Aligning and feeding device for lead screw packaging

Abstract

The invention discloses an aligning and feeding device for lead screw packaging, and relates to the technical field of lead screw feeding equipment.The aligning and feeding device comprises a first rack, a chain rod conveying mechanism, an anti-blocking mechanism, an excitation mechanism and an aligning and guiding piece, the chain rod conveying mechanism comprises a chain, a first driving device and round rods, and a clamping groove can be formed between every two adjacent round rods; the anti-blocking mechanism comprises a material stirring rotating shaft, a material stirring piece and an elastic piece. Vibration is provided for the round rod through the excitation mechanism, in the process that the chain rod conveying mechanism conveys the lead screws, the lead screws stacked together can be separated due to vibration and gravity, the lead screws not located in the clamping grooves can obliquely roll down on the round rod, and the lead screws located in the clamping grooves can be supported by the round rod and cannot roll down. Therefore, the function of separating a plurality of stacked lead screws into single lead screws is realized; the single lead screws are aligned through the alignment guide piece, and automatic alignment of the lead screws is achieved. The anti-blocking mechanism is arranged to prevent the lead screw not located in the clamping groove from passing through, and the lead screw is prevented from being blocked in the alignment channel.

Description

Technical Field

[0001] The invention relates to the technical field of screw rod feeding equipment, in particular to an alignment feeding device for screw rod packaging. Background Art

[0002] For long lead screws with a length of about two meters and a diameter of about 1-2 centimeters, the traditional packaging method mainly relies on manual operation: first, the staff needs to manually count a preset number of long lead screws from the messy pile of long lead screw materials, then stand up and align the counted number of long lead screws, and finally transfer the long lead screws to the packaging equipment for packaging.

[0003] Since the filament rods themselves have threads, when they fit together, the threads are very likely to bite and entangle with each other. In order to align the ends of multiple filament rods, it is necessary to manually stand up multiple filament rods and lift them to a certain height for alignment. The operation is labor-intensive and the manual operation speed is relatively slow, resulting in low production efficiency, which makes it difficult to meet the needs of large-scale industrial production for efficient and fast packaging. Summary of the invention

[0004] Based on this, it is necessary to provide an alignment and feeding device for screw rod packaging that can realize automatic counting and alignment of screw rods in order to solve the above-mentioned technical problems.

[0005] In order to achieve the above object, the present invention provides an alignment and feeding device for screw rod packaging, comprising: First rack; The chain rod conveying mechanism is arranged on the first frame, and comprises a chain, a first driving device for driving the chain to perform a rotary motion, and a plurality of round rods mounted on the chain; wherein the height of the feeding end of the chain rod conveying mechanism is lower than the height of the unloading end thereof, and a slot for accommodating a single screw rod can be formed between two adjacent round rods; The anti-blocking mechanism is arranged on the first frame, and includes a material-digging shaft, a material-digging member, and an elastic member. The material-digging shaft is rotatably connected to the first frame, the material-digging member is installed on the material-digging shaft, the elastic member is used to provide elastic force to the material-digging shaft to make it at an interception angle, and the material-digging member is used to limit the passage of the screw rod that is not completely in the slot; The excitation mechanism includes an excitation source for providing vibration to the round rod; The alignment guide is arranged on the first frame, located between the anti-blocking mechanism and the unloading end of the chain rod conveying mechanism, and is used for contacting and cooperating with the end of the screw rod in the slot to align the end of the screw rod.

[0006] Preferably, the chain conveying mechanism also includes a driving shaft, a driven shaft, a driving sprocket, a driven sprocket, and a chain. The driving shaft and the driven shaft are respectively rotatably connected to the first frame. The first drive device is installed on the first frame, and the first drive device is transmission-connected to the driving shaft. A driving sprocket is installed on the driving shaft, and a driven sprocket is installed on the driven shaft. The driving sprocket and the driven sprocket are connected by a chain transmission.

[0007] Preferably, the anti-blocking mechanism also includes a mounting bracket, a sensing member, a tensioning member, a detection sensor, and a limit member. The mounting bracket is fixedly mounted on the first frame, the material tapping shaft is rotatably mounted on the mounting bracket, the detection sensor and the limit member are fixedly mounted on the mounting bracket, the sensing member and the tensioning member are fixedly mounted on the material tapping shaft, both ends of the elastic member are respectively connected to the mounting bracket and the tensioning member, and the elastic member is used to provide an elastic force to the material tapping shaft to place it at an interception angle; when the material tapping shaft is at the interception angle, the tensioning member abuts against the limit member; the detection sensor and the sensing member are cooperatively arranged to detect whether the material tapping shaft is rotated from the interception angle to the blocking angle.

[0008] Preferably, the anti-blocking mechanism further comprises an alarm, and when the material-discharging shaft is at a material-blocking angle, the alarm sounds an alarm.

[0009] Preferably, the vibration excitation mechanism further includes a vibration plate and a first shock absorbing device, the vibration plate is connected to the first frame via the first shock absorbing device, the vibration source is mounted on the vibration plate, and the vibration plate is in contact with the round rod.

[0010] Preferably, it also includes a linear vibrating feeder, which includes a silo for accommodating a plurality of screw rods, the width of the silo is greater than the length of the screw rods, and the linear vibrating feeder is used to convey the screw rods to the chain rod conveying mechanism.

[0011] Preferably, the silo includes a guide plate located at its unloading end, the lower end of the guide plate extends to the loading end of the chain rod conveying mechanism, and the guide plate is used to block the screw rod on the round rod from passing downward.

[0012] Preferably, it further comprises a second frame, and the first frame is mounted on the second frame via a second shock absorbing device.

[0013] Preferably, it also includes a counting mechanism, which includes a counting plate, a micro switch and a limit bar. The counting plate and the limit bar are fixedly mounted on the first frame, the counting plate is located at the unloading end of the chain conveying mechanism, the micro switch is installed at the bottom end of the counting plate, and an opening is opened on the counting plate. The detection end of the micro switch extends out of the opening and can contact and cooperate with the lead screw output by the chain conveying mechanism. The limit bar is located on the outer periphery of the round rod at the unloading end of the chain conveying mechanism, and is used to limit the lead screw from disengaging from the slot so that the lead screw transported by the chain conveying mechanism falls at the preset position of the counting plate.

[0014] Preferably, it also includes a temporary storage mechanism, which includes a material dividing shaft, a material dividing rod, and a second driving device. The material dividing shaft is rotatably connected to the second frame, and the material dividing rod is fixedly installed on the material dividing shaft. The material dividing rod can form at least three V-shaped limit spaces that are evenly distributed in the circumference, and the V-shaped limit spaces are used to collect the screw rod output by the counting plate; the second driving device is fixedly connected to the second frame, and the output end of the second driving device is transmission-connected to the material dividing shaft. The second driving device drives the material dividing shaft to intermittently rotate at a preset angle, so that one of the V-shaped limit spaces is located at the material receiving station and receives the screw rod output by the counting plate, and one of the V-shaped limit spaces is located at the material unloading station and discharges the screw rod under the action of gravity.

[0015] Compared with the prior art, this technical solution has at least one of the following beneficial effects: The excitation source provides vibration to the round rod. During the process of conveying the screw rods by the chain rod conveying mechanism, the stacked screw rods will be separated by vibration and gravity. The screw rods not in the slots will tilt and roll down on the round rods, while the screw rods in the slots can be supported by the round rods and will not roll down, thereby realizing the function of separating multiple stacked screw rods into single screw rods. By aligning the single screw in the slot through the alignment guide, the situation where the ends of multiple screws are inconvenient to align due to the mutual thread engagement of multiple screws will not occur, and the automatic alignment of the screws can be realized, which reduces the burden of manpower and improves production efficiency; By providing an anti-blocking mechanism, the material-moving member contacts the screw rod that is not in the slot and blocks the screw rod from continuing to be transported upward, thereby preventing two or more screw rods from entering the alignment channel formed by the alignment guide member while interlocking with each other, and preventing the screw rods from being stuck in the alignment channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an alignment and feeding device for screw rod packaging according to an embodiment of the present invention Figure 1 ; Figure 2 A three-dimensional diagram of an alignment and feeding device for screw rod packaging according to an embodiment of the present invention Figure 2 ; Figure 3 A three-dimensional diagram of an alignment and feeding device for screw rod packaging according to an embodiment of the present invention Figure 2 ; Figure 4 for Figure 2 A partial enlarged view of point B in the middle; Figure 5 for Figure 2 A partial enlarged view of point C in the middle; Figure 6 A top view of an alignment and feeding device for screw rod packaging according to an embodiment of the present invention; Figure 7 for Figure 6 Sectional view along line AA; Figure 8 for Figure 7 A partial enlarged view of point D in the middle; Fig. 9 for Figure 7 A partial enlarged view of point E in the middle; In the figure, 1, first frame; 2, chain rod conveying mechanism; 21, chain; 22, first driving device; 23, round rod; 231, slot; 24, driving shaft; 25, driven shaft; 26, driving sprocket; 27, driven sprocket; 3, anti-blocking mechanism; 31, material shifting shaft; 32, material shifting member; 33, elastic member; 34, mounting bracket; 35, induction member; 36, tension member; 37, detection sensor; 38, limit member; 3 9. Alarm; 4. Vibration mechanism; 41. Vibration source; 42. Vibration plate; 43. First shock-absorbing device; 5. Alignment guide; 6. Linear vibrating feeder; 61. Material bin; 62. Material guide plate; 63. Side plate guard strip; 7. Second frame; 71. Second shock-absorbing device; 8. Counting mechanism; 81. Counting plate; 82. Micro switch; 83. Limit strip; 9. Temporary storage mechanism; 91. Material distribution shaft; 92. Material distribution rod; 921. V-shaped limit space; 93. Second drive device; 94. Positioning detection mechanism; 941. Angle positioning plate; 942. Proximity switch. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0018] See also Figures 1 to 9 An embodiment of the present application provides an alignment and feeding device for screw rod packaging, comprising: a first frame 1, a chain rod conveying mechanism 2, an anti-blocking mechanism 3, an exciting mechanism 4, and an alignment guide 5.

[0019] The chain conveyor mechanism 2 is arranged on the first frame 1, and includes a chain 21, a first driving device 22 for driving the chain 21 to perform a rotary motion, and a plurality of round rods 23 installed on the chain 21; wherein the chain 21 is arranged obliquely, and the height of the loading end of the chain conveyor mechanism 2 is lower than the height of the unloading end thereof, such as Figure 8 As shown, a slot 231 for accommodating a single screw rod can be formed between two adjacent round rods 23; the round rod 23 is a hollow rod, which can reduce the overall weight; like Figures 1 to 4As shown, the anti-blocking mechanism 3 is arranged on the first frame 1, and includes a material-digging shaft 31, a material-digging member 32, and an elastic member 33. The material-digging shaft 31 is rotatably connected to the first frame 1, and the material-digging member 32 is installed on the material-digging shaft 31. The elastic member 33 is used to provide elastic force to the material-digging shaft 31 to make it at an interception angle, and the material-digging member 32 is used to limit the passage of the screw rod that is not completely in the slot 231; the slot 231 can completely accommodate one screw rod, and two or more screw rods will not be completely in the slot 231. When the slot 231 has already accommodated one screw rod, the excess screw rod will extend out of the slot 231, and the part of the screw rod extending out of the slot 231 will contact the material-digging member 32. The material-digging member 32 intercepts the screw rod and only allows the screw rod that is completely in the slot 231 to pass, thereby realizing the function of controlling the single passage of the screw rod, which is convenient for aligning and counting the subsequent screw rods.

[0020] The material shifting shaft 31 is located above the chain rod conveying mechanism 2, and the material shifting piece 32 is in a C-shaped structure. Specifically, it is fixed on the material shifting shaft 31 by bolts and is detachable. The material shifting piece 32 of an appropriate size can be replaced according to screw rods of different diameters.

[0021] like Figure 7 As shown, the excitation mechanism 4 includes an excitation source 41 for providing vibration to the round rod 23; in this embodiment, the excitation source 41 is a vibration motor, and in other embodiments, an electromagnetic vibrator, a hydraulic vibrator or a mechanical eccentric vibrator can also be used; the first drive device 22 is a worm gear reduction motor or other motor with a self-locking function; since the screw rod is long and has its own threads, the stacked screw rods will engage with each other through the threads, and during the process of the chain rod conveying mechanism 2 conveying the screw rod obliquely upward, the excitation source 41 provides vibration to the round rod 23, so that the round rod 23 drives the screw rod to vibrate, and the stacked screw rods will be separated by the vibration and roll down obliquely on the round rod 23 due to gravity. Since a slot 231 for accommodating a single screw rod can be formed between two adjacent round rods 23, when the single screw rod is located in the slot 231, the round rod 23 can provide support for the screw rod to prevent it from rolling down due to vibration, thereby realizing the function of separating multiple stacked screw rods into a single screw rod.

[0022] like Figure 2 , Figure 3 and Figure 6 As shown, the alignment guide 5 is arranged on the first frame 1, between the anti-blocking mechanism 3 and the unloading end of the chain rod conveying mechanism 2, and is used to contact and cooperate with the end of the screw rod in the slot 231 to align the end of the screw rod. The alignment guide 5 is symmetrically arranged in two, and an alignment channel with a bell-mouth structure is formed between the two alignment guides 5 for the screw rod to pass through.

[0023] The length of the round rod 23 is smaller than that of the screw rod, so that the screw rod in the slot 231 can be in contact with the alignment guide 5 .

[0024] The width of the narrowest part of the alignment channel is slightly larger than the length of the screw rod, and can be specifically set to be 1-10mm larger than the length of the screw rod. On the one hand, the smaller the value, the better the screw rod alignment effect, but it is easy for the screw rod to be stuck in the alignment channel due to the length of some screw rods being slightly longer than the standard length; on the other hand, the larger the value, the easier it is for the screw rod to pass through the alignment channel, and it is not easy for the screw rod with a length slightly longer than the standard length to be stuck in the alignment channel, but the screw rod alignment effect is worse, resulting in more packaging bags during packaging and a large amount of space occupied during transportation.

[0025] When the chain rod conveying mechanism 2 conveys the screw rod into the alignment channel, Figure 6 As shown, since the entrance of the alignment channel is a gradually narrowing bell-mouth structure, the screw rod that is not in the preset axial position will contact the alignment guide 5. Under the guidance of the bell-mouth structure and the limiting effect of the slot 231 on the screw rod, the screw rod will stably move axially in the slot 231 until the screw rod moves axially to the preset position, thereby realizing the alignment operation of the screw rod.

[0026] The alignment and feeding device for screw rod packaging of the present embodiment is also provided with a controller, which is not shown. The controller is electrically connected to various electrical components such as the first driving device 22 and the excitation source 41, and controls the operation of various electrical components.

[0027] In this embodiment, since the alignment guide 5 must align a single screw rod, if two or more screw rods enter the alignment channel while interlocking with each other, it is very easy to cause the screw rods to get stuck and the screw rod threads to get damaged; although the chain rod conveying mechanism 2 can fully disperse the stacked screw rods before entering the alignment channel through vibration and gravity, the above-mentioned small probability event may still occur when the exciting force is insufficient; therefore, in order to avoid the screw rods getting stuck in the alignment channel and the screw rod threads to get damaged, an anti-blocking mechanism 3 is provided.

[0028] like Figure 8 As shown, when two or more screw rods are engaged with each other and pass through the material-discharging member 32, the top height of the screw rod not in the slot 231 is higher than the top height of the screw rod in the slot 231, and the material-discharging member 32 will not contact the screw rod in the slot 231. The material-discharging member 32 will contact the screw rod not in the slot 231 and prevent the screw rod from continuing to be transported upward; Generally, the material-push member 32 will rotate upward due to the thrust of the upward-moving screw rod, and the material-push shaft 31 will rotate accordingly, the elastic potential energy of the elastic member 33 will increase, and the resistance of the material-push member 32 to the screw rod will gradually increase. Under the obstruction of the material-push member 32 and the vibration of the excitation source 41, the screw rod that is not in the slot 231 will be forced to roll downward and fall into the slot 231 below which may be unloaded, or will continue to roll downward, so that individual screw rods pass through the material-push member 32 one by one.

[0029] In a preferred embodiment, see Figure 7 The chain conveying mechanism 2 is provided to further include a driving shaft 24, a driven shaft 25, a driving sprocket 26, a driven sprocket 27, and a chain 21. The driving shaft 24 and the driven shaft 25 are respectively rotatably connected to the first frame 1. The first driving device 22 is installed on the first frame 1. The first driving device 22 is transmission-connected to the driving shaft 24. A driving sprocket 26 is installed on the driving shaft 24. A driven sprocket 27 is installed on the driven shaft 25. The driving sprocket 26 and the driven sprocket 27 are transmission-connected through the chain 21.

[0030] The driving rotating shaft 24 is located obliquely above the driven rotating shaft 25. The height of the loading end of the chain rod conveying mechanism 2 is lower than the height of the unloading end thereof, so that the screw rod will be conveyed obliquely upward.

[0031] In this embodiment, two driving sprockets 26 and two driven sprockets 27 are provided, and the driving sprockets 26 and the driven sprockets 27 correspond to each other one by one.

[0032] The chain 21 is a chain with accessories, and the chain 21 is also provided with two accordingly, and the two ends of the round rod 23 are respectively connected to the two chains 21. Specifically, after the end of the round rod 23 passes through the chain with accessories, a gasket is installed, and then a split pin is installed to fix the axial position, and the round rod 23 can rotate relative to the chain 21. The diameter of the end of the round rod 23 is smaller than the diameter of the middle part where it contacts and cooperates with the screw rod, so that it is easy to pass through the chain 21.

[0033] The driving shaft 24 is rotatably connected to the first frame 1 through a square seat bearing, and the square seat bearing is fixedly installed on the first frame 1. The driven shaft 25 is rotatably connected to the first frame 1 through a slider seat bearing, and a track bearing plate for mounting the slider seat bearing is fixed on the first frame 1, and the slider seat bearing is slidably connected to the track bearing plate.

[0034] A hexagonal bolt is also inserted into the first frame 1, and two nuts are installed on the hexagonal bolt. The hexagonal bolt is connected to the bearing with slider seat. By setting the hexagonal bolt and the nut, it is convenient to adjust the position of the bearing with slider seat on the track bearing plate to tighten the chain 21.

[0035] The driven rotating shaft 25 is located obliquely below the driving rotating shaft 24, so that the chain 21 is set obliquely, and the height of the loading end of the chain conveying mechanism 2 is lower than the height of the unloading end. In this way, the chain conveying mechanism 2 will first convey the screw rod obliquely upward when conveying the screw rod, so that the stacked screw rods can slide downward due to gravity and vibration, thereby facilitating the separation of the stacked screw rods.

[0036] In a preferred embodiment, see Figure 4 and Figure 8 The anti-blocking mechanism 3 is also provided with a mounting bracket 34, a sensing member 35, a tensioning member 36, a detection sensor 37, and a limit member 38. The mounting bracket 34 is fixedly mounted on the first frame 1, and the material-discharging shaft 31 is rotatably mounted on the mounting bracket 34. The detection sensor 37 and the limit member 38 are fixedly mounted on the mounting bracket 34. The sensing member 35 and the tensioning member 36 are fixedly mounted on the material-discharging shaft 31. The two ends of the elastic member 33 are respectively connected to the mounting bracket 34 and the tensioning member 36. The elastic member 33 is used to provide an elastic force to the material-discharging shaft 31 to make it at an interception angle; when the material-discharging shaft 31 is at the interception angle, the tensioning member 36 abuts against the limit member 38; the detection sensor 37 is cooperatively arranged with the sensing member 35 to detect whether the material-discharging shaft 31 is rotated from the interception angle to the blocking angle.

[0037] The elastic member 33 is a tension spring. In other embodiments, the elastic member 33 may also be a torsion spring, one end of which is connected to the tension member 36 and the other end of which is connected to the mounting bracket 34 .

[0038] The detection sensor 37 is a proximity switch, such as a photoelectric proximity switch or an infrared switch. The limiter 38 is a bolt assembly.

[0039] When the tensioning member 36 rotates to abut against the limiting member 38, the detection sensor 37 cannot detect the position signal of the sensing member 35. When the material-diverting shaft 31 rotates from the intercepting angle to the blocking angle, the sensing member 35 rotates to the detection sensor 37, and the detection sensor 37 detects the position signal of the sensing member 35.

[0040] The blocking angle interval is between the interception angle and the blocking angle. Under normal circumstances, the material-digging shaft 31 is at the interception angle. When the material-digging member 32 contacts the screw rod, the material-digging shaft 31 moves in the blocking angle interval, and the material-digging member 32 contacts the screw rod flexibly, flexibly restricting the screw rod that is not in the slot 231 from passing.

[0041] In some extreme cases, if there are two or more screws that are extremely difficult to separate, the material-diverting member 32 will continue to rotate upward due to the thrust of the screw moving upward, and the gap between the bottom end of the material-diverting member 32 and the round rod 23 will gradually increase. When the material-diverting shaft 31 rotates to the blocking angle, the gap between the bottom end of the material-diverting member 32 and the round rod 23 is large, which may cause multiple screws to pass through, and the function of the material-diverting member 32 to control a single screw to pass through will be temporarily invalid. At this time, the detection sensor 37 detects that the material-diverting shaft 31 rotates to the blocking angle, and sends a signal to the controller, which controls the first drive device 22 to stop working, and the operator comes to check to avoid the situation where two or more screws enter the alignment channel.

[0042] Furthermore, in order to remind the staff to come and check when the material-discharging shaft 31 is at a blocking angle, the anti-blocking mechanism 3 also includes an alarm 39, which is installed on the second frame 7 or the first frame 1. The alarm 39 is electrically connected to the controller. When the material-discharging shaft 31 is at a blocking angle, the detection sensor 37 sends a signal to the controller, and the controller controls the alarm 39 to sound an alarm.

[0043] In a preferred embodiment, see Figure 7 The vibration mechanism 4 also includes a vibration plate 42 and a first shock absorbing device 43 . The vibration plate 42 is connected to the first frame 1 through the first shock absorbing device 43 . The vibration source 41 is installed on the vibration plate 42 . The vibration plate 42 is in contact with the round rod 23 .

[0044] The first shock absorbing device 43 may be a spring shock absorber, or a hydraulic shock absorber or an adjustable damping shock absorber or other shock absorbing device capable of achieving a shock absorbing function. By providing the first shock absorbing device 43, the first frame 1 may stably support the vibration plate 42.

[0045] The top end of the vibration plate 42 is a plane, which can increase the contact area with the round rod 23 and improve the vibration and support effect on the round rod 23.

[0046] In a preferred embodiment, see Figure 1 , Figure 6 and Figure 7 In order to facilitate the conveying of the screw rod to the chain rod conveying mechanism 2, a linear vibrating feeder 6 is also provided. The linear vibrating feeder 6 is electrically connected to the controller. The linear vibrating feeder 6 includes a silo 61 for accommodating a plurality of screw rods. The width of the silo 61 is greater than the length of the screw rod. The linear vibrating feeder 6 is used to convey the screw rod to the chain rod conveying mechanism 2.

[0047] When the length of the screw rod is 2 meters, the width of the silo 61 can be set to 2.1-2.3 meters to facilitate the entry of the screw rod hanging bag; the linear vibrating feeder 6 is used to convey the screw rod to the chain rod conveying mechanism 2.

[0048] Since the screw rods are piled together after production and are transferred by a crane, in order to avoid a large number of screw rods being directly lifted onto the chain rod conveying mechanism, resulting in poor separation effect of individual screw rods, a linear vibrating feeder 6 is set. The crane first transfers the piled screw rods to the linear vibrating feeder 6, and the linear vibrating feeder 6 then conveys the screw rods in small batches to the chain rod conveying mechanism 2, to avoid too many screw rods entering the chain rod conveying mechanism 2 at one time.

[0049] Further, in order to prevent the screw rod on the chain conveying mechanism 2 from being affected by vibration and gravity and from being separated from the chain conveying mechanism at its unloading end, please refer to Figure 6 and Figure 7 The material bin 61 includes a guide plate 62 located at its unloading end, and the lower end of the guide plate 62 extends to the loading end of the chain rod conveying mechanism 2. The guide plate 62 is used to block the screw rod on the round rod 23 from passing downward.

[0050] By providing the guide plate 62, it is possible to facilitate the material bin 61 to transport the screw rod to the chain rod conveying mechanism 2, and to prevent the screw rod accumulated at the feeding end of the chain rod conveying mechanism 2 from falling.

[0051] Two side plate guard strips 63 are fixed on the first frame 1 and located on both sides of the guide plate 62. The end surfaces of the two side plate guard strips 63 facing each other are inclined surfaces. When the screw rod falls into the chain rod conveying mechanism 2 from the guide plate 62, the screw rod can be guided to fall stably onto the chain rod conveying mechanism 2, so that the axial position of the screw rod on the chain rod conveying mechanism 2 is roughly determined, which is convenient for the subsequent contact and cooperation between the screw rod and the alignment guide 5.

[0052] See also Figure 7 A storage space is formed between the guide plate 62 and the round rod 23 and the two side plate guard strips 63. The screw rods sliding down the round rod 23 and the screw rods transported by the linear vibrating feeder 6 to the chain rod conveying mechanism 2 will enter the storage space. If there are many screw rods in the storage space, the linear vibrating feeder 6 can be controlled to stop working to avoid too many screw rods on the chain rod conveying mechanism 2, which affects the efficiency of single screw rod separation. After the screw rods in the storage space become fewer, the linear vibrating feeder 6 can be controlled to work.

[0053] In a preferred embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 7 In order to facilitate the installation of the first frame 1, a second frame 7 is also provided, and the first frame 1 is installed on the second frame 7 through a second shock absorbing device 71.

[0054] The second shock absorbing device 71 may be a spring shock absorber, or a hydraulic shock absorber or an adjustable damping shock absorber or other shock absorbing device capable of achieving a shock absorbing function. By providing the second shock absorbing device 71, the second frame 7 can stably support the first frame 1.

[0055] In a preferred embodiment, see Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Fig. 9 In order to accurately detect the number of screw rods, a counting mechanism 8 is also provided. The counting mechanism 8 includes a counting plate 81, a micro switch 82 and a limit bar 83. The counting plate 81 and the limit bar 83 are fixedly mounted on the first frame 1. The counting plate 81 is located at the unloading end of the chain rod conveying mechanism 2. The micro switch 82 is mounted at the bottom end of the counting plate 81. An opening is opened on the counting plate 81. The detection end of the micro switch 82 extends out of the opening and can contact and cooperate with the screw rod output by the chain rod conveying mechanism 2. The limit bar 83 is located on the periphery of the round rod 23 at the unloading end of the chain rod conveying mechanism 2, and is used to limit the screw rod from escaping from the card slot 231, so that the screw rod conveyed by the chain rod conveying mechanism 2 falls at the preset position of the counting plate 81.

[0056] Under the limit of the limit bar 83, the screw rod will not be separated from the slot 231. Only when the screw rod moves to the bottom of the limit bar 83 and loses the limit of the limit bar 83, the screw rod will be separated from the slot 231 and fall onto the counting board 81, then roll on the counting board 81 to the micro switch 82, and finally roll off the counting board 81. The micro switch 82 can also be replaced by a non-contact proximity switch.

[0057] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Fig. 9 In order to facilitate the delivery of a preset number of aligned screw rods to the packaging equipment, a temporary storage mechanism 9 is also provided. The temporary storage mechanism 9 includes a material distribution shaft 91, a material distribution rod 92, and a second driving device 93. The material distribution shaft 91 is rotatably connected to the second frame 7. The material distribution rod 92 is fixedly mounted on the material distribution shaft 91 and is located below the counting plate 81. The material distribution rod 92 can form at least three V-shaped limiting spaces 921 that are evenly distributed in the circumferential direction. The V-shaped limiting spaces 921 are used to collect the screw rods output by the counting plate 81; the second driving device 93 is fixedly connected to the second frame 7, and the output end of the second driving device 93 is transmission-connected to the material distribution shaft 91. The second driving device 93 drives the material distribution shaft 91 to intermittently rotate at a preset angle, so that one of the V-shaped limiting spaces 921 is located at the material receiving station and receives the screw rod output by the counting plate 81, and one of the V-shaped limiting spaces 921 is located at the material unloading station and discharges the screw rod under the action of gravity.

[0058] In the present embodiment, the dividing rod 92 is provided to form four V-shaped limiting spaces 921 which are evenly distributed in the circumferential direction. In other embodiments, the dividing rod 92 may also be provided to form three, five, six, seven, eight, nine or more V-shaped limiting spaces 921 which are evenly distributed in the circumferential direction. However, it is best not to exceed nine, otherwise there will be problems such as the total storage volume of the V-shaped limiting space being limited and the dividing rod 92 being too large in size.

[0059] The second driving device 93 is a stepper motor equipped with a worm gear reducer or a servo motor equipped with a worm gear reducer, and has a self-locking function.

[0060] After the micro switch 82 detects the passage of the screw rod, it sends a signal to the controller, and the controller counts. When the count reaches a preset value, the controller controls the second drive device 93 to work, and the second drive device 93 drives the material distribution shaft 91 and the material distribution rod 92 to rotate 90 degrees, so that one of the V-shaped limit spaces 921 is located at the material receiving station, and the opening of the V-shaped limit space is upward to receive the screw rod output by the counting plate 81; one of the V-shaped limit spaces 921 is located at the material unloading station, and the opening of the V-shaped limit space is toward the side away from the chain rod conveying mechanism 2, so that the screw rod can be discharged under the action of gravity, and the collecting mechanism of the packaging equipment can be set at the output end of the V-shaped limit space 921, so as to realize quantitative automatic packaging.

[0061] Furthermore, after the material distribution shaft 91 is driven to rotate 90 degrees by the second driving device 93, the next V-shaped limit space can be quickly rotated to the material receiving station to continue the collection operation of the screw rod without stopping the machine, thereby improving production efficiency.

[0062] For further information, see Figure 2 and Figure 5 , a positioning detection mechanism 94 may also be provided, including an angle positioning piece 941 and a proximity switch 942. An angle positioning piece 941 is fixed at one end of the material distribution shaft 91 away from the second drive device 93. The angle positioning piece 941 has four induction pieces spaced 90 degrees apart. A proximity switch 942 is installed on the second frame 7 to detect the position of the induction piece. Every time the material distribution shaft 91 rotates 90 degrees, the proximity switch 942 will detect the position signal of the induction piece once, thereby improving the detection accuracy. When the positioning detection mechanism 94 is provided, the second drive device 93 may use a motor of other types without precise output angle control equipped with a worm gear reducer.

[0063] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0064] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An alignment and feeding device for screw rod packaging, characterized in that: include: First rack (1); A chain rod conveying mechanism (2) is arranged on the first frame (1), comprising a chain (21), a first driving device (22) for driving the chain (21) to perform a rotary motion, and a plurality of round rods (23) mounted on the chain (21); wherein the height of the loading end of the chain rod conveying mechanism (2) is lower than the height of the unloading end thereof, and a slot (231) for accommodating a single screw rod can be formed between two adjacent round rods (23); The anti-blocking mechanism (3) comprises a material-discharging rotating shaft (31), a material-discharging member (32), and an elastic member (33), wherein the material-discharging rotating shaft (31) is rotatably connected to the first frame (1), the material-discharging member (32) is mounted on the material-discharging rotating shaft (31), the elastic member (33) is used to provide an elastic force to the material-discharging rotating shaft (31) to make it be at an interception angle, and the material-discharging member (32) is used to restrict the passage of a screw rod that is not completely in the slot (231); A vibration excitation mechanism (4) comprising a vibration excitation source (41) for providing vibration to the round rod (23); The alignment guide (5) is located between the anti-blocking mechanism (3) and the unloading end of the chain rod conveying mechanism (2), and is used to contact and cooperate with the end of the screw rod in the slot (231) to align the end of the screw rod.

2. The alignment and feeding device for screw rod packaging according to claim 1, characterized in that: The chain rod conveying mechanism (2) further comprises a driving shaft (24), a driven shaft (25), a driving sprocket (26), a driven sprocket (27), and a chain (21); the driving shaft (24) and the driven shaft (25) are respectively rotatably connected to the first frame (1); a first driving device (22) is mounted on the first frame (1); the first driving device (22) is transmission-connected to the driving shaft (24); a driving sprocket (26) is mounted on the driving shaft (24); a driven sprocket (27) is mounted on the driven shaft (25); and the driving sprocket (26) and the driven sprocket (27) are transmission-connected via the chain (21).

3. The alignment and feeding device for screw rod packaging according to claim 1, characterized in that: The anti-blocking mechanism (3) further comprises a mounting bracket (34), a sensing member (35), a tensioning member (36), a detection sensor (37), and a limiting member (38); the mounting bracket (34) is fixedly mounted on the first frame (1); the material-dispensing shaft (31) is rotatably mounted on the mounting bracket (34); the detection sensor (37) and the limiting member (38) are fixedly mounted on the mounting bracket (34); the sensing member (35) and the tensioning member (36) are fixedly mounted on the material-dispensing shaft (31); two ends of the elastic member (33) are respectively connected to the mounting bracket (34) and the tensioning member (36); the elastic member (33) is used to provide an elastic force to the material-dispensing shaft (31) so that the material-dispensing shaft (31) is at an interception angle; when the material-dispensing shaft (31) is at the interception angle, the tensioning member (36) abuts against the limiting member (38); the detection sensor (37) is arranged in cooperation with the sensing member (35) to detect whether the material-dispensing shaft (31) is rotated from the interception angle to the blocking angle.

4. The alignment and feeding device for screw rod packaging according to claim 3, characterized in that: The anti-blocking mechanism (3) further comprises an alarm (39), and when the material-moving rotating shaft (31) is at a material-blocking angle, the alarm (39) sounds an alarm.

5. The alignment and feeding device for screw rod packaging according to claim 1, characterized in that: The excitation mechanism (4) further comprises a vibration plate (42) and a first shock absorbing device (43); the vibration plate (42) is connected to the first frame (1) via the first shock absorbing device (43); the excitation source (41) is mounted on the vibration plate (42); and the vibration plate (42) is in contact with the round rod (23).

6. The alignment and feeding device for screw rod packaging according to claim 1, characterized in that: It also includes a linear vibrating feeder (6), the linear vibrating feeder (6) including a material bin (61) for accommodating a plurality of screw rods, the width of the material bin (61) being greater than the length of the screw rods, and the linear vibrating feeder (6) being used to convey the screw rods to the chain rod conveying mechanism (2).

7. The alignment and feeding device for screw rod packaging according to claim 6, characterized in that: The material bin (61) comprises a material guide plate (62) located at its unloading end, the lower end of the material guide plate (62) extending to the loading end of the chain rod conveying mechanism (2), and the material guide plate (62) is used to block the screw rod on the round rod (23) from passing downward.

8. The alignment and feeding device for screw rod packaging according to any one of claims 1 to 7, characterized in that: It also includes a second frame (7), and the first frame (1) is mounted on the second frame (7) via a second shock absorbing device (71).

9. The alignment and feeding device for screw rod packaging according to claim 8, characterized in that: The counting mechanism (8) further comprises a counting mechanism (8), the counting mechanism (8) comprising a counting plate (81), a micro switch (82) and a limit bar (83), the counting plate (81) and the limit bar (83) being fixedly mounted on the first frame (1), the counting plate (81) being located at the unloading end of the chain rod conveying mechanism (2), the micro switch (82) being mounted at the bottom end of the counting plate (81), an opening being formed on the counting plate (81), a detection end of the micro switch (82) extending out of the opening and being capable of contacting and cooperating with a lead screw output by the chain rod conveying mechanism (2), and the limit bar (83) being located on the periphery of the round rod (23) at the unloading end of the chain rod conveying mechanism (2) and being used for limiting the lead screw from being separated from the slot (231), so that the lead screw transported by the chain rod conveying mechanism (2) falls at a preset position of the counting plate (81).

10. The alignment and feeding device for screw rod packaging according to claim 9, characterized in that: The invention also comprises a temporary storage mechanism (9), the temporary storage mechanism (9) comprising a material distribution rotating shaft (91), a material distribution rod (92), and a second driving device (93); the material distribution rotating shaft (91) is rotatably connected to the second frame (7); the material distribution rod (92) is fixedly mounted on the material distribution rotating shaft (91); the material distribution rod (92) can form at least three V-shaped limiting spaces (921) evenly distributed in the circumferential direction; the V-shaped limiting spaces (921) are used to collect the screw rod output by the counting plate (81); the second driving device (93) is fixedly connected to the second frame (7); the output end of the second driving device (93) is transmission-connected to the material distribution rotating shaft (91); the second driving device (93) drives the material distribution rotating shaft (91) to intermittently rotate at a preset angle, so that one of the V-shaped limiting spaces (921) is located at a material receiving station and receives the screw rod output by the counting plate (81); and one of the V-shaped limiting spaces (921) is located at a material unloading station and discharges the screw rod under the action of gravity.

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