JPH0640353Y2 - Chain with linked links of the same shape - Google Patents

Description

TECHNICAL FIELD The present invention relates to a chain configured by connecting links of the same shape.

2. Description of the Related Art Conventional technology and its problems Conventionally, an example of a chain formed by connecting links having the same shape is disclosed in Japanese Patent Laid-Open No. 2-113147.
The chain 30 (see FIGS. 22 and 23) includes a main body 31 and
Curved portions 32, 32 protruding from the main body 31 are integrally formed with a connecting piece 34 having a neck portion 33 having a diameter smaller than the curved portion between the curved portions 32, 32, respectively. The recessed portion 35 that is recessed, the narrow portion 36 that is continuous with the recessed portion 35 and that receives the neck portion 33 at the position opposite to the connecting piece 34, and the recessed portion 35 that protrudes from both sides of the recessed portion 35 in the vicinity of the narrowed portion 36 in an eaves shape. It is composed of a link 38 formed with a retaining portion 37, 37 for covering, and the connecting piece 34 of the adjacent link is inserted into the recess 35 in a state where the adjacent links are bent (see FIG. 22) to prevent retaining. The neck portion 33 is received by the narrow width portion 36 and the links 38 are connected to each other by moving the portion 37 to the lower side and bringing it closer to the straight state than the bent state.

The curved surface portions 32, 32 of the link 38 are pulled out from under the retaining portion when the chain on the right side pushes the link on the left side in FIG.
May be moved to the left of 35.

For this reason, this chain 30 has a problem that at the connecting portion between the links, it floats to the upper end side of FIG. 22, the linking state of the link bends in a V shape, and the linking on the same side is disconnected. is doing.

Further, since the retaining portion 37 is a small piece, it has a problem that it may be broken due to bending of the links.

On the other hand, as shown in FIG. 24, there is a multi-row chain 40. The multi-row chain 40 is composed of a plurality of chains 41, 41. Each chain 41 (see FIGS. 25 and 26) is a connecting link to a receiving portion 43 formed in the slat member 42.
The plurality of slat members 4 are engaged with each other to prevent the retaining portions 45, 45 protruding from both sides of the receiving portion 43 in an eaves-like shape from coming off.
It is configured by connecting two. This multi-row chain 40 is
The speeds of the respective chains 41 are the same, and the chains 41 are circulated and moved as if they were one chain, and convey the conveyed objects.

However, in the multi-row chain 40, when the conveyed objects are circulated and moved, the circulating movement speeds of the chains 41 are different from each other, and when the chains 41 are displaced from each other in the longitudinal direction, the deviation causes the conveyance during the conveyance. There are problems that the direction of the article is changed and the conveyed article is overturned.

Means for Solving the Problems The first aspect of the present invention is to integrally integrate a main body and a connecting piece having a protrusion protruding from the main body on both sides and a neck having a diameter smaller than that of the protrusion at the base. Further, a concave portion in which each of the protrusions is recessed, a narrow portion which is continuous with the concave portion and receives the neck portion at a position opposite to the connecting piece, and an eave shape from the concave portion. Links that project to form a retaining portion that covers the recess are connected, and in adjacent links, the protrusion of one link is received in the recess of the other link and the neck of the one link is the other. Is received in the narrow portion of the link, the eaves-shaped retaining portion projects in the width direction over the entire length of the recess, and the distance between the tips is greater than the distance between the protrusions over the length of the recess. Small configuration Secondly, a plurality of chains each having an engaging portion formed on one side surface of the link of the first chain and an engaged portion formed on the other side surface thereof are arranged in parallel by the chain of Thirdly, by the multi-row chain having a structure in which the engaging portion and the engaged portion of the links adjacent to each other in the intersecting direction are engaged with each other and the chains are connected to each other,
A plurality of chains are arranged in parallel, by a joint link formed by integrally linking adjacent links in a direction intersecting the longitudinal direction of the chain, by a multi-row chain configured to connect the chains to each other, It solves the problem of.

In order to connect the links into the first chain, first, the adjacent links are bent and the protrusions on both sides of the adjacent links are oriented in the link arranging direction. Insert the connecting piece of. Next, the adjacent link is rotated in a bent state, and the protrusion of the adjacent link is immersed in the recess.

Finally, the links are brought closer to the straight state than the bent state, and the neck portions of the adjacent links are put in the narrow portions.

In this way, the links are sequentially linked to form a chain.

Therefore, in order to disconnect the link of the first chain, the procedure opposite to the above is performed, that is, after returning the links to the mutually bent state, one of the links is rotated in this bent state, It cannot be removed unless the protrusion is pulled out from under the retaining part.

The second multi-row chain is the first one assembled according to the procedure described above.
It is possible to assemble the chains by arranging a plurality of the chains in parallel in parallel with each other and engaging the engaging portion and the engaged portion of the adjacent links in the direction intersecting the longitudinal direction of the chains with each other.

Therefore, according to the second multi-row chain, the shift between the adjacent chains caused by the difference in the circulating movement speed between the chains is restricted by the contact between the engaging portion and the engaged portion.

The third multi-row chain can be assembled by connecting the links in the same procedure as the first chain and connecting the joint links at appropriate positions.

Therefore, according to the third multi-row chain, the deviation between the adjacent chains caused by the difference in the circulating movement speed between the chains and the deviation in the direction intersecting the longitudinal direction of the chains are regulated by the joint link. It

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show a link 50 which constitutes the chain of the first embodiment.

In the link 50, the connecting piece 51 and the main body 52 are integrally molded,
Chain 53 when connected.

The connecting piece 51 projects from the main body 52, and projecting projections 54, 54 are formed on both sides in the connecting direction. or,
The neck portion 55 at the base has a narrow diameter smaller than the distance between the protrusions 54, 54.

The main body 52 is a portion that receives and engages the connecting piece 51 of the adjacent link, and is continuous with the recesses 56 and 56 in which the protrusions 54 and 54 are recessed and the recesses 56 and 56 at the position opposite to the connecting piece 51. The narrow portion 57 that receives the neck portion 55 and the concave portion 5 that protrudes from each concave portion 56, 56 in an eaves shape.
The retaining portions 58, 58 that cover 6 are formed. The distance between the two retaining portions 58, 58 is the same as the width of the narrow portion 57.
Therefore, the eaves-shaped retaining portions 58, 58 project in the width direction over the entire length of the recesses 56, 56, and the intervals between the tips thereof are recessed.
It is smaller than the interval between the protrusions 54, 54 over the entire length of 56, 56. The narrowed portion 57 is formed with sloping surfaces 59, 59 that spread out toward the end. When the links adjacent to each other in the longitudinal direction of the chain come close to each other, the inclined surface 59 is a main body of the adjacent link.
This is the part that contacts 52.

Next, the procedure for connecting the first link 150 and the second link 250 to form the chain 53 will be described with reference to FIGS. 5 and 6. For convenience of explanation, the first and second links 150,
For each part relating to 250, numerals 1 and 2 are added to the heads of the reference numerals in FIGS. 1 to 4, respectively.

First, the first and second links 150 and 250 are set at a substantially right angle to each other and the protrusions 254 and 254 on both sides of the second link 250 are oriented in the link arrangement direction, and the retaining portions 158 and 158 of the first link 150 are arranged.
The connecting piece 251 of the second link 250 is inserted between them.

Then, the second link 250 is rotated about 90 degrees around its longitudinal axis in the direction of arrow A while maintaining the right angle state, and the second link 250 is rotated.
The projections 254, 254 of 250 are immersed in the recesses 156, 156.

After that, when the second link 250 is tilted in the direction of arrow B from the right angle state, the neck portion 255 enters the narrow portion 157, the two links 150 and 250 are in a straight line state, and the connecting and assembling is completed.

After that, in the same manner, the protrusions of the third link (not shown) are recessed in the recesses 256, 256, and the links are sequentially connected to form the chain 53.

Even if the chain assembled in this way bends in the direction that floats above the paper surface of FIG.
Since 254, 254 abut on the retaining portions 158, 158, the link does not come off.

To remove the second link 250 from the first link 150, the assembly procedure described above must be reversed. That is, after the second link 250 is returned to the original bent state, the second link 250 is rotated about 90 degrees around its longitudinal axis in the bent state, and the protrusion 154 is pulled from below the retaining portion 158. You cannot disconnect the links 150 and 250 unless you pull them out.

When it is pulled and used as shown in FIG. 6, the connecting piece 251 engages with the narrow portion 157 to prevent the connecting piece 251 from coming off in the connecting direction.

Therefore, the chain 53 of the first embodiment has the following advantages.

The links do not disengage from each other during the cyclic movement of the chain.

Since the retaining portion is firmly formed so as to cover the entire concave portion, it does not break even if it is pressed by the protrusion due to the rising and bending of the chain.

Since the link has a simplified shape and only the links having the same shape are used, the number of parts is small, and the die cost and the cost are reduced.

It is possible to put a conveyed item on the link, and the twist of the chain is corrected.

When the link is made of ceramic, the friction coefficient is high, and the driving force can be applied by the pinching drive mechanism C (see FIG. 6) which holds the chain from both sides and applies the driving force to the chain. Further, since it is easily bent, it can be used by being directly wound around the driving and driven drums.

Being made of ceramic, it can be used in a high temperature place such as a furnace.

When driven by the pinching drive mechanism, engaging and recessing portions may be formed on both sides of the link.

7 to 9 show a link 350 which constitutes the chain of the second embodiment. This chain 370 is a multi-row chain. Therefore, the link 350 has a shape that can be used for the chain 353 for the multi-row chain 370.

This link 350 is also similar to the link 50 of the chain of the first embodiment, the connecting piece 351, the main body 352, the protrusions 354, 354, the neck 35.
5, recessed portions 356, 356, narrow portion 357, retaining portions 358, 358.

Furthermore, an engaging portion 360 is provided on one side surface of the link 350,
Engagement portions 361 are formed on the other side surface, respectively.

The engaging portion 360 is a trapezoidal protrusion formed by the inclined surface 362 and the vertical surface 363. The engaged portion 361 is a trapezoidal concave portion formed by the inclined surface 364 and the vertical surface 365. Vertical 3
63 and 365 are surfaces substantially perpendicular to the moving direction of the multi-row chain 370.

The links 350 are also connected to each other by the same procedure as the link 50 of the chain of the first embodiment to form the chain 353.

The multi-row chain 370 (see FIG. 10) has a plurality of chains 353 arranged in parallel one after another while engaging the engaging portion 360 and the engaged portion 361 of adjacent links in the direction intersecting the longitudinal direction of the chain. They are assembled together.

The link pitch error is absorbed by the gap between the engaging portion 360 and the engaged portion 361.

The multi-row chain 370 is wound around a drum (not shown) and used as a conveyor belt. Drums and multi-row chains
If there is a difference in circulating movement speed between adjacent chains 353 due to slippage with 370, the chain that is trying to move ahead
Since the vertical surface 365 of 353 abuts the vertical surface 363 of the adjacent link,
The running of the chain 353, which is about to precede, is restricted.

Further, the engaging portion 360 and the engaged portion 361 are in contact with each other at the inclined surfaces 362 and 364, and also serve to regulate the lifting of the chain 353.

Both sides of the multi-row chain 370 are guided by rails or bearings (not shown), and the positions of the chains 353 are displaced in the width direction, so that the engagement between the engaging portions and the engaged portions is released. There is no.

Incidentally, the engaging portion and the engaged portion are, like the link 450 shown in FIG. 11 to FIG. 13, the engaging portion 460 of the circular protrusion, and the engaging portion 46.
The engaged portion 461 may be a round hole into which 0 is inserted.

14 to 19 show a link 550 which constitutes the chain 553 of the third embodiment (see FIG. 19).

This link 550 (see FIG. 14) also has a connecting piece 551, a body 552, and
It has protrusions 554, 554, a neck 555, a recess 570, a narrow portion 557, and a retaining portion 571.

However, although the recess 56 and the retaining portion 58 of the link 50 of the first embodiment are formed separately on both sides of the main body of the link 50, the recess 570 and the retaining portion 571 of this link 550 are substantially formed on the main body 552. The shapes are different in that they are continuously formed in an arc shape. However, in this case as well, the eaves-shaped retaining portion 571 has the recess 570.
Of the recessed portion 570 along the entire longitudinal direction of the concave portion 570 and the protrusions 554, 554
Less than the interval between.

Next, a procedure for connecting the first link 650 and the second link 750 to form the chain 553 will be described with reference to FIGS. 15 to 19. For convenience of description, the first and second links 65
For each part related to 0,750, the numbers at the beginning of the reference numerals in FIG.

First, with the first and second links 650 and 750 being substantially perpendicular to each other and the protrusions 754 and 754 on both sides of the second link 750 being directed in the link arranging direction, the second link 750 is indicated by arrows in FIGS. 15 and 16. The protrusion 754 of the second link 750 is inserted into the recess 670 of the first link 650 by advancing into the main body 652 of the first link 650 from the D direction.

Then, the second link 750 is rotated approximately 90 degrees in the direction of arrow E about the longitudinal axis of the second link 750 while keeping the right angle state.
Both protrusions 754, 754 of the 750 are immersed in the recess 670.

Thereafter, when the second link 750 is tilted in the direction of arrow F from the right angle state, the neck portion 755 enters the narrow portion 657, the two links 650 and 750 are in a straight line state, and the connecting and assembling is completed.

After that, in the same manner, the projection of the third link (not shown) is set in the recess of the second link, and the links are sequentially connected to form a chain 553.

Even if the chain assembled in this way bends in the direction in which it floats above the plane of the paper in Figure 19, the protrusion
Since 754 and 754 contact the retaining portion 671, the link does not come off.

To remove the second link 750 from the first link 650, the assembly procedure described above must be reversed. That is, after the second link 750 is returned to the original bent state, the second link 750 is rotated about 90 ° around its longitudinal axis in the bent state, and the second link 750 is placed under the retaining portion 671 of the first link. The links 650 and 750 cannot be removed from each other unless the protrusion 754 is pulled out from the link.

When it is pulled and used as shown in FIG. 19, the connecting piece 751 engages with the narrow portion 657 to prevent the connecting piece 751 from coming off in the connecting direction.

The chain 553 of the third embodiment is the chain 5 of the first embodiment.
In addition to having the same advantages as the third embodiment, they have the advantage that they can be easily connected and assembled to each other as compared with the first embodiment. That is,
In FIG. 15, one protrusion 754 of the second link 750 is inserted under the retaining portion 671 of the first link, and then the second link 750 is inserted.
When is rotated in the direction of arrow E, naturally the other protrusion 754
This is also because it is inserted into the retaining portion 671 of the first link.

FIG. 20 shows the chain of the fourth embodiment. This chain 85
3 is a multi-row chain.

This chain 853 has a link 850 having the same shape as the link 550 constituting the chain 553 of the third embodiment, and a joint link 950 having a shape in which a plurality of chains 553 of the third embodiment are arranged and adjacent links 553 are integrated. It consists of and.

Like the link 550, the links 850 and 950 are connecting pieces.
851,951, main body 852,952, protrusion 854,954,954,954, neck 85
5,955, narrow part 857,957, concave part 870,970, retaining part 871,9
Have 71.

The procedure for connecting the links 850 to each other is the same as the link in the third embodiment.

The connection between the joint link 950 and the link 850 is performed by incorporating the link 850 into the joint link 950.

Since the chain 853 of the fourth embodiment incorporates the joint link 950, it is not always necessary to provide guides on both sides of the chain 853. Further, the link 850 can be used when assembling one chain, and the link can be effectively used.

In addition, the joint link is not limited to two single links
As shown in FIG. 21, three joint links 1050 may be integrated.

These links 350, 450, 550, 850, 950, 1050 can also be made of ceramic.

Effects of the Invention According to the chain of claim 1 in which the links of the same shape according to the present invention are connected, the following effects are obtained.

Even if the pressing force is applied in the longitudinal direction of the chain and the subsequent link presses the front link and the chain floats and bends, the protrusion contacts the retainer and the links are disconnected. There is no such thing.

Since the shape of the link is simplified and only the links having the same shape are used, the cost of the die and the cost can be reduced.

Since it is possible to place the transported object on all the links, the twist of the chain is corrected.

According to the multi-row chain of claim 2, in addition to the effects described above, even if there is a difference in circulating movement speed between the chains forming the multi-row chain, the engaging portion and the engaged By the engagement with the joint portion, it is possible to restrict the traveling of the chain that is about to precede, and it is possible to smooth the circulation movement of the entire multi-row chain.

Further, according to the structure of claim 3, the inclined surfaces of the links adjacent to each other in the direction intersecting the longitudinal direction of the chain are brought into contact with each other, and the floating of the chain can be prevented.

Moreover, according to the structure of Claim 4, the following effects are produced.

In addition to the above effects and effects, since the chains are connected to each other by the joint link, the deviation between the adjacent chains caused by the difference in the circulating movement speed between the chains and the deviation in the direction intersecting the longitudinal direction of the chains And are restricted, and the circulation movement of the entire multi-row chain can be facilitated.

Since the chains are connected by the joint links, it is not always necessary to provide guides for guiding the multi-row chain on both sides of the multi-row chain.

Finally, if the link is made of a ceramic molded product as in claim 5, the friction coefficient is high and the driving force of the pinching drive mechanism that applies the driving force by sandwiching the chain from both sides can be received. Further, there is an effect that it can be used by being directly wound around the driving and driven drums.

It can be used in high temperature places such as furnaces.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a link constituting a chain according to a first embodiment of the present invention, FIG. 2 is a left side view of FIG. 1, and FIG.
FIG. 4 is a right side view of the drawing, FIG. 4 is a cross-sectional view taken along arrow 4-4 in FIG. 1, FIG. 5 is an explanatory view of the link connecting operation, and FIG. 6 is a plan view of the chain of the first embodiment, FIG. Is a rear view of one of the links forming the chain of the second embodiment, FIG. 8 is a plan view of the chain forming the multi-row chain, and FIG. 9 is one of the links of FIG. FIG. 10 is a front view of the link, and FIG. 10 is a plan view of a multi-row chain that is the chain of the second embodiment.
FIG. 11 is a rear view of another form of the link which constitutes the chain of the second embodiment, and FIG. 12 is a rear view of one of the links of FIG. 12, and FIG. Plan view of one of the row chains, Figure 13 shows
FIG. 12 is a front view of one of the links in FIG. 12, FIG. 14 is a plan view of the links constituting the chain of the third embodiment, FIGS. 15 to 18 are explanatory views of the link connecting operation, and FIG. 19 is the third embodiment. Fig. 20 is a plan view of an example chain, Fig. 20 is a plan view of a multi-row chain that is the chain of the fourth embodiment, and Fig. 21 is a partial plan view of a multi-row chain when the connecting links are different in the chain of the fourth embodiment. It is a figure. FIG. 22 is an explanatory view of a conventional chain link connecting operation,
FIG. 23 is a plan view of FIG. 22, FIG. 24 is a bottom view of a conventional multi-row chain, FIG. 25 is a plan view of links constituting the multi-row chain of FIG. 24, and FIG. 26 is of FIG. FIG. 25 is a sectional view taken along the line 25-25. 50,150,250,350,450,550,650,750,850 ... Link 51,151,251,351,551,751,851,951 ... connecting piece 52,152,252,352,552,652,752,852,952 ... body 53,153,253,352,553 ... Chain 54,154,254,354,554,754,854,954 ... projections 55,155,255,355,555,855,955 ... neck 56,156,256,356,570,670,870,970 ... recess 57,157,257,357,557,657,857,957 ... narrow part 58,158,258,358,571,671,871,971 ... retaining portion 370,853 ... multi-row chain, 360,460 ... engagement portions 361,461 ... engaged portion 362,364… Inclined surface 363,365… Vertical surface 950,1050… Joint link

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Tomoyuki Saji 4-17-96 Tsurumi, Tsurumi-ku, Osaka City, Osaka Prefecture Tsubakimoto Chain Co., Ltd. (56) Reference JP-A-2-113147 (JP, A)

Claims (5)

[Scope of utility model registration request] 1. A main body and a connecting rod which protrudes from the main body and has projections on both sides and necks each having a diameter smaller than the space between the projections are integrally formed, and the main body further comprises:
A recess into which each of the protrusions is recessed, a narrow portion that is continuous with each of the recesses and that receives the neck portion at a position opposite to the connecting piece, and a retaining portion that protrudes from each of the recesses and covers the recess. Links formed by and are connected, and in adjacent links, the protrusion of one link is received in the recess of the other link and the neck of the one link is received in the narrow part of the other link. The chain is characterized in that the eaves-like retaining portion projects in the width direction over the entire length of the recess, and the interval between the tips is smaller than the interval between the protrusions over the entire length of the recess. 2. A plurality of chains each having an engaging portion formed on one side surface of the link and an engaged portion formed on the other side surface thereof are arranged in parallel and are adjacent to each other in a direction intersecting the longitudinal direction of the chain. A multi-row chain characterized in that the engaging portion and the engaged portion of a mating link are engaged with each other and the chains are connected to each other. 3. The chain according to claim 2, wherein the engaging portion and the engaged portion have a vertical surface that is substantially perpendicular to the moving direction of the chain and an inclined surface. 4. The chain is connected to each other by a joint link formed by integrally forming adjacent links in a direction intersecting the longitudinal direction of the chain in a state where a plurality of the chains of claim 1 are arranged in parallel. Characterized by that
Multi-row chain. 5. The link is made of ceramic.
1, 2, 3 or 4 chains.