JP2015059007A - Joint link and chain conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint link which is securely engaged with a predetermined member with a simple structure while preventing an engagement member to be removed and is easily formed.SOLUTION: A joint link 1 of the invention is incorporated in a chain 2 and has an engagement member 10 which is engaged with a predetermined member 3. A screw part 10a is formed at the engagement member 10. The screw part 10a is threadedly engaged with a screw part 30a of the predetermined member 3 thereby allowing the engagement member 10 of the joint link 1 and the predetermined member 3 to securely engage with each other in a manner that prevents the members from being removed. Further, the structure allows the predetermined member 3 to be removed from the engagement member 10 as necessary.

Description

  The present invention relates to a joint link and a chain conveyor. More specifically, the present invention relates to a joint link having an engaging member incorporated in a chain and engaged with a predetermined member, and a chain conveyor using the joint link.

  As a conventional technique related to a joint link incorporated in a chain and having an engaging member for engaging a predetermined member, an engaging member for engaging a predetermined member 3 'as generally shown in FIG. A joint link 1 ′ having an attachment 10 ′ is known. The chain 2 in which such a joint link 1 ′ is incorporated is used for a chain conveyor, for example. The chain conveyor is generally engaged with a pair of chains 2 and 2, a joint link 1 ′ incorporated in each chain 2 and having an attachment 10 ′, and an attachment 10 ′ of the joint link 1 ′. And a connecting member 3 ′ that moves. Here, the connecting member 3 ′ of the chain conveyor corresponds to the predetermined member 3 ′ engaged with the attachment 10 ′ of the joint link 1 ′.

  The joint link 1 ′ shown in FIG. 8 includes a pair of link plates 11 ′ and 12 ′, and a roller link plate 23 ′ that is disposed at both ends between the link plates 11 ′ and 12 ′ and constitutes the chain 2. Each of the link plates 11 ′ and 12 ′ has a pin 13 ′ to be connected to each other, and a flange is provided on one side edge of the link plates 11 ′ and 12 ′ in the longitudinal direction (in FIG. A shaped attachment 10 'is formed so as to extend substantially at right angles to the roller link plate 23'. As shown in FIG. 8B, the attachment 10 'is formed with a hole 10a' through which a bolt or the like for fastening with the connecting member 3 'of the chain conveyor is inserted. Therefore, when the joint link 1 ′ shown in FIG. 8 is used, the side surface near the end of the connecting member 3 ′ of the chain conveyor is fastened to the attachment 10 ′ with a bolt or the like.

  And the chain 2 which comprises joint link 1 'comprised in this way, and comprises a chain conveyor is generally formed in cyclic | annular form, moved to the position which lowers from the position which loads a conveyed product, and the conveyed product was lowered | hung Drive control is performed in both directions so that the connecting member 3 ′ is reciprocated between the position and the return direction to the loading position.

  Patent Document 1 is known as another conventional technique related to the joint link. Patent Document 1 relates to a support structure for a shutter panel that is connected by a chain meshed with a panel drive system sprocket to open and close a doorway or window of a building, and includes a roller link plate and a pin link plate serving as a panel mounting location. The connected portion penetrates the portion and is connected by a long pin that also serves as a link pin having the same pitch as each link pin. The long pin includes a panel mounting shaft portion, a link connecting shaft portion, and a roller mounting shaft portion. Long pin support that is configured by being integrally formed on the same axis, the link connecting shaft part is inserted into the connected part of the roller link plate and the pin link plate, and the panel mounting shaft part is formed at both upper ends of the panel. It is disclosed that it is inserted and connected to a bush for use so as to be rotatable and movable in the thrust direction. Furthermore, in Patent Document 1, in order to open and close the shutter panel with respect to the entrance / exit of the building, the window, and the like, the panel drive system sprocket is activated to rotate forward / reversely in the same manner as the general prior art described above. That is, it is described that drive control is performed in both directions.

Japanese Utility Model Publication No. 5-44476

  However, among the above conventional techniques, in the joint link 1 ′ shown in FIG. 8, for example, an attachment 10 ′ to which a side surface in the vicinity of an end of a predetermined member 3 ′ such as a connecting member of a chain conveyor is fastened, It is away from a line (a chain line L shown in FIG. 8A) connecting the central axes of the pins 13 'disposed at both ends between the link plates 11' and 12 'and connected to the chain 2. Therefore, when a load such as a load of the conveyed product is applied to the connecting member 3 ′ of the chain conveyor, it acts as a moment as indicated by an arrow M in FIG. 8A, and as a result, the chain extending linearly. 2 would be bent carelessly, and there was a problem that the durability of the chain 2 was lowered, such as being worn away.

  Of the above conventional techniques, in Patent Document 1, the panel mounting shaft portion of the long pin is inserted into a bush for supporting the long pin formed in the upper end of the panel so as to be rotatable and movable in the thrust direction. When the shutter panel support structure is used in a chain conveyor, the long pin panel mounting shaft is used when the load placement position is different and the load balance changes. There was a problem that the support bush may come off and come off.

  And both the case where a chain conveyor is comprised using the chain 2 in which the joint link 1 'shown in the said FIG. 8 was integrated, and patent document 1 are controlled in both directions by the sprocket which drives a chain. For this reason, there is a problem that the control for accurately stopping the connecting member at the loading position and the unloading position is complicated, and the stop position has a large error.

The present invention has been made in view of the above-described problems. With a simple configuration, the present invention can be reliably engaged with a predetermined member without being disengaged, and can be easily configured. The purpose is to provide a joint link.
Further, the present invention has been made in view of the above-described problems, and can be reliably engaged with a simple configuration without disengaging the engaging member and the connecting member, and further, a position for loading a conveyed product. It is an object of the present invention to provide a chain conveyor that can stop the connecting member accurately and easily at the position where it is lowered.

In order to achieve the above object, the invention of the joint link according to claim 1 is a joint link having an engaging member incorporated in a chain and engaged with a predetermined member, wherein the engaging member is the predetermined member. A screw part to be screwed with the member is formed.
According to a second aspect of the present invention, there is provided a joint link according to the first aspect of the present invention. In the first aspect of the present invention, at least a pair of link plates, and the chain disposed at both ends between the link plates, respectively. And the engagement member is formed by extending the pin so as to exceed one of the link plates.
In order to achieve the above object, a chain conveyor according to claim 3 is engaged with a pair of chains, a joint link incorporated in each chain and having an engaging member, and an engaging member of the joint link. And a connecting member that moves in accordance with the driving of the chain, and a thread portion that is screwed to each of the engaging members and both ends of the connecting member is formed.
In order to achieve the above object, the chain conveyor according to claim 4 is the invention according to claim 3, wherein the chain in which the joint link is incorporated is formed in an annular shape and is driven to circulate in one direction. It is comprised so that when the said engagement member moves to a predetermined position, it further has the control means which stops the drive of the said chain, It is characterized by the above-mentioned.

According to the first aspect of the present invention, the predetermined member can be securely attached to the joint link incorporated in the chain with a simple configuration in which the engagement member is formed with the threaded portion that is screwed together with the predetermined member. It can be engaged and can be removed if necessary.
According to the second aspect of the invention, in the first aspect of the invention, the joint link can be easily configured with a simple configuration in which the engaging member is configured by extending the pin so as to exceed one of the link plates. Can do.
In the first and second aspects of the invention, when the male screw portion is formed on the engaging member, the female screw portion can be formed on the end surface of the predetermined member, and when the female screw portion is formed on the engaging member. The male screw portion can be formed on the predetermined member.
According to the invention of claim 3, the connecting members are connected to the joint links respectively incorporated in the pair of chains with a simple configuration in which the threaded portions that are screwed to each other are formed on the respective engaging members and both ends of the connecting member. Can be securely engaged at both ends, and can be removed if necessary.
According to the invention of claim 4, in the invention of claim 3, the chain in which the joint link is incorporated is formed in an annular shape and is configured to be driven to circulate in one direction. By stopping the driving of the chain when the member has moved to a predetermined position, the connecting member can be accurately and easily stopped at the position where the conveyed product is loaded onto the chain conveyor and the position where it is lowered.

It is the side view (a) shown in the state assembled in the chain in order to demonstrate one Embodiment of the joint link of this invention, the front view (b), and its sectional drawing (c). It is the schematic shown in order to demonstrate the whole installation using the chain conveyor of this invention. It is the front view shown in order to demonstrate one Embodiment in the case of using the chain conveyor of this invention as an elevator apparatus. FIG. 4 is a partial enlarged view of a main part of FIG. 3. FIG. 5 is a side view of FIG. 4. FIG. 5 is a plan view of FIG. 4. It is the expanded side view which showed another embodiment of the joint link in this invention. It is the side view (a) shown in the state assembled in the chain in order to explain the joint link which has the conventional general attachment, the front view (b), and its sectional view (c).

First, an embodiment of the joint link 1 of the present invention will be described with reference to FIG.
The joint link 1 of the present invention generally includes an engagement member 10 which is incorporated in a chain 2 and engaged with a predetermined member 3, and the engagement member 10 is screwed with the predetermined member 3. A screw portion 10a is formed.
Furthermore, the joint link 1 of the present invention has at least a pair of link plates 11 and 12 and pins 13 that are disposed at both ends between the link plates 11 and 12 and are respectively connected to the chain 2. The engaging member 10 is configured by extending the pin 13 so as to exceed one of the link plates 11 and 12.

  The chain 2 in which the joint link 1 is incorporated is configured by alternately joining a plurality of roller links 20 and a plurality of pin links 21. The roller link 20 includes a pair of roller link plates 23, a bush that integrally connects the two end portions of the roller link plate 23, and a roller 24 that is freely loosely fitted on the outer periphery of the bush. . The pin link 21 includes a pair of pin link plates 25 and link pins 26 arranged at both ends of the pin link plate 25. The end portion of the pin link plate 25 is disposed so as to overlap the end portion of the roller link plate 23 of the roller link 20, and the link pin 26 is inserted into the bush of the roller link 20 so as to be relatively rotatable. Yes. The end of the link pin 26 is fixed by being caulked with respect to the pin link plate 25 or the like. With such a configuration, the roller link 20 and the pin link 21 can be bent around the link pin 26 in the chain 2.

  The joint link 1 includes a pair of link plates 11 and 12, a pin 13 that flexibly connects both end portions of the link plates 11 and 12 and the roller link plate 23 of the chain 2, and a link provided on one link plate 11. The joint member 10 is provided. The link plate 10 is formed in substantially the same shape as the pin link plate 25 of the chain 2. Also, one pin 13A of the joint link 1 is configured in the same manner as the link pin 26 of the chain 2, and the end portion on one side of the link plate 11 on which the one pin 13A is disposed is One end portion of the roller link 20 is disposed so as to overlap the end portion of the roller link plate 23, and one pin 13 </ b> A is inserted into the bush of the roller link 20 so as to be relatively rotatable.

  On the other hand, the other pin 13B of the joint link 1 is integrally formed with the engaging member 10 on a coaxial extension line in this embodiment. The distal end of the other pin 13B is inserted into the one link plate 11, and the proximal end of the other pin 13B (with the proximal end of the engaging member 10 in contact with the outer surface of the one link plate 11) The end of the engaging member 10 on the side continuous with the base end is fixed to the one link plate 11 by caulking or the like. That is, the engaging member 10 is integrally formed by extending the pin 13B so as to exceed one of the link plates 11 and 12. Further, one end of one pin 13A is also fixed to the one link plate 11 by being caulked.

  The tip portions of both pins 13A and 13B are inserted into the other link plate 12, and are locked by clips 14 in this embodiment. Note that a split pin or the like can be used instead of the clip 14.

  In the embodiment shown in FIG. 1, the male screw 10 a is formed on the peripheral surface of the engaging member 10, the hole 30 is formed on the end surface of the predetermined member 3, and the inner peripheral surface of the hole 30 is engaged. A female screw 30a that can be screwed with the male screw 10a of the member 10 is formed. In the embodiment shown in FIG. 1, a lock nut 15 is screwed onto a male screw formed on the engaging member 10. The present invention is not limited to this embodiment, and a male screw is formed at the end of the predetermined member 3, and the engagement member 10 is molded to an appropriate diameter to form a hole in the end surface. And the internal thread which the external thread of the predetermined member 3 can screw together can also be formed in the internal peripheral surface of a hole.

  The joint link 1 can be configured such that it is connected to both ends of a single chain 2, that is, the chain 2 is configured in an annular shape. However, in the present invention, the ends of both the chains 2 and 2 are respectively connected to the ends of the joint links 1 so that the joint links 1 are interposed between the different chains 2 and 2. The case where the chain 2 of books is comprised can also be included. The joint link 1 of the present invention includes a case where a plurality of joint links 1 are provided in an annular chain 2 and a case where a plurality of joint links 1 are provided in one chain 2 having both ends as a whole. It is. Further, the joint link 1 of the present invention is configured by a number of link plates 11, 12,... Corresponding to the chain 2 when the chain 2 to be incorporated is configured in a plurality of rows.

  Furthermore, as shown in FIG. 7, the engaging member 10 of the joint link 1 of the present invention is located at a position on the line connecting the central axes of the pins 13A and 13B (see the chain line L in FIGS. 1 and 7). If it exists, it is not limited to integrally forming on one pin 13A or 13B on a coaxial extension line, but can also be provided on the link plate 11 or 12 between both pins 13A and 13B, for example by welding.

Next, one embodiment of the chain conveyor 5 of the present invention will be described with reference to FIGS. In addition, about the joint link 1 used for the chain conveyor 5 of this invention, the same code | symbol is attached | subjected about the part similar to the joint link 1 mentioned above, or the corresponding part, and the description is abbreviate | omitted.
The chain conveyor 5 of the present invention is roughly engaged with a pair of chains 2 and 2, a joint link 1 incorporated in each chain 2 and 2, and an engagement member 10 provided on each joint link 1. The connecting member 3 that moves in accordance with the driving of the connecting member 3 is formed, and threaded portions 10 a and 30 a that are screwed to each other are formed on the engaging members 10 and 10 and both ends of the connecting member 3.
Furthermore, the chain conveyor 5 of the present invention is configured such that the chain 2 in which the joint link 1 is incorporated is formed in an annular shape and is driven to circulate in one direction, and the engagement member 10 (that is, the coupling member 10) There is further provided control means for stopping the driving of the chain 2 when the member 3) is moved to a predetermined position.

  In this embodiment, as the chain conveyor 5 of the present invention, as shown in FIG. 2, an elevator 5A that moves up and moves a conveyed product P transferred from a carriage 60 and carried in by a roller base 61 or the like, or the elevator 5A The case of the elevator 5 </ b> B that moves the conveyed product P moved in the substantially horizontal direction by the roller table 62 and the like downward will be described.

  The elevator 5 includes a frame 50, a guide rail 51 that is held in the vertical direction by the frame 50, an elevator base 52 that is vertically moved along the guide rail 51, and a pair of chains 2 on which the pair of chains 2 are hung. A sprocket 53 and drive means 54 for rotating and driving at least one of the sprockets 53 are provided, and the elevator base 52 is connected to the joint links 1 and 1 incorporated in the chains 2 and 2 respectively. It is supported.

  When the joint link 1 configured as described above is incorporated into the chain 2 and the engaging member 10 is engaged with the connecting member 3, the threaded portion 10 a of the engaging member 10 is first replaced with the threaded portion of the connecting member 3. The pin 13 fixed to the link plate 11 on the side provided with the engaging member 10 is inserted into the bush of the roller link 20 at the end of the chain 2, and the tip of the pin 13 is connected to the other side. It can be inserted into the link plate 12 and stopped by a clip 14 or the like.

  The elevator table 52 is in relation to the roller table 520 on which the conveyed product P is placed, the guide roller 521 for guiding the horizontal position of the conveyed product P moved by the roller table 520 from both sides, and the guide rail 51. A guide wheel 522 is provided in contact therewith. The roller table 520 is provided at an intermediate portion of the vertical frame 52a so as to be inclined at a predetermined angle so as to be lowered from the right to the left in FIG. The guide roller 521 is provided at the upper end of the vertical frame 52a. As shown in the plan view of FIG. 6, a support shaft 523 is provided at an angle of 90 degrees with each other above and below the vertical frame 52a, and a guide wheel 522 is rotatably supported by each support shaft 523. And is configured to roll with respect to the guide rail 51. Although illustration is omitted, the elevator base 52 can be provided with a stopper that allows the conveyed product P placed on the inclined roller base 520 to move at an arbitrary timing.

  A roller 31 is provided at a position of the connecting member 3 corresponding to the horizontal frame 52 b on the lower surface of the elevator stand 52.

  The drive means 54 is configured by an electric motor that rotates in one direction. Therefore, the chain 2 hung between the sprockets 53 is circulated and driven only in one direction as shown in FIG. Then, as shown by a two-dot chain line in FIG. 3, the control means is arranged when the connecting member 3 engaged with the engaging member 10 of the joint link 1 is located at the top dead center and the bottom dead center, that is, the elevator. When the stage 52 moves to the uppermost position and the lowermost position, the driving of the motor 54 is stopped. Specifically, this control means can be constituted by a limit switch or the like.

  In the elevator 5 </ b> A shown in FIG. 2, the lowermost position of the elevator platform 52 (the position where the conveyed product P is loaded) is transferred from the carriage 60 and moved by the inclination of the roller platform 61. 4 is set to such a height as to be transferred from the right side, and the uppermost position of the elevator table 52 (the position where the conveyed product P is lowered) is transferred from the roller table 520 to the roller table 62 where the conveyed product P is inclined. It is set to such a height. Further, the elevator 5B shown in FIG. 2 has such a height that the uppermost position of the elevator stand 52 (position where the conveyed product P is loaded) is transferred from the inclined roller stand 62 to the roller stand 520 of the elevator stand 52. Further, the lowest position of the elevator table 52 (position where the conveyed product P is lowered) is set to such a height that the conveyed product P is transferred from the roller table 520 of the elevator table 52 to the inclined roller table 63. ing. The heights of the lowermost position and the uppermost position of the elevator stands 52 of both the elevators 5A and 5B can be easily set by the position of the sprocket 53. The length of the chain 2 can be adjusted by changing the position of the sprocket 53.

  It should be noted that a counterweight for offsetting the weight of the elevator platform 52 and the conveyed product P can be provided depending on the weight of the conveyed product P, the driving ability of the motor 54, and the like.

  Next, the operation of the chain conveyor 5 configured as described above will be described in the case of the elevator 5A. Initially, in the state where the conveyed product P is loaded, the connecting member 10 is stopped at the lowest position of the annular chain 2 in which the joint link 1 is incorporated and hung on the sprockets 53 and 53. When the conveyed product P is transferred to the elevator platform 52, the motor 54 is rotationally controlled, and the chain 2 is circulated by the sprocket 53. Thereby, the connection member 3 screwed together with the engaging member 10 of the joint link 1 incorporated in the chain 2 raises the elevator stand 52 on which the horizontal frame 52b is supported. When the elevator base 52 reaches the uppermost position due to the upward movement of the connecting member 3, the drive of the motor 54 is stopped by the limit switch. The conveyed product P moves on the roller base 52 inclined by its own weight by releasing the stopper, and moves down to the roller base 62 that is lowered from the elevator base 52 and spanned between the elevator 5B. When the conveyed product P is lowered from the elevator pedestal 52, the motor 54 is controlled to rotate again, and the chain 2 is circulated by the sprocket 53. At this time, as indicated by a chain line in FIG. 4, the connecting member 3 moves relative to the horizontal frame 52 b of the elevator base 52 by the diameter of the sprocket 53. This movement is smoothly performed by the roller 31 provided on the connecting member 3 rolling on the lower surface of the horizontal frame 52b. When the elevator stand 52 is lowered and reaches the lowest position, the drive of the motor 54 is stopped by the limit switch, and the preparation for loading the next conveyed product P is completed.

  When the chain conveyor 5 of the present invention is used as an elevator, since the connecting member 3 supports the elevator platform 52, the joint link 1 is incorporated into the chain 2 as a single unit. However, the chain conveyor 5 of the present invention is not limited to an elevator for moving the conveyed product P up and down, and includes cases in which the conveyed product P is configured to convey the conveyed product P in a horizontal direction other than the moving up and down. Can do. In this case, the conveyed product P is pushed by the connecting member 3 from the rear in the movement direction or moved from the front in the movement direction. In this case, a plurality of joint links 1 can be incorporated into the chain 2, and the connecting member 3 can be screwed to the engaging member 10 of each joint link 1.

  In the joint link 1 of the present invention, the engaging member 10 is formed with a threaded portion 10a that is screwed with a threaded portion 30a of a predetermined member (a connecting member when used in a chain conveyor) 3. It is possible to reliably prevent the member 10 and the predetermined member 3 from being inadvertently detached. The joint link 1 of the present invention can be used in addition to the chain conveyor 5 described above.

  DESCRIPTION OF SYMBOLS 1: Joint link, 2: Chain, 3: Predetermined member or connecting member, 5: Elevator (chain conveyor) 10: Engagement member, 10a: Screw part, 30a: Screw part, 11, 12: Link plate, 13: pin

Claims (4)

A joint link having an engagement member incorporated in a chain and engaged with a predetermined member;
The joint link is characterized in that the engaging member is formed with a threaded portion to be screwed with the predetermined member. At least a pair of link plates, and pins disposed at both ends between the link plates and connected to the chain, respectively.
The joint link according to claim 1, wherein the engagement member is configured by extending the pin so as to exceed one of the link plates. A pair of chains, a joint link incorporated in each chain and having an engaging member, and a connecting member engaged with the engaging member of the joint link and moving as the chain is driven,
A chain conveyor characterized in that a thread portion that is screwed together is formed on each of the engaging members and both ends of the connecting member. The chain in which the joint link is incorporated is formed in an annular shape and is configured to be circulated in one direction.
The chain conveyor according to claim 3, further comprising control means for stopping driving of the chain when the engagement member moves to a predetermined position.