CA2015641A1 - Apparatus for fixing fasteners on a conveyor belt or the like - Google Patents
Apparatus for fixing fasteners on a conveyor belt or the likeInfo
- Publication number
- CA2015641A1 CA2015641A1 CA 2015641 CA2015641A CA2015641A1 CA 2015641 A1 CA2015641 A1 CA 2015641A1 CA 2015641 CA2015641 CA 2015641 CA 2015641 A CA2015641 A CA 2015641A CA 2015641 A1 CA2015641 A1 CA 2015641A1
- Authority
- CA
- Canada
- Prior art keywords
- fasteners
- staples
- operating head
- movable bar
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000003100 immobilizing effect Effects 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000000875 corresponding effect Effects 0.000 description 7
- 230000037431 insertion Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G3/00—Belt fastenings, e.g. for conveyor belts
- F16G3/16—Devices or machines for connecting driving-belts or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A row of fasteners provided with staples placed in a standby position is fixed on the end of a conveyor belt by means of a stationary operating head comprising a staple-inserting punch, a movable die having the function of bending-back the staple ends, a frame which can be installed at a fixed point on any suitable support such as a bench, a guide on which is slidably mounted a movable bar having the function of a support for the end of a conveyor belt and for the row of fasteners to be fixed thereon. The movable bar is provided with a series of uniformly spaced openings for receiving the heads of the staples which initially project from one of the arms of the fasteners. The operating head is also provided with means for immobilizing the movable bar in each successive useful position of cooperation with the operating head for fixing the different fasteners in position one after the other.
A row of fasteners provided with staples placed in a standby position is fixed on the end of a conveyor belt by means of a stationary operating head comprising a staple-inserting punch, a movable die having the function of bending-back the staple ends, a frame which can be installed at a fixed point on any suitable support such as a bench, a guide on which is slidably mounted a movable bar having the function of a support for the end of a conveyor belt and for the row of fasteners to be fixed thereon. The movable bar is provided with a series of uniformly spaced openings for receiving the heads of the staples which initially project from one of the arms of the fasteners. The operating head is also provided with means for immobilizing the movable bar in each successive useful position of cooperation with the operating head for fixing the different fasteners in position one after the other.
Description
APPARATUS FOR FIXING FASTENERS
ON A CONVEYOR BELT OR THE LIKE
BACKGROUND OF THE INVENTION ;-.:
The present invention relates to the attachment of a row of fasteners to the end of a conveyor belt or the like. -; -More specifically, the invention is concerned with the attachment of fasteners consisting of U-shaped elements adapted to be mounted astride the end of a conveyor belt in order to be fixed thereon by means of ~-wire staples having the shape of an inverted U. This fastening operation is carried out by inserting these staples through holes formed in the two arms of said fasteners and then bending-back the pointed ends which project from these latter.
In order to fit them in position with greater ease, the fasteners initially have a V-shape, one of their arms being directed outwards from its normal position. Under these conditions, when the end of a conveyor belt or the like has been placed between the `
fasteners of the row to be fixed in position, it is first necessary to bend-back the initially opened-out arms of these fasteners before proceeding to insert the clamping staples and bending-back ~heir pointed ends.
A certain number of devices designed to : : :
ON A CONVEYOR BELT OR THE LIKE
BACKGROUND OF THE INVENTION ;-.:
The present invention relates to the attachment of a row of fasteners to the end of a conveyor belt or the like. -; -More specifically, the invention is concerned with the attachment of fasteners consisting of U-shaped elements adapted to be mounted astride the end of a conveyor belt in order to be fixed thereon by means of ~-wire staples having the shape of an inverted U. This fastening operation is carried out by inserting these staples through holes formed in the two arms of said fasteners and then bending-back the pointed ends which project from these latter.
In order to fit them in position with greater ease, the fasteners initially have a V-shape, one of their arms being directed outwards from its normal position. Under these conditions, when the end of a conveyor belt or the like has been placed between the `
fasteners of the row to be fixed in position, it is first necessary to bend-back the initially opened-out arms of these fasteners before proceeding to insert the clamping staples and bending-back ~heir pointed ends.
A certain number of devices designed to : : :
2()156~ :
perform these different operations are in existence at the present time. Thus French patent No. 2,590,955 describes an apparatus for fixing on the end of a conveyor belt a row of belt-fasteners provided with clamping staples placed in a standby position. This apparatus has an operating head mounted for sliding motion along a plate which is intended to serve as a support for the end of a conveyor belt and for the row of fasteners to be fixed on this latter. Said operating head is provided on each side of the row of belt-fasteners with a punch for inserting the clamping staples and a movable die for bending-back the pointed ends of the staples and also with a ratchet mechanism for producing step-by-step motion of the operating head opposite to the different fasteners to be fixed in position.
Said operating head is thus capable of -attaching each fastener one after the other. It is therefore necessary to displace said operating head progressively over the entire width of the end portion of a conveyor belt whilst the end portion itself remains stationary on the guide plate which serves as a support for this latter.
The operating head of this apparatus i5 subjected to high stresses during insertion of the clamping staples and clinching of the staple ends. ~ ;
:
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.
perform these different operations are in existence at the present time. Thus French patent No. 2,590,955 describes an apparatus for fixing on the end of a conveyor belt a row of belt-fasteners provided with clamping staples placed in a standby position. This apparatus has an operating head mounted for sliding motion along a plate which is intended to serve as a support for the end of a conveyor belt and for the row of fasteners to be fixed on this latter. Said operating head is provided on each side of the row of belt-fasteners with a punch for inserting the clamping staples and a movable die for bending-back the pointed ends of the staples and also with a ratchet mechanism for producing step-by-step motion of the operating head opposite to the different fasteners to be fixed in position.
Said operating head is thus capable of -attaching each fastener one after the other. It is therefore necessary to displace said operating head progressively over the entire width of the end portion of a conveyor belt whilst the end portion itself remains stationary on the guide plate which serves as a support for this latter.
The operating head of this apparatus i5 subjected to high stresses during insertion of the clamping staples and clinching of the staple ends. ~ ;
:
Z~ 6~
.
The means for guiding said operating head must therefore be capable of withstanding these stresses. This makes it necessary to provide parts having high mechanical strength and also calls for accurate machining of the means for guiding the movable operating head. In consequence, devices of this type entail relatively high capital cost.
For the reasons just given, the aim of the present invention is to provide an apparatus which is capable of performing the same work but which is so designed as to overcome the disadvantages set forth in the foregoing.
SUMMARY OF THE INVENTION
The apparatus in accordance with the invention ;
is distinguished by the fact that its operating head comprises a frame which can be installed at a fixed point on any suitable support such as a bench, for example, said frame being provided with a guide on which is slidably mounted a movable bar which is intended to serve as a support for the end portion of a conveyor belt and for the row of fasteners to be fixed on said end portion, said movable bar being provided with a series of uniformly spaced openings for receiving the heads of the clamping staples which are initially located in a projecting position on one of the arms of the fasteners whilst the operating head in a fixed ,;,, . . ,, ., .~ " . , ~: , ~ , . .
2~5~4~
position comprises means for immobilizing the movable bar in each of its successive useful positions of cooperation with said operating head for fixing the different fasteners in position one after the other. -~
Thus in the case of the apparatus considered, the operating head remains stationary, which offers a number of advantages and especially that of permitting the construction of the apparatus as a whole in a simpler form and with parts of lower mechanical strength than in the case of a movable operating head.
In a particular embodiment of the present apparatus, the means for immobilizing the movable bar in each of its useful positions consist of a dog which is capable of engaging within one of the openings of lS said movable bar under the action of a restoring spring, a hand-operated lever being provided for momentarily withdrawing said dog in order to permit displacement of the movable bar from one work position to the next.
However, in another embodiment of the apparatus in accordance with the invention, the stationary operating head has a mechanism which is capable of controlling the step-by-step forward displacement of the movable bar from one of its useful work positions to the next, said mechanism being actuated by a lever which can be operated by hand.
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BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a general view in perspective of the present apparatus.
FIG. 2 is a fragmentary top view to a different scale.
FIG. 3 iS a transverse sectional view taken along line III-III of FIG. 2.
FIGS. 4, 5 and 6 are diagrams illustrating the mode of actuation of the rotary control cam provided in the present apparatus.
FIG. 7 is a detail view in perspective illustrating the means for immobilizing the movable bar.
DETAILED DESCRIPTION OF THE INVENTION
As already mentioned, the apparatus under 15 consideration is so designed as to carry out the ~, different operations required for fixing a row of fasteners 2 on the end of a conveyor belt 1 in order to join this end to another end of said belt. The fasteners to be fixed in position are of the type consisting of U-shaped elements having two arms 2a and 2b joined together by hinge-knuckles 3 which are intended to be united by means of a pin with the hinge-knuckles of another similar row of fasteners. One of the two arms of said fasteners, namely their arm 2a in the case considered, carries two clamping staples 4 of wire each having the shape of an inverted U. These staples are 2a~
then mounted in the standby position. In other words, only their pointed ends are engaged within through-holes 5a provided in the fastener arm 2a considered. These staples are therefore arranged so as to project externally of the fasteners (as shown in FIG. 3).
As to the opposite arm 2b of these latter, it is accordingly provided with an "opened-out~' shape Ol, in other words, is placed in a position which is outwardly divergent from the normal position in which it is subsequently located in parallel relation to the other arm.
The present apparatus has a stationary operating head which is designated by the general reference 5 and is constituted by a frame having two vertical cheeks 6 which are integral with a base 7.
Said base is intended to be fixed by any suitable means such as bolts, for example, on a support such as a bench 8 or the like.
A longitudinal guide is provided at one end of said operating head 5. A rule 9 is slidably mounted in said guide and adapted to carry a flat bar 10 which is intended to serve as a support for the end portion 1 of a conveyor belt. Said guide is constituted by two jaws 11 placed on each side of a bar 12 which serves as a support for the rule 9.
The movable bar 10 and said rule 9 are '~ ~
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provided with a series of uniformly spaced openings 13 which are intended to receive staples 4, said staples being placed in a standby position on the fasteners 2 carried by the end portion 1 of the conveyor belt. In fact, this end portion is intended to be placed in the position shown in FIG. 4 in which the standby staples 4 are directed downwards whereas the opened-out arm 2b of each fastener is placed at the top. The engagement of the different staples 4 within the openings 13 thereby ensures accurate positioning of the row of fasteners 2 and of the end portion 1 of the conveyor belt on the movable bar 10.
On each side of the position of the row of fasteners 2, the operating head 5 has two groups of ~
15 tools which are intended to act on said fasteners and . :~.
on their clamping staples 4, namely as follows :
- on the one hand, above the row of fasteners 2, a movable die 15 attached to one end of a lever 16 pivotally mounted on a shaft 17 carried by the frame 6, - on the other hand, beneath the row of fasteners, two punches 18 and 19 mounted so as:to be capable of -~ moving in the vertical direction within guide wells 22 ¦ provided within the supporting bar 12, said punches being coupled to two separate and distinct control .~:
levers 20 and 21 pivotally mounted on two shafts 23 ~ .
20~
carried by the frame.
The opposite ends 25 and 26 of these two levers are placed in contact with a cam 24 carried by a rotary shaft 32 which can be actuated by hand by means of a handle 33 forming a control lever. That end 27 of the top lever 16 which is opposite to the die 15 is placed in contact with said rotary cam 24 which will be described in detail hereinafter. To this end, the two groups of levers 16, 20 and 21 can be coupled together by means of restoring springs 28 attached to pins 28a.
Preferably, the operating head 5 is designed to act on the clamping staples 4 of two adjacent fasteners 2 at two different stages of attachment of said staples, as is also the case in the apparatus described in French patent No. 2,590,955 cited earlier.
It is for this reason that provision is made for two separate and distinct punches 18 and 19 beneath the row of fasteners 2. The first punch 18 is intended to insert the two clamping staples 4 of a fastener 2 whilst the second punch 19 is intended to serve as an anvil for supporting the two staples 4 of the preceding fastener 2 at the time of final clinching of the staple ends which have previously been subjected to initial bending-back at the time of initial insertion of the corresponding staples. In regard to the die 15, this latter is provided with two separate groups of grooves 2~i56~
_9_ placed opposite to the points of the staples of two adjacent fasteners 2. The grooves of the first group are inclined so as to produce initial bending-back of the corresponding staple ends to an angle of 45, for example. In regard to the grooves of the second group, they are of small depth in order to carry out final clinching of the ends of the staples of the preceding fastener 2.
1The operating head 5 is also provided with !i10 means for immobilizing the movable bar 10 in each of its successive useful positions of cooperation with said head, namely in each position in which this latter !is capable of carrying out on the one hand the insertion of the clamping staples 4 in a predetermined fastener 2 and the final clinching of the staple ends 4 on the preceding fastener 2.
In the example illustrated in FIG. 7, these immobilization means consist of a dog 29 engaged within one of the openings 13 of the movable bar 10 under the . 20 action of a restoring spring 30. However, a pull rod ::
31 permits momentary withdrawal of said dog so as to displace the bar 10 in one of its work positions, this being carried out by hand operation.
The rotary cam 24 has three distinct control .
stages 24a, 24b and 24c having different profiles which ~; :
are intended to produce action on the three levers 16, ~-~', ' :~
:
2~L564~
20 and 21 from the rest position shown in FIGS. 3 and 4.
By virtue of these different control stages, it is only necessary for the operator to actuate the handle 33 which serves as a single control lever so as to displace this latter in pivotal motion in the direction of the arrow F in order to obtain the different operations required for fixing two adjacent fasteners 2, namely as follows :
1 - Closinq of a fastener :
Initial rotation of the cam 24 ensures pivotal displacement of the lever 16 in the direction of the arrow Fl up to the position shown in FIG. 5. In this position, the die 15 is pressed against the upper arm 2b of the corresponding fastener which is thus closed in a flat position on the end portion 1 of the conveyor belt.
2 - Simultaneous clinching o.f the pointed ends of the staples of the preceding fastener :
The downward movement of the die 15 also has the effect of clinching the ends of the staples 4 of the preceding fastener which had already been partially bent-back to 45. This clinching operation is made ~:
possible by the fact that the second punch 19 which is :~
intended to serve as an anvil is also brought in the -raised position into the corresponding opening 13 of the movable bar 10 by pivotal displacement of the correspond-ing control lever 21 to the position 21a (FIG. 5) under 2~56~
the action of the respective stage 24c of the rotary cam 24.
3 - Insertion of the staples in the fastener which has just been closed :
Continued rotation of the rotary cam 24 produces a pivotal displacement of the lever 20 in the direction of the arrow F2. Now this pivotal displacement has the effect of lifting the first punch 18, thus producing insertion of the two clamping staples 4 of the :
opposite fastener 2. These two staples are therefore inserted through the end portion 1 of the conveyor belt ~:
and their pointed ends are engaged in the holes provided in the upper arm 2b of the corresponding fastener 2.
For the reasons just given, the aim of the present invention is to provide an apparatus which is capable of performing the same work but which is so designed as to overcome the disadvantages set forth in the foregoing.
SUMMARY OF THE INVENTION
The apparatus in accordance with the invention ;
is distinguished by the fact that its operating head comprises a frame which can be installed at a fixed point on any suitable support such as a bench, for example, said frame being provided with a guide on which is slidably mounted a movable bar which is intended to serve as a support for the end portion of a conveyor belt and for the row of fasteners to be fixed on said end portion, said movable bar being provided with a series of uniformly spaced openings for receiving the heads of the clamping staples which are initially located in a projecting position on one of the arms of the fasteners whilst the operating head in a fixed ,;,, . . ,, ., .~ " . , ~: , ~ , . .
2~5~4~
position comprises means for immobilizing the movable bar in each of its successive useful positions of cooperation with said operating head for fixing the different fasteners in position one after the other. -~
Thus in the case of the apparatus considered, the operating head remains stationary, which offers a number of advantages and especially that of permitting the construction of the apparatus as a whole in a simpler form and with parts of lower mechanical strength than in the case of a movable operating head.
In a particular embodiment of the present apparatus, the means for immobilizing the movable bar in each of its useful positions consist of a dog which is capable of engaging within one of the openings of lS said movable bar under the action of a restoring spring, a hand-operated lever being provided for momentarily withdrawing said dog in order to permit displacement of the movable bar from one work position to the next.
However, in another embodiment of the apparatus in accordance with the invention, the stationary operating head has a mechanism which is capable of controlling the step-by-step forward displacement of the movable bar from one of its useful work positions to the next, said mechanism being actuated by a lever which can be operated by hand.
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BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a general view in perspective of the present apparatus.
FIG. 2 is a fragmentary top view to a different scale.
FIG. 3 iS a transverse sectional view taken along line III-III of FIG. 2.
FIGS. 4, 5 and 6 are diagrams illustrating the mode of actuation of the rotary control cam provided in the present apparatus.
FIG. 7 is a detail view in perspective illustrating the means for immobilizing the movable bar.
DETAILED DESCRIPTION OF THE INVENTION
As already mentioned, the apparatus under 15 consideration is so designed as to carry out the ~, different operations required for fixing a row of fasteners 2 on the end of a conveyor belt 1 in order to join this end to another end of said belt. The fasteners to be fixed in position are of the type consisting of U-shaped elements having two arms 2a and 2b joined together by hinge-knuckles 3 which are intended to be united by means of a pin with the hinge-knuckles of another similar row of fasteners. One of the two arms of said fasteners, namely their arm 2a in the case considered, carries two clamping staples 4 of wire each having the shape of an inverted U. These staples are 2a~
then mounted in the standby position. In other words, only their pointed ends are engaged within through-holes 5a provided in the fastener arm 2a considered. These staples are therefore arranged so as to project externally of the fasteners (as shown in FIG. 3).
As to the opposite arm 2b of these latter, it is accordingly provided with an "opened-out~' shape Ol, in other words, is placed in a position which is outwardly divergent from the normal position in which it is subsequently located in parallel relation to the other arm.
The present apparatus has a stationary operating head which is designated by the general reference 5 and is constituted by a frame having two vertical cheeks 6 which are integral with a base 7.
Said base is intended to be fixed by any suitable means such as bolts, for example, on a support such as a bench 8 or the like.
A longitudinal guide is provided at one end of said operating head 5. A rule 9 is slidably mounted in said guide and adapted to carry a flat bar 10 which is intended to serve as a support for the end portion 1 of a conveyor belt. Said guide is constituted by two jaws 11 placed on each side of a bar 12 which serves as a support for the rule 9.
The movable bar 10 and said rule 9 are '~ ~
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provided with a series of uniformly spaced openings 13 which are intended to receive staples 4, said staples being placed in a standby position on the fasteners 2 carried by the end portion 1 of the conveyor belt. In fact, this end portion is intended to be placed in the position shown in FIG. 4 in which the standby staples 4 are directed downwards whereas the opened-out arm 2b of each fastener is placed at the top. The engagement of the different staples 4 within the openings 13 thereby ensures accurate positioning of the row of fasteners 2 and of the end portion 1 of the conveyor belt on the movable bar 10.
On each side of the position of the row of fasteners 2, the operating head 5 has two groups of ~
15 tools which are intended to act on said fasteners and . :~.
on their clamping staples 4, namely as follows :
- on the one hand, above the row of fasteners 2, a movable die 15 attached to one end of a lever 16 pivotally mounted on a shaft 17 carried by the frame 6, - on the other hand, beneath the row of fasteners, two punches 18 and 19 mounted so as:to be capable of -~ moving in the vertical direction within guide wells 22 ¦ provided within the supporting bar 12, said punches being coupled to two separate and distinct control .~:
levers 20 and 21 pivotally mounted on two shafts 23 ~ .
20~
carried by the frame.
The opposite ends 25 and 26 of these two levers are placed in contact with a cam 24 carried by a rotary shaft 32 which can be actuated by hand by means of a handle 33 forming a control lever. That end 27 of the top lever 16 which is opposite to the die 15 is placed in contact with said rotary cam 24 which will be described in detail hereinafter. To this end, the two groups of levers 16, 20 and 21 can be coupled together by means of restoring springs 28 attached to pins 28a.
Preferably, the operating head 5 is designed to act on the clamping staples 4 of two adjacent fasteners 2 at two different stages of attachment of said staples, as is also the case in the apparatus described in French patent No. 2,590,955 cited earlier.
It is for this reason that provision is made for two separate and distinct punches 18 and 19 beneath the row of fasteners 2. The first punch 18 is intended to insert the two clamping staples 4 of a fastener 2 whilst the second punch 19 is intended to serve as an anvil for supporting the two staples 4 of the preceding fastener 2 at the time of final clinching of the staple ends which have previously been subjected to initial bending-back at the time of initial insertion of the corresponding staples. In regard to the die 15, this latter is provided with two separate groups of grooves 2~i56~
_9_ placed opposite to the points of the staples of two adjacent fasteners 2. The grooves of the first group are inclined so as to produce initial bending-back of the corresponding staple ends to an angle of 45, for example. In regard to the grooves of the second group, they are of small depth in order to carry out final clinching of the ends of the staples of the preceding fastener 2.
1The operating head 5 is also provided with !i10 means for immobilizing the movable bar 10 in each of its successive useful positions of cooperation with said head, namely in each position in which this latter !is capable of carrying out on the one hand the insertion of the clamping staples 4 in a predetermined fastener 2 and the final clinching of the staple ends 4 on the preceding fastener 2.
In the example illustrated in FIG. 7, these immobilization means consist of a dog 29 engaged within one of the openings 13 of the movable bar 10 under the . 20 action of a restoring spring 30. However, a pull rod ::
31 permits momentary withdrawal of said dog so as to displace the bar 10 in one of its work positions, this being carried out by hand operation.
The rotary cam 24 has three distinct control .
stages 24a, 24b and 24c having different profiles which ~; :
are intended to produce action on the three levers 16, ~-~', ' :~
:
2~L564~
20 and 21 from the rest position shown in FIGS. 3 and 4.
By virtue of these different control stages, it is only necessary for the operator to actuate the handle 33 which serves as a single control lever so as to displace this latter in pivotal motion in the direction of the arrow F in order to obtain the different operations required for fixing two adjacent fasteners 2, namely as follows :
1 - Closinq of a fastener :
Initial rotation of the cam 24 ensures pivotal displacement of the lever 16 in the direction of the arrow Fl up to the position shown in FIG. 5. In this position, the die 15 is pressed against the upper arm 2b of the corresponding fastener which is thus closed in a flat position on the end portion 1 of the conveyor belt.
2 - Simultaneous clinching o.f the pointed ends of the staples of the preceding fastener :
The downward movement of the die 15 also has the effect of clinching the ends of the staples 4 of the preceding fastener which had already been partially bent-back to 45. This clinching operation is made ~:
possible by the fact that the second punch 19 which is :~
intended to serve as an anvil is also brought in the -raised position into the corresponding opening 13 of the movable bar 10 by pivotal displacement of the correspond-ing control lever 21 to the position 21a (FIG. 5) under 2~56~
the action of the respective stage 24c of the rotary cam 24.
3 - Insertion of the staples in the fastener which has just been closed :
Continued rotation of the rotary cam 24 produces a pivotal displacement of the lever 20 in the direction of the arrow F2. Now this pivotal displacement has the effect of lifting the first punch 18, thus producing insertion of the two clamping staples 4 of the :
opposite fastener 2. These two staples are therefore inserted through the end portion 1 of the conveyor belt ~:
and their pointed ends are engaged in the holes provided in the upper arm 2b of the corresponding fastener 2.
4 - Partial bending-back of the staple ends :
Continued rotation of the rotary cam 24 up to the position shown in FIG. 6 has the effect of lifting the first punch 18 to an even greater extent. Under ; ~ .
these conditions, the pointed ends of the corresponding ~ ::
staples 4 are engaged in those grooves of the die 15 20 which are located opposite, namely the sloping grooves . ~
which produce partial bending-back of said pointed ends : -~;
at 45. :~
Continued rotation of the rotary cam 24 up to the position shown in FIG. 6 has the effect of lifting the first punch 18 to an even greater extent. Under ; ~ .
these conditions, the pointed ends of the corresponding ~ ::
staples 4 are engaged in those grooves of the die 15 20 which are located opposite, namely the sloping grooves . ~
which produce partial bending-back of said pointed ends : -~;
at 45. :~
5 - Return of the operating head to the standby position and displacement of the movable bar 10 :
As soon as the last operation mentioned above ::
has been completed, the operator can swing the handle 33 :
2~ 6~
downwards to its initial position so as to cause lifting of the die 15 and downward displacement of the two punches 18 and 19 to the respective positions shown in FIG. 3. The movable bar 10 can then be displaced in a 5 single step so as to bring it to the following work position in which the staple ends which have been partially bent-back will be finally clinched whilst the following fastener will be subjected to the same initial work stage already carried out on the fastener 10 considered.
However, instead of manual step-by-step forward displacement of the movable bar lO by the operator, it is possible to provide a mechanism which is capable of controlling this forward displacement.
15 This mechanism can include a thrust dog which comes into action successively within each opening 13 of the movable bar lO, said dog being in turn controlled by a hand lever.
As has already been mentioned, the main v 20 advantage of the apparatus in accordance with the invention lies in the fact that its operating head is stationary. In consequence, the stresses sustained by said operating head at the time of use can be withstood ~ -with greater ease without entailing the need to provide 25 high mechanical resistance of the parts of the apparatus as a whole. Moreover, this dispenses with the need to !, ~ . . . . .. .
21~5~
provide this operating head with guiding means having very high precision and very high strength. It should be observed in this connection that the means for guiding the movable bar are clearly much more simple ~ :
than those which are necessary in the case of a movable operating head as contemplated in French patent No. 2,590,955 mentioned earlier.
The apparatus in accordance with the invention, which is intended to be installed at a fixed point on a .
10 bench or other suitable support is more particularly :-~
intended to be used for operations which consist in coupling belts or bands of relatively limited width.
:'~' ! . .
As soon as the last operation mentioned above ::
has been completed, the operator can swing the handle 33 :
2~ 6~
downwards to its initial position so as to cause lifting of the die 15 and downward displacement of the two punches 18 and 19 to the respective positions shown in FIG. 3. The movable bar 10 can then be displaced in a 5 single step so as to bring it to the following work position in which the staple ends which have been partially bent-back will be finally clinched whilst the following fastener will be subjected to the same initial work stage already carried out on the fastener 10 considered.
However, instead of manual step-by-step forward displacement of the movable bar lO by the operator, it is possible to provide a mechanism which is capable of controlling this forward displacement.
15 This mechanism can include a thrust dog which comes into action successively within each opening 13 of the movable bar lO, said dog being in turn controlled by a hand lever.
As has already been mentioned, the main v 20 advantage of the apparatus in accordance with the invention lies in the fact that its operating head is stationary. In consequence, the stresses sustained by said operating head at the time of use can be withstood ~ -with greater ease without entailing the need to provide 25 high mechanical resistance of the parts of the apparatus as a whole. Moreover, this dispenses with the need to !, ~ . . . . .. .
21~5~
provide this operating head with guiding means having very high precision and very high strength. It should be observed in this connection that the means for guiding the movable bar are clearly much more simple ~ :
than those which are necessary in the case of a movable operating head as contemplated in French patent No. 2,590,955 mentioned earlier.
The apparatus in accordance with the invention, which is intended to be installed at a fixed point on a .
10 bench or other suitable support is more particularly :-~
intended to be used for operations which consist in coupling belts or bands of relatively limited width.
:'~' ! . .
Claims (5)
1. An apparatus for fixing on the end of a conveyor belt a row of fasteners provided with clamping staples placed in a standby position, by means of an operating head which is capable of fixing said fasteners in position one after the other, and comprising for this purpose on each side of the row of fasteners to be fixed a punch for inserting the staples and a movable die which is intended to bend-back the pointed ends of said staples, wherein said operating head comprises a frame which can be installed at a fixed point on any suitable support such as a bench, for example, said frame being provided with a guide on which is slidably mounted a movable bar which is intended to serve as a support for the end portion of a conveyor belt and for the row of fasteners to be fixed on said end portion, said movable bar being provided with a series of uniformly spaced openings for receiving the heads of the clamping staples which are initially located in a projecting position on one of the arms of the fasteners whilst the operating head in a fixed position comprises means for immobilizing the movable bar in each of its successive useful positions of cooperation with said operating head for fixing the different fasteners in position one after the other.
2. A fixing apparatus according to claim 1, wherein the means for immobilizing the movable bar in each of its useful positions consist of a dog which is capable of engaging within one of the openings of said movable bar under the action of a restoring spring, a hand-operated pull rod being provided for momentarily withdrawing said dog in order to permit displacement of the movable bar from one work position to the next.
3. A fixing apparatus according to claim 1, wherein the stationary operating head has a mechanism which is capable of controlling the step-by-step forward displacement of the movable bar from one of its useful work positions to the next, said mechanism being actuated by a lever which can be operated by hand.
4. A fixing apparatus according to claim 1 wherein, independently of the means for immobilization and/or forward displacement of the movable bar, the operating head comprises a single control lever for actuating a rotary cam which controls two pivoting levers, said levers being adapted to produce action respectively on the movable die which has the intended function of closing the fasteners and subsequently bending-back the pointed ends of the clamping staples and on the punch for inserting each clamping staple.
5. A fixing apparatus according to claim 4 wherein, the stationary operating head being designed to act on the clamping staples of two adjacent fasteners at two different stages of attachment of said staples, said head is provided opposite to the movable die with two separate and distinct punches, one punch being intended to insert the corresponding clamping staples in a predetermined fastener and the other punch being intended to serve as an anvil at the time of clinching of the pointed ends of the clamping staples of the preceding fastener, the movable die being provided with two separate and distinct groups of grooves which are capable of carrying out respectively the initial bending-back of the staple ends of the first fastener considered and final clinching of the staple ends of the preceding fastener whilst the rotary control cam has three distinct control stages for producing action respectively on two levers which actuate the two punches and on a third lever which actuates the movable die.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8904590A FR2645610A1 (en) | 1989-04-07 | 1989-04-07 | APPARATUS FOR FIXING JUNCTION STAPLES ON A CONVEYOR OR THE LIKE |
| FR8904590 | 1989-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2015641A1 true CA2015641A1 (en) | 1990-10-07 |
Family
ID=9380486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2015641 Abandoned CA2015641A1 (en) | 1989-04-07 | 1990-04-27 | Apparatus for fixing fasteners on a conveyor belt or the like |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0391772A1 (en) |
| CN (1) | CN1046377A (en) |
| CA (1) | CA2015641A1 (en) |
| FR (1) | FR2645610A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2030203C (en) * | 1989-12-06 | 2001-04-10 | Edward C. Musil | Fastening apparatus for securing belt fasteners to a conveyor belt |
| CN101210602B (en) * | 2006-12-25 | 2010-09-29 | 上海高罗输送装备有限公司 | Walking positioning plate convenient for binding machine tooth biting |
| CN102235479A (en) * | 2010-04-29 | 2011-11-09 | 上海高罗输送装备有限公司 | Walking rack for clinching machine |
| CN102486428A (en) * | 2010-12-01 | 2012-06-06 | 西安中科麦特电子技术设备有限公司 | Rain test box for LED (Light-emitting Diode) street lamp |
| CN103600386B (en) * | 2013-12-03 | 2015-10-28 | 广州厚邦木业制造有限公司 | Floor nailing equipment |
| CN110173541B (en) * | 2018-11-22 | 2024-02-27 | 襄阳忠良工程机械有限责任公司 | Mechanical belt button sewing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR660741A (en) * | 1928-08-31 | 1929-07-16 | C B Larson & Co Inc | Refinements to stapling devices and articles made with them |
| FR705733A (en) * | 1929-10-19 | 1931-06-11 | Device for the execution of metal-free belt fasteners | |
| FR2590955B1 (en) * | 1985-12-04 | 1988-03-18 | Goro Sa | APPARATUS FOR FIXING JUNCTION STAPLES ON A CONVEYOR OR THE LIKE |
| GB2202605B (en) * | 1987-02-28 | 1991-01-23 | Fenner Co Ltd J H | Apparatus for affixing fasteners to a conveyor belt |
-
1989
- 1989-04-07 FR FR8904590A patent/FR2645610A1/en not_active Withdrawn
-
1990
- 1990-03-29 EP EP90400851A patent/EP0391772A1/en not_active Withdrawn
- 1990-04-06 CN CN 90102005 patent/CN1046377A/en active Pending
- 1990-04-27 CA CA 2015641 patent/CA2015641A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN1046377A (en) | 1990-10-24 |
| FR2645610A1 (en) | 1990-10-12 |
| EP0391772A1 (en) | 1990-10-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |