can be obtained by uniformly spreading the adhesive evenly on the bonding surface between the fitting hole and the fitting shaft. It is what.

In order to achieve the above object, a roller according to claim 1 of the present invention is configured to fit a fitting shaft of a shaft member into a fitting hole provided in the end portion of the roller body and an adhesive. A roller for connecting the shaft member by joining at
A plurality of circumferential grooves are provided in the axial direction on one fitting surface of the fitting hole and the fitting shaft,
Open the adhesive injection port in the groove on one end side on both sides in the axial direction, and open the adhesive discharge port in the groove on the other end side,
The groove is a plurality of annular grooves partitioned by a partition, and the notch that becomes a passage communicating with the partition between the grooves is shifted in the circumferential direction with respect to the bonding agent injection port and the bonding agent discharge port. In the position,
The grooves from the adhesive inlet to the adhesive outlet are connected in a labyrinth,
A hole communicating with each of the adhesive inlet and the adhesive outlet is provided on the end surface of the connecting portion between the roller body and the shaft member.

  According to the present invention, the adhesive is injected into the adhesive injection port from the hole provided in the end surface of the connection portion between the roller body and the shaft member, and the adhesive is discharged from the adhesive discharge port, which is connected to the connection portion. It can be confirmed that the adhesive is filled in the groove provided on the fitting surface of the fitting portion by visually observing that it has been pushed out from the hole provided on the end surface of the fitting portion. And since the passage in the groove at this time is a labyrinth, a certain pressure acts on the adhesive in the groove, and the adhesive does not mix bubbles in the groove, and the fitting hole and Adhesive can be evenly distributed evenly on the joint surface with the fitting shaft, and sufficient joint strength can be obtained.

  As described above, the adhesive can be applied to the joint surface mechanically at a constant pressure, so that anyone can easily apply the adhesive on the joint surface in a short time without requiring skill. Therefore, it is possible to save labor and shorten the work time, and to obtain a cost effect by reducing the number of manufacturing steps.

It is sectional drawing which shows the state before the fitting hole of the conventional roller, and a shaft member before fitting. It is sectional drawing which shows the fitting state of the fitting hole of a conventional roller, and a shaft member. It is a partially broken sectional view which shows the roller which concerns on this invention. It is a front view which shows a shaft member. It is sectional drawing of a shaft member. It is a front view which shows the state rotated 90 degree | times from the state shown in FIG. 4 of the shaft member. It is a front view which shows the state rotated 180 degree | times from the state shown in FIG. 6 of the shaft member. It is sectional drawing which shows the Example which provided the groove | channel in the fitting surface side of a roller main body.

  An embodiment of the present invention will be described with reference to FIG. In FIG. 3, reference numeral 1 denotes a roller body having a hollow structure (which may be a solid structure), and 2a and 2b are shaft members fitted and joined to both ends of the roller body 1. Fitting holes 3a and 3b are provided at both ends of the roller body 1, and the fitting shafts 4a and 4b of the shaft members 2a and 2b are closely fitted in the fitting holes 3a and 3b.

  Since the joining structure of the fitting holes 3a and 3b of the roller body 1 and the shaft members 2a and 2b is basically the same, one of them will be described below with reference to FIGS.

  The fitting shaft 4a of the shaft member 2a has a cylindrical shape that has an outer diameter that is as close as possible to the fitting hole 3a of the roller body 1 and can be closely fitted to the inner diameter thereof. A plurality of, for example, three grooves 5a, 5b, 5c that are annular and wide are provided on the peripheral surface of the fitting shaft 4a in the axial direction. And between each groove | channel 5a-5c becomes the annular partition 6a, 6b whose outer diameter is the same diameter as the outer diameter of the fitting shaft 4a. The grooves 5a to 5c are communicated with the notches 7a and 7b provided in the partitions 6a and 6b as shown in FIGS. The notches 7a and 7b are provided at a large angle in the circumferential direction of the fitting shaft 4a, for example, at a position shifted by 180 degrees from each other.

  Of the plurality of grooves 5a to 5c, for example, an adhesive injection port 9a is opened in the first groove 5a, and an adhesive discharge port 9b is opened in the first groove 5c. And the hole 10a, 10b connected to each opening | mouth 9a, 9b is provided in the near side end surface of the shaft member 2a. The adhesive injection port 9a may be opened in the groove on the backmost side, and the adhesive discharge port 9b may be opened in the groove on the frontmost side. The two ports 9a and 9b are open at positions that are out of phase with the notches 7a and 7b of the partitions 6a and 6b, for example, 180 degrees, and are grooves extending from the adhesive injection port 9a to the adhesive discharge port 9b. The passage between them is a maze.

  The connecting operation between the roller body 1 having the above-described configuration and the shaft members 2a and 2b will be described with reference to one shaft member 2a.

  The fitting shaft 4 a of the shaft member 2 a is fitted into the fitting hole 3 a of the roller body 1. Next, an adhesive supply nozzle is connected to the hole 10a to inject the adhesive. The adhesive injected from the hole 10a is injected into the groove 5a on the frontmost side from the adhesive injection port 9a.

  Then, after the adhesive fills in the groove 5a, it flows into the adjacent groove 5b from the notch 7a provided in the partition 6a between the adjacent grooves 5b, and in the state where each groove is sequentially filled, The groove 5c on the side is filled and pushed out from the adhesive discharge port 9b communicating with the groove 5c, and is discharged to the near side from the hole 10b of the shaft member 2a. Then, by discharging the adhesive from the hole 10b communicating with the adhesive discharge port 9b, the adhesive is evenly filled in the grooves 5a to 5c with the air in the grooves 5a to 5c being excluded. I can confirm that. After the completion of the filling of the adhesive, the adhesive is cured through the adhesive curing time, so that unevenness between the inner surfaces of the fitting holes 3a and 3b of the roller body 1 is caused over the entire surface of the grooves 5a to 5c. There is no joining.

In the above embodiment, each of the grooves 5a to 5c is relatively deep in the drawing, but the depth of the grooves 5a to 5c is appropriately about 0.8 mm .

  In the configuration of the present invention, mutual members to be bonded to each other are not limited to metals, but can be applied to bonding between various combinations of materials by selecting suitable adhesives such as metal and plastic, plastic and plastic, etc. .

In the above embodiment, the example in which the grooves 5a to 5c for filling the adhesive are provided on the shaft members 2a and 2b side is shown. However, as shown in FIG. 8, the fitting shaft 4a 'of the shaft member 2a (2b) is provided. (4b ') may be cylindrical, and the annular grooves 5a' to 5c ' may be provided on the roller body 1 on the side of the fitting hole 3a' (3b '). Also in this case, since the thickness of the end portion of the roller body 1 is thin, it is preferable to provide the adhesive injection port 9a and the adhesive discharge port 9b on the fitting shaft 4a '(4b') side. Of course, it may be provided on the main body 1 side.

  The roller according to the present invention can be used as a roller member such as a pulling roller, an ink roller, a plate cylinder, an impression cylinder, and a guide roller of a rotary printing press, and further as a roller member in other machine fields.

  DESCRIPTION OF SYMBOLS 1 ... Roller main body, 2a, 2b ... Shaft member, 3a, 3b, 3a ', 3b' ... Fitting hole, 4a, 4b, 4a ', 4b' ... Fitting shaft, 5a, 5b, 5c, 5a ', 5b ', 5c' ... groove, 6a, 6b ... partition, 7a, 7b ... notch, 8 ... front side end surface, 9a ... adhesive inlet, 9b ... adhesive outlet, 10a, 10b ... hole.

Claims (1)

The roller body is configured such that the shaft member is connected to the end of the roller body by fitting the shaft of the shaft member into a fitting hole provided in the end and joining with an adhesive,
A plurality of circumferential grooves are provided in the axial direction on one fitting surface of the fitting hole and the fitting shaft,
Open the adhesive injection port in the groove on one end side on both sides in the axial direction, and open the adhesive discharge port in the groove on the other end side,
The groove is a plurality of annular grooves partitioned by a partition, and the notch that becomes a passage communicating with the partition between the grooves is shifted in the circumferential direction with respect to the bonding agent injection port and the bonding agent discharge port. In the position,
The grooves from the adhesive inlet to the adhesive outlet are connected in a labyrinth,
A roller characterized in that a hole communicating with each of the adhesive injection port and the adhesive discharge port is provided on an end surface of a connecting portion between the roller body and the shaft member.

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