CN214358759U - Material clamping mechanism, multi-piece feeding device and arch frame main rib feeding device - Google Patents

Abstract

The utility model discloses a material clamping mechanism, a plurality of feeding devices and an arch frame main rib feeding device, wherein the clamping mechanism comprises a box-shaped material box, a material penetrating channel for long-strip-shaped materials to pass through is formed at the box bottom of the box-shaped material box, a cam or an eccentric wheel is arranged beside the material penetrating channel, and the cam or the eccentric wheel is rotatably arranged between two side walls of the box-shaped material box through a hinge pin; a spring component for driving the cam or the eccentric wheel to rotate is arranged between the box-shaped material box and the cam or the eccentric wheel so as to narrow the material penetrating channel. The multiple feeding devices are formed by arranging a plurality of clamping mechanisms on a base frame driven by a pushing oil cylinder; the arch frame main rib feeding device is composed of a plurality of feeding devices, wherein the pushing oil cylinder and the base frame can swing in the same plane. The beneficial effects of the utility model are that, hold the mechanism and can hold and release the material automatically under the arm, its simple structure, the overall arrangement is compact. The multiple feeding devices can realize synchronous pushing of multiple materials; the arch center main rib feeding device can meet the requirement of continuous production and feeding of arch center welding.

Description

Material clamping mechanism, multi-piece feeding device and arch frame main rib feeding device

Technical Field

The utility model relates to a continuous production line's feed auxiliary facilities, especially a material hold mechanism, many material feeding unit and bow member owner muscle material feeding unit under arms.

Background

In continuous blanking equipment or welding production lines, intermittent feeding is required to be matched for ensuring normal continuous production. The existing intermittent feeding has various modes, including a swing rod feeding mode with a traditional structure, a reciprocating sliding table feeding mode, a robot and truss manipulator feeding mode in an intelligent production line and the like. The material clamping modes of the feeding modes comprise mechanical clamping jaws, magnetic adsorption, vacuum adsorption and the like. The mechanical clamping jaw is mainly driven by power of an air cylinder, a hydraulic cylinder, an electric cylinder or a linear module with a complex structure. In addition, the feeding modes generally have higher requirements on environmental adaptability, such as requirements on air cleanliness, temperature, humidity and the like; the requirements for small size and relatively high precision of applicable objects are met. Therefore, most of these feeding mechanisms can be used only in the field of machining. The method is difficult to be applied to large-scale welding parts such as house trusses, tunnel arches and the like with low requirements on cleanliness, temperature and welding precision of processing environments, and has the defects of complex structure, multiple fault points, difficult maintenance and high use and maintenance cost. In the continuous welding of the truss, the steel skeleton and the arch frame, a plurality of main reinforcements are conveyed simultaneously, and the conventional feeding device cannot meet a plurality of centralized arrangement requirements.

In addition, the most effective mode for manufacturing the common grid arch in the existing tunnel arch is a film welding mode combining a welding clamp and a welding robot, so that the efficiency is improved, and the welding quality is ensured. The existing arch frame moulding bed welding method is characterized in that after a welding lug on a ridge surface of a truss is independently welded, a plurality of welding lugs are combined together. Firstly, the main ribs are pressed and bent by a forming die to be plastically deformed into an arch shape, and then two arch-shaped main ribs forming the soldering lug are fixed on a tire membrane to be welded with the ribs; secondly, two main ribs forming the soldering lug are fixed on the tire membrane, the tire membrane forms an arch under elastic deformation, and then the flower ribs are welded to form a stable structure, which is also the highest welding mode in the prior art. Because the two manufacturing modes can only form one soldering lug in the grid arch, the integral formation of the arch also needs to combine and weld the soldering lugs together, and in the polygon with the odd number of the cross section of the arch, or the double-main rib structure is adopted, so that after the soldering lugs with the same number of sides are welded, the soldering lugs are combined and welded together through direct welding between the main ribs; or when the arch center is combined, the ribs on two prismatic surfaces need to be welded, so that the manufacturing speed of the arch center is severely limited. Therefore, in the manufacturing of the arch, the requirement of holding and intensively arranging a plurality of materials is also needed to provide guarantee for the continuous welding of the arch or the soldering lug forming the arch. However, because the main ribs with different radians have different lengths, when a plurality of main ribs are conveyed simultaneously, a plurality of feeding devices which are simply combined together cannot meet the feeding requirement. For this reason, further improvement is required.

Disclosure of Invention

The utility model discloses a first purpose is to hold the not enough of mechanism structure complicacy under the arm to the material in current intermittent type pay-off, a simple structure's material is held the arm and is constructed, this mechanism is through setting up cam or eccentric wheel on the material passageway next door, utilize the eccentric principle of compressing tightly to implement compressing tightly to rectangular material, so that hold the material and move together and send to the target location, and in the motion of returning journey, cam or eccentric wheel under the material drive antiport, the pay-off is realized to the release material, so circulation reaches clearance pay-off purpose. A second object of the present invention is to provide a feeding device to satisfy the requirement of continuous welding of linear type truss or steel skeleton. The third purpose of the utility model is to provide a main muscle material feeding unit for bow member welded to satisfy the bow member and weld the demand in succession.

In order to achieve the first objective, the present invention adopts the following technical solution.

A material holding mechanism comprises a box-shaped material box, wherein a material penetrating channel for a strip-shaped material to pass through is formed at the box bottom of the box-shaped material box, a cam or an eccentric wheel is arranged beside the material penetrating channel, and the cam or the eccentric wheel is rotatably arranged between two side walls of the box-shaped material box through a hinge pin; a spring component for driving the cam or the eccentric wheel to rotate is arranged between the box-shaped material box and the cam or the eccentric wheel, so that the material penetrating channel is narrowed.

By adopting the material clamping mechanism in the technical scheme, in the feeding stroke, the strip-shaped material has a reverse withdrawing trend relative to the material clamping mechanism, under the action of friction force between the material and the cam or the eccentric wheel, the withdrawing trend drives the cam or the eccentric wheel to rotate along the moving direction, the rotation narrows a material channel, the channel wall is matched with the working surface of the cam or the eccentric wheel to press the strip-shaped material on the box-shaped material box, and the strip-shaped material is clamped by the material clamping mechanism and is dragged and moved by the material clamping mechanism; after the feeding stroke is in place, the materials are received by the destination component and the position is kept unchanged, the box-shaped material box presents a retraction trend which is the same as the situation that the strip-shaped materials are inserted into the box-shaped material box, the cam or the eccentric wheel is driven by the materials to rotate towards the direction of loosening the materials, the state of extruding the materials is released, the materials are released, so that the material clamping mechanism independently returns, and the feeding circulation in a pushing or pulling mode is completed through automatic locking and unlocking of the materials. The multi-material clamping mechanism is simple in structure, compact in layout, few in fault points and low in fault rate, and is beneficial to centralized arrangement of a plurality of material clamping mechanisms on the same carrier, synchronous equal-length feeding of a plurality of materials is achieved, and powerful guarantee is provided for a continuous production mode of welding a linear truss or an arch. And the cam or the eccentric wheel can realize the reliable compaction of materials with different thicknesses or different diameters, and the automatic compensation after the materials are worn, thereby prolonging the service life. Wherein, the spring component utilizes the elastic force applied on the cam or the eccentric wheel to drive the cam or the eccentric wheel to keep a locking state, so as to improve the locking reliability and ensure the stability of repeated pushing distance. Wherein, the spring component comprises a spring piece, an extension spring, a compression spring, a torsion spring and the like; the spring members with different structural forms are adopted, the difference is only that the installation positions and the installation modes are different, the same locking and holding acting force loading effect can be achieved, and obviously, the rubber band also belongs to an extension spring; belleville springs also belong to the compression springs. In addition, the cam or the eccentric wheel can be arranged in a single or double mode, and the clamping mechanism with a single structure needs to provide a material leaning foundation by means of a third component for arranging the cam or the eccentric wheel, and the material is clamped by means of the leaning foundation.

Preferably, the cam working surface of the cam or the eccentric wheel is provided with patterns or one-way teeth. The characteristic of convex-concave unevenness of patterns is utilized to increase the friction coefficient between the cam or eccentric wheel and the material, increase the friction resistance, avoid slipping, improve the feeding reliability and ensure the feeding precision; the cam or the eccentric wheel is made to form a pawl similar to that in ratchet-pawl mechanism by adopting a one-way tooth structure, so that the slip hidden trouble between the cam or the eccentric wheel and materials is eliminated.

Preferably, a limiting component is fixedly connected to the box-shaped material box and limits the limit position of the cam or the eccentric wheel in rotation. The limiting component is used for limiting the limit position of the cam or the eccentric wheel rotating towards the locking direction, so that the material penetrating channel keeps a large enough opening degree, the material is conveniently inserted smoothly when penetrating, and the operation convenience is improved.

Preferably, the cam or eccentric is in the shape of a sector or a lever. The sector shape is favorable for the requirement of compact structure; the lever shape provides a selection path to increase the flexibility of selection.

In order to achieve the second objective, the present invention adopts the following technical solutions.

A multi-piece feeding device comprises a base frame and a pushing oil cylinder for pushing the base frame to move; the base frame is provided with at least two material clamping mechanisms for realizing the first purpose.

The multiple-piece feeding device adopting the technical scheme has the advantages that the multiple material clamping mechanisms are arranged on the same base frame driven to move by the pushing oil cylinder by utilizing the characteristics of simple structure and compact layout of the material clamping mechanisms, the automatic locking and unlocking functions of the material clamping mechanisms realize intermittent equal-length synchronous feeding of a plurality of main ribs, truss beams or steel skeleton beams on the steel skeleton truss, the feeding length control can be conveniently realized by controlling the position of the base frame through the travel switch, the repeated precision requirement of the feeding length can be realized, the repeated welding work content can be completed on a fixed welding station, and therefore, the guarantee is provided for realizing the continuous welding production of the linear type truss or the steel skeleton, the production efficiency is obviously improved, the production cost is reduced, the labor consumption is saved, and the potential safety hazard is reduced or eliminated.

Preferably, the base frame is supported by the supporting platform, and the lower end of the base frame is provided with a roller. So as to reduce the motion resistance of the base frame, reduce the specification of the pushing oil cylinder and reduce the energy consumption.

Preferably, the base frame comprises two vertical plates which are vertically and parallelly arranged, and the two vertical plates are connected through a connecting plate; the material clamping mechanism is arranged on the connecting plate; the pushing oil cylinder is connected with the vertical plate on the corresponding side. So as to utilize two risers to increase longitudinal structure stability, guarantee the bed frame and remove the security. Simultaneously, provide the concealed space that sets up for material holding mechanism, the convenient overall arrangement of structure.

Preferably, the vertical plate is provided with a strip-shaped hole for the strip-shaped material to pass through; and the connecting plate is provided with a strip hole for connecting the material clamping mechanism. The number and the position of the holes for the strip-shaped materials to pass through are determined according to the positions of the truss girders or the steel skeleton girders on the welded products, the holes are arranged into strips, and the holes for installing the material clamping mechanism on the connecting plates are arranged into long strip holes so as to adapt to the adjustment requirements of the welded products on the same section shape and different section dimensions, thereby widening the application range.

In order to achieve the third objective, the present invention adopts the following technical solutions.

The arch frame main rib feeding device is composed of a plurality of feeding devices for achieving the second purpose, and the base frame and the pushing oil cylinder can swing in the plane of the supporting platform.

The arch centering main rib feeding device adopting the scheme is suitable for main rib feeding when a tunnel arch centering or a soldering lug forming the arch centering is continuously welded under a tire mold welding condition, the base frame is driven by the oil cylinder to move back and forth, and when the base frame moves forward, the corresponding number of main rib reinforcing steel bars are clamped by the at least two material clamping mechanisms arranged on the base frame to move along with the base frame; when the base frame returns, the delivery part of the main reinforcement steel bar is retained on the tire membrane and is relatively fixed with the tire membrane, and the material clamping mechanism releases the clamping state with the steel bar through the unidirectional characteristic and returns along with the base frame; the moving direction of the base frame is consistent with the telescopic direction of the oil cylinder piston, and synchronous pushing of a plurality of steel bars at the equal-diameter arc line on the arch frame can be achieved by utilizing the elastic deformation characteristic of the steel bars. The spiral convex rib of the deformed steel bar and the working surface of the clamping jaw cam or the eccentric wheel can form a friction connection pair, so that automatic locking and automatic unlocking are realized. When the reinforcing bar that the propelling movement is located the different radians of bow member simultaneously, because the reinforcing bar receives the restriction of staying paragraph on the fetal membrane, the paragraph radian that needs to be sent out is the same and length is different, through all setting up bed frame and propelling movement hydro-cylinder to the structure that can swing in the coplanar to combine with the one-way characteristic of material clamping mechanism ingeniously, under the reinforcing bar effect of staying the section on the fetal membrane, the bed frame can be according to the gesture of pay-off length variation self-adaptation swing suitable angle. Because the base frame is supported on the supporting platform and has freedom of movement and rotation in the supporting surface, when the oil cylinder can also swing in the plane of the supporting platform, the base frame can be automatically adjusted to a reasonable posture and position. The base frame and the pushing oil cylinder can swing in the plane of the supporting platform, and can be hinged by a pin shaft hinge structure with a hinge axis perpendicular to the plane of the supporting platform, and can also be hinged by a spherical hinge structure with universal characteristic.

Preferably, the material clamping mechanism is connected with the connecting plate only through a single mounting hole on the box-shaped material box. The rotatable characteristic of single mounting hole connection is utilized, so that when arches with different radians are welded, the material clamping mechanism can rotate with the base frame in a self-adaptive manner.

The beneficial effects of the utility model are that, the material holds the mechanism under the arms and can hold and release the material automatically, its simple structure, the overall arrangement is compact, and the fault point is few, and the fault rate is low, does benefit to holding the mechanism with the arms with a plurality of materials and concentrates on arranging on same carrier, realizes many synchronous pay-offs, provides the powerful guarantee for truss or bow member welded continuous production mode. The plurality of feeding devices can realize equidistant synchronous pushing of a plurality of materials by arranging a plurality of material clamping mechanisms on the same base frame, and are suitable for continuous welding production of linear type trusses and steel frameworks; the arch center main rib feeding device is improved on a plurality of feeding devices, so that the continuous welding production of the arch center or the arch center welding sheets can be realized, and the arch center welding production efficiency is obviously improved.

Drawings

Fig. 1 is a schematic structural view of the material clamping mechanism in the feeding stroke state of the present invention.

Fig. 2 is a schematic structural view of the material clamping mechanism in the return stroke state of the present invention.

Fig. 3 is a schematic structural diagram of a material holding mechanism according to another structural form of the present invention.

Fig. 4 is a schematic front view of the structure of a plurality of feeding devices in the utility model.

Fig. 5 is a view of the utility model in the direction a of fig. 4.

Fig. 6 is a schematic view of a part of the structure of a plurality of feeding devices of the present invention, wherein the material holding mechanism is in a feeding stroke state.

Wherein, fig. 4, fig. 5 and fig. 6 also show the structure of the arch frame main rib feeding device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the scope of the embodiments described herein.

Embodiment 1, refer to fig. 1 and 2, a material clamping mechanism comprises a box-shaped material box 4, a material passing channel for a strip-shaped material to pass through is formed at the box bottom of the box-shaped material box 4, a cam or eccentric wheel 5 is arranged beside the material passing channel, and the cam or eccentric wheel 5 is rotatably arranged between two side walls of the box-shaped material box 4 through a hinge pin 6; a spring component 7 for driving the cam or the eccentric wheel 5 to rotate is arranged between the box-shaped material box 4 and the cam or the eccentric wheel 5 so as to narrow the material penetrating passage.

Wherein, the cam or eccentric wheel 5 is in a sector shape; the spring component 7 is composed of a compression spring, the compression spring is arranged in a spring mounting tube 7a, the spring mounting tube 7a is fixed on the box-shaped material box 4, a tube orifice at one end is provided with a blocked plug 7b so that the tube orifice forms a blind hole structure, the free end of the spring extends out of an open tube orifice and is abutted against the side surface of the cam or the eccentric wheel 5, the abutting point is close to the elevation end of the working curved surface of the cam or the eccentric wheel 5, and the distance from the center of the cam or the eccentric wheel 5 to the edge of the working curved surface is gradually reduced from the elevation end to the low-end of the working curved surface; the cam or eccentric 5 hinge axis is located on its central axis. The cam working surface of the cam or the eccentric wheel 5 is provided with patterns or one-way teeth 5 a; a limiting component 8 is fixedly connected to the box-shaped material box 4, and the limiting component 8 limits the limit position of the cam or the eccentric wheel 5 in rotation; the stop member 8 is constituted by a member, such as a pin, a post or a nail, the stop member 8 being fixedly connected to the magazine 4 and being intended to abut against the lateral edge of the cam or eccentric 5 at the lower end of the working curve.

In the embodiment, the material clamping mechanism is only provided with a single cam or eccentric wheel 5, a box-shaped material box 4 provided with clamping jaws forms a leaning foundation of a strip-shaped material, and when the box-shaped material box 4 is in a U-shaped structure, the material is leaned against by the groove wall of the bottom groove of the box-shaped material box 4; under the condition that the box-shaped material box 4 is provided with plugging plates at two ends of the U shape, material through holes can be formed in the plugging plates, and when the hole wall is away from the bottom wall of the groove, part of the hole wall close to the bottom wall forms a leaning foundation; when the hole wall close to the bottom of the groove is superposed with the bottom wall of the groove, the groove wall of the bottom groove of the box-shaped material box 4 is propped against the material.

In this embodiment, the spring member 7 may be a leaf spring, an extension spring, a compression spring, a torsion spring, or the like, in addition to being formed of a compression spring; the spring members with different structural forms are adopted, the difference is only that the installation positions and the installation modes are different, only the same elastic loading effect can be achieved, and obviously, the rubber band also belongs to an extension spring; belleville springs also belong to the compression springs. The installation manner of the spring member is conventional in the art and need not be described in detail.

In embodiment 2, referring to fig. 3, the cams or eccentrics 5 are arranged in two, a material passing channel is formed between the two cams or eccentrics 5, and the two cams or eccentrics 5 jointly form automatic clamping and automatic releasing of the elongated material.

The working process of the material clamping mechanism of examples 1 and 2 is as follows, the moving direction is defined as the feeding stroke when the material clamping mechanism moves in the direction shown by the upper arrow in fig. 1, and the moving direction is defined as the return stroke when the material clamping mechanism moves in the direction shown by the upper arrow in fig. 2; when the box-shaped material box 4 moves according to the feeding stroke, the material clamping mechanism performs automatic locking through the cam or the eccentric wheel 5, and clamps the strip-shaped materials to move synchronously until the end point of the feeding stroke; after the feeding is finished, the long-strip-shaped materials are received and retained at the sending-out position, the material clamping mechanism is automatically unlocked through the cam or the eccentric wheel 5 to release the long-strip-shaped materials, and the box-shaped material box 4 independently returns in the reverse direction indicated by an arrow at the upper part of the figure 2 until the box-shaped material box returns to the original position, so that one-time feeding circulation of the long-strip-shaped materials is finished. In this state of the return stroke, which is equivalent to when the box-shaped material box 4 is stationary, the strip-shaped material relatively moves with respect to the box-shaped material box 4 in the direction indicated by the arrow at the lower part of fig. 2, which is the same as the state in which the strip-shaped material is inserted into the material passage from the right side of fig. 2.

Embodiment 3, referring to fig. 4, 5 and 6, a multi-piece feeding device comprises a base frame 1 and a pushing cylinder 2 for pushing the base frame 1 to move; the base frame 1 is provided with at least two material holding mechanisms of embodiments 1 or 2.

Wherein, bed frame 1 is supported by supporting platform 3, and bed frame 1 lower extreme is equipped with gyro wheel 9. The base frame 1 comprises two vertical plates 1a which are vertically and parallelly arranged, and the two vertical plates 1a are connected through a connecting plate 1 b; the material clamping mechanism is arranged on the connecting plate 1 b; the pushing oil cylinder 2 is connected with the vertical plate 1a on the corresponding side; a strip-shaped hole for a strip-shaped material to pass through is formed in the vertical plate 1 a; the connecting plate 1b is provided with a long hole for connecting the material clamping mechanism.

The rest of the structure of this embodiment is the same as that of embodiment 1 or 2, and is not described herein again.

Embodiment 4, referring to fig. 4, 5 and 6, an arch main rib feeding device is composed of a plurality of feeding devices of embodiment 3, and both the base frame 1 and the pushing cylinder 2 can swing in the plane of the supporting platform 3; specifically, bed frame 1 and propelling movement hydro-cylinder 2 are articulated through first articulated shaft 11, and propelling movement hydro-cylinder 2 articulates on hydro-cylinder erection support 10 through second articulated shaft 12, is relatively fixed ground setting with supporting platform 3 on the hydro-cylinder erection support 10, and first articulated shaft 11 and second articulated shaft 12 all are with supporting platform 3 on the vertical setting of holding surface vertically.

Wherein, the material holding mechanism is connected with the connecting plate 1b only through a single mounting hole 4a on the box-shaped material box 4.

The rest of the structure of this embodiment is the same as embodiment 3, and is not described herein again.

In this embodiment, the hinge joint of the base frame 1 and the pushing cylinder 2, and the hinge joint of the pushing cylinder 2 and the cylinder mounting support 10 may also be replaced by a spherical hinge joint structure.

In the implementation, when the device is used for welding and feeding the arch, the number of the material clamping mechanisms and the number of the strip-shaped holes for the strip-shaped materials to pass through on the base frame 1 are equal to the number of the main ribs of the arch, and if the four-prismatic arch needs to be provided with 4 material clamping mechanisms; when the device is used for welding arch welding sheets, the number of the material clamping mechanisms and the number of the strip-shaped holes for the strip-shaped materials to pass through on the base frame 1 are generally two. The attached drawings show the arrangement mode of three material clamping mechanisms, and the three material clamping mechanisms can be used for welding triangular arches with triangular sections or triangular arches for short.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A material clamping mechanism is characterized by comprising a box-shaped material box (4), wherein a material penetrating channel for a strip-shaped material to pass through is formed at the box bottom of the box-shaped material box (4), a cam or eccentric wheel (5) is arranged beside the material penetrating channel, and the cam or eccentric wheel (5) is rotatably arranged between two side walls of the box-shaped material box (4) through a hinge pin (6); a spring component (7) for driving the cam or the eccentric wheel (5) to rotate is arranged between the box-shaped material box (4) and the cam or the eccentric wheel (5) so as to narrow the material penetrating channel.

2. Material clamping mechanism according to claim 1, characterized in that the cam or eccentric (5) has a cam face with a pattern or unidirectional teeth (5 a).

3. The material clamping mechanism as claimed in claim 1, wherein a limiting member (8) is fixedly connected to the box-shaped magazine (4), and the limiting member (8) limits the limit position of the cam or eccentric wheel (5) in rotation.

4. The material clamping mechanism as claimed in claim 1, wherein said cam or eccentric (5) is in the shape of a sector or a lever.

5. A multi-piece feeding device comprises a base frame (1) and a pushing oil cylinder (2) for pushing the base frame (1) to move; the material clamping device is characterized in that at least two material clamping mechanisms according to any one of claims 1 to 3 are arranged on the base frame (1).

6. A multiple piece feeding device according to claim 5, characterised in that the base frame (1) is supported by a support platform (3) and that the base frame (1) is provided with rollers (9) at its lower end.

7. The multiple item feeding device according to claim 5, characterised in that the base frame (1) comprises two vertical and parallel risers (1a), the two risers (1a) being connected by a connecting plate (1 b); the material clamping mechanism is arranged on the connecting plate (1 b); the pushing oil cylinder (2) is connected with the vertical plate (1a) on the corresponding side.

8. A multiple-piece feeding device according to claim 7, characterised in that the risers (1a) are provided with holes for the passage of elongated material; the connecting plate (1b) is provided with a long hole for connecting the material clamping mechanism.

9. An arch king wire feeder, characterized in that it consists of a multi-piece feeder according to any of claims 5-8, and that the base frame (1) and the push cylinder (2) are both able to swing in the plane of the support platform (3).

10. The arch king wire feeding device of claim 9, wherein the material holding mechanism is connected with the connecting plate (1b) only through a single mounting hole (4a) on the box-shaped magazine (4).

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