Knob nut pressing machine

Abstract

A rotary knob nut pressing machine comprises a rotary knob feeding unit which comprises a rotary knob vibration disc, a rotary knob conveying guide rail, a vertical vibrator, a vertical guide rail, a pushing assembly and a rotary knob positioning assembly. The knob conveying guide rail is communicated with the knob vibration disc, and the knob can be conveyed along the knob conveying guide rail; the upright vibrator is connected with the knob conveying guide rail; the vertical guide rail is located on the side, away from the knob vibration disc, of the knob conveying guide rail and provided with a containing space extending downwards in the vertical direction. The material pushing assembly is used for pushing the knob into the accommodating space; the knob positioning assembly comprises a limiting block and a centering rod; the limiting block and the centering rod extend in the horizontal direction and can stretch out and draw back in the containing space. The centering rod is located over the limiting block, and a first pressing opening which is opposite to the limiting block and communicates with the outside is formed in the side, away from the limiting block, of the containing space. Compared with the prior art, the knob nut pressing machine can improve the automation degree of knob nut pressing work.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of spare part processing, particularly to a knob nut pressing machine. BACKGROUND

[0002] The existing electric appliance is provided with a knob, and the user can realize various function adjustment by rotating the knob, and the knob is generally rotatably installed on other spare parts to facilitate rotation operation. In order to ensure the strength of the knob and reduce the production cost, the body of the knob is usually made of plastic, and the nut made of metal is pressed into the place of shaft connection with other spare parts.

[0003] Please refer to Figure 1 and Figure 2 , the common knob 100 includes a shell 100A, a nut mounting part 100B and a handle 100C. The shell 100A is generally cylindrical, the nut mounting part 100B is opened in the shell 100A, used for installing the nut 200, the nut 200 is pressed into the nut mounting part 100B, and is connected with the nut 200 in the shaft. Preferably, a plurality of ribs are protruded on the inner wall of the nut mounting part 100B, so that the nut 4 and the shell 100A form an interference fit. A plurality of handles 100C are arranged on the outer side wall of the shell 100A in the circumferential direction and extend in the radial direction, and each handle 100C is separated by a certain distance in the circumferential direction to facilitate the user to grasp with the hand. Among them, the number of handles 100C is more than 3.

[0004] The existing knob nut pressing operation is often fixed by using a tool by hand, and then the nut is pressed into the knob. However, the shape of the knob is complex and variable, which brings certain difficulty to manual fixing, increases processing time, and the complex and variable shape of the knob also makes it difficult to realize automatic feeding of the knob, and the automation degree of the knob nut pressing operation is low. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at overcoming the defects or deficiencies of the prior art, and provides a knob nut pressing machine.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] The utility model provides a knob nut press fitting machine, including knob feeding unit, the knob feeding unit includes knob vibration disc, knob conveying guide rail, vertical vibrator, vertical guide rail, push material subassembly and knob positioning subassembly, the knob vibration disc is used to deposit knob, knob conveying guide rail with knob vibration disc intercommunication, so that the knob can convey along knob conveying guide rail, vertical vibrator with knob conveying guide rail is connected, vertical guide rail is located the side of knob conveying guide rail away from knob vibration disc, is equipped with the containing space that extends downward along vertical direction, push material subassembly is located the side of knob conveying guide rail away from knob vibration disc, is used for pushing the knob into the containing space, the knob positioning subassembly includes limit block and centering rod, limit block and centering rod extend along the horizontal direction and can be telescopic in and out of the containing space, along vertical direction projection, limit block is close to the middle part of containing space, centering rod is located the just above of limit block, the side of containing space away from limit block is equipped with first press fitting mouth with limit block opposite and intercommunication outside.

[0008] Compared with the prior art, the knob nut press fitting machine of the utility model makes the knobs stand up and face the same direction through the knob feeding unit, the push material subassembly pushes the standing knobs into the vertical guide rail, the knobs fall freely under the action of gravity while keeping the standing state, until the knobs are fixed with the limit block and the centering rod, realizing automatic feeding and positioning of the knobs, improving the automatic degree of knob fixing and reducing the time consumption.

[0009] In one embodiment, the knob positioning subassembly further comprises a material separating piece and a driving cylinder; the material separating piece is located just above the centering rod; the driving cylinder is connected with the limit block, the centering rod and the material separating piece respectively, and drives them to extend in and out of the containing space respectively, separates two knobs through the material separating piece, and when the finished products are discharged, the knobs that are not pressed into the nuts also fall, and the work is affected.

[0010] In one embodiment, the knob feeding unit further comprises a detection assembly, the detection assembly comprising a first detector, a second detection piece and a third detector; the first detector is arranged on the knob conveying guide rail and is used to detect whether the knob enters the knob conveying guide rail; the second detection piece is close to the push material subassembly and is used to detect whether the knob reaches the push material subassembly; the third detector is close to the limit block and is used to detect whether the knob falls onto the limit block, the detection assembly is arranged to detect the action of the knob, and the precision of the knob feeding action is improved.

[0011] In one embodiment, the pushing assembly comprises a pushing cylinder and a pushing block; the pushing block is connected with the output end of the pushing cylinder and is provided with a first opening capable of communicating with the knob conveying guide rail and a second opening communicating with the accommodating space; the moving direction of the pushing block is perpendicular to the extending direction of the knob conveying guide rail in the vertical direction; the single dry knob can be accurately put into the accommodating space by the pushing block.

[0012] In one embodiment, the nut feeding unit and the pressing unit are further included; the nut feeding unit comprises a nut vibrating disc and a nut guide rail; one end of the nut guide rail communicates with the nut vibrating disc and the other end communicates with the pressing unit; the pressing unit is connected with the vertical guide rail and is provided with a second pressing opening communicating with the first pressing opening, so as to realize the automatic feeding and pressing operation of the nut.

[0013] In one embodiment, the nut guide rail is provided with an inclined pipe section and a straight pipe section communicating with each other; the inclined pipe section communicates with the nut vibrating disc and is inclined to the straight pipe section relative to the horizontal plane; the straight pipe section communicates with the pressing unit, so that the nut is automatically turned to the direction opposite to the knob during the conveying process.

[0014] In one embodiment, the pressing unit comprises a base, a pushing cylinder, a pressing head and a blocking block; the base is connected with the vertical guide rail and is provided with a pressing channel; the second pressing opening is arranged on one side of the pressing channel and communicates with the pressing channel; one end of the pressing channel communicates with the end of the straight pipe section away from the inclined pipe section; the blocking block is arranged at the end of the pressing channel away from the straight pipe section; the pressing head is coaxially arranged with the centering rod and is driven by the pushing cylinder to approach or move away from the pressing channel, so as to press the nut in the pressing channel into the knob.

[0015] In one embodiment, the defective product recycling unit is further included; the defective product recycling unit comprises a defective product recycling pipeline and a pusher; under the pushing of the pusher, one end of the defective product recycling pipeline is pushed to below the limiting block and towards the limiting block, so as to realize the automatic recycling of the defective product.

[0016] In one embodiment, the pusher is a cylinder, so as to simplify the structure of the defective product recycling unit.

[0017] In one embodiment, the vertical guide rail is provided with a clamping part located in the accommodating space and located on the side opposite to the first pressing opening; the clamping part extends in the vertical direction; at least a part of the knob can be clamped into the clamping part, so as to realize the positioning of the knob in the accommodating space and make the knob not easily change during the falling process.

[0018] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 (a) is a front view of a knob in the prior art;

[0020] Figure 1 (b) is a front view of a nut in the prior art;

[0021] Figure 2 This is a schematic diagram of the overall structure when the nut is pressed into the knob in the prior art;

[0022] Figure 3 This is a front view of the knob and nut pressing machine of this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the knob and nut pressing machine of this utility model;

[0024] Figure 5 This is a schematic diagram of the overall structure of the knob feeding unit of this utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of the knob vibrating disc of this utility model;

[0026] Figure 7 This is a top view of the knob vibrating disc of this utility model;

[0027] Figure 8 For along Figure 6 The sectional projection after ZZ sectioning;

[0028] Figure 9 This is a partial projection view of the knob conveying guide rail of this utility model when projected along its extension direction.

[0029] Figure 10 This is a schematic diagram of the overall structure of the feeding assembly of this utility model;

[0030] Figure 11 A schematic diagram of the overall structure of the pusher block of this utility model;

[0031] Figure 12 Top view of the vertical guide rail of this utility model;

[0032] Figure 13 Front view of the main body of this utility model;

[0033] Figure 14 This is a schematic diagram of the overall structure of the knob positioning component of this utility model;

[0034] Figure 15The utility model discloses a whole structure schematic diagram of knob positioning assembly after the removal of cover body;

[0035] Figure 16 The utility model discloses a partial sectional view of knob positioning assembly when projecting along the horizontal direction;

[0036] Figure 17 The utility model discloses a whole structure schematic diagram of nut feeding unit of the utility model;

[0037] Figure 18 The utility model discloses a whole structure schematic diagram of nut guide rail of the utility model;

[0038] Figure 19 The utility model discloses a partial sectional view of nut feeding unit when projecting along the horizontal direction;

[0039] Figure 20 The utility model discloses a whole structure schematic diagram of workbench of the utility model.

[0040] 10, workbench; 11, product outlet; 20, knob feeding unit; 21, knob vibration disc; 211, knob disc mounting plate; 212, disc body; 212A, knob inlet; 212B, protrusion; 213, knob connecting channel; 214, support rod; 215, first elastic member; 216, vibrator; 22, knob conveying guide rail; 23, vertical vibrator; 231, vibration main body; 232, support; 233, damping pad; 24, pushing assembly; 241, pushing platform; 242, pushing cylinder; 243, pushing block; 243A, first opening; 243B, second opening; 25, vertical guide rail; 251, main body; 251A, clamping portion; 251B, first pressing opening; 251C, through hole; 252, cover body; 26, knob positioning assembly; 261, limiting block; 262, centering rod; 263, material separating piece; 264, driving cylinder; 27, detection assembly; 271, first detector; 272, second detection member; 273, third detector; 30, nut feeding unit; 31, nut vibration disc; 32, nut guide rail; 321, inclined pipe section; 321A, upper side wall; 321B, lower side wall; 321C, left side wall; 321D, right side wall; 322, straight pipe section; 322A, vertical upper side wall; 322B, vertical lower side wall; 322C, vertical left side wall; 322D, vertical right side wall; 323, nut inlet; 40, pressing unit; 41, base; 411, pressing channel; 412, second pressing opening; 42, pushing cylinder; 43, pressing head; 44, blocking block; 50, defective product recycling unit; 51, defective product recycling pipeline; 52, pusher; 60, controller; 100, knob; 100A, shell; 100B, nut mounting portion; 100C, handle; 200, nut; D1: first diameter; D2: second diameter; D3, third diameter; D4, fourth diameter; H1, first thickness; H2, second thickness; H3, third thickness; L1, horizontal guide rail inner height; L2, horizontal guide rail inner width; L3, nut guide rail height; L4, nut guide rail width. DETAILED DESCRIPTION

[0041] In view of the fact that the knob is not easy to fix in the knob nut pressing operation and the automation degree of the knob feeding is low in the prior art, the applicant has analyzed and researched the shape of the knob and the knob nut pressing operation, and found that although the shape of the knob is complex and variable, it has some regularities in appearance, for example, most of them are provided with three or more handles, and the spacing between the two handles is uniform, so the two handles can be used to position the knob.

[0042] In view of the above finding, the applicant proposes a knob nut pressing machine, which utilizes a knob vibration disc to enable the knob to be automatically turned in the horizontal guide rail to be vertically arranged with the two handles as the support, then under the vibration of the vertical vibrator, the knob moves along the knob conveying guide rail to the pushing platform connected with the knob conveying guide rail, then under the action of gravity, the vertically arranged knob is conveyed through the vertical guide rail and is positioned in the vertical guide rail in combination with the centering rod, so as to realize the automatic feeding of the knob, and then the automatically fed nut is pressed to the knob, and the finished product is discharged, finally realizing the automatic production of the knob nut pressing work. The following are some specific embodiments of the knob nut pressing machine of the present application:

[0043] to press the nut 200 of Figure 1 (b) to the knob 100 of Figure 1 (a), wherein please refer to Figure 1 and Figure 2 , the maximum outer diameter of the knob 100 is a first diameter D1, the outer diameter of the knob 100 shell is a second diameter D2, the thickness of the knob 100 is a first thickness H1, and the first thickness H1 is less than the first diameter D1. The maximum outer diameter of the nut 200 is a third diameter D3, the thickness of the nut 200 is a second thickness H2, the distance between the two opposite and parallel sides of the nut 200 is a third thickness H3, and the screw hole diameter of the nut 200 is a fourth diameter D4.

[0044] Please refer to Figure 3 and Figure 4 , the knob nut pressing machine of the present application comprises a workbench 10, a knob feeding unit 20, a nut feeding unit 30, a pressing unit 40, a defective product recycling unit 50 and a controller 60. The workbench 10 is parallel to the horizontal plane, the knob feeding unit 20, the nut feeding unit 30 and the pressing unit 40 are arranged above the workbench 10, the defective product recycling unit 40 is arranged below the workbench 10, and under the control of the controller 60, the knob feeding unit 20 and the nut feeding unit 30 respectively feed the knob 100 and the nut 200, the pressing unit 40 presses them together, and the defective product recycling unit 40 recycles defective products.

[0045] Specifically, please refer to Figures 5 to 16 , the knob feeding unit 20 comprises a knob vibration disc 21, a knob conveying guide rail 22, a vertical vibrator 23, a pushing assembly 24, a vertical guide rail 25, a knob positioning assembly 26 and a detection assembly 27.

[0046] The knob vibration disc 21 comprises a knob disc mounting plate 211, a disc body 212, a knob connecting channel 213, a support rod 214, a first elastic member 215 and a vibrator 216. The plate surface of the knob disc mounting plate 211 is parallel to the tabletop of the workbench 10, and the disc body 212 is arranged above the mounting plate 211. Preferably, the four corners of the knob disc mounting plate 211 are respectively provided with a support rod 214 perpendicular to the tabletop of the workbench 10, so that the knob disc mounting plate 211 is separated from the workbench 10 by a certain distance, and each support rod 214 is respectively sleeved with a first elastic member 215, and the two ends of the first elastic member 215 are respectively abutted with the plate surface of the knob disc mounting plate 211 and the tabletop of the workbench 10 to absorb the vibration of the knob vibration disc 21. The disc body 212 is hollow, and the vibrator 216 is connected with the disc body 212 to make it vibrate. The top of the disc body 212 away from the workbench 10 is provided with a knob inlet 212A in communication with the outside, and the knob connecting channel 213 is arranged on the disc body 212 and communicates with the knob outlet 212A. Under the vibration of the vibrator 216, the knob 100 rotates in the knob connecting channel 213 to an upright state supported by two handles. In addition, as shown in Figure 8 FIG. 12, a protrusion 212B can be arranged at the knob inlet 212A according to the shape of the knob 100 to limit the swing direction of the knob 100 when entering the knob outlet 212A, so that the nut mounting portion in the knob 100 is consistent in the direction of the knob connecting channel 213.

[0047] One end of the knob conveying guide rail 22 is connected with the knob outlet 212A through the knob connecting channel 213 and extends in the horizontal direction. The inner height L1 of the horizontal guide rail of the knob conveying guide rail 22 is greater than or equal to the first diameter D1 of the knob 100, the inner width L2 of the horizontal guide rail is greater than or equal to the first thickness H1 of the knob 100, and the inner height L1 of the horizontal guide rail is greater than the inner width L2 of the horizontal guide rail, so that the axes of the knobs 100 entering the knob conveying guide rail 22 are arranged in the knob conveying guide rail 22 in sequence along the extension direction of the knob conveying guide rail 22, and are moved to the direction of the pushing assembly 24 under the pushing of the knob 100 entering from the knob vibration disc 21. In addition, the knob conveying guide rail 22 can also be slightly inclined relative to the horizontal plane, so that the knob 100 has a tendency to slide to the pushing assembly 24 under the action of gravity.

[0048] The vertical vibrator 23 is connected with the knob conveying rail 22, so that the knob conveying rail 22 is vibrated. In the embodiment, the vertical vibrator 23 is arranged between the workbench 10 and the knob conveying rail 22, and is provided with a vibration body 231, a support 232 and a damping pad 233. The support 231 extends in the vertical direction from the workbench 10, the damping pad 232 is arranged between the support 231 and the vibration body 231 to absorb vibration, and the vibration body 231 is connected with the knob conveying rail 22. The knob 100 in the knob conveying rail 22 rotates around the shaft after being vibrated, until the adjacent two handles are connected with the bottom surface in the knob conveying rail 22. Under the vibration of the vertical vibrator 23, the knob 100 continuously moves along the knob conveying rail 22 to the pushing assembly 24.

[0049] Please refer to Figure 10 and Figure 11 The pushing assembly 24 is arranged at the end of the knob conveying rail 22 away from the knob vibration disc 21, and comprises a pushing platform 241, a pushing cylinder 242 and a pushing block 243. The pushing platform 241 is arranged on the top surface of the workbench 10 and is connected with the end of the knob conveying rail 22 away from the knob vibration disc 21. The pushing cylinder 242 is arranged on one side of the pushing platform 241. In the vertical projection, the moving direction of the piston rod of the pushing cylinder 242 is perpendicular to the extending direction of the knob conveying rail 22. The pushing block 243 is connected with the piston rod of the pushing cylinder 242, and moves linearly under the driving of the pushing cylinder 242. The vertical guide rail 25 is arranged on the moving track of the pushing block 243, so that the knob 100 is pushed into the vertical guide rail 25. In the embodiment, the pushing block 243 is hollow and is provided with a first opening 243A connected with the knob conveying rail 22 and a second opening 243B connected with the vertical guide rail 25 and facing the top surface of the workbench 10. The vertical guide rail 25 is arranged on the side of the pushing block 243 away from the pushing cylinder 242, so that the knob 100 is pushed into the vertical guide rail 25 when the pushing block 243 moves away from the pushing cylinder 242. It can be understood that the vertical guide rail 25 can also be arranged on the side of the pushing platform 241 close to the pushing cylinder 242 and is provided with a through hole. The vertical guide rail 25 is arranged below the through hole of the pushing cylinder 242, so that the knob 100 can also be pushed into the vertical guide rail 25 when the pushing block 243 moves close to the pushing cylinder 242.

[0050] Please refer to Figure 12 and Figure 13The vertical guide rail 25 extends in the vertical direction towards the workbench 10 and communicates with the second opening 243B. In the vertical projection, the pressing unit 40 is located on the moving track of the pushing block 243 and interfaces with the vertical guide rail 25. The knob positioning assembly 26 is located on the side of the vertical guide rail 25 away from the pushing assembly 24. The vertical guide rail 25 comprises a main body 251 and a cover 252. The main body 251 extends in the vertical direction. In the vertical projection, the cover 252 covers the side of the main body 251 away from the pushing assembly 24 and is separated from the main body 251 by a certain distance, so as to form an accommodation space between the main body 251 and the cover 252 for accommodating the knob 100. In the embodiment, the number of the cover 252 is two. In the vertical projection, the two covers 252 are symmetrically arranged on the two sides of the main body 251 in the direction perpendicular to the moving direction of the pushing block 243 and are separated by a certain distance, so as to facilitate the observation of the knob 100 in the vertical guide rail 25 from the gap between the two covers 252 during work. In the vertical projection, the accommodation space width A of the accommodation space is greater than the first diameter D1 of the knob 100, and the extension direction of the accommodation space width A is parallel to the extension direction of the knob conveying guide rail 22. The main body 251 is provided with a clamping portion 251A on the side towards the accommodation space, and the clamping portion 251A extends at least to the knob positioning assembly 26 in the vertical direction. In the vertical projection, the clamping portion 251A is located in the middle of the main body 251, the clamping portion width E is greater than or equal to the second diameter D2, the minimum thickness B of the accommodation space is less than the first thickness H1, so that a part of the shell of the knob 100 is clamped to the clamping portion 251A, realizing the positioning of the knob 100 in the accommodation space, and the extension direction of the minimum thickness B is parallel to the moving direction of the pushing block 243. Further, in order to make the clamping of the knob 100 and the clamping portion 251A more smooth, the clamping portion first width C of the clamping portion 251A on the side close to the pushing assembly 24 is greater than the second diameter D2, and the clamping portion second width D of the clamping portion 251A on the side close to the knob positioning assembly 26 is less than the clamping portion first width C. The vertical guide rail 25 is provided with a first pressing opening 251B on the side towards the pressing unit 40, and the first pressing opening 251B is used for the nut 1200 to enter the knob 200.

[0051] Please refer to Figures 14 to 16The knob positioning assembly 26 comprises a limiting block 261, a centering rod 262, a material separating piece 263 and a driving cylinder 264. The limiting block 261, the centering rod 262 and the material separating piece 263 are arranged in sequence from bottom to top in the vertical direction in the vertical guide rail 25 and extend into the accommodation space. Through holes 251C corresponding to the limiting block 261, the centering rod 262 and the material separating piece 263 are respectively formed in the main body 251, so that the limiting block 261, the centering rod 262 and the material separating piece 263 can extend in and out of the accommodation space. Among them, the limiting block 261 is located at the lowermost position in the projection along the moving direction of the pushing block 243, and the limiting block 261 is located at the middle of the vertical guide rail 25 in the horizontal direction and is separated from the inner side wall of the accommodation space by a certain distance. In use, the limiting block 261 is clamped between two adjacent handles of the knob 100 and below the shell of the knob 100. The side of the limiting block 261 facing upward is provided with a circular arc surface 261A, and the diameter of the circular arc surface 261A is equal to the second diameter D2, so that the upper side of the limiting block 261 can abut against the shell of the knob 100 to position the knob 100. The centering rod 262 is located directly above the limiting block 261 and extends along the moving direction of the pushing block 243, and is used to be inserted into the middle of the knob 100 along the axis of the knob 100. The axis of the centering rod 262 and the center of the circular arc surface 261A are located on a straight line extending in the vertical direction in the projection along the moving direction of the pushing block 243. The distance between the centering rod 262 and the limiting block 261 in the vertical direction can be adjusted according to the size of the knob 100. The material separating piece 263 is provided above the centering rod 262, and the distance between the two material separating pieces 263 in the horizontal direction is less than the maximum distance between the two handles of the knob 100. The material separating piece 263 is used to separate two adjacent knobs 100 in the vertical guide rail 25 in the vertical direction, so that the upper knob 100 is not affected by the working of the lower knob 100. The limiting block 261, the centering rod 262 and the material separating piece 263 are used to fix the lowermost knob 100 in the vertical guide rail 25 in the horizontal direction and in the vertical direction, and the material separating piece 263 separates the two knobs 100.

[0052] The driving cylinders 264 are arranged outside the accommodating space, and their output ends are connected with the limiting blocks 261, the centering rods 262 and the material separating pieces 263 respectively to drive the extension and retraction of the limiting blocks 261, the centering rods 262 and the material separating pieces 263 in and out of the accommodating space. In the embodiment, the number of the driving cylinders 264 is three, and they are electrically connected with the controller 60 respectively to drive the movement of the limiting blocks 261, the centering rods 262 and the material separating pieces 263 respectively under the control of the controller 60. In addition, different numbers of the driving cylinders 264 can be arranged according to the pressing action.

[0053] The detection assembly 27 comprises a first detector 271, a second detector 272 and a third detector 273. The first detector 271 is arranged on the knob conveying rail 22 to detect whether the knob 100 enters into the knob conveying rail 22. In the embodiment, the first detector 271 is an optical fiber sensor in the prior art. The knob conveying rail 22 is provided with an opening on each of the opposite sides, and the first detector 271 emits light from the emitter on one side to the receiver on the other side. When the knob 100 enters into the knob conveying rail 22, the light is blocked, so that it is identified that the knob 100 enters into the knob conveying rail 22. The second detector 272 is arranged on the material pushing block 243 or the material pushing platform 241 and located on the side of the material pushing block 243 away from the knob conveying rail 22 to detect whether the knob 100 enters into the material pushing block 243. The second detector 272 can also be an optical fiber sensor in the prior art. The third detector 273 is electrically connected with the controller 50 and arranged on the outside of the two cover bodies 252 respectively and close to the limiting blocks 261 to detect whether the knob 100 falls onto the limiting blocks 261. In the embodiment, the third detector 273 is a diffuse reflection optical fiber sensor in the prior art, and the number thereof is two, which are close to the two handles of the knob 100 clamped with the limiting blocks 261.

[0054] Please refer to Figure 17 The nut feeding unit 30 comprises a nut vibrating disc 31 and a nut rail 32. The nut vibrating disc 31 is arranged on the tabletop of the workbench 10 and spaced apart from the knob vibrating disc 21 to place a plurality of nuts 200 pressed into the knobs 100. Similar to the knob vibrating disc 21, the nut vibrating disc 31 can also be vibrated by a vibrator and supported on the workbench 10 by elastic members to reduce vibration, which will not be described here.

[0055] Please refer to Figure 18 and Figure 19The nut vibration disc 31 is in communication with the nut guide rail 32. The nut guide rail 32 is provided with a slanted pipe section 321, a straight pipe section 322 and a nut inlet 323 in communication with each other. The nut inlet 323 is formed at one end of the slanted pipe section 321 close to the nut vibration disc 31 and faces upward.

[0056] The slanted pipe section 321 extends in a direction inclined to the tabletop of the workbench 10 toward the vertical guide rail 25. The slanted pipe section 321 comprises upper and lower side walls 321A and 321B parallel to each other and inclined to the tabletop of the workbench 10, and left and right side walls 321C and 321D parallel to each other and perpendicular to the horizontal plane. The distance between the upper and lower side walls 321A and 321B is the nut guide rail height L3 of the nut guide rail 32, which is smaller than the third thickness H3 and the fourth diameter D4 and larger than the second thickness H2. When the nut 200 enters the slanted pipe section 321 from the nut inlet 323, the axis of the nut 200 is perpendicular to the lower side wall 321B, and the side of the nut 200 perpendicular to the axis can be in contact with the lower side wall 321B and slide along the lower side wall 321B. Preferably, the distance between the left and right side walls 321C and 321D is the nut guide rail width L4 of the nut guide rail 32, which is smaller than the fourth diameter D4 and larger than or equal to the third thickness H3. When the nut 200 enters the slanted pipe section 321, it is collided with the inner side wall of the slanted pipe section 321 and rotated, and the side of the nut 200 parallel to the axis faces the front of the sliding direction.

[0057] The straight pipe section 322 extends in a vertical direction and comprises vertical upper and lower side walls 322A and 322B connected to the upper and lower side walls 321A and 321B and perpendicular to the horizontal plane, and vertical left and right side walls 322C and 322D connected to the left and right side walls 321C and 321D, respectively. The distance L5 between the vertical upper and lower side walls 322A and 322B is equal to the nut guide rail height L3 and slightly larger than the second thickness H2. When the nut 200 slides along the lower side wall 321B to the straight pipe section 322, it is flipped to have the axis parallel to the horizontal plane and then continues to slide vertically downward. When the nut 200 is collided with the nut 200 below, it is vibrated and rotated around the axis until the side of each of the two nuts 200 parallel to the axis is in contact with each other.

[0058] Please refer to Figure 19The pressing unit 40 comprises a base 41, a pushing cylinder 42, a pressing head 43 and a blocking block 44. The base 41 is installed on the tabletop of the workbench 10 and close to the vertical guide rail 25. The base 41 is provided with a pressing channel 411 extending in the vertical direction and communicating with the straight pipe section 322. The side of the base 41 facing the vertical guide rail 25 is provided with a second pressing opening 412 opposite to the first pressing opening 251B and communicating with the accommodation space. The blocking block 44 is located below the pressing channel 331A and blocks the downward sliding nut 200. The height of the blocking block 44 relative to the workbench 10 can be adjusted to center the knob 100 of different sizes.

[0059] Please refer to Figure 20 The workbench 10 is provided with a product outlet 11. The combined knob 100 and nut 200 after pressing are dropped from the product outlet 11.

[0060] The defective product recycling unit 50 comprises a defective product recycling pipeline 51 and a pusher 52. The defective product recycling pipeline 41 is located below the workbench 10 and is provided with a recycling opening (not labeled) facing the workbench 10. The pusher 42 is electrically connected to the controller 50 and its output end is connected to the defective product recycling pipeline 41 and can push the defective product recycling pipeline 41 to the product outlet 11 so that the recycling opening communicates with the product outlet 11. In this embodiment, the pusher 42 is a cylinder in the prior art and its output end moves in a direction parallel to the horizontal plane.

[0061] Based on the above structure, the process of pressing the knob and nut in this embodiment is described.

[0062] Step S10: The knob 100 and the nut 200 are respectively placed in the knob vibration disc 21 and the nut vibration disc 31, and the knob vibration disc 21 and the nut vibration disc 31 are vibrated respectively.

[0063] Step S20: The knob 100 is sent to the knob pressing position of the knob feeding unit 20, comprising the following steps:

[0064] Step S21: the knob 100 enters the knob connecting channel 213 from the knob entrance 212A after being shaken, and the knob 100 is limited by the knob 212B towards the pressing unit 40;

[0065] Step S22: the first detector 271 detects that the knob 100 enters the knob conveying rail 22 and feeds back a signal to the controller 60, and the vertical shaker 23 is started under the control of the controller 60, and the knob 100 is rotated to be in contact with the inner bottom surface of the knob conveying rail 22, and is in a vertical state.

[0066] Step S23: the knob 100 enters the pushing platform 241 from the knob conveying rail 22, the second detection member 272 detects that the knob 100 enters the pushing block 243 and feeds back a signal to the controller 60, and the pushing cylinder 242 is started under the control of the controller 60, and the pushing block 243 moves towards the vertical guide rail 25.

[0067] Step S24: the pushing block 243 communicates with the accommodation space of the vertical guide rail 25, the knob 100 falls into the accommodation space from the second opening 243B and falls above the limiting block 261.

[0068] Step S25: the third detector 273 detects that the knob 100 falls onto the limiting block 261 and feeds back a signal to the controller 60, and the driving cylinder 264 is started under the control of the controller 60, and the centering rod 262 and the material separating member 263 enter the accommodation space respectively and are located in the nut mounting portion of the knob 100 and above the knob 100, and the knob 100 is limited in the knob pressing position of the accommodation space.

[0069] Step S30: the nut 200 is sent to the nut pressing position of the nut feeding unit 30, including the following steps:

[0070] Step S31: the nut 200 enters the inclined pipe section 321 of the nut guide rail 32 after being shaken and slides along the inclined pipe section 321.

[0071] Step S32: the nut 200 is turned into the straight pipe section 322 after sliding to the straight pipe section 322, and then slides into the pressing channel 411 of the pressing unit 40 and is opposite to the nut mounting portion of the knob 100, and the nut 200 is limited in the nut pressing position.

[0072] Step S40: under the control of the controller 60, the push cylinder 42 is opened, and the pressure head 43 pushes the nut 200 into the nut mounting part of the knob 100 until compression.

[0073] Step S50: after the compression action is completed, the controller 60 controls the drive cylinder 264 connected with the limiting block 261 and the centering rod 262, so that the limiting block 261 and the centering rod 262 exit the containing space, and the knob 100 together with the nut 200 directly falls from the product outlet 11, and leaves the knob nut compression machine; then under the control of the controller 60, the material separating piece 263 exits the containing space, so as to facilitate the next knob 100 to fall on the limiting block 261.

[0074] Step S60: if the controller 60 detects that the drive cylinder 264 is abnormally stressed during the compression process, it is judged that the knob 100 and the nut 200 do not complete the compression as required, and a defective product is generated, and the pusher 52 is started to make the defective product recycling pipeline 51 connected with the product outlet 11, and the defective product is recycled.

[0075] In addition, in the embodiment, the number of handles of the knob 100 is three, but it can be understood that for the knob provided with different numbers, as long as the handles are arranged at the outer periphery of the knob at uniform intervals, the automatic feeding of the knob can also be realized.

[0076] Compared with the prior art, the knob nut compression machine has the following advantages:

[0077] 1. The automatic degree of the knob nut compression work can be improved, and the work efficiency can be improved.

[0078] 2. The alignment accuracy of the knob and the nut is high.

[0079] 3. The defective product can be recycled.

[0080] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0081] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. For example, as used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0082] The embodiments described above are only a few of the embodiments of the present application, which are described in a more specific and detailed manner. However, it should not be construed that the scope of the present application is limited by the above description. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these modifications and improvements are included in the scope of the present application.

Claims

1. A knob nut presser, characterized by: The knob feeding unit comprises: A knob vibration tray for storing knobs; A knob conveying guide in communication with the knob vibration tray, so that the knobs can be conveyed along the knob conveying guide; A vertical vibrator connected to the knob conveying guide; A vertical guide located on the side of the knob conveying guide away from the knob vibration tray, and provided with a containing space extending downward in the vertical direction; A pushing assembly located on the side of the knob conveying guide away from the knob vibration tray, for pushing the knobs into the containing space; and A knob positioning assembly comprising a limiting block and a centering rod; the limiting block and the centering rod extend in the horizontal direction and can be retracted in and out of the containing space; in the vertical direction, the limiting block is close to the middle of the containing space; the centering rod is located directly above the limiting block; the side of the containing space away from the limiting block is provided with a first pressing opening opposite to and in communication with the outside.

2. The knob nut press according to claim 1, wherein: The knob positioning assembly further comprises a material separating piece and a driving cylinder; the material separating piece is located directly above the centering rod; the driving cylinder is connected to the limiting block, the centering rod and the material separating piece respectively, and drives them to retract in and out of the containing space respectively.

3. The knob nut press according to claim 2, wherein: The knob feeding unit further comprises a detection assembly comprising a first detector, a second detection piece and a third detector; the first detector is arranged on the knob conveying guide, for detecting whether the knobs enter the knob conveying guide; the second detection piece is close to the pushing assembly, for detecting whether the knobs reach the pushing assembly; the third detector is close to the limiting block, for detecting whether the knobs fall onto the limiting block.

4. The knob nut press according to claim 2, wherein: The pushing assembly comprises a pushing cylinder and a pushing block; the pushing block is connected to the output end of the pushing cylinder, and is provided with a first opening in communication with the knob conveying guide and a second opening in communication with the containing space; in the vertical direction, the moving direction of the pushing block is perpendicular to the extension direction of the knob conveying guide.

5. The knob nut press according to claim 2, wherein: The nut feeding unit and the pressing unit are further provided; the nut feeding unit comprises a nut vibration tray and a nut guide; one end of the nut guide is in communication with the nut vibration tray, and the other end is in communication with the pressing unit; the pressing unit is connected to the vertical guide, and is provided with a second pressing opening in communication with the first pressing opening.

6. The knob nut press according to claim 5, wherein: The nut guide is provided with an inclined pipe section and a straight pipe section in communication with each other; the inclined pipe section is in communication with the nut vibration tray, and is inclined to the straight pipe section relative to the horizontal plane; the straight pipe section is in communication with the pressing unit.

7. The knob nut press according to claim 6, wherein: The pressing unit comprises a base, a pushing cylinder, a pressing head and a blocking block; the base is connected to the vertical guide and is provided with a pressing channel; the second pressing opening is arranged on one side of the pressing channel and is in communication therewith; one end of the pressing channel is in communication with one end of the straight pipe section away from the inclined pipe section; the blocking block is arranged at one end of the pressing channel away from the straight pipe section; the pressing head is coaxially arranged with the centering rod, and under the driving of the pushing cylinder, the pressing head is close to or away from the pressing channel.

8. The knob nut press according to claim 5, wherein: The bad product recycling unit comprises a bad product recycling pipe and a pusher, and one end of the bad product recycling pipe is pushed to below the limiting block and towards the limiting block under the pushing of the pusher.

9. The knob nut press according to claim 8, wherein: The pusher is a pneumatic cylinder.

10. The knob nut press according to claim 1, wherein: The vertical guide rail is provided with a clamping portion in the accommodating space and on the side opposite to the first pressing opening, the clamping portion extends in the vertical direction, and at least a part of the knob can be clamped into the clamping portion.

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