A device for tightening elastic fabric of a lying bed

Abstract

The elastic cloth tensioning device for a lying bed and the control method thereof disclosed in the present invention comprise a frame and a conveyor belt arranged on the top surface of the frame, the side of the frame is provided with a first hydraulic cylinder and a first push rod vertically fixed to the output shaft of the first hydraulic cylinder; the frame is provided with a width changing mechanism on the opposite side of the first hydraulic cylinder, the width changing mechanism is provided with a push plate and a push plate pushing mechanism, the push plate pushing mechanism drives the push plate to sweep over the conveyor belt and retract, and as the trampoline becomes wider, the push plate is smoothly placed forward and placed on the conveyor belt in front, allowing the trampoline to continue to be transported forward, thereby ensuring that the width of the trampoline is consistent, and does not affect the efficiency of the conveyor belt driving the trampoline to transport forward, thereby increasing the product yield and production efficiency.

Description

Technical Field

[0001] The invention relates to a trampoline production tool, in particular to a device for tightening elastic fabric of a trampoline. Background Art

[0002] When producing a trampoline, the cross-width of the support rods at the bottom of the elastic cloth needs to be adjusted. When the elastic cloth is fixed to the trampoline through the fixing strips, the cross-width of the support rods is increased to tighten the elastic cloth. In the existing production technology, the support rods are straightened by manpower or other tools, which will result in inconsistent curvature of the support rods and a high defect rate. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a device for tightening elastic fabric by pulling a support rod horizontally.

[0004] The objectives of the present invention are achieved through the following technical solutions: a device for tightening the elastic fabric of a lying bed comprises a frame and a conveyor belt arranged on the top surface of the frame, a first hydraulic cylinder and a first push rod vertically fixed to the output shaft of the first hydraulic cylinder are provided on the side of the frame; the frame is provided with a width changing mechanism on the opposite side of the first hydraulic cylinder, the width changing mechanism is provided with a push plate and a push plate pushing mechanism, the push plate pushing mechanism drives the push plate to sweep over the conveyor belt and retract.

[0005] As a preferred embodiment, the frame is further provided with a second hydraulic cylinder on the same side as the first hydraulic cylinder, and the output shaft of the second hydraulic cylinder is fixedly connected to the second push rod.

[0006] As a preferred embodiment, the push plate pushing mechanism includes a linear cylinder, a T-shaped frame fixedly connected to the output shaft of the linear cylinder in the middle, and two sets of connecting structures hinged to the two ends of the T-shaped frame. The connecting structure includes a first swing rod, a first rotating shaft, a second swing rod and a second rotating shaft connected in sequence. The first rotating shaft is rotatably connected under the П-shaped plate, the second rotating shaft is rotatably connected in the channel steel, the second swing rod and the second rotating shaft are hinged, and the channel steel is fixedly connected to the push plate.

[0007] In the above solution, the second swing arm and the first swing arm are arranged in parallel up and down, and the first rotating shaft and the second rotating shaft are respectively arranged at two ends of the second swing arm.

[0008] As a preferred embodiment, according to the inward conveying direction of the conveyor belt, a folding wing is fixed to the rear end of the push plate, and the folding wing is folded toward the outside of the frame.

[0009] As a preferred embodiment, the conveyor belt includes several rollers arranged side by side and a motor for driving the rollers to rotate.

[0010] A control method for a stretch fabric tensioning device for a reclining bed comprises the following steps:

[0011] Step 1: First, install the elastic fabric on the fixing strip and fix it on the bed, then put the bed on the conveyor belt;

[0012] Step 2: When the bed is close to the starting end of the conveyor belt, the push plate pushing mechanism drives the push plate to protrude above the conveyor belt;

[0013] Step 3: The linear cylinder in the push plate pushing mechanism is actuated, the T-shaped frame is forced to swing, the first swinging rod in the two connecting structures swings, the first swinging rod drives the first rotating shaft to swing, the first rotating shaft drives the second swinging rod to swing, the second swinging rod drives the second rotating shaft hinged thereto to swing, the second rotating shaft drives the channel steel to swing in an arc, and the channel steel drives the push plate to sweep over the conveyor belt;

[0014] Step 4: The edge of the bed is hooked by the first push rod and the push plate, and the trampoline is stuck between the push plate and the first push rod. The first hydraulic cylinder drives the first push rod to pull the trampoline to the side, and the width of the bed is widened;

[0015] Step 5: The linear cylinder moves again, and the first swing arm, the first rotating shaft, the second swing arm, the second rotating shaft and the push plate swing. At this time, the push plate swings backward and forward, and retracts as the bed gradually widens. When the push plate is close to the edge of the frame, the bed becomes the widest, the elastic fabric is tightened, and the bed continues to be transported forward along the conveyor belt.

[0016] The present invention has the following advantages and effects compared to the prior art:

[0017] 1. The first hydraulic cylinder drives the first push rod to retract. Combined with the push plate and the push plate pushing mechanism in the width changing mechanism, when the first push rod widens the trampoline, the push plate always provides the trampoline with a hanging edge. During the movement of the push plate back and forward, as the trampoline becomes wider, it is smoothly moved forward and placed on the conveyor belt in front, allowing the trampoline to continue to be transported forward, thereby ensuring the width of the trampoline is consistent, and does not affect the efficiency of the conveyor belt driving the trampoline forward, thereby increasing the product yield and production efficiency.

[0018] 2. According to the direction of the conveyor belt, the push plate is fixed with a folding wing, and the folding wing is folded to the outside of the frame. During the swinging of the push plate, the folding wing smoothly moves the trampoline forward and onto the conveyor belt along the conveying direction of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of a stretch fabric tensioning device for a reclining bed.

[0020] Figure 2 It is a front view of the stretch fabric tensioning device for a lying bed.

[0021] Figure 3 It is a structural diagram of the width changing mechanism. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0023] Reference Figure 1 and Figure 2 The elastic fabric tensioning device for the lying bed includes a frame 1 and a conveyor belt 2 arranged on the top surface of the frame 1. The side of the frame 1 is provided with a first hydraulic cylinder 3 and a horizontal first push rod 4 fixed vertically to the output shaft of the first hydraulic cylinder 3; the frame 1 is provided with a width changing mechanism on the opposite side of the first hydraulic cylinder 3, and the width changing mechanism is provided with a push plate 5 and a push plate pushing mechanism. The push plate pushing mechanism drives the push plate 5 to sweep over the conveyor belt 2 and retract it. Its purpose is that in the process of the first push rod 4 widening the trampoline, the push plate 5 always provides the trampoline with a hanging edge, and as the trampoline becomes wider, it is smoothly moved forward and placed on the conveyor belt in front, allowing the trampoline to continue to be transported forward. The working principle of the whole device is: first, when the elastic cloth is installed on the fixing strip and fixed on the bed (not shown in the drawing), the bed is placed on the conveyor belt 2. When the bed is close to the starting end of the conveyor belt 2, the width changing mechanism drives the push plate 5 to protrude above the conveyor belt 2. The edge of the bed is hooked by the first push rod 4 and the push plate 5. The trampoline is stuck between the push plate 5 and the first push rod 4. The first hydraulic cylinder 3 drives the first push rod 4 to pull the trampoline to the side, and the width of the bed becomes wider. At this time, the push plate 5 will retract as the bed gradually widens. When the push plate 5 is close to the edge of the frame, the bed becomes the widest, the elastic cloth is tightened, and the bed continues to be transported forward along the conveyor belt.

[0024] Since the width of the trampoline adjusted by the first hydraulic cylinder 3 and the width changing mechanism is consistent, in order to be able to adjust the width of the bed to more sizes, the frame 1 is further provided with a second hydraulic cylinder 6 on the same side of the first hydraulic cylinder 3. The output shaft of the second hydraulic cylinder 6 is fixedly connected to the second horizontal push rod 7. The second hydraulic cylinder 6 pushes the second horizontal push rod 7 to narrow the width of the trampoline to meet different requirements.

[0025] Reference Figure 3The push plate pushing mechanism includes a linear cylinder 8, a T-shaped frame 10 fixedly connected to the output shaft of the linear cylinder 8 in the middle, and two sets of connecting structures 9 hinged to the two ends of the T-shaped frame 10. The connecting structure 9 includes a first swing rod 901, a first rotating shaft 902, a second swing rod 903 and a second rotating shaft 904 connected in sequence. The first rotating shaft 902 is rotatably connected under the П-shaped plate, and the second rotating shaft 904 is rotatably connected in the channel steel 11. The second swing rod 903 and the second rotating shaft 904 are hinged, and the channel steel 11 is fixedly connected to the push plate 5. The linear cylinder 8 is in motion, the T-shaped frame 10 is forced to swing, the first swing rod 901 in the two sets of connecting structures 9 swings, the first swing rod 901 drives the first rotating shaft 902 to swing, the first rotating shaft 902 drives the second swing rod 903 to swing, the second swing rod 903 drives the second rotating shaft 904 to swing, the second rotating shaft 904 drives the channel steel 11 to swing in an arc, and the channel steel 11 drives the push plate 5 to sweep over the conveyor belt 2 and retract.

[0026] In this embodiment, the second swinging rod 903 and the first swinging rod 901 are arranged in parallel up and down, and the first rotating shaft 902 and the second rotating shaft 904 are respectively arranged at two ends of the second swinging rod 903 .

[0027] Preferably, according to the inward conveying direction of the conveyor belt 2, a folding wing 12 is fixed to the rear end of the push plate 5, and the folding wing 12 is folded toward the outside of the frame 1. During the swinging of the push plate 5, the folding wing 12 smoothly moves the trampoline forward and onto the conveyor belt 2 along the conveying direction of the conveyor belt 2.

[0028] Preferably, the conveyor belt 2 includes a plurality of rollers 201 arranged side by side and a motor 202 for driving the rollers 201 to rotate.

[0029] The control method of the above-mentioned bed elastic cloth tensioning device includes the following steps: its purpose is to widen the trampoline, tighten the elastic cloth, and in the process of the bed widening, the push plate 5 will move toward the first hydraulic cylinder 3 as the trampoline widens. When the push plate 5 is retracted, the trampoline will continue to move forward.

[0030] Step 1: First, install the elastic fabric on the fixing strip and fix it on the bed, then put the bed on the conveyor belt;

[0031] Step 2: When the bed is close to the starting end of the conveyor belt 2, the push plate pushing mechanism drives the push plate 5 to protrude above the conveyor belt;

[0032] Step 3: The linear cylinder 8 in the push plate pushing mechanism is actuated, and the T-shaped frame 9 is forced to swing. The first swinging rod 901 in the two connecting structures swings, and the first swinging rod 901 drives the first rotating shaft 902 to swing. The first rotating shaft 902 drives the second swinging rod 903 to swing. The second swinging rod 903 drives the second rotating shaft 904 hinged thereto to swing. The second rotating shaft 904 drives the channel steel 11 to swing in an arc, and the channel steel 11 drives the push plate 5 to sweep over the conveyor belt 2.

[0033] Step 4: The edge of the bed is hooked by the first push rod 4 and the push plate 5, and the trampoline is stuck between the push plate 5 and the first push rod 4. The first hydraulic cylinder 3 drives the first push rod 4 to pull the trampoline to the side, and the width of the bed becomes wider;

[0034] In step 5, the linear cylinder 8 moves again, and the first swing arm 901, the first rotating shaft 902, the second swing arm 903, the second rotating shaft 904 and the push plate 5 swing. At this time, the push plate 5 swings backward and forward, and retracts as the bed gradually widens. When the push plate 5 is close to the edge of the frame 1, the bed becomes the widest, the elastic fabric is tightened, and the bed continues to be transported forward along the conveyor belt 2.

[0035] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A device for tightening elastic fabric of a bed, characterized in that: The invention comprises a frame and a conveyor belt arranged on the top surface of the frame, a first hydraulic cylinder and a first push rod fixed vertically to the output shaft of the first hydraulic cylinder are arranged on the side of the frame; a width changing mechanism is arranged on the opposite side of the first hydraulic cylinder, the width changing mechanism is provided with a push plate and a push plate pushing mechanism, the push plate pushing mechanism drives the push plate to sweep over the conveyor belt and retract; a second hydraulic cylinder is also arranged on the same side of the frame as the first hydraulic cylinder, the output shaft of the second hydraulic cylinder is fixedly connected to the second push rod; the push plate pushing mechanism comprises a linear cylinder, a T-shaped frame fixedly connected to the output shaft of the linear cylinder in the middle, and two sets of connecting structures hinged to the two ends of the T-shaped frame, the connecting structure comprises a first swinging rod, a first rotating shaft, a second swinging rod and a second rotating shaft connected in sequence, the first rotating shaft is rotatably connected under the П-shaped plate, the second rotating shaft is rotatably connected in the channel steel, the second swinging rod and the second rotating shaft are hinged, and the channel steel is fixedly connected to the push plate; according to the inward transmission direction of the conveyor belt, a folding wing is fixed at the rear end of the push plate, and the folding wing is folded to the outside of the frame.

2. The elastic fabric tensioning device for a lying bed according to claim 1, characterized in that: The second swinging rod and the first swinging rod are arranged in parallel up and down, and the first rotating shaft and the second rotating shaft are respectively arranged at two ends of the second swinging rod.

3. The elastic fabric tightening device for a lying bed according to claim 1, characterized in that: The conveyor belt comprises a plurality of rollers arranged side by side and a motor for driving the rollers to rotate.

4. A control method for the elastic fabric tensioning device for a lying bed according to claim 1, characterized in that: It includes the following steps: Step 1: First, install the elastic fabric on the fixing strip and fix it on the bed, then put the bed on the conveyor belt; Step 2: When the bed is close to the starting end of the conveyor belt, the push plate pushing mechanism drives the push plate to protrude above the conveyor belt; Step 3: The linear cylinder in the push plate pushing mechanism moves, the T-shaped frame swings under force, the first swing rod in the two sets of connecting structures swings, the first swing rod drives the first rotating shaft to swing, the first rotating shaft drives the second swing rod to swing, the second swing rod drives the second rotating shaft hinged therewith to swing, the second rotating shaft drives the groove steel to swing in an arc, and the groove steel drives the push plate to sweep over the conveyor belt; Step 4: The edge of the bed is hooked by the first push rod and the push plate, the bed is stuck between the push plate and the first push rod, and the first hydraulic cylinder drives the first push rod to pull the bed to the side, so that the width of the bed becomes wider; Step 5, the linear cylinder moves again, the first swing arm, the first rotating shaft, the second swing arm, the second rotating shaft and the push plate swing, and the push plate swings backward and forward at this time, and retracts as the bed gradually widens. When the push plate is close to the edge of the frame, the bed becomes the widest, the elastic fabric is tightened, and the bed continues to be transported forward along the conveyor belt.

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