JPH08309673A - Pressing device for mounting/demounting sleeve member - Google Patents

Abstract

PURPOSE: To mount/demount efficiently by a simple constitution a plurality of sleeve members coaxially provided in each other in a block main unit. CONSTITUTION: A device comprises a pair of pressing shafts 16 integrally advanceable/retreatable in an axial direction of sleeve members 14a to 14c, plurality of pressing jigs 18a to 18c having a diameter corresponding to the sleeve members 14a to 14c also to be mountably/demountably aligned to be held to the pressing shaft 16 and a movable clamp mechanism 20 capable of arranging these pressing jigs 18a to 18c on a shaft of the sleeve members 14a to 14c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device for attaching and detaching a sleeve member for crimping and / or releasing two or more sleeve members provided on a block body with respect to the block body.

[0002]

2. Description of the Related Art For example, a cast product such as a cylinder block is formed by integrating a block member made of an aluminum alloy with a sleeve member (so-called cylinder sleeve or metal) made of an iron-based metal or the like. Therefore, when the cast product is melted and reused due to defective die casting or defective machining, it is necessary to remove the sleeve member from the block body. However, this kind of work usually depends on the manual work of the worker himself / herself using a hammer or a vibration device, and there is a problem that the work efficiency is poor.

Therefore, in order to automatically perform this kind of work, an apparatus disclosed in Japanese Utility Model Publication No. 6-34044 is known. According to this device, in a state where the insertion portions of both separators which are biased by the spring are inserted into the sleeve (cylinder sleeve) of the cast product, both separators are pushed by the pressing operation of the wedge. It is pushed out and a force in the opening direction is applied to the sleeve. As a result, the block body and the sleeve are destroyed, and the sleeve that has become a fragment is reliably separated.

[0004]

By the way, a plurality of sleeve members (metals) are coaxially press-fitted on the balancer shaft in a cylinder block which is a cast product. Therefore, when trying to use the above-mentioned device for extracting sleeve members of this kind, each sleeve member is
It has been pointed out that there is a problem in that the sleeve members must be broken one by one and the efficiency of the work of extracting the sleeve member cannot be achieved.

The present invention solves this kind of problem, and is a sleeve member capable of efficiently attaching and detaching two or more sleeve members coaxially provided on the block body with a simple structure. An object of the present invention is to provide a detachable pressing device.

[0006]

In order to achieve the above object, the present invention crimps and / or separates two or more sleeve members coaxially provided on a block body with respect to the block body. And a pressing device for attaching and detaching a sleeve member, wherein the pressing shaft is integrally movable in the axial direction of each sleeve member, and has a diameter corresponding to each sleeve member, and is detachably attached to the pressing shaft. Two or more pressing jigs that are aligned and held and press each of the sleeve members by advancing and retracting the pressing shafts, and the pressing jigs are arranged on the axis of the sleeve members to press the pressing shafts. And a movable clamp mechanism capable of retracting from the axis of the sleeve member while delivering the jig.

[0007]

In the above-mentioned pressing device, when the sleeve member is extracted, first, two or more pressing jigs are arranged on the shafts of the respective sleeve members through the movable clamp mechanism, The pressing jig is aligned and held integrally with the pressing shaft. Next, when the pressing shaft is moved back and forth, each pressing jig axially presses the corresponding sleeve member, and each sleeve member is pulled out from the block body.
For this reason, simply moving the single push shaft back and forth
The above-described work of removing the sleeve members is performed substantially at the same time, and it is possible to easily deal with various changes in the diameter of each sleeve member. Further, the work of press-fitting the sleeve member is performed promptly like the work of extracting the sleeve member, and as a result, the work of attaching and detaching the various sleeve members is made efficient at once.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sleeve member attaching / detaching device according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2, reference numeral 10
Shows a pressing device according to the present embodiment. The pressing device 10 is
As shown in FIGS. 2 and 4, a plurality of metal sleeve members 1 that are paired with each other and are coaxially press-fitted into an aluminum alloy cylinder block (block body) 12.
4a to 14c are used to remove from the cylinder block 12.

The pressing device 10 includes sleeve members 14
a pair of pressing shafts 16 that are integrally movable back and forth in the axial direction of a to 14c (direction of arrow A), and the sleeve members 14
a plurality of pressing jigs 18a to 18c each having a diameter corresponding to a to 14c and removably aligned and held on the pressing shaft 16, and the pressing jig 1
And a movable clamp mechanism 20 capable of disposing 8a to 18c on the axes of the sleeve members 14a to 14c.

As shown in FIG. 1, a cylinder 24 is horizontally fixed to one side of a pedestal 22 constituting the pressing device 10, and the pressing shaft 16 extends from the cylinder 24 in the direction of arrow A. Existence The pressing shaft 16 has a first diameter that gradually increases toward the cylinder 24 side.
It has rod part 26a-the 4th rod part 26d, and between the 1st rod part 26a and the 2nd rod part 26b, the 2nd rod part 2
6b and the third rod portion 26c and the third rod portion 26
c and the fourth rod portion 26d, the first step 28
a to the third step portion 28c are provided.

A shaft receiving member 30 is fixed to the other side of the frame 22 coaxially with the cylinder 24 for guiding the pressing shaft 16.

The movable clamp mechanism 20 has a support plate 32 fixed to a pedestal 22, and a lift cylinder 34 is held on the support plate 32 in a vertically upward direction. An elevating plate 38 is fixed to a rod 36 extending upward from the elevating cylinder 34, and a pair of guide rods 40 are provided on the elevating plate 38.

As shown in FIGS. 1 to 3, a pair of first clamp means 42a to third clamp means 42c are mounted on the elevating plate 38. As shown in FIG. 5, the first clamp means 42 a includes a clamp base 44 fixed onto the lift plate 38, and a semicircular arc surface 46 is formed on the upper part of the clamp base 44. A cylinder 48 is fixed alongside the clamp base 44, and a rod 50 extending upward from the cylinder 48 is guided by a guide post 52 and supports a clamp member 54 on the upper portion thereof. The clamp member 54 has a semi-circular arc surface 56 on the surface of the clamp base 44 facing the arc surface 46. Arc surface 46, 56
Is set according to the diameter of the pressing jig 18a gripped by them.

The second clamp means 42b and the third clamp means 42c are constructed in the same manner as the first clamp means 42a, and the same components are designated by the same reference numerals and detailed description thereof will be given. Is omitted.

The pressing jigs 18a to 18c have respective diameters set corresponding to the dimensions (diameters) of the sleeve members 14a to 14c, and the taper portions 58a to 58c are provided at the end portions in contact with the sleeve members 14a to 14c. Is formed. The pressing jig 18a is provided on the inner peripheral surface of the pressing jigs 18a to 18c.
An O-ring 60 for attaching a to 18c to the pressing shaft 16 is attached (see FIG. 3).

As shown in FIG. 1, a mounting base 62 for mounting the cylinder block 12 is provided on the mounting base 22, and a cylinder 64 is fixed on the mounting base 22 downward. A holding plate 68 is fixed to a rod 66 extending downward from the cylinder 64, and a pair of guide rods 70 is fixed to the holding plate 68.

The operation of the pressing device 10 thus constructed will be described below.

First, as shown in FIG. 1, after the cylinder block 12 is mounted on the mounting table 62, the holding plate 68 is lowered by the action of the cylinder 64, and the cylinder block 12 is moved by the holding plate 68. Pressed and held. Therefore,
The elevating cylinder 34 that constitutes the movable clamp mechanism 20 is driven, and the elevating plate 38 rises to move the first clamp means 42a.
~ Pressing jig 1 held by the third clamp means 42c
8a to 18c are arranged coaxially with the sleeve members 14a to 14c.

Then, under the action of the cylinder 24, the pressing shaft 16 advances toward the cylinder block 12 side (arrow A1 direction). The tip of the pressing shaft 16, that is, the position where the first rod portion 26a is inserted into the shaft receiving member 30 and the first step portion 28a to the third step portion 28c contact the end surfaces of the pressing jigs 18a to 18c. Then, the pressing shaft 16 is once stopped (see FIG. 2).

In this state, the holding action of the pressing jigs 18a to 18c by the first clamping means 42a to the third clamping means 42c is released. That is, as shown in FIG.
When the cylinder 48 is driven and the rod 50 is raised,
The clamp member 54 is separated above the pressing jigs 18a to 18c.

When the gripping action of the pressing jigs 18a to 18c is released, the cylinder 24 is driven and the pressing shaft 16 is driven.
Moves further in the direction of arrow A1. Therefore, the pressing jigs 18a to 18c that are in contact with the first step portion 28a to the third step portion 28c of the pressing shaft 16 move in the direction of the arrow A1 to press the end surfaces of the sleeve members 14a to 14c, The sleeve members 14a to 14c are pulled out from the cylinder block 12. The removed sleeve members 14a to 14
c is held in a state of being inserted into the pressing shaft 16 (see FIG. 6).

Further, the pressing shaft 16 is retracted (in the direction of arrow A2) via the cylinder 24, and the pressing jigs 18a to 18a-1.
8c is the first clamping means 42a to the third clamping means 42
When the position corresponding to c is reached, the cylinder 24 is temporarily stopped. At this position, the first clamp means 42a to the third clamp means 42a
The cylinder 48 constituting the clamp means 42c is driven, the clamp member 54 descends, and the pressing jigs 18a to 18c are clamped by the arc surface 46 of the clamp base 44 and the arc surface 56 of the clamp member 54.

Next, the pressing shaft 16 moves in the direction of arrow A2 and stops at the retracted end (see FIG. 1). This allows
Sleeve member 14a supported by the pressing shaft 16
14c fall off from the pressing shaft 16 and fall. On the other hand, when the pressing shaft 16 reaches the retracted end, the first clamp means 42a to the third clamp means 42c descend to the retracted end via the elevating cylinder 34, and the holding plate 68 rises to the retracted end via the cylinder 64. To do.

In this case, in this embodiment, a plurality of, for example, three pressing jigs 18a-18 are provided on the single pressing shaft 16.
With c being integrally aligned and held, the pressing shaft 16 is moved in the direction of arrow A1 under the action of the cylinder 24, and the pressing jigs 18a to 18c press-fit the cylinder shaft 12 coaxially with each other. A plurality of, for example, three sleeve members 14a to 14c that are provided can be removed from the cylinder block 12 at substantially the same time. As a result, the sleeve members 14a to 14c are different from those in which each sleeve member 14a to 14c is processed in a separate extracting process.
It is possible to obtain the effect that the work of extracting 14c can be performed easily and efficiently at once.

Further, in this embodiment, each sleeve member 1
Each pressing jig 18a-18c according to the diameter of 4a-14c
Set the diameter of. Therefore, the sleeve members 14a to 1
Even if the diameters of 4c are different from each other, and the sleeve members 14a to 14c having different diameters are arranged in a random order, the sleeve members 14a to 14c can be reliably pulled out. Moreover, there is an advantage that the entire structure of the pressing device 10 can be easily simplified.

In this embodiment, the sleeve member 14a
Although the work of pulling out the members 14a to 14c has been described, the sleeve members 14a to 14c can be efficiently pressed into the cylinder block 12 by the pressing device 10.

[0028]

According to the above-mentioned pressing device, the following effects and advantages can be obtained.

Two or more pressing jigs are aligned and held on a single pressing shaft.
The above sleeve members can be attached to and detached from the block body substantially at the same time. Further, even if the diameter of each sleeve member is variously changed, it is possible to easily cope with it, and the work of attaching and detaching various sleeve members can be efficiently performed at once.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a pressing device according to the present invention.

FIG. 2 is an enlarged view of a main part of the pressing device.

FIG. 3 is a partial front view of the pressing device.

FIG. 4 is a sectional view taken along line IV-IV of the cylinder block in FIG.

FIG. 5 is a partial explanatory view of a clamp means that constitutes the pressing device.

FIG. 6 is an enlarged view of an essential part for explaining the operation of the pressing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Pressing device 12 ... Cylinder block 14a-14c ... Sleeve member 16 ... Pressing shaft 18a-18c ... Pressing jig 20 ... Movable clamp mechanism 28a-28c ... Step part 38 ... Elevating plate 42a-42c ... Clamping means 62 ... Mounting table 68 ... Holding plate

Claims (1)

[Claims] 1. A pressing device for attaching / detaching a sleeve member for pressing and / or releasing two or more sleeve members coaxially provided on a block body with respect to the block body. A pressing shaft that is integrally movable back and forth in the axial direction of, and having a diameter corresponding to each of the sleeve members,
Two or more pressing jigs that are detachably aligned and held on the pressing shaft and press each of the sleeve members by advancing and retracting the pressing shaft; and the pressing jigs are arranged on the axis of the sleeve member to press the pressing members. While delivering the pressing jig to and from the shaft,
And a movable clamp mechanism that can be retracted from the axis of the sleeve member.