JPS6010969B2 - Slat conveyor for intermittent feeding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a slat conveyor for intermittent feeding, that is, a freely movable slat conveyor in which support parts for transported objects are provided at equal intervals. an interlocking feeding device having an engaging portion and feeding the slat conveyor in a constant stroke through the engaging portion;
This invention relates to an improvement in a slat conveyor that is equipped with a slat position fixing means for fixing the position of the slats belonging to each conveyed object support part. The object of the present invention is to enable the intermittent feeding action to be performed satisfactorily without causing any deviation in the stopping positions of the conveyed object supported on the slats.

Hereinafter, one embodiment of the present invention will be described based on the attached illustrative drawings. Reference numeral 1 denotes a freely movable slat conveyor, each slat 2 being connected in an endless manner by a roller chain 3 at both ends of the conveyor. Each roller 4 of the roller chain 3 is engaged with a guide rail 5, and the roller chain 3 is suspended by free rotating gear wheels 7 at both ends of the conveyance path 6.

This slat conveyor 1 is provided with conveyed object support parts 9 equipped with conveyed object supporting tools 8 at equal intervals, and one of the plurality of parallel slats 2 forming each support part 9. ,
A particular slat 2a has a rod-like body 10 installed between the left and right chain links to form an engaged portion 11.
is formed. Further, a chain elongation adjusting means 12 is interposed between the roller chains 3 between the respective support parts 9. The chain extension adjustment means 12 is composed of a length-adjustable chain link having an adjustment screw 14 with left and right reverse threads and a rotary operation part 13 in the center. 15 is the conveyance path 6
A reciprocating movable body guided by a pair of left and right guide rails 16 constructed along the axis via rollers 17, and a driving roller suspended between a driving gear 18 and an idling gear 19. It is connected to the chain 20 and is driven to reciprocate horizontally in a straight line in the same range as the distance between the supporting parts 9.

21 and 22 are guide rails of the roller chain 20.

The movable body 15 is provided with a locking device 23 . This locking device 23 includes a pair of clamping pieces 26 and 27 that are supported at one end on the movable body 15 so as to be vertically swingable through support shafts 24 and 25, and that extend in front and back opposite directions and intersect with each other. It is provided with a slide cam 29 that slides back and forth on the lower side of the pieces 26 and 27 with a pair of side plates 28. Slide cam 2
Reference numeral 9 denotes a convex portion 30 for pushing up the pair of clamping pieces 26 and 27 and holding the pair of clamping pieces 26 and 27 in an engaging posture in which the engaged portion 11 is clamped from the front and back; A pair of clamping pieces 26 adjacent to the conveyor conveyance direction side than 30
, 27 are moved downward to hold the pair of extraction pieces 26, 27 in a disengaged position in which they are disengaged downward from the moving path of the engaged portion 11. This slide cam 2
9, the convex part 30 and the concave part 31 are a pair of clamping pieces 26, 27
It is determined by a spring roller 32 so that it is alternatively held in a predetermined position below. As is well known, the spring roller 32 includes a roller that is pressed against the upper surface of the slide cam 29 by a spring.
By fitting this roller into a recess provided on the upper surface of the slide cam 29, unexpected movement of the slide cam 29 is prevented. Reference numerals 33 and 34 indicate cylinder-piston units as locking device control means, and these cylinder-piston units 33 and 34 are provided on both sides of the reciprocating movement path of the movable body 15, and the piston rod 35 thereof is , 36, the slide cam 29 can be pressed and moved.

Reference numeral 37 denotes a slat position fixing means, which is provided at each position of each conveyed object support part 9 when the conveyor 1 is stopped, and is used to clamp the rod-shaped body 10 forming the engaged part 11 from the front and back. It is composed of a pair of clamp arms 38, 39, a lifting member 40, toggle links 41, 42 that connect both arms 38, 39 and the lifting member 40, and a cylinder/piston unit 43 that raises and lowers the lifting member 40. By lowering the elevating member 40, the pair of clamp arms 38, 39 hold the rod-shaped body 10 from the front and back, and by raising the elevating member 40, the pair of clamp arms 38, 39 move the moving path of the rod-shaped body 10. Open and evacuate downward.

Next, the method of use and effect will be explained.

The state shown in FIG. 1 is the state immediately after the slat conveyor 1 has been driven by a constant stroke, and after this, each of the supporting parts 9 stopped at each stop position D to D is fixed at a predetermined position by the slat position fixing means 37. Fixed precisely in position. That is, as shown in FIG. 6, the cylinder/piston unit 4
3, the elevating member 40 is raised, and the pair of clamp arms 38 and 39 are used to support the rod-shaped body 10 belonging to each support part 9 from the front and rear. As shown in FIGS. 1 and 2, at the two stopping positions F and G where the center portion of the rod-shaped body 10 is held between the pair of holding pieces 26 and 27 of the locking device 23, As shown in FIG. 5, the position fixing means 37 may be provided at two locations on both sides of the locking device 23, and at one location in the center for the other locations. At the same time as the above-mentioned slat position fixing action or immediately after the action is completed, the cylinder/piston unit 33 adjacent to the movable body 15 at the forward movement completion position (i.e., the stop position G) is actuated, and the piston rod 35 causes the fourth
The slide cam 29 is pressed and moved rearward as shown by the virtual circle in the figure, and the recess 31 is moved to a position below the pair of clamping pieces 26, 27. As a result, the pair of clamping pieces 26, 27
swings downward around the support shafts 24 and 25 due to its own weight (or spring force), and assumes a detached attitude with respect to the engaged portion 11. Next, as shown in FIG. 2, the driving roller chain 20 is reversed to move the movable body 15 backward to a predetermined position (one position before the stop position F), and then as shown in FIG. The unit 34 is operated and the slide cam 29 on the movable body 15 is pushed forward by the piston rod 36.

As a result, the convex portion 30 of the slide cam 29 enters the lower side of the pair of hog-holding pieces 26, 27, and the pair of hog-holding pieces 26,
27 is pushed up, the pair of clamping pieces 26, 27 take an engaging posture in which they hold the engaged portion 11, which is at the stop position, several times from the front and back. At the same time, the cylinder/piston unit 43 of each slat position fixing means 37 is actuated to lower the elevating member 40, thereby opening the pair of clamp arms 38 and 39 and retracting it below the movement path of the rod-shaped body 10. Thereafter, by rotating the driving roller chain 20 in the forward direction and moving the movable body 15 forward by a predetermined stroke along the guide rail 16, the slide conveyor 1' is rotated in the conveying direction by the unit feed amount. become.

By repeating the above action, the conveyed object supported on each support part 9 is conveyed intermittent from stop position A to stop position (stop positions A to C are not shown), and each stop Predetermined work is done while the machine is stopped at positions B to G,
At the stop position, it is carried out of the conveyor.

Even if the roller chain 3 is stretched due to wear or the like on the inter-link connecting portions of the roller chain 3, the pair of clamp arms 38 and 39 in the slat position fixing means 37 will keep the clamping arms 38 and 39 in place at each of the conveyed object support parts 9. By holding the engaged portions 11 from the front and back, each of the conveyed object supporting portions 9 is stopped and fixed at a predetermined position with a constant interval, but if the elongation of the low chain 3 becomes large, the movement becomes impossible. The further the transported object support section 9 is located further to the rear than the transported object support section 9 which receives the feeding action integrally with the body 15, the further the transported object support section 9 will stop at the rearward position from the predetermined stop position.

Therefore, when the pair of clamp arms 38 and 39 of the slat position fixing means 37 at a predetermined stop position performs a horizontal holding operation, one of the clamp arms 38 and 39 and the corresponding object support part 9 are There is a risk that an inappropriate sliding gap may occur between the engaging part 11 and the side surface thereof, or that one of the clamp arms 38 and 39 collides with the lower side of the engaged part 11, making it impossible to clamp the engaged part 11. In order to avoid such a situation, when the elongation of the roller chain 3 exceeds a certain level, the adjustment screw 14 in the chain elongation adjustment means 12 between the respective conveyed object supports 9 is rotated to In order to return the interval between the parts 9 to a predetermined length, the elongation of the roller chain 3 is absorbed.

In the slat conveyor of the present invention, in a freely movable slat conveyor in which supported parts for transported objects are provided at equal intervals as shown in the above embodiment, the engaged parts are connected to the slats belonging to each supported part for transported objects. and a slat position fixing device for fixing the position of the slats belonging to each conveyed object support section, and a slat position fixing means for fixing the position of the slats belonging to each conveyed object support section. The present invention is characterized in that a chain elongation adjustment means is interposed at a position corresponding to each conveyed object support part of the chain connecting the two in an endless manner.

According to such a structure of the present invention, compared to a type in which a motor drives a gear mechanism that hangs a roller chain with slats attached, the roller chain is always stopped when stopped regardless of the extension of the roller chain. It is possible to accurately maintain the position of each conveyed object support part, and therefore it can be effectively used as a conveyance means in an assembly line or a test line. The bag makes it possible to smoothly and reliably stop each conveyed object support section at a predetermined position even if the chain stretches unduly.

[Brief explanation of drawings]

Figures 1 and 2 are schematic side views explaining the operation, Figure 3 is a side view of the main parts showing the state at the start of conveyor drive, and Figure 4
The figure is a side view of the main part showing the state when the conveyor drive is completed, FIG. 5 is a longitudinal sectional front view of the main part, and FIG. 6 is a side view showing the slat position fixing means. 1...Freely movable slat conveyor, 2, 2a
... Slat, 6 ... Conveyance route, 8.
... Disposable tool for supporting the transported object, 9... Transported object supporting section, 11... Engaged section, 12... Chain elongation adjustment means, 14. ...adjustment screw, 15.
... Reciprocating movable body, 20 ... Drive roller chain, 23 ... Locking device, 26, 27.
...Pinching piece, 29...Slide cam, 3
0. ．．・．． ．．・Convex part, 31... Concave part, 32...
...Spring lo-fu, 33, 34, 43... Cylinder/piston unit, 37... Slat position fixing means, 38, 39... Clamp arm. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Scope of Claims] 1. In a freely movable slat conveyor in which supported parts for transported objects are provided at equal intervals, an engaged part is connected to the slats belonging to each supported part for transported objects, and An intermittent feeding device that feeds the slat conveyor intermittently at a constant stroke via an engaging portion, and a slat position fixing means that fixes the position of the slats belonging to each conveyed object support portion are provided, and each slat is passed through the conveyor in an endless manner. A slat conveyor for intermittent feeding comprising a chain elongation adjusting means interposed at a position corresponding to each conveyed object support part of the chain connected to the conveyor. 2. The slat conveyor according to claim 1, wherein the chain elongation adjusting means comprises a chain link whose length can be freely adjusted by an adjustment screw having left and right reverse threads and having a rotation operation section in the center.