Bending machine

Abstract

The utility model relates to the technical field of door pocket line processing, in particular to a bending machine which comprises a machine base, a conveying mechanism used for conveying materials is arranged in the length direction of the machine base, a pressing wheel assembly used for pressing the materials is erected above the conveying mechanism, and at least one bending mechanism used for bending the materials is arranged on each of the two sides of the conveying mechanism. The bending mechanism comprises bending guide assemblies vertically arranged at the two ends of the conveying mechanism, a connecting rod arranged between the two bending guide assemblies and a bending power assembly for driving the connecting rod to move along the bending guide assemblies, and further comprises a turnover assembly linked with the connecting rod and used for inwards folding the bent part of the plate. The bending guide assembly is integrally in a one-third arc shape, the turnover assembly and the connecting rod are turned over by 90 degrees under the guiding effect of the bending guide assembly, and the bending device has the advantages of being compact and clear in structure and high in production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of door cover processing, in particular to a bending machine. Background Art

[0002] The door frame is a soft decorative line that wraps the wall. The invention patent with patent application number 202110448626.9 discloses a paint-free multi-layer solid wood bent door frame and its bending process. A film is pasted on the surface layer of the board, and the film covers the entire surface to protect the surface layer from being scratched during processing. Then the board with the film is transported to the machining platform, slotted by mechanical processing, and combined with the instructions attached Figure 1 It can be seen that the plate is processed into a wide-side bending portion, a narrow-side bending portion, a base and glue injection grooves on both sides of the base. The base material is fixedly connected to the base by glue, and then the liquefied EVA hot melt adhesive solvent is injected into the glue injection groove. After the hot melt adhesive is injected, the bending portion is immediately folded inward by a bending equipment, and the bending portion is bonded together by hot melt adhesive, and the hot melt adhesive fills the entire glue injection groove, and finally the finished door frame is obtained.

[0003] There are many types of bending equipment for producing door frames on the market, but their structures are complex and they cannot perform fast bending and forming operations well during use, resulting in low production efficiency. Therefore, we propose a bending machine. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a bending machine with compact and clear structure and high production efficiency in view of the deficiencies of the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bending machine, including a machine base, a transmission mechanism for conveying materials is provided in the length direction of the machine base, a pressure wheel assembly for pressing the materials is mounted above the transmission mechanism, and at least one bending mechanism for bending the materials is provided on both sides of the transmission mechanism, the bending mechanism includes a bending guide assembly erected at both ends of the transmission mechanism, a connecting rod arranged between the two bending guide assemblies, and a bending power assembly for driving the connecting rod to move along the bending guide assembly, the bending mechanism also includes a folding assembly linked with the connecting rod for folding the bending portion of the plate inwardly, the bending guide assembly is in the shape of one-third of a circular arc as a whole, and the folding assembly and the connecting rod are both guided by the bending guide assembly to achieve a 90° flip around the center of the circular arc of the bending guide assembly.

[0006] The utility model with the above-mentioned characteristics: the bending mechanism is arranged on both sides of the transmission mechanism, so that the material can be bent immediately after it is transported to the place, thereby improving the overall production efficiency; the pressure wheel assembly is used to press the material placed on the transmission mechanism, assisting the transmission mechanism to better transport the material, and also has a certain limiting effect on the material when bending; the bending guide assembly is arranged as a whole into a one-third arc shape, and with the cooperation of the bending power assembly and the connecting rod, the 90° flipping of the folding assembly is realized. The bending mechanism has a simple composition, clear division of labor in each group, and a simple work flow. Since two groups of folding assemblies are arranged, the bending parts on both sides of the plate can be folded inward at the same time, thereby improving production efficiency.

[0007] A further arrangement of the utility model is that the folding assembly includes a bending mounting plate linked to a connecting rod, a plurality of evenly distributed connecting plates are provided in the length direction of the bending mounting plate, a bending plate for supporting the bending portion of the plate is connected to the suspended end of the connecting plate, the bending plate is parallel to the bending mounting plate, and a bending auxiliary part capable of supporting the side of the bending portion of the plate is provided on the connecting plate.

[0008] The utility model with the above-mentioned characteristics: by arranging a connecting plate on the bending mounting plate, the bending plate and the transmission mechanism are infinitely close to each other, which is convenient for supporting the bending part of the plate, and under the connecting action of the connecting plate, the bending plate and the bending mounting plate are linked, and the bending plate can bend the bending part when it is flipped; the bending auxiliary part presses against the thickness surface of the bending part in the flat state when it is not flipped, and the bending auxiliary part always keeps pressing against the bending part during bending, which can ensure that the bending part realizes a 90° bend. If there is no bending auxiliary part, it cannot be ensured that the movement center of the bending mechanism coincides with the center of the bending guide assembly, resulting in an incomplete bending arc of the product, forming edges and corners, causing cracks on the surface of the product, and affecting the product quality. The bending auxiliary part is in a state of pressing against the side of the bending part when it is not flipped, which has a guiding effect on the material and prevents the material from being offset during the transmission process.

[0009] A further configuration of the utility model is that the bending auxiliary component includes a cylinder and a pressure component arranged at the output end of the cylinder, the pressure component includes a first connecting surface detachably connected to the output end of the cylinder, a second connecting surface abutting against the thickness surface of the bending portion of the plate, and a third connecting surface connecting the first connecting surface and the second connecting surface.

[0010] The utility model with the above characteristics adopts a combination of a cylinder and a pressure piece as a bending auxiliary piece. When the transmission mechanism is conveying materials, the bending auxiliary piece can be extended to press against the thickness surface of the substrate, which has a guiding effect on the conveying of the substrate and can prevent the substrate from shifting during conveyance.

[0011] A further configuration of the utility model is that the bending guide assembly includes a guide seat in an arc shape, a guide rack track in a one-third arc shape is provided on the guide seat, the guide rack track overlaps with the center of the guide seat, and a guide gear meshing with the guide rack track is provided at the end of the connecting rod.

[0012] The utility model with the above characteristics: the connecting rod and the guide seat are connected by gear meshing, so that the connecting rod can move along the guide seat under the drive of the bending power assembly to achieve a 90° flip of the connecting rod. The connection method between the connecting rod and the guide seat is simple and the transmission accuracy is high; the center of the circle where the guide rack track overlaps with the guide seat is the bending center, ensuring the overlap of the center of the circle and thus ensuring the bending accuracy.

[0013] A further configuration of the utility model is: a pulley track in the shape of one-third of a circular arc is provided on the outer side surface of the guide rack track, pulleys slidably connected thereto are provided on both sides of the pulley track, a pulley mounting plate is provided between the pulleys, the connecting rod is connected to the pulley mounting plate, and the folding assembly is linked to the connecting rod via the pulley mounting plate.

[0014] The utility model with the above characteristics: a pulley track is directly arranged on the guide rack track, the number of components is reduced, and the linkage structure of the folding assembly and the connecting rod is simplified; pulleys are arranged on both sides of the pulley track to improve the connection stability and sliding smoothness between the pulley mounting plate and the pulley track.

[0015] A further configuration of the utility model is: the bending power assembly includes a motor, a driving wheel sleeved on the output end of the motor, a passive wheel sleeved on the connecting rod, a synchronous belt wound between the driving wheel and the passive wheel, a motor mounting box is installed on the folding assembly, the output end of the motor, the driving wheel, the passive wheel and the synchronous belt are all located in the motor mounting box, and the motor end face and the motor mounting box are detachably connected by fasteners.

[0016] The utility model with the above-mentioned characteristics: a passive wheel linked to the driving wheel is sleeved on the connecting rod, so as to achieve the purpose of the motor driving the connecting rod to rotate. The bending power component has a simple structure and is easy to maintain; the motor is installed on the folding component by setting a motor mounting box. At the same time, since the connecting rod passes through the motor mounting box, the motor mounting box further strengthens the connection between the folding component and the connecting rod; the motor output end, the driving wheel, the driven wheel and the synchronous belt are all arranged in the motor mounting box, which can prevent dust and other impurities from affecting the normal operation of the bending power component and improve its service life.

[0017] A further arrangement of the utility model is that: the machine base is respectively provided with a position fine-adjustment component for adjusting the relative position of the bending mechanism on one side in the width direction and a position adjustment component for adjusting the relative position of the bending mechanism on the other side in the width direction; the bottom of the bending guide component is slidably connected to the machine base; the position fine-adjustment component includes a screw seat fixed on the machine base and a screw threadedly connected to the screw seat; the end of the screw is against the bending guide component; the position adjustment component includes a plurality of worm gear boxes; a transmission rod is connected between each of the worm gear boxes; each of the worm gear boxes is connected with a lead screw linked to the bending guide assembly; one side of one of the worm gear boxes is connected to an operating handle.

[0018] The utility model with the above characteristics: the main adjusting part of the position fine-tuning component is a screw, and its adjustment range is small; the main adjusting part of the position adjustment component is a lead screw, and its adjustment range is large; when the width of the substrate changes, the width and thickness of the wooden board base and the bending part also change accordingly, resulting in the bending center of the board being unable to coincide with the center of the circle of the bending guide component. For this reason, it is necessary to adjust the position of the bending guide component to calibrate the bending center. Refer to the appendix of the invention patent specification of 202110448626.9 Figure 2 It can be seen that the widths of the bending parts on both sides are inconsistent, one side is a narrow side and the other side is a wide side. The side of the substrate close to the narrow side is the reference plane, and its position needs to be kept unchanged. Therefore, when the thickness of the plate changes, the bending center of the narrow side only changes slightly, and the bending center can be calibrated by using a position fine-tuning component. The adjustment range of the bending center on the wide side is the superposition of the substrate width and the plate thickness. Therefore, a position adjustment component is needed on the wide side to calibrate the bending center.

[0019] A further configuration of the utility model is as follows: two support frames are provided at both ends of the machine base, a cross beam is provided between the two support frames, height adjustment components for driving the cross beam to move in the vertical direction are provided at both ends of the cross beam, a suspension beam is provided below the cross beam, a lateral position adjustment component capable of adjusting the positional relationship between the suspension beam and the transmission mechanism is provided between the suspension beams, the pressure wheel assembly is provided below the suspension beam, and the pressure wheel assembly includes a plurality of vertical plates evenly arranged along the length direction of the suspension beam and a pressure wheel arranged at the suspended end of the vertical plate.

[0020] The utility model with the above-mentioned characteristics: by arranging height adjustment components at both ends of the cross beam to adjust the height of the cross beam on the machine base, thereby changing the height of the pressure wheel assembly, and facilitating the adjustment of the height difference between the pressure wheel assembly and the transmission mechanism; by arranging a lateral position adjustment component, the position of the suspension beam in the width direction is adjusted, thereby changing the position of the pressure wheel assembly in the width direction, which is used to align the pressure wheel assembly with the transmission mechanism.

[0021] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0023] Figure 2 It is a schematic structural diagram of two bending mechanisms in an embodiment of the utility model.

[0024] Figure 3 It is a structural schematic diagram of a bending mechanism according to an embodiment of the utility model.

[0025] Figure 4 It is a schematic structural diagram of a bending guide assembly according to an embodiment of the utility model.

[0026] Figure 5 This is a schematic diagram of the structure of an embodiment of the utility model without the bending mechanism.

[0027] Figure 6 It is a structural schematic diagram of a bending auxiliary component according to an embodiment of the utility model.

[0028] Figure 7 This is a schematic diagram of the structure of the bending power assembly of an embodiment of the utility model without the motor mounting box.

[0029] Figure 8 It is a schematic diagram of the structure of the door frame when the door frame is unfolded according to the embodiment of the utility model.

[0030] Fig. 9 It is a schematic structural diagram of the finished door frame product of an embodiment of the utility model. DETAILED DESCRIPTION

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0032] like Figure 1-7 A bending machine shown in the figure includes a machine base 2, a transmission mechanism 3 for transmitting a plate is provided in the length direction of the machine base 2, a pressure wheel assembly 4 for pressing the plate is mounted above the transmission mechanism 3, and at least one bending mechanism 1 for bending the plate is provided on both sides of the transmission mechanism 3. The bending mechanism 1 includes a bending guide assembly 11 erected at both ends of the transmission mechanism 3, a connecting rod 12 arranged between the two bending guide assemblies 11, and a bending power assembly 13 for driving the connecting rod 12 to move along the bending guide assembly 11. The bending mechanism 1 also includes a folding assembly 14 that is linked with the connecting rod 12 and is used to fold the bent portion of the plate inward. The bending guide assembly 11 is generally in the shape of one-third of a circular arc, and the folding assembly 14 and the connecting rod 12 are both flipped 90° under the guidance of the bending guide assembly 11.

[0033] The folding assembly 14 includes a bending mounting plate 141 linked to the connecting rod 12, and a plurality of evenly distributed connecting plates 142 are provided in the length direction of the bending mounting plate 141, and a bending plate 143 for supporting the bending portion of the plate is connected to the suspended end of the connecting plate 142, and the bending plate 143 is parallel to the bending mounting plate 141, and a bending auxiliary member 144 capable of resisting the side of the bending portion of the plate is provided on the connecting plate 142, and the bending auxiliary member 144 includes a cylinder 1441 and a pressing member 1442 arranged at the output end of the cylinder 1441, and the pressing member 1442 includes a first connecting surface 14421 detachably connected to the output end of the cylinder 1441, a second connecting surface 14422 abutting against the thickness surface of the bending portion of the plate, and a third connecting surface 14423 connecting the first connecting surface 14421 and the second connecting surface 14422.

[0034] The bending guide assembly 11 includes an arc-shaped guide seat 111, on which a guide rack track 112 in the shape of one-third of an arc is provided. The guide rack track 112 overlaps with the center of the guide seat 111, and a guide gear 113 meshing with the guide rack track 112 is provided at the end of the connecting rod 12. A pulley track 1121 in the shape of one-third of an arc is provided on the outer surface of the guide rack track 112, and pulleys 114 slidably connected thereto are provided on both sides of the pulley track 1121, and a pulley mounting plate 115 is provided between the pulleys 114, and the connecting rod 12 is connected to the pulley mounting plate 115, and the folding assembly 14 is linked to the connecting rod 12 via the pulley mounting plate 115.

[0035] The bending power assembly 13 includes a motor 131, a driving wheel 132 mounted on the output end of the motor 131, a passive wheel 133 mounted on the connecting rod 12, a synchronous belt 134 wound between the driving wheel 132 and the passive wheel 133, and a motor mounting box 135 installed on the folding assembly 14. The output end of the motor 131, the driving wheel 132, the passive wheel 133 and the synchronous belt 134 are all located in the motor mounting box 135, and the end face of the motor 131 is detachably connected to the motor mounting box 135 by fasteners.

[0036] The machine base 2 is respectively provided with a position fine-adjustment component 5 for adjusting the relative position of the bending mechanism 1 on one side in the width direction, and a position adjustment component 6 for adjusting the relative position of the bending mechanism 1 on the other side in the width direction. The bottom of the bending guide component 11 is slidably connected to the machine base 2. The position fine-adjustment component 5 includes a screw seat 51 fixed on the machine base 2 and a screw 52 threadedly connected to the screw seat 51, and the end of the screw 52 is against the bending guide component 11. The position adjustment component 6 includes a plurality of worm gear boxes 61, and a transmission rod 62 is connected between each of the worm gear boxes 61. The worm gear boxes 61 are all connected with a lead screw (not shown in the figure) that is linked to the bending guide assembly 11, and one side of one of the worm gear boxes 61 is connected to an operating handle 63.

[0037] Two support frames 7 are provided at both ends of the machine base 2, a cross beam 8 is provided between the two support frames 7, height adjustment components 9 are provided at both ends of the cross beam 8 for driving it to move in the vertical direction, a suspension beam 10 is provided below the cross beam 8, a lateral position adjustment component 20 capable of adjusting the positional relationship between the suspension beam 10 and the transmission mechanism 3 is provided between the suspension beam 10 and the cross beam 8, a pressure wheel assembly 4 is provided below the suspension beam 10, and the pressure wheel assembly 4 includes a plurality of vertical plates 41 evenly arranged along the length direction of the suspension beam 10 and a pressure wheel 42 arranged at the suspended end of the vertical plate 41.

[0038] like Figure 8 The door frame in the unfolded state is shown in FIG. 1 , which is referred to as the material, wherein a is the base material, b is the plate material, b1 is the narrow side bending part, b2 is the base, and b3 is the wide side bending part. Fig. 9 The figure shows the door frame after bending. When the bending machine is used for production, the material needs to be placed on the transmission mechanism, and the pressure wheel assembly is pressed down on the base material. The narrow side bending part and the wide side bending part are respectively placed on the bending plates on both sides. In order to adapt the wide side bending part and the narrow side bending part, the bending plates need to be set as wide side bending plates and narrow side bending plates. When the material is transmitted, the bending auxiliary parts extend to be able to stick to the thickness surface of the base material, which plays a role in guiding the material transportation. After the material is transported to the right place, the motor in the bending power assembly Start, drive the connecting rod to rotate through the synchronous belt, and the guide gear rotates under the drive of the connecting rod and climbs up along the guide rack track. Since the guide rack track is in the shape of one-third of a circle, the bending plate linked with the connecting rod realizes a 90° flip, and the bending part placed on the bending plate is folded inward. When bending, the bending auxiliary parts retract until they are in contact with the thickness surface of the bending part. The symmetrically arranged bending auxiliary parts have a clamping effect on the plate. During the bending process, the bending auxiliary parts are always in contact with the plate to ensure that the bending is in place and the plate is obtained. Fig. 9 Door casing shown.

[0039] When bending, it is necessary to determine the bending center of the plate. The bending center needs to be adjusted according to the actual situation. Its approximate position is in the glue injection groove. The position fine-tuning component and the position adjustment component need to be adjusted to make the bending center of the plate overlap with the center of the guide seat. The position fine-tuning component moves the guide seat by turning the screw, thereby driving the bending plate to move. The position adjustment component transmits power through the worm gear box by turning the operating handle, and the lead screw drives the guide seat to move, thereby driving the bending plate to move. The main adjustment part of the position fine-tuning component is the screw, and its adjustment range is small. The main adjustment part of the position adjustment component is the lead screw, and its adjustment range is large. When the width of the substrate changes, the base of the wooden board , the width and thickness of the bending part also change accordingly, resulting in the inability of the bending center of the plate to coincide with the center of the circle of the bending guide assembly. For this reason, it is necessary to adjust the position of the bending guide assembly to calibrate the bending center. It is known that the two sides of the plate are the wide side bending part and the narrow side bending part, respectively. The side of the substrate close to the narrow side is the reference plane, and its position needs to be kept unchanged. Therefore, when the thickness of the plate changes, the bending center of the narrow side only changes slightly. Only the position fine-tuning assembly is needed to achieve the calibration of the bending center. The adjustment range of the bending center on the wide side is the superposition of the substrate width and the plate thickness. Therefore, a position adjustment assembly is needed on the wide side to calibrate the bending center.

[0040] In this embodiment, two bending mechanisms are simultaneously arranged on one side of the transmission mechanism. The two bending mechanisms arranged with the transmission mechanism as the symmetry axis constitute a bending station, that is, there are two bending stations in this embodiment, and the materials are arranged sequentially on the transmission mechanism. The bending station connected to the previous process is the first bending station, and the other is the second bending station. When the material enters the first bending station, the two bending stations perform bending work at the same time. After completion, the first bending station is reset and the second bending station remains in the bending state. This can shorten the waiting time for the next material to enter the bending station and improve production efficiency.

Claims

1. A bending machine, comprising a machine base, characterized in that: A transmission mechanism for conveying materials is provided in the length direction of the machine base, a pressure wheel assembly for pressing the materials is mounted above the transmission mechanism, and at least one bending mechanism for bending the materials is provided on both sides of the transmission mechanism, the bending mechanism includes a bending guide assembly erected at both ends of the transmission mechanism, a connecting rod arranged between the two bending guide assemblies, and a bending power assembly for driving the connecting rod to move along the bending guide assembly, the bending mechanism also includes a folding assembly linked with the connecting rod for folding the bending portion of the plate inward, the bending guide assembly is in the shape of one-third of a circular arc as a whole, and the folding assembly and the connecting rod both realize a 90° flip around the center of the circular arc of the bending guide assembly under the guiding action of the bending guide assembly.

2. A bending machine according to claim 1, characterized in that: The folding assembly includes a bending mounting plate linked to a connecting rod, a plurality of evenly distributed connecting plates are provided in the length direction of the bending mounting plate, a bending plate for supporting the bending portion of the plate is connected to the suspended end of the connecting plate, the bending plate is parallel to the bending mounting plate, and a bending auxiliary part capable of supporting the side of the bending portion of the plate is provided on the connecting plate.

3. A bending machine according to claim 2, characterized in that: The bending auxiliary part includes a cylinder and a pressure part arranged at the output end of the cylinder. The pressure part includes a first connecting surface detachably connected to the output end of the cylinder, a second connecting surface abutting against the thickness surface of the bending part of the plate, and a third connecting surface connecting the first connecting surface and the second connecting surface.

4. A bending machine according to any one of claims 1 to 3, characterized in that: The bending guide assembly includes an arc-shaped guide seat, on which a guide rack track in the shape of one-third of an arc is provided. The guide rack track overlaps with the center of the guide seat, and the end of the connecting rod is provided with a guide gear meshing with the guide rack track.

5. A bending machine according to claim 4, characterized in that: A pulley track in the shape of one-third of a circular arc is provided on the outer side surface of the guide rack track, pulleys slidably connected thereto are provided on both sides of the pulley track, a pulley mounting plate is provided between the pulleys, the connecting rod is connected to the pulley mounting plate, and the folding assembly is linked to the connecting rod via the pulley mounting plate.

6. A bending machine according to any one of claims 1 to 3, characterized in that: The bending power assembly includes a motor, a driving wheel sleeved on the output end of the motor, a passive wheel sleeved on the connecting rod, a synchronous belt wound between the driving wheel and the passive wheel, a motor mounting box installed on the folding assembly, the output end of the motor, the driving wheel, the passive wheel and the synchronous belt are all located in the motor mounting box, and the motor end face is detachably connected to the motor mounting box by fasteners.

7. A bending machine according to any one of claims 1 to 3, characterized in that: The machine base is respectively provided with a position fine-adjustment component for adjusting the relative position of the bending mechanism on one side in the width direction and a position adjustment component for adjusting the relative position of the bending mechanism on the other side in the width direction. The bottom of the bending guide component is slidably connected to the machine base. The position fine-adjustment component includes a screw seat fixed on the machine base and a screw threadedly connected to the screw seat, and the end of the screw is against the bending guide assembly. The position adjustment assembly includes two worm gear boxes, a transmission rod is connected between the worm gear boxes, and each of the worm gear boxes is connected to a lead screw that is linked to the bending guide assembly, and one side of one of the worm gear boxes is connected to an operating handle.

8. A bending machine according to any one of claims 1 to 3, characterized in that: Two support frames are provided at both ends of the machine base, a cross beam is provided between the two support frames, height adjustment components for driving the cross beam to move in the vertical direction are provided at both ends of the cross beam, a suspension beam is provided below the cross beam, a lateral position adjustment component capable of adjusting the positional relationship between the suspension beam and the transmission mechanism is provided between the suspension beams, and the pressure wheel assembly is arranged below the suspension beam, and the pressure wheel assembly includes a plurality of vertical plates evenly arranged along the length direction of the suspension beam and a pressure wheel arranged at the suspended end of the vertical plate.

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