Automatic frame bar straightening feeding device

Abstract

The application relates to a kind of frame strip automatic regular feeding device, solve the existing frame assembly mechanism, frame strip uses manual feeding placement, production efficiency is low, and the problem of great labor intensity.The left feeding mechanism and the right feeding mechanism are arranged on the base of the device, the left feeding mechanism and the right feeding mechanism are mutually symmetrical, the structure of the left feeding mechanism is as follows:the left feeding mechanism includes a vertical left base plate, a V-shaped feeding frame is arranged on the front side of the left base plate to support the end of the frame strip, a feeding belt is arranged on the right side of the rear wall of the V-shaped feeding frame, a regularizing mechanism is arranged below the top rear side of the feeding belt, a feeding chain is arranged on the rear side of the regularizing mechanism, and L-shaped pawls are arranged on the feeding chain to support the frame strip.The application uses left-right synchronous feeding mechanism to automatically feed the frame strip, and the orientation of the inclined surface of the end of the frame strip is regularized by inclined surface support and pawl during the feeding process, so that the frame strip can maintain a uniform posture for feeding.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of frame assembling equipment, and relates to a frame strip feeding device for frame assembling, in particular to an automatic frame strip regularizing feeding device. BACKGROUND

[0002] Decorative frames such as photo frames and picture frames are usually assembled into a frame shape after the end-to-end butt joint of frame strips. The frame can be triangular or quadrangular, or pentagonal or hexagonal. Each straight side of the frame is a frame strip. The frame strip is usually linear, and the two ends of the frame strip are beveled and correspond to the corners of the frame. Since the bevels of the frame strips have fixed orientation requirements when the frame strips are combined into a frame, automatic feeding is difficult. The existing frame assembling mechanism requires manual feeding of each side of the frame one by one, which is low in production efficiency and high in labor intensity. SUMMARY

[0003] The present application aims to solve the problem of low production efficiency and high labor intensity of manual frame strip feeding in the existing frame assembling mechanism, and provides an automatic frame strip regularizing feeding device. The device can automatically feed frame strips and adjust the posture of the frame strips during feeding, so as to ensure that the frame strips are regularized to the same orientation during feeding and prepare for the subsequent frame assembling process.

[0004] The technical scheme adopted by the present application to solve the technical problem is as follows: an automatic frame strip regularizing feeding device, comprising a base, a left feeding mechanism and a right feeding mechanism are arranged on the base, the left feeding mechanism and the right feeding mechanism are symmetrical to each other, the end face of the frame strip is beveled, and the two ends of the frame strip are respectively arranged on the left feeding mechanism and the right feeding mechanism for synchronous feeding. The left feeding mechanism comprises a vertical left base plate, a V-shaped feeding frame for arranging the end of the frame strip is arranged on the front side of the left base plate, an inclined feeding belt is arranged on the right side of the rear wall of the V-shaped feeding frame, a regularizing mechanism is arranged below the top rear side of the feeding belt, an upper feeding chain is arranged on the rear side of the regularizing mechanism, and L-shaped pawls for carrying the frame strip are arranged at equal intervals on the upper feeding chain.

[0005] The left feeding mechanism and the right feeding mechanism are symmetrically arranged and synchronously actuated. The frame strip is horizontally placed between the left feeding mechanism and the right feeding mechanism, and the two ends of the frame strip are horizontally placed in the V-shaped feeding frame of the left feeding mechanism and the right feeding mechanism. The rotation of the feeding belt drives the frame strip upward and falls into the regularizing mechanism. The posture of the frame strip is adjusted by the regularizing mechanism, so that the frame strip is adjusted to a posture with the bevel facing downward. When the frame strip slides along the arc surface to the L-shaped pawl, the bevel of the frame strip faces forward (the feeding side is forward, and the output side is rearward). Finally, the frame strip is output by following the rotation of the upper feeding chain while abutting against the L-shaped pawl. The posture during output is determined by the posture of the L-shaped pawl.

[0006] As preferred, the V-shaped feeding frame can swing, including front side wall and rear side wall with V-shaped angle, the top of the front side wall of the V-shaped feeding frame is hinged to the left base plate, the bottom of the rear side wall of the V-shaped feeding frame is provided with a tension spring between the left base plate, and the left base plate is provided with a limiting block corresponding to the top of the rear side wall of the V-shaped feeding frame. The V-shaped feeding frame can swing to adjust. When the number of frame strips is large, the weight is large, the tension of the tension spring is overcome, the V-shaped feeding frame swings forward as a whole, at this time, the rear side wall of the V-shaped feeding frame forms a certain intersection angle with the feeding belt, the material at the lower part of the V-shaped feeding frame does not form contact with the feeding belt, the material at the upper part of the V-shaped feeding frame is first taken out by the feeding belt, with the reduction of the material in the V-shaped feeding frame, the V-shaped feeding frame swings backward as a whole under the action of the tension spring, the material at the bottom of the V-shaped feeding frame is in contact with the feeding belt and is taken out, so that the ordered feeding from top to bottom can be maintained, and the frame strip feeding inconsistency of the left feeding mechanism and the right feeding mechanism can be reduced to cause the frame strip to tilt and fall or jam.

[0007] As preferred, the surface of the feeding belt is provided with convex ribs at equal intervals to drive the frame strip feeding.

[0008] As preferred, the left feeding mechanism regularizing mechanism structure is as follows: the top of the regularizing mechanism is a swing support, the top surface of the swing support is provided with a slope surface to the right side, which is consistent with the slope of the frame strip end surface, the upward protrusion at the rear end of the swing support has a triangular block, and the inclined edge of the triangular block extends along the slope surface of the swing support; the bottom of the regularizing mechanism is provided with a rotating bar driven by an L-shaped paw, and the rotating bar is provided with a first gear in linkage with the rotating bar, the bottom of the swing support is provided with a second gear, a sliding block is provided between the first gear and the second gear, the sliding block is provided with a first rack downwardly engaged with the first gear, and the sliding block is provided with a second rack upwardly engaged with the second gear; the front side or the rear side of the sliding block is further provided with a swing bar, and when the sliding block moves upward, the swing bar swings upward and forms staggered driving of the frame strip from front to back with the swing support. The left feeding mechanism and the regularizing mechanism of the feeding mechanism are symmetrically arranged, therefore, only the structure of the left feeding mechanism regularizing mechanism is described.

[0009] Since the supporting surface of the swing support is an inclined surface, and the end of the frame strip is also an inclined surface, the posture of the frame strip falling into the swing support is only two, the inclined surface of the frame strip is upward or downward, and the remaining directions are unstable states, or automatically adjusted to the above two postures. With the rotation of the feeding chain, the L-shaped pawl drives the rotating pawl, and through the meshing of the first gear and the first rack, the sliding block is driven to the top, and the sliding block drives the swing pawl to swing to the inclined position through the meshing of the second rack and the second gear, and the swing pawl swings upward and pushes the frame strip from front to back; if the inclined surface of the frame strip is downward, it will naturally slide backward, and if the inclined surface of the frame strip is upward, the triangular block will block the bottom edge of the frame strip, at this time the swing pawl will be pushed to make the frame strip turn to the posture of the inclined surface downward and slide downward. After passing through the regulating mechanism, the sliding posture of the frame strip is unified to slide downward with the inclined surface downward, and finally the posture is unified and output with the angle of the L-shaped pawl.

[0010] As a preferred, the rear side of the swing support is provided with an arc-shaped guide block, the upper side of the arc-shaped guide block is provided with a guide inclined surface, when the swing support swings to the lowest position, the rear end of the swing support is aligned with the front end of the arc-shaped guide block, the bottom end of the arc-shaped guide block is provided with an L-shaped fixing frame, and the L-shaped fixing frame is arranged on the outer side of the feeding chain. After the frame strip slides along the arc-shaped upper side of the arc-shaped guide block with the inclined surface downward, the frame strip is in the state of the inclined surface forward, is positioned in the L-shaped fixing frame, and is taken away by the L-shaped pawl when the L-shaped pawl passes, and is fed along the feeding chain. When feeding, the L-shaped pawl adjusts the direction with the chain, the frame strip changes the direction by adhering to the L-shaped pawl, and finally is output. In this example, the L-shaped pawl of the feeding chain rotates 180 degrees between receiving the frame strip and outputting the frame strip, and the frame strip is output to the subsequent splicing process with the inclined surface backward.

[0011] As a preferred, the sliding block is slidably arranged on the left base plate, and the sliding block is further provided with a reset spring for downward reset.

[0012] As a preferred, the rear side of the top end of the feeding belt is provided with a guide block, the front side of the guide block is a front guide surface, the lower end of the front guide surface is aligned with the regulating mechanism, the rear side of the guide block is a rear guide surface, the rear guide surface faces the feeding chain and is parallel to the feeding chain, and the rear guide surface is an inclined surface matched with the inclination of the end surface of the frame strip. The front side of the guide block guides the knife strip between the feeding belt and the regulating mechanism; and the rear side of the guide block finally regulates the adhesion of the frame strip and the L-shaped pawl.

[0013] As preferred, the base is provided with fixed side plates on the left and right sides respectively, and the left and right feeding mechanisms are arranged between the two fixed side plates with adjustable spacing, and the left and right feeding mechanisms are provided with distance adjusting lead screws, and the two ends of the distance adjusting lead screws are arranged on the fixed side plates, and at least two distance adjusting sliding rails are arranged between the base and the two fixed side plates for the left and right feeding mechanisms to slide. The spacing of the left and right feeding mechanisms can be adjusted, and through the adjustment of the distance adjusting lead screws, the left and right feeding mechanisms can be synchronously moved inward or outward to adapt to frame strips of different lengths. The distance adjusting sliding rails are arranged in multiple at the front and back sides and the upper and lower parts of the left and right feeding mechanisms to ensure that the left and right feeding mechanisms remain parallel.

[0014] As preferred, the left and right feeding mechanisms are provided with a first synchronous rotating shaft for driving the feeding belt to rotate and a second synchronous rotating shaft for driving the feeding chain to rotate, and the two ends of the first synchronous rotating shaft and the second synchronous rotating shaft are rotatably arranged on the two fixed side plates. The feeding belt is provided with a driving pulley and a driven pulley, and the driving pulley can be directly connected with the first synchronous rotating shaft or adopt chain transmission. The feeding chain can be provided with a driving sprocket and multiple driven sprockets, and the driving sprocket can be directly connected with the second synchronous rotating shaft or adopt chain transmission.

[0015] As preferred, the driving devices of the distance adjusting lead screws, the first synchronous rotating shaft and the second synchronous rotating shaft are arranged between the left and right feeding mechanisms.

[0016] The left and right synchronous feeding mechanisms are adopted to automatically feed the frame strips, and the orientation of the end inclined surface of the frame strip is regularized through the inclined surface support and the pushing rod during the feeding process, so that the frame strip can be fed in a unified posture, which facilitates the subsequent frame splicing process and realizes the automatic feeding of the frame strip. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described below with reference to the drawings.

[0018] Figure 1 is a structural schematic diagram of the application.

[0019] Figure 2 is an external structure diagram of a left feeding mechanism of the application.

[0020] Figure 3 is an internal structure perspective view of a left feeding mechanism of the application.

[0021] Figure 4 is an internal structure perspective front view of a left feeding mechanism of the application.

[0022] Figure 5 is an enlarged view of structure A in Figure 4 of the application.

[0023] Figure 6 This is a structural diagram of the left-side feeding mechanism of the present invention after the frame strip is removed from the inside.

[0024] In the diagram: 1. Base; 2. Fixed side plate; 3. Left feeding mechanism; 4. Right feeding mechanism; 5. Adjustable screw; 6. First synchronous shaft; 7. Second synchronous shaft; 8. First adjustable slide rail; 9. Second adjustable slide rail; 10. Third adjustable slide rail; 11. Drive pulley; 12. Drive sprocket; 13. Frame bar; 14. Feed belt; 15. V-shaped feed frame; 16. Feeding chain; 17. L-shaped claw. 8. Guide block; 19. Regularizing mechanism; 20. Tensioning sprocket; 21. Hinge point; 22. Tensioning spring; 23. Rotating lever; 24. First gear; 25. First rack; 26. Slider; 27. Return spring; 28. Second rack; 29. ​​Swing bracket; 30. Swing lever; 31. Triangular stop; 32. Arc-shaped guide block; 33. L-shaped fixing bracket; 34. Tensioning screw; 35. Tensioning slide rail. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0026] Example: A feeding device for automatically aligning frame bars, such as... Figure 1 As shown. This device includes a base 1, with fixed side plates 2 on the left and right sides of the base respectively. A left feeding mechanism 3 and a right feeding mechanism 4 are arranged between the two fixed side plates. The distance between the left feeding mechanism 3 and the right feeding mechanism 4 is adjustable. Adjusting screws 5 pass through the left feeding mechanism 3 and the right feeding mechanism 4. The two ends of the adjusting screws 5 are mounted on the fixed side plates 2. A first adjusting slide rail 8 is arranged on the rear side of the top surface of the base. A second adjusting slide rail 9 is arranged on the front side of the waist of the two fixed side plates. A third adjusting slide rail 10 is arranged on the top of the two fixed side plates. The left feeding mechanism 3 and the right feeding mechanism 4 are slidably adjustable through the first adjusting slide rail 8, the second adjusting slide rail 9, and the third adjusting slide rail 10. A first synchronous rotating shaft 6 for driving the feed belt 14 to rotate and a second synchronous rotating shaft 7 for driving the feeding chain 16 to rotate are arranged through the left feeding mechanism 3 and the right feeding mechanism 4. The two ends of the first synchronous rotating shaft 6 and the second synchronous rotating shaft 7 are respectively rotatably mounted on the fixed side plates 2 on both sides. The drive mechanism for the adjustable lead screw 5, the first synchronous rotating shaft 6, and the second synchronous rotating shaft 7 is centrally located between the left loading mechanism 3 and the right loading mechanism 4. For example... Figure 3 As shown, the feed belt 14 is equipped with a drive pulley 11 and driven pulleys. The drive pulley 11 can be directly connected to the first synchronous shaft 6 or driven by a chain. The feeding chain 16 can be equipped with one drive sprocket 12 and multiple driven sprockets. The drive sprocket 12 can be directly connected to the second synchronous shaft 7 or driven by a chain.

[0027] The base 1 is provided with a left feeding mechanism 3 and a right feeding mechanism 4, the left feeding mechanism 3 and the right feeding mechanism 4 are symmetrical to each other, the end face of the frame strip 13 is an inclined plane, and the two ends of the frame strip are respectively arranged on the left feeding mechanism 3 and the right feeding mechanism 4 for synchronous feeding. The structure of the left feeding mechanism is described in detail as follows:

[0028] As shown in Figure 3 、 4 , the left feeding mechanism 3 comprises a vertical left base plate, the front side of the left base plate is provided with a V-shaped feeding frame 15 for arranging the end of the frame strip, the right side of the rear side wall of the V-shaped feeding frame is provided with an inclined feeding belt 14, and the surface of the feeding belt is provided with convex ribs at equal intervals for feeding the frame strip. The V-shaped feeding frame 15 is a swingable movable frame, comprising a front side wall and a rear side wall at a V-shaped angle, the top of the front side wall of the V-shaped feeding frame is hinged to the left base plate through a hinge shaft 21, a tension spring 22 is arranged between the bottom of the rear side wall of the V-shaped feeding frame and the left base plate, and a limiting block corresponding to the top of the rear side wall of the V-shaped feeding frame is arranged on the left base plate. The V-shaped feeding frame can be adjusted by swinging, when the number of frame strips is large, the weight is large, the tension of the tension spring is overcome, the V-shaped feeding frame swings forward as a whole, at this time, the rear side wall of the V-shaped feeding frame forms a certain intersection angle with the feeding belt, the material at the lower part of the V-shaped feeding frame does not form contact with the feeding belt, the material at the upper part of the V-shaped feeding frame is first taken out by the feeding belt, with the reduction of the material in the V-shaped feeding frame, the V-shaped feeding frame swings backward as a whole under the action of the tension spring, the material at the bottom of the V-shaped feeding frame is in contact with the feeding belt and is taken out, so that the orderly feeding from top to bottom can be maintained.

[0029] A shaping mechanism 19 is arranged below the top rear side of the feeding belt, an upper feeding chain 16 is arranged at the rear side of the shaping mechanism 19, and L-shaped pawls 17 for carrying the frame strips are arranged on the upper feeding chain at equal intervals. Figure 5 、 6As shown, the top of the shaping mechanism 19 is a swing bracket 29, the top surface of which is set to be a slope surface consistent with the slope of the end surface of the frame strip 13, and the upward protrusion at the rear end of the swing bracket is a triangular stop block 31, the slope edge of which extends along the slope surface of the swing bracket; the bottom of the shaping mechanism is provided with a rotating push bar 23 pushed by an L-shaped push pawl, and a first gear 24 is arranged in linkage with the rotating push bar, the bottom of the swing bracket 29 is provided with a second gear, a sliding block 26 is arranged between the first gear 24 and the second gear, and the sliding block 26 is slidingly arranged on the left base plate, the sliding block is further provided with a reset spring 27 for downward resetting. The sliding block is downward provided with a first rack 25 engaged with the first gear, and the sliding block is upward provided with a second rack 28 engaged with the second gear; the front side or the rear side of the sliding block is further provided with a swing push rod 30, which swings upward and forms staggered pushing of the frame strip from front to back when the sliding block moves upward. The rear side of the swing bracket 30 is provided with an arc-shaped guide block 32, the upper side of which is provided with a guide slope surface, when the swing bracket swings to the lowest position, the rear end of the swing bracket is aligned with the front end of the arc-shaped guide block, and the bottom end of the arc-shaped guide block is provided with an L-shaped fixing frame 33, which is arranged outside the feeding chain 16.

[0030] As shown in Figure 4 , 5 , the rear side of the top end of the feeding belt is provided with a guide block 18, the front side surface of which is a front guide surface, the lower end of which is aligned with the swing bracket 29 of the shaping mechanism 19, the rear side surface of the guide block is a rear guide surface, which faces the feeding chain 16 and is parallel to the feeding chain 16, and the rear guide surface is a slope surface adapted to the slope of the end surface of the frame strip 13.

[0031] As shown in Figure 6 , the lower end of the feeding chain 16 is provided with a tension sprocket 22, and the two sides of the support of the tension sprocket 22 are respectively a tension screw 34 and a tension sliding rail 35.

[0032] The feeding belt sends the frame strip to the sizing mechanism, and as the feeding chain rotates, the L-shaped pawl pushes the rotating pusher, which drives the slider up through the meshing of the first gear and the first rack. The slider drives the swing push rod to swing to an inclined position through the meshing of the second rack and the second gear, and the swing push rod swings upward and pushes the frame strip from front to back. If the frame strip is inclined downward, it will naturally slide backward. If the frame strip is inclined upward, the triangular stopper will block the bottom edge of the frame strip. At this time, the swing push rod pushes the frame strip to flip to an inclined downward position and then slides downward. After passing through the sizing mechanism, the sliding posture of the frame strip is unified to slide downward with the inclined surface downward. Finally, the posture is unified and output with the angle of the L-shaped pawl. After the inclined surface of the frame strip slides along the arc-shaped upper surface of the arc-shaped guide block, the frame strip is in an inclined forward position and falls into the L-shaped fixed frame. The L-shaped pawl takes the frame strip away when passing through the inside of the L-shaped fixed frame and feeds along the feeding chain. When feeding, the L-shaped pawl adjusts the direction with the chain, the frame strip changes the direction by sticking to the L-shaped pawl, and finally outputs. In this example, the L-shaped pawl of the feeding chain receives the frame strip to the output frame strip, the L-shaped pawl rotates 180 degrees with the feeding chain, and the frame strip is output to the subsequent splicing process with the inclined surface backward.

Claims

1. A feeding device for automatically aligning frame bars, comprising a base, characterized in that: The base is provided with a left feeding mechanism and a right feeding mechanism, which are symmetrical to each other. The end face of the frame bar is inclined. The two ends of the frame bar are respectively mounted on the left feeding mechanism and the right feeding mechanism for synchronous feeding. The structure of the left feeding mechanism is as follows: The left feeding mechanism includes a vertical left base plate. A V-shaped feeding frame for mounting the end of the frame bar is provided on the front side of the left base plate. A feeding belt is inclinedly arranged on the right side of the rear side wall of the V-shaped feeding frame. A straightening mechanism is provided below the rear side of the top of the feeding belt. A feeding chain is provided on the rear side of the straightening mechanism. L-shaped claws for carrying the frame bar are arranged at equal intervals on the feeding chain. The left-side feeding mechanism's straightening structure is as follows: The top of the straightening mechanism is a swing bracket, with the top surface of the swing bracket facing right and set as an inclined plane with the same slope as the end face of the frame bar. A triangular stop block protrudes upward at the rear end of the swing bracket, and the inclined side of the triangular stop block extends along the inclined plane of the swing bracket. The bottom of the straightening mechanism is provided with a rotating bar that is actuated by an L-shaped claw. A first gear is set in conjunction with the rotating bar. A second gear is set at the bottom of the swing bracket. A slider is set between the first gear and the second gear. A first rack that meshes with the first gear is set downward on the slider, and a second rack that meshes with the second gear is set upward on the slider. A swing lever is also set on the front or rear side of the slider. When the slider moves upward, the swing lever swings upward and forms an alternating actuation of the frame bar with the swing bracket from front to back.

2. The automatic frame bar straightening feeding device according to claim 1, characterized in that: The movable frame of the V-shaped feed frame includes a front sidewall and a rear sidewall forming a V-shape. The top of the front sidewall of the V-shaped feed frame is hinged to the left base plate. A tension spring is provided between the bottom of the rear sidewall of the V-shaped feed frame and the left base plate. The left base plate is corresponding to the top of the rear sidewall of the V-shaped feed frame.

3. The automatic feeding device for aligning frame bars according to claim 1 or 2, characterized in that: The surface of the feed belt is provided with convex ribs at equal intervals to drive the frame bars to feed the material.

4. The automatic frame bar straightening feeding device according to claim 1, characterized in that: The swing bracket has an arc-shaped guide block on its rear side, and a guide slope on the upper side of the arc-shaped guide block. When the swing bracket swings to its lowest point, the rear end of the swing bracket is aligned with the front end of the arc-shaped guide block. An L-shaped fixing frame is provided at the bottom end of the arc-shaped guide block, and the L-shaped fixing frame is located on the outside of the feeding chain.

5. A feeding device for automatic frame bar straightening according to claim 1 or 4, characterized in that: The slider is slidably mounted on the left base plate, and the slider is also provided with a return spring for downward reset.

6. A feeding device for automatic frame bar straightening according to claim 1, 2, or 4, characterized in that: A guide block is provided on the rear side of the top of the feed belt. The front side of the guide block is the front guide surface, and the lower end of the front guide surface is aligned with the straightening mechanism. The rear side of the guide block is the rear guide surface, which faces the feeding chain and is parallel to the feeding chain. The rear guide surface is an inclined surface that matches the slope of the end face of the frame bar.

7. A feeding device for automatic frame bar straightening according to claim 1, 2, or 4, characterized in that: The base has fixed side plates on its left and right sides respectively. The left and right feeding mechanisms are set between the two fixed side plates with adjustable spacing. The left and right feeding mechanisms are equipped with adjusting screws, and the two ends of the adjusting screws are mounted on the fixed side plates. At least two adjusting slide rails for the left and right feeding mechanisms to slide are provided on the base and between the two fixed side plates.

8. The automatic frame bar straightening feeding device according to claim 7, characterized in that: The left and right feeding mechanisms are equipped with a first synchronous shaft that drives the feeding belt to rotate and a second synchronous shaft that drives the feeding chain to rotate. The two ends of the first and second synchronous shafts are respectively mounted on fixed side plates on both sides.

9. The automatic feeding device for aligning frame bars according to claim 8, characterized in that: The drive devices for the adjustable lead screw, the first synchronous rotating shaft, and the second synchronous rotating shaft are centrally located between the left loading mechanism and the right loading mechanism.

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