JPH0324291B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for manufacturing a spacing holder for concrete formwork, which manufactures a spacing holder for maintaining the spacing between concrete formworks.

[Conventional technology]

Various types of concrete formwork spacing holders are used to construct concrete structures, etc., but a typical shape is one in which washers are inserted at both ends of a single rod called a separator.
There is one in which the washer member is sandwiched and a protrusion for preventing it from coming off is formed on the inner and outer sides of the washer member.

When forming the spacer of the above type, conventionally the protrusions were formed one rod at a time using a manual press. Therefore, the washer member must also be press-worked while being manually inserted into the rod.

[Problem that the invention seeks to solve]

In the above manufacturing method, each step of forming a protrusion or inserting a washer member must be performed manually, and all processes such as inserting a washer member and forming a protrusion for this spacer are integrated. This has disadvantages such as the fact that automatic machining cannot be performed, and therefore manufacturing costs are high and manufacturing time cannot be shortened.

Therefore, this invention was made in view of the above-mentioned current situation, and its purpose is to supply, feed, and supply separators.
To provide an apparatus for manufacturing a spacing holder for concrete formwork that can consistently and automatically process a series of processing operations such as feeding and inserting a washer member into a separator, and pressing of protrusions and other markings.

[Means for solving problems]

As a means for solving the above-mentioned problems, the present invention includes a separator supplying device that stores separators, which are the main components of a spacing holder for concrete formwork, in a hopper and feeds them from the feeder end, and a separator supplying device disposed on the upstream side. An endless conveyor that transports separators by intermittent drive with a plurality of separator support members fixed at predetermined intervals to receive and support separators, a drive unit that sends out washer members, and an area where both ends of the separators pass at a predetermined position on the transport path. A washer supply device consisting of a feeder that supplies the fed washer member so that its through hole intersects the axis of the separator, a front edge that supports the supplied washer member, a diagonal guide portion starting from a corner thereof, and this A guide means for rotating the washer member, inserting the separator end into the through hole, and guiding the separator to a predetermined position closer to the inner side of both ends of the separator by moving the separator, A configuration is adopted that includes a press mechanism consisting of an upper press die and a lower press die that sandwich the washer member guided to a predetermined position of the separator and form at least a pair of retaining protrusions on the inside and outside of the washer member. It is.

[Effect]

The separator supplied to the endless conveyance device at the separator supply position is placed on the support member of the conveyance device and sent downstream, and at the washer supply position, the washer members sent by the washer supply device are guided at both ends. At the same time, the washer member is inserted through a means and guided in the axial direction of the separator to position the washer member at a predetermined position on the separator, and then at a press position, the washer member at a predetermined position relative to the separator is held and pressed inside and outside of the separator. A pair of retaining protrusions are formed by the mechanism. After the protrusions are formed, the material is sent downstream again by the conveying device and discharged from the manufacturing device.

The supply of separators in the separator supply device and the supply of washer members in the washer supply device are both fed from vertically above the conveyance device. Further, the insertion of the washer member into the end of the separator in the washer supply device is carried out using the end face and slope of the guide means and the feeding movement of the conveyor.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 are a front view and a side view of a manufacturing apparatus for concrete form spacing retainers according to this embodiment, and FIG. 3 is a plan view of the main parts of this manufacturing apparatus including a conveyance device. .

In the figure, 10 is an endless conveyor, 20 is a separator supply device, 30 is a washer supply device, 40 is a guide means, 50 is a press mechanism, 60 is a power transmission shaft,
70 is a guide rail width adjustment device, 7 is a separator, and W is a washer member. The endless conveyance device 10 is fixed on the bases 1 and 4, the separator supply device 20 is fixed on the intermediate base 2, and the washer supply device 30 is fixed on the upper base 3 by appropriate means.

The endless conveyor 10 includes an endless chain conveyor 1
1, a holding member 13 fixed to each link of this chain conveyor 11 via a connecting plate 12, a sprocket 14 that rotationally drives the endless chain conveyor 11, and bearings 15 and 16 that pivotally support this sprocket. We are prepared. Both bearing parts 15, 16
are provided at a sufficient distance to provide the stroke necessary to process a series of steps in this manufacturing equipment, and the rear bearing section 16 has a reduction gear for rotational driving by a drive section 60, which will be described later. Machine included.

The separator supply device 20 includes a hopper 21 and a vertical feeder section 22 for vertically supplying separators S to the bottom of the hopper 21. The separator S is supplied to the hopper 21 from the upper part of the hopper 21 by appropriate means (not shown).

The washer supply device 30 includes a spiral table 31, a vertical feeder pipe 32 connected to a horizontal outlet of the spiral table 32 for vertically downwardly supplying washer members, and a drive unit including a motor for driving the spiral table 31. It consists of 33 pieces.

As shown in FIG. 3, the guide means 40 is composed of a front vertical end surface 43a and a side slope 43b of a rear guide plate 43, which will be described later.

The press mechanism 50 includes an upper press 51 that hangs down from above a press device (not shown) that is completely independent of the bases 1 to 4, a press die 53 that is detachably fixed to this, and a base of the press device. It consists of a fixed lower press 52 and a press mold 54 detachably fixed thereto.

Although the drive unit of the press mechanism 50 is not shown, it is provided in the press device, and the upper press 51 is reciprocated up and down via this drive unit, and at the same time, this drive unit is operated for endless conveyance, which will be explained next. Device 1
It is commonly used as a drive part for the power transmission shaft 60 of the 0.

In this embodiment, the power transmission shaft 60 includes a main shaft 61,
Although it consists of a bevel gear 62, a coupling 63, etc., this mechanism may have any other suitable structure as long as it has the same function.
Note that the vertical movement of the upper press 51 of the press mechanism 50 and the rotational drive of the endless chain conveyor 11 of the endless conveyance device 10 by the power transmission shaft 60 are the formation of protrusions described later on the separator held by the holding member 13 of each link. In order to do this, each link is sent one by one to the press position each time the upper press 51 operates once.

The guide rail width adjustment device 70 has an adjustment knob 71
It consists of a screw shaft 72 coaxial with the screw shaft 72, a slide base 73 fixed to the tip thereof, and a base 74.
The base 74 is fixed on the base 1a, and has an end plate 74a erected at its outer end.
The bearing 72a of the screw shaft 72 is fixed to the screw shaft 7.
I support 2. The guide rail 41 is fixed on this slide base 73 (the fourth
(see figure). Note that this adjustment device 70 is provided at one location each on the left and right near the line - in FIG.
This may be provided at multiple locations.

Note that the guide means 40 includes a guide rail 4 for guiding the separator S along the traveling direction of the endless conveying device as equipment incidental to the guide means 40.
1, and a front guide plate 42 and a rear guide plate 43 are fixed over substantially the entire length of the protrusion at the side end thereof. As shown in the partially enlarged view of FIG. 4, the cross section of the guide rail 41 is approximately L-shaped, with the protruding stripes forming the side ends.
The front guide plate 42 and the rear guide plate 43 are located at the washer supply position (the position of the line - in Fig. 3, the same applies hereinafter).
Nearby, as shown in FIG. 3, they are cut and separated from each other diagonally. Furthermore, as shown in FIG. 10, the guide means 40 has a washer holding means 80 at its front end.
The configuration will be explained in detail later.

Next, the operation of this embodiment having the above configuration will be explained. In this case, the outline of the operation will be mainly explained using FIGS. 1 to 3, and the individual operation of each device will be explained with reference to the attached drawings from FIG. 4 onwards.

In the separator supply device 20 shown in FIG. 1, separators S are fed into the hopper 21 by an appropriate conveying means (not shown). Separator S is
The separator is supplied to the endless conveyor 10 through a vertical feeder section 22 connected to the bottom of the hopper 21 at a separator supply position (the position indicated by the line - in FIG. 1, hereinafter the same). The separators S are placed one by one on the holding members 13 of the endless chain conveyor 11. When the endless chain conveyor 11 is driven to rotate, each separator S is sequentially conveyed to the downstream process (in the direction of the arrow in FIG. 3).

As soon as the separator S supplied to the endless conveyance device 10 at the separator supply position begins to be conveyed downstream from the separator supply position, both ends of the separator S are inserted under the front guide plate 42 to prevent the separator from jumping upward. The lower portion and side portions of both ends are guided by guide rails 41 while restricting hanging down and movement in the left and right directions (see FIGS. 3 and 4).

When the separator S reaches the washer supply position, the separator S is inserted into the through hole Wa of the washer member W whose axis is perpendicular to the axis of the separator S held vertically along the front vertical end surface 43a of the guide means 40. Both ends interlock. Then, the washer member W pulled in the direction of movement of the separator is rotated by approximately 90 degrees as shown in FIG. 16, and the through hole Wa is externally inserted into the end of the separator.
Further, as the endless chain conveyor 11 advances, the separator S and the washer member W move together, and the washer member W moves along the side slope 43b of the guide means 40 to a predetermined position slightly closer to the center of the side of the separator pushed inward. It is inserted until the end. The operation of inserting the washer member W into the separator end will be described in more detail later in connection with FIGS. 10 to 12.

At the same time as being set at a predetermined position on the separator, the washer member reaches the rear end of the guide means 40 with the parallel surface 43c of the guide means 40 oriented parallel to the traveling direction of the endless chain conveyor 11. An endless chain conveyor 1 further extends from the rear end.
1 advances, the separator then enters the front end of the press mechanism 50. And this press mechanism 5
At approximately the center position of 0, a pair of protrusions for preventing the separator from coming off are formed on the inner and outer sides of the separator with the predetermined position as the center. This pressing process will be explained later in the 8th section.
Further details will be explained with reference to FIG.

When the pressing of the protrusions is completed, the endless chain conveyor further advances from the pressing position to discharge the separator from the manufacturing apparatus, thus completing the entire process.

FIG. 4 is a diagram showing a cross section taken along the line - in FIG. 3. A state in which the separator S is fed from the vertical feeder section 22 of the upper separator supply device 20 onto the holding member 13 of the endless chain conveyor 11 is shown. A guide rail 41 is provided to guide the separator S vertically and horizontally.
3, the span of the left and right guide rails can be adjusted by sliding the screw shaft 72 of the guide rail width adjusting device 70 on the base 74.

FIG. 5 is a partially enlarged sectional view taken along the line - in FIG. 3, and shows a state in which separators S are placed on the endless conveyance device 10 at the separator supply position described above. In this case, a horizontal holding member 17 is provided below the endless chain conveyor 11 with approximately the same length as the guide rail 41 in order to prevent the endless chain conveyor 11 from hanging down.

FIG. 6 is a partially enlarged sectional view taken along the line - in FIG.
The figure shows a state in which the separator S is fitted onto both ends of the separator S.

FIG. 7 is a partially enlarged sectional view taken along the line - in FIG.
3 and guide rails 41 into a predetermined position of the separator S.

FIG. 8 is a partially enlarged sectional view taken along the line - in FIG. 3, in which the washer member W is positioned on a press die 54 set in a lower press 52 of a press mechanism 50. Even in this position, both ends of the separator S are still prevented from jumping upward by a pressing member 56 formed integrally with the lower press 52.

A fork-shaped support plate 55 is provided inside the lower press 52, and its tip protrusion 55a
The shape matches that of the tip protrusion 54a of the press mold 54, and its lower end is connected to a coil spring 55c, which is set in a chamber 55b provided in the lower press 52. There is. The coil spring 55c biases the top of the tip protrusion 55a of the support plate 55 with an upward spring force so that it is flush with the top of the tip protrusion 54a of the press mold 54.

A separator S is provided between the two lower presses 52.
Dimension classification mark 92 and manufacturer name (first
Another press die 58 is provided for stamping (see Figure 5).

FIG. 9 shows a state in which the separator S is pressed by the press mechanism 50. Separator S
The protrusion 91 is formed by the press mold 53 of the upper press 51 and the press mold 54 of the lower press 52 (see FIG. 15), and another set of the upper press mold 5
7 and the lower press mold 58 press-form the classification mark 92. At this time, the separator S is pressed in a state lower than the horizontal level shown in FIG. 8 (see FIG. 13). This is to form the protrusion 91 on the axial center line of the separator S. When the pressing force of the press mechanism 50 is removed, the state shown in FIG. 8 is restored (see FIG. 14).

10 to 12 are diagrams showing a state in which the washer member W is inserted and guided into the separator S after being supplied at the washer supply position.

The washer member W is supplied onto the guide rail 41 from the vertical feeder pipe 32 of the washer supply device 30 through the opening 44 of the front guide plate 42 . At this time, the washer member W is vertically held by a washer holding means 80 consisting of a horizontal spring plate 81 and a vertical spring plate 82. This washer holding means 80 is attached to the rear guide plate 43.
The horizontal spring plate 81 is provided on the guide plate, and the vertical spring plate 82 is provided along the vertical portion of the front end. Such holding means 8
When the end of the separator S conveyed by the endless chain conveyor 11 comes into contact with the washer member W held vertically at 0, the washer member W remains vertically rotated. Then, the upper part of the washer member W comes into contact with an abutment part 81a formed at the tip of the horizontal spring plate 81, which is rectangular when viewed from above and has a quarter-circular cross section, thereby preventing the washer member W from escaping. At the same time, the outer end of the washer W is held by the reaction force of the tip 82a of the vertical spring plate 82 (see FIG. 12) and the washer rotates. As the separator S further advances, the washer member separates from the holding means 80,
It is inserted into both ends of the separator S.

FIGS. 13 and 14 are partially enlarged views of the state in which the protrusions 91 of the separator S are press-formed, as viewed from the cross-sectional direction of the separator S. FIGS. In the state shown in FIG. 13, the tip protrusion 55a of the support plate 55 is sunk a little distance from the tip protrusion 54a of the press mold 54, and press forming is performed, and in FIG.
1 is formed, the pressing force of the press mechanism 50 is removed, and the separator S returns to its initial level. Note that when the separators are sinking in the state shown in FIG. 13, the endless chain conveyor 11 that conveys the separators S partially sinks because the horizontal holding member 17 is not provided at the bottom in this vicinity. This sinking amount is absorbed by the chain conveyor 11.

FIG. 15 is a diagram showing a completed state of a concrete form spacing holder manufactured by the manufacturing apparatus according to this embodiment. A washer member W is provided between the inner and outer protrusions at predetermined positions on both ends of the separator S.
has been inserted.

In the embodiments described above, the washer member W uses a flat washer. Therefore, the above-mentioned washer holding means 80 was required at the parts supply position. However, as for the shape of the washer member W, there are other shapes as shown in the embodiment shown in FIGS. 16 and 17.
A cone-shaped washer member can also be used. In this case, the washer holding means 80 may not be provided. This is because the cone-shaped washer member itself can stably stand upright. Further, the end shape of the front guide plate 42 is formed into a substantially L-shape as shown in FIG. 16, and a space with a width that allows the cone body to move is provided between each side of the guide means 40.

Fig. 17 is a diagram showing the completed state of a spacing holder for concrete formwork that uses a cone-shaped washer member W, but there are also other types that use a flat washer on one side and a cone-shaped washer member on the other. You can also.

〔effect〕

As explained above, in the apparatus for manufacturing spacing holders for concrete formwork according to the present invention, the endless conveyance device, separator supply device, washer supply device, guide means, press mechanism, etc. are arranged along the flow of a series of processing processes. However, since everything from material supply to final processing is automated by machines, the spacer can be manufactured without any manual intervention, making it extremely economical.

[Brief explanation of the drawing]

1 and 2 are front and side views of a manufacturing device for spacing holders for concrete formwork, FIG. 3 is a plan view of each device that sends separators S from an endless conveyance device to a press mechanism 50, and FIG. 4 is a sectional view taken along the line - in Fig. 3 at the separator supply position;
The figure is a sectional view taken along the line - in Fig. 3 near the separator supply position, Fig. 6 is a sectional view taken along the line - in Fig. 3 near the washer supply position, and Fig. 7 is a sectional view taken along the line - in Fig. 3 near the washer supply position. A partially enlarged cross-sectional view taken at
Figure 8 is a partially enlarged sectional view taken along the line - in Figure 3, Figure 9 is a view of the separator being pressed by the press mechanism, and Figures 10 to 12 are views of the separator being pressed at the washer supply position. FIGS. 13 and 14 are partially enlarged cross-sectional views of the separator protrusion in a pressed state;
Fig. 15 is a perspective view of a concrete formwork spacing holder in a completed state with protrusions, Fig. 16 is a partially enlarged view of the insertion/guiding device near the washer supply position when the washer member is a cone body; FIG. 17 is a perspective view of a completed spacer for concrete formwork using a cone-shaped washer member. 1-4...Base, 10...Endless conveyance device, 20
... Separator supply device, 30 ... Washer supply device, 40 ... Guide means, 50 ... Press mechanism, 6
0...Power transmission shaft, 70...Guide rail width adjustment device, S...Separator, W...Washer member.

Claims (1)

[Claims] 1 A separator supply device that stores separators, which are the main components of a spacing holder for concrete formwork, in a hopper and feeds them out from the feeder end, and a plurality of separator support members that receive and support separators from the above-mentioned supply device arranged on the upstream side at predetermined intervals. An endless conveyor that transports the separator by intermittent drive while fixed to the conveyor, a drive unit that sends out the washer member, and a through hole that carries the washer member that is sent out to the area where both ends of the separator pass through at a predetermined position on the conveyance path. A washer supplying device consisting of a feeder that feeds the washer in a manner that intersects with the washer, a front edge that supports the supplied washer, a diagonal guide starting from a corner of the washer, and a parallel guide following this, rotates the washer. a guide means for inserting the separator end into the through hole and guiding the separator to a predetermined position nearer to the inner side of both ends of the separator by moving the separator; 1. An apparatus for manufacturing a spacer for concrete formwork, comprising a press mechanism comprising an upper press mold and a lower press mold forming at least a pair of retaining protrusions on the inner and outer sides thereof.